Positioning clamp of machine tool

Abstract

The positioning clamp of the machine tool comprises a countertop, a rotating part, a first connecting rod, a second connecting rod, a driving unit and more than two leaning angle assemblies, the upper surface of the deck plate is provided with two or more supporting faces arranged in the X direction. Each corner leaning assembly comprises a first positioning piece and a second positioning piece, one end of a first connecting rod is hinged to the rotating piece, the other end of the first connecting rod is hinged to the first positioning piece, one end of a second connecting rod is hinged to the rotating piece, and the other end of the second connecting rod is hinged to the second positioning piece; the driving unit is used for driving the rotating piece or the first positioning piece or the second positioning piece to move. According to the positioning clamp, the driving unit drives the positioning pieces to move simultaneously, the overall structure of the positioning clamp is simplified, the occupied space of the positioning clamp is reduced, reasonable layout of the internal space of a machine tool is facilitated, and the positioning precision of the positioning clamp is improved.

Description

[0001] This utility model patent application is a divisional application with the original application number 202322927689.X, the application name being positioning fixture for machine tools, and the application date being October 27, 2023. Technical Field

[0002] The utility model relates to the technical field of machine tools, in particular to a positioning fixture of a machine tool. Background Art

[0003] When machine tools, including precision engraving machines, process glass plates, metal plates and other sheet materials, they usually use positioning fixtures to position the glass plates, and then use the spindle to process the glass plates; when positioning the sheets, the suction cup on the robot arm places the sheets on the processing station of the machine tool, and the positioning parts on the positioning fixture move along the X-axis and Y-axis toward the center of the processing station along the horizontal plane, pushing the sheet to move, and finally moving the sheet to the predetermined position. After the sheet is positioned, the positioning parts on the positioning fixture move away from the processing station along the X-axis and Y-axis to avoid the processing spindle when processing the glass sheet. The positioning fixture used in the machine tool generally includes positioning members that move along the X direction and the Y direction. The positioning members that move along the X direction and the Y direction are driven by a driving component respectively to be placed close to the glass plate. Since at least two driving components need to be configured, the structure of the positioning fixture is complex and occupies a large internal space of the machine tool. In addition, it is difficult to adjust the two driving components to be completely synchronized, resulting in low positioning accuracy, which in turn affects the processing accuracy of the glass plate. Moreover, the existing positioning members are fixed on a specific component and are often powerless when facing the processing of some special-shaped parts. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a positioning fixture for a machine tool, which has a simple structure, occupies a small space, and has better positioning accuracy.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A positioning fixture for a machine tool, comprising a table top, a rotating member, a first connecting rod, a second connecting rod, a driving unit, and two or more angle assemblies;

[0007] The upper surface of the table top is provided with two or more supporting surfaces arranged along the X direction;

[0008] More than two angle leaning components are arranged along the X direction and correspond to more than two supporting surfaces one by one, each angle leaning component includes a first positioning member and a second positioning member, the first positioning members of all angle leaning components are fixedly matched, and the second positioning members of all angle leaning components are fixedly matched; one end of the first connecting rod is hinged on the rotating member, and the other end is hinged on the first positioning member, and one end of the second connecting rod is hinged on the rotating member, and the other end is hinged on the second positioning member;

[0009] The driving unit is used to drive the rotating member to rotate around a rotation axis consistent with the Z direction so as to drive the first positioning member and the second positioning member to move through the first connecting rod and the second connecting rod respectively so that the first positioning member and the second positioning member move toward or away from the corresponding supporting surface in the X direction and the Y direction respectively; or

[0010] The driving unit is used to drive the first positioning member to move along the X direction so that the first positioning member moves closer to or away from the corresponding support surface, while the first connecting rod moves with the first positioning member to drive the rotating member to rotate around a rotation axis consistent with the Z direction, so as to drive the second positioning member to move through the second connecting rod so that the second positioning member moves closer to or away from the corresponding support surface; or

[0011] The driving unit is used to drive the second positioning member to move along the Y direction so that the second positioning member moves closer to or away from the corresponding support surface, and at the same time, the second connecting rod moves with the second positioning member to drive the rotating member to rotate around a rotation axis consistent with the Z direction, so as to drive the first positioning member to move through the first connecting rod so that the first positioning member moves closer to or away from the corresponding support surface;

[0012] The X direction and the Y direction are perpendicular to each other and a plane formed by the two directions is perpendicular to the Z direction.

[0013] Preferably, the angled component also includes a third positioning component located on the opposite side of the first positioning component, and the third positioning components on all angled components are fixedly matched; a third connecting rod is arranged between the rotating component and the third positioning component, and one end of the third connecting rod is hinged on the rotating component and the other end is hinged on the third positioning component.

[0014] Preferably, the driving unit is a linear driving mechanism.

[0015] Preferably, the driving unit includes a motor, a screw driven by the motor, and a nut seat sleeved on the screw, and the nut seat is fixedly matched with one of the first positioning member and the second positioning member.

[0016] Preferably, the driving unit is a driving motor whose output shaft is connected to the rotating member.

[0017] Preferably, the first positioning member includes a first sliding member that can slide relative to the table panel along the X direction, and a first supporting member installed on the first sliding member, and the first sliding members of the plurality of first positioning members are fixedly matched; the second positioning member includes a second sliding member that can slide relative to the table panel along the X direction, and a second supporting member installed on the second sliding member, and the second sliding members of the plurality of second positioning members are fixedly matched; the third positioning member includes a third sliding member that can slide relative to the table panel along the X direction, and a third supporting member installed on the third sliding member, and the third sliding members of the plurality of third positioning members are fixedly matched.

[0018] Preferably, the first support member and the third support member are in the form of a plate or strip extending along the Y direction, and the second support member is in the form of a plate or strip extending along the X direction.

[0019] Preferably, the first support member includes at least two first positioning posts arranged along the Y direction; the second support member includes at least two second positioning posts arranged along the X direction; and the third support member includes at least two third positioning posts arranged along the Y direction.

[0020] Preferably, the first positioning column is fixed to the first sliding member in a manner that its position relative to the first sliding member can be adjusted along the XY plane; or

[0021] The second positioning column is fixed to the second sliding member in a manner that the position thereof is adjustable relative to the second sliding member along the XY plane; or

[0022] The third positioning column is fixed on the third sliding member in a manner that the position thereof can be adjusted relative to the third sliding member along the XY plane.

[0023] Preferably, the first positioning column is fixed to the first sliding member in a manner that it can be adjusted along the X direction; or

[0024] The second positioning column is fixed to the second sliding member in a manner that it can be adjusted along the Y direction; or

[0025] The third positioning column is fixed on the third sliding member in a manner that it can be adjusted along the X direction.

[0026] Preferably, the first sliding member is fixedly connected to a first base and a first connecting seat located on the first base, the first positioning column is fixed to the first connecting seat, the first positioning column is arranged at a certain distance from the center position of the first connecting seat in the X direction, and the first connecting seat and the first base are fixedly connected together by at least two first bolts penetrating the two along the Z direction; or

[0027] The second sliding member is fixedly connected to a second base and a second connecting seat on the second base, a second positioning column is fixed to the second connecting seat, the second positioning column is arranged at a certain distance from the center position of the second connecting seat in the Y direction, and the second connecting seat and the second base are fixedly connected together by at least two second bolts penetrating the two along the Z direction; or

[0028] The third sliding member is fixedly connected to a third base and a third connecting seat located on the third base, a third positioning column is fixed on the third connecting seat, the third positioning column is arranged at a certain distance from the center position of the third connecting seat in the X direction, and the third connecting seat and the third base are fixedly connected together by at least two third bolts passing through the two along the Z direction.

[0029] Preferably, a first adjustment mechanism is provided between the first positioning column and the first sliding member, the first adjustment mechanism comprises a first connecting plate and a first locking member, the first positioning column is fixed to the first connecting plate and extends upward along the Z direction, the first connecting plate is movably matched with the first sliding member in a manner that it can swing relative to the first sliding member in the XY plane, and the first locking member is used to fix the first connecting plate and the first sliding member together when the first connecting plate moves to a predetermined position relative to the first sliding member; or

[0030] A second adjustment mechanism is provided between the second positioning post and the second sliding member, the second adjustment mechanism includes a second connecting plate and a second locking member, the second positioning post is fixed to the second connecting plate and extends upward along the Z direction, the second connecting plate is movably matched with the second sliding member in a manner that it can swing relative to the second sliding member in the XY plane, and the second locking member is used to fix the second connecting plate and the second sliding member together when the second connecting plate moves to a predetermined position relative to the second sliding member; or

[0031] A third adjusting mechanism is arranged between the third positioning column and the third sliding member, and the third adjusting mechanism includes a third connecting plate and a third locking member. The third positioning column is fixed on the third connecting plate and extends upward along the Z direction. The third connecting plate can be movably cooperated with the third sliding member in a manner that it can swing relative to the third sliding member in the XY plane. The third locking member is used to fix the third connecting plate and the third sliding member together when the third connecting plate moves to a predetermined position relative to the third sliding member.

[0032] Preferably, the first connecting plate is movably matched with the first sliding member in a manner that it can translate relative to the first sliding member along the XY plane and swing relative to the first sliding member in the XY plane, and the first locking member is used to fix the first connecting plate and the first sliding member together when the first connecting plate moves to a predetermined position relative to the first sliding member; or

[0033] The second connecting plate is movably matched with the second sliding member in a manner that it can translate relative to the second sliding member along the XY plane and swing relative to the second sliding member in the XY plane, and the second locking member is used to fix the second connecting plate and the second sliding member together when the second connecting plate moves to a predetermined position relative to the second sliding member; or

[0034] The third connecting plate cooperates with the third sliding member in a manner that it can translate relative to the third sliding member along the XY plane and swing relative to the third sliding member within the XY plane. The third locking member is used to fix the third connecting plate and the third sliding member together when the third connecting plate moves to a predetermined position relative to the third sliding member.

[0035] Preferably, the first connecting plate is strip-shaped and its extension direction is parallel to the XY plane, the first positioning column is fixed to one end of the first connecting plate, the first connecting plate is provided with a first long groove extending along its length direction, the first locking member is a first locking bolt, the first locking bolt crosses the first long groove so that the first connecting plate is pivotally matched with the first locking bolt and can slide relative to the first locking bolt along the extension direction of the first long groove, the first locking bolt is threadedly connected to the first sliding member so that when the first locking bolt is tightened, the first connecting plate is clamped and fixed by the nut of the first locking bolt and the first sliding member; or

[0036] The second connecting plate is strip-shaped and its extension direction is parallel to the XY plane, the second positioning column is fixed to one end of the second connecting plate, the second connecting plate is provided with a second long groove extending along its length direction, the second locking member is a second tightening bolt, the second locking bolt crosses the second long groove so that the second connecting plate and the second locking bolt are pivotally matched and can slide relative to the second locking bolt along the extension direction of the second long groove, the second locking bolt is screwed on the second sliding member so that when the second locking bolt is tightened, the second connecting plate is clamped and fixed by the nut of the second locking bolt and the second sliding member; or

[0037] The third connecting plate is strip-shaped and its extension direction is parallel to the XY plane. The third positioning column is fixed at one end of the third connecting plate. The third connecting plate is provided with a third long groove extending along its length direction. The third locking member is a third tightening bolt. The third locking bolt crosses the third long groove so that the third connecting plate and the third locking bolt can pivotally cooperate and can slide relative to the third locking bolt along the extension direction of the third long groove. The third locking bolt is screwed on the third sliding member so that the third connecting plate is clamped and fixed by the nut of the third locking bolt and the third sliding member when the third locking bolt is tightened.

[0038] Preferably, the table top is provided with a plurality of second through grooves penetrating from the lower surface to the upper surface thereof to avoid the first positioning member, the second positioning member and the third positioning member.

[0039] Preferably, the second through slot located at the edge of the table top forms a second opening at the corresponding side of the table top so that the first positioning member, the second positioning member and the third positioning member can move from the corresponding first through slot opening to the outer side of the edge of the table top.

[0040] Preferably, the second through slots of the first positioning member and the third positioning member on adjacent sides of two adjacent corner assemblies are staggered along the Y direction.

[0041] Preferably, the rotating member is pivotally connected to the lower surface of the table panel, and the driving unit is installed on the lower surface of the table panel.

[0042] Preferably, a mounting frame is provided below the table panel, the rotating member is pivotally connected to the mounting frame, the first positioning member, the second positioning member and the third positioning member are all slidably mounted on the mounting frame, and the driving unit is mounted on the mounting frame.

[0043] Preferably, one of the mounting frame and the table panel moves up and down relative to the other along the Z direction under the drive of a driving member, so that the first positioning member, the second positioning member and the third positioning member can move between a first position higher than the support surface and a second position lower than the lower surface of the table panel.

[0044] Preferably, the rotating member is located below the mounting frame, and the mounting frame is provided with a plurality of first through slots extending from the lower surface to the upper surface thereof for the first positioning member, the second positioning member, and the third positioning member to pass through from bottom to top.

[0045] Preferably, the first through slot located at the edge of the mounting frame forms a first opening at the corresponding side of the mounting frame so that the first positioning member, the second positioning member, and the third positioning member can move from the first opening of the corresponding first through slot to the outside of the edge of the mounting frame.

[0046] Preferably, the first through slots for allowing the first positioning members and the third positioning members on adjacent sides of two adjacent corner assemblies to pass through are staggered along the Y direction.

[0047] Preferably, the upper surface of the mounting frame and the lower surface of the table top are matched in structure, so that when the mounting frame and the table top are brought close together, the mounting frame can be as close to the supporting surface as possible.

[0048] Preferably, downwardly extending vertical plates are respectively provided on both sides of the table panel, the mounting frame is placed between the two table panels and its two sides are slidably mounted on the two vertical plates, and the driving member is a cylinder for driving the mounting frame to move along Z relative to the table panel.

[0049] Preferably, the cylinder body of the cylinder is fixed on the mounting frame, and the telescopic rod extends downward to be connected to the vertical plate.

[0050] Preferably, the top surface of the cylinder body of the cylinder is flush with or lower than the upper surface of the mounting frame.

[0051] Preferably, a limiting groove extending along the Z direction is provided on the vertical plate, the cylinder body of the cylinder is placed in the limiting groove, and the telescopic rod is connected to the bottom edge of the limiting groove.

[0052] Preferably, the corner assembly further includes a fourth positioning member located on the opposite side of the second positioning member.

[0053] Preferably, a fourth connecting rod is further provided between the fourth positioning member and the rotating member, one end of the fourth connecting rod is hinged to the rotating member, and the other end of the fourth connecting rod is hinged to the fourth positioning member.

[0054] Preferably, a tabletop movable along the Y direction is provided on the machine platform of the machine tool, and the tabletop plate and the mounting frame are installed on the tabletop to move along the Y direction with the tabletop; the fourth positioning member is fixedly matched with the machine platform of the machine tool.

[0055] Preferably, a mounting plate and fastening bolts for fixing the mounting plate to the machine platform are provided on the machine platform, a waist hole extending along the Y direction is provided on the mounting plate, the fastening bolts pass through the waist hole and are screwed onto the machine platform, and a fourth positioning piece is fixed on the mounting plate.

[0056] Preferably, the fourth positioning member is a positioning block, and a guide groove extending along the Y direction is provided on the machine tool platform. The positioning block is slidably embedded in the guide groove, and a locking bolt is threaded on the machine tool platform for fixing the positioning block on the machine tool platform when the positioning block slides along the guide groove to a predetermined position.

[0057] Preferably, a vacuum adsorption plate is fixedly mounted on the upper surface of the table panel, and the upper surface of the vacuum adsorption plate forms a supporting surface.

[0058] Preferably, a transition pad is fixedly connected to the table panel in a detachable manner, and the vacuum adsorption plate is detachably fixed on the transition pad. The projection of the outer periphery of the vacuum adsorption plate on the transition pad all falls inside the outer periphery of the transition pad, and the transition pad is provided with an avoidance groove extending from its edge toward the inside to avoid the corner component.

[0059] The beneficial effects of the utility model are:

[0060] In the utility model, a driving unit is used to directly drive one of the positioning members to slide, and the positioning member is linked with the rotating member through its connecting rod and drives the rotating member to rotate, so that the other positioning members can realize the synchronous linkage of multiple positioning members under the drive of the rotating member. In the case of being beneficial to the layout of the driving position, multiple positioning members are driven to move simultaneously by a driving unit, so that the first positioning member and the second positioning member can move towards or away from the supporting surface in the X direction and the Y direction respectively, simplifying the overall structure of the positioning fixture, reducing the occupied space of the positioning fixture, and being beneficial to the reasonable layout of the internal space of the machine tool. Moreover, by moving the first positioning member and the second positioning member at the same time by a driving unit, the movement of the first positioning member and the second positioning member can have a high degree of synchronization, thereby improving the positioning accuracy of the positioning fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 This is a structural schematic diagram of a positioning fixture according to a first embodiment of the utility model;

[0062] Figure 2 for Figure 1 The schematic diagram of the installation structure of the positioning fixture shown;

[0063] Figure 3for Figure 2 A schematic diagram of the structure of the middle mounting frame and the positioning member;

[0064] Figure 4 for Figure 2 Schematic diagram of the assembly of the middle mounting frame and the positioning piece;

[0065] Figure 5 It is an enlarged view of point A in 2;

[0066] Figure 6 for Figure 1 Schematic diagram of the positioning fixture installed on the machine tool;

[0067] Figure 7 for Figure 6 Structural diagram of the middle mounting plate;

[0068] Figure 8 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0069] Fig. 9 for Figure 8 A schematic diagram of the structure of the middle positioning member;

[0070] Fig.10 for Figure 8 Schematic diagram of the positioning fixture installed on the machine tool;

[0071] Fig.11 for Fig.10 Magnified view at B. DETAILED DESCRIPTION

[0072] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0073] like Figure 1 , 2, 3, and 4 show a positioning fixture for a machine tool according to a first embodiment of the present invention, which includes a table panel 10, a mounting frame 20, a driving member, a driving unit, a rotating member 61, a first connecting rod 613, a second connecting rod 614, and two angle components. The mounting frame 20 is located below the table panel 10, and the mounting frame 20 is driven by the driving member to move along the Z direction, so that the mounting frame 20 can move upward toward the table panel 10 or downward away from the table panel 10; two supporting surfaces arranged along the X direction are provided on the upper surface of the table panel 10, and each supporting surface is uniformly shaped The two angle assemblies are arranged along the X direction, and the two angle assemblies are respectively arranged in one-to-one correspondence with the two supporting surfaces mentioned above. The angle assemblies include a first positioning member 30 and a second positioning member 40 installed on the mounting frame 20. The first positioning members 30 on the two angle assemblies are fixedly matched, and the second positioning members 40 on the two angle assemblies are fixedly matched; the rotating member 61 is pivotally connected to the mounting frame 20, and its rotation axis relative to the mounting frame 20 is consistent with the Z direction, and the Z direction is a direction perpendicular to the plane formed by the X direction and the Y direction. , that is, the height direction or the up-down direction; one end of the first connecting rod 613 is hinged on the rotating member 61, and the other end is hinged on the first positioning member 40, one end of the second connecting rod 614 is hinged on the rotating member 61, and the other end is hinged on the second positioning member 50, the first positioning member 30 has the freedom to move along the X direction, and the second positioning member 40 has the freedom to move along the Y direction. The driving unit drives the first positioning member 30 to move along the X direction, so that the two first positioning members 30 can move closer to or farther from the corresponding support surfaces respectively when moving along the X direction. When the first positioning member 30 moves along the X direction, it pulls the first connecting rod 613, so that the first connecting rod 613 can drive the rotating member 61 to rotate at the same time, and the rotating member 61 rotates to drive the second connecting rod 614, and the second positioning member 40 is driven to move along the Y direction through the second connecting rod 614, so that the two second positioning members 40 can respectively move toward or away from the corresponding supporting surfaces, so that the first positioning member 30 and the second positioning member 40 simultaneously move toward or away from the supporting surface. The X direction and the Y direction in the figure are perpendicular to each other and form a plane parallel to the horizontal plane. After the glass plate 9 is placed on the supporting surface, the first positioning member 30 and the second positioning member 40 move along the X direction and the Y direction respectively, and push the two adjacent edges of the glass plate 9 to position the glass plate 9.By setting a rotating member 61, a first connecting rod 613, and a second connecting rod 614, a driving unit is used to drive the first positioning member 30 to move in a straight line, and the linear motion of the first positioning member 30 is converted into rotation of the rotating member 61, and then the rotating member 61 drives the second connecting rod 614 to make the second positioning member 40 move in a straight line. In fact, the driving unit can also be used to drive the second positioning member 40 to move in the Y direction, so that the second positioning member 40 moves toward or away from the corresponding support surface. At the same time, the second connecting rod 614 moves with the second positioning member 40 to drive the rotating member 61 to rotate around a rotation axis consistent with the Z direction, so as to drive the first positioning member 40 to move through the first connecting rod 613 so that the first positioning member 40 moves toward or away from the corresponding support surface. Similarly, the first positioning member 30 and the second positioning member 40 can be synchronously moved toward or away from the support surface.

[0074] When the driving member drives the mounting frame 20 to move upward to the maximum position or the appropriate position, the first positioning member 30 and the second positioning member 40 located on the mounting frame 20 can move upward with the mounting frame 20, so that the first positioning member 30 and the second positioning member 40 are used to push the edge of the glass plate 9 above the supporting surface. When the driving member drives the mounting frame 20 to move downward to the maximum position or the appropriate position, the first positioning member 30 and the second positioning member 40 located on the mounting frame 20 can move downward with the mounting frame 20, so that the first positioning member 30 and the second positioning member 40 are retracted to the lower surface of the first table panel 10.

[0075] When positioning the glass plate 9, the first positioning member 30 and the second positioning member 40 are both located below the lower surface of the table panel 10. After the suction cup of the mechanical arm installed on the machine tool places the two glass plates 9 on the two supporting surfaces at the same time, the driving member drives the mounting frame 20 to move upward to the maximum position or the appropriate position. The upper positions of the first positioning member 30 and the second positioning member 40 are both beyond the supporting surface. Then the first positioning member 30 and the second positioning member 40 move toward the supporting surface to push the glass plate 9 so that its position on the supporting surface is exactly at a specific position and can be accurately processed by the machine tool spindle. After the positioning is completed, the first positioning member 30 and the second positioning member 40 are away from the supporting surface, and the driving member drives the mounting frame 20 to move downward to the maximum position or the appropriate position. The first positioning member 30 and the second positioning member 40 move with the mounting frame 20 to a position below the upper surface of the table panel 10, which can be a position below the upper surface of the table panel. Some positioning members can be located inside the table panel or below the lower surface of the table panel. The positioning members are completely outside the table panel. When placing large-sized glass plates on two supporting surfaces, since the spacing distance between the two supporting surfaces is basically fixed, the spacing between the glass plates 9 on the two supporting panels will become smaller, which will inevitably affect the activity space of the positioning members on the adjacent workstations. In the above structure, since the first positioning member 30 and the second positioning member 40 can move relative to the table panel in the Z direction, in theory, only the gap between the adjacent edges of the glass plates placed on the two supporting surfaces needs to be large enough for the first positioning member 30 to pass from bottom to top, and the first positioning member 30 that has passed through can be used to move in the X direction and push the glass plate for positioning. The spacing between the two adjacent workstations can be further reduced, thereby allowing the processing table to obtain more processing space and process larger-sized sheets.

[0076] In the above structure of the utility model, two positioning members are used to push the adjacent edges of the glass plate 9 to position the glass plate. When the suction cup of the robot arm places the glass plate 9 on the support surface, the suction cup of the robot arm should try to place the glass plate 9 close to the first positioning member 30 and the second positioning member 40, that is, the positioning can be achieved, but higher requirements are put forward on the mechanism of the machine tool to transfer the glass plate. For this reason, it is more preferred that in order to simplify the structure of the machine tool and enable the positioning fixture to be suitable for glass plates of larger sizes, the above two corner assemblies both include a third positioning member 50 installed on the mounting frame 20, and the third positioning member 50 is located on the opposite side of the first positioning member 30, and the third positioning member 50 is also linked with the above rotating member 61, so that the third positioning member 50 moves simultaneously with the first positioning member 30 and the second positioning member 40.

[0077] The two first positioning members 30 and the two third positioning members 50 are arranged at intervals in the X direction; when positioning the glass plate on the support surface, the first positioning member 30 and the third positioning member 50 approach the support surface from both sides of the support surface respectively, while the second positioning member 40 approaches the support surface from one end of the support surface. The third positioning members 50 of the two corner components are fixedly matched, and the third positioning member 50 has a degree of freedom of movement in the X direction. A third connecting rod 615 is arranged between the third positioning member 50 and the rotating member 61. One end of the third connecting rod 615 is hinged to the rotating member 61 and the other end is hinged to one of the third positioning members 50. Thus, while the driving unit drives the first positioning member 30 to move in the X direction, it drives the rotating member 61 to rotate, so that the rotating member 61 can drive the third connecting rod 615 to enable the third positioning member 50 to move in the X direction, and then enable the first positioning member 30, the second positioning member 40, and the third positioning member 50 to approach or move away from the support surface in the X direction, the Y direction, and the X direction respectively at the same time.

[0078] A linear guide rail 203 extending in the X direction, a linear guide rail 204 extending in the Y direction, and a linear guide rail 205 extending in the X direction are arranged on the mounting frame 20. The first positioning member 30 is mounted on the linear guide rail 203, the second positioning member 40 is mounted on the linear guide rail 204, and the third positioning member 50 is mounted on the linear guide rail 205. That is, the first positioning member 30, the second positioning member 40, and the third positioning member 50 are slidably mounted on the mounting frame 20 through linear guide rail pairs respectively. It should be noted that the structure for slidably mounting each positioning member on the mounting frame 20 is not necessarily the above structure of mounting linear guide rails on the mounting frame 20. It can also be a chute provided on the mounting frame 20, enabling each positioning member to slide along the corresponding chute respectively. In short, as long as each positioning member can be mounted on the mounting frame 20 and each positioning member can move linearly.

[0079] The above-mentioned rotating member 61 is set to have a disc-shaped structure to reduce the space it occupies in the height direction. In the above structure, the output end of the driving unit is connected to the first positioning member 30, the second positioning member 40, or the third positioning member 50, and the rotation of the rotating member 61 is driven by the linear movement of one of the positioning members; actually, the output end of the driving unit can also be directly connected to the rotating member 61, and through the rotation of the rotating member 61, each positioning member is driven to move linearly. For example, a motor can be mounted on the mounting frame 20, and the height space will increase accordingly. The motor rotating shaft and the rotating member 61 are connected through a reduction mechanism to achieve power transmission, and the motor directly drives the rotating member 61 to rotate. When the rotating member 61 rotates, each corresponding positioning member is driven by the above-mentioned various connecting rods respectively, so that each positioning member approaches the support surface or moves away from the support surface at the same time. For example, from Figure 3From the perspective of the display, the rotating member 61 is installed in the middle of the mounting frame 20. When the rotating member 61 rotates counterclockwise, the first positioning member 30 moves to the left, the third positioning member 50 moves to the right, and the second positioning member 40 moves upward to approach the support surface; when the rotating member 61 rotates clockwise, the first positioning member 30 moves to the right, the third positioning member 50 moves to the left, and the second positioning member 40 moves downward to move away from the support surface. Considering that the space of the machine tool processing table is extremely limited, in order not to affect the original space of the processing table, such as Figure 3 As shown, in another preferred embodiment, the structural simplification and space utilization are further optimized. The driving unit includes a motor 621, a screw rod 622, and a nut seat 623. The screw rod 622 extends along the X direction and is pivoted on the mounting frame 20. One end of the screw rod 622 is connected to the rotating shaft of the motor 621. The nut seat 623 is sleeved on the screw rod 622. The nut seat 623 is fixedly matched with the first positioning member 30. The motor 621 is started to drive the nut seat 623 to move along the X direction, and then drive the first positioning member 30 to move along the X direction. When the first positioning member 30 moves along the X direction, the first positioning member 30 pulls the rotating member 61 to rotate, and then drives the second positioning member 40 to move along the Y direction and the third positioning member 50 to move along the X direction. Alternatively, the above-mentioned nut seat 623 can be fixedly matched with the second positioning member 40 or the third positioning member 50, and when the driving unit drives one of the positioning members to move along a straight line, the rotating member 61 rotates to drive the other two positioning members to move along a straight line. In other embodiments, the driving unit may be other forms of linear driving mechanisms. For example, the driving unit may be a linear motor or an electromagnetic push rod whose output end is directly connected to the first positioning member 30 .

[0080] In an embodiment where the third positioning member 50 is not provided, a motor can also be used to directly drive the rotating member 61 to rotate, and the first positioning member 30 and the second positioning member 40 are driven simultaneously by the rotating member 61. The connection structure between each positioning member and the rotating member is the same as described above and will not be repeated here.

[0081] See also Figure 3 , 4As shown, the utility model places the rotating member 61, the driving unit and each connecting rod under the mounting frame 20, so that the rotating member 61, the driving unit and each connecting rod do not occupy the space between the mounting frame 20 and the table panel 10, so that when the mounting frame 20 moves upward, it can be as close to the table panel 10 as possible, reducing the height size of each positioning member, while reducing the maximum stroke of the mounting frame 20 moving up and down, and then reducing the Z-direction space occupied by the entire positioning fixture; in order to facilitate the connection between the rotating member 61 and the positioning members, and at the same time ensure that each positioning member can be higher than the mounting frame 20 when it moves upward to the maximum position In order to form a supporting surface, each positioning member needs to have a portion located below the lower surface of the mounting frame 20, so that each positioning member is connected to the rotating member 61 through a connecting rod. In this way, the mounting frame 20 can be set to a plate-shaped structure, and a structure for avoiding each positioning member is set thereon. Specifically, the mounting frame 20 is provided with a first through groove 231, a first through groove 241 and a first through groove 251 that penetrate from its lower surface to the upper surface. The first through groove 231 can allow the first positioning member 30 to pass through from bottom to top, the first through groove 241 can allow the second positioning member 40 to pass through from bottom to top, and the first through groove 251 can allow the third positioning member 50 to pass through from bottom to top. The mounting frame 20 is provided with a first through slot to prevent interference between the positioning members and the mounting frame 20, and the positioning members can be accommodated inside the edge of the mounting frame 20. For example, a first through slot 241 matching the first positioning member 30 is provided on the side of the mounting frame 20, and an opening is formed at the edge of the mounting frame 20. When a larger glass plate needs to be positioned, the driving unit can drive the first positioning member 30 to move in the X direction away from the supporting surface. At this time, the first positioning member 30 can move along the opening of the first through slot 241 to the outside of the edge of the mounting frame 20, and then pass through the mounting frame 20. The first positioning member 30 moves upward to the outside of the corresponding edge of the glass plate, so as to avoid the first positioning member 30 being located below the glass plate when the mounting frame 20 moves upward. After positioning is completed, the first positioning member 30 can slide into the first through groove 241 through the opening of the first through groove 241 with an opening, so as to be accommodated on the inner side of the edge of the mounting frame 20; similarly, the first through groove 251 provided on the side of the mounting frame 20 and matching with the third positioning member 50 can also enable the third positioning member 50 to slide out from the opening of the first through groove 251 to the outside of the edge of the mounting frame 20 and accommodate the third positioning member 50. The above-mentioned first through grooves 241 are all formed with openings on the side of the mounting frame 20, so that the second positioning member 40 can slide to the outside of the edge of the mounting frame 20 and accommodate the second positioning member 40 so that the second positioning member 40 is located on the inner side of the edge of the mounting frame 20.Due to the double-station setting, the first positioning members 30 and the second positioning members 50 on the adjacent sides of the two support member assemblies are located in the middle position of the mounting frame 20. Therefore, a first through slot 231 and a first through slot 251 are also provided in the middle position of the mounting frame 20. The first through slot 231 and the first through slot 251 located in the middle are staggered by a certain distance along the Y direction, so that the first positioning members 30 and the third positioning members 50 on the adjacent sides of the two corner support assemblies are staggered along the Y direction. In this way, the first positioning members 30 and the third positioning members 50 on the adjacent sides of the two corner support assemblies respectively move along the first through slot 231 and the first through slot 251 along the X direction without interference, so that the two corner support assemblies can be sufficiently close to each other, and then the two supporting surfaces on the table panel 10 can be sufficiently close to each other, which is beneficial to space utilization.

[0082] In order to further improve the utilization rate of the Z-direction space and enable the mounting frame 20 to be as close to the table panel 10 as possible when the mounting frame 20 moves upward, the upper surface of the mounting frame 20 of the utility model and the lower surface of the table panel 10 are matched with each other. For example, the upper surface of the mounting frame 20 and the lower surface of the table panel 10 can be set as planes parallel to the XY plane. In this way, the mounting frame 20 can be close to the lower surface of the table panel 10 after moving upward. Of course, the upper surface of the mounting frame 20 and the lower surface of the table panel 10 are not limited to the above-mentioned planes, and the two can also be concave and convex matching structures.

[0083] In other embodiments, the driving unit, the rotating member 61, and the connecting rods may be arranged above the mounting frame 20, that is, the rotating member 61, the driving unit, the connecting rods, the first positioning member 30, the second positioning member 40, and the third positioning member 50 are all located above the mounting frame 20. In this case, the mounting frame 20 does not need to be provided with a first through groove for avoiding each positioning member, and the structure of the mounting frame 20 will become simpler.

[0084] A driving unit is used to drive all the positioning members on the two angle leaning assemblies to move simultaneously. The first positioning member 30 of the utility model includes a first sliding member installed on the linear guide rail 203 to move relative to the table panel 10 and the mounting frame 20 in the X direction, and a first leaning member installed on the first sliding member. The first sliding members of the plurality of first positioning members 30 are fixedly matched. Specifically, the first sliding member is a longitudinal beam 33 extending along the Y direction. The longitudinal beams 33 of the first positioning members 30 on the two angle leaning assemblies are fixedly connected by a cross beam 34 extending along the X direction; the second positioning member 40 includes a first sliding member installed on the linear guide rail 204 to move relative to the table panel 10 and the mounting frame 20 in the Y direction. The second sliding member of the frame 20 moves, and the second supporting member installed on the second sliding member, the second sliding members of the second positioning members 40 on the two angle leaning assemblies are fixedly connected to a crossbeam 43 extending along the X direction; the third positioning member 50 includes a third sliding member installed on the linear guide rail 205 to move in the X direction relative to the table panel 10 and the mounting plate 20, and a third supporting member installed on the third sliding member, and the third sliding members of multiple third positioning members 50 are fixedly matched. Specifically, the third sliding member is a longitudinal beam 53 extending along the Y direction, and the longitudinal beams 53 of the third positioning members 50 on the two angle leaning assemblies are fixedly connected by a transverse beam 54 extending along the X direction. One end of the first connecting rod 613 is hinged to one of the longitudinal beams 33, one end of the second connecting rod 614 is hinged to the cross beam 43, and one end of the third connecting rod 615 is hinged to one of the longitudinal beams 53. The rotating member 61 is located in the middle position of the mounting frame 20, and the other ends of the first connecting rod 613, the second connecting rod 614, and the third connecting rod 615 are all hinged to the rotating member 61.

[0085] The first support member, the second support member, and the third support member may be of a columnar structure, or of a strip or plate shape. For example, when a strip or plate structure is adopted, the strips or plates of the first support member and the second support member extend along the Y direction, and the strip or plate of the second support member extends along the X direction. The support member of the positioning member used to push the glass plate is set to be of a strip or plate shape, so that the support member can have a larger contact portion with the glass plate when pushing the glass plate, so as to better position the glass plate by sticking to the edge of the glass plate. However, the structure of the support members on each positioning member extending continuously requires that a larger evasion structure be provided on the mounting frame 20 and the table panel 10 to avoid the positioning member. In order to simplify the overall structure, the utility model preferably sets the support member on the positioning member to a columnar structure. Specifically, the first support member includes two first positioning columns 31 arranged along the Y direction, and the two first positioning columns 31 are respectively installed at both ends of the longitudinal beam 33; the second support member includes two second positioning columns 41 arranged along the X direction, and the two second positioning columns 41 are installed on the cross beam 43; the third support member includes two third positioning columns 51 arranged along the Y direction, and the two third positioning columns 51 are respectively installed at both ends of the longitudinal beam 53; when leaning against the edge of the glass plate, the two positioning columns staggered along the corresponding edges of the glass plate are pressed against the glass plate to push the glass plate to translate, which can prevent the glass plate from swinging when being pushed. In fact, each support member can include more than two positioning columns, for example, the first support member 30 can include three first positioning columns 31 arranged along the Y direction.

[0086] The above-mentioned positioning column is set to be a structure that can be adjusted in the XY plane position, so that the positioning column can be adjusted when processing glasses of different sizes to change its initial position in the X and Y directions; for example, the position of the first positioning column 31 relative to the first sliding member can be adjusted along the XY plane. One implementation method is as follows: Change the position of the first positioning column 31 relative to the longitudinal beam 33 in the X direction, see Figure 5 As shown, a base 32 is fixedly connected to the upper surface of the end of the longitudinal beam 33, and the first positioning column 31 includes a first connecting seat 312 and a first columnar portion 311 extending upward from the first connecting seat 312. The columnar portion 311 is a portion that contacts the edge of the glass plate to position the glass plate. The first columnar portion 311 is arranged at a certain distance from the X-direction center of the first connecting seat 312, that is, the first columnar portion 311 is arranged to deviate from the center of the length direction of the first connecting seat 312. The first connecting seat 312 and the base 32 are fixedly connected together by two bolts penetrating the two along the Z direction. Figure 5In the state shown, the first columnar portion 311 is located relatively outside after being fixed by bolts. When positioning a relatively small glass plate, the first positioning column 31 can be disassembled, and the first connecting seat 312 is rotated 180 degrees. Then, the first connecting seat 312 and the base 32 are fixed by bolts. At this time, the first columnar portion 311 is located relatively inside. When positioning a larger glass plate, the first positioning column 31 is adjusted to Figure 4 The state shown. The position of the second positioning column 41 relative to the second sliding member in the XY plane can also be adjustable. The second positioning column 41 is also installed on a base fixed on the crossbeam 43. The structure of the second positioning column 41 cooperating with the base and its own structure are the same as those of the first positioning column 31. It can be adjusted along the Y direction in the same adjustment manner as the first positioning column 31 to change its position relative to the crossbeam 43 in the Y direction. Since the structure of the second positioning column 41 and the structure of the second positioning column 41 cooperating with the base are the same as those of the first positioning column 31, they are not repeated here. The third positioning column 51 is installed on a base fixed on the longitudinal beam 53. It can be adjusted along the X direction in the same adjustment manner as the first positioning column 31 to change its position relative to the longitudinal beam 53 in the X direction. Since the structure of the second positioning column 51 and the structure of the second positioning column 31 cooperating with the base are the same as those of the first positioning column 31, they are not repeated here. In the actual use process, according to the size and positioning requirements of the glass plate, one of the first positioning column 31, the second positioning column 41, and the third positioning column 51, or two or three of them can be selectively set to the above-mentioned adjustable structure at the same time; the first positioning column 31, the second positioning column 41 and the third positioning column 51 can also be set in other ways to be adjustable relative to their respective sliding parts in the XY plane. For example, the first positioning column 31 is set to be swingably installed on the longitudinal beam 33, so that the first positioning column 31 can swing relative to the longitudinal beam 33 along the XY plane. In short, in the actual use process, according to the size, shape and positioning requirements of the glass plate, one of the first positioning column 31, the second positioning column 41, and the third positioning column 51, or two or three of them can be set to be swingable in the XY plane at the same time.

[0087] Similar to the above-mentioned first through slot on the mounting frame 20, a second through slot 103, a second through slot 104 and a second through slot 105 are provided on the table panel 10, which penetrate from the lower surface to the upper surface thereof. The second through slot 103 is used to avoid the first positioning member 30, specifically to avoid the first positioning column 31 of the first positioning member 30; the second through slot 104 is used to avoid the second positioning member 40, specifically to avoid the second positioning column 41 of the second positioning member 40; the second positioning slot 105 is used to avoid the third positioning member 50, specifically to avoid The third positioning column 51 of the third positioning member 50 is arranged so as to avoid interference between the table panel 10 and each positioning member. The second positioning grooves at the edge of the table panel 10 are all extended to the corresponding edge of the table panel 10 to form an opening. For example, the second through groove 103 at the edge of the table panel 10 for avoiding the first positioning member 30 is extended to the edge of the table panel 10 to form an opening. The first positioning member 30 can slide in the second through groove 103 at the edge to slide from the opening to the outside of the edge of the table panel 10 to accommodate the positioning of a glass plate of a larger size. The second positioning groove 105 set at the edge of the other side of the table panel 10 is used to adapt to the third positioning member 50, so that the third positioning member 50 can slide from the second positioning groove 105 at the edge to the outside of the edge of the table panel 10; all the above-mentioned second through grooves 104 are formed at the edge of the table panel 10 to form an opening. The second through groove 103 and the second through groove 105 provided in the portion of the table panel 10 between the two supporting surfaces are used to avoid the first positioning member 30 and the third positioning member 50 on the adjacent sides of the two positioning spaces. In order to avoid interference between the first positioning member 30 and the second positioning member 50 and to minimize the distance between the two supporting surfaces, the second through groove 103 and the second through groove 105 between the two supporting surfaces 10 are staggered along the Y direction.

[0088] See also Figure 6 , 7 As shown, preferably, the corner assembly also includes a fourth positioning member 80 located on the opposite side of the second positioning member 40; the fourth positioning member 80 is used in conjunction with the above-mentioned first positioning member 30, second positioning member 40 and third positioning member 50 to respectively abut against the four edges of the glass plate, thereby positioning the glass plate on the four edges.

[0089] See also Figure 6The structure shown is for installing the positioning fixture on a machine tool, wherein a table 72 movable along the Y direction is provided on the machine tool's table 70, and a table panel 10 and a mounting frame 20 are installed on the table 72 so that the positioning fixture can move along the Y direction as a whole along the table 72. The fourth positioning member 80 is fixed on the machine tool's table 70, and moves along the Y direction through the table 72 on the machine tool so that the fourth positioning member 80 can approach or move away from the supporting surface. A mounting plate 71 and fastening bolts for fixing the mounting plate 71 to the machine 70 are provided on the machine 70. A waist hole 711 extending along the Y direction is provided on the mounting plate 71. The fastening bolts pass through the waist hole 711 and are screwed to the machine 70. The mounting plate 71 and the machine 70 can be fixed by tightening the fastening bolts. The position of the mounting plate 71 can be adjusted along the Y direction by loosening the fastening bolts. Then, the mounting plate 71 and the machine 70 can be fixed by tightening the fastening bolts. Thus, the purpose of adjusting the fourth positioning member 80 along the Y direction is achieved to adapt to glass plates of different sizes. The setting of the fourth positioning member can cooperate with the second positioning member to realize the Y-direction positioning of the workpiece, especially the second positioning member is a positioning fixture, and the positioning fixture can move greatly in the Y-direction with the moving table, so that the size adjustment of the positioning fixture in the Y-direction becomes very large, and the suitable workpiece size range is also increased accordingly. It is an unprecedented idea to use the moving range of the moving table (table) to realize the Y-direction positioning of the positioning fixture, which greatly saves the already limited space on the machine and reduces the burden on the driving unit on the positioning fixture. At the same time, it can also obtain a wider positioning range, which can be said to kill two birds with one stone.

[0090] The fourth positioning member 80 may be Figure 5 , 7 The columnar structure shown in the figure may also be a plate or strip extending along the X direction. The fourth positioning member 80 may also be mounted on the machine table 70 via a linear guide pair extending along the Y direction, and the position of the fourth positioning member 80 may be adjusted along the Y direction by a driving mechanism.

[0091] Of course, the fourth positioning member can also be installed on the mounting frame 20, and the fourth positioning member is linked with the rotating member 61, and a fourth connecting rod is arranged between the fourth positioning member and the rotating member 61, and the two ends of the fourth connecting rod are respectively hinged to the rotating member 61 and the fourth positioning member, so that the first positioning member 30, the second positioning member 40, the third positioning member 50, and the fourth positioning member are respectively moved closer to the support surface or away from the support surface simultaneously along the X direction, Y direction, X direction, and Y direction.

[0092] See also Figure 1 , 2As shown, a vertical plate 12 extending downward is respectively provided on both sides of the table panel 10, and the two vertical plates 12 and the table panel 10 form a door-like structure, and the mounting frame 20 is placed between the two vertical plates 12, and the two sides of the mounting frame 20 are respectively slidably mounted on the two vertical plates 12. Specifically, a linear guide or a slide groove extending along the Z direction may be provided on the vertical plate 12, and the mounting frame 20 is slidably mounted on the linear guide or the slide groove, so that the mounting frame 20 has the freedom to move relative to the table panel 10 in the Z direction, and the above-mentioned driving member is a cylinder, a linear motor, an oil cylinder or other driving component capable of realizing linear motion that drives the mounting frame 20 to move relative to the table panel 10 in the Z direction. The table panel 10 and the two vertical plates 12 form a door-like structure, so that the mounting frame 20 moves up and down inside the door-like structure, and then plays a better protective role for the mounting frame 20, the driving unit located on the mounting frame 20, and other components located on the mounting frame 20. In a more preferred embodiment, the driving member is a cylinder 21, the cylinder body of the cylinder 21 is fixed on the mounting frame 20, the telescopic rod of the cylinder 21 extends downward along the Z direction and is connected to the vertical plate 12, and the cylinder 21 is installed upside down. Because the spindle of the machine tool needs to be cooled and lubricated with coolant, lubricating fluid, high-pressure gas, etc. when processing the glass plate, and the dust on the processing surface of the glass plate is blown away, the above-mentioned cylinder 21 is installed upside down to prevent impurities such as liquid and dust from entering the inside of the cylinder 21 through the gap between the cylinder body of the cylinder 21 and the telescopic rod. In addition, after the cylinder body of the cylinder 21 is fixed to the side of the mounting frame 20, the top surface of the cylinder body of the cylinder 21 is flush with the upper surface of the mounting frame 20, or lower than the upper surface of the mounting frame 20. In this way, the cylinder body of the cylinder 21 will not occupy the space above the upper surface of the mounting frame 20. When the mounting frame 20 moves upward to approach the table panel 10, the cylinder 21 will not interfere with the table panel 10, thereby allowing the mounting frame 20 to be sufficiently close to the table panel 10 to reduce the Z-direction space occupied by the entire positioning fixture. A limiting groove 121 extending along the Z direction is provided on the vertical plate 12, and the cylinder body of the cylinder 21 is placed inside the limiting groove 121, and the telescopic rod is connected to the bottom edge of the limiting groove 121. By accommodating the cylinder body of the cylinder 21 in the limiting groove 121, the cylinder 21 is prevented from protruding from the side edge of the table panel 10 along the X direction. At the same time, the cylinder body of the cylinder 21 is limited by the two side walls of the limiting groove 121 to prevent the cylinder body of the cylinder 21 from swinging to a large extent, thereby playing a certain protective role for the cylinder. A cylinder 21 can be installed on each side of the mounting frame 20, and the telescopic rods of the two cylinders 21 are connected to the two vertical plates 12 respectively. The two sides of the mounting frame 20 are driven by the two cylinders 21 at the same time, so that the mounting frame 20 can move up and down more smoothly.

[0093] It should be pointed out that in the above scheme, the mounting frame 20 is driven to move along the Z direction by a driving member so that the mounting frame 20 and the table panel 10 are brought closer to or away from each other, and the two vertical plates 12 can be fixed on the table 72 of the machine tool. For some machine tools with different structures, the vertical plates 12 below the side of the table panel 10 may not be suitable for installation on the table 72. In this regard, the utility model can keep the mounting frame 20 in the same position, and use the driving member to drive the table panel 10 to move up and down, so that the mounting frame 20 and the table panel 10 are brought closer to or away from each other. In this way, when the table panel 10 moves downward to the maximum position, each positioning member on the mounting frame 20 can be in a first position higher than the support surface on the table panel 10, and when the table panel 10 moves upward to the maximum position, each positioning member can be in a second position lower than the lower surface of the table panel 10.

[0094] The above only Figure 1 , 2 The positioning fixture of the utility model is described by taking the first embodiment shown in the figure as an example. Figure 1 , 2 The figure shows a double-station positioning fixture, which has two supporting surfaces on the table panel 10, and two angle leaning components are configured corresponding to the two supporting surfaces, wherein the first positioning member 30, the second positioning member 40, and the third positioning member 50 of the angle leaning component constitute a positioning space corresponding to the upper and lower supporting surfaces, and each positioning member can move along the Z direction by moving the mounting frame 20 along the Z direction; in other embodiments, three or more angle leaning components may also be provided, for example, Figure 3 , 4 Based on the structure shown, three or more longitudinal beams 33 may be fixed on the cross beam 34, each longitudinal beam 33 being installed with a first support member consisting of two first positioning columns 31, three or more longitudinal beams 53 may be fixed on the cross beam 54, each longitudinal beam 53 being installed with a third support member consisting of two third positioning columns 51, and correspondingly, three or more second support members may be installed on the cross beam 43.

[0095] See also Figure 1As shown, a vacuum adsorption plate 11 is fixedly installed on the upper surface of the table panel 10, and the upper surface of the vacuum adsorption plate 11 forms the above-mentioned supporting surface. After the glass plate 9 is placed on the vacuum adsorption plate 11, the glass plate 9 is positioned by various positioning members. After each positioning member is close to the supporting surface to complete the positioning of the glass plate 9, it is pneumatically connected with the vacuum adsorption device of the vacuum adsorption plate 11 to keep the glass plate 9 fixed relative to the table panel 10. At this time, the driving unit drives each positioning member to move away from the supporting surface to be in a slightly opened state, and then the driving member drives the mounting frame 20 to move downward along the Z direction, so that each positioning member sinks below the table panel 10, and the spindle of the machine tool moves along the Y direction to above the glass plate 9 to process the glass plate. In addition, a transition pad 13 is also provided on the table panel 10. The transition pad 13 is detachably fixed to the table panel 10 by bolts or other connection methods. The vacuum adsorption plate 11 is detachably fixed to the transition pad 13. Specifically, the vacuum adsorption plate 11 can be fixed to the transition pad 13 by bolts, and the projection of the outer periphery of the vacuum adsorption plate 11 on the transition pad 13 all falls inside the outer periphery of the transition pad 13. In the preferred embodiment, the vacuum adsorption plate 11 and the transition pad 13 are both set to be square or rectangular, and the vacuum adsorption plate 11 is respectively located on the inner side of the four sides of the transition pad 13. When processing glass plates of different sizes is required, it is usually necessary to replace Vacuum adsorption plates 11 of different sizes are connected to the transition pad 13. After frequent replacement of the vacuum adsorption plate 11, the transition pad 13 is disassembled from the vacuum adsorption plate 11 many times, resulting in an increase in the gap between the connection holes. The vacuum adsorption plate 11 becomes loose after being installed on the transition pad 13, which in turn affects the processing accuracy of the glass plate. At this time, the above problem can be avoided by simply replacing a new transition pad 13. In this way, the installation accuracy of the table panel 10 is avoided from being reduced due to frequent disassembly and assembly when the vacuum adsorption plate 11 is directly connected to the table panel 10. In other words, the table panel 10 is protected by setting the transition pad 13. In order to prevent the transition pad 13 from interfering with the angle leaning assembly, an avoidance groove 131 for avoiding the angle leaning assembly is provided on the transition pad 13, and the avoidance groove 131 extends from the edge of the transition pad 13 toward the inside. For example, the avoidance groove 131 extending along the X direction and along the Y direction may be provided on the transition pad 13, wherein the avoidance groove 131 in the X direction is used to avoid the first positioning member 30 and the third positioning member 50, and the avoidance groove extending along the Y direction is used to avoid the second positioning member 40. The transition pad 13 may be a whole plate, and then the avoidance groove 131 extending along the X and Y directions is processed thereon; the transition pad 13 may also be composed of four small plates, and a certain gap is reserved between adjacent plates to form the avoidance groove 131.

[0096] In the above-mentioned embodiment 1, the driving unit drives one of the positioning members or the rotating members to move, so that the other positioning members are linked with the rotating members, and multiple positioning members are driven to move simultaneously by one driving unit, so that the first positioning member and the second positioning member can move towards or away from the supporting surface in the X direction and the Y direction respectively, thereby simplifying the overall structure of the positioning fixture, reducing the space occupied by the positioning fixture, and facilitating the reasonable layout of the internal space of the machine tool. Moreover, by moving the first positioning member and the second positioning member at the same time by one driving unit, the movement of the first positioning member and the second positioning member can have a high degree of synchronization, thereby improving the positioning accuracy of the positioning fixture. In addition, in one of the embodiments, since the positioning member on the mounting frame can move up and down relative to the table panel, the positioning member can move slightly away from the supporting surface after completing the positioning of the glass plate, separate from the glass plate, and then sink under the table panel. When the spindle of the machine tool processes the glass plate, there will be no interference with the positioning member. In other words, only a relatively small size needs to be reserved between two glass plates placed on adjacent supporting surfaces. This size is sufficient as long as the positioning member that moves in the X direction can sink under the table panel along the Z direction after a small movement in the X direction. When processing large-sized glass plates, there is no need to increase the spacing between adjacent supporting surfaces, which is beneficial to the utilization of the internal space of the machine tool. Since the spacing between glass plates on adjacent supporting surfaces can be small enough, larger glass plates can be placed on the supporting surfaces while the spacing between adjacent supporting surfaces remains unchanged, thereby making the machine tool suitable for processing large-sized glass plates.

[0097] See also Figure 8 , 9 As shown in Figure 10, the positioning fixture of the machine tool of the second embodiment of the utility model, in which the first positioning member, the second positioning member, and the third positioning member are also linked to the rotating member through a connecting rod respectively. Unlike the above-mentioned first embodiment, the above-mentioned mounting frame is not provided in the second embodiment, and its rotating member is pivotally connected to the table panel so that the rotating member can rotate relative to the table panel around an axis consistent with the Z direction, that is, each positioning member will not move relative to the table panel in the Z direction. The connection method between the driving unit, the rotating member, and each positioning member is the same as that of the above-mentioned first embodiment; in the second embodiment, each positioning member is slidably installed on the table panel, and its structure of sliding cooperation with the table panel is similar to the way in which each positioning member cooperates with the mounting frame in the above-mentioned first embodiment.

[0098] Different from the first embodiment, the second embodiment has a different structure for adjusting the position of the support members on each positioning member relative to its respective sliding member in the XY plane. Specifically, two support surfaces arranged along the X direction are provided on the table panel 10, and two support angle components are arranged along the X direction. The support angle components include a first positioning member 93, a second positioning member 94, and a third positioning member 95.

[0099] Similar to the first positioning member of the above-mentioned embodiment 1, the first positioning member 93 includes a first sliding member and a first supporting member installed on the first sliding member. The first sliding member is a longitudinal beam 33 extending along the Y direction. The longitudinal beam 33 is directly installed on the lower surface of the table panel 10 through a linear guide rail located on the lower surface of the table panel 10, and can slide relative to the table panel 10 along the X direction. The two longitudinal beams 33 of the first positioning members 93 of the two supporting corner components are fixedly connected together by a cross beam 34.

[0100] In the second embodiment, the first support member includes two first positioning columns 931 arranged along the Y direction, and an adjustment mechanism is arranged between the first positioning columns 931 and the first sliding member, and the adjustment mechanism includes a connecting plate 932 and a locking member. The first positioning column 931 is fixed on the connecting plate 932, and the first positioning column 91 is fixed to one end of the connecting plate 932, so that the other end of the connecting plate 932 is pivotally matched with the first sliding member, so that the connecting plate 932 can swing relative to the first sliding member in the XY plane, and then the first positioning column 931 can swing relative to the first sliding member in the XY plane. In this way, through the swing of the first positioning column 931, the position of the first positioning column 931 relative to the first sliding member can be adjusted in the X direction and the Y direction, so that the first positioning column 931 can adapt to the positioning of some glass plates with irregular edge shapes. The first positioning column 931 may be fixed to one end of the connecting plate 932, and the other end of the connecting plate 932 may be pivotally connected to the first sliding member by a rotating shaft, and the connecting plate 932 and the first sliding member may be locked by a locking member. Alternatively, a bolt may be used as a locking member, and the bolt may be passed downward through the axial hole at the other end of the connecting plate 932 and then screwed to the first sliding member, so that the bolt acts as a rotating shaft. When adjusting, the connecting plate 932 may be rotated by loosening the bolt. When the first positioning column 931 is adjusted into place, the bolt may be tightened, and the connecting plate 932 may be clamped and fixed by the bolt and the first sliding member.

[0101] It is also possible that a long groove 933 extending along the length direction of the connecting plate 932 is provided, so that the long groove 933 extends in an inclined straight line between the X direction and the Y direction, and an upwardly extending mounting seat 934 is fixed on the first sliding member, the connecting plate 932 is placed on the mounting seat 934, and the locking member is fixedly matched with the mounting seat 934, which is penetrated in the long groove 933 and can slide along the long groove 933. In this way, the connecting plate 932 has the freedom of movement along the long groove 933 relative to the mounting seat 934. In this way, the position of the connecting plate 932 relative to the mounting seat 934 can be adjusted along the long groove 933, and then the first connecting column 931 can be moved with the connecting plate 932, and the relative position of the first connecting column 931 and the first sliding member can be adjusted in the X direction and the Y direction at the same time. When the first connecting column 931 is adjusted to the appropriate position along the connecting plate 932, the locking member is used to fix the connecting plate 932 and the mounting seat 934. The second positioning member 94 may be set to the same structure as the first positioning member 93, and the second positioning column 941 on the second positioning member 94 may be adjusted relative to the second sliding member in the X direction and the Y direction. The third positioning member 95 may also be set to the same structure as the first positioning member 95, and the position of the third positioning column 951 on the third positioning member 95 relative to the third sliding member may be adjusted in the X direction and the Y direction. In short, in actual use, it is possible to choose to set the positioning columns on the above-mentioned positioning members to the above-mentioned adjustable structure. In short, it is sufficient to make the positioning column of one of the positioning members to be the above-mentioned adjustable structure. The installation structure of the second positioning member 94 and the third positioning member 95 may be set to be the same as the first positioning member 93, and no repetitive description is given here. When positioning a glass plate with a special shape on one side, only one of the first positioning member 93, the second positioning member 94, and the third positioning member 95 needs to be adjustable through the above-mentioned structure.

[0102] Furthermore, in the second embodiment, in combination with the above-mentioned scheme of swinging the connecting plate and the scheme of arranging the long slot 933 on the connecting plate to enable the first positioning column 931 to translate, the above-mentioned adjustment mechanism enables the positioning column to translate in the XY plane and swing at an angle in the XY plane as required, so as to Fig. 9Taking the first positioning member 93 shown in the figure as an example, the connecting plate 932 is set to be strip-shaped, and its extension direction is parallel to the XY plane. The first positioning column 931 is fixed to one end of the connecting plate 932, and the locking member is a locking bolt. The locking bolt crosses the long groove 933 from top to bottom and is screwed on the mounting seat 934. The locking bolt can not only slide along the long groove 933, but also the outer diameter of the locking bolt is slightly smaller than the width of the long groove 933, so that the locking bolt can rotate relative to the connecting plate 932 after passing through the long groove 933. When the position of the first positioning column 931 needs to be adjusted, the locking bolt can be loosened. The bolt is used to move the connecting plate 932 so that the connecting plate 932 moves horizontally in the XY plane, and the connecting plate 932 is swung so that the connecting plate 932 swings in the XY plane, thereby realizing that the first positioning column 931 can translate along the XY plane and swing in the XY plane. After adjusting the position of the first positioning column 931, the locking bolt is tightened to keep the connecting plate 932 and the mounting seat 934 fixed; in this way, when positioning some glass plates with irregular edge shapes, the first positioning column 931 can be adjusted so that the first positioning column 931 can adapt to the edge shape of the glass plate. The installation structure of the second positioning member 94 and the third positioning member 95 can be set to be the same as the first positioning member 93, and no repeated description is given here. It should be noted that the above-mentioned adjustment structure is not limited to the structure using a connecting plate and a locking bolt, it can also be other structures. For example, a slide rail that can swing in the XY plane is installed on the sliding part of the positioning part, and the positioning column is slidably installed on the slide rail. Locking parts are provided between the slide rail and the sliding part, and between the positioning column and the slide rail. After the positioning column is adjusted into place, the positioning column and the slide rail, as well as the slide rail and the sliding part are locked respectively.

[0103] It is only necessary to make at least one of the first positioning member 93, the second positioning member 94, and the third positioning member 95 adjustable through the above structure to cope with a glass plate with at least one side having anisotropic properties. When positioning a glass plate with multiple sides having anisotropic properties, the positioning member corresponding to the anisotropic side of the glass plate can be set to the above adjustable structure.

[0104] See also Fig.10 , 11 A positioning block 81 may be provided on the machine platform of the machine tool, and a fourth positioning member is formed on the opposite side of the second positioning member 94 through the positioning block 81. A guide member 73 is provided on the machine platform of the machine tool, and a guide groove 730 extending along the Y direction is provided on the guide member 73. The positioning block 81 is slidably embedded in the guide groove 730, and a locking bolt is screwed on the guide member 73. The locking bolt is used to lock the positioning block 81 and the guide member 73. Specifically, a long groove 811 extending along the Y direction is provided on the positioning block 81, and the locking bolt passes through the long groove 811 from top to bottom and is screwed on the guide member 73.

[0105] The positioning fixture in this embodiment uses a driving unit to directly drive one of the positioning members to slide, and the positioning member is linked with the rotating member through its connecting rod and drives the rotating member to rotate, so that the other positioning members are driven by the rotating member to achieve synchronous linkage of the three positioning members corresponding to the three surfaces of the workpiece, and further cooperate with the fourth positioning member to increase the adjustment range of the Y-direction positioning with the help of the relative displacement of the mobile worktable. A driving unit drives multiple positioning members to move simultaneously, so that the first positioning member and the third positioning member move closer to or away from the supporting surface in the X direction, and the second positioning member and the fourth positioning member move closer to or away from the supporting surface in the Y direction, which simplifies the overall structure of the positioning fixture, reduces the occupied space of the positioning fixture, and is conducive to the reasonable layout of the internal space of the machine tool. In addition, a driving unit simultaneously moves the first positioning member, the second positioning member and the third positioning member, so that the movement of the first positioning member, the second positioning member and the third positioning member has a high degree of synchronization, thereby improving the positioning accuracy of the positioning fixture.

[0106] The above description is only a preferred embodiment of the utility model, which is a further detailed description of the utility model in combination with specific preferred implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. Positioning fixture for a machine tool, characterized in that, a platen movable along the Y direction is arranged on the machine table of the machine tool, a table board is installed on the platen, a support surface is arranged on the table board, machining stations of the machine tool are formed at the support surfaces, and further comprising a corner component and a driving unit, the corner component includes a second positioning member, and the driving unit drives the second positioning member to move along the Y direction so that the second positioning member approaches or moves away from the corresponding support surface; the corner component further includes a fourth positioning member located on the opposite side of the second positioning member, and the fourth positioning member is fixed on the machine table of the machine tool and can cooperate with the second positioning member to realize Y-direction positioning of the workpiece.

2. The positioning fixture for a machine tool according to claim 1, characterized in that, the corner component further includes a first positioning member, and the driving unit is used to drive the first positioning member to move along the X direction so that the first positioning member approaches or moves away from the corresponding support surface.

3. The positioning fixture for a machine tool according to claim 1 or 2, characterized in that, it includes more than two corner components, two or more support surfaces arranged along the X direction are provided on the upper surface of the table board, the more than two corner components are arranged along the X direction and correspond to the two or more support surfaces one by one, each corner component includes a first positioning member and a second positioning member, the first positioning members of all corner components are fixedly matched, and the second positioning members of all corner components are fixedly matched.

4. The positioning fixture for a machine tool according to claim 3, characterized in that, it further includes a rotating member, a first connecting rod, and a second connecting rod, one end of the first connecting rod is hinged to the rotating member and the other end is hinged to the first positioning member, and one end of the second connecting rod is hinged to the rotating member and the other end is hinged to the second positioning member; the driving unit is used to drive the rotating member to rotate around a rotation axis consistent with the Z direction so as to drive the first positioning member and the second positioning member to move through the first connecting rod and the second connecting rod respectively, so that the first positioning member and the second positioning member approach or move away from the corresponding support surfaces in the X direction and the Y direction respectively at the same time; or when the driving unit is used to drive the first positioning member to move along the X direction so that the first positioning member approaches or moves away from the corresponding support surface, the first connecting rod moves along with the first positioning member to drive the rotating member to rotate around a rotation axis consistent with the Z direction so as to drive the second positioning member to move through the second connecting rod so that the second positioning member approaches or moves away from the corresponding support surface; or when the driving unit is used to drive the second positioning member to move along the Y direction so that the second positioning member approaches or moves away from the corresponding support surface, the second connecting rod moves along with the second positioning member to drive the rotating member to rotate around a rotation axis consistent with the Z direction so as to drive the first positioning member to move through the first connecting rod so that the first positioning member approaches or moves away from the corresponding support surface.

5. The positioning fixture for a machine tool according to claim 4, characterized in that, the corner component further includes a third positioning member located on the opposite side of the first positioning member, when the driving unit drives the first positioning member to move along the X direction, the third positioning member is also driven to move along the X direction, the third positioning members on all corner components are fixedly matched, a third connecting rod is arranged between the rotating member and the third positioning member, one end of the third connecting rod is hinged to the rotating member and the other end is hinged to the third positioning member.

6. The positioning fixture for a machine tool according to claim 4, It is characterized in that The driving unit comprises a motor, a lead screw driven by the motor, and a nut seat sleeved on the lead screw, wherein the nut seat is fixedly matched with one of the first positioning member and the second positioning member.

7. The positioning fixture for a machine tool according to claim 4, It is characterized in that The driving unit is a driving motor whose output shaft is connected to the rotating member.

8. The positioning fixture for a machine tool according to claim 5, It is characterized in that The first positioning member includes a first sliding member that can slide relative to the table panel along the X direction, and a first supporting member installed on the first sliding member, and the first sliding members of multiple first positioning members are fixedly matched; the second positioning member includes a second sliding member that can slide relative to the table panel along the X direction, and a second supporting member installed on the second sliding member, and the second sliding members of multiple second positioning members are fixedly matched; the third positioning member includes a third sliding member that can slide relative to the table panel along the X direction, and a third supporting member installed on the third sliding member, and the third sliding members of multiple third positioning members are fixedly matched.

9. The positioning fixture for a machine tool according to claim 8, It is characterized in that The first supporting member and the third supporting member are in the form of a plate or strip extending along the Y direction, and the second supporting member is in the form of a plate or strip extending along the X direction.

10. The positioning fixture for a machine tool according to claim 8, It is characterized in that The first support member includes at least two first positioning posts arranged along the Y direction; the second support member includes at least two second positioning posts arranged along the X direction; and the third support member includes at least two third positioning posts arranged along the Y direction.

11. The positioning fixture for a machine tool according to claim 10, It is characterized in that The first positioning column is fixed to the first sliding member in a manner that the position thereof is adjustable relative to the first sliding member along the XY plane; or The second positioning column is fixed to the second sliding member in a manner that the position thereof is adjustable relative to the second sliding member along the XY plane; or The third positioning column is fixed on the third sliding member in a manner that the position thereof can be adjusted relative to the third sliding member along the XY plane.

12. The positioning fixture for a machine tool according to claim 11, It is characterized in that The first positioning column is fixed to the first sliding member in a manner that it can be adjusted along the X direction; or The second positioning column is fixed to the second sliding member in a manner that it can be adjusted along the Y direction; or The third positioning column is fixed on the third sliding member in a manner that it can be adjusted along the X direction.

13. The positioning fixture for a machine tool according to claim 12, It is characterized in that The first sliding member is fixedly connected to a first base and a first connecting seat on the first base, a first positioning column is fixed to the first connecting seat, the first positioning column is arranged at a certain distance from the center position of the first connecting seat in the X direction, and the first connecting seat and the first base are fixedly connected together by at least two first bolts penetrating the two along the Z direction; or The second sliding member is fixedly connected to a second base and a second connecting seat on the second base, a second positioning column is fixed to the second connecting seat, the second positioning column is arranged at a certain distance from the center position of the second connecting seat in the Y direction, and the second connecting seat and the second base are fixedly connected together by at least two second bolts penetrating the two along the Z direction; or The third sliding member is fixedly connected to a third base and a third connecting seat located on the third base, a third positioning column is fixed on the third connecting seat, the third positioning column is arranged at a certain distance from the center position of the third connecting seat in the X direction, and the third connecting seat and the third base are fixedly connected together by at least two third bolts passing through the two along the Z direction.

14. The positioning fixture for a machine tool according to claim 11, It is characterized in that A first adjustment mechanism is provided between the first positioning column and the first sliding member, the first adjustment mechanism includes a first connecting plate and a first locking member, the first positioning column is fixed to the first connecting plate and extends upward along the Z direction, the first connecting plate is movably matched with the first sliding member in a manner that it can swing relative to the first sliding member in the XY plane, and the first locking member is used to fix the first connecting plate and the first sliding member together when the first connecting plate moves to a predetermined position relative to the first sliding member; or A second adjustment mechanism is provided between the second positioning post and the second sliding member, the second adjustment mechanism includes a second connecting plate and a second locking member, the second positioning post is fixed to the second connecting plate and extends upward along the Z direction, the second connecting plate is movably matched with the second sliding member in a manner that it can swing relative to the second sliding member in the XY plane, and the second locking member is used to fix the second connecting plate and the second sliding member together when the second connecting plate moves to a predetermined position relative to the second sliding member; or A third adjusting mechanism is arranged between the third positioning column and the third sliding member, and the third adjusting mechanism includes a third connecting plate and a third locking member. The third positioning column is fixed on the third connecting plate and extends upward along the Z direction. The third connecting plate can be movably cooperated with the third sliding member in a manner that it can swing relative to the third sliding member in the XY plane. The third locking member is used to fix the third connecting plate and the third sliding member together when the third connecting plate moves to a predetermined position relative to the third sliding member.

15. The positioning fixture for a machine tool according to claim 14, It is characterized in that The first connecting plate is movably matched with the first sliding member in a manner that it can translate relative to the first sliding member along the XY plane and swing relative to the first sliding member in the XY plane, and the first locking member is used to fix the first connecting plate and the first sliding member together when the first connecting plate moves to a predetermined position relative to the first sliding member; or The second connecting plate is movably matched with the second sliding member in a manner that it can translate relative to the second sliding member along the XY plane and swing relative to the second sliding member in the XY plane, and the second locking member is used to fix the second connecting plate and the second sliding member together when the second connecting plate moves to a predetermined position relative to the second sliding member; or The third connecting plate cooperates with the third sliding member in a manner that it can translate relative to the third sliding member along the XY plane and swing relative to the third sliding member within the XY plane. The third locking member is used to fix the third connecting plate and the third sliding member together when the third connecting plate moves to a predetermined position relative to the third sliding member.

16. The positioning fixture for a machine tool according to claim 15, It is characterized in that The first connecting plate is strip-shaped and its extension direction is parallel to the XY plane, the first positioning column is fixed to one end of the first connecting plate, the first connecting plate is provided with a first long groove extending along its length direction, the first locking member is a first locking bolt, the first locking bolt crosses the first long groove so that the first connecting plate is pivotally matched with the first locking bolt and can slide relative to the first locking bolt along the extension direction of the first long groove, the first locking bolt is threadedly connected to the first sliding member so that the first connecting plate is clamped and fixed by the nut of the first locking bolt and the first sliding member when the first locking bolt is tightened; or The second connecting plate is strip-shaped and its extension direction is parallel to the XY plane, the second positioning column is fixed to one end of the second connecting plate, the second connecting plate is provided with a second long groove extending along its length direction, the second locking member is a second tightening bolt, the second locking bolt crosses the second long groove so that the second connecting plate and the second locking bolt are pivotally matched and can slide relative to the second locking bolt along the extension direction of the second long groove, the second locking bolt is screwed on the second sliding member so that when the second locking bolt is tightened, the second connecting plate is clamped and fixed by the nut of the second locking bolt and the second sliding member; or The third connecting plate is strip-shaped and its extension direction is parallel to the XY plane. The third positioning column is fixed at one end of the third connecting plate. The third connecting plate is provided with a third long groove extending along its length direction. The third locking member is a third tightening bolt. The third locking bolt crosses the third long groove so that the third connecting plate and the third locking bolt can pivotally cooperate and can slide relative to the third locking bolt along the extension direction of the third long groove. The third locking bolt is screwed on the third sliding member so that the third connecting plate is clamped and fixed by the nut of the third locking bolt and the third sliding member when the third locking bolt is tightened.

17. The positioning fixture for a machine tool according to claim 8, It is characterized in that The table panel is provided with a plurality of second through slots which penetrate from the lower surface to the upper surface to avoid the first positioning member, the second positioning member and the third positioning member.

18. The positioning fixture for a machine tool according to claim 17, It is characterized in that The second through slot located at the edge of the table panel forms a second opening at the corresponding side of the table panel so that the first positioning member, the second positioning member and the third positioning member can move from the corresponding first through slot opening to the outer side of the edge of the table panel.

19. The positioning fixture for a machine tool according to claim 17, It is characterized in that The second through slots of the first positioning member and the third positioning member on adjacent sides of two adjacent corner assemblies are staggered along the Y direction.

20. The positioning fixture for a machine tool according to claim 5, It is characterized in that The rotating member is pivotally connected to the lower surface of the table panel, and the driving unit is installed on the lower surface of the table panel.

21. The positioning fixture for a machine tool according to claim 5, It is characterized in that A mounting frame is arranged below the table panel, the rotating member is pivotally connected to the mounting frame, the first positioning member, the second positioning member and the third positioning member are all slidably mounted on the mounting frame, and the driving unit is mounted on the mounting frame.

22. The positioning fixture for a machine tool according to claim 21, It is characterized in that One of the mounting frame and the table panel moves up and down relative to the other along the Z direction under the drive of a driving member, so that the first positioning member, the second positioning member and the third positioning member can move between a first position higher than the supporting surface and a second position lower than the lower surface of the table panel.

23. The positioning fixture for a machine tool according to claim 22, It is characterized in that The rotating member is located below the mounting frame, and the mounting frame is provided with a plurality of first through slots which penetrate from the lower surface to the upper surface for the first positioning member, the second positioning member and the third positioning member to pass through from bottom to top.

24. The positioning fixture for a machine tool according to claim 23, It is characterized in that The first through slot at the edge of the mounting frame forms a first opening at the corresponding side of the mounting frame so that the first positioning member, the second positioning member and the third positioning member can move from the first opening of the corresponding first through slot to the outer side of the edge of the mounting frame.

25. The positioning fixture for a machine tool according to claim 23, It is characterized in that The first through slots for allowing the first positioning members and the third positioning members on adjacent sides of two adjacent corner assemblies to pass through are staggered along the Y direction.

26. The positioning fixture for a machine tool according to claim 22, It is characterized in that The upper surface of the mounting frame and the lower surface of the table panel are matched with each other in structure, so that when the mounting frame and the table panel are brought close together, the mounting frame can be as close to the supporting surface as possible.

27. The positioning fixture for a machine tool according to claim 22, It is characterized in that Vertical plates extending downward are respectively provided on both sides of the table panel, the mounting frame is placed between the two table panels and its two sides are slidably mounted on the two vertical plates, the driving member is a cylinder used to drive the mounting frame to move along Z relative to the table panel, the cylinder body is fixed on the mounting frame, the telescopic rod extends downward and is connected to the vertical plate, and the top surface of the cylinder body is flush with or lower than the upper surface of the mounting frame.

28. The positioning fixture for a machine tool according to claim 27, It is characterized in that A limiting groove extending along the Z direction is arranged on the vertical plate, a cylinder body of the cylinder is placed in the limiting groove, and a telescopic rod is connected to the bottom edge of the limiting groove.

29. The positioning fixture for a machine tool according to claim 1, It is characterized in that A mounting plate and fastening bolts for fixing the mounting plate to the machine platform are arranged on the machine platform. A waist hole extending along the Y direction is arranged on the mounting plate. The fastening bolts are screwed onto the machine platform after passing through the waist hole. The fourth positioning member is fixed on the mounting plate.

30. The positioning fixture for a machine tool according to claim 1, It is characterized in that The fourth positioning piece is a positioning block. A guide groove extending along the Y direction is provided on the machine tool platform. The positioning block is slidably embedded in the guide groove. A locking bolt is screwed on the machine tool platform for fixing the positioning block on the machine tool platform when the positioning block slides along the guide groove to a predetermined position.

31. The positioning fixture for a machine tool according to claim 1, It is characterized in that A vacuum adsorption plate is fixedly installed on the upper surface of the table panel, and the upper surface of the vacuum adsorption plate forms a supporting surface. A transition pad is fixedly connected to the table panel in a detachable manner. The vacuum adsorption plate is detachably fixed to the transition pad. The projection of the outer periphery of the vacuum adsorption plate on the transition pad all falls into the inner periphery of the outer periphery of the transition pad. The transition pad is provided with an avoidance groove extending from its edge toward the inside to avoid the corner component.

Images