A tooling fixture for machine tools

Abstract

The utility model provides a kind of tooling fixture for machine tool, belong to machine tool technical field.It solves the problem of low precision of existing fixture clamping.The tooling fixture for machine tool is provided with the connecting portion that is set to protrude downward in the middle of the bottom of connecting column, the left and right sides of the bottom of connecting column are provided with recessed step groove, step groove is set to be inclined inward and downward in the top step surface, the top of locking plate is provided with inclined guiding surface that is set to be inclined inward and downward, locking plate is slidably arranged on base and is embedded into corresponding step groove, guiding surface is attached with corresponding step surface, adjusting hole is provided in connecting portion, the aperture of adjusting hole is greater than the outer diameter of the first adjusting bolt rod, the first adjusting bolt passes through adjusting hole and a pair of locking plate, rotate the first adjusting bolt to make locking plate slide along base and make connecting column move up and down by locking plate.The tooling fixture for machine tool has the advantage of high clamping precision.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tools and relates to a fixture for machine tools. Background Art

[0002] The machine tool includes a bed, molds and other components. During the installation process, the mold needs to be lifted to the set position on the bed by a crane and fixed to the bed by a fastening mechanism. When installing the workpiece on the bed, it can also be fixed by the fastening mechanism.

[0003] Existing fastening mechanisms for fixing, for example, Chinese patent literature discloses a multi-station size-adjustable connecting rod processing device installed on a machine tool turntable [application number: 201120222850.8; authorization announcement number: CN202147147U], which includes a plurality of clamp bases fixed on the machine tool turntable, each clamp base is recessed with a slider groove, and a slider movable in its extension direction is installed in the slider groove. The two ends of the slider groove are respectively fixedly connected to the adjustment block, and each adjustment block is threaded with a bolt passing through the adjustment block, and the end of each bolt abuts against the side wall of the slider. The slider is provided with a connecting portion, and one end of the connecting rod is installed on the connecting portion.

[0004] In a processing device with this structure, the slider can move along the slider groove, thereby changing the position of the connecting part, so that the connecting part can better fix the connecting rod. However, in a processing device with this structure, the connecting part can only move in one direction, that is, it moves along the sliding groove with the slider, which causes the problem that the connecting rod cannot move to the set position. Similarly, when installing a mold through a processing device with this structure, a fixed column protrudes from the mold and is fixedly connected to the connecting part, so that the mold is installed on the slider, so that the mold can be installed on the bed of the machine tool. However, installing a mold requires the use of multiple fixed columns, that is, multiple processing devices are required. Due to the position of the fixed columns and the position of the mold or the workpiece itself, as well as processing errors, there is a certain deviation in the position. Using a processing device with this structure cannot achieve precise fixation. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a fixture for machine tools, the technical problem to be solved is how to accurately adjust the height of the fixture.

[0006] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole, the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole, the bosses comprise a through-hole, a screw bolt, and a nut.

[0007] The bottom of the mold or workpiece has a protruding fixed column, and the base is used to be fixedly connected to the bed of the machine tool. The connecting column and the locking plate cooperate to adjust the overall height of the fixture, so that the locking structure can accurately lock the fixed column, thereby accurately locking the mold or workpiece on the machine tool. When adjusting the height of the fixture, first loosen the second adjusting bolt, and a pair of locking plates are respectively embedded in the corresponding step grooves. The first adjusting bolt passes through one of the locking plates and the adjustment hole and is threadedly connected to the other locking plate. At this time, there is a certain distance between the inner side of the locking plate and the connecting part. Tighten the first adjusting bolt to drive the pair of locking plates to move inward. The aperture of the adjustment hole is larger than the outer diameter of the rod of the first adjusting bolt. The first adjusting bolt will not hinder the movement of the connecting column. The step surface and the guide surface are both tilted inward and downward. Through the cooperation of the step surface and the guide surface, the locking plate When the locking mechanism is moved inward, contact with the connecting column generates a component force that pushes the connecting column upward, and the locking plate pushes the connecting column upward. Then, the second adjusting bolt is tightened to connect the connecting column to the base, so that the connecting column presses the locking plate to the base, thereby achieving the upward movement of the locking structure. Loosening the first adjusting bolt drives the pair of locking plates to move outward. Under the action of its own weight, the connecting column moves downward through the cooperation of the step surface and the guide surface. Then, the second adjusting bolt is tightened to connect the connecting column to the base, so that the connecting column presses the locking plate to the base, thereby achieving the downward movement of the locking structure. Through the above adjustment steps, the position of the locking structure is adjusted to move the locking structure into place, so that the locking structure can better lock the fixed column. Moreover, the step surface and the guide surface are both inclined planes. The distance of movement of the locking structure is adjusted by the offset between the step surface and the guide surface, so that the locking structure can stay in any position, thereby improving the movement accuracy of the locking structure and the locking accuracy of the fixture.

[0008] In the aforementioned machine tool fixture, the bottom of the locking plate is flat, and the top of the base is flat. The bottom of the locking plate abuts against the flat top of the base. The locking plate is directly placed on the base, and the contact surface is flat. The locking plate moves smoothly relative to the base, thereby smoothly adjusting the overall height of the fixture, allowing the locking structure to move into position, and improving the locking accuracy of the fixture.

[0009] In the aforementioned machine tool fixture, both front and rear sides of the bottom of the connecting column have first fixing holes that are tilted inward and downward. The cross-section of the first fixing hole is elongated, and the length direction of the cross-section of the first fixing hole is arranged along the front-to-back direction of the bottom of the connecting column. The second adjustment bolt passes through the first fixing hole and is inserted into the base to fix the connecting column to the base. The cross-section of the first fixing hole is elongated, leaving a certain margin so that the second adjustment bolt inserted into the first fixing hole will not touch or get stuck when the connecting column moves up and down. At the same time, the first fixing hole is tilted inward and downward, and the second adjustment bolt is also tilted inward and downward. This structure does not occupy too much external space, reduces the space occupied by the fixture, and makes the overall structure of the fixture compact. Moreover, this structure allows the connecting column to be translated a certain distance in the horizontal direction, thereby adjusting the horizontal position of the locking structure and improving the locking accuracy of the fixture.

[0010] In the aforementioned machine tool fixture, the adjustment hole is located at the center of the connecting portion, and the pair of first fixing holes both pass through the connecting portion and are symmetrically arranged around the adjustment hole. This structure ensures that the force applied to the connecting column during movement and fixation is most uniform, improving the stability of the connecting column and thereby enhancing the locking accuracy of the fixture.

[0011] As another example, in the aforementioned machine tool fixture, the connecting column has first fixing holes disposed vertically on both the front and rear sides of its bottom portion, and the second adjusting bolt passes through the first fixing holes and into the base to secure the connecting column to the base. This provides a simple structure and facilitates manufacturing.

[0012] In the aforementioned machine tool fixture, the base includes a bottom plate, an adjustment plate, a third adjustment bolt, and a fourth adjustment bolt. The bottom plate has a recessed mounting slot, the adjustment plate being embedded in the mounting slot, a gap being provided between the adjustment plate and the slot wall along the front-to-back direction of the connecting column, the third adjustment bolt passing through the bottom plate along the front-to-back direction of the connecting column and resting against the adjustment plate, and rotating the third adjustment bolt causes the adjustment plate to move along the front-to-back direction of the connecting column. The adjustment plate has a plurality of second, elongated fixing holes, the length of the second fixing holes being aligned with the front-to-back direction of the connecting column, the fourth adjustment bolt passing through the second fixing holes and extending into the bottom plate securely connects the adjustment plate to the bottom plate, the locking plate being positioned on the adjustment plate, and the connecting column being securely connected to the adjustment plate by the second adjustment bolt. This structure allows the adjustment plate to translate horizontally, thereby changing the horizontal position of the connecting column, thereby adjusting the horizontal position of the locking structure and improving the locking accuracy of the fixture.

[0013] In the aforementioned machine tool fixture, the mounting slot is located in the middle of the base plate, and a plurality of arcuate third fixing holes are provided at the edge of the base plate, surrounding the mounting slot. This structure allows the base to be rotated a certain angle after being mounted on the machine tool bed, thereby enabling the connecting column to be rotated a certain angle, allowing the connecting column to rotate to any position within a small range. This allows the horizontal angle of the locking structure to be adjusted, thereby improving the locking accuracy of the fixture.

[0014] In the aforementioned machine tool fixture, the locking structure includes a plurality of fifth adjustment bolts and a locking hole recessed in the top of a connecting column. The locking hole has a plurality of dovetail grooves recessed in the wall thereof and communicating with the locking hole. A dovetail block is positioned in the dovetail groove. The fifth adjustment bolt passes through the connecting column and extends into the dovetail groove. Rotating the fifth adjustment bolt moves the dovetail block. The fixing column is inserted into the locking hole. When the fifth adjustment bolt is tightened, the fifth adjustment bolt pushes the dovetail block to move and clamp the fixing column, locking the fixing column in the locking hole and securing the mold or workpiece to the fixture. The cooperation between the dovetail groove and the dovetail block enables the dovetail block to move in a predetermined direction while preventing it from falling out of the dovetail groove.

[0015] In the aforementioned machine tool fixture, a dust shield is placed on top of the dovetail slot. The bottom of the dust shield rests on the dovetail block, and the top of the dust shield is flush with the top of the connecting column. The dust shield prevents impurities from entering the dovetail slot and allows the fixture to more tightly contact the workpiece.

[0016] In the aforementioned machine tool fixture, the outer circumferential wall of the fixed column, which is locked by the locking structure, has an annular recessed locking groove. The dovetail block is embedded in the locking groove and abuts against the upper and lower groove walls. This structure improves the clamping force and prevents the fixture and workpiece from falling off after being locked.

[0017] Compared with the prior art, the machine tool fixture provided by the present invention has the following advantages:

[0018] 1. The locking structure of this fixture can be adjusted in both vertical and horizontal directions, so that the locking structure can be moved into place, so that the locking structure can better lock the fixed column and improve the locking accuracy of the fixture.

[0019] 2. The locking plate of this fixture is directly placed on the adjustment plate, and the locking plate cooperates with the step surface of the connecting column through the guide surface set at the top. The connecting column can be raised and lowered by rotating the first adjusting bolt, so that the locking structure can stay in any position. The design is ingenious and improves the locking accuracy of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the fixture used for this machine tool.

[0021] Figure 2 This is a cross-sectional view of the fixture for this machine tool along the front-to-back direction of the connecting column.

[0022] Figure 3 This is a cross-sectional view of the fixture for this machine tool along the left and right directions of the connecting column.

[0023] Figure 4 This is an exploded view of the fixture base for this machine tool.

[0024] Figure 5 It is a structural diagram of the connecting column and locking structure of the fixture for this machine tool.

[0025] In the figure, 1. base; 11. bottom plate; 111. mounting groove; 112. third fixing hole; 12. adjusting plate; 121. second fixing hole; 13. third adjusting bolt; 14. fourth adjusting bolt; 2. connecting column; 21. connecting part; 211. adjusting hole; 22. step groove; 221. step surface; 23. first fixing hole; 3. locking plate; 31. guide surface; 4. first adjusting bolt; 5. second adjusting bolt; 6. fixing column; 61. locking groove; 7. locking structure; 71. fifth adjusting bolt; 72. locking hole; 73. dovetail groove; 74. dovetail block; 75. dust shield. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1 As shown, the fixture for this machine tool includes a base 1, a connecting column 2, a pair of locking plates 3, a first adjusting bolt 4 and a second adjusting bolt 5.

[0028] The middle of the bottom of the connecting column 2 has a connecting portion 21 protruding downward. Figure 2 、 Figure 3 As shown, the connecting portion 21 has an adjustment hole 211 extending therethrough. The adjustment hole 211 is located at the center of the connecting portion 21, and the diameter of the adjustment hole 211 is larger than the outer diameter of the rod of the first adjustment bolt 4. The left and right sides of the bottom of the connecting column 2 each have a recessed stepped groove 22. The two stepped grooves 22 are symmetrically arranged around the connecting portion 21, and the stepped surface 221 at the top of the stepped groove 22 is tilted inward and downward. The top of the locking plate 3 has a guide surface 31 tilted inward and downward. The locking plate 3 is slidably mounted on the base 1 and embedded in the corresponding stepped groove 22. The guide surface 31 is aligned with the corresponding stepped surface 221. The first adjustment bolt 4 passes through one of the locking plates 3 and the adjustment hole 211, and then is threadedly connected to the other locking plate 3.

[0029] In this embodiment, the front and rear sides of the bottom of the connecting column 2 each have a first fixing hole 23 arranged obliquely inward and downward. The cross-section of the first fixing hole 23 is an elongated strip, and the length direction of the cross-section of the first fixing hole 23 is arranged along the front-to-back direction of the bottom of the connecting column 2. A pair of first fixing holes 23 both pass through the connecting portion 21 and are symmetrically arranged around the adjustment hole 211. The second adjustment bolt 5 passes through the first fixing hole 23 and is inserted into the base 1 to secure the connecting column 2 to the base 1. In actual production, the front and rear sides of the bottom of the connecting column 2 each have a first fixing hole 23 arranged in a vertical direction. The second adjustment bolt 5 passes through the first fixing hole 23 and is inserted into the base 1 to secure the connecting column 2 to the base 1.

[0030] like Figure 4As shown, the base 1 includes a base plate 11, an adjustment plate 12, a third adjustment bolt 13, and a fourth adjustment bolt 14. The base plate 11 has a recessed mounting slot 111 located in the middle of the base plate 11. The adjustment plate 12 is embedded in the mounting slot 111. A gap is formed between the adjustment plate 12 and the slot wall of the mounting slot 111 along the front-to-back direction of the connecting column 2. The third adjustment bolt 13 passes through the base plate 11 along the front-to-back direction of the connecting column 2 and abuts against the adjustment plate 12. Rotating the third adjustment bolt 13 causes the adjustment plate 12 to move along the front-to-back direction of the connecting column 2. In this embodiment, the adjustment plate 12 has two elongated second fixing holes 121. The length of the second fixing holes 121 is aligned with the front-to-back direction of the connecting column 2. The fourth adjustment bolt 14 passes through the second fixing holes 121 and is inserted into the base plate 11 to securely connect the adjustment plate 12 to the base plate 11. In actual production, the number of second fixing holes 121 can be four or six.

[0031] The bottom of the locking plate 3 is flat, and the top of the adjustment plate 12 is also flat. The bottom of the locking plate 3 rests on the flat top of the adjustment plate 12. The connecting column 2 is fixed to the adjustment plate 12 via the second adjustment bolt 5. In this embodiment, four arc-shaped third fixing holes 112 are defined along the edge of the base plate 11. The third fixing holes 112 are arranged around the mounting slot 111. In actual production, the number of third fixing holes 112 can be three or six.

[0032] The top of the connecting column 2 has a locking structure 7 for locking the fixing column 6 protruding from the workpiece. Figure 5 As shown, the locking structure 7 includes two fifth adjustment bolts 71 and a locking hole 72 recessed in the top of the connecting column 2. The wall of the locking hole 72 has two dovetail grooves 73 recessed and connected to the locking holes 72. A dovetail block 74 is placed in the dovetail groove 73, and a dust shield 75 is placed on the top of the dovetail groove 73. The bottom of the dust shield 75 abuts against the dovetail block 74, and the top of the dust shield 75 is flush with the top of the top of the connecting column 2. The circumferential outer wall of the fixed column 6 has an annular recessed locking groove 61. The fifth adjustment bolt 71 passes through the connecting column 2 and extends into the dovetail groove 73. Rotating the fifth adjustment bolt 71 pushes the dovetail block 74 to move, causing the dovetail block 74 to embed into the locking groove 61 and abut against the upper and lower groove walls of the locking groove 61.

[0033] When adjusting, first rotate the base 1 to change the angle of the connecting column 2, then move the adjusting plate 12 to change the horizontal position of the connecting column 2, and then move the locking plate to change the height of the connecting column 2. After the position of the connecting column 2 is adjusted into place, lock the base plate 11, the second adjusting bolt 5 and the fourth adjusting bolt 14, lift the workpiece by crane and move it so that the fixed column 6 is embedded in the corresponding locking hole 72, and then tighten the fifth adjusting bolt 71 so that the dovetail block 74 locks the fixed column 6.

[0034] The first adjusting bolt 4 is rotated to slide the locking plate 3 along the base 1 and drive the connecting column 2 to move up and down through the locking plate 3 , and the connecting column 2 is fixed to the base 1 through the second adjusting bolt 5 .

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0036] Although this document frequently uses terms such as base 1, bottom plate 11, mounting groove 111, third fixing hole 112, adjustment plate 12, second fixing hole 121, third adjusting bolt 13, fourth adjusting bolt 14, connecting column 2, connecting portion 21, adjusting hole 211, stepped groove 22, stepped surface 221, first fixing hole 23, locking plate 3, guide surface 31, first adjusting bolt 4, second adjusting bolt 5, fixing column 6, locking groove 61, locking structure 7, fifth adjusting bolt 71, locking hole 72, dovetail groove 73, dovetail block 74, and dust shield 75, other terms may be used. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations would be contrary to the spirit of the present invention.

Claims

1. A fixture for a machine tool, comprising a base (1), characterized in that: It also includes a connecting column (2), a pair of locking plates (3), a first adjusting bolt (4) and a second adjusting bolt (5), wherein the middle of the bottom of the connecting column (2) has a connecting portion (21) protruding downward, and the left and right sides of the bottom of the connecting column (2) both have recessed step grooves (22), and the step surface (221) at the top of the step groove (22) is tilted inward and downward, and the top of the locking plate (3) has a guide surface (31) tilted inward and downward, and the locking plate (3) is slidably set on the base (1) and embedded in the corresponding step groove (22). The guide surface (31) is fitted with the corresponding step surface (221), and the connecting portion (21) has a penetrating adjustment hole (211). The diameter of the adjustment hole (211) is larger than the outer diameter of the rod of the first adjustment bolt (4). The first adjustment bolt (4) passes through the adjustment hole (211) and a pair of the locking plates (3). The first adjustment bolt (4) is rotated to make the locking plates (3) slide along the base (1) and drive the connecting column (2) to move up and down through the locking plates (3). The connecting column (2) is fixed to the base (1) through the second adjustment bolt (5). The connecting column (2 ) has a locking structure (7) at the top, the base (1) includes a bottom plate (11), an adjustment plate (12), a third adjustment bolt (13) and a fourth adjustment bolt (14), the bottom plate (11) has a recessed mounting groove (111), the adjustment plate (12) is embedded in the mounting groove (111), and a gap is provided between the adjustment plate (12) and the groove wall of the mounting groove (111) along the front-back direction of the connecting column (2), the third adjustment bolt (13) passes through the bottom plate (11) along the front-back direction of the connecting column (2) and abuts against the adjustment plate (12), and the third adjustment bolt (13) is rotated. The adjusting bolt (13) enables the adjusting plate (12) to move along the front-to-back direction of the connecting column (2). The adjusting plate (12) has a plurality of second fixing holes (121) in the form of long strips. The length direction of the second fixing holes (121) is consistent with the front-to-back direction of the connecting column (2). The adjusting plate (12) and the bottom plate (11) are fixedly connected by the fourth adjusting bolt (14) passing through the second fixing holes (121) and being inserted into the bottom plate (11). The locking plate (3) is placed on the adjusting plate (12), and the connecting column (2) is fixedly connected to the adjusting plate (12) via the second adjusting bolt (5).

2. A fixture for machine tools according to claim 1, characterized in that: The bottom of the locking plate (3) is a plane, the top of the base (1) has a plane, and the bottom of the locking plate (3) is in contact with the plane of the top of the base (1).

3. A fixture for machine tools according to claim 1, characterized in that: The front and rear sides of the bottom of the connecting column (2) both have first fixing holes (23) arranged obliquely inward and downward, the cross section of the first fixing hole (23) being in the shape of an elongated strip, and the length direction of the cross section of the first fixing hole (23) being arranged along the front and rear direction of the bottom of the connecting column (2), and the second adjusting bolt (5) passing through the first fixing hole (23) and being inserted into the base (1) to fix the connecting column (2) on the base (1).

4. A fixture for machine tools according to claim 3, characterized in that: The adjustment hole (211) is located at the center of the connecting portion (21), and the pair of first fixing holes (23) both pass through the connecting portion (21). The pair of first fixing holes (23) are symmetrically arranged with the adjustment hole (211) as the center.

5. The fixture for machine tools according to claim 1, characterized in that: The front and rear sides of the bottom of the connecting column (2) both have first fixing holes (23) arranged in the vertical direction, and the second adjusting bolt (5) passes through the first fixing hole (23) and is inserted into the base (1) to fix the connecting column (2) on the base (1).

6. A fixture for machine tools according to any one of claims 1 to 5, characterized in that: The mounting groove (111) is located in the middle of the bottom plate (11), and a plurality of arc-shaped third fixing holes (112) are provided at the edge of the bottom plate (11), and the third fixing holes (112) are arranged around the mounting groove (111).

7. A fixture for machine tools according to any one of claims 1 to 5, characterized in that: The locking structure (7) comprises a plurality of fifth adjusting bolts (71) and a locking hole (72) recessed at the top of the connecting column (2); the wall of the locking hole (72) comprises a plurality of dovetail grooves (73) recessed and connected to the locking hole (72); a dovetail block (74) is placed in the dovetail groove (73); the fifth adjusting bolt (71) passes through the connecting column (2) and extends into the dovetail groove (73); and the fifth adjusting bolt (71) is rotated to push the dovetail block (74) to move.

8. A fixture for machine tools according to claim 7, characterized in that: A dust shield (75) is placed on the top of the dovetail groove (73), the bottom of the dust shield (75) rests on the dovetail block (74), and the top of the dust shield (75) is flush with the top of the connecting column (2).

9. The fixture for machine tools according to claim 7, characterized in that: A locking groove (61) having an annular concave arrangement is provided on the circumferential outer side wall of the fixing column (6) for being locked by the locking structure (7), and the dovetail block (74) is embedded in the locking groove (61) and abuts against the upper and lower groove walls of the locking groove (61).

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