Centering chuck structure

Abstract

The utility model relates to the technical field of clamping structures, in particular to a centering chuck structure which comprises a first clamping piece, a second clamping piece, a third clamping piece and a fourth clamping piece, and the first clamping piece and the second clamping piece are oppositely arranged in the first direction and are respectively connected with a pushing device. The third clamping piece and the fourth clamping piece are oppositely arranged in the second direction and connected with pushing devices respectively, and the second direction is perpendicular to the first direction. Clamping in the first direction is formed through the first clamping piece and the second clamping piece, clamping in the second direction is formed through the third clamping piece and the fourth clamping piece, the pushing devices connected with the first clamping piece and the second clamping piece are used for controlling the clamping pieces to move, and a workpiece to be machined is clamped in the first direction and the second direction respectively. Clamping is achieved through different pushing control in the two directions, and accurate centering clamping can be achieved through different directions and different strokes no matter a conventional workpiece or a special-shaped workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping structures, in particular to a centering chuck structure. Background Art

[0002] With the popularization of modern automation in various industries, the awareness of reducing labor intensity and strengthening safety management is constantly improving. The clamping mechanism is a commonly used device for temporary fixing of parts in automation equipment. In order to improve the clamping accuracy of the clamping mechanism, the existing clamping mechanism generally uses customized cylinders, which are costly and difficult to manufacture. In addition, the existing clamping mechanism generally uses a set of mutually cooperating clamping parts for clamping. For the clamping of some special-shaped workpieces with high centering requirements, the existing clamping mechanism cannot flexibly meet the clamping requirements, which easily causes inconvenience or inaccuracy in later processing. Utility Model Content

[0003] The utility model provides a centering chuck structure, which is used to solve the defect that the clamping mechanism in the prior art cannot meet the requirement of accurate centering clamping of special-shaped workpieces.

[0004] The utility model provides a centering chuck structure, comprising:

[0005] A first clamping member and a second clamping member, wherein the first clamping member and the second clamping member are arranged opposite to each other along a first direction and are respectively connected to a pushing device;

[0006] The third clamping member and the fourth clamping member are arranged opposite to each other along a second direction and are respectively connected with a pushing device, and the second direction is perpendicular to the first direction.

[0007] According to a centering chuck structure provided by the utility model, the centering chuck structure also includes a flange, on which at least two groups of first brackets are arranged, on which a first sliding rod is arranged, and on which the first clamping member and the second clamping member are movably mounted; on the flange, at least two groups of second brackets are also arranged, on which a second sliding rod is arranged, and on which the third clamping member and the fourth clamping member are movably mounted.

[0008] According to a centering chuck structure provided by the utility model, a first cylindrical clamping member is respectively provided on the opposite side of the first clamping member and the second clamping member, and the first cylindrical clamping member is arranged parallel to the first clamping member or the second clamping member; a second cylindrical clamping member is respectively provided on the opposite side of the third clamping member and the fourth clamping member, and the second cylindrical clamping member is arranged parallel to the third clamping member or the fourth clamping member.

[0009] According to a centering chuck structure provided by the utility model, the corresponding ends of the first clamping member and the second clamping member are connected to the same synchronization device, and the corresponding ends of the third clamping member and the fourth clamping member are also connected to the same synchronization device.

[0010] According to a centering chuck structure provided by the utility model, the synchronization device includes a turntable and a connecting rod, the turntable is rotatably arranged, one end of the connecting rod is hinged to the turntable, and the other end is hinged to the first clamping member or the second clamping member or the third clamping member or the fourth clamping member.

[0011] According to a centering chuck structure provided by the utility model, a plurality of third brackets are arranged on the flange plate, and the third brackets include a transverse circular fixed plate and a vertical fixed plate, the turntable is an annular turntable rotatably mounted on the outer periphery of the transverse circular fixed plate, and the vertical fixed plate is connected to one end face of the transverse circular fixed plate for fixing the pushing device.

[0012] According to a centering chuck structure provided by the utility model, a plurality of fourth brackets are arranged on the flange, the fourth bracket is an annular bracket perpendicular to the flange, the turntable is an annular turntable, the turntable is movably mounted on the annular end surface of the fourth bracket and is suitable for rotating on the annular end surface of the fourth bracket, and the pushing device is installed in the annular space of the fourth bracket.

[0013] According to a centering chuck structure provided by the utility model, the connecting rod is an arc-shaped connecting rod, and the curvature of the arc-shaped connecting rod is the same as the curvature of the rotating disk.

[0014] According to a centering chuck structure provided by the utility model, the pushing device is a pushing cylinder.

[0015] According to a centering chuck structure provided by the utility model, the first clamping member and the second clamping member are located on a first plane, the third clamping member and the fourth clamping member are located on a second plane, and the second plane is parallel to the first plane.

[0016] The utility model provides a centering chuck structure, which forms clamping in a first direction through a first clamping member and a second clamping member, and forms clamping in a second direction through a third clamping member and a fourth clamping member, and the movement of each clamping member is controlled by a respectively connected pushing device to achieve separate clamping of the workpiece to be processed in the first direction and the second direction, and clamping is achieved through different pushing controls in two directions. Whether it is a conventional workpiece or a special-shaped workpiece, accurate centering clamping can be achieved through different directions and different strokes. In conjunction with the provision of a synchronization device, accurate adjustment and centering of the clamping operation can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the centering chuck structure provided by the utility model;

[0019] Figure 2 It is a schematic diagram of the top view of the centering chuck structure provided by the utility model;

[0020] Figure 3 It is a side structural schematic diagram of the centering chuck structure provided by the utility model.

[0021] Reference numerals:

[0022] 1. First clamping member; 2. Second clamping member; 3. Third clamping member; 4. Fourth clamping member; 5. Flange; 6. First bracket; 7. First slide bar; 8. Second bracket; 9. Second slide bar; 10. First columnar clamping member; 11. Second columnar clamping member; 12. Synchronizing device; 121. Turntable; 122. Connecting rod; 13. Third bracket; 131. Horizontal circular fixing disk; 132. Vertical fixing plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0025] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood in specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0028] Combine the following Figure 1 to Figure 3 The utility model is described in detail.

[0029] A specific embodiment of the utility model provides a centering chuck structure, see Figure 1 and Figure 2 As shown, it includes a first clamping member 1, a second clamping member 2, a third clamping member 3 and a fourth clamping member 4, wherein the first clamping member 1 and the second clamping member 2 are arranged opposite to each other along a first direction and are respectively connected to a pushing device; the third clamping member 3 and the fourth clamping member 4 are arranged opposite to each other along a second direction and are respectively connected to a pushing device, and the second direction is perpendicular to the first direction.

[0030] It can be understood that in this embodiment, clamping in the first direction is formed by the first clamping member 1 and the second clamping member 2, and clamping in the second direction is formed by the third clamping member 3 and the fourth clamping member 4, and the movement of each clamping member is controlled by the respectively connected pushing devices to achieve separate clamping of the workpiece to be processed in the first direction and the second direction. If the workpiece to be processed is a circular workpiece, the clamping strokes in the first direction and the second direction are consistent, so that the workpiece is accurately clamped. If it is a special-shaped workpiece, such as a square tubular workpiece, when clamping, the first direction and the second direction are clamped and pushed respectively by the pushing device, and the clamping stroke along the length direction of the square tube is smaller than the clamping stroke in the width direction, so that the square tubular workpiece can also be accurately clamped.

[0031] It should be understood that the centering chuck structure of this embodiment realizes clamping through different push controls in two directions. Whether it is a conventional workpiece or a special-shaped workpiece, precise centering clamping can be achieved through different directions and different strokes.

[0032] In some embodiments of the centering chuck structure of the present invention, the centering chuck structure further includes a flange 5, combined with Figure 2 and Figure 3 As shown, at least two groups of first brackets 6 are provided on the flange 5, a first slide bar 7 is provided on the first bracket 6, and the first clamping member 1 and the second clamping member 2 are movably mounted on the first slide bar 7; at least two groups of second brackets 8 are also provided on the flange 5, a second slide bar 9 is provided on the second bracket 8, and the third clamping member 3 and the fourth clamping member 4 are movably mounted on the second slide bar 9.

[0033] It should be understood that there is a through hole in the middle of the flange 5 for the workpiece to be processed to pass through. On the flange 5, two groups of first brackets 6 are arranged along the second direction. Each first bracket 6 includes two bracket supports distributed along the first direction. A first slide bar 7 is set on the two bracket supports. The first slide bar 7 can be inserted into the bracket supports. Of course, other connection and fixing methods are not excluded. Two parallel first slide bars 7 are formed on the two groups of first brackets 6. The first clamping member 1 and the second clamping member 2 are movably mounted on the two first slide bars 7 and can move along the first slide bars 7. The first clamping member 1 and the second clamping member 2 are respectively connected with a pushing device. The pushing device can be directly or indirectly fixed on the flange 5 to provide a driving force to the first clamping member 1 and the second clamping member 2. Through the pushing of each pushing device, the first clamping member 1 and the second clamping member 2 can be moved on the first slide bar 7 toward or away from each other, thereby achieving the clamping of the workpiece. Similarly, the movement of the third clamping member 3 and the fourth clamping member 4 is similar to the movement process of the first clamping member 1 and the second clamping member 2, except for the difference in direction. Through two sets of mobile clamping in the vertical direction, precise centering clamping of the workpiece is achieved.

[0034] In combination with the structure of the above embodiment, in other embodiments, see Figure 1 and Figure 2 As shown, a first cylindrical clamping member 10 is respectively provided on one side opposite to the first clamping member 1 and the second clamping member 2, and the first cylindrical clamping member 10 is arranged in parallel with the first clamping member 1 or the second clamping member 2; a second cylindrical clamping member 11 is respectively provided on one side opposite to the third clamping member 3 and the fourth clamping member 4, and the second cylindrical clamping member 11 is arranged in parallel with the third clamping member 3 or the fourth clamping member 4. The first cylindrical clamping member 10 and the second cylindrical clamping member 11 are components that directly contact with the workpiece, and the cylindrical structure can minimize the contact area, and the contact with the workpiece during clamping is line contact rather than surface contact, so as to avoid extrusion damage to the workpiece.

[0035] In other embodiments of the centering chuck structure of the utility model, the synchronous movement of the two clamping members in the first direction and the synchronous movement of the two clamping members in the second direction can be realized. Specifically, the corresponding ends of the first clamping member 1 and the second clamping member 2 are connected to the same synchronization device 12, and the corresponding ends of the third clamping member 3 and the fourth clamping member 4 are also connected to the same synchronization device 12. The synchronization device 12 can make the first clamping member 1 and the second clamping member 2 move, and the third clamping member 3 and the fourth clamping member 4 move, so that the clamping force on the opposite sides of the workpiece is consistent when the workpiece is clamped, and accurate centering can be achieved.

[0036] In some specific examples, the synchronization device 12 includes a turntable 121 and a connecting rod 122. The turntable 121 is rotatably arranged, one end of the connecting rod 122 is hinged to the turntable 121, and the other end is hinged to the first clamping member 1 or the second clamping member 2 or the third clamping member 3 or the fourth clamping member 4.

[0037] It can be understood that as the pushing device pushes the clamping member to move, the clamping member causes the connecting rod 122 connected thereto to move. For example, the movement of the first clamping member 1 and the second clamping member 2 is used. Figure 2As shown, the connecting rods 122 respectively connected to the first clamping member 1 and the second clamping member 2 are the same. As the first clamping member 1 and the second clamping member 2 move relative to each other, the two connecting rods 122 will move and rotate around the hinge points with the first clamping member 1 and the second clamping member 2. The other end of the connecting rod 122 is hinged to the rotating disk 121. The rotating disk 121 rotates under the drive of the same connecting rod 122. The rotation of the rotating disk 121 makes the moving angle of the connecting rod 122 on the disk the same. In this way, the first clamping member 1 and the second clamping member 2 can slide synchronously on the first slide bar 7 to clamp the workpiece. When the pushing forces of the pushing devices on both sides are different, due to the rotating disk 121 and the connecting rod 122, the displacements of the first clamping member 1 and the second clamping member 2 on the first slide bar 7 are the same, and synchronous adjustment is achieved. It should be understood that, due to the length of the first clamping member 1 and the second clamping member 2, a set of synchronization devices 12 are provided at both ends of the first clamping member 1 and the second clamping member 2, so that the first clamping member 1 and the second clamping member 2 can accurately maintain synchronization when moving. Similarly, the third clamping member 3 and the fourth clamping member 4 can also achieve synchronous movement through the two sets of synchronization devices 12 at both ends.

[0038] In the structure of the synchronization device 12, the two ends of the connecting rod 122 are respectively hinged to the clamping member and the rotating disk 121. In some examples, the connecting rod 122 is an arc-shaped connecting rod, and the arc of the arc-shaped connecting rod is the same as the arc of the rotating disk 121. The arc-shaped connecting rod can better realize the rotational articulation, so that the connecting rod 122 and the rotating disk 121 maintain the consistency of rotation within a small range, and can also increase the appearance.

[0039] There are many ways to fix the synchronization device 12. In some embodiments of the centering chuck structure of the present invention, the synchronization device 12 can be fixed in a plurality of ways. Figure 1 and Figure 3 As shown, a plurality of third brackets 13 are arranged on the flange 5, and the third bracket 13 includes a transverse circular fixed disk 131 and a vertical fixed plate 132. The turntable 121 is an annular turntable rotatably mounted on the outer periphery of the transverse circular fixed disk 131, and the vertical fixed plate 132 is connected to one end face of the transverse circular fixed disk 131 for fixing the pushing device.

[0040] It can be understood that in the centering chuck structure of the present invention, the first clamping member 1 and the second clamping member 2 are located on a first plane, the third clamping member 3 and the fourth clamping member 4 are located on a second plane, and the second plane is parallel to the first plane. Figure 1 As shown, the first plane where the first clamping member 1 and the second clamping member 2 are located is located above the second plane where the third clamping member 3 and the fourth clamping member 4 are located in the vertical direction. The third bracket 13 is divided into two installation modes, see Figure 1As shown, one is that the vertical fixing plate 132 is fixed to the flange 5, and the horizontal circular fixing plate 131 is fixed on the vertical fixing plate 132, wherein the vertical fixing plate 132 is used to fix the pushing device of the third clamping member 3 and the fourth clamping member 4, and the horizontal circular fixing plate 131 is used to install the synchronization device 12 connecting the first clamping member 1 and the second clamping member 2; the other is that the horizontal circular fixing plate 131 fixes the flange 5, as shown Figure 3 As shown, the vertical fixing plate 132 is fixed on the transverse circular fixing plate 131, wherein the vertical fixing plate 132 is used to fix the pushing device of the first clamping member 1 and the second clamping member 2, and the transverse circular fixing plate 131 is used to install the synchronization device 12 connecting the third clamping member 3 and the fourth clamping member 4.

[0041] In other embodiments of the centering chuck structure of the utility model, a plurality of fourth brackets are provided on the flange 5, which are not shown in the figure. The fourth bracket is an annular bracket perpendicular to the flange 5, and the turntable 121 is an annular turntable. The turntable 121 is movably mounted on the annular end face of the fourth bracket and is suitable for rotating on the annular end face of the fourth bracket. The pushing device is installed in the annular space of the fourth bracket. In this embodiment, the fourth bracket is installed in the same manner, but the height is different. The height of the annular space of the fourth bracket needs to be determined according to the height of the pushing device. The fourth bracket is vertically fixed on the flange 5, and the turntable 121 is mounted on the end face of the fourth bracket and can be rotated on the end face, which is used for synchronous adjustment of the clamping parts. The annular space of the fourth bracket is used to fix the pushing device.

[0042] In the above-mentioned embodiments, the movement of the first clamping member 1, the second clamping member 2, the third clamping member 3 and the fourth clamping member 4 is carried out by a pushing device, which can be in the form of a hydraulic cylinder, an electric push rod or a pneumatic cylinder. In some specific embodiments, the pushing device is a pushing cylinder, which can be set as a two-stage cylinder of ordinary structure. The clamping member clamps the workpiece through the positive air intake of the cylinder, and the clamping member releases the workpiece through the reverse air intake of the cylinder.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A centering chuck structure, characterized in that: include: A first clamping member (1) and a second clamping member (2), wherein the first clamping member (1) and the second clamping member (2) are arranged opposite to each other along a first direction and are respectively connected to a pushing device; A third clamping member (3) and a fourth clamping member (4), wherein the third clamping member (3) and the fourth clamping member (4) are arranged opposite to each other along a second direction and are respectively connected to a pushing device, and the second direction is perpendicular to the first direction; The corresponding ends of the first clamping member (1) and the second clamping member (2) are connected to the same synchronization device (12), and the corresponding ends of the third clamping member (3) and the fourth clamping member (4) are also connected to the same synchronization device (12); The synchronizing device (12) comprises a rotating disk (121) and a connecting rod (122); the rotating disk (121) is rotatably arranged; one end of the connecting rod (122) is hinged to the rotating disk (121), and the other end is hinged to the first clamping member (1) or the second clamping member (2) or the third clamping member (3) or the fourth clamping member (4).

2. The centering chuck structure according to claim 1, characterized in that: The centering chuck structure also includes a flange (5), on which at least two groups of first brackets (6) are arranged, on which a first slide bar (7) is arranged, and on which the first bracket (6) is movably mounted. The first clamping member (1) and the second clamping member (2) are movably mounted on the first slide bar (7); and at least two groups of second brackets (8) are also arranged on the flange (5), on which a second slide bar (9) is arranged, and on which the third clamping member (3) and the fourth clamping member (4) are movably mounted.

3. The centering chuck structure according to claim 2, characterized in that: A first columnar clamping member (10) is provided on one side opposite to the first clamping member (1) and the second clamping member (2), and the first columnar clamping member (10) is arranged in parallel with the first clamping member (1) or the second clamping member (2); a second columnar clamping member (11) is provided on one side opposite to the third clamping member (3) and the fourth clamping member (4), and the second columnar clamping member (11) is arranged in parallel with the third clamping member (3) or the fourth clamping member (4).

4. The centering chuck structure according to claim 2 or 3, characterized in that: A plurality of third brackets (13) are arranged on the flange (5), and the third brackets (13) include a transverse circular fixing disk (131) and a vertical fixing plate (132). The turntable (121) is an annular turntable rotatably mounted on the outer periphery of the transverse circular fixing disk (131). The vertical fixing plate (132) is connected to one end surface of the transverse circular fixing disk (131) and is used to fix the pushing device.

5. The centering chuck structure according to claim 2 or 3, characterized in that: A plurality of fourth brackets are arranged on the flange (5), the fourth bracket is an annular bracket perpendicular to the flange (5), the turntable (121) is an annular turntable, the turntable (121) is movably mounted on the annular end surface of the fourth bracket and is suitable for rotating on the annular end surface of the fourth bracket, and the pushing device is installed in the annular space of the fourth bracket.

6. The centering chuck structure according to claim 1, characterized in that: The connecting rod (122) is an arc-shaped connecting rod, and the curvature of the arc-shaped connecting rod is the same as the curvature of the rotating disk (121).

7. The centering chuck structure according to any one of claims 1 to 3, characterized in that: The pushing device is a pushing cylinder.

8. The centering chuck structure according to any one of claims 1 to 3, characterized in that: The first clamping member (1) and the second clamping member (2) are located on a first plane, the third clamping member (3) and the fourth clamping member (4) are located on a second plane, and the second plane is parallel to the first plane.

Images