Two-claw type center frame

Abstract

The utility model relates to the technical field of center frames, in particular to a two-claw type center frame which comprises a frame body, a first claw body and a second claw body, the first claw body and the second claw body slide on the frame body in the same direction, and the first claw body and the second claw body slide relatively in the first direction to clamp or support a workpiece. The first claw body is rotationally connected with a plurality of first rolling pieces, the second claw body is rotationally connected with a plurality of second rolling pieces so as to support the workpiece in a rolling mode, the workpiece can be clamped or supported through relative sliding of the first claw body and the second claw body, the gravity of the workpiece can be dispersed and balanced through the first claw body and the second claw body, and therefore the workpiece can be clamped or supported. The problems that due to the fact that the weight of the workpiece is too large, clamping is difficult, moving is inconvenient, and even position deviation is caused are effectively avoided, an operator can move and adjust the position of the large-weight workpiece more easily, and therefore labor intensity is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of center frame, especially two claw formula center frame. BACKGROUND

[0002] In the field of precision machining, the machine tool center frame plays a crucial role. The center frame is not only the core component of supporting and fixing the workpiece. However, with the development of modern industry, the size, weight and complexity of the workpiece are increasing, and the performance of the machine tool center frame cannot meet the existing machining requirements.

[0003] The workpiece with large weight needs to consume a lot of time and manpower when moving and adjusting position, which not only reduces the production efficiency, but also increases the labor intensity of the operator. At the same time, due to the large weight of the workpiece, it is easy to cause damage to the workpiece or the machine tool during the moving process. SUMMARY

[0004] The utility model aims at providing a two claw formula center frame to solve the problem of large weight workpiece difficult to move and position adjustment in the machining process in the prior art.

[0005] The technical scheme of the utility model is: a two claw formula center frame, comprising: a frame body, a first claw body and a second claw body, the first claw body and the second claw body slide in the same direction in the frame body, the first claw body and the second claw body slide in the first direction to clamp or support the workpiece, the first claw body is rotationally connected with a plurality of first rolling elements, and the second claw body is rotationally connected with a plurality of second rolling elements to roll and support the workpiece.

[0006] Preferably, the first claw body is provided with a first mounting side towards the second claw body, a plurality of first rolling elements are rotationally connected to the first mounting side, and a plurality of first rolling elements partially protrude from the first mounting side. The second claw body is provided with a second mounting side towards the first claw body, a plurality of second rolling elements are rotationally connected to the second mounting side, and a plurality of second rolling elements partially protrude from the second mounting side.

[0007] Preferably, the first mounting side is inclined, the first rolling elements are linearly arrayed along the inclined direction of the first mounting side, the second mounting side is inclined, the second rolling elements are linearly arrayed along the inclined direction of the second mounting side, and the inclined direction of the first mounting side is opposite to the inclined direction of the second mounting side.

[0008] Preferably, the first mounting side is provided in a circular arc, the first rolling elements are distributed in a circular arc along the first mounting side, the second mounting side is provided in a circular arc, the second rolling elements are distributed in a circular arc along the second mounting side, and the first mounting side and the second mounting side have the same curvature.

[0009] Preferably, the first installation side is provided with a plurality of first installation grooves, the second installation side is provided with a plurality of second installation grooves, the first rolling member is detachably installed in the second installation groove, and the second rolling member is detachably installed in the second installation groove.

[0010] Preferably, the first rolling member and the second rolling member are bearing rollers.

[0011] Preferably, the frame body is provided with a sliding channel, the first claw body protrudes into the sliding channel and is provided with a first limiting block, the second claw body protrudes into the sliding channel and is provided with a second limiting block, and the side walls of the first limiting block and the second limiting block abut against the side walls of the sliding channel.

[0012] Preferably, the sliding channel is fixedly connected with a first driving member and a second driving member, the output ends of the first driving member and the second driving member are oppositely arranged, the output end of the first driving member is connected with the first claw body, and the output end of the second driving member is fixedly connected with the second claw body.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) the first claw body and the second claw body can be relatively slid to clamp or support the workpiece, the first claw body and the second claw body can disperse and balance the gravity of the workpiece, effectively avoid the difficulty in clamping, inconvenience in moving and even position deviation caused by the excessive weight of the workpiece, and the operator can more easily move and adjust the position of the heavy workpiece, thereby reducing the labor intensity.

[0015] (2) the inclination of the first installation side and the second installation side makes the first rolling member and the second rolling member form a more stable support structure when contacting the workpiece, further disperses the gravity of the workpiece, reduces the single-point stress, and thereby enhances the support stability of the heavy workpiece.

[0016] (3) the sliding channel provides clear guidance for the movement of the first claw body and the second claw body, the first limiting block and the second limiting block slide relative to the side walls of the sliding channel, and the linearity and stability of the claw body in the movement process are ensured, and the workpiece can maintain good position accuracy in the machining process. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings and embodiments:

[0018] Figure 1 It is a structure schematic view of two claw type center frame of the utility model;

[0019] Figure 2The structural schematic view of the first claw body;

[0020] Figure 3 The structural schematic view of the second claw body;

[0021] Figure 4 The explosion structural schematic view of the two-claw type center frame.

[0022] Explanation of the reference signs:

[0023] 1, frame body; 11, slide; 2, first claw body; 21, first mounting side; 22, first mounting groove; 23, first limiting block; 24, first clamping groove; 3, second claw body; 31, second mounting side; 32, second mounting groove; 33, second limiting block; 34, second clamping groove; 4, first rolling element; 41, first roller; 42, first supporting rod; 43, first limiting wheel; 5, second rolling element; 51, second roller; 52, second supporting rod; 53, second limiting wheel; 6, first driving element; 7, second driving element. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will combine the specific embodiments of the present application and the corresponding drawings to make a clear and complete description of the technical scheme of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0025] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0027] As shown in the figure, a two-jaw centering jig comprises a jig body 1, a first jaw body 2 and a second jaw body 3, the first jaw body 2 and the second jaw body 3 slide in the same direction on the jig body 1, the first jaw body 2 and the second jaw body 3 cooperate to clamp or support a workpiece, clamp and position the workpiece, ensure that the machined workpiece has high coaxiality and radial runout, and ensure machining precision and workpiece quality. The first jaw body 2 is rotationally connected with a plurality of first rolling members 4, the second jaw body 3 is rotationally connected with a plurality of second rolling members 5, and the first rolling members 4 and the second rolling members 5 are in rolling abutment with the workpiece, so that the workpiece can rotate around the axis when the first jaw and the second jaw support or clamp the workpiece.

[0028] Specifically, the first jaw body 2 is provided with a first mounting side 21, the first mounting side 21 is arranged towards the second jaw body 3, in this embodiment, the first mounting side 21 is arranged obliquely, specifically, the first mounting side 21 is inclined towards the direction away from the second jaw body 3, and the first mounting side 21 is an inclined plane. A plurality of first rolling members 4 are rotationally connected to the first mounting side 21, the first rolling members 4 are arrayed along the inclined direction of the first mounting side 21, and the first rolling members 4 are arranged to protrude obliquely upwards from the first mounting side 21 to support the workpiece. Preferably, the first rolling members 4 are two, and the rotation axes of the two first rolling members 4 are parallel.

[0029] The second jaw body 3 is provided with a second mounting side 31, the second mounting side 31 is located on the side of the second jaw body 3 facing the first jaw body 2, the second mounting side 31 is arranged obliquely, specifically, the second mounting side 31 is inclined towards the direction away from the first jaw body 2, and the second mounting side 31 is an inclined plane, and the first mounting side 21 and the second mounting side 31 form an open support structure. A plurality of second rolling members 5 are rotationally connected to the second mounting side 31, the second rolling members 5 are arrayed along the inclined direction of the second mounting side 31, and the second rolling members 5 are arranged to protrude obliquely upwards from the second mounting side 31 to support the workpiece. The first jaw body 2 cooperates with the second jaw body 3 to support and position the workpiece, and is suitable for heavy workpieces, and the first jaw body 2 and the second jaw body 3 provide stable support.

[0030] In other embodiments, the first mounting side 21 is inclined towards the second jaw body 3, and the second mounting side 31 is arranged obliquely towards the first jaw body 2, that is, the first jaw body 2 and the second jaw body 3 enclose a space for clamping the workpiece to clamp and position the outer circumferential side of the workpiece, which is suitable for small workpieces, and clamps the workpiece to reduce the shaking of the workpiece during movement and improve the stability of the workpiece during machining.

[0031] The first installation side 21 is provided with a plurality of first installation grooves 22, and the first rolling member 4 is detachably installed in the first installation groove 22. Specifically, the first rolling member 4 includes a first roller 41, two first supporting rods 42, and two first limiting wheels 43. The two first supporting rods 42 are respectively fixed to two ends of the first roller 41. The rotation central axis of the first supporting rod 42 is coaxial with the rotation central axis of the first supporting rod 42. The cross sections of the first supporting rod 42 and the first roller 41 are circular. The diameter of the first supporting rod 42 is smaller than the diameter of the first roller 41. The other end of the first supporting rod 42 is fixedly connected with the first limiting wheel 43. The diameter of the first limiting wheel 43 is greater than the diameter of the first supporting rod 42.

[0032] The side wall of the first claw body 2 is provided with a plurality of first clamping grooves 24 which are in communication with the first installation grooves 22. The first clamping grooves 24 are two groups. The two groups of clamping grooves are distributed on the two sides of the first installation grooves 22. The first clamping grooves 24 on the two sides correspond to each other. The bottom inner wall of the first clamping groove 24 is arc-shaped to support the first supporting rod 42, and the first supporting rod 42 can rotate. More specifically, the opening of the first clamping groove 24 is connected with the first installation groove 22. Preferably, the longitudinal direction of the first clamping groove 24 is perpendicular to the first installation side 21 to reduce the risk of the first supporting rod 42 being separated.

[0033] During installation, the first supporting rod 42 is placed in the corresponding first clamping groove 24. The first roller 41 is partially rotated in the first installation groove 22. The first limiting wheel 43 abuts against the side wall of the first claw body 2. The two first limiting wheels 43 prevent the first roller 41 from sliding relative to the first claw body 2, thereby avoiding friction between the first roller 41 and the workpiece and wear on the outer surface of the workpiece.

[0034] The side wall of the second claw body 3 is provided with a plurality of second clamping grooves 34 which are in communication with the second installation grooves 32. The second clamping grooves 34 are two groups. The two groups of second clamping grooves 34 are distributed on the two sides of the second installation grooves 32. The second clamping grooves 34 on the two sides correspond to each other. The bottom inner wall of the second clamping groove 34 is arc-shaped to support the second supporting rod 52, and the second supporting rod 52 can rotate. More specifically, the opening of the second clamping groove 34 is connected with the second installation groove 32. Preferably, the longitudinal direction of the second clamping groove 34 is perpendicular to the second installation side 31 to reduce the risk of the second supporting rod 52 being separated. The second supporting rod 52 is placed in the corresponding second clamping groove 34. The second roller 51 is partially rotated in the second installation groove 32. The second limiting wheel 53 abuts against the side wall of the second claw body 3. The two second limiting wheels 53 prevent the second roller 51 from sliding relative to the second claw body 3, thereby avoiding friction between the second roller 51 and the workpiece and wear on the outer surface of the workpiece.

[0035] In other changed embodiments, the first mounting side 21 is arranged in an arc, the first rolling members 4 are uniformly distributed along the arc track of the first mounting side 21, the second mounting side 31 is arranged in an arc, the second rolling members 5 are uniformly distributed along the arc track of the second mounting side 31, the arc of the first mounting side 21 is the same as that of the second mounting side 31, and the first rolling members 4 and the second rolling members 5 are arranged in multiple to increase the support point positions of the workpiece and improve the stability during support.

[0036] The frame body 1 is provided with a slide 11, the opening of the slide 11 is upward, the bottom of the first claw body 2 protrudes a first limiting block 23, the side wall of the first limiting block 23 abuts against the side wall of the slide 11, so that the first claw body 2 can slide along the length direction of the slide 11, one end of the slide 11 is built-in with a first driving member 6, the first driving member 6 is fixed to the bottom of the slide 11, the output end of the first driving member 6 is fixedly connected with the bottom of the first claw body 2, and the output end of the first driving member 6 moves along the length direction of the slide 11 to drive the first claw body 2 to move along the length direction of the slide 11.

[0037] The bottom of the second claw body 3 protrudes a second limiting block 33, the side wall of the second limiting block 33 abuts against the side wall of the slide 11, so that the second claw body 3 can slide along the length direction of the slide 11, one end of the slide 11 is built-in with a second driving member 7, the second driving member 7 is fixed to the bottom of the slide 11, the output end of the second driving member 7 is fixedly connected with the bottom of the second claw body 3, and the output end of the second driving member 7 moves along the length direction of the slide 11 to drive the second claw body 3 to move along the length direction of the slide 11. The first driving member 6 cooperates with the second driving member 7 to control the first claw member and the second claw member to have multiple states, when the first claw member is close to the second claw member or the first claw member is away from the second claw member, the height of the workpiece can be adjusted, and when the first claw member and the second claw member move simultaneously, the workpiece can be smoothly moved along the length direction of the slide 11.

[0038] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A two-claw type center frame, characterized in that, include: The frame (1), the first claw (2) and the second claw (3) slide in the same direction on the frame (1). The first claw (2) and the second claw (3) slide relative to each other in a first direction to clamp or support the workpiece. The first claw (2) is rotatably connected to a plurality of first rolling elements (4), and the second claw (3) is rotatably connected to a plurality of second rolling elements (5) to support the workpiece.

2. A two-claw type center frame according to claim 1, characterized in that: The first claw body (2) is provided with a first mounting side (21) facing the second claw body (3), and a plurality of first rolling elements (4) are rotatably connected to the first mounting side (21). A plurality of first rolling elements (4) partially protrude from the first mounting side (21). The second claw body (3) is provided with a second mounting side (31) facing the first claw body (2), and a plurality of second rolling elements (5) are rotatably connected to the second mounting side (31). A plurality of second rolling elements (5) partially protrude from the second mounting side (31).

3. A two-claw type center frame according to claim 2, characterized in that: The first mounting side (21) is inclined, the first rolling element (4) is linearly arrayed along the inclined direction of the first mounting side (21), the second mounting side (31) is inclined, the second rolling element (5) is linearly arrayed along the inclined direction of the second mounting side (31), and the inclined direction of the first mounting side (21) is opposite to the inclined direction of the second mounting side (31).

4. A two-claw type center frame according to claim 2, characterized in that: The first mounting side (21) is arc-shaped, the first rolling element (4) is arc-shaped along the first mounting side (21), the second mounting side (31) is arc-shaped, the second rolling element (5) is arc-shaped along the second mounting side (31), and the first mounting side (21) and the second mounting side (31) have the same curvature.

5. A two-claw type center frame according to claim 3, characterized in that: The first mounting side (21) has a plurality of first mounting slots (22), and the second mounting side (31) has a plurality of second mounting slots (32). The first rolling element (4) is detachably mounted in the second mounting slot (32), and the second rolling element (5) is detachably mounted in the second mounting slot (32).

6. A two-claw type center frame according to claim 1, characterized in that: Both the first rolling element (4) and the second rolling element (5) are bearing rollers.

7. A two-claw type center frame according to claim 1, characterized in that: The frame (1) is provided with a slide (11), the first claw (2) protrudes into the slide (11) with a first limiting block (23), the second claw (3) protrudes into the slide (11) with a second limiting block (33), and the side walls of the first limiting block (23) and the second limiting block (33) abut against the side wall of the slide (11).

8. A two-claw type center frame according to claim 7, characterized in that: The slide (11) is fixedly connected to a first drive member (6) and a second drive member (7). The output ends of the first drive member (6) and the second drive member (7) are arranged opposite to each other. The output end of the first drive member (6) is connected to the first claw body (2), and the output end of the second drive member (7) is fixedly connected to the second claw body (3).

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