Anti-retreating clamp and machine tool

Abstract

The utility model provides an anti-retreating clamp and a machine tool, the anti-retreating clamp comprises an elastic clamping block and an elastic abutting assembly, and the elastic clamping block is provided with an assembly hole; and the elastic abutting assembly is in sliding connection with the elastic clamping block, the elastic abutting assembly can stretch out and draw back relative to the elastic clamping block, the elastic abutting assembly stretches into the assembling hole and is used for elastically abutting against the end face of the workpiece, and the inner wall of the assembling hole is used for elastically abutting against the peripheral face of the workpiece. By arranging the elastic abutting assembly, the elastic abutting assembly elastically abuts against the end face of the workpiece, the inner wall of the assembly hole elastically abuts against the peripheral face of the workpiece, the workpiece can be fully clamped, and therefore the risk that the workpiece retreats and moves in the machining process is reduced, meanwhile, the elastic abutting assembly is arranged to be in sliding connection with the elastic clamping block, and therefore the workpiece can be clamped more stably. The elastic abutting assembly can stretch out and draw back relative to the elastic clamping block, when hard collision occurs, the elastic abutting assembly can stretch out and draw back relative to the elastic clamping block, and therefore the risk of machine collision is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an anti-retraction clamp and a machine tool. Background Art

[0002] A fixture refers to a device used to fix workpieces during the mechanical manufacturing process and is widely used on machine tools.

[0003] In the related art, the existing fixture installs the workpiece by step-type positioning or rear-suspended clamping. In this fixing method, the contact between the fixture and the workpiece is insufficient, the workpiece is easy to retreat and move during the processing, and it is easy to collide with the machine. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an anti-recoil fixture and a machine tool, which can reduce the risk of workpieces retreating and colliding with the machine during processing.

[0005] In the first aspect, an embodiment of the utility model provides an anti-retraction clamp, which includes an elastic clamping block and an elastic abutting component, the elastic clamping block is provided with an assembly hole; the elastic abutting component is slidably connected to the elastic clamping block, the elastic abutting component can be extended and retracted relative to the elastic clamping block, the elastic abutting component extends into the assembly hole, the elastic abutting component is used to elastically abut against the end face of the workpiece, and the inner wall of the assembly hole is used to elastically abut against the outer peripheral surface of the workpiece.

[0006] The anti-retraction clamp provided by the first embodiment of the utility model has at least the following beneficial effects:

[0007] By setting up an elastic abutment component, the elastic abutment component elastically abuts against the end face of the workpiece, and the inner wall of the assembly hole elastically abuts against the outer peripheral surface of the workpiece, the workpiece can be fully clamped, thereby reducing the risk of the workpiece retreating and moving during processing. At the same time, the elastic abutment component is set to be slidably connected to the elastic clamping block, and the elastic abutment component can be extended and retracted relative to the elastic clamping block. When a hard collision occurs, the elastic abutment component can shrink relative to the elastic clamping block, thereby reducing the risk of collision.

[0008] In an embodiment of this implementation, the anti-retraction clamp includes a guide sleeve, the elastic clamping block is provided with a mounting hole, the mounting hole is connected to the assembly hole, the guide sleeve is installed in the mounting hole, and the elastic supporting component is slidably connected to the guide sleeve.

[0009] In an embodiment of this implementation, the elastic supporting assembly includes an elastic member and a push rod, the guide sleeve is provided with a guide hole, the push rod is slidably engaged with the guide hole, one end of the elastic member is connected to the push rod, and the other end of the elastic member is connected to the guide sleeve.

[0010] In an embodiment of this implementation, the inner wall of the mounting hole is provided with a relatively protruding first boss, the assembly hole is opened on the first boss, the push rod is provided with a second boss, the second boss abuts against the elastic member, and the side of the second boss facing away from the elastic member abuts against the first boss.

[0011] In an example of this implementation, the guide sleeve is threadedly connected to the mounting hole, and the guide sleeve can rotate relative to the elastic clamping block to move in the mounting hole to adjust the compression degree of the elastic member.

[0012] In an example of this implementation manner, an adjustment groove is formed on the end surface of the guide sleeve facing away from the elastic member.

[0013] In an example of this implementation, the anti-retraction clamp includes a locking piece, which is passed through the elastic clamping block and connected to the external thread of the guide sleeve to limit the relative position of the elastic clamping block and the guide sleeve.

[0014] In an example of this implementation manner, the push rod and the assembly hole are clearance-fitted.

[0015] In an example of this implementation manner, a plurality of deformation grooves are provided on the outer circumference of the elastic clamping block, the plurality of deformation grooves are distributed in an array along the circumference of the elastic clamping block, and the deformation grooves extend along the axial direction of the assembly hole.

[0016] In the second aspect, an embodiment of the utility model provides a machine tool, which includes a machine tool body, a processing device and the anti-retreat clamp described in any one of the embodiments of the first aspect of the utility model, wherein the anti-retreat clamp and the processing device are both arranged on the machine tool body, the anti-retreat clamp is used to install a workpiece, and the processing device is used to process the end face of the elastic supporting component of the workpiece facing away from the anti-retreat clamp.

[0017] The machine tool provided by the second embodiment of the utility model has at least the following beneficial effects:

[0018] By adding the anti-retraction clamp provided by the embodiment of the utility model to the machine tool, the risk of the workpiece retreating and moving during the processing and the risk of the machine collision can be reduced.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 is a schematic cross-sectional structural diagram of the anti-retraction clamp provided in this embodiment;

[0022] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure of an anti-retraction fixture when a workpiece is installed;

[0023] Figure 3 yes Figure 1 A schematic cross-sectional view of the elastic clamping block;

[0024] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the elastic clamping block;

[0025] Figure 5 yes Figure 1 Schematic diagram of the structure of the guide sleeve.

[0026] Reference numerals:

[0027] Anti-retraction clamp 100; workpiece 200; elastic clamping block 10; assembly hole 101; mounting hole 102; locking hole 103; deformation groove 104; positioning mounting groove 105; first boss 11; elastic abutment assembly 20; elastic member 21; push rod 22; second boss 221; guide sleeve 30; guide hole 301; adjustment groove 302; locking member 40; plug screw 50. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, 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 present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] In the related art, the existing fixture installs the workpiece by step-type positioning or rear-suspended clamping. The contact area between the fixture and the workpiece is small, and the workpiece is prone to retreat and movement during the processing. For example, when turning the end face of the workpiece, the area of ​​the workpiece clamped by the fixture is too small, and the workpiece is prone to retreat and movement under the action of the turning force, making it impossible to carry out subsequent processing. This situation is particularly prone to occur in the processing of metal sheets. Since the metal sheet itself has a relatively small area and a relatively small weight, the risk of retreat and movement is also higher. At the same time, after the existing fixture installs the workpiece, there is no room for the relative position of the workpiece and the fixture to change, which makes it easy for the machine to collide.

[0034] See also Figures 1 to 3 , Figure 1 is a schematic cross-sectional structural diagram of the anti-retraction clamp 100 provided in this embodiment, Figure 2 yes Figure 1 A schematic cross-sectional view of the anti-retraction fixture 100 when the workpiece 200 is installed, Figure 3 yes Figure 1A schematic diagram of the cross-sectional structure of the elastic clamping block 10. An embodiment of the utility model provides an anti-recoil clamp 100, which is used to install a workpiece 200 so that the workpiece 200 can be subjected to mechanical processing such as turning, grinding, and drilling. The anti-recoil clamp 100 includes an elastic clamping block 10 and an elastic abutting component 20, and the elastic clamping block 10 is provided with an assembly hole 101. The elastic abutting component 20 is slidably connected to the elastic clamping block 10, and the elastic abutting component 20 can be extended and retracted relative to the elastic clamping block 10. The elastic abutting component 20 extends into the assembly hole 101, and the elastic abutting component 20 is used to elastically abut against the end face of the workpiece 200. The inner wall of the assembly hole 101 is used to elastically abut against the outer peripheral surface of the workpiece 200.

[0035] Specifically, the elastic abutting component 20 can be slidably connected to the elastic clamping block 10 by means of a slide groove and a slide rail. The telescopic direction of the elastic abutting component 20 relative to the elastic clamping block 10 is the same as the axial direction of the assembly hole 101. In this embodiment, the workpiece 200 is a metal sheet, and the workpiece 200 has two end faces facing each other and an outer peripheral surface connecting the two end faces. One of the end faces of the workpiece 200 is elastically abutted against the elastic abutting component 20, and the other end face of the workpiece 200 is a processing surface for processing by a tool.

[0036] In this embodiment, when the workpiece 200 is not installed, the elastic abutment component 20 is flush with the end surface of the elastic clamping block 10 located at the opening of the assembly hole 101. When the workpiece 200 is installed, the workpiece 200 overcomes the elastic force of the elastic abutment component 20 to be placed in the assembly hole 101, and the end surface of the workpiece 200 facing away from the elastic abutment component 20 is flush with the end surface of the elastic clamping block 10 located at the opening of the assembly hole 101. At this time, the elastic force of the elastic abutment component 20 on the workpiece 200 is balanced with the static friction force of the elastic clamping block 10 on the workpiece 200, and the workpiece 200 can be stationary in the assembly hole 101. The elastic force of the elastic abutment component 20 on the workpiece 200 is configured to be greater than the processing force on the workpiece 200 during processing, so as to reduce the risk of the workpiece 200 retreating.

[0037] By setting up an elastic abutment component 20, the elastic abutment component 20 and the end face of the workpiece 200 are elastically abutted, and the inner wall of the assembly hole 101 and the outer peripheral surface of the workpiece 200 are elastically abutted, so that the workpiece 200 can be fully clamped, thereby reducing the risk of the workpiece 200 retreating and moving during the processing. At the same time, the elastic abutment component 20 is set to be slidably connected with the elastic clamping block 10, and the elastic abutment component 20 can be extended and retracted relative to the elastic clamping block 10. When a hard collision occurs, the elastic abutment component 20 can shrink relative to the elastic clamping block 10, thereby reducing the risk of collision.

[0038] In one embodiment of this implementation, please refer to Figure 1 and Figure 2The anti-retraction clamp 100 includes a guide sleeve 30. The elastic clamping block 10 is provided with a mounting hole 102, the mounting hole 102 is connected to the assembly hole 101, the guide sleeve 30 is installed in the mounting hole 102, and the elastic abutting component 20 is slidably connected to the guide sleeve 30. Specifically, the mounting hole 102 and the assembly hole 101 are connected in the axial direction and are coaxially arranged. By providing the guide sleeve 30, the elastic abutting component 20 can slide relative to the elastic clamping block 10 through the guide sleeve 30 to achieve relative telescopic movement.

[0039] In this embodiment, the rigidity of the guide sleeve 30 is greater than that of the elastic clamping block 10, so that the guide sleeve 30 can more accurately guide the elastic abutting assembly 20. Specifically, the guide sleeve 30 is made of Cr12, the elastic clamping block 10 is made of 65Mn, the elastic clamping block 10 has a suitable rigidity to elastically abut the workpiece 200, and the guide sleeve 30 has a suitable rigidity to guide the elastic abutting assembly 20.

[0040] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 The elastic supporting assembly 20 includes an elastic member 21 and a push rod 22. The guide sleeve 30 is provided with a guide hole 301, and the push rod 22 is slidably matched with the guide hole 301. One end of the elastic member 21 is connected to the push rod 22, and the other end of the elastic member 21 is connected to the guide sleeve 30. Specifically, the elastic member 21 is connected to the end face of the push rod 22 facing the assembly hole 101, and the elastic member 21 is sleeved on the outer periphery of the push rod 22. By providing the elastic member 21 and the push rod 22, the push rod 22 is slidably matched with the guide hole 301, and the push rod 22 can move relative to the guide sleeve 30. At the same time, the elastic member 21 can provide elastic force for the push rod 22 to help the push rod 22 to elastically support the end face of the workpiece 200.

[0041] In one embodiment of this implementation, please refer to Figures 1 to 3 , the inner wall of the mounting hole 102 is provided with a relatively protruding first boss 11, and the assembly hole 101 is opened on the first boss 11. The push rod 22 is provided with a second boss 221, and the second boss 221 abuts against the elastic member 21. The side of the second boss 221 facing away from the elastic member 21 abuts against the first boss 11. Specifically, the end of the elastic member 21 facing away from the guide sleeve 30 abuts against the second boss 221. The second boss 221 protrudes relative to the outer peripheral surface of the push rod 22 and is a convex ring. With such a configuration, the first boss 11 can limit the push rod 22 through the second boss 221, so that the elastic member 21 can maintain a compressed state.

[0042] In one embodiment of this implementation, please refer to Figures 1 to 3, the guide sleeve 30 and the mounting hole 102 are threadedly connected, and the guide sleeve 30 can rotate relative to the elastic clamping block 10 to move in the mounting hole 102 to adjust the compression degree of the elastic member 21. It can be understood that the two ends of the elastic member 21 are respectively connected to the guide sleeve 30 and the push rod 22, and the elastic member 21 is in a compressed state. By setting the guide sleeve 30 and the mounting hole 102 to be threadedly connected, it is convenient to adjust the depth of the guide sleeve 30 in the mounting hole 102, thereby adjusting the compression degree of the elastic member 21. In this way, the compression degree of the elastic member 21 can be changed by the guide sleeve 30, which is conducive to improving the applicability of the anti-retraction clamp 100.

[0043] In one embodiment of this implementation, please refer to Figure 1 and Figure 5 , Figure 5 yes Figure 1 Schematic diagram of the structure of the guide sleeve 30. The end surface of the guide sleeve 30 facing away from the elastic member 21 is provided with an adjustment groove 302. In this way, the guide sleeve 30 can be driven to rotate in the mounting hole 102 by the cooperation of the tool and the adjustment groove 302, so as to adjust the depth of the guide sleeve 30 in the mounting hole 102.

[0044] In this embodiment, the number of the adjustment grooves 302 is four, and the four adjustment grooves 302 are arranged in a circumferential array on the end surface of the guide sleeve 30 facing away from the elastic member 21, so as to be driven to rotate by a cross screwdriver.

[0045] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 The anti-retraction clamp 100 includes a locking member 40. The locking member 40 is inserted into the elastic clamping block 10 and connected with the external thread of the guide sleeve 30 to limit the relative position of the elastic clamping block 10 and the guide sleeve 30. Specifically, the elastic clamping block 10 is provided with a locking hole 103, which extends radially and is connected with the mounting hole 102, and the locking member 40 is threadedly engaged with the locking hole 103. The locking member 40 can be rotated relative to the elastic clamping block 10 to move relative to the elastic clamping block 10, so that the locking member 40 can extend into the mounting hole 102 and engage with the external thread of the guide sleeve 30, so that the guide sleeve 30 cannot move relative to the elastic clamping block 10, thereby limiting the relative position of the elastic clamping block 10 and the guide sleeve 30. With such a configuration, the guide sleeve 30 and the elastic clamping block 10 are not prone to loosening.

[0046] In this embodiment, the number of the locking members 40 is three, and the three locking members 40 clamp the guide sleeve 30 from different angles to better limit the relative position of the guide sleeve 30 and the elastic supporting block.

[0047] In one embodiment of this implementation, please refer to Figure 1 and Figure 2The push rod 22 and the assembly hole 101 are clearance-fitted, so that the push rod 22 can move in the assembly hole 101.

[0048] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 The anti-retraction clamp 100 includes a plug screw 50 , which is threadedly connected to the mounting hole 102 , and the plug screw 50 is located on a side of the guide sleeve 30 facing away from the elastic member 21 .

[0049] In one embodiment of this implementation, please refer to Figures 2 to 4 , Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the elastic clamping block 10. A plurality of deformation grooves 104 are provided on the outer circumference of the elastic clamping block 10. The plurality of deformation grooves 104 are arranged in an array along the circumference of the elastic clamping block 10. The deformation grooves 104 extend along the axial direction of the assembly hole 101. With such a configuration, the elastic clamping block 10 can be deformed more easily to help elastically clamp the workpiece 200.

[0050] In this embodiment, the number of the deformation grooves 104 is 4, and the 4 deformation grooves 104 are arranged in an array along the circumference of the elastic clamping block 10. The deformation groove 104 extends from the middle position of the outer circumference of the elastic clamping block 10 to the end surface at the opening of the assembly hole 101. The deformation groove 104 is a through groove, and the deformation groove 104 is connected with the mounting hole 102 and the assembly hole 101. With such an arrangement, the clamping force on the workpiece 200 is evenly distributed along the circumference, and the elastic clamping block 10 can better elastically clamp the workpiece 200.

[0051] In this embodiment, a positioning installation groove 105 is further provided on the outer periphery of the elastic clamping block 10 . The positioning installation groove 105 is communicated with the deformation groove 104 . The positioning installation groove 105 is used for positioning and installing the elastic clamping block 10 on the machine tool body.

[0052] See also Figure 1 and Figure 2 The embodiment of the utility model provides a machine tool, which can be a milling machine, a lathe, a milling machine, a drilling machine or other mechanical processing equipment. The machine tool includes a machine tool body (not shown), a processing device (not shown) and an anti-retreat clamp 100 provided in the embodiment of the utility model. The anti-retreat clamp 100 and the processing device are both arranged on the machine tool body. The anti-retreat clamp 100 is used to install a workpiece 200, and the processing device is used to process the end face of the elastic supporting component 20 of the workpiece 200 that is facing away from the anti-retreat clamp 100. Specifically, the processing device can be provided with various tools such as a milling cutter, a turning tool, and a drilling tool, and the end face of the workpiece 200 is processed by these tools. By adding the anti-retreat clamp 100 provided in the embodiment of the utility model to the machine tool, the risk of retreat and movement of the workpiece 200 during the processing and the risk of collision can be reduced.

[0053] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. An anti-retraction clamp, characterized in that: include: The elastic clamping block is provided with an assembly hole; An elastic abutment component is slidably connected to the elastic clamping block, the elastic abutment component can be extended and retracted relative to the elastic clamping block, the elastic abutment component extends into the assembly hole, the elastic abutment component is used to elastically abut against the end face of the workpiece, and the inner wall of the assembly hole is used to elastically abut against the outer peripheral surface of the workpiece.

2. The anti-retraction clamp according to claim 1, characterized in that: The anti-retraction clamp comprises a guide sleeve, the elastic clamping block is provided with a mounting hole, the mounting hole is communicated with the assembly hole, the guide sleeve is mounted in the mounting hole, and the elastic abutting component is slidably connected with the guide sleeve.

3. The anti-retraction clamp according to claim 2, characterized in that: The elastic supporting assembly comprises an elastic member and a push rod, the guide sleeve is provided with a guide hole, the push rod is slidably matched with the guide hole, one end of the elastic member is connected to the push rod, and the other end of the elastic member is connected to the guide sleeve.

4. The anti-retraction clamp according to claim 3, characterized in that: The inner wall of the mounting hole is provided with a relatively protruding first boss, the assembly hole is opened on the first boss, the push rod is provided with a second boss, the second boss abuts against the elastic member, and the side of the second boss facing away from the elastic member abuts against the first boss.

5. The anti-retraction clamp according to claim 3, characterized in that: The guide sleeve is threadedly connected to the mounting hole. The guide sleeve can rotate relative to the elastic clamping block to move in the mounting hole to adjust the compression degree of the elastic member.

6. The anti-retraction clamp according to claim 5, characterized in that: An adjustment groove is formed on the end surface of the guide sleeve facing away from the elastic member.

7. The anti-retraction clamp according to claim 5, characterized in that: The anti-retraction clamp comprises a locking piece, which is penetrated through the elastic clamping block and connected with the external thread of the guide sleeve to limit the relative position of the elastic clamping block and the guide sleeve.

8. The anti-retraction clamp according to claim 3, characterized in that: The push rod and the assembly hole are clearance-fitted.

9. The anti-retraction clamp according to claim 1, characterized in that: A plurality of deformation grooves are formed on the outer circumference of the elastic clamping block. The plurality of deformation grooves are distributed in an array along the circumference of the elastic clamping block. The deformation grooves extend along the axial direction of the assembly hole.

10. A machine tool, characterized in that: It comprises a machine tool body, a processing device and an anti-retreat clamp according to any one of claims 1 to 9, wherein the anti-retreat clamp and the processing device are both arranged on the machine tool body, the anti-retreat clamp is used to install a workpiece, and the processing device is used to process the end face of the elastic supporting component of the workpiece facing away from the anti-retreat clamp.

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