Clamping mechanism and CNC automatic fixture device

Abstract

This application relates to a clamping mechanism and a CNC automatic fixture device. Among them, the clamping mechanism includes: a frame assembly; a clamping assembly, the clamping assembly includes a clamping driving part, a transmission part, a first clamping part and a second clamping part, the first clamping part is arranged on the frame assembly, the clamping driving part is connected to the second clamping part through the transmission part, and the second clamping part and the transmission part have mutually cooperating pressing inclined surfaces. The technical solution of this application effectively solves the problem of unstable clamping of the clamping mechanism in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of fixture devices, and more particularly, to a clamping mechanism and a CNC automatic fixture device. Background Art

[0002] With the development of society, automation has replaced traditional manual labor as a trend. In line with the trend of the times and the development of the times, an in-machine automatic loading fixture is developed. The purpose is to reduce labor costs, reduce the impact of human factors on product quality, improve material utilization rate and processing efficiency. When the CNC automatic loading fixture conveys and clamps, the clamping is unstable and the problem of dislocation occurs. Summary of the Invention

[0003] The present application provides a clamping mechanism and a CNC automatic fixture device to solve the problem of unstable clamping of the clamping mechanism in the prior art.

[0004] According to a clamping mechanism provided by the present application, it includes: a frame assembly; a clamping assembly, the clamping assembly includes a clamping driving part, a transmission part, a first clamping part and a second clamping part. The first clamping part is arranged on the frame assembly, the clamping driving part is connected to the second clamping part through the transmission part, and the second clamping part and the transmission part have mutually cooperating pressing inclined surfaces.

[0005] Further, the clamping assembly further includes a clamping limiting part, the clamping limiting part is fixed on the frame assembly, the clamping limiting part and the second clamping part have a mutually cooperating first sliding track structure, and the second clamping part is slidably arranged on the clamping limiting part.

[0006] Further, one side of the second clamping part facing away from the first clamping part has a first pressing inclined surface, and / or one side of the transmission part facing the second clamping part has a second pressing inclined surface.

[0007] Further, the clamping surface of the second clamping part has a rough surface.

[0008] Further, the clamping driving part includes a first cylinder, the clamping assembly further includes a connecting part, the connecting part is connected to the output end of the first cylinder, one connecting part is connected to a plurality of transmission parts, and the transmission parts are arranged corresponding to the second clamping parts one by one.

[0009] Further, the connecting part and the first cylinder are connected by a first pin, and the connecting part and the transmission part are connected by a second pin.

[0010] Further, the clamping mechanism further includes a transmission assembly, the transmission assembly includes a driving rack structure and a positioning rack structure, both the driving rack structure and the positioning rack structure are arranged on the frame assembly, and the clamping assembly is fixed on the driving rack structure.

[0011] Further, the driving rack structure includes a displacement driving part, a driving rack, a clamping position driving part and a clamping position part. The displacement driving part is fixed on the frame assembly, the driving rack is connected to the displacement driving part, the clamping position part is connected to the clamping position driving part. The clamping position part has a driving state in which it engages with the driving rack, and a to-be-driven state in which it disengages from the driving rack.

[0012] Further, the positioning rack structure includes a positioning rack, a fixing block and a fixing block driving part. The positioning rack is fixed on the frame assembly, the fixing block is connected to the fixing block driving part. The fixing block has a fixing state in which it cooperates with the positioning rack, and a to-be-fixed state in which it disengages from the positioning rack.

[0013] According to another aspect of the present application, there is also provided a CNC automatic fixture device. The CNC automatic fixture device includes a clamping mechanism and a material shaking mechanism that cooperates with the clamping mechanism. The clamping mechanism is the above-mentioned clamping mechanism.

[0014] Applying the technical solution of the present application, when the first clamping part and the second clamping part cooperate to clamp the object to be clamped, the clamping driving part drives the transmission part to press against the second clamping part to approach the first clamping part, so as to realize the clamping of the object to be clamped. The second clamping part and the transmission part have mutually cooperating pressing inclined surfaces, so that the transmission part can apply a continuously adjustable pressing force to the second clamping part, thereby ensuring the stability of the clamping. The technical solution of the present application effectively solves the problem of unstable clamping of the clamping mechanism in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Shows a three-dimensional structural schematic diagram of the clamping mechanism according to an embodiment of the present application;

[0018] Figure 2 Shows Figure 1 a partial structural schematic diagram of the clamping mechanism.

[0019] Among them, the above-mentioned drawings include the following reference numerals:

[0020] 10. Frame assembly; 20. Clamping assembly; 21. Clamping driving part; 22. Transmission part; 23. First clamping part; 24. Second clamping part; 25. Clamping limiting part; 30. Transmission assembly; 31. Driving rack structure; 311. Displacement driving part; 312. Driving rack; 313. Positioning driving part; 314. Positioning part; 32. Positioning rack structure; 321. Positioning rack; 322. Fixed block; 323. Fixed block driving part; 100. Product to be processed. Detailed implementation mode

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0022] It should be pointed out that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0023] For the sake of convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" and the like can be used herein to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways, rotated 90 degrees or in other orientations, and corresponding explanations are made for the spatial relative descriptions used herein.

[0024] As Figure 1 and Figure 2 shown, the clamping mechanism of this embodiment includes: a frame assembly 10 and a clamping assembly 20. The clamping assembly 20 includes a clamping driving part 21, a transmission part 22, a first clamping part 23 and a second clamping part 24. The first clamping part 23 is arranged on the frame assembly 10. The clamping driving part 21 is connected to the second clamping part 24 through the transmission part 22. The second clamping part 24 and the transmission part 22 have mutually cooperating pressing inclined surfaces.

[0025] When the first clamping part 23 and the second clamping part 24 cooperate to clamp the object to be clamped by applying the technical solution of this embodiment, the clamping driving part 21 drives the transmission part 22 to press against the second clamping part 24 to approach the first clamping part 23, so as to realize the clamping of the object to be clamped. The second clamping part 24 and the transmission part 22 have mutually cooperating pressing inclined surfaces, so that the transmission part 22 can apply a continuously adjustable pressing force to the second clamping part 24, thereby ensuring the stability of clamping. The technical solution of this embodiment effectively solves the problem of unstable clamping of the clamping mechanism in the prior art.

[0026] It should be noted that the direction of relative movement between the second clamping part 24 and the transmission part 22 is the same as the inclination direction of the pressing inclined surface, which means that at least the component movement directions of the relative movement between the second clamping part 24 and the transmission part 22 are the same. In this embodiment, the relative movement direction between the second clamping part 24 and the transmission part 22 is the same as the direction of the pressing inclined surface. For example, as Figure 1 shown, the transmission part 22 moves horizontally, and the second clamping part 24 and the transmission part 22 are pressing inclined surfaces. According to the synthesis and decomposition of forces for analysis, the second clamping part 24 receives a force in the vertical direction, and the clamping force of the second clamping part 24 on the product 100 to be processed is relatively large (the second clamping part 24 is affected by the clamping limiting part 25, which cancels out the horizontal component force of the transmission part 22 on the second clamping part 24).

[0027] As Figure 1 shown, in the technical solution of this embodiment, the clamping assembly 20 further includes a clamping limiting part 25. The clamping limiting part 25 is fixed on the frame assembly 10. The clamping limiting part 25 and the second clamping part 24 have mutually cooperating first slideway structures, and the second clamping part 24 is slidably arranged on the clamping limiting part 25. The setting of the clamping limiting part 25 enables the second clamping part 24 to move along a predetermined trajectory. It should be noted that a slideway is provided on the clamping limiting part 25, and a sliding groove is provided on the second clamping part 24. The extending direction of the slideway is the moving direction of the second clamping part 24. The first slideway structure is located on both the left and right sides of the second clamping part 24, and the moving direction of the transmission part 22 is the front-back direction.

[0028] As Figure 1 shown, in the technical solution of this embodiment, one side of the second clamping part 24 facing away from the first clamping part 23 has a first pressing inclined surface, and / or one side of the transmission part 22 facing the second clamping part 24 has a second pressing inclined surface. The above structure is compact. According to the force analysis of the inclined surface, the second clamping part 24 receives a component force towards the first clamping part 23, that is, the first clamping part 23 and the second clamping part 24 clamp and fix the object to be clamped. In the technical solution of this embodiment, one side of the second clamping part 24 facing away from the first clamping part 23 has a first pressing inclined surface, and one side of the transmission part 22 facing the second clamping part 24 has a second pressing inclined surface.

[0029] As Figure 1 shown, in the technical solution of this embodiment, the clamping surface of the second clamping portion 24 has a rough surface. The setting of the rough surface makes the clamping of the first clamping portion 23 and the second clamping portion 24 on the object to be clamped more stable. It should be noted that the rough surface is a serrated surface, and as other rough surfaces, it can be a concave-convex surface. There is a second slideway structure that cooperates with each other between the second clamping portion 24 and the transmission portion 22

[0030] As Figure 1 shown, in the technical solution of this embodiment, the clamping driving portion 21 includes a first air cylinder, and the clamping assembly 20 further includes a connecting portion. The connecting portion is connected to the output end of the first air cylinder. One connecting portion is connected to a plurality of transmission portions 22, and the transmission portions 22 are arranged in one-to-one correspondence with the second clamping portions 24. Connecting one connecting portion to a plurality of transmission portions 22 in this way has higher efficiency. It should be noted that in the technical solution of this embodiment, there are two transmission portions 22, and the two transmission portions 22 are respectively located on both sides of the output end of the first air cylinder, which ensures that the forces on the first air cylinder, the connecting portion, and the second clamping portion 24 are relatively uniform.

[0031] As Figure 1 shown, in the technical solution of this embodiment, the connecting portion and the first air cylinder are connected by a first pin, and the connecting portion and the transmission portion 22 are connected by a second pin. The above structure has a high disassembly and assembly efficiency and is convenient for disassembly and assembly. It should be noted that both the first pin and the second pin are conical, the connecting hole between the connecting portion and the first air cylinder is conical, and the connecting hole between the connecting portion and the transmission portion 22 is also conical, so that the matching error caused by manufacturing tolerances can be compensated by the cooperation of the first pin and the second pin.

[0032] As Figure 1 and Figure 2 shown, in the technical solution of this embodiment, the clamping mechanism further includes a transmission assembly 30. The transmission assembly 30 includes a driving rack structure 31 and a positioning rack structure 32. Both the driving rack structure 31 and the positioning rack structure 32 are arranged on the frame assembly 10, and the clamping assembly 20 is fixed on the driving rack structure 31. The driving rack structure 31 can move the clamping assembly 20 to a relatively close position, and then the first air cylinder is used for pressing and adjusting.

[0033] As Figure 2As shown, in the technical solution of this embodiment, the driving rack structure 31 includes a displacement driving part 311, a driving rack 312, a clamping position driving part 313 and a clamping position part 314. The displacement driving part 311 is fixed on the frame assembly 10. The driving rack 312 is connected to the displacement driving part 311. The clamping position part 314 is connected to the clamping position driving part 313. The clamping position part 314 has a driving state in which it engages with the driving rack 312, and a to-be-driven state in which it disengages from the driving rack 312. The cooperation between the driving rack 312 and the clamping position part 314 makes the movement smoother and more stable. It should be noted that the driving rack structure 31 has a limiting part and an adjusting part. The setting of the limiting part limits the extreme position of the driving first cylinder of the driving rack structure 31, and the extreme position of the limiting part can be adjusted through the adjusting part. It should be noted that the driving rack 312 includes a connecting belt plate and a plurality of teeth arranged on the connecting belt plate. The structure of a single tooth is as follows: in the direction from away from the clamping assembly 20 to close to the clamping assembly 20, the thickness of the tooth gradually increases, and a stepped surface is formed on the side facing the clamping assembly 20. The clamping position driving part 313 drives the clamping position part 314 so that the clamping position part 314 cooperates with the driving rack 312. The adjacent teeth among the plurality of teeth are arranged adjacent to each other in sequence on the connecting belt plate.

[0034] As Figure 2 As shown, in the technical solution of this embodiment, the positioning rack structure 32 includes a positioning rack 321, a fixing block 322 and a fixing block driving part 323. The positioning rack 321 is fixed on the frame assembly 10. The fixing block 322 is connected to the fixing block driving part 323. The fixing block 322 has a fixing state in which it cooperates with the positioning rack 321, and a to-be-fixed state in which it disengages from the positioning rack 321. The above structure ensures that after the first clamping part 23 and the second clamping part 24 clamp the object to be clamped in place, the situation of instability of the object to be clamped will not occur.

[0035] The technical solution of the present application also provides a CNC automatic fixture device. The CNC automatic fixture device includes a clamping mechanism and a material shaking mechanism that cooperates with the clamping mechanism. The clamping mechanism is the above-mentioned clamping mechanism. The material shaking mechanism includes a mating hole, and a part of the object to be clamped penetrates into the mating hole. By shaking the material shaking mechanism, the object to be clamped is broken and separated. The CNC automatic fixture device also includes a material collection box, and the processed materials are collected into the material collection box. Usually, the material collection box is in a closed state. When it is necessary to collect materials, the control structure controls the material collection box to open, and the materials can be collected into the material collection box. CNC (Computerized Numerical Control) is short for Computer Numerical Control machine tool, which is an automated machine tool controlled by a program. The control system can logically process a program with control codes or other symbolic instructions, decode it through a computer, so that the machine tool executes the specified actions, and processes the blank material into semi-finished or finished parts through tool cutting.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0038] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clamping mechanism, characterized in that, Comprising: A frame assembly (10); A clamping assembly (20), the clamping assembly (20) comprising a clamping drive part (21), a transmission part (22), a first clamping part (23) and a second clamping part (24), the first clamping part (23) being arranged on the frame assembly (10), the clamping drive part (21) being connected to the second clamping part (24) through the transmission part (22), and the second clamping part (24) and the transmission part (22) having mutually cooperating pressing inclined surfaces; The clamping assembly (20) further comprises a clamping limiting part (25), the clamping limiting part (25) being fixed on the frame assembly (10), the clamping limiting part (25) and the second clamping part (24) having a mutually cooperating first slideway structure, and the second clamping part (24) being slidably arranged on the clamping limiting part (25); The clamping surface of the second clamping part (24) has a rough surface; The clamping mechanism further comprises a transmission assembly (30), the transmission assembly (30) comprising a driving rack structure (31) and a positioning rack structure (32), the driving rack structure (31) and the positioning rack structure (32) both being arranged on the frame assembly (10), and the clamping assembly (20) being fixed on the driving rack structure (31); The driving rack structure (31) comprises a displacement driving part (311), a driving rack (312), a clamping driving part (313) and a clamping part (314), the displacement driving part (311) being fixed on the frame assembly (10), the driving rack (312) being connected to the displacement driving part (311), the clamping part (314) being connected to the clamping driving part (313), the clamping part (314) having a driving state of engaging with the driving rack (312), and the clamping part (314) having a to-be-driven state of disengaging from the driving rack (312); The positioning rack structure (32) comprises a positioning rack (321), a fixing block (322) and a fixing block driving part (323), the positioning rack (321) being fixed on the frame assembly (10), the fixing block (322) being connected to the fixing block driving part (323), and the fixing block (322) having a fixing state of cooperating with the positioning rack (321) and a to-be-fixed state of disengaging from the positioning rack (321).

2. The clamping mechanism according to claim 1, wherein One side of the second clamping part (24) facing away from the first clamping part (23) has a first pressing inclined surface, and / or one side of the transmission part (22) facing the second clamping part (24) has a second pressing inclined surface.

3. The clamping mechanism according to claim 1, characterized in that, The clamping drive part (21) comprises a first air cylinder, the clamping assembly (20) further comprises a connecting part, the connecting part being connected to the output end of the first air cylinder, one connecting part being connected to a plurality of the transmission parts (22), and the transmission parts (22) being arranged in one-to-one correspondence with the second clamping parts (24).

4. The clamping mechanism according to claim 3, characterized in that, The connecting part is connected to the first cylinder by a first pin, and the connecting part is connected to the transmission part (22) by a second pin.

5. A CNC automatic fixture device, characterized in that, The CNC automatic fixture device includes a clamping mechanism and a shaking mechanism that cooperates with the clamping mechanism, and the clamping mechanism is the clamping mechanism described in any one of claims 1 to 4.

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