CN217619285U - Clamping device and automation equipment - Google Patents

Abstract

The utility model discloses a clamping device and automation equipment, the clamping device includes base member, actuating mechanism and clamping machine construct. The substrate has a first channel. The driving mechanism comprises a shell, a piston and a lever assembly, the shell is connected with the base body, the shell comprises a cavity communicated with the first channel, and the piston and the lever assembly are movably arranged in the cavity. The lever component is rotationally connected with the piston and is a labor-saving lever. The clamping mechanism comprises an adapter and a clamping assembly, the adapter is connected to the shell, the lever assembly is connected with the clamping assembly, and the clamping assembly is used for clamping materials. Gas enters the cavity through the first channel to drive the piston to move close to the adapter, the piston drives the clamping assembly to move close to the piston through the lever assembly, the clamping assembly is enabled to abut against the adapter, and therefore the inner diameter of the clamping space is reduced to clamp materials. The clamping assembly clamps the material with larger clamping force, improves the clamping stability of the material, occupies smaller space and reduces the requirement on space.

Description

Clamping device and automation equipment

Technical Field

The utility model belongs to the technical field of the numerical control processing, in particular to clamping device and automation equipment.

Background

When the existing automatic numerical control lathe equipment clamps a cutter through a manipulator, the manipulator takes out the cutter from a jig plate outside a machine table and puts the cutter into the jig of the machine table, so that the automatic material changing function is realized. Because the space is limited, the clamping force of the manipulator clamping tool is small, so that the manipulator clamping tool is easy to loosen when clamping the tool, and then the material changing precision is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a clamping device to improve the clamping force of the material in a limited space.

An embodiment of the utility model provides a clamping device, construct including base member, actuating mechanism and clamping. The substrate has a first channel for conveying a gas. The driving mechanism comprises a shell, a piston and a lever assembly, the shell is connected with the base body, the shell comprises a cavity, the cavity is communicated with the first channel, the piston and the lever assembly are movably arranged in the cavity, and one end of the lever assembly is rotatably connected with the piston. The clamping mechanism comprises an adapter and a clamping assembly, the adapter is connected to one side, away from the base body, of the shell, the lever assembly is connected with the adapter, the clamping assembly movably penetrates through the adapter, one end of the clamping assembly is meshed with the other end of the lever assembly, the other end of the clamping assembly protrudes out of the adapter and is provided with a clamping space with a variable inner diameter, and the clamping space is used for clamping materials. Gas enters the cavity through the first channel to drive the piston to move close to the adapter, the piston is used for driving the clamping assembly to move close to the piston through the lever assembly, the clamping assembly is pressed against the adapter, and therefore the inner diameter of the clamping space is reduced to clamp the material.

Above-mentioned clamping device drives the clamping subassembly through laborsaving lever subassembly and removes to make the clamping subassembly press from both sides the material with great clamping-force, improve the clamp to the material and get stability, and occupation space is less, reduces the requirement to the space.

In some embodiments of the present invention, the lever assembly includes a first connecting member and a second connecting member, one end of the first connecting member is rotatably connected to the piston, and the other end of the first connecting member is engaged with one end of the clamping assembly close to the piston; one end of the second connecting piece is rotatably connected with the first connecting piece, and the other end of the second connecting piece is connected with the adapter.

In some embodiments of the present invention, the first connector includes a first end, a second end, and a connecting portion between the first end and the second end, the first end being rotationally connected to the piston; the second end is connected with the clamping assembly in a meshed mode, the second end comprises a first tooth group meshed with the clamping assembly, and the connecting portion is connected with the second connecting piece in a rotating mode.

In some embodiments of the present invention, a distance between the first end portion and the connecting portion is greater than a distance between the second end portion and the connecting portion.

In some embodiments of the utility model, the clamping subassembly is including clamping piece and third connecting piece, the third connecting piece is located in the cavity, the lateral surface of third connecting piece be equipped with the second tooth group that first tooth group meshed, the clamping piece is worn to locate movably the adapter, just the one end of clamping piece is connected the third connecting piece, the other end of clamping piece has the changeable clamping space of internal diameter.

The utility model discloses an in some embodiments, actuating mechanism is still including the piece that resets, the one end butt that resets the adapter, other end butt the piston, the piston still is used for keep away from under the elastic drive that resets the adapter motion, with through the lever subassembly drives the clamping subassembly is kept away from the piston motion makes the other end of clamping subassembly breaks away from the extrusion of adapter so that clamping space grow to loosen the material.

In some embodiments of the present invention, the drive mechanism further comprises a first seal disposed between the inner sidewall of the housing and the outer sidewall of the piston.

In some embodiments of the invention the inner wall of the adapter has a first inner surface, the clamping member has a first outer surface, the first outer surface abuts against the first inner surface; one end of the adapter is provided with a first opening which faces the base body and is communicated with the cavity, and the other end of the adapter is provided with a second opening; the cross-sectional areas of the first inner surface and the first outer surface are gradually increased along the direction close to the second opening.

In some embodiments of the present invention, the outer surface of the clamping member is provided with a limiting groove;

the clamping mechanism further comprises a fourth connecting piece, the fourth connecting piece penetrates through the adapter, one end of the fourth connecting piece extends into the limiting groove and is used for limiting the clamping piece to rotate relative to the adapter.

The embodiment of the utility model also provides an automation equipment, including above-mentioned arbitrary embodiment the clamping device. The clamping device drives the clamping assembly to move through the labor-saving lever assembly, so that the clamping assembly clamps materials with large clamping force, the clamping stability of the materials is improved, the processing quality of automatic equipment is improved, the occupied space is small, and the requirement on the space is reduced.

Drawings

Fig. 1 is a schematic structural view of a clamping device according to an embodiment of the present invention.

Fig. 2 is a sectional view II-II of fig. 1.

Fig. 3 is a first view of the clamping device according to an embodiment of the present invention in an exploded state.

Fig. 4 is a second view of the clamping device according to an embodiment of the present invention in an exploded state.

Fig. 5 is a schematic structural view of the lever assembly connecting and clamping assembly according to an embodiment of the present invention.

Fig. 6 is an exploded view of the lever assembly and the clamping assembly according to an embodiment of the present invention.

Fig. 7 is a cross-sectional view of an adapter in an embodiment of the invention.

Description of the main elements

Clamping device 100

Substrate 10

First channel 11

Fifth connecting part 12

Recess 13

Drive mechanism 20

Case 21

Chamber 211

Convex part 212

Through hole 213

Piston 22

Lever assembly 23

First connecting member 231

First end 2311

Second end 2312

First tooth set 23121

Connecting part 2313

Second connecting member 232

First pin 233

Second pin 234

First seal 24

Fastener 25

Second channel 251

Second seal 26

Restoring member 27

Clamping mechanism 30

Adapter 31

Accommodating space 311

First opening 312

Second opening 313

First inner surface 314

Flange part 315

Fixing hole 316

The first accommodating groove 317

Clamping assembly 32

Clip 321

First outer surface 3211

Clamping space 3212

Limiting groove 3213

Through hole 3214

Third connecting member 322

Second tooth group 3221

Receiving hole 3222

Fourth connecting member 33

Cutting tool 200

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

An embodiment of the utility model provides a clamping device, construct including base member, actuating mechanism and clamping. The substrate has a first channel for conveying a gas. The driving mechanism comprises a shell, a piston and a lever assembly, the shell is connected with the base body, the shell comprises a cavity, the cavity is communicated with the first channel, the piston and the lever assembly are movably arranged in the cavity, and one end of the lever assembly is rotatably connected with the piston. The clamping mechanism comprises an adapter and a clamping assembly, the adapter is connected to one side, away from the base body, of the shell, the lever assembly is connected with the adapter, the clamping assembly movably penetrates through the adapter, one end of the clamping assembly is meshed with the other end of the lever assembly, the other end of the clamping assembly protrudes out of the adapter and is provided with a clamping space with a variable inner diameter, and the clamping space is used for clamping materials. Gas enters the cavity through the first channel to drive the piston to move close to the adapter, the piston is used for driving the clamping assembly to move close to the piston through the lever assembly, the clamping assembly is pressed against the adapter, and therefore the inner diameter of the clamping space is reduced to clamp the material.

The clamping device drives the clamping assembly to move through the labor-saving lever assembly, so that the clamping assembly clamps the material with larger clamping force, the clamping stability of the material is improved, the occupied space is smaller, and the requirement on the space is reduced.

By way of example, the following further describes the material as a cutter.

The embodiments of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the present invention provides a clamping device 100 for automatically clamping a tool 200. The clamping device 100 comprises a base body 10, a driving mechanism 20 and a clamping mechanism 30, wherein the driving mechanism 20 is respectively connected with the base body 10 and the clamping mechanism 30, and the driving mechanism 20 can drive the clamping mechanism 30 to clamp the tool 200.

The base body 10 is used for connecting a power mechanism in an automation device so that the clamping device 100 can be installed on the automation device. In an embodiment, the base 10 is a tool shank, one end of the tool shank is connected to the automation device, the other end of the tool shank is connected to the driving mechanism 20 and the clamping mechanism 30, the tool shank drives the clamping mechanism 30 to clamp the tool 200 through the driving mechanism 20, and the automation device can drive the tool 200 clamped by the clamping mechanism 30 to move to the processing jig so as to replace the tool 200 on the processing jig.

In one embodiment, the base body 10 is provided with a fifth connecting element 12, the fifth connecting element 12 being provided at an end of the base body 10 remote from the clamping means 30, the fifth connecting element 12 being used for detachably connecting the base body 10 to an automation device. The interior of the fifth connecting member 12 has a hollow structure. Alternatively, the fifth connecting member 12 may be a hollow blind rivet, and the base body 10 may be detachably connected to the automation device through the blind rivet.

The base body 10 has a first passage 11, the first passage 11 communicating with the hollow interior of the fifth connecting piece 12, so that gas can enter the first passage 11 through the hollow interior of the fifth connecting piece 12 to act on the drive means 20.

The drive mechanism 20 includes a housing 21, a piston 22, and a lever assembly 23. The housing 21 is connected to the base 10, the housing 21 has a chamber 211, the piston 22 and the lever assembly 23 are movably disposed in the chamber 211, one end of the lever assembly 23 is rotatably connected to the piston 22, and the other end of the lever assembly 23 is engaged with the clamping mechanism 30, wherein the lever assembly 23 is a labor-saving lever. The piston 22 is movable in the chamber 211 away from or toward the base body 10 and via the lever assembly 23 moves the chuck 30 toward or away from the piston 22 to cause the chuck 30 to clamp the tool 200 or release the tool 200. The clamping device 100 drives the clamping assembly 32 to move through the labor-saving lever assembly 23, so that the clamping assembly 32 clamps materials with larger clamping force, the clamping stability of the materials can be improved, the occupied space is smaller, and the requirement on the space is reduced.

In one embodiment, the first passage 11 communicates with the chamber 211, and the gas can sequentially enter the chamber 211 through the first passage 11 and the hollow interior of the fifth connecting member 12. The gas entering the chamber 211 through the first channel 11 may act on the piston 22, causing the piston 22 to move in the chamber 211 in a direction away from the substrate 10.

The clamping mechanism 30 is arranged on one side of the driving mechanism 20 far away from the base body 10, and the clamping mechanism 30 comprises an adapter 31 and a clamping assembly 32. The adapter 31 is connected to the housing 21 and located on one side of the housing 21 away from the base 10, the clamping assembly 32 movably penetrates through the adapter 31, one end of the clamping assembly 32 is engaged with the other end of the lever assembly 23, and the other end of the clamping assembly 32 opposite to the other end protrudes out of the adapter 31. The lever assembly 23 is also connected to an adapter 31. The clamping assembly 32 is provided with a clamping space 3212 with a variable inner diameter, the clamping space 3212 can be used for clamping the cutter 200, the inner diameter of the clamping space 3212 is smaller, the cutter 200 can be clamped, and the inner diameter of the clamping space 3212 is larger, and the cutter 200 can be loosened. In an embodiment, when the clamping space 3212 of the clamping assembly 32 is passively decreased, the clamping space 3212 has an increased self-driving force.

The gas sequentially enters the cavity 211 through the hollow interior of the fifth connecting piece 12 and the first channel 11, and can act on the piston 22, so that the piston 22 moves close to the adapter 31, the piston 22 drives the clamping assembly 32 to move close to the piston 22 through the lever assembly 23, and the outer side wall of the clamping assembly 32 is abutted against the inner side wall of the adapter 31, so that the inner diameter of the clamping space 3212 is reduced, and the cutter 200 is clamped.

As shown in fig. 2, 3 and 4, in an embodiment, the driving mechanism 20 further includes a first sealing member 24, the first sealing member 24 is disposed in the chamber 211 and located between an outer side wall of the piston 22 and an inner side wall of the housing 21, and the first sealing member 24 separates spaces on both sides of the piston 22 to perform a sealing function, so that the gas entering the chamber 211 from the first passage 11 can drive the piston 22 to move. Specifically, a groove is formed on the circumferential surface of the piston 22, at least a portion of the first sealing member 24 is disposed in the groove, and the first sealing member 24 is further abutted against the inner wall of the chamber 211 to improve airtightness between the piston 22 and the inner side wall of the housing 21.

In one embodiment, the first seal 24 is compressed in the radial direction of the piston 22, which ensures the reliability of the seal. Alternatively, the radial compressibility E of the first seal 24 satisfies: e is more than or equal to 8 percent and less than or equal to 20 percent.

Wherein the radial compressibility of the first seal 24 represents: the ratio of the thickness of the first seal 24 compressed to the thickness of the first seal 24 before compression in the radial direction of the piston 22.

In one embodiment, the first seal 24 comprises a gasket. Optionally, the material of the sealing ring includes, but is not limited to, any one of natural rubber, nitrile rubber, hydrogenated nitrile rubber, silicone rubber, ethylene propylene diene monomer, fluororubber, butyl rubber, chloroprene rubber, polytetrafluoroethylene rubber, polyurethane, or perfluororubber.

In one embodiment, the driving mechanism 20 further includes a fastener 25, and the housing 21 is connected to the base 10 through the fastener 25, so that the housing 21 is stably connected to the base 10. The fastener 25 is provided with a second channel 251, and the second channel 251 is respectively communicated with the first channel 11 and the chamber 211, so that gas can enter the chamber 211 along the first channel 11 and the second channel 251.

Alternatively, the fastener 25 comprises a screw, and the second channel 251 extends through the screw in the direction of the central axis of the screw.

In one embodiment, the driving mechanism 20 further comprises a second sealing member 26, wherein the second sealing member 26 is located between the housing 21 and the base 10 to seal the joint between the housing 21 and the base 10, thereby reducing the risk of gas leakage from the joint between the housing 21 and the base 10 in the first passage 11 and the chamber 211.

In one embodiment, the housing 21 has a protrusion 212, the protrusion 212 is located on a side of the housing 21 close to the substrate 10, the protrusion 212 has a through hole 213, and the through hole 213 communicates with the chamber 211. The base 10 has a recess 13 for mating with the protrusion 212, the protrusion 212 is disposed in the recess 13, and at least a portion of the fastener 25 passes through the through hole 213 and connects to the base 10, such that the protrusion 212 is tightly disposed in the recess 13. In one embodiment, a second seal 26 may be disposed between the protrusion 212 and the recess 13 to provide a sealed connection between the housing 21 and the substrate 10.

In one embodiment, the second seal 26 comprises a gasket. Optionally, the material of the sealing ring includes, but is not limited to, any one of natural rubber, nitrile rubber, hydrogenated nitrile rubber, silicone rubber, ethylene propylene diene monomer, fluororubber, butyl rubber, chloroprene rubber, polytetrafluoroethylene rubber, polyurethane, or perfluororubber.

In one embodiment, referring to fig. 3 and 4, the lever assembly 23 includes a first connecting member 231 and a second connecting member 232, one end of the first connecting member 231 is rotatably connected to the piston 22, the other end of the first connecting member 231 is engaged with one end of the clamping assembly 32 close to the piston 22, one end of the second connecting member 232 is rotatably connected to the first connecting member 231, and the other end of the second connecting member 232 is connected to the adapter 31. In one embodiment, the second connecting member 232 is fixedly connected to the adaptor 31, and the first connecting member 231 can rotate around the connection with the second connecting member 232. The piston 22 moves in the chamber 211 to drive the first connecting member 231 to rotate relative to the second connecting member 232, so that the first connecting member 231 drives the clamping assembly 32 to move.

Referring to fig. 5 and 6, in an embodiment, the first connecting member 231 includes a first end 2311, a second end 2312 and a connecting portion 2313 located between the first end 2311 and the second end 2312, the first end 2311 is rotatably connected to the piston 22, the second end 2312 is engaged with the clamping assembly 32, and the connecting portion 2313 is rotatably connected to the second connecting member 232. In one embodiment, the distance between the first end 2311 and the connecting portion 2313 is d1, the distance between the second end 2312 and the connecting portion 2313 is d2, and d1 > d2, so that the lever assembly 23 is a labor-saving lever, the force applied to the first end 2311 by the piston 22 is smaller than the force applied to the clamping assembly 32 by the second end 2312, the clamping force applied to the tool 200 by the clamping assembly 32 is improved, the occupied space of the lever assembly 23 is smaller, the space of the cavity 211 of the housing 21 does not need to be increased, and the requirement for the space is reduced. Optionally, d1=2 × d2, the force applied by the second end 2312 to the clamping assembly 32 is twice the force applied by the piston 22 to the first end 2311, which doubles the clamping force applied by the clamping assembly 32 to the tool 200.

In one embodiment, the lever assembly 23 further includes a first pin 233, and the first pin 233 rotatably connects the first end 2311 and the piston 22 such that the first end 2311 can rotate relative to the piston 22. In one embodiment, the lever assembly 23 further includes a second pin 234, and the second pin 234 rotatably connects the connecting portion 2313 and the second link 232 such that the second end 2312 can rotate relative to the second link 232.

In one embodiment, the second end 2312 is provided with a first set of teeth 23121, and the end of the clamping assembly 32 adjacent to the piston 22 is provided with a second set of teeth 3221 engaged with the first set of teeth 23121. The second end 2312 moves close to or away from the piston 22, and the clamping assembly 32 can be driven to move close to or away from the piston 22 through the engagement of the first tooth group 23121 and the second tooth group 3221, so that the stability of the clamping assembly 32 driven by the lever assembly 23 to move is improved.

In one embodiment, the lever assemblies 23 are provided in a plurality of sets, the piston 22 has a central axis, and the plurality of sets of lever assemblies 23 are spaced apart from each other along the circumferential direction of the piston 22 around the central axis of the piston 22. The number of the second tooth groups 3221 on the clamping assembly 32 is equal to that of the lever assemblies 23, the clamping assembly 32 has a central axis, all the second tooth groups 3221 are arranged at intervals in the circumferential direction of the clamping assembly 32 by taking the central axis of the clamping assembly 32 as a center, and the first tooth groups 23121 of the second end portions 2312 on all the lever assemblies 23 are all engaged with different second tooth groups 3221. In an embodiment, the central axis of the clamping assembly 32 coincides with the central axis of the piston 22, all the lever assemblies 23 are arranged around the clamping assembly 32, and the piston 22 drives the clamping assembly 32 to move synchronously through all the lever assemblies 23, so that the moving stability and precision of the clamping assembly 32 can be improved, and the stability and precision of the clamping assembly 32 for clamping the tool 200 are improved.

In one embodiment, all the lever assemblies 23 are disposed at equal intervals with the center axis of the piston 22 as the center, and all the second tooth sets 3221 are disposed at equal intervals with the center axis of the clamping assembly 32 as the center.

Optionally, the number of the lever assemblies 23 is three, and the number of the second tooth sets 3221 on the clamping assembly 32 is three.

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, in an embodiment, the clamping assembly 32 includes a clamping member 321 and a third connecting member 322, the third connecting member 322 is located in the cavity 211, the second tooth set 3221 is located on an outer peripheral side of the third connecting member 322, the third connecting member 322 is engaged with the second end 2312 through the second tooth set 3221, the clamping member 321 movably penetrates through the adaptor 31, one end of the clamping member 321 extends into the cavity 211 and is connected to the third connecting member 322, the other end of the clamping member 321 extends out of an end of the adaptor 31 away from the housing 21, and the clamping space 3212 with a variable inner diameter is located at an end of the clamping member 321 away from the third connecting member 322. In an embodiment, the clamping member 321 is an elastically deformable structure, and when the clamping member 321 is pressed by an external force, the clamping member 321 can be deformed to reduce the inner diameter of the clamping space 3212, and when the external force is reduced or eliminated, the self-restoring force of the clamping member 321 can increase or restore the inner diameter of the clamping space 3212 to the original size.

In one embodiment, the clamp 321 is detachably connected to the third connector 322. The third connecting member 322 has a receiving hole 3222, and one end of the clamp 321 is inserted into the receiving hole 3222 to connect with the third connecting member 322. The design that the clamping member 321 and the third connecting member 322 can be plugged in and pulled out allows the clamping member 321 to be conveniently disassembled and assembled, and the third connecting member 322 is located in the chamber 211, so that the clamping member 321 can be disassembled and assembled without disassembling the housing 21. In one embodiment, the receiving hole 3222 extends through the third connector 322. In an embodiment, an outer diameter of the end of the clamping member 321 inserted into the receiving hole 3222 corresponds to an inner diameter of the receiving hole 3222, so that the end of the clamping member 321 is connected to the third connecting member 322 in an interference manner, which can improve stability of the clamping member 321 connected to the third connecting member 322.

Referring to fig. 2, fig. 6 and fig. 7, in an embodiment, the adapter 31 has a receiving space 311, and a first opening 312 and a second opening 313 communicating with the receiving space 311, the first opening 312 and the second opening 313 are located at two opposite ends of the adapter 31, and the first opening 312 faces the substrate 10 and communicates with the cavity 211. The clamping member 321 is movably disposed in the accommodating space 311, one end of the clamping member 321 close to the third connecting member 322 extends out of the first opening 312 and is connected to the third connecting member 322, and one end of the clamping member 321 away from the third connecting member 322 extends out of the second opening 313. The inner wall of the adapter 31 has a first inner surface 314, the first inner surface 314 is a partial inner wall of the accommodating space 311, the outer wall of the holder 321 has a first outer surface 3211, and the first outer surface 3211 abuts against the first inner surface 314.

In one embodiment, the cross-sectional area of each of the first inner surface 314 and the first outer surface 3211 increases from the first opening 312 toward the second opening 313.

When the clamping member 321 moves close to the piston 22, the first inner surface 314 presses the first outer surface 3211, so that the clamping member 321 deforms, the inner diameter of the clamping space 3212 decreases, and the clamping member 321 can clamp the tool 200. When the clamping member 321 moves away from the piston 22, the force of the first inner surface 314 pressing the first outer surface 3211 becomes smaller, the clamping space 3212 is released to become larger, the inner diameter of the clamping space 3212 becomes larger until the original size is recovered, and the clamping member 321 can release the cutter 200.

In one embodiment, the adapter 31 has a flange portion 315, the flange portion 315 is located on a side of the adapter 31 close to the housing 21, and the flange portion 315 is connected to the housing 21 and surrounds the housing 21 to form the chamber 211. Alternatively, the flange portion 315 is fixedly connected to the housing 21 by bolts.

In an embodiment, in a connection direction between the first opening 312 and the second opening 313, when the adapter 31 is connected to the housing 21, the clamping member 321 is applied with a force in a direction away from the piston 22, so that the clamping member 321 can be taken out from the second opening 313, and the step of installing the clamping member 321 is reversed, so that the connection between the adapter 31 and the housing 21 does not need to be removed, and the convenience and efficiency of assembling and disassembling the clamping member 321 can be improved.

In an embodiment, referring to fig. 3, a limiting groove 3213 is disposed on the first outer surface 3211 of the clamping member 321, the clamping mechanism 30 further includes a fourth connecting member 33, the fourth connecting member 33 is disposed through the adapter 31, and one end of the fourth connecting member 33 extends into the limiting groove 3213 to limit the rotation of the clamping member 321 relative to the adapter 31.

In an embodiment, the clamping member 321 has a central axis, the central axis of the clamping member 321 is parallel to a connecting line direction of the first opening 312 and the second opening 313, the limiting groove 3213 extends along the central axis of the clamping member 321, and the fourth connecting member 33 is engaged with the limiting groove 3213, so that the clamping member 321 can only move relative to the adapter 31 along the connecting line direction of the first opening 312 and the second opening 313, but cannot rotate relative to the adapter 31, thereby improving the moving stability and precision of the clamping member 321, and improving the stability and precision of the clamping member 321 for clamping the tool 200.

In one embodiment, the adapter 31 has a fixing hole 316, the fixing hole 316 penetrates through the hole wall of the adapter 31 and communicates with the accommodating space 311, the fourth connecting element 33 is disposed in the fixing hole 316, and one end of the fourth connecting element 33 extends into the limiting groove 3213. In one embodiment, the fixing hole 316 is a threaded hole, and the fourth connecting member 33 is a locking bolt, which is detachably connected to the adapter 31 through the threaded hole, thereby facilitating adjustment of the position of the fourth connecting member 33 relative to the clamping member 321, and facilitating detachment and replacement.

In an embodiment, along the central axis direction of the clamping member 321, both ends of the limiting groove 3213 do not communicate with the end of the clamping member 321. In a state where the fourth connecting member 33 is engaged with the limiting groove 3213, the fourth connecting member 33 can limit displacement of the clamping member 321 in the central axis direction, so as to prevent the clamping member 321 from moving excessively relative to the adapter 31. When the clamping member 321 is removed, the position of the fourth connecting member 33 relative to the adaptor 31 needs to be adjusted, so that the fourth connecting member 33 is separated from the limiting groove 3213. When the clamping member 321 is installed, the position of the fourth connecting member 33 relative to the adapter 31 needs to be adjusted to prevent the fourth connecting member 33 from extending into the accommodating space 311 to interfere with the clamping member 321, and after the clamping member 321 is installed in place, the fourth connecting member 33 is adjusted to enable one end of the fourth connecting member 33 to extend into the limiting groove 3213, so that the fourth connecting member 33 is matched with the limiting groove 3213 to limit the clamping member 321.

In an embodiment, the holder 321 has a plurality of limiting grooves 3213, and the limiting grooves 3213 are disposed on the first outer surface 3211 at intervals along a circumferential direction of the holder 321, with a central axis of the holder 321 as a center. In an embodiment, a plurality of position-limiting grooves 3213 are disposed on the first outer surface 3211 at equal intervals. Optionally, the number of the limiting grooves 3213 on the holder 321 is three.

In an embodiment, a through hole 3214 is formed in the clamping member 321, the through hole 3214 penetrates through a side wall of the clamping member 321 and communicates with the clamping space 3212, the through hole 3214 extends along a central axis direction of the clamping member 321, and the through hole 3214 communicates with an end of the clamping member 321 away from the piston 22. The through hole 3214 allows the holder 321 to deform when subjected to radial pressing force, and then reduces the inner diameter of the holder space 3212.

In an embodiment, the number of the through holes 3214 in the fixture 321 is multiple, and the through holes 3214 are arranged at intervals along the circumferential direction of the fixture 321 with the central axis of the fixture 321 as a center. In one embodiment, the through holes 3214 are disposed at equal intervals. In one embodiment, the through holes 3214 and the limiting grooves 3213 are sequentially and alternately arranged along the circumferential direction of the clamping member 321. Optionally, the number of the through holes 3214 on the fixture 321 is three.

Referring to fig. 3 and 4, in an embodiment, the driving mechanism 20 further includes a reset member 27, one end of the reset member 27 abuts against the adapter 31, the other end of the reset member 27 abuts against the piston 22, and the reset member 27 can drive the piston 22 to move away from the adapter 31, so as to drive the clamping member 321 to move away from the piston 22 through the lever assembly 23, so that the first outer surface 3211 of the clamping member 321 is separated from the pressing of the first inner surface 314 on the adapter 31, and then the inner diameter of the clamping space 3212 is increased, so as to loosen the cutter 200.

In one embodiment, the number of the restoring members 27 is plural, and the plural restoring members 27 are circumferentially disposed between the piston 22 and the adaptor 31 with the central axis of the piston 22 as the center, so that the piston 22 is uniformly stressed to smoothly move in the chamber 211.

Optionally, a first receiving groove 317 is formed in a side of the flange portion 315 of the adapter 31, which is close to the piston 22, and one end of the reset member 27 is disposed in the first receiving groove 317, so that stability of the reset member 27 connected to the adapter 31 can be improved.

In one embodiment, the return member 27 comprises a compression spring.

The embodiment of the utility model provides an automation equipment is still provided, including power unit and any one of the above-mentioned embodiment clamping device 100. The base 10 is detachably connected to a power mechanism through a fifth connecting member 12, and high-pressure gas is delivered into the first channel 11 through the power mechanism, so that the high-pressure gas enters the chamber 211 to drive the piston 22 to drive the clamping member 321 to move close to the piston 22 through the lever assembly 23, and then the clamping member 321 clamps the tool 200.

In some embodiments, the power mechanism may be a CNC (Computerized Numerical Control) spindle to which the substrate 10 is removably coupled via a connector. When the tool 200 is grasped, the tool 200 is positioned in the clamping member 321, the gas valve is opened, and high-pressure gas sequentially enters the first channel 11 and the chamber 211 through the CNC main shaft to drive the piston 22 to drive the clamping member 321 to move close to the piston 22 through the lever assembly 23, so that the adapter 31 presses the clamping member 321, and thus, the inner diameter of the clamping space 3212 in the clamping member 321 is reduced to enable the clamping member 321 to clamp the tool 200. The CNC main shaft drives clamping device 100 and moves to processing tool top, makes clamping device 100 place cutter 200 on processing tool, need loosen cutter 200 this moment, closes the pneumatic valve, and piston 22 resets under the effect of piece 27 that resets to drive clamping piece 321 through lever assembly 23 and keep away from piston 22 and move, make clamping piece 321 loosen cutter 200 then, realize changing cutter 200 automatically. The utility model discloses only need a gas circuit to provide power, can realize automatic change cutter 200, stability is good, and is efficient.

The utility model discloses a clamping device 100 drives clamping subassembly 32 through laborsaving lever subassembly 23 and removes to make clamping subassembly 32 press from both sides the material with great clamping-force, improve the clamp to the material and get stability, and occupation space is less, reduces the requirement to the space.

In addition, other changes may be made by those skilled in the art without departing from the spirit of the invention, and it is intended that all such changes be considered within the scope of the invention as disclosed.

Claims (10)

1. A clamping device, comprising:

a substrate having a first channel for conveying a gas;

the driving mechanism comprises a shell, a piston and a lever assembly, the shell is connected with the base body and comprises a cavity, the cavity is communicated with the first channel, the piston and the lever assembly are movably arranged in the cavity, and one end of the lever assembly is rotatably connected with the piston;

the clamping mechanism comprises an adapter and a clamping assembly, the adapter is connected to one side, away from the base body, of the shell, the lever assembly is connected with the adapter, the clamping assembly movably penetrates through the adapter, one end of the clamping assembly is meshed with the other end of the lever assembly, the other end of the clamping assembly protrudes out of the adapter and is provided with a clamping space with a variable inner diameter, and the clamping space is used for clamping materials;

the piston is used for driving the clamping assembly to move close to the piston through the lever assembly, so that the clamping assembly is abutted against the adapter, and the inner diameter of the clamping space is reduced to clamp the material.

2. The clamping device as recited in claim 1, wherein the lever assembly comprises a first connecting member and a second connecting member, one end of the first connecting member is rotatably connected with the piston, and the other end of the first connecting member is engaged with one end of the clamping assembly close to the piston; one end of the second connecting piece is rotatably connected with the first connecting piece, and the other end of the second connecting piece is connected with the adapter.

3. The clamp of claim 2, wherein the first connector includes a first end, a second end, and a connection between the first end and the second end, the first end being rotationally connected to the piston; the second end is connected with the clamping assembly in a meshed mode, the second end comprises a first tooth group meshed with the clamping assembly, and the connecting portion is connected with the second connecting piece in a rotating mode.

4. The holder of claim 3, wherein the distance between the first end and the connecting portion is greater than the distance between the second end and the connecting portion.

5. A clamping device as claimed in claim 3, wherein the clamping assembly includes a clamping member and a third connecting member, the third connecting member is located in the chamber, a second set of teeth engaged with the first set of teeth is provided on an outer side surface of the third connecting member, the clamping member movably penetrates the adaptor, one end of the clamping member is connected to the third connecting member, and the other end of the clamping member has a clamping space with a variable inner diameter.

6. The clamping device as recited in claim 1, wherein the driving mechanism further comprises a reset member, one end of the reset member abuts against the adapter, the other end of the reset member abuts against the piston, and the piston is further configured to move away from the adapter under the elastic driving of the reset member, so that the lever assembly drives the clamping assembly to move away from the piston, and the other end of the clamping assembly is separated from the pressing of the adapter, so that the clamping space is enlarged, and the material is loosened.

7. The chuck assembly of claim 1, wherein the drive mechanism further includes a first seal disposed between an inner sidewall of the housing and an outer sidewall of the piston.

8. The clamping device of claim 5,

the inner wall of the adapter is provided with a first inner surface, the clamping piece is provided with a first outer surface, and the first outer surface abuts against the first inner surface;

one end of the adapter is provided with a first opening which faces the base body and is communicated with the cavity, and the other end of the adapter is provided with a second opening;

the cross-sectional areas of the first inner surface and the first outer surface are gradually increased along the direction close to the second opening.

9. The clamping device of claim 5,

the outer surface of the clamping piece is provided with a limiting groove;

the clamping mechanism further comprises a fourth connecting piece, the fourth connecting piece penetrates through the adapter, one end of the fourth connecting piece extends into the limiting groove and is used for limiting the clamping piece to rotate relative to the adapter.

10. An automated apparatus, comprising a clamping device according to any one of claims 1 to 9.

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