A fixture suitable for multi-station clamping of small parts for machining

Abstract

The present application provides a kind of clamps suitable for multi-station clamping small parts processing, the clamp is by being provided with first installation groove on the first mounting surface of base plate, first locking groove and second locking groove communicated with first installation groove are respectively arranged on the both ends of the first locking surface of base plate, first locking assembly is arranged in first installation groove and is located on the side of power unit close to first locking groove position, second locking assembly is arranged in first installation groove and is located on the other side of power unit close to second locking groove position, first fixed column inserted into first locking groove and second fixed column inserted into second locking groove are respectively provided on the first fixed surface of first clamping main plate, it is convenient for power unit to drive first locking assembly and second locking assembly to lock and fix first clamping unit on base plate, clamping efficiency is high, and accurate repeat positioning can be achieved, product quality stability is good, simultaneously, first clamping unit is convenient to disassemble and replace, can maximize reduce downtime, guarantee processing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of precision machining, and particularly relates to a clamp suitable for multi-station clamping of small parts machining. BACKGROUND

[0002] At present, with the continuous emergence of new technologies and new materials, the machining of products tends to be more and more high-precision and good surface finish, and excellent products and high product production efficiency are the guarantee for enterprises to improve product added value and competitiveness.

[0003] In the face of the machining of a large number of products by numerical control machining centers, in order to improve market competitiveness, the following points have higher requirements: 1. quick clamping to reduce downtime; 2. high positioning accuracy to ensure the stability of the size of batch production; 3. strong and effective locking force to ensure the quality stability of machining. In view of these requirements, the commonly used zero-point positioning system on the market is used to design the corresponding clamp, and usually because the volume of the zero-point positioning system is relatively large, it is not suitable for machining small parts, and the tool needs to be long to avoid interference with the zero-point positioning clamp, so that the excessive vibration of the tool leads to low tool life, poor product quality stability and low machining efficiency. SUMMARY

[0004] The purpose of the present application is to solve the problem of using the commonly used zero-point positioning system on the market to design the clamp, which is not suitable for machining small parts, and the shortcomings of poor product quality stability and low machining efficiency in the prior art, and a clamp suitable for multi-station clamping of small parts machining is provided.

[0005] To achieve the above object, the present application adopts the following technical scheme: A fixture suitable for multi-station clamping of small parts processing, comprising a base plate, a power unit, a locking unit and a first clamping unit for simultaneously clamping multiple small parts to be processed, the base plate comprises a first locking surface and a first mounting surface, the first locking surface and the first mounting surface are perpendicular, both ends of the first locking surface are respectively provided with a first locking groove and a second locking groove, the first mounting surface is provided with a first mounting groove, the first locking groove and the second locking groove are both in communication with the first mounting groove; the power unit is arranged at the middle position of the first mounting groove; the locking unit comprises a first locking assembly and a second locking assembly, the first locking assembly is arranged in the first mounting groove at a position close to the first locking groove on the side of the power unit, the second locking assembly is arranged in the first mounting groove at a position close to the second locking groove on the other side of the power unit, the first locking assembly and the second locking assembly are both connected with the power unit; the first clamping unit comprises a first clamping main plate, the first clamping main plate comprises a first fixing surface, the first fixing surface is provided with a first fixing column at a position corresponding to the first locking groove, the first fixing surface is provided with a second fixing column at a position corresponding to the second locking groove, the first fixing column is inserted into the first locking groove, the second fixing column is inserted into the second locking groove, the first locking assembly locks the first fixing column in the first locking groove under the action of the power unit, and the second locking assembly locks the second fixing column in the second locking groove under the action of the power unit.

[0006] Preferably, the first locking assembly comprises a first fixing member, a first driving member and a first action member, the first fixing member is fixed in the first mounting groove at a position close to the first locking groove, the first driving member is arranged in the first mounting groove at a position close to the power unit, the first action member is arranged in the first mounting groove at a position corresponding to the side of the first fixing member close to the first locking groove, one end of the first driving member is connected with the power unit, the other end of the first driving member is connected with one end of the first action member, the other end of the first action member is connected with the middle part of the first fixing member, the side of the first action member close to the first locking groove is provided with a first locking protrusion, the side wall of the first fixing column is provided with a first locking recess, and the first locking protrusion and the first locking recess are matched with each other.

[0007] Further, the second locking assembly comprises a second fixing member, a second driving member and a second action member. The second fixing member is fixed in the first mounting groove near the second locking groove. The second driving member is arranged in the first mounting groove near the power unit. The second action member is arranged in the first mounting groove corresponding to the side of the second fixing member near the second locking groove. One end of the second driving member is connected with the power unit shaft. The other end of the second driving member is connected with one end of the second action member. The other end of the second action member is connected with the middle part of the second fixing member. The side of the second action member near the second locking groove is provided with a second locking protrusion. The side wall of the second fixing column is provided with a second locking recess. The second locking protrusion and the second locking recess are matched with each other. The first fixing column comprises a first positioning cylindrical part and a first locking conical part. The first positioning cylindrical part and the first locking conical part are connected. The outer diameter of the first positioning cylindrical part is equal to the inner diameter of the first locking groove. The first locking recess is arranged on the side wall of the first locking conical part.

[0008] Preferably, the first locking surface is further provided with a first error prevention hole and a second error prevention hole. The distance from the first error prevention hole to the first locking groove is not equal to the distance from the second error prevention hole to the second locking groove. The first fixing surface is provided with a first positioning column corresponding to the first error prevention hole. The first fixing surface is provided with a second positioning column corresponding to the second error prevention hole. The first positioning column is inserted into the first error prevention hole. The second positioning column is inserted into the second error prevention hole.

[0009] Preferably, the first clamping unit further comprises a plurality of first clamping members and a plurality of first positioning members. The first clamping main plate further comprises a first clamping surface perpendicular to the first fixing surface and a first action surface parallel to the first fixing surface. The first clamping surface is provided with a plurality of accommodating grooves. The first action surface is provided with a plurality of clamping grooves corresponding to the plurality of accommodating grooves. Each clamping groove is communicated with the corresponding accommodating groove. The plurality of clamping grooves, the plurality of first clamping members and the plurality of first positioning members are one-to-one corresponding. Each first clamping member comprises a clamping part and a locking part. The clamping part is connected with the locking part belonging to the same first clamping member. The clamping part is arranged in the corresponding accommodating groove. One end of the locking part passes through the corresponding clamping groove and is connected with the clamping part belonging to the same first clamping member. Each first positioning member is fixed on the first clamping surface and abuts against the clamping part of the corresponding first clamping member.

[0010] Preferably, the locking unit further comprises a third locking assembly and a fourth locking assembly. The base plate further comprises a second locking surface arranged in parallel with the first locking surface. The two ends of the second locking surface are respectively provided with a third locking groove and a fourth locking groove. The third locking groove and the fourth locking groove are communicated with the first mounting groove. The third locking assembly is arranged in the first mounting groove near the third locking groove on one side of the power unit. The fourth locking assembly is arranged in the first mounting groove near the fourth locking groove on the other side of the power unit. The third locking assembly and the fourth locking assembly are connected with the power unit.

[0011] Further, the clamp further comprises a second clamping unit, the second clamping unit comprises a second clamping main plate, the second clamping main plate comprises a second fixing surface, a third fixing column is arranged at a position corresponding to the third locking groove on the second fixing surface, a fourth fixing column is arranged at a position corresponding to the fourth locking groove on the second fixing surface, the third fixing column is inserted into the third locking groove, the fourth fixing column is inserted into the fourth locking groove, the third locking assembly locks the third fixing column in the third locking groove under the action of the power unit, and the fourth locking assembly locks the fourth fixing column in the fourth locking groove under the action of the power unit.

[0012] Still further, the power unit comprises a first cylinder and a second cylinder, the first locking assembly and the third locking assembly are connected with the first cylinder, the second locking assembly and the fourth locking assembly are connected with the second cylinder, the first mounting groove comprises a left mounting part, a middle mounting part and a right mounting part, the left mounting part and the right mounting part are symmetrically arranged about the symmetry plane of the middle mounting part, the first locking groove and the third locking groove are in communication with the left mounting part, the second locking groove and the fourth locking groove are in communication with the right mounting part, the first locking groove and the second locking groove are symmetrical about the symmetry plane of the middle mounting part, the third locking groove and the fourth locking groove are symmetrical about the symmetry plane of the middle mounting part, the first locking assembly and the second locking assembly are symmetrically arranged in the left mounting part and the right mounting part respectively about the symmetry plane of the middle mounting part, the third locking assembly and the fourth locking assembly are symmetrically arranged in the left mounting part and the right mounting part respectively about the symmetry plane of the middle mounting part, the first cylinder is arranged in the middle mounting part close to the first locking assembly and the third locking assembly, the second cylinder is arranged in the middle mounting part close to the second locking assembly and the fourth locking assembly, and the first cylinder and the second cylinder are symmetrical about the symmetry plane of the middle mounting part.

[0013] Still further, the first locking assembly and the third locking assembly are connected with the first cylinder through a first swing ring, and the second locking assembly and the fourth locking assembly are connected with the second cylinder through a second swing ring.

[0014] Compared with the prior art, the beneficial effects of the present application are that: by arranging the first mounting groove on the first mounting surface of the base plate, arranging the first locking groove and the second locking groove communicated with the first mounting groove at both ends of the first locking surface of the base plate respectively, arranging the first locking assembly in the first mounting groove at the position close to the first locking groove on the one side of the power unit, arranging the second locking assembly in the first mounting groove at the position close to the second locking groove on the other side of the power unit, arranging the first fixing column inserted into the first locking groove and the second fixing column inserted into the second locking groove on the first fixing surface of the first clamping main plate respectively, the power unit can drive the first locking assembly and the second locking assembly to lock and fix the first clamping unit on the base plate, the clamping efficiency is high, and the accurate and repeated positioning can be realized, the product quality stability is good, meanwhile, the first clamping unit is convenient to disassemble and replace, the downtime can be minimized, and the machining efficiency can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural schematic view of a clamp suitable for multi-station clamping small parts machining according to an embodiment of the present application;

[0016] Figure 2 FIG. 2 is a top view structural schematic view of the clamp of FIG. 1; Figure 1

[0017] Figure 3 FIG. 4 is a front view structural schematic view of the clamp of FIG. 1; Figure 1

[0018] Figure 4 FIG. 6 is a sectional view structural schematic view of the clamp of FIG. 1 along the AA direction; Figure 3

[0019] Figure 5 FIG. 8 is a sectional view structural schematic view of the clamp of FIG. 1 along the BB direction; Figure 3

[0020] Figure 6 FIG. 10 is a structural schematic view of the base plate according to an embodiment of the present application;

[0021] Figure 7 FIG. 12 is a structural schematic view of the first clamping main plate according to an embodiment of the present application;

[0022] Figure 8 FIG. 14 is a structural schematic view of the first fixing column according to an embodiment of the present application;

[0023] Figure 9 FIG. 16 is a structural schematic view of the first driving member and the third driving member connected with the first cylinder shaft according to an embodiment of the present application;

[0024] Figure 10 FIG. 18 is a use state view of the clamp of FIG. 1. Figure 1 DETAILED DESCRIPTION

[0025] ​​​​​For the purpose, structure, features, and functions of the present application, further understanding, detailed description is as follows with examples.

[0026] Please see Figures 1 to 9 The present application is a fixture suitable for multi-station clamping small parts processing, comprising a base plate 10, a power unit 20, a locking unit 30 and a first clamping unit 40, wherein the base plate 10 is used to fix and install the power unit 20, the locking unit 30 and the first clamping unit 40, the power unit 20 is used to drive the locking unit 30 to lock the first clamping unit 40 on the base plate 10, and the first clamping unit 40 is used to clamp a plurality of small parts to be processed 100.

[0027] The base plate 10 comprises a first locking surface 11 and a first mounting surface 12, the first locking surface 11 is used to lock and install the first clamping unit 40, the first mounting surface 12 is used to fix and install the power unit 20 and the locking unit 30, the first locking surface 11 and the first mounting surface 12 are perpendicular, the two ends of the first locking surface 11 are respectively provided with a first locking groove 111 and a second locking groove 112, and the first mounting surface 12 is provided with a first mounting groove 121, the first locking groove 111 and the second locking groove 112 are in communication with the first mounting groove 121.

[0028] The power unit 20 is arranged at the middle position of the first mounting groove 121.

[0029] The locking unit 30 comprises a first locking assembly 31 and a second locking assembly 32, the first locking assembly 31 is arranged in the first mounting groove 121 at the position close to the first locking groove 111 on the side of the power unit 20, the second locking assembly 32 is arranged in the first mounting groove 121 at the position close to the second locking groove 112 on the other side of the power unit 20, and the first locking assembly 31 and the second locking assembly 32 are connected with the power unit 20.

[0030] The first clamping unit 40 comprises a first clamping main plate 41, the first clamping main plate 41 comprises a first fixing surface 411, the first fixing surface 411 is provided with a first fixing column 42 at the position corresponding to the first locking groove 111, and is provided with a second fixing column 43 at the position corresponding to the second locking groove 112, the first fixing column 42 is inserted into the first locking groove 111, the second fixing column 43 is inserted into the second locking groove 112, the first locking assembly 31 locks the first fixing column 42 in the first locking groove 111 under the action of the power unit 20, and the second locking assembly 32 locks the second fixing column 43 in the second locking groove 112 under the action of the power unit 20.

[0031] After clamping the plurality of small parts 100 to be machined by the first clamping unit 40, the first fixing column 42 is inserted into the first locking groove 111, the second fixing column 43 is inserted into the second locking groove 112, the control action unit 20 is controlled to work, the first locking assembly 31 locks the first fixing column 42 in the first locking groove 111, and the second locking assembly 32 locks the second fixing column 43 in the second locking groove 112, so as to realize the locking of the first clamping unit 40. During the processing gap of the clamp, the clamping of the plurality of small parts 100 to be machined on the other first clamping unit 40 is carried out, and after the processing is completed, the first clamping unit 40 provided with the machined small parts is removed, and the first clamping unit 40 provided with the small parts to be machined is replaced, which can maximize the reduction of downtime and improve the processing efficiency.

[0032] The clamp of the embodiment is provided with the first mounting groove 121 on the first mounting surface 12 of the base plate 10, the first locking groove 111 and the second locking groove 112 which are communicated with the first mounting groove 121 are respectively arranged at both ends of the first locking surface 11 of the base plate 10, the first locking assembly 31 is arranged in the first mounting groove 121 and located at the position close to the first locking groove 111 on the side of the power unit 20, the second locking assembly 32 is arranged in the first mounting groove 121 and located at the position close to the second locking groove 112 on the other side of the power unit 20, the first fixing column 42 inserted into the first locking groove 111 and the second fixing column 43 inserted into the second locking groove 112 are respectively arranged on the first fixing surface 411 of the first clamping main plate 41, so as to facilitate the power unit 20 to drive the first locking assembly 31 and the second locking assembly 32 to lock and fix the first clamping unit 40 on the base plate 10, the clamping efficiency is high, the accurate and repeated positioning can be realized, the product quality stability is good, and the first clamping unit 40 is convenient to disassemble and replace, which can maximize the reduction of downtime and ensure the processing efficiency.

[0033] Please continue to see Figure 4 and Figure 5The first locking assembly 31 includes a first fixing member 311, a first driving member 312, and a first actuating member 313. The first fixing member 311 is fixed in the first mounting groove 121 near the first locking groove 111. The first driving member 312 is located in the first mounting groove 121 near the power unit 20. The first actuating member 313 is located in the first mounting groove 121 at a position corresponding to the side of the first fixing member 311 near the first locking groove 111. One end of the first driving member 312 is axially connected to the power unit 20, and the other end of the first driving member 312 is axially connected to one end of the first actuating member 313. The other end of the actuating member 313 is axially connected to the middle of the first fixing member 311. The first actuating member 313 has a first locking protrusion 3131 on the side near the first locking groove 111, and a first locking recess 421 is provided on the side wall of the first fixing post 42. The first locking protrusion 3131 and the first locking recess 421 cooperate with each other so that when the power unit 20 drives the first driving member 312 to move, it can drive the first actuating member 313 to rotate around the middle of the first fixing member 311, so that the first locking protrusion 3131 pushes into the first locking recess 421 and locks the first fixing post 42 in the first locking groove 111.

[0034] Similarly, the second locking assembly 32 includes a second fixing member 321, a second driving member 322, and a second actuating member 323. The second fixing member 321 is fixed in the first mounting groove 121 near the second locking groove 112. The second driving member 322 is located in the first mounting groove 121 near the power unit 20. The second actuating member 323 is located in the first mounting groove 121 at a position corresponding to the side of the second fixing member 321 near the second locking groove 112. One end of the second driving member 322 is axially connected to the power unit 20, and the other end of the second driving member 322 is axially connected to the second actuating member 323. The other end of the actuating member 323 is axially connected to the middle of the second fixing member 321. The second actuating member 323 has a second locking protrusion 3231 on the side near the second locking groove 112, and a second locking recess 431 is provided on the side wall of the second fixing post 43. The second locking protrusion 3231 and the second locking recess 431 cooperate with each other so that when the power unit 20 drives the second driving member 322 to move, it can drive the second actuating member 323 to rotate around the middle of the second fixing member 321, so that the second locking protrusion 3231 pushes into the second locking recess 431, and locks the second fixing post 43 in the second locking groove 112.

[0035] To reduce the size of the clamp while maintaining a locking effect, i.e., to reduce the size of the base plate 10, please refer to [link to relevant documentation]. Figure 5 The first locking protrusion 3131 is located near the first fixing member 311 of the first actuating member 313 to increase the lever arm length and improve the locking force, so that a small volume can generate a stronger locking force.

[0036] Similarly, the second locking protrusion 3231 is arranged at the position of the second action member 323 close to the second fixed member 321 to increase the length of the force arm and improve the locking force, so that the small volume can also generate stronger locking force.

[0037] In order to facilitate the insertion of the first fixed column 42 into the first locking slot 111 and cooperate with the first action member 313 to lock, please refer to Figure 8 , the first fixed column 42 includes a first positioning cylindrical portion 422 and a first locking conical portion 423, the first positioning cylindrical portion 422 and the first locking conical portion 423 are connected, the outer diameter of the first positioning cylindrical portion 422 is equal to the inner diameter of the first locking slot 111, and the first locking recess 421 is arranged on the side wall of the first locking conical portion 423 to ensure the repeatability of the positioning by the first positioning cylindrical portion 422, and the corresponding position of the first mounting slot 121 is easily aligned by the first locking conical portion 423, so as to facilitate the locking operation.

[0038] Similarly, the second fixed column 43 includes a second positioning cylindrical portion and a second locking conical portion, the second positioning cylindrical portion and the second locking conical portion are connected, the outer diameter of the second positioning cylindrical portion is equal to the inner diameter of the second locking slot, and the second locking recess is arranged on the side wall of the second locking conical portion, so as to ensure the repeatability of the positioning by the second positioning cylindrical portion, and the corresponding position of the first mounting slot is easily aligned by the second locking conical portion, so as to facilitate the locking operation.

[0039] In order to avoid the situation that the first clamping unit 40 is installed in reverse and reduce the operation difficulty of the operator, please refer to Figure 4 , the first locking surface 11 is further provided with a first mistake prevention hole 113 and a second mistake prevention hole 114, the distance from the first mistake prevention hole 113 to the first locking slot 111 is not equal to the distance from the second mistake prevention hole 114 to the second locking slot 112, the first fixed surface 411 is provided with a first positioning column 44 at the position corresponding to the first mistake prevention hole 113, and the first fixed surface 411 is provided with a second positioning column 45 at the position corresponding to the second mistake prevention hole 114, the first positioning column 44 is inserted into the first mistake prevention hole 113, and the second positioning column 45 is inserted into the second mistake prevention hole 114, so that when the first positioning column 44 and the second positioning column 45 can be inserted into the first mistake prevention hole 113 and the second mistake prevention hole 114 respectively, it can be ensured that the first clamping unit is correctly installed on the base plate 10.

[0040] In order to enable the first clamping unit 40 to clamp multiple small parts 100 to be machined at the same time, please refer to Figure 4 , Figure 5 and Figure 7The first clamping unit 40 further comprises a plurality of first clamping members 46 and a plurality of first positioning members 47, the first clamping main plate 41 further comprises a first clamping surface 412 perpendicular to the first fixing surface 411 and a first action surface 413 parallel to the first fixing surface 411, the first clamping surface 412 is provided with a plurality of accommodating grooves 4121, the first action surface 413 is provided with a plurality of clamping grooves 4131 at positions corresponding to the plurality of accommodating grooves 4121, each clamping groove 4131 is in communication with the corresponding accommodating groove 4121, the plurality of clamping grooves 4131, the plurality of first clamping members 46 and the plurality of first positioning members 47 are one-to-one corresponding, each first clamping member 46 comprises a clamping portion 461 and a locking portion 462, the clamping portion 461 is connected with the locking portion 462 belonging to the same first clamping member 46, the clamping portion 461 is arranged in the corresponding accommodating groove 4121, one end of the locking portion 462 passes through the corresponding clamping groove 4131 and is connected with the clamping portion 461 belonging to the same first clamping member 46, each first positioning member 47 is fixed on the first clamping surface 412 and abuts against the clamping portion 461 of the corresponding first clamping member 46, in this way, after the small part 100 to be machined is placed in the accommodating groove 4121, the clamping portion 461 is controlled to be in close contact with the surface of the small part 100 to be machined close to the clamping portion 461 through the locking portion 462, the small part 100 to be machined is limited between the clamping portion 461 and the accommodating groove 4121, then the first positioning member 47 is fixed on the first clamping surface 412 to make the first positioning member 47 abut against the clamping portion 461, so as to prevent the clamping portion 461 from being displaced and vibrated during machining, thereby ensuring the machining quality of the small part 100.

[0041] Preferably, please continue to refer to Figure 4 , Figure 5 and Figure 7 , the side wall of the locking portion 462 is provided with external threads, the corresponding clamping groove 4131 of the locking portion 462 is provided with internal threads matched with the external threads, the clamping portion 461 can be in contact with the surface of the small part 100 to be machined close to the clamping portion 461 by tightening the locking portion 462; each accommodating groove 4121 comprises a first accommodating surface 4122 and a second accommodating surface 4123 perpendicular to each other, the clamping portion 461 is provided with a limiting groove, the limiting groove comprises a first limiting surface parallel to the first accommodating surface 4122 and a second limiting surface parallel to the second accommodating surface 4123, in this way, the first accommodating surface 4122, the second accommodating surface 4123, the first limiting surface and the second limiting surface can be used for clamping and fixing the square small part 100 to be machined. Different shapes of the accommodating grooves and the limiting groove of the clamping portion 461 can be set according to the actual shape of the small part to be machined, as long as the small part to be machined can be limited and fixed.

[0042] In order to make full use of the substrate 10, while ensuring the clamping efficiency of the clamp, the locking unit 30 further comprises a third locking assembly 33 and a fourth locking assembly 34, and the substrate 10 further comprises a second locking surface 13 arranged in parallel with the first locking surface 11, both ends of the second locking surface 13 are respectively provided with a third locking groove 131 and a fourth locking groove 132, both the third locking groove 131 and the fourth locking groove 132 are communicated with the first mounting groove 121, the third locking assembly 33 is arranged in the first mounting groove 121 and located on the side of the power unit 20 close to the third locking groove 131, and the fourth locking assembly 132 is arranged in the first mounting groove 121 and located on the other side of the power unit 20 close to the fourth locking groove 132, both the third locking assembly 33 and the fourth locking assembly 34 are connected with the power unit 20.

[0043] Further, the clamp further comprises a second clamping unit 50, the second clamping unit 50 comprises a second clamping main plate 51, the second clamping main plate 51 comprises a second fixed surface 511, a third fixed column 52 is arranged on the second fixed surface 511 at a position corresponding to the third locking groove 131, a fourth fixed column 53 is arranged on the second fixed surface 511 at a position corresponding to the fourth locking groove 132, the third fixed column 52 is inserted into the third locking groove 131, the fourth fixed column 53 is inserted into the fourth locking groove 132, the third locking assembly 33 locks the third fixed column 52 in the third locking groove 131 under the action of the power unit 20, and the fourth locking assembly 34 locks the fourth fixed column 53 in the fourth locking groove 132 under the action of the power unit 20.

[0044] After clamping a plurality of small parts to be processed by the first clamping unit 40 and the second clamping unit 50, the first fixed column 42 is inserted into the first locking groove 111, the second fixed column 43 is inserted into the second locking groove 112, the third fixed column 52 is inserted into the third locking groove 131, and the fourth fixed column 53 is inserted into the fourth locking groove 132, and the control action unit 20 is controlled to work so that the first locking assembly 31 locks the first fixed column 42 in the first locking groove 111, the second locking assembly 32 locks the second fixed column 43 in the second locking groove 112, the third locking assembly 33 locks the third fixed column 52 in the third locking groove 131, and the fourth locking assembly 34 locks the fourth fixed column 53 in the fourth locking groove 132, so as to realize the locking of the first clamping unit 40 and the second clamping unit 50. In the gap of the clamp for production and processing, the clamping of a plurality of small parts to be processed is carried out on other first clamping units 40 and second clamping units 50, and after the processing is completed, the first clamping unit 40 and the second clamping unit 50 loaded with the processed small parts are unloaded, and the first clamping unit 40 and the second clamping unit 50 loaded with the small parts to be processed are replaced, which can maximize the reduction of downtime and improve the processing efficiency.

[0045] In order to ensure that the first fixed column 42 and the second fixed column 43 can be locked at the same time, and the third fixed column 52 and the fourth fixed column 53 can be locked at the same time, please refer to Figure 4 , Figure 5 and Figure 6 , the power unit 20 includes a first cylinder 21 and a second cylinder 22, the first locking assembly 31 and the third locking assembly 33 are connected with the first cylinder 21, the second locking assembly 32 and the fourth locking assembly 34 are connected with the second cylinder 22, the first mounting groove 121 includes a left mounting portion 122, a middle mounting portion 123 and a right mounting portion 124, the left mounting portion 122 and the right mounting portion 124 are symmetrically arranged about the symmetry plane of the middle mounting portion 123, the first locking groove 111 and the third locking groove 131 are in communication with the left mounting portion 122, the second locking groove 112 and the fourth locking groove 132 are in communication with the right mounting portion 124, the first locking groove 111 and the second locking groove 112 are symmetrical about the symmetry plane of the middle mounting portion 123, the third locking groove 131 and the fourth locking groove 132 are symmetrical about the symmetry plane of the middle mounting portion 123, the first locking assembly 31 and the second locking assembly 32 are symmetrically arranged in the left mounting portion 122 and the right mounting portion 124 respectively about the symmetry plane of the middle mounting portion 123, the third locking assembly 33 and the fourth locking assembly 34 are symmetrically arranged in the left mounting portion 122 and the right mounting portion 124 respectively about the symmetry plane of the middle mounting portion 123, the first cylinder 21 is arranged in the middle mounting portion 122 close to the first locking assembly 31 and the third locking assembly 33, the second cylinder 22 is arranged in the middle mounting portion 122 close to the second locking assembly 32 and the fourth locking assembly 34, and the first cylinder 21 and the second cylinder 22 are symmetrical about the symmetry plane of the middle mounting portion 123.

[0046] In order to avoid the situation that the third fixed column 52 is not locked when the first fixed column 42 is locked, and the first fixed column 42 is not locked when the third fixed column 52 is locked, the first locking assembly 31 and the third locking assembly 33 are connected with the first cylinder 21 through the first swing ring, when one of the first fixed column 42 and the third fixed column 52 is locked, the locking force is transmitted to the first swing ring to make the first swing ring deflect and displace, and the locking assembly corresponding to the other fixed column which is not locked is automatically close to the fixed column and transmit the locking force.

[0047] Similarly, in order to avoid the situation that the fourth fixed column 53 is not locked when the second fixed column 43 is locked, and the second fixed column 43 is not locked when the fourth fixed column 53 is locked, the second locking assembly 32 and the fourth locking assembly 34 are connected with the second cylinder 22 through a second swing ring, when one of the second fixed column 43 and the fourth fixed column 53 is locked, the locking force is transmitted to the second swing ring to make the second swing ring deflect and displace, and the locking assembly corresponding to the other fixed column that is not locked is automatically close to the fixed column and transmit the locking force.

[0048] The third locking assembly 33 can adopt a similar structure to the first locking assembly 31, please refer to Figure 4 and Figure 5 , the third locking assembly 33 includes a third fixed part 331, a third driving part 332 and a third action part 333, the third fixed part 331 is fixed in the left mounting part 122 close to the position of the third locking groove 131, the third driving part 332 is arranged in the left mounting part 122 close to the position of the first cylinder 21, the third action part 333 is arranged in the left mounting part 122 corresponding to the position of the third fixed part 331 close to the side of the third locking groove 131, one end of the third driving part 332 is connected with the first cylinder 21, the other end of the third driving part 332 is connected with one end of the third action part 333, the other end of the third action part 333 is connected with the middle part of the third fixed part 331, the side of the third action part 333 close to the third locking groove 131 is provided with a third locking protrusion 3331, the side wall of the third fixed column 52 is provided with a third locking recess 521, the third locking protrusion 3331 and the third locking recess 521 are matched with each other, so that when the first cylinder 21 drives the third driving part 332 to move, the third action part 333 can be driven to rotate around the middle part of the third fixed part 331, the third locking protrusion 3331 is topped into the third locking recess 521, and the third fixed column 52 is locked in the third locking groove 131.

[0049] Please refer to Figure 4 , Figure 5 and Figure 9The power unit 20 further comprises a first connecting piece 23 and a first connecting column 24. The first connecting piece 23 is connected with the first cylinder 21. Three connecting plates 231 are sequentially arranged from top to bottom on the side wall close to the first driving member 312 and the third driving member 332. A first connecting hole 232 is arranged at the middle part of each connecting plate 231. A first swing wheel 6 is arranged in the first connecting hole 232. The first driving member 312 is arranged between the lower two connecting plates 231 at the end away from the first action member 313. The third driving member 332 is arranged between the upper two connecting plates 231 at the end away from the third action member 333. The first connecting column 24 sequentially passes through the first swing wheel 6, the third driving member 332, the first swing wheel 6, the first driving member 312 and the first swing wheel 6 from top to bottom, and connects the first driving member 312 and the third driving member 332 with the first connecting piece 23.

[0050] The fourth locking assembly 34 and the second locking assembly 32 are connected with the second cylinder 32 by the same structure as that of the first driving member 312 and the third driving member 332 connected with the first connecting piece 23, which will not be described herein.

[0051] The second clamping main plate 51 can adopt the same or similar structure as the first clamping main plate 51. That is, the second locking surface 13 is further provided with a third anti-error hole and a fourth anti-error hole. The distance from the third anti-error hole to the third locking groove is not equal to the distance from the fourth anti-error hole to the fourth locking groove. A third positioning column is arranged on the second fixing surface 511 at a position corresponding to the third anti-error hole. A fourth positioning column is arranged on the second fixing surface 511 at a position corresponding to the fourth anti-error hole. The third positioning column is inserted into the third anti-error hole, and the fourth positioning column is inserted into the fourth anti-error hole, so as to avoid the situation that the second clamping unit 50 is installed reversely, and reduce the operation difficulty of the operator.

[0052] In actual use, in order to protect the power unit 20 and the locking unit 30, prolong the service life, and prevent external interference from causing failure, please refer to Figure 1 、 Figure 2 and Figure 3 The clamp further comprises a cover plate 60. The cover plate 60 is fixed on the first mounting surface 12 at a position corresponding to the first mounting groove 121. The air inlets of the first cylinder 21 and the second cylinder 22 are arranged on the cover plate 60. The cover plate 60 can be a transparent acrylic plate, so as to facilitate the visualization of the internal structure and the maintenance.

[0053] Use process: please refer to Figure 10After the substrate 10 is fixed on the four-axis bridge plate 110, the first clamping unit 40 and / or the second clamping unit 50 is inserted into the substrate 10 after the product to be processed is loaded into the first clamping unit 40 and / or the second clamping unit 50, the air cylinder is controlled to intake air, and the locking assembly is driven to lock the fixing column in the corresponding locking groove, so that the first clamping unit 40 and / or the second clamping unit 50 is locked and fixed on the substrate 10. After the product processing is completed, the air cylinder is controlled to drive the locking assembly to release the locking of the corresponding fixing column, the first clamping unit 40 and / or the second clamping unit 50 loaded with the processed product is taken out, the processing gap is loaded into the first clamping unit 40 and / or the second clamping unit 50 to be locked to the substrate 10, and the next round of processing is entered.

[0054] The clamp suitable for multi-station clamping small part processing of the present application is characterized in that a first installation groove is arranged on the first installation surface of the substrate, a first locking groove and a second locking groove communicated with the first installation groove are arranged at both ends of the first locking surface of the substrate, the first locking assembly is arranged in the first installation groove and located at the position close to the first locking groove on the side of the power unit, the second locking assembly is arranged in the first installation groove and located at the position close to the second locking groove on the other side of the power unit, the first fixed column inserted into the first locking groove and the second fixed column inserted into the second locking groove are arranged on the first fixing surface of the first clamping main plate, the first clamping unit is locked and fixed on the substrate by the power unit driving the first locking assembly and the second locking assembly, the clamping efficiency is high, the accurate repeated positioning can be realized, the product quality stability is good, and the first clamping unit is convenient to disassemble and replace, the downtime can be maximally reduced, and the processing efficiency is ensured.

[0055] The present application has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples for implementing the present application. It must be pointed out that the disclosed embodiments do not limit the scope of the present application. On the contrary, the changes and decorations made without departing from the spirit and scope of the present application are within the scope of the patent protection of the present application.

Claims

1. A fixture suitable for multi-station clamping and machining of small parts, characterized in that, include: The substrate includes a first locking surface and a first mounting surface, the first locking surface and the first mounting surface are perpendicular, the two ends of the first locking surface are respectively provided with a first locking groove and a second locking groove, the first mounting surface is provided with a first mounting groove, and the first locking groove and the second locking groove are both connected to the first mounting groove; A power unit is disposed in the middle of the first mounting slot; A locking unit, comprising a first locking component and a second locking component, wherein the first locking component is disposed within the first mounting groove on one side of the power unit near the first locking groove, and the second locking component is disposed within the first mounting groove on the other side of the power unit near the second locking groove; both the first locking component and the second locking component are connected to the power unit; and A first clamping unit for simultaneously clamping multiple small parts to be processed, the first clamping unit includes a first clamping main board, the first clamping main board includes a first fixing surface, a first fixing post is provided on the first fixing surface at a position corresponding to the first locking groove, and a second fixing post is provided on the first fixing surface at a position corresponding to the second locking groove. The first fixing post is inserted into the first locking groove, and the second fixing post is inserted into the second locking groove. The first locking assembly locks the first fixing post in the first locking groove under the action of the power unit, and the second locking assembly locks the second fixing post in the second locking groove under the action of the power unit.

2. The fixture for multi-station clamping of small parts as described in claim 1, characterized in that, The first locking assembly includes a first fixing member, a first driving member, and a first actuating member. The first fixing member is fixed in the first mounting groove near the first locking groove. The first driving member is located in the first mounting groove near the power unit. The first actuating member is located in the first mounting groove at a position corresponding to the side of the first fixing member near the first locking groove. One end of the first driving member is axially connected to the power unit, and the other end of the first driving member is axially connected to one end of the first actuating member. The other end of the first actuating member is axially connected to the middle part of the first fixing member. The side of the first actuating member near the first locking groove has a first locking protrusion, and the side wall of the first fixing post has a first locking recess. The first locking protrusion and the first locking recess cooperate with each other.

3. A fixture for multi-station clamping of small parts as described in claim 2, characterized in that, The second locking assembly includes a second fixing member, a second driving member, and a second actuating member. The second fixing member is fixed in the first mounting groove near the second locking groove. The second driving member is located in the first mounting groove near the power unit. The second actuating member is located in the first mounting groove at a position corresponding to the side of the second fixing member near the second locking groove. One end of the second driving member is axially connected to the power unit, and the other end of the second driving member is axially connected to one end of the second actuating member. The other end of the second actuating member is axially connected to the middle part of the second fixing member. The side of the second actuating member near the second locking groove has a second locking protrusion, and the side wall of the second fixing post has a second locking recess. The second locking protrusion and the second locking recess cooperate with each other.

4. A fixture for multi-station clamping of small parts as described in claim 2, characterized in that, The first fixing post includes a first positioning cylindrical part and a first locking cone part. The first positioning cylindrical part and the first locking cone part are connected. The outer diameter of the first positioning cylindrical part is equal to the inner diameter of the first locking groove. The first locking recess is provided on the side wall of the first locking cone part.

5. A fixture for multi-station clamping of small parts as described in claim 1, characterized in that, The first locking surface is also provided with a first anti-misalignment hole and a second anti-misalignment hole. The distance from the first anti-misalignment hole to the first locking groove is not equal to the distance from the second anti-misalignment hole to the second locking groove. A first positioning post is provided on the first fixing surface at the position corresponding to the first anti-misalignment hole, and a second positioning post is provided on the first fixing surface at the position corresponding to the second anti-misalignment hole. The first positioning post is inserted into the first anti-misalignment hole, and the second positioning post is inserted into the second anti-misalignment hole.

6. A fixture for multi-station clamping of small parts as described in claim 1, characterized in that, The first clamping unit further includes a plurality of first clamping members and a plurality of first positioning members. The first clamping main board further includes a first clamping surface perpendicular to the first fixing surface and a first moving surface parallel to the first fixing surface. The first clamping surface is provided with a plurality of receiving slots. The first moving surface is provided with a plurality of clamping slots at positions corresponding to the plurality of receiving slots. Each clamping slot is connected to its corresponding receiving slot. The plurality of clamping slots, the plurality of first clamping members, and the plurality of first positioning members correspond one-to-one. Each first clamping member includes a clamping part and a locking part. The clamping part is connected to the locking part belonging to the same first clamping member. The clamping part is disposed in its corresponding receiving slot. One end of the locking part passes through its corresponding clamping slot and is connected to the clamping part belonging to the same first clamping member. Each first positioning member is fixed on the first clamping surface and abuts against the clamping part of its corresponding first clamping member.

7. A fixture for multi-station clamping of small parts as described in claim 1, characterized in that, The locking unit further includes a third locking component and a fourth locking component. The base plate further includes a second locking surface that is parallel to the first locking surface. The two ends of the second locking surface are respectively provided with a third locking groove and a fourth locking groove. The third locking groove and the fourth locking groove are both connected to the first mounting groove. The third locking component is disposed in the first mounting groove at a position close to the third locking groove on one side of the power unit. The fourth locking component is disposed in the first mounting groove at a position close to the fourth locking groove on the other side of the power unit. Both the third locking component and the fourth locking component are connected to the power unit.

8. A fixture for multi-station clamping of small parts as described in claim 7, characterized in that, It also includes a second clamping unit, which includes a second clamping main board and a second fixing surface. A third fixing post is provided on the second fixing surface at a position corresponding to the third locking groove, and a fourth fixing post is provided on the second fixing surface at a position corresponding to the fourth locking groove. The third fixing post is inserted into the third locking groove, and the fourth fixing post is inserted into the fourth locking groove. The third locking assembly locks the third fixing post in the third locking groove under the action of the power unit, and the fourth locking assembly locks the fourth fixing post in the fourth locking groove under the action of the power unit.

9. A fixture for multi-station clamping of small parts as described in claim 8, characterized in that, The power unit includes a first cylinder and a second cylinder. The first locking assembly and the third locking assembly are both connected to the first cylinder. The second locking assembly and the fourth locking assembly are both connected to the second cylinder. The first mounting slot includes a left mounting portion, a middle mounting portion, and a right mounting portion. The left mounting portion and the right mounting portion are symmetrically arranged about the middle mounting portion. The first locking slot and the third locking slot are both connected to the left mounting portion. The second locking slot and the fourth locking slot are both connected to the right mounting portion. The first locking slot and the second locking slot are symmetrically arranged about the middle mounting portion. The third locking slot and the fourth locking slot are symmetrically arranged about the middle mounting portion. The locking grooves are symmetrically arranged about the intermediate mounting portion. The first locking component and the second locking component are symmetrically arranged about the left mounting portion and the right mounting portion, respectively. The third locking component and the fourth locking component are symmetrically arranged about the left mounting portion and the right mounting portion, respectively. The first cylinder is located in the intermediate mounting portion near the first locking component and the third locking component. The second cylinder is located in the intermediate mounting portion near the second locking component and the fourth locking component. The first cylinder and the second cylinder are symmetrically arranged about the intermediate mounting portion.

10. A fixture for multi-station clamping of small parts as described in claim 9, characterized in that, The first locking assembly and the third locking assembly are connected to the first cylinder via a first swing ring, and the second locking assembly and the fourth locking assembly are connected to the second cylinder via a second swing ring.

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