CN111531374A

CN111531374A - Modular piezoelectric driving micro-feeding tool rest

Info

Publication number: CN111531374A
Application number: CN202010318604.6A
Authority: CN
Inventors: 李东明; 胡红英; 高天一; 徐婧文
Original assignee: Dalian Minzu University
Current assignee: Dalian Minzu University
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-08-14

Abstract

The modular micro-feeding tool rest comprises a tool rest frame module, a driving element and displacement detection element bearing base body module, a tool base module and a guide mechanism module, wherein all the modules are connected through screws. The method is characterized in that: each module part can be flexibly disassembled and replaced. Piezoelectric drive among the prior art advances the knife rest a little, adopts the global design processing mode mostly, and each part structure of knife rest becomes the integration model, can only satisfy specific processing requirement, if need increase knife rest rigidity or output displacement in the use, just must redesign global knife rest structure, consuming time and wasting power is unfavorable for the commonality and uses widely. The invention adopts the modularized concept for each main part of the tool rest, each module is detachable, can be assembled and can be repeatedly used, the invention has the performance of flexibly changing the structural rigidity, the output displacement and the like of the tool rest, saves the time of the structural design of the tool rest and meets the requirements of wide application in ultraprecise machining, micro electro mechanical systems and optical technologies.

Description

Modular piezoelectric driving micro-feeding tool rest

Technical Field

The invention relates to a piezoelectric driving micro-feeding tool rest.

Background

With the rapid development of modern science and technology, the technical fields of microelectronics, aerospace, optics, biomedicine and the like have higher requirements on the processing precision, surface quality and processing efficiency of products, and the precision and ultra-precision processing technology becomes an important support for developing and manufacturing high and new technology products and has wide application. The traditional machining method cannot meet the requirement of ultra-precision machining, and a micro-feeding mechanism is added in the design of an ultra-precision machine tool to improve the precision and the rigidity of a machine tool feed system, so that the method is one of effective methods for realizing the ultra-precision machining. The piezoelectric driving type micro-feeding tool rest has the advantages of large cutting force, small cutting heat, high surface quality of a machined part, stability in machining, convenience in control, high production efficiency and the like, and is widely applied to the field of ultra-precision machining. The problems of workpiece machining precision, surface quality and machining efficiency are mainly solved.

The modular piezoelectric micro-feeding tool rest has the advantages that the main parts of the tool rest are modularly separated, the modules are detachable, replaceable and assembled, flexibility in design and application is realized, time and labor are saved, the repeatable utilization rate of parts is increased, and the work efficiency of precision machining is improved.

Disclosure of Invention

The invention aims to provide a modularized micro-feeding tool rest capable of being flexibly assembled and disassembled aiming at the defects and the application prospect, and the technical scheme of the invention is realized as follows: the utility model provides a little feed knife rest of modularization piezoelectricity drive, common characterized in that: the tool holder comprises a tool holder frame module, a base body module, a tool base module and a guide mechanism module, wherein the tool holder frame module, the base body module, the tool base module and the guide mechanism module are independently designed and mutually connected. The tool rest frame is a three-side frame with an upward opening, a group of through holes iii are correspondingly arranged on the side surfaces of two vertical frames of the three-side frame, screw holes iii are respectively arranged on the upper top surface, screw holes iv are arranged above the side surface of the vertical frame on the left side, screw holes v are arranged in the middle of a transverse frame of the three-side frame, and a through hole ii is arranged on the left side. The base body module of the bearing element is a square block, two sides of the square block are respectively provided with a group of screw holes vi, the middle of the square block is provided with a vertical square hole cutter groove, a rectangular groove is formed in the left side of the square block, and a through hole i vertically penetrates through the base body module on the rectangular groove. The position of the screw hole vi corresponds to the position of a through hole iii on the two vertical frames of the tool rest frame. The cutter base is internally provided with a square cutter groove, a baffle is fixed at the lower left side, the front surface of the cutter base is provided with vertically arranged screw holes ii, and two side surfaces of the cutter base are respectively provided with horizontally arranged screw holes i. The thick side face of the guide mechanism module is provided with vertically arranged screw holes iv, and the thin side face is provided with transversely arranged through holes v. The screw holes iv and v correspond to the screw holes iii and i. The guiding mechanism module is a double-parallel flexible hinge mechanism. The piezoelectric ceramic sensor and the capacitance sensor are both provided with external leads.

The assembling method of the modular micro-feeding tool rest is characterized by comprising the following steps:

1) inserting a diamond cutter (6) into the square-hole cutter groove (7) in the cutter base (3), and fastening the diamond cutter (6) by using a screw v (19) through a screw hole ii (21) vertically arranged on the front surface of the cutter base (3).

2) Two screws iv (18) are used for penetrating through the thin-wall end through holes v (28) of the guide mechanism (4) to fasten the guide mechanism (4) in the screw holes i (20) on the side surface of the cutter base (3), and the other guide mechanism (4) is fastened on the other side of the cutter base (3) by the same method.

3) And (2) placing the bearing substrate (2) in the tool rest frame (1), enabling the notches of the long groove (8) and the rectangular groove (11) to face upwards, and fastening the bearing substrate (2) and the tool rest frame (1) in a screw hole vi (26) by using a screw ii (16) through a through hole iii (23) on the side surface of two vertical frames of the tool rest frame (1).

4) And screws iii (17) penetrate through vertical through holes iv (27) of thick-wall ends of the guide mechanism (4) and are fastened in vertical screw holes iii (22) at two vertical upper ends of the tool rest frame (1).

5) And placing the capacitive sensor (13) in the upper surface of the rectangular groove (11) through a through hole ii (14), wherein the top end of the capacitive sensor (13) is contacted with the baffle plate (5), and pressing the capacitive sensor (13) by a screw i (15) through a screw hole iv (24) on the side surface of the tool rest frame (1) and a screw hole vii (29) on the side surface of the bearing base body (2).

6) And placing the piezoelectric ceramic sensor (9) in the long groove (8), enabling the upper part of the piezoelectric ceramic sensor to be tightly attached to the lower bottom surface of the cutter base (3), and screwing the piezoelectric ceramic sensor in the screw hole v (25) by using a hexagon screw (10).

According to the modularized piezoelectric driving micro-feeding tool rest adopting the technical scheme, the micro-feeding tool rest with different performances can be assembled according to different processing requirements through a modularized idea. The flexible hinge guide mechanisms with different sizes can be selected to change the rigidity and the output displacement of the tool rest. Different types of cutters can be selected to meet different cutting materials and cutting processes. Different types of piezoelectric ceramic drivers can be selected to provide different output forces. Different displacement sensors can be selected, and the detection effect with higher precision is achieved. The modular micro-feeding tool rest saves materials, simplifies the design process, increases the reuse rate of parts of each part of the tool rest, and improves the working efficiency.

Drawings

Fig. 1 is a perspective view of a modular micro-feeding tool holder of the present invention.

Fig. 2 is a left-hand view of fig. 1 with parts broken away.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a left side view of fig. 1.

Fig. 5 is a perspective view of a three-sided knife rest frame.

Fig. 6 is a perspective view of the drive element and displacement sensing element carrying matrix module.

Fig. 7 is an opposite perspective view of fig. 6.

Fig. 8 is a perspective view of the tool base module.

Fig. 9 is an opposite perspective view of fig. 8.

Fig. 10 is a perspective view of the left module of the guide mechanism.

Fig. 11 is a perspective view of the right module of the guide mechanism.

In the figure: 1. a tool holder frame; 2. a load bearing substrate; 3. a tool base; 4. a guide mechanism; 5. a baffle plate; 6. a diamond cutter; 7. a square hole cutter groove; 8. a long groove; 9. a piezoelectric ceramic sensor; 10. a hex screw; 11. a rectangular groove; 12. a through hole i; 13. a capacitive sensor; 14. a through hole ii; 15. a screw i; 16. screw ii; 17. a screw iii; 18. a screw iv; 19. a screw v; 20. a screw hole i; 21. screw hole ii; 22. a screw hole iii; 23. a through hole iii; 24. a screw hole iv; 25. a screw hole v; 26. a screw hole vi; 27. iv, a through hole; 28. v, a through hole; 29. screw hole vii.

Detailed Description

The structure adopted by the invention is the modularized micro-feeding tool rest, the micro-feeding tool rest is separated into four modules, the flexible assembly of the micro-feeding tool rest is realized, and different processing requirements can be met by replacing parts of each module. The modular tool rest comprises a tool rest frame module 1, a base module 2 for carrying driving elements and displacement detecting elements, a tool base module 3 and a guide mechanism module 4, which are independently designed and mutually connected. The modules are connected through screws, and the sizes of the parts can be selected according to different processing requirements. In this case, the tool frame 1 is a three-side frame with an upward opening, two vertical frame sides of the three-side frame are respectively provided with a group of through holes iii-23 corresponding to each other, screw holes iii-22 are respectively arranged on the upper top surface, screw holes iv-24 are arranged above the vertical frame side on the left side, the middle part of a transverse frame of the three-side frame is provided with screw holes v-25, and the left side is provided with through holes ii-14. The base body module 2 of the bearing element is a square block, two sides of the square block are respectively provided with a group of screw holes vi-26, the middle of the square block is provided with a vertical square hole cutter groove 8, the left side of the square block is provided with a rectangular groove 11, and through holes i-12 vertically penetrate through the base body module 2 on the rectangular groove 11. The positions of the screw holes vi-26 correspond to the positions of through holes iii-23 on two vertical frames of the tool rest frame. The cutter base 3 is internally provided with a square cutter groove 7, the left lower side of the cutter base is fixed with a baffle 5, the front surface of the cutter base is provided with vertically arranged screw holes ii-21, and two side surfaces of the cutter base are respectively provided with horizontally arranged screw holes i-20. The guiding mechanism module 4 is provided with vertically arranged screw holes iv-27 on the thick side and transversely arranged through holes v-28 on the thin side. Screw holes iv-27 and through holes v-28 correspond to screw holes iii-22 and screw holes i-20. The guiding mechanism module 4 is a double parallel flexible hinge mechanism. The piezoelectric ceramic sensor 9 and the capacitance sensor 13 are both provided with external leads.

The assembling method of the modular micro-feeding tool rest comprises the following steps: inserting a diamond cutter 6 into a square-hole cutter groove 7 in the cutter base 3, and fastening the diamond cutter 6 by using screws v-19 through screw holes ii-21 vertically arranged on the front surface of the cutter base 3; two screws iv-18 are used for penetrating through the thin-wall end through holes v-28 of the guide mechanism 4 to fasten the guide mechanism 4 in the screw holes i-20 on the side surface of the cutter base 3, and the other guide mechanism 4 is fastened on the other side of the cutter base 3 by the same method; placing the bearing substrate 2 in the tool rest frame 1, enabling the notches of the long groove 8 and the rectangular groove 11 to be upward, and fastening the bearing substrate 2 with the tool rest frame 1 in screw holes vi-26 by screws ii-16 through holes iii-23 on the side surfaces of two vertical frames of the tool rest frame 1; screws iii-17 penetrate through vertical through holes iv-27 of thick-wall ends of the guide mechanism 4 and are fastened in vertical screw holes iii-22 at two vertical upper ends of the tool rest frame 1; placing a capacitive sensor 13 in the upper surface of the rectangular groove 11 through holes ii-14, wherein the top end of the capacitive sensor 13 contacts the baffle 5, and tightly pushing the capacitive sensor 13 by screws i-15 through screw holes iv-24 on the side surface of the tool rest frame 1 and screw holes vii-29 on the side surface of the bearing substrate 2; the piezoelectric ceramic sensor 9 is arranged in the long groove 8, the upper part of the piezoelectric ceramic sensor is tightly attached to the lower bottom surface of the cutter base 3, and the piezoelectric ceramic sensor is screwed in the screw hole v-25 by a hexagon screw 10.

In conclusion, the modular micro-feeding tool rest mechanism adopts a modular concept, realizes flexible assembly of parts of the tool rest, can meet different processing requirements, and can be widely applied to ultra-precision processing, micro-electro-mechanical systems and optical technologies.

The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.

Claims

1. The utility model provides a little feed knife rest of modularization piezoelectricity drive, common characterized in that: the tool holder comprises a tool holder frame module (1), a base body module (2), a tool base module (3) and a guide mechanism module (4), wherein the tool holder frame module and the base body module are independently designed and mutually connected.

2. The modular micro-feed tool holder of claim 1, wherein: the tool rest frame (1) is a three-side frame with an upward opening, a group of through holes iii (23) corresponding to each other are arranged on two vertical frame side faces of the three-side frame, screw holes iii (22) are respectively arranged on the upper top faces of the three-side frame, screw holes iv (24) are arranged above the vertical frame side face on the left side, a screw hole v (25) is arranged in the middle of a transverse frame of the three-side frame, and a through hole ii (14) is arranged on the left side.

3. The modular micro-feed tool holder of claim 1, wherein: the base body module (2) of the bearing element is a square block, two sides of the square block are respectively provided with a group of screw holes vi (26), the middle of the square block is provided with a vertical square hole cutter groove (8), the left side of the square block is provided with a rectangular groove (11), and a through hole i (12) vertically penetrates through the base body module (2) on the rectangular groove (11); the positions of the screw holes vi (26) correspond to the positions of through holes iii (23) in the two vertical frames of the cutter frame (1).

4. The modular micro-feed tool holder of claim 1, wherein: the cutter base (3) is internally provided with a square cutter groove (7), a baffle (5) is fixed at the lower left side, the front surface of the cutter base (3) is provided with vertically arranged screw holes ii (21), and two side surfaces are respectively provided with horizontally arranged screw holes i (20).

5. The modular micro-feed tool holder of claim 1, wherein: the thick side surface of the guide mechanism module (4) is provided with vertically arranged screw holes iv (27), and the thin side surface is provided with transversely arranged through holes v (28); the screw hole iv (27) and the through hole v (28) correspond to the screw hole iii (22) and the screw hole i (20).

6. The modular micro-feed tool holder of claim 1, wherein: the guide mechanism module (4) is a double-parallel flexible hinge mechanism.

7. The modular micro-feed tool holder of claim 1, wherein: and the piezoelectric ceramic sensor (9) and the capacitance sensor (13) are both provided with external leads.

8. The method of assembling a modular micro-feeding blade holder according to any of claims 1 to 7, comprising the steps of:

1) inserting a diamond cutter (6) into a square-hole cutter groove (7) in the cutter base (3), and fastening the diamond cutter (6) by using a screw v (19) through a screw hole ii (21) vertically arranged on the front surface of the cutter base (3);

2) two screws iv (18) penetrate through thin-wall end through holes v (28) of the guide mechanism (4) to fasten the guide mechanism (4) in screw holes i (20) on the side face of the cutter base (3), and the other guide mechanism (4) is fastened on the other side of the cutter base (3) in the same way;

3) placing the bearing substrate (2) in the tool rest frame (1), enabling the notches of the long groove (8) and the rectangular groove (11) to face upwards, and fastening the bearing substrate (2) and the tool rest frame (1) in screw holes vi (26) through holes iii (23) on the side surfaces of two vertical frames of the tool rest frame (1) by using screws ii (16);

4) screws iii (17) penetrate through vertical through holes iv (27) of thick-wall ends of the guide mechanism (4) and are fastened in vertical screw holes iii (22) at two vertical upper ends of the tool rest frame (1);

5) placing a capacitive sensor (13) in the upper surface of the rectangular groove (11) through a through hole ii (14), wherein the top end of the capacitive sensor (13) is contacted with the baffle plate (5), and tightly jacking the capacitive sensor (13) with a screw i (15) through a screw hole iv (24) on the side surface of the tool rest frame (1) and a screw hole vii (29) on the side surface of the bearing base body (2);