CN217571863U

CN217571863U - Machining clamp for drilling lever parts

Info

Publication number: CN217571863U
Application number: CN202220665919.2U
Authority: CN
Inventors: 汪梦寒; 王安斌; 鞠龙华; 顾晓菡; 岳修平; 邬奇睿
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-10-14
Anticipated expiration: 2032-03-24

Abstract

The utility model relates to a processing fixture for drilling of lever parts, which comprises a fixture body (1), a support plate (101) fixedly connected to the upper surface of the fixture body (1), and a vertical plate fixedly connected to the edge of the upper surface of the fixture body (1), wherein the upper end of the vertical plate is provided with a drilling template (4), and the drilling template (4) is connected with a drilling mechanism; the clamp body (1) is provided with a first stud (2), and the first stud (2) is connected with an external control clamping mechanism; the clamp body (1) is provided with a guide groove block (308), and the guide groove block (308) is connected with a clamping mechanism. Compared with the prior art, the utility model discloses a treat the complete location of six degrees of freedom of processing work piece, ensured the stability of work piece in the course of working to machining precision and efficiency have greatly been improved.

Description

Machining clamp for drilling lever parts

Technical Field

The utility model relates to a add clamping apparatus technical field, especially relate to a add clamping apparatus for drilling of lever part.

Background

In the technical field of machining fixtures, a tool fixture is widely applied to machining in factories, and rough machining or finish machining of a workpiece can be realized only by fixing the position of the workpiece by a general fixture during machining of the workpiece.

The lever part is a common part in the field of machinery, the lever part is used for transmitting driving force and generally comprises a fulcrum, a power arm and a resistance arm, and in different application occasions, the size and the shape of a lever are different, so that the lever part is often required to be processed at different positions, such as punching and the like, and the lever part is often required to be fixed on a machine tool through a lever clamp to avoid low precision caused by movement in processing. At present, a plurality of lever parts are small in size and complex in structural shape, and the precision of the transmission system is influenced by the size precision, the geometric structural shape and the mutual position precision of the lever parts. The existing lever part clamp has the defects of too complex positioning scheme, inaccurate positioning, too many positioning elements and auxiliary elements and the like.

Chinese patent CN202023179955.8 discloses a special fixture for drilling lever parts, which comprises a fixture main body, a positioning plate, a rotary pressing plate, a mandrel and a fixed drilling template; the positioning plate is arranged on the lower portion of the left side of the front end face of the clamp main body, and an A-shaped fixing positioning pin is arranged at the right end of the positioning plate; the mandrel is arranged above the positioning plate, one end of the mandrel is connected with the clamp body, and the other end of the mandrel is connected with the lathe lever part; the fixed drill jig plate is arranged above the mandrel, the rear end of the fixed drill jig plate is fixedly connected with the upper end of the clamp main body, the rotating pressing plate is arranged on the right side of the mandrel, and the rotating pressing plate is connected with the clamp main body through a double-end stud. The utility model adopts the plane, the mandrel and the support nail combined positioning scheme to realize the complete positioning of the lathe lever part by taking the side surface of the lathe lever part as the positioning reference; the spiral pressing plate is adopted for clamping, the structure is simple, the machining precision is guaranteed, the labor intensity is reduced, and the machining efficiency is improved. However, the clamp can only be used for the lathe lever part CA6140, the ends of the power arm and the resistance arm are both square or at least one side of the side surface is a plane, the contact between the positioning pin and the side surface is used for limiting, and the clamp cannot be used when the power arm and the resistance arm are smooth and round or arc-shaped.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a processing anchor clamps that is used for lever part drilling that increase machining efficiency that can be very big in order to solve above-mentioned technical problem.

The purpose of the utility model can be realized through the following technical scheme: a processing clamp for drilling a lever part comprises a clamp body, a supporting plate fixedly connected to the upper surface of the clamp body, and a vertical plate fixedly connected to the edge of the upper surface of the clamp body, and is characterized in that a drilling template is arranged at the upper end of the vertical plate and connected with a drilling mechanism;

the clamp body is provided with a first stud which is connected with an external control clamping mechanism;

the fixture body is provided with a guide groove block, and the guide groove block is connected with a clamping mechanism.

Further, the drilling mechanism comprises an original drilling opening formed in the drilling template, a bushing for the drill sleeve is fixedly connected to the inner wall of the original drilling opening, and a quick-change drill sleeve is connected to the inner wall of the bushing for the drill sleeve in a sliding mode.

Furthermore, a drill bushing screw is further arranged on the drill plate and is clamped with the quick-change drill bushing.

Furthermore, one end of the drilling template is fixed at the upper end of the vertical plate through an inner hexagonal socket head cap screw and a cylindrical pin.

Further, the external control clamping mechanism comprises a movable pressing plate, a sliding opening is formed in the movable pressing plate, the upper end of the first double-ended stud penetrates through the sliding opening to be connected with a first hexagon nut, the lower end of the first double-ended stud penetrates through a blocking nut to be fixed on the clamp body, a first spring is sleeved between the movable pressing plate and the blocking nut, one end, far away from the first double-ended stud, of the movable pressing plate is connected with a screw rod, and one end, far away from the clamp body, of the screw rod is fixedly connected with a first star-shaped handle.

Further, the sliding opening arranged on the movable pressing plate is larger than the diameter of the first stud.

Furthermore, the clamping mechanism comprises a second stud arranged in the guide groove block, two ends of the second stud are respectively connected with the movable v-shaped block and the second star-shaped handle, and a hexagonal thin nut and a second spring are arranged in the middle of the second stud. Wherein the movable v-shaped block can slide in the guide groove.

Furthermore, a stop block is arranged on one side of the guide groove block, and the second spring is sleeved on the second stud and is positioned between the stop block on one side of the guide groove block and the hexagonal thin nut.

Furthermore, the left side and the right side of the upper surface of the fixture body are provided with opening ear seats.

Furthermore, the upper surface of the supporting plate is fixedly connected with a positioning pin, and the upper surface of the clamp body is fixedly connected with an anti-reverse pin.

During the use, through the setting of external control clamping mechanism, successfully realized treating the section of processing the work piece and pressing from both sides tightly in the outside department of bushing plate, and because the setting of first spring for it resets to move the clamp plate and change, successfully realized treating that quick, nimble treating is pressed from both sides tightly and is released the processing work piece, the structure sets up succinctly, practical, through bearing plate, locating pin, activity V-arrangement piece, successfully realized treating the complete positioning of six degrees of freedom of processing the work piece, ensured the stability of work piece in the course of working, thereby greatly improved the machining precision.

Compared with the prior art, the utility model has the advantages of it is following:

1. the drilling mechanism is arranged, the drill plate, the bushing for the drill bushing, the quick-change drill bushing and the like are cooperated together, the quick-change drill bushing can be replaced easily and quickly, the quick-change drill bushing with different apertures can be replaced easily and quickly, the quick-fit cutter can be quickly matched with the workpiece to be machined, and the machining efficiency is greatly improved.

2. The setting of outer accuse clamping mechanism through the common cooperation of removing clamp plate, screw rod, first star handle etc. has utilized the screw rod and has removed the screw thread connection structure of clamp plate, has successfully realized treating the section of processing the work piece in the outside department of bushing plate and has pressed from both sides tightly, and because the setting of first spring for remove the clamp plate and change and reset, has successfully realized that quick, nimble treating the clamp of processing the work piece tightly with relieve, the structure sets up succinctly, the practicality, the operation of being convenient for, very big improvement machining efficiency.

3. The clamping mechanism is arranged, the second stud and the movable V-shaped block are cooperatively used, the threaded connection structure of the second stud, the movable V-shaped block, the second star-shaped handle and the hexagonal thin nut is utilized, clamping and fixing of a workpiece to be processed are achieved, flexible installation and disassembly of all components are successfully achieved, maintenance in the later-stage use process of the clamp is more convenient, and the service life of the clamp is prolonged.

4. Through the cooperation of the bearing plate, the positioning pin and the movable V-shaped block, the complete positioning of six degrees of freedom of the workpiece to be processed is successfully realized, the stability of the workpiece in the processing process is ensured, and the processing precision is greatly improved.

Drawings

FIG. 1 is a front view of the present invention, illustrating a machining fixture for drilling a lever part;

FIG. 2 is a side view of the present invention, illustrating a machining fixture for drilling a lever part;

fig. 3 is a top view of the machining fixture for drilling lever parts according to the present invention;

fig. 4 is a schematic view of the connection between the first stud and the movable platen in the machining fixture for drilling the lever component of the present invention.

In the figure: 1. a clamp body; 101. a support plate; 102. positioning pins; 103. anti-reverse pin; 2. a first stud; 201. a first spring; 202. a flat washer; 203. a first hexagonal nut; 204. a screw; 205. moving the pressing plate; 206. a first star-shaped handle; 3. a bushing for a drill bushing; 301. quickly replacing the drill bushing; 302. drilling a sleeve screw; 303. a movable V-shaped block; 304. a hexagonal thin nut; 305. a second spring; 306. a second stud; 307. a second star handle; 308. a guide groove block; 4. drilling a template; 401. a hexagonal socket head screw; 402. and (7) a cylindrical pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all embodiments.

Examples

As shown in fig. 1-4, a machining fixture for drilling a lever part includes a fixture body 1, a support plate 101 fixedly connected to a boss on an upper surface of the fixture body 1, and a vertical plate fixedly connected to an edge of the upper surface of the fixture body 1, where it needs to be added, an opening ear seat is provided in a middle section of each of left and right sides of the upper surface of the fixture body 1, so that the fixture body 1 may be fixedly connected to a workbench of a drilling machine through the opening ear seat, the upper surface of the support plate 101 is fixedly connected with a positioning pin 102, the upper surface of the fixture body 1 is fixedly connected with an anti-back pin 103, an upper end of the vertical plate is fixedly connected with a drilling template 4 through an inner hexagon cylinder head screw 401 and a cylinder pin 402, the drilling template 4 is connected with a drilling mechanism, the upper surface of the fixture body 1 is in threaded connection with a first stud 2, the first stud 2 is connected with an external control clamping mechanism, the right end of the upper surface of the fixture body 1 is fixedly connected with a guide groove block 308, the guide groove block 308 is connected with a clamping mechanism, it needs to be added, a boss is provided on the upper surface of the fixture body 1 (the upper surface of an installation element, the installation element needs to be directly installed on the upper surface of the fixture body, the upper surface, a boss for machining area of the whole fixture body is reduced in machining, and a boss. The bearing plate 101 is located on the boss, the anti-reverse pin 103 and the first stud 2 both penetrate through the boss, and the first stud 2 does not penetrate through the bearing plate 101.

The drilling mechanism comprises an original drill hole formed in a drill plate 4, a drill sleeve bushing 3 is fixedly connected to the inner wall of the original drill hole, a quick-change drill sleeve 301 is slidably connected to the inner wall of the drill sleeve bushing 3, a drill sleeve screw 302 is in threaded connection with the upper surface of the drill plate 4 close to the original drill hole, it needs to be supplemented that a notch is formed in the top of the quick-change drill sleeve 301, and the top of the drill sleeve screw 302 can be clamped with a side protruding portion of the quick-change drill sleeve 301 so as to fix the quick-change drill sleeve 301. When the quick-change drill bushing is replaced, the screw does not need to be screwed out, and the drill bushing can be replaced quickly only by rotating the notch of the quick-change drill bushing to the position opposite to the screw. The setting of drilling mechanism through the common cooperation of bushing 3, quick change drill bushing 301 etc. for bushing plate 4, drill bushing, has utilized quick change drill bushing 301 removable, has successfully realized the quick change drill bushing 301 of simple and easy, quick change different apertures, has realized the processing of the work piece of treating processing of quick fit cutter, very big increase machining efficiency.

The external control clamping mechanism comprises a first hexagon nut 203 which is in threaded connection with the upper end of a first stud 2, a stop nut is in threaded connection with a boss on the upper surface of the clamp body 1 at the lower end of the first stud 2, the first stud 2 is in sliding connection with a movable pressing plate 205, a first spring 201 is sleeved on the position, between the movable pressing plate 205 and the stop nut, of the first stud 2, a flat washer 202 is sleeved on the position, between the movable pressing plate 205 and the first hexagon nut 203, of the first stud 2, a screw 204 is in threaded connection with one end, away from the first stud 2, of the movable pressing plate 205, a first star-shaped handle 206 is fixedly connected with one end, away from the clamp body 1, of the screw 204, and it needs to be stated that a sliding port is formed in the position, where the movable pressing plate 205 is in sliding connection with the first stud 2.

The setting of external control clamping mechanism, through the common cooperation of removing clamp plate 205, screw rod 204, first star handle 206 etc., utilized screw rod 204 and the threaded connection structure who removes clamp plate 205, successfully realized treating the section of processing the work piece and pressing from both sides tightly in the outside department of bushing plate 4, and because the setting of first spring 201, make to remove clamp plate 205 and change and reset, successfully realized that quick, nimble clamp of treating the processing work piece is tight and is released, the structure sets up succinctly, and is practical, and the operation of being convenient for, very big improvement machining efficiency.

The clamping mechanism comprises a second stud 306 arranged in a guide groove block 308, the left end of the second stud 306 is in threaded connection with a movable V-shaped block 303, the second stud 306 is in threaded connection with a hexagonal thin nut 304, the right end of the second stud 306 penetrates through a second star-shaped handle 307 connected with the outside of the guide groove block 308 in a threaded manner, and a second spring 305 is sleeved between the hexagonal thin nut 304 and the inner right side surface of the guide groove block 308 on the second stud 306.

The clamping mechanism is arranged, through the cooperation of the guide groove block 308, the second stud 306, the movable V-shaped block 303 and the like, the threaded connection structure of the second stud 306, the movable V-shaped block 303, the second star-shaped handle 307 and the hexagonal thin nut 304 is utilized, the clamping and fixing of a workpiece to be processed are realized, the flexible installation and disassembly of all components are successfully realized, the later-stage use maintenance of the clamp is more convenient, and the service life of the clamp is prolonged.

Through the cooperation of the support plate 101, the positioning pin 102 and the movable V-block 303, the positioning pin 102 passes through the central hole of the lever part, and the positioning pin 102 is a short pin, so that two degrees of freedom are limited. The support plate 101 is attached to the side of the lever part, and the planar attachment limits three degrees of freedom. The movable V-block 303 contacts the outer circumferential surface of the lever member to restrict one degree of freedom. The lever element is fully constrained in 6 degrees of freedom to achieve full positioning.

The complete positioning of six degrees of freedom of the workpiece to be processed is successfully realized, and the stability of the workpiece in the processing process is ensured, so that the processing precision is greatly improved.

The utility model discloses its functional principle is explained to the following mode of operation of well accessible:

before machining, the clamp is assembled, the first clamp body is installed on a workbench of a drilling machine, and a cutter is adjusted to correspond to the quick-change drill bushing 301;

when the clamp is used, the second star-shaped handle 307 is pulled outwards firstly, so that the movable V-shaped block 303 slides towards the inside of the guide groove block 308, the second spring 305 is extruded, at the moment, a workpiece to be machined is placed on the upper surface of the support plate 101, meanwhile, the positioning pin 102 penetrates through the workpiece, the second star-shaped handle 307 is released, and under the action of the second spring 305, the movable V-shaped block 303 is reset, clamping of the workpiece to be machined is achieved, and the workpiece is centered. The positioning pin 102 passes through the central hole of the lever part, and the positioning pin 102 is a short pin and limits two degrees of freedom. The support plate 101 is attached to the side of the lever part, and the planar attachment limits three degrees of freedom. The movable V-block 303 contacts the outer circumferential surface of the lever member to restrict one degree of freedom. The lever element is fully constrained in 6 degrees of freedom to achieve full positioning.

In an initial state, as a sliding port arranged on the movable pressing plate 205 is larger than the diameter of the first stud 2, the screw 204 is in threaded connection with the movable pressing plate 205, so that the left end of the movable pressing plate 205 is heavier and is integrally low at the left and high at the right, the screw 204 is not in contact with a boss on the upper surface of the clamp body 1 and is in a suspended state, the first star-shaped handle 206 is screwed at the moment, the screw 204 moves downwards, when the movable pressing plate 205 abuts against the boss on the upper surface of the clamp body 1, the movable pressing plate 205 starts to move downwards, and the right end of the movable pressing plate 205 starts to compress the first spring 201, so that the clamping of the section of the workpiece to be processed is realized.

Then the quick-change drill bushing 301 is placed into the bushing 3 for the drill bushing, and the drill bushing screw 302 is screwed, so that the top of the drill bushing screw 302 is clamped with the side protrusion of the quick-change drill bushing 301.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. A machining clamp for drilling a lever part comprises a clamp body (1), a supporting plate (101) fixedly connected to the upper surface of the clamp body (1) and a vertical plate fixedly connected to the edge of the upper surface of the clamp body (1), and is characterized in that a drilling template (4) is arranged at the upper end of the vertical plate, and the drilling template (4) is connected with a drilling mechanism;

the clamp body (1) is provided with a first stud (2), and the first stud (2) is connected with an external control clamping mechanism;

the fixture comprises a fixture body (1), and is characterized in that a guide groove block (308) is arranged on the fixture body (1), and the guide groove block (308) is connected with a clamping mechanism.

2. The machining fixture for drilling the lever part according to the claim 1, characterized in that the drilling mechanism comprises a raw drill hole formed on the drill plate (4), the inner wall of the raw drill hole is fixedly connected with a bushing (3) for a drill sleeve, and the inner wall of the bushing (3) for the drill sleeve is slidably connected with a quick-change drill sleeve (301).

3. The machining clamp for drilling the lever part according to claim 2, wherein a drill bushing screw (302) is further arranged on the drill plate (4), and the drill bushing screw (302) is clamped with a quick-change drill bushing (301).

4. The machining clamp for drilling the lever part according to the claim 1 is characterized in that one end of the drill plate (4) is fixed at the upper end of the vertical plate through a hexagon socket head cap screw (401) and a cylindrical pin (402).

5. The machining clamp for drilling the lever part according to claim 1, wherein the external control clamping mechanism comprises a movable pressing plate (205), a sliding opening is formed in the movable pressing plate (205), the upper end of the first stud (2) penetrates through the sliding opening to be connected with a first hexagon nut (203), the lower end of the first stud (2) penetrates through a stop nut to be fixed on the clamp body (1), a first spring (201) is sleeved between the movable pressing plate (205) and the stop nut, one end, far away from the first stud (2), of the movable pressing plate (205) is connected with a screw rod (204), and one end, far away from the clamp body (1), of the screw rod (204) is fixedly connected with a first star-shaped handle (206).

6. The machining fixture for lever part drilling according to claim 5, characterized in that the sliding opening provided on the moving pressure plate (205) is larger than the diameter of the first stud (2).

7. The machining clamp for drilling the lever part according to the claim 1 is characterized in that the clamping mechanism comprises a second stud (306) arranged in a guide groove block (308), the two ends of the second stud (306) are respectively connected with a movable v-shaped block (303) and a second star-shaped handle (307), and a hexagonal thin nut (304) and a second spring (305) are arranged in the middle of the second stud.

8. The machining clamp for drilling the lever part according to the claim 7 is characterized in that a stop is arranged on one side of the guide groove block (308), and the second spring (305) is sleeved on the second stud (306) and is located between the stop on one side of the guide groove block (308) and the thin hexagonal nut (304).

9. The machining clamp for drilling the lever part according to the claim 1 is characterized in that the left side and the right side of the upper surface of the clamp body (1) are provided with opening ear seats.

10. The machining clamp for drilling the lever part according to the claim 1 is characterized in that a positioning pin (102) is fixedly connected to the upper surface of the supporting plate (101), and an anti-reverse pin (103) is fixedly connected to the upper surface of the clamp body (1).