CN219403405U

CN219403405U - Automatic workpiece clamping and loosening device for high-precision machining

Info

Publication number: CN219403405U
Application number: CN202320515604.4U
Authority: CN
Inventors: 张丹亚
Original assignee: Shanghai Jiaren Precision Mould Co ltd
Current assignee: Shanghai Jiaren Precision Mould Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-07-25
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses an automatic workpiece clamping and loosening device for high-precision machining, which comprises a servo motor and a fixed seat, wherein lifting brackets are fixedly connected to two sides of the top end of a machining base respectively, the fixed seats are welded to the top end and the bottom end of each lifting bracket, the servo motor is fixedly connected to the top end of each fixed seat, and a driving shaft is fixedly connected to the output end of each servo motor. This a work piece self-holding, loosening device for high accuracy processing is through being provided with cylinder mount pad, centre gripping cylinder, work piece fixed chamber, work piece fixed block, and high accuracy work piece inserts in the work piece fixed chamber, promotes the piston rod inwards to remove through four sets of centre gripping cylinders, and four sets of clamp splice tightly high accuracy work piece, realizes four directions to high accuracy work piece's quick centre gripping, and when processing, high accuracy work piece can not squint or rock, and high accuracy work piece then automatic loosening after finishing, and degree of automation is high, has solved the not enough problem of centre gripping precision.

Description

Automatic workpiece clamping and loosening device for high-precision machining

Technical Field

The utility model relates to the technical field of high-precision machining, in particular to an automatic workpiece clamping and loosening device for high-precision machining.

Background

When a high-precision metal part is subjected to surface processing such as drilling and cutting, an automatic clamping machine is required to be used for positioning the metal part, so that a workpiece cannot deviate or shake during processing.

According to application number CN201521012906.1, a workpiece automatic clamping and loosening device for high-precision machining is disclosed, which comprises a cylinder, push block and clamping device connected with the cylinder, clamping device comprises a sliding block, a sleeve and a chuck, the sleeve is provided with a central shaft hole, when the cylinder pushes the push block, the push block pushes the sliding block and the sleeve through an inclined plane so that the sleeve drives the chuck to clamp, the moving direction of the push block is perpendicular to the moving direction of the sliding block, the center of the chuck is provided with a shaft hole, the chuck comprises a large end and a small end, the large end is a clamping part, the small end is a mounting part, the large end and the small end are transited through an inclined plane step, the outer diameter of the large end is larger than the outer diameter of the small end, the large end and the small end are all formed into a cone shape, the periphery of the chuck is provided with a plurality of through grooves, one end of each through groove is communicated with the end face of the large end, the other end of each through groove extends to the small end and is provided with a round hole, and the diameter of the round hole is larger than the width of each through groove.

The mechanism used in the technology has single-sided clamping, is affected by machining vibration when machining is performed on a machine tool, and is difficult to ensure that multidirectional stress is uniform, and machining precision is often affected.

Therefore, there is a need for an automatic workpiece clamping and loosening device for high-precision machining, which solves the technical drawbacks set forth in the above-mentioned technology.

Disclosure of Invention

The utility model aims to provide an automatic workpiece clamping and loosening device for high-precision machining, which is used for solving the problem that the machining quality of a precision workpiece is affected in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a work piece self-holding, loosening device for high accuracy processing, includes servo motor and fixing base, the both sides on processing base top are fixedly connected with lifting support respectively, lifting support top and bottom all weld the fixing base, fixing base top fixedly connected with servo motor, servo motor's output fixedly connected with drive shaft, drive shaft bottom fixedly connected with screw rod, screw rod movable assembly is between the fixing base, the screw rod is provided with two sets of altogether, screw rod outside top and below have all cup jointed the screw thread piece, be provided with the work piece fixed block between the lifting support, the work piece fixed cavity has been seted up in the work piece fixed block, all fixedly connected with connecting rod between the four corners of screw thread piece and work piece fixed block, the equal fixedly connected with cylinder mount pad in both ends and both sides of work piece fixed block, cylinder mount pad department all fixedly mounted with centre gripping cylinder, the output of centre gripping cylinder all is connected with the centre gripping seat through the piston rod fixedly connected with centre gripping seat.

Preferably, the inside of cylinder mount pad and work piece fixed block has all been seted up and has been assembled the screw, the fixed screw is all installed to the inside of assembly screw, cylinder mount pad and work piece fixed block pass through fixed screw fixed connection.

Preferably, the mounting grooves are formed in the clamping seat, clamping blocks are embedded in the mounting grooves, and assembling screws are fixedly connected between the mounting grooves and the clamping blocks, and the mounting grooves are matched with the clamping blocks in a jogged mode.

Preferably, the mounting groove and the clamping block are both made of metal materials.

Preferably, the clamping blocks are provided with four groups and are distributed annularly about the circle center of the workpiece fixing cavity, and the clamping blocks jointly clamp the high-precision workpiece.

Preferably, the lifting support is provided with lifting grooves in the inner part, and the connecting rod penetrates through the lifting grooves and is in sliding connection with the lifting grooves.

Compared with the prior art, the utility model has the beneficial effects that: the automatic workpiece clamping and loosening device for high-precision machining not only greatly improves the precision of clamping the precision workpiece and ensures the machining quality of the precision workpiece, but also has the function of precisely adjusting the height position of the high-precision workpiece, is convenient for precision machining, and realizes the integral convenience for assembly, disassembly and daily maintenance;

(1) The high-precision workpiece is inserted into the workpiece fixing cavity, the piston rod is pushed to move inwards by the four groups of clamping cylinders, the high-precision workpiece is clamped by the four groups of clamping blocks, the high-precision workpiece is rapidly clamped in four directions, the high-precision workpiece cannot deviate or shake during processing, the high-precision workpiece is automatically loosened after the processing is finished, manual adjustment is not needed, the multi-directional stress is uniform, the automation degree is high, the precision of clamping the precision workpiece is greatly improved, and the processing quality of the precision workpiece is ensured;

(2) The device is provided with two groups of screws which can be used for lifting the height of the workpiece fixing block, the screws are movably assembled on the outer side of the lifting bracket, when the height of a high-precision workpiece is required to be adjusted, the servo motor is started, the servo motor drives the screws to rotate, the two groups of screw blocks move up and down outside the screws, and the workpiece fixing block is driven to lift through the movement of the connecting rod in the lifting groove, so that the device has the function of precisely adjusting the height position of the high-precision workpiece and is convenient for precision machining;

(3) Through being provided with assembly screw, mounting groove, offered the mounting groove in the grip slipper, through assembly screw fixed connection in the clamp splice embedding mounting groove, can dismantle in order to clear up or change the clamp splice as required for four groups of cylinder mount pad also accessible fixed screw dismantles of fixed centre gripping cylinder, whole be convenient for equipment, dismantlement and daily maintenance.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic elevation view of the lifting support of the present utility model;

FIG. 3 is a schematic diagram of a front view of a clamping seat according to the present utility model;

fig. 4 is a schematic diagram of the front view of the clamping block of the present utility model.

In the figure: 1. a servo motor; 2. a fixing seat; 3. a screw block; 4. a screw; 5. a workpiece fixing block; 6. a clamping seat; 7. clamping blocks; 8. a connecting rod; 9. a lifting groove; 10. processing a base; 11. a lifting bracket; 12. assembling a screw hole; 13. a high-precision workpiece; 14. assembling a screw; 15. a workpiece fixing cavity; 16. a set screw; 17. a drive shaft; 18. a cylinder mounting seat; 19. a clamping cylinder; 20. and a mounting groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-4, an automatic workpiece clamping and loosening device for high-precision machining comprises a servo motor 1 and a fixed seat 2, wherein lifting brackets 11 are fixedly connected to two sides of the top end of a machining base 10 respectively, the top end and the bottom end of each lifting bracket 11 are welded with the fixed seat 2, a workpiece fixing block 5 is arranged between the lifting brackets 11, a workpiece fixing cavity 15 is formed in each workpiece fixing block 5, connecting rods 8 are fixedly connected between each threaded block 3 and four corners of each workpiece fixing block 5, two ends and two sides of each workpiece fixing block 5 are fixedly connected with cylinder mounting seats 18, clamping cylinders 19 are fixedly assembled at the positions of the cylinder mounting seats 18, the output ends of the clamping cylinders 19 are fixedly connected with clamping seats 6 through piston rods, mounting grooves 20 and clamping blocks 7 are made of metal materials, each clamping block 7 is provided with four groups and distributed annularly about the circle center of each workpiece fixing cavity 15, each clamping block 7 jointly clamps a high-precision workpiece 13, lifting groove 9 is formed in each lifting bracket 11, and each connecting rod 8 penetrates through each lifting groove 9 and is in sliding connection with each lifting groove 9;

specifically, as shown in fig. 1, 3 and 4, the high-precision workpiece 13 is inserted into the workpiece fixing cavity 15, the piston rod is pushed to move inwards by the four groups of clamping cylinders 19, the four groups of clamping blocks 7 clamp the high-precision workpiece 13, the high-precision workpiece 13 is rapidly clamped in four directions, the high-precision workpiece 13 cannot deviate or shake during processing, and the high-precision workpiece 13 is automatically loosened after processing is finished without manual adjustment.

Example 2: the top end of the fixed seat 2 is fixedly connected with a servo motor 1, the output end of the servo motor 1 is fixedly connected with a driving shaft 17, the bottom end of the driving shaft 17 is fixedly connected with a screw 4, the screw 4 is movably assembled between the fixed seats 2, two groups of screws 4 are arranged, and threaded blocks 3 are sleeved on the upper part and the lower part outside the screw 4;

specifically, as shown in fig. 1 and 2, the device is provided with two groups of screws 4 which can be used for lifting the height of the workpiece fixing block 5, the screws 4 are movably assembled on the outer side of the lifting support 11, when the height of the high-precision workpiece 13 needs to be adjusted, the servo motor 1 is started, the servo motor 1 drives the screws 4 to rotate, the two groups of screw blocks 3 move up and down outside the screws 4, and the workpiece fixing block 5 is driven to lift by moving in the lifting groove 9 through the connecting rod 8.

Example 3: the cylinder mounting seat 18 and the workpiece fixing block 5 are respectively provided with an assembly screw hole 12, the inside of each assembly screw hole 12 is respectively provided with a fixing screw 16, the cylinder mounting seat 18 and the workpiece fixing block 5 are fixedly connected through the fixing screws 16, the inside of the clamping seat 6 is respectively provided with a mounting groove 20, the inside of each mounting groove 20 is embedded with a clamping block 7, an assembly screw 14 is fixedly connected between each mounting groove 20 and each clamping block 7, and the mounting grooves 20 and the clamping blocks 7 are in embedded matching;

specifically, as shown in fig. 1, 3 and 4, the clamping seat 6 is provided with a mounting groove 20, the clamping block 7 is embedded into the mounting groove 20 and fixedly connected through the assembly screw 14, the clamping block 7 can be disassembled according to the requirement so as to be cleaned or replaced, and the four groups of cylinder mounting seats 18 for fixing the clamping cylinders 19 can also be disassembled through the fixing screws 16.

Working principle: when the high-precision workpiece clamping device is used, a high-precision workpiece 13 is inserted into the workpiece fixing block 5, a piston rod is pushed to move inwards through four groups of clamping cylinders 19, the four groups of clamping blocks 7 clamp the high-precision workpiece 13, the high-precision workpiece 13 is clamped quickly in four directions, when the height of the high-precision workpiece 13 needs to be adjusted, a servo motor 1 is started, a screw 4 is driven by the servo motor 1 to rotate, two groups of threaded blocks 3 move up and down outside the screw 4, the workpiece fixing block 5 is driven to lift by moving in a lifting groove 9 through a connecting rod 8, during machining, the high-precision workpiece 13 cannot deviate or shake, the high-precision workpiece 13 is automatically loosened after machining is finished, manual adjustment is not needed, a mounting groove 20 is formed in a clamping seat 6, the clamping blocks 7 are fixedly connected through assembling screws 14, the clamping blocks 7 can be cleaned or replaced according to requirements, and four groups of cylinder mounting seats 18 for fixing the clamping cylinders 19 can be detached through fixing screws 16.

Claims

1. A work piece self-holding, loosening device for high accuracy processing, includes servo motor (1) and fixing base (2), its characterized in that: the two sides on the top of the processing base (10) are fixedly connected with lifting brackets (11) respectively, the fixing seats (2) are welded on the top and the bottom of the lifting brackets (11), the servo motor (1) is fixedly connected on the top of the fixing seats (2), the driving shaft (17) is fixedly connected with the driving shaft (17) at the output end, the screw rods (4) are fixedly connected with the screw rods (4) at the bottom of the driving shaft, the screw rods (4) are movably assembled between the fixing seats (2), the screw rods (4) are totally provided with two groups, threaded blocks (3) are sleeved on the upper part and the lower part outside the screw rods (4), workpiece fixing blocks (5) are arranged between the lifting brackets (11), workpiece fixing cavities (15) are formed in the workpiece fixing blocks (5), connecting rods (8) are fixedly connected between the four corners of the threaded blocks (3) and the workpiece fixing blocks (5), clamping cylinders (18) are fixedly connected on the two ends and the two sides of the workpiece fixing blocks (5), and clamping cylinders (19) are fixedly assembled at the positions of the cylinder mounting blocks (18), and the clamping cylinders (19) respectively, and the clamping cylinders (6) are fixedly connected with the piston rods through the clamping cylinders (6).

2. The automatic workpiece clamping and loosening device for high-precision machining according to claim 1, wherein: the cylinder mounting seat (18) and the workpiece fixing block (5) are internally provided with assembly screw holes (12), the interior of each assembly screw hole (12) is internally provided with a fixing screw (16), and the cylinder mounting seat (18) and the workpiece fixing block (5) are fixedly connected through the fixing screws (16).

3. The automatic workpiece clamping and loosening device for high-precision machining according to claim 1, wherein: the clamping seat is characterized in that the inside of the clamping seat (6) is provided with mounting grooves (20), clamping blocks (7) are embedded in the mounting grooves (20), assembling screws (14) are fixedly connected between the mounting grooves (20) and the clamping blocks (7), and the mounting grooves (20) are matched with the clamping blocks (7) in a jogged mode.

4. A workpiece automatic clamping and unclamping device for high precision machining according to claim 3, wherein: the mounting groove (20) and the clamping block (7) are made of metal materials.

5. A workpiece automatic clamping and unclamping device for high precision machining according to claim 3, wherein: the clamping blocks (7) are provided with four groups and are distributed annularly about the circle center of the workpiece fixing cavity (15), and the clamping blocks (7) jointly clamp the high-precision workpiece (13).

6. The automatic workpiece clamping and loosening device for high-precision machining according to claim 1, wherein: lifting grooves (9) are formed in the lifting supports (11), and the connecting rods (8) penetrate through the lifting grooves (9) and are in sliding connection with the lifting grooves (9).