CN110919539B

CN110919539B - Grinding machine floating claw chuck

Info

Publication number: CN110919539B
Application number: CN201911362285.2A
Authority: CN
Inventors: 卢兆林; 卢小升; 卢云霞
Original assignee: Tongling Zhaolin Industrial Co ltd
Current assignee: Tongling Zhaolin Industrial Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-12-01
Anticipated expiration: 2039-12-26
Also published as: CN110919539A

Abstract

The invention belongs to the technical field of machine tool fixtures, and particularly relates to a grinding machine floating claw chuck which comprises a floating claw, an inner disc and an outer ring, wherein the floating claw is arranged on the inner disc; the outer ring is rotatably connected to the outer wall of the inner disc; the outer ring is controlled to rotate by an external device; the outer ring is fixedly connected with sliding columns which are uniformly distributed; the inner disc is rotatably connected with uniformly arranged rotating columns through bearings, and the rotating columns correspond to the sliding columns one by one; the floating claws are arranged on the inner disc; the surface of the floating claw is provided with a first sliding chute; the inner wall of the first sliding chute is positioned at one side of the rotating column and is designed in a rack shape; the inner disc is positioned below the rotating column and is provided with a first groove; a first motor is fixedly connected in the first groove; the output shaft of the first motor is fixedly connected with the rotating column; according to the invention, the outer ring is rotated to enable the sliding column to slide in the first sliding groove, the floating claw is used for fixing the workpiece to be machined in a rotating mode, and the clamping range of the chuck is adjusted by adjusting the relative position of the rotating column and the floating claw.

Description

Grinding machine floating claw chuck

Technical Field

The invention belongs to the technical field of machine tool fixtures, and particularly relates to a grinding machine floating claw chuck.

Background

The three-jaw chuck used by the existing machining equipment can only clamp a circular workpiece, auxiliary parts such as a copper sheet and the like are needed to be padded when an eccentric workpiece is machined, irregular workpieces cannot be machined, such as elliptical workpieces and the like, if irregular workpieces are to be machined, the four-jaw chuck needs to be replaced, meanwhile, the existing chuck can only adapt to the adjustment of small-range sizes when clamping parts, when parts of other sizes are replaced and produced, the chuck needs to be replaced frequently, the labor intensity of machining operators of factories is increased due to frequent replacement of the chuck, particularly, the work piece counting is carried out to pay when most enterprises machine the workpieces at present, the machining cost of the enterprises is increased, the time waste of machining the eccentric workpieces by replacing the chuck or adjusting the three-jaw chuck, the working efficiency is reduced, and the productivity of the enterprises is reduced.

A multipurpose machinery chuck that china patent issued, patent number 201257530, this patent include chuck body and three or four jack catchs, and the jack catch is movable mounting on the chuck body symmetrically, and the chuck body is provided with the supporting disk through the fix with screw. Although the patent integrates three-jaw self-centering and four-jaw single-action, and is suitable for processing parts with various geometric shapes in a certain batch, the three-jaw self-centering and four-jaw single-action machine is not suitable for processing round workpieces and most irregular workpieces in actual operation, and has the defects of inconvenient operation, time consumption and labor consumption.

A multi-purpose three-jaw chuck published by Chinese patent, patent No. 201610734575, which comprises a chuck front end cover, a chuck rear end cover, a positioning seat, a cover plate, a connecting block, a positioning screw, an adjusting screw, a synchronous gear, a gear handle and a plurality of jaws, wherein the chuck front end cover and the chuck rear end cover are matched with each other, the side surface of the chuck front end cover is provided with a wrench jack, the jaws are uniformly distributed and installed on the chuck front end cover, the positioning seat is connected between the chuck front end cover and the chuck rear end cover, the cover plate is fixed on the positioning seat, the connecting block is connected with the chuck front end cover, the positioning screw is installed on the positioning seat, the number of the adjusting screw corresponds to the number of the jaws, each jaw is matched with the corresponding adjusting screw, the adjusting screw is meshed with the, the clamping jaw can be used for machining round workpieces and small irregular workpieces, but the problem that the clamping distance of the clamping jaw can not be adjusted according to the size can not be solved at the same time.

Disclosure of Invention

The invention provides a floating jaw chuck of a grinding machine, which aims to make up for the defects of the prior art and solve the problems that the size range of parts clamped by the three-jaw chuck of the grinding machine is limited, the chuck needs to be frequently replaced when the specification of the parts is adjusted and produced, so that the labor intensity of workers is increased, the production efficiency is influenced, and the three-jaw chuck of the existing grinding machine is not suitable for irregular workpieces.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a grinding machine floating claw chuck, which comprises a floating claw, an inner disc and an outer ring, wherein the inner disc is provided with a groove; the outer ring is rotatably connected to the outer wall of the inner disc; the outer ring is controlled to rotate by an external device; the outer ring is fixedly connected with sliding columns which are uniformly distributed; the inner disc is rotatably connected with uniformly arranged rotating columns through bearings, and the rotating columns correspond to the sliding columns one by one; the design of the cylindrical gear of the rotating column; the floating claws are arranged on the inner disc; the floating claw is designed in an oval shape, and one end of the oval shape is larger than the other end of the oval shape; the surface of the floating claw is provided with a first sliding chute; a rotating column and a sliding column are connected in the first sliding groove in a sliding manner; the inner wall of the first sliding chute is positioned at one side of the rotating column and is designed in a rack shape; the inner disc is positioned below the rotating column and is provided with a first groove; a first motor is fixedly connected in the first groove; the output shaft of the first motor is fixedly connected with the rotating column;

when the floating claw chuck works, the floating claw chuck is arranged on a grinding machine, a mechanical arm is controlled to place parts to be processed between floating claws which are uniformly arranged, an outer ring is controlled to rotate, when the outer ring rotates, because a rack in a first chute is meshed with a rotating column, a sliding shaft fixedly connected to the outer ring slides in the first chute to drive the floating claws to rotate by taking the rotating column as the center, one ends of the rotating floating claws are all close to the center of an inner disc, workpieces to be processed are clamped and fixed, when the length of the floating claws close to the center of the inner disc is required to be changed to adapt to different parts, a first motor is controlled to rotate, so that the rotating column is driven to rotate by the motor, the floating claws and the rotating column are driven to generate displacement by the meshing of the rotating column and the side wall of a first groove, and the length of the floating claws close to the center of the inner disc when the rotating column is rotated as, the floating claw moves from the outer wall of the inner disc to the central arc for clamping, so that the floating claw chuck can adapt to parts with different specifications and sizes in a certain range, the position of the floating claw is adjusted by controlling the first motor, the length of the clamping end of the floating claw can be effectively changed, the size range of the parts processed by the floating claw chuck is enlarged, the application range of the floating claw chuck is enlarged, the situation that the different chucks need to be frequently replaced when the sizes of the parts to be produced are replaced during working is avoided, the production efficiency is seriously influenced, meanwhile, the parts are clamped towards the central position by the oval floating claw, the floating claw chuck can have good fixing effect on products with various shapes, the application range of the floating claw chuck is wider, the times that the chuck needs to be replaced due to the fact that the appearance of the products is not adapted are reduced, and the preparation time for replacing the processed products is shortened, thereby the production efficiency is accelerated by phase change.

Preferably, a second sliding groove is formed in the surface of one end, close to the center of the inner disc, of the floating claw; the second chute is fixedly connected with a rubber layer at an opening on the surface of the floating claw 1; the outer surface of the rubber layer is designed to be rough; the during operation, the inside extrusion of floating claw, contact part back rubber layer produces deformation, make floating claw and part change the surface contact into by the point contact or have the small area contact to change into the large tracts of land contact, make the frictional force increase between floating claw and the part, reinforcing floating claw is to the fixed effect of part, avoid receiving rotatory dynamics at the course of working that the part is too big, make and produce between part and the floating claw and rotate, influence the part machining precision, rubber layer and part carry out the contact simultaneously and can avoid making the part take place deformation in the clamping process effectively, rubber material is softer simultaneously, can not make part surface produce damage such as scraping flower, can prevent effectively that it scrapes the flower to produce because of the too big to cause of the clamping dynamics to part surface, bad problems such as deformation.

Preferably, one end of the second chute, which is far away from the rubber layer, is fixedly connected with an air cushion layer; the outer surfaces of the opposite sides of the air cushion layer and the rubber layer are fixedly connected with extrusion rods which are uniformly distributed; the air cushion layer is externally connected with an inflator pump through a conduit; when in work, the floating claw clamps the parts, the rubber layer is deformed, so that the inner air cushion layer is extruded by the extrusion rod at the deformation part, the air cushion layer is extruded, the extruded part is inwards sunken, so that the two sides of the pressurized part expand outwards, the expanded air cushion layer extrudes the rubber layer through the extrusion rod, and the rubber layer wraps the side wall of the part, further has the effect of strengthening and fixing the parts, and can inflate the air cushion layer by an external inflator pump when the parts to be processed are too small, the floating claws cannot be well fixed after rotating or the clamping force is insufficient, thereby expanding the air cushion layer, extruding the rubber layer through the extrusion rod, further wrapping the rubber layer on the outer surface of the part, the clamping and fixing effects on the parts are achieved, the clamping force of the parts to be machined is prevented from being too small, and the machining precision is prevented from being influenced by the phenomena of rotation and the like in the machining process.

Preferably, the surface of the inner disc is provided with second grooves which are uniformly distributed; the side walls of one sides of the second grooves are smooth, and the side walls of one sides of the second grooves are in a rack-shaped design; rotating shafts are rotatably connected in the second grooves; the rotating shaft is a cylindrical gear; the rotating shaft is positioned above the second groove and is rotatably connected with a fixed block; a second motor is arranged on the upper surface of the fixed block; the output shaft of the second motor penetrates through the fixed block and is fixedly connected with the upper surface of the rotating shaft; the fixed block is positioned in the second groove and fixedly connected with a guide plate; an infrared laser centering device is arranged in the center of the inner disc; when the fixture works, after the floating claws clamp the parts, the second motor is controlled to rotate, so that the rotating shaft is meshed with the inner wall of the second groove, the rotating shaft is controlled to move in the second groove, so that the fixing block is driven to move, in the moving process of the fixing block, the direction of the fixing block is controlled by the guide plate, the fixing block is moved towards the inner center until the fixing block is contacted with the surface of the part to be processed, so that the part is fixed again, meanwhile, the fixing blocks are matched with the infrared laser centering device to respectively control the uniformly arranged fixing blocks to move different distances, so that the part is subjected to fine-tuning centering treatment, the part cannot be eccentric in the processing process, the generation probability of defective products is reduced, meanwhile, the fixing blocks are matched with the floating claws to play a role in double fixation on the part, and the parts can be effectively prevented from rotating, displacing and the, the part processing process is safer and more stable, and the infrared laser positioner is used, so that the part is centered more accurately, the processing precision is improved, and the performance of the produced part is more superior.

Preferably, a third groove is formed in one side, located on the smooth inner wall of the second groove, of the inner disc; the third grooves are uniformly opened at one side of the second grooves; the third groove is internally and slidably connected with an extrusion plate; one side of the extrusion plate, which is close to the second groove, is in a rack shape, and the number of teeth of the extrusion plate is in one-to-one correspondence with the openings of the third groove, which are positioned in the second groove; one side of the third groove, which is far away from the second groove, is fixedly connected with an electric push rod uniformly; the extending end of the electric push rod is fixedly connected with the extrusion plate; the during operation, before the second motor rotates, control electric putter will stretch out the end and contract, make the tooth of seting up on the stripper plate that stretches into in the second recess contract in the third recess, then start second motor control axis of rotation and rotate, thereby adjust and fix the part position, simultaneously after fixed block position is confirmed, control electric putter stretches out and extrudees the stripper plate, thereby make the opening that the tooth on the stripper plate was seted up on the second recess wall through the third recess get into the second recess, and with the meshing of rotating wheel, it is fixed to make the axis of rotation, avoid the axis of rotation to take place to circle round and make the fixed block produce the phenomenon of contracting, thereby make the fixed block take place the displacement, the fixed effect of processing part is treated to the influence fixed block.

Preferably, the tooth shape on the extrusion plate is arc-shaped; when the electric pushing rod works, the clamping teeth on the surface of the extrusion plate extend into the second groove through the opening of the third groove in the second groove under the pushing action of the electric pushing rod, so that the rack-shaped side wall of the second groove is matched to fix the rotating shaft, because the tooth form on the extrusion plate is arc-shaped, after the rotating shaft is fixed, if the centering of the part to be processed is not accurate, the extrusion rod can be controlled to extend or contract, so that the rotating shaft generates a certain displacement between two adjacent arc-shaped teeth, thereby controlling the fixed block to finely adjust the part to be processed, leading the part to be processed to be more accurately centered, therefore, the processing quality is improved, the performance of the processed part is more excellent, and meanwhile, the arc-shaped gear can avoid the phenomena that the teeth are mutually extruded and deformed when the teeth are meshed with the trapezoidal teeth, the device is damaged, and extra maintenance cost is increased.

The invention has the following beneficial effects:

1. according to the grinder floating claw chuck, the inner disc, the outer ring, the sliding column and the rotating column are arranged, the sliding column is controlled to slide in the first sliding groove formed in the floating claw through the rotation of the outer ring, so that the floating claw is clamped inwards, meanwhile, the rubber layer, the air cushion layer and the extrusion rod arranged at the clamping end of the floating claw play a role in assisting and enhancing the fixing effect of a part to be machined, the whole device can freely regulate and control the clamping range of the floating claw to adapt to parts of different specifications and sizes, the frequency of replacing the chuck is effectively reduced, the same type of chuck can adapt to parts of more sizes, and meanwhile, the damage to the clamping part of the part can be effectively reduced through the soft contact with the part in the clamping process.

2. According to the grinding machine floating claw chuck, the fixed block, the rotating shaft and the extrusion plate are arranged, the floating claw chuck is converted from three-point fixation to six-point fixation, the fixing effect on a part can be effectively enhanced, the part is prevented from loosening, rotating and the like in the machining process to influence the machining precision, the fixed part can be finely adjusted by matching with the infrared laser positioner, the accurate centering effect is achieved, and the accuracy of a machined product is enhanced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the floating pawl;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is an enlarged view of a portion of FIG. 3 at C;

in the figure: the device comprises a floating claw 1, an inner disc 2, an outer ring 3, a sliding column 11, a rotating column 12, a first sliding groove 13, a first groove 14, a first motor 15, a second sliding groove 4, a rubber layer 41, an air cushion layer 42, an extrusion rod 43, a second groove 5, a rotating shaft 51, a fixed block 52, a second motor 53, a guide plate 54, an infrared laser positioner 55, a third groove 6, an extrusion plate 61 and an electric push rod 62.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the floating jaw chuck for the grinding machine according to the present invention comprises a floating jaw 1, an inner disc 2 and an outer ring 3; the outer ring 3 is rotatably connected to the outer wall of the inner disc 2; the outer ring 3 is controlled to rotate by an external device; the outer ring 3 is fixedly connected with sliding columns 11 which are uniformly distributed; the inner disc 2 is rotatably connected with uniformly arranged rotating columns 12 through bearings, and the rotating columns 12 correspond to the sliding columns 11 one by one; the design of the cylindrical gear of the rotating column 12; the floating claws 1 are arranged on the inner disc 2; the floating claw 1 is designed in an oval shape, and one end of the oval shape is larger than the other end of the oval shape; the surface of the floating claw 1 is provided with a first sliding chute 13; a rotating column 12 and a sliding column 11 are connected in the first sliding groove 13 in a sliding manner; the inner wall of the first sliding chute 13 is positioned at one side of the rotating column 12 and is designed in a rack shape; a first groove 14 is formed below the rotating column 12 of the inner disc 2; a first motor 15 is fixedly connected in the first groove 14; the output shaft of the first motor 15 is fixedly connected with the rotating column 12;

when the floating claw machining device works, the chuck of the floating claw 1 is arranged on a grinding machine, a mechanical arm is controlled to place parts to be machined between the floating claws 1 which are uniformly arranged, the outer ring 3 is controlled to rotate, when the outer ring 3 rotates, because the inner rack of the first sliding groove 13 is meshed with the rotating column 12, the sliding shaft fixedly connected with the outer ring 3 slides in the first sliding groove 13 to drive the floating claw 1 to rotate by taking the rotating column 12 as the center, one end of the rotating floating claw 1 is drawn close to the center of the inner disc 2, a workpiece to be machined is clamped and fixed, when the length of the floating claw 1 close to the center of the inner disc 2 needs to be changed to adapt to different parts, the first motor 15 is controlled to rotate, so that the rotating column 12 is driven to rotate by the motor, the floating claw 1 and the rotating column 12 are driven to generate displacement by the meshing of the rotating column 12 and the side wall of the first groove 14, and the length of the floating claw 1 close to one end of the center of the inner disc 2 when the rotating column 12, the floating claw 1 moves from the outer wall of the inner disc 2 to the centre arc for clamping, so that the chuck of the floating claw 1 can adapt to parts with different specifications and sizes in a certain range, and the position of the floating claw 1 is adjusted by controlling the first motor 15, so that the length of the clamping end of the floating claw 1 can be effectively changed, thereby the size range of the parts processed by the chuck of the floating claw 1 is enlarged, the adaptive range of the chuck of the floating claw 1 is larger, the problem that the production efficiency is seriously influenced because different chucks need to be frequently replaced when the sizes of the parts are replaced in work is avoided, meanwhile, the parts are clamped towards the centre by the oval floating claw 1, so that the chuck of the floating claw 1 can have good fixing effect on products with different shapes, the application range of the chuck of the floating claw 1 is wider, and the times that the chuck needs to be replaced because the appearances of the products are not suitable are reduced, the preparation time for replacing the processed product is reduced, thereby improving the production efficiency.

As an embodiment of the invention, a second sliding chute 4 is arranged on the surface of one end of the floating claw 1 close to the center of the inner disc 2; the second chute 4 is fixedly connected with a rubber layer 41 at the opening on the surface of the floating claw 1; the outer surface of the rubber layer 41 is in a rough design; the during operation, float claw 1 is inside to be extruded, contact part back rubber layer 41 produces deformation, make float claw 1 change the face contact or have small area contact to change into large tracts of land contact with the part by the point contact, make the frictional force increase between float claw 1 and the part, reinforcing float claw 1 is to the fixed effect of part, avoid receiving rotatory dynamics too big at the course of working part, make and produce between part and the float claw 1 and rotate, influence the part machining precision, rubber layer 41 and part carry out the contact and can avoid making the part take place deformation in the clamping process effectively, rubber material is softer simultaneously, can not make the part surface produce damage such as scraping flower, thereby can prevent effectively that the too big bad problems such as scraping flower, deformation are produced to the part surface because of the clamping dynamics.

As an embodiment of the present invention, an air cushion layer 42 is fixedly connected to one end of the second chute 4 away from the rubber layer 41; the outer surfaces of the opposite sides of the air cushion layer 42 and the rubber layer 41 are fixedly connected with extrusion rods 43 which are uniformly arranged; the air cushion layer 42 is externally connected with an inflator pump through a conduit; when the part clamping device works, the floating claw 1 enables the rubber layer 41 to deform when clamping a part, so that the inner air cushion layer 42 is extruded through the extrusion rod 43 at the deformation part, the air cushion layer 42 is extruded, the extruded part is sunken inwards, so that the two sides of the pressurized part expand outwards, the expanded air cushion layer 42 also extrudes the rubber layer 41 through the extrusion rod 43, so that the rubber layer 41 wraps the side wall of the part, and the part is enhanced and fixed, meanwhile, when the part to be machined is too small, the floating claw 1 cannot be fixed well after rotating, or the clamping force is insufficient, the air cushion layer 42 can be inflated through the external inflator pump, so that the air cushion layer 42 expands, so that the rubber layer 41 is extruded through the extrusion rod 43, the rubber layer 41 wraps the outer surface of the part, the part has the effects of clamping and fixing, and the part to be machined is prevented from being too small in clamping force, the machining precision is influenced by phenomena such as rotation and the like in the machining process.

As an embodiment of the invention, the surface of the inner disc 2 is provided with second grooves 5 which are uniformly arranged; the second groove 5 is smooth in the side wall of one uniform side and is in a rack-shaped design in the side wall of one side; the second grooves 5 are all rotatably connected with rotating shafts 51; the rotating shaft 51 is a cylindrical gear; the rotating shaft 51 is positioned above the second groove 5 and is rotatably connected with a fixed block 52; the upper surface of the fixed block 52 is provided with a second motor 53; an output shaft of the second motor 53 penetrates through the fixed block 52 and is fixedly connected with the upper surface of the rotating shaft 51; the fixed block 52 is positioned in the second groove 5 and fixedly connected with a guide plate 54; an infrared laser centering device 55 is arranged in the center of the inner disc 2; when the fixture works, after the floating claw 1 clamps a part, the second motor 53 is controlled to rotate, so that the rotating shaft 51 is meshed with the inner wall of the second groove 5, the rotating shaft 51 is controlled to move in the second groove 5, the fixed block 52 is driven to move, the direction of the fixed block 52 is controlled by the guide plate 54 in the moving process of the fixed block 52, the fixed block 52 moves towards the inner center until contacting the surface of the part to be processed, so that the part is fixed again, meanwhile, the fixed blocks 52 which are uniformly arranged are respectively controlled to move different distances by matching with the infrared laser centering device 55, so that the part is subjected to fine-adjustment centering treatment, the part cannot be eccentric in the processing process, the generation probability of defective products is reduced, meanwhile, the fixed block 52 plays a role in double fixation on the part by matching with the floating claw 1, and the part can be effectively prevented from rotating in the processing process, The displacement and the like enable the part processing process to be safer and more stable, and the use of the infrared laser positioner enables the part to be more accurate in centering, so that the processing precision is improved, and the performance of the produced part is more superior.

As an embodiment of the invention, a third groove 6 is formed on one side of the inner disc 2, which is positioned on the smooth inner wall of the second groove 5; the third grooves 6 are uniformly opened at one side of the second grooves 5; the third groove 6 is internally and slidably connected with an extrusion plate 61; the extrusion plate 61 is in a rack shape at one side close to the second groove 5, and the number of teeth of the extrusion plate is in one-to-one correspondence with the openings of the third groove 6 in the second groove 5; one side of the third groove 6, which is far away from the second groove 5, is fixedly connected with an electric push rod 62; the extending end of the electric push rod 62 is fixedly connected with the extrusion plate 61; during operation, before second motor 53 rotates, control electric putter 62 will stretch out the end and contract, make the tooth that sets up on the stripper plate 61 that stretches into in the second recess 5 contract back in the third recess 6, then start second motor 53 control axis of rotation 51 and rotate, thereby adjust and fix the part position, simultaneously when fixed block 52 position is confirmed the back, control electric putter 62 stretches out and extrudes stripper plate 61, thereby make the tooth on stripper plate 61 set up the opening on the wall of second recess 5 through third recess 6 and get into second recess 5, and with the running wheel meshing, make axis of rotation 51 fixed, avoid axis of rotation 51 to take place to convolute and make fixed block 52 produce the phenomenon of retracting, thereby make fixed block 52 take place the displacement, influence the fixed effect of fixed block 52 treating the processing part.

In one embodiment of the present invention, the teeth on the pressing plate 61 are circular arc teeth; when the device works, when the extrusion plate 61 extends the latch on the surface into the second groove 5 through the opening of the third groove 6 in the second groove 5 under the pushing action of the electric push rod 62, so as to match the rack-shaped side wall of the second groove 5 to fix the rotating shaft 51, because the teeth on the extrusion plate 61 are arc-shaped teeth, after the rotating shaft 51 is fixed, if the centering of the part to be processed is not accurate, the extrusion plate 61 can be controlled to extend or contract, so that the rotating shaft 51 generates a certain displacement between two adjacent arc-shaped teeth, thereby controlling the fixed block 52 to finely adjust the part to be processed, so that the centering of the part to be processed is more accurate, thereby improving the processing quality, and making the performance of the processed part more excellent, meanwhile, the design of the arc-shaped gear can avoid the phenomena of mutual extrusion between the teeth and deformation and the like when the teeth are meshed with the trapezoidal teeth, and the, additional maintenance costs are added.

The specific working process is as follows:

when the floating claw machining device works, the chuck of the floating claw 1 is arranged on a grinding machine, a mechanical arm is controlled to place parts to be machined between the floating claws 1 which are uniformly arranged, the outer ring 3 is controlled to rotate, when the outer ring 3 rotates, because the inner rack of the first sliding groove 13 is meshed with the rotating column 12, the sliding shaft fixedly connected with the outer ring 3 slides in the first sliding groove 13 to drive the floating claw 1 to rotate by taking the rotating column 12 as the center, one end of the rotating floating claw 1 is drawn close to the center of the inner disc 2, a workpiece to be machined is clamped and fixed, when the length of the floating claw 1 close to the center of the inner disc 2 needs to be changed to adapt to different parts, the first motor 15 is controlled to rotate, so that the rotating column 12 is driven to rotate by the motor, the floating claw 1 and the rotating column 12 are driven to generate displacement by the meshing of the rotating column 12 and the side wall of the first groove 14, and the length of the floating claw 1 close to one end of the center of the inner disc 2 when the rotating column 12, after floating claw 1 carries out the centre gripping to the part, control second motor 53 is rotatory, thereby make axis of rotation 51 through with the meshing between the 5 inner walls of second recess, control axis of rotation 51 removes in second recess 5, thereby drive fixed block 52 and remove, fixed block 52 is at the in-process that removes, deflector 54 controls the direction of fixed block 52, make fixed block 52 remove to contacting the part surface of treating processing to inside center, thereby produce the effect of fixing once more to the part, the fixed block 52 that cooperates infrared laser centralizer 55 to control respectively the even arrangement simultaneously removes different distances respectively, thereby finely tune the centering to the part and handle.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a grinding machine floating jaw chuck which characterized in that: comprises a floating claw (1), an inner disc (2) and an outer ring (3); the outer ring (3) is rotatably connected to the outer wall of the inner disc (2); the outer ring (3) is controlled to rotate by an external device; the outer ring (3) is fixedly connected with sliding columns (11) which are uniformly distributed; the inner disc (2) is rotatably connected with uniformly arranged rotating columns (12) through bearings, and the rotating columns (12) correspond to the sliding columns (11) one by one; the rotating column (12) is designed as a cylindrical gear; the floating claws (1) are arranged on the inner disc (2); the floating claw (1) is designed in an oval shape, and one end of the oval shape is larger than the other end of the oval shape; a first sliding groove (13) is formed in the surface of the floating claw (1); a rotating column (12) and a sliding column (11) are connected in the first sliding groove (13) in a sliding manner; the inner wall of the first sliding chute (13) is in a rack-shaped design at one side of the rotating column (12); a first groove (14) is formed below the rotating column (12) of the inner disc (2); a first motor (15) is fixedly connected in the first groove (14); an output shaft of the first motor (15) is fixedly connected with the rotating column (12);

a second sliding groove (4) is formed in the surface of one end, close to the center of the inner disc (2), of the floating claw (1); the second chute (4) is fixedly connected with a rubber layer (41) at an opening on the surface of the floating claw (1); the outer surface of the rubber layer (41) is designed to be rough;

one end of the second sliding groove (4) far away from the rubber layer (41) is fixedly connected with an air cushion layer (42); the outer surfaces of the opposite sides of the air cushion layer (42) and the rubber layer (41) are fixedly connected with extrusion rods (43) which are uniformly arranged; the air cushion layer (42) is externally connected with an inflator pump through a conduit;

the surface of the inner disc (2) is provided with second grooves (5) which are uniformly distributed; the second groove (5) is smooth in the side wall of one uniform side and is in a rack-shaped design in the side wall of one side; rotating shafts (51) are rotatably connected in the second grooves (5); the rotating shaft (51) is a cylindrical gear; the rotating shaft (51) is positioned above the second groove (5) and is rotatably connected with a fixed block (52); a second motor (53) is arranged on the upper surface of the fixed block (52); an output shaft of the second motor (53) penetrates through the fixed block (52) and is fixedly connected with the upper surface of the rotating shaft (51); the fixed block (52) is positioned in the second groove (5) and fixedly connected with a guide plate (54); an infrared laser centering device (55) is arranged at the center of the inner disc (2).

2. A grinding machine floating jaw chuck as claimed in claim 1, wherein: a third groove (6) is formed in one side, located on the smooth inner wall of the second groove (5), of the inner disc (2); the third grooves (6) are uniformly opened at one side of the second grooves (5); the third groove (6) is internally and slidably connected with an extrusion plate (61); the extrusion plate (61) is in a rack shape at one side close to the second groove (5), and the number of teeth of the extrusion plate is in one-to-one correspondence with the openings of the third groove (6) in the second groove (5); one side of the third groove (6) far away from the second groove (5) is fixedly connected with an electric push rod (62) uniformly; the extending end of the electric push rod (62) is fixedly connected with the extrusion plate (61).

3. A grinding machine floating jaw chuck as claimed in claim 2, wherein: the tooth form on the extrusion plate (61) is circular arc tooth.