CN213224995U - Movable dovetail groove workpiece fixing device - Google Patents

Abstract

The utility model provides a movable dovetail work piece fixing device, including fixed station and activity frock board, be equipped with the jacking cylinder on the fixed station, push away tight cylinder and location boss, jacking cylinder piston rod tip fixed connection wedge chock, it has the connecting block to push away tight cylinder piston rod tip fixed, the activity frock board is including the activity platen, fixed dovetail board, movable dovetail board and the guide screw more than two, fixed dovetail board fixed connection is on the activity platen, activity dovetail board bottom and guide screw one end fixed connection, be equipped with the guide way more than two of parallel and push away tight cylinder piston rod direction of motion on the activity platen, the guide screw other end and guide way sliding connection, activity dovetail board bottom surface middle part is equipped with the spread groove of registrating with the connecting block. The device adopts the movable dovetail groove structure of modularization, has solved the incomplete drunkenness that takes place of frock and work piece laminating and has caused the too fast wearing and tearing of frock board and the problem of piece on quick, has reduced production complexity and equipment maintenance cost.

Description

Movable dovetail groove workpiece fixing device

The technical field is as follows:

the utility model relates to the field of machinary, especially, relate to rail transit vehicle technique, specifically a movable dovetail work piece fixing device.

Background art:

at present, in the process of assembling a pressing sleeve of a brake accessory of a rail transit vehicle, a workpiece with a dovetail groove structure is fixed by an expansion device with the fixed dovetail groove structure, the fixed dovetail groove structure has the characteristics of compact structure and firm connection, but a certain gap is required to be reserved at the matched size position of the dovetail groove and the workpiece for facilitating loading and unloading the workpiece, and the workpiece fixing device is designed by adopting the structure so that the workpiece cannot be completely fixed and is easy to move under the action of external force. Especially under the operating condition of multifrequency drunkenness, the frock board of work piece fixing device wearing and tearing are too fast, and the change frequency is high, owing to need to change monoblock frock board, has further increased manufacturing cost. In addition, after the device adopts a fixed dovetail groove structure, a workpiece needs to penetrate into the dovetail groove from one end, so that the labor intensity of workers is high, and the working efficiency is low.

The utility model has the following contents:

an object of the utility model is to provide a movable dovetail work piece fixing device, adopt movable dovetail structure to replace traditional fixed dovetail structure, and realize the auto-lock through the inclined plane between wedge chock and the movable dovetail board, the incomplete drunkenness that takes place of frock and work piece laminating in the traditional structure has effectively been solved and has caused the frock board to wear and tear too fast, and current equipment needs the workman to penetrate the dovetail with the work piece from one end when the work piece is fixed and causes intensity of labour big, the low scheduling problem of operating efficiency, effectively reduce the production complexity of work piece pressure cover assembly process. Meanwhile, the movable tooling plate with the modular design realizes the local replacement of the part easy to wear, and effectively reduces the equipment maintenance cost.

The utility model discloses a movable dovetail groove workpiece fixing device, including fixed workbench, wherein, fixed workbench is provided with a pushing cylinder and two jacking cylinders, the pushing cylinder is horizontally fixed on the bottom surface of the middle part of the fixed workbench, the upper parts of the two jacking cylinders are vertically fixed on the bottom surface of the fixed workbench and symmetrically arranged on the two sides of the pushing cylinder, square through holes are arranged in the fixed workbench corresponding to the two jacking cylinders and the piston rod of the pushing cylinder, positioning bosses are arranged around the square through holes at the positions of the two jacking cylinders, the positioning bosses are fixedly arranged on the table surface of the fixed workbench, the end part of the piston rod of the jacking cylinder is fixedly connected with a wedge-shaped chock block, the jacking cylinder drives the wedge-chock block to move up and down in the square through hole, the end part of a piston rod of the tightening cylinder is fixedly provided with a connecting block, the connecting block is positioned in the square through hole, the top of the connecting block extends out of the square through hole, the tightening cylinder drives the connecting block to reciprocate parallel to the table surface of the fixed working table, the fixed working table is provided with a movable tooling plate, the movable tooling plate is attached to the plane of the fixed working table, the movable tooling plate comprises a movable table plate, a fixed dovetail groove plate, a movable dovetail groove plate and more than two guide screws, the movable table plate is provided with a through square hole corresponding to the square through hole, the movable tooling plate is sleeved and connected with the positioning boss through the through square hole and is kept at the fixed position of the table surface of the fixed working table, and the fixed dovetail groove plate is transversely arranged at one side of the through square hole and is fixedly connected to the movable table plate, the movable dovetail groove plate is arranged on the other side of the through square hole corresponding to the fixed dovetail groove plate in the transverse direction, the contact surface of the movable dovetail groove plate and the wedge-shaped plug block is an inclined surface, the bottom of the movable dovetail groove plate is fixedly connected with one end of the guide screw, the movable table plate is provided with guide grooves which are parallel to more than two numbers in the motion direction of the piston rod of the pushing cylinder, the other end of the guide screw is connected with the guide grooves in a sliding mode, the middle of the bottom surface of the movable dovetail groove plate is provided with a connecting groove, and the connecting groove is connected with the connecting block in a sleeved mode.

Furthermore, the jacking cylinder is connected with the wedge-shaped chock through a T-shaped joint arranged in the wedge-shaped chock.

Further, the movable dovetail groove plate is fixed with the guide screw through threads.

The utility model discloses a theory of operation is: wedge chock falls to the extreme low position under the jacking cylinder drive, the manual work is placed movable frock board on the fixed station, movable frock board is realized fixing a position through the location boss on the fixed station mesa and is placed, and with activity dovetail groove board and connecting block registrate, inching switch drive pushes away tight cylinder and pulls activity dovetail groove board to the closure state, artifical facial make-up work piece, contact a dovetail with fixed dovetail groove board, inching switch control pushes away tight cylinder action, it opens and props tight work piece to promote activity dovetail groove board, inching switch drive jacking cylinder action, it is ejecting along the through-hole with the wedge chock, fill in between fixed dovetail groove board and the activity dovetail groove board, make the activity dovetail groove board can't retreat with this completion work piece fixed, realize the auto-lock through the inclined plane contact mode between wedge chock and the activity dovetail groove board simultaneously. When a workpiece is reversely taken, the inching switch drives the jacking cylinder to move downwards, the wedge-shaped chock block falls down along the through hole, and then the inching switch drives the pushing cylinder to move, so that the movable dovetail groove plate retracts, and the workpiece is loosened.

Compared with the prior art, the utility model, its effect is positive and obvious. The utility model discloses a movable dovetail structure to realize the auto-lock through the inclined plane between wedge chock and the movable dovetail frid, effectively solved in the traditional structure frock and the incomplete drunkenness that takes place of work piece laminating and cause the frock board wearing and tearing at the excessive speed, and current equipment needs the workman to penetrate the dovetail with the work piece from one end when the work piece is fixed and causes intensity of labour big, the low scheduling problem of operating efficiency, effectively reduce the work piece and press the production complexity of overlapping in the assembling process. Meanwhile, the movable tooling plate with the modular design realizes the local replacement of the part easy to wear, and effectively reduces the equipment maintenance cost.

Description of the drawings:

fig. 1 is a schematic view of the top view structure of the fixed workbench of the present invention.

Fig. 2 is a schematic view of the overhead structure of the movable tooling plate of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

Fig. 4 is a schematic view of the cross-sectional structure of the movable tooling plate of the present invention.

Fig. 5 is a schematic view of the cross-sectional structure of the fixing table of the present invention.

The specific implementation mode is as follows:

example 1:

as shown in FIGS. 1 to 5, the movable dovetail groove workpiece fixing device of the present invention comprises a fixed workbench 1, a pushing cylinder 102 and two jacking cylinders 101 are disposed on the fixed workbench 1, the pushing cylinder 102 is horizontally fixed on the bottom surface of the middle portion of the fixed workbench 1, the upper portions of the two jacking cylinders 101 are vertically fixed on the bottom surface of the fixed workbench 1 and symmetrically disposed on both sides of the pushing cylinder 102, square through holes 2 are disposed at positions corresponding to the piston rods of the two jacking cylinders 101 and the pushing cylinder 102 in the fixed workbench 1, positioning bosses 5 are disposed around the square through holes 2 at the position of the jacking cylinders 101, the positioning bosses 5 are fixedly disposed on the table surface of the fixed workbench 1, wedge-shaped plugs 103 are fixedly connected to the end portions of the piston rods of the jacking cylinders 101, the jacking cylinders 101 drive the wedge-shaped plugs 103 to move up and down in the square through holes 2, the wedge-shaped plugs 103 are driven by the jacking cylinders 101 to fall to the lowest position during loading, the end part of a piston rod of the tightening cylinder 102 is fixedly provided with a connecting block 104, the connecting block 104 is positioned in the square through hole 2, the top part of the connecting block extends out of the square through hole 2, the tightening cylinder 102 drives the connecting block 104 to reciprocate parallel to the table surface of the fixed workbench 1, the fixed workbench 1 is provided with a movable tooling plate 3, the movable tooling plate 3 is attached to the plane of the fixed workbench 1, the movable tooling plate 3 comprises a movable bedplate 301, a fixed dovetail groove plate 302, a movable dovetail groove plate 303 and more than two guide screws 304, the movable bedplate 301 is provided with a through square hole 4 corresponding to the square through hole 2, the movable tooling plate 3 is sleeved and connected with a positioning boss 5 through the through square hole 4 and is kept at a fixed position on the table surface of the fixed workbench 1, the fixed dovetail groove plate 302 is transversely arranged at one side of the through square hole 4 and is fixedly connected to the movable bedplate 301, the movable dovetail groove plate 303 is transversely arranged at the other side of the through square through hole 4, the bottom of movable dovetail groove board 303 and the one end fixed connection of guide screw 304, be equipped with the guide way 305 that is on a parallel with the more than two figure of pushing up cylinder 102 piston rod direction of motion on the movable platen 301, the other end and the guide way 305 sliding connection of guide screw 304, the bottom surface middle part of movable dovetail groove board 303 is equipped with connecting groove 306, connecting groove 306 is connected with connecting block 104 registrate, it promotes movable dovetail groove board 303 through connecting block 104 and moves along guide way 305 to push up cylinder 102, realize the upper part of work piece, fixed and get the piece.

Further, the jacking cylinder 101 is connected with the wedge block 103 through a T-joint 105 disposed in the wedge block 103.

Further, the movable dovetail groove plate 303 is fixed with the guide screw 304 through threads, so that the movable dovetail groove plate 303 can be detached and replaced conveniently.

Claims (3)

1. The utility model provides a movable dovetail work piece fixing device, includes fixed work platform, its characterized in that: the fixed workbench is provided with a pushing cylinder and two jacking cylinders, the pushing cylinder is horizontally fixed on the bottom surface of the middle part of the fixed workbench, the upper parts of the two jacking cylinders are vertically fixed on the bottom surface of the fixed workbench and symmetrically arranged on two sides of the pushing cylinder, square through holes are respectively arranged in the fixed workbench at positions corresponding to piston rods of the two jacking cylinders and the pushing cylinder, positioning bosses are arranged around the square through holes at the positions of the two jacking cylinders, the positioning bosses are fixedly arranged on the table surface of the fixed workbench, wedge-shaped chock blocks are fixedly connected with the end parts of piston rods of the jacking cylinders, the jacking cylinders drive the wedge-shaped chock blocks to move up and down in the square through holes, connecting blocks are fixedly arranged at the end parts of the piston rods of the pushing cylinders, the connecting blocks are positioned in the square through holes, and the tops of the connecting blocks extend out of the square through holes, the pushing cylinder drives the connecting block to reciprocate parallel to the table surface of the fixed working table, a movable tool plate is arranged on the fixed working table and is attached to the plane of the fixed working table, the movable tool plate comprises a movable table plate, a fixed dovetail groove plate, a movable dovetail groove plate and more than two guide screws, a through square hole corresponding to the square through hole is formed in the movable table plate, the movable tool plate is sleeved and connected with the positioning boss through the through square hole and is kept at a fixed position of the table surface of the fixed working table, the fixed dovetail groove plate is transversely arranged on one side of the through square hole and is fixedly connected to the movable table plate, the movable dovetail groove plate is transversely arranged on the other side of the through square hole corresponding to the fixed dovetail groove plate, and the contact surface of the movable dovetail groove plate and the wedge-shaped plug block is an inclined surface, the bottom of the movable dovetail groove plate is fixedly connected with one end of the guide screw, more than two guide grooves in number parallel to the movement direction of the piston rod of the pushing cylinder are arranged on the movable platen, the other end of the guide screw is slidably connected with the guide grooves, a connecting groove is arranged in the middle of the bottom surface of the movable dovetail groove plate, and the connecting groove is connected with the connecting block in a sleeved mode.

2. The movable dovetail groove workpiece fixture of claim 1, wherein: the jacking cylinder is connected with the wedge-shaped chock block through a T-shaped joint arranged in the wedge-shaped chock block.

3. The movable dovetail groove workpiece fixture of claim 1, wherein: the movable dovetail groove plate is fixed with the guide screw through threads.

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