CN211614954U

CN211614954U - Clamping and positioning device for special machine tool for machining double heads of automobile yoke

Info

Publication number: CN211614954U
Application number: CN202020144040.4U
Authority: CN
Inventors: 刘晨; 胡文民
Original assignee: Zhejiang Lanxi Haiju Intelligent Equipment Co ltd
Current assignee: Zhejiang Lanxi Haiju Intelligent Equipment Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-10-02
Anticipated expiration: 2030-01-22

Abstract

The utility model provides a centre gripping positioner that special machine tool was used in processing of car festival fork double-end belongs to machining technical field. It has solved current car yoke centre gripping processing problem. The utility model discloses a location platform and corner hydro-cylinder are equipped with first concave tang on the locating surface of location platform, are equipped with first convex tang on the pitch fork chassis, and first convex tang and first concave tang clearance fit and both all are circularly, are equipped with the presser foot on the corner hydro-cylinder, and centre gripping positioner still includes one and dials the device, should dial the device and include slide and shifting block, set up the V-arrangement groove that the opening is down on the shifting block. The utility model has the advantages of the cooperation lathe is used, can fix the festival fork to can dial the festival fork and make the hole on it align with the lathe main shaft is concentric.

Description

Clamping and positioning device for special machine tool for machining double heads of automobile yoke

Technical Field

The utility model belongs to the technical field of machining, concretely relates to centre gripping positioner that special lathe was used is processed to car festival fork double-end.

Background

A joint fork used on an automobile is a connecting transmission part and comprises a chassis and two lug rings arranged on the chassis at intervals, wherein holes are formed in the lug rings, the lug rings are of symmetrical structures and are narrow in upper parts and wide in lower parts, the two holes need to be bored and grooved, and certain coaxiality needs to be guaranteed after fine machining of the two holes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the processing technical requirement to current car festival fork, and the cooperation lathe that provides uses, can fix festival fork to can dial the centre gripping positioner that the festival fork made hole and the concentric alignment of lathe main shaft on it.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a centre gripping positioner that special machine tool was used is processed to car festival fork double-end, sets up on the workstation of lathe, and it includes a fixed locating platform that sets up and a plurality of corner hydro-cylinders that set up along locating platform circumference, and the locating surface of locating platform is for being used for placing the festival fork, is equipped with recessed first concave spigot on the locating surface, is equipped with protruding first convex spigot down on the festival fork chassis, and first convex spigot and first concave spigot clearance fit and both are circular, and the corner hydro-cylinder is equipped with two at least, is equipped with the presser foot that is used for pushing down the festival fork chassis on the corner hydro-cylinder, centre gripping positioner still includes one and dials the device, should dial the device and include a slide that can the relative positioning platform up-and-down motion and fix the shifting block on the slide, set up the V-shaped groove that the opening is down on the shifting block.

The festival fork is guaranteed through first protruding tang and first concave tang and is fixed a position with the location platform is concentric, and clearance fit also can the relative positioning platform rotate when making the festival fork location, and the corner hydro-cylinder is fixed the festival fork through pushing down the chassis, and the V-arrangement groove is under the narrow width structure, and with earrings appearance phase-match, V-arrangement groove and earrings lock contact in-process are dialled the festival fork through rotating the festival fork.

In foretell centre gripping positioner that special lathe was used in processing of a car festival fork double-end, set up down the keyway on the workstation, the keyway is mutually perpendicular with the projection of the symmetric center of above-mentioned V-arrangement groove on the horizontal plane down, keyway fit down is equipped with the navigation key, above-mentioned navigation platform can be dismantled with the workstation and be connected, set up first keyway on the navigation platform bottom surface, above-mentioned corner hydro-cylinder sets up on the workstation through a backing plate, backing plate and corner hydro-cylinder one-to-one set up, the backing plate can be dismantled and fix on the workstation, the bottom at the corner hydro-cylinder is fixed to the backing plate, keyway on the second has been seted up on the backing plate bottom surface, the navigation key all cooperates the connection location with first keyway, keyway.

In the clamping and positioning device for the double-head processing special machine tool for the automobile section fork, two corner oil cylinders are arranged, and when the section fork is fixed, the center of the section fork chassis is positioned on the center connecting line of the presser feet of the two corner oil cylinders.

In foretell centre gripping positioner that special machine tool was used in processing of automobile festival fork double-end, the location platform is including the upper stage body and the lower stage body that set up with one heart from top to bottom, and the upper stage body passes through the fastener with lower stage body and can dismantle the connection, and above-mentioned locating surface is located the upper stage body, is equipped with the concave tang of concave second on the upper stage body, is equipped with the convex tang of second of epirelief on the lower stage body, and the cooperation of the convex tang of second sets up in the concave tang of second. The upper table body is detachable, and the upper table body with corresponding size can be matched and installed aiming at the joint forks with different sizes.

In the clamping and positioning device for the double-head processing special machine tool for the automobile yoke, the first female spigot and the symmetrical center of the projection of the V-shaped groove on the horizontal plane are superposed.

In the clamping and positioning device for the automobile yoke double-end processing special machine tool, the V-shaped grooves and the yoke earrings are arranged in a one-to-one correspondence manner, and the length of each V-shaped groove is greater than the width of each yoke earring.

In the clamping and positioning device for the double-head processing special machine tool for the automobile yoke, the shifting block is separated from the yoke when the yoke is processed.

Compared with the prior art, the positioning table and the corner oil cylinder of the utility model are positioned with the workbench through the lower key groove and the positioning key, the mounting position is accurate, and the processing precision of the joint fork is ensured; the shifting block can shift the joint fork right by rotating the joint fork, so that a hole of the joint fork is concentric with a main shaft of a machine tool, and the machining precision is ensured; during machining, the joint fork chassis is fixed through the corner oil cylinder, the shifting block is separated from the joint fork, the earrings are machined in a free state, and machining precision is guaranteed.

Drawings

FIG. 1 is a schematic view of a yoke;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural diagram of the present invention installed on a machine tool.

In the figure, 1, a base; 2. a first main shaft; 3. a variable frequency motor; 4. a second main shaft; 5. a servo motor; 6. a third main shaft; 7. a work table; 8. a corner oil cylinder; 9. an upper table body; 10. a lower table body; 11. a first male end; 12. a presser foot; 13. a lower keyway; 14. a base plate; 15. a second upper keyway; 16. a column; 17. a slide base; 18. shifting blocks; 19. a chassis; 20. an ear ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, the utility model provides a pair of centre gripping positioner that special machine tool was used is processed to car festival fork double-end sets up on the workstation 7 of processing ears festival fork lathe, and the lathe includes base 1 and sets up the relative main shaft unit that sets up about two sets of on base 1, and each main shaft unit all includes two sets of main shaft assembly, and four sets of main shaft assembly divide first main shaft assembly, second main shaft assembly and two third main shaft assembly:

the first main shaft assembly is positioned at the left front part and comprises a first main shaft box, a first main shaft 2 which is rotatably arranged on the first main shaft box and a first driving mechanism which drives the first main shaft 2 to rotate, a rough boring cutter is arranged at the right end of the first main shaft 2, the first driving mechanism is a variable frequency motor 3, and the variable frequency motor 3 is in transmission connection with the first main shaft 2 through a belt pulley group;

the second spindle assembly is positioned at the right front part and comprises a second spindle box, a second spindle 4 rotationally arranged on the second spindle box and a second driving mechanism for driving the second spindle 4 to rotate, the first spindle 2 and the second spindle 4 are concentric, a fine boring cutter is arranged at the left end of the second spindle 4, the second driving mechanism is a servo motor 5, the servo motor 5 is in transmission connection with the second spindle 4 through a belt pulley group, and the rotating speed of the second spindle 4 is greater than that of the first spindle 2;

the two third main shaft assemblies are respectively arranged at the left rear part and the right rear part, each third main shaft assembly comprises a third main shaft box, a third main shaft 6 rotationally arranged on the third main shaft box and a third driving mechanism for driving the third main shaft 6 to rotate, the two third main shafts 6 are concentric, the projections of the axial leads of the third main shaft 6 and the first main shaft 2 on the horizontal plane are mutually parallel, a slotting cutter is arranged on the third main shaft 6, the third driving mechanism is a variable frequency motor 3, and the variable frequency motor 3 is in transmission connection with the third main shaft 6 through a belt pulley set;

each main shaft box can axially slide back and forth along the corresponding main shaft under the drive of an X-direction driving mechanism, the X-direction driving mechanisms are arranged in one-to-one correspondence with the main shaft boxes, and each X-direction driving mechanism comprises a ball screw pair and a motor.

The workbench 7 can horizontally slide back and forth relative to the base 1, the workbench 7 is positioned between the two spindle units, the sliding direction of the workbench 7 is vertical to the projection of the sliding direction of the spindle box on the horizontal plane, the workbench 7 slides back and forth under the drive of a Y-direction driving mechanism, and the Y-direction driving mechanism comprises a ball screw pair and a motor.

The clamping and positioning device comprises a positioning table fixed on the workbench 7 and two corner oil cylinders 8 arranged along the circumferential direction of the positioning table, the positioning table comprises an upper table body 9 and a lower table body 10 which are concentrically arranged up and down, the upper table body 9 and the lower table body 10 are detachably connected through fasteners such as bolts, a second concave seam allowance which is concave upwards is arranged on the upper table body 9, a second convex seam allowance which is convex upwards is arranged on the lower table body 10, the second concave seam allowance and the second convex seam allowance are both circular, the second convex seam allowance is concentrically matched and inserted in the second concave seam allowance, and the two are in clearance fit or transition fit; the top surface of the upper table body 9 is a positioning surface for placing a joint fork, a first concave spigot is arranged on the positioning surface, a first convex spigot 11 which is convex downwards is arranged on the bottom surface of the joint fork chassis 19 in a matching way, the first convex spigot 11 and the first concave spigot are in clearance fit and are both circular, a presser foot 12 for pressing the joint fork chassis 19 downwards is arranged on the corner oil cylinder 8, the presser foot 12 is circular, the presser foot 12 can rotate and move up and down under the driving of the corner oil cylinder 8, and when the joint fork is fixed, the two presser feet 12 are respectively arranged on the diagonal line of the joint fork chassis 19;

the workbench 7 is also provided with a linear lower key groove 13, the length direction of the lower key groove 13 is consistent with the sliding direction of the workbench 7, a positioning key is arranged in the lower key groove 13 in a matching manner, the lower workbench body 10 is detachably connected with the workbench 7 through a fastener, the bottom surface of the lower workbench body 10 is provided with a first upper key groove, the positioning key is simultaneously matched in the first upper key groove, and the left and right positions of the positioning workbench relative to the workbench 7 are fixed through the matching and limiting of the first upper key groove and the positioning key;

the corner oil cylinder 8 is arranged on the workbench 7 through a base plate 14, the base plate 14 and the corner oil cylinder 8 are arranged in a one-to-one correspondence mode, the base plate 14 is detachably fixed on the workbench 7 through a fastener, the base plate 14 is fixed at the bottom of the corner oil cylinder 8, a second upper key groove 15 is formed in the bottom surface of the base plate 14, a positioning key is simultaneously matched in the second upper key groove 15, the second upper key groove 15 is matched with the positioning key in a limiting mode, and the base plate 14 is fixed in position relative to the left and right of the workbench 7.

An upright post 16 is also fixedly arranged on the workbench 7, a correcting device is arranged on the upright post 16, the correcting device comprises a sliding seat 17 arranged on the upright post 16 in a sliding manner and a shifting block 18 fixed on the sliding seat 17, the sliding block slides up and down back and forth under the driving of a Z-direction driving mechanism, the Z-direction driving mechanism is an oil cylinder or an air cylinder, the cylinder body of the oil cylinder is fixed on the upright post 16, and the piston rod of the oil cylinder is fixedly connected with the sliding seat 17;

the shifting block 18 is provided with a V-shaped groove with a downward opening, the V-shaped grooves and the yoke earrings 20 are arranged in a one-to-one correspondence manner, the two V-shaped grooves extend along the axial direction of the main shaft, the length of the V-shaped groove is greater than the width of the yoke earrings 20, the axial projection of the main shaft of the V-shaped groove is in a V shape, and the symmetrical centers of the projections of the first concave spigot and the V-shaped groove on the horizontal plane are superposed.

The machine tool also comprises a control system which controls the devices and mechanisms to work in a coordinated manner.

The processing process comprises the following steps: firstly, moving a workbench 7 through a Y-direction driving mechanism, enabling a shifting block 18 to move to a position where the symmetrical center of a V-shaped groove of the shifting block coincides with the axis of a first main shaft 2 in projection on the horizontal plane, enabling the shifting block 18 to be located at the highest position, then placing a yoke on a positioning plane, enabling a hole in an ear ring 20 of the yoke to be approximately concentric with a main shaft hole, then enabling the shifting block 18 to move downwards, enabling the V-shaped groove to be buckled on a corresponding ear ring 20, enabling the shifting block 18 to correct the yoke by rotating the yoke, enabling the hole in the yoke to be concentric with the first main shaft 2, then enabling two corner oil cylinders 8 to drive a pressure foot 12 on the shifting block to rotate to the upper side of the pressing position of a chassis 19 and press downwards, enabling the shifting block 18 to move upwards after the chassis 19 is pressed by the pressure foot 12, enabling the first main shaft 2 to move rightwards along with the first main; after the rough boring is finished, the rough boring cutter exits from the machining area along with the first main shaft 2, then the second main shaft 4 moves leftwards along with the second main shaft box to feed, and two holes in the yoke are finely bored in sequence; after the finish boring is finished, the finish boring cutter exits from the machining area along with the second spindle 4, then the workbench 7 moves backwards to enable the holes in the pitch fork to be concentric with the third spindles 6, then the two third spindles 6 move along with the third spindle box and feed simultaneously, the two holes are grooved respectively until the grooving is finished, and the grooving cutter exits from the machining area, so that the machining is finished.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A clamping and positioning device for a special machine tool for processing double heads of automobile yokes is arranged on a workbench (7) of the machine tool and is characterized by comprising a fixedly arranged positioning table and a plurality of corner oil cylinders (8) arranged along the circumferential direction of the positioning table, the top surface of the positioning table is a positioning surface for placing yokes, a concave first concave spigot is arranged on the positioning surface, a convex first convex spigot (11) is arranged on a yoke chassis (19), the first convex spigot (11) is in clearance fit with the first concave spigot and is both circular, at least two corner oil cylinders (8) are arranged, a presser foot (12) for pressing the yoke chassis (19) is arranged on the corner oil cylinder (8), the clamping and positioning device further comprises a correcting device, the correcting device comprises a sliding seat (17) capable of moving up and down relative to the positioning table and a shifting block (18) fixed on the sliding seat (17), the shifting block (18) is provided with a V-shaped groove with a downward opening.

2. The clamping and positioning device for the double-head processing special machine tool of the automobile yoke according to claim 1, it is characterized in that the workbench (7) is provided with a lower key groove (13), the lower key groove (13) is vertical to the projection of the symmetrical center of the V-shaped groove on the horizontal plane, a positioning key is arranged in the lower key groove (13) in a matching way, the positioning table is detachably connected with the workbench (7), a first upper key groove is arranged on the bottom surface of the positioning table, above-mentioned corner hydro-cylinder (8) set up on workstation (7) through a backing plate (14), backing plate (14) and corner hydro-cylinder (8) one-to-one setting, backing plate (14) can be dismantled and fix on workstation (7), and backing plate (14) are fixed in the bottom of corner hydro-cylinder (8), and keyway (15) on the second have been seted up on backing plate (14) bottom surface, and the equal cooperation of keyway (15) is connected the location on navigation key and first last keyway, the second.

3. The clamping and positioning device for the double-head processing special machine tool of the automobile fork as claimed in claim 1 or 2, characterized in that the number of the corner cylinders (8) is two, and when the fork is fixed, the center of the fork chassis (19) is positioned on the central line of the presser feet (12) of the two corner cylinders (8).

4. The clamping and positioning device for the double-head processing special machine tool for the automobile yoke according to claim 1 or 2, wherein the positioning table comprises an upper table body (9) and a lower table body (10) which are concentrically arranged up and down, the upper table body (9) and the lower table body (10) are detachably connected through a fastener, the positioning surface is positioned on the upper table body (9), a second concave spigot which is concave upwards is arranged on the upper table body (9), a second convex spigot which is convex upwards is arranged on the lower table body (10), and the second convex spigot is arranged in the second concave spigot in a matching manner.

5. The clamping and positioning device for the double-ended special machine tool for machining the automobile fork according to claim 1 or 2, wherein the first female spigot coincides with a center of symmetry of a projection of the V-shaped groove on a horizontal plane.

6. The clamping and positioning device for the double-end processing special machine tool of the automobile fork according to claim 1 or 2, characterized in that the V-shaped grooves are arranged in one-to-one correspondence with the fork earrings (20), and the length of the V-shaped grooves is greater than the width of the fork earrings (20).

7. The clamping and positioning device for the double-head processing special machine tool of the automobile yoke is characterized in that the shifting block (18) is separated from the yoke during yoke processing.