CN215251017U - Positioning fixture for thermal treatment of inner side wall of through hole - Google Patents

Abstract

The application relates to a positioning clamp for heat treatment of the inner side wall of a through hole, which relates to the technical field of positioning clamps, which comprises a butt joint plate, wherein a positioning column is arranged on the butt joint plate, the axial direction of the positioning column is parallel to the axial direction of the butt joint plate, the positioning column penetrates through the butt joint plate along the thickness direction of the butt joint plate, and is in inserting fit with the abutting plate, the positioning column is positioned at one side of the abutting plate in the thickness direction, a limit column is also arranged at one side of the abutting plate along the thickness direction of the abutting plate, which is far away from the positioning column, the limiting column and the positioning column are coaxially arranged, the positioning column is penetrated through the limiting column to one side close to the positioning column along the axis direction of the limiting column, and with the cooperation of pegging graft of reference column, spacing post is located the lateral wall and the through-hole inside wall butt of the butt joint board along the thickness direction one side that deviates from the reference column, still be provided with the closing device who is used for compressing tightly special-shaped part on the butt joint board. The quenching device has the effects of conveniently positioning the special-shaped parts and ensuring the quenching quality.

Description

Positioning fixture for thermal treatment of inner side wall of through hole

Technical Field

The application relates to the technical field of positioning fixtures, in particular to a positioning fixture for heat treatment of the inner side wall of a through hole.

Background

In order to change a certain property on the surface or inside of the metal part, the steel part is heated, insulated and cooled in a solid state in a proper mode to obtain the required structure and property.

In the related art, a profile part 100, see fig. 1, includes a base 110 and a mounting base 130 that are integrally formed. One side of the base 110 in the length direction is provided with a through hole 120, the through hole 120 penetrates through the base 110 in the thickness direction of the base 110, the mounting seat 130 is parallel to the thickness direction of the base 110, and the length direction of the mounting seat 130 is parallel to the width direction of the base 110. The mount 130 is disposed on a side of the base 110 facing away from the through-hole 120. In design requirements, the inner side wall of the through hole needs to be quenched to improve the surface hardness. And quenching the inner side wall of the through hole by using a vertical quenching machine tool by workers. The vertical quenching machine tool comprises a machine body, a sliding table, an induction heating device, a clamping rotating mechanism and the like. The sliding table is fixed on the lathe bed, the clamping and rotating mechanism comprises a rotating clamp, and the induction heating device comprises an induction coil. A worker directly clamps the special-shaped part by using the rotary fixture, the induction coil is inserted into the through hole in the vertical direction, the rotary fixture drives the special-shaped part to rotate around the axis direction of the induction coil, and the sliding table drives the induction coil to slide in the vertical direction, so that the inner side wall of the through hole of the special-shaped part is quenched.

Aiming at the related technologies, when a worker clamps a special-shaped part by using a rotary clamp, the part is special in shape, and the diameter of a tip used on a conventional quenching machine tool is smaller than that of a through hole, so that the through hole is difficult to position, and the defect that the quenching quality is influenced because an induction coil is in contact with the inner side wall of the through hole in the vertical moving process exists.

SUMMERY OF THE UTILITY MODEL

In order to conveniently locate the special-shaped part and ensure that the through hole to be quenched and the induction coil are coaxially arranged, the application provides a positioning clamp for heat treatment of the inner side wall of the through hole.

The application provides a positioning fixture for through-hole inside wall thermal treatment adopts following technical scheme:

the utility model provides a positioning fixture for through-hole inside wall thermal treatment, includes the butt plate, be provided with the reference column on the butt plate, the reference column sets up with the butt plate is coaxial, the reference column runs through the butt plate along butt plate thickness direction, and with the cooperation of pegging graft of butt plate, the reference column is located one side of butt plate thickness direction, the butt plate still is provided with spacing post along one side that its self thickness direction deviates from the reference column, spacing post and the coaxial setting of reference column, spacing post wears to establish the reference column to one side that is close to the reference column along its self axis direction to peg graft the cooperation with the reference column, spacing post is located the through-hole inside wall butt of lateral wall and special-shaped parts that the butt plate deviates from one side of reference column along thickness direction, still be provided with the closing device who is used for compressing tightly special-shaped parts on the butt plate.

Through adopting above-mentioned technical scheme, before the actual work, the staff places butt joint board and reference column fixed connection, with the reference column on rotary fixture, uses rotary fixture to step up the reference column, makes reference column and induction coil coaxial setting, and the butt plate is located the reference column upside, and the staff places special-shaped part on butt joint board, makes the base deviate from a side of mount pad and supports tightly on butt joint board. The staff wears to establish the through-hole with spacing post along through-hole axis direction, and spacing post lateral wall supports tightly with the through-hole inside wall to make through-hole and spacing coaxial setting of post. The lower end of the limiting column is in inserting fit with the positioning column, so that the limiting column and the positioning column are coaxially arranged. The staff compresses tightly special-shaped part through closing device, makes special-shaped part and butt relatively fixed, and the staff takes out spacing post from the through-hole again to accomplish special-shaped part's installation. A worker starts the vertical quenching machine tool, the rotary fixture drives the special-shaped part to rotate around the axis direction of the through hole, the sliding table drives the induction coil to move along the vertical direction, and the induction coil penetrates through the through hole to complete quenching of the special-shaped part. And the staff loosens the pressing device, so that the quenched special-shaped parts are taken down, the non-quenched special-shaped parts are placed on the abutting plate, and the operations are repeated, so that batch quenching of the special-shaped parts is completed.

Preferably, the reference column includes fixed cover and stop collar, stop collar and the coaxial setting of fixed cover, the stop collar is located fixed cover is close to one side of butt joint board along its self axis direction, the cooperation of pegging graft of stop collar and fixed cover along its self axis direction, the stop collar can be dismantled fixedly with fixed cover, the lower extreme and the stop collar lateral wall butt of spacing post lateral wall.

Through adopting above-mentioned technical scheme, the stop collar can be dismantled fixedly with fixed cover, and the staff can be through changing stop collar and supporting spacing post to make positioning fixture be applicable to the special-shaped part of different through-hole diameters, help improving positioning fixture's adaptability.

Preferably, the spacing post includes grafting section, butt section and compresses tightly the section, the grafting section diameter is less than the butt section diameter, the butt section diameter is less than and compresses tightly the section diameter, butt section lateral wall supports tightly with the through-hole inside wall, grafting section lateral wall supports tightly with the spacer sleeve inside wall, compress tightly one side that the section is close to the butt section and support tightly on a side that the base thickness direction is close to the mount pad.

Through adopting above-mentioned technical scheme, compress tightly the section and help guaranteeing spacing post and reference column relatively fixed, help reducing the staff when adjusting closing device, special-shaped part is to the lopsidedness that deviates from closing device, leads to a lateral wall extrusion spacing post of through-hole, and special-shaped part damage or through-hole and induction coil condition of disalignment take place.

Preferably, the junction of butt section and the section that compresses tightly still is provided with the conical surface, the conical surface is along one side that is close to the section that compresses tightly to the shrink setting of one side that is close to the grafting section, conical surface and one side edge that the through-hole deviates from the butt joint board support tightly.

Through adopting above-mentioned technical scheme, the conical surface helps further guaranteeing that through-hole and spacing post are coaxial to be set up, helps tightly special-shaped part to support simultaneously, helps further reducing the possibility that special-shaped part leaned away from one side slope of closing device.

Preferably, the pressing device comprises a pressing plate, the thickness direction of the pressing plate is parallel to that of the abutting plate, and a pressing assembly used for pressing the pressing plate on one side surface, away from the base, of the mounting seat is arranged on the pressing plate.

Through adopting above-mentioned technical scheme, the staff places special-shaped part on the butt plate, compresses tightly the subassembly through the regulation and makes the clamp plate compress tightly on special-shaped part to make special-shaped part and butt plate relatively fixed, the staff takes off the butt post, thereby fixes special-shaped part on rotary fixture.

Preferably, the pressing assembly comprises a fixing column, one end of the fixing column is fixedly connected with the abutting plate, the fixing column extends along one side, close to the abutting section, of the abutting plate in the thickness direction, the fixing column penetrates through the pressing plate in the thickness direction of the pressing plate, the fixing column is movably connected with the pressing plate, a tightening nut and a locking nut are further sleeved on the fixing column, the tightening nut and the locking nut are in threaded fit with the fixing column, the tightening nut is located between the pressing plate and the abutting plate, and the locking nut is located on one side, away from the abutting plate, of the pressing plate.

Through adopting above-mentioned technical scheme, the staff supports tight nut through rotating to adjust the position of clamp plate on the fixed column, the staff rotates the clamp plate, makes one side that the clamp plate deviates from the fixed column support tightly lie in the one side that base and mount pad junction deviate from the butt plate along base thickness direction at the mount pad, and lock nut is screwed up to the staff, thereby makes clamp plate and fixed column fixed connection, thereby makes special-shaped part and butt plate relatively fixed.

Preferably, still be provided with the regulation post on the clamp plate, regulation post one end can be dismantled fixedly with the clamp plate, be provided with the regulation hole on the butt plate, the regulation hole runs through the butt plate along butt plate thickness direction, the regulation hole is provided with a plurality ofly on the butt plate, the regulation post runs through arbitrary one regulation hole, and with the butt plate can be dismantled fixedly.

Through adopting above-mentioned technical scheme, the staff will adjust post and clamp plate and butt post fixed connection respectively to make the clamp plate form the lever between fixed column, regulation post and special-shaped part, thereby help improving the packing force of clamp plate, help guaranteeing that special-shaped part and butt plate are fixed relatively.

Preferably, be provided with waist type groove on the clamp plate, waist type groove runs through the clamp plate along clamp plate thickness direction, waist type groove length direction is parallel with clamp plate length direction, adjust the pole and run through waist type groove along its self axis direction, it is equipped with lock nut still to overlap on the regulation post, lock nut is located one side that clamp plate thickness direction deviates from the butt joint board, lock nut supports tightly on a side that the clamp plate thickness direction deviates from the butt joint board.

Through adopting above-mentioned technical scheme, the staff will adjust post and butt plate fixed connection, will adjust the post upper end and pass the kidney-shaped groove, establish locking nut cover on adjusting the post, screw up locking nut to make clamp plate and regulation post relatively fixed. The waist-shaped groove is convenient for workers to adjust the angle and the position of the pressing plate according to the shape of the special-shaped part, so that the positioning clamp is suitable for special-shaped parts with different sizes and shapes.

Preferably, a plurality of positioning holes are formed in the abutting plate, any one of the positioning holes penetrates through the abutting plate along the thickness direction of the abutting plate, and the fixing column penetrates through any positioning hole along the thickness direction of the abutting plate and is detachably fixed with the abutting plate.

Through adopting above-mentioned technical scheme, the staff is through adjusting the position of fixed column on the butt plate, adjusts the relative position of clamp plate and butt plate to help further improve positioning fixture's adaptability.

Preferably, the pressing device comprises a horizontal quick clamp, a base of the horizontal quick clamp is fixedly connected with the abutting plate, the horizontal quick clamp comprises a rubber pad arranged at the chuck, and the rubber pad abuts against one side surface, away from the base, of the mounting seat.

Through adopting above-mentioned technical scheme, horizontal active grab helps improving the speed that the staff compressed tightly and unclamped special-shaped parts, helps improving the speed of staff dismouting special-shaped parts to help improving work efficiency, reduction in production cost.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by means of the limiting columns and the positioning columns which are in plug-in fit, the abutting plates and the pressing devices, the axial lines of the through holes can be conveniently positioned by workers, and the axial lines of the through holes and the induction coils are coaxially arranged, so that special-shaped parts can be conveniently positioned, and the quenching quality of the inner side walls of the through holes can be guaranteed;

2. the adaptability of the positioning clamp can be adjusted by means of the replaceable limiting sleeve, the replaceable limiting column and the adjustable pressing device;

3. with the help of compressing tightly the section, help reducing the damage of spacing post to the reference column, help guaranteeing special-shaped parts's quality.

Drawings

FIG. 1 is a schematic axial view mainly showing the overall structure of a special-shaped part in the related art;

FIG. 2 is a schematic axial view of a positioning jig for heat treatment of an inner sidewall of a through-hole according to embodiment 1 of the present application;

fig. 3 is an axial side exploded view mainly showing the structure of the positioning column and the spacing column in embodiment 1 of the present application;

fig. 4 is a sectional view of an axial side of a structure mainly embodying a positioning post, a limit post and a contact plate in embodiment 1 of the present application;

fig. 5 is an enlarged view of a portion a in fig. 4, mainly showing the structure of the stop collar, the fixing sleeve and the abutting plate;

fig. 6 is an exploded view of the shaft side mainly embodying the overall structure of the pressing device in embodiment 1 of the present application;

fig. 7 is an exploded view of the shaft side mainly embodying the overall structure of the pressing device in embodiment 2 of the present application;

fig. 8 is a schematic axial view mainly showing the overall structure of the pressing device in embodiment 3 of the present application.

Reference numerals: 1. a butt joint plate; 11. mounting holes; 12. positioning holes; 13. an adjustment hole; 2. a positioning column; 21. a limiting hole; 22. fixing a sleeve; 221. a fixed section; 222. a limiting section; 223. a positioning section; 224. inserting holes; 23. a limiting sleeve; 231. mounting a plate; 232. positioning blocks; 3. a limiting column; 31. a plug section; 32. an avoidance groove; 33. an abutment section; 34. a conical surface; 35. a compacting section; 36. mounting blocks; 4. a pressing device; 41. pressing a plate; 411. a waist-shaped groove; 412. an abutting surface; 42. fixing a column; 421. tightly abutting the nut; 422. locking the nut; 423. a limit nut; 43. an adjustment column; 431. a locking nut; 432. mounting a nut; 44. horizontal quick clamp; 441. a base; 442. a wrench; 443. a chuck; 100. special-shaped parts; 110. a base; 120. a through hole; 130. and (7) mounting a seat.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses a positioning fixture for heat treatment of the inner side wall of a through hole.

Example 1:

referring to fig. 2 and 3, the positioning fixture for heat treatment of the inner side wall of the through hole comprises a butt plate 1, the butt plate 1 is horizontally arranged, a positioning column 2 is arranged on one side of the butt plate 1 in the thickness direction, and the positioning column 2 penetrates through the butt plate 1 along the butt plate 1 in the thickness direction and is fixedly connected with the butt plate 1. One side of the positioning column 2 close to the abutting plate 1 is further provided with a limiting column 3, and the limiting column 3 extends towards one side back from the positioning column 2 along the thickness direction of the abutting plate 1. The positioning column 2 is provided with a limiting hole 21, the limiting hole 21 penetrates through the positioning column 2 along the thickness direction of the abutting plate 1, the limiting hole 21 and the positioning column 2 are coaxially arranged, and the limiting column 3 is in inserting fit with the limiting hole 21. One side of the abutting plate 1 deviating from the positioning column 2 in the thickness direction is further provided with a pressing device 4.

In the debugging operation, the staff adopts rotary fixture to press from both sides tight reference column 2, make reference column 2 and induction coil coaxial arrangement, place odd-shaped part 100 on butt board 1, make a side that base 110 deviates from mount pad 130 support tightly on butt board 1, use spacing post 3 to insert through-hole 120, make the week side of spacing post 3 support tightly on through-hole 120 lateral wall, make spacing post 3 and spacing hole 21 grafting cooperation on the reference column 2, reuse closing device 4 compresses tightly mount pad 130 in the both sides of mount pad 130 width direction respectively, thereby fix odd-shaped part 100 on butt board 1, take off spacing post 3 again, thereby the through-hole 120 and the coaxial arrangement of induction coil of having guaranteed odd-shaped part 100.

In actual production, the staff drives the induction coil to move in the through hole 120 along the vertical direction through the sliding table, so that quenching of the through hole 120 is completed. The worker loosens the pressing device 4 again, takes off the quenched special-shaped part 100, places another non-quenched special-shaped part 100 on the butt plate 1, repeats the above operation, and quenches the inner side wall of the through hole 120 of the special-shaped part 100. In this way, the through hole 120 of the special-shaped part 100 can be conveniently positioned by a worker, and the induction coil is helped to be prevented from contacting with the inner side wall of the through hole 120 when moving in the vertical direction. Meanwhile, the induction coil is beneficial to reducing the difference of the distances between the induction coil and the inner side wall of the through hole 120, so that the hardness of the inner side wall of the through hole 120 after quenching is different, and the quenching quality is influenced.

Specifically, referring to fig. 3 and 4, the positioning column 2 includes a fixing sleeve 22 and a position-limiting sleeve 23, the fixing sleeve 22 includes a fixing section 221, a position-limiting section 222 and a positioning section 223 which are integrally formed, the fixing section 221, the position-limiting section 222 and the positioning section 223 are coaxially arranged, the diameter of the position-limiting section 222 is larger than that of the fixing section 221, and the diameter of the positioning section 223 is smaller than that of the position-limiting section 222. The spacing section 222 is located between the fixing section 221 and the positioning section 223, and the positioning section 223 is located on one side of the positioning column 2 close to the contact plate 1. Still be provided with mounting hole 11 on butt joint board 1, mounting hole 11 and the coaxial setting of butt joint board 1, mounting hole 11 runs through butt joint board 1 along 1 thickness direction of butt joint board. The location section 223 of reference column 2 is along 1 thickness direction of butt joint board and mounting hole 11 grafting cooperation, and spacing section 222 is close to a side terminal surface of location section 223 and supports tightly on the side of 1 thickness direction of butt joint board, and butt joint board 1 passes through countersunk head bolt and spacing section 222 fixed connection. In actual work, a worker tightly presses the clamping jaws of the rotary fixture against the peripheral side surface of the positioning section 223, so that the upper side surface of the rotary fixture tightly presses against the end surface of one side of the limiting section 222, which is close to the positioning section 223. Through the fixed reference column 2 of this kind of mode, help further guaranteeing reference column 2 and induction coil coaxial setting, help improving the stability of butt joint board 1 on rotary fixture simultaneously, help guaranteeing that butt joint board 1 is the level setting, help reducing the special-shaped part 100 focus and not on rotary fixture's rotation axis, lead to special-shaped part 100 to rotate the in-process, the possibility of butt joint board 1 slope.

Referring to fig. 3 and 5, the positioning column 2 is further provided with an insertion hole 224, the insertion hole 224 penetrates through the positioning column 2 along the axial direction of the positioning column 2, and the insertion hole 224 is coaxial with the positioning column 2. Stop collar 23 includes integrated into one piece's mounting panel 231 and locating piece 232, and mounting panel 231 thickness direction is parallel with 1 thickness direction of butt plate, and locating piece 232 is located one side of mounting panel 231 thickness direction, and mounting panel 231 pegs graft along 1 thickness direction of butt plate with mounting hole 11 and cooperates, and locating piece 232 pegs graft along 1 thickness direction of butt plate with spliced eye 224 and cooperates. The outer side surface of the positioning block 232 is tightly abutted against the inner side wall of the insertion hole 224, one side surface of the mounting plate 231 close to the positioning block 232 is tightly abutted against one side surface of the positioning section 223 departing from the limiting section 222 along the axis direction of the mounting plate 231, and the upper side surface of the mounting plate 231 is coplanar with the upper side surface of the abutting plate 1. The mounting plate 231 is fixedly connected to the positioning segment 223 by a countersunk bolt. The limiting hole 21 is located on the limiting sleeve 23, the limiting hole 21 penetrates through the limiting sleeve 23 along the axis direction of the limiting hole 21, and the limiting hole 21 and the positioning block 232 are coaxially arranged.

Referring to fig. 3, fig. 4, spacing post 3 includes integrated into one piece's grafting section 31, butt section 33 and compresses tightly section 35, and grafting section 31, butt section 33 and the equal coaxial setting of section 35 that compresses tightly, and grafting section 31 diameter is less than butt section 33 diameter, and butt section 33 diameter is less than and compresses tightly section 35 diameter. The inserting section 31 and the limiting hole 21 are inserted and matched along the thickness direction of the abutting plate 1, the peripheral side face of the inserting section 31 is abutted against the inner side wall of the limiting hole 21, and the peripheral side face of the abutting section 33 is abutted against the inner side wall of the through hole 120. Still be provided with on the spacing post 3 and dodge groove 32, dodge groove 32 and wear to establish spacing post 3 from bottom to top along 3 axis directions of spacing post, dodge groove 32 and respectively be provided with one in the both sides of 3 arbitrary radial directions of spacing post, two one sides of dodging groove 32 and deviating from each other are and open the setting. The avoiding groove 32 helps to reduce the contact area between the limiting column 3 and the through hole 120, and helps to reduce the occurrence of the clamping condition between the limiting column 3 and the through hole 120 in the process of inserting the limiting column 3 while ensuring the positioning of the through hole 120.

The junction shaping of butt section 33 and pressing section 35 has conical surface 34, and conical surface 34 sets up to the one side that is close to butt section 33 from being close to pressing section 35 to the shrink of one side of being close to along spacing post 3 axis direction. The tapered surface 34 abuts against a side of the through hole 120 close to the mounting seat 130 in the axial direction. In the installation process, the worker wears the special-shaped part 100 from the through hole 120 with the limiting column 3, make the grafting section 31 and the cooperation of pegging graft of spacing hole 21, continue to push down limiting column 3, until conical surface 34 corresponds the side butt with the through hole 120, help making limiting column 3 be adapted to the through hole 120 in the design tolerance scope, guarantee through hole 120 and the coaxial setting of limiting column 3, simultaneously, conical surface 34 can change the angle of frictional force between limiting column 3 and the through hole 120, thereby help improving the static frictional force component force along the radial direction of through hole 120 between limiting column 3 and the through hole 120 lateral wall, help reducing the staff when using compressing assembly to compress tightly mount pad 130, the one end that the base 110 deviates from mount pad 130, the condition that the one end that has through hole 120 receives the effort tilt up takes place promptly, help improving in the installation process, the stability of special-shaped part 100 on positioning fixture.

One side that spacing post 3 deviates from reference column 2 along 1 thickness direction of butt joint board is provided with installation piece 36, and the diameter of installation piece 36 is greater than the diameter that spacing post 3 compresses tightly section 35. In the actual work, the staff can take out and prevent spacing post 3 through installation piece 36, makes things convenient for the staff to operate, reduces spacing post 3 and blocks with through-hole 120, and the difficult condition of taking out of spacing post 3 takes place.

Referring to fig. 2 and 6, the pressing device 4 includes a pressing plate 41, and a thickness direction of the pressing plate 41 is parallel to a thickness direction of the abutting plate 1. The pressing plate 41 is located on one side of the mounting seat 130 along the width direction of the base 110, one side of the pressing plate 41 close to the mounting seat 130 is provided with an abutting surface 412, the abutting surface 412 is located on one side of the pressing plate 41 close to the abutting plate 1 in the thickness direction, the abutting surface 412 abuts against one side of the mounting seat 130 away from the abutting plate 1 in the thickness direction of the base 110, and the abutting surface 412 is located on one side of the joint of the mounting seat 130 and the base 110 away from the abutting plate 1 in the thickness direction of the base 110. In this way, the stability of the special-shaped part 100 on the butt plate 1 is ensured, and the possibility that the position of the special-shaped part 100 is deviated in the process of rotating the positioning clamp by the rotating clamp is reduced. The abutting surface 412 helps to reduce the surface to be processed of the pressure plate 41, and reduces the production cost of the positioning jig.

The pressing plate 41 is provided with a fixing column 42, the axial direction of the fixing column 42 is parallel to the thickness direction of the abutting plate, and the lower end of the fixing column 42 is fixedly connected with the abutting plate 1. The upper ends of the fixing posts 42 penetrate the pressing plate 41 in the direction of its own axis. The fixing column 42 is sleeved with a tightening nut 421 and a locking nut 422, and the tightening nut 421 and the locking nut 422 are in threaded fit with the fixing column 42. The abutting nut 421 is located between the pressing plate 41 and the abutting plate 1, one side of the pressing plate 41 close to the abutting plate 1 in the thickness direction abuts against the abutting nut 421, the locking nut 422 is located on one side of the pressing plate 41 departing from the abutting plate 1, and one side of the locking nut 422 close to the pressing plate 41 in the thickness direction abuts against the pressing plate 41. The worker adjusts the position of the pressing plate 41 by adjusting the positions of the abutting nut 421 and the locking nut 422 on the fixing column 42, so that the pressing plate 41 presses the special-shaped part 100.

Be provided with regulation hole 13 on butt joint board 1, regulation hole 13 runs through butt joint board 1 along 1 thickness direction of butt joint board, and regulation hole 13 is provided with a plurality ofly on butt joint board 1. The pressing plate 41 is further provided with an adjusting column 43, the axial direction of the adjusting column 43 is parallel to the thickness direction of the abutting plate 1, the lower end of the adjusting column 43 penetrates through the adjusting hole 13 along the self axial direction, the lower end of the adjusting column 43 is sleeved with an installation nut 432, and the installation nut 432 is in threaded fit with the adjusting column 43. One side of the mounting nut 432 close to the abutting plate 1 in the thickness direction abuts against the abutting plate 1.

The pressing plate 41 is further provided with a waist-shaped groove 411, the length direction of the waist-shaped groove 411 is parallel to the length direction of the pressing plate 41, and the waist-shaped groove 411 penetrates through the waist-shaped groove 411 along the thickness direction of the pressing plate 41. The upper end of the adjusting column 43 penetrates through the waist-shaped groove 411 along the axis direction of the adjusting column, a locking nut 431 is further sleeved on the adjusting column 43, and the locking nut 431 is in threaded fit with the adjusting column 43. One side surface in the thickness direction of the lock nut 431 abuts against one side of the pressure plate 41, which is away from the abutting plate 1 in the thickness direction of the abutting plate 1. The pressing device 4 is provided in plurality, two in the present embodiment, on the abutment plate 1.

In the debugging operation, the worker moves the pressing plate 41 according to the size and the shape of different special-shaped parts 100, so that one side of the pressing plate 41 with the abutting surface 412 is erected on the parts, the adjusting column 43 is installed again, the adjusting column 43 penetrates through the corresponding adjusting hole 13, and the locking nut 422, the installing nut 432 and the locking nut 431 are screwed down, so that the special-shaped parts 100 are abutted to the abutting plate 1 by the pressing plate 41.

The implementation principle of the embodiment 1 is as follows: in the debugging operation, the staff changes the stop collar 23 and the stop post 3 of different sizes according to the size of the through hole 120 of the special-shaped part 100, and fixedly connects the stop collar 23 and the fixed sleeve 22. The staff places the positioning fixture on the rotary fixture, makes the clamping jaw of the rotary fixture support tightly on the circumference side of the positioning section 223, makes the upper side of the rotary fixture support tightly on the end face of one side of the limiting section 222 close to the positioning section 223, and the staff unscrews the lock nut 422, the mounting nut 432 and the lock nut 431, so that the pressing plate 41 can freely move on the fixed column 42, and the adjusting column 43 is separated from or movably connected with the abutting plate 1.

The staff places special-shaped part 100 on butt plate 1, makes spacing post 3 from the top down run through special-shaped part 100's through-hole 120 to with the cooperation of pegging graft of spacing hole 21 on the position sleeve, make conical surface 34 support tightly in special-shaped part 100's upside border department, thereby guarantee that special-shaped part 100's through-hole 120 and rotary fixture's axis of rotation are coaxial to be set up. The staff rotates the butt nut, and the rotation clamp plate 41 makes the butt face 412 of clamp plate 41 support tightly and is located the one side that base 110 deviates from butt joint board 1 with the mount pad 130 junction along base 110 thickness direction at mount pad 130, and the staff screws up again and unscrews lock nut 422, mounting nut 432 and lock nut 431, thereby the clamp plate 41 of special-shaped part 100 width direction both sides compresses tightly special-shaped part 100, makes special-shaped part 100 and butt joint board 1 relatively fixed. The worker then grasps the mounting block 36 and takes the stud 3 out of the through hole 120 of the profile part 100.

In the production operation, the staff starts vertical quenching lathe, and rotary fixture drives positioning fixture and rotates around vertical direction to drive special-shaped part 100 and rotate around through-hole 120 axis direction, the slip table drives induction coil and removes along vertical direction, accomplishes the quenching to the through-hole 120 inside wall.

Example 2:

referring to fig. 7, the present embodiment is different from embodiment 1 in that: the butt joint plate 1 is further provided with a positioning hole 12, the positioning hole 12 penetrates through the butt joint plate 1 along the thickness direction of the butt joint plate 1, and the positioning hole 12 is provided with a plurality of positioning holes on the butt joint plate 1. The lower end of the fixed column 42 penetrates through any positioning hole 12 along the thickness direction of the abutting plate 1, a limiting nut 423 is sleeved at the lower end of the fixed column 42, the limiting nut 423 is in threaded fit with the fixed column 42, and one side of the thickness direction of the limiting nut 423 abuts against one side of the abutting plate 1 deviating from the pressing plate 41 in the thickness direction. In actual use, the worker changes the positions of the fixing column 42 and the adjusting column 43 on the butt plate 1 according to the special-shaped parts 100 with different models, sizes and shapes, so that the positioning fixture is suitable for the special-shaped parts 100 with different sizes and shapes, and the adaptability of the positioning fixture is further improved.

Example 3:

referring to fig. 8, the present embodiment is different from embodiment 1 in that: the pressing device 4 comprises a horizontal quick clamp 44, the horizontal quick clamp 44 comprises a base 441, a wrench 442 and a chuck 443, and a rubber pad is arranged at the chuck 443. The base 441 of the horizontal quick clamp 44 is fixedly connected to the abutting plate 1, and the rubber pads are all abutted against one side of the mounting seat 130, which is located at the joint of the base 110 and the mounting seat 130 and deviates from the abutting plate 1 along the thickness direction of the base 110. One horizontal quick clamp 44 is provided on each of both sides in the width direction of the mount 130, and the chucks 443 of the two horizontal quick clamps 44 are located on the sides close to each other.

The pressing device 4 arranged in this way is helpful for enabling the worker to quickly assemble and disassemble the special-shaped part 100, is helpful for reducing the time for pressing and loosening the pressing device 4 by the worker, and improves the speed for replacing the special-shaped part 100 by the worker, thereby being helpful for improving the working efficiency and reducing the production cost.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a positioning fixture for through-hole inside wall thermal treatment which characterized in that: comprises a butt joint plate (1), a positioning column (2) is arranged on the butt joint plate (1), the positioning column (2) is coaxially arranged with the butt joint plate (1), the positioning column (2) penetrates through the butt joint plate (1) along the thickness direction of the butt joint plate (1) and is in splicing fit with the butt joint plate (1), the positioning column (2) is positioned at one side of the butt joint plate (1) along the thickness direction, a limiting column (3) is also arranged at one side of the butt joint plate (1) deviating from the positioning column (2) along the thickness direction, the limiting column (3) is coaxially arranged with the positioning column (2), the positioning column (2) is penetrated through from one side close to the positioning column (2) along the axis direction of the limiting column (3) and is in splicing fit with the positioning column (2), the limiting column (3) is positioned at the outer side wall of one side of the butt joint plate (1) deviating from the special-shaped positioning column (2) along the thickness direction and is abutted against the inner side wall of a through hole (120) of a part (100), the butt joint plate (1) is further provided with a pressing device (4) used for pressing the special-shaped part (100).

2. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 1, wherein: reference column (2) are including fixed cover (22) and stop collar (23), stop collar (23) and fixed cover (22) coaxial setting, stop collar (23) are located fixed cover (22) are close to one side of butt joint board (1) along its self axis direction, stop collar (23) and fixed cover (22) are along its self axis direction cooperation of pegging graft, stop collar (23) can be dismantled fixedly with fixed cover (22), the lower extreme and the stop collar (23) inside wall butt of spacing post (3) lateral wall.

3. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 1, wherein: spacing post (3) are including grafting section (31), butt section (33) and compress tightly section (35), grafting section (31) diameter is less than butt section (33) diameter, butt section (33) diameter is less than and compresses tightly section (35) diameter, butt section (33) lateral wall supports tightly with through-hole (120) inside wall of special-shaped part (100), grafting section (31) lateral wall supports tightly with stop collar (23) inside wall, compress tightly one side that section (35) are close to butt section (33) and support tightly on a side that base (110) thickness direction is close to mount pad (130).

4. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 3, wherein: the junction of butt joint section (33) and pressing section (35) still is provided with conical surface (34), conical surface (34) are along being close to one side shrink setting of pressing section (35) to the one side that is close to grafting section (31), conical surface (34) and through-hole (120) deviate from one side edge of butt joint board (1) and support tightly.

5. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 1, wherein: the pressing device (4) comprises a pressing plate (41), the thickness direction of the pressing plate (41) is parallel to that of the abutting plate (1), and a pressing assembly used for pressing the pressing plate (41) on one side face, away from the base (110), of the mounting seat (130) is arranged on the pressing plate (41).

6. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 5, wherein: the pressing assembly comprises a fixing column (42), one end of the fixing column (42) is fixedly connected with the abutting plate (1), the fixing column (42) extends along one side, close to the abutting section (33), of the abutting plate (1) in the thickness direction, the fixing column (42) penetrates through the pressing plate (41) in the thickness direction of the pressing plate (41), the fixing column (42) is movably connected with the pressing plate (41), a pressing nut (421) and a locking nut (422) are further sleeved on the fixing column (42), the pressing nut (421) and the locking nut (422) are in threaded fit with the fixing column (42), the pressing nut (421) is located between the pressing plate (41) and the abutting plate (1), and the locking nut (422) is located on one side, away from the abutting plate (1), of the pressing plate (41).

7. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 6, wherein: still be provided with on clamp plate (41) and adjust post (43), it can dismantle fixedly with clamp plate (41) to adjust post (43) one end, be provided with regulation hole (13) on butt plate (1), regulation hole (13) are followed butt plate (1) thickness direction and are run through butt plate (1), regulation hole (13) are provided with a plurality ofly on butt plate (1), adjust post (43) and run through arbitrary one regulation hole (13), and with butt plate (1) can dismantle fixedly.

8. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 7, wherein: be provided with waist type groove (411) on clamp plate (41), waist type groove (411) runs through clamp plate (41) thickness direction along clamp plate (41), waist type groove (411) length direction is parallel with clamp plate (41) length direction, adjust post (43) and run through waist type groove (411) along its self axis direction, it is equipped with lock nut (431) still to overlap on adjusting post (43), lock nut (431) are located one side that clamp plate (41) thickness direction deviates from butt plate (1), lock nut (431) support tightly on a side that deviates from butt plate (1) in clamp plate (41) thickness direction.

9. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 8, wherein: the butt joint plate is characterized in that a plurality of positioning holes (12) are formed in the butt joint plate (1), any positioning hole (12) penetrates through the butt joint plate (1) along the thickness direction of the butt joint plate (1), and the fixing column (42) penetrates through any positioning hole (12) along the thickness direction of the butt joint plate (1) and is detachably fixed with the butt joint plate (1).

10. The positioning jig for heat treatment of the inner side wall of the through hole as claimed in claim 1, wherein: the pressing device (4) comprises a horizontal quick clamp (44), a base (441) of the horizontal quick clamp (44) is fixedly connected with the abutting plate (1), the horizontal quick clamp (44) comprises a rubber pad arranged at the chuck (443), and the rubber pad abuts against one side surface, away from the base (110), of the mounting seat (130).

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