CN112757112A - Mould surface repairing machine tool - Google Patents

Abstract

The invention discloses a mould surface repairing machine tool, which comprises a positioning frame mechanism and a trimming head mechanism, wherein the positioning frame mechanism has six spatial degrees of freedom, and each movable joint is provided with a graduated scale, the trimming head mechanism is tightly mounted at the tail end of the positioning frame mechanism, the trimming head mechanism adopts two feeding modes of manual feeding and thermal stress feeding, the moving speed of the polishing head is high during manual feeding, the feeding precision of the polishing head is high during thermal stress feeding, the manual feeding can be adopted during idle stroke, the moving time of the polishing head is shortened, the hot stress feeding can be adopted when the surface of the die is trimmed, the surface processing quality of the die is improved, the transmission structure of the worm gear and the worm is adopted inside the trimming head mechanism, the transmission is stable, the self-locking function is realized, the reaction force of the surface of the die to the polishing head cannot enable the threaded shaft to move leftwards, and therefore the processing quality of the polishing head to the surface of the die cannot be influenced when the hot stress feeding is carried out.

Description

Mould surface repairing machine tool

Technical Field

The invention relates to the field of machining, in particular to a mould surface repairing machine tool.

Background

Molds play an extremely important role in modern industry, and the quality of a mold directly determines the quality of a product. The mold industry in China is rapidly developed in recent years and ascends three mold production countries in the world, but the mold industry in China has a larger difference compared with the production level of foreign advanced molds, and the difference is mainly expressed in the aspects of long manufacturing period, low manufacturing precision, short service life of the molds and the like, wherein the problem of short service life of the molds is particularly prominent, and the resource waste and the production cost are directly increased, so that the failed molds are repaired and reused, the service time of the molds is prolonged, unnecessary loss in production is recovered, the development of industry and national economy is greatly promoted, and the mold industry has remarkable economic benefit and social significance.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a mould surface repairing machine tool which is novel in structure and convenient to use.

The technical scheme adopted by the invention is as follows: mould surface repair lathe, including locating rack mechanism and repair first mechanism, its characterized in that: the positioning frame mechanism has six spatial degrees of freedom, each movable joint is provided with a graduated scale, and the trimming head mechanism adopts two feeding modes of manual feeding and thermal stress feeding and is fixedly arranged at the tail end of the positioning frame mechanism for repairing the surface of the die.

Preferably, the positioning frame mechanism comprises a base, a positioning sleeve, a sliding sleeve, an upright post, a second screw, a thimble sleeve, a fourth screw, a cross arm, a third screw, a first screw, a sixth screw, a swinging frame, a swinging rod, a fifth screw, a nut and a swinging head, wherein the base is fixedly arranged on the ground, the upright post is fixedly connected with the base, the sliding sleeve can move and rotate on the upright post through the pointer sleeve and is locked by the third screw, the positioning sleeve and the first screw are convenient for realizing the height positioning of the sliding sleeve, the cross arm and the sliding sleeve form a rotating pair and are locked by the second screw, the transverse swinging rod can form a rotating pair with the cross arm and is locked by the fourth screw, the swinging frame and the swinging rod form a rotating pair and is locked by the fifth screw, and the swinging head and the swinging frame form a rotating pair and is locked by the sixth screw.

Preferably, the trimming head mechanism is fixedly connected with the tail end of the positioning frame mechanism and comprises a shell, a worm gear, a rotating sleeve, a threaded shaft, a motor, a clamping piece, a polishing head, a moving shaft, a high-frequency electromagnetic induction coil, a thermal deformation piece, a second gear, a worm, a first gear and a hand wheel, wherein the shell is a supporting main body, the motor drives the polishing head to rotate through the clamping piece to realize the surface trimming of the die, the feeding and retreating of the polishing head can be realized through rotating the hand wheel and a transmission mechanism consisting of the worm gear, the rotating sleeve, the threaded shaft, the moving shaft, the second gear, the worm and the first gear during manual feeding, the moving speed of the polishing head is high during manual feeding, the feeding slide block can be pushed rightwards during thermal stress feeding, the thermal deformation piece is heated through the high-frequency electromagnetic induction coil, the micro-feeding of the polishing head is realized according to the principle of thermal expansion and cold contraction, and the manual feeding, the moving time of the polishing head is shortened, the thermal stress feeding can be adopted when the surface of the die is trimmed, and the surface processing quality of the die is improved.

Preferably, the base is fixedly installed on the ground through foundation bolts to provide stable support for the positioning frame mechanism, the lower end of the upright post is fixedly installed on the upper side of the base through screws and enables the upright post to be kept in a vertical state, the front side surface of the upright post is provided with first scales, the left side of the upright post is vertically provided with a guide groove, the needle sleeve is of an open cylindrical structure, the upper end of the needle sleeve is provided with a third pointer, the inner side of the needle sleeve is longitudinally provided with a guide strip, the needle sleeve and the upright post are coaxially installed, the guide strip is installed in the guide groove, so that the needle sleeve and the upright post form a moving pair, the upper end of the sliding sleeve is provided with third scales, the left side of the sliding sleeve is provided with a fan-shaped structure, the fan-shaped structure is provided with second scales and an arc-shaped hole, a longitudinal opening formed in the right side of the sliding sleeve can be installed on the outer side of the needle sleeve and form a rotating pair, thereby realize the rotation locking and the high location of slip commentaries on classics cover, the position sleeve is opening ring shape structure, and the position sleeve can slide on the stand with stand coaxial arrangement, is equipped with the recess on the plane of position sleeve upper end, is convenient for read first scale, screws up first screw and can realize the fixed of position sleeve on the stand.

The auxiliary connecting part of the sliding sleeve is heavy and is not convenient for direct accurate height positioning, so when the height of the sliding sleeve needs to be adjusted, the first screw is firstly unscrewed, the positioning sleeve is moved to enable the upper end plane of the positioning sleeve to move to a target scale, the first screw is locked to enable the positioning sleeve to be fastened on the upright post, then the two third screws are unscrewed, the sliding sleeve is moved downwards to enable the lower end surface of the sliding sleeve to be tightly attached to the upper end plane of the positioning sleeve, and then the two third screws are locked, so that the accurate height adjustment of the sliding sleeve is completed.

Preferably, the left end of the cross arm is of an open structure and is provided with a second pointer, the right end of the cross arm is provided with a cross arm disc and a fourth pointer, the left side of the cross arm and the sliding sleeve form a rotating pair, a second screw can penetrate through an arc-shaped hole in the left side of the sliding sleeve to enable the left end of the cross arm to clamp a sector structure in the left side of the sliding sleeve, so that the rotation locking of the cross arm is realized, the rotating angle of the cross arm relative to the sliding sleeve can be indicated on a second scale by the second pointer, three arc-shaped holes are uniformly distributed in the circumferential direction on the cross arm disc, the upper end of the yaw rod is provided with an upper scale, the upper scale is provided with a fourth scale and three threaded holes uniformly distributed in the circumferential direction, the upper scale can form a rotating pair with the cross arm disc and can be locked by three fourth screws, the rotating angle of the yaw rod relative to the cross arm can be indicated on, the left side of the swing frame is provided with a swing frame disc and a fifth pointer, the upper side of the swing frame disc is provided with a sixth pointer, three arc-shaped holes are uniformly distributed on the swing frame disc in the circumferential direction, the swing frame disc and the lower dial form a revolute pair and can be locked by three fifth screws, the rotation angle of the swing frame relative to the transverse swing rod can be indicated on a fifth scale by the fifth pointer, the upper end of the swing head is of a semi-circular plate structure, the semi-circular plate structure is provided with sixth scales and the arc-shaped holes, the semi-circular plate structure and the right side of the swing frame form a revolute pair, the sixth screw penetrates through the arc-shaped hole on the semi-circular plate structure and forms a thread pair with the swing frame, the rotation of the swing head relative to the swing frame can be locked by screwing the sixth screw, the rotation angle of the swing head relative to the swing frame can be indicated on the sixth scales by the sixth pointer, the lower end of the swing head is provided with a thread pair, for locking the expansion device.

Preferably, the right end of the shell is provided with four guide strips, the upper side of the shell is provided with a feeding scale and a feeding sliding block, the left end of the shell is provided with a threaded hole, the threaded hole and the threaded rod form a threaded pair and form a double-nut anti-loosening structure through nut locking, so that the trimming head mechanism and the tail end of the positioning frame mechanism are fastened and connected, the rotating sleeve is installed inside the shell and forms a rotating pair with the shell through four bearings, the worm wheel is coaxially installed at the left end of the rotating sleeve and is fastened and connected with the rotating sleeve through a round nut, the worm is vertically installed inside the shell and forms a rotating pair, the worm is meshed with the worm wheel to form a worm gear transmission structure, the second gear is coaxially fastened and installed at the upper end of the worm, the hand wheel is installed at the upper side of the shell and forms a.

Preferably, the right end of the rotating sleeve is provided with an internal thread structure, the outer side surface of the threaded shaft is provided with four guide grooves and an external thread structure, the four guide grooves are respectively matched and installed with the four guide bars at the right end of the shell, so that the threaded shaft and the shell form a moving pair, the external thread structure at the outer side surface of the threaded shaft and the internal thread structure at the right end of the rotating sleeve are matched and installed to form a threaded pair, and when the rotating sleeve rotates clockwise, the threaded shaft can move rightwards.

Preferably, the right end of the threaded shaft is provided with an internal spline, an external spline arranged at the left end of the movable shaft is matched and installed with the internal spline, so that the movable shaft and the threaded shaft form a moving pair, the thermal deformation piece is coaxially installed inside the threaded shaft, the left end of the thermal deformation piece is fixedly connected with the left end inside the threaded shaft through a nut, the right end of the thermal deformation piece is fixedly connected with the movable shaft through a thread, and the high-frequency electromagnetic induction coil is installed between the thermal deformation piece and the threaded shaft and used for heating the thermal deformation piece; the polishing head is tightly connected with the output shaft of the motor through a clamping piece, and the motor is fixedly arranged at the right end of the movable shaft.

The motor can drive the polishing head to rotate, so that the surface of the die can be trimmed.

The chucking piece can be with polishing head and motor output shaft fastening connection, can take off the polishing head and change other kinds of polishing head according to mould material and surface characteristic after unscrewing the chucking piece.

When the surface of the die is repaired, firstly, the height of a sliding sleeve in a positioning frame mechanism and the rotation amount of each joint need to be adjusted, so that a polishing head is aligned to the position of the surface of the die to be repaired, and then the polishing head is fed forwards, so that the repair of the surface of the die is gradually completed.

The idle stroke can adopt manual feeding: when the hand wheel is rotated clockwise, the first gear drives the second gear and the worm to rotate anticlockwise, the worm drives the worm wheel and the rotating sleeve to rotate clockwise, the rotating sleeve drives the threaded shaft to move rightwards through the thread pair, and manual feeding of the polishing head during idle stroke is realized; the backward movement of the polishing head can be realized by rotating the hand wheel anticlockwise.

Thermal stress feed may be used to trim the die surface: when the feeding sliding block slides rightwards, the high-frequency electromagnetic induction coil is electrified, the thermal deformation piece is heated according to the electromagnetic induction heating principle, the temperature of the thermal deformation piece is increased, the thermal deformation piece is extended according to the physical properties of thermal expansion and cold contraction, the polishing head is slightly fed, and the surface of the die is trimmed; the micro-feeding precision realized according to the heat effect can reach micron level, has extremely high precision, and can meet the requirement of trimming the surface of a high-precision die.

After the temperature and the elongation of the thermal deformation piece are calibrated, the scales indicated by the feeding slide block on the feeding scales can enable the high-frequency electromagnetic induction coil to heat the thermal deformation piece to the corresponding temperature, so that the control of the feeding slide block on the thermal stress feeding amount is realized.

The invention has the beneficial effects that:

firstly, the positioning frame mechanism has six spatial degrees of freedom and great flexibility, and the trimming head mechanism can trim the surface of any position and any angle on the die;

each movable joint of the positioning frame mechanism is provided with scale display, so that the head trimming mechanism can be accurately positioned in space;

each movable joint of the positioning frame mechanism is convenient to adjust, and electrified equipment is not adopted, so that the positioning frame mechanism is reliable in connection and positioning, low in failure rate, effective in reducing the manufacturing cost and beneficial to large-scale popularization and application;

the trimming head mechanism has two feeding modes of manual feeding and thermal stress feeding, the manual feeding is adopted during idle stroke, the moving time of the polishing head can be shortened, and the thermal stress feeding is adopted during trimming the surface of the die, so that the processing quality of the surface of the die can be improved;

the micro-feeding precision realized by the heat effect of the thermal deformation piece can reach micron level, and the micro-feeding device has extremely high precision and can meet the requirement of finishing the surface of a high-precision die;

the feeding amount of the thermal effect feeding can be indicated on the feeding scale by the feeding slide block, so that the method is visual and clear and is convenient to operate;

and the inside of the trimming head mechanism adopts a worm and gear transmission structure, so that the transmission is stable, the self-locking function is realized, the reaction force of the surface of the die on the polishing head cannot cause the threaded shaft to move leftwards, and the processing quality of the polishing head on the surface of the die during thermal stress feeding cannot be influenced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic overall structure diagram of the positioning frame mechanism.

Fig. 4 is an exploded view of the positioner mechanism.

Fig. 5 is a partial schematic view of the carriage mechanism.

Fig. 6 is a partial schematic view of the carriage mechanism.

Fig. 7 is a schematic view of the overall structure of the dressing head mechanism.

Fig. 8 is a schematic longitudinal sectional structure of the trimming head mechanism.

Fig. 9 is a schematic longitudinal sectional view of the trimming head mechanism.

Fig. 10 is a schematic diagram of a transverse cross-sectional structure of the trimming head mechanism.

Fig. 11 is an exploded view of the dressing head mechanism.

Fig. 12 is a schematic view of the structure of the threaded shaft.

Reference numerals: 1 positioning frame mechanism, 101 base, 102 positioning sleeve, 103 sliding sleeve, 103.1 second scale, 103.2 third scale, 104 upright post, 104.1 first scale, 104.2 guide groove, 105 second screw, 106 needle sleeve, 106.1 third pointer, 107 fourth screw, 108 cross arm, 108.1 cross arm disc, 108.2 fourth pointer, 108.3 second pointer, 109 third screw, 110 first screw, 111 sixth screw, 112 swinging frame, 112.1 sixth pointer, 112.2 swinging frame disc, 112.3 fifth pointer, 113 swinging rod, 113.1 upper scale, 113.2 lower scale, 114 fifth screw, 115 nut, 116 swinging head, 116.1 sixth scale, 116.2 threaded rod;

2 a trimming head mechanism, 201 a shell, 201.1 guide bars, 201.2 feed scales, 201.3 feed sliding blocks, 201.4 threaded holes, 202 worm wheels, 203 rotating sleeves, 204 threaded shafts, 204.1 internal splines, 204.2 guide grooves, 205 motors, 205.1 clamping pieces, 205.2 polishing heads, 206 moving shafts, 207 high-frequency electromagnetic induction coils, 208 thermal deformation pieces, 209 second gears, 210 worms, 211 first gears and 212 hand wheels.

Detailed Description

The invention will be further described with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 and 2, the machine tool for repairing the surface of the mold comprises a positioning frame mechanism 1 and a trimming head mechanism 2, and is characterized in that: the positioning frame mechanism 1 has six spatial degrees of freedom, each movable joint is provided with a graduated scale, and the trimming head mechanism 2 adopts two feeding modes of manual feeding and thermal stress feeding and is fixedly arranged at the tail end of the positioning frame mechanism 1 for repairing the surface of a mold.

As shown in fig. 3 to 6, the positioning frame mechanism 1 includes a base 101, a positioning sleeve 102, a sliding sleeve 103, a column 104, a second screw 105, a pointer sleeve 106, a fourth screw 107, a cross arm 108, a third screw 109, a first screw 110, a sixth screw 111, a swing frame 112, a yaw rod 113, a fifth screw 114, a nut 115, and a swing head 116, wherein the base 101 is fixedly mounted on the ground, the column 104 is fixedly connected with the base 101, the sliding sleeve 103 can move and rotate on the column 104 through the pointer sleeve 106 and is locked by the third screw 109, the positioning sleeve 102 and the first screw 110 facilitate height positioning of the sliding sleeve 103, the cross arm 108 and the sliding sleeve 103 form a rotation pair and is locked by the second screw 105, the yaw rod 113 and the cross arm 108 form a rotation pair and is locked by the fourth screw 107, the swing frame 112 and the yaw rod 113 form a rotation pair and is locked by the fifth screw 114, the swing head 116 may form a rotation pair with the swing frame 112 and be locked by the sixth screw 111.

As shown in fig. 7 to 12, the trimming head mechanism 2 is tightly connected to the end of the positioning frame mechanism 1, and includes a housing 201, a worm wheel 202, a rotating sleeve 203, a threaded shaft 204, a motor 205, a clamping member 205.1, a polishing head 205.2, a moving shaft 206, a high-frequency electromagnetic induction coil 207, a thermal deformation member 208, a second gear 209, a worm 210, a first gear 211, and a hand wheel 212, wherein the housing 201 is a supporting body, the motor 205 drives the polishing head 205.2 to rotate through the clamping member 205.1 to trim the surface of the mold, the manual feeding can be realized by rotating the hand wheel 212 and by a transmission mechanism formed by the worm wheel 202, the rotating sleeve 203, the threaded shaft 204, the moving shaft 206, the second gear 209, the worm 210, and the first gear 211, the polishing head 205.2 is moved faster during the manual feeding, the feeding slider 201.3 can be pushed to the right during the thermal stress feeding, the thermal deformation member 208 is heated by the high-frequency electromagnetic induction coil 207, according to the principle of expansion with heat and contraction with cold, the micro-feeding of the polishing head 205.2 is realized, manual feeding can be adopted during idle stroke, the moving time of the polishing head 205.2 is shortened, thermal stress feeding can be adopted during the surface finishing of the die, and the processing quality of the surface of the die is improved.

As shown in fig. 3 to 6, the base 101 is fixedly mounted on the ground through anchor bolts to provide stable support for the spacer mechanism 1, the lower end of the upright 104 is fixedly mounted on the upper side of the base 101 through screws to keep the upright 104 in a vertical state, the front side of the upright 104 is provided with a first scale 104.1, the left side of the upright 104 is vertically provided with a guide slot 104.2, the pointer sleeve 106 is an open cylindrical structure, the upper end of the pointer sleeve 106 is provided with a third pointer 106.1, the inner side of the pointer sleeve is longitudinally provided with a guide bar, the pointer sleeve 106 is coaxially mounted with the upright 104, the guide bar is mounted in the guide slot 104.2, so that the pointer sleeve 106 and the upright 104 form a moving pair, the upper end of the sliding sleeve 103 is provided with a third scale 103.2, the left side of the sliding sleeve is provided with a fan-shaped structure, the fan-shaped structure is provided with a second scale 103.1 and an arc-shaped hole, the longitudinal open circular hole formed on the right side of the sliding sleeve 103 can be mounted on the outer side of the pointer sleeve 106 and form, the two third screws 109 can enable the sliding sleeve 103 to clamp the thimble sleeve 106 and be fixed on the upright post 104, so that rotation locking and height positioning of the sliding sleeve 103 are realized, the positioning sleeve 102 is of an open circular ring structure, the positioning sleeve 102 and the upright post 104 are coaxially mounted and can slide on the upright post 104, a groove is formed in the plane of the upper end of the positioning sleeve 102, reading of the first scale 104.1 is facilitated, and the positioning sleeve 102 can be fixed on the upright post 104 by tightening the first screw 110.

When the height of the sliding sleeve 103 needs to be adjusted, the first screw 110 is firstly unscrewed, the positioning sleeve 102 is moved to move the upper end plane to the target scale, the first screw 110 is locked to fasten the positioning sleeve 102 on the upright post 104, then the two third screws 109 are unscrewed, the sliding sleeve 103 is moved downwards to enable the lower end plane to be tightly attached to the upper end plane of the positioning sleeve 102, and then the two third screws 109 are locked to finish the accurate height adjustment of the sliding sleeve 103.

The left end of the cross arm 108 is of an open structure and is provided with a second pointer 108.3, the right end of the cross arm 108 is provided with a cross arm disc 108.1 and a fourth pointer 108.2, the left side of the cross arm 108 and the sliding sleeve 103 form a rotation pair, the second screw 105 can penetrate through an arc hole on the left side of the sliding sleeve 103 to enable the left end of the cross arm 108 to clamp a sector structure on the left side of the sliding sleeve 103, so that the rotation locking of the cross arm 108 is realized, the rotation angle of the cross arm 108 relative to the sliding sleeve 103 can be indicated on a second scale 103.1 through the second pointer 108.3, three arc holes are uniformly distributed on the cross arm disc 108.1 in the circumferential direction, the upper end of the yaw rod 113 is provided with an upper scale 113.1, the upper scale 113.1 is provided with a fourth scale and three threaded holes uniformly distributed in the circumferential direction, the upper scale 113.1 can form a rotation pair with the cross arm disc 108.1 and can be locked through three fourth screws 107, the rotation angle of, the lower end of the horizontal swing rod 113 is provided with a lower dial 113.2, the lower dial 113.2 is provided with a fifth scale and three threaded holes which are uniformly distributed in the circumferential direction, the left side of the swing frame 112 is provided with a swing frame disc 112.2 and a fifth pointer 112.3, the upper side of the swing frame disc is provided with a sixth pointer 112.1, the upper side of the swing frame disc 112.2 is uniformly distributed with three arc-shaped holes in the circumferential direction, the swing frame disc 112.2 and the lower dial 113.2 can form a revolute pair and can be locked by three fifth screws 114, the rotating angle of the swing frame 112 relative to the horizontal swing rod 113 can be indicated on the fifth scale by the fifth pointer 112.3, the upper end of the swing head 116 is of a semicircular plate structure, the semicircular plate structure is provided with the sixth scale 116.1 and the arc-shaped holes, the semicircular plate structure and the right side of the swing frame 112 form a revolute pair, the sixth screw 111 passes through the arc-shaped holes on the semicircular plate structure and then forms a threaded pair with the swing frame 112, the sixth screw, the rotation angle of the swing head 116 relative to the swing frame 112 can be indicated on the sixth scale 116.1 by the sixth pointer 112.1, the lower end of the swing head 116 is provided with a threaded rod 116.2 for connecting the expansion device, and the nut 115 and the threaded rod 116.2 form a thread pair for locking the expansion device.

As shown in fig. 7 to 12, the right end of the housing 201 is provided with four guide bars 201.1, the upper side is provided with a feeding scale 201.2 and a feeding slider 201.3, the left end is provided with a threaded hole 201.4, the threaded hole 201.4 and the threaded rod 116.2 form a threaded pair and are locked by the nut 115 to form a double-nut anti-loosening structure, so as to realize the fastening connection of the trimming head mechanism 2 and the tail end of the positioning frame mechanism 1, the rotating sleeve 203 is installed inside the housing 201 and forms a rotating pair with the housing 201 through four bearings, the worm wheel 202 is coaxially installed at the left end of the rotating sleeve 203 and realizes the fastening connection of the two through a round nut, the worm 210 is vertically installed inside the housing 201 and forms a rotating pair, the worm 210 is engaged with the worm wheel 202 to form a worm-gear transmission structure, the second gear 209 is coaxially fastened at the upper end of the worm 210, the hand wheel 212 is installed at the upper side, the first gear 211 is in meshed transmission with the second gear 209.

The right end of the rotating sleeve 203 is provided with an internal thread structure, the outer side surface of the threaded shaft 204 is provided with four guide grooves 204.2 and an external thread structure, the four guide grooves 204.2 are respectively matched and installed with the four guide strips 201.1 at the right end of the shell 201, so that the threaded shaft 204 and the shell 201 form a moving pair, the external thread structure at the outer side surface of the threaded shaft 204 and the internal thread structure at the right end of the rotating sleeve 203 are matched and installed to form a thread pair, and when the rotating sleeve 203 rotates clockwise, the threaded shaft 204 can move rightwards.

The right end of the threaded shaft 204 is provided with an internal spline 204.1, an external spline arranged at the left end of the movable shaft 206 is matched and installed with the internal spline 204.1, so that the movable shaft 206 and the threaded shaft 204 form a moving pair, the thermal deformation piece 208 is coaxially installed inside the threaded shaft 204, the left end of the thermal deformation piece 208 is fixedly connected with the left end inside the threaded shaft 204 through a nut, the right end of the thermal deformation piece 208 is fixedly connected with the movable shaft 206 through threads, and the high-frequency electromagnetic induction coil 207 is installed between the thermal deformation piece 208 and the threaded shaft 204 and used for heating the thermal deformation piece 208; the sanding head 205.2 is tightly connected with the output shaft of the motor 205 through a clamping piece 205.1, and the motor 205 is fixedly arranged at the right end of the moving shaft 206.

The motor 205 can drive the sanding head 205.2 to rotate, thereby realizing the surface finishing of the mold.

The retainer 205.1 may securely connect the sanding head 205.2 to the output shaft of the motor 205. after loosening the retainer 205.1, the sanding head 205.2 may be removed and replaced with another type of sanding head depending on the mold material and surface characteristics.

When the surface of the mold is modified, firstly, the height of the sliding sleeve 103 in the positioning frame mechanism 1 and the rotation amount of each joint need to be adjusted, so that the polishing head 205.2 is aligned to the position of the surface of the mold to be modified, and then the polishing head 205.2 is fed forward, thereby gradually completing the repair of the surface of the mold.

The idle stroke can adopt manual feeding: when the handwheel 212 is rotated clockwise, the first gear 211 drives the second gear 209 and the worm 210 to rotate anticlockwise, the worm 210 drives the worm wheel 202 and the rotating sleeve 203 to rotate clockwise, the rotating sleeve 203 drives the threaded shaft 204 to move rightwards through the thread pair, and manual feeding of the polishing head 205.2 during idle stroke is realized; the retraction of the sanding head 205.2 may be accomplished by turning the handwheel 212 counterclockwise.

Thermal stress feed may be used to trim the die surface: when the feeding slide block 201.3 slides rightwards, the high-frequency electromagnetic induction coil 207 is electrified, the thermal deformation piece 208 is heated according to the electromagnetic induction heating principle, the temperature of the thermal deformation piece is increased, the thermal deformation piece 208 is extended according to the physical properties of thermal expansion and cold contraction, the polishing head 205.2 is slightly fed, and the surface of the die is trimmed; the micro-feeding precision realized according to the heat effect can reach micron level, has extremely high precision, and can meet the requirement of trimming the surface of a high-precision die.

After calibrating the temperature and the elongation of the thermal deformation member 208, the scales indicated by the feeding slide 201.3 on the feeding scale 201.2 can enable the high-frequency electromagnetic induction coil 207 to heat the thermal deformation member 208 to the corresponding temperature, so that the control of the feeding slide 201.3 on the thermal stress feeding amount is realized.

The references to "front", "back", "left", "right", etc., are to be construed as references to orientations or positional relationships based on the orientation or positional relationship shown in the drawings or as orientations and positional relationships conventionally found in use of the product of the present invention, and are intended to facilitate the description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Claims (5)

1. Mould surface repair lathe, including locating rack mechanism (1) and repair first mechanism (2), its characterized in that: the positioning frame mechanism (1) has six spatial degrees of freedom, each movable joint is provided with a graduated scale, and the trimming head mechanism (2) adopts two feeding modes of manual feeding and thermal stress feeding, is fixedly arranged at the tail end of the positioning frame mechanism (1) and is used for repairing the surface of a die;

the positioning frame mechanism (1) comprises a base (101), a positioning sleeve (102), a sliding sleeve (103), an upright post (104), a second screw (105), a pointer sleeve (106), a fourth screw (107), a cross arm (108), a third screw (109), a first screw (110), a sixth screw (111), a swinging frame (112), a swinging rod (113), a fifth screw (114), a nut (115) and a swinging head (116), wherein the base (101) is fixedly arranged on the ground, the upright post (104) is fixedly connected with the base (101), the sliding sleeve (103) can move and rotate on the upright post (104) through the pointer sleeve (106) and is locked by the third screw (109), the positioning sleeve (102) and the first screw (110) are convenient for realizing the height positioning of the sliding sleeve (103), the cross arm (108) and the sliding sleeve (103) form a rotating pair, and are locked by the second screw (105), the transverse swing rod (113) and the cross arm (108) can form a rotation pair and are locked by a fourth screw (107), the swing frame (112) and the transverse swing rod (113) can form a rotation pair and are locked by a fifth screw (114), and the swing head (116) and the swing frame (112) can form a rotation pair and are locked by a sixth screw (111);

the trimming head mechanism (2) is fixedly connected with the tail end of the positioning frame mechanism (1) and comprises a shell (201), a worm wheel (202), a rotating sleeve (203), a threaded shaft (204), a motor (205), a clamping piece (205.1), a polishing head (205.2), a moving shaft (206), a high-frequency electromagnetic induction coil (207), a thermal deformation piece (208), a second gear (209), a worm (210), a first gear (211) and a hand wheel (212), wherein the shell (201) is a supporting main body, the motor (205) drives the polishing head (205.2) to rotate through the clamping piece (205.1) to realize the trimming of the surface of a mold, and the feeding and retreating of the polishing head (205.2) can be realized through a transmission mechanism formed by rotating the hand wheel (212) and passing through the worm wheel (202), the rotating sleeve (203), the threaded shaft (204), the moving shaft (206), the second gear (209), the worm (210) and the first gear (211) during manual feeding, the moving speed of the polishing head (205.2) is high during manual feeding, the feeding sliding block (201.3) can be pushed rightwards during thermal stress feeding, the thermal deformation piece (208) is heated through the high-frequency electromagnetic induction coil (207), micro-feeding of the polishing head (205.2) is realized according to the principle of thermal expansion and cold contraction, manual feeding can be adopted during idle stroke, the moving time of the polishing head (205.2) is shortened, thermal stress feeding can be adopted during trimming of the surface of a die, and the processing quality of the surface of the die is improved.

2. The mold surface repair machine according to claim 1, wherein: the base (101) is fixedly arranged on the ground through foundation bolts and provides stable support for the positioning frame mechanism (1), the lower end of the upright post (104) is fixedly arranged on the upper side of the base (101) through screws and enables the upright post (104) to keep a vertical state, the front side surface of the upright post (104) is provided with a first scale (104.1), the left side of the upright post (104) is vertically provided with a guide groove (104.2), the pointer sleeve (106) is of an open cylindrical structure, the upper end of the pointer sleeve is provided with a third pointer (106.1), the inner side of the third pointer is longitudinally provided with a guide bar, the pointer sleeve (106) and the upright post (104) are coaxially arranged, the guide bar is arranged in the guide groove (104.2), so that the pointer sleeve (106) and the upright post (104) form a moving pair, the upper end of the sliding sleeve (103) is provided with a third scale (103.2), the left side of the sliding sleeve is provided with a fan-shaped structure, the fan-shaped structure is provided with a second scale (103.1) and an arc, the rotating angle of the sliding sleeve (103) relative to the pointer sleeve (106) can be indicated on a third scale (103.2) by a third pointer (106.1), the sliding sleeve (103) can be clamped by two third screws (109) and fixed on the pointer sleeve (106) on the upright post (104) so as to realize the rotation locking and height positioning of the sliding sleeve (103), the positioning sleeve (102) is of an open circular ring structure, the positioning sleeve (102) and the upright post (104) are coaxially mounted and can slide on the upright post (104), a groove is formed in the plane of the upper end of the positioning sleeve (102) so as to facilitate reading of the first scale (104.1), and the fixing of the positioning sleeve (102) on the upright post (104) can be realized by screwing the first screw (110);

because the weight of the accessory connecting part of the sliding and rotating sleeve (103) is large, and accurate height positioning is not convenient to directly carry out, when the height of the sliding and rotating sleeve (103) needs to be adjusted, the first screw (110) is firstly unscrewed, the positioning sleeve (102) is moved to enable the upper end plane of the positioning sleeve to move to a target scale, the first screw (110) is locked, the positioning sleeve (102) is fastened on the upright post (104), then the two third screws (109) are unscrewed, the sliding and rotating sleeve (103) is moved downwards to enable the lower end plane of the sliding and rotating sleeve (103) to be tightly attached to the upper end plane of the positioning sleeve (102), and the two third screws (109) are locked, so that the accurate height adjustment of the sliding and rotating sleeve (103).

3. The mold surface repair machine according to claim 1, wherein: the left end of the cross arm (108) is of an open structure and is provided with a second pointer (108.3), the right end of the cross arm is provided with a cross arm disc (108.1) and a fourth pointer (108.2), the left side of the cross arm (108) and the sliding sleeve (103) form a rotation pair, a second screw (105) can penetrate through an arc-shaped hole in the left side of the sliding sleeve (103) to enable the left end of the cross arm (108) to clamp a sector structure in the left side of the sliding sleeve (103), so that the rotation locking of the cross arm (108) is realized, the rotation angle of the cross arm (108) relative to the sliding sleeve (103) can be indicated on a second scale (103.1) through the second pointer (108.3), three arc-shaped holes are uniformly distributed in the circumferential direction on the cross arm disc (108.1), an upper dial (113.1) is arranged at the upper end of the cross arm (113), a fourth scale and three threaded holes are uniformly distributed in the circumferential direction are arranged on the upper dial (113.1), the upper dial (113.1) can form a rotation pair with the, the rotating angle of the transverse swing rod (113) relative to the cross arm (108) can be indicated on a fourth scale by a fourth pointer (108.2), the lower end of the transverse swing rod (113) is provided with a lower dial (113.2), the lower dial (113.2) is provided with a fifth scale and three threaded holes which are uniformly distributed in the circumferential direction, the left side of the swing frame (112) is provided with a swing frame disc (112.2) and a fifth pointer (112.3), the upper side of the swing frame disc is provided with a sixth pointer (112.1), the upper side of the swing frame disc (112.2) is uniformly distributed with three arc-shaped holes in the circumferential direction, the swing frame disc (112.2) and the lower dial (113.2) can form a rotating pair and can be locked by three fifth screws (114), the rotating angle of the swing frame (112) relative to the transverse swing rod (113) can be indicated on the fifth scale by the fifth pointer (112.3), the upper end of the swing head (116) is in a semi-circular plate structure, the semi-circular plate structure and the rotating pair are arranged on the semi-circular plate structure and the swing frame (112), the sixth screw (111) penetrates through an arc-shaped hole in the semicircular plate structure and then forms a thread pair with the swing frame (112), the rotation of the swing head (116) relative to the swing frame (112) can be locked by screwing the sixth screw (111), the rotation angle of the swing head (116) relative to the swing frame (112) can be indicated on a sixth scale (116.1) by a sixth pointer (112.1), a threaded rod (116.2) is arranged at the lower end of the swing head (116) and used for connecting expansion equipment, and a nut (115) and the threaded rod (116.2) form a thread pair for locking the expansion equipment.

4. The mold surface repair machine according to claim 1, wherein: the right end of the shell (201) is provided with four guide strips (201.1), the upper side of the shell is provided with a feeding scale (201.2) and a feeding sliding block (201.3), the left end of the shell is provided with a threaded hole (201.4), the threaded hole (201.4) and a threaded rod (116.2) form a threaded pair and are locked by a nut (115) to form a double-nut anti-loose structure, so that the fixed connection between the trimming head mechanism (2) and the tail end of the positioning frame mechanism (1) is realized, a rotating sleeve (203) is arranged in the shell (201) and forms a rotating pair with the shell (201) through four bearings, a worm wheel (202) is coaxially arranged at the left end of the rotating sleeve (203), the fixed connection between the worm wheel and the rotating sleeve is realized through a round nut, a worm (210) is vertically arranged in the shell (201) and forms a rotating pair, the worm (210) is meshed with the worm wheel (202) to form a worm wheel, the hand wheel (212) is arranged on the upper side of the shell (201) and forms a rotation pair, the first gear (211) is coaxially and fixedly connected with the lower end of the hand wheel (210), and the first gear (211) is in meshing transmission with the second gear (209);

an internal thread structure is arranged at the right end of the rotating sleeve (203), four guide grooves (204.2) and an external thread structure are arranged on the outer side surface of the threaded shaft (204), the four guide grooves (204.2) are respectively matched and installed with four guide strips (201.1) at the right end of the shell (201), so that the threaded shaft (204) and the shell (201) form a moving pair, the external thread structure on the outer side surface of the threaded shaft (204) is matched and installed with the internal thread structure at the right end of the rotating sleeve (203) to form a thread pair, and when the rotating sleeve (203) rotates clockwise, the threaded shaft (204) can move rightwards;

the right end of the threaded shaft (204) is provided with an internal spline (204.1), an external spline arranged at the left end of the movable shaft (206) is matched and installed with the internal spline (204.1), so that the movable shaft (206) and the threaded shaft (204) form a moving pair, the thermal deformation piece (208) is coaxially installed inside the threaded shaft (204), the left end of the thermal deformation piece and the left end inside the threaded shaft (204) are fixedly connected through a nut, the right end of the thermal deformation piece (208) and the movable shaft (206) are fixedly connected through threads, and the high-frequency electromagnetic induction coil (207) is installed between the thermal deformation piece (208) and the threaded shaft (204) and used for heating the thermal deformation piece (208); the sanding head (205.2) is tightly connected with an output shaft of the motor (205) through a clamping piece (205.1), and the motor (205) is fixedly arranged at the right end of the movable shaft (206).

5. The mold surface repair machine according to claim 1, wherein: the motor (205) can drive the grinding head (205.2) to rotate, so that the surface of the die can be trimmed;

the clamping piece (205.1) can tightly connect the polishing head (205.2) with the output shaft of the motor (205), and the polishing head (205.2) can be taken down and replaced by other types of polishing heads according to the material and surface characteristics of the die after the clamping piece (205.1) is unscrewed;

when the surface of a die is repaired, firstly, the height of a sliding sleeve (103) in a positioning frame mechanism (1) and the rotation amount of each joint need to be adjusted, so that a polishing head (205.2) is aligned to the position of the surface of the die needing to be repaired, and then the polishing head (205.2) is fed forwards, thereby gradually completing the repair of the surface of the die;

the idle stroke can adopt manual feeding: when a hand wheel (212) is rotated clockwise, a first gear (211) drives a second gear (209) and a worm (210) to rotate anticlockwise, the worm (210) drives a worm wheel (202) and a rotating sleeve (203) to rotate clockwise, the rotating sleeve (203) drives a threaded shaft (204) to move rightwards through a thread pair, and manual feeding of a polishing head (205.2) during idle stroke is realized; the backward movement of the polishing head (205.2) can be realized by rotating the hand wheel (212) anticlockwise;

thermal stress feed may be used to trim the die surface: the feeding sliding block (201.3) slides rightwards, the high-frequency electromagnetic induction coil (207) is electrified, the thermal deformation piece (208) is heated according to the electromagnetic induction heating principle, the temperature of the thermal deformation piece is increased, and the thermal deformation piece (208) is extended according to the physical properties of thermal expansion and cold contraction, so that the polishing head (205.2) is slightly fed, and the surface of the die is trimmed; the micro-feeding precision realized according to the heat effect can reach micron level, has extremely high precision, and can meet the requirement of trimming the surface of a high-precision die;

after the temperature and the elongation of the thermal deformation piece (208) are calibrated, the scales indicated by the feeding slide block (201.3) on the feeding scales (201.2) can enable the high-frequency electromagnetic induction coil (207) to heat the thermal deformation piece (208) to the corresponding temperature, and therefore the control of the feeding slide block (201.3) on the thermal stress feeding amount is achieved.

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