CN108546945B

CN108546945B - Machining device for hard alloy cutter

Info

Publication number: CN108546945B
Application number: CN201810339599.XA
Authority: CN
Inventors: 孙兵涛; 陈贤聪
Original assignee: Institute of Laser and Optoelectronics Intelligent Manufacturing of Wenzhou University
Current assignee: Zhuzhou SRP Cemented Carbide Co.,Ltd.
Priority date: 2018-04-16
Filing date: 2018-04-16
Publication date: 2020-06-09
Anticipated expiration: 2038-04-16
Also published as: CN108546945A

Abstract

The invention belongs to the technical field of cutter processing, and particularly discloses a processing device for a hard alloy cutter, which comprises a rack, a passivation box, a gear box, a base and a cutter box, wherein the gear box is fixed at the upper end of the rack, and the base is fixed at the lower end of the rack; a sliding column capable of moving up and down is arranged on the base, a supporting seat is fixed at the upper end of the sliding column, the gear box is aligned with the supporting seat, and a concave cavity which is in rotating fit with the outer part of the passivation box is arranged on the supporting seat; a column cavity is arranged at the center of the concave cavity, a sliding block is arranged in the column cavity in a vertically sliding manner, a supporting rod is arranged on the sliding block, a positive thread groove and a negative thread groove are arranged on the supporting rod, and the two thread grooves are connected end to end; the center of the lower end of the passivation box is provided with a sliding cavity, the bottom of the sliding cavity is provided with a sliding hole, and the inner wall of the sliding hole is provided with a bulge. Compared with the prior art, the device can passivate the cutter with different strengths as required, thereby achieving the passivation effect required by the cutter, and meanwhile, the device can passivate the cutter in batches rapidly, thereby greatly improving the passivation efficiency of the cutter.

Description

Machining device for hard alloy cutter

Technical Field

The invention belongs to the technical field of cutter processing, and particularly discloses a processing device for a hard alloy cutter.

Background

The hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, and is widely used as a cutter material. When the hard alloy tool is produced and processed, the cutting edge needs to be carefully ground, so that the processing roughness of the hard alloy tool reaches 0.4-0.8 micron; however, the cutting edge of the cemented carbide tool is inspected by a hundredfold microscope, and still tiny saw teeth can be seen, and the saw teeth can obviously affect the cutting performance of the cemented carbide tool along with the use of the cemented carbide tool, such as the extension, the aggravation of abrasion, the edge breaking phenomenon and the like of the tool saw teeth, so that the cemented carbide tool is generally passivated after the machining of the cemented carbide tool is finished.

The passivation treatment is to extend the cutting edge of the cutter into the passivating agent to rotate, and passivate the cutting edge of the cutter under the action of the passivating agent, so that the initial abrasion stage of the cutter can be shortened or even eliminated, the shock resistance of the cutter is improved, the probability of edge breakage and damage of the cutter is reduced, and the service life of the cutter is prolonged. At present, a passivation machine is mainly used for passivating a hard alloy tool, and the passivation machine clamps the tool and then extends into a passivating agent to rotate to complete passivation. The existing passivation machine can only passivate one or a small number of hard alloy tool cutters, has low working efficiency and is difficult to meet the requirement of passivating the cutting edges of large-scale hard alloy tools.

Meanwhile, the existing passivation machine generally revolves or rotates the hard alloy tool in the passivation agent, and when the tool is in a horizontal position, the passivation effect is not good only by the rotation or revolution of the tool. In addition, before the passivation machine is used, a cutter needs to be installed and clamped on the passivation machine, the clamping process of the hard alloy tool cutter is usually completed manually, and the cutting edge part is required to be outwards clamped by the hard alloy tool cutter, so that operators are very easy to hurt.

Disclosure of Invention

The invention aims to provide a machining device for a hard alloy cutter, which aims to solve the problems of poor passivation effect and low efficiency when a passivation machine passivates the hard alloy cutter.

In order to achieve the purpose, the basic scheme of the invention is as follows: the machining device for the hard alloy cutter comprises a rack, a passivation box, a gear box and a base, wherein the gear box is fixed at the upper end of the rack, and the base is fixed at the lower end of the rack; the passivation box comprises a base, a passivation box and a tool box, wherein the base is provided with a sliding column capable of moving up and down, a supporting seat is fixed at the upper end of the sliding column, the gear box is aligned with the supporting seat, and the supporting seat is provided with a concave cavity which is in rotating fit with the outer part of the passivation box; a column cavity is arranged at the center of the concave cavity, a sliding block is arranged in the column cavity in a vertically sliding manner, a supporting rod is arranged on the sliding block, a positive thread groove and a negative thread groove are formed in the supporting rod, and the two thread grooves are connected end to end; a sliding cavity for the support rod to extend into is arranged in the center of the lower end of the passivation box, a sliding hole matched with the support rod is arranged at the bottom of the sliding cavity, and a protrusion connected with the thread groove in a sliding mode is arranged on the inner wall of the sliding hole;

a central rod is rotatably arranged on the gear box, a driving gear is fixed on the central rod, a plurality of transmission gears are uniformly arranged on the periphery of the driving gear on the gear box, and a transmission rod rotatably connected with the gear box is arranged in the center of each transmission gear; a main gear is fixed on each of the transmission rod and the central rod, a plurality of driven gears are meshed around the main gear, a rotating rod rotatably connected with the gear box is arranged in the center of each driven gear, and a cutter chuck for clamping a cutter is arranged at the lower end of each rotating rod; the driving gear, the transmission gear, the driving gear and the driven gear are all positioned in the gear box, and the upper end of the gear box is provided with a motor for driving the central rod to rotate;

an inner gear ring is rotatably arranged on the gear box, the inner part of the inner gear ring is meshed with the transmission gear, and the outer part of the inner gear ring can be connected with the passivation box in a vertically sliding manner without rotating in the circumferential direction; the cutter box can be placed in the concave cavity, and a cutter groove which corresponds to the position of the cutter chuck and is used for placing a cutter is arranged in the cutter box;

the cutter chuck comprises a fixed plate fixedly connected with the lower end of the rotating rod, a sleeve is fixed on the fixed plate, a sleeve cap is connected to the outside of the sleeve in a sliding manner, and a spring for supporting the sleeve cap is arranged in the sleeve; the sleeve is equipped with a plurality of centre gripping units all around evenly, the centre gripping unit includes connecting rod, clamping bar, splint and pull rod, it is articulated to lie in sleeve department all around on connecting rod upper end and the fixed plate, splint upper end is articulated with the connecting rod lower extreme, the clamping bar upper end is articulated with the cap lower extreme, the clamping bar middle part is articulated with splint, is equipped with on the splint to be used for clamping bar lower extreme pivoted bar groove, and the clamping bar lower extreme is fixed to be equipped with towards the clamping jaw that the sleeve central line is used for the centre gripping tool bit, and pull rod one end is articulated with the connecting rod middle part, and the pull rod other.

The working principle of the basic scheme is as follows: when the device is used, the mounting part of the cutter is held by hand, the cutter is placed in the cutter groove, after all the cutter grooves are filled with the cutter, the cutter box is placed in the concave cavity, and the supporting seat is moved upwards by the up-and-down sliding of the sliding column; because the cutter box and the support seat are aligned, the cutter box will move upwards to be close to the gear box; since the position of the tool slot corresponds to the position of the tool holder, the upper end of the tool will be close to the tool holder after the tool box is close to the gear box.

When the upper end of the cutter is close to the cutter chuck, the sleeve cap is pressed at first, the sleeve cap moves upwards to drive the upper end of the clamping rod to move upwards, so that the clamping rod rotates along the hinged position of the middle part of the clamping rod and the clamping plate, and the lower part of the clamping rod is close to the center of the cutter when the clamping rod rotates, so that the clamping jaw clamps the cutter. At the moment, the sliding column moves downwards to enable the supporting seat to descend, the cutter box is driven to move downwards, and the cutters are clamped by the cutter clamping heads and cannot move downwards along with the cutters. When the clamping plate moves downwards, the upper end of the connecting rod is connected to the fixed plate and is positioned at the periphery of the sleeve, and under the limiting action of the connecting rod, the clamping plate moves downwards to be close to the central line of the sleeve, so that the cutter is clamped more firmly.

At the moment, the cutter box is moved out of the cavity, the passivating agent is poured into the passivation box, the passivation box is placed in the cavity, the supporting seat is moved upwards through the sliding column, the passivation box is moved upwards to be close to the gear box, and the cutter clamped at the lower end of the gear box extends into the passivation box and contacts with the passivating agent. The motor is electrified to drive the central rod to rotate, the central rod rotates to drive the driving gear to rotate, the driving gear is meshed with the transmission gear, the transmission rod and the driving gear rotate along with the driving gear, and the driving gear is meshed with the driven gear, so that the driven gear and the rotating rod rotate along with the driving gear. The cutter chuck is arranged at the lower end of the transmission rod, and the transmission rod rotates to drive the cutter chuck to rotate, so that the cutter rotates in the passivating agent to be passivated.

In the passivation process of the cutter, if the passivation effect needs to be enhanced, the passivation box can be moved upwards again through the sliding column until the passivation box is connected with the outer portion of the inner gear ring in a vertical sliding mode and does not rotate in the circumferential direction, the inner gear ring is meshed with the transmission gear, the transmission gear drives the inner gear ring to rotate, the inner gear ring and the passivation box do not rotate in the circumferential direction, the passivation box is matched with the concave cavity in a rotating mode, the passivation box rotates under the action of the inner gear ring, the cutter can revolve in the passivation box due to the rotation of the passivation box, and therefore the cutter can be passivated under the action of the rotation and the revolution simultaneously, and.

During the passivation process of the cutter, if the passivation effect needs to be enhanced, the slide block can slide upwards to enable the support rod to extend out of the column cavity, the slide hole is matched with the support rod, and the protrusion extends into the thread groove; treat that the arch will get into another thread groove and slide when removing this thread groove tip, because two opposite thread grooves set up, can make passivation case antiport, the arch slides the process in two thread grooves, will make the passivation case continuously reciprocate, makes the cutter still can reciprocate in the passivation built-in rotation of passivation and revolution and passivate to the blade of cutter has carried out the omnidirectional passivation, and the passivation effect is better. Because the passivation box is connected with the outer part of the inner gear ring in a vertical sliding manner, the inner gear ring can continuously drive the passivation box to rotate, and the up-and-down movement of the passivation box is not influenced.

After the cutter is passivated, the supporting seat can be moved downwards through the sliding column, the passivation box is taken out of the cavity of the supporting seat, the cutter box is placed into the cavity of the supporting seat, and then the supporting seat is moved upwards through the sliding column, so that the cutter box is close to the gear box. The tool pocket corresponds to the position of the tool holder and the tool will again extend into the tool pocket. And along with the disappearance of the gravity action of the upward moving cutter of the cutter groove, the clamping plate can be pushed up by the cutter groove to be away from the cutter, so that the clamping of the cutter is released, the cutter quickly falls into the cutter groove, and the passivation of the cutter and the taking out of the cutter are completed.

The beneficial effect of this basic scheme lies in:

1. a plurality of main gears are arranged in the device, a plurality of slave gears are arranged around each main gear, and cutter chucks are correspondingly arranged on the slave gears, so that the device can clamp a large number of cutters, passivates the cutters in batches, and greatly improves the passivation efficiency of the cutters.

2. The device can make the cutter revolve by utilizing the rotation action of the cutter while the cutter rotates according to the passivation requirement, thereby increasing the passivation effect; in addition, the cutter can be passivated by reciprocating up and down under the action of revolution, so that the cutter can be passivated in all directions, and the condition that the passivation effect is poor when the cutting edge of the cutter is in a horizontal position is avoided. The passivation effect of the device on the cutter can be adjusted according to the requirement, and the passivation effect is excellent.

3. When the device is used, the tools can be clamped only by placing the tools in the tool grooves in the tool box and moving the tool box upwards, and the tools do not need to be manually clamped on the tool chuck one by one, so that the use efficiency is greatly improved, and the tool passivation efficiency is further improved; on the other hand, in the process that the cutter is clamped to the cutter chuck, an operator cannot contact the cutting edge of the cutter, and the operator is strictly prevented from being injured by the cutting edge of the cutter.

4. The arrangement of the tool chuck in the device can clamp the tool when the tool moves upwards, and the tool is firmly clamped by using the gravity action of the tool, so that the operation of the tool clamping process is very simple and convenient; when the cutter takes off, it can take off the cutter to move up the cutter, and this process is also very convenient to make the use operation of this device very simple.

Compared with the prior art, the device can passivate the cutter with different strengths as required, thereby achieving the passivation effect required by the cutter, and meanwhile, the device can passivate the cutter in batches rapidly, thereby greatly improving the passivation efficiency of the cutter.

Further, still include the transfer frame, the transfer frame middle part rotates with the frame to be set up, the appearance of cutter case and passivation case is the round platform shape of invering, be equipped with two ring holes that can the centre gripping respectively place transfer frame and passivation case on the transfer frame, two ring holes set up along the frame symmetry.

Place passivation case and cutter case respectively at the ring that shifts the frame downthehole, when needing to change passivation case and cutter case, rotate and shift the frame and can realize changing, very labour saving and time saving. The appearance of cutter case and passivation case is the round platform shape of invering, shifts the frame and carries out the centre gripping through ring hole pair cutter case and passivation case, when cutter case or passivation case moved the supporting seat on, reciprocate at the supporting seat in, passivation case or cutter case also can reciprocate thereupon, and the use of this device can not be influenced to the centre gripping mode in ring hole.

Furthermore, the transfer frame is provided with a slave conical fluted disc at the rotary connection part with the frame, the frame is provided with a cross rod, the cross rod is provided with a main conical fluted disc meshed with the slave conical fluted disc in a rotary mode, and the main conical fluted disc is provided with a handle for rotating the main conical fluted disc.

The rotating rack can rotate by rotating the main conical fluted disc and the auxiliary conical fluted disc through the handle, so that the rotating rack is simple in rotating operation, time-saving and labor-saving.

Furthermore, a plurality of key bars are arranged outside the inner gear ring, and key grooves in sliding fit with the key bars are arranged inside the passivation box. The outer portion of the inner gear ring is connected with the passivation box in a non-rotating mode in the circumferential direction and is connected with the passivation box in a sliding mode up and down, and the structure is simple and convenient to manufacture.

Further, the inner wall of the cutter groove is provided with a spongy cushion for protecting the cutter. The cutting edge of the cutter is protected, and the cutter is prevented from being damaged in the cutter groove.

Furthermore, four clamping units are uniformly distributed around the rotary drum, the inner side of each clamping plate is arc-shaped, and a rubber pad is arranged on the inner side of each clamping plate. The four clamping units can firmly clamp the cutter, and design and manufacture are facilitated.

The sliding column is a hydraulic sliding column, the bottom of the sliding block is provided with a magnetic block, and the bottom of the column cavity is provided with an electromagnet which is electrified and repulsed by the magnetic block. The sliding column is hydraulically controlled to move up and down, so that the sliding column can move up and down conveniently and stably. The magnetic force after the electromagnet is electrified can enable the sliding block to move upwards, the magnetic force after the electromagnet is powered off disappears, the sliding block moves downwards under the action of gravity, and the magnetic block and the electromagnet are arranged to control the position of the sliding block conveniently.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the machining device for the hard alloy cutter of the invention;

figure 2 is a longitudinal cross-sectional view of the tool holder.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the tool comprises a machine frame 10, a base 11, a sliding column 12, a supporting seat 20, a concave cavity 21, a column cavity 22, a sliding block 23, a magnetic block 24, a supporting rod 25, a threaded groove 26, an electromagnet 27, a passivation box 30, a sliding cavity 31, a sliding hole 32, a key groove 33, a gear box 40, a motor 41, a central rod 42, a driving gear 43, a transmission rod 44, a transmission gear 45, a main gear 46, a rotating rod 47, a slave gear 48, an inner gear ring 49, a key strip 491, a tool chuck 50, a fixing plate 51, a sleeve 52, a spring 53, a sleeve cap 54, a connecting rod 55, a pull rod 551, a clamping plate 56, a strip-shaped groove 57, a clamping rod 58, a clamping jaw 59, a tool box 60, a tool groove 61, a main bevel gear disc 70, a cross rod 71, a.

As shown in fig. 1 and 2, the machining device for the hard alloy tool comprises a frame 10, a passivation box 30, a gear box 40, a base 11, a transfer frame and a tool box 60, wherein the gear box 40 is fixed at the upper end of the frame 10, the base 11 is fixed at the lower end of the frame 10, a sliding column 12 capable of moving up and down is arranged on the base 11, in the embodiment, the sliding column 12 is controlled to move up and down by adopting hydraulic pressure, a support seat 20 is fixed at the upper end of the sliding column 12, and the gear box 40 is aligned with the support seat 20.

The supporting seat 20 is provided with a concave cavity 21 which is rotationally matched with the outer part of the passivation box 30; a column cavity 22 is formed in the supporting seat 20 and located at the center of the concave cavity 21, a sliding block 23 is arranged in the column cavity 22 in a vertically sliding mode, a magnetic block 24 is arranged at the bottom of the sliding block 23, an electromagnet 27 which is electrified and repulsed with the magnetic block 24 is arranged at the bottom of the column cavity 22, and a switch for controlling the electromagnet 27 to be electrified and deenergized is fixed on the side face of the supporting seat 20. A support rod 25 is fixed on the sliding block 23, a positive thread groove and a negative thread groove 26 are arranged on the support rod 25, and the two thread grooves 26 are connected end to end; the center of the lower end of the passivation box 30 is provided with a sliding cavity 31 for the support rod 25 to extend into, the bottom of the sliding cavity 31 is provided with a sliding hole 32 matched with the support rod 25, and the inner wall of the sliding hole 32 is provided with a bulge connected with the thread groove 26 in a sliding manner.

A central rod 42 is rotatably arranged on the gear box 40, a driving gear 43 is fixed on the central rod 42, a plurality of transmission gears 45 are uniformly arranged on the periphery of the driving gear 43 on the gear box 40, and a transmission rod 44 rotatably connected with the gear box 40 is arranged in the center of each transmission gear 45; a main gear 46 is fixed on each of the transmission rod 44 and the central rod 42, a plurality of slave gears 48 are meshed around the main gear 46, a rotating rod 47 rotatably connected with the gear box 40 is arranged at the center of each slave gear 48, and a cutter chuck 50 for clamping a cutter is arranged at the lower end of each rotating rod 47; the driving gear 43, the transmission gear 45, the main gear 46 and the driven gear 48 are all positioned in the gear box 40, and the upper end of the gear box 40 is provided with a motor 41 for driving the central rod 42 to rotate.

An inner gear ring 49 is rotatably arranged on the gear box 40, the inner gear ring 49 is internally meshed with the transmission gear 45, a key strip 491 is arranged outside the inner gear ring 49, and a key groove 33 which is in sliding fit with the key strip 491 is arranged inside the passivation box 30, so that the inner part of the passivation box 30 is connected with the outer part of the inner gear ring 49 in a vertically sliding mode and is not connected with the inner gear ring 49 in a circumferential direction in a rotating mode.

The cutter box 60 can be placed in the concave cavity 21, and a cutter groove 61 for placing a cutter is arranged in the cutter box 60 and corresponds to the position of the cutter chuck 50; the middle part of the transfer frame is rotationally arranged with the frame 10, the outer appearances of the cutter box 60 and the passivation box 30 are both inverted round table shapes, two circular ring holes 81 capable of respectively clamping and placing the transfer frame and the passivation box 30 are arranged on the transfer frame, and the two circular ring holes 81 are symmetrically arranged along the frame 10. A secondary bevel gear plate 72 is arranged at the rotary connection part of the transfer frame and the frame 10, the secondary bevel gear plate 72 is connected to the frame 10 in a rotary manner, a cross rod 71 is arranged on the frame 10, a main bevel gear plate 70 meshed with the secondary bevel gear plate 72 is arranged on the cross rod 71 in a rotary manner, and a handle 73 used for rotating the main bevel gear plate 70 is arranged on the main bevel gear plate 70.

The tool chuck 50 comprises a fixed plate 51 fixedly connected with the lower end of the rotating rod 47, a sleeve 52 is fixed on the fixed plate 51, a sleeve cap 54 is connected outside the sleeve 52 in a sliding manner, and a spring 53 for supporting the sleeve cap 54 is arranged in the sleeve 52; a plurality of clamping units, preferably four clamping units in this embodiment, are uniformly distributed around the sleeve 52. The clamping unit comprises a connecting rod 55, a clamping rod 58, a clamping plate 56 and a pull rod 551, the upper end of the connecting rod 55 is hinged to the periphery of the sleeve 52 on the fixing plate 51, the upper end of the clamping plate 56 is hinged to the lower end of the connecting rod 55, the upper end of the clamping rod 58 is hinged to the lower end of the sleeve cap 54, the middle of the clamping rod 58 is hinged to the clamping plate 56, a strip-shaped groove 57 used for rotating the lower end of the clamping rod 58 is formed in the clamping plate 56, a clamping jaw 59 facing the central line of the sleeve 52 and used for clamping a tool bit is fixedly arranged at the lower end of the clamping rod 58, one end of the.

When the device is used, the mounting part of the cutter is held by hands, the cutter is placed in the cutter grooves 61, after all the cutter grooves 61 are filled with the cutter, the handle 73 is held by hands to rotate the main bevel gear disc 70, the auxiliary bevel gear disc 72 meshed with the main bevel gear disc rotates to drive the rotating frame 80 to rotate, and the cutter box 60 is rotated above the supporting seat 20. The support seat 20 is moved upwards by the up-and-down sliding of the sliding column 12, and the lower end of the tool box 60 is clamped in the cavity 21; with the cutter box 60 and the support base 20 aligned, the cutter box 60 will move up closer to the gear box 40; the position of the tool slot 61 corresponds to the position of the tool holder 50, and the upper end of the tool will be adjacent to the tool holder 50 after the tool box 60 is adjacent to the gear box 40.

When the upper end of the tool is adjacent to the tool holder 50, the cap 54 will be pressed first, the cap 54 will move up to move the upper end of the clamping bar 58 up, so that the clamping bar 58 will rotate along the middle of the clamping bar 58 at the point where it is hinged to the clamping plate 56, and the lower end of the clamping bar 58 will move closer to the center of the tool when the clamping bar 58 rotates, so that the clamping jaws 59 will clamp the tool. At this time, the slide post 12 moves downward to lower the support base 20, which drives the tool box 60 to move downward, and the tools are all clamped by the tool chuck 50 and cannot move downward therewith. After the cutter box 60 moves downwards until the cutter is completely separated from the cutter groove 61, the sleeve cap 54 moves downwards under the action of the spring 53, the pull rod 551 moves downwards along with the pull rod 551, the clamping jaw 59 and the clamping plate 56 are driven to move downwards under the action of the pull rod 551 and the gravity of the cutter, and when the clamping plate 56 moves downwards, because the upper end of the connecting rod 55 is connected to the fixing plate 51 and is positioned at the periphery of the sleeve 52, under the limiting action of the connecting rod 55, the clamping plate 56 moves downwards and approaches to the central line of the sleeve 52, so that the cutter is clamped more firmly.

Continuing to move the support base 20 downwardly through the sliding post 12, the tool box 60 will be nested within the annular ring 81 and will not move downwardly with the support base 20, at which point the passivation housing 30 will be aligned with the support base 20 by rotating the primary bevel disk 70 and rotating the turret 80 again. The passivating agent is poured into the passivating agent box 30, the support base 20 moves upwards through the sliding column 12, the support base 20 moves upwards to enable the passivating agent box 30 to be clamped in the cavity 21, the passivating agent box 30 continues to move upwards along with the support base 20, the passivating agent box 30 moves upwards to be close to the gear box 40, and a cutter clamped at the lower end of the gear box 40 extends into the passivating agent box 30 and contacts with the passivating agent. The motor 41 is powered on to drive the central rod 42 to rotate, the central rod 42 rotates to drive the driving gear 43 to rotate, the driving gear 43 is meshed with the transmission gear 45, the transmission rod 44 and the driving gear 46 rotate along with the driving gear 43, and the driving gear 46 is meshed with the driven gear 48, so that the driven gear 48 and the rotating rod 47 rotate along with the driving gear 46. The tool holder 50 is disposed at the lower end of the drive link 44, and rotation of the drive link 44 will rotate the tool holder 50, thereby causing the tool to spin within the passivating agent for passivation.

In the passivation process of the cutter, if the passivation effect needs to be enhanced, the passivation box 30 can be moved upwards again through the sliding column 12 until the key groove 33 in the passivation box 30 is clamped with the external key strip 491 of the inner gear ring 49, the inner part of the inner gear ring 49 is meshed with the transmission gear 45, the transmission gear 45 can drive the inner gear ring 49 to rotate, the inner gear ring 49 and the passivation box 30 do not rotate in the circumferential direction, the passivation box 30 is in rotating fit with the concave cavity 21, the passivation box 30 can rotate under the action of the inner gear ring 49, the passivation box 30 can rotate, the cutter can revolve in the passivation box 30, and therefore the cutter can be passivated under the action of the rotation and revolution at the same time, and the.

In the passivation process of the cutter, if the passivation effect needs to be enhanced, the electromagnet 27 can be electrified through the switch, the slider 23 can move upwards under the action of the magnetic force after the electromagnet 27 is electrified, so that the support rod 25 extends out of the column cavity 22, the sliding hole 32 can be matched with the support rod 25, and the protrusion can extend into the thread groove 26; when the protrusion moves to the end of the thread groove 26, the protrusion enters the other thread groove 26 to slide, because the two thread grooves 26 are arranged oppositely, the passivation box 30 can move reversely, the protrusion can continuously move up and down in the process of sliding in the two thread grooves 26, the passivation box 30 can continuously move up and down, the cutter can also move up and down to be passivated while rotating and revolving in the passivation machine, and therefore the cutting edge of the cutter is passivated in all directions, and the passivation effect is better. The passivation box 30 is connected with the outer part of the inner gear ring 49 in a vertical sliding mode, the inner gear ring 49 can continuously drive the passivation box 30 to rotate, and the up-and-down movement of the passivation box 30 is not influenced.

After the tool is dulled, the support 20 is moved downwards by the sliding column 12, and the blunting box 30 is placed in the circular hole 81 of the rotating frame 80, and is further moved downwards from the support 20 to separate the blunting box 30 from the cavity 21. The turret 80 is again rotated by rotating the primary bevel disk 70 to align the tool box 60 with the support base 20. The support base 20 is moved upward by the slide column 12, the lower end of the tool box 60 is engaged with the cavity 21, and the support base 20 is further moved upward to bring the tool box 60 closer to the gear housing 40. The tool pocket 61 corresponds to the position of the tool holder 50 and the tool will again extend into the tool pocket 61. As the weight of the upwardly moving tool in the tool pocket 61 is removed, the clamp plate 56 is pushed up by the tool pocket 61 away from the tool, thereby releasing the grip on the tool, allowing the tool to quickly drop into the tool pocket 61, thereby completing the passivation of the tool and removing the tool.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The machining device for the hard alloy cutter comprises a rack, a passivation box, a gear box and a base, wherein the gear box is fixed at the upper end of the rack, and the base is fixed at the lower end of the rack; a column cavity is arranged at the center of the concave cavity, a sliding block is arranged in the column cavity in a vertically sliding manner, a supporting rod is arranged on the sliding block, a positive thread groove and a negative thread groove are formed in the supporting rod, and the two thread grooves are connected end to end; a sliding cavity for the support rod to extend into is arranged in the center of the lower end of the passivation box, a sliding hole matched with the support rod is arranged at the bottom of the sliding cavity, and a protrusion connected with the thread groove in a sliding mode is arranged on the inner wall of the sliding hole;

2. The machining device for the hard alloy tool as claimed in claim 1, further comprising a transfer frame, wherein the middle part of the transfer frame is rotatably arranged with the machine frame, the tool box and the passivation box are both in an inverted circular truncated cone shape, two circular ring holes capable of respectively clamping and placing the transfer frame and the passivation box are arranged on the transfer frame, and the two circular ring holes are symmetrically arranged along the machine frame.

3. The machining device for the hard alloy tool as claimed in claim 2, wherein the transfer frame is provided with a secondary bevel gear plate at a rotational connection with a frame, the frame is provided with a cross bar, the cross bar is rotatably provided with a primary bevel gear plate engaged with the secondary bevel gear plate, and the primary bevel gear plate is provided with a handle for rotating the primary bevel gear plate.

4. The machining device for the hard alloy tool as claimed in claim 1, wherein a plurality of key bars are arranged on the outer portion of the inner gear ring, and key grooves in sliding fit with the key bars are arranged on the inner portion of the passivation box.

5. The machining device for cemented carbide tools according to claim 1, characterized in that the inner wall of the tool pocket is provided with a sponge pad for protecting the tool.

6. The machining apparatus for cemented carbide tools according to any one of claims 1-5, wherein the number of the clamping units is four, four clamping units are evenly distributed around the drum, the inner side of the clamping plate is arc-shaped, and a rubber pad is arranged on the inner side of the clamping plate.

7. The machining device for the hard alloy tool as claimed in claim 6, wherein the sliding column is a hydraulic sliding column, a magnetic block is arranged at the bottom of the sliding block, and an electromagnet which is electrified and repulsed by the magnetic block is arranged at the bottom of the column cavity.