CN111411200A

CN111411200A - Tooth surface quenching device for rack

Info

Publication number: CN111411200A
Application number: CN202010422729.3A
Authority: CN
Inventors: 张绍明
Original assignee: Taizhou Lead Rack Co ltd
Current assignee: Taizhou Lead Rack Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-07-14

Abstract

The invention provides a tooth surface quenching device for a rack, and belongs to the technical field of machinery. It solves the problem of poor quenching effect of the existing quenching device. This flank of tooth guenching unit of rack, which comprises a frame, the quenching head, the quenching liquid shower nozzle, the anchor clamps that have the quenching dish of installation cavity and be used for centre gripping location rack, quenching head and quenching liquid shower nozzle are fixed in the frame, quenching head and quenching liquid shower nozzle all are located the top of anchor clamps and all are relative with anchor clamps, the setting of quenching dish just can make a round trip to slide along the horizontal direction relative to the frame in the frame, anchor clamps set up in the installation cavity of quenching dish, the bottom surface of anchor clamps is the plane, it can inhale the rack bottom and make it hug closely on the bottom surface of anchor clamps still to be equipped with adsorption element and adsorption element on the quenching dish. The adsorption piece can generate adsorption force to firmly adsorb the bottom of the rack, and the rack cannot deform and upwarp even being heated in the quenching process, so that the tooth surface quenching effect is improved, and the product quality is ensured.

Description

Tooth surface quenching device for rack

Technical Field

The invention belongs to the technical field of machinery, and relates to a tooth surface quenching device for a rack.

Background

The rack is a special gear with teeth distributed on a strip-shaped body and mainly comprises a straight-tooth rack and a helical-tooth rack. In the machining process of the rack, the tooth surface of the rack is often required to be quenched so that the surface structure of the rack is transformed into martensite, thereby improving the hardness, wear resistance and fatigue strength of the tooth surface and prolonging the wear-resistant life of the rack.

In the prior art, tooth surface quenching of a rack is finished on a quenching machine tool, for example, Chinese patent application (application number: 201310376016.8) discloses a workpiece quenching machine tool, which comprises a bed body; a quenching system is arranged on the bed body; a moving clamp system is arranged on the bed body; a water cooling system is also arranged on the bed body, a control system for automatically operating the machine tool according to steps is also arranged on the bed body, and the control system is connected with the quenching system; the control system is connected with the moving clamp system; the control system is connected with the water cooling system. The quenching method comprises the following steps: placing a workpiece on a motion fixture system; the moving clamp drives the workpiece to move to a quenching position; the control system controls the water cooling system to spray water to the middle position of the workpiece; the control system controls the high-frequency power supply to heat the quenching coil; the control system controls the water cooling system to spray water to the quenching coil and cool the quenching coil and the workpiece. In the existing quenching machine tool, in the process of quenching the rack, the rack is in a strip-shaped structure, and the rack is easy to deform after being heated in the quenching process, so that the end part of the rack is upwarped, the quenching effect of the tooth surface of each part of the rack is easy to be inconsistent, and meanwhile, the whole rack is slightly deformed and bent after being quenched, so that the quality of a product is influenced.

In order to ensure the quality of the product, the conventional method is as follows: in the quenching process, an operator is required to knock the rack at times when holding the hammer or the hammer aside, the end part of the rack which is warped due to deformation is pressed down again, however, the rack is clamped on the clamp in the quenching process, so that the warping is difficult to observe by naked eyes, the force and frequency during knocking are completely determined by the experience of the operator, the consistency of knocking every time is difficult to be ensured, and a large amount of labor cost is required to be invested.

Disclosure of Invention

The invention aims to provide a tooth surface quenching device of a rack aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to improve the quenching effect and ensure the quality of products.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a flank of tooth guenching unit of rack, includes frame, quenching head, quenching liquid shower nozzle and is used for the anchor clamps of centre gripping location rack, quenching head and quenching liquid shower nozzle are fixed in the frame, quenching head and quenching liquid shower nozzle all are located the top of anchor clamps and all with anchor clamps are relative, its characterized in that, this guenching unit still including the quenching dish that has the installation cavity, the setting of quenching dish is in just can be relative in the frame the horizontal direction makes a round trip to slide, anchor clamps set up in the installation cavity of quenching dish, the bottom surface of anchor clamps is the plane, it just still adsorbs to be equipped with on the quenching dish the adsorption element can be inhaled the rack bottom and make it hug closely on the bottom surface of anchor clamps.

When the quenching device is used for quenching, the rack is clamped and positioned on the clamp, the quenching head is used for quenching the rack, the quenching liquid spray head is used for spraying quenching liquid in the quenching process to cool and improve the quenching performance, and the quenching disc slides along the length direction of the rack relative to the rack, so that each tooth surface on the rack is quenched. The quenching disc is arranged to be provided with an installation cavity structure, so that quenching liquid sprayed out in the quenching process cannot flow randomly, can be collected in the installation cavity of the quenching disc in a centralized manner, and is convenient for subsequent recovery and treatment. Simultaneously, this application designs the bottom surface of anchor clamps for the plane to set up the absorption structure on quenching the dish, the absorption can produce the adsorption affinity and firmly hold the bottom of rack and make it keep hugging closely on the bottom surface of anchor clamps all the time, consequently, in the quenching process, even the rack is heated, it can not take place to warp and upwarp, has improved the effect of flank of tooth quenching, has guaranteed the quality of product.

In the tooth surface quenching device of the rack, the adsorption piece is a vacuum generator, the bottom of the clamp is provided with a plurality of adsorption holes, and the adsorption holes are communicated with the vacuum generator through pipelines. In the quenching process, the vacuum generator generates vacuum adsorption force, and can firmly adsorb the bottom of the rack to enable the rack to be always tightly attached to the bottom surface of the clamp, so that the rack cannot deform and upwarp even if heated in the quenching process, the tooth surface quenching effect is improved, and the product quality is ensured.

In the tooth surface quenching device of the rack, the adsorption piece is an electromagnetic chuck which is in a long strip shape and is arranged at the bottom of the clamp, and the magnetic conduction panel of the electromagnetic chuck is flush with the bottom surface of the clamp. The rack is clamped and positioned in the clamp to be attached to the bottom surface of the clamp and the magnetic conductive panel of the electromagnetic chuck, the electromagnetic chuck is electrified through the internal coil to generate magnetic force, the rack is firmly attracted through the magnetic conductive panel and is kept to be attached to the bottom surface of the clamp all the time, therefore, in the quenching process, even if the rack is heated, the rack cannot deform and upwarp, the tooth surface quenching effect is improved, and the product quality is ensured.

In the tooth surface quenching device of the rack, the quenching disc comprises a bottom plate and a disc-shaped disc body, the inner cavity of the disc body is the installation cavity, the clamp is arranged in the disc body, the disc body is arranged on the bottom plate, a slide rail is fixed on the rack, the bottom plate is connected to the slide rail in a sliding manner, and a driving assembly capable of driving the bottom plate to slide back and forth along the slide rail is further arranged on the rack. Through the structure of slide rail, can realize quenching the relative frame of dish and make a round trip to slide to can realize quenching the processing to the flank of tooth of whole rack.

In the tooth surface quenching device of the rack, the number of the slide rails is two, the bottom parts of the two sides of the bottom plate are respectively provided with the slide block, the slide blocks are connected to the slide rails in a sliding manner, and the two ends of the slide rails are respectively provided with the limiting parts for limiting the sliding stroke of the slide blocks. The slide rails and the slide blocks are arranged into two groups and are respectively close to two sides of the bottom plate, so that the quenching disc can stably realize the back-and-forth sliding relative to the rack, the tooth surface of the whole rack can be quenched, and the quenching effect and the product quality are ensured. The limiting part limits the moving stroke to avoid sliding over the head.

In the tooth surface quenching device for the rack, the disk body is rectangular, the disk body is positioned above the bottom plate, and the two ends of the disk body are connected with the bottom plate through the lifting assembly capable of driving the disk body to lift up and down. Through lifting unit's setting, can adjust the height between the relative bottom plate of disk body to can adapt to the rack of various not unidimensional, guarantee that each rack by the centre gripping back and quench and can keep reasonable distance between the head, thereby improve the effect of quenching, guarantee the quality of product.

In the tooth surface quenching device of the rack, two groups of the lifting assemblies are arranged at two ends of the tray body, the two groups of the lifting assemblies at the same end are respectively arranged close to two sides of the tray body, each lifting assembly comprises an installation seat, a worm wheel, a worm and a lifting screw rod, the installation seats are cylindrical and fixed on the bottom plate, the worm wheels are axially limited in the installation seats and can rotate in the installation seats, the worm wheels are in transmission connection with the worm wheels, one ends of the lifting screw rods are fixed with the tray body, and the other ends of the lifting screw rods penetrate through the worm wheels and are in threaded connection with the worm wheels. When the adjusting device needs to be adjusted, the worm is rotated to drive the worm wheel to rotate, and the worm wheel can drive the lifting screw to move up and down, so that the relative bottom plate of the plate body can be adjusted up and down, racks with different sizes can be adapted, a reasonable distance can be kept between each clamped rack and the quenching head, the quenching effect is improved, and the product quality is guaranteed. The lifting assembly may also be a hydraulic cylinder and a push rod.

In the tooth surface quenching device of the rack, two worms at the same end of the disc body are connected into a whole through the connecting rod, and one of the worms is also provided with the rotating wheel. Through the arrangement, the synchronous lifting of the same end of the tray body can be realized, so that the lifting consistency is ensured.

In the tooth surface quenching device of the rack, the driving assembly comprises a motor, a screw rod and a nut, a rotating shaft of the motor is connected with the screw rod and can drive the screw rod to rotate, the nut is fixed at the bottom of the bottom plate, and the screw rod is in transmission connection with the nut. The motor drives the screw rod to rotate, so that the screw rod and the nut fixing base plate can be driven to slide along the sliding block, and the tooth surface of the whole rack can be quenched. The drive assembly may also be a cylinder and pushrod arrangement.

In the tooth surface quenching device of the rack, the bottom of the disk body is also provided with a liquid drainage interface which can be communicated with the mounting cavity of the disk body. The liquid discharge interface can be communicated with the liquid storage barrel through a liquid discharge pipe, and the concentrated recovery treatment of the quenching liquid can be realized.

In the tooth surface quenching device of the rack, the quenching liquid nozzle is positioned at one side of the quenching head, the frame is also provided with the smoke exhaust tube, the smoke exhaust tube is positioned at one side of the quenching liquid nozzle, and the smoke exhaust port of the smoke exhaust tube is opposite to the quenching liquid nozzle. The smoke exhaust tube can intensively exhaust and treat waste smoke generated in the quenching process, and pollution is reduced.

In the tooth surface quenching device of the rack, the disc body is internally provided with the mounting frame, the clamp is arranged on the mounting frame, the mounting frame is provided with the baffle, the disc body is also internally provided with the supporting blocks, and the supporting blocks are positioned on one side of the baffle, which is far away from the clamp. The mounting bracket makes the clamp keep a certain distance from the bottom of the plate body, and the rack is prevented from being soaked by quenching liquid. The supporting shoe can be placed the rack of treating quenching for material loading convenience more, the setting up of supporting shoe is equivalent to and has carried out the bed hedgehopping with the rack of placing above, avoids the rack to be soaked by the quenching liquid simultaneously. The baffle can prevent sparks and the like generated in the quenching process from splashing to the rack placed on the supporting block, influence is caused on the performance of the rack to be quenched, the sparks generated can be also prevented from splashing to the body of a worker, and safety is improved.

Compared with the prior art, the tooth surface quenching device of the rack has the following advantages:

1. the bottom surface of the clamp is designed to be a plane, and the adsorption piece structure is arranged on the quenching disc, so that the adsorption piece can generate adsorption force to firmly adsorb the bottom of the rack to enable the bottom of the rack to be always kept to be tightly attached to the bottom surface of the clamp, and therefore, in the quenching process, even if the rack is heated, the rack cannot deform and upwarp, the tooth surface quenching effect is improved, and the product quality is guaranteed.

2. The quenching disc is arranged to be provided with an installation cavity structure, so that quenching liquid sprayed out in the quenching process cannot flow randomly, can be collected in the installation cavity of the quenching disc in a centralized manner, and is convenient for subsequent recovery and treatment.

3. The relative bottom plate of disk body can be adjusted from top to bottom to can adapt to the rack of various not unidimensional, guarantee that each rack can keep reasonable distance between by the centre gripping back and the quenching head, thereby improve the effect of quenching, guarantee the quality of product.

4. The smoke exhaust tube can intensively exhaust and treat waste smoke generated in the quenching process, and pollution is reduced.

5. The supporting shoe is used for placing the rack of treating quenching, the material loading of being convenient for, and the spark that the baffle can prevent to produce in the quenching process has improved the security performance.

Drawings

Fig. 1 is a schematic structural view of a tooth surface quenching device of a rack clamping the rack in the first embodiment.

Fig. 2 is a perspective view of the tooth surface quenching apparatus of the rack according to the first embodiment.

FIG. 3 is a side view of the tooth surface quenching apparatus of the present rack in accordance with the first embodiment.

Fig. 4 is a sectional view taken in the direction of a-a in fig. 3.

Fig. 5 is a sectional view taken in the direction B-B in fig. 3.

Fig. 6 is a sectional view taken in the direction C-C in fig. 3.

In the figure, 1, a frame; 1a, a first frame body; 1b, a second frame body; 2. quenching the head; 3. a quenching liquid spray head; 4. a clamp; 4a, adsorption holes; 5. a quenching plate; 5a, a tray body; 5a1, mounting cavity; 5a2, a drainage interface; 5b, a bottom plate; 6. a vacuum generator; 7. a slide rail; 8. a slider; 9. a limiting member; 10. a lifting assembly; 10a, a mounting seat; 10b, a worm wheel; 10c, a worm; 10d, lifting screw rods; 11. a connecting rod; 12. a rotating wheel; 13. a motor; 14. a screw rod; 15. a nut; 16. a smoke exhaust tube; 17. a mounting frame; 17a, a baffle plate; 18. a support block; 19. a rack.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1-6, the tooth surface quenching device of the rack comprises a frame 1, a quenching head 2, a quenching liquid spray head 3, a clamp 4 for clamping and positioning the rack 19, and a quenching disc 5 with a mounting cavity 5a 1. The frame 1 comprises a frame body 1a and a frame body II 1b, the frame body 1a and the frame body II 1b are arranged in a split mode, a liquid storage tank used for storing quenching liquid is arranged on the frame body II 1b, the quenching head 2 and the quenching liquid spray head 3 are both fixed on the frame 1, and the quenching liquid spray head 3 is communicated with the liquid storage tank.

The quenching plate 5 includes a bottom plate 5b and a plate body 5a in a disc shape, and the plate body 5a is disposed on the bottom plate 5 b. Be fixed with slide rail 7 on the support body 1a, slide rail 7 has two, and the both sides bottom of bottom plate 5b all is equipped with slider 8, and slider 8 sliding connection still is equipped with on frame 1 and can drives bottom plate 5b along slide rail 7 gliding drive assembly that makes a round trip, and the both ends of slide rail 7 all are equipped with the locating part 9 that is used for restricting the slider 8 slip stroke on the slide rail 7. In this embodiment, the driving assembly includes a motor 13, a lead screw 14 and a nut 15, a rotating shaft of the motor 13 is connected with the lead screw 14 and can drive the lead screw 14 to rotate, the nut 15 is fixed at the bottom of the bottom plate 5b, the lead screw 14 is in transmission connection with the nut 15, and the motor 13 drives the lead screw 14 to rotate, so that the bottom plate 5b fixed with the nut 15 can be driven to slide along the sliding block 8. The limiting part 9 is a limiting rod.

Specifically, the inner cavity of the disc body 5a is a mounting cavity 5a1, the clamp 4 is located in the mounting cavity 5a1, the quenching head 2 and the quenching liquid spray head 3 are both located above the clamp 4 and are both opposite to the clamp 4, and the quenching disc 5 is provided with a mounting cavity 5a1 structure, so that the quenching liquid sprayed out in the quenching process cannot flow randomly, and can be collected in the mounting cavity 5a1 of the quenching disc 5 in a centralized manner, and subsequent recovery and treatment are facilitated.

Be equipped with mounting bracket 17 in the disk body 5a, anchor clamps 4 are fixed on mounting bracket 17, and mounting bracket 17 makes anchor clamps 4 can keep certain interval with the bottom of disk body 5a, avoids rack 19 to be soaked by the quenching liquid. The mounting frame 17 is provided with a baffle 17a, the disk body 5a is further provided with a plurality of supporting blocks 18, and the supporting blocks 18 are positioned on one side of the baffle 17a far away from the clamp 4. The supporting block 18 can be used for placing the rack 19 to be quenched, so that the feeding is more convenient, the rack 19 to be placed on the supporting block is raised, and the rack 19 is prevented from being soaked by quenching liquid. The baffle 17a can prevent sparks and the like generated in the quenching process from splashing on the rack 19 placed on the supporting block 18, influence the performance of the rack 19 to be quenched, and also can prevent the generated sparks from splashing on the body of a worker, thereby improving the safety.

Furthermore, be equipped with holding strip one and holding strip two on the mounting bracket 17, holding strip one is fixed on mounting bracket 17, and the holding strip two is located one side of holding strip one, still is equipped with a plurality of cylinders on mounting bracket 17, and a plurality of cylinders are along the length direction evenly distributed of holding strip two and the ejector pin of cylinder all is fixed with holding strip two, and a plurality of cylinders can synchronous drive holding strip two and slide along the bottom surface of mounting bracket 17 and be close to or keep away from holding strip one, form anchor clamps 4 that are used for centre gripping fixed rack 19 between holding strip one and the holding strip two, and the mounting bracket 17 bottom surface part between holding strip one and the holding strip two is the bottom surface of anchor clamps 4 promptly.

The bottom surface of the clamp 4 is a plane, and the quenching disc 5 is also provided with an adsorption piece which can adsorb the bottom of the rack 19 to enable the rack to be tightly attached to the bottom surface of the clamp 4. In this embodiment, the adsorption member is a vacuum generator 6, the bottom of the clamp 4 is provided with a plurality of adsorption holes 4a, and the adsorption holes 4a are communicated with the vacuum generator 6 through pipelines. The bottom surface of the clamp 4 is designed to be a plane, and the vacuum generator 6 generates vacuum adsorption force in the quenching process, so that the bottom of the rack 19 can be firmly adsorbed to be always kept to be tightly attached to the bottom surface of the clamp 4, therefore, in the quenching process, even if the rack 19 is heated, the rack cannot be deformed and upwarps, the tooth surface quenching effect is improved, and the product quality is ensured.

The tray body 5a is rectangular, the tray body 5a is positioned above the bottom plate 5b, and two ends of the tray body 5a are connected with the bottom plate 5b through a lifting assembly 10 capable of driving the tray body 5a to ascend and descend. Two ends of the tray body 5a are provided with two sets of the lifting assemblies 10, and the two sets of the lifting assemblies 10 at the same end are respectively arranged close to two sides of the tray body 5 a. The lifting assembly 10 comprises a mounting seat 10a, a worm wheel 10b, a worm 10c and a lifting screw 10d, wherein the mounting seat 10a comprises a cylindrical seat body and a cover cap, the seat body is fixed on the bottom plate 5b, and the cover cap is fixed with the seat body. The worm wheel 10b is axially limited in the mounting seat 10a and can rotate in the seat body, a notch is formed in the side portion of the seat body, the peripheral portion of the worm wheel 10b extends out of the notch, the worm 10c is arranged on one side of the seat body and is rotatably connected to the bottom plate 5b, and the worm 10c is meshed with the worm wheel 10 b. One end of the lifting screw rod 10d is fixed with the disc body 5a, and the other end of the lifting screw rod penetrates through the base body and is in threaded connection with a central hole of the worm wheel 10 b. Two worms 10c positioned at the same end of the disc body 5a are connected into a whole through a connecting rod 11, and one worm 10c is also provided with a rotating wheel 12. Through rotating runner 12, can drive worm 10c and rotate, worm 10c can drive worm wheel 10b and rotate, and worm wheel 10b can drive lifting screw 10d and reciprocate to realize that relative bottom plate 5b of disk body 5a adjusts from top to bottom, thereby can adapt to the rack 19 of various not unidimensional, guarantee that each rack 19 is by the centre gripping back and can keep reasonable distance between quenching head 2, thereby improve the effect of quenching, guarantee the quality of product. The lift assembly 10 may also be a hydraulic cylinder and push rod.

The bottom of the tray body 5a is also provided with a liquid drainage interface 5a2 which can be communicated with the installation cavity 5a1 of the tray body 5 a. The liquid discharge interface 5a2 can be communicated with a liquid storage barrel for recovering the quenching liquid through a liquid discharge pipe, and the concentrated recovery treatment of the quenching liquid can be realized.

In addition, the quenching liquid spray head 3 is positioned at one side of the quenching head 2, the frame 1 is also provided with a smoke exhaust tube 16, the smoke exhaust tube 16 is positioned at one side of the quenching liquid spray head 3, and a smoke exhaust port of the smoke exhaust tube 16 is opposite to the quenching liquid spray head 3. The smoke exhaust tube 16 can intensively exhaust and treat waste smoke generated in the quenching process, so that pollution is reduced.

When the quenching device is used for quenching, the rack 19 is clamped and positioned on the clamp 4, the quenching head 2 is used for quenching the rack 19, the quenching liquid spray head 3 is used for spraying quenching liquid in the quenching process to cool and improve the quenching performance, and the quenching disc 5 slides along the length direction of the rack 19 relative to the rack 1, so that each tooth surface on the rack 19 is quenched.

Example two

The structure of the present embodiment is substantially the same as that of the first embodiment, except that: the adsorption piece is an electromagnetic chuck which is in a long strip shape and is arranged at the bottom of the clamp 4, and a magnetic conduction panel of the electromagnetic chuck is flush with the bottom surface of the clamp 4. The rack 19 is clamped and positioned in the clamp 4, and is attached to the bottom surface of the clamp 4 and the magnetic conductive panel of the electromagnetic chuck, the electromagnetic chuck generates magnetic force by electrifying the internal coil, and the rack 19 is firmly sucked by the magnetic conductive panel to be always kept attached to the bottom surface of the clamp 4, so that the rack 19 cannot deform and upwarp even if heated in the quenching process, the tooth surface quenching effect is improved, and the product quality is ensured.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although 1, rack is used more herein; 1a, a first frame body; 1b, a second frame body; 2. quenching the head; 3. a quenching liquid spray head; 4. a clamp; 4a, adsorption holes; 5. a quenching plate; 5a, a tray body; 5a1, mounting cavity; 5a2, a drainage interface; 5b, a bottom plate; 6. a vacuum generator; 7. a slide rail; 8. a slider; 9. a limiting member; 10. a lifting assembly; 10a, a mounting seat; 10b, a worm wheel; 10c, a worm; 10d, lifting screw rods; 11. a connecting rod; 12. a rotating wheel; 13. a motor; 14. a screw rod; 15. a nut; 16. a smoke exhaust tube; 17. a mounting frame; 17a, a baffle plate; 18. a support block; 19. rack, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a flank of tooth guenching unit of rack, includes frame (1), quenching head (2), quenching liquid shower nozzle (3) and is used for anchor clamps (4) of centre gripping location rack (19), quenching head (2) and quenching liquid shower nozzle (3) are fixed in frame (1), quenching head (2) and quenching liquid shower nozzle (3) all are located the top of anchor clamps (4) and all with anchor clamps (4) are relative, its characterized in that, this guenching unit is still including quenching dish (5) that have installation cavity (5a1), quenching dish (5) set up frame (1) is last and can be relative frame (1) makes a round trip to slide along the horizontal direction, anchor clamps (4) set up in the installation cavity (5a1) of quenching dish (5), the bottom surface of anchor clamps (4) is the plane, quenching dish (5) are last still to be equipped with to adsorb and the piece can inhale rack (19) bottom and make it hug closely it be in the bottom surface of anchor clamps (4) is hugged closely .

2. The tooth surface quenching device of the rack according to claim 1, wherein the adsorption member is a vacuum generator (6), the bottom of the clamp (4) is provided with a plurality of adsorption holes (4a), and the plurality of adsorption holes (4a) are communicated with the vacuum generator (6) through a pipeline.

3. The gear surface quenching device for the rack according to claim 1, wherein the suction member is an electromagnetic chuck, the electromagnetic chuck is in a long strip shape and is arranged at the bottom of the clamp (4), and a magnetic conductive panel of the electromagnetic chuck is flush with the bottom surface of the clamp (4).

4. The tooth surface quenching device for the rack according to claim 1, 2 or 3, wherein the quenching disc (5) comprises a bottom plate (5b) and a disc-shaped disc body (5a), the inner cavity of the disc body (5a) is the installation cavity (5a1), the clamp (4) is arranged in the disc body (5a), the disc body (5a) is arranged on the bottom plate (5b), a sliding rail (7) is fixed on the rack (1), the bottom plate (5b) is connected to the sliding rail (7) in a sliding manner, and a driving assembly capable of driving the bottom plate (5b) to slide back and forth along the sliding rail (7) is further arranged on the rack (1).

5. The tooth surface quenching device for the rack according to claim 4, wherein the disc body (5a) is rectangular, the disc body (5a) is positioned above the bottom plate (5b), and two ends of the disc body (5a) are connected with the bottom plate (5b) through a lifting assembly (10) capable of driving the disc body (5a) to lift up and down.

6. The gear surface hardening device of a rack according to claim 5, wherein both ends of the disc (5a) are provided with two sets of the above-mentioned lifting assemblies (10), and two groups of lifting components (10) at the same end are respectively arranged close to the two sides of the plate body (5a), the lifting component (10) comprises a mounting seat (10a), a worm wheel (10b), a worm (10c) and a lifting screw (10d), the mounting seat (10a) is cylindrical and fixed on the bottom plate (5b), the worm wheel (10b) is axially limited in the mounting seat (10a) and can rotate in the mounting seat (10a), the worm (10c) is in transmission connection with a worm wheel (10b), one end of the lifting screw (10d) is fixed with the disc body (5a), and the other end of the lifting screw penetrates through the worm wheel (10b) and is in threaded connection with the worm wheel (10 b).

7. The gear quenching device for the tooth surface of the rack according to claim 6, wherein two worms (10c) located at the same end of the disk body (5a) are connected into a whole through a connecting rod (11), and one worm (10c) is further provided with a rotating wheel (12).

8. The tooth surface quenching device of the rack as claimed in claim 7, characterized in that the bottom of the disc body (5a) is further provided with a liquid drainage port (5a2) capable of communicating with the mounting cavity (5a1) of the disc body (5 a).

9. The gear surface quenching device for the rack according to claim 1, 2 or 3, wherein the quenching liquid nozzle (3) is positioned at one side of the quenching head (2), the rack (1) is further provided with a smoke exhaust tube (16), the smoke exhaust tube (16) is positioned at one side of the quenching liquid nozzle (3), and a smoke exhaust port of the smoke exhaust tube (16) is opposite to the quenching liquid nozzle (3).

10. The tooth surface quenching device for the rack according to claim 4, characterized in that a mounting frame (17) is arranged in the disk body (5a), the clamp (4) is arranged on the mounting frame (17), a baffle (17a) is arranged on the mounting frame (17), a plurality of supporting blocks (18) are further arranged in the disk body (5a), and the supporting blocks (18) are positioned on one side of the baffle (17a) far away from the clamp (4).