CN218202935U

CN218202935U - Camshaft intermediate frequency guenching unit

Info

Publication number: CN218202935U
Application number: CN202222635973.5U
Authority: CN
Inventors: 杨卫国; 顾彬; 金利东
Original assignee: Jingjiang Guomao Auto Parts Manufacturing Co ltd
Current assignee: Jingjiang Guomao Auto Parts Manufacturing Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-03
Anticipated expiration: 2032-10-08

Abstract

The application relates to the field of quenching devices, in particular to a camshaft intermediate frequency quenching device which comprises an intermediate frequency induction coil, a mounting piece, a cooling assembly and a clamping mechanism; the mounting piece is provided with a heating cylinder, and the peripheral side wall of the heating cylinder is matched with the peripheral side of the profiling cam; the heating cylinder is provided with an installation cavity, and the medium-frequency induction coil is wound in the installation cavity for multiple circles; the cooling assembly is used for cooling the copying cam after quenching; the clamping mechanism is used for clamping the camshaft in the heating cylinder. The quenching device has the effect of improving the quenching uniformity of the profiling cam.

Description

Intermediate frequency quenching device for camshaft

Technical Field

The application relates to the field of quenching devices, in particular to a camshaft intermediate frequency quenching device.

Background

The camshaft is one of key parts of an engine, and the medium-frequency induction quenching is carried out on the camshaft to improve the hardness of the camshaft and the shaft diameter part and increase the wear resistance.

In the correlation technique, the staff usually adopts annular intermediate frequency induction coil as the heating pipe to practical clamping tool centre gripping camshaft process in from intermediate frequency induction coil, in order to realize heating the cam, put the camshaft to cold aquatic fast again, cool off the processing, thereby realize quenching the processing to the cam.

In view of the above-mentioned related technologies, the inventor believes that the camshaft includes a shaft body and a profiling cam, when the profiling cam passes through the annular medium frequency induction coil, the side edge of the profiling cam is irregular, the distance between the outer side wall of the profiling cam and the inner wall of the medium frequency induction coil is uneven, especially the temperature difference between the peach point and the base circle is too large, so that the depth difference between the hardened layers after quenching at the base circle and the peach point is large, even the peach point is overheated or melted, and the cracking at the peach point or the soft band phenomenon at the cam lift position is easily caused.

SUMMERY OF THE UTILITY MODEL

In order to improve the quenching uniformity of the profiling cam, the application provides a camshaft intermediate frequency quenching device.

The application provides a camshaft intermediate frequency guenching unit adopts following technical scheme:

a camshaft intermediate frequency quenching device comprises an intermediate frequency induction coil, a mounting piece, a cooling assembly and a clamping mechanism; the mounting piece is provided with a heating cylinder, and the peripheral side wall of the heating cylinder is matched with the peripheral side of the profiling cam; the heating cylinder is provided with an installation cavity, and the medium-frequency induction coil is wound in the installation cavity for multiple circles; the cooling assembly is used for cooling the copying cam after quenching; the clamping mechanism is used for clamping the camshaft in the heating cylinder.

By adopting the technical scheme, the medium-frequency induction coil is wound with a plurality of coils in the heating cylinder, the cam shaft is placed in the heating cylinder by the clamping mechanism, so that eddy current is generated around the cam arranged in the heating cylinder, the cam passing through the medium-frequency induction coil is heated to the required temperature, and then the cam shaft is cooled by the cooling assembly, so that the quenching treatment of the cam shaft is realized; because the peripheral side wall of the heating cylinder is matched with the peripheral side of the copying cam, when the copying cam passes through the medium-frequency induction coil, the consistency of distances at all positions between the side edge of the copying cam and the inner wall of the heating cylinder is improved, and the quenching uniformity of the side edge of the copying cam is improved; the heating cylinder can also protect the intermediate frequency induction coil.

Optionally, the cooling assembly includes a water collecting tank, a first circulating pipe, a second circulating pipe, a third circulating pipe, a refrigerator and a pressurizing water pump, the water collecting tank is located below the heating cylinder, the first circulating pipe is communicated with one end of the water collecting tank far away from the heating cylinder, the other end of the first circulating pipe is communicated with one end of the refrigerator, one end of the refrigerator far away from the first circulating pipe is communicated with the second circulating pipe, and one end of the second circulating pipe far away from the refrigerator is communicated with a water pumping end of the pressurizing water pump; one end of the water collecting barrel, which is close to the heating barrel, is provided with a water storage cavity, and the inner wall of the water storage cavity is provided with a water spraying hole; one end of the third circulating pipe is communicated with the water storage cavity, and the other end of the third circulating pipe is communicated with the pressurizing end of the pressurizing water pump.

By adopting the technical scheme, water is poured into the water collecting barrel firstly, the water is pumped by the pressurizing water pump, the water enters the refrigerator through the first circulating pipe and is refrigerated into cold water, the cold water is pumped to the second circulating pipe and then flows through the second circulating pipe to enter the pressurizing water pump to be pressurized, and then the cold water is sprayed out of the water spraying hole at a high speed to the cam shaft, so that the heated cam is automatically cooled, a worker does not need to clamp the cam shaft to place the cam shaft into the water for cooling, and the automation of the intermediate frequency quenching device is improved.

Optionally, the water spraying holes are arranged obliquely, and the oblique direction of the water spraying holes faces the bottom wall of the water collecting bucket.

By adopting the technical scheme, the inclination direction of the water spraying holes faces the bottom wall of the water collecting barrel, so that the path of the water sprayed out of the water spraying holes faces the bottom wall of the water collecting barrel, and the water is not easy to splash outside the water collecting barrel.

Optionally, the clamping mechanism comprises a clamping assembly and a lifting assembly, the clamping assembly comprises a connecting rod and a pneumatic clamping jaw, one end of the connecting rod is connected with the mounting piece, and the other end of the connecting rod is connected with the pneumatic clamping jaw; the lifting assembly is used for driving the cam shaft to lift.

Through adopting above-mentioned technical scheme, put into the camshaft after the pneumatic clamping jaw opens, then drive pneumatic clamping jaw presss from both sides the camshaft tightly, rethread lifting unit drive connecting rod drives pneumatic clamping jaw and goes up and down for the camshaft goes up and down, thereby arranges the camshaft in the heating cylinder automatically, makes the cam heated through intermediate frequency induction coil, has further improved intermediate frequency guenching unit's automation.

Optionally, the lifting assembly comprises a rotating motor, a screw rod and a sliding block; the mounting piece is provided with an accommodating cavity, the screw rod is positioned in the accommodating cavity, two ends of the screw rod are in threaded connection with two ends of the mounting piece in the length direction, and the screw rod penetrates through the sliding block and is in threaded connection with the sliding block; a sliding groove is formed in the inner wall of one side, away from the connecting rod, of the accommodating cavity, and one end of the sliding block is located in the sliding groove; the mounting part is close to one side of connecting rod and has been seted up the spacing groove, the spacing groove with hold the cavity intercommunication, the connecting rod passes the spacing groove and the slider is kept away from the one end of spout and is connected.

Through adopting above-mentioned technical scheme, start to rotate the motor, drive the screw rod and rotate, the screw rod rotates and drives the slider lift, and the one end of slider is located the spout for the slider is difficult to rotate along with the rotation of screw rod, and the other end of slider passes spacing groove and connecting rod to be connected, thereby the slider lift drives the connecting rod lift, and then realizes that the camshaft goes up and down.

Optionally, a rubber pad is arranged on one surface, close to the cam shaft, of the finger of the pneumatic clamping jaw.

Through adopting above-mentioned technical scheme, the setting up of rubber pad has increased the friction between the finger of pneumatic clamping jaw and the camshaft for the camshaft is difficult for breaking away from pneumatic clamping jaw, has improved the stability of pneumatic clamping jaw centre gripping camshaft.

Optionally, a dovetail block is arranged at one end, close to the sliding groove, of the sliding block, a dovetail groove is arranged on the sliding groove, and the dovetail block is located in the dovetail groove.

Through adopting above-mentioned technical scheme, the forked tail piece is located the dovetail and improves the gliding stability of slider.

Optionally, a heat insulation layer is arranged in the installation cavity.

Through adopting above-mentioned technical scheme, the setting of heat preservation has improved the lasting performance of intermediate frequency induction coil heating.

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

1. the middle-frequency induction coil is wound with a plurality of circles in the heating cylinder, the cam shaft is placed in the heating cylinder by the clamping mechanism, so that eddy current is generated around the cam placed in the heating cylinder, the cam passing through the middle-frequency induction coil is heated to the required temperature, and then cooling treatment is carried out through the cooling assembly, so that quenching treatment of the cam shaft is realized; because the peripheral side wall of the heating cylinder is matched with the peripheral side of the copying cam, when the copying cam passes through the medium-frequency induction coil, the consistency of distances at all positions between the side edge of the copying cam and the inner wall of the heating cylinder is improved, and the quenching uniformity of the side edge of the copying cam is improved; the arrangement of the heating cylinder can also play a role in protecting the intermediate frequency induction coil;

2. water is poured into the water collecting barrel firstly, the water is pumped by the pressurizing water pump, the water enters the refrigerator through the first circulating pipe and is refrigerated into cold water, the cold water is pumped to the second circulating pipe and then flows into the pressurizing water pump through the second circulating pipe to be pressurized, and then the cold water is sprayed to the cam shaft from the water spraying hole at a high speed, so that the heated cam is automatically cooled, a worker does not need to clamp the cam shaft and put the cam shaft into the water for cooling, and the automation of the intermediate frequency quenching device is improved;

3. the camshaft is put into after the pneumatic clamping jaw opens, then drives pneumatic clamping jaw and presss from both sides tightly the camshaft, and rethread lifting unit drive connecting rod drives pneumatic clamping jaw and goes up and down for the camshaft goes up and down, thereby arranges the camshaft in the heating cylinder automatically, makes the cam heated through intermediate frequency induction coil, has further improved intermediate frequency guenching unit's automation.

Drawings

FIG. 1 is a schematic view of the overall structure of a camshaft intermediate frequency quenching device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram for showing a medium frequency induction coil and an insulating layer in the embodiment of the present application.

Fig. 3 is a schematic structural diagram for showing a rubber pad in the embodiment of the present application.

Fig. 4 is an enlarged view of a point a in fig. 3.

Fig. 5 is a schematic structural diagram for showing a cooling assembly in an embodiment of the present application.

Description of the reference numerals: 1. a mounting member; 11. a heating cylinder; 111. a fixing rod; 112. installing a chamber; 1121. a first chamber body; 1122. a second chamber body; 113. a heat-insulating layer; 12. a housing chamber; 13. a limiting groove; 14. a chute; 141. a dovetail groove; 2. a medium frequency induction coil; 3. a clamping mechanism; 31. a clamping assembly; 311. a connecting rod; 312. a pneumatic clamping jaw; 3121. a rubber pad; 32. a lifting assembly; 321. rotating the motor; 322. a screw; 323. a slider; 3231. a dovetail block; 4. a cooling assembly; 41. a water collection barrel; 42. a first circulation pipe; 43. a second circulation pipe; 44. a third circulation pipe; 45. a refrigerator; 46. a pressurizing water pump; 47. a water storage chamber; 48. a water spray hole; 5. a camshaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a camshaft intermediate frequency quenching device. Referring to fig. 1 and 2, the camshaft intermediate frequency quenching device comprises a mounting piece 1, an intermediate frequency induction coil 2, a clamping mechanism 3 and a cooling assembly 4, wherein the cooling assembly 4 is used for cooling the copying cam after quenching; the clamping mechanism 3 is used for clamping the camshaft 5 in the heating cylinder 11. The mounting part 1 is rectangular, the heating cylinder 11 is fixedly mounted on the mounting part 1, two fixing rods 111 are fixedly connected to the side wall of the heating cylinder 11, the two fixing rods 111 are respectively close to two end faces of the heating cylinder 11, and one end, far away from the heating cylinder 11, of each fixing rod 111 is fixedly connected to the side wall of the mounting part 1. An installation cavity 112 is formed in the heating cylinder 11, the intermediate frequency induction coil 2 is located in the installation cavity 112, and the arrangement of the heating cylinder 11 protects the intermediate frequency induction coil 2.

Referring to fig. 1 and 2, the if induction coil 2 is wound in the installation chamber 112 and in a plurality of turns, so that an eddy current is generated around the cam disposed in the heating cylinder 11, thereby heating the cam passing through the if induction coil 2 to a desired temperature. The peripheral side wall of the heating cylinder 11 is matched with the peripheral side of the copying cam, and when the copying cam passes through the medium-frequency induction coil 2, the consistency of distances at each position between the side edge of the copying cam and the inner wall of the heating cylinder 11 is improved, so that the quenching uniformity of the side edge of the copying cam is improved; the installation chamber 112 includes a first chamber 1121 and a second chamber 1122, the second chamber 1122 is closer to the inner wall of the heating cylinder 11 than the first chamber 1121, the if induction coil 2 is located in the first chamber 1121, and an insulating layer 113 is fixedly installed in the second chamber 1122, in this embodiment, the insulating layer 113 is an asbestos gauze, so that the continuous performance of heating by the if induction coil 2 is improved.

Referring to fig. 3 and 4, the gripping mechanism 3 includes a gripping assembly 31 and a lifting assembly 32. The mounting member 1 is provided with a containing chamber 12, and the lifting assembly 32 is located in the containing chamber 12. Clamping component 31 includes connecting rod 311 and pneumatic clamping jaw 312, and connecting rod 311's one end and pneumatic clamping jaw 312 fixed connection, and mounting member 1 has seted up spacing groove 13 near one side of connecting rod 311, and spacing groove 13 with hold the cavity 12 intercommunication, the one end of connecting rod 311 is passed spacing groove 13 and is connected with lifting component 32. One side fixed mounting that is close to camshaft 5 on pneumatic clamping jaw 312's the finger has rubber pad 3121, and rubber pad 3121 is close to the one side that pneumatic clamping jaw 312 pointed and the finger of pneumatic clamping jaw 312 closely laminates, has increased the friction between pneumatic clamping jaw 312's the finger and camshaft 5 for camshaft 5 is difficult for breaking away from pneumatic clamping jaw 312, has improved pneumatic clamping jaw 312 centre gripping camshaft 5's stability.

The camshaft 5 is put into after the pneumatic clamping jaw 312 of drive opens, then the close tight camshaft 5 of clamp in order to drive pneumatic clamping jaw 312 again, rethread lifting unit 32 drive connecting rod 311 drives pneumatic clamping jaw 312 and goes up and down for camshaft 5 goes up and down, thereby arranges camshaft 5 in heating cylinder 11 automatically, makes the cam heated through intermediate frequency induction coil 2, has further improved the automation of intermediate frequency guenching unit.

Referring to fig. 3, the elevating assembly 32 includes a rotating motor 321, a screw 322, and a slider 323. The screw rod 322 is positioned in the accommodating chamber 12, and both ends of the screw rod 322 in the length direction are in threaded connection with both ends of the mounting piece 1 in the length direction; the screw rod 322 passes through the sliding block 323 and is in threaded connection with the sliding block 323; the inner wall of the accommodating chamber 12 on the side away from the connecting rod 311 is provided with a sliding groove 14, one end of the sliding block 323 is positioned in the sliding groove 14 to slide, and the other end of the sliding block 323 is fixedly connected with the connecting rod 311 penetrating through one end of the limiting groove 13. Fixedly connected with dovetail block 3231 is gone up to slider 323 near one end of spout 14, lies in spout 14 department on the inner wall of accommodation chamber 12 and corresponds and offers the dovetail 141 that supplies dovetail block 3231 to wear to establish, and dovetail block 3231 is located dovetail 141, improves the gliding stability of slider 323. The rotating motor 321 is started, the rotating shaft of the rotating motor 321 drives the screw rod 322 to rotate, the screw rod 322 rotates to drive the sliding block 323 to ascend and descend, one end of the sliding block 323 is located in the sliding groove 14 to slide, the sliding block 323 is not prone to rotating along with the rotation of the screw rod 322, the other end of the sliding block 323 penetrates through the limiting groove 13 to be connected with the connecting rod 311, and therefore the sliding block 323 slides to drive the connecting rod 311 to ascend and descend, and the camshaft 5 is lifted and descended.

Referring to fig. 1 and 5, the cooling assembly 4 includes a water collecting tank 41, a first circulation pipe 42, a second circulation pipe 43, a third circulation pipe 44, a refrigerator 45 and a pressurizing water pump 46, the water collecting tank 41 is located below the heating cylinder 11, a water storage chamber 47 is formed at one end of the water collecting tank 41 close to the heating cylinder 11, water spraying holes 48 are formed in the inner wall of the water storage chamber 47 at equal intervals along the circumferential direction of the water collecting tank 41, the water spraying holes 48 are obliquely arranged, the oblique direction of the water spraying holes 48 faces the bottom wall of the water collecting tank 41, and therefore the path of water sprayed from the water spraying holes 48 faces the bottom wall of the water collecting tank 41, and the water is not easy to splash outside the water collecting tank 41.

Referring to fig. 1 and 5, the refrigerator 45 and the pressurizing water pump 46 are fixedly connected to a side wall of the water collecting tub 41, and the refrigerator 45 is located below the pressurizing water pump 46. One end of the first circulation pipe 42, which is far away from the heating cylinder 11, of the water collection tank 41 is communicated, the other end of the first circulation pipe 42 is communicated with one end of the refrigerator 45, which is far away from the first circulation pipe 42, is communicated with the second circulation pipe 43, and one end of the second circulation pipe 43, which is far away from the refrigerator 45, is communicated with the water pumping end of the pressurizing water pump 46; one end of the third circulation pipe 44 is communicated with a pressurizing end of the pressurizing water pump 46, and the other end of the third circulation pipe 44 is communicated with the water storage chamber 47.

Water is poured into the water collecting barrel 41 firstly, water is pumped by the pressurizing water pump 46, the water enters the refrigerator 45 through the first circulating pipe 42 and is refrigerated into cold water, the cold water is pumped to the second circulating pipe 43 and then flows through the second circulating pipe 43 and enters the pressurizing water pump 46 to be pressurized, and then the cold water is sprayed to the cam shaft 5 from the water spraying hole 48 through the third circulating pipe 44 at a high speed, so that the heated cam is automatically cooled, a worker does not need to clamp the cam shaft 5 and put the cam shaft 5 into the water for cooling, and the automation of the intermediate frequency quenching device is further improved.

The implementation principle of the camshaft intermediate frequency quenching device in the embodiment of the application is as follows: when fixing camshaft 5, first pneumatic clamping jaw 312 opens, then puts into camshaft 5, drives pneumatic clamping jaw 312 again and closes and presss from both sides camshaft 5.

When the camshaft 5 is quenched, the rotating motor 321 is started to drive the pneumatic clamping jaws 312 to clamp the camshaft 5 to lift so as to be heated by the heating cylinder 11; at the same time, the pressurizing suction pump 46 is activated so that cold water, which is continuously injected at a high speed, is ejected from the water injection holes 48 toward the heated cam, thereby performing the quenching process.

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

Claims

1. The utility model provides a camshaft intermediate frequency guenching unit, includes intermediate frequency induction coil (2), its characterized in that: the device also comprises a mounting piece (1), a cooling assembly (4) and a clamping mechanism (3); the mounting piece (1) is provided with a heating cylinder (11), and the peripheral side wall of the heating cylinder (11) is matched with the peripheral side of the copying cam; an installation cavity (112) is formed in the heating cylinder (11), and the intermediate frequency induction coil (2) is wound in the installation cavity (112) for multiple circles; the cooling assembly (4) is used for cooling the copying cam after quenching; the clamping mechanism (3) is used for clamping the camshaft (5) in the heating cylinder (11).

2. The camshaft intermediate frequency quenching device as claimed in claim 1, wherein: the cooling assembly (4) comprises a water collecting barrel (41), a first circulating pipe (42), a second circulating pipe (43), a third circulating pipe (44), a refrigerator (45) and a pressurizing water pump (46), wherein the water collecting barrel (41) is positioned below the heating barrel (11), one end, away from the heating barrel (11), of the first circulating pipe (42) is communicated with one end, away from the refrigerator (45), of the water collecting barrel (41), the other end of the first circulating pipe (42) is communicated with one end of the refrigerator (45), one end, away from the first circulating pipe (42), of the refrigerator (45) is communicated with the second circulating pipe (43), and one end, away from the refrigerator (45), of the second circulating pipe (43) is communicated with a water pumping end of the pressurizing water pump (46); one end of the water collecting barrel (41) close to the heating barrel (11) is provided with a water storage cavity (47), and the inner wall of the water storage cavity (47) is provided with a water spraying hole (48); one end of the third circulating pipe (44) is communicated with the water storage cavity (47), and the other end of the third circulating pipe (44) is communicated with the pressurizing end of the pressurizing water pump (46).

3. The camshaft intermediate frequency quenching device as claimed in claim 2, wherein: the water spraying holes (48) are obliquely arranged, and the oblique direction of the water spraying holes (48) faces to the bottom wall of the water collecting barrel (41).

4. The camshaft intermediate frequency quenching device as claimed in claim 1, wherein: the clamping mechanism (3) comprises a clamping component (31) and a lifting component (32), the clamping component (31) comprises a connecting rod (311) and a pneumatic clamping jaw (312), one end of the connecting rod (311) is connected with the mounting piece (1), and the other end of the connecting rod (311) is connected with the pneumatic clamping jaw (312); the lifting assembly (32) is used for driving the cam shaft (5) to lift.

5. The camshaft intermediate frequency quenching device as claimed in claim 4, wherein: the lifting assembly (32) comprises a rotating motor (321), a screw rod (322) and a sliding block (323); an accommodating chamber (12) is formed in the mounting part (1), the screw rod (322) is located in the accommodating chamber (12), two ends of the screw rod (322) are in threaded connection with two ends of the mounting part (1) in the length direction, and the screw rod (322) penetrates through the sliding block (323) and is in threaded connection with the sliding block (323); a sliding groove (14) is formed in the inner wall of one side, away from the connecting rod (311), of the accommodating cavity (12), and one end of the sliding block (323) is located in the sliding groove (14); limiting groove (13) have been seted up to one side that installed part (1) is close to connecting rod (311), limiting groove (13) and accommodation chamber (12) intercommunication, connecting rod (311) pass limiting groove (13) and slider (323) and keep away from the one end connection of spout (14).

6. The camshaft intermediate frequency quenching device as claimed in claim 4, wherein: and a rubber pad (3121) is arranged on one surface of the finger of the pneumatic clamping jaw (312) close to the camshaft (5).

7. The camshaft intermediate frequency quenching device as claimed in claim 5, wherein: one end, close to the sliding groove (14), of the sliding block (323) is provided with a dovetail block (3231), the sliding groove (14) is a dovetail groove (141), and the dovetail block (3231) is located in the dovetail groove (141).

8. The camshaft intermediate frequency quenching device as claimed in claim 1, wherein: and a heat-insulating layer (113) is arranged in the mounting cavity (112).