Secondary quenching device

Abstract

The utility model relates to the technical field of secondary quenching, in particular to a secondary quenching device which is characterized in that a mould body is of a hollow columnar structure and is provided with an inner diameter surface and an outer diameter surface which are opposite to each other, a plurality of grooves parallel to the axial direction of the mould body are formed in the outer diameter surface, and the outer diameter surface is used for supporting the inner wall of a ferrule; the width height of the mould body is greater than or equal to that of the ferrule; the inner diameter of the auxiliary gasket is larger than the outer diameter of the clamping fixture body and smaller than the outer diameter of the end face of the ferrule. The secondary quenching equipment comprises a machine body with a cavity, a driving device installed on the machine body, a transmission assembly connected with the driving device and a plurality of rollers connected with the transmission assembly. The cavity is used for containing a cooling quenching oil medium, and the rollers are arranged at the bottom of the cavity in parallel. According to the secondary quenching device, the ferrule can rotate in the cooling quenching oil medium and is subjected to secondary quenching, so that the ferrule and the cooling quenching oil medium are more fully contacted, and the secondary quenching effect and the secondary quenching efficiency are favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to secondary quenching technical field, concretely is a secondary quenching device. BACKGROUND

[0002] At present, the secondary quenching cooling in the heat treatment process of bearing ring of carburizing steel is completed in quenching oil, and the inner surface of the ring needs to be supported by a mould during cooling to control the size expansion and deformation. Specifically, a carburizing mould is installed in the bearing ring of carburizing steel to support the inner diameter of the ring, and then the ring with the installed carburizing mould is placed in a device with cooling quenching oil medium. Usually, stirring blades are arranged in the device to make the cooling quenching oil medium flow, and the surface of the metal ring is contacted by the cooling quenching oil medium. In this process, the carburizing mould mounted on the ring has a mould claw, so the ring can only be static in the cooling quenching oil medium, and the ring cannot be fully contacted with the cooling quenching oil medium, so the secondary quenching cooling effect is poor. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a secondary quenching device, which comprises a special carburizing mould and a secondary quenching equipment, so that the ring with the installed carburizing mould can be placed in the cooling quenching oil medium and rotated, and the carburizing mould without the mould claw can be dismounted from the ring after secondary quenching by cooperating with the auxiliary gasket, thereby improving the secondary quenching effect and facilitating operation.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a technical scheme of a secondary quenching device, which comprises a mould body, an auxiliary gasket and a secondary quenching equipment. The mould body has a hollow columnar structure, and has an inner diameter surface and an outer diameter surface opposite to each other. A plurality of grooves parallel to the axial direction of the mould body are arranged on the outer diameter surface, and the outer diameter surface is used for supporting the inner wall of the ring. The width of the mould body is greater than or equal to the width of the ring. The inner diameter of the auxiliary gasket is greater than the outer diameter of the mould body and less than the outer diameter of the end surface of the ring. The secondary quenching equipment comprises a machine body with a cavity, a driving device mounted on the machine body, a transmission assembly connected with the driving device, and a plurality of rollers connected with the transmission assembly. The cavity is used for containing the cooling quenching oil medium, and the plurality of rollers are arranged in parallel on the bottom of the cavity.

[0005] Further, at least one annular groove is arranged on the outer diameter surface of the mould body along the circumferential direction.

[0006] Further, two annular grooves are arranged.

[0007] Further, the grooves of the mould body have arc surfaces recessed towards the axis of the mould body.

[0008] Further, the secondary quenching device comprises a gasket, when the gasket is coaxially arranged on one side of the mold body, at least part of the end surface of the gasket is in contact with the end surface of the mold body.

[0009] Further, the inner diameter of the gasket is equal to the inner diameter of the mold body, and the outer diameter of the gasket is less than or equal to the outer diameter of the mold body.

[0010] Further, the transmission assembly comprises a row of upper gears and a row of lower gears which are staggered with each other, the driving device is connected with the lower gears, the lower gears are in mesh with the upper gears, and the upper gears are connected with the rollers.

[0011] The secondary quenching method using the secondary quenching device comprises the following steps:

[0012] S100, a mold body is arranged on the inner side of the sleeve ring, so that the outer diameter surface of the mold body supports the inner wall of the sleeve ring;

[0013] S200, the sleeve ring provided with the mold body is arranged between two rollers which rotate in the same direction, so that the axis of the sleeve ring is parallel to the rollers;

[0014] S300, the cavity contains a cooling quenching oil medium, the sleeve ring provided with the mold body is immersed in the cooling quenching oil medium, the driving device is turned on, the rollers are driven to rotate through the transmission assembly, so that the sleeve ring rotates and cools in the cooling quenching oil medium.

[0015] Further, the steps further comprise

[0016] S400, the sleeve ring after secondary quenching is taken out;

[0017] S500, an auxiliary gasket is arranged on the lower part of the end surface of the sleeve ring, and the head of the press machine is aligned with the mold body;

[0018] S600, the head of the press machine presses the mold body, so that the mold body is separated from the inner side of the sleeve ring.

[0019] Further, the step S500 further comprises arranging a gasket on the upper part of the mold body.

[0020] The beneficial effects of the utility model are as follows: the sleeve ring can rotate and cool in the cooling quenching oil medium, so that the contact between the sleeve ring and the oil medium is more sufficient, which is beneficial to improve the cooling effect and ensure the hardness of the product. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the mold body in an embodiment of the utility model;

[0022] Figure 2The cross-sectional view of the mold body in an embodiment of the utility model;

[0023] Figure 3 The use state diagram (when unloading the carburizing mold) of the mold body in another embodiment of the utility model;

[0024] Figure 4 The use state diagram (when secondary quenching) of the mold body in another embodiment of the utility model;

[0025] Figure 5 The structure schematic view of the secondary quenching equipment in an embodiment of the utility model;

[0026] Figure 6 The top view of the secondary quenching equipment in an embodiment of the utility model;

[0027] Figure 7 The structure schematic view of the transmission assembly in an embodiment of the utility model;

[0028] Figure 8 The cross-sectional view of the secondary quenching equipment in an embodiment of the utility model;

[0029] Figure 9 The top view of the use state of the secondary quenching equipment in an embodiment of the utility model;

[0030] Figure 10 The use state diagram (when secondary quenching) of the secondary quenching equipment in an embodiment of the utility model;

[0031] In the drawing:

[0032] 100, the mold body, 110, the inner diameter surface, 120, the outer diameter surface, 121, the groove, 1211, the arc surface, 122, the annular groove,

[0033] 200, the auxiliary gasket,

[0034] 300, the secondary quenching equipment, 310, the fuselage, 311, the cavity, 320, the driving device, 321, the driving pulley, 330, the transmission assembly, 331, the upper gear, 332, the lower gear, 333, the driven pulley, 334, the belt, 340, the roller,

[0035] 400, the gasket,

[0036] 10, the sleeve ring. DETAILED DESCRIPTION

[0037] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein, and skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0038] Referring to Figures 1-8 , a secondary quenching device in an embodiment of the present application is shown, which comprises a mold body 100, an auxiliary gasket 200 and a secondary quenching device 300; the mold body 100 is used to support the inner wall of the ring 10, the secondary quenching device 300 is used to quench the ring 10 with the mold body 100 installed, and the auxiliary gasket 200 is used to cooperate with the press to disassemble the mold body 100 installed on the ring 10.

[0039] Referring to Figure 1 , Figure 2 and Figure 3 , the mold body 100 is in a hollow cylindrical structure, the mold body 100 has opposite inner diameter surface 110 and outer diameter surface 120, the outer diameter surface 120 is provided with a plurality of grooves 121 parallel to the axial direction of the mold body 100, the outer diameter surface 120 is used to support the inner wall of the ring 10, the width of the mold body 100 is greater than or equal to the width of the ring 10, in the embodiment, the width of the mold body 100 is equal to the width of the ring 10, so that the mold body 100 can completely support the inner wall of the ring 10 except the position where the groove 121 is arranged.

[0040] Referring to Figure 4 , the inner diameter of the auxiliary gasket 200 is greater than the outer diameter of the mold body 100 and less than the outer diameter of the end surface of the ring 10. In this way, when the head of the press exerts pressure on the mold body 100, the mold body 100 and the auxiliary gasket 200 do not interfere with each other, and the mold body 100 can be separated from the inside of the ring 10.

[0041] Referring to Figures 5-8 , the secondary quenching device 300 comprises a machine body 310 with a cavity 311, a driving device 320 installed on the machine body 310, a transmission assembly 330 connected with the driving device 320, and a plurality of rollers 340 connected with the transmission assembly 330; the cavity 311 is used to accommodate the cooling quenching oil medium, and the plurality of rollers 340 are arranged in parallel in the bottom of the cavity 311.

[0042] As Figure 9 and Figure 10As shown, in use, the sleeve 10 is placed between adjacent mutually parallel rollers 340, the driving device 320 is started, the driving device 320 drives the transmission assembly 330 to drive the plurality of rollers 340 to rotate, and the sleeve 10 rotates under the action of friction, and in the rotating process, the sleeve 10 is in constant contact with the cooling quenching oil medium to perform secondary quenching.

[0043] It should be noted that in order to facilitate the removal of the mold from the inside of the sleeve 10 after the secondary quenching is completed, the prior art mold is provided with a base and at least two connecting ears / paws on one side end face of the cylindrical carburizing mold. In order to facilitate force application, the connecting ears / paws will protrude beyond the outer diameter of the sleeve 10 after the carburizing mold is installed. Due to the presence of the connecting ears / paws, the sleeve 10 can only be placed in the oil medium and cannot roll by itself. If rolling occurs, the connecting ears / paws will interfere with and collide with the internal structure of the secondary quenching machine. Therefore, the cooling quenching oil medium is usually agitated to make the cooling quenching oil medium contact the sleeve 10. However, since the sleeve 10 is stationary, the medium may not be able to fully contact the sleeve 10. Figure 4 As shown, in the present embodiment, an auxiliary gasket 200 is provided in the dismounting link, which plays an auxiliary role when the sleeve 10 is dismounted from the carburizing mold. In use, the end face of the sleeve 10 with the mold body 100 is placed on the auxiliary gasket 200, and the press exerts downward pressure on the intermediate mold body 100 to dismount the carburizing mold from the inside of the sleeve 10. Due to the participation of the press, time and labor are saved, and efficiency is improved. In addition, during the secondary quenching process, the mold body 100 is completely installed inside the sleeve 10 without protruding connecting ears / paws, and there is no part of the mold body 100 extending outside the sleeve 10. Therefore, the rollers 340 rotating inside the quenching machine can be used to drive the sleeve 10 to rotate, and the sleeve 10 can be fully contacted with the cooling quenching oil medium during the rotating process to perform secondary quenching, which is beneficial to improving the cooling effect and efficiency. In specific settings, the rollers 340 are made of round steel. In addition, in order to avoid tilting of the sleeve 10, a hook can be used to assist in lifting the sleeve 10 from above. The hook and the sleeve 10 can slide relative to each other and only play a certain limiting role.

[0044] Referring to Figure 2 In an embodiment, at least one annular groove 122 is formed on the outer diameter surface of the mold body 100 along the circumferential direction. The annular groove 122 is an oil groove, which enables the oil to flow in the carburizing mold and accelerates the cooling speed.

[0045] Preferably, in an embodiment, two annular grooves 122 are formed.

[0046] Referring to Figure 1In an embodiment, the groove 121 of the jig body 100 has a concave arc surface 1211 which is recessed towards the axis of the jig body 100. The groove 121 can provide a passage for the cooling quenching oil medium to flow through, and the concave arc surface 1211 can expand the cross-sectional area of the passage, facilitating the sufficient contact between the cooling quenching oil medium and the ring, and optimizing the effect of the secondary quenching.

[0047] In an embodiment, the secondary quenching device comprises a gasket 400, when the gasket 400 is coaxially arranged on one side of the jig body 100, at least part of the end surface of the gasket 400 is in contact with the end surface of the jig body 100.

[0048] In an embodiment, the inner diameter of the gasket 400 is equal to the inner diameter of the jig body 100, and the outer diameter of the gasket 400 is less than or equal to the outer diameter of the jig body 100. The materials of the auxiliary gasket 200 and the gasket 400 are both bearing low-carbon steel. The carburized jig 100 which has been shrunk and trapped in the bearing inner ring 10 can be separated and enter the auxiliary gasket 200 by pressing the convex gasket 400 using a press.

[0049] Referring to Figure 5 and Figure 7 In an embodiment, the transmission assembly 330 comprises a row of upper gears 331 and a row of lower gears 332 which are staggered with each other, the driving device 320 is connected with the lower gears 332, the lower gears 332 are engaged with the upper gears 331, and the upper gears 331 are connected with the rollers 340. Specifically, the main shaft of the driving device 320 is provided with a driving pulley 321, the driving pulley 321 is connected to a driven pulley 333 through a belt 334, the driven pulley 333 is coaxially connected with one of the lower gears 332, and the lower gears 332 are engaged with the upper gears 331. The rotation of the main shaft drives the rotation of the driving pulley 321 and the driven pulley 333, and then the rotation of the lower gears 332 drives the rotation of the upper gears 331, and the rollers 340 drive the rotation of the ring 10.

[0050] Referring to Figures 1-10 , the secondary quenching method using the above-mentioned secondary quenching device comprises the following steps:

[0051] Step S100, as shown in Figure 3 , the jig body 100 is installed on the inner side of the ring 10, so that the outer diameter surface of the jig body 100 supports the inner wall of the ring 10;

[0052] Step S200, referring to Figure 9 and Figure 10 , the ring 10 with the jig body 100 installed is placed between two adjacent rollers 340 which rotate in the same direction, so that the axis of the ring 10 is parallel to the rollers 340;

[0053] Step S300, the cavity 311 is provided with a cooling quenching oil medium, the ring 10 installed with the mold body 100 is immersed in the cooling quenching oil medium, the driving device 320 is opened, the roller 340 is driven to rotate through the transmission assembly 330, so that the ring 10 is rotated in the cooling quenching oil medium and is quenched for the second time.

[0054] Further, in an embodiment, the steps further comprise

[0055] Step S400, the cooled ring 10 is taken out.

[0056] Step S500, as Figure 4 shown, the auxiliary gasket 200 is placed at the lower part of one side end face of the ring 10, and the head of the press is aligned with the mold body 100.

[0057] Step S600, the head of the press is pressed down to the mold body 100, so that the mold body 100 is separated from the inner side of the ring 10.

[0058] Further, in an embodiment, the step S500 further comprises placing the gasket 400 on the upper part of the ring 10.

[0059] The secondary quenching method can make the ring 10 rotate in the cooling quenching oil medium and be quenched for the second time through the specific secondary quenching device, so that the contact between the ring 10 and the cooling quenching oil medium is more sufficient, and the secondary quenching effect and the secondary quenching efficiency are improved.

[0060] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0062] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, can understand the concrete meaning of the above-mentioned term in the utility model according to specific circumstances.

[0063] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be first and second features direct contact, or first and second features indirectly contact through intermediate medium.Moreover, first feature is "on", "above" and "on" second feature can be first feature is directly above or obliquely above second feature, or just indicate that the horizontal height of first feature is higher than second feature.First feature is "under", "below" and "under" second feature can be first feature is directly below or obliquely below second feature, or just indicate that the horizontal height of first feature is less than second feature.It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element.When an element is referred to as "connected to" another element, it can be directly connected to another element or there can be a middle element.The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

Claims

1. A secondary quenching device, characterized by: Comprising a mold body in a hollow columnar structure, the mold body having opposite inner and outer diameter surfaces, the outer diameter surface being provided with a plurality of grooves parallel to the axial direction of the mold body, the outer diameter surface being used to support the inner wall of a ring, the width of the mold body being greater than or equal to the width of the ring; an auxiliary gasket, the inner diameter of the gasket being greater than the outer diameter of the mold body and less than the outer diameter of the end surface of the ring; a secondary quenching device, comprising a machine body having a cavity, a driving device mounted on the machine body, a transmission assembly connected with the driving device, and a plurality of rollers connected with the transmission assembly; the cavity is used to accommodate a cooling quenching oil medium, and the plurality of rollers are arranged parallel to each other at the bottom of the cavity.

2. A secondary quenching device according to claim 1, characterized in that: The outer diameter surface of the mold body is provided with at least one annular groove along the circumferential direction.

3. A secondary quenching device according to claim 2, characterized in that: The annular groove is provided with two.

4. The secondary quenching device of claim 1, wherein: The grooves of the mold body have arc surfaces recessed towards the axis of the mold body.

5. The secondary quenching device of claim 1, wherein: The secondary quenching device comprises a gasket, when the gasket is coaxially arranged on one side of the mold body, at least part of the end surface of the gasket is in contact with the end surface of the mold body.

6. A secondary quenching device according to claim 5, characterized in that: The inner diameter of the gasket is equal to the inner diameter of the mold body, and the outer diameter of the gasket is less than or equal to the outer diameter of the mold body.

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