Half axle gear internal spline quenching equipment

Abstract

The utility model relates to the technical field of gear machining equipment, and particularly discloses half axle gear internal spline quenching equipment which comprises a quenching furnace body, a placing column, a placing frame, an air inlet pipe, a first branch pipe, a second branch pipe, an air suction pipe and an air suction pump, and a reciprocating assembly is fixedly installed on one side of the upper surface of the top cover, a rotating assembly is fixedly installed on the inner side of the reciprocating assembly, and a resistance type heating coil corresponding to the containing column and the containing frame is fixedly installed at the bottom end, extending to the quenching furnace body cavity, of the rotating assembly. The internal spline heating device is reasonable and practical in structure and convenient to operate, the internal spline position of the half axle gear can be rapidly and uniformly heated, the problem that related devices and equipment are damaged quickly due to high temperature can be effectively avoided, the service life of the internal spline heating device is prolonged, convenience is brought to production and machining, and use requirements can be well met.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear processing equipment technical field, concretely is a kind of half axle gear inner spline quenching equipment. BACKGROUND

[0002] At present, the common gear quenching on market is all put into the high-temperature quenching furnace, and methane, ethane and other gases are introduced into the quenching furnace, so that the gear surface is carburized, then the carburized gear is directly immersed into quenching oil for cooling quenching, so that the gear surface has better wear resistance and hardness, while the gear inside still maintains toughness;But for the half axle gear with inner spline, using such device for quenching, directly filling methane and other gases into the quenching furnace, the gas is not easy to reach the inner spline position, so that the carburizing effect at the inner spline position is poor;And the temperature of one end of the heating position in the quenching furnace is higher, the internal temperature distribution is uneven, so that the overall heating effect of the inner spline is uneven, and the inner spline will be deformed after quenching, thereby being damaged. Therefore, the existing gear carburizing and quenching equipment has the problems of poor carburizing effect at the inner spline position of the gear and uneven heating at the inner spline position.

[0003] The Chinese utility model patent with application number 201921751556.9 solves the above problems to some extent, but since the adjusting heating equipment is mostly inside the quenching furnace body, it is easy to accelerate the damage of related devices due to high temperature, shorten the service life, and bring adverse effects to production and processing, which cannot meet the use requirements well, therefore, a half axle gear inner spline quenching equipment is proposed. UTILITY MODEL CONTENT

[0004] To effectively solve the problems in the background art and overcome the technical defects in the prior art, the utility model provides the following technical solutions:

[0005] A half axle gear inner spline quenching equipment, comprising a quenching furnace body, a placing column, a placing rack, an air inlet pipe, a first branch pipe, a second branch pipe, an air extraction pipe and an air extraction pump, a top cover is arranged at the opening of the top end of the quenching furnace body, a reciprocating assembly is fixedly installed on one side of the top surface of the top cover, a rotating assembly is fixedly installed on the inner side of the reciprocating assembly, and an electric resistance heating coil corresponding to the placing column and the placing rack is fixedly installed at the bottom end of the quenching furnace body cavity.

[0006] As a preferred technical scheme of the utility model, the utility model also discloses a quenching furnace body, a lifting assembly, a reciprocating assembly and a rotating assembly are arranged on the top of the quenching furnace body, the lifting assembly is used for lifting the quenching furnace body, the reciprocating assembly is used for reciprocating the quenching furnace body, and the rotating assembly is used for rotating the quenching furnace body.

[0007] As a preferred technical scheme of the utility model, the reciprocating assembly contains a fixed frame, a sliding block, a lead screw, a guide rod and a reciprocating motor, the fixed frame is fixedly installed on the back of the top surface of the top cover, the guide rod is fixedly installed between the top and the bottom of the inner wall of the fixed frame, the lead screw is rotatably connected between the top and the bottom of the inner wall of the fixed frame through a bearing, the guide rod and the lead screw are parallel to each other, the guide rod is slidably connected with the sliding hole on the upper surface of the sliding block, the lead screw is threadedly connected with the threaded hole on the upper surface of the sliding block, the reciprocating motor is fixedly installed on the upper surface of the fixed frame, and the output shaft of the reciprocating motor is fixedly connected with the top end of the lead screw.

[0008] As a preferred technical scheme of the utility model, the rotating assembly contains a rotating motor, a connecting plate, a rotating rod and a through hole, the connecting plate is fixedly installed on the inner side of the sliding block, the center of the top cover is provided with the through hole, the bottom of the connecting plate is rotatably connected with the rotating rod through a bearing, the bottom end of the rotating rod extends to the inner cavity of the quenching furnace body through the through hole, the outer side of the rotating rod is slidably connected with the inner wall of the through hole, the resistance heating coil is fixedly installed on the outer side of the bottom end of the rotating rod, the rotating motor is fixedly installed on the upper surface of the connecting plate, and the output shaft of the rotating motor is fixedly connected with the top end of the rotating rod.

[0009] Compared with the prior art, the half shaft gear inner spline quenching equipment has the advantages of reasonable and practical structure, convenient operation, can quickly and uniformly heat the position of the half shaft gear inner spline, effectively avoids the damage of related devices caused by high temperature, prolongs the service life, brings convenience to production and processing, and meets the use requirement well. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structure schematic view of the utility model.

[0011] Figure 2 It is a side view of the utility model.

[0012] Figure 3 It is a structure schematic view of the utility model.

[0013] Figure 4 It is a structure schematic view of the utility model.

[0014] Figure 5 It is a structure schematic view of the utility model.

[0015] In the drawing: quenching furnace body 1, placing column 2, placing rack 3, top cover 4, lifting assembly 5, fixed seat 51, electric lifting rod 52, lifting block 53, reciprocating assembly 6, fixed frame 61, sliding block 62, lead screw 63, guide rod 64, reciprocating motor 65, rotating assembly 7, rotating motor 71, connecting plate 72, rotating rod 73, through hole 74, resistance heating coil 8, observation window 9, air inlet pipe 10, first branch pipe 11, second branch pipe 12, air exhaust pipe 13, air exhaust pump 14. DETAILED DESCRIPTION

[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0017] Please refer to Figures 1-5 The present application provides a technical solution: a half shaft gear inner spline quenching equipment, comprising a quenching furnace body 1, a placing column 2, a placing rack 3, an air inlet pipe 10, a first branch pipe 11, a second branch pipe 12, an air exhaust pipe 13 and an air exhaust pump 14 (specifically, the quenching furnace body 1 is provided with a hollow placing column 2, and the bottom of the quenching furnace body 1 is connected with the air exhaust pipe 13; the tangent direction of the side surface of the placing column 2 is connected with the air inlet pipe 10, and the air inlet pipe 10 is connected with the first branch pipe 11 and the second branch pipe 12; the top of the placing column 2 is provided with an annular placing rack 3, the air exhaust pipe 3 is connected with the air exhaust pump 11, and the air exhaust pipe 3 is provided with a check valve; the first branch pipe 11 and the second branch pipe 12 are both connected with a switch valve, and this part of content is prior art, so it will not be described in detail here), and the opening at the top end of the quenching furnace body 1 is matched with a top cover 4, one side of the upper surface of the top cover 4 is fixedly installed with a reciprocating assembly 6, the inner side of the reciprocating assembly 6 is fixedly installed with a rotating assembly 7, and the rotating assembly 7 extends to the bottom end of the cavity of the quenching furnace body 1 and is fixedly installed with a resistance heating coil 8 corresponding to the placing column 2 and the placing rack 3.

[0018] Further, it further comprises two lifting assemblies 5, and the two lifting assemblies 5 are symmetrically fixedly installed on the outer side of the quenching furnace body 1, and the lifting assembly 5 comprises a fixed seat 51, an electric lifting rod 52 and a lifting block 53, the fixed seat 51 is fixedly installed on the outer side of the quenching furnace body 1, the upper surface of the fixed seat 51 is fixedly installed with the electric lifting rod 52, the top end of the electric lifting rod 52 is fixedly installed with the lifting block 53, and the inner side end of the lifting block 53 is fixedly connected with the outer side of the top cover 4; the lifting of the lifting block 53 is driven by the electric lifting rod 52, which can drive the lifting of the top cover 4 to open and close, thereby facilitating the taking and placing of the half shaft gear.

[0019] Furthermore, the reciprocating assembly 6 includes a fixed frame 61, a slider 62, a lead screw 63, a guide rod 64, and a reciprocating motor 65. The fixed frame 61 is fixedly installed on the rear side of the upper surface of the top cover 4. The guide rod is fixedly installed between the top and bottom of the inner wall of the fixed frame 61. The lead screw 63 is rotatably connected between the top and bottom of the inner wall of the fixed frame 61 via a bearing. The guide rod 64 is parallel to the lead screw 63. The guide rod 64 is slidably connected to the sliding hole on the upper surface of the slider 62. The lead screw 63 is threadedly connected to the threaded hole on the upper surface of the slider 62. The reciprocating motor 65 is fixed. The output shaft of the reciprocating motor 65 is fixedly connected to the top of the lead screw 63 and installed on the upper surface of the fixed frame 61. The reciprocating motor 65 drives the lead screw 63 to rotate, which in turn drives the rotating component 7 to rise and fall. This causes the resistance heating coil 8 to descend into the interior of the half-shaft gear placed on the placement frame 3, and causes the resistance heating coil 8 to move up and down reciprocally inside the half-shaft gear, which is beneficial for uniformly rotating and heating the internal spline of the half-shaft gear placed on the placement frame 3.

[0020] Furthermore, the rotating assembly 7 includes a rotating motor 71, a connecting plate 72, a rotating rod 73, and a through hole 74. The connecting plate 72 is fixedly installed on the inner side of the slider 62. The top cover 4 has a through hole 74 in its center. The rotating rod 73 is rotatably connected to the center of the bottom of the connecting plate 72 via a bearing. The bottom end of the rotating rod 73 extends through the through hole 74 into the inner cavity of the quenching furnace body 1. The outer side of the rotating rod 73 is slidably connected to the inner wall of the through hole 74. The resistance heating coil 8 is fixedly installed on the outer side of the bottom end of the rotating rod 73. The rotating motor 71 is fixedly installed on the upper surface of the connecting plate 72. The output shaft of the rotating motor 71 is fixedly connected to the top end of the rotating rod 73. By rotating the rotating rod 73 through the rotating motor 71, the resistance heating coil 8 can be rotated, which can uniformly rotate and heat the internal spline of the half-shaft gear placed on the placement frame 3.

[0021] The lifting assembly 5 and reciprocating assembly 6, which are set on the outside of the quenching furnace body 1, can achieve the function of lifting and rotating evenly heating, and can also play the role of heat insulation and preventing high temperature from accelerating the damage of devices and equipment such as electric lifting rod 52 and rotating motor 71.

[0022] Specifically, the fixed base 51, lifting block 53, connecting plate 72 and rotating rod 73 are all made of heat-insulating material, which can further insulate against heat and prevent damage to the electric lifting rod 52 and rotating motor 71.

[0023] Furthermore, the quenching furnace body 1 can also be equipped with an observation window 9, which facilitates observation of the interior of the quenching furnace body 1.

[0024] When using:

[0025] Open the top cover 4 using the lifting assembly 5, place the half-shaft gear on the placement rack 6 at the top of the placement column 2, and then close the top cover 4. Next, start the vacuum pump 14 to draw the quenching furnace 1 to a low-pressure state through the vacuum pipe 13 connected to the bottom of the quenching furnace body 1 (the quenching furnace is equipped with a thermometer and a pressure gauge to easily monitor the temperature and pressure inside the quenching furnace body 1). The check valve on the vacuum pipe 13 prevents gas from flowing back from the vacuum pipe 13 after the vacuum pump 14 stops drawing air. Subsequently, the reciprocating assembly 6 drives the rotating assembly 7 and the resistance heating coil 8 to extend downwards, causing the resistance heating coil 8 to descend and extend into the half-shaft gear. The reciprocating assembly 6 maintains the up-and-down reciprocating movement of the resistance heating coil 8 inside the half-shaft gear, and the rotating motor is started. 71 drives the resistance heating coil 8 to rotate, so that the energized resistance heating coil 8 heats itself and evenly heats the internal spline of the half-shaft gear to a certain temperature; then, the switch valve on the first branch pipe 11 is opened, so that the carburizing gas is introduced into the placement column 2 through the air inlet pipe 10 from the tangential direction of the placement column 2. After the carburizing gas spirals up, it evenly passes through the internal spline position, so that the internal spline position can be carburized evenly; after the carburizing is completed, the energization of the resistance heating coil 8 is stopped and it is reset. Then, the switch valve on the first branch pipe 11 is closed and the switch valve on the second branch pipe 12 is opened, so that the high-pressure quenching gas enters the placement column 2 along the tangential direction of the quenching furnace body 1, and spirals up to evenly cool the internal spline of the half-shaft gear.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quenching device for internal splines of a half-shaft gear, comprising a quenching furnace body (1), a placement column (2), a placement rack (3), an air inlet pipe (10), a first branch pipe (11), a second branch pipe (12), an exhaust pipe (13), and an exhaust pump (14), characterized in that: A top cover (4) is provided at the opening at the top of the quenching furnace body (1). A reciprocating assembly (6) is fixedly installed on one side of the upper surface of the top cover (4). A rotating assembly (7) is fixedly installed on the inner side of the reciprocating assembly (6). A resistance heating coil (8) corresponding to the placement column (2) and the placement rack (3) is fixedly installed at the bottom end of the cavity of the quenching furnace body (1) of the rotating assembly (7).

2. The quenching equipment for internal splines of a half-shaft gear according to claim 1, characterized in that: It also includes a lifting assembly (5), there are two lifting assemblies (5), the two lifting assemblies (5) are symmetrically fixedly installed on the outside of the quenching furnace body (1) respectively. The lifting assembly (5) includes a fixed seat (51), an electric lifting rod (52) and a lifting block (53). The fixed seat (51) is fixedly installed on the outside of the quenching furnace body (1). The electric lifting rod (52) is fixedly installed on the upper surface of the fixed seat (51). The lifting block (53) is fixedly installed at the top of the electric lifting rod (52). The inner end of the lifting block (53) is fixedly connected to the outer side of the top cover (4).

3. The half-shaft gear internal spline quenching equipment according to claim 1, characterized in that: The reciprocating assembly (6) includes a fixed frame (61), a slider (62), a lead screw (63), a guide rod (64), and a reciprocating motor (65). The fixed frame (61) is fixedly installed on the rear side of the upper surface of the top cover (4). The guide rod (63) is fixedly installed between the top and bottom of the inner wall of the fixed frame (61). The lead screw (63) is rotatably connected between the top and bottom of the inner wall of the fixed frame (61) through a bearing. The guide rod (64) is parallel to the lead screw (63). The guide rod (64) is slidably connected to the sliding hole on the upper surface of the slider (62). The lead screw (63) is threadedly connected to the threaded hole on the upper surface of the slider (62). The reciprocating motor (65) is fixedly installed on the upper surface of the fixed frame (61). The output shaft of the reciprocating motor (65) is fixedly connected to the top end of the lead screw (63).

4. The half-shaft gear internal spline quenching equipment according to claim 3, characterized in that: The rotating assembly (7) includes a rotating motor (71), a connecting plate (72), a rotating rod (73), and a through hole (74). The connecting plate (72) is fixedly installed on the inner side of the slider (62). The top cover (4) has a through hole (74) in the center. The center of the bottom of the connecting plate (72) is rotatably connected to the rotating rod (73) through a bearing. The bottom end of the rotating rod (73) extends through the through hole (74) to the inner cavity of the quenching furnace body (1). The outer side of the rotating rod (73) is slidably connected to the inner wall of the through hole (74). The resistance heating coil (8) is fixedly installed on the outer side of the bottom end of the rotating rod (73). The rotating motor (71) is fixedly installed on the upper surface of the connecting plate (72). The output shaft of the rotating motor (71) is fixedly connected to the top end of the rotating rod (73).

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