Integral inductor for heat treatment of long-handle inner ball cage

Abstract

The utility model relates to the technical field of induction quenching, in particular to an integral inductor for heat treatment of a long-handle inner ball cage, which comprises an inductor body, a rotary drum and a fixing component, the inductor body comprises a working section and a fixed section, the shape of an inner cavity of the working section is consistent with that of a workpiece, the working section is composed of a copper pipe and a magnetic conductor, a rotating cavity is formed in the fixed section, an extrusion groove is formed in the rotating cavity, and a rotating cylinder is rotationally installed in the rotating cavity; a mounting groove is formed in the rotary drum, the mounting groove penetrates through the rotary drum, a fixing assembly is arranged in the mounting groove, the fixing assembly is used for fixing the handle end of a workpiece, overall synchronous quenching is achieved through the overall inductor, the machining efficiency is improved, meanwhile, the unification of the machining rotating speed and the fixing effect is achieved through the fixing assembly on the rotary drum, and the machining efficiency is improved. And the quenching stability is guaranteed, and the machining quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of induction hardening technology, specifically to an integrated induction heat treatment device for a long-handled inner ball cage. Background Technology

[0002] The inner CV joint of the drive shaft is a relatively important part in automobiles. During use, the inner CV joint needs to transmit high-speed rotating torque and withstand high-speed friction. In order to achieve the working strength of the part and extend the service life of the inner CV joint, the surface of the inner CV joint is generally hardened to improve the surface strength and wear resistance of the inner CV joint.

[0003] During the production process, the inner ball cage rod of the long-handled ball cage needs to be quenched by an inductor to improve its surface quality. The inductor is usually composed of a copper ring and a magnetic conductor. When the magnetic conductor is energized, the current heats up the copper ring, which in turn generates high temperature, thereby quenching the inner ball cage rod of the long-handled ball cage inside the copper ring, changing the internal stress of the rod and improving the surface quality of the rod.

[0004] The quenching of the inner ball cage rod of the long shank is carried out by scanning and heating the rod from the R-angle where the rod and the shell are connected. The equipment program controls the inductor to slowly and linearly rise relative to the workpiece to the spline of the rod where heat treatment is required. The scanning and heating are completed, which takes a long time.

[0005] In view of this, we propose an integral inductor for heat treatment of a long-handled inner ball cage. Utility Model Content

[0006] The purpose of this invention is to provide an integral inductor for heat treatment of an inner ball cage with a long handle, so as to solve the problem of slow quenching of inductors mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a long-handled, internal ball cage heat treatment integrated inductor, comprising an inductor body, a rotating cylinder, and a fixing assembly; the inductor body includes a working section and a fixing section, the inner cavity shape of the working section is consistent with the workpiece, the working section is composed of a copper tube and a magnetic conductor, the inner cavity of the working section is consistent with the shape of the workpiece, thereby avoiding the inductor body gradually moving to scan the workpiece and heat the workpiece, thus enabling the inductor body to perform integrated processing of the workpiece, improving work efficiency, when quenching the workpiece, only the magnetic conductor is energized, the magnetic conductor transmits the current to the copper tube, the copper tube as a whole heats up, thereby simultaneously quenching the entire rod, the fixing section has a rotating cavity, the rotating cavity has an extrusion groove, and a rotating cylinder is rotatably installed in the rotating cavity; the rotating cylinder An installation slot is provided on the top of the rotating drum. When the workpiece enters the induction heater body, the workpiece first contacts the front end of the installation slot on the rotating drum. The front end of the installation slot is interference-fitted with the workpiece, thereby allowing the rotating drum to initially fix and position the workpiece. A fixing component is provided in the installation slot to fix the handle end of the workpiece. When overall quenching is required, the workpiece needs to rotate to ensure the uniformity of its heating, thereby ensuring the quenching effect. During the rotation of the workpiece, the handle end of the workpiece may experience radial movement, which may reduce the quenching effect. At this time, the fixing component fixes the handle end of the workpiece to ensure the stability of the workpiece rotation. At the same time, the front end of the rotating drum is fixed to the workpiece, and the workpiece drives the rotating drum to rotate synchronously. The rotating drum promotes the stability of the fixation according to the rotation speed.

[0008] Preferably, the fixing assembly includes a drive shaft, a return spring, a turntable, a push rod, and a fixing block; the drive shaft is slidably mounted in the mounting groove, has a locking groove, and a drive block; the drive shaft is slidably connected to the rotating cylinder via the return spring, which is used to reset the drive shaft; the turntable is rotatably mounted to the rotating cylinder, has a drive groove that mates with the drive block, and has an arc-shaped array of grooves on the turntable, within which a push rod is slidably mounted; a fixing block is mounted on the push rod; and an array of grooves is mounted on the fixing block. Fixed protrusions; when the workpiece needs to be quenched, the workpiece is transferred into the sensor body. During the movement, the shank of the workpiece gradually squeezes the drive shaft, pushing the drive shaft to slide. The drive shaft pushes the drive groove on the turntable through the drive block on it, thereby driving the turntable to rotate. When the turntable rotates, it pulls the tie rod horizontally through the arc groove. The tie rod drives the fixed block to move centripetally to clamp the shank of the ball cage inside the long shank of the drive shaft. During the clamping process, the fixed protrusions on the fixed block enhance the friction between the fixed block and the shank of the workpiece, enhancing the fixing effect on the workpiece.

[0009] Preferably, two centrifugal springs are symmetrically installed on the rotating drum. One end of each centrifugal spring is installed in the mounting groove, and the other end is fixedly connected to a centrifugal block located inside the extrusion groove. Depending on the current applied, the heating temperature of the copper tube varies, resulting in different rotation speeds of the workpiece. When the workpiece rotation speed increases, the rotation speed of the drum also increases synchronously. The rotation of the drum generates centrifugal force, which is transmitted to the centrifugal springs, causing them to extend. The centrifugal springs push the centrifugal block to slide, and the centrifugal block contacts the inner wall of the extrusion groove on the fixed section. As the rotation speed increases, the force between the centrifugal block and the inner wall of the extrusion groove increases, as does the force between the drum and the fixed section. This makes the drum rotation more stable, thereby ensuring the stability of the fixed components installed on the drum in fixing the workpiece and preventing the turntable from slipping due to unstable rotation, which could cause the workpiece to shake.

[0010] Preferably, two centrifugal plates are fixedly mounted with pull rods, which are located inside centrifugal springs. Each pull rod has a pressing block and a locking block on one side. One end of the locking block has an inclined groove that mates with the pressing block. The locking block is directly opposite the locking groove. When the centrifugal plates slide outwards under centrifugal force, the centrifugal plates drive the pull rods to slide synchronously. The pull rods, through the pressing block, push the inclined groove of the locking block to drive the locking block to slide horizontally. The locking block slides into the locking groove on the drive block, thereby fixing the drive block and ensuring its stability under high-speed rotation. This ensures the stability of the fixed block and, consequently, the fixing effect of the fixed block on the workpiece handle.

[0011] Preferably, the locking groove is a wedge-shaped structure, and the other ends of the two locking blocks form a wedge-shaped structure that cooperates with the locking groove. The locking blocks are provided with sliders that are slidably connected to the mounting groove. The wedge-shaped structure has the effect of gradually increasing friction. As the rotation speed increases, the centrifugal force generated increases, the displacement distance of the pull plate increases, and thus the sliding distance of the locking blocks increases. This increases the length of the locking blocks entering the locking groove, thereby enhancing the fixing effect of the locking blocks on the drive shaft and achieving a unity between the workpiece processing rotation speed and the fixing effect. The locking blocks are tightly connected to the mounting groove through the sliders, thereby achieving the stability of their own sliding.

[0012] Preferably, the fixing section is an insulator, which can be made of rubber, glass, or ceramic. The insulator design of the fixing section is used to isolate the transmission of current, thereby preventing the fixing section from heating up and affecting the quenching effect on the workpiece.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this utility model achieves overall synchronous quenching through an integrated sensor, which improves processing efficiency. At the same time, by fixing the components to the rotating drum, the processing speed and fixing effect are unified, ensuring the stability of quenching and improving processing quality. Attached Figure Description

[0014] Figure 1 This is a half-sectional schematic diagram of the sensor body of this utility model;

[0015] Figure 2 This utility model Figure 1 A magnified view of point A;

[0016] Figure 3 This is a half-sectional view of the turntable of this utility model;

[0017] Figure 4 This utility model Figure 3 A magnified view of point B;

[0018] Figure 5 This is an isometric view of the fixing assembly used in this utility model;

[0019] Figure 6 This utility model Figure 5 A magnified view of point C;

[0020] Figure 7 This is a bottom view of the fixing component of this utility model;

[0021] Figure 8 This is a half-sectional view of the fixing component of this utility model;

[0022] In the picture:

[0023] 1. Sensor body; 11. Working section; 111. Copper tube; 112. Magnetic conductor; 12. Fixed section; 121. Rotating cavity; 1211. Extrusion groove;

[0024] 2. Rotating drum; 21. Mounting groove; 22. Centrifugal spring; 23. Centrifugal block; 24. Tie rod; 241. Extrusion block; 25. Locking block; 251. Inclined groove;

[0025] 3. Fixing component; 31. Drive shaft; 311. Locking groove; 3111. Wedge structure; 312. Drive block; 32. Return spring; 33. Turntable; 331. Drive groove; 332. Arc groove; 34. Push rod; 35. Fixing block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] During the production process, the inner ball cage rod of the long-handled ball cage needs to be quenched by an inductor to improve its surface quality. The inductor is usually composed of a copper ring and a magnetic conductor. When the magnetic conductor is energized, the current heats up the copper ring, which in turn generates high temperature, thereby quenching the inner ball cage rod of the long-handled ball cage inside the copper ring, changing the internal stress of the rod and improving the surface quality of the rod.

[0028] The quenching of the inner ball cage rod of the long shank is carried out by scanning and heating the rod from the R-angle where the rod and the shell are connected. The equipment program controls the inductor to slowly and linearly rise relative to the workpiece to the spline of the rod where heat treatment is required. The scanning and heating are completed, which takes a long time.

[0029] like Figures 1 to 8 As shown, a long-handled internal ball cage heat treatment integral inductor includes an inductor body 1, a rotating cylinder 2, and a fixing assembly 3. The inductor body 1 includes a working section 11 and a fixing section 12. The inner cavity shape of the working section 11 is consistent with that of the workpiece. The working section 11 is composed of a copper tube 111 and a magnetic conductor 112. The fixing section 12 has a rotating cavity 121 and a pressing groove 1211. The rotating cylinder 2 is rotatably installed in the rotating cavity 121. The rotating cylinder 2 has a mounting groove 21 that penetrates the rotating cylinder 2. The fixing assembly 3 is provided in the mounting groove 21 and is used to fix the handle end of the workpiece.

[0030] Specifically, the inner cavity shape of the working section 11 of the sensor body 1 is consistent with the workpiece. This consistency prevents the sensor body 1 from gradually moving to scan and heat the workpiece, allowing the sensor body 1 to perform integrated processing of the workpiece, thus improving work efficiency. The sensor body 1 consists of a copper tube 111 and a magnetic conductor 112. The magnetic conductor 112 is fixedly installed at the front end of the copper tube 111. During workpiece quenching, the magnetic conductor 112 is energized, transmitting current to the copper tube 111. The copper tube 111 heats up as a whole, simultaneously quenching the entire rod section. The workpiece first interacts with the rotating... The front end of the mounting groove 21 on the cylinder 2 contacts the workpiece, and the front end of the mounting groove 21 is interference-fitted with the workpiece, so that the rotating cylinder 2 initially fixes and positions the workpiece. When overall quenching is required, the workpiece needs to rotate to ensure the uniformity of its own heating, thereby ensuring the quenching effect of the workpiece. During the rotation of the workpiece, the shank and tail of the workpiece may experience radial movement under rotation, which will reduce the quenching effect. At this time, the fixing component 3 fixes the shank and tail of the workpiece to ensure the stability of the workpiece rotation. At the same time, the front end of the rotating cylinder 2 is fixed to the workpiece, and the workpiece drives the rotating cylinder 2 to rotate synchronously. The rotating cylinder 2 promotes the stability of the fixation according to the rotation speed.

[0031] Preferably, when processing the workpiece, the workpiece needs to be placed on the processing table. The processing table is a conventional technology. A motor is installed on the processing table, and a clamp is installed on the motor to fix one end of the inner ball cage of the long shank of the drive shaft. The clamp fits against the inner wall of the inner ball cage, which can realize the movement of the inner ball cage of the long shank of the drive shaft. An electric push rod 34 is installed below the processing table to push the processing table to slide horizontally, thereby driving the workpiece on the processing table into the sensor body 1. Then the motor is started, and the motor drives the workpiece to rotate through the clamp.

[0032] In this embodiment, the fixing component 3 includes a drive shaft 31, a return spring 32, a turntable 33, a push rod 34, and a fixing block 35. The drive shaft 31 is slidably installed in the mounting groove 21, and a locking groove 311 is provided on the drive shaft 31. A drive block 312 is provided on the drive shaft 31, and the drive shaft 31 is slidably connected to the rotating cylinder 2 through the return spring 32. The turntable 33 is rotatably installed with the rotating cylinder 2. The turntable 33 is provided with a drive groove 331 that cooperates with the drive block 312. An arc-shaped groove 332 is arranged in a ring on the turntable 33. A push rod 34 is slidably installed in the arc-shaped groove 332. A fixing block 35 is installed on the push rod 34. A fixing protrusion is arranged in an array on the fixing block 35.

[0033] Specifically, when the workpiece needs to be quenched, the workpiece is transferred into the sensor body 1. During the movement, the shank of the workpiece gradually presses against the drive shaft 31, causing the drive shaft 31 to slide. The drive shaft 31 pushes the drive groove 331 on the turntable 33 through the drive block 312, thereby driving the turntable 33 to rotate. When the turntable 33 rotates, it pulls the pull rod 24 horizontally through the arc groove 332. The pull rod 24 drives the fixing block 35 to move centripetally to clamp the shank of the ball cage inside the long shank of the transmission shaft. During the clamping process, the fixing protrusion on the fixing block 35 increases the friction between the fixing block 35 and the shank of the workpiece, enhancing the fixing effect on the workpiece.

[0034] Preferably, a shim is provided on the mounting groove 21 of the rotating drum 2, one end of the return spring 32 is connected to the shim and the other end is connected to the drive shaft 31, an annular slider is provided on the turntable 33, and an annular groove is provided on the mounting groove 21 of the rotating drum 2. The turntable 33 and the rotating drum 2 are rotatedly connected through the annular slider and the annular groove.

[0035] In this embodiment, two centrifugal springs 22 are symmetrically installed on the rotating drum 2. One end of the centrifugal spring 22 is installed in the mounting groove 21, and the other end of the centrifugal spring 22 is fixedly connected to the centrifugal block 23. The centrifugal block 23 is located in the extrusion groove 1211.

[0036] Specifically, depending on the current applied, the heating temperature of the copper tube 111 varies, and the rotation speed of the workpiece also varies. When the workpiece rotation speed increases, the rotation speed of the rotating drum 2 increases synchronously. The rotating drum 2 generates centrifugal force when rotating, which is transmitted to the centrifugal spring 22, driving the centrifugal spring 22 to extend. The centrifugal spring 22 pushes the centrifugal block 23 to slide, and the centrifugal block 23 contacts the inner wall of the extrusion groove 1211 on the fixed section 12. As the rotation speed increases, the force between the centrifugal block 23 and the inner wall of the extrusion groove 1211 increases, the force between the rotating drum 2 and the fixed section 12 increases, and the rotation of the rotating drum 2 becomes more stable. This ensures the stability of the fixed component 3 installed on the rotating drum 2 in fixing the workpiece, and avoids the rotating disc 33 from sliding due to unstable rotation, which would cause the workpiece to shake.

[0037] Preferably, the two centrifugal plates are fixedly mounted with pull rods 24, the pull rods 24 are located inside the centrifugal springs 22, the pull rods 24 are provided with pressing blocks 241, and a locking block 25 is provided on one side of the pull rods 24. One end of the locking block 25 is provided with an inclined groove 251 that cooperates with the pressing block 241, and the locking block 25 is directly opposite the locking groove 311.

[0038] Specifically, when the centrifugal plate slides outwards under the action of centrifugal force, the centrifugal plate drives the pull rod 24 to slide synchronously. The pull rod 24 pushes the inclined groove 251 of the locking block 25 through the pressing block 241 on it, driving the locking block 25 to slide horizontally. The locking block 25 slides into the locking groove 311 opened on the drive block 312, thereby fixing the drive block 312 through the locking block 25, ensuring the stability of the drive block 312 under high-speed rotation, thereby ensuring the stability of the fixing block 35, and thus ensuring the fixing effect of the fixing block 35 on the workpiece handle tail;

[0039] Preferably, the locking block 25 is located inside the inner diameter of the return spring 32, so that the locking block 25 can pass through the return spring 32 and smoothly enter the locking groove 311.

[0040] In this embodiment, the locking groove 311 is a wedge-shaped structure 3111, and the other ends of the two locking blocks 25 form a wedge-shaped structure 3111 that cooperates with the locking groove 311. The locking block 25 is provided with a slider that is slidably connected to the mounting groove 21.

[0041] Specifically, the wedge structure 3111 has the effect of gradually increasing friction. As the rotation speed increases, the centrifugal force generated is greater, the displacement distance of the pull plate increases, and thus the sliding distance of the locking block 25 increases. This increases the length of the locking block 25 entering the locking groove 311, thereby enhancing the fixing effect of the locking block 25 on the drive shaft 31. This achieves the unity of workpiece processing rotation speed and fixing effect. The locking block 25 is tightly connected to the mounting groove 21 through the slider, thereby achieving its own sliding stability.

[0042] In this embodiment, the fixing segment 12 is an insulator, and the fixing segment 12 can be made of rubber, glass, or ceramic.

[0043] Specifically, the fixed section 12 is an insulator used to isolate the transmission of current, thereby preventing the fixed section 12 from heating up and affecting the quenching effect on the workpiece.

[0044] Rubber: such as natural rubber and synthetic rubber;

[0045] Glass: such as ordinary glass and quartz glass;

[0046] Ceramics: such as alumina ceramics and aluminum nitride ceramics.

[0047] In use, the workpiece is mounted on the processing table, and then the processing table is pushed by the electric push rod 34 so that the workpiece gradually enters the inductor body 1. During the movement, the tail of the workpiece gradually squeezes the drive shaft 31, causing the drive shaft 31 to slide. The drive shaft 31 pushes the drive groove 331 on the turntable 33 through the drive block 312 on it, thereby driving the turntable 33 to rotate. When the turntable 33 rotates, it pulls the pull rod 24 horizontally through the arc groove 332. The pull rod 24 drives the fixing block 35 to move centripetally to clamp the tail of the long-handled inner ball cage of the drive shaft.

[0048] Then the processing table starts to drive the workpiece to rotate. During the rotation of the workpiece, the rotating drum 2 rotates synchronously. When the rotating drum 2 rotates, it generates centrifugal force. The centrifugal force is transmitted to the centrifugal spring 22, which drives the centrifugal spring 22 to extend. The centrifugal spring 22 pushes the centrifugal block 23 to slide. The centrifugal block 23 contacts the inner wall of the extrusion groove 1211 on the fixed section 12. At the same time, the centrifugal plate drives the pull rod 24 to slide synchronously. The pull rod 24 pushes the inclined groove 251 of the locking block 25 through the extrusion block 241 on it, which drives the locking block 25 to slide horizontally. The locking block 25 slides into the locking groove 311 opened on the driving block 312, and then the driving block 312 is fixed by the locking block 25.

[0049] After processing is completed, the electric push rod 34 drives the processing table to reset, the processing table moves the workpiece, the force of the workpiece on the drive shaft 31 decreases, the drive shaft 31 resets under the action of the reset spring 32, the drive shaft 31 drives the turntable 33 to reverse and reset, the turntable 33 pushes the pull rod 24 to reset, the pull rod 24 drives the fixing block 35 to reset, and the fixation on the workpiece is released.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A long-handled, inner ball cage heat treatment integral inductor, characterized in that: It includes a sensor body (1), a rotating drum (2), and a fixing assembly (3); The sensor body (1) includes a working section (11) and a fixed section (12). The inner cavity shape of the working section (11) is consistent with that of the workpiece. The working section (11) is composed of a copper tube (111) and a magnetic conductor (112). A rotating cavity (121) is provided on the fixed section (12). An extrusion groove (1211) is provided on the rotating cavity (121). A rotating cylinder (2) is rotatably installed in the rotating cavity (121). The rotating drum (2) has an installation groove (21) that extends through the rotating drum (2). A fixing component (3) is provided inside the installation groove (21) to fix the handle end of the workpiece.

2. The integrated sensor according to claim 1, characterized in that: The fixing component (3) includes a drive shaft (31), a return spring (32), a turntable (33), a push rod (34), and a fixing block (35). The drive shaft (31) is slidably installed in the mounting groove (21), the drive shaft (31) is provided with a locking groove (311), the drive shaft (31) is provided with a drive block (312), and the drive shaft (31) is slidably connected to the rotating drum (2) through a return spring (32); The turntable (33) is rotatably mounted to the rotating cylinder (2). The turntable (33) is provided with a drive groove (331) that cooperates with the drive block (312). The turntable (33) has an arc-shaped groove (332) arranged in a ring. A push rod (34) is slidably mounted in the arc-shaped groove (332). A fixing block (35) is installed on the push rod (34); The fixing block (35) has a series of fixing protrusions.

3. The integrated sensor according to claim 2, characterized in that: Two centrifugal springs (22) are symmetrically installed on the rotating drum (2). One end of the centrifugal spring (22) is installed in the mounting groove (21), and the other end of the centrifugal spring (22) is fixedly connected to the centrifugal block (23). The centrifugal block (23) is located in the extrusion groove (1211).

4. The integrated sensor according to claim 3, characterized in that: A pull rod (24) is fixedly installed on the two centrifugal blocks (23). The pull rod (24) is located inside the centrifugal spring (22). A pressing block (241) is provided on the pull rod (24). A locking block (25) is provided on one side of the pull rod (24). A slanted groove (251) that cooperates with the pressing block (241) is opened on one end of the locking block (25). The locking block (25) is directly opposite the locking groove (311).

5. The integrated sensor according to claim 4, characterized in that: The locking groove (311) is a wedge-shaped structure (3111), and the other ends of the two locking blocks (25) form a wedge-shaped structure (3111) that cooperates with the locking groove (311). The locking block (25) is provided with a slider that is slidably connected to the mounting groove (21).

6. The integrated sensor according to claim 1, characterized in that: The fixing section (12) is an insulator, and the fixing section (12) may be made of rubber, glass and ceramic.

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