Spline shaft part surface quenching device

Abstract

The utility model relates to the technical field of spline shaft quenching devices, in particular to a spline shaft part surface quenching device which comprises a heart-shaped clamp, a first movable center, a movable block, a driving motor, a transmission device and a second movable center, and the movable block moves, so that the distance between the first movable center and the second movable center is changed; and then the transmission shaft and the spline shaft are fixed through the heart-shaped clamp, the driving motor drives the transmission shaft to rotate through the transmission device, then the heart-shaped clamp is used for enabling the spline shaft to rotate, it is guaranteed that the heating temperature of the quenching surface is uniform, and it is guaranteed that spline shaft parts are evenly heated.

Description

Technical Field

[0001] This utility model relates to the technical field of spline shaft quenching device, and in particular to a surface quenching device for spline shaft parts. Background Technology

[0002] As a key component of the transmission system, the spline shaft has spline teeth at both its head and tail, and center holes at both ends. The spline surface design requires surface hardening to improve the surface hardness of the spline teeth and extend the service life of the spline shaft. Traditional hardening methods have the following problems: 1) Manual operation or fixed equipment leads to uneven heating and inconsistent hardened layer depth; 2) Different specifications of spline shafts (such as length and tooth profile) require frequent equipment adjustments, resulting in low efficiency. Existing technologies struggle to achieve uniform heating and efficient adaptation. Therefore, there is an urgent need for a surface hardening device for spline shaft parts, suitable for different lengths of spline shafts, ensuring uniform heating of the hardened surface to guarantee uniform heating of spline shaft parts. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a surface quenching device for spline shaft parts, which is suitable for the length of spline shafts of different specifications, and ensures that the quenching surface is heated evenly, so as to ensure that the spline shaft parts are heated evenly.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a surface quenching device for spline shaft parts, comprising:

[0005] frame;

[0006] Mounting plate, the mounting plate is attached to the frame;

[0007] The drive shaft is rotatably connected to the lower part of the mounting plate. The drive shaft has a blind hole inside and two symmetrical first threaded holes on its outer wall.

[0008] A fixing device, comprising a spring and a first movable tip, the first movable tip comprising a first cylinder and a first cone;

[0009] In the assembled state, one end of the spring abuts against the inner wall of the blind hole, the first cylinder abuts against the other end of the spring, the bolt engages with the first threaded hole, so that the bolt is pressed against the outer wall of the first cylinder, and the first cone is located outside the blind hole;

[0010] The drive motor is connected to the lower part of the other end of the mounting plate;

[0011] The transmission device connects the drive motor to the transmission shaft via the transmission device.

[0012] A movable block is movably connected to the mounting plate in a vertical direction. The movable block is provided with a second movable center, which includes a second cylinder and a second cone. The second movable center is coaxial with the first movable center.

[0013] The drive mechanism drives the moving block to move;

[0014] The heart-shaped clamp includes a ring, an arc-shaped connecting rod, and a nut. The outer wall of the ring has a second threaded hole. One end of the arc-shaped connecting rod is connected to the outer wall of the ring, and the nut is connected to the other end of the arc-shaped connecting rod. The ring is directly fitted onto the outer wall of the drive shaft, and two bolts are matched with the second threaded hole to tighten against the outer wall of the drive shaft and fix it.

[0015] The moving bolt has a cone-shaped front end. The moving bolt is connected to the nut so that the front end of the moving bolt is inserted into the spline groove of the spline shaft.

[0016] Furthermore, the transmission device includes a first pulley, a second pulley, and a synchronous belt. The first pulley is connected to the output shaft of the drive motor, the second pulley is connected to the output shaft of the transmission shaft, and the first pulley is connected to the second pulley via the synchronous belt.

[0017] Furthermore, the drive mechanism includes a first sliding shaft, a first sliding sleeve, a second sliding shaft, and a second sliding sleeve. The first sliding shaft is connected to the frame, and the conveying direction of the first sliding shaft is vertical. The second sliding shaft is parallel to the first sliding shaft. The first sliding sleeve is slidably connected to the first sliding shaft, and the second sliding sleeve is slidably connected to the second sliding shaft. The outer walls of the first sliding sleeve and the second sliding sleeve are each provided with a third threaded hole. The moving block is connected to the first sliding sleeve and the second sliding sleeve.

[0018] Furthermore, the second activity involves welding the top of the moving block.

[0019] Furthermore, the surface hardening device for spline shaft parts also includes a protective cover. The protective cover is used to protect the transmission device for safety and dust prevention. The protective cover includes a front sealing plate, a side sealing plate, an upper sealing plate, a rear sealing plate, and a locking block. The front sealing plate is semi-arc-shaped, and the rear sealing plate is a rectangular plate. One end of the two side sealing plates is connected to the front sealing plate, and the other end of the two side sealing plates is connected to the rear sealing plate. The locking block includes a first connecting block and a fourth threaded hole. The fourth threaded hole is provided on the first connecting block. The upper ends of the front sealing plate and the side sealing plates are welded to the first connecting block. The upper sealing plate is provided with a second connecting block that matches the first connecting block. The second connecting block is provided with a through hole that matches the fourth threaded hole.

[0020] The beneficial effects of this utility model are as follows: Compared with the prior art, by setting up a chicken-heart clamp, a first movable center, a moving block, a drive motor, a transmission device, and a second movable center, and by using the movement of the moving block, the distance between the first movable center and the second movable center changes, thus making it suitable for spline shafts of different specifications. Then, the chicken-heart clamp fixes the transmission shaft to the spline shaft, and the drive motor drives the transmission shaft to rotate through the transmission device. In turn, the chicken-heart clamp makes the spline shaft rotate, ensuring that the quenching surface heating temperature is uniform, thus ensuring that spline shaft parts are heated evenly. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a splined shaft component;

[0022] Figure 2 This is a schematic diagram of the surface quenching device for spline shaft parts according to a specific embodiment of the present invention;

[0023] Figure 3 This is a structural view of a surface quenching device for spline shaft parts according to a specific embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of the heart-shaped clip component;

[0025] Figure 5 This is a top view of the heart-shaped clip component.

[0026] Label Explanation

[0027] 1. Rack;

[0028] 2. Mounting plate;

[0029] 3. Drive shaft; 31. Blind hole; 32. First threaded hole;

[0030] 4. Fixing device; 41. Spring; 42. First movable center; 421. First cylinder; 422. First cone;

[0031] 5. Drive motor;

[0032] 6. Transmission device; 61. First pulley; 62. Second pulley; 63. Synchronous belt;

[0033] 7. Moving block; 71. Second movable tip; 711. Second cylinder; 712. Second cone;

[0034] 8. Drive mechanism; 81. First sliding shaft; 82. First sliding sleeve; 83. Second sliding shaft; 84. Second sliding sleeve; 85. Third threaded hole;

[0035] 9. Heart-shaped clamp; 91. Ring; 911. Second threaded hole; 92. Arc-shaped connecting rod; 93. Nut;

[0036] 10. Loosen the bolts;

[0037] 11. Protective cover; 111. Front sealing plate; 112. Side sealing plate; 113. Top sealing plate; 1131. Second connecting block; 1132. Through hole; 114. Rear sealing plate; 115. Locking block; 1151. First connecting block; 1152. Fourth threaded hole;

[0038] 12. Spline shaft; 121. Spline teeth; 122. Center hole. Detailed Implementation

[0039] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0040] Please refer to Figures 1 to 5 A surface hardening device for splined shaft parts, comprising:

[0041] Rack 1;

[0042] Mounting plate 2 is connected to frame 1;

[0043] The drive shaft 3 is rotatably connected to the lower part of the mounting plate 2. The drive shaft 3 has a blind hole 31 inside and two symmetrical first threaded holes 32 on the outer wall of the drive shaft 3.

[0044] Fixing device 4, which includes spring 41 and first movable tip 42, the first movable tip 42 includes first cylinder 421 and first cone 422;

[0045] In the assembled state, one end of the spring 41 abuts against the inner wall of the blind hole 31, the first cylinder 421 abuts against the other end of the spring 41, the bolt engages with the first threaded hole 32, so that the bolt is pressed against the outer wall of the first cylinder 421, and the first cone 422 is located outside the blind hole 31.

[0046] Drive motor 5 is connected to the lower part of the other end of mounting plate 2;

[0047] The transmission device 6 and the drive motor 5 are connected to the transmission shaft 3 through the transmission device 6.

[0048] The movable block 7 is movably connected to the mounting plate 2 in the vertical direction. The movable block 7 is provided with a second movable tip 71, which includes a second cylinder 711 and a second cone 712. The second movable tip 71 is coaxial with the first movable tip 42.

[0049] Drive mechanism 8 drives moving block 7 to move;

[0050] The heart-shaped clamp 9 includes a ring 91, an arc-shaped connecting rod 92, and a nut 93. The outer wall of the ring 91 is provided with a second threaded hole 911. One end of the arc-shaped connecting rod 92 is connected to the outer wall of the ring 91, and the nut 93 is connected to the other end of the arc-shaped connecting rod 92. The ring 91 is directly fitted onto the outer wall of the drive shaft 3, and two bolts are matched with the second threaded hole 911 to tighten against the outer wall of the drive shaft 3 and fix it.

[0051] The moving bolt 10 has a cone-shaped front end. The moving bolt 10 is connected to the nut 93 so that the front end of the moving bolt 10 is inserted into the spline tooth 121 groove of the spline shaft 12.

[0052] In the above embodiments, the blind hole 31 is used to install the spring 41 and the first movable tip 42. The spring 41 is first installed into the hole, and then the first movable tip 42 is installed. After being installed into the hole of the drive shaft 3, bolts are installed on the two first threaded holes 32 respectively, so that the bolts are tightened against the outer wall of the first cylinder 421. In this way, the first movable tip 42 and the spring 41 will not fall out of the drive shaft 3. Then, the tip hole 122 at one end of the spline shaft 12 is matched with the first cone 422 of the first movable tip 42. The drive mechanism 8 drives the moving block 7 to move, so that the tip hole 122 at the other end of the spline shaft 12 is matched with the second cone 712 of the second movable tip 71, thereby fixing the spline shaft 12 between the first movable tip 42 and the second movable tip 71. The tips at both ends of the spline shaft 12 cannot be completely locked. The blind hole 31 needs to leave space for the thermal expansion and contraction of the spline shaft 12 when heated. Then, the ring 91 of the heart clip 9 is put into the drive shaft. On the outer wall of 3, the front end of the tug bolt 10 is inserted into the spline tooth 121 groove of the spline shaft 12 by matching the tug bolt 10 with the nut 93. Then, the drive motor 5 is turned on. The drive motor 5 drives the drive shaft 3 to rotate through the transmission device 6. Thus, the drive shaft 3 drives the spline shaft 12 to rotate through the chuck 9. Compared with the prior art, by setting the chuck 9, the first movable tip 42, the moving block 7, the drive motor 5, the transmission device 6 and the second movable tip 71, and by moving the moving block 7, the distance between the first movable tip 42 and the second movable tip 71 changes, thus making it suitable for different specifications of spline shaft 12 length. Then, the drive shaft 3 and the spline shaft 12 are fixed by the chuck 9. The drive motor 5 drives the drive shaft 3 to rotate through the transmission device 6, and then the spline shaft 12 is rotated by the chuck 9, ensuring that the quenching surface heating temperature is uniform, so as to ensure that the spline shaft 12 and other parts are heated evenly.

[0053] As an optional implementation, the transmission device 6 includes a first pulley 61, a second pulley 62, and a synchronous belt 63. The first pulley 61 is connected to the output shaft of the drive motor 5, and the second pulley 62 is connected to the output shaft of the transmission shaft 3. The first pulley 61 is connected to the second pulley 62 via the synchronous belt 63.

[0054] In the above embodiments, the synchronous belt 63 drives the drive motor 5 to rotate the transmission shaft 3, thereby ensuring the rotation of the spline shaft 12 and ensuring uniform heating during quenching of the spline shaft 12.

[0055] As an optional implementation, the drive mechanism 8 includes a first sliding shaft 81, a first sliding sleeve 82, a second sliding shaft 83, and a second sliding sleeve 84. The first sliding shaft 81 is connected to the frame 1, and the conveying direction of the first sliding shaft 81 is vertical. The second sliding shaft 83 is parallel to the first sliding shaft 81. The first sliding sleeve 82 is slidably connected to the first sliding shaft 81, and the second sliding sleeve 84 is slidably connected to the second sliding shaft 83. The outer walls of the first sliding sleeve 82 and the second sliding sleeve 84 are each provided with a third threaded hole 85. The moving block 7 is connected to the first sliding sleeve 82 and the second sliding sleeve 84.

[0056] In the above embodiments, after the movable block 7 is welded as a whole, the first sliding sleeve 82 and the second sliding sleeve 84 of the movable block 7 are respectively fitted onto the first sliding shaft 81 and the second sliding shaft 83 before the first sliding shaft 81 and the second sliding shaft 83 can be welded and fixed. At the same time, it is ensured that the movable block 7 can move up and down. By designing a third threaded hole 85 on the first sliding sleeve and the sliding sleeve respectively, and using bolts to tighten the first sliding shaft 81 and the second sliding shaft 83, it is ensured that the movable block 7 does not move down.

[0057] As an alternative implementation, the second active tip 71 is welded onto the moving block 7.

[0058] As an optional implementation, the surface hardening device for spline shaft type 12 parts also includes a protective cover 11. The protective cover 11 is used to protect the transmission device 6 for safety and dust prevention. The protective cover 11 includes a front sealing plate 111, side sealing plates 112, an upper sealing plate 113, a rear sealing plate 114, and a locking block 115. The front sealing plate 111 is semi-arc-shaped, and the rear sealing plate 114 is a rectangular plate. One end of the two side sealing plates 112 is connected to the front sealing plate 111, and the other end of the two side sealing plates 112 is connected to the front sealing plate 111. Connected to the rear sealing plate 114, the locking block 115 includes a first connecting block 1151 and a fourth threaded hole 1152. The fourth threaded hole 1152 is disposed on the first connecting block 1151. The first connecting block 1151 is welded to the upper ends of the front sealing plate 111 and the side sealing plate 112. The upper sealing plate 113 is provided with a second connecting block 1131 that matches the first connecting block 1151. The second connecting block 1131 is provided with a through hole 1132 that matches the fourth threaded hole 1152.

[0059] In the above embodiments, the transmission device 6 is locked inside the protective cover 11 by passing screws through the through hole 1132 and the fourth threaded hole 1152 in sequence and locking them with the nut 93, thereby preventing dust from entering and protecting the transmission stability of the transmission device 6.

[0060] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A splined shaft type part surface quenching device characterized by, The surface quenching device for spline shaft parts comprises a rack, a mounting plate connected to the rack, a transmission shaft rotatably connected to the lower part of the mounting plate, a blind hole arranged in the transmission shaft, two symmetrical first threaded holes arranged on the outer wall of the transmission shaft, a fixing device, a driving motor, a transmission device, a moving block, a driving mechanism, a center clamping device, and a spline shaft. The fixing device comprises a spring and a first movable center, and the first movable center comprises a first cylinder and a first cone. In the assembled state, one end of the spring abuts against the inner wall of the blind hole, the first cylinder abuts against the other end of the spring, the bolt is matched with the first threaded hole, the outer wall of the first cylinder is tightly pressed by the bolt, and the first cone is located outside the blind hole. The driving motor is connected to the other end of the mounting plate. The transmission device is arranged between the driving motor and the transmission shaft. The moving block is movably connected to the mounting plate in the vertical direction, and a second movable center is arranged on the moving block. The second movable center comprises a second cylinder and a second cone, and is coaxial with the first movable center. The driving mechanism drives the moving block to move. The center clamping device comprises a circular ring, an arc-shaped connecting rod, and a nut. The outer wall of the circular ring is provided with a second threaded hole. One end of the arc-shaped connecting rod is connected to the outer wall of the circular ring. The nut is connected to the other end of the arc-shaped connecting rod.

2. The device for surface quenching of a spline shaft part according to claim 1, wherein The circular ring is directly sleeved on the outer wall of the transmission shaft.

3. The device for surface quenching of a spline shaft part according to claim 1, wherein Two bolts are matched with the second threaded hole to tightly press the outer wall of the transmission shaft and fix it.

4. The device for surface quenching of a spline shaft part according to claim 1, wherein The front end of the driving bolt is a cone.

5. The device for surface quenching of a spline shaft part according to claim 1, wherein The driving bolt is matched and connected with the nut, so that the front end of the driving bolt is inserted into the spline tooth groove of the spline shaft. The transmission device comprises a first pulley, a second pulley, and a synchronous belt. The first pulley is in transmission connection with the output shaft of the driving motor. The second pulley is in transmission connection with the output shaft of the transmission shaft. The first pulley is in transmission connection with the second pulley through the synchronous belt. The driving mechanism comprises a first sliding shaft, a first sliding sleeve, a second sliding shaft, and a second sliding sleeve. The first sliding shaft is connected to the rack. The conveying direction of the first sliding shaft is vertical. The second sliding shaft is parallel to the first sliding shaft. The first sliding sleeve and the second sliding sleeve are in sliding connection with the first sliding shaft and the second sliding shaft, respectively. The outer walls of the first sliding sleeve and the second sliding sleeve are provided with third threaded holes. The moving block is connected with the first sliding sleeve and the second sliding sleeve. The second movable center is welded to the moving block. The surface quenching device for spline shaft parts further comprises a protective cover. The protective cover is used for protecting the safety and dust prevention of the transmission device. The protective cover comprises a front sealing plate, side sealing plates, an upper sealing plate, a rear sealing plate, and a locking block. The front sealing plate is semicircular. The rear sealing plate is a rectangular plate. One end of each of the two side sealing plates is connected to the front sealing plate. The other end of each of the two side sealing plates is connected to the rear sealing plate. The locking block comprises a first connecting block and a fourth threaded hole. The fourth threaded hole is arranged on the first connecting block. The first connecting block is welded to the upper ends of the front sealing plate and the side sealing plates. The upper sealing plate is provided with a second connecting block matched with the first connecting block. The second connecting block is provided with a through hole matched with the fourth threaded hole.

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