A turning machine for turning axle forks

Abstract

This invention relates to a lathe for external cylindrical machining of a forklift shaft, belonging to the field of transmission shaft component processing. It includes a frame, a headstock mounted on the frame, a slide rail on the top of the frame, a fixing device for fixing the fork lugs on the headstock, and a lifting mechanism slidably connected to the frame to abut the shaft against the fixing device. The fixing device includes a positioning cylinder mounted on the output shaft of the headstock, with symmetrically fixed locking pins on the outer walls of the positioning cylinder for engaging with the opposite outer walls of the fork lugs. The lifting mechanism includes a sliding seat slidably connected to the slide rail, with a ejector pin mounted on the sliding seat, and a driving assembly for driving the sliding seat to slide on the frame. This invention facilitates the positioning of the fork shaft.

Description

Technical Field

[0001] This invention relates to the field of drive shaft machining, and in particular to a lathe for turning the outer diameter of a forklift shaft. Background Technology

[0002] The shaft fork is an important component in the drive shaft three-way assembly, consisting of a shaft and two forks. During the manufacturing process of its finished product, it needs to be clamped and positioned.

[0003] When machining axle forks, the forks need to be mounted on different lathes for cutting, drilling, and grooving. During machining, the outer diameter of the axle body needs to be turned on its outer side wall, ensuring the axle body is axially horizontal. The axle body and fork lugs need to be fixed. However, the irregular shape of the fork lugs makes positioning the axle body difficult. Therefore, designing a lathe for positioning the axle fork to facilitate rough machining of the axle body is a problem that urgently needs to be solved. Summary of the Invention

[0004] To facilitate the positioning of the fork shaft, this invention provides a lathe for the outer diameter of a fork shaft vehicle.

[0005] The present invention provides a lathe for turning the outer diameter of a forklift using the following technical solution:

[0006] A lathe for turning the outer diameter of a forklift includes a frame, a headstock mounted on the frame, a slide rail on the top of the frame, a fixing device for fixing the fork lugs mounted on the headstock, and a lifting mechanism slidably connected to the frame to abut the shaft against the fixing device. The fixing device includes a positioning cylinder mounted on the output shaft of the headstock, and snap-fit ​​pins symmetrically fixed to the outer side wall of the positioning cylinder for snapping against the opposite outer side wall of the fork lugs. The lifting mechanism includes a sliding seat slidably connected to the slide rail, a ejector pin mounted on the sliding seat, and a drive assembly for driving the sliding seat to slide on the frame.

[0007] By adopting the above technical solution, when positioning the shaft fork, the fork lug is engaged with the output shaft of the spindle box, and the drive assembly drives the sliding seat to move towards the spindle box, so that the ejector pin is pressed against the end of the shaft fork, the locking pin is locked against both sides of the fork lug, and the ejector pin presses against the end of the shaft fork, which can facilitate fixing the shaft fork.

[0008] Optionally, the drive assembly includes a lead screw threaded to a sliding seat, the lead screw being horizontally axially positioned and rotatably connected to the top of the frame, a motor being fixedly connected to the top of the frame, and the output shaft of the motor being fixed to the lead screw.

[0009] By adopting the above technical solution, the fork lug of the shaft fork is fixed on the output shaft of the main spindle box, and the motor drives the lead screw to rotate, so that the sliding seat moves towards the main spindle box, making it easier for the ejector pin to press against the end of the shaft fork.

[0010] Optionally, two guide ribs are fixedly connected to the output shaft of the spindle box, and a guide groove is provided on the inner wall of the positioning cylinder for the guide ribs to be inserted. The guide cylinder is threaded with bolts to fix the positioning cylinder.

[0011] By adopting the above technical solution, the locking pin and the ejector pin work together to lock the shaft fork, and the positioning cylinder slides along the output shaft of the main spindle box, which can adjust the position of the locking pin and limit the shaft fork of different sizes.

[0012] Optionally, a fixed cylinder is sleeved on the output shaft of the spindle box, and a support plate is symmetrically fixedly connected to the outer wall of the fixed cylinder. A first clamping plate is fixedly connected to the side of the support plate near the fixed cylinder, and a second clamping plate is provided on the side of the support plate away from the fixed cylinder. A groove for inserting the fork lug is formed between the first clamping plate and the second clamping plate, and a bolt for fixing the fork lug in the groove is threaded on the second clamping plate.

[0013] By adopting the above technical solution, the fork lug is inserted into the slot. After the ejector pin tightens the fork lug, the fork lug is then fixed in the slot between the first and second slots by bolts, which can completely fix the shaft fork. The bolts fix the fork lug to the first and second slots, which can fix the shaft fork a second time and prevent the shaft fork from being thrown out during the rotation of the spindle box.

[0014] Optionally, the first clamping plate has a threaded hole, and the second clamping plate has a through hole for the bolt to pass through. The bolt passes through the through hole of the second clamping plate and the ear hole of the fork, and then is threadedly connected to the threaded hole of the first clamping plate.

[0015] By adopting the above technical solution, the bolt passes through the through hole of the second clamping plate and the ear hole of the fork ear, and then is threadedly connected to the threaded hole of the first clamping plate, which can fix the fork ear in the clamping groove and achieve the fixation of the clamping groove.

[0016] Optionally, the support plate has a T-shaped groove along its length, and a T-shaped slider is fixedly connected to the end of the second clamping plate. The T-shaped slider is slidably connected in the T-shaped groove, and bolts are threaded on the second clamping plate to fix the second clamping plate and the support plate.

[0017] By adopting the above technical solution, the second card plate can slide along the support plate, which makes it easy to adjust the distance between the second card plate and the first card plate, and thus make it easy to adjust the size of the card slot to accommodate fork ears of different sizes.

[0018] Optionally, the inner wall of the fixed cylinder is symmetrically provided with sliding grooves for the guide ridge to be inserted. The fixed cylinder is threaded with bolts for fixing the fixed cylinder and the output shaft of the main spindle box.

[0019] By adopting the above technical solution, the fixed cylinder slides along the output shaft of the spindle box, which can adjust the position of the slot, thereby facilitating the adjustment of the position of the fixed cylinder to adapt to shaft forks of different sizes, and can be positioned for shaft forks of different sizes.

[0020] Optionally, the output shaft of the spindle box has a receiving cavity at one end away from the spindle box. A return spring is fixedly connected to the inner wall of the receiving cavity. The return spring is horizontally arranged, with one end fixedly connected to the inner wall of the receiving cavity and the other end fixedly connected to an abutment post. The end of the abutment post extends out of the receiving cavity and is used to elastically press against the inner wall of the shaft fork.

[0021] By adopting the above technical solution, when positioning the shaft fork, the ejector pin presses the shaft fork against the output shaft of the spindle box, and the abutment column compresses the return spring. After the shaft fork is processed, the pressure of the ejector pin disappears, and the tension of the return spring facilitates the shaft fork to disengage from the output shaft of the spindle box.

[0022] In summary, the present invention has at least one of the following beneficial technical effects:

[0023] 1. A positioning cylinder is mounted on the output shaft of the main spindle box. A locking pin is symmetrically fixed to the outer wall of the positioning cylinder, and the locking pin is used to lock onto the outer wall opposite to the fork lug. The ejector mechanism includes a sliding seat slidably connected to a slide rail. A pin is mounted on the sliding seat, and a lead screw is threaded onto the sliding seat. The lead screw is axially horizontally positioned and rotatably connected to the top of the frame. A motor is fixedly connected to the top of the frame, and the output shaft of the motor is fixed to the lead screw. When positioning the fork, the fork lug is locked onto the output shaft of the main spindle box. The motor drives the lead screw to rotate, causing the sliding seat to move towards the main spindle box, facilitating the pin to press against the end of the fork. Driving the sliding seat towards the main spindle box causes the locking pin to lock onto both sides of the fork lug. The pin presses against the end of the fork, thus facilitating the fixing of the fork.

[0024] 2. A fixed cylinder is fitted onto the output shaft of the spindle box. Support plates are symmetrically fixed to the outer wall of the fixed cylinder. A first clamping plate is fixed to the side of the support plate near the fixed cylinder, and a second clamping plate is set on the side of the support plate away from the fixed cylinder. A groove for inserting the fork lug is formed between the first clamping plate and the second clamping plate. A bolt is threaded onto the second clamping plate to fix the fork lug in the groove. After the ejector pin tightens the fork lug, the bolt is used to fix the fork lug in the groove between the first clamping plate and the second clamping plate, which can completely fix the shaft fork. The bolt fixes the fork lug to the first clamping plate and the second clamping plate, which can provide secondary fixation for the shaft fork and prevent the shaft fork from being thrown out during the rotation of the spindle box.

[0025] 3. A receiving cavity is provided at the end of the output shaft of the spindle box away from the spindle box. A return spring is fixedly connected to the inner wall of the receiving cavity. The return spring is horizontally set. One end of the return spring is fixedly connected to the inner wall of the receiving cavity, and the other end is fixedly connected to an abutment post. The end of the abutment post extends out of the receiving cavity. The abutment post is used to elastically press against the inner wall of the shaft fork. When positioning the shaft fork, the ejector pin presses the shaft fork and the output shaft of the spindle box together. The abutment post compresses the return spring. After the shaft fork is processed, the pressure of the ejector pin disappears, and the tension of the return spring facilitates the shaft fork to disengage from the output shaft of the spindle box. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0027] Figure 2 It is a cross-sectional view of the clamping device and the shaft fork.

[0028] Figure 3 This is a structural diagram designed to highlight the snap-fit ​​post and the shaft fork.

[0029] Figure 4 This is a structural diagram designed to highlight the slot and the shaft fork.

[0030] Figure 5 This is an exploded view of the fixed cylinder.

[0031] Figure 6 yes Figure 2 Enlarged view of part A.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Cutter head holder; 12. Cutter head; 13. Slide rail; 14. Spindle box; 2. Clamping device; 21. Output shaft of spindle box; 211. Guide ridge; 212. Receiving cavity; 213. Return spring; 214. Abutment post; 22. Positioning cylinder; 221. Guide groove; 222. Snap-fit ​​post; 23. Fixed cylinder; 231. Sliding groove; 24. Support plate; 241. T-shaped sliding groove; 25. Clamping plate one; 251. Threaded hole; 26. Clamping plate two; 261. T-shaped slider; 262. Through hole; 27. Slot; 3. Ejector mechanism; 31. Sliding seat; 32. Ejector pin; 33. Lead screw; 34. Motor; 4. Shaft fork. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0034] This invention discloses a lathe for turning the outer diameter of a forklift shaft. (Refer to...) Figure 1A lathe for turning the outer diameter of a forklift includes a frame 1, a spindle box 14 at one end of the frame 1, a clamping device 2 for fixing the fork lugs on the spindle box 14, and a top-loading mechanism 3 slidably connected to the top of the frame 1. The top-loading mechanism 3 is used to cooperate with the clamping device 2 to fix the forklift. A cutter head holder 11 is provided on the frame 1, and the cutter head holder 11 is provided with a cutter head 12 for turning the outer diameter of the forklift. The clamping device 2 fixes the fork lugs, the top-loading mechanism 3 fixes the forklift and the top-loading mechanism 3, and the cutter head 12 turns the outer diameter of the outer wall of the shaft.

[0035] Two horizontally arranged slide rails 13 are fixedly connected to the top of the frame 1. The feeding mechanism 3 includes a sliding seat 31 that is slidably connected to the slide rails 13. A pin 32 is provided on the top of the sliding seat 31. The pin 32 is rotatably connected to the sliding seat 31. The pin 32 is used to abut against the end of the shaft. A lead screw 33 is threadedly connected to the bottom of the sliding seat 31. The lead screw 33 is axially arranged horizontally and rotatably connected to the top of the frame 1. A motor 34 is fixedly connected to the top of the frame 1. The output shaft of the motor 34 is fixed to the lead screw 33. The fork lug of the shaft fork is fixed to the output shaft 21 of the spindle box. The motor 34 drives the lead screw 33 to rotate, so that the sliding seat 31 moves towards the spindle box 14, so that the pin 32 abuts against the end of the shaft fork 4.

[0036] Reference Figure 2 and Figure 3 The clamping device 2 includes a positioning cylinder 22 mounted on the output shaft 21 of the spindle box. The positioning cylinder 22 is slidably connected to the output shaft 21 of the spindle box. Two guide ribs 211 are fixedly connected to the output shaft 21 of the spindle box. The guide ribs 211 are arranged axially along the output shaft 21 of the spindle box and are symmetrically arranged on the output shaft 21 of the spindle box. Guide grooves 221 are symmetrically opened on the inner wall of the positioning cylinder 22 for the guide ribs 211 to be inserted into. The guide cylinder is threaded with... The positioning cylinder 22 is fixed with bolts; the two symmetrical sides of the outer wall of the positioning cylinder 22 are fixedly connected with locking pins 222, which are used to lock onto the two side walls opposite to the fork lugs; when the ejector pin 32 abuts against the spindle box 14, the locking pins 222 lock onto the outer side walls opposite to the fork lugs, and the locking pins 222 and the ejector pin 32 cooperate to lock the shaft fork. The positioning cylinder 22 slides along the output shaft 21 of the spindle box, which can adjust the position of the locking pins 222 and limit the shaft fork of different sizes.

[0037] Reference Figure 4 and Figure 5A fixed cylinder 23 is fitted onto the output shaft 21 of the spindle box. The inner wall of the fixed cylinder 23 has symmetrically formed sliding grooves 231 for the insertion of guide ribs 211. Bolts are threaded onto the fixed cylinder 23 to fix the fixed cylinder 23 and the output shaft 21 of the spindle box, facilitating adjustment of the position of the fixed cylinder 23 while simultaneously securing both. Support plates 24 are symmetrically fixed to the outer wall of the fixed cylinder 23. A first clamping plate 25 is fixedly connected to the side of the support plate 24 closest to the fixed cylinder 23, and a second clamping plate 26 is slidably connected to the side of the support plate 24 furthest from the fixed cylinder 23. A groove 26 is formed between the first clamping plate 25 and the second clamping plate 26. 7. The support plate 24 has a T-shaped groove 241 along its length. The end of the second clamping plate 26 is fixedly connected to a T-shaped slider 261, which slides within the T-shaped groove 241. The second clamping plate 26 is threaded with bolts that fix the second clamping plate 26 and the support plate 24, facilitating the adjustment of the size of the clamping groove 27 to accommodate different sizes of fork ears. The first clamping plate 25 has a threaded hole 251, and the second clamping plate 26 has a through hole 262 for the bolt to pass through. The bolt passes through the through hole 262 of the second clamping plate 26, and the ear hole of the fork ear is threadedly connected to the threaded hole 251 of the first clamping plate 25, thus fixing the fork ear within the clamping groove 27 and achieving the fixation of the clamping groove 27.

[0038] Reference Figure 2 and Figure 6 A receiving cavity 212 is provided in the middle of the output shaft 21 of the spindle box. The receiving cavity 212 is located at the end of the output shaft 21 of the spindle box away from the spindle box 14. A return spring 213 is fixedly connected to the inner wall of the receiving cavity 212. The return spring 213 is horizontally arranged. One end of the return spring 213 is fixedly connected to the inner wall of the receiving cavity 212, and the other end is fixedly connected to an abutment post 214. The end of the abutment post 214 extends out of the receiving cavity 212. The abutment post 214 is used to elastically press against the inner wall of the shaft fork. After the machining is completed, the tension of the return spring 213 facilitates the shaft fork to disengage from the output shaft 21 of the spindle box.

[0039] The implementation principle of a lathe for turning the outer diameter of a forklift according to an embodiment of the present invention is as follows: First, the forklift is fixed inside the output shaft 21 of the headstock, so that the fork lug is sleeved on the output shaft 21 of the headstock. The insertion pins abut against the opposite side of the fork lug, so that the fork lug extends into the slot 27. Then, the motor 34 drives the lead screw 33 to rotate, so that the ejector pin 32 presses the forklift against the output shaft 21 of the headstock. The abutment pin 214 compresses the return spring 213 and is engaged with the side wall of the fork lug. Finally, the fork lug is fixed in the slot 27 by bolts, so that the forklift can be fixed, which makes it easy for the cutter head 12 to turn the outer diameter of the forklift shaft.

[0040] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A lathe for turning the outer diameter of a forklift, comprising a frame (1), a headstock (14) mounted on the frame (1), and a slide rail (13) mounted on the top of the frame (1), characterized in that: The main spindle box (14) is provided with a fixing device for fixing the fork lugs, and the frame (1) is slidably connected with a material ejection mechanism (3) that abuts the shaft body against the fixing device; The fixing device includes a positioning cylinder (22) set on the output shaft of the main spindle box (14). The outer side wall of the positioning cylinder (22) is symmetrically fixedly connected with a snap-fit ​​post (222), which is used to snap onto the outer side wall opposite to the fork lug. The top material mechanism (3) includes a sliding seat (31) slidably connected to the slide rail (13), a top pin (32) is provided on the sliding seat (31), and a drive assembly for driving the sliding seat (31) to slide is provided on the frame (1); A fixed cylinder (23) is sleeved on the output shaft of the main spindle box (14). A support plate (24) is symmetrically fixedly connected to the outer wall of the fixed cylinder (23). A clamping plate (25) is fixedly connected to the side of the support plate (24) close to the fixed cylinder (23). A clamping plate (26) is provided on the side of the support plate (24) away from the fixed cylinder (23). A slot (27) for inserting the fork lug is formed between the clamping plate (25) and the clamping plate (26). A bolt for fixing the fork lug in the slot (27) is threaded on the clamping plate (26). The first card plate (25) has a threaded hole (251), and the second card plate (26) has a through hole (262) for the bolt to pass through. After the bolt passes through the through hole (262) of the second card plate (26) and the ear hole of the fork, it is threadedly connected to the threaded hole (251) of the first card plate (25).

2. The lathe for turning the outer diameter of a forklift according to claim 1, characterized in that: The drive assembly includes a lead screw (33) threaded onto a sliding seat (31), the lead screw (33) is horizontally axially arranged, the lead screw (33) is rotatably connected to the top of the frame (1), and a motor (34) is fixedly connected to the top of the frame (1), the output shaft of the motor (34) is fixed to the lead screw (33).

3. The lathe for turning the outer diameter of a forklift according to claim 1, characterized in that: Two guide ribs (211) are fixedly connected to the output shaft of the main spindle box (14). A guide groove (221) is provided on the inner wall of the positioning cylinder (22). The guide groove (221) is used for the guide ribs (211) to be inserted. A bolt for fixing the positioning cylinder (22) is threaded on the guide cylinder.

4. A lathe for turning the outer diameter of a forklift according to claim 1, characterized in that: The support plate (24) has a T-shaped groove (241) along its length. The end of the second clamping plate (26) is fixedly connected to a T-shaped slider (261). The T-shaped slider (261) is slidably connected in the T-shaped groove (241). The second clamping plate (26) is threaded with bolts that fix the second clamping plate (26) and the support plate (24).

5. A lathe for turning the outer diameter of a forklift according to claim 1, characterized in that: The inner wall of the fixed cylinder (23) is symmetrically provided with sliding grooves (231), which are used for the guide ridge (211) to be inserted. The fixed cylinder (23) is threaded with bolts, which are used to fix the fixed cylinder (23) and the output shaft of the spindle box (14).

6. A lathe for turning the outer diameter of a forklift according to claim 1, characterized in that: The output shaft of the spindle box (14) has a receiving cavity (212) at one end away from the spindle box (14). A return spring (213) is fixedly connected to the inner wall of the receiving cavity (212). The return spring (213) is horizontally arranged. One end of the return spring (213) is fixedly connected to the inner wall of the receiving cavity (212), and the other end is fixedly connected to an abutment post (214). The end of the abutment post (214) extends out of the receiving cavity (212) and is used to elastically abut against the inner wall of the shaft fork (4).

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