Transmission shaft sleeve spline groove positioning tool

Abstract

The utility model relates to a transmission shaft sleeve spline groove positioning tool, which belongs to the field of transmission shaft accessory processing, and comprises a support plate arranged on a rack, a through hole for a broach to pass through is arranged on the support plate, a positioning cylinder is arranged at the position of the support plate at the through hole, and a step groove for supporting a sleeve is arranged in the positioning cylinder. A first clamping mechanism and a second clamping mechanism are arranged on the symmetrical side walls of the rack and used for clamping the outer side wall of the sleeve, and the sleeve is prevented from moving in the axial direction. The sleeve clamping and positioning device has the effect of conveniently clamping and positioning the sleeve.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transmission shaft accessory machining, and particularly relates to a transmission shaft sleeve spline groove positioning tool. BACKGROUND

[0002] The transmission shaft is an important part in the automobile drive train, and is a high-speed rotating body with few supports, so its dynamic balance is crucial. For the front-engine rear-wheel drive car, the transmission shaft is the shaft for transmitting the rotation of the transmission to the main reducer, and can be several sections, and the sections can be connected by universal joints.

[0003] The main function of the transmission shaft sleeve is to protect the transmission shaft from being damaged during driving, and the inner wall of the sleeve is provided with a key groove. The key groove is fixed with the shaft and the parts (such as gears, synchronous pulleys, etc.) on the shaft through the installation of a key, so as to ensure that they do not rotate relatively during operation, thereby realizing the transmission of power and movement.

[0004] When machining the key groove of the sleeve, the sleeve is usually placed on a broaching machine, and a broach on the broaching machine is used to open the key groove on the inner wall of the sleeve. The key groove is arranged in the axial direction of the sleeve, so the broach slides in parallel along the axial direction of the sleeve to open the groove. Since the sleeve is cylindrical, the broach applies a thrust to the axial direction of the sleeve when opening the groove on the inner wall of the sleeve, so the sleeve is prone to moving during machining. CONTENT OF THE INVENTION

[0005] The present application aims to overcome the above technical problems, and provides a transmission shaft sleeve spline groove positioning tool.

[0006] The utility model provides a kind of transmission shaft sleeve pipe spline groove positioning frock, including being set on the support plate of rack, support plate is set with locating cylinder in the position of through hole, locating cylinder is set with the step groove for supporting sleeve in, the first clamping mechanism and the second clamping mechanism are set to the symmetrical side wall of rack, the first clamping mechanism and the second clamping mechanism are used to clamp the outside wall of sleeve, prevent sleeve axial movement.By using the above technical scheme, when the user uses, sleeve is placed in locating cylinder when fixing sleeve, the first clamping mechanism and the second clamping mechanism are mutually resistant to the outside wall of sleeve, to fix sleeve, prevent slotting process, sleeve axial sliding.Optimally, the first clamping mechanism includes first abutment component and second abutment component, first abutment component and second abutment component are half circular arc shape and are set to be buckled, first abutment component and second abutment component are connected with drive assembly on the side away from each other, and drive assembly drives first abutment component and second abutment component to move towards each other or away from each other.By using the above technical scheme, when the user uses, drive assembly drives first abutment component and second abutment component to move towards each other, first abutment component and second abutment component can abut and fix sleeve, fix sleeve in locating cylinder, when drive assembly drives first abutment component and second abutment component to move away from each other, first abutment component and second abutment component can be away from sleeve, facilitate sleeve to be taken out from locating cylinder, through the cooperation of drive assembly, first abutment component and second abutment component, facilitate the disassembly and installation of sleeve.Optimally, the first clamping component and the second clamping component include two clamping rods, two clamping rods are half circular, and connecting shaft is fixedly connected between two connecting rods, and clamping rod on the bottom is detachably connected with clamping rod, clamping rod is half circular, and the bottom of clamping rod is fixedly connected with multiple insertion rods, and the outer side wall of insertion rod is provided with inclined surface.By using the above technical scheme, when drive assembly drives clamping rod to move towards each other, insertion rod is inserted between sleeve and locating cylinder, and through the cooperation of inclined surface, the inner wall of sleeve and locating cylinder can be more tightly abutted, so as to fix sleeve more firmly.Optimally, the drive assembly includes two connecting rods hinged to the inner wall of rack, the connecting rods are parallelly arranged, and the ends, away from the rack, of the two connecting rods are commonly hinged to a connecting rod, the connecting rod is connected to the two clamping rods, a gas cylinder is hinged to the support plate, the cylinder body of the gas cylinder is hinged to the support plate, and the end of the piston rod of the gas cylinder is hinged to the bottom of the connecting rod.By using the above technical scheme, when the piston rod of the gas cylinder is extended, the connecting rod is pushed to move upwards around the hinge point, that is, the clamping rod can be driven to move upwards away from the sleeve, and when the piston rod of the gas cylinder is retracted, the connecting rod is pulled to move downwards around the hinge point, that is, the clamping rod can be driven to abut against the outer side wall of the sleeve to automatically fix the sleeve.Optimally, the connecting rod is provided with a through hole, a guide column is fixedly connected to the clamping rod, a nut is threadedly connected to the guide column after the guide column passes through the through hole of the connecting rod, and a buffer spring is sleeved on the guide column.By adopting the above technical solution, when the broach cuts grooves into the sleeve, impact and vibration will occur between the broach and the sleeve. The buffer spring can buffer and reset, providing a certain amount of movement space for the clamping rod. Simultaneously, the tension of the buffer spring ensures that the clamping rod always abuts and supports against the outer wall of the sleeve. Preferably, the snap-fit ​​rod and the clamping rod are detachably connected. By adopting the above technical solution, the user can easily disassemble and install the snap-fit ​​rod and the insertion rod. Preferably, the clamping rod has multiple mounting holes, and multiple screws are fixedly connected to the snap-fit ​​rod. The screws pass through the mounting holes, and nuts are threaded onto both sides of the mounting holes. By adopting the above technical solution, the user can loosen the nuts to adjust the position of the screws, thus adjusting the relative position of the snap-fit ​​rod and the clamping rod. Unscrewing the nut above the clamping rod allows the snap-fit ​​rod and the clamping rod to be separated. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the positioning fixture of this application installed on a broaching machine;

[0008] Figure 2 This is a sectional view of the positioning fixture of this application installed on a broaching machine;

[0009] Figure 3 This is an exploded view of an embodiment of this application.

[0010] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Guide rail; 12. Upper tool holder; 13. Broach; 14. Lower tool holder; 2. Support plate; 21. Through hole; 22. Positioning cylinder; 221. Step groove; 3. First clamping mechanism; 31. Clamping rod; 311. Guide post; 32. Connecting shaft; 33. Snap-fit ​​rod; 331. Mounting hole; 34. Insertion rod; 341. Inclined surface; 342. Screw; 35. Connecting rod; 36. Connecting rod; 361. Through hole; 37. Buffer spring; 38. Cylinder; 4. Second clamping mechanism. Detailed Implementation

[0011] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0012] Example 1:

[0013] A keyway broaching machine for drive shaft sleeves, as shown in the reference. Figure 1 The machine includes a frame 1, with a guide rail 11 vertically arranged on the inner wall of the frame 1. An upper cutter holder 12 is vertically slidably connected to the guide rail 11, and a pull cutter 13 is fixedly connected to the upper cutter holder 12. The pull cutter 13 is vertically arranged, and a lower cutter holder 14 is arranged at the bottom of the inner wall of the frame 1. The lower cutter holder 14 is used to insert and cooperate with the pull cutter 13, and slides vertically with the pull cutter 13 to cut grooves on the inner wall of the sleeve.

[0014] Example 2:

[0015] The embodiment of the application discloses a transmission shaft sleeve spline groove positioning tool, referring to Figure 1 and Figure 2 , including a support plate 2 arranged on a rack 1, a through hole 21 is arranged on the support plate 2 for the drawknife 13 to pass through, a positioning cylinder 22 is arranged at the position of the through hole 21, a stepped groove 221 for supporting the sleeve is arranged in the positioning cylinder 22, a first clamping mechanism 3 and a second clamping mechanism 4 are arranged on the symmetrical side walls of the rack 1, and the first clamping mechanism 3 and the second clamping mechanism 4 are used for clamping the outer side wall of the sleeve to prevent the sleeve from moving in the axial direction. When the sleeve is fixed, the sleeve is placed in the positioning cylinder 22, the first clamping mechanism 3 and the second clamping mechanism 4 are tightly pressed against the outer side wall of the sleeve, so that the sleeve is fixed, and the sleeve is prevented from sliding in the axial direction in the process of slotting. The effect of effectively preventing the sleeve from moving in the machining process is achieved, and the precision and quality of the spline groove machining are improved.

[0016] Referring to Figure 2 and Figure 3 , the first clamping mechanism 3 and the second clamping mechanism 4 each include two clamping rods 31, the two clamping rods 31 are semicircular, a connecting shaft 32 is fixedly connected between the two connecting rods 36, a clamping rod 33 is detachably connected to the bottom clamping rod 31, the clamping rod 33 is semicircular, a plurality of plug-in rods 34 are fixedly connected to the bottom of the clamping rod 33, and an inclined surface 341 is arranged on the outer side wall of the plug-in rod 34; the plug-in rod 34 is inserted between the sleeve and the positioning cylinder 22, the inner wall of the sleeve and the positioning cylinder 22 can be tightly pressed through cooperation of the inclined surface 341, so that the sleeve is fixed more firmly. A plurality of mounting holes 331 are arranged on the clamping rod 31, a plurality of screw rods 342 are fixedly connected to the clamping rod 33, the screw rods 342 penetrate the mounting holes 331, and nuts are threadedly connected to the two sides of the screw rods 342 located in the mounting holes 331; the nuts are loosened, the position of the screw rod 342 is adjusted, the relative position of the clamping rod 33 and the clamping rod 31 is adjusted, and the clamping rod 33 and the clamping rod 31 are separated by loosening the nuts above the clamping rod 31.

[0017] The inner wall of the rack 1 on the symmetrical two sides is provided with a connecting rod 35, and the rack 1 is provided with two connecting rods 35 on each side, and the two connecting rods 35 on the same side are arranged in parallel with each other, and the two connecting rods 35 are hingedly connected with a connecting rod 36 at the end away from the rack 1; the connecting rod 36 is provided with a through hole 361, the clamping rod 31 is fixedly connected with a guide column 311, the guide column 311 is threadedly connected with a nut after penetrating through the through hole 361 of the connecting rod 36, and the guide column 311 is sleeved with a buffer spring 37; the support plate 2 is hingedly connected with a gas cylinder 38, the cylinder body of the gas cylinder 38 is hingedly connected to the support plate 2, and the piston rod end of the gas cylinder 38 is hingedly connected to the bottom of the connecting rod 35. The piston rod of the gas cylinder 38 is extended, the connecting rod 35 is pushed to move upward around the hinge point, that is, the clamping rod 31 can be driven to move upward away from the sleeve, the piston rod of the gas cylinder 38 is retracted, the connecting rod 35 is pulled to move downward around the hinge point, that is, the clamping rod 31 can be driven to abut against the outer side wall of the sleeve to automatically fix the sleeve.

[0018] The implementation principle of the transmission shaft sleeve spline groove positioning tool is: first, the sleeve is placed in the positioning cylinder 22, the bottom of the sleeve abuts against the stepped groove 221, the piston rod of the gas cylinder 38 is retracted, the connecting rod 35 is pulled to move downward around the hinge point, that is, the clamping rod 31 can be driven to abut against the outer side wall of the sleeve, the insertion rod 34 is inserted between the sleeve and the positioning cylinder 22, and through the cooperation of the inclined surface 341, the inner wall of the sleeve and the positioning cylinder 22 can be abutted more tightly, so that the sleeve is fixed more firmly; the broach 13 is inserted and fixed with the lower tool seat 14 after penetrating through the sleeve and the through hole 21, and the vertical movement of the broach 13 cuts the inner wall of the sleeve. After cutting, the piston rod of the gas cylinder 38 is extended, the connecting rod 35 is pushed to move upward around the hinge point, that is, the clamping rod 31 can be driven to move upward away from the sleeve, so that the sleeve is convenient to take out.

[0019] The above are preferred embodiments of the present application, but do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A drive shaft sleeve spline groove positioning tool characterized by: The utility model provides a kind of tool holder, including the support plate (2) being set on the rack (1), the through hole (21) for broach (13) to pass through is opened in support plate (2), support plate (2) is located the position of through hole (21) and is provided with locating cylinder (22), locating cylinder (22) is provided with the step groove (221) for supporting sleeve, the symmetric side wall of rack (1) is provided with first clamping mechanism (3) and second clamping mechanism (4), first clamping mechanism (3) and second clamping mechanism (4) are used to clamp the outside wall of sleeve, prevent sleeve from moving along the axial direction; The first clamping mechanism (3) and the second clamping mechanism (4) each include a first abutting component and a second abutting component, the first abutting component and the second abutting component are arranged in a half-circular arc shape and are oppositely buckled, and the first abutting component and the second abutting component are connected on the side opposite to each other with a driving component for driving the first abutting component and the second abutting component to move towards each other or away from each other; The first abutting component and the second abutting component each include two clamping rods (31), the two clamping rods (31) are each half-circular, a connecting shaft (32) is fixedly connected between the two connecting rods (36), a clamping rod (33) is detachably connected to the bottom clamping rod (31), the clamping rod (33) is arranged in a half-circular shape, and a plurality of insertion rods (34) are fixedly connected to the bottom of the clamping rod (33).

2. A transmission shaft sleeve spline groove positioning tool according to claim 1, characterized in that: The driving component includes two connecting rods (35) hingedly connected to the inner wall of the rack (1), the two connecting rods (35) are arranged in parallel with each other, one end of the two connecting rods (35) away from the rack (1) is commonly hingedly connected with a connecting rod (36), the connecting rod (36) is connected to the two clamping rods (31), a cylinder (38) is hingedly connected to the support plate (2), the cylinder body of the cylinder (38) is hingedly connected to the support plate (2), and the end of the piston rod of the cylinder (38) is hingedly connected to the bottom of the connecting rod (35).

3. A transmission shaft sleeve spline groove positioning tool as defined in claim 2, wherein: A through hole (21) is formed in the connecting rod (36), a guide column (311) is fixedly connected to the clamping rod (31), a nut is threadedly connected to the guide column (311) after the guide column (311) passes through the through hole (21) of the connecting rod (36), and a buffer spring (37) is sleeved on the guide column (311).

4. A transmission shaft sleeve spline groove positioning tool as defined in claim 2, wherein: The clamping rod (33) and the clamping rod (31) are detachably connected.

5. A transmission shaft sleeve spline groove positioning tool as defined in claim 4, wherein: A plurality of mounting holes (331) are formed in the clamping rod (31), a plurality of screw rods (342) are fixedly connected to the clamping rod (33), the screw rods (342) pass through the mounting holes (331), and nuts are threadedly connected to the two sides of the screw rods (342) in the mounting holes (331).

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