Method for machining crank taper spline of motorcycle and machining device thereof

Abstract

The application discloses a motorcycle crank taper spline machining method and a machining device thereof. The crank taper spline machining device comprises a clamp, a coaxial rotating disc arranged and installed at the bottom end of the clamp, a crank placed at the top end of the clamp, an axially movable top pin arranged and installed at the top end of the crank, a workpiece high-pressure airflow nozzle arranged and installed at the top end of the taper spline, a cutter high-pressure airflow nozzle arranged and installed at the top end of a cutter, the cutter being installed and fixed on a cutter clamping plate, the cutter clamping plate being connected with a guide sleeve, and upper and lower limit blocks being arranged and installed at the upper and lower ends of a guide column respectively. A turning gear of the upper limit block is connected with an upper limit block turning shaft to adjust the taper. A guide sleeve fixing plate is connected with a guide sleeve turning gear, the guide sleeve turning gear is connected with a guide sleeve turning power shaft, and the axial turning of the crank is completed. The application can realize multi-directional adjustment of the cutter and rapid machining of taper splines with different models and tapers.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of crank taper spline machining, in particular to a motorcycle crank taper spline machining method and machining device thereof. BACKGROUND

[0002] The spline of the motorcycle crank is one of the most important components for torque transmission in the engine, and the manufacturing process level and product quality directly affect the quality of the motorcycle engine assembly. At the same time, the taper spline crank requires high speed, large torque and frequent switching of forward and reverse rotation, so the machining quality requirement is strict. The traditional flat spline machining method cannot meet the requirements of surface hardness and machining precision, and the special machining equipment needs to be designed for the machining of different taper splines, which is difficult to process flexibly, which not only increases the process cost, but also reduces the production efficiency. Therefore, in view of the problems of great machining difficulty, high machining precision requirement, low machining efficiency and poor universality of the tool in the current motorcycle crank taper spline machining process, it is urgent to design a motorcycle crank taper spline machining device and machining method. The design and development of the motorcycle crank taper spline machining device with adjustable taper open up a new way of thinking. SUMMARY

[0003] The present application provides a motorcycle crank taper spline machining method and machining device, which can realize multi-directional adjustment of the tool, real-time removal of cutting materials during the machining process, thereby realizing rapid machining of taper splines of different models and different tapers, and effectively improving the machining quality of the taper spline.

[0004] The present application adopts the following technical scheme: a motorcycle crank taper spline machining method, which realizes the machining of the spline of the motorcycle crank taper, and specifically includes the following steps:

[0005] Step one, the crank is fixed in the clamp, the top pin is fed to the predetermined position along the crank shaft, the clamping and fixing are completed, and the crank rotates around its shaft with the coaxial turntable;

[0006] Step two, the upper limit block steering gear is rotated to a predetermined taper under the driving action of the upper limit block steering shaft, and the tool is driven by the power shaft to approach the taper spline machining area position;

[0007] Step three, the tool is driven by the power shaft to move up and down continuously along the guide column, and at the same time, the guide sleeve steering gear is driven by the guide sleeve steering power shaft to adjust the tool angle in real time during the machining process, and the taper spline characteristics are machined in the taper spline machining area;

[0008] Step four, during the taper spline machining process, the workpiece high-pressure airflow nozzle and the tool high-pressure airflow nozzle spray high-speed airflow to clean the cutting materials on the taper spline machining area and the tool in real time, respectively;

[0009] Step five, the cutter servo shaft moves outward to a predetermined position, the ejector pin exits along the crank shaft, and the finished tapered spline crank is removed;

[0010] Step six, repeat the above steps to finally achieve the continuous processing of the tapered spline crank.

[0011] Further, in step two, the upper limit block steering shaft drives the upper limit block steering gear, thereby adjusting the taper of the pre-processed spline.

[0012] The application also discloses a motorcycle crank tapered spline processing device, which mainly comprises a coaxial turntable, a clamp, an ejector pin, a workpiece high-pressure airflow nozzle and a workpiece high-pressure airflow pipeline.

[0013] Further, the cutter of the tapered spline processing device mainly comprises a cutter high-pressure airflow pipeline, a cutter high-pressure airflow nozzle, an upper limit block, an upper limit block steering gear, an upper limit block steering shaft, a power shaft, a guide sleeve steering power shaft, a guide sleeve steering gear, a guide column, a guide sleeve, a guide sleeve fixing plate, a cutter clamping plate, a cutter and a lower limit block.

[0014] The application has the following beneficial effects: after the above technical scheme is adopted, the motorcycle crank spline processing device is improved, multi-directional adjustment of the cutter is realized, cutting materials are removed in real time during the processing, tapered splines of different types and different tapers are rapidly processed, the process steps are reduced, the production efficiency is improved, and the processing quality of the tapered spline is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the examples or prior art description.

[0016] Figure 1 The schematic view of the crank taper spline machining device.

[0017] Figure 2 The schematic view of the crank taper spline clamp.

[0018] Figure 3 The schematic view of the crank taper spline machining system.

[0019] Figure 4 The schematic view of the cutting object removing device.

[0020] The drawings are as follows: 1, coaxial turntable; 2, clamp; 5, ejector pin; 6, workpiece high-pressure airflow nozzle; 7, workpiece high-pressure airflow pipeline; 8, cutter high-pressure airflow pipeline; 9, cutter high-pressure airflow nozzle; 10, upper limit block; 11, upper limit block steering gear; 12, upper limit block steering shaft; 13, power shaft; 14, guide sleeve steering power shaft; 15, guide sleeve steering gear; 16, guide column; 17, guide sleeve; 18, guide sleeve fixing plate; 19, cutter clamping plate; 20, cutter; 21, lower limit block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings and implementation examples in the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0022] In Figure 1 the present application, a motorcycle crank taper spline machining device is provided, which mainly comprises a coaxial turntable 1, a clamp 2, an ejector pin 5, a workpiece high-pressure airflow nozzle 6 and a workpiece high-pressure airflow pipeline 7. Figure 2 In the present application, the clamp 2 is provided with and installed with the coaxial turntable 1 at the bottom end, and the crank 3 is placed at the top end. The surface of the crank 3 is provided with a taper spline to-be-machined area 4. The crank 3 is provided with and installed with the axially movable ejector pin 5 at the top end. Figure 4In the embodiment, the upper end of the taper spline to be machined area 4 is provided with a workpiece high-pressure airflow nozzle 6, the nozzle of the workpiece high-pressure airflow nozzle 6 is opposite to the taper spline to be machined area 4, the gas inlet end of the workpiece high-pressure airflow nozzle 6 is connected with a workpiece high-pressure airflow pipeline 7, a taper spline machining device is arranged and installed on the right side of the crank 3, the taper spline machining device is used for taper spline machining on the taper spline to be machined area 4, and in the Figure 3 In the embodiment, the taper spline machining device cutter mainly includes a cutter high-pressure airflow pipeline 8, a cutter high-pressure airflow nozzle 9, an upper limiting block 10, an upper limiting block steering gear 11, an upper limiting block steering shaft 12, a power shaft 13, a guide sleeve steering power shaft 14, a guide sleeve steering gear 15, a guide column 16, a guide sleeve 17, a guide sleeve fixing plate 18, a cutter clamping plate 19, a cutter 20 and a lower limiting block 21, and in the Figure 4 In the embodiment, the upper end of the taper spline to be machined area 4 is provided with a workpiece high-pressure airflow nozzle 6, the nozzle of the workpiece high-pressure airflow nozzle 6 is opposite to the taper spline to be machined area 4, the gas inlet end of the workpiece high-pressure airflow nozzle 6 is connected with a workpiece high-pressure airflow pipeline 7, a taper spline machining device is arranged and installed on the right side of the crank 3, the taper spline machining device is used for taper spline machining on the taper spline to be machined area 4, and in the

[0023] The application also discloses a motorcycle crank taper spline machining method, which realizes spline machining of a motorcycle crank taper, and specifically comprises the following steps: step one, the crank 3 is fixed in the clamp 2, the ejector pin 5 is axially fed to a predetermined position along the crank 3, clamping and fixing are completed, and the crank 3 rotates around the axis of the coaxial turntable 1; step two, the upper limit block steering gear 11 is rotated to a predetermined taper under the driving action of the upper limit block steering shaft 12, and the cutter 20 is driven by the power shaft 13 to approach the taper spline machining area 4, the upper limit block steering shaft 12 drives the upper limit block steering gear 11 in the embodiment, so that the taper of the spline to be pre-machined is adjusted; step three, the cutter 20 is driven by the power shaft 13 to continuously reciprocate up and down along the guide column 16, at the same time, the guide sleeve steering gear 15 is driven by the guide sleeve steering power shaft 14 to adjust the angle in real time during the machining process, and the taper spline characteristics are machined in the taper spline machining area 4; step four, during the taper spline machining process, the workpiece high-pressure airflow nozzle 6 and the cutter high-pressure airflow nozzle 9 spray high-speed airflow to clean the taper spline machining area 4 and the cutting material on the cutter 20 in real time; step five, the cutter 20 is moved outward to a predetermined position along with the power shaft 13, the ejector pin 5 is axially withdrawn along the crank 3, and the taper spline crank that has been machined is taken out; and step six, the above steps are repeated, and finally, the continuous machining process of the crank taper spline is realized.

[0024] The motorcycle crank spline machining device is improved, the cutter is adjusted in multiple directions, and cutting materials are removed in real time during the machining process, taper splines of different models and different tapers are rapidly machined, the process steps are reduced, the production efficiency is improved, and the machining quality of the taper spline is improved.

[0025] The above disclosed embodiments are only used to illustrate the features and concepts of the application, and the purpose is to enable those skilled in the related art to implement or use the application. Various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motorcycle crank taper spline machining apparatus characterized by The crank taper spline machining device mainly comprises a coaxial rotating disc (1), a clamp (2), a ejector pin (5), a workpiece high-pressure airflow nozzle (6) and a workpiece high-pressure airflow pipeline (7), the bottom end of the clamp (2) is provided with and installed with the coaxial rotating disc (1), the top end of the clamp (2) is placed with the crank (3), the surface of the crank (3) is provided with a taper spline to-be-machined area (4), the top end of the crank (3) is provided with and installed with the axially movable ejector pin (5), the upper end of the taper spline to-be-machined area (4) is provided with the workpiece high-pressure airflow nozzle (6), the nozzle of the workpiece high-pressure airflow nozzle (6) is opposite to the taper spline to-be-machined area (4), the air inlet end of the workpiece high-pressure airflow nozzle (6) is connected with the workpiece high-pressure airflow pipeline (7), the right side of the crank (3) is provided with and installed with a taper spline machining device, the taper spline machining device is used for taper spline machining on the taper spline to-be-machined area (4), the cutter of the taper spline machining device mainly comprises a cutter high-pressure airflow pipeline (8), a cutter high-pressure airflow nozzle (9), an upper limiting block (10), an upper limiting block steering gear (11), an upper limiting block steering shaft (12), a power shaft (13), a guide sleeve steering power shaft (14), a guide sleeve steering gear (15), a guide column (16), a guide sleeve (17), a guide sleeve fixing plate (18), a cutter clamping plate (19), a cutter (20) and a lower limiting block (21), the top end of the cutter (20) is provided with and installed with the cutter high-pressure airflow nozzle (9), the nozzle of the cutter high-pressure airflow nozzle (9) is opposite to the cutter (20), the air inlet end of the cutter high-pressure airflow nozzle (9) is connected with the cutter high-pressure airflow pipeline (8), the cutter (20) is installed and fixed on the cutter clamping plate (19), the cutter clamping plate (19) is connected with the guide sleeve (17), the guide sleeve (17) is matched with the guide column (16), the upper and lower ends of the guide column (16) are respectively provided with and installed with the upper limiting block (10) and the lower limiting block (21), wherein the upper limiting block (10) is connected with the upper limiting block steering gear (11), the upper limiting block steering gear (11) is connected with the upper limiting block steering shaft (12) to adjust the taper, the power shaft (13) is connected with the guide sleeve fixing plate (18), the guide column (16) and the guide sleeve (17) are matched to complete the feeding movement, the guide sleeve fixing plate (18) is connected with the guide sleeve steering gear (15), the guide sleeve steering gear (15) is connected with the guide sleeve steering power shaft (14) to complete the axial steering of the crank.

2. The motorcycle crank taper spline machining apparatus according to claim 1, characterized by The method for machining the taper spline of the motorcycle crank by using the machining device comprises the following steps: Step one, the crank (3) is fixed in the clamp (2), the ejector pin (5) is axially fed to the predetermined position along the crank (3), the clamping and fixing are completed, and the crank (3) rotates around the axis together with the coaxial rotating disc (1); Step two, the upper limiting block steering gear (11) is rotated to the predetermined taper under the driving action of the upper limiting block steering shaft (12), and the cutter (20) is driven by the power shaft (13) to approach the taper spline to-be-machined area (4) position; Step three, the cutter (20) driven by the power shaft (13) along the guide post (16) up and down continuous reciprocating motion, at the same time, the guide sleeve steering gear (15) driven by the guide sleeve steering power shaft (14), with the processing of real-time adjustment angle, in the taper spline to be processed area (4) processing taper spline characteristics; Step four, in the taper spline processing, workpiece high pressure gas jet (6) and cutter high pressure gas jet (9) to spray high speed airflow, respectively on the taper spline to be processed area (4) and cutter (20) on the cutting object real-time cleaning; Step five, the cutter (20) with power shaft (13) to move outward to the predetermined position, the ejector pin (5) along the crank (3) axial exit, take out the taper spline crank has been processed; Step six, repeat the above steps, the final realization of the crank taper spline continuous processing of the process.

3. The motorcycle crank taper spline machining apparatus according to claim 2, characterized by Step two, the upper limit block steering shaft (12) driven by the upper limit block steering gear (11), so as to adjust the taper of the pre processing spline.

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