A steel ball replaceable spline shaft nylon shaping tooth side positioning device

Abstract

The present invention discloses a steel ball replaceable spline shaft nylon shaping tooth side positioning device, which mainly includes a nylon shaping tool die seat, etc. The nylon shaping tool is installed in the center of the nylon shaping tool die seat and fixed on the top with a nylon shaping tool pressing plate, a lower center is installed in the center hole of the nylon shaping tool die seat, an upper center is installed just above the lower center, a processing part is clamped between the upper center and the lower center, the nylon shaping tool is located outside the processing part, a linear slider is installed on one side of the nylon shaping tool pressing plate, a line feed rail is connected to the linear slider, the lower part of the circumferential positioning block is connected to the end of the line feed rail, and the circumferential positioning steel ball is fixed to the circumferential positioning block with a steel ball locking screw. The present invention improves the circumferential positioning stability during shaping of the nylon coating on the surface of the spline shaft, improves the wear resistance and maintainability of the device, can realize multiple uses of the positioning steel ball, can maintain the positioning accuracy after replacement, and reduces the adjustment time.

Description

Technical Field

[0001] The invention relates to the field of spline shaft manufacturing, and in particular to a nylon shaping tooth side positioning device of a spline shaft with replaceable steel balls. Background Art

[0002] In the prior art, the spline tooth side and the tooth side of the nylon knife are positioned by using a steel ball to contact the two adjacent tooth sides after coating for circumferential positioning to ensure the stability of the nylon thickness on both sides of the part teeth after the nylon is pushed. The positioning steel ball is welded to the positioning rail. The prior art mainly has the following defects: the positioning steel ball is fixed to the sliding rail by welding, and the high temperature during welding will anneal the quenched steel ball to soften it, and the wear resistance of the steel ball will deteriorate, which will affect the service life of the positioning device after wear; the steel ball of the positioning device will wear during use, and the replacement of the worn steel ball requires removing the steel ball by cutting and other methods, and re-welding, which is a complicated operation. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a nylon shaping tooth side positioning device for a spline shaft with replaceable steel balls.

[0004] The objective of the present invention is to achieve the following technical scheme: this steel ball replaceable spline shaft nylon shaping tooth side positioning device mainly comprises an upper center, a processing part, a nylon shaping tool, a nylon shaping tool pressure plate, a nylon shaping tool die seat, a circumferential positioning block, a steel ball locking screw, a circumferential positioning steel ball, a tension spring, a linear slider, a wire feed slide rail, and a lower center. The nylon shaping tool is installed in the center of the nylon shaping tool die seat and fixed on the top with a nylon shaping tool pressure plate. The lower center is installed in the center hole of the nylon shaping tool die seat, the upper center is installed just above the lower center, the processing part is clamped between the upper center and the lower center, the nylon shaping tool is located outside the processing part, a linear slider is installed on one side of the nylon shaping tool pressure plate, the wire feed slide rail is connected to the linear slider, the wire feed slide rail is tightened with a tension spring, and the two ends of the tension spring are respectively fixed on the wire feed slide rail and the linear slider, the lower part of the circumferential positioning block is connected to the end of the wire feed slide rail, and the circumferential positioning steel ball is fixed to the circumferential positioning block with a steel ball locking screw.

[0005] The upper end of the circumferential positioning block is designed as an inclined surface.

[0006] The line-in slide rail slides linearly on the linear slide block.

[0007] The beneficial effects of the present invention are as follows: the present invention adopts a steel ball structure fixedly installed by a screw, which can maintain the hardness of the steel ball, and can use steel balls with higher hardness such as cemented carbide for positioning, thereby improving the wear resistance of the positioning steel ball and improving the quality stability of the processed products; when the steel ball is worn and needs to be replaced, it is only necessary to unscrew the steel ball locking screw to directly replace it, which is convenient and quick; the inclined surface at the upper end of the circumferential positioning block has the function of preventing the processed parts from colliding with the feed-in slide rail, and can prevent the defects of the processed parts colliding with the feed-in slide rail and causing the feed-in slide rail to bend, deform and be damaged; the circumferential positioning stability during the shaping of the nylon coating on the spline shaft surface is improved, the wear resistance and maintainability of the device are improved, the positioning steel ball can be used multiple times, the positioning accuracy can be maintained after replacement, and the adjustment time is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the present invention.

[0009] Explanation of the reference numerals in the accompanying drawings: upper center 1, processing part 2, nylon shaping tool 3, nylon shaping tool pressure plate 4, nylon shaping tool die base 5, circumferential positioning block 6, steel ball locking screw 7, circumferential positioning steel ball 8, tension spring 9, linear slider 10, feed rail 11, lower center 12. DETAILED DESCRIPTION

[0010] The present invention will be described in detail below with reference to the accompanying drawings:

[0011] Embodiment: As shown in the attached drawings, this steel ball replaceable spline shaft nylon shaping tooth side positioning device mainly includes an upper center 1, a processing part 2, a nylon shaping tool 3, a nylon shaping tool pressure plate 4, a nylon shaping tool die base 5, a circumferential positioning block 6, a steel ball locking screw 7, a circumferential positioning steel ball 8, a tension spring 9, a linear slider 10, a feed rail 11, and a lower center 12. The nylon shaping tool 3 is installed in the center of the nylon shaping tool die base 5 and is fixed on the top with a nylon shaping tool pressure plate 4. The nylon shaping tool A lower center 12 is installed in the center hole of the mold base 5, an upper center 1 is installed just above the lower center 12, a processing part 2 is clamped between the upper center 1 and the lower center 12, a nylon shaping tool 3 is located outside the processing part 2, a linear slider 10 is installed on one side of the nylon shaping tool pressure plate 4, and a line feed rail 11 is connected to the linear slider 10. The line feed rail 11 is tightened by a tension spring 9, and the two ends of the tension spring 9 are respectively fixed on the line feed rail 11 and the linear slider 10, and the line feed rail 11 slides linearly on the linear slider 10. The lower part of the circumferential positioning block 6 is welded to the end of the line feed rail 11, and the circumferential positioning steel ball 8 is fixed to the circumferential positioning block 6 by a steel ball locking screw 7. The upper end of the circumferential positioning block 6 is designed to be an inclined surface.

[0012] Working process of the present invention: driven by the upper top 1 and the lower top 12, the part 2 to be processed is removed through the nylon shaping tool 3 to complete the nylon shaping process. The feed rail 11 of the present invention is fixed in the linear slider 10 on the nylon shaping tool pressure plate 4, and the circumferential positioning steel ball 8 is always in close contact with both sides of the spline tooth groove of the processed part 2, preventing the rotation of the processed part 2 and keeping the phase of the external spline teeth of the processed part 2 and the internal spline groove of the nylon shaping tool 3 stable, ensuring that the thickness of the nylon on both sides of the spline surface of the processed part 2 is uniform. During the downward operation of the spline shaft, when the step surface of the processed part 2 contacts the inclined surface of the upper end of the circumferential positioning block 6, the inclined surface of the processed part 2 will drive the feed rail 11 to retreat outward to prevent the step surface of the processed part 2 from colliding with the circumferential positioning block 6, and avoid the feed rail 11 from being damaged due to bending deformation.

[0013] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.

Claims

1. A steel ball replaceable spline shaft nylon shaping tooth side positioning device, characterized in that: The invention comprises an upper center (1), a processing part (2), a nylon shaping tool (3), a nylon shaping tool pressure plate (4), a nylon shaping tool die base (5), a circumferential positioning block (6), a steel ball locking screw (7), a circumferential positioning steel ball (8), a tension spring (9), a linear slider (10), a line feed slide rail (11), and a lower center (12). The nylon shaping tool (3) is installed at the center of the nylon shaping tool die base (5) and fixed at the top by the nylon shaping tool pressure plate (4). The lower center (12) is installed in the center hole of the nylon shaping tool die base (5), and the upper center (1) is installed directly above the lower center (12). , a processing part (2) is clamped between an upper center (1) and a lower center (12), a nylon shaping tool (3) is located outside the processing part (2), a linear slider (10) is installed on one side of the nylon shaping tool pressure plate (4), the linear slider (10) is connected to a wire feed rail (11), the wire feed rail (11) is tightened by a tension spring (9), both ends of the tension spring (9) are respectively fixed to the wire feed rail (11) and the linear slider (10), the lower part of the circumferential positioning block (6) is connected to the end of the wire feed rail (11), and the circumferential positioning steel ball (8) is fixed to the circumferential positioning block (6) by a steel ball locking screw (7); The upper end of the circumferential positioning block (6) is designed as an inclined surface; The line feed slide rail (11) slides linearly on the linear slide block (10).

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