Deflection angle shaft positioning tool

Abstract

A positioning tool for a deflection angle shaft is used for clamping and fixing workpieces of deflection angle shafts, and each workpiece comprises a straight shaft section and an inclined shaft section. The tool comprises a first positioning part and a second positioning part which are located on the two end faces of the deflection angle shaft piece respectively. The workpiece achieves positioning of the straight shaft section and the inclined shaft section through the straight shaft center hole and the inclined shaft center hole, the straight shaft center hole is located in the center axis of the straight shaft section, and the inclined shaft center hole is located in the center axis of the inclined shaft section. The inclined shaft center hole is located in the outward end face of the first positioning part and the outward end face of the second positioning part. The surface, making contact with the workpiece, of the tool is subjected to nickel plating or tin plating treatment. During machining, the tool is installed on a clamp of a rotary workbench of a fourth shaft of the vertical machining center. Compared with the prior art, the method has the following beneficial effects that the machining precision is high, the cost is low, and precise grinding can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of deflection shaft processing, and in particular relates to a deflection shaft positioning tool. Background Art

[0002] A deflection shaft is a special type of shaft that consists of a straight section and an oblique section, where the centerline of the oblique section intersects with the centerline of the straight section at a certain angle. Vertical CNC machining centers are typically used to machine deflection shafts. During machining, the design origin of the deflection shaft is first aligned with the center of the machining center's rotary table, and the position of the axis centerline is determined using tools such as a center drill. Then, by precisely controlling the rotation angle of the CNC table, the straight shaft mounting holes and the oblique shaft center holes that meet the design requirements are machined. However, while this method meets machining requirements to a certain extent, some problems still exist in practical applications:

[0003] 1. Angle limitations lead to insufficient machining accuracy: When the angle between the two centerlines of an angled shaft is small or large, existing machining methods struggle to accurately produce a center hole that meets design requirements. This can cause the center holes of straight and oblique shafts to overlap or deviate from the end faces, impacting product precision and performance. Furthermore, if the intersection of the centerlines is close to the shaft end face, existing machining methods also struggle to ensure the precise placement of the center hole. This can also lead to machining errors, impacting product quality and service life.

[0004] 2. Insufficient grinding accuracy: Existing machining methods struggle to achieve precision grinding of the shaft diameter. This not only limits the product's surface finish and dimensional accuracy, but can also affect the bearing's installation accuracy, ultimately impacting the operational stability and lifespan of the entire system. Furthermore, due to the need for multiple adjustments and calibrations, existing machining methods are inefficient for machining complex deflection shafts, increasing production costs and time.

[0005] 3. High processing costs: Currently, small-batch trial production of deflection shafts can only be performed using five-axis turning and milling machines, which are expensive. Furthermore, the need for multiple workpiece adjustments and complex positioning operations during the machining process can reduce material utilization, increasing material costs.

[0006] In summary, the existing angled axis machining technology has obvious limitations when dealing with specific geometric shapes and high precision requirements, and urgently needs to be improved to improve machining accuracy, efficiency and product performance. Utility Model Content

[0007] In order to solve the above technical problems, the present invention solves them through the following technical solutions.

[0008] The application discloses a deflection angle shaft positioning tool which is used for clamping and fixing a workpiece of a deflection angle shaft, and the workpiece comprises a straight shaft section and an inclined shaft section.

[0009] As a preferred technical scheme of the deflection angle shaft positioning tool, the tool comprises a fixed insertion shaft and a fixed nut, the first positioning part and the second positioning part are located on the axial two sides of the fixed insertion shaft, the straight shaft center hole is located on the outward end faces of the first positioning part and the second positioning part, and the fixed insertion shaft passes through the workpiece and fixes the workpiece through the fixed nut.

[0010] As a preferred technical scheme of the deflection angle shaft positioning tool, the tool comprises a positioning head and a positioning cover, and the first positioning part and the second positioning part are located on the positioning head and the positioning cover respectively. The two sides of the workpiece are a large end and a small end respectively, the large end is provided with an assembly hole, the positioning head is assembled on the large end, and the positioning cover is assembled with the small end. The straight shaft center hole is located on the two side end faces of the workpiece, and the positioning cover and the positioning head are provided with through holes coaxial with the straight shaft center hole.

[0011] As a preferred technical scheme of the deflection angle shaft positioning tool, the tool comprises two positioning covers, and the first positioning part and the second positioning part are located on the two positioning covers respectively. The two sides of the workpiece are small ends, and the two positioning covers are assembled on the small ends on the two sides respectively. The straight shaft center hole is located on the two side end faces of the workpiece, and the positioning cover is provided with a through hole coaxial with the straight shaft center hole.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] 1. By using the tool, the machining precision of the deflection angle shaft can be ensured, the machining efficiency is high, and the demand of mass production can be met.

[0014] 2. Precise grinding of the shaft diameter part can be realized, and the precision and service life of the product are improved.

[0015] 3. The process does not need an expensive five-axis turning and milling compound machine tool, the machining cost is low, and the cost control of the product is facilitated. DETAILED DESCRIPTION

[0016] Figure 1 The assembly structure diagram of the short and thick deflection angle shaft and the corresponding tool.

[0017] Figure 2 This is the assembly structure diagram of the pagoda-shaped deflection shaft and the corresponding tooling.

[0018] Figure 3 This is the assembly structure diagram of the slender angled shaft and the corresponding tooling.

[0019] The following is a description of the symbols in the drawings of the specification:

[0020] 1. Workpiece; 2. Fixed plug-in shaft; 3. Fixed nut; 4. Positioning head; 5. Positioning cover; 6. Center hole of straight shaft; 7. Center hole of oblique shaft; 8. Through hole; 9. Threaded hole. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0022] In the following embodiments, the same or similar numbers throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Reference Figures 1 to 3The present utility model proposes an angled shaft positioning fixture for clamping and fixing an angled shaft workpiece 1, wherein the workpiece 1 includes a straight shaft section and an oblique shaft section, and the fixture includes a first positioning portion and a second positioning portion respectively located at the two end faces of the angled shaft. The workpiece 1 realizes the positioning of the straight shaft section and the oblique shaft section through the straight shaft center hole 6 and the oblique shaft center hole 7 respectively. The straight shaft center hole 6 is located on the central axis of the straight shaft section, and the oblique shaft center hole 7 is located on the central axis of the oblique shaft section. The oblique shaft center hole 7 is located on the outward end faces of the first positioning portion and the second positioning portion. The function of the first positioning portion and the second positioning portion is to increase the distance from the intersection of the axes of the straight shaft section and the oblique shaft section to the end faces where the straight shaft center hole 6 and the oblique shaft center hole 7 are located, so that the spacing between the straight shaft center hole 6 and the oblique shaft center hole 7 is increased to improve the positioning accuracy and avoid the problem of the straight shaft center hole 6 and the oblique shaft center hole 7 overlapping and interfering with each other or drifting away from the end faces. This design makes the tooling applicable to most short and small angular axis workpieces 1, especially those with axis angles that are too large or too small and axis intersections that are close to the end faces. It is easy to ensure the consistency of product processing and can realize mass production.

[0025] To ensure machining accuracy and the service life of the tooling, the surface of the tooling in contact with the workpiece 1 is nickel-plated or tin-plated. This design can utilize the low hardness and high ductility of such metals to achieve static fit between the workpiece 1 and the tooling and multiple reuse.

[0026] As an embodiment of the present invention, the fixture includes a fixed plug shaft 2 and a fixing nut 3. The first and second positioning portions are located on either side of the fixed plug shaft 2 in the axial direction. The straight shaft center hole 6 is located on the outward end surfaces of the first and second positioning portions. The fixed plug shaft 2 passes through the workpiece 1 and is fixed to the workpiece 1 by the fixing nut 3. This fixture structure is suitable for short and thick deflection shafts.

[0027] As another embodiment of the present invention, the fixture includes a positioning head 4 and a positioning cover 5, wherein the first positioning portion and the second positioning portion are located on the positioning head 4 and the positioning cover 5, respectively. The workpiece 1 has a large end and a small end on either side, and the large end is provided with an assembly hole. The positioning head 4 is assembled on the large end, and the positioning cover 5 is assembled on the small end. The straight shaft center hole 6 is located on both side end surfaces of the workpiece 1, and the positioning cover 5 and the positioning head 4 are provided with a through hole 8 coaxial with the straight shaft center hole 6. This fixture structure is suitable for pagoda-shaped deflection shafts.

[0028] As another embodiment of the present invention, the fixture includes two positioning caps 5, with the first and second positioning portions located on each cap 5. The workpiece 1 has two small ends, and the two positioning caps 5 are mounted on each of these small ends. Each positioning cap 5 is provided with a through hole 8 coaxial with the center hole 6 of the straight shaft. This fixture structure is suitable for slender angled shafts.

[0029] In order to facilitate the drawing clamping, the positioning cover 5 and the positioning head 4 are provided with threaded holes 9 in the above embodiment, which facilitates the fixation of the tooling and the clamp, and the dismounting of the workpiece 1 from the tooling after the machining is completed.

[0030] At present, the small batch trial of the partial angle shaft can only be processed by a five-axis turning and milling compound machine tool, and the shaft diameter part cannot be precisely ground. The partial angle shaft can be processed by the processing method, and the batch production of the partial angle shaft workpiece 1 can be realized on a common machining center, and the consistency of product processing is easy to ensure.

[0031] The protection scope of the utility model includes but is not limited to the above embodiment, and the protection scope of the utility model is subject to the claims, and any replacement, deformation, improvement of the technical personnel in the field of the present technology is easy to think of, and falls into the protection scope of the utility model.

Claims

1. An angular axis positioning fixture for clamping and fixing an angular axis workpiece (1), wherein the workpiece (1) comprises a straight axis section and an oblique axis section, and is characterized in that: The tooling comprises a first positioning portion and a second positioning portion respectively located at the two end surfaces of the angled shaft; the workpiece (1) is positioned on the straight shaft section and the oblique shaft section respectively through the straight shaft center hole (6) and the oblique shaft center hole (7), the straight shaft center hole (6) is located on the central axis of the straight shaft section, and the oblique shaft center hole (7) is located on the central axis of the oblique shaft section; the oblique shaft center hole (7) is located on the outward end surface of the first positioning portion and the second positioning portion; the surface of the tooling in contact with the workpiece (1) is nickel-plated or tin-plated; during machining, the tooling is mounted on the fixture of the rotary table of the fourth axis of the vertical machining center.

2. The angular axis positioning tool according to claim 1, characterized in that: The tooling comprises a fixed plug shaft (2) and a fixed nut (3), wherein the first positioning portion and the second positioning portion are located on both axial sides of the fixed plug shaft (2), and the straight shaft center hole (6) is located on the outward end surfaces of the first positioning portion and the second positioning portion. The fixed plug shaft (2) passes through the workpiece (1) and fixes the workpiece (1) via the fixed nut (3).

3. The angular axis positioning tool according to claim 1, characterized in that: The tooling comprises a positioning head (4) and a positioning cover (5), wherein the first positioning part and the second positioning part are respectively located on the positioning head (4) and the positioning cover (5); the two sides of the workpiece (1) are a large end and a small end, respectively, and an assembly hole is provided on the large end, the positioning head (4) is assembled on the large end, and the positioning cover (5) is assembled with the small end; the straight shaft center hole (6) is located on the end faces of both sides of the workpiece (1), and the positioning cover (5) and the positioning head (4) are provided with a through hole (8) coaxial with the straight shaft center hole (6).

4. The angular axis positioning tool according to claim 1, characterized in that: The tooling comprises two positioning covers (5), wherein the first positioning portion and the second positioning portion are respectively located on the two positioning covers (5); the two sides of the workpiece (1) are small ends, and the two positioning covers (5) are respectively assembled on the small ends on the two sides; the straight shaft center hole (6) is located on the end faces of both sides of the workpiece (1), and the positioning cover (5) is provided with a through hole (8) coaxial with the straight shaft center hole (6).

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