Thin-walled special-shaped part machining tooling

Abstract

The utility model discloses a kind of thin-wall special-shaped part machining tool, relate to machining technical field, including mandrel and compression ring, the central part of this mandrel is provided with through-hole along axial direction, the middle part of the mandrel outer wall is circumferentially equipped with a convex ring, the outer wall of the end surface of the mandrel and the compression ring is connected and is evenly distributed with multiple tongue piece avoidance slot, the width A of the tongue piece avoidance slot is adapted to the width a of the inner tongue piece of through shaft locking piece, the outer diameter of the end surface is adapted to the inner hole of the through shaft locking piece;The compression joint end width B of the compression ring is adapted to the width b of the convex ring, compared with prior art, the utility model can stably limit the thin-wall special-shaped part to be processed between the convex ring of mandrel and compression ring, effectively avoid the problem that size deviation or overall deformation is caused due to workpiece loosening in processing process, significantly improve processing precision.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a tooling for machining thin-walled irregular-shaped parts. Background Technology

[0002] In automotive transmission systems, the axle, as a core component, undertakes crucial functions such as transmitting power, supporting the vehicle body, and enabling vehicle movement and braking. Its performance and reliability directly affect the overall operating status of the vehicle. The through-shaft locking plate, as a key component in the axle system, plays an irreplaceable role in ensuring the stable operation of the axle.

[0003] The through-shaft locking plate is a thin-walled part with a design thickness of 2mm. It has an inner tongue 100 at the inner hole 102, and 12-18 outer tongues 101 evenly distributed around the outer ring. Figure 1 and Figure 2 As shown, this unique structural design is the foundation of its functionality. The through-shaft locking plate works in conjunction with the nut on the axle, preventing loosening of the nut through a bidirectional anti-rotation mechanism. Once the nut and through-shaft locking plate have completed their anti-rotation function, they effectively limit the movement of the nut, preventing it from loosening due to vibration or other factors during vehicle operation, thus ensuring the stable connection of the axle components. Simultaneously, this design also facilitates subsequent disassembly, maintenance, and repair, reducing maintenance difficulty.

[0004] The through-shaft locking plate needs to be installed in a specific location on the axle housing assembly during assembly, but this location has significant space limitations. To adapt to this spatial constraint and ensure smooth assembly and proper functioning, its outer diameter needs to be adjusted to match the installation space requirements, further increasing the complexity of the part's design and manufacturing. Due to the irregular shape, thin material, and low strength of the through-shaft locking plate, deformation is highly likely during processing. This not only affects the dimensional and shape accuracy of the part, making it unable to meet assembly requirements, but may also reduce its performance and service life, thus adversely impacting the reliability of the axle system. Furthermore, the need to adjust the outer diameter according to the assembly space places higher demands on the machining process. Therefore, designing a tooling and machining method that meets the machining requirements of the through-shaft locking plate while maintaining its overall integrity during processing is crucial for solving the above problems and ensuring part quality. Utility Model Content

[0005] The problem to be solved by this utility model is to provide a tooling for processing thin-walled irregular parts that can meet the processing requirements of through shaft locking plates and keep the through shaft locking plates as a whole from deforming during the processing.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: This tooling for processing thin-walled irregular parts includes a mandrel and a pressure ring. The mandrel has a through hole in its center along the axial direction, and a convex ring is provided circumferentially in the middle of the outer wall of the mandrel. The outer wall of the end face of the mandrel connected to the pressure ring is provided with a plurality of tongue relief grooves evenly distributed. The width A of the tongue relief groove is adapted to the width a of the inner tongue of the through shaft locking piece, and the outer diameter of the end face is adapted to the inner hole of the through shaft locking piece. The width B of the pressing end of the pressure ring is adapted to the width b of the convex ring.

[0007] In the above-mentioned technical solution for machining tooling of thin-walled irregular parts, a more specific technical solution may be: the length H of the tongue clearance groove is greater than or equal to the length h of the inner tongue of the through shaft locking piece.

[0008] In some possible implementations, the distance L from the end face of the mandrel with the tongue clearance groove to the end face of the convex ring is equal to the length H of the tongue clearance groove.

[0009] In some possible implementations, the inner side of the pressure ring at the pressure end is a hollow cavity, wherein the diameter of the cavity is equal to the inner diameter of the through shaft locking piece.

[0010] In some possible implementations, the pressure ring has a pressure ring through hole in its central axis, which corresponds to the through hole of the mandrel, and the pressure ring and the mandrel are fixed together by bolts.

[0011] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0012] 1. Because the width of the convex ring and the pressure ring in the middle of the outer wall of the mandrel are adapted to each other, and the outer diameter of the mandrel end face is matched with the inner hole of the through shaft locking piece, the thin-walled irregular part to be processed can be stably restricted between the convex ring and the pressure ring of the mandrel, effectively avoiding dimensional deviations caused by workpiece loosening during processing, and significantly improving processing accuracy.

[0013] 2. Due to the tongue clearance grooves evenly distributed on the end face of the mandrel, the width of which is adapted to the width of the inner tongue of the through shaft locking piece, and the length is greater than or equal to the length of the inner tongue, this design can accommodate the inner tongue structure of the workpiece, prevent the inner tongue from being squeezed or damaged during clamping or processing, and ensure the structural integrity of the workpiece.

[0014] 3. Since the mandrel and pressure ring are fixed by bolts and both have corresponding through holes in their centers, not only is space provided for bolt connection, but also the tooling and processing equipment can be positioned and connected through the through holes according to actual processing needs, which enhances the flexibility and stability of tooling use. At the same time, the position setting of the tongue clearance groove on the mandrel further optimizes the workpiece placement space, making workpiece installation more convenient and positioning more accurate.

[0015] 4. Effectively improves the processing quality and efficiency of thin-walled irregular parts. Stable clamping and precise positioning reduce vibration and displacement during processing, lowering the scrap rate. The suitable structural design and convenient installation method also shorten workpiece clamping time, improving overall processing efficiency and making it suitable for mass production scenarios.

[0016] 5. When using this tooling for machining, the overall rigidity formed by the staggered installation of multiple locking pieces, combined with the machining method of separating the left and right sides towards the middle in step E, can greatly disperse the machining stress generated during turning. By dispersing the radial force through symmetrical turning, it avoids bending deformation of thin-walled workpieces due to unidirectional force. In particular, it can ensure that the outer tongue piece maintains its shape stability during machining, thereby ensuring the dimensional and shape accuracy of the outer circle of the outer tongue piece and reducing the scrap rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the through-shaft locking plate.

[0018] Figure 2 for Figure 1 AA sectional view.

[0019] Figure 3 This is a schematic half-sectional view of the structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the mandrel of this utility model.

[0021] Figure 5 This is an exploded view of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the first through-shaft locking piece of this utility model.

[0023] Figure 7 This is a schematic diagram of the structure of the second through-shaft locking piece of this utility model, which is designed for misaligned clamping.

[0024] Figure 8 This is a schematic diagram of the structure of the third through-shaft locking piece of the misaligned clamping device of this utility model.

[0025] Figure 9 This is a schematic diagram of the processing direction of this utility model.

[0026] Explanation of markings in the diagram:

[0027] Mandrel 1, convex ring 1-1, tongue relief groove 1-2, pressure ring 2, through hole 3, pressure ring 4, bolt 5. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this utility model more readily understood, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figures 3-5The embodiment shown provides a machining fixture for thin-walled irregular parts, including a mandrel 1 and a pressure ring 2. A through hole 3 is axially formed at the center of the mandrel. A convex ring 1-1 is circumferentially formed at the middle of the outer wall of the mandrel. The width B of the pressing end of the pressure ring 2 is adapted to the width b of the convex ring 2. When the workpiece is clamped, the convex ring provides a stable support surface for the thin-walled irregular part. It cooperates with the pressure ring to confine the thin-walled irregular part to be processed between them, forming an effective clamping mechanism. This prevents axial movement of the thin-walled irregular part during processing, avoids dimensional deviations caused by loosening, and significantly improves processing accuracy. The outer wall of the end face where the mandrel connects to the pressure ring 2 is uniformly distributed with... Multiple tongue clearance grooves 1-2 are provided. The width A of the tongue clearance groove is adapted to the width a of the inner tongue 100 of the through shaft locking plate, which can accurately accommodate the inner tongue and prevent the inner tongue from being squeezed and damaged during clamping and processing. The outer diameter of the end face with the tongue clearance groove 1-2 is adapted to the inner hole 102 of the through shaft locking plate. The length H of the tongue clearance groove 1-2 is greater than or equal to the length h of the inner tongue 100 of the through shaft locking plate, which can further ensure that the inner tongue is fully inserted and will not be deformed due to insufficient space. Moreover, the pushing action of the tongue clearance groove on the inner tongue of the locking plate can assist in the positioning of the inner tongue, prevent the workpiece from shaking randomly during processing, and enhance the stability of processing. The distance L from the end face of the mandrel 1 with the tongue relief groove 1-2 to the end face of the convex ring 1-1 is equal to the length H of the tongue relief groove. The tongue relief groove 1-2 extends to the end of the mandrel. This design provides sufficient space for the placement of the workpiece, allowing the inner tongue to have a suitable position in the tongue relief groove. This prevents the workpiece from being improperly installed due to limited space, ensuring the accuracy of workpiece clamping and thus improving machining precision. The inner side of the pressing end of the pressure ring 2 is a hollow cavity, the diameter of which is equal to the diameter of the inner hole 102 of the through shaft locking piece. The pressure ring 2 has a pressure ring through hole 4 in its central axis, which corresponds to the through hole 3 of the mandrel 1. The pressure ring 4 and the mandrel 1 are connected and fixed by bolts 5.

[0031] like Figures 6-9 As shown, its processing method includes the following steps:

[0032] A. Align the inner tongue of the through shaft locking piece with the tongue clearance groove on the end face of the mandrel to ensure that the inner tongue can be smoothly embedded in the groove; then, put the locking piece through its inner hole onto the end of the mandrel with the tongue clearance groove, and push the through shaft locking piece until its back side is completely in contact with the side of the convex ring of the mandrel to avoid gaps affecting subsequent positioning.

[0033] B. Following the same method as in step A, install the remaining through-shaft locking pieces into the mandrel in sequence. When clamping, make sure that the inner tongue of each locking piece is embedded in the different tongue clearance slots on the mandrel to achieve staggered installation. This can avoid mutual interference between the inner tongues and create conditions for improving the overall rigidity of the locking pieces during subsequent processing.

[0034] C. Align the pressing end of the pressure ring with the front part plane of the clamped through shaft locking piece to ensure that the hollow cavity of the pressure ring matches the inner hole of the through shaft locking piece. Then, insert the pressure ring into the shaft end of the mandrel with the tongue relief groove until the pressing end of the pressure ring is close to the surface of the through shaft locking piece.

[0035] D. Pass a bolt through the through hole in the center of the pressure ring and insert it into the center through hole of the mandrel. Fix the pressure ring to the mandrel through the threaded connection. Tighten the bolt. During the tightening process, observe whether the pressure ring is tightly fitted with the through shaft locking piece. At the same time, ensure that there are no gaps between each through shaft locking piece and between the through shaft locking piece and the side of the mandrel convex ring. This will enhance the overall rigidity through mutual compression and prevent loosening during processing.

[0036] E. After clamping and securing, turn the outer circle of the outer tongue of the through shaft locking piece. During machining, take advantage of the overall rigidity formed by the tight contact between multiple through shaft locking pieces. The outer circle machining method adopts the left and right feed directions separately, that is, first feed from the left / right side to the middle reference line, and then feed from the right / left side to the middle reference line. The radial force is dispersed by symmetrical turning to avoid bending deformation of thin-walled workpieces due to unidirectional force.

[0037] In other embodiments, in step B, after embedding multiple through-shaft locking plates into different tongue clearance slots on the mandrel, a second layer of through-shaft locking plates is clamped on the mandrel in the same clamping method as in step B. Multiple through-shaft locking plates are stacked in a staggered manner, and two through-shaft locking plates are stacked in the same tongue clearance slot.

[0038] The mandrel can clamp at least six layers of through-shaft locking plates. Multiple through-shaft locking plates are stacked and staggered with each other, and at least six through-shaft locking plates are stacked in the same tongue clearance groove.

[0039] This utility model can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A tooling fixture for machining thin-walled irregular-shaped parts, characterized in that: The device includes a mandrel and a pressure ring. The mandrel has a through hole in its center along the axial direction. A convex ring is circumferentially provided in the middle of the outer wall of the mandrel. The outer wall of the end face of the mandrel that connects to the pressure ring has a plurality of tongue clearance grooves evenly distributed. The width A of the tongue clearance groove is adapted to the width a of the inner tongue of the through shaft locking piece. The outer diameter of the end face is adapted to the inner hole of the through shaft locking piece. The width B of the pressing end of the pressure ring is adapted to the width b of the convex ring.

2. The tooling for machining thin-walled irregular parts according to claim 1, characterized in that: The length H of the tongue clearance groove is greater than or equal to the length h of the inner tongue of the through shaft locking piece.

3. The tooling for machining thin-walled irregular parts according to claim 1 or 2, characterized in that: The distance L from the end face of the mandrel with the tongue clearance groove to the end face of the convex ring is equal to the length H of the tongue clearance groove.

4. The tooling for machining thin-walled irregular parts according to claim 3, characterized in that: The inner side of the pressure ring at the pressure end is a hollow cavity, the diameter of which is equal to the inner diameter of the through shaft locking piece.

5. The tooling for machining thin-walled irregular-shaped parts according to claim 3, characterized in that: The pressure ring has a pressure ring through hole in its central axis, which corresponds to the through hole of the mandrel. The pressure ring and the mandrel are fixed together by bolts.

6. The tooling for machining thin-walled irregular parts according to claim 4, characterized in that: The pressure ring has a pressure ring through hole in its central axis, which corresponds to the through hole of the mandrel. The pressure ring and the mandrel are fixed together by bolts.

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