Finishing tool for inner side end face of differential shell

Abstract

The utility model discloses a differential shell inner side end face finish turning tool, which is characterized by comprising a tool bar and a blade, the tool bar comprises a mounting part, an eccentric rod part and a clamping part which are connected in sequence, the blade is embedded at one end of the mounting part and is locked on the mounting part through a screw, and the eccentric rod part is connected with the clamping part. And a positive 2-degree or negative 2-degree angle is formed between the front cutting edge of the blade and the axis direction of the cutter bar. The cutter has the advantages of being simple in structure, high in cutter structural strength, good in anti-vibration capacity and beneficial to improving machining precision.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, specifically to a precision turning tool for the inner end face of a differential housing. Background Technology

[0002] The inner end face of the differential housing needs to be machined to improve its surface accuracy. However, due to the limitations of the differential housing structure, the existing machining method is to modify two internal turning tools of different lengths into end face turning tools. The existing long tool holders have poor vibration damping effect, which easily causes poor surface roughness of the machined end face, seriously affecting the machining quality and failing to meet the accuracy requirements of the inner end face of the differential housing. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a precision turning tool for the inner end face of a differential housing, which has a simple structure and high machining accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A precision turning tool for the inner end face of a differential housing, characterized in that: it includes a tool holder and an insert, wherein the tool holder includes a mounting part, an eccentric rod part, and a clamping part connected in sequence, wherein the insert is embedded in one end of the mounting part, the insert is locked to the mounting part by screws, and the front cutting edge of the insert is at a positive 2° or negative 2° with the axial direction of the tool holder.

[0006] Furthermore, the eccentric rod portion includes a first eccentric portion and a second eccentric portion connected in sequence, wherein the inner sides of the first eccentric portion and the second eccentric portion are connected by an arc surface, and the diameter of the outer arc surface of the first eccentric portion is smaller than the diameter of the outer arc surface of the second eccentric portion.

[0007] Furthermore, the blade is a triangular blade.

[0008] Furthermore, the clamping portion has symmetrically distributed clamping planes.

[0009] The advantages of this utility model include: simple structure, high strength of the tool structure, good vibration resistance, and helps to improve machining accuracy. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model;

[0011] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0013] Example 1

[0014] One such Figure 1 The differential housing rear inner end face finishing tool shown includes a tool holder 1 and an insert 2. The tool holder 1 includes a mounting part a, an eccentric rod part b, and a clamping part c connected in sequence. The insert 2 is a triangular insert, which is embedded in one end of the mounting part a and secured to the mounting part a with screws. The cutting edge of the insert 2 forms a ±2° angle with the axis of the tool holder 1. The cutting edge of the insert 2 protrudes from the outer surface of the tool holder 1. To increase the stability of the tool, the inner surface of the eccentric rod part b is an arc surface, and the inner surface of the eccentric rod part b transitions with the mounting part a and the clamping part c using an arc surface transition. The outer surface of the eccentric rod part b is an arc surface, and the outer surface of the eccentric rod part b transitions with the conical surface of the clamping part c. The clamping part c has symmetrically distributed clamping planes c1.

[0015] Example 2

[0016] One such Figure 2 The differential housing front inner end face precision turning tool shown includes a tool holder 1 and an insert 2. The tool holder 1 includes a mounting part a, an eccentric rod part b, and a clamping part c connected in sequence. The insert 2 is a triangular insert, which is embedded in one end of the mounting part a and secured to the mounting part a with screws. The cutting edge of the insert 2 forms a negative 2° angle with the axis of the tool holder 1. The eccentric rod part b includes a first eccentric part b1 and a second eccentric part b2 connected in sequence. The inner sides of the first eccentric part b1 and the second eccentric part b2 are connected by an arc surface. The diameter of the outer arc surface of the first eccentric part b1 is smaller than the diameter of the outer arc surface of the second eccentric part b2. The inner surface of the eccentric rod part b transitions with the mounting part a and the clamping part c using an arc surface. The outer surface of the eccentric rod part b is an arc surface, and the outer surface of the eccentric rod part b transitions with the conical surface of the clamping part c. The clamping part c has symmetrically distributed clamping planes c1.

[0017] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A precision turning tool for the inner end face of a differential housing, characterized in that: The tool includes a tool holder (1) and a blade (2). The tool holder (1) includes a mounting part (a), an eccentric rod part (b), and a clamping part (c) connected in sequence. The blade (2) is embedded in one end of the mounting part (a). The blade (2) is fastened to the mounting part (a) by screws. The front cutting edge of the blade (2) is at a positive 2° or negative 2° with the axial direction of the tool holder (1).

2. The precision turning tool for the inner end face of a differential housing according to claim 1, characterized in that: The eccentric rod portion (b) includes a first eccentric portion (b1) and a second eccentric portion (b2) connected in sequence, wherein the inner sides of the first eccentric portion (b1) and the second eccentric portion (b2) are connected by an arc surface, and the diameter of the outer arc surface of the first eccentric portion (b1) is smaller than the diameter of the outer arc surface of the second eccentric portion (b2).

3. A precision turning tool for the inner end face of a differential housing according to claim 1, characterized in that: The blade (2) is a triangular blade.

4. A precision turning tool for the inner end face of a differential housing according to claim 1, characterized in that: The clamping part (c) has symmetrically distributed clamping planes (c1).

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