Manufacturing process for avoiding machining interference, multi-directional toolpath bar

Abstract

The application provides a manufacturing process of a multi-directional tool bar avoiding machining interference, and relates to the technical field of tool bar manufacturing. The manufacturing process of the multi-directional tool bar avoiding machining interference comprises the following manufacturing steps: S1, raw material preparation, selecting an alloy bar material according to the use requirement of a customer, then cutting the alloy bar material according to the size, cleaning the surface of the cut alloy bar material after the cutting is completed, and obtaining a tool bar raw material; S2, lathe debugging, resetting and debugging the machining lathe, then clamping and fixing the tool bar raw material in the step S1 by using a lathe clamp. The lathe equipment is reset and debugged before machining, the tool bar raw material is fixed by using a lathe clamp, and the tool bar raw material is processed subsequently after center positioning again, so that the machining interference and the multi-directional tool bar are avoided during the machining process, and the machining precision of the tool bar machining is improved.

Description

Technical Field

[0001] This invention relates to the field of tool holder manufacturing technology, specifically to a manufacturing process for a tool holder that avoids machining interference and allows for multi-directional tool travel. Background Technology

[0002] Tool holder machining is a very interesting and profound technology. Machining is inseparable from cutting tools. Tool holders are designed for machining, and cutting tools are used to make machining faster, cheaper, safer, more durable, and so on. Tool holders can be classified according to their structure into integral, welded, and insert tool holders. Each type has its own advantages and disadvantages. Machinists can select different tools according to the different material requirements.

[0003] With the increasing demands for product precision, carbide tool holders are widely used in the machining of everyday workpieces. During the cutting process, the cutting part of the tool holder bears a lot of impact and friction, which makes high-speed steel turning tools prone to wear, bending, or chipping, which is not conducive to the subsequent machining of workpieces. Therefore, those skilled in the art have proposed a manufacturing process for a multi-directional tool holder that avoids machining interference to solve the above-mentioned technical problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a manufacturing process for a multi-directional tool holder that avoids machining interference, solving the problems of tool holders and cutting tools easily experiencing wear, bending, or chipping in existing machining processes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a manufacturing process for a multi-directional tool holder that avoids machining interference, comprising the following manufacturing steps:

[0006] S1: Raw Material Preparation

[0007] Based on the customer's usage requirements, select alloy bar material, then cut the alloy bar material according to the size, and clean the surface of the cut alloy bar material to obtain the tool holder raw material.

[0008] S2: Lathe Adjustment

[0009] Reset and debug the machining lathe, then use the lathe fixture to clamp and fix the tool holder material in step S1. After clamping and fixing, center the tool holder material on the lathe.

[0010] S3: Raw material preheating

[0011] After the center positioning is completed in step S2, the raw material of the tool holder is heated in stages with residual heat, and the raw material of the tool holder is heat treated before processing.

[0012] S4: Tool holder machining

[0013] After the preheating treatment in step S3, the tool holder raw material is chamfered and flattened on a lathe. After the treatment, it is rough and fine ground on the outer diameter, stepped by a CNC step machine, and finally sharpened to obtain the original tool holder product.

[0014] S5: Tool holder quenching

[0015] The original tool holder product in step S4 is subjected to high-temperature quenching. After the high-temperature quenching is completed, the original tool holder product is cooled by oil immersion.

[0016] S6: Product Formation

[0017] The original tool holder product after oil cooling in step S5 is cleaned and then dried at high temperature to obtain the tool holder product.

[0018] Preferably, the alloy bar used in step S1 is a cemented carbide material, and the surface cleaning of the alloy bar includes the treatment of surface impurities and the rounding of the cut area and the cut gap.

[0019] Preferably, the preheating of the tool holder raw material in step S3 includes three stages: the first stage is to heat to 300-350℃ and hold for 20 minutes; the second stage is to heat to 500-650℃ and hold for 30 minutes; and the third stage is to heat to 800-1100℃ and hold for 50-60 minutes.

[0020] Preferably, in step S4, the inlet guide angle of the tool holder raw material is 0.6*0.6, the edge of one end of the tool holder raw material is a 45-degree full circumference angle of 0.5mm after rough grinding and fine grinding of the outer circle, and the tooth root fillet of the tool holder raw material is R0.05.

[0021] Preferably, in step S5, the temperature for high-temperature quenching of the original tool holder is 1400-1550℃, the quenching time is 45-65min, the number of quenching cycles is 3-5, and the quenching frequency of the original tool holder is 13-15kHz.

[0022] Preferably, in step S6, the temperature of the cleaning water used to clean the original tool holder product after oil cooling is 80-95℃, the number of cleaning cycles is 6-8, the high-temperature drying temperature is 120-145℃, and the drying time is 2-3 hours.

[0023] This invention provides a manufacturing process for a multi-directional tool holder that avoids machining interference. It offers the following advantages:

[0024] 1. This invention avoids machining interference and multi-directional tool movement during the machining process by resetting and adjusting the lathe equipment before machining and fixing the tool holder raw material with the lathe fixture and centering it again before proceeding with the subsequent machining. This improves the machining accuracy of the tool holder and facilitates its subsequent use.

[0025] 2. This invention improves the plasticity of the tool holder raw material by preheating it before processing, which also facilitates subsequent processing of the tool holder. After the tool holder is processed, it is quenched again and cooled by oil cooling, which forms an oil protective film on the surface of the tool holder. This helps to improve the service life and structural strength of the tool holder and makes it less prone to wear and damage during use. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Example:

[0028] This invention provides a manufacturing process for a multi-directional tool holder that avoids machining interference, comprising the following manufacturing steps:

[0029] S1: Raw Material Preparation

[0030] Based on the customer's usage requirements, select alloy bar material, then cut the alloy bar material according to the size, and clean the surface of the cut alloy bar material to obtain the tool holder raw material.

[0031] S2: Lathe Adjustment

[0032] Reset and debug the machining lathe, then use the lathe fixture to clamp and fix the tool holder material in step S1. After clamping and fixing, center the tool holder material on the lathe.

[0033] S3: Raw material preheating

[0034] After the center positioning is completed in step S2, the raw material of the tool holder is heated in stages with residual heat, and the raw material of the tool holder is heat treated before processing.

[0035] S4: Tool holder machining

[0036] After the preheating treatment in step S3, the tool holder raw material is chamfered and flattened on a lathe. After the treatment, it is rough and fine ground on the outer diameter, stepped by a CNC step machine, and finally sharpened to obtain the original tool holder product.

[0037] S5: Tool holder quenching

[0038] The original tool holder product in step S4 is subjected to high-temperature quenching. After the high-temperature quenching is completed, the original tool holder product is cooled by oil immersion.

[0039] S6: Product Formation

[0040] The original tool holder product after oil cooling in step S5 is cleaned and then dried at high temperature to obtain the tool holder product.

[0041] In step S1, the alloy bar material used is cemented carbide. The surface cleaning of the alloy bar includes the treatment of surface impurities and the rounding of the cut edges and kerfs.

[0042] The raw material for the tool holder can be determined according to the customer's usage requirements. The aforementioned alloy bar uses cemented carbide material, which is made by powder metallurgy from refractory metal compounds and metal binders. The refractory metal compound is either WC or TIC, and the metal binder is Co. If the customer's requirements are different, the machining personnel can also replace the cemented carbide material with high-speed steel material, such as general-purpose high-speed steel, high-performance high-speed steel, or powder metallurgy high-speed steel material. The specific material of the tool holder is determined by the customer's usage requirements.

[0043] The preheating of the tool holder raw material in step S3 includes three stages: the first stage is to heat to 300-350℃ and hold for 20 minutes; the second stage is to heat to 500-650℃ and hold for 30 minutes; and the third stage is to heat to 800-1100℃ and hold for 50-60 minutes.

[0044] The heat treatment process of the tool holder is determined according to the special structure of the tool holder and the usage requirements. When heat treating the tool holder, it is necessary to first perform quenching and tempering treatment with a hardness of 28-32 HRC. After semi-finishing, surface nitriding treatment is performed with a nitriding layer thickness of 0.4-0.6 mm and a hardness of 600-750 HV. After heat treatment, it should be ensured that the tool holder does not deform and meets the design accuracy requirements.

[0045] In step S4, the inlet guide angle of the tool holder material is 0.6*0.6, and the edge of one end of the tool holder material is a 45-degree full circumference angle of 0.5mm after rough grinding and fine grinding of the outer diameter. The root fillet of the tool holder material is R0.05.

[0046] When processing the raw material of the tool holder, the guide angle of the tool holder raw material is opened by using a lathe, and then the material is chamfered, flattened, and rough and fine ground on the outer diameter by using a lathe. After that, it is stepped again by a CNC step machine, and finally the edge is sharpened to obtain the original tool holder product. Through the precise processing of the lathe, a prototype of a tool holder product is obtained. Then, through subsequent processing, the final tool holder product is obtained.

[0047] In step S5, the temperature for high-temperature quenching of the original tool holder is 1400-1550℃, the quenching time is 45-65min, the number of quenching cycles is 3-5, and the quenching frequency of the original tool holder is 13-15KHZ.

[0048] High-temperature quenching is a composite heat treatment process in which steel or workpiece blanks are heated to the stable austenitic region, held at that temperature for an appropriate time, and then deformed and quenched above the recrystallization temperature. High-temperature quenching does not have any special requirements for steel and can be achieved on both carbon steel and low-alloy steel.

[0049] High-temperature quenching can also significantly improve the impact toughness of steel. In the absence of non-martensitic structures, high-temperature quenching can reduce irreversible temper brittleness and eliminate reversible temper brittleness. High-temperature quenching also has a good effect on the fatigue limit of steel. For example, after high-temperature deformation quenching and tempering at 300℃, the fatigue limits of 55Si2 and 50CrMnA steels are 617MPa and 588MPa, respectively, while the fatigue limits after ordinary heat treatment are 519MPa and 510MPa, respectively, which is about 20% higher. In addition, high-temperature deformation quenching can also improve the hot strength, fracture toughness and crack propagation energy of steel.

[0050] In step S6, the cleaning water temperature for cleaning the original tool holder after oil cooling is 80-95℃, the number of cleaning cycles is 6-8, the high-temperature drying temperature is 120-145℃, and the drying time is 2-3 hours.

[0051] After the original tool holder is machined and quenched, it is treated by oil cooling. The purpose is to eliminate the stress generated in the steel during heat treatment, so that the steel has high hardness and wear resistance, as well as the required plasticity and toughness, and eliminate possible deformation and cracks.

[0052] The oil used in the oil cooling process is silicone oil. The main methods for cleaning the tool holder after quenching and oil cooling are: ultrasonic cleaning, spray cleaning, or immersion cleaning. Silicone oil can be cleaned with silicone oil cleaner. Silicone oil cleaner is a nearly neutral concentrate produced by a water-based polyol mixture of high-quality anionic and nonionic surfactants. It is highly efficient and has strong cleaning and purification properties. It is completely rinseable and convenient for cleaning silicone oil residue on tool holders, making it easy for users to use.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for a multi-directional tool holder that avoids machining interference, characterized in that, The manufacturing process includes the following steps: S1: Raw Material Preparation Based on the customer's usage requirements, select alloy bar material, then cut the alloy bar material according to the size, and clean the surface of the cut alloy bar material to obtain the tool holder raw material. S2: Lathe Adjustment Reset and debug the machining lathe, then use the lathe fixture to clamp and fix the tool holder material in step S1. After clamping and fixing, center the tool holder material on the lathe. S3: Raw material preheating After center positioning in step S2, the tool holder raw material is preheated in stages, and heat-treated before processing. The preheating of the tool holder raw material in step S3 includes three stages: the first stage is to heat to 300-350℃ and hold for 20 minutes; the second stage is to heat to 500-650℃ and hold for 30 minutes; and the third stage is to heat to 800-1100℃ and hold for 50-60 minutes. S4: Tool holder machining After the preheating treatment in step S3, the tool holder raw material is chamfered and flattened on a lathe. After the treatment, it is rough and fine ground on the outer diameter, stepped by a CNC step machine, and finally sharpened to obtain the original tool holder product. In step S4, the inlet guide angle of the tool holder raw material is 0.6*0.6, the edge of one end of the tool holder raw material is a 45-degree full circumference angle of 0.5mm after rough grinding and fine grinding of the outer circle, and the tooth root fillet of the tool holder raw material is R0.

05. S5: Tool holder quenching The original tool holder product in step S4 is subjected to high-temperature quenching. After the high-temperature quenching is completed, the original tool holder product is cooled by oil immersion. S6: Product Formation The original tool holder product after oil cooling in step S5 is cleaned and then dried at high temperature to obtain the tool holder product.

2. The manufacturing process of a multi-directional tool holder that avoids machining interference according to claim 1, characterized in that: In step S1, the alloy bar is made of cemented carbide. The surface cleaning of the alloy bar includes the treatment of surface impurities and the rounding of the cut edges and kerfs.

3. The manufacturing process of a multi-directional tool holder that avoids machining interference according to claim 1, characterized in that: In step S5, the temperature for high-temperature quenching of the original tool holder is 1400-1550℃, the quenching time is 45-65min, the number of quenching cycles is 3-5, and the quenching frequency of the original tool holder is 13-15kHz.

4. The manufacturing process of a multi-directional tool holder that avoids machining interference according to claim 1, characterized in that: In step S6, the cleaning water temperature for cleaning the original tool holder product after oil cooling is 80-95℃, the number of cleaning cycles is 6-8, the high-temperature drying temperature is 120-145℃, and the drying time is 2-3 hours.