Multi-head trapezoidal screw processing process
1. Overview. Multi-head trapezoidal screw is a kind of part widely used in the field of mechanical transmission, which is widely used because of its characteristics of high precision, high rigidity and high reliability. In the processing process of multi-head trapezoidal screw, the development and control of the process flow is crucial. This article will introduce the processing process of multi-head trapezoidal screw in detail, in order to provide a useful reference for related enterprises and practitioners.
2. Preparation of raw materials.
The processing of multi-head trapezoidal screw first requires the preparation of qualified raw materials. High-carbon steel or alloy steel bars are usually selected, and reasonable bar diameters and lengths are determined according to design drawings and processing requirements. During the preparation process, the bar stock needs to be checked for quality to ensure that there are no defects such as cracks and slag inclusions.
3. Blanking. Blanking is to cut the raw material into the corresponding blank according to the size required by the design drawing. There are many ways to blanke, such as sawing, turning, milling, etc. In the processing of multi-head trapezoidal screws, milling is generally used for blanking. Milling not only guarantees the dimensional accuracy of the blank, but also removes defects inside the bar during machining.
Fourth, pre-processing.
Pre-processing is an important part of the multi-head trapezoidal screw processing process, which mainly includes end machining, drilling and rough turning of the outer circle. With pre-machining, the blank can be initially adjusted and corrected in preparation for subsequent finishing. In the pre-machining stage, special attention should be paid to controlling the machining allowance of each process to ensure the machining accuracy and efficiency during finishing.
Fifth, the outer circle of the car.
Finishing cylindrical is a key link in the multi-head trapezoidal screw processing process, which is directly related to the final quality and performance of the product. In the finishing cylindrical process, the size, roundness, cylindricity and other parameters of the outer circle should be controlled according to the requirements of the design drawings. At the same time, it is also necessary to polish the outer circle to reduce the surface roughness and improve the appearance quality and corrosion resistance of the product.
6. Milling threads.
The threading of multi-head trapezoidal screws is a core link in the entire process. In the thread milling operation, appropriate tools and cutting parameters should be selected to ensure the accuracy and surface quality of the thread. At the same time, it is also necessary to control the lead and rotation direction of the thread to meet the design requirements. In order to reduce vibration and heat during the milling process, cutting fluids can be used for cooling and lubrication.
7. Heat treatment.
Heat treatment is an indispensable part of the multi-head trapezoidal screw machining process. Through heat treatment, the internal structure of the material can be adjusted to improve its mechanical properties and corrosion resistance. In the heat treatment process, parameters such as heating temperature, holding time and cooling rate should be controlled to ensure the stability and reliability of material properties. At the same time, it is also necessary to pay attention to the oxidation and decarburization in the heat treatment process to ensure the appearance quality and dimensional accuracy of the product.
8. Quality inspection.
Quality inspection is a crucial part of the multi-head trapezoidal screw machining process. Through quality inspection, we can fully understand whether the performance indicators of the product meet the design requirements. The content of quality inspection mainly includes size testing, surface quality testing, mechanical property testing, etc. For unqualified products, rework or scrapping should be carried out in time to ensure the overall quality and reliability of the products. At the same time, the results of quality inspection can also be used as an important reference for subsequent production process improvement.
9. Packaging and transportation.
Finally, the multi-head trapezoidal screw that has passed the quality test needs to be packed and transported. In the packaging process, appropriate packaging materials and methods should be selected according to the characteristics of the product and transportation requirements to ensure that the product is not damaged during transportation. At the same time, it is also necessary to indicate the specifications, quantity, production date and other information of the product on the packaging, so as to facilitate subsequent storage and use management. During transportation, special attention should be paid to the shockproof, moisture-proof and rust-proof problems of the product to reduce the risk of damage to the product during transportation.