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China Shenzhen Perfect Precision Product Co., Ltd. company news

How to define precision machining

7s words believes that the definition of precision machining is to complete the final processing of main surfaces according to steps and procedures, including workpiece parallelism, surface finish, surface perpendicularity, surface hardness, etc., so that the processing accuracy and surface quality of parts can meet the requirements of the drawing.   1. Parallelism requirements The so-called parallelism requirement is to require the tolerance around the workpiece. For example, for a rectangular workpiece, the thickness of the four corners of the workpiece is required to reach a certain tolerance range. If the thickness of the four sides cannot meet the tolerance requirements, the parallelism requirements cannot be met. This requires readjusting the workpiece. The problem may occur in the suction cup of the grinder. The suction cup is worn due to excessive use, resulting in parallelism errors; It may also be that the grinding wheel is not repaired well, or the grinding wheel has cracks and gaps. At this time, it is necessary to regrind the grinding wheel; It may also be that the suction cup is not cleaned, so it is necessary to clean the suction cup again and carefully; It may also be that the workpiece is not trimmed well and burrs appear.   2. Verticality requirements The so-called perpendicularity requirement is to require the side and ground of the workpiece to meet the tolerance requirements. The best understanding is the proper body. From the number axis, it is divided into XYZ three sides. Generally, XZ and YZ are required to meet the tolerance requirements. The error is also roughly consistent with the requirements of parallelism. Generally, it can be handled according to the requirements of parallelism.   3. Other requirements For example, finish. It is required to achieve, such as mirror effect, etc.

2022

07/01

Factors affecting machining accuracy of precision parts

As we all know, the reason why the machining of precision parts is called precision machining is that its machining process and process requirements are very high, and the precision requirements for products are very high. The machining precision of precision parts includes the precision of position, size and shape. The following are the factors that affect the machining precision of precision parts:   (1) The spindle rotation runout of the machine tool can produce a certain error to the machining accuracy of the parts.   (2) The inaccuracy of machine tool guide rail can also lead to the error of workpiece shape in precision parts processing.   (3) Transmission parts can also cause workpiece machining errors, which is also the main factor of workpiece surface errors.   (4) Different types of cutting tools and fixtures will also have different degrees of impact on the accuracy of the workpiece.   (5) In the process of machining and cutting, the change of the position of the force point will lead to the deformation of the system, resulting in differences, and can also cause varying degrees of error in the accuracy of the workpiece.   (6) The different cutting force will also affect the workpiece accuracy.   (7) The error caused by thermal deformation of the process system. During machining, the process system will produce certain thermal deformation under the action of various heat sources.   (7) The deformation caused by the heating of the process system often affects the accuracy of the workpiece.   (8) Deformation of the machine tool due to heating will cause deformation of the workpiece.   (9) Tool deformation due to heating will have a great impact on the workpiece.   (10) The workpiece itself is deformed by heating, which is mainly caused by heating in the cutting process.

2022

06/30

How to improve the quality of precision parts machining

First of all, the staff must have rich experience in machining and excellent technology. Machining must have excellent technology to do well. As we all know, machining is the same fine work. It is a great test of the production process. Even if it can be done well, it will take a long time. If it doesn't start well at the beginning, it is easy to waste all previous efforts.   Secondly, whether the processing process is standardized and excellent also determines whether the product is of high quality. This is also an indispensable reference point when we use it to formulate the company's rules and regulations. Both production and management necessarily need a set of perfect processes, which serve to make perfect products.   Thirdly, we must pay attention to communication in the production process. No matter when there is a node time or a problem, we must strengthen communication. The communication between the processing plant and the equipment manufacturer is an important condition for doing a good job in the processing of automation equipment parts. The processing personnel usually carry out the processing work according to the drawings, but more often, many process places can be simplified and improved, which can not only reduce the cost, but also improve the efficiency.

2022

06/30

Application for ISO13485:2016 certification

The application has passed ISO13485:2016 certification. Welcome to order cnc machining medical parts.

2022

05/27

Newell CNC machining center has passed the inspection of national machine tool quality supervision and Inspection Center

Recently, it was learned from Newell CNC equipment (Suzhou) Co., Ltd. that the five axis linkage vertical machining center VM604F and the five axis linkage gantry machining center PM2506U produced by the company successfully passed the inspection of the national machine tool quality supervision center, marking that the technical level of Newell CNC equipment has reached a new level. It is reported that multi axis linkage CNC machine tools have always been an important reference to measure the technical level of machine tool enterprises, especially the R & D and manufacturing of linkage machine tools with more than five axes. After years of technical accumulation, Newell CNC equipment has successfully developed and produced five axis linkage vertical machining center vm604f and five axis linkage gantry machining center pm2560u. In july2017, professionals from the national machine tool quality supervision center conducted a comprehensive inspection on the two five axis machine tools from the aspects of safety, reliability, accuracy, environmental protection and so on. The inspection report was released recently. More than 200 items of test data show that all indicators of the machine tool are better than the control standard, which fully demonstrates the excellent performance of Newell CNC equipment manufacturing.  

2017

08/30

CFRP will play a role in CNC machining center manufacturing

The Japan Machine Tool Industry Association and the new energy industry technology comprehensive development organization (NEDO) began to design a new generation of 5-axis NC machining. This equipment is expected to adopt carbon fiber reinforced plastic (CFRP) parts this year.   After adopting CFRP with light weight, not easy to thermal expansion and excellent vibration absorption, the energy efficiency of CNC machining center can be greatly improved by about 20% and the machining accuracy can be improved. It is expected to be practical in 2018.   According to Japanese media reports, Japan's OKUMA, FANUC, DMG Mori Seiji and other major machine tool enterprises have cooperated with many Japanese universities, NEDO and other institutions to analyze and determine the basic specifications of CFRP parts on the computer in the first half of this year, and plan to complete the "standard model" by 2018. At that time, companies can use CFRP standard parts on their machine tools as the standard. Although there are already machine tools with CFRP components such as spindle, this development will design and adjust the CNC machining center from scratch to ensure that CFRP can play a role in machining more shapes after replacing metal components.   The proportion of CFRP is light, which is 1/4 of that of iron. CFRP parts can save a lot of energy during operation. At the same time, it is not easy to expand and transfer heat, which can reduce the reduction of machining accuracy due to the expansion of a part of the machine caused by heating during machining. However, there are many unsolved problems in CFRP parts, such as high price and difficult combination with other materials.

2016

01/26

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