What are the placement methods for hardware parts processing? In order to process a surface that meets the requirements on a certain part of the processing of hardware parts, before machining, the hardware processing machine must be used to occupy a certain correct position relative to the tool. This process is usually called the part Positioning, after the hardware parts are positioned, because they will be affected by the cutting force and gravity during processing, it is necessary to use a certain mechanism to clamp the parts so that they remain unchanged at a certain position. The parts are from positioning to clamping. This process is collectively referred to as installation. Below, what are the ways to place hardware components?
How to place hardware parts
The placement of hardware parts is a very important part of mold processing, which will directly affect the final processing accuracy, product clamping speed and clamping stability, and it will also affect the overall production efficiency , In order to ensure the relative position accuracy between the machined surface and the design datum, the hardware parts need to use the machined surface datum to occupy the correct position relative to the equipment when installing, and the parts need to be installed with the design datum and the spindle of the machine tool. The shaft core line coincides;
When processing parts on different hardware processing machine tools, there are many different placement methods. The placement methods can be mainly summarized into three types: alignment method, line alignment method, and fixture installation:
1. Find the right method directly
When using this method, the hardware processing parts occupy the correct position on the equipment, which is obtained through a series of attempts. The specific method is to directly clamp the hardware parts on the machine tool and use a dial indicator or It is the marking needle on the dial, the correct position of the parts is corrected by visual inspection, and the correction is made while checking, until it meets the requirements;
The positioning accuracy and the speed of the direct alignment method depend on the alignment accuracy and the alignment method, the alignment tools and the technical level of the actual operators. The disadvantages are that it takes a lot of time and the production efficiency is low. And many operations need to rely on experience, and the requirements for operators will be relatively high. Therefore, it is generally used in single-piece, prototype or small-batch production, and when there are relatively high requirements for the positioning accuracy of parts, For example, when the accuracy of the error is only allowed to be 0.01~0.03mm, it is difficult to use fixtures to meet the requirements. Therefore, it is necessary to use precision measuring tools, and it is also necessary to use the direct alignment method by a relatively high-level operator. To position to achieve the accuracy requirements of the product;
2. Straightening method
This method is to use a scribing needle on the equipment to locate the hardware according to the line drawn on the blank or semi-finished product, so that it can get the correct position. Obviously, this method requires one more scribing process. The line itself has a certain width, and there will be errors when scribing. When correcting the position of the hardware processing parts, you need to observe the errors. Therefore, this method is more suitable for small production batches, low roughness accuracy and large processing In the rough machining process of hardware parts inconvenient to use fixtures;
3. Using fixtures
The fixture is an additional device of the hardware processing equipment. The position of the tool relative to the tool on the equipment has been adjusted in advance before the hardware processing part is installed. Therefore, it is no longer necessary to align the positioning one by one when processing batches of parts. It can ensure the technical requirements of processing, is convenient and saves trouble, can effectively improve the efficiency of positioning, and is more suitable for large-volume metal parts processing;
The above is how the metal processing parts are placed.