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How to Place CNC Workpieces?

How to Place CNC Workpieces?

Pulished on Aug. 16, 2019

As a company that provides OEM Brass CNC Machining Service, let's talk about how to place CNC workpieces.

1. Directly find the right method

When this method is used, the correct position that the CNC workpiece should occupy on the machine tool is obtained through a series of attempts. The specific method is to directly mount the CNC workpiece on the machine tool, and use the needle on the dial gauge or the stylus to correct the correct position of the OEM CNC Machining Parts by visual inspection.

The accuracy of the direct positioning method and the speed of the alignment are determined by the accuracy of the alignment, the alignment method, the alignment tool, and the skill level of the worker. Its shortcomings are that it takes a lot of time, has low productivity, and has to be operated by experience. It has high requirements on workers' technology, so it is only used in single-piece and small-batch production. In addition, when the positioning accuracy of the workpiece is required to be high, for example, when the error is less than 0.01-0.05 mm, it is difficult to meet the requirements by the fixture (because of manufacturing errors), the precision measuring tool has to be used, and the technical level is high. Workers use direct alignment to locate accuracy requirements.

Precision Aluminum CNC Machining Part

Precision Aluminum CNC Machining Part

2. Line drawing method

This method is a method of aligning a workpiece on a machine tool with a scriber to draw a correct line on the blank or semi-finished product. Obviously, this method requires one more scribing process. The drawn line itself has a certain width, and there is a scribe error in the scribe line. There is also an observation error when correcting the position of the CNC workpiece. Therefore, the method is mostly used for small batch production, low blank precision, and large Precision Aluminum CNC Machining Part, etc. should not be used in roughing of fixtures.

3. Using the fixture installation method

The fixture is an additional device of the machine tool. It is pre-adjusted on the machine tool relative to the position of the tool before the CNC workpiece is installed. Therefore, it is not necessary to find the positioning one by one when processing a batch of CNC workpieces. The technical requirements, which are both labor-saving and trouble-saving, are efficient positioning methods and are widely used in batch and mass production.


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