Common processing methods for non-standard parts

 Common processing methods for non-standard parts

1. CNC machining. Numerical control machining refers to the use of computer programs to control machine tools, cutting tools and other equipment to complete various shapes of processing operations. CNC machining can meet the needs of various forms of processing, including the processing of non-standard parts.
2. Wire cutting. Wire cutting refers to the use of computer-controlled wire cutting equipment to cut the conductive wire into a variety of shapes to form the required non-standard part shape. Wire cutting can quickly and efficiently process non-standard parts of various shapes, but it is necessary to pay attention to the cutting speed and cutting depth of wire cutting.
3. Laser cutting. Laser cutting refers to the use of laser beams to cut metal materials. Laser cutting speed is fast, cutting surface finish is high, but it is necessary to pay attention to the cutting depth and material selection of laser cutting.

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Non-standard parts processing process detailed explanation

 

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The general process flow of non-standard parts processing

1. Design drawings. First of all, we need to confirm the graphics and dimensions of non-standard parts, and produce detailed design drawings.

2. Select the processing method. Determine the equipment and tools required for processing, and select the appropriate processing method.

3. Program writing. For automatic processing equipment such as CNC machining, it is necessary to write processing programs.

4. Device commissioning. Debug the equipment to ensure working accuracy and efficiency.

5. Workpiece positioning. For large non-standard parts, special positioning devices need to be developed to ensure the positioning of the workpiece.

6. Processing. Enter the processing link.

7. Check. Check the finished non-standard parts.

8. Trim. For non-standard parts that require high hardness and surface quality, grinding is also required.

9. Cleaning, packaging and storage. Cleaning, packaging and storage of processed non-standard parts.

Why is precision parts processing so strict?

 

Precision parts processing is mainly standard requirements, such as how much the diameter of the cylinder is, there are serious requirements, positive and negative faults in the rule requirements planning is qualified parts, otherwise are unqualified parts; Precision parts processing length, width and height also have specific severe requirements, positive and negative faults have the same rules, such as an embedded cylinder, assuming that the diameter is too large, across the fault tolerance planning, it will constitute, can not be inserted into the situation, assuming that the practice diameter is too small, across the fault tolerance of the negative lower limit, it will constitute inserted too loose, not healthy problem.

Precision mold parts machining Control standards for part accuracy

It is necessary for us to have a plan for the deepening impact of some unique environments, for example, products such as the measuring scale we do need to have a specific rule at the time of processing, and the error presented is necessary to be within a certain scale.

CNC precision mold parts processing in the structure should be as far as possible to choose the parts and components that have been mastered and produced, especially as far as possible to choose standard parts. In the same structure, try to choose the same parts. Should make the parts have interchangeability, in the case of high precision requirements, can be designed with adjustment links, as far as possible do not choose to select assembly.

CNC precision mold parts machining is easy to manufacture blanks. Blank manufacturing methods include casting, forging and welding, etc., which should be selected according to the application requirements of mechanical parts, production batches and specific manufacturing conditions. Convenient for clamping operation; Reduce processing area as much as possible; Try to choose standard tools and reduce the types of tools; Easy tool entry and exit; Reasonable selection of dimensional tolerances and surface roughness of parts.

Punch and dies product height NG problem and causes

 Punch and dies product height NG reasons:

– The closing height of the die is less than the closing height of the punch;
– The height of the limited height of the mold is greater than the height of the product;
– Hold time setting is too short;
– Hydraulic press tonnage selection is too small, punch stroke is small;
– The stroke switch position of the hydraulic press is set too high, and the pressure is set too small;
– Hydraulic system failure, the pressure is not up to enough strength.
Recommended handling method:
– Thickening the die pad, the die closing height is greater than the closing height of the punch, and then adjust the stroke switch position;
– Reduce the mold height limit pad to the required height of the product;
– Adjust the holding time according to product plasticity requirements;
– Choose hydraulic presses with larger tonnage and stroke;
– Adjust the switch and pressure of the fast stroke of the hydraulic press as required;
– Clean the filter screen of the hydraulic pump inlet, add hydraulic oil to the standard level, repair or replace the hydraulic pump.