Quality appraisal of fine boring machine

fine boring machine is a machine tool used to process various complex inner hole workpieces, which can achieve high-precision and high-efficiency machining processes. Fine boring machines are widely used in mechanical processing, automobile manufacturing, aerospace, mold manufacturing and other fields. For example, fine boring machines can be used to produce engine cylinder liners, turbine blades and exhaust pipes for aircraft engines, automotive brake and clutch components, injection nozzles for molds, extrusion dies, and more.
In the case of fine boring machine quality appraisal, Zhongke Testing can provide fine boring machine quality appraisal services.

1. CNC boring machine
CNC boring machine is one of the most commonly used types of precision boring machine tools. It has the advantages of high precision, high efficiency and stability, and is widely used in various precision machining tasks. CNC boring machines can automatically control the processing process, making the processing more precise and reliable.
2. Optical boring machine
Optical boring machine is another commonly used type of precision boring machine tool, mainly used for processing optical components and precision tools. Its advantage is that it can perform high-resolution measurement and adaptive control during the machining process, thereby achieving high-precision and high-quality machining.
3. Ordinary boring machine
Ordinary boring machine is a traditional mechanical boring machine, mainly used for general workpiece processing. Compared with CNC boring machines and optical boring machines, its accuracy may be slightly lower, but due to its simple structure and low maintenance costs, it still has its application space.

JB/T 5564.3-2021 Horizontal fine boring machine Part 3: Technical conditions
JB/T 5564.2-2021 Horizontal fine boring machine Part 2: Accuracy inspection
JB/T 5564.1-2021 Horizontal fine boring machine Part 1: Type and parameters
JB/T 12395-2015 Fine boring head
JB/T 4289.5-2014 Vertical fine boring machine Part 5: Boring head
JB/T 9884-2013 Combined machine tool Fine boring head Accuracy inspection
JB/T 4289.4-2013 Vertical fine boring machine Part 4: Boring head type and parameters
JB/T 4289.3-2013 Vertical fine boring machine Part 3: Type and parameters
JB/T 9900.2-1999 Horizontal fine boring machine Boring head Technical conditions
JB/T 4289.2-2006 Vertical fine boring machine Part 2: Technical conditions
0JB/T 4289.1-2006 Vertical fine boring machine Part 1: Accuracy inspection
1JB/T 9900.1-1999 Horizontal fine boring machine Boring head accuracy inspection
2JB 5564-1991 Horizontal precision boring machine accuracy
3

The buyer purchased a set of fine boring machines for processing the left and right crankcases.
The supplier sued the court on the grounds that the demand side was in arrears with the balance payment for the equipment. The demand side proposed to appraise the quality of the equipment involved on the grounds that the equipment had not passed the demand side's acceptance and the quality status was unknown.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the fine boring machine involved in the case.
appraisal analysis results:
appraisal experts observed and recorded the operational stability of the equipment involved on site. Randomly sample each workpiece after processing, and seal the above samples and send them to the testing department for testing. After comprehensive technical analysis, the following suggestions and conclusions are made:
There is a systematic deviation in the relative position of the left A spindle transmission box and the left B spindle transmission box of the fine boring machine involved, causing the center distance of the four holes on the front side of the left crankcase sample to exceed the accuracy requirements of the drawing;
The fine boring machine involved in the case cannot operate because the right A-axis spindle transmission box cannot operate, and the supplier and the buyer are unable to provide special inspection rods for the "fine boring machine" involved. Therefore, it is impossible to verify whether the radial runout of the proximal end of the spindle of the right A-axis and the radial runout of the four sets of spindles at a distance of 200mm from the end face of the spindle meet the requirements of the technical agreement.