Generally, after the part processing process is developed, the tool accessories are designed according to the specific requirements of the specific process. During the development process, the possibility of realizing accessories shall be fully considered. When designing accessories, it is suggested to modify the process if necessary. The design quality of accessories is stable to ensure the quality of workpiece processing, high production efficiency, low cost, convenient chip removal, safe operation, labor saving and easy manufacturing and maintenance.

1、 Basic principles of accessory design

1. Meet the stability and stability of workpiece positioning during use;

2. There is enough load or clamping force to ensure the processing of workpieces in accessories;

3, meet the simple and fast operation in the clamping process;

4. Vulnerable parts are structures that can be quickly replaced. Fortunately, do not use other tools when conditions are sufficient.

5. Meet the requirements of repeated positioning equipment during adjustment or replacement;

6. Avoid structural complexity and cost as much as possible;

7. Try to use standard parts as constituent parts;

8. Form systematization and standardization of internal products of the company.

Basic knowledge of part design.

Excellent machine accessories meet the following basic requirements:

1. To ensure the machining accuracy of the workpiece, the key to ensure the machining accuracy is to correctly select the positioning reference, positioning method and positioning element. If necessary, positioning error analysis is also required. Also pay attention to the structure of other components in the attachment. The effect is to ensure that the equipment can meet the machining accuracy requirements of the workpiece.

2. The complexity of special accessories to improve production efficiency is compatible with the production capacity. Various fast and effective clamping mechanisms shall be used as much as possible to ensure convenient operation, shorten auxiliary time and improve production efficiency.

3. The structure tension of special accessories for processing performance is simple and reasonable, and it is easy to manufacture, assemble, adjust, inspect and maintain.

4. Good tool accessories have sufficient strength and rigidity, simple operation, labor saving and safety. Under the premise of objective conditions and economic application, mechanical pneumatic and hydraulic clamping devices shall be used as much as possible to reduce the working intensity of operators. Tool accessories are also suitable for chip removal. If necessary, the chip removal structure can be configured to prevent the chips from damaging the workpiece positioning and damaging the tools, and prevent the chips from accumulating and generating a large amount of heat, thus leading to the system deformation process.

5. Standard parts and standard structures shall be used as much as possible for high-quality and economical special accessories to make the structure simple and easy to manufacture, so as to reduce the manufacturing cost of accessories. Therefore, the necessary technical and economic analysis of accessory procedures shall be carried out according to the order order and capacity to improve the economic benefits of accessories in production.

Design standardization of tool accessories

1. Basic methods and steps of accessory design

Design raw materials of pre design accessories include:

a) Design announcements, finished product drawings, blank drawings and routes, etc., to understand the technical processing requirements of each process, positioning and clamping schemes, processing contents of previous processes, blank conditions, machine tools and tools used for processing, inspection calibrators, processing allocation and cutting quantity; b) Understand the production batch and the demand for accessories;

c) Understand the main technical parameters, performance, specification, accuracy of the machine tool used and the contact dimension with the structure of the equipment connecting part;

d) Standard stock of accessories.