How to judge the strength of non-standard parts processing manufacturers?

Non-standard parts are mainly the state did not set out strict standard specifications, there is no relevant parameters outside the provisions of the free control of other accessories by the enterprise. Non-standard parts have many varieties, there is no very standardized classification. Roughly categorized as follows:

Metal non-standard parts:

Provided by the customer drawings, manufacturers use the equipment according to the drawings to produce the corresponding products, usually molds are mostly, tolerance requirements, finish are customer-specified, there is no certain paradigm. Products from casting to finishing completely need corresponding quality control, process complexity and variability, the general cost is higher than the standard parts.

Non-metallic non-standard parts:

The processing of some non-metallic materials. Such as plastics, wood, stone, etc. In recent years, the injection molding industry, the development of plastic mold is increasingly sophisticated, surface design, programming CNC references, so that the cost of non-standard processing and tolerance levels have been greatly improved.

Machining is the process of changing the dimensions or properties of a workpiece through a mechanical device. According to the difference in processing methods can be divided into cutting and pressure processing. In the production process, where the shape, size, location and nature of the production object is changed to make it a finished or semi-finished product is called the process. It is the main part of the production process. Process can be divided into casting, forging, stamping, welding, machining, assembly and other processes, mechanical manufacturing process generally refers to the parts of the machining process and the assembly process of the machine the sum of the process, the other process is known as the auxiliary process, such as transportation, storage, power supply, equipment maintenance and so on. The process is composed of one or several sequential processes, a process consists of a number of steps.

Machining process is a workpiece or part of the manufacturing process steps, the use of machining methods, directly change the shape of the blank, size and surface quality, etc., so that it becomes a part of the process is called machining process. For example, an ordinary part of the machining process is roughing-finishing-assembly-inspection-packaging, is a generalized process of machining.

Machining process is based on the process, change the shape, size, relative position and nature of the production object, so that it becomes a finished or semi-finished product, is a detailed description of each step, each process, for example, the above, roughing may include blank manufacturing, grinding, etc., finishing may be divided into the car, clamping, milling, and so on, each step will have detailed data, such as how much roughness to achieve, tolerances, and so on. For example, the roughness to achieve how much, how much tolerance to achieve.