Plastic molds are closely related in the process of design and manufacturing and plastic processing. The success and failure of plastic processing lies in the effect of mold design and mold manufacturing quality, and the design of plastic molds is based on correct plastic product design. What structures must be considered in the design of plastic …

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1. Basic concept: Linear bearing is a linear motion system with high precision, low cost and low friction resistance. Linear bearings are used in combination with guide shafts, and use the rolling motion of balls to achieve infinite linear motion. Since the bearing ball is in point contact with the shaft, the load is small. …

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(1) For pulleys with parallel drive shafts, the tolerance of the parallelism of the two axes is (0.15/1000)L (L——the center distance between the two shafts), the wheel width middle plane of the two wheels should be on the same plane, and the tolerance is 0.5mm. (2) The geometric center lines of the gear teeth of …

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Vibration barriers refer to problems caused by vibration during processing, inspection, and measurement. Vibration obstacles will have a significant impact on machining accuracy, quality, and inspection results, so it is necessary to select and implement appropriate vibration elimination and anti-vibration products. The main vibration obstacles are as follows.

1. Turning tool Generally uses the following types of turning tool tip: (1) Rough turning tool: It is mainly used to cut a large number of excess parts to make the diameter of the workpiece close to the required size. When rough turning, the surface finish is not important, so the tip of the turning …

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Refers to the ability of a material to resist local deformation, especially plastic deformation, indentation or scratches. It is a measure of material softness and hardness.

In the cutting process, the thin wall is easily deformed by the cutting force, which leads to an oval or a “waist shape” with a small middle and large ends. 

There are many reasons for the deformation of aluminum parts, which are related to the material, the shape of the parts, and the production conditions.

A set of reliable plastic mold design is mainly reflected in the quality of the molded plastic products (appearance quality and dimensional stability), convenient, rapid, and concise processing and manufacturing, which saves money and manpower, and leaves room for correction and improvement.

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The task of mechanical structure design is to draw a specific structure diagram based on the design task on the basis of the overall design conception, and to draw a specific structure diagram to achieve the functions required by the design.