Model knife positioning techniques

Model knife is in use around the Figure 2 to pin 2 in the rotation, if the model is not accurate positioning of a knife, two corner pins in the base if the error of 0.1 °, then at its end there will be L × tan0.1 ( L is the length of the blade model) error, L the larger the value, the greater the error. Therefore, the level of positioning accuracy of a model knife was seized with one of the design problem solved. To solve this problem we use the most basic principles of three-point positioning, specific practices are as follows:

① using positioning plate 3 and pin 1 position, rotate, add thread to step up pin 2.

② The positioning plate 3 and the pin 2 position, pin 2 to step up. At this point omitted pin 1, but the pin 2 has been improved, that is selling 2 作成 1: 50 of the taper bolt (Figure 3), not only to intensify the role of starting position was underway.

In this note the location of the positioning plate cutter according to model the shape of a reasonable arrangement can be shown to the right in Figure 2 can also be arranged on the left or below.

In short, easy to operate in the design and manufacture, testing a special inspection with high precision, we have to seize the key-shaped surface of the workpiece detection accuracy of this breakthrough model of a knife, have constant innovation and improvement, and strive to improve model accuracy and positioning the production of a knife accuracy, this train of thought and direction should be right. This article is the author of On the teaching and practice has accumulated a little summary of skills, hoping to serve as a catalyst to facilitate the emergence of more outstanding design.