Analysis and Solution of the Problem of the Planer with a Knife

1. Introduction In the maintenance of the planer and the single-arm planer, there is a common problem - with a knife. The specific performance is as follows: When the machine table starts to return after the cutting stroke is completed, the tool holder has a random and non-quantitative retraction. What is the danger of this type of failure? Set the random retraction amount to X, and the theoretical feed amount per tool holder is A, so that the actual feed amount (cutting amount) becomes AX. Since the retraction amount is variable every time the table returns (that is, X is a variable), the actual cutting amount AX is a variable, which seriously affects the surface quality and dimensional accuracy of the planing, so that the product can not meet the technical requirements, and sometimes even causes waste. . Starting from the principle of transmission, we found the real cause of the knife, and improved the structure to completely eliminate the knife failure of the above machine.

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