A kind of step deep hole built-in guide sleeve and its manufacturing method
A manufacturing method and technology of guide sleeves, which are applied in the direction of manufacturing tools, boring/drilling, drilling/drilling equipment, etc., can solve problems such as difficult cleaning, small holes that cannot be processed, and blade breakage, so as to improve efficiency and ensure Dimensional accuracy requirements, the effect of quick disassembly
Active Publication Date: 2021-03-26
XIAN FLIGHT SELF CONTROL INST OF AVIC
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Problems solved by technology
[0002] Parts with multi-step deep holes are widely used in aviation airborne products, because of the small difference in the diameter of the steps, if the existing technology is used to drill small holes first and then drill large holes, it is a hole reaming process when drilling large holes. The margin is small, and band-shaped iron filings will be produced during processing. This iron filings are not easy to break, and will enter the oil outlet of the machine tool along the chip removal groove of the gun drill, and wrap around the tool rod at this position. The deeper the hole, the more The more it is, the harder it is to clean, and it is easy to cause the blade to break
Another method is to drill the large hole first and then drill the small hole. This method will not produce banded iron filings, but the small hole cannot be processed because the tool has no support point.
Method used
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Embodiment
[0037] The inventive idea of this processing method is based on the built-in guide sleeve in the step deep hole, and realizes the processing method of processing the large hole first and then processing the small hole:
[0038] A certain type of product has a large hole of Φ16 and a depth of 265, and a small hole of Φ13 and a depth of 8. After the large hole is processed, the small hole cannot be processed, so that this batch of parts cannot be used. Through the use of the present invention, this problem is effectively solved. problem, and the efficiency is more than doubled, and the surface quality of the inner hole is also improved.
[0039] The method implementation steps are as follows:
[0040] 1. Process the large hole of the part to size;
[0041] 2. Place the built-in guide sleeve in the deep hole of the step at the bottom of the large hole to install and lock it;
[0042] 3. Quickly move the tool for processing small holes to the position close to the built-in gui...
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Abstract
The invention belongs to the technical field of deep hole machining, and discloses a guiding sleeve arranged in a step deep hole, and a manufacturing method thereof. The guiding sleeve comprises an elastic positioning sleeve (1) and a self-locking guiding sleeve (2). The guiding sleeve is a guiding tool arranged in the hole, machining limitation of a composite gun drill can be avoided, the machining problem of multi-step deep hole parts is tackled, a cutter can be effectively positioned through the structure, a machining method that a large hole is drilled first, and then a small hole is drilled is achieved, winding of strip-shaped iron scraps is avoided, the dimensional accuracy requirements are met, meanwhile, the functions of rapid disassembly and assembly are achieved, and the efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of deep hole processing, and in particular relates to a built-in guide sleeve for stepped deep holes and a manufacturing method thereof. Background technique [0002] Multi-step deep hole parts are widely used in aviation airborne products, because of the small step hole diameter difference, if the existing technology is used to drill small holes first and then drill large holes, it is a hole reaming process when drilling large holes. The margin is small, and band-shaped iron chips will be produced during processing. This kind of iron chips is not easy to break, and will enter the oil outlet of the machine tool along the chip removal groove of the gun drill, and wrap around the tool rod at this position. The deeper the hole, the more The more it is, the harder it is to clean, and it is easy to cause the blade to break. Another method is to drill large holes first and then drill small holes. This method will...
Claims
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IPC IPC(8): B23B47/00B23B41/00
CPCB23B41/00B23B47/00
Inventor 周盈斌路超凡欧立松陈宏超张毓
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC