A processing method of throttle groove with gradual cross section
A processing method and throttle groove technology, applied in the field of mechanical processing, can solve problems such as difficult processing and easy breakage of forming knives, and achieve the effects of avoiding remelting layers, reducing tool loss, and accurate processing
Active Publication Date: 2021-12-21
AECC AVIATION POWER CO LTD
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Problems solved by technology
[0004] Aiming at the problems of difficult processing and easy breakage of forming knives in the processing of throttling grooves in the prior art, the present invention provides a processing method of throttling grooves with gradual cross-sections to realize fast and efficient processing of throttling grooves with gradual cross-sections
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.
[0036] participate Figure 4 and 5 , a method for processing a throttle groove with a gradual cross section, comprising the following steps:
[0037] Step 1. Compile the numerical control machining program of the straight section of the throttling groove;
[0038] Step 2. Determine the maximum swing angle of the profile milling cutter according to the starting point and end point of the arc of the throttle groove, that is, the maximum value during the change of the angle between the profile milling cutter and the vertical direction, which can also be understood as the arc of the throttle groove The angle between the start point and the end point of the segment.
[0039] Step 3. Divide the arc segment of the throttling groove into several small arc segments of equal length, and all the...
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The invention discloses a processing method for a throttling groove with a gradual cross section. According to the cross-sectional size of the throttling groove, the formed milling cutter is processed, and then the part is horizontally clamped on a 5-axis machining center, and a numerical control machining macro program is compiled to carry out the process. Processing of throttle groove. Among them, the CNC machining macro program uses the angle between the tool and the vertical direction as the independent variable, uses the trigonometric function relationship, and then calculates the tool tip coordinates, and uses the tool tip coordinates as the dependent variable. Divide the arc segment of the throttling groove into N small line segments, and adjust the angle of the tool every time a line segment is processed, so as to always coincide with the throttling groove at this point, thereby realizing accurate machining of the throttling groove. When machining throttle grooves with gradually changing cross-sectional areas, milling cutters and 5-axis machining centers can be used to achieve accurate machining, which effectively avoids the remelting layer produced after electrical machining, reduces tool loss, and improves machining efficiency.
Description
technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a processing method for a throttle groove with a gradually changing section. Background technique [0002] At present, in order to change the fluid flow rate in some products, a throttling groove with simple structure is often used. The cross-section of the throttling groove is in a "V" shape, and when the fluid passes through the V-shaped groove, the purpose of controlling the change of the fluid flow is achieved. Its structure is as figure 1 and 2 As shown, the axial sectional plane is composed of a straight line segment and a gradually deformed arc R, and its cross-sectional area gradually changes along the path at the axial arc. The closer to the straight line segment, the larger the cross-sectional area, and vice versa. until it is 0. At present, such V-shaped groove processing methods can be mainly divided into two types: electrical processing and mechanic...
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IPC IPC(8): B23C3/28
CPCB23C3/28
Inventor 董少锋韩新艳朱阳席丽娜许斌裴艳军智勇侯林郁
Owner AECC AVIATION POWER CO LTD