Machining method for straight bevel gear
A processing method and gear technology, which is applied in the field of gear processing, can solve the problems of inconsistent tooth profile curves and unguaranteed working tooth surfaces, etc., and achieve the effects of stress deformation and power consumption, reduced machine tool height and fast composition
Inactive Publication Date: 2014-09-03
查济瑞
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[0005] However, the main deficiency in this patent is that the correct working tooth surface is not guaranteed, and the tooth profile curve obtained by this method does not meet the requirements of the reference tooth profile based on the involute characteristics, but belongs to the Aki Mead spiral type of curve
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[0027] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.
[0028] The present invention adopts wire electric discharge cutting equipment to select upper and lower two wire feeding heads, which can respectively realize two-dimensional numerical control tracking; the cutting work process is changed to the forming method of cutting wire tracking preset path; A device such as an indexing head or an indexing turntable that clamps and adjusts the position of the workpiece and performs indexing in the cutting gap.
[0029] see figure 1 As shown, it is a schematic diagram of equipment configuration and processing of the present invention; the processing equipment includes 1, in this embodiment it is a vertical electric discharge wire with double wire feeding heads that can be independently regulated, and can process straight-grained tapered surfaces Cutting machine tool;...
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The invention relates to a machining method for a straight bevel gear. According to the machining method, wire cut electrical discharge machining equipment is adopted, an upper wire feed head and a lower wire feed head are used, bidimensional numerical control tracking is realized, and in the cutting process, a forming process in which a cutting wire tracks a preset route is adopted. The machining method comprises the steps of setting the oblique position of a workpiece axis according to the pitch angle delta of a workpiece; regulating the height of the two wire feed heads; regulating the positions of the two wire feed heads in the respective horizontal planes in a linkage manner, so as to coincide with the vertical pitch cone generatrix; tracking the drawing of the curve by the two wire feed heads; and starting cutting to finish gear machining. The machining method avoids using expensive internal mechanisms and matched tools of a gear cutting machine tool, thus being fast in assembling and less in investment; furthermore, a transplant manner is fully used for determining a scheme; contact is avoided in machining, and deformation caused by stress and power consumption are small, so that the cutting wires of the tool are easily available and convenient to use and maintain.
Description
technical field [0001] The invention relates to the field of gear processing, in particular to a new processing method for digitally controlled electric discharge wire cutting straight bevel gears. Background technique [0002] A straight bevel gear, or simply a straight bevel gear, is a commonly used mechanical transmission pair used to transmit rotation between two intersecting shafts. As a space meshing pair of straight bevel gear pair, its basic transmission relationship comes from the relative rolling between a pair of pitch cones, thus forming an involute tooth profile curve on the spherical surface that causes the two tooth surfaces to contact each other . This curve is connected with the apex of the cone with a straight line, and the formed straight-grained conical surface is the theoretical working tooth surface of the straight bevel gear. Since the spherical involute cannot be expanded into a plane curve, it is impossible to directly borrow the theoretical analys...
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IPC IPC(8): B23H7/02B23H7/26B23H9/00
Inventor 查济瑞
Owner 查济瑞