Hard broaching finish machining process for surface of internal keyway and device
An internal keyway and equipment technology, which is applied to metal processing equipment, broaching machines, broaches, etc., can solve the problems of fast and efficient finishing methods for internal keyways that have not been reported, and achieve low cost, low energy consumption, and improved stress. the effect of the situation
Inactive Publication Date: 2014-04-30
尹时中
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Problems solved by technology
At present, there are no other fast and efficient finishing methods for internal keyways reported in the industry
Method used
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Embodiment 1
[0027] Referring to the accompanying drawings, the present invention is a hard broaching and finishing equipment for internal keyway surface, which includes a bed 1, a workbench 2, a workbench driving device 3, a tool 4, an upper tool holder 5, a lower tool holder 6, and a guiding and positioning device 7 , tool driving device 8, the workbench 2 is installed on the guide track 9 on the bed 1, driven by the workbench drive device 3 to move along the guide track 9; above and below the workbench 2 On the bed 1 of the bed, an upper tool seat 5 and a lower tool seat 6 are respectively arranged, and the upper tool seat 5 and the lower tool seat 6 are coaxially installed; the two ends of the tool 4 are respectively fixed on the upper tool seat 5 , in the lower tool seat 6; the bed 1 is also provided with a tool driving device 8 that drives the upper tool seat 5 to move axially and linearly; A fixture 10 for processing workpieces and a guiding and positioning device 7 for axially fixi...
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The invention relates to a hard broaching finish machining process for a surface of an internal keyway. The internal keyway of a part is sleeved at one end of a cutter which is same with the internal keyway in shape to fix both ends of the cutter so that the part moves along the cutter axially at a speed of 4-10m / s. During movement, deviation of the center of the internal keyway in the part and the axis of the cutter is maintained smaller than or equal to 0.01mm. The cutter is of a sectionally differential stepped structure. The blade hardness is greater than or equal to HRC67. The invention further provides a hard broaching finish machining device for the surface of the internal keyway. Both ends of the cutter are respectively fixed on an upper tool apron and a lower tool apron which are located above and below a work table and installed coaxially. A work table drive device drives the work table to move along a guide rail on a machine tool body to realize high speed machining of an internal spline of a workpiece to be machined. The hard broaching finish machining process for the surface of the internal keyway and the device provided by the invention are simple in process method and reasonable in structure of the device, and has high machining precision and efficiency for internal keyways, and low cost and energy consumption, and industrialized production can be realized in a large scale.
Description
technical field [0001] The invention discloses a hard broaching finishing process and equipment for the surface of an inner keyway, belonging to the technical field of mechanical processing. Background technique [0002] After rough machining, high-end mechanical parts need heat treatment to improve their overall performance and service life; after heat treatment, the parts are subjected to fine turning, fine milling or grinding to make the parts meet the design standard requirements. For the internal keyway, after heat treatment, because the hardness of the part is too high, usually reaching HRC50, it can only be ground. The traditional method of grinding the inner keyway is to use a grinding tool with the same shape as the inner keyway to be processed, reciprocate along the axial direction of the inner keyway, and grind the inner surface of the inner keyway so that the size of the inner keyway meets Design requirements. This processing method has very low efficiency and ...
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IPC IPC(8): B23D37/10B23D41/06B23D43/02
Inventor 尹时中
Owner 尹时中