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M1-6
Grinding wheel dressing
Model: M1-6
Introduction:
In the gear machining, honing process has traditionally been considered only a kind of hardened gear surface finishing methods, mainly used to improve tooth surface finish. But in recent years in Switzerland, Germany and other industrialized countries, the use of high-precision diamond dressing gear wheel of the grinding wheel for precise modification, so that honing accuracy greatly improved, thereby honing process is widely used in hard surface The ultimate gear finishing processes. While honing process with high efficiency, low cost, machine structure is simple, convenient operation, etc., but in our finishing of hardened gears is not yet universal. Based on the analysis of diamond dressing gear wheel internal and external grinding wheel dressing mechanism, based on a self-made diamond dressing wheel dressing and honing test achieved good results.  

 
Detailed description:

    Diamond grinding wheel dressing is a kind of gear-tooth-shaped steel substrate surface coated particles made of a layer of high-precision diamond dressing tools that can be used for grinding wheel, grinding wheels, precision gear grinding tool modification It is a variety of high precision and complex-type surface dressing wheel in the manufacture of superhard the most difficult one of its manufacturing error will be passed through the secondary processing, and zoom into the workpiece. Gear-type diamond internal grinding wheel dressing wheel dressing exactly the same way as the workpiece processing methods, but with the dressing wheel instead of the workpiece, while honing wheel and gear tooth root to finishing, finishing time and honing the same as the workpiece , honing wheel speed lower than the processing speed and volume of each dressing 0.01 ~ 0.05mm, after honing wheel trimmed obtain better precision and self-sharpening.

 

    The modification method of engagement principle for the involute surface enveloping principle, that is, dressing wheel tooth surface as the mother of the involute surface dressing (the envelope) a honing wheel tooth surface, and then honing wheel tooth surface processing (envelope) out of the workpiece tooth surface. Xiu-shaped envelope for the first time, processing for the second envelope. According to theoretical analysis of meshing gears can see, modification and processing of the contact between the tooth surface for line contact, rather than point-contact helical gear drive will enable the cutting forces are more evenly distributed; the second envelope, the grinding wheel and workpiece between the for two-way contact, the first line of contact for the first enveloping contact line when the complex is (known as the original contact line), the second line of contact is due to dressing the surface of teeth meshing zone in contact with various points of the secondary role of formed (called a new contact line), two communities cross the line of contact on the first envelope (dressing) of the meshing boundary line. Honing process, require the processing of a tooth surface of the workpiece for the modification of involute surface replication round face, so there should not be a new line of contact, that is, dressing meshing boundary line should be excluded from the tooth surface modification, the This can be by adjusting the modification and processing of the Σ-axis inclination to achieve.

 

    Honing process can be divided into two cases: ① the transmission ratio and center distance and dressing the same time, he incurs the workpiece and the dressing wheel Heng basic geometric parameters (including teeth) unanimously; ② gear ratio and center distance and the modification time different, he incurs Heng workpiece with a different number of teeth dressing wheel. In the first case, the workpiece tooth surface, after excluding the new line of contact should be revised copy of tooth-shaped roller surface, so in theory would receive the full accuracy of the tooth; in the second case, the dressing wheel and being Hang the workpiece teeth generally little difference between the two shaft machining the shortest distance (ie, center distance) and the modification time is slightly different, so the workpiece out of the second envelope will no longer be divided into the original tooth surface contact area and the new contact surface. Because of this process is even more common, it can increase the dressing wheel and the honing wheel versatility and reduce the number of wheel dressing. When the need for trial cutting process in order to determine whether to meet the machining precision.


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