Flat-cup non-slip bolt bar knurling and thread rolling device

Abstract

The invention discloses a knurling and thread-rolling device for the shank of a flat cup anti-slip bolt. The fixed die knurling plate is fixed directly above the fixed die rubbing plate, and there are rubbing patterns on the opposite side walls of the movable die rubbing plate and the fixed die rubbing plate, respectively. Knurling patterns are respectively formed on the side walls of the movable die rubbing plate and the moving die knurling plate can reciprocally slide the mold relative to the fixed die rubbing plate and the fixed die knurling plate along the extending direction of the rubbing pattern, and the fixed die knurling plate The side wall facing the knurled plate side of the movable die is located at one end of the bolt feeding direction, and a first avoidance gap of a set length is set, and the side wall of the knurled plate of the movable die facing the knurled plate side of the fixed die is located at the end of the bolt discharging direction. One end is provided with a second avoidance gap with a set length. The present invention realizes simultaneous completion of tooth rubbing and knurling of flat cup bolts, high processing efficiency, low processing cost, and high precision of thread rubbing and knurling.

Description

technical field [0001] The invention relates to the technical field of screw processing, in particular to a knurling and thread rolling device for the shank of a flat-cup anti-slip bolt. Background technique [0002] When the flat cup bolts are rubbed and knurled, the flat cup bolts are transported to the tooth rubbing plate through the conveyor belt. Because the flat cup bolts have a taper, if the machine is not adjusted properly, the rubbing teeth will be crooked, and the knurling of the rod will also be crooked. It is easy to be rolled and skewed, and the knurling of the rod part and the forming of the tooth part must be completed in two processes, which is time-consuming, labor-intensive, low in efficiency, low in machining accuracy, prone to scrapped products, and requires storage of intermediate products, which takes up storage space. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a knurling and thr...

AI Technical Summary

Problems solved by technology

[0002] When the flat cup bolts are rubbed and knurled, the flat cup bolts are transported to the tooth rubbing plate through the conveyor belt. Because the flat cup bolts have a taper, if the machine is not adjusted properly, the rubbing teeth will be crooked, and the knurling of the rod will also be crooked. It is easy to be rolled and skewed, and the knurling of the rod part and the forming of the tooth part must be completed in two processes, which is time-consuming, laborious, low in efficiency, low in processing accuracy, prone to scrapped products, and intermediate products need to be stored, which takes up storage space

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