Auxiliary positioning structure for drilling circular truncated cone workpiece

Abstract

The invention relates to the field of machining, and discloses an auxiliary positioning structure for drilling machining of a circular truncated cone workpiece, and the positions of a leveling clamp and an equally-divided positioning assembly can be determined only by debugging the drilling position of the first workpiece. During subsequent batch machining of workpieces, drilling point positions on the workpieces do not need to be marked, after the workpieces are fixed to the first positioning head, a drill bit vertically moves downwards, first drilling machining can be conducted on the workpieces, then the positioning rod is matched with the first drilling hole of the workpieces, rotation of the workpieces is limited, and therefore circumferential positioning is conducted on the workpieces; and then the second drilling point position is rapidly determined, positioning and drilling of a plurality of hole positions are completed in sequence, multiple drilling machining can be completed through one-time disassembly and assembly of the workpiece, high efficiency and rapidness are achieved, and the time for marking the drilling point positions and the time for aligning the drilling point positions and the drill bit are saved. If drilling machining needs to be carried out on circular truncated cone workpieces with different tapers, the angle of the swing rod can be adjusted to enable the drilling face to be leveled, and drilling machining is carried out.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to an auxiliary positioning structure for drilling a circular table workpiece. Background technique [0002] The handle turntable is an indispensable part of many machine tools. In one of the processing steps of the handle turntable, the workpiece is in the shape of a circular platform, and a center hole is opened in the middle of the workpiece. It is necessary to drill and tap the tapered surface of the workpiece. The direction of extension is perpendicular to the inclination of the tapered surface. In the initial processing and manufacturing, due to the small number of handle turntables to be processed, there is no special fixture to clamp the workpiece. We can only draw the points that need to be drilled on each workpiece in advance, and then use the flat pliers to vertically clamp the workpiece. It is fixed directly on the milling machine, and then tilted to correct the ang...

AI Technical Summary

Problems solved by technology

In the initial processing and manufacturing, due to the small number of handle turntables to be processed, there is no special fixture to clamp the workpiece. We can only draw the points that need to be drilled on each workpiece in advance, and then use the flat pliers to vertically clamp the workpiece. It is directly fixed on the milling machine, and then the angle of the drill bit is corrected by tilting, so that the taper surface of the drill bit and the workpiece are perpendicular to each other. The operation of the whole machining process is quite cumbersome, the machining efficiency is low, and it is difficult to ensure the machining quality of the workpiece.

Moreover, the number of handle turntables to be processed in the later stage will increase. If the above-mentioned processing method is continued, it will be difficult to improve processing efficiency and processing accuracy.

In addition, the number of drilled holes on the handle turntable of some specifications is equal to or more than two, and the drilled holes are equiangularly distributed around the tapered surface of the workpiece. Not only each workpiece needs to mark all the drilled holes on the workpiece with the assistance of the indexer point, it takes a lot of time to align the drill bit with the drilling point, the operation is cumbersome, it is difficult to improve the processing efficiency, and it is not suitable for rapid processing of batch workpieces

Images