Special fixture for welded parts of turntables

Abstract

The invention discloses a special fixture for welded parts of turntables. The special fixture comprises a worktable and a base 1, the base 1 is connected with the worktable, an X-axial positioning device, a Y-axial positioning device and a Z-axial positioning device are arranged on the base, the X-axial positioning device consists of a positioning dimension adjusting component, and positioning dimensions of the X-axial positioning device are adjusted by the aid of the positioning dimension adjusting component of the X-axial positioning device within a preset range. The special fixture has the advantages that a workpiece without a specific reference surface or a specific reference hole can be automatically machined, alignment of the workpiece can be quickly completed without machine tool resources, an adjusting process is simple and convenient, time and labor are saved, the workpiece can be clamped without the aid of the worktable, the machine tool resources are saved, the fixture can be used for machining turntable parts of different specifications, the problem that one fixture only can be used for machining turntable workpieces in one specification is solved, and cost is saved.

Description

technical field [0001] The invention relates to a fixture, in particular to a special fixture for welding body parts with a turntable. Background technique [0002] In the metal parts processing technology, milling, drilling and boring processes generally require the workpiece to be processed to be clamped and fixed on the workbench, and the clamping and fixing is generally realized by a fixture. Due to the structural characteristics of the truck crane, there are many types of welded parts on the turntable. Such workpieces are not only large in size but also complex in shape. It is difficult to clamp and fix them with general fixtures. Moreover, due to the large welding deformation of the turntable welding body parts, there is no clear reference plane or reference hole for this type of workpiece. The use of existing fixtures for clamping and fixing requires tool alignment for the workpiece to be processed before each processing. The alignment process needs to be repeated, r...

AI Technical Summary

Problems solved by technology

Due to the structural characteristics of the truck crane, there are many types of welded parts on the turntable. This type of workpiece is not only large in size, but also has a complicated shape. It is difficult to clamp and fix it with general fixtures.

Moreover, due to the large welding deformation of the turntable welding body parts, there is no clear reference plane or reference hole for this type of workpiece. The use of existing fixtures for clamping and fixing requires tool alignment for the workpiece to be processed before each processing. The alignment process needs to be repeated, resulting in long clamping time, low processing efficiency, and serious waste of resources

[0003] Moreover, the milling and drilling of the thin-walled part of the workpiece is involved in the processing of the turntable welding body parts, and the general fixture is not easy to clamp

The existing technical solutions are generally realized by a set of special fixtures for each specification of the workpiece, resulting in low versatility between the fixtures, and the processing plant has to store a large number of fixtures corresponding to different parts, which not only takes up a lot of storage space but also requires a lot of manpower Material resources are required for maintenance, and it is also very inconvenient to use

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