Multi-station vertical machining center four-axis hydraulic clamp

Abstract

The invention discloses a multi-station vertical machining center four-axis hydraulic clamp which comprises a rotary working table mounted on a machine tool working table, wherein positioning and clamping components and pre-positioning components are mounted on the rotary working table; and one pre-positioning component is connected between every two adjacent positioning and clamping components and is connected between the rotary working table and the adjacent positioning and clamping component. According to the multi-station vertical machining center four-axis hydraulic clamp, a workpiece isvertically placed, three points in a workpiece four-position technological positioning face are utilized to construct a Y-axis positioning face to realize limitation of six degrees of freedom; in addition, an auxiliary support is arranged to improve the processing stability; and a spring positioning pin component is adopted to determine the positions of the workpiece in X-axis and Z-axis, and clamps are arranged at corresponding positions of a positioning point and an auxiliary support point to clamp the workpiece.

Description

technical field [0001] The invention relates to the technical field of hydraulic clamps, in particular to a four-axis hydraulic clamp for a multi-station vertical machining center. Background technique [0002] The existing processing method is generally a single-station machining center hydraulic fixture, the workpiece is placed horizontally, and the surface-pin positioning is adopted. The positioning surface and auxiliary support are set under the workpiece, and a clamp is set above the workpiece to clamp the workpiece. The fixture can only process one workpiece at a time, which is difficult to improve the processing efficiency, and the overall volume is large and heavy; the fixture has no reliable pre-positioning for the X, Y, and Z axes of the workpiece, and manual alignment is required when placing the workpiece, which is difficult to place , it is easy to cause the workpiece to be unable to be positioned accurately; because there is no reliable pre-positioning, a large...

AI Technical Summary

Problems solved by technology

[0004] First, push the push-pull cylinder to move the clamping component on the right side to the left, touch the pre-positioning component, drive the pre-positioning component to move left together, touch the positioning component, drive the positioning component to move left together, push from right to left once, and pass through when loosening The chain drives the return position, but this solution has the following problems: 1. The stroke of the push-pull cylinder is large; 2. There is an error in the thickness of the workpiece blank, and the accumulated error will lead to poor machining accuracy; 3. The oil circuit needs to be equipped with open pipes

[0005] Then push the push-pull cylinder to the right clamping assembly, drive the remaining three sets of clamping assemblies to move left at the same time through the T-shaped guide rail, touch the pre-positioning assembly after moving a certain distance, drive the pre-positioning assembly to move left together to the positioning assembly, and clamp the cylinder Clamp the workpiece together with the auxiliary support; when loosening, the push-pull cylinder first drives the clamping component to move to the right, and after moving a certain distance, drives the pre-positioning component to move to the right together, but this solution has the following problems: 1. The T-shaped guide rail is too long, making it difficult to process High; 2. The oil distribution is cumbersome, which affects the response speed of the oil cylinder; 3. Affected by the error of the workpiece blank, the three push rods in each group cannot contact the workpiece at the same time

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