A mandrel clamp and mounting chuck

Abstract

The invention discloses a mandrel clamp which comprises a tightening bolt. The mandrel clamp is characterized in that the mandrel clamp is equipped with a pop-up mechanism which is popped up when an expanding bolt is interfered by the tightening bolt, and is provided with a second connecting part at one side. A mounting chuck is used for mounting the mandrel clamp. The mounting chuck is firstly mounted on a machine tool, a tension part of the mounting chuck is linked with a machine tool oil cylinder pull rod; a drive tension part of the mounting chuck moves in a vertical direction; a tension bolt is firstly taken out, the mandrel clamp is mounted on the mounting surface of the mounting chuck, the position of a pop-up mechanism corresponds to a first connecting part of the tension part of the mounting chuck, and the pop-up mechanism is not connected with a first connecting part; and the tightening bolt is mounted, and the tightening bolt drives the pop-up mechanism to pop up, so that the pop-up mechanism can be linked with a push-pull part.

Description

technical field [0001] The invention relates to the field of machine tool processing, in particular to a mandrel clamp and a mounting chuck. Background technique [0002] At present, for the three-jaw chucks on the market, if the state of opening the inner hole of the workpiece to be processed is to be switched to the state of clamping the outer circle of the workpiece to be processed, the jaws need to be removed and repaired to a suitable diameter. Conversely, switching from the state of clamping the outer circle to the state of expanding the inner hole also requires removing the claws and repairing them to a suitable diameter. [0003] Sometimes, if the process only needs to support the inner hole, instead of using a three-jaw chuck to support the inner hole of the workpiece, a mandrel fixture can be used to support the inner hole of the workpiece. The structure of the existing mandrel fixture can refer to the Chinese patent CN201420410049.X, mainly including the expansio...

AI Technical Summary

Problems solved by technology

[0004] The defect of the prior art is that when using the three-jaw chuck to switch the two states of supporting the inner hole and clamping the outer circle, the jaws need to be replaced, which is inconvenient to operate; and if the mandrel clamp is used, the workpiece can only be supported inside. hole, it is impossible to fix the workpiece by clamping the outer circle; and if you use an elastic chuck (also known as a CNC milling machine spring chuck, it is a kind of tool used to confine a drill bit or a milling cutter on a milling machine. A cylindrical fixture, which is also a fixture used to fix and reinforce parts that need to be modified) can only clamp the outer circle of the workpiece, and cannot fix the workpiece by supporting the inner hole

Moreover, the installation of the existing mandrel clamps is cumbersome, resulting in inconvenient disassembly and installation of the mandrel clamps to replace the elastic collets used to clamp the outer circle

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