Self-adaptive clamping mechanism of numerically controlled lathe

Abstract

The invention provides a self-adaptive clamping mechanism of a numerically controlled lathe, and belongs to the technical field of machine tools. The mechanism comprises a machine body and a plurality of workpiece clamping mechanisms, each workpiece clamping mechanism comprises a hollow main shaft, a cylinder body rotationally connected to the outside of the main shaft and a plurality of clamping assemblies located on the main shaft, each clamping assembly comprises a rotating wheel rotationally connected to the main shaft, a plurality of clamping blocks evenly distributed on the rotating wheel in the circumferential direction and two plunger rods, and the plunger rods are perpendicular to the main shafts; and the clamping blocks are located in the same plane, guide holes corresponding to the clamping blocks in a one-to-one manner are formed in the rotating wheels, the guide holes are perpendicular to the plunger rods, a hydraulic cavity is formed between each main shaft and the corresponding cylinder body, and each hydraulic cavity is connected with the liquid outlet end of a hydraulic pump. After the pressure of the hydraulic cavities is increased, the clamping blocks can protrude out of the wheel faces of the rotating wheels by driving the inner ends of the plunger rods to extrude the inner ends of the clamping blocks, the rotating wheels partially extend into the hollow cavities of the main shafts, and the cylinder bodies are fixedly connected with the machine body. The mechanism has the advantages that feeding and clamping can be achieved through the main shafts, and the like.

Description

technical field [0001] The invention belongs to the technical field of machine tools and relates to an adaptive clamping mechanism of a numerically controlled lathe. Background technique [0002] In the process of machining by CNC lathe, the disassembly and assembly efficiency of the workpiece has a great impact on the processing efficiency. The automation of feeding and discharging materials also depends heavily on the design of the tooling. There are high requirements for smoothness, and the realization of automatic material feeding and discharging can not only improve processing efficiency, but also have a positive effect on operation safety. [0003] The Chinese patent with the application number CN202010762778.1 discloses a spindle-loading CNC machine tool, which uses a cylinder and a one-way limit structure to realize the movement and clamping of the workpiece. It is not difficult to see that its clamping accuracy is low, and The main shaft cannot rotate, and can only...

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Problems solved by technology

[0003] The Chinese patent with the application number CN202010762778.1 discloses a spindle-loading CNC machine tool, which uses a cylinder and a one-way limit structure to realize the movement and clamping of the workpiece. It is not difficult to see that its clamping accuracy is low, and The main shaft cannot rotate, it can only be used for cutting pipe workpieces, not for cutting shaft workpieces

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