Workpiece main shaft capable of automatically dividing and clamping

Abstract

The invention discloses a workpiece main shaft capable of automatically dividing and clamping. The workpiece main shaft comprises a shaft sleeve, a shaft core and a motor, wherein the shaft core is pivotably arranged in the shaft sleeve; the motor is in transmission connection with the shaft core; the workpiece main shaft also comprises a clamping component used for braking the shaft core and an encoder component used for detecting rotation angles of the shaft core; the clamping component comprises a brake disc fixedly connected with the shaft sleeve, a first brake pad fixedly connected with the shaft core and a first cylinder fixedly connected with the shaft sleeve; a gap is reserved between the brake disc and the first brake pad; the first cylinder and the first brake pad are arranged onone side of the brake disc; a piston rod of the first cylinder directly faces to the first brake pad. When the shaft core needs to be braked, the piston rod of the first cylinder extends outwards andapplies pressure to the first brake pad; the first brake pad is stressed and deformed, and is in contact with the brake disc; the friction force between the first brake pad and the brake disc is capable of limiting the rotation of the shaft core; the pushing force of the cylinder is strong, so that a good braking effect can be ensured; the clamping component is few in parts; the workpiece main shaft is compact in structure and more convenient to assemble.

Description

technical field [0001] The invention belongs to the technical field of machine tool spindles, and in particular relates to a workpiece spindle capable of automatic indexing and clamping. Background technique [0002] The existing indexing spindle generally includes a detection device for detecting the rotation angle and a brake device for braking the spindle. Due to the large number of parts included, the structure is often more complicated, and the existing brake device generally adopts an electromagnetic system. Although it has a high response speed, the braking force is insufficient, and the weight of the spindle is generally heavy. After the workpiece is clamped, the rotational inertia is further increased, and the braking effect is often unsatisfactory. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a workpiece spindle capable of automatic indexing and clamping, which has a compact structure a...

AI Technical Summary

Problems solved by technology

[0002] The existing indexing spindle generally includes a detection device for detecting the rotation angle and a brake device for braking the spindle. Due to the large number of parts included, the structure is often more complicated, and the existing brake device generally adopts an electromagnetic system. Although it has a high response speed, the braking force is insufficient, and the weight of the spindle is generally heavy. After the workpiece is clamped, the rotational inertia is further increased, and the braking effect is often unsatisfactory.

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