Thin-wall braking sleeve of direct drive rotary table and manufacturing method

A turntable and thin-walled technology, applied in the field of direct-drive turntables, can solve the problems of brake failure of thin-walled sleeves, elastic deformation of thin-walled sleeves, waste of energy, etc. Effect

Inactive Publication Date: 2014-06-25
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key point is that the existing thin-walled brake sleeves are all circular in cross-section. Under the action of hydraulic pressure, it is very difficult to make a circular cross-section elastically deform in the radial direction.
In engineering practice, the problem of elastic deformation of the thin-walled

Method used

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  • Thin-wall braking sleeve of direct drive rotary table and manufacturing method
  • Thin-wall braking sleeve of direct drive rotary table and manufacturing method
  • Thin-wall braking sleeve of direct drive rotary table and manufacturing method

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Embodiment Construction

[0033] Such as Figure 2-4 As shown, the thin-walled brake sleeve 2 of the direct drive turntable implemented according to the present invention is arranged between the motor rotor and the housing 7 of the direct drive turntable; the workbench 5 of the direct drive turntable is driven by the motor through the turntable bearing 6; the motor rotor It is the servo motor rotor assembly 3, and the inside of the rotor is the servo motor stator assembly 4; the main body of the thin-walled brake sleeve 2 is an annular cylinder, and the upper end surface and the lower end surface of the annular cylinder protrude oppositely to form an outer shell that matches the shell 7 shoulders. Stretching edge, the stretching edge at the upper end face and the lower end face are all fixed on the shell 7; The outer gap d is set, and the inner gap c is set between the inner edge of the oval ring and the outer wall of the motor rotor; the outer gap d is larger than the inner gap c, and the outer gap d ...

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Abstract

The invention relates to a thin-wall braking sleeve of a direct drive rotary table and a manufacturing method. A main body of the thin-wall braking sleeve of the direct drive rotary table is an annular cylinder, and the cross section of the annular cylinder is an oval ring. In the height direction of the oval ring, an external gap d is reserved between the outer edge of the oval ring and the inner wall of a case body, and an internal gap c is reserved between the inner edge of the oval ring and the outer wall of a motor rotor, wherein the external gap d is larger than the internal gap c and is filled with hydraulic oil. When the external gap d is filled with the hydraulic oil and the radial hydraulic pressure is generated, at least one action point on the inner wall surface of the annular cylinder is attached to the outer wall of the motor rotor under the effect of the hydraulic pressure in the circumferential direction of the oval ring, so that friction force is generated. On the premise of guaranteeing the strength and the abrasive resistance of the thin-wall braking sleeve, the thin-wall braking sleeve generates elastic deformation easily, and therefore braking of the direct drive rotary table is easy, safe and reliable, and oil leakage is avoided.

Description

technical field [0001] The invention relates to the technical field of direct drive turntables, in particular to a thin-walled brake sleeve and a braking method for direct drive turntables. Background technique [0002] The direct-drive turntable is mainly used in the rotating coordinates of CNC machine tools, and is also widely used in the automatic control of the rotation angle of radar, turret, gyroscope, etc. The direct drive turntable has been highly valued by relevant industries in recent years due to its remarkable characteristics of zero transmission, no transmission error, no wear of transmission parts, and high precision, and has been continuously listed as a major national project. [0003] Among the technologies related to the direct drive turntable, an important technology is the braking technology of the turntable. At present, the main braking methods include end-face braking using butterfly springs or hydraulic power and encircling braking using hydraulic powe...

Claims

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Application Information

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IPC IPC(8): F16D65/02F16D65/14
Inventor 刘海岷
Owner WUHAN POLYTECHNIC UNIVERSITY
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