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Structure of low-speed high-torque electric main shaft machine tool clamp supported by magnetic suspension

A machine tool fixture and high torque technology, applied in the fields of equipment manufacturing and machining, can solve problems such as the self-heavy fixture and affect the machining accuracy, and achieve the effect of avoiding small deformation, avoiding the increase of machining errors, and ensuring concentricity.

Pending Publication Date: 2020-07-10
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the workpiece fixture should be clamped on the hollow shaft. The weight of the conventional fixture is relatively large. Two fixtures are required to hold the workpiece when machining on both sides. The motor shaft is easily pressed by the weight of the fixture to produce an inverted "V" shape deformation, which seriously affects the machining accuracy.

Method used

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  • Structure of low-speed high-torque electric main shaft machine tool clamp supported by magnetic suspension
  • Structure of low-speed high-torque electric main shaft machine tool clamp supported by magnetic suspension
  • Structure of low-speed high-torque electric main shaft machine tool clamp supported by magnetic suspension

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Embodiment Construction

[0028] The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.

[0029] Such as Figure 1-2 The structure of the low-speed and high-torque electric spindle machine tool fixture supported by the magnetic levitation technology is shown, figure 1 It is a schematic diagram of the power part of a low-speed high-torque electric spindle machine tool. Utilization of existing machine tools figure 1 The low-speed high-torque spindle motor 1 shown will be figure 1 The shown fixture 3 is installed on the hollow shaft of the low-speed high-torque spindle motor 1 . The workpiece is clamped by the fixture 3, and the low-speed high-torque s...

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Abstract

The invention relates to a structure of a low-speed high-torque electric main shaft machine tool clamp supported by magnetic suspension. The structure is used for offsetting the gravity of the machinetool clamp and reducing the compression of the clamp on the main shaft due to self weight. Permanent magnets are installed on the low-speed high-torque electric-main shaft machine tool clamp, and magnetic cores and electrical coils are installed around the clamp. The vertical suspension force is provided by the interaction of a resultant magnetic field and the permanent magnets of the clamp to offset the gravity of the clamp, the supporting effect of a driving motor shaft on the clamp is reduced, and the situation that a machine tool cannot machine workpieces normally due to the bending deformation of the shaft caused by the gravity of the clamp is avoided, and the machining accuracy and durability of the machine tool are improved.

Description

technical field [0001] The invention relates to the fields of mechanical processing and equipment manufacturing, in particular to a structure for supporting low-speed and high-torque electric spindle machine tool clamps by using magnetic suspension. Background technique [0002] In the CNC machine tool, the electric spindle combines the machine tool spindle and the spindle motor, which can eliminate the pulley drive and gear drive of the main drive system of the high-speed CNC machine tool. The machine tool spindle is directly driven by the built-in motor, thereby shortening the length of the machine tool main drive chain. is zero, realizing the "zero transmission chain" of the machine tool. This type of transmission structure in which the spindle motor and the machine tool spindle are "integrated into one" makes the spindle components relatively independent from the transmission system and the overall structure of the machine tool, so it can be made into a "spindle unit", c...

Claims

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Application Information

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IPC IPC(8): B23Q3/12B23B19/02
CPCB23Q1/70B23Q3/12
Inventor 梁樑徐翌翔鲍晓华徐威刘佶炜
Owner HEFEI UNIV OF TECH