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Motor rotor and end ring casting equipment and method thereof

A technology for motor rotors and casting equipment, applied in mechanical equipment, rotors, manufacturing squirrel cage rotors, etc., can solve problems such as poor fusion of copper raw materials, poor quality, and increased equipment costs

Pending Publication Date: 2020-10-20
CHONGQING JINKANG POWER NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, setting the centrifugal lifting device will increase the equipment cost
[0010] 4. When the molten copper material touches the copper bar with a lower temperature, the flow will slow down or even stop, resulting in poor fusion between the bar and the molten copper material, and the gap between the copper bar cannot be completely filled, and fine holes are easily formed inside the formed end ring. holes, resulting in poor quality

Method used

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  • Motor rotor and end ring casting equipment and method thereof
  • Motor rotor and end ring casting equipment and method thereof
  • Motor rotor and end ring casting equipment and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Such as Figure 1 to Figure 3 As shown, a motor rotor assembly includes an end ring 81 and a stack of laminations 83 , wherein the end ring 81 includes a first end ring 811 and a second end ring 812 . The motor rotor assembly includes a first end ring 811 , a stack of laminations 83 formed by stacking a plurality of lamination discs 82 and a second end ring 812 from top to bottom. The first end ring 811 , the stack of laminations 83 and the second end ring 812 form a cylindrical rotor. In certain cases, the cross-section of the rotor may be oval, elliptical, rectangular or any other shape. The motor is an asynchronous motor.

[0083] The lamination group 83 is stacked up and down along the central axis by a plurality of lamination discs 82, and each lamination disc 82 is also provided with a through hole for inserting the conductor bar; wherein the conductor bar is preferably a copper bar 84, and the copper bar 84 passes through it. It is arranged in the through hole...

Embodiment 2

[0125] In this embodiment, the same as in the first embodiment, the induction coil 4 is set outside the cover body 1. Considering the process of immersing the rotor core 8 into the molten metal raw material, there are many ways to make the relative displacement between the forming mold 3 and the rotor core 8 . Therefore, in this embodiment, the immersion process is realized by driving the displacement of the rotor core 8 .

[0126] The difference between this embodiment and Embodiment 1 is that the lifting device is installed on the upper part of the cover body 1; the worm wheel 71 worm 72 and the worm screw 72 lifter are fixed on the top cover 11, and the worm screw 72 extends from the top cover 11 into the cover body 1 internal. The mandrel 2 is inserted into the rotor core 8, so that the shoulder 21 in the middle of the mandrel 2 presses against the inner wall of the rotor core 8; both ends of the mandrel 2 can be screwed into nuts to press the rotor core 8 tightly. A press...

Embodiment 3

[0131] The inventors found that, in the above two embodiments, if the induction coil 4 is installed outside the cover body 1, when heating the metal raw material, it is necessary to provide a relatively large power to the induction coil 4 to meet the requirement. Therefore if Figure 16 and Figure 17 As shown, in this embodiment, the induction coil 4 is installed inside the cover body 1 to reduce energy consumption.

[0132] The difference between the second embodiment and the first embodiment lies in the structure of the cover body 1 and the installation position of the coil. The cover body 1 in this embodiment includes an upper shell 14 and a lower shell 15; the openings of the upper shell 14 and the lower shell 15 A flange 16 is formed at the place; the upper shell 14 and the lower shell 15 are fixed by passing bolts on the flange 16 . An observation window 17 is also provided on the upper case 14 . The forming state of the end ring 81 inside the cover body 1 can be eff...

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Abstract

The invention belongs to the technical field of motors, and particularly relates to motor rotor end ring casting equipment which comprises a positioning device used for fixing a rotor core, a formingdie used for casting an end ring, a heating device and a lifting device. The heating device is used for heating the metal raw material into a molten state in the forming mold. The lifting device is used for adjusting the distance between the positioning device and the forming mold, so that the lower end of the rotor core is immersed into the molten raw material in the forming mold. By the adoptionof the technical scheme, the metal raw materials are heated to be in the molten state in the forming die under vacuum or in the environment filled with inert gas, the lower end of the rotor is immersed in the molten metal raw materials, and the end ring is directly formed at the lower end of the rotor. The equipment is simple in structure, low in production cost and good in anti-oxidation effect.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a casting equipment and method for a motor rotor and an end ring thereof. Background technique [0002] With the development of new energy and traditional industries, motors are being used more and more in various fields. And the existence of the motor as the "heart", its status has also been significantly improved. The production equipment and process of the motor will directly affect the manufacturing cost, production efficiency and even product quality. Especially for asynchronous motors with copper rotors. The core of this "heart" is the electromagnetic scheme of the motor and its manufacturing path, which directly affects the power, cost, value, efficiency and market acceptance of the product, especially for asynchronous motors with copper rotors. important. [0003] Compared with the synchronous motor rotor, the copper rotor of the asynchronous motor has a more complex m...

Claims

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Application Information

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IPC IPC(8): H02K15/02H02K15/00H02K17/16B22D19/00B22D23/06
CPCH02K17/165H02K15/02H02K15/0012H02K15/0068B22D19/0054B22D23/06H02K2213/03
Inventor 陈明昌汪浩王银李志华张霄霆梁其军
Owner CHONGQING JINKANG POWER NEW ENERGY CO LTD
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