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Machining technique for explosion-proof motor end cover

A motor end cover and processing technology technology, applied in the field of explosion-proof motor end cover processing technology, can solve the problem that the special quality requirements of the explosion-proof motor end cover cannot be met, the verticality shape and position accuracy of the end face cannot be guaranteed, and the explosion-proof end cover turning Clamping deformation and other problems, to achieve safe and reliable motor operation, significant energy saving effect, eliminating the effect of turning chatter

Inactive Publication Date: 2016-06-29
SHANDONG YUANTONG MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing method is only suitable for ordinary motor end caps, but for the processing of explosion-proof end caps, especially explosion-proof motor end caps, there are obvious disadvantages, mainly due to large deformation of explosion-proof end caps during turning and clamping, vibration during turning, etc. Disadvantages: After processing, the shape and position accuracy such as the verticality of the end face and the coaxiality of the hole cannot be guaranteed. If the hydraulic test is not carried out, the hydraulic performance index cannot be guaranteed, and the special quality requirements of the explosion-proof motor end cover cannot be met.

Method used

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  • Machining technique for explosion-proof motor end cover
  • Machining technique for explosion-proof motor end cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1~2 As shown, a type 200 explosion-proof motor end cover of ABB in Finland is assembled with the explosion-proof motor shell to form an explosion-proof motor, replacing the traditional ordinary motor. The material of the end cover is gray iron HT200, and it is required to process a large end face 2 diameter tolerance +0.3 -0.1 , Perpendicularity 0.1, coaxiality ∮ 0.1, notch depth 26.5, to ensure the assembly requirements of explosion-proof motors.

[0020] 1) Use a three-jaw chuck to clamp and align the blank, the outer circle of the car is 1, the diameter of the outer circle 1 is controlled to ∮287±0.5, and the depth is 7±0.5.

[0021] 2) Using a C630 lathe, locate the end face of the outer circle 1, align and clamp the outer circle 1, turn the big end face 2 and the big face 3, and control the diameter of the big end face 3 ∮334.8 +0.3 -0.1 , depth tolerance 26.5±0.2, large face 3 diameter ∮174.2 +0.1 -0.3 .

[0022] 3) Using a C630 lathe, locat...

Embodiment 2

[0028] A type 225 explosion-proof motor end cover of ABB in Finland, which is assembled with an explosion-proof motor casing to form an explosion-proof motor, replacing the traditional ordinary motor. The material of the end cover is gray iron HT200, and it is required to process a large end face with a diameter tolerance of 2. +0.3 -0.1 , Perpendicularity 0.1, coaxiality ∮ 0.1, notch depth 26.5, to ensure the assembly requirements of explosion-proof motors.

[0029] 1) Use a three-jaw chuck to clamp and align the blank, the outer circle of the car is 1, the control is ∮311±0.5, and the depth is 9±0.5.

[0030] 2) Use a C630 lathe to locate the end face of the outer circle, align and clamp the outer circle 1, turn the big end face seam 2 and the large face hole 3, and the diameter of the large end face seam 2 is ∮376.8 +0.3 -0.1 , depth tolerance 26.5±0.2, large face 3 diameter ∮200.2 +0.1 -0.3 .

[0031] 3) Using a C630 lathe, locate the seam 2 of the large end face, cla...

Embodiment 3

[0037] A type 250 explosion-proof motor end cover of ABB in Finland, which is assembled with an explosion-proof motor casing to form an explosion-proof motor, replacing the traditional ordinary motor. The material of the end cover is gray iron HT200, and it is required to process a large diameter tolerance of the end face. +0.3 -0.1 , Perpendicularity 0.1, coaxiality ∮ 0.1, notch depth 26.5, to ensure the assembly requirements of explosion-proof motors.

[0038] 1) Use a three-jaw chuck to clamp and align the blank, turn the outer circle, control ∮350±0.5, and the depth dimension is 9±0.5.

[0039] 2) Use a C630 lathe to locate the end face of the outer circle, align and clamp the outer circle, turn the big end face 2 and the big face 3, and the diameter of the big end face 2 is ∮424.8 +0.3 -0.1 , depth tolerance 26.5±0.2, large face 3 diameter ∮209.2 +0.1 -0.3 .

[0040] 3) Using a C630 lathe, locate the seam 2 of the large end face, clamp and align, turn the small face ...

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Abstract

The invention relates to a machining technique for an explosion-proof motor end cover and belongs to the field of production and manufacturing of motor end covers. The machining technique comprises the following steps that (1) a workblank is clamped and aligned by means of a three-jaw chuck, and an outer circle is turned; (2) the end face of the outer circle is positioned, the outer circle is aligned and clamped, and a big-end-face seam and a big-face hole are turned; (3) the big-end-face seam is positioned, clamping and aligning are conducted, and a small-face hole is turned; (4) the big-face hole is drilled and tapped; (5) an oil duct hole is drilled and tapped; (6) a circumferential hole is drilled and tapped; and (7) hydrostatic testing is conducted on the whole end cover. According to the machining technique, the process is stable, the rate of finished products is high, the machining precision of the explosion-proof motor end cover can be completely guaranteed, the explosion-proof end cover with performance indexes meeting requirements is obtained, and the production requirements of explosion-proof motors are met.

Description

technical field [0001] The invention relates to an explosion-proof motor end cover processing technology, which belongs to the field of motor end cover production and manufacturing. Background technique [0002] The explosion-proof motor end cover is a kind of workpiece that is often processed in machining. It is installed at both ends of the explosion-proof motor housing. The middle hole of the motor end cover is installed with bearings. The spigot is assembled with the explosion-proof motor casing, which supports and guides the motor shaft. The main dimensional accuracy of the end cover, the mutual position accuracy of the oil passage holes, the verticality of the end face, and the coaxiality of the holes are high, especially the end face. The hydraulic performance of the motor directly affects the operating efficiency and energy saving effect of the motor. At present, in the field of processing explosion-proof motor end covers, the main processing method is: after rough ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 周仕勇李兴华柳红飞
Owner SHANDONG YUANTONG MASCH CO LTD
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