Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cold xtrusion manufacturing method of cylindrical commutator

A manufacturing method, a cylindrical technology, applied in the manufacturing field of cylindrical commutators, which can solve problems affecting the performance of motors, poor outer roundness of commutators, complex sheet arrangement procedures, etc., to improve material utilization and production efficiency , Small radial runout, uniform arrangement of sheets

Inactive Publication Date: 2008-09-17
ZHEJIANG GREATWALL COMMUTATOR
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This sheet arrangement process is complex and cumbersome, with low production efficiency and high cost. At the same time, it needs to be manually operated by personnel, so that there is a gap between the commutator sheet and the sheet arrangement device, resulting in a large radial runout of the commutator semi-finished product during the outer circle process. , so that the outer roundness of the commutator is poor, which affects the performance of the motor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cold xtrusion manufacturing method of cylindrical commutator
  • Cold xtrusion manufacturing method of cylindrical commutator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The cold extrusion manufacturing method of the cylindrical commutator of the present invention is as follows: firstly, the copper pipe (using a cutting machine) that is not much different from the outer diameter of the required commutator is cut into a length that is not much different from the length of the commutator segment of the product. The cylindrical pipe (as shown in Figure 1), after annealing, the cylindrical pipe (using a 100T hydraulic press and a special mold for cold extrusion) is cold-extruded to form a double "7" cross-section (a Positive and negative "7" shape) integral commutator segment body (as shown in Figure 2), its inner wall has the same number of commutator segments with cup-shaped internal teeth in cross section (as shown in Figure 3) , to increase the contact area between the commutator piece and the molding compound, so that the mechanical strength of the commutator is improved; The finished product (as shown in Figure 4).

[0014] The unit ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A cold extruding technology for manufacturing the cylindrical commutator of motor includes such steps as providing a copper pipe, cutting short, annealing, cold extruding to obtain a shaped blank, pressing, solidifying, machining internal hole, turning external circle, milling slots and polishing.

Description

1. Technical field [0001] The invention relates to a method for manufacturing a cylindrical commutator for an electric motor. 2. Background technology [0002] Existing commutators for motors are generally divided into two types: cylindrical commutators and end face commutators. The manufacturing method of cylindrical commutators is generally a sheet type, and the process is: first, roll and anneal the wire rod , drawing, and then the drawn wire is punched into a single commutator piece, and then the commutator is made into a commutator through the processes of sheet arrangement, pressing, curing, inner hole processing, outer circle turning, slot milling, and polishing. finished product. [0003] Among them, the "drawing and punching" process is to draw the rolled wire (also known as ladder row) into a "I"-shaped wire (that is, the two ends of the wire are asymmetrical: one long and one short), and then punch The commutator segment is a single piece with a dovetail-shaped ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23P13/00B21C23/02
Inventor 杨积锡林祥清张学敏杨林飞
Owner ZHEJIANG GREATWALL COMMUTATOR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com