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

Method for the production of a single part piston and a piston produced by such a method

An all-in-one, piston technology, applied in the direction of tools, pistons, manufacturing tools, etc. for lathes, can solve problems such as height restrictions, save tool costs, reduce manufacturing costs, and achieve the effect of manufacturing processes

Inactive Publication Date: 2013-08-28
MAHLE INT GMBH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The height of the cooling channel is always less than twice the height of the groove between the piston crown and the piston skirt, so not only the height of this groove, but also the thickness of the tool used limits the height that can be achieved by the cooling channel

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
  • Method for the production of a single part piston and a piston produced by such a method
  • Method for the production of a single part piston and a piston produced by such a method
  • Method for the production of a single part piston and a piston produced by such a method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] figure 1 A one-piece forged piston blank 10 is shown, which is produced in the exemplary embodiment according to known forging methods. The profile of the finished piston 20 is indicated by dotted lines. The piston blank 10 comprises a piston crown 11 with a subsequent piston ring band 12, a piston skirt 13 and a piston pin seat 14 added to the piston crown 11, and can be made of forged steel or a light metal alloy, such as aluminum Alloy.

[0017] exist Figures 2 to 6 The method steps for producing the cooling channel 15 in the region of the piston ring 12 according to the invention are shown in .

[0018] In a first method step, the groove 16 is provided in the piston blank 10 by machining (in the exemplary embodiment by turning). The height of the groove 16 must only be such that the tool (in the exemplary embodiment a hook-shaped turning tool 17 ) can be moved in an arcuate swivel motion into the region of the cooling channel 15 to be produced during the rotati...

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

The present invention relates to a method for producing a single part piston (20) for an internal combustion engine from a piston blank (10), with a cooling channel (15) that is open in the downward direction running circularly inside a piston head (11), and an annular recess (16) built between the piston head (11) and a piston shaft (13), wherein the piston head (11) and the piston shaft (13) are connected to each other by means of a piston hub (14), and wherein the annular recess (16) and the cooling channel (15) are machined into the piston blank (10) by means of a cutting operation. According to the invention, it is provided that, for the cutting operation of the cooling channel (15), a tool (17) is moved into the area of the cooling channel (15) in an arc-shaped pivoting movement (A) through the recess (16), and that the cooling channel (15) is cut.

Description

technical field [0001] The present invention relates to a method for manufacturing a one-piece internal combustion engine piston having: a cooling passage extending annularly in the piston crown and opening downward; and an annular groove formed between the piston crown and the piston skirt, wherein the piston The crown and the piston skirt are connected to each other by means of an annular piston pin seat, and the annular groove and the cooling channels are added to the piston blank by machining, the outer contour is then machined and the cooling channels are closed. Background technique [0002] Such pistons cast from steel are known in practice. In order to include a closed cooling channel, a plurality of removable casting cores must be used here, which complicates the production process and increases costs. [0003] A one-piece piston machined from a cast piston blank is known from German Patent DE 100 13 395 C1. To produce the cooling channels, two different work step...

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): B23P15/10B23B1/00B23B5/00F02F3/22
CPCB23B27/04B23B2270/54B23P15/10B23B2215/245B23B27/06B23B2215/24F02F3/22Y10T29/49249B23B1/00B23B5/00
Inventor 马蒂亚斯·塞弗雷德
Owner MAHLE INT GMBH
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