CN1054654A - " dong feng 4 " internal combustion locomotive connecting rod screw is clamping method - Google Patents
" dong feng 4 " internal combustion locomotive connecting rod screw is clamping method Download PDFInfo
- Publication number
- CN1054654A CN1054654A CN 90105420 CN90105420A CN1054654A CN 1054654 A CN1054654 A CN 1054654A CN 90105420 CN90105420 CN 90105420 CN 90105420 A CN90105420 A CN 90105420A CN 1054654 A CN1054654 A CN 1054654A
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- CN
- China
- Prior art keywords
- screw
- technology
- product
- connecting rod
- internal combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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- Clamps And Clips (AREA)
Abstract
A kind of " dong feng 4 " internal combustion locomotive connecting rod screw is clamping method, be by technology screw and product screw successively respectively the tightening stretching on technology cover and product look for the position, realize the designing requirement when product screw is installed, characteristics of the present invention are the technology screw to be put in the amount of tension of tightening on the product in technology get identical value between 0.01～0.40 millimeter, thereby can significantly reduce the residual deformation and the thread damage of technology screw, be multiplied its working life, reduce labor intensity.
Description
The present invention relates to " dong feng 4 " internal combustion locomotive connecting rod screw clamping method.
" dong feng 4 " internal combustion locomotive connecting rod screw critical four product screws that are screwed in the connecting rod shank by connecting rod cap of asking all are being stretched 0.50 millimeter after tight, and because screw hole is the blind hole form, the actual elongation of product screw can't directly measure, the way step of existing employing is: 1. the technology screw is had fixedly the passing hole type technology of groove one and put to tighten it is stretched 0.50 millimeter, alignment is groove standardized groove on the technology screw head fixedly, then it is back-outed; 2. product screw is put to tighten in same technology and elongate 0.50 millimeter (available arc measurer directly measures), the groove that aligned process puts is standardized groove on the product screw head, then it is back-outed; 3. the technology screw is tightened on product and be stretched to 0.50 millimeter (can draw by measuring its core bar deflection), the groove on the aligned process screw head is a standardized groove on the connecting rod cap at product, then it is back-outed; 4. be that groove on the connecting rod cap aligns with product screw tightening the groove that is stretched on the product screw head and product on the product.So far, product screw is tightened on product and has been stretched 0.50 millimeter.
Because this method requires each technology screw all will be stretched 0.50 millimeter respectively on technology cover and product, then make the technology screw very easily produce plastic deformation and measure inaccurate or make helical thread portion that " blowing out " phenomenon that being commonly called as appears in mashed tooth take place, thereby the circular bead surface of badly damaged product screw thread and tapped hole, the technology screw is scrapped simultaneously, causes significant wastage.
Purpose of the present invention just provides a kind of new screw clamping method, and the life-span of technology screw is improved greatly.
Essence of the present invention is: reduce the technology screw each tighten amount of tension, making its amount of tension of tightening on technology cover and product is between 0.01～0.40 millimeter, preferably is selected between 0.10～0.30 millimeter.
Adopt method provided by the present invention, can reduce the extruding of technology screw thread part, shoulder part, reduce the elastic deformation amount in its work, thereby can reduce the afterflow in the real work greatly, reduce the damage of helical thread portion, improve technology screw working life exponentially, reduce labor intensity.
Now narrate one embodiment of the present of invention, in the present embodiment, all the same with product screw with current practice in the method for measurement that technology puts amount of tension to the method for measurement of technology screw amount of tension.The process step of this method is as follows:
1. the technology screw is put in technology and tighten 0.15 millimeter of stretching, the fixedly groove that aligned process puts standardized groove on the technology screw head is back-outed the technology screw then; 2. product screw is put to tighten in technology and stretch 9.50 millimeters the fixedly groove that aligned process puts standardized groove on the product screw head, the product screw of back-outing then; 3. the technology screw is tightened 0.45 millimeter of stretching on product, the groove on the aligned process screw head is a standardized groove on the connecting rod cap at product, the technology of back-outing then screw; 4. product screw is tightened stretching on product, making groove aligned products on the product screw head is groove on the connecting rod cap, and so far, product screw is tightened on product and stretched 0.50 millimeter, reaches designing requirement.
Claims (2)
1, a kind of " dong feng 4 " internal combustion locomotive connecting rod screw is clamping method, by technology screw and product screw successively respectively technology put with product on tighten and stretch and line looks for the position to realize, it is characterized in that the technology screw puts and gets identical value in the amount of tension of tightening on the product between 0.01～0.40 millimeter in technology.
2, " dong feng 4 " according to claim 1 internal combustion locomotive connecting rod screw is clamping method, it is characterized in that the technology screw technology put and product on the amount of tension of tightening be preferably in and get identical value between 0.10～0.30 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105420 CN1054654A (en) | 1990-03-08 | 1990-03-08 | " dong feng 4 " internal combustion locomotive connecting rod screw is clamping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105420 CN1054654A (en) | 1990-03-08 | 1990-03-08 | " dong feng 4 " internal combustion locomotive connecting rod screw is clamping method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1054654A true CN1054654A (en) | 1991-09-18 |
Family
ID=4879239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105420 Pending CN1054654A (en) | 1990-03-08 | 1990-03-08 | " dong feng 4 " internal combustion locomotive connecting rod screw is clamping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041498A (en) * | 2016-06-14 | 2016-10-26 | 江苏永昊高强度螺栓有限公司 | Moment plus corner screwing process for bolts of engine connection rod |
-
1990
- 1990-03-08 CN CN 90105420 patent/CN1054654A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041498A (en) * | 2016-06-14 | 2016-10-26 | 江苏永昊高强度螺栓有限公司 | Moment plus corner screwing process for bolts of engine connection rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |