CN104259754B - Impeller pull rod machining method - Google Patents
Impeller pull rod machining method Download PDFInfo
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- CN104259754B CN104259754B CN201410395933.5A CN201410395933A CN104259754B CN 104259754 B CN104259754 B CN 104259754B CN 201410395933 A CN201410395933 A CN 201410395933A CN 104259754 B CN104259754 B CN 104259754B
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- 238000000034 method Methods 0.000 title abstract description 9
- 238000003754 machining Methods 0.000 title abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 14
- 238000003801 milling Methods 0.000 claims abstract description 13
- 238000007689 inspection Methods 0.000 claims abstract description 8
- 238000005496 tempering Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 44
- 238000007906 compression Methods 0.000 claims description 44
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000012937 correction Methods 0.000 claims description 13
- 238000003672 processing method Methods 0.000 claims description 12
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000007514 turning Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 5
- 238000012797 qualification Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention belongs to the field of machining, and particularly relates to an impeller pull rod machining method. The impeller pull rod machining method is characterized by including: subjecting to a blank to thermal treating and tempering; roughly turning outer circles and end faces of a positioning end; roughly turning outer circles and end faces of a pressing end; performing ultrasonic flow detection; grinding the outer circles of each grade and positioning the two end faces of each outer circle; tapping an inner thread hole and a chamfer of the pressing end; finely turning outer threads at two ends; milling flat potential; bench workers deburring and inspecting the external threads especially at the position of the flat potential; performing surface penetrant inspection and comprehensive inspection. With the impeller pull rod machining method, coaxiality of the outer circle and thread as well as thread accuracy requirements on the external thread is guaranteed, and yield of impeller rods reaches up to 100%.
Description
Technical field
The invention belongs to machining technology field is and in particular to a kind of impeller pull bar processing method.
Background technology
The processing method of existing impeller pull bar generally comprises following steps：1st, blank is carried out heat treatment quenching and tempering；2 is rough turn
Each end face and cylindrical；3rd, ultrasonic examination；4th, each end face of smart car and cylindrical；5th, milling flat gesture；6th, smart car external screw thread and tapped blind hole,
Chamfering；7th, pincers worker deburring；8th, surface penetration inspection；9th, comprehensive test.In existing impeller pull bar processing method, by processing step
Suddenly first in step 5 milling flat gesture, then external threading in step 6, due to being interrupted cut processing, external screw thread tolerance does not reach drawing
Accuracy of thread class requirement.In addition, step 6 threading and tapped blind hole, chamfering are it is necessary to clamping twice in two steps
Correction, to process two ends external screw thread and tapped blind hole, chamfering, because correction position is turnery processing, leads to repetitive positioning accuracy
Differ from, be difficult to correct, cause the pull bar axiality processed easily overproof, the axiality not reaching drawing requires.Meanwhile, step 2 is thick
, all using engine lathe, engine lathe equipment precision is not high for car and step 4 smart car, and this impeller pull bar is 1：20 thin and long shafts zero
Part, difficulty of processing is big, conforming product rate and low production efficiency, and existing conforming product rate is only 60-70%
Content of the invention
In order to solve in prior art, the technology of the external screw thread low precision of impeller pull bar and two ends external screw thread axiality difference
Problem, it is an object of the invention to provide a kind of impeller pull bar processing method, the method is by adjusting smart car two ends external screw thread and milling
The process sequence of flat gesture, solves the technical problem of impeller pull bar external screw thread low precision；By increasing grinding process, solve leaf
The technical problem of wheel pull bar two ends external screw thread axiality difference, makes conforming product rate greatly improve.
The purpose of the present invention is achieved through the following technical solutions：
A kind of impeller pull bar processing method：Comprise the following steps：
1) blank is carried out heat treatment quenching and tempering；
2) rough turn positioning end is each cylindrical and end face, centering；
3) rough turn compression end is each cylindrical and end face, centering；
4) ultrasonic examination；
5) both ends of the surface that each shelves are cylindrical and positioning is cylindrical are ground；
6) internal thread hole, the car chamfering of compression end are attacked；
7) external screw thread of smart car compression end and positioning end；
8) the external screw thread milling flat gesture of compression end；
9) pincers worker deburring, check external screw thread particularly at the milling flat gesture of compression end；
10) surface penetration inspection；
11) comprehensive test.
Further, in step 2) in, rough turn positioning end screw thread is cylindrical and optical axis cylindrical, stay a small amount of grinding allowance；
In step 3) in, the both ends of the surface that rough turn compression end screw thread is cylindrical, positioning is cylindrical and positioning is cylindrical, stay a small amount of grinding allowance；
In step 5) in grinding step 2) and step 3) rough turn after each cylindrical and cylindrical both ends of the surface of positioning.Ensure that screw thread is cylindrical
Axiality requires, thus improving the qualification rate of impeller pull bar.
Further, in step 6) in adopt soft three-jaw folder step 5) in ground that positioning is cylindrical, ground near optical axis by flat
Positioning circle end face O, the positioning circle end face P that the cylindrical and close compression end of compression end screw thread has been ground in correction beats no more than
0.01, attack compression end internal thread hole, car chamfering.Ensure that the axiality of internal thread hole requires, be further ensured that postorder external screw thread
Axiality requires, thus improving the qualification rate of impeller pull bar.
Further, in step 7) in adopt soft three-jaw folder step 5) in ground that positioning is cylindrical, ground close compression end by flat
Positioning circle end face P, it is cylindrical and beat no more than near the positioning circle end face O of optical axis that positioning end screw thread has been ground in correction
0.01, car positioning end external screw thread；By soft three-jaw folder step 5) in ground positioning cylindrical, by the flat positioning having ground close optical axis outside
Nose circle face O, correction has ground that compression end screw thread is cylindrical and positioning circle end face P of near compression end beats no more than 0.01, car pressure
Tight end external screw thread.The correction accuracy of repeated clamping positioning being ensured, being further ensured that externally threaded axiality requires, thus improving
The qualification rate of impeller pull bar.
Beneficial effects of the present invention：
Due to after rough turn each cylindrical and end face step, internal thread hole, chamfering and the smart car external screw thread step of attacking compression end
Before, add grinding process, a small amount of grinding allowance that when grinding is rough turn, each cylindrical and end face leaves, thus ensure that postorder
Smart car internal thread hole and the correction accuracy of chamfering, smart car externally threaded repeated clamping positioning, meet externally threaded axiality and require；
Milling flat gesture step is adjusted to after smart car external screw thread step, is not in interrupted cut problem, subsequent step pincers worker simultaneously can be gone
Except the external screw thread burr at milling flat gesture and reexamine external screw thread it is ensured that external screw thread accuracy class requires；Therefore, institute of the present invention
The processing method being related to greatly improves the qualification rate of impeller pull bar, and through inspection, the qualification rate of impeller pull bar reaches 100%；
On the other hand, using CNC Lathe Turning, reduce the difficulty of processing, improve production efficiency.
Brief description
Fig. 1 is the structural representation of impeller pull bar blank.
Fig. 2 is the structural representation of impeller pull bar semi-finished product.
Fig. 3 is the structural representation of impeller pull bar finished product.
Fig. 4 is Fig. 3 H to schematic diagram.
Reference：
1- compression end；2- positioning end；3- optical axis；4- positioning end screw thread is cylindrical；5- compression end screw thread is cylindrical；
6- positioning is cylindrical；7- internal thread hole；8- positioning end external screw thread；9- compression end external screw thread；10- flat gesture
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further details.
As shown in Figure 1, Figure 2 with shown in Fig. 3 institute Fig. 4, the impeller pull bar processing method of the present invention, comprise the following steps：1) by hair
Base carries out heat treatment quenching and tempering；
2) rough turn positioning end 2 is each cylindrical and end face, centering；
3) rough turn compression end 1 is each cylindrical and end face, centering；
4) ultrasonic examination；
5) grind each shelves cylindrical and positioning cylindrical 6 both ends of the surface；
6) internal thread hole 7, the car chamfering of compression end 1 are attacked；
7) external screw thread of smart car compression end 1 and positioning end 2；
8) the external screw thread milling flat gesture of compression end 1；
9) pincers worker deburring, check external screw thread particularly at the milling flat gesture of compression end 1；
10) surface penetration inspection；
11) comprehensive test.
In step 2) in, using numerically controlled lathe, clip hold-down end 1 blank is cylindrical, centering, and light projection end 2 end face hits the heart
Hole, clip hold-down end 1 blank is cylindrical, pushes up centre bore, rough turn positioning end screw thread cylindrical 4 and optical axis 3 cylindrical, stay a small amount of grinding
Surplus；
In step 3) in, using numerically controlled lathe, the optical axis 3 pressing from both sides positioning end 1 is cylindrical, and centering optical axis 3 is round outward to beat less
Push up centre bore to positioning end 2, centering in 0.02 rear car optical axis 3 is cylindrical, rough turn compression end screw thread cylindrical 5 and positioning are outer
Circle 6 and positioning circle end face O end face P, stay a small amount of grinding allowance；
In step 5) in, top is through step 4) centre bore of the qualified rough turn impeller pull bar both ends of the surface of ultrasonic examination, grinding
Positioning end screw thread is cylindrical 4, optical axis 3 is cylindrical and compression end screw thread is cylindrical 5, positioning cylindrical 6 and positioning circle end face O end face P；
In step 6) in adopt numerically controlled lathe, with soft three-jaw folder step 5) in ground positioning cylindrical 6, ground near light by flat
The positioning circle end face O of axle 3, compression end screw thread cylindrical 5 has been ground in correction and the positioning circle end face P near compression end beats less
In 0.01, attack compression end internal thread hole 7, car chamfering；
In step 7) in adopt soft three-jaw folder step 5) in ground positioning cylindrical 6, by the flat positioning having ground close compression end
Circle end face P, positioning end screw thread cylindrical 4 has been ground in correction and the positioning circle end face O near optical axis 3 beats no more than 0.01, car
Positioning end external screw thread 8；By soft three-jaw folder step 5) in ground positioning cylindrical 6, by the flat positioning nose circle outward having ground near optical axis 3
Face O, compression end screw thread cylindrical 5 has been ground in correction and the positioning circle end face P near compression end beats no more than 0.01, car compression end
External screw thread 9；
In step 8) in milling step 7) car compression end external screw thread 9 flat gesture 10；
In step 9) in, pincers worker deburring, milling flat gesture 10 position of inspection external screw thread particularly compression end external screw thread 9.
Claims (4)
1. a kind of impeller pull bar processing method is it is characterised in that comprise the following steps：
1) blank is carried out heat treatment quenching and tempering；
2) rough turn positioning end (2) is each cylindrical and end face, centering；
3) rough turn compression end (1) is each cylindrical and end face, centering；
4) ultrasonic examination；
5) grind each shelves cylindrical and position cylindrical (6) both ends of the surface；
6) internal thread hole (7) the car chamfering of compression end (1) are attacked；
7) external screw thread of smart car compression end (1) and positioning end (2)；
8) the external screw thread milling flat gesture of compression end (1)；
9) pincers worker deburring check external screw thread；
10) surface penetration inspection；
11) comprehensive test.
2. impeller pull bar processing method as claimed in claim 1 it is characterised in that：In step 2) in, rough turn positioning end screw thread
Cylindrical (4) and optical axis (3) cylindrical, stay a small amount of grinding allowance；In step 3) in, rough turn compression end screw thread cylindrical (5), fixed
Position cylindrical (6) and the cylindrical both ends of the surface of positioning, stay a small amount of grinding allowance；In step 5) in grinding step 2) and step 3) thick
Each cylindrical after car and the cylindrical both ends of the surface of positioning.
3. impeller pull bar processing method as claimed in claim 1 it is characterised in that：In step 6) in adopt soft three-jaw folder step
5) ground positioning cylindrical (6) in, by the flat positioning circle end face O having ground near optical axis (3), it is cylindrical that compression end screw thread has been ground in correction
(5) and near the positioning circle end face P of compression end beat no more than 0.01, attack compression end internal thread hole (7), car chamfering.
4. impeller pull bar processing method as claimed in claim 1 it is characterised in that：In step 7) in adopt soft three-jaw folder step
5) ground positioning cylindrical (6) in, by the flat positioning circle end face P having ground near compression end, it is cylindrical that positioning end screw thread has been ground in correction
(4) and near the positioning circle end face O of optical axis (3) beat no more than 0.01, car positioning end external screw thread (8)；By soft three-jaw folder
Step 5) in ground positioning cylindrical (6), by the flat positioning circle end face O having ground near optical axis (3), compression end screw thread has been ground in correction
Cylindrical (5) and the positioning circle end face P near compression end beat no more than 0.01, car compression end external screw thread (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395933.5A CN104259754B (en) | 2014-08-12 | 2014-08-12 | Impeller pull rod machining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395933.5A CN104259754B (en) | 2014-08-12 | 2014-08-12 | Impeller pull rod machining method |
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| CN104259754A CN104259754A (en) | 2015-01-07 |
| CN104259754B true CN104259754B (en) | 2017-02-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105014312A (en) * | 2015-06-04 | 2015-11-04 | 昆明新道为机械制造有限公司 | Processing method for fork-shaped pull rods |
| CN106286621A (en) * | 2016-10-28 | 2017-01-04 | 重庆江增船舶重工有限公司 | A kind of main shaft, half a coupler attachment structure and installation and removal method thereof |
| CN110605544B (en) * | 2019-09-23 | 2020-10-09 | 重庆江增船舶重工有限公司 | Method for machining nozzle ring blade |
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| CN101220440A (en) * | 2008-01-22 | 2008-07-16 | 常州艾柯轧辊有限公司 | Roller and producing technique |
| CN101966644A (en) * | 2010-09-17 | 2011-02-09 | 四川天元机械工程股份有限公司 | Method for manufacturing suspension bridge tie rod |
| KR101315361B1 (en) * | 2012-05-12 | 2013-10-07 | (주)엠프로텍 | Shaft manufacturing method |
| CN102785061B (en) * | 2012-08-01 | 2015-09-30 | 宁夏共享集团有限责任公司 | A kind of processing method of high accuracy axis products |
| CN103386590A (en) * | 2013-07-16 | 2013-11-13 | 江苏亚梅泵业集团有限公司 | Processing method of chemical centrifugal pump shaft |
| CN103418999B (en) * | 2013-09-05 | 2015-08-12 | 湖北神力汽车半轴有限公司 | A kind of automobile axle shaft processing technology |
| CN103737270B (en) * | 2013-12-04 | 2016-06-29 | 鞠小平 | A kind of processing method of heavy bearing automobile main reducing gear power shaft |
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