CN102489966A - Method for manufacturing connecting rod type plunger - Google Patents
Method for manufacturing connecting rod type plunger Download PDFInfo
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- CN102489966A CN102489966A CN2011104207801A CN201110420780A CN102489966A CN 102489966 A CN102489966 A CN 102489966A CN 2011104207801 A CN2011104207801 A CN 2011104207801A CN 201110420780 A CN201110420780 A CN 201110420780A CN 102489966 A CN102489966 A CN 102489966A
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- piston
- pod
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- lasso
- mould
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Abstract
The invention belongs to the field of aviation machinery, and relates to a method for manufacturing a connecting rod type plunger. The method includes the steps of respectively manufacturing a projection on the outer surfaces of a piston (1) and a socket (2); closing up the piston (1) and the socket (2) by respectively using a tapered opening bush (4), a base component (5) and a pressure head (6); respectively rolling the outer surfaces of the piston (1) and the socket (2) so that the plunger can flexibly swing; and finishing the outer surfaces of the piston (1) and the socket (2). The method is fine in closing quality and maximum in breakaway force, and meets the requirements of the piston on dimensional precision, technical conditions and surface roughness, a piston rod can flexibly swing in the piston and the socket without blocking, and normal oil supply of a plunger pump is further ensured.
Description
Technical field
The invention belongs to the aviation machine field, relate to a kind of link-type plunger manufacturing approach.
Background technology
Usually the part closing in all is that part surfaces externally and internally completion of processing is then closed up, and the assembly after the closing in generally no longer carries out machining.And the link-type plunger is just in time opposite.At first the piston Internal Spherical Surface is positioned at the part middle part, and is darker apart from aperture place, and the place, aperture is thin-walled (about 1mm), and when applying external force and close up, piston end surface is pressed heap, aperture gross distortion; Secondly two parts (piston, pod) at these part two ends all close up, and piston, pod excircle dimension are inconsistent, so piston and pod closing in have certain sequencing.Two of two ends parts (piston, pod) all close up in the link-type plunger, and the rotation of part is waved and caused very big difficulty will for the fine finishining once more of the back assembly that closes up; Back taper appears in the outer rounded ends of back part that secondly closes up, can back taper be ground off during the grinding outside piston, but a residual circle dark 0.2 wide about 0.5 groove.
Summary of the invention
The object of the invention: a kind of link-type plunger manufacturing approach is provided, and the link-type plunger all depends on the connection and the closing in of internal and external spherical surfaces, forms ball-and-socket hinge style and connects.
Technical scheme of the present invention is: a kind of link-type plunger manufacturing approach, and the link-type plunger comprises piston 1, pod 2 and piston rod 3, uses broached bushing 4 and the base assembly 5 and pressure head 6 of band tapering during closing in, may further comprise the steps:
Step 1: place convexity is processed in piston 1, pod 2 outer surfaces and corresponding position, Internal Spherical Surface center;
Step 2: carry out the closing in of piston 1 one ends: piston rod 3 is put into piston 1 Internal Spherical Surface; Then broached bushing 4 is put into piston 1 aperture; Be positioned over then on the lasso mould 7, through more than 7 radial compression piston 1 convex surfaces of lasso mould of different size, piston 1 produces plastic deformation at boss; Make the external member metal vertically and radial contraction, up to locking;
Step 3: carry out the closing in of pod 2 one ends: the end face that the aperture must be slightly larger than the pressure head alignment pod 2 of piston; Then pod 2 is positioned on the lasso mould 7; More than 7 radial compression pod 2 convex surfaces of lasso mould through different size; Pod 2 produces plastic deformation at boss, makes the external member metal vertically and radial contraction, up to locking;
Step 4: the outer surface to piston 1 and pod 2 rolls processing respectively, makes its flexible swinging.
Step 5: piston 1 and pod 2 are carried out outer surface fine finishining:
(1), after the protection of pod 2 one ends covers hose, use centreless grinding corase grind outside piston, irregular part is ground off;
(2), after the protection of piston 1 one ends covers hose, use centreless grinding corase grind pod cylindrical;
(3), the outer surface to piston 1 and pod 2 carries out spreading;
(4), use high-accuracy centerless grinder respectively the outer surface of piston 1 and pod 2 to be carried out Precision Machining.
Preferably, piston 1 diameter is during greater than pod 2 diameters, and step 2 and step 3 order are exchanged.
The invention has the beneficial effects as follows: this method closing in quality is good; Pulling-out force is maximum; Satisfy dimensional accuracy, technical conditions and the surface roughness requirement of piston, realized piston rod flexible fluent phenomenon in piston, pod, and then guaranteed the normal fuel injection work of plunger displacement pump.
Description of drawings:
Fig. 1 is a link-type piston sketch map;
Fig. 2 is a link-type piston profile;
Fig. 3 is the piston structure sketch map;
Fig. 4 is the socket structure sketch map;
Fig. 5 is a piston closing in sketch map;
Fig. 6 is a closing in back piston profile;
Fig. 7 is a pod closing in sketch map;
Fig. 8 is the back pod profile that closes up;
Fig. 9 is for rolling sketch map.
Wherein, 1-piston, 2-pod, 3-piston rod, 4-broached bushing, 5-base assembly, 6-pressure head, 7-lasso mould.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done to describe in further detail, see also Fig. 1 to Fig. 9.
Like Fig. 1 and shown in Figure 2, a kind of link-type plunger manufacturing approach, the link-type plunger comprises piston 1, pod 2 and piston rod 3, uses broached bushing 4 and the base assembly 5 and pressure head 6 of band tapering during closing in, may further comprise the steps:
Like Fig. 3 and shown in Figure 4, step 1: place convexity is processed in piston 1, pod 2 outer surfaces and corresponding position, Internal Spherical Surface center;
As shown in Figure 5; Piston external diameter then earlier closes up step 2: carry out the closing in of piston 1 one ends: piston rod 3 is put into piston 1 Internal Spherical Surface less than the pod external diameter to piston; Make piston 1 Internal Spherical Surface in the piston rod middle part, pressure head 6 is pressed the heap distortion with piston 1 end face when preventing to close up; Then broached bushing 4 is put into piston 1 aperture; Be positioned over then on the lasso mould 7, through more than 7 radial compression piston 1 convex surfaces of lasso mould of different size, piston 1 produces plastic deformation at boss; Make the external member metal vertically and radial contraction, up to locking.Lining 4 taperings part is propped up piston 1 when being squeezed like this; Using lasso mould 7 to press closes up; Through more than 7 radial compression piston 1 convex surfaces of lasso mould of different size, piston 1 produces plastic deformation at boss, makes the external member metal inwardly extend (promptly shrinking) vertically with the footpath.Piston 1 after closing up is as shown in Figure 6;
Like Fig. 7 and shown in Figure 8; Step 3: carry out the closing in of pod 2 one ends: the end face that the aperture must be slightly larger than the pressure head 6 alignment pods 2 of piston; Then pod 2 is positioned on the lasso mould 7, through more than 7 radial compression pod 2 convex surfaces of lasso mould of different size, pod 2 produces plastic deformation at boss; Make the external member metal vertically and radial contraction, up to locking; Pod 2 after closing up is as shown in Figure 8;
As shown in Figure 9, step 4: the outer surface to piston 1 and pod 2 rolls processing respectively, makes its flexible swinging.
Step 5: piston 1 and pod 2 are carried out outer surface fine finishining:
(1), after the protection of pod 2 one ends covers hose, use centreless grinding corase grind outside piston, irregular part is ground off;
(2), after the protection of piston 1 one ends covers hose, use centreless grinding corase grind pod cylindrical;
(3), the outer surface to piston 1 and pod 2 carries out spreading;
(4), use high-accuracy centerless grinder respectively the outer surface of piston 1 and pod 2 to be carried out Precision Machining.
Preferably, if piston 1 diameter during greater than pod 2 diameters, then step 2 and step 3 order are exchanged.
Claims (2)
1. link-type plunger manufacturing approach, the link-type plunger comprises piston [1], pod [2] and piston rod [3], uses broached bushing [4] and the base assembly [5] and the pressure head [6] of band tapering during closing in, it is characterized in that, may further comprise the steps:
Step 1: place convexity is processed in piston [1], pod [2] outer surface and corresponding position, Internal Spherical Surface center;
Step 2: carry out the closing in of piston [1] one end: piston rod [3] is put into piston [1] Internal Spherical Surface; Then broached bushing [4] is put into piston [1] aperture; Be positioned over then on the lasso mould [7], the lasso mould [7] through different size is radial compression piston [1] convex surfaces repeatedly, and piston [1] produces plastic deformation at boss; Make the external member metal vertically and radial contraction, up to locking;
Step 3: carry out the closing in of pod [2] one ends: the end face that the aperture must be slightly larger than the pressure head alignment pod [2] of piston []; Then pod [2] is positioned on the lasso mould [7]; Lasso mould [7] through different size is radial compression pod [2] convex surfaces repeatedly; Pod [2] produces plastic deformation at boss, makes the external member metal vertically and radial contraction, up to locking;
Step 4: the outer surface to piston [1] and pod [2] rolls processing respectively, makes its flexible swinging.
Step 5: piston [1] and pod [2] are carried out outer surface fine finishining:
(1), after the protection of pod [2] one ends covers hose, use centreless grinding corase grind outside piston, irregular part is ground off;
(2), after the protection of piston [1] one end cover hose, use centreless grinding corase grind pod cylindrical;
(3), the outer surface to piston [1] and pod [2] carries out spreading;
(4), use high-accuracy centerless grinder respectively the outer surface of piston [1] and pod [2] to be carried out Precision Machining.
2. a kind of link-type plunger manufacturing approach according to claim 1 is characterized in that, piston [1] diameter is during greater than pod [2] diameter, and step 2 and step 3 order are exchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104207801A CN102489966B (en) | 2011-12-13 | 2011-12-13 | Method for manufacturing connecting rod type plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104207801A CN102489966B (en) | 2011-12-13 | 2011-12-13 | Method for manufacturing connecting rod type plunger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102489966A true CN102489966A (en) | 2012-06-13 |
| CN102489966B CN102489966B (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104207801A Active CN102489966B (en) | 2011-12-13 | 2011-12-13 | Method for manufacturing connecting rod type plunger |
Country Status (1)
| Country | Link |
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| CN (1) | CN102489966B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350720A (en) * | 2016-05-09 | 2017-11-17 | 重庆千迈机械制造有限公司 | Hollow piston lever of reducer for automobile cold extruding processing method |
| CN113123963A (en) * | 2021-04-27 | 2021-07-16 | 河南科技大学 | Plunger connecting rod assembly, plunger connecting rod assembly forming method and forming die |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1693748A (en) * | 1927-01-24 | 1928-12-04 | Bohn Aluminium & Brass Corp | Method of making ball and socket joints |
| US2361046A (en) * | 1937-06-29 | 1944-10-24 | Molly Hans | Method of making hydraulically operating gears or transmitting devices |
| JPS5471402A (en) * | 1977-11-17 | 1979-06-08 | Kawasaki Heavy Ind Ltd | A method of processing and assembling a piston-subcomponent |
| CN2572047Y (en) * | 2002-10-08 | 2003-09-10 | 徐州天地重型机械制造有限公司 | Piston connector for concrete conveying pump |
-
2011
- 2011-12-13 CN CN2011104207801A patent/CN102489966B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1693748A (en) * | 1927-01-24 | 1928-12-04 | Bohn Aluminium & Brass Corp | Method of making ball and socket joints |
| US2361046A (en) * | 1937-06-29 | 1944-10-24 | Molly Hans | Method of making hydraulically operating gears or transmitting devices |
| JPS5471402A (en) * | 1977-11-17 | 1979-06-08 | Kawasaki Heavy Ind Ltd | A method of processing and assembling a piston-subcomponent |
| CN2572047Y (en) * | 2002-10-08 | 2003-09-10 | 徐州天地重型机械制造有限公司 | Piston connector for concrete conveying pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350720A (en) * | 2016-05-09 | 2017-11-17 | 重庆千迈机械制造有限公司 | Hollow piston lever of reducer for automobile cold extruding processing method |
| CN107350720B (en) * | 2016-05-09 | 2019-04-16 | 重庆千迈机械制造有限公司 | Hollow piston lever of reducer for automobile cold extruding processing method |
| CN113123963A (en) * | 2021-04-27 | 2021-07-16 | 河南科技大学 | Plunger connecting rod assembly, plunger connecting rod assembly forming method and forming die |
| CN113123963B (en) * | 2021-04-27 | 2022-12-30 | 河南科技大学 | Plunger connecting rod assembly, plunger connecting rod assembly forming method and forming die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102489966B (en) | 2013-12-04 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Address after: 130052 Jilin province Changchun Luyuan Qinglin Road No. 999 Patentee after: Chinese Hangfa Changchun Control Technology Co. Ltd. Address before: 130052 Jilin province Changchun Luyuan Qinglin Road No. 999 Patentee before: Changchun Aviation Hydraulic Control Co., Ltd. |