CN101049668A - Hot riveting technique in use for piston rod - Google Patents
Hot riveting technique in use for piston rod Download PDFInfo
- Publication number
- CN101049668A CN101049668A CN 200710022450 CN200710022450A CN101049668A CN 101049668 A CN101049668 A CN 101049668A CN 200710022450 CN200710022450 CN 200710022450 CN 200710022450 A CN200710022450 A CN 200710022450A CN 101049668 A CN101049668 A CN 101049668A
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- Prior art keywords
- rod
- piston
- head
- piston rod
- piston head
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- 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.)
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A thermal riveting technology for piston rod includes such steps as cutting the piston rod short by required length, enlarging its hole, reducing the diameter of its head part, heating its another end and the piston with an internal cavity, inserting the rod body in piston, punching for squeezing its excessive metal into said internal cavity of piston, and cooling.
Description
Technical field
The present invention relates to a kind of hot riveting technique that is used for piston rod, be applicable to the piston rod processing of front damper of motorcycle.
Background technology
Known front damper of motorcycle piston rod has two kinds, and a kind of is that piston head and piston rod are whole, is to adopt the precision tube cold extrusion forming, its precision tube cost height, the cold extrusion forming technical sophistication, the accuracy guarantee difficulty, another kind is that piston head and piston rod are two bodies, piston head adopts with piston rod and is threaded, to the be threaded slot that exists of cold punching extruding is compacted then, and because of operation is many, circular flow is many, easily damage in the working position, the production management cost is also high.
Summary of the invention
The invention provides a kind of hot riveting technique that is used for piston rod, not only production process is few for it, and connectivity is good, and cost of manufacture is low.
The present invention has adopted following technical scheme: a kind of hot riveting technique that is used for piston rod, and it may further comprise the steps: step 1, at first the body of rod with piston rod cuts by Len req; Step 2 is carried out reaming to the internal diameter of the body of rod after the cutting; Step 3 is carried out the draw to the diameter of the body of rod head after the reaming in the step 2, can reduce the diameter of head; Step 4 is put into heater with body of rod other end portion and piston head in the step 3 and is heated; Step 5, in piston head, be provided with and fill and lead up cavity, peg graft with piston head in the slot with the piston head after the insertion of the body of rod after the heating in the step 4 heating, then piston head is carried out punching press, after the punching press metal unnecessary on the body of rod clamp-oned with datum level location and fill and lead up cavity, it is compacted to fill and lead up cavity, and the cooling back body of rod is connected with piston head, thereby makes piston rod assembly.
Adopt drill bit to carry out reaming in the described step 2.Adopt induction furnace to heat in the described step 4, heating-up temperature is 400 ℃-500 ℃.In the described step 5 body of rod with need to proofread and correct after piston head is connected.
The present invention has following beneficial effect, piston head among the present invention and piston rod are two bodies, but connect extruding by rivet hot, to fill and lead up the position (see figure 1) because of rivet hot extruding excess metal with what the A face located that compacted piston head reserves on the piston rod, so not only reached purpose of connecting, connectivity is relatively good, and does not need piston head and piston rod are carried out screw thread processing, reduced manufacturing procedure, production cost reduces.
Description of drawings
Fig. 1 is the structural representation of piston rod assembly of the present invention
Fig. 2 is the structural representation of piston head among the present invention
Fig. 3 is the structural representation of piston rod among the present invention
The specific embodiment
In Fig. 1, Fig. 2 and Fig. 3, the invention discloses a kind of hot riveting technique that is used for piston rod, it may further comprise the steps: step 1, at first the body of rod 1 with piston rod cuts by Len req; Step 2 adopts drill bit to carry out reaming to the internal diameter of the body of rod 1 after the cutting; Step 3 is carried out the draw to the diameter of 1 head of the body of rod in the step 2, can reduce the diameter of head; Step 4 is put into induction furnace with 1 another head of the body of rod behind the draw in the step 3 and piston head 2 and is heated to 400 ℃-500 ℃; Step 5, in piston head 2, be provided with and fill and lead up cavity 3, peg graft with piston head 2 in the slot with the piston head 2 after the 1 insertion heating of the body of rod after the heating in the step 4, then piston head 2 is carried out punching press, after the punching press metal unnecessary on the body of rod 1 clamp-oned with datum level 4 location and fill and lead up cavity 3, it is compacted to fill and lead up cavity 3, and the cooling back body of rod 1 is connected with piston head 2, the body of rod 1 with need to proofread and correct after piston head 2 is connected, thereby make piston rod assembly.
Claims (4)
1, a kind of hot riveting technique that is used for piston rod, it may further comprise the steps:
Step 1, at first the body of rod (1) with piston rod cuts by Len req;
Step 2 is carried out reaming to the internal diameter of the body of rod (1) after the cutting;
Step 3 is carried out the draw to the diameter of the body of rod after the reaming in the step 2 (1) head, can reduce the diameter of head;
Step 4, another head of the body of rod (1) and piston head (2) are put into heater and are heated;
Step 5, in piston head (2), be provided with and fill and lead up cavity (3), peg graft with piston head (2) in the slot with the piston head (2) after the insertion of the body of rod (1) after the heating in the step 4 heating, then piston head (2) is carried out punching press, the metal that the body of rod (1) is upward unnecessary is clamp-oned with datum level (4) location and is filled and led up cavity (3) after the punching press, it is compacted to fill and lead up cavity (3), and the cooling back body of rod (1) is connected with piston head (2), thereby makes piston rod assembly.
2, the hot riveting technique that is used for piston rod according to claim 1 is characterized in that adopting in the described step 2 drill bit to carry out reaming.
3, the hot riveting technique that is used for piston rod according to claim 1 is characterized in that adopting in the described step 4 induction furnace to heat, and heating-up temperature is 400 ℃-500 ℃.
4, the hot riveting technique that is used for piston rod according to claim 1 needs to proofread and correct after it is characterized in that the body of rod in the described step 5 (1) and piston head (2) being connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100224500A CN100566918C (en) | 2007-05-21 | 2007-05-21 | A kind of hot riveting technique that is used for piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100224500A CN100566918C (en) | 2007-05-21 | 2007-05-21 | A kind of hot riveting technique that is used for piston rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101049668A true CN101049668A (en) | 2007-10-10 |
| CN100566918C CN100566918C (en) | 2009-12-09 |
Family
ID=38781377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100224500A Expired - Fee Related CN100566918C (en) | 2007-05-21 | 2007-05-21 | A kind of hot riveting technique that is used for piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100566918C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447771A (en) * | 2013-09-13 | 2013-12-18 | 上海沪东造船油嘴油泵有限公司 | Processing method for piston rod assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3375345A (en) * | 1964-07-15 | 1968-03-26 | Gen Motors Corp | Method of manufacturing shock absorber subassemblies |
-
2007
- 2007-05-21 CN CNB2007100224500A patent/CN100566918C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447771A (en) * | 2013-09-13 | 2013-12-18 | 上海沪东造船油嘴油泵有限公司 | Processing method for piston rod assembly |
| CN103447771B (en) * | 2013-09-13 | 2016-03-16 | 上海沪东造船油嘴油泵有限公司 | A kind of processing method of piston rod assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100566918C (en) | 2009-12-09 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20170521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |