CN211275935U - Wire rod for asymmetric R-arc scraping blade piston ring - Google Patents
Wire rod for asymmetric R-arc scraping blade piston ring Download PDFInfo
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- CN211275935U CN211275935U CN201922370602.7U CN201922370602U CN211275935U CN 211275935 U CN211275935 U CN 211275935U CN 201922370602 U CN201922370602 U CN 201922370602U CN 211275935 U CN211275935 U CN 211275935U
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- wire rod
- bottom edge
- asymmetric
- piston ring
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Abstract
The utility model discloses an asymmetric R arc doctor-bar wire rod for piston ring relates to metal product technical field. The wire is a wire with a cross section which is composed of an upper bottom edge with conicity, a lower bottom edge and two different arc side edges, the left side and the right side of the wire are different in height, and the wire is asymmetric; the heights of two sides of the cross section are respectively H1 and H2, and H2 is greater than H1; an arc R1 tangent to the upper bottom edge and the lower bottom edge is processed on the side edge of the height H1; chamfers with the included angles of alpha and the lengths of t with the upper bottom edge and the lower bottom edge are respectively machined on the side edges of the height H2, and an arc R2 tangent to the two chamfers is machined between the two chamfers. The utility model discloses a with the wire rod cross-sectional design for upper and lower end area tapering, both sides limit height difference, one side circular arc and the asymmetric structure of opposite side chamfer clamp circular arc, when utilizing the utility model discloses an increase the external corner when wire rod processing becomes the piston ring, the follow-up electroplating of being convenient for improves the yield.
Description
Technical Field
The utility model relates to a metal product technical field, more specifically say an asymmetric R arc doctor-bar wire rod for piston ring.
Background
Two side edges of a traditional doctor blade piston ring wire are in a symmetrical arc shape (see figure 1), when the piston ring is machined, the outer ring is under the action of tension, so that the size of the outer circle is reduced, the arc angle is broken during electroplating or the electroplating is not finished, and the finished product rate is low.
Disclosure of Invention
The utility model aims at providing a wire rod for asymmetric R arc doctor blade piston ring aiming at the defects existing in the prior art. The utility model discloses a with the wire rod cross-sectional design for upper and lower end area tapering, both sides limit height difference, one side circular arc and the asymmetric structure of opposite side chamfer clamp circular arc, when utilizing the utility model discloses an increase the external corner when wire rod processing becomes the piston ring, the follow-up electroplating of being convenient for improves the yield.
The purpose of the utility model can be realized by the following technical measures:
the wire rod for the asymmetric R-arc doctor blade piston ring of the utility model is a wire rod with the cross section comprising an upper bottom edge with taper, a lower bottom edge and two different arc side edges, and the left side and the right side of the wire rod are different in height and are asymmetric (when the wire rod with the asymmetric structure is used for processing a piston ring, an external round angle can be increased, the subsequent electroplating is convenient, and the yield is improved); the heights of the two sides of the cross section are respectively H1 and H2, and H2 is larger than H1 (the heights of the left side and the right side are different); an arc R1 tangent to the upper bottom edge and the lower bottom edge is processed on the side edge of the height H1; chamfers with the included angles of alpha and the lengths of t with the upper bottom edge and the lower bottom edge are respectively machined on the side edges of the height H2, and an arc R2 tangent with the two chamfers is machined between the two chamfers (when the chamfers are used, the outer ring is under the tension effect, the arc R2 and the chamfers on the two sides are stressed to form a large fillet, so that the subsequent electroplating is facilitated, and the yield is improved).
The utility model discloses in the numerical value of circular arc R1 is 1/2 of circular arc R1 place height of side H1 numerical value.
The utility model discloses in the numerical value of circular arc R2 is 1/3 of circular arc R2 place height of side H2 numerical value.
The utility model discloses in the range value of contained angle alpha is 35 ~ 42 o.
The utility model discloses in chamfer length t is 1.1 ~ 1.15 times of circular arc R2.
The utility model discloses a design principle and useful technique as follows:
the utility model discloses a with the wire rod cross-sectional design for upper and lower end area tapering, both sides limit height difference, one side circular arc and the asymmetric structure of opposite side chamfer clamp circular arc, when utilizing the utility model discloses an increase the external corner when wire rod processing becomes the piston ring, the follow-up electroplating of being convenient for improves the yield.
Drawings
Fig. 1 is a cross-sectional view of a wire of a conventional wiper piston ring.
Fig. 2 is a schematic cross-sectional view of the present invention.
The sequence numbers in the figures illustrate: 1. lower base, 2, side of height H1, 3, upper base, 4, side of height H2; alpha-the angle between the chamfer and the upper or lower base, t-the length of the chamfer, H1, H2-the height of the two sides of the cross section.
Detailed Description
The present invention is further described below with reference to the accompanying drawings and examples:
as shown in fig. 2, the wire rod for the asymmetric R-arc wiper piston ring of the present invention has a cross section comprising an upper bottom edge (3) with a taper, a lower bottom edge (1) and two different arc sides, and has different heights at the left and right sides and is asymmetric (when the wire rod with the asymmetric structure is used to process a piston ring, the external round angle can be increased, which is convenient for subsequent electroplating and improves the yield); the heights of the two sides of the cross section are respectively H1 and H2, and H2 is larger than H1 (the heights of the left side and the right side are different); an arc R1 tangent to both the upper bottom edge and the lower bottom edge is processed on the side edge (2) with the height H1; chamfers with the included angles of alpha and t with the upper bottom edge and the lower bottom edge are respectively machined on the side edges (4) with the height H2, and an arc R2 tangent with the two chamfers is machined between the two chamfers (when the chamfers are used, the outer ring is under tension, the arc R2 and the chamfers on the two sides are stressed to form a large fillet, so that subsequent electroplating is facilitated, and the yield is improved).
The utility model discloses in the numerical value of circular arc R1 is 1/2 of circular arc R1 place height of side H1 numerical value.
The utility model discloses in the numerical value of circular arc R2 is 1/3 of circular arc R2 place height of side H2 numerical value.
The utility model discloses in the range value of contained angle alpha is 35 ~ 42 o.
The utility model discloses in chamfer length t is 1.1 ~ 1.15 times of circular arc R2.
The utility model discloses a concrete in service behavior as follows:
the cross section of the wire rod of the utility model is designed to be corresponding and consistent according to the shape of the cross section of the scraping piston ring; adjusting corresponding rolling equipment and rolling equipment according to the cross section of the wire rod, and then producing a wire rod finished product at one time in a rolling and rolling way; the produced wire rod product is directly used for processing the scraper piston ring. Because the utility model discloses a with wire rod cross-sectional design for upper and lower end tape tapering, both sides limit height difference, one side circular arc and the asymmetric structure of opposite side chamfer clamp circular arc, when utilizing the utility model discloses a wire rod increases the external fillet when processing into piston ring, the follow-up electroplating of being convenient for improves the yield.
Claims (5)
1. The utility model provides an asymmetric R arc doctor blade wire rod for piston ring which characterized in that: the wire rod is a wire rod with a cross section comprising an upper bottom edge (3) with conicity, a lower bottom edge (1) and two different arc side edges, and the left side and the right side of the wire rod are different in height and are asymmetric; the heights of two sides of the cross section are respectively H1 and H2, and H2 is greater than H1; an arc R1 tangent to both the upper bottom edge and the lower bottom edge is processed on the side edge (2) with the height H1; chamfers with the included angles of alpha and the lengths of t with the upper bottom edge and the lower bottom edge are respectively machined on the side edges (4) with the height H2, and an arc R2 tangent with the two chamfers is machined between the two chamfers.
2. The wire rod for an asymmetric R-arc blade piston ring according to claim 1, wherein: the value of the circular arc R1 is 1/2 of the value of the side height H1 of the circular arc R1.
3. The wire rod for an asymmetric R-arc blade piston ring according to claim 1, wherein: the value of the circular arc R2 is 1/3 of the value of the side height H2 of the circular arc R2.
4. The wire rod for an asymmetric R-arc blade piston ring according to claim 1, wherein: the range value of the included angle alpha is 35-42 degrees.
5. The wire rod for an asymmetric R-arc blade piston ring according to claim 1, wherein: the chamfer length t is 1.1-1.15 times of that of the circular arc R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370602.7U CN211275935U (en) | 2019-12-26 | 2019-12-26 | Wire rod for asymmetric R-arc scraping blade piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370602.7U CN211275935U (en) | 2019-12-26 | 2019-12-26 | Wire rod for asymmetric R-arc scraping blade piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211275935U true CN211275935U (en) | 2020-08-18 |
Family
ID=72036534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922370602.7U Active CN211275935U (en) | 2019-12-26 | 2019-12-26 | Wire rod for asymmetric R-arc scraping blade piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211275935U (en) |
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2019
- 2019-12-26 CN CN201922370602.7U patent/CN211275935U/en active Active
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