CN102689050A - Arch rod of hacksaw frame - Google Patents
Arch rod of hacksaw frame Download PDFInfo
- Publication number
- CN102689050A CN102689050A CN2012101389376A CN201210138937A CN102689050A CN 102689050 A CN102689050 A CN 102689050A CN 2012101389376 A CN2012101389376 A CN 2012101389376A CN 201210138937 A CN201210138937 A CN 201210138937A CN 102689050 A CN102689050 A CN 102689050A
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- China
- Prior art keywords
- stainless steel
- hacksaw frame
- hyphen
- hunchbacked
- bar
- 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.)
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Abstract
An arch rod of a hacksaw frame provided by the invention is molded from a stainless steel pipe. The section of the stainless steel pipe is in a shape of a hollow I outlined by pipe walls, wherein a lower wall of the I upper short stroke <1> and an upper wall of the lower short stroke are hypotenuses, and the tilt of the hypotenuse makes the width of the short strokes gradually expand towards the two sides of a vertical stroke <2>. According to the invention, the stainless steel pipe with the I is used as the arch rod of the hacksaw frame, and the flexural intensity is improved. More particularly, the two sides of the upper and lower short strokes are tangentially connected with hypotenuses of the vertical stroke. Therefore, feasibility of the pipe molding is ensured, uniformity of wall thickness is ensured and eventually provided sufficient flexural intensity is ensured. Compared with the prior art, the arched rod of the hacksaw frame of the invention is more environmentally friendly than materials made after ordinary carbon steel plating processing, and is more material-saving than flat side stainless steel pipes.
Description
Technical field
What the present invention relates to is a kind of hunchbacked bar of hacksaw frame, the cross sectional shape of especially hunchbacked bar.
Background technology
Hacksaw frame supports saw blade with its bow-shaped structural, and so-called bow-shaped structural has front boom and back boom, and the front and back cantilever is connected by hunchbacked bar, between the end end that cantilever connected without hunchbacked bar before and after saw blade was mounted in.The handling of saw blade when the tensioning degree on the saw frame is related to saw in work is related to the accuracy that sawing is cut.Therefore, in order to guarantee enough tensile forces, saw blade should have enough tension force, and the flexural strength of the bigger hunchbacked bar of length is a The key factor relatively wherein.In the past, hunchbacked bar was that solid steel bar bends, and consumptive material is bigger, has produced split type hacksaw frame afterwards, and hunchbacked bar serves as to save material with flat side's steel pipe.As be anticorrosion attractive in appearance with raising, then used steel material passes through electroplating processes usually.As everyone knows, electroplate not only a large amount of loss precious metals but also produce a large amount of pollutions, so people attempt to substitute the steel through electroplating processes with stainless steel.But stainless steel but exists and does bending strength not as the defective of steel, so the tubing in deltiod cross section commonly used can not satisfy the needs of hacksaw frame.
Summary of the invention
To above-mentioned not mesopodium, the present invention is exactly the hunchbacked bar that the hacksaw frame that a kind of stainless steel pipe that satisfies the needed flexural strength of hacksaw frame makes will be provided.
The hunchbacked bar of hacksaw frame provided by the invention; By the stainless steel tube material forming; The cross sectional shape of this stainless steel pipe is the hollow I-shaped that becomes with the tube wall cropping, and wherein the upper wall of the lower wall of hyphen and following hyphen is a hypotenuse on the I-shaped, the inclination of hypotenuse make the hyphen width from two ends gradually in the expansion of perpendicular both sides.
The hunchbacked bar of hacksaw frame provided by the invention serves as with the stainless steel pipe that the I-shaped shape is arranged, and has improved its flexural strength.Especially up and down the hyphen two ends with in tangent connection of hypotenuse of erecting, guaranteed the feasibility of tube forming, the uniformity of pipe thickness and the enough flexural strengths that finally provide.Compared with prior art, the present invention makes with flat side's stainless steel pipe and saves material more with the environmental protection more of the material after the ordinary carbon steel electroplating processes.
In said the both sides hypotenuse at perpendicular two ends with in the angle of perpendicular center line be 30 ° ~ 60 °, so that higher flexural strength to be provided, make the stainless steel material that under the prerequisite that equal tension can be provided, uses still less.
Inferior horn is fillet on the two ends of said hyphen up and down, and perhaps the two ends of hyphen are the circular arcs tangent with last lower wall up and down, to reduce the stress of two ends bending part, further improves its flexural strength.
Description of drawings
Fig. 1 is the sectional view of one embodiment of the invention, among the figure: the 1-hyphen, perpendicular among the 2-, among the a-both sides hypotenuse at perpendicular two ends with in the angle of perpendicular center line, r-hyphen two ends arc radius.
The specific embodiment
1, the hunchbacked bar of a hacksaw frame; Make by stainless steel pipe; The cross section of this back of a bow rod tube material is as shown in Figure 1; Roughly be a hollow I-shaped shape, connect with a tangent circular arc between the lower wall on the two ends of two hyphens 1 up and down, and in perpendicular about in the of 2 the both sides at two ends be connected with said circular arc is tangent with a hypotenuse.I-shaped height 28 mm wherein, wide 12 mm, in perpendicular high 18 mm of wide part, arc radius r 2 mm, hypotenuse with in 45 ° of the angle a of perpendicular center line.
2, the hunchbacked bar of the hacksaw frame of stainless steel pipe making; The cross section shape of this stainless steel tube such as hollow I-shaped; Its up and down on the hyphen two ends lower wall be connected with circular arc with end wall, up and down hyphen with in the perpendicular wall that is connected be hypotenuse, hypotenuse and in erect 30 ° of the angles of center line.
3, as above example, hypotenuse with in 60 ° of the angles of perpendicular center line, hypotenuse with in erect between the two side and also be connected with circular arc.
Claims (4)
1. the hunchbacked bar of a hacksaw frame; By the stainless steel tube material forming; The cross sectional shape that it is characterized in that this stainless steel pipe is the hollow I-shaped that becomes with the tube wall cropping; Wherein the upper wall of the lower wall of hyphen and following hyphen is a hypotenuse on the I-shaped, the inclination of hypotenuse make the hyphen width from two ends gradually in the expansion of perpendicular both sides.
2. the hunchbacked bar of hacksaw frame as claimed in claim 1, it is characterized in that said in perpendicular two ends the both sides hypotenuse with in the angle of perpendicular center line be 30 ° ~ 60 °.
3. according to claim 1 or claim 2 the hunchbacked bar of hacksaw frame is characterized in that inferior horn is fillet on the two ends of said hyphen up and down.
4. according to claim 1 or claim 2 the hunchbacked bar of hacksaw frame is characterized in that the said two ends of hyphen up and down are the circular arcs tangent with last lower wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101389376A CN102689050A (en) | 2012-05-04 | 2012-05-04 | Arch rod of hacksaw frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101389376A CN102689050A (en) | 2012-05-04 | 2012-05-04 | Arch rod of hacksaw frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102689050A true CN102689050A (en) | 2012-09-26 |
Family
ID=46854878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101389376A Pending CN102689050A (en) | 2012-05-04 | 2012-05-04 | Arch rod of hacksaw frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102689050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424931A (en) * | 2016-09-18 | 2017-02-22 | 舟山春蕾锯业有限公司 | Hand saw |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124015A (en) * | 1994-03-03 | 1996-06-05 | 法科姆公司 | Saw frame |
| CN1589999A (en) * | 2003-08-26 | 2005-03-09 | 斯坦利公司 | Hacksaw with blade tension adjustment mechanism |
| CN2701562Y (en) * | 2004-03-02 | 2005-05-25 | 吕金杰 | A novel saw blade |
| CN201105342Y (en) * | 2007-10-17 | 2008-08-27 | 陈登隆 | Modified sash saw structure |
| CN202622062U (en) * | 2012-05-04 | 2012-12-26 | 舟山春蕾锯业有限公司 | Cambered rod of hacksaw frame |
-
2012
- 2012-05-04 CN CN2012101389376A patent/CN102689050A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124015A (en) * | 1994-03-03 | 1996-06-05 | 法科姆公司 | Saw frame |
| CN1589999A (en) * | 2003-08-26 | 2005-03-09 | 斯坦利公司 | Hacksaw with blade tension adjustment mechanism |
| CN2701562Y (en) * | 2004-03-02 | 2005-05-25 | 吕金杰 | A novel saw blade |
| CN201105342Y (en) * | 2007-10-17 | 2008-08-27 | 陈登隆 | Modified sash saw structure |
| CN202622062U (en) * | 2012-05-04 | 2012-12-26 | 舟山春蕾锯业有限公司 | Cambered rod of hacksaw frame |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424931A (en) * | 2016-09-18 | 2017-02-22 | 舟山春蕾锯业有限公司 | Hand saw |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |
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| WD01 | Invention patent application deemed withdrawn after publication |