CN86208689U - Assembling gear scraping hob made from hard alloy - Google Patents
Assembling gear scraping hob made from hard alloy Download PDFInfo
- Publication number
- CN86208689U CN86208689U CN 86208689 CN86208689U CN86208689U CN 86208689 U CN86208689 U CN 86208689U CN 86208689 CN86208689 CN 86208689 CN 86208689 U CN86208689 U CN 86208689U CN 86208689 U CN86208689 U CN 86208689U
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- CN
- China
- Prior art keywords
- cutter
- tooth bar
- cutter tooth
- hob
- cutter hub
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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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Abstract
The utility model relates to an improved assembling gear scraping hob made from hard alloy. The side of the tooth of the gear hob forms a cylindrical spiral surface which is coaxial with the hob. The processing of the spiral surface is realized by that the hob tooth bars are installed on the hob body according to a certain rule, and then is realized by circular grinding method. The gear bob has the advantages of simple gear grinding technology, good finish of the side of the tooth, high accuracy, and high durability, and has the advantages that the error of regrinding tooth form is eliminated; an optimal radial rake angle can be adopted.
Description
The utility model relates to a kind of improved assembled carbide alloy scraping gear hob.
In prior art, all gear hobs with regard to the last fine finishining of cutter tooth side, can be divided into radially relief grinding hobboing cutter and circle mill hobboing cutter two classes.
One, radially the relief grinding hobboing cutter because relief grinding causes the influence of factor such as cutter tooth side distortion, hobboing cutter all produces new profile error after with blunt refacing, this error increases along with the increase of hobboing cutter radial rake numerical value, become the key factor that restriction hobboing cutter radial rake increases, facts have proved, the durability of carbide alloy scraping gear hob is again to increase with the increasing of radial rake, and optimum value is-40 °～-45 °.The restriction of profile error and some other factor owing to be subjected to refacing, the radial rake of existing carbide alloy scraping gear hob only adopts-25 °～-30 °, when the also not enough blade of the amount of refacing allow to reface three of thickness/for the moment, the profile error of refacing has just exceeded the affiliated accuracy class of this hobboing cutter, continues to use to guarantee crudy.
Two, justifying roll flute wheel hobboing cutter is that the cutter tooth side is made with the cylinder helical plane of hobboing cutter eccentric axis, so not only can not be eliminated the profile error of refacing, also need other manufacture craft cutter hub, hobboing cutter structure and manufacturing process complexity, the cost height, Shang Weiyou adopts in carbide alloy scraping gear hob.
More than two prior aries at Develpment of Hobs " TOOLING ﹠amp; MACHINING " February 1985 and " machine tool "---respond in the 65 national science and technology achievements of tackling key problem compilation.
The purpose of this utility model is to eliminate the profile error of refacing, and improves the durability of hobboing cutter, and technology is simple, and is highly polished.
The technical solution of the utility model is: by cutter hub (1), be installed in the cutter tooth bar (2) on the cutter hub (1), with the carbide chip (3) that is contained on the cutter tooth bar (2), and being positioned at the right-hand screw scraping gear hob that cutter hub two end cap (4) is formed, it is 1,2 that its special character is to have on the body (1) along garden week erection sequence, 3 ... n number cutter tooth bar (2), the carbide chip (3) on this cutter tooth bar (2) has at cutter tooth bar (2) with n, n-1, n-2 ... 2,1 order is installed in the left surface that grinding goes out on the cutter hub (1) and has when n is odd number (n=9), and cutter tooth bar (2) is with 1,3,5,7,9,2,4,6,8 orders are when n is even number (n=10), cutter tooth bar (2) is with 1,4,7,10,3,6,9,2,5,8 orders are installed in cutter hub (1) and go up the right flank that grinding goes out.
Or by cutter hub (1), be installed in the cutter tooth bar (2) on the cutter hub (1), with the carbide chip (3) that is contained on the cutter tooth bar (2), and the left-hand screw scraping gear hob formed of the end cap (4) that is positioned at the cutter hub two ends, it is 1,2 that its special character is to have on the body (1) along garden week erection sequence, 3 ... n number cutter tooth bar (2), the carbide chip (3) on this cutter tooth bar (2) has at cutter tooth bar (2) with n, n-1, n-2 ... 2,1 order is installed in the right flank that grinding goes out on the cutter hub (1) and has when n is odd number (n=9), and cutter tooth bar (2) is with 1,3,5,7,9,2,4,6,8 orders are when n is even number (n=10), cutter tooth bar (2) is with 1,4,7,10,3,6,9,2,5,8 orders are installed in cutter hub (1) and go up the left surface that grinding goes out.
Assembled carbide alloy scraping gear hob of the present utility model is compared with the scraping gear hob described in the document of above-mentioned prior art, has eliminated the profile error of refacing; Can adopt best radial rake, improve the durability of hobboing cutter; It is simple to have gear-grinding process, characteristics such as flank fineness height.
Below in conjunction with accompanying drawing utility model is described in further detail.
Fig. 1 is the photo figure of assembled carbide alloy scraping gear hob of the present utility model.
Fig. 2 a and b are respectively that (Fig. 2 a) and the cutter tooth bar of left-hand screw finished product hobboing cutter (Fig. 2 b) expanded view after the cutter hub circumference erection sequence numbering for right-hand screw finished product hobboing cutter of the present utility model.
Fig. 3 a and b are respectively that (a) when grinding blade left surface and left-hand screw hobboing cutter (Fig. 3 b) grinding blade right flank, the cutter tooth bar of numbering replaces on cutter hub the expanded view of back along circumference is installed Fig. 3 right-hand screw hobboing cutter of the present utility model.
Fig. 4 a and b are respectively that (a) when grinding blade right flank (n is an odd number) and left-hand screw hobboing cutter (Fig. 4 b) grinding blade left surface (n is an odd number), the cutter tooth bar of numbering replaces on cutter hub the expanded view of back along circumference is installed Fig. 4 right-hand screw hobboing cutter of the present utility model.
Fig. 5 a and b are respectively that (a) when grinding blade right flank (n is an even number) and left-hand screw hobboing cutter (Fig. 5 b) grinding blade left surface (n is an even number), the cutter tooth bar of numbering replaces on cutter hub the expanded view of back along circumference is installed Fig. 5 right-hand screw hobboing cutter of the present utility model.
Fig. 1 illustrates the photo in kind of assembled carbide alloy scraping gear hob of the present utility model.1 is cutter hub among the figure, and 2 is the cutter tooth bar, and 3 is carbide chip, and 4 is end cap.This hobboing cutter is that carbide chip (3) is fastened on the cutter tooth bar (2) with modes such as bonding, welding or machine folders, again cutter tooth bar (2) is placed cutter hub (1) groove, with modes such as bonding or machine folders cutter tooth bar (2) and cutter hub (1) are connected into one, and fastening by the end cap (4) at hobboing cutter two ends.The grinding of carbide chip (3) side on the hobboing cutter cutter tooth bar (2), be earlier cutter tooth bar (2) press the finished product hobboing cutter along the erection sequence volume Shang number of circumference (with reference to Fig. 2 a, Fig. 2 b), again according to the not grinding of ipsilateral of hobboing cutter, cutter tooth bar (2) is installed on the cutter hub (1) according to the certain rule transposition, wear into the cylinder helical plane coaxial with circle mill method circle, and then the cutter tooth bar is assembled into the finished product hobboing cutter by former sequence number with hobboing cutter.
When Fig. 3 a and Fig. 3 b illustrate carbide chip (3) the right flank grinding of carbide chip (3) the left surface grinding of right-hand screw gear hob of the present utility model and left-hand screw gear hob respectively, the erection sequence of cutter tooth bar (2) on cutter hub (1) is n, n-1, n-2,3,2,1.At this moment, the circle mill of right-hand screw gear hob is undertaken by single head left-hand screw face, and the circle mill of left-hand screw gear hob is undertaken by the single head right helicoid, and its helical pitch S equates with basic worm that the horizontal relief angle of the side edge that obtains all is the twice of basic worm lead angle.
When Fig. 4 a and Fig. 4 b illustrate carbide chip (3) the left surface grinding of carbide chip (3) the right flank grinding of right-hand screw gear hob of the present utility model and left-hand screw gear hob respectively, when n is odd number (establishing n is 9), the erection sequence of cutter tooth bar (2) on cutter hub (1) is 1,3,5,7,9,2,4,6,8.At this moment, the circle mill of right-hand screw gear hob is undertaken by the double end right helicoid, and the circle mill of left-hand screw gear hob is undertaken by double end left-hand screw face, and its helical pitch S is two ones of basic worm, and the horizontal relief angle of the side edge that obtains all is the lead angle of basic worm.
When Fig. 5 a and Fig. 5 b illustrate carbide chip (3) the left surface grinding of carbide chip (3) the right flank grinding of right-hand screw gear hob of the present utility model and left-hand screw gear hob respectively, when n is even number (establishing n is 10), the erection sequence of cutter tooth bar (2) on cutter hub (1) is 1,4,7,10,3,6,9,2,5,8.At this moment, the circle mill of right-hand screw gear hob is undertaken by three right helicoids, and the circle mill of left-hand screw gear hob is undertaken by three left-hand screw faces, and its helical pitch S is three times of basic worm, and the horizontal relief angle of the side edge that obtains all is the twice of basic worm lead angle.
Claims (2)
1, a kind of assembled carbide alloy scraping gear hob has the right-hand screw angle, by cutter hub (1), be installed in the cutter tooth bar (2) on the cutter hub (1), with the carbide chip (3) that is contained on the cutter tooth bar (2), and the end cap (4) that is positioned at the cutter hub two ends is formed, it is characterized in that having on the cutter hub (1) along garden week erection sequence is 1,2,3, n number cutter tooth bar (2), the carbide chip (3) on this cutter tooth bar (2) have at cutter tooth bar (2) with n, n-1, n-2 ... 2,1 orders are installed in the left surface that grinding goes out on the cutter hub (1) and have when n is odd number (n=9), cutter tooth bar (2) is with 1,3, and 5,7,9,2,4,6,8 orders, when n was even number (n=10), cutter tooth bar (2) was with 1,4,7,10,3,6,9,2,5,8 orders are installed in cutter hub (1) and go up the right flank that grinding goes out.
2, a kind of assembled carbide alloy scraping gear hob has the left-hand screw angle, by cutter hub (1), be installed in the cutter tooth bar (2) on the cutter hub (1), with the carbide chip (3) that is installed on the cutter tooth bar (2), and the end cap (4) that is positioned at the cutter hub two ends is formed, it is characterized in that having on the cutter hub (1) along garden week erection sequence is 1,2,3, n number cutter tooth bar (2), the carbide chip (3) on this cutter tooth bar (2) have carbide chip (3) on cutter tooth bar (2) and have at cutter tooth bar (2) with n, n-1, n-2 ... 2,1 orders are installed in cutter hub (1) and go up the right flank that grinding goes out, with have when n is odd number (n=9), cutter tooth bar (2) is with 1,3,5,7,9,2,4,6,8 orders are when n is even number (n=10), cutter tooth bar (2) is with 1,4,7,10,3,6,9,2,5,8 orders are installed in cutter hub (1) and go up the left surface that grinding goes out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208689 CN86208689U (en) | 1986-11-08 | 1986-11-08 | Assembling gear scraping hob made from hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208689 CN86208689U (en) | 1986-11-08 | 1986-11-08 | Assembling gear scraping hob made from hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86208689U true CN86208689U (en) | 1987-12-05 |
Family
ID=4810728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86208689 Withdrawn CN86208689U (en) | 1986-11-08 | 1986-11-08 | Assembling gear scraping hob made from hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86208689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831481A (en) * | 2014-03-31 | 2014-06-04 | 西安北方光电科技防务有限公司 | Optimization method for positive rake angle gear hob |
| CN105945361A (en) * | 2016-06-02 | 2016-09-21 | 蚌埠学院 | Rack machining tool with assembly glue for solid seal |
-
1986
- 1986-11-08 CN CN 86208689 patent/CN86208689U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831481A (en) * | 2014-03-31 | 2014-06-04 | 西安北方光电科技防务有限公司 | Optimization method for positive rake angle gear hob |
| CN103831481B (en) * | 2014-03-31 | 2016-09-28 | 西安北方光电科技防务有限公司 | A kind of optimization method of positive rake angle gear hob |
| CN105945361A (en) * | 2016-06-02 | 2016-09-21 | 蚌埠学院 | Rack machining tool with assembly glue for solid seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |