CN201579462U - Pre-drilling drill bit for wheels - Google Patents
Pre-drilling drill bit for wheels Download PDFInfo
- Publication number
- CN201579462U CN201579462U CN2009203138249U CN200920313824U CN201579462U CN 201579462 U CN201579462 U CN 201579462U CN 2009203138249 U CN2009203138249 U CN 2009203138249U CN 200920313824 U CN200920313824 U CN 200920313824U CN 201579462 U CN201579462 U CN 201579462U
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- drill bit
- cutting edge
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- drilling
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Abstract
The utility model relates to a tooling appliance, in particular to a pre-drilling drill bit for aluminum alloy wheels, which comprises a drillstock and a drill bit. The pre-drilling drill bit is characterized in that a helical chip groove is arranged on the drill bit, tungsten steel blades for cutting are connected by adopting a welding mode, the front end of the drill bit forms a taper angle of 120 degrees, the drill bit forms a step shape, the front end is provided with a primary cutting edge, the diameter of the primary cutting edge is smaller than that of a secondary cutting edge so as to reduce the resistance and the abrasion, the positions of two stages of steps are connected by adopting an angle of 150 degrees, and all the joints are transited by adopting a circular arc. The utility model has the advantages of reasonable structure, abrasion resistance, time saving, labor saving, high working efficiency and the like and is especially suitable for pre-drilling the aluminum alloy wheels with larger batch and larger diameter difference of central shaft holes and cover blockage holes.
Description
Technical field:
The utility model relates to machine equipment, the particularly a kind of large aperture that aluminum-alloy wheel uses, prebored hole drill bit of two-stage step of being used for.
Background technology:
Because light, fuel-efficient, the characteristics such as balance is good, tubeless of aluminum-alloy wheel, China progressively becomes the big producing country of aluminum-alloy wheel.For guaranteeing the crudy of aluminum-alloy wheel, all to remove cast gate before the heat treatment, the effect one that removes cast gate is the positioning and clamping that guarantees to add man-hour, makes it not interfere stuck point; The 2nd, reduce the surplus that centre bore is processed, reduce the time of processing.
The centre bore of aluminum-alloy wheel is contained on the axle on chassis, plays the role of positioning, and its size must meet the requirements of the customers, and in addition, for increasing aesthetic property, all loads onto blanking cover in the centre bore outside, and it is bigger that the diameter of the two differs generally speaking.And the method for removing cast gate before all is the high-speed steel drill boring of using with a kind of diameter, and the surplus when so just causing machined increases, and the mach time increases, and has reduced efficient.In addition, high-speed steel drill very easily weares and teares, and the drill bit after the wearing and tearing is more blunt, can't hole.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, the prebored hole drill bit that provides a kind of wear-resistant, time saving and energy saving aluminum-alloy wheel to use.
The utility model can reach by following measure:
The prebored hole drill bit that a kind of wheel is used comprises drillstock, drill bit, it is characterized in that drill bit is provided with the spirality chip area, and incisory tungsten steel blade adopts welding manner to link to each other.
The utility model chisel edge is 120 ° of cone angles, and chip-breaker is arranged on it, to improve the smear metal ability.
The utility model drill bit is step-like, and front end is the one-level cutting edge, and the diameter of one-level cutting edge is less than the secondary cutting edge, and to reduce resistance and wearing and tearing, two-stage step place adopts 150 ° of angles to connect, and the junction all adopts circular arc to connect.
Advantages such as that the utility model the utlity model has is rational in infrastructure, wear-resistant, time saving and energy saving, operating efficiency height, the diameter that is specially adapted to big in batches, central shaft hole and blanking cover hole differs bigger aluminum-alloy wheel prebored hole.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is further described:
As shown in drawings, the prebored hole drill bit that a kind of wheel is used comprises drillstock 1, drill bit 2, and drillstock 1 adopts Mohs 5# steel to make, drill bit 2 is provided with the spirality chip area, to reduce the boring resistance, incisory tungsten steel blade 3 adopts welding manner to link to each other, and tungsten steel blade replaces high-speed steel, increase anti-wear performance, the front end of drill bit 2 adopts 120 ° of cone angles, and chip-breaker is arranged on it, to improve the smear metal ability.Drill bit 2 is step-like, front end is the one-level cutting edge, the diameter of one-level cutting edge is less than the secondary cutting edge, to reduce resistance and wearing and tearing, two-stage step place adopts 150 ° of angles to connect, the junction all adopts circular arc to connect, and the utlity model has advantages such as rational in infrastructure, wear-resistant, time saving and energy saving, operating efficiency height, and the diameter that is specially adapted to big in batches, central shaft hole and blanking cover hole differs bigger aluminum-alloy wheel prebored hole.
Claims (3)
1. the prebored hole drill bit that wheel is used comprises drillstock, drill bit, it is characterized in that drill bit is provided with the spirality chip area, and incisory tungsten steel blade adopts welding manner to link to each other.
2. the prebored hole drill bit that a kind of wheel according to claim 1 is used is characterized in that chisel edge is 120 ° of cone angles, has chip-breaker on it.
3. the prebored hole drill bit that a kind of wheel according to claim 1 is used is characterized in that drill bit is step-like, and front end is the one-level cutting edge, and the diameter of one-level cutting edge is less than the secondary cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203138249U CN201579462U (en) | 2009-10-31 | 2009-10-31 | Pre-drilling drill bit for wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203138249U CN201579462U (en) | 2009-10-31 | 2009-10-31 | Pre-drilling drill bit for wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201579462U true CN201579462U (en) | 2010-09-15 |
Family
ID=42721455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203138249U Expired - Fee Related CN201579462U (en) | 2009-10-31 | 2009-10-31 | Pre-drilling drill bit for wheels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201579462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900205A (en) * | 2019-12-31 | 2020-03-24 | 佛山市南海安驰铝合金车轮有限公司 | Hub blank pre-drilling machining method and hub machining system applying same |
-
2009
- 2009-10-31 CN CN2009203138249U patent/CN201579462U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900205A (en) * | 2019-12-31 | 2020-03-24 | 佛山市南海安驰铝合金车轮有限公司 | Hub blank pre-drilling machining method and hub machining system applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20111031 |