CN2068143U - Drill hole wall axial initial cut shank head - Google Patents
Drill hole wall axial initial cut shank head Download PDFInfo
- Publication number
- CN2068143U CN2068143U CN 90203229 CN90203229U CN2068143U CN 2068143 U CN2068143 U CN 2068143U CN 90203229 CN90203229 CN 90203229 CN 90203229 U CN90203229 U CN 90203229U CN 2068143 U CN2068143 U CN 2068143U
- Authority
- CN
- China
- Prior art keywords
- bit body
- bore bit
- hole wall
- initial cut
- utility
- 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.)
- Withdrawn
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- Earth Drilling (AREA)
Abstract
The utility model relates to a drill hole wall axial initial cut drill bit, comprising cutting tools 1, a drill bit body 2, and a powder discharging hole 3. The utility model is characterized in that the cutting tools 1 is welded on the end of the drill bit body 2.; on the circumferential surface, the drill bit body 2 whose a side exposes blades is designed with a support step. The initial cut of the utility model has the advantages of long service life, high efficiency for the initial cut, etc.
Description
The utility model belongs to the mining operation explosive drilling tool.
The slotted eye blasting technique is extensive use in tunnelling and mining at present.CN88204428.1 provides a kind of drill hole wall axial grooving bore bit, ties up to bore bit body head outside seting welding carbide sheet and makes, and the series of products of two swords, three swords, four swords etc. and different-diameter size are arranged.Its weak point is in the grooving process, the easy avalanche of hard metal tip, and simultaneously, if piece occurs falling in the hole, then bore bit body head steel body directly contacts with falling piece, will influence grooving efficient, even damages bore bit.
The purpose of this utility model is to provide a kind of can strengthen edge strength, improves the axial grooving bore bit of drill hole wall of grooving efficient.
The utility model is made up of cutting cutlery 1, bore bit body 2, powder outlet 3, cutting cutlery 1 side direction of welding-on on bore bit body 2 revealed the sword height and is not less than 4 millimeters, it is characterized in that cutting cutlery 1 welding-on on the side face of garden, bore bit body 2 end, its side direction is revealed below sword has a support step on the bore bit body 2.
The utility model can be made the series of products of two swords, three swords, four swords etc. and different-diameter size, and the number of powder outlet 3 and position are then according to concrete needs setting.To be applicable to that the axial grooving bore bit of drill hole wall with grooving in the boring of the bore bit Drilling of 38 millimeters of diameters is an example, cutting cutlery 1 is selected the hard metal tip of in-line for use, specification is 50 * 18 * 8 millimeters, bore bit body 2 is a pancake, cutting cutlery 1 welding-on is in bore bit body 2 end grooves, 38 millimeters of flute length, wide 8 millimeters, high 16～18 millimeters, it is high each 6 millimeters that cutting cutlery 1 reveals sword in bore bit body 2 side direction symmetry, its side direction is revealed under the sword has the support step on the bore bit body 2, and powder outlet 3 has 2, is symmetrically distributed in bore bit body 2 both sides.
Fig. 1 is the utility model front view
Fig. 2 is the utility model lateral view
Fig. 3 is the utility model vertical view
The utility model is owing to cut cutlery 1 welding-on on the side face of garden, bore bit body 2 end, and when in the boring in the grooving process piece of falling being arranged, piece is fallen in fragmentation easily, guarantees smooth grooving.Because design has the support step below the utility model side direction dew sword, has played to increase and has revealed sword intensity, prevents to cut cutlery 1 avalanche, prolongs service life of the bits, the effect of raising grooving efficient.
Claims (1)
- The axial grooving bore bit of a kind of drill hole wall, form by cutting cutlery 1, bore bit body 2, powder outlet 3, cutting cutlery 1 side direction of welding-on on bore bit body 2 revealed the sword height and is not less than 4 millimeters, it is characterized in that cutting cutlery 1 welding-on on the side face of garden, bore bit body 2 end, its side direction is revealed below sword has a support step on the bore bit body 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90203229 CN2068143U (en) | 1990-03-29 | 1990-03-29 | Drill hole wall axial initial cut shank head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90203229 CN2068143U (en) | 1990-03-29 | 1990-03-29 | Drill hole wall axial initial cut shank head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068143U true CN2068143U (en) | 1990-12-26 |
Family
ID=4884462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90203229 Withdrawn CN2068143U (en) | 1990-03-29 | 1990-03-29 | Drill hole wall axial initial cut shank head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364742C (en) * | 1998-03-10 | 2008-01-30 | 希尔蒂股份公司 | Punching tool |
-
1990
- 1990-03-29 CN CN 90203229 patent/CN2068143U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364742C (en) * | 1998-03-10 | 2008-01-30 | 希尔蒂股份公司 | Punching tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |