CN108972901A - A kind of wall opening apparatus - Google Patents
A kind of wall opening apparatus Download PDFInfo
- Publication number
- CN108972901A CN108972901A CN201810784960.XA CN201810784960A CN108972901A CN 108972901 A CN108972901 A CN 108972901A CN 201810784960 A CN201810784960 A CN 201810784960A CN 108972901 A CN108972901 A CN 108972901A
- Authority
- CN
- China
- Prior art keywords
- tubular cover
- cutting
- cutting body
- roof
- wall
- 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.)
- Pending
Links
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work
Abstract
The present invention relates to a kind of wall opening apparatus, including connecting shaft, spitting drill, tubular cover, tubular cover is covered on outside spitting drill and is coaxially mounted in connecting shaft with spitting drill, the length greater than the tubular cover of the length of the spitting drill, the tubular cover includes lateral wall, inner sidewall, roof, cut tooth, bottom wall, the cutting tooth is arranged on the roof, being provided on the inner sidewall has width in the tubular cover radial direction, in the tubular cover axial direction with length and in cutting body of the tubular cover circumferential direction with thickness, the channel of chip removal that the roof and bottom wall is connected is provided in the cylindrical cover body.Technical solution of the present invention can not need to stop midway and topple over the intracorporal waste material of cylindrical cover when hole making drill carries out wall aperture with continuous work.
Description
Technical field
The present invention relates to a kind of hole making drill, especially a kind of wall opening apparatus.
Background technique
Currently, well known wall opening apparatus includes connecting shaft, spitting drill, tubular cover, tubular cover is covered on outside spitting drill
And it is coaxially mounted in connecting shaft with spitting drill, the length phase of this hole making drill aperture depth and tubular cover in use
It just needs hole making drill to exit wall simultaneously and pours out the intracorporal column waste material of cylindrical cover and could continue to punch, and waste material can be frequent
It is stuck in cylindrical cover body and is not easy to pour out, substantially reduce the efficiency of construction.
Summary of the invention
Based on the above issues, the present invention provides a kind of wall opening apparatus, can not need to stop midway with continuous work and topple over
The intracorporal waste material of cylindrical cover.
To achieve the above object, the present invention provides the following technical scheme that a kind of wall opening apparatus, including it is connecting shaft, fixed
Position brill, tubular cover, tubular cover are covered on outside spitting drill and are coaxially mounted in connecting shaft with spitting drill, the length of the spitting drill
The length greater than the tubular cover of degree, the tubular cover include lateral wall, inner sidewall, roof, cutting tooth, bottom wall, institute
Cutting tooth to be stated to be arranged on the roof, being provided on the inner sidewall has width in the tubular cover radial direction,
The tubular cover axial direction has the cutting body of thickness, the tubular with length and in the tubular cover circumferential direction
The channel of chip removal that the roof and bottom wall is connected is provided in cover.
By using above-mentioned technical proposal, when hole making drill carries out aperture work, tubular cover drives as motor rotates
Cutting body rotation, tubular cover cut metope while the intracorporal wall of cylindrical cover ground and pass through channel of chip removal by
The bottom wall of tubular cover is discharged, and reaches hole making drill and can not need to stop midway with continuous work and topples over the intracorporal waste material of cylindrical cover.
The present invention is further arranged: the length of the cutting body is identical as the length of the tubular cover.
By using above-mentioned technical proposal, the joint face of cutting body and inner sidewall increases, and improves the intensity of cutting body.
The present invention is further arranged: the width of the cutting body be greater than or equal to the inner sidewall away from the spitting drill away from
From.
One week cylinder can be ground as soon as cutting body rotates circle under the drive of tubular cover by using above-mentioned technical proposal
The wall not cut to by tubular cover in shape cover, while powder is discharged by channel of chip removal, it thus can be in cylindrical cover
Body thoroughly grinds the part not being cut in tubular cover and is discharged from channel of chip removal while cutting, preferably play out
Hole device can not need to stop midway with continuous work topples over the intracorporal waste material of cylindrical cover, improves construction efficiency.
The present invention is further arranged: the width of the cutting body is identical as the internal diameter of tubular cover, the cutting body and institute
Tubular cover is stated to be arranged coaxially.
By using above-mentioned technical proposal, cutting body rotates half-turn under the drive of tubular cover, can grind one week cylinder
The wall not cut to by tubular cover in shape cover can more rapidly and thoroughly grind the portion not being cut in cylindrical cover body
Point, improve aperture efficiency, moreover it is possible to which the connection area for increasing cutting body Yu tubular cover further increases the intensity of cutting body.
The present invention is further arranged: the cutting body includes cutting face, two sides, and the cutting face is in the cutting body phase
For one end of roof, both ends of the two sides in the cutting body relative to the inner sidewall, the cutting face is in cambered surface
Setting, and the cutting face correspond to the positions of the cutting body central axes at a distance from the roof less than the cutting face pair
It should be at a distance from the junction of the inner sidewall and the roof.
By using above-mentioned technical proposal, when cutting body carries out grinding work, the top in cutting face first contacts wall, into
And gradually entire cutting face enters grinding work, wall will not be contacted simultaneously by making to cut entire bevel, reduce cutting face and wall
Just contact area when contact greatly reduces the frictional force for the instantaneous touch that the two generates, and plays protection cutting body, increases cutting
The effect of the service life of body.
The present invention is further arranged: the cutting body is in double-spiral structure setting and the hand of spiral and the tubular cover
Direction of rotation is identical.
By using above-mentioned technical proposal, make the joint face of cutting body and inner sidewall twist, cutting face can be dispersed
The frictional force generated with wall, is hardly damaged cutting body and the junction of tubular cover, increases the strong of cutting body to play
Degree, the hand of spiral is identical as the direction of rotation of the tubular cover, makes two sides helically face and the mistake rotated in cutting body
The spiral centrifugal power moved towards towards bottom wall is generated in journey.
The present invention is further arranged: the roof and bottom wall is connected along the side in the channel of chip removal.
By using above-mentioned technical proposal, roof and bottom wall is connected along side in channel of chip removal, and cutting body is in rotary course
Middle ground waste can be discharged with the centrifugal force of channel of chip removal screw type to bottom wall direction, play better chip removal effect.
The present invention is further arranged: the axial direction of the cutting body is provided with the positioning passed through for spitting drill and drills through
Road, the spitting drill channel are arranged coaxially with the cutting body.
By using above-mentioned technical proposal, installing and using for spitting drill is not influenced.
The present invention is further arranged: the cutting face is provided with cutting edge in tubular cover direction of rotation side.
By using above-mentioned technical proposal, with the rotation of cutting body, can be faster and more effective on cutting face with cutting edge
Grinding tubular cover in wall, reduce the abrasion of cutting body, increase cutting body service life and improve cutting body work
Make efficiency.
The specific embodiment of the invention is described with reference to the accompanying drawings and embodiments.
Detailed description of the invention
Fig. 1 is the perspective view of the embodiment of the present invention；
Fig. 2 is top view of the embodiment of the present invention；
Fig. 3 is the structure chart of tubular cover of the present invention.
1. it is fixed that 11. inner sidewall of tubular cover, 12. lateral wall 13. cuts 14. roof of tooth, 15. bottom wall, 2. connecting shaft 3.
Bore 4. cutting body, 41. cutting face, 42. side, 43. spitting drill channel, 411. cutting edge, 5. channel of chip removal in position.
Specific embodiment
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that creative contribution is made to the present embodiment after reading this specification, but as long as in this hair
All by the protection of Patent Law in bright scope of the claims.
Referring to attached drawing 1-3, the present invention is a kind of wall opening apparatus, including connecting shaft, spitting drill, tubular cover, cylindrical cover
Body is covered on outside spitting drill and is coaxially mounted in connecting shaft with spitting drill, and the length of the spitting drill is greater than the tubular cover
Length, the tubular cover includes lateral wall, inner sidewall, roof, cutting tooth, bottom wall, and cutting tooth setting is on the top
On wall, being provided on the inner sidewall has width in the tubular cover radial direction, in the tubular cover axial direction
There is the cutting body of thickness with length and in the tubular cover circumferential direction, be provided with described in conducting in the cylindrical cover body
The channel of chip removal of roof and bottom wall, when hole making drill carries out aperture work, tubular cover drives cutting body to revolve as motor rotates
Turn, the intracorporal wall of cylindrical cover is ground while tubular cover cuts metope and be discharged by channel of chip removal, is reached
Hole making drill can not need to stop midway with continuous work topples over the intracorporal waste material of cylindrical cover.
The length of cutting body of the present invention can be preferred less than the length of tubular cover or other length, the present embodiment
Further setting: the length of the cutting body is identical as the length of the tubular cover, and the joint face of cutting body and inner sidewall increases
Add, improves the intensity of cutting body.
The present embodiment is further arranged: the width of the cutting body is greater than or equal to the inner sidewall away from the spitting drill
Distance can grind one week and not cut by tubular cover in cylindrical cover body as soon as cutting body rotates circle under the drive of tubular cover
The wall arrived, while powder is discharged by channel of chip removal, thus can while tubular cover is cut thorough sand cylinder
The part that is not cut in shape cover is simultaneously discharged from channel of chip removal, and playing hole making drill can not need to stop midway with continuous work
Topple over the intracorporal waste material of cylindrical cover, improves construction efficiency.
The present embodiment is further arranged: the width of the cutting body is identical as the internal diameter of tubular cover, the cutting body with
The tubular cover is arranged coaxially, and cutting body rotates half-turn under the drive of tubular cover, can grind one week tubular cover
The wall not cut to by tubular cover inside can more rapidly and thoroughly grind the part not being cut in cylindrical cover body, mention
High aperture efficiency, moreover it is possible to which the connection area for increasing cutting body Yu tubular cover further increases the intensity of cutting body.
The cutting face of the invention can be plane or other forms, and the present embodiment is preferably further arranged: described
Cutting body includes cutting face, two sides, and the one end of the cutting face in the cutting body relative to roof, the two sides are in institute
Both ends of the cutting body relative to the inner sidewall are stated, the cutting face is arranged in cambered surface, and cuts described in the correspondence of the cutting face
Cut the positions of the body central axes junction and the top with the inner sidewall more corresponding than the cutting face at a distance from the roof
The distance of wall is small, and when cutting body carries out grinding work, the top in cutting face first contacts wall, so gradually entire cutting face into
Entering to grind work, wall will not be contacted simultaneously by making to cut entire bevel, contact area when just contacting of cutting face and wall is reduced,
The frictional force for substantially reducing the instantaneous touch that the two generates, plays protection cutting body, increases the effect of the service life of cutting body.
The hand of spiral of cutting body of the present invention can be reversed with the tubular cover, and the present embodiment is preferably further
Be arranged: the cutting body is arranged in double-spiral structure and the hand of spiral is identical as the direction of rotation of the tubular cover, makes to cut
The joint face of body and inner sidewall twist, can disperse the frictional force in cutting face and wall generation, make cutting body and cylindrical cover
The junction of body is hardly damaged, to play the intensity for increasing cutting body, the rotation side of the hand of spiral and the tubular cover
To identical, two sides is made helically face and to generate the spiral centrifugal power moved towards towards bottom wall during cutting body rotation.
The present embodiment is further arranged: the roof and bottom wall, channel of chip removal is connected along the side in the channel of chip removal
Roof and bottom wall is connected along side, ground waste can be with the centrifugation of channel of chip removal screw type in rotary course for cutting body
Power is discharged to bottom wall direction, plays better chip removal effect.
Spitting drill of the present invention may be provided on the cutting body, and the present embodiment is preferably further arranged: described to cut
The axial direction for cutting body is provided with the spitting drill channel passed through for spitting drill, the spitting drill channel and the cutting body in same
Axis setting, does not influence installing and using for spitting drill.
The present embodiment is further arranged: the cutting face is provided with cutting edge in tubular cover direction of rotation side,
With the rotation of cutting body, the wall in grinding tubular cover that can be faster and more effective on cutting face with cutting edge, reduction is cut
The abrasion for cutting body increases the service life of cutting body and improves the working efficiency of cutting body.
Claims (9)
1. a kind of wall opening apparatus, including connecting shaft, spitting drill, tubular cover, tubular cover cover on spitting drill it is outer and with positioning
Brill is coaxially mounted in connecting shaft, the length greater than the tubular cover of the length of the spitting drill, the tubular cover packet
Lateral wall, inner sidewall, roof, cutting tooth, bottom wall are included, the cutting tooth is arranged on the roof, it is characterised in that: in described
Be provided on side wall the tubular cover radial direction have width, the tubular cover axial direction have length and
The tubular cover circumferential direction has the cutting body of thickness, and the conducting roof and bottom wall are provided in the cylindrical cover body
Channel of chip removal.
2. wall opening apparatus according to claim 1, it is characterised in that: the length of the cutting body and the tubular cover
Length it is identical.
3. wall opening apparatus according to claim 1, it is characterised in that: the width of the cutting body is greater than or equal to described
Distance of the inner sidewall away from the spitting drill.
4. wall opening apparatus according to claim 3, it is characterised in that: the width of the cutting body is interior with tubular cover
Diameter is identical, and the cutting body is arranged coaxially with the tubular cover.
5. wall opening apparatus according to claim 4, it is characterised in that: the cutting body includes cutting face, two sides, institute
The one end of cutting face in the cutting body relative to roof is stated, the two sides are in the cutting body relative to the inner sidewall
Both ends, the cutting face in cambered surface be arranged, and the cutting face correspond to the cutting body central axes position and the roof
The distance junction with the inner sidewall more corresponding than the cutting face with it is small at a distance from the roof.
6. wall opening apparatus according to claim 4 or 5, it is characterised in that: the cutting body is arranged in double-spiral structure
And the hand of spiral is identical as the direction of rotation of the tubular cover.
7. wall opening apparatus according to claim 6, it is characterised in that: the channel of chip removal is along described in the conducting of the side
Roof and bottom wall.
8. wall opening apparatus according to claim 4, it is characterised in that: the axial direction of the cutting body be provided with for
The spitting drill channel that spitting drill passes through, the spitting drill channel are arranged coaxially with the cutting body.
9. wall opening apparatus according to claim 5, it is characterised in that: the cutting face is in tubular cover rotation side
Side is provided with cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784960.XA CN108972901A (en) | 2018-07-17 | 2018-07-17 | A kind of wall opening apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784960.XA CN108972901A (en) | 2018-07-17 | 2018-07-17 | A kind of wall opening apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108972901A true CN108972901A (en) | 2018-12-11 |
Family
ID=64549488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810784960.XA Pending CN108972901A (en) | 2018-07-17 | 2018-07-17 | A kind of wall opening apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108972901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064739A (en) * | 2019-05-30 | 2019-07-30 | 广西玉柴机器股份有限公司 | A kind of sand mold drill bit |
| CN117381631A (en) * | 2023-10-31 | 2024-01-12 | 中建三局集团有限公司 | Grooving device for house building hydropower pipeline layout and working method thereof |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524218U (en) * | 1991-08-06 | 1993-03-30 | 三菱マテリアル株式会社 | Drilling tool |
| US5312207A (en) * | 1991-05-08 | 1994-05-17 | Famag-Werkzeugfabrik Friedr. Aug. Muhylhoff | Cylindrical bit |
| DE19702423A1 (en) * | 1997-01-24 | 1998-08-06 | Famag Werkzeugfabrik Friedr Au | Cylinder head drill |
| CN2513702Y (en) * | 2002-01-19 | 2002-10-02 | 乐清市中天工具有限公司 | Electric drill |
| DE102007002530A1 (en) * | 2006-01-26 | 2007-08-02 | Wolfcraft Gmbh | Drilling bit with cylindrical head has peripheral teeth formed by rectangular notches with side walls forming machining surfaces and cutting edges |
| CN200991965Y (en) * | 2006-12-22 | 2007-12-19 | 施希文 | Perforator |
| US20080050190A1 (en) * | 2006-08-23 | 2008-02-28 | Horst Miebach Gmbh | Wood drill bit |
| CN201158071Y (en) * | 2008-02-11 | 2008-12-03 | 臧琛瑶 | Hole making drill |
| CN201579853U (en) * | 2009-12-01 | 2010-09-15 | 上海华灵工具厂 | Butterfly-shaped woodworking flat drill |
| CN201979137U (en) * | 2010-12-14 | 2011-09-21 | 上海华普汽车模具制造有限公司 | Drill bit for foam real model |
| CN202162878U (en) * | 2011-07-31 | 2012-03-14 | 王林 | Drill suitable for drilling holes in concrete |
| CH705963A1 (en) * | 2012-01-06 | 2013-07-15 | Schrag Blech Und Elementbau R | Milling head structure mounted in propelling machine e.g. drilling machine, has main cutting edge portion that is set back in proximal direction, relative to distal end of cylindrical jacket surface portion |
| CN203887977U (en) * | 2014-06-27 | 2014-10-22 | 张德树 | Woodworking hole opener |
| CN204603391U (en) * | 2015-02-28 | 2015-09-02 | 北汽福田汽车股份有限公司 | A kind of Hole enlarging drill bushing and there is the composite drill of this Hole enlarging drill bushing |
| CN205466620U (en) * | 2016-01-04 | 2016-08-17 | 上海绿幽环保设备有限公司 | Gimlet and mould thereof |
| CN206898438U (en) * | 2017-07-05 | 2018-01-19 | 胡时安 | A kind of hole making drill |
| CN108080680A (en) * | 2017-12-15 | 2018-05-29 | 潍坊江钢机械有限公司 | Tapping machine cutter head with center positioning device |
| CN209141133U (en) * | 2018-07-17 | 2019-07-23 | 温州市人民医院 | A kind of wall opening apparatus |
-
2018
- 2018-07-17 CN CN201810784960.XA patent/CN108972901A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5312207A (en) * | 1991-05-08 | 1994-05-17 | Famag-Werkzeugfabrik Friedr. Aug. Muhylhoff | Cylindrical bit |
| JPH0524218U (en) * | 1991-08-06 | 1993-03-30 | 三菱マテリアル株式会社 | Drilling tool |
| DE19702423A1 (en) * | 1997-01-24 | 1998-08-06 | Famag Werkzeugfabrik Friedr Au | Cylinder head drill |
| ES2151221T3 (en) * | 1997-01-24 | 2000-12-16 | Famag Werkzeugfabrik Friedrich | CYLINDRICAL HEAD DRILL. |
| CN2513702Y (en) * | 2002-01-19 | 2002-10-02 | 乐清市中天工具有限公司 | Electric drill |
| DE102007002530A1 (en) * | 2006-01-26 | 2007-08-02 | Wolfcraft Gmbh | Drilling bit with cylindrical head has peripheral teeth formed by rectangular notches with side walls forming machining surfaces and cutting edges |
| US20080050190A1 (en) * | 2006-08-23 | 2008-02-28 | Horst Miebach Gmbh | Wood drill bit |
| CN200991965Y (en) * | 2006-12-22 | 2007-12-19 | 施希文 | Perforator |
| CN201158071Y (en) * | 2008-02-11 | 2008-12-03 | 臧琛瑶 | Hole making drill |
| CN201579853U (en) * | 2009-12-01 | 2010-09-15 | 上海华灵工具厂 | Butterfly-shaped woodworking flat drill |
| CN201979137U (en) * | 2010-12-14 | 2011-09-21 | 上海华普汽车模具制造有限公司 | Drill bit for foam real model |
| CN202162878U (en) * | 2011-07-31 | 2012-03-14 | 王林 | Drill suitable for drilling holes in concrete |
| CH705963A1 (en) * | 2012-01-06 | 2013-07-15 | Schrag Blech Und Elementbau R | Milling head structure mounted in propelling machine e.g. drilling machine, has main cutting edge portion that is set back in proximal direction, relative to distal end of cylindrical jacket surface portion |
| CN203887977U (en) * | 2014-06-27 | 2014-10-22 | 张德树 | Woodworking hole opener |
| CN204603391U (en) * | 2015-02-28 | 2015-09-02 | 北汽福田汽车股份有限公司 | A kind of Hole enlarging drill bushing and there is the composite drill of this Hole enlarging drill bushing |
| CN205466620U (en) * | 2016-01-04 | 2016-08-17 | 上海绿幽环保设备有限公司 | Gimlet and mould thereof |
| CN206898438U (en) * | 2017-07-05 | 2018-01-19 | 胡时安 | A kind of hole making drill |
| CN108080680A (en) * | 2017-12-15 | 2018-05-29 | 潍坊江钢机械有限公司 | Tapping machine cutter head with center positioning device |
| CN209141133U (en) * | 2018-07-17 | 2019-07-23 | 温州市人民医院 | A kind of wall opening apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064739A (en) * | 2019-05-30 | 2019-07-30 | 广西玉柴机器股份有限公司 | A kind of sand mold drill bit |
| CN117381631A (en) * | 2023-10-31 | 2024-01-12 | 中建三局集团有限公司 | Grooving device for house building hydropower pipeline layout and working method thereof |
| CN117381631B (en) * | 2023-10-31 | 2024-04-02 | 中建三局集团有限公司 | Grooving device for house building hydropower pipeline layout and working method thereof |
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