CN208033740U - A kind of combined knife tool - Google Patents
A kind of combined knife tool Download PDFInfo
- Publication number
- CN208033740U CN208033740U CN201820239678.9U CN201820239678U CN208033740U CN 208033740 U CN208033740 U CN 208033740U CN 201820239678 U CN201820239678 U CN 201820239678U CN 208033740 U CN208033740 U CN 208033740U
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- China
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- reamer
- counterbit
- bit head
- knife tool
- combined knife
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Abstract
The utility model discloses a kind of combined knife tools, including handle of a knife and cutting portion；The cutting portion includes bit head and reamer portion；The bit head has several main cutting edges being evenly distributed and a chisel edge positioned at bit head front end center position；The reamer portion includes several spiral helicine reamer swords extended from the rear end of the bit head to the handle of a knife direction, and the reamer sword is set to the land of the main cutting edge.The cutter can process the pore structure for meeting required precision by a processing step, and process time is greatly shortened, improves processing efficiency.
Description
Technical field
The utility model is related to machine tools technical fields, more particularly to a kind of combined knife tool.
Background technology
In the processing of axle housing retarder mounting surface, have with ten bolt through-holes of retarder fastening bolt cooperation higher
Required precision, tolerance are (0 ,+0.058), and to meet this requirement, common processing technology is to bore, cut with scissors, three step of ream,
These three processing steps are realized with drill bit, reamer and counterbit respectively.
Specifically, pore structure first is processed with drill bit, is limited by drill bit structure, the precision of the pore structure is unable to reach aforementioned
It is required that then cutting off the sheet metal of machined hole wall surface with reamer, the precision that pore structure meets aforementioned bolt through-hole is made to want
It asks, finally processes orifice chamfer with counterbit, to remove boundary burr, and guiding is provided for bolts assemblies.
It is appreciated that in mechanical processing, it is similar for other in addition to the bolt through-hole of above-mentioned axle housing retarder mounting surface
For structure and the pore structure of requirement, procedure of processing is also required to three step as above, this is for the more machine of processing pore structure number
For tool structure, process time is longer, and the purchase cost of cutter and management cost are also higher.
In view of this, how to design a kind of combined knife tool, the process time of pore structure can be shortened, while ensureing that hole is tied
The machining accuracy of structure, is a technical problem that technical personnel in the field need to solve at present.
Utility model content
The purpose of this utility model is to provide a kind of combined knife tool, which can be processed by a processing step
The pore structure for meeting required precision, is greatly shortened process time, improves processing efficiency.
In order to solve the above technical problems, the utility model provides a kind of combined knife tool, including handle of a knife and cutting portion；It is described
Cutting portion includes bit head and reamer portion；The bit head has several main cutting edges being evenly distributed and is located at the brill
One chisel edge at head front end center position；The reamer portion includes several from the rear end of the bit head to the handle of a knife side
To the spiral helicine reamer sword of extension, the reamer sword is set to the land of the main cutting edge.
The utility model provides a kind of combined knife tool, and the cutting portion of the cutter includes bit head and reamer portion；Wherein,
Bit head has several main cutting edges being evenly distributed and a chisel edge positioned at bit head front end center position, is used for
Pore structure is processed on workpiece；Reamer portion includes several spiral helicine reamers extended from the rear end of bit head to handle of a knife direction
Sword, reamer sword are set to the land of main cutting edge, and reamer portion is mainly used for finishing the pore structure that bit head is processed, with full
Sufficient tolerance；As above, which has both the function of existing drill bit and reamer, can once be completed using a kind of cutter
Procedure of processing is saved in the roughing and finishing of pore structure, reduces processing duration, for the more machinery of processing pore structure number
For structure, processing cost can be greatly reduced.
Combined knife tool as described above, the cutting portion further include positioned at the counterbit portion of reamer portion rear end, the counterbit
Portion includes several counterbit blades being evenly distributed.
The cutting portion of the combined knife tool further comprises that the counterbit portion includes several positioned at the counterbit portion of reamer portion rear end
The counterbit blade that item is evenly distributed, for pore structure substantially after processing is completed, process orifice chamfer while removing boundary
Burr, after designing in this way, which has both the function of existing drill bit, reamer and counterbit three simultaneously, further saves
The procedure of processing and processing duration of pore structure, while can reduce the purchase cost and management cost of cutter.
The item number of combined knife tool as described above, the counterbit blade is even number item.
Combined knife tool as described above, the counterbit portion are countersink structure.
Combined knife tool as described above, the main cutting edge have two, and the distribution that is centrosymmetric.
Combined knife tool as described above, the cutting portion further include two circumferentially uniformly distributed and rear ends from bit head to
The spiral helicine land that the handle of a knife direction extends.
The item number of combined knife tool as described above, the reamer sword is even number item, and each main cutting edge corresponds to
Land be equipped at least one reamer sword.
The item number of combined knife tool as described above, the reamer sword is specially two, and the distribution that is centrosymmetric.
Description of the drawings
Fig. 1 provides combined knife tool a kind of front view of specific embodiment by the utility model；
Fig. 2 is the left view of Fig. 1.
Wherein, the one-to-one relationship in Fig. 1 to Fig. 2 between component names and reference numeral is as follows：
Handle of a knife 10, cutting portion 20, bit head 21, main cutting edge 211, chisel edge 212, land 213, reamer portion 22, reamer sword
221, counterbit portion 23, counterbit blade 231.
Specific implementation mode
The core of the utility model is to provide a kind of combined knife tool, which can be processed by a processing step
The pore structure for meeting required precision, is greatly shortened process time, improves processing efficiency.
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
It please refers to Fig.1 and Fig. 2, Fig. 1 provides combined knife tool a kind of front view of specific embodiment by the utility model；
Fig. 2 is the left view of Fig. 1.
In the embodiment, the combined knife tool includes the handle of a knife 10 being wholely set and cutting portion 20, certain actual setting
When, it is also feasible that the design of the two fission, which is reconnected,.
Wherein, cutting portion 20 includes bit head 21 and reamer portion 22.Specifically, bit head 21 has several main cutting edges
211, several main cutting edges 211 are uniformly distributed circumferentially, and the front end center position of bit head 21 has a chisel edge 212；Hinge
Knife portion 22 includes several reamer swords 221, and reamer sword 221 is set to the land of main cutting edge 211, and reamer sword 221 is from bit head 21
Rear end extend in the shape of a spiral to 10 direction of handle of a knife.
What needs to be explained here is that above-mentioned front end refers to the one end for being relatively distant from handle of a knife 10, a left side specially shown in FIG. 1
End, the one end for the relatively close handle of a knife 10 that rear end refers to.
The combined knife tool that the embodiment provides, cutting portion 20 include bit head 21 and reamer portion 22, wherein bit head
21 have several main cutting edges 211 being evenly distributed and a chisel edge 212 positioned at 21 front end center position of bit head, use
In the roughing pore structure on workpiece；Reamer portion 22 includes several and extends from the rear end of bit head 21 to 10 direction of handle of a knife
Spiral helicine reamer sword 221, reamer sword 221 are set to the land of main cutting edge 211, and reamer portion 22 is mainly used for adding bit head 21
The pore structure of work is finished, to meet tolerance；As above, which has both the work(of existing drill bit and reamer
Can, a kind of cutter can be used once to complete the roughing and finishing of pore structure, save procedure of processing, reduce processing duration,
For the more mechanical structure of processing pore structure number, processing cost can be greatly reduced.
Specifically, bit head 21 is on workpiece, such as axle housing retarder mounting surface, when roughing pore structure, mainly according to
What is leaned on is its main cutting edge 211 and chisel edge 212, wherein the processing diameter in hole determines by 211 size of main cutting edge, actual design
When, the size of bit head 21 can be designed according to the size of required pore structure on workpiece.After bit head 21 processes pore structure,
Hole wall is finished using reamer portion 22.
Further, the cutting portion 20 of the cutter further includes positioned at the counterbit portion 23 of 22 rear end of reamer portion, the counterbit portion 23
The counterbit blade 231 being evenly distributed including several.
Specifically, the counterbit portion 23 be countersink structure, with after reamer portion 22 finishes pore structure in hole
Mouth processes chamfering, to remove boundary burr and provide guiding for bolts assemblies.
After designing in this way, which has both the function of existing drill bit, reamer and counterbit three simultaneously, further saves
The procedure of processing and processing duration of pore structure have been saved, while the purchase cost and management cost of cutter can be reduced.
In specific scheme, the item number of the counterbit blade in counterbit portion 23 is even number item, easy to process in this way, circumferentially right
After claiming distribution, the structure in counterbit portion 23 is centrosymmetric with respect to the central axis of cutter, it is easy to accomplish the processing of orifice chamfer is wanted
It asks.
Specifically, the bevel angle in counterbit portion 23 is 90 degree or so, certainly, 60 degree can be also set as according to process requirements in practice
Or 75 degree or 120 degree etc..
More specifically, the item number of the counterbit blade 231 in counterbit portion 23 is specially four；According to experiment and analogue simulation, four
Counterbit blade 231 disclosure satisfy that process requirements.
In specific scheme, main cutting edge 211 is two, and the distribution that is centrosymmetric.Here central symmetry distribution refers to
Be opposite cutter central axis, be hereafter identical with this, repeat no more.
On this basis, cutting portion 20 further includes two circumferentially uniformly distributed and from the rear end of bit head 21 to 10 direction of handle of a knife
The spiral helicine land 213 extended.
The setting of land 213 can make to contribute to control there are gap between bit head 21 and the hole wall in machined hole to rub
Wiping and frictional heat, while being additionally favorable for the stability of drilling.
On this basis, the item number of reamer sword 221 is even number item, and 211 corresponding land of each main cutting edge is equipped with extremely
A few reamer sword 221.
In illustrated scheme, the item number of reamer sword 221 is specially two, and the distribution that is centrosymmetric.According to experiment and emulation
Simulation, two reamer swords 221 disclosure satisfy that process requirements.
Certainly, in actual setting, if space structure allows, 211 corresponding land of each main cutting edge may also set up two
Reamer sword 221.
A kind of combined knife tool provided by the utility model is described in detail above.It is used herein specifically
A example is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to understand this
The method and its core concept of utility model.It should be pointed out that for those skilled in the art, not departing from
Under the premise of the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification
It falls into the protection domain of the utility model claims.
Claims (8)
1. a kind of combined knife tool, including handle of a knife (10) and cutting portion (20)；It is characterized in that, the cutting portion (20) includes boring
Head (21) and reamer portion (22)；The bit head (21) has several main cutting edges (211) being evenly distributed and is located at
One chisel edge (212) at bit head (21) the front end center position；The reamer portion (22) includes several from the drill bit
The spiral helicine reamer sword (221) that the rear end in portion (21) extends to the handle of a knife (10) direction, the reamer sword (221) are set to institute
State the land of main cutting edge (211).
2. combined knife tool according to claim 1, which is characterized in that the cutting portion (20) further includes being located at reamer portion
(22) the counterbit portion (23) of rear end, the counterbit portion (23) include several counterbit blades (231) being evenly distributed.
3. combined knife tool according to claim 2, which is characterized in that the item number of the counterbit blade (231) is even number
Item.
4. combined knife tool according to claim 3, which is characterized in that the counterbit portion (23) is countersink structure.
5. according to claim 1-4 any one of them combined knife tools, which is characterized in that the main cutting edge (211) has two
Item, and the distribution that is centrosymmetric.
6. combined knife tool according to claim 5, which is characterized in that the cutting portion (20) further includes that two circumferential directions are equal
Cloth and spiral helicine land (213) from the rear end of bit head (21) to the handle of a knife (10) direction that extend from.
7. combined knife tool according to claim 6, which is characterized in that the item number of the reamer sword (221) is even number item,
And each the corresponding land of the main cutting edge (211) is equipped at least one reamer sword (221).
8. combined knife tool according to claim 7, which is characterized in that the item number of the reamer sword (221) is specially two
Item, and the distribution that is centrosymmetric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820239678.9U CN208033740U (en) | 2018-02-09 | 2018-02-09 | A kind of combined knife tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820239678.9U CN208033740U (en) | 2018-02-09 | 2018-02-09 | A kind of combined knife tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208033740U true CN208033740U (en) | 2018-11-02 |
Family
ID=63952891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820239678.9U Active CN208033740U (en) | 2018-02-09 | 2018-02-09 | A kind of combined knife tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208033740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247115A (en) * | 2018-02-09 | 2018-07-06 | 广西汽车集团有限公司 | A kind of combined knife tool |
-
2018
- 2018-02-09 CN CN201820239678.9U patent/CN208033740U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247115A (en) * | 2018-02-09 | 2018-07-06 | 广西汽车集团有限公司 | A kind of combined knife tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Jianzhao Inventor after: Zheng Xingteng Inventor after: Wang Chuanchuan Inventor after: Chen Xuzhen Inventor after: Zhang Yanzhao Inventor after: Zhang Peng Inventor after: Chen Hong Inventor before: Liu Jianzhao Inventor before: Zheng Xingteng Inventor before: Wang Chuanchuan Inventor before: Chen Xuzhen Inventor before: Zhang Yanzhao Inventor before: Zhang Peng Inventor before: Chen Hong |
|
| CB03 | Change of inventor or designer information |