CN103846989A - Chopping knife - Google Patents
Chopping knife Download PDFInfo
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- CN103846989A CN103846989A CN201210517558.8A CN201210517558A CN103846989A CN 103846989 A CN103846989 A CN 103846989A CN 201210517558 A CN201210517558 A CN 201210517558A CN 103846989 A CN103846989 A CN 103846989A
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- screw thread
- chopper
- section
- conical section
- truncted
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Abstract
The invention provides a chopping knife. The chopping knife comprises a threaded conical section and a threaded truncated conical section, wherein the threaded conical section is provided with a head part and a tail part; the threaded truncated conical section is provided with a first end part with a smaller diameter and a second end part with a larger diameter, the first end part is connected with the tail part, the diameter of the first end part and the diameter of the tail part are equal, and the taper angle of the threaded truncated conical section is greater than the taper angle of the threaded conical section; the chopping knife additionally comprises a threaded cylindrical section which is connected with the threaded truncated conical section, wherein the diameter of the cylindrical section and the diameter of the second end part are equal. The threaded truncated conical section can expand wood to enable the wood to be easily cracked, the threaded cylindrical section can continuously expand the wood, the size and the weight of a conical head are not obviously increased, the product cost is reduced and the chopping knife is convenient to use.
Description
Technical field
The present invention relates to the chopper that a kind of wood-split machine uses, especially screw thread chopper.
Background technology
Wood-split machine, for large-scale round log being split to the little small-sized timber for being more suitable for using, is applied very extensive.Chopper is as the working head of wood-split machine, most important for wood-split machine.Conventional have chopper to have two kinds, and one is wedge shape chopper, and one is screw thread chopper.The similar axe of wedge shape chopper, workpiece to be rived, the wood-split machine of installing wedge shape chopper must offer the enough power of chopper just can make chopper that workpiece is rived, therefore, this type of wood-split machine conventionally use gasoline as power, cylinder as transmission mechanism, this causes wood-split machine bulky, weight is extraordinary, carrying inconvenience, is used inconvenience.Screw thread chopper drives rotation by motor, and comparatively speaking, wood-split machine small volume, the weight of installing screw thread chopper are lower, easy to use.It is conical that the profile of common screw thread chopper is, and in conical screw thread chopper precession workpiece process, is easy to screw out a conical hole in workpiece, is but difficult to workpiece to rive.
Summary of the invention
For overcoming the defect of prior art, problem to be solved by this invention is to provide a kind of easily by the screw thread chopper of workpiece chopper.
For addressing the above problem, technical scheme of the present invention is:
A kind of chopper, described chopper comprises: screw thread conical section, described screw thread conical section has head and afterbody; Screw thread truncted cone section, described screw thread truncted cone section has first end and the larger the second end of diameter that diameter is less, described first end and described afterbody be connected and both diameters identical, the cone angle of described screw thread truncted cone section is greater than the cone angle of described screw thread conical section; Described chopper also comprises the threaded circular shell of column being connected with described screw thread truncted cone section, and the diameter of described cylindrical section is identical with the diameter of described the second end.
Preferably, the cone angle of described screw thread conical section is more than or equal to 15 degree, is less than or equal to 35 degree.
Preferably, the cone angle of described screw thread conical section is 25 degree.
Preferably, the cone angle of described screw thread truncted cone section is more than or equal to 36 degree, is less than or equal to 56 degree.
Preferably, the cone angle of described screw thread truncted cone section is 46 degree.
Preferably, the screw thread of described screw thread conical section, described screw thread truncted cone section, described threaded circular shell of column is along connecing.
Preferably, described chopper is one-body molded.
Preferably, at least part of hollow of described chopper.
Preferably, described screw thread truncted cone section hollow.
Preferably, the axial length of described screw thread conical section, described screw thread truncted cone section, described threaded circular shell of column reduces successively.
Compared with prior art, chopper of the present invention comprises screw thread conical section and screw thread truncted cone section, the cone angle of truncted cone section is greater than the cone angle of conical section, first contact workpiece compared with the conical section of small-angle and can be easy to creep into workpiece, subsequently, the truncted cone section precession workpiece that cone angle is larger, because the cone angle of truncted cone section is greater than the cone angle of conical section, splits thereby truncted cone section expansible wood is beneficial to wood.Especially, chopper of the present invention also comprises the threaded circular shell of column being connected with screw thread truncted cone section, and the diameter of this cylindrical section is suitable with the outside diameter of truncted cone section, the continuable wood that opens, and can obviously not increase the volume and weight of conehead, thereby reduce product cost, easy to use.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the invention will be further described.
Fig. 1 is the profile of the screw thread chopper that provides of first embodiment of the invention.
Fig. 2 is the top view of the chopper of screw thread shown in Fig. 1.
Wherein,
1 chopper 6 threaded circular shell of column 12 first ends
2 screw thread conical section 8 head 14 the second ends
4 screw thread truncted cone section 10 afterbody 16 installing holes
The specific embodiment
Refer to Fig. 1, the chopper 1 of the present embodiment is the screw thread chopper of rotation under power source drives, and comprises the screw thread conical section 2, screw thread truncted cone section 4 and the threaded circular shell of column 6 that connect in turn.
Screw thread conical section 2 has head 8 and afterbody 10.Wherein, head 8 is cone points.
The cone angle of screw thread conical section 2 is less, in the easier precession workpiece of chopper 1; If but the cone angle of screw thread conical section 2 is too little, the intensity of screw thread conical section may be not.In the present embodiment, preferred, the cone angle of screw thread conical section 2 is more than or equal to 15 degree, is less than or equal to 35 degree.Preferred, the cone angle of screw thread conical section 2 is 25 degree.So arrange, can make screw thread conical section 2 under the enough prerequisite of intensity smoothly in precession workpiece.
Screw thread truncted cone section 4 has first end 12 and the larger the second end 14 of diameter that diameter is less, the afterbody 10 of first end 12 and screw thread conical section 2 be connected and both diameters identical, the cone angle beta of screw thread truncted cone section 4 is greater than the cone angle of screw thread conical section 2.
When after the smooth precession workpiece of cone point of screw thread conical section 2, if the cone angle of screw thread truncted cone section equates with the cone angle of screw thread conical section, the global shape that is chopper is taper shape, and so whole chopper very likely screws out a hole suitable with its volume and is difficult to workpiece to split on workpiece.Therefore, in the present embodiment, the cone angle beta of screw thread truncted cone section 4 is greater than the cone angle of screw thread conical section 2, thereby in screw thread truncted cone section 4 except the first end 12 being connected with the afterbody 10 of screw thread conical section 2, the diameter of remainder is all greater than screw thread conical section 2, in the time that screw thread truncted cone section 4 contacts workpiece after screw thread conical section 2, thereby being beneficial to wood, the larger truncted cone section 4 expansible wood of diameter split.Preferably, the cone angle beta of screw thread truncted cone section 4 is more than or equal to 36 degree, is less than or equal to 56 degree.Preferred, the cone angle of described screw thread truncted cone section is 46 degree.Thus, screw thread truncted cone section 4 can make smoothly wood split and can obviously not increase the volume of whole chopper 2
Threaded circular shell of column 6 is connected with screw thread truncted cone section 4, and the diameter of threaded circular shell of column 6 is identical with the diameter of the second end 14 of screw thread truncted cone section 4.Thus, what threaded circular shell of column 6 continued after screw thread truncted cone section 4 opens wood, and can obviously not increase the volume and weight of conehead, thereby reduces product cost, easy to use.
Referring to Fig. 2, threaded circular shell of column 6 is connected with the output shaft (not shown) of wood-split machine, thereby chopper 1 drives backspin then the workpiece of riving at output shaft.Concrete, threaded circular shell of column 6 is provided with installing hole 16, and the output shaft of wood-split machine is connected with chopper 1 by installing hole 16.Output shaft and installing hole 16 can connect by screw thread, also can interference fit, also can connect by various keys.Preferably, threaded circular shell of column 6 with output shaft except being connected by installing hole 16, both also connect by triangle flange, concrete, the side that threaded circular shell of column 6 deviates from screw thread conical section 2 is provided with three draw-in grooves 18 that equi-angularly space is opened, and three pawls of triangle flange (not shown) are connected by screw respectively with after three draw-in groove 18 close-fittings again, and the centre bore of triangle flange is threaded with after output shaft close-fitting again, thus, chopper and output shaft are connected firmly.
In the present embodiment, the screw thread conical section 2 of chopper 1, screw thread truncted cone section 4, threaded circular shell of column 6 are one-body molded.Thus, no matter integrated chopper 1 is driven clockwise to be still rotated counterclockwise, and all can not have loosening phenomenon, and integrated chopper 1 is easily manufactured between parts, without extra installation action, easy to assembly.Certainly, screw thread conical section 2, screw thread truncted cone section 4, separately manufacture of threaded circular shell of column 6, assembling moulding also can.
In the present embodiment, the screw thread of the screw thread conical section 2 of chopper 1, screw thread truncted cone section 4, threaded circular shell of column 6 is along connecing, and in easily manufactured, thereby also can make chopper 1 screw in smoothly the workpiece workpiece of riving along the screw thread connecing.
In the present embodiment, the axial length of the screw thread conical section 2 of chopper 1, screw thread truncted cone section 4, threaded circular shell of column 6 reduces successively.Normally round log of the workpiece of wood-split machine effect, and screw thread chopper be from the outer peripheral face of round log screw in round log and the most at last round log split.The cone point of screw thread chopper can not just split round log in a precession round log, and near the center of circle of the cone point arrival round logs such as common needs time, round log just can split.Therefore, in the present embodiment, the axial length cone angle the longest and screw thread conical section 2 of screw thread conical section 2 is less, chopper 1 can screw in fast round log and arrive near the center of circle of round log, now round log has the trend of splitting, and thereupon, the screw thread truncted cone section 4 that cone angle is larger contacts expansible round log and makes round log rapid crack propagation with workpiece, along with chopper 1 continues towards round log feeding, threaded circular shell of column 6 screw thread truncted cone section 4 after, continue Zhang Changyuan wood also the most at last round log rive.Because the topmost effect of screw thread truncted cone section 4 and threaded circular shell of column 6 is to open workpiece rather than precession workpiece depths, therefore, the axial length of screw thread truncted cone section 4 and threaded circular shell of column 6 can be less than screw thread conical section 2, this can reduce the volume and weight of chopper 1, thereby easy to use and reduce costs.
In the present embodiment, at least part of hollow of chopper 1, thus alleviate the weight of chopper 1, easy to use.Preferably, screw thread truncted cone section 4 hollows of chopper 1.Because the effect of screw thread truncted cone section 4 is to screw in the workpiece posttension part that goes into operation in screw thread conical section 2, the relative screw thread conical section 2 of requirement of strength of double thread truncted cone section 4 is low, and screw thread truncted cone section 4 hollows can significantly alleviate the weight of chopper 1 and can not affect the intensity of chopper 1.
It may occur to persons skilled in the art that, the present invention can also have other implementation, but as long as its technical spirit adopting identical with the present invention or close, or any variation of making based on the present invention and replacement all within protection scope of the present invention.
Claims (10)
1. a chopper, described chopper comprises:
Screw thread conical section, described screw thread conical section has head and afterbody;
Screw thread truncted cone section, described screw thread truncted cone section has first end and the larger the second end of diameter that diameter is less, described first end and described afterbody be connected and both diameters identical, the cone angle of described screw thread truncted cone section is greater than the cone angle of described screw thread conical section;
It is characterized in that: described chopper also comprises the threaded circular shell of column being connected with described screw thread truncted cone section, and the diameter of described cylindrical section is identical with the diameter of described the second end.
2. chopper as claimed in claim 1, is characterized in that: the cone angle of described screw thread conical section is more than or equal to 15 degree, is less than or equal to 35 degree.
3. chopper as claimed in claim 2, is characterized in that: the cone angle of described screw thread conical section is 25 degree.
4. chopper as claimed in claim 1, is characterized in that: the cone angle of described screw thread truncted cone section is more than or equal to 36 degree, is less than or equal to 56 degree.
5. chopper as claimed in claim 4, is characterized in that: the cone angle of described screw thread truncted cone section is 46 degree.
6. chopper as claimed in claim 1, is characterized in that: the screw thread of described screw thread conical section, described screw thread truncted cone section, described threaded circular shell of column is along connecing.
7. chopper as claimed in claim 1, is characterized in that: described chopper is one-body molded.
8. chopper as claimed in claim 1, is characterized in that: at least part of hollow of described chopper.
9. chopper as claimed in claim 8, is characterized in that: described screw thread truncted cone section hollow.
10. chopper as claimed in claim 1, is characterized in that: the axial length of described screw thread conical section, described screw thread truncted cone section, described threaded circular shell of column reduces successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517558.8A CN103846989A (en) | 2012-12-06 | 2012-12-06 | Chopping knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517558.8A CN103846989A (en) | 2012-12-06 | 2012-12-06 | Chopping knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103846989A true CN103846989A (en) | 2014-06-11 |
Family
ID=50855350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210517558.8A Pending CN103846989A (en) | 2012-12-06 | 2012-12-06 | Chopping knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103846989A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2462979A1 (en) * | 1979-08-10 | 1981-02-20 | Boudon Pierre | Tractor drawn log splitter - has threaded cone on towable chassis which is power driven to penetrate wood |
| DE3425439A1 (en) * | 1984-07-11 | 1986-02-06 | Fuchs, Peter, 8503 Altdorf | Conical wood-splitting apparatus |
| US4898220A (en) * | 1988-05-06 | 1990-02-06 | Mecanique Des 3 Moutiers | Conical screw auger machine for splitting a log of wood |
| CN1150772A (en) * | 1994-06-14 | 1997-05-28 | 热成型建筑及研究股份公司 | Knife assembly and apparatus for slicing woodwool |
| CN2553971Y (en) * | 2002-07-22 | 2003-06-04 | 蒋福源 | Improved structure of screw cutting tool |
-
2012
- 2012-12-06 CN CN201210517558.8A patent/CN103846989A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2462979A1 (en) * | 1979-08-10 | 1981-02-20 | Boudon Pierre | Tractor drawn log splitter - has threaded cone on towable chassis which is power driven to penetrate wood |
| DE3425439A1 (en) * | 1984-07-11 | 1986-02-06 | Fuchs, Peter, 8503 Altdorf | Conical wood-splitting apparatus |
| US4898220A (en) * | 1988-05-06 | 1990-02-06 | Mecanique Des 3 Moutiers | Conical screw auger machine for splitting a log of wood |
| CN1150772A (en) * | 1994-06-14 | 1997-05-28 | 热成型建筑及研究股份公司 | Knife assembly and apparatus for slicing woodwool |
| CN2553971Y (en) * | 2002-07-22 | 2003-06-04 | 蒋福源 | Improved structure of screw cutting tool |
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Application publication date: 20140611 |