CN114603209A - Band saw - Google Patents
Band saw Download PDFInfo
- Publication number
- CN114603209A CN114603209A CN202011407751.7A CN202011407751A CN114603209A CN 114603209 A CN114603209 A CN 114603209A CN 202011407751 A CN202011407751 A CN 202011407751A CN 114603209 A CN114603209 A CN 114603209A
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- China
- Prior art keywords
- hub
- tire
- saw blade
- band saw
- saw
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 238000005520 cutting process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- -1 stainless steel Chemical class 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention discloses a band saw, which belongs to the technical field of electric tools and comprises a host, belt wheels and a saw blade, wherein the host comprises a driving mechanism, the two belt wheels are arranged on the host at intervals, each belt wheel comprises a hub and a tire, the tire is arranged outside the hub, and the hub of one belt wheel is in transmission connection with the driving mechanism; the saw blade is in transmission connection with the two belt wheels, sawteeth are arranged on the edge of the saw blade, and the saw blade is sleeved on tires of the two belt wheels; the tire is made of different materials from the hub, the tire is directly formed on the peripheral surface of the hub, and the tire cannot be driven by a saw blade to be separated from the hub in the working process of the tire, namely the tire cannot slip relative to the hub under the action of external force, so that the transmission stability is ensured; and at least no radial clearance exists between the shaft end of the tire and the shaft end of the hub, and chips generated by cutting cannot enter between the tire and the hub, so that the service life of the tire is prolonged.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to a band saw.
Background
At present, the hand-held band saw is widely applied and can be used for cutting all machinable metals including stainless steel, pipes, solid bodies and the like. Has strong heat resistance, abrasion resistance and shock resistance, and has longer service life compared with similar products. Because of its advantages of flexible and convenient use, it has been widely used in various industrial and household occasions where bars, pipes and sections are cut off.
The band saw includes the drive wheel, follows the driving wheel and overlaps the saw blade on the drive wheel and follow the driving wheel, and the drive wheel is rotatory to drive the saw blade annular removal to realize the cutting.
The existing driving wheel and driven wheel structurally comprise a hub and a tire, and the hub and the tire are assembled together after being respectively formed; on the other hand, because the two are arranged separately, in the working environment of the band saw, the saw blade bears a large external force and reacts on the tire, so that the tire and the hub are easy to slip and even separate; in addition, because the two are arranged in a split mode, an assembly gap is inevitably formed between the two, and in combination with the use environment of the band saw, a lot of chips are generated in the cutting process, and once the chips enter between the hub and the tire, the abrasion of the tire and the hub is accelerated, so that the failure is caused.
Disclosure of Invention
The invention aims to provide a band saw, which avoids slipping between a tire and a hub and prevents debris from influencing the service life of the tire.
As the conception, the technical scheme adopted by the invention is as follows:
a band saw, comprising:
a main machine including a driving mechanism;
the two belt wheels are arranged on the main machine at intervals, each belt wheel comprises a hub and a tire, the tire is arranged outside the hub, and the hub of one belt wheel is in transmission connection with the driving mechanism;
the saw blade is in transmission connection with the two belt wheels, sawteeth are arranged on the edge of the saw blade, and the saw blade is sleeved on tires of the two belt wheels;
the tire is formed from a different material than the hub, the tire is molded directly onto the outer peripheral surface of the hub, and there is no radial gap between at least the axial ends of the tire and the hub.
Wherein the tire is molded on the hub without a gap from an outer peripheral surface of the hub.
Wherein, be equipped with a plurality of joints between wheel hub and the tire.
Wherein, the tire and the wheel hub are integrally formed by injection molding.
The cleaning assembly is fixedly arranged on one side of the belt wheel and used for cleaning the surface of the belt wheel.
Wherein the material hardness of the hub is greater than the material hardness of the tire.
A band saw, comprising:
a main machine including a driving mechanism;
the two belt wheels are arranged on the main machine at intervals, each belt wheel comprises a hub and a tire, the tire is arranged outside the hub, and the hub of one belt wheel is in transmission connection with the driving mechanism;
the saw blade is in transmission connection with the two belt wheels, sawteeth are arranged on the edge of the saw blade, and the saw blade is sleeved on tires of the two belt wheels;
the tire is formed by directly molding the tire on the outer peripheral surface of the hub, wherein if the speed ratio of the belt wheel is a, the a is R/D is not less than 0.8R/(min mm), wherein R is the rotating speed of the belt wheel, and D is the diameter of the hub.
Wherein the outer peripheral surface of the tire includes a cylindrical surface, and the tire is molded on the hub without a gap from the outer peripheral surface of the hub.
Wherein, the tire and the wheel hub are integrally formed by injection molding.
Wherein, be equipped with a plurality of joints between wheel hub and the tire.
The cleaning assembly is fixedly arranged on one side of the belt wheel and used for cleaning the surface of the belt wheel.
The invention has the beneficial effects that:
according to the band saw provided by the invention, the tire is directly formed on the peripheral surface of the hub, and the tire cannot be driven by the saw blade to be separated from the hub in the working process of the tire, namely the tire cannot slip relative to the hub under the action of external force, so that the transmission stability is further ensured; at least no gap is reserved between the shaft end of the tire and the shaft end of the hub, and chips generated by cutting cannot enter the space between the tire and the hub, so that the service life of the tire is prolonged. Because the tire is directly formed on the peripheral surface of the hub, the assembly time and cost are saved, the tire is not in a tight state in the working process, and the service life is long.
Drawings
FIG. 1 is a schematic view of a band saw according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of a band saw provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the driving pulley engaging the drive shaft;
FIG. 4 is a cross-sectional view of the driven pulley engaging the driven shaft;
fig. 5 is a schematic structural diagram of a driving pulley provided in an embodiment of the present invention;
fig. 6 is a schematic structural view of a driven pulley provided in an embodiment of the present invention;
fig. 7 is a front view of a drive pulley provided in an embodiment of the present invention;
FIG. 8 is a sectional view taken along line A-A of FIG. 7;
fig. 9 is a front view of a driven pulley provided by an embodiment of the present invention;
FIG. 10 is a sectional view taken along line B-B of FIG. 9;
fig. 11 is a schematic structural diagram of a pulley and a cleaning assembly provided by an embodiment of the invention.
In the figure:
10. a host;
21. a driving pulley; 211. a first central aperture; 22. a driven pulley; 221. a second central aperture; 23. a hub; 24. a tire;
30. a saw blade;
40. a drive shaft; 41. a first screw;
50. a driven shaft; 51. a second screw;
60. a guide wheel;
70. a brush.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a band saw, including a main machine 10, belt pulleys and a saw blade 30, wherein the main machine 10 includes a driving mechanism, two belt pulleys are arranged on the main machine 10 at intervals, each belt pulley includes a hub 23 and a tire 24, the tire 24 is arranged outside the hub 23, the hub 23 of one belt pulley is in transmission connection with the driving mechanism, the saw blade 30 is in transmission connection with the two belt pulleys, saw teeth are arranged on an edge of the saw blade 30, and the saw blade 30 is sleeved on the tires 24 of the two belt pulleys. When the driving mechanism drives one of the belt wheels to rotate, the saw blade 30 transfers force to the other belt wheel under the action of the belt wheels, the two belt wheels and the saw blade 30 rotate simultaneously, and the saw teeth of the saw blade 30 can saw a workpiece to be machined.
Referring to FIG. 1, the band saw further includes a guide assembly comprising three guide wheels 60 in rolling contact with the saw blade 30, wherein one guide wheel 60 contacts a side edge of the saw blade 30 and the remaining two guide wheels 60 contact respective side surfaces of the saw blade 30. The three guide wheels 60 cooperate to position the blade 30 to prevent the blade 30 from twisting during sawing.
The guide assemblies are provided in two sets, with a cutting area for the saw blade 30 between the two sets of guide assemblies. Two sets of direction subassemblies make saw blade 30's operation more stable, and between two sets of direction subassemblies, saw blade 30 is along rectilinear movement, is convenient for cut.
Referring to fig. 3 and 4, the two pulleys are a driving pulley 21 and a driven pulley 22, respectively, and a hub 23 of the driving pulley 21 is connected to a driving mechanism. The driving mechanism comprises a driving shaft 40, a driven shaft 50 and a transmission mechanism arranged between the driving shaft 40 and the driven shaft 50, wherein a hub 23 of the driving belt wheel 21 is connected with the driving shaft 40, a hub 23 of the driven belt wheel 22 is connected with the driven shaft 50, and the transmission mechanism can be a gear transmission mechanism or a belt transmission mechanism.
Specifically, the hub 23 of the driving pulley 21 has a first center hole 211, the driving shaft 40 is inserted into the first center hole 211, and the hub 23 of the driving pulley 21 is connected to the driving shaft 40 by a first screw 41. The tip of first centre bore 211 is provided with first heavy groove, is provided with first apron in the first heavy groove, and first screw 41 passes first apron and driving shaft 40 threaded connection, and first apron plays limiting displacement. In addition, a bushing may be disposed around the drive shaft 40 and positioned within the first central bore 211.
The hub 23 of the driven pulley 22 has a second center hole 221, the driven shaft 50 is inserted into the second center hole 221, and the hub 23 of the driven pulley 22 and the driven shaft 50 are connected by a second screw 51. The end of the second center hole 221 is provided with a second sinking groove, a second cover plate is arranged in the second sinking groove, the second screw 51 penetrates through the second cover plate to be in threaded connection with the driven shaft 50, and the second cover plate plays a role in limiting. In addition, a bushing may be sleeved on the driven shaft 50, and the bushing is located in the second center hole 221.
Referring to fig. 5 to 10, the tire 24 according to the embodiment of the present invention is directly formed on the outer circumferential surface of the hub 23, and the tire 24 and the hub 23 are fixed into a whole by the above arrangement, on one hand, the tire 24 is not driven by the saw blade 30 to be separated from the hub 23 during the working process, i.e., the tire 24 does not slip relative to the hub 23 under the action of external force, thereby ensuring the stability of transmission; on the other hand, at least no radial gap exists between the shaft end of the tire 24 and the shaft end of the hub 23, and further no gap exists between the inner circumferential surface of the tire 24 and the outer circumferential surface of the hub 23, so that chips generated by cutting cannot enter between the tire 24 and the hub 23, and the service life of the tire 24 is prolonged; because the tire 24 is directly formed on the peripheral surface of the hub 23, the assembly time and cost are saved, the tire 24 is not in a tight state in the working process, and the service life is long.
The tire 24 and the outer peripheral surface of the hub 23 are molded on the hub 23 without a gap, that is, the tire 24 and the hub 23 have good bondability in the circumferential direction and a large contact area, and can bear a large shearing force, thereby improving the operational reliability. Meanwhile, due to the fact that no gap exists between the cutting mechanism and the wheel hub, cutting chips are prevented from entering the gap to damage the tire 24 and/or the wheel hub 23, the service life of the belt wheel is guaranteed, a user is prevented from frequently replacing the tire 24, and the use experience of the user is improved.
Further, a plurality of joints can be arranged between the hub 23 and the tire 24, so that the contact area between the tire 24 and the hub 23 is increased, and the tire 24 and the hub 23 are integrally formed and are more tightly fixed.
Alternatively, a plurality of grooves are provided on the outer peripheral surface of the hub 23, and the tire 24 is not only filled in the plurality of grooves and covers the outer peripheral surface of the hub 23, i.e. the end surface of the tire 24 is flush with the end surface of the hub 23, and there is no gap to avoid entering of debris.
The outer circumferential surface of the tire 24 includes a cylindrical surface that frictionally contacts the saw blade 30 to stabilize the operation of the saw blade 30.
The tire 24 of the embodiment of the present invention is made of a material different from that of the hub 23, and the material hardness of the hub 23 is greater than that of the tire 24, for example, the hub 23 may be made of a hard plastic or a metal material, the hub 23 plays a supporting role, and the tire 24 may be made of a flexible material such as rubber.
During production, the pulley may be manufactured by an integral injection molding process, such as molding the hub 23, and then injecting the tire 24 outside the hub 23, such as molding the rubber tire 24 directly on the hub 23 by a vulcanization process. Is convenient for processing and production and has simple process.
The belt wheel of the embodiment of the invention has a speed ratio of a, wherein R/D is more than or equal to 0.8R/(min mm), R is the rotating speed of the belt wheel, and D is the diameter of the hub 23. Set up this speed and compare and make the tire 24 can not too big or undersize at the saw blade 30's that bears on the basis of satisfying great rotational speed demand, both avoided skidding of saw blade 30 with tire 24, and then guaranteed driven stability, avoid saw blade 30 to exert too big effort to tire 24 again to cause the damage to tire 24.
The diameter of the tire 24 is larger than the width of the tire 24 in the axial direction so that the tire 24 can withstand larger shear forces.
Referring to FIG. 11, the band saw further includes a cleaning assembly fixedly disposed on one side of the pulley for cleaning the surface of the pulley. The cleaning assembly is fixedly arranged, and in the rotating process of the belt wheel, the cleaning assembly and the belt wheel move relatively, so that the surface of the belt wheel is cleaned.
Specifically, the cleaning assembly may be a brush 70. As shown in fig. 11, the edges of the brush 70 cover at least the junction of the top axial end of the tire 24 with the axial end of the hub 23 and the outer circumferential surface of the tire 24 to prevent debris accumulation.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (11)
1. A band saw, comprising:
a main machine including a driving mechanism;
the two belt wheels are arranged on the main machine at intervals, each belt wheel comprises a hub and a tire, the tire is arranged outside the hub, and the hub of one belt wheel is in transmission connection with the driving mechanism;
the saw blade is in transmission connection with the two belt wheels, sawteeth are arranged on the edge of the saw blade, and the saw blade is sleeved on the tires of the two belt wheels;
the tire is formed from a material different from that of the hub, the tire is directly molded on the outer peripheral surface of the hub, and at least no radial gap is formed between the axial end of the tire and the axial end of the hub.
2. The band saw of claim 1, wherein the tire is formed on the hub without a gap from an outer peripheral surface of the hub.
3. The band saw of claim 2, wherein a plurality of joints are provided between the hub and the tire.
4. The band saw of claim 1, wherein the tire is injection molded integrally with the hub.
5. The band saw of claim 1, further comprising a cleaning assembly fixedly disposed on one side of the pulley for cleaning a surface of the pulley.
6. The band saw of claim 1, wherein the hub has a material hardness greater than a material hardness of the tire.
7. A band saw, comprising:
a main machine including a driving mechanism;
the two belt wheels are arranged on the main machine at intervals, each belt wheel comprises a hub and a tire, the tire is arranged outside the hub, and the hub of one belt wheel is in transmission connection with the driving mechanism;
the saw blade is in transmission connection with the two belt wheels, sawteeth are arranged on the edge of the saw blade, and the saw blade is sleeved on tires of the two belt wheels;
the tire is formed by the material different from that of the hub, the tire is directly formed on the outer peripheral surface of the hub, and if the speed ratio of the belt wheel is a, the a is R/D is not less than 0.8R/(min mm), wherein R is the rotating speed of the belt wheel, and D is the diameter of the hub.
8. The band saw of claim 7, wherein the outer peripheral surface of the tire comprises a cylindrical surface, and the tire is formed on the hub without a gap from the outer peripheral surface of the hub.
9. The band saw of claim 7, wherein the tire is injection molded integrally with the hub.
10. The band saw of claim 7, wherein a plurality of joints are provided between the hub and the tire.
11. The band saw of claim 7, further comprising a cleaning assembly fixedly disposed on one side of the pulley for cleaning a surface of the pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407751.7A CN114603209A (en) | 2020-12-03 | 2020-12-03 | Band saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407751.7A CN114603209A (en) | 2020-12-03 | 2020-12-03 | Band saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114603209A true CN114603209A (en) | 2022-06-10 |
Family
ID=81856028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011407751.7A Pending CN114603209A (en) | 2020-12-03 | 2020-12-03 | Band saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114603209A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB731246A (en) * | 1950-11-18 | 1955-06-08 | Midland Saw And Tool Company L | Improvements in or relating to band saws or like machines |
| FR1354413A (en) * | 1963-04-01 | 1964-03-06 | Band saw flywheel | |
| CA2507899A1 (en) * | 2004-05-18 | 2005-11-18 | Giles A. Hill, Iii | Solid rubber tire with flexible hub and replaceable tire tread |
| US20110197457A1 (en) * | 2008-07-31 | 2011-08-18 | Wackwitz Jeffrey M | Band saw blade removal mechanism |
| JP2016060011A (en) * | 2014-09-19 | 2016-04-25 | 株式会社マキタ | Band saw |
| CN208879825U (en) * | 2018-10-12 | 2019-05-21 | 佛山市森柏斯木工机械制造有限公司 | A kind of sawing machine dress band saw wheel construction |
| CN110303706A (en) * | 2019-05-24 | 2019-10-08 | 南京海旗新材料科技有限公司 | A kind of non-inflatable tyre wheel hub integral forming process |
-
2020
- 2020-12-03 CN CN202011407751.7A patent/CN114603209A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB731246A (en) * | 1950-11-18 | 1955-06-08 | Midland Saw And Tool Company L | Improvements in or relating to band saws or like machines |
| FR1354413A (en) * | 1963-04-01 | 1964-03-06 | Band saw flywheel | |
| CA2507899A1 (en) * | 2004-05-18 | 2005-11-18 | Giles A. Hill, Iii | Solid rubber tire with flexible hub and replaceable tire tread |
| US20110197457A1 (en) * | 2008-07-31 | 2011-08-18 | Wackwitz Jeffrey M | Band saw blade removal mechanism |
| JP2016060011A (en) * | 2014-09-19 | 2016-04-25 | 株式会社マキタ | Band saw |
| CN208879825U (en) * | 2018-10-12 | 2019-05-21 | 佛山市森柏斯木工机械制造有限公司 | A kind of sawing machine dress band saw wheel construction |
| CN110303706A (en) * | 2019-05-24 | 2019-10-08 | 南京海旗新材料科技有限公司 | A kind of non-inflatable tyre wheel hub integral forming process |
Non-Patent Citations (2)
| Title |
|---|
| 中国专利局文献服务中心: "《专利文献通报-工程部件》", 18 August 1984, 专利文献出版社, pages: 129 - 130 * |
| 张栾英等: "《火电厂过程控制》", 31 July 2020, 中国电力出版社, pages: 100 - 104 * |
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