CN110788712A - Angle grinder capable of collecting sparks - Google Patents
Angle grinder capable of collecting sparks Download PDFInfo
- Publication number
- CN110788712A CN110788712A CN201911094556.0A CN201911094556A CN110788712A CN 110788712 A CN110788712 A CN 110788712A CN 201911094556 A CN201911094556 A CN 201911094556A CN 110788712 A CN110788712 A CN 110788712A
- Authority
- CN
- China
- Prior art keywords
- handle
- output shaft
- angle grinder
- strip
- grinding wheel
- 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.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
- B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
- B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/12—Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention discloses an angle grinder capable of collecting sparks, which comprises a handle and a grinding wheel, wherein a motor is arranged in the handle, the motor drives an output shaft to rotate through a transmission mechanism, one end of the output shaft extends out of the handle, the grinding wheel is fixed at one end of the output shaft extending out of the handle, a plurality of strip-shaped holes are formed in the grinding wheel, the shapes of the strip-shaped holes meet the requirement, and a connecting line from any point on two side walls of each strip-shaped hole to the circle center of the grinding wheel is crossed with the side wall of each strip-shaped hole. Due to the existence of the strip-shaped holes, part of iron dust generated by processing can be stored in the strip-shaped holes, and the generation of sparks is greatly reduced.
Description
Technical Field
The invention relates to an angle grinder, in particular to an angle grinder capable of collecting sparks.
Background
An angle grinder is a device for grinding the surface of a part, and when the angle grinder grinds a product, a lot of powder is generated, and the powder has some harm to human bodies. Particularly, when an angle grinder is used for processing iron products, high-temperature iron scrap powder can be generated to form sparks, and the iron scrap powder is diffused outwards due to the action of centrifugal force, so that the sparks are splashed. These sparks are dangerous and can cause fire if they are exposed to flammable materials.
For solving the problem of dust generated during the operation of the angle grinder, CN206869619U discloses an angle grinder, which comprises an angle grinder body, an isolation cover and a dust collector, wherein the front end of the angle grinder body is provided with a grinding wheel; the isolation cover is transparent and hemispherical and covers the grinding wheel, and the front side wall and the rear side wall of the isolation cover are vertically provided with slotted holes; the dust collector comprises a dust collecting chamber, an air suction pipe, a magnetic net and an exhaust fan, wherein the dust collecting chamber is communicated with the isolation cover through the air suction pipe, the magnetic net is arranged in the dust collecting chamber, and the exhaust fan is arranged below the magnetic net. It not only avoids metal dust to splash, the polluted environment through keeping apart the grinding region to can weaken noise pollution.
The angle grinder utilizes the isolation cover to block dust, and the dust can be effectively prevented from leaking. However, this structure has a great problem that the cover interferes with the machining of the grinding wheel, so that the grinding wheel cannot contact with the machined part. Such a product cannot be manufactured in practice.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the angle grinder capable of collecting sparks, which can collect part of sparks generated when the angle grinder grinds steel parts and greatly reduces the generation of sparks.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a can collect angle mill of spark, includes handle and emery wheel, be provided with the motor in the handle, the motor passes through drive mechanism drive output shaft and rotates, output shaft one end is stretched out the handle, the emery wheel is fixed the output shaft stretches out the one end of handle, be provided with several bar holes on the emery wheel, the shape in bar hole satisfies, any one point arrives on two lateral walls in bar hole the line in the emery wheel centre of a circle with bar hole lateral wall is alternately. Due to the existence of the strip-shaped holes, part of iron dust generated by processing can be stored in the strip-shaped holes, and the generation of sparks is greatly reduced.
In the above technical scheme, preferably, the cross section of the side wall of the strip-shaped hole is arc-shaped, and an acute angle is formed between a tangent of the arc surface at any position on the side wall and a tangent of the rotation direction of the grinding wheel. In this way, the iron dust stored in the bar-shaped holes is blocked by the side of the bar-shaped holes rather than being diffused outward along the side walls.
In the above technical scheme, preferably, the bar-shaped hole is a through hole, and further comprises a rear check ring and a front check ring, the top of the rear check ring is fixed on the handle, the bottom of the rear check ring covers the outer ring of one side of the grinding wheel facing to an operator, the front check ring is made of iron material, the top of the front check ring is slidably connected to the output shaft, the bottom of the front check ring covers the outer ring of one side of the grinding wheel facing away from the operator, the output shaft is further provided with an electromagnet, under a normal state, the electromagnet is not powered on, and during operation, the electromagnet is powered on to attract the front check ring, so that the side of the grinding wheel facing away from the operator is exposed out of the front check ring. The angle grinder with the structure has the advantages that when the angle grinder is not used at ordinary times, the grinding wheel is protected between the front retainer ring and the rear retainer ring, the grinding wheel is prevented from being collided and damaged, when the angle grinder works, the front retainer ring of the grinding wheel is attracted by the electromagnet and then rises, the grinding wheel machining part (namely, the side back to an operator) leaks outside, the angle grinder can be machined like a common angle grinder at this time, and meanwhile, the front retainer ring is also magnetic after being attracted by the electromagnet, so that sparks generated when the grinding wheel machines steel can be adsorbed on the front retainer ring, and the spark sputtering is avoided. The advantage that the bar hole is the through-hole is that the bar hole can produce induced drafting rotating, inhales the preceding retaining ring and the back retaining ring of toward the emery wheel rear side with the dust, and preceding retaining ring possesses the electromagnetic force, can adsorb the dust, and back retaining ring also can block the dust and avoid the diffusion.
In the above technical scheme, preferably, the rear retainer ring and the output shaft are made of iron material, the magnetism generated by the electromagnet is transmitted to the rear retainer ring by the output shaft, and the rear retainer ring can also be magnetized to adsorb dust.
In the above technical scheme, preferably, the transmission mechanism includes a speed reducer, the motor drives the transmission shaft to rotate after passing through the speed reducer, and the transmission shaft is matched with the output shaft through a bevel gear.
In the above technical scheme, preferably, the transmission shaft is provided with a centrifugal fan, and the handle is provided with an air suction opening on one end surface facing the grinding wheel. The centrifugal fan generates negative pressure to absorb dust generated by the angle grinder into the handle, and the dust is absorbed on the rear retaining ring in the inward absorption process.
In the above technical solution, preferably, two end faces of the front retainer ring and the rear retainer ring are attached to each other.
In the above technical solution, preferably, the front retainer includes a cover body and a sleeve, the sleeve is slidably connected to the output shaft, and the cover body and the sleeve are fixed together.
In the above technical solution, preferably, a spring is disposed on the output shaft, and the spring is located between the sleeve and the handle. The spring ensures that the front retainer ring is always kept on the grinding wheel to protect the grinding wheel when the front retainer ring is in a normal state.
In the above technical scheme, preferably, a groove is formed in the handle at the extending position of the output shaft, and the spring penetrates into the groove.
The invention has the beneficial effects that: due to the existence of the strip-shaped holes, part of iron dust generated by processing can be stored in the strip-shaped holes, and the generation of sparks is greatly reduced.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of the present invention.
FIG. 3 is a schematic view of a grinding wheel.
Fig. 4 is a side view (in partial cross-section) of the present invention.
FIG. 5 is a schematic view of the present invention with the front ring raised.
Fig. 6 is a partially enlarged schematic view of fig. 5.
FIG. 7 is a schematic representation of the invention as processed.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
the technical scheme adopted by the invention for solving the technical problems is as follows:
as shown in fig. 1 to 7, the angle grinder capable of collecting sparks comprises a handle 1 and a grinding wheel 2, wherein a motor 3 is arranged in the handle 1, and the motor 3 drives an output shaft 4 to rotate through a transmission mechanism. In this embodiment, the transmission mechanism includes a speed reducer 31, the motor 3 drives a transmission shaft 32 to rotate through the speed reducer 31, and the transmission shaft 32 is matched with the output shaft 4 through a bevel gear. The output shaft 4 is made of ferrous materials.
Referring to fig. 3, a plurality of strip-shaped holes 21 are formed in the grinding wheel 2, the strip-shaped holes 21 are through holes, the shape of the strip-shaped holes 21 is satisfied, and a connecting line from any point on two side walls of the strip-shaped holes 21 to the circle center of the grinding wheel 2 is intersected with the side walls of the strip-shaped holes. The cross section of the side wall of the strip-shaped hole is arc-shaped, and an arc surface tangent line L1 at any position on the side wall forms an acute angle A with a tangent line L2 in the rotation direction of the grinding wheel.
One end of the output shaft 4 extends out of the handle 1, the grinding wheel 2 is fixed at one end of the output shaft 4 extending out of the handle 1, the grinding wheel further comprises a rear retaining ring 51 and a front retaining ring 52, and both the front retaining ring 51 and the rear retaining ring 52 are made of iron materials.
The top of the rear retainer ring 51 is fixed on the handle 1, and the bottom of the rear retainer ring 51 covers the outer ring of one side of the grinding wheel 2 facing to an operator.
The front retainer ring 52 includes a cover 521 and a sleeve 522, the sleeve 522 is slidably connected to the output shaft 4, and the cover 521 and the sleeve 522 are fixed together. The bottom of the front check ring 52 covers the outer ring of one side, back to an operator, of the grinding wheel 2, the output shaft 4 is further provided with an electromagnet 6, the electromagnet cannot be powered on in a normal state, and when the magnetic grinding wheel is in work, the electromagnet is powered on to attract the front check ring, so that one side, back to the operator, of the grinding wheel is exposed out of the front check ring and the front check ring is magnetized, meanwhile, magnetism generated by the electromagnet is transmitted to the rear check ring through the output shaft, and the rear check ring can also be magnetized to adsorb dust.
A spring 7 is arranged on the output shaft 4, and the spring 7 is positioned between the sleeve 522 and the handle 1. The spring 7 ensures that the front retainer ring 52 always keeps the grinding wheel 2 in a blocking state when the front retainer ring 52 is in a normal state, so that the grinding wheel is protected. A groove 11 is formed in the extending position of the output shaft 4 on the handle 1, and the spring 7 penetrates into the groove 11.
The transmission shaft 32 is provided with a centrifugal fan 8, and an air suction opening 12 is formed in one end face, facing the grinding wheel, of the handle 1. The centrifugal fan generates negative pressure to absorb dust generated by the angle grinder into the handle, and the dust is absorbed on the rear retaining ring in the inward absorption process.
In the angle grinder with the structure, due to the existence of the strip-shaped holes, part of iron filings and dust generated in processing can be stored in the strip-shaped holes, and the generation of sparks is greatly reduced.
When not in use at ordinary times, the emery wheel is all protected behind the preceding retaining ring between the retaining ring, avoids the emery wheel to collide with the damage, and in work, the preceding retaining ring of emery wheel rises after being adsorbed by the electro-magnet, and emery wheel processing portion (the one side that is dorsad to the operator) leaks outside, can process like ordinary angle grinder this moment, simultaneously because also have magnetism after the preceding retaining ring is attracted by the electro-magnet, can adsorb the spark that produces when the emery wheel processes steel on the preceding retaining ring like this, avoids spark sputtering.
Claims (10)
1. The utility model provides a can collect angle mill of spark, includes handle and emery wheel, be provided with the motor in the handle, the motor passes through drive mechanism drive output shaft and rotates, output shaft one end is stretched out the handle, the emery wheel is fixed the output shaft stretches out the one end of handle, its characterized in that: the grinding wheel is provided with a plurality of strip-shaped holes, the shape of each strip-shaped hole meets the requirement, and a connecting line from any point on two side walls of each strip-shaped hole to the circle center of the grinding wheel is crossed with the side wall of each strip-shaped hole.
2. An angle grinder as claimed in claim 1, wherein: the cross section of the side wall of the strip-shaped hole is arc-shaped, and an arc surface tangent at any position on the side wall and a tangent of the rotation direction of the grinding wheel form an acute angle.
3. An angle grinder as claimed in claim 1, wherein: the utility model discloses a grinding wheel, including the handle, the handle is fixed on the handle, the bar hole is the through-hole, still includes a back retaining ring and a preceding retaining ring, back retaining ring top is fixed on the handle, back retaining ring bottom covers one side outer lane towards operating personnel of emery wheel, preceding retaining ring is made by the iron material, top sliding connection be in on the output shaft, the bottom cover of preceding retaining ring is in one side outer lane that the emery wheel dorsad operating personnel, still be provided with an electro-magnet on the output shaft, under the normal condition, the electro-magnet is not electrified, and during operation, the electro-magnet is electrified, attracts preceding retaining ring makes one side of emery wheel dorsad operating personnel exposes preceding retaining ring.
4. An angle grinder as claimed in claim 3, wherein: the rear check ring and the output shaft are made of iron materials, and magnetism generated by the electromagnet is transmitted to the rear check ring through the output shaft.
5. An angle grinder as claimed in claim 3, wherein: the transmission mechanism comprises a speed reducer, the motor drives a transmission shaft to rotate after passing through the speed reducer, and the transmission shaft is matched with the output shaft through a bevel gear.
6. An angle grinder as claimed in claim 5, wherein: the transmission shaft is provided with a centrifugal fan, and an air suction opening is formed in one end face, facing the grinding wheel, of the handle.
7. An angle grinder as claimed in claim 3, wherein: the two end faces of the front retainer ring and the rear retainer ring are mutually attached.
8. An angle grinder as claimed in claim 3, wherein: the front retainer ring comprises a cover body and a sleeve, the sleeve is connected to the output shaft in a sliding mode, and the cover body and the sleeve are fixed together.
9. An angle grinder as claimed in claim 8, wherein: the output shaft is provided with a spring, and the spring is positioned between the sleeve and the handle.
10. An angle grinder as claimed in claim 9, wherein: a groove is formed in the extending position of the output shaft on the handle, and the spring penetrates into the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094556.0A CN110788712B (en) | 2019-11-11 | 2019-11-11 | Angle grinder capable of collecting sparks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094556.0A CN110788712B (en) | 2019-11-11 | 2019-11-11 | Angle grinder capable of collecting sparks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110788712A true CN110788712A (en) | 2020-02-14 |
| CN110788712B CN110788712B (en) | 2020-10-13 |
Family
ID=69443882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911094556.0A Active CN110788712B (en) | 2019-11-11 | 2019-11-11 | Angle grinder capable of collecting sparks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110788712B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393491A (en) * | 2022-03-28 | 2022-04-26 | 南通鼎城船舶技术有限公司 | Anticorrosive paint vehicle of surface digs out device for boats and ships maintenance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499173Y (en) * | 2001-10-26 | 2002-07-10 | 吴志江 | Dust collective angle grinder |
| EP2145733A1 (en) * | 2008-07-15 | 2010-01-20 | Guido Valentini | Pad for machining surfaces with curved aspiration channels |
| EP2269771A1 (en) * | 2009-01-29 | 2011-01-05 | Nakaya Co., Ltd. | Dust collecting cover |
| CN107214595A (en) * | 2017-07-13 | 2017-09-29 | 徐继传 | Multifunctional polishing machine is used in one kind casting |
| CN107363686A (en) * | 2017-08-29 | 2017-11-21 | 共享装备股份有限公司 | The piece shape angle grinder of abrasive dust absorption plant is set |
| CN208117493U (en) * | 2018-02-08 | 2018-11-20 | 中山市迪米尔机电设备有限公司 | A kind of dedusting type is double acting to make flat-grinding machine |
| CN209062782U (en) * | 2018-12-09 | 2019-07-05 | 浙江闽立电动工具有限公司 | A kind of dust-proof angle grinder |
-
2019
- 2019-11-11 CN CN201911094556.0A patent/CN110788712B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499173Y (en) * | 2001-10-26 | 2002-07-10 | 吴志江 | Dust collective angle grinder |
| EP2145733A1 (en) * | 2008-07-15 | 2010-01-20 | Guido Valentini | Pad for machining surfaces with curved aspiration channels |
| EP2269771A1 (en) * | 2009-01-29 | 2011-01-05 | Nakaya Co., Ltd. | Dust collecting cover |
| CN107214595A (en) * | 2017-07-13 | 2017-09-29 | 徐继传 | Multifunctional polishing machine is used in one kind casting |
| CN107363686A (en) * | 2017-08-29 | 2017-11-21 | 共享装备股份有限公司 | The piece shape angle grinder of abrasive dust absorption plant is set |
| CN208117493U (en) * | 2018-02-08 | 2018-11-20 | 中山市迪米尔机电设备有限公司 | A kind of dedusting type is double acting to make flat-grinding machine |
| CN209062782U (en) * | 2018-12-09 | 2019-07-05 | 浙江闽立电动工具有限公司 | A kind of dust-proof angle grinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393491A (en) * | 2022-03-28 | 2022-04-26 | 南通鼎城船舶技术有限公司 | Anticorrosive paint vehicle of surface digs out device for boats and ships maintenance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110788712B (en) | 2020-10-13 |
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