CN105728846A - Quick changing structure for multifunctional saw and quick changing method - Google Patents
Quick changing structure for multifunctional saw and quick changing method Download PDFInfo
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- CN105728846A CN105728846A CN201610221396.1A CN201610221396A CN105728846A CN 105728846 A CN105728846 A CN 105728846A CN 201610221396 A CN201610221396 A CN 201610221396A CN 105728846 A CN105728846 A CN 105728846A
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- quick change
- collet
- output shaft
- compression spring
- knife rest
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- 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
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Abstract
The invention relates to a quick changing structure for a multifunctional saw, solves the problem that replacing of a saw blade of a traditional multifunctional saw is tedious, and belongs to the technical field of mechanical equipment. The quick changing device comprises a quick changing wrench buckle, an eccentric block, a movable rod, a spring collet, a swelling rod and a compression spring. The quick changing wrench buckle and the eccentric block are connected with the top of a head shell through a cylindrical pin. The movable rod is arranged inside an output shaft, the top of the movable rod is connected with the eccentric block in an abutting mode, and the bottom of the movable rod is in threaded connection with the swelling rod. The outer side of the swelling rod is sleeved with the spring collet. The outer side of the spring collet is sleeved with the compression spring. A knife rest is arranged at the bottom of the output shaft. The inner wall of the knife rest is provided with an inward gradient from top to bottom, and a protruding block is arranged in the position, corresponding to the gradient, of the outer surface of the spring collet. According to the quick changing structure for the multifunctional saw, the diameter of the spring collet can be changed only by poking the quick changing wrench buckle, and thus the purposes of disassembling and replacing a saw blade are achieved. The invention further discloses a quick changing method of the quick changing structure for the multifunctional saw.
Description
Technical field
The invention belongs to mechanical equipment technical field, relate to the detaching structure of a kind of work head for replaceable head electric tool and body sharp separation or loading, particularly to a kind of multifunctional saw quick change construction, the invention also discloses the quick change method of multifunctional saw quick change construction.
Background technology
Multifunctional saw currently on the market, the overwhelming majority all adopts pressing plate and soket head cap screw, this multifunctional saw sawblade-replacing operates or fastens with specific purpose tool or unscrew, or directly rotates rotational fastener circle, this multifunctional saw structure and substitute mode with hands, owing to not locking safeguard construction, saw blade rotary work easily loosens, brings hidden danger to safe handling, and fasten or disassembling section trouble, sometimes do not fasten, sometimes dismantle to get off again.It is also desirable to be equipped with a die nut, it is necessary to carry at any time, and have the defects such as easy loss.
Summary of the invention
In order to overcome drawbacks described above and expand product use scope, improving product use sense and be subject to, the present invention provides a kind of multifunctional saw quick change construction, it is achieved that the quick-replaceable of saw blade.
For the attainment of one's purpose, technical scheme provided by the invention is:
A kind of multifunctional saw quick change construction that the present invention relates to includes head capsule, knife rest and output device, it is characterized in that: it also includes fast replacing device, described output device is located in head capsule, output device includes fork, output shaft, deep groove ball bearing, needle bearing, deep groove ball bearing is fixed on output shaft top outer by jump ring, fork is located at outside output shaft middle part, and output shaft bottom outside is provided with needle bearing；Described fast replacing device includes quick change and pulls button, eccentric block, motion bar, collet, swelling bar, compression spring, quick change is pulled button and eccentric block and is connected with head capsule top by straight pin, motion bar is located in output shaft, top with eccentric block against being connected, threaded with swelling bar in bottom, it is cased with collet outside swelling bar, compression spring it is cased with outside collet, described knife rest is located at bottom output shaft, knife rest inwall is provided with the gradient inside from top to bottom, and the outer surface of corresponding collet is provided with projection.
As preferably, described output shaft is the cylindrical structure of hollow, is divided into upper, middle and lower three sections, and output shaft epimere diameter is less than stage casing diameter, and output shaft stage casing diameter is less than hypomere diameter, and output shaft epimere outer wall is additionally provided with jump ring mounting groove.
As preferably, the upper and lower two ends of described deep groove ball bearing are equipped with jump ring, and deep groove ball bearing is connected with output shaft by the jump ring of upper end, is connected with head capsule by the jump ring of lower end.
As preferably, described motion bar bottom is provided with bellend, and the top of compression spring is close to the lower surface of motion bar bottom bellend and is connected, and the bottom of compression spring is close to the upper surface of knife rest and is connected.
As preferably, described fast replacing device also includes the second compression spring, and the second compression spring is arranged on outside swelling bar.
As preferably, described collet top is provided with bellend, collet inwall is provided with spring supporting tongue, compression spring top is close to the bellend lower surface on collet top and is connected, the top of the second compression spring is close to motion bar lower surface and is connected, and bottom is close to spring supporting tongue upper surface and is connected.
As preferably, being provided with sealing ring in head capsule and the space of output shaft on the downside of described needle bearing.
The invention also discloses the quick change method of described multifunctional saw quick change construction, comprise the following steps:
(1) factory-assembled multifunctional saw quick change construction: deep groove ball bearing, jump ring, shift fork, needle bearing, output shaft, motion bar, collet, swelling bar, compression spring, knife rest and sealing ring are separately mounted in head capsule, then adopt straight pin that quick change is pulled button and eccentric block is arranged on head capsule top；
(2) with straight pin for center of rotation, stirring quick change and pull button, quick change is pulled the dynamic eccentric block of cingulum and is rotated；
(3) due to the existence of eccentric throw, offset the elastic force of compression spring, motion bar is down pressed, swelling bar is driven to move down, swelling bar drives again collet to move down, the gradient of collet bottom projection touching knife rest inwall, reduces in pressure effect collet lower end diameter；
(4) saw blade is arranged on collet end；
(5) back stirring quick change and pull button, under the effect of compression spring, motion bar drives swelling bar to move up, swelling bar drives again collet to move up, collet end loses the pressure of the knife rest inwall gradient and opens, and is fixed on knife rest by saw blade, it is achieved the quick change of saw blade.
As preferably, the swelling bar described in step 3 also can compress the dynamic collet of spring band by second and move down.
As preferably, installing saw blade when collet lower end diameter is contracted to the diameter less than saw blade installing hole.
Adopt technical scheme provided by the invention, compared with prior art, have the advantages that
The multifunctional saw quick change construction that the present invention relates to has only to pull button by the quick change stirred on the upside of head capsule and can be achieved with dismounting and change the purpose of saw blade, it is not necessary to adopting other aids, simple to operate, speed is fast.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 multifunctional saw quick change construction schematic diagram；
Fig. 2 is the schematic diagram before the embodiment of the present invention 1 multifunctional saw quick change construction uses；
Fig. 3 is the schematic diagram under the embodiment of the present invention 1 multifunctional saw quick change construction use state；
Fig. 4 is the embodiment of the present invention 1 multifunctional saw quick change construction exploded view；
Fig. 5 is the embodiment of the present invention 2 multifunctional saw quick change construction schematic diagram；
Fig. 6 is the schematic diagram before the embodiment of the present invention 2 multifunctional saw quick change construction uses；
Fig. 7 is the schematic diagram under the embodiment of the present invention 2 multifunctional saw quick change construction use state；
Fig. 8 is the embodiment of the present invention 2 multifunctional saw quick change construction exploded view；
Fig. 9 is output shaft schematic diagram of the present invention.
Mark in schematic diagram illustrates: 1-quick change pulls button；2-eccentric block；3-jump ring；4-straight pin；5-head capsule；6-deep groove ball bearing；7-compresses spring；8-fork；9-needle bearing；10-output shaft；11-motion bar；12-knife rest；13-collet；14-swelling bar；15-sealing ring；16-saw blade；17-second compresses spring；18-jump ring mounting groove.
Detailed description of the invention
For further appreciating that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments, and following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment 1
In conjunction with Fig. 1～Fig. 4, Fig. 9, the multifunctional saw quick change construction that the present embodiment relates to includes head capsule 5, knife rest 12, output device and fast replacing device, wherein output device includes fork 8, output shaft 10, deep groove ball bearing 6, needle bearing 9, and fast replacing device includes quick change and pulls button 1, eccentric block 2, motion bar 11, collet 13, swelling bar 14 and compression spring 7.
nullAbove-mentioned head capsule 5 top adopts straight pin 4 to connect quick change and pulls button 1 and eccentric block 2，Deep groove ball bearing 6 it is separately installed with from top to bottom in cavity inside head capsule 5、Fork 8 and needle bearing 9，Wherein deep groove ball bearing 6 is connected with head capsule 5 inwall by jump ring 3，Deep groove ball bearing 6、Upper, middle and lower three part of output shaft 10 is connected again respectively inside fork 8 and needle bearing 9，Wherein output shaft 10 epimere is provided with jump ring mounting groove 18，Output shaft 10 is connected with deep groove ball bearing 6 by the jump ring 3 in jump ring mounting groove 18，The internal diameter of above-mentioned deep groove ball bearing 6 and needle bearing 9 0.1～0.3mm bigger than the external diameter of output shaft two sections respectively，Play the effect of location，Fork 8 plays the effect adjusting output shaft 10 rotating speed，Head capsule 5 on the downside of the needle bearing 9 and sealing ring 15 of annular is set in the space of output shaft 10.Output shaft 10 is hollow structure, the hollow position of output shaft 10 upper end is provided with motion bar 11, there is enlarged footing motion bar 11 lower end, and extend to the axis hole position of output shaft 10 stage casing and hypomere, being again provided with circular opening in the enlarged footing of motion bar 11 lower end, be provided with female thread in hole, swelling bar 14 top is provided with external screw thread, just mating with the female thread in the hole of motion bar 11 lower end, both are threaded.The outside of motion bar 11 is cased with collet 13 and compression spring 7 successively, is fixed with knife rest 12 bottom output shaft 10, and the enlarged footing of motion bar 11 lower end is withstood on compression spring 7 top, and bottom support is at knife rest 12 upper surface.Being provided with projection outside described collet 13, be provided with the gradient from top to bottom inwardly inside corresponding knife rest 12, when collet 13 moves down the gradient inside touching knife rest 12, collet 13 tightens.
The quick change method of the present embodiment multifunctional saw quick change construction includes:
Step one: factory-assembled multifunctional saw quick change construction: deep groove ball bearing 6, jump ring 3, shift fork 8, needle bearing 9, output shaft 10, motion bar 11, collet 13, swelling bar 14, compression spring 7, knife rest 12 and sealing ring 15 are separately mounted in head capsule, then adopt straight pin 4 that quick change is pulled button 1 and eccentric block 2 is arranged on head capsule top；
Step 2: with straight pin 4 for center of rotation, stirs quick change and pulls button 1, and quick change is pulled button 1 drive eccentric block and rotated 2；
Step 3: due to the existence of eccentric throw, offset the elastic force of compression spring 7, motion bar 11 is down pressed, swelling bar 14 is driven to move down, swelling bar 14 drives again collet 13 to move down, the gradient of collet 13 bottom projection touching knife rest 12 inwall, reduces in pressure effect collet 13 lower end diameter；
Step 4: when collet 13 lower end diameter is less than the installing hole of saw blade 16, saw blade 16 is arranged on collet end；
Step 5: back stir quick change and pull button 1, under the effect of compression spring 7, motion bar 11 drives swelling bar 14 to move up, swelling bar 14 drives again collet 13 to move up, collet 13 end loses the pressure of the knife rest 12 inwall gradient and opens, saw blade is fixed on knife rest, it is achieved the quick change of saw blade 16.
Embodiment 2
In conjunction with Fig. 5～Fig. 9, the multifunctional saw quick change construction that the present embodiment relates to includes head capsule 5, knife rest 12, output device and fast replacing device, wherein output device includes fork 8, output shaft 10, deep groove ball bearing 6, needle bearing 9, and fast replacing device includes quick change and pulls button 1, eccentric block 2, motion bar 11, collet 13, swelling bar 14, compression spring 7 and the second compression spring 17.
nullAbove-mentioned head capsule 5 top adopts straight pin 4 to connect quick change and pulls button 1 and eccentric block 2，Deep groove ball bearing 6 it is separately installed with from top to bottom in cavity inside head capsule 5、Fork 8 and needle bearing 9，Wherein deep groove ball bearing 6 is connected with head capsule 5 inwall by jump ring 3，Deep groove ball bearing 6、Upper, middle and lower three part of output shaft 10 is connected again respectively inside fork 8 and needle bearing 9，Wherein output shaft 10 epimere is provided with jump ring mounting groove，Output shaft 10 is connected with deep groove ball bearing 6 by the jump ring 3 in jump ring mounting groove 18，The internal diameter of above-mentioned deep groove ball bearing 6 and needle bearing 9 0.1～0.3mm bigger than the external diameter of output shaft two sections respectively，Play the effect of location，Fork 8 plays the effect adjusting output shaft 10 rotating speed，Head capsule 5 on the downside of the needle bearing 9 and sealing ring 15 of annular is set in the space of output shaft 10.Output shaft 10 is hollow structure, the hollow position of output shaft 10 upper end is provided with motion bar 11, there is enlarged footing motion bar 11 lower end, and extend to the axis hole position of output shaft 10 stage casing and hypomere, being again provided with circular opening in the enlarged footing of motion bar 11 lower end, be provided with female thread in hole, swelling bar 14 top is provided with external screw thread, just mating with the female thread in the hole of motion bar 11 lower end, both are threaded.Motion bar 11 top is cased with the second compression spring 17, it is provided with spring supporting tongue inside the collet 13 that the present embodiment uses, top is provided with bellend, collet 13 is enclosed within outside motion bar 11 and the second compression spring 17, and second compression spring 17 bottom be supported on spring supporting tongue, motion bar 11 lower surface is withstood on top, compression spring 7 is enclosed within outside collet 13, knife rest 12 it is fixed with bottom output shaft 10, the bellend at collet 13 top is withstood on compression spring 7 top, and bottom support is at knife rest 12 upper surface.Being provided with projection outside described collet 13, be provided with the gradient from top to bottom inwardly inside corresponding knife rest 12, when collet 13 moves down the gradient inside touching knife rest 12, collet 13 tightens.
The quick change method of the present embodiment multifunctional saw quick change construction includes:
Step one: factory-assembled multifunctional saw quick change construction, deep groove ball bearing 6, jump ring 3, shift fork 8, needle bearing 9, output shaft 10, motion bar 11, collet 13, swelling bar 14, compression spring 7, knife rest 12 and sealing ring 15 are separately mounted in head capsule, then adopt straight pin 4 that quick change is pulled button 1 and eccentric block 2 is arranged on head capsule top；
Step 2: with straight pin 4 for center of rotation, stirs quick change and pulls button 1, and quick change is pulled button 1 drive eccentric block and rotated 2；
Step 3: due to the existence of eccentric throw, offset the elastic force of compression spring 7, motion bar 11 is down pressed, swelling bar 14 is driven to move down, and extrude the second compression spring 17, the elastic force driving spring chuck 13 of the second compression spring 17 moves down, the gradient of collet 13 bottom projection touching knife rest 12 inwall, reduces in pressure effect collet 13 lower end diameter；
Step 4: when collet 13 lower end diameter is less than the installing hole of saw blade 16, saw blade 16 is arranged on collet end；
Step 5: back stir quick change and pull button 1, under the effect of compression spring 7, collet 13 is upwards pushed up, and coordinate the two the second compression springs 17 motion bar 11 and swelling bar 14 entirety to be lifted up, collet 13 end loses the pressure of the knife rest 12 inwall gradient and opens, saw blade 16 is fixed on knife rest 12, it is achieved the quick change of saw blade 16.
Schematically the present invention and embodiment thereof being described above, this description does not have restricted, and shown in accompanying drawing is also one embodiment of the present invention, and actual structure is not limited thereto.So those of ordinary skill in the art is enlightened by it, when without departing from the invention objective, design the frame mode similar to this technical scheme and embodiment without creationary, protection scope of the present invention all should be belonged to.
Claims (10)
1. a multifunctional saw quick change construction, including head capsule, knife rest and output device, it is characterized in that: it also includes fast replacing device, described output device is located in head capsule, output device includes fork, output shaft, deep groove ball bearing, needle bearing, deep groove ball bearing is fixed on output shaft top outer by jump ring, and fork is located at outside output shaft middle part, and output shaft bottom outside is provided with needle bearing；Described fast replacing device includes quick change and pulls button, eccentric block, motion bar, collet, swelling bar, compression spring, quick change is pulled button and eccentric block and is connected with head capsule top by straight pin, motion bar is located in output shaft, top with eccentric block against being connected, threaded with swelling bar in bottom, it is cased with collet outside swelling bar, compression spring it is cased with outside collet, described knife rest is located at bottom output shaft, knife rest inwall is provided with the gradient inside from top to bottom, and the outer surface of corresponding collet is provided with projection.
2. a kind of multifunctional saw quick change construction according to claim 1, it is characterized in that: described output shaft is the cylindrical structure of hollow, it is divided into upper, middle and lower three sections, output shaft epimere diameter is less than stage casing diameter, output shaft stage casing diameter is less than hypomere diameter, and output shaft epimere outer wall is additionally provided with jump ring mounting groove.
3. a kind of multifunctional saw quick change construction according to claim 1 and 2, it is characterised in that: the upper and lower two ends of described deep groove ball bearing are equipped with jump ring, and deep groove ball bearing is connected with output shaft by the jump ring of upper end, is connected with head capsule by the jump ring of lower end.
4. a kind of multifunctional saw quick change construction according to claim 1, it is characterized in that: described motion bar bottom is provided with bellend, the top of compression spring is close to the lower surface of motion bar bottom bellend and is connected, and the bottom of compression spring is close to the upper surface of knife rest and is connected.
5. a kind of multifunctional saw quick change construction according to claim 1, it is characterised in that: described fast replacing device also includes the second compression spring, and the second compression spring is arranged on outside swelling bar.
6. a kind of multifunctional saw quick change construction according to claim 1 or 5, it is characterized in that: described collet top is provided with bellend, collet inwall is provided with spring supporting tongue, compression spring top is close to the bellend lower surface on collet top and is connected, the top of the second compression spring is close to motion bar lower surface and is connected, and bottom is close to spring supporting tongue upper surface and is connected.
7. a kind of multifunctional saw quick change construction according to claim 1, it is characterised in that: it is provided with sealing ring in head capsule and the space of output shaft on the downside of described needle bearing.
8. the quick change method adopting the described multifunctional saw quick change construction of one of claim 1～7, it is characterised in that: it comprises the following steps:
(1) factory-assembled multifunctional saw quick change construction: deep groove ball bearing, jump ring, shift fork, needle bearing, output shaft, motion bar, collet, swelling bar, compression spring, knife rest and sealing ring are separately mounted in head capsule, then adopt straight pin that quick change is pulled button and eccentric block is arranged on head capsule top；
(2) with straight pin for center of rotation, stirring quick change and pull button, quick change is pulled the dynamic eccentric block of cingulum and is rotated；
(3) due to the existence of eccentric throw, offset the elastic force of compression spring, motion bar is down pressed, swelling bar is driven to move down, swelling bar drives again collet to move down, the gradient of collet bottom projection touching knife rest inwall, reduces in pressure effect collet lower end diameter；
(4) saw blade is arranged on collet end；
(5) back stirring quick change and pull button, under the effect of compression spring, motion bar drives swelling bar to move up, swelling bar drives again collet to move up, collet end loses the pressure of the knife rest inwall gradient and opens, and is fixed on knife rest by saw blade, it is achieved the quick change of saw blade.
9. the quick change method of multifunctional saw quick change construction according to claim 8, it is characterised in that: the swelling bar described in step 3 also can compress the dynamic collet of spring band by second and move down.
10. the quick change method of multifunctional saw quick change construction according to claim 8, it is characterised in that: saw blade is installed when collet lower end diameter is contracted to the diameter less than saw blade installing hole.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221396.1A CN105728846B (en) | 2016-04-11 | 2016-04-11 | Multifunctional saw quick change construction and quick change method |
| DE202017100297.7U DE202017100297U1 (en) | 2016-04-11 | 2017-01-20 | Quick change structure for multifunctional saw |
| US15/416,842 US10131032B2 (en) | 2016-04-11 | 2017-01-26 | Rapid-replacing structure of multifunctional saw |
| FR1750933A FR3043350B3 (en) | 2016-04-11 | 2017-02-03 | QUICK REPLACEMENT STRUCTURE OF A MULTIFUNCTION SAW |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221396.1A CN105728846B (en) | 2016-04-11 | 2016-04-11 | Multifunctional saw quick change construction and quick change method |
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| Publication Number | Publication Date |
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| CN105728846A true CN105728846A (en) | 2016-07-06 |
| CN105728846B CN105728846B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610221396.1A Active CN105728846B (en) | 2016-04-11 | 2016-04-11 | Multifunctional saw quick change construction and quick change method |
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| CN (1) | CN105728846B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107309492A (en) * | 2017-08-08 | 2017-11-03 | 浙江金美电动工具有限公司 | A kind of multifunctional saw quick change construction and quick change method |
| WO2019129218A1 (en) * | 2017-12-28 | 2019-07-04 | 宝时得科技 （中国）有限公司 | Multifunctional machine |
| CN113319374A (en) * | 2021-08-04 | 2021-08-31 | 大连理工江苏研究院有限公司 | Metal processing machine tool with tool changing mechanism and tool changing method |
| WO2022077899A1 (en) * | 2020-10-15 | 2022-04-21 | 南京久驰机电实业有限公司 | Quick clamping device and multifunctional machine tool using same |
| WO2023087615A1 (en) * | 2021-11-17 | 2023-05-25 | 浙江金美电动工具有限公司 | Saw blade quick-replacement structure of electric tool and saw blade quick-replacement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107309492A (en) * | 2017-08-08 | 2017-11-03 | 浙江金美电动工具有限公司 | A kind of multifunctional saw quick change construction and quick change method |
| CN107309492B (en) * | 2017-08-08 | 2023-08-29 | 浙江金美电动工具有限公司 | Multifunctional saw quick-change structure and quick-change method |
| WO2019129218A1 (en) * | 2017-12-28 | 2019-07-04 | 宝时得科技 （中国）有限公司 | Multifunctional machine |
| WO2022077899A1 (en) * | 2020-10-15 | 2022-04-21 | 南京久驰机电实业有限公司 | Quick clamping device and multifunctional machine tool using same |
| CN113319374A (en) * | 2021-08-04 | 2021-08-31 | 大连理工江苏研究院有限公司 | Metal processing machine tool with tool changing mechanism and tool changing method |
| WO2023087615A1 (en) * | 2021-11-17 | 2023-05-25 | 浙江金美电动工具有限公司 | Saw blade quick-replacement structure of electric tool and saw blade quick-replacement method |
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|---|---|
| CN105728846B (en) | 2017-12-15 |
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