CN105881210B - Automatic stepless speed-changing device and its application method for the transmission of rotary type cutter - Google Patents
Automatic stepless speed-changing device and its application method for the transmission of rotary type cutter Download PDFInfo
- Publication number
- CN105881210B CN105881210B CN201610329808.3A CN201610329808A CN105881210B CN 105881210 B CN105881210 B CN 105881210B CN 201610329808 A CN201610329808 A CN 201610329808A CN 105881210 B CN105881210 B CN 105881210B
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- driving
- face
- shaft
- drive
- transmission
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Classifications
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/12—Mechanical drives with means for varying the speed ratio
- B23Q5/16—Mechanical drives with means for varying the speed ratio infinitely-variable
- B23Q5/162—Mechanical drives with means for varying the speed ratio infinitely-variable mechanically-operated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
- Drilling And Boring (AREA)
Abstract
The present invention relates to main including containing with teeth or friction member, connecting rod or lever, cam, or the transmission device field at least containing two kinds of elements in these three patterns, specially a kind of automatic stepless speed-changing device and its application method for the transmission of rotary type cutter.A kind of automatic stepless speed-changing device for the transmission of rotary type cutter, including drive shaft (1), driven shaft (2) and electric tool (100), it is characterized in that: further including driving wheel (3), bracket (5) and reset spring (6), drive shaft (1) includes driving axis body (11) and driving driving face (12)；Driven shaft (2) includes driven axis body (21) and slave drive face (22)；At least a pair of of driving wheel (3) is equipped between drive shaft (1) and driven shaft (2).A kind of application method of the automatic stepless speed-changing device for the transmission of rotary type cutter, it is characterized in that: including transmission and adjusting.The configuration of the present invention is simple can adjust the speed automatically, applied widely.
Description
Technical field
Contain in these three patterns the present invention relates to main including containing with teeth or friction member, connecting rod or lever, cam, or at least
Two kinds of elements transmission device field, it is specially a kind of for rotary type cutter transmission automatic stepless speed-changing device and its make
Use method.
Background technique
The Chinese patent of Publication No. 102056697A disclosed a kind of " annular saw " on May 11st, 2011, included one kind
The transmission mechanism of the prior art, technical solution disclosed by the patent, which are that the gear of power tool has to be parallel to each other, matches
The 1st rotary shaft set 1st gear train different from the 2nd rotary shaft and transmission ratio and the 2nd gear train, the 1st gear train with
2nd gear train be respectively provided with intermeshing and for by the torque of the 1st rotary shaft pass to the driving gear of the 2nd rotary shaft with from
Moving gear is defined as the 1st power transfer path via the transmission path of the torque of the 1st gear train, via the torque of the 2nd gear train
Transmission path be defined as the 2nd power transfer path, gear can be dynamic with the described 2nd in the 1st power transfer path
The switching of transmission path is carried out between power transmission path.Due to using two gear trains, which can only necessarily realize 2 kinds of speed
The switching efficiency of degree is lower, and number of parts is more, at high cost, processing difficulties, also more difficult maintenance.
Thus, it is desirable to be related to a kind of stepless speed variator system of functional need to meet the market requirement.
Summary of the invention
In order to overcome the drawbacks of the prior art, provide a kind of structure it is simple, it is easy to use, applied widely, can adjust automatically
The stepless speed variator system of speed, the invention discloses a kind of automatic stepless speed-changing device for the transmission of rotary type cutter and its uses
Method.
The present invention reaches goal of the invention by following technical solution:
A kind of automatic stepless speed-changing device for the transmission of rotary type cutter, including drive shaft, driven shaft and electric tool,
The central axis of both drive shaft and driven shaft mutually coincides, and electric tool includes shell, power device and cutting tool, moves
Power device and it is fixed power device connects drive shaft inside the shell, it is characterized in that: further include driving wheel, bracket and reset spring,
Drive shaft includes driving axis body and driving driving face, and the front end of axis body is driven to be vertically fixed in driving driving face
At the heart, driving axis body and the central axis of both driving driving faces mutually coincide；Driven shaft includes driven axis body and driven biography
Dynamic face, the rear end of driven axis body are vertically fixed at the center in slave drive face, both driven axis body and slave drive face
Central axis mutually coincides；Driving driving face and slave drive face are oppositely arranged；
Support casing is set to outside driven shaft, and at least a pair of of driving wheel is equipped between drive shaft and driven shaft, and driving wheel includes connecting
Bar and driving turntable, one end of connecting rod are vertically fixed on the center point of driving turntable, and the other end of connecting rod is rotatably arranged in branch
On the inner sidewall of frame, the lateral surface of driving turntable is in rolling contact driving driving face and slave drive face respectively；
The front end of driven shaft is equipped with zigzag occlusal surface, and the rear end of output shaft is equipped with and driven shaft occlusal surface matches each other
Joint face, the front end of driven shaft is intermeshed by occlusal surface and joint face to connect output shaft；Reset spring is sheathed on drive
On the lateral wall of moving axis body, the both ends of reset spring are respectively held against driving driving face and power device；Branch is set up in shell simultaneously
It can move inside the shell, power device connects cutting tool by drive shaft output torque, the front end of output shaft.
The described automatic stepless speed-changing device for the transmission of rotary type cutter, it is characterized in that: driving driving face and driven
Driving face is all spherical crown surface or cylindrical surface, drives driving face and slave drive face opposite with concave surface.
The described automatic stepless speed-changing device for the transmission of rotary type cutter, it is characterized in that: driving driving face and driven
The radius of curvature of both driving faces is identical.
The described automatic stepless speed-changing device for the transmission of rotary type cutter, it is characterized in that: every a pair of driving wheel all with
The central axis of drive shaft is symmetrical arranged for symmetry axis, and all driving wheels are all averagely set by center axis of the central axis of drive shaft
It sets.
The automatic stepless speed-changing device for the transmission of rotary type cutter, it is characterized in that: the lateral surface of driving turntable
Between driving driving face and the coefficient of friction between driving turntable and slave drive face is all not less than 0.5.
The present invention is in use, include transmission and adjusting:
When transmission: power device drives drive shaft around the center axis thereof of drive shaft, and drive shaft passes through driving driving face
With the center axis thereof for driving driving wheel around driving wheel that is in rolling contact of driving turntable, driving turntable passes through and slave drive face
Be in rolling contact drive driven shaft around driven shaft center axis thereof, thus realize by the torque that drive shaft exports be transferred to from
Moving axis；
When adjusting: setting two driving wheels in every a pair of of driving wheel is respectively a# and b#, a# driving wheel and drive shaft and from
The rolling contact point of moving axis is respectively a1 and a2, the rolling contact point of b# driving wheel and drive shaft and driven shaft be respectively b1 and
The distance between b2, a1 and b1 are main driving diameter R1, and the distance between a2 and b2 are from driving diameter R2, the ratio of R1/R2
For transmission ratio R；When driven shaft is changed by the load that output shaft is driven, bracket is in axial sliding with respect to output shaft,
And driving arm drives connecting rod to move in the same direction, rotates connecting rod around the rotating joint of connecting rod and bracket, turns to change transmission
Disk respectively with driving driving face and slave drive face rolling contact point, to change driving diameter R1 and driven diameter
R2, and then change the transmission ratio R between drive shaft and driven shaft, to adjust the torque of driven shaft output；Adjusting torque
Reset spring pushing tow drive shaft always in the process, makes drive shaft set back, keeps the normal operation of cutting tool.
The present invention is cooperated with drive shaft and driven shaft driving respectively by the driving turntable of setting driving wheel, in driving turntable
When changing with the contact position of drive shaft and driven shaft, the transmission ratio of input diameter and driving diameter can be changed, to change output
State can realize a kind of stepless speed variator system adjusted the speed automatically compared with the prior art.It present invention can be suitably applied to cutting class tool, bore
Class tool, sanding class tool and saw class tool.
The beneficial effects of the present invention are: structure is simple, and it is easy to use, it is applied widely, it can adjust the speed automatically.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model；
Fig. 2 is the schematic cross-sectional view after the utility model removal power device and cutting tool.
Specific embodiment
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
A kind of automatic stepless speed-changing device for the transmission of rotary type cutter, including drive shaft 1, driven shaft 2, electric tool
100, driving wheel 3, bracket 5 and reset spring 6, as depicted in figs. 1 and 2, specific structure is:
The central axis of 2 the two of drive shaft 1 and driven shaft mutually coincides, and electric tool 100 includes shell 101, power
Device 102 and cutting tool 103, power device 102 and are fixed in shell 101, and power device 102 connects drive shaft 1；
Drive shaft 1 includes driving axis body 11 and driving driving face 12, and the front end of driving axis body 11 is vertically fixed on driving and passes
At the center in dynamic face 12, the central axis of 12 the two of driving axis body 11 and driving driving face mutually coincides；Driven shaft 2 include from
The rear end in moving axis body 21 and slave drive face 22, driven axis body 21 is vertically fixed at the center in slave drive face 22, driven shaft
The central axis of 22 the two of body 21 and slave drive face mutually coincides；Driving driving face 12 and slave drive face 22 are set relatively
It sets；
Bracket 5 is sheathed on outside driven shaft 2, and at least two pairs of driving wheels 3, driving wheel 3 are equipped between drive shaft 1 and driven shaft 2
Including connecting rod 31 and driving turntable 32, one end of connecting rod 31 is vertically fixed on the center point of driving turntable 32, connecting rod 31 it is another
End be rotatably arranged on the inner sidewall of bracket 5, the lateral surface of driving turntable 32 be in rolling contact respectively driving driving face 12 and from
Dynamic driving face 22；
The front end of driven shaft 2 is equipped with zigzag occlusal surface 23, and the rear end of output shaft 4 is equipped with and 2 occlusal surface of driven shaft is mutual
It is intermeshed by occlusal surface 23 and joint face 41 to connect output shaft 4 front end of the joint face 41 to match, driven shaft 2；It is multiple
Position spring 6 is sheathed on the lateral wall of driving axis body 11, and the both ends of reset spring 6 are respectively held against driving driving face 12 and power dress
Set 102；Bracket 5 is set in shell 101 and can move in shell 101, and power device 102 is defeated by 1 output torque of drive shaft
The front end of shaft 4 connects cutting tool 103.
Driving driving face 12 and slave drive face 22 can select spherical crown surface or cylindrical surface, and the present embodiment selects cylindrical surface,
Drive driving face 12 opposite with concave surface with slave drive face 22；
In the present embodiment: driving driving face 12 is identical with the radius of curvature in both slave drive faces 22；
In the present embodiment: every a pair of driving wheel 3 is all symmetrical arranged by symmetry axis of the central axis of drive shaft 1, Suo Youchuan
Driving wheel 3 is all averagely arranged by center axis of the central axis of drive shaft 1；
In the present embodiment: between the lateral surface of driving turntable 32 and driving driving face 12 and driving turntable 32 and driven
Coefficient of friction between driving face 22 is all not less than 0.5；
In use, as depicted in figs. 1 and 2: when transmission: power device 102 drives drive shaft 1 around the central axis of drive shaft 1
Line rotation, drive shaft 1 drive driving wheel 3 in driving wheel 3 by driving driving face 12 and being in rolling contact for driving turntable 32
Two driving wheels 3 are rotated by direction shown in arc arrow α and arc arrow β respectively in the rotation of mandrel line, i.e. Fig. 1 and Fig. 2, and transmission turns
Disk 32 pass through and slave drive face 22 be in rolling contact drive driven shaft 2 around driven shaft 2 center axis thereof, thus realize by
The torque that drive shaft 1 exports is transferred to driven shaft 2；When adjusting: two driving wheels 3 set in every a pair of of driving wheel 3 are respectively a#
And the rolling contact point of b#, a# driving wheel 3 and drive shaft 1 and driven shaft 2 is respectively a1 and a2, b# driving wheel 3 and drive shaft 1 and
The rolling contact point of driven shaft 2 is respectively b1 and b2, and the distance between a1 and b1 are main driving diameter R1, between a2 and b2 away from
From for from driving diameter R2, the ratio of R1/R2 is transmission ratio R；When driven shaft 2 is become by the load that output shaft 4 is driven
When change, rotate connecting rod 31 around the rotating joint of connecting rod 31 and bracket 5, to change main driving diameter R1 and from driving diameter
R2, and then change the transmission ratio R between drive shaft 1 and driven shaft 2, to adjust the torque of the output of driven shaft 2.
Further illustrate that adjusting is as follows: when driven shaft 2 is changed by the load that output shaft 4 is driven, such as load becomes
When big, as depicted in figs. 1 and 2: bracket 5 is in axial sliding with respect to output shaft 4 with direction shown in arrow B, and driving arm 5 drives
Connecting rod 31 is mobile in the same direction, is in rolling contact respectively with driving driving face 12 and slave drive face 22 to change driving turntable 32
Point, to change output state, specifically, when bracket 5 is synchronous with connecting rod 31 mobile with direction shown in arrow B, connecting rod 31 around
The rotating joint of 5 inner sidewall of connecting rod 31 and bracket rotates, and gradually becomes smaller the included angle A between 5 inner sidewall of connecting rod 31 and bracket,
It is mobile to drive driving turntable 32, while reducing driving diameter R1 and increasing driven diameter R2, transmission ratio R is reduced, from
And reduce revolving speed and increase torque, increase the cutting force of cutting tool 103；Conversely, if transmission can be improved when load becomes smaller
Than increasing the cutting speed of cutting tool 103 to improve revolving speed and reduce torque；Bullet is resetted during adjusting torque
The pushing tow drive shaft 1 always of spring 6, makes drive shaft 1 set back, and keeps the normal operation of cutting tool 103.
The present embodiment is applicable to cutting class tool, drill kind tool, sanding class tool and saw class tool.
Claims (5)
1. a kind of automatic stepless speed-changing device for the transmission of rotary type cutter, including drive shaft (1), driven shaft (2) and electronic
The central axis of both tool (100), drive shaft (1) and driven shaft (2) mutually coincides, and electric tool (100) includes shell
(101), power device (102) and cutting tool (103), power device (102) and are fixed in shell (101), power device
(102) drive shaft (1) is connected, it is characterized in that: further including the regulating mechanism of setting coaxial with drive shaft (1), driven shaft (2)；Institute
Stating regulating mechanism includes driving wheel (3), bracket (5) and reset spring (6)；
Drive shaft (1) includes driving axis body (11) and driving driving face (12), and the front end of driving axis body (11) is vertically fixed on drive
At the center of dynamic driving face (12), drives axis body (11) and the central axis of driving face (12) the two is driven mutually to coincide；From
Moving axis (2) includes driven axis body (21) and slave drive face (22), and the rear end of driven axis body (21) is vertically fixed on slave drive
At the center in face (22), the central axis of driven axis body (21) and slave drive face (22) the two mutually coincides；Driving transmission
Face (12) and slave drive face (22) are oppositely arranged；
Bracket (5) is sheathed on driven shaft (2) outside, and at least a pair of of driving wheel (3) is equipped between drive shaft (1) and driven shaft (2), is passed
Driving wheel (3) includes connecting rod (31) and driving turntable (32), and one end of connecting rod (31) is vertically fixed on the center of circle of driving turntable (32)
Place, the other end of connecting rod (31) are rotatably arranged on the inner sidewall of bracket (5), and the lateral surface of driving turntable (32) rolls respectively
Contact driving driving face (12) and slave drive face (22)；
The front end of driven shaft (2) is equipped with zigzag occlusal surface (23), and the rear end of output shaft (4) is equipped with and driven shaft (2) occlusion
It is intermeshed by occlusal surface (23) and joint face (41) to connect the front end of the joint face (41) that face matches each other, driven shaft (2)
Connect output shaft (4)；Reset spring (6) is sheathed on the lateral wall of driving axis body (11), and the both ends of reset spring (6) are respectively held against
Drive driving face (12) and power device (102)；Bracket (5) is set in shell (101) and can move in shell (101), moves
Power device (102) connects cutting tool (103) by drive shaft (1) output torque, the front end of output shaft (4)；
When transmission: power device (102) drives drive shaft (1) around the center axis thereof of drive shaft (1), and drive shaft (1) passes through
Driving driving face (12) and driving turntable (32) be in rolling contact drive driving wheel (3) around driving wheel (3) center axis thereof,
Driving turntable (32) passes through the central axis for driving driven shaft (2) around driven shaft (2) that is in rolling contact with slave drive face (22)
The torque that drive shaft (1) exports is transferred to driven shaft (2) to realize by rotation；
When adjusting: setting two driving wheels (3) in every a pair of of driving wheel (3) is respectively a# and b#, a# driving wheel (3) and drive shaft
(1) and the rolling contact point of driven shaft (2) is respectively a1 and a2, the rolling of b# driving wheel (3) and drive shaft (1) and driven shaft (2)
Dynamic contact point is respectively b1 and b2, and the distance between a1 and b1 are main driving diameter R1, and the distance between a2 and b2 are from driving
The ratio of diameter R2, R1/R2 are transmission ratio R；When driven shaft (2) are changed by the load that output shaft (4) are driven, branch
Frame (5) is in axial sliding with respect to output shaft (4), and driving arm (5) drives connecting rod (31) mobile in the same direction, makes connecting rod (31) around even
The rotating joint of bar (31) and bracket (5) rotation, thus change driving turntable (32) respectively with driving driving face (12) and
The rolling contact point in slave drive face (22) to change driving diameter R1 and driven diameter R2, and then changes drive shaft (1)
Transmission ratio R between driven shaft (2), to adjust the torque of driven shaft (2) output；Bullet is resetted during adjusting torque
Spring (6) pushing tow drive shaft (1) always, makes drive shaft (1) set back, and keeps the normal operation of cutting tool (103).
2. the automatic stepless speed-changing device for the transmission of rotary type cutter as described in claim 1, it is characterized in that: driving transmission
Face (12) and slave drive face (22) are all spherical crown surface or cylindrical surface, drive driving face (12) and slave drive face (22) with concave surface
Relatively.
3. the automatic stepless speed-changing device for the transmission of rotary type cutter as claimed in claim 2, it is characterized in that: driving transmission
Face (12) is identical with the radius of curvature of both slave drive face (22).
4. the automatic stepless speed-changing device for the transmission of rotary type cutter as claimed in claim 2, it is characterized in that: every a pair of of biography
Driving wheel (3) is all symmetrical arranged by symmetry axis of the central axis of drive shaft (1), and all driving wheels (3) are all in drive shaft (1)
Mandrel line is that center axis is averagely arranged.
5. the automatic stepless speed-changing device for the transmission of rotary type cutter according to any one of claims 1 to 4, feature
It is: between the lateral surface of driving turntable (32) and driving driving face (12) and driving turntable (32) and slave drive face (22)
Between coefficient of friction be all not less than 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329808.3A CN105881210B (en) | 2016-05-18 | 2016-05-18 | Automatic stepless speed-changing device and its application method for the transmission of rotary type cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329808.3A CN105881210B (en) | 2016-05-18 | 2016-05-18 | Automatic stepless speed-changing device and its application method for the transmission of rotary type cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105881210A CN105881210A (en) | 2016-08-24 |
| CN105881210B true CN105881210B (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610329808.3A Expired - Fee Related CN105881210B (en) | 2016-05-18 | 2016-05-18 | Automatic stepless speed-changing device and its application method for the transmission of rotary type cutter |
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| Country | Link |
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| CN (1) | CN105881210B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400107A (en) * | 2021-06-22 | 2021-09-17 | 陈日裕 | Scissor blade grinding device convenient to adjust grinding speed and improve work efficiency |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH340398A (en) * | 1955-12-29 | 1959-08-15 | Moser Walter | Revolver-shaped hand drill with infinitely adjustable friction gear |
| JP2002066960A (en) * | 2000-09-01 | 2002-03-05 | Makita Corp | Power tool |
| CN103659408A (en) * | 2013-12-09 | 2014-03-26 | 重庆信奇建材机械制造有限公司 | Lathe main shaft stepless speed changing device |
| CN104776180A (en) * | 2015-04-02 | 2015-07-15 | 四川大学 | Spin-free stepless transmission unit |
| CN204985571U (en) * | 2015-09-18 | 2016-01-20 | 湖南农业大学 | Beat is to awl disk infinitely variable device |
-
2016
- 2016-05-18 CN CN201610329808.3A patent/CN105881210B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH340398A (en) * | 1955-12-29 | 1959-08-15 | Moser Walter | Revolver-shaped hand drill with infinitely adjustable friction gear |
| JP2002066960A (en) * | 2000-09-01 | 2002-03-05 | Makita Corp | Power tool |
| CN103659408A (en) * | 2013-12-09 | 2014-03-26 | 重庆信奇建材机械制造有限公司 | Lathe main shaft stepless speed changing device |
| CN104776180A (en) * | 2015-04-02 | 2015-07-15 | 四川大学 | Spin-free stepless transmission unit |
| CN204985571U (en) * | 2015-09-18 | 2016-01-20 | 湖南农业大学 | Beat is to awl disk infinitely variable device |
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| Publication number | Publication date |
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| CN105881210A (en) | 2016-08-24 |
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