CN109826916A - A kind of single axle helical feed mechanism based on differential principle - Google Patents
A kind of single axle helical feed mechanism based on differential principle Download PDFInfo
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- CN109826916A CN109826916A CN201910055315.9A CN201910055315A CN109826916A CN 109826916 A CN109826916 A CN 109826916A CN 201910055315 A CN201910055315 A CN 201910055315A CN 109826916 A CN109826916 A CN 109826916A
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- main shaft
- motor
- lead screw
- feed mechanism
- single axle
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Abstract
A kind of single axle helical feed mechanism based on differential principle, including screwfeed mechanism, screwfeed mechanism includes lead screw, lead screw input section is mounted on inner main axis by first bearing group, inner main axis is installed outside the spindle by second bearing group, outer main shaft end face is equipped with shift fork group, and shift fork group and feeding main shaft small―gap suture cooperation, feeding main shaft inner ring are fixedly connected with the feed screw nut on lead screw；Lead screw is fixedly and coaxially connected with first motor main shaft, and outer main shaft is equipped with big belt wheel, and with small pulley by synchronous band connection, small pulley is fixedly and coaxially connected big belt wheel with the second electric machine main shaft；By the differential rotation of first motor and the separately-driven inner main axis of the second motor and outer main shaft, the screwfeed of feeding main shaft is realized, and the adjustment for realizing rotation speed and axial feed velocity can be distributed by the revolving speed of bi-motor, it is simple and effective.
Description
Technical field
The present invention relates to screwfeed technical field, in particular to a kind of single axle helical based on differential principle feeds machine
Structure.
Background technique
It in engineer application, generally requires simplest scheme and realizes complicated compound motion, wherein screwfeed fortune
Dynamic, i.e. rotation simultaneously is one such with axial feed.The prior art often uses main shaft rotation and linear mould group string
The mode of connection, controls motion of main shaft motor by way of electronic gear and linear mould group motion motor realizes screwfeed fortune
It is dynamic, but will cause excessive radial dimension；Meanwhile to realize high-precision screwfeed track, it is necessary to rotate from main shaft
It is improved simultaneously with linear two aspect of mould group, difficulty is larger.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of single shafts based on differential principle
Screwfeed mechanism may be implemented rotation and axial feed while main shaft, and can be distributed by the revolving speed of bi-motor and realize rotation
The adjustment of rotary speed and axial feed velocity.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of single axle helical feed mechanism based on differential principle, including screwfeed mechanism 8, screwfeed mechanism 8 are wrapped
Lead screw 8-1 is included, lead screw 8-1 input section is mounted on inner main axis 8-5 by first bearing group 8-3, and the one end inner main axis 8-5 is fixedly mounted
On bearing block base 5, it is mounted in outer main shaft 8-8 on the outside of the inner main axis 8-5 other end by second bearing group 8-9, outer master
Axis 8-8 right end end face is equipped with shift fork group 8-11, shift fork group 8-11 right end and feeding main shaft 8-13 small―gap suture cooperation, feeds main shaft
8-13 and 12 small―gap suture of pedestal cooperate, and feeding main shaft 8-13 inner ring is fixedly connected with the feed screw nut 8-12 on lead screw 8-1；
The lead screw 8-1 is fixedly and coaxially connected with 1 main shaft of first motor；
The outer main shaft 8-8 is equipped with big belt wheel 10, and big belt wheel 10 is connect with small pulley 11 by synchronous belt 9, small band
Wheel 11 is fixedly and coaxially connected with 6 main shaft of the second motor；
Pass through the inner main axis 8-5 and outer main shaft 8-8 of first motor 1 and the separately-driven screwfeed mechanism 8 of the second motor 6
Differential rotation, realize feeding main shaft 8-13 screwfeed.
The lead screw 8-1 is connect by shaft coupling 3 with 1 main shaft of first motor.
The first motor 1 is fixedly installed on first motor seat 2, and first motor seat 2 is fixedly installed on pedestal 12.
Second motor 6 is fixedly mounted on the second motor cabinet 7, and the second motor cabinet 7 is fixedly mounted on pedestal 12.
The big belt wheel 10 is locked on outer main shaft 8-8 by big round nut 8-7.
The lead screw 8-1 is ball-screw, lead screw or other machines for converting rotary motion to linear motion
Structure.
Beneficial effects of the present invention:
The present invention passes through first motor driven lead screw rotation, the rotation of another motor driven feed screw nut, feed screw nut
It is fixedly connected with feeding main shaft, realizes the rotation of feeding main shaft simultaneously by changing the rotational speed difference between lead screw and feed screw nut indirectly
Realize the compound motion of screwfeed, it is simple and effective.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is single axle helical feed mechanism half sectional view of the present invention.
Specific embodiment
The present invention is described further with reference to the accompanying drawing.
Referring to Fig.1, Fig. 2, a kind of single axle helical feed mechanism based on differential principle, including screwfeed mechanism 8, spiral
Feed mechanism 8 includes lead screw 8-1, and lead screw 8-1 input section is mounted on inner main axis 8-5, first bearing group by first bearing group 8-3
8-3 a pair of bearings is separated by spacer sleeve 8-4, is positioned by first end cover 8-2 axial locking, guarantees that lead screw 8-1 can be around interior
The axial line of main shaft 8-5 rotates, and the one end inner main axis 8-5 is fixedly mounted on bearing block base 5, and passes through upper bearing seat 4
It compresses；It is mounted in outer main shaft 8-8 on the outside of the inner main axis 8-5 other end by second bearing group 8-9, second bearing group 8-9 is axial
Locking positioning is carried out by small round nut 8-10, guarantees that outer main shaft 8-8 can be rotated around the axial line of inner main axis 8-5；Outer main shaft
8-8 right end end face is equipped with shift fork group 8-11, shift fork group 8-11 right end and feeding main shaft 8-13 small―gap suture cooperation by screw, protects
Card feeding main shaft 8-13 can be rotated under the stirring of shift fork group 8-11 with identical angular speed, while again can be along shift fork group
The sliding of 8-11 axial direction；It feeds the outer ring main shaft 8-13 and 12 inner ring small―gap suture of pedestal cooperates, feed main shaft 8-13 inner ring and silk
Feed screw nut 8-12 on thick stick 8-1 is fixedly connected, and guarantees that feeding main shaft 8-13 can be moved under feed screw nut 8-12 driving；
The lead screw 8-1 is fixedly and coaxially connected by shaft coupling 3 and 1 main shaft of first motor, and first motor 1 passes through screw
It is fixedly installed on first motor seat 2, first motor seat 2 is fixedly installed on pedestal 12 by screw, guarantees that first motor 1 is driven
Dynamic lead screw 8-1 makees rotary motion, realizes the compound motion of rotary shaft, axial movement of feed screw nut 8-12 or both；
The outer main shaft 8-8 is equipped with big belt wheel 10, and big belt wheel 10 is locked on outer main shaft 8-8 by big round nut 8-7,
Guarantee outer main shaft 8-8 and 10 synchronous rotary of big belt wheel；Big belt wheel 10 and small pulley 11 are connect by synchronous belt 9, small pulley 11 with
Second motor, 6 main shaft is fixedly and coaxially connected, and the second motor 6 is fixedly mounted on the second motor cabinet 7 by screw, the second motor cabinet
7 are fixedly mounted on pedestal 12 by screw, guarantee that the second motor 6 can drive outer main shaft 8-8 to make rotary motion；
Pass through the inner main axis 8-5 and outer main shaft 8-8 of first motor 1 and the separately-driven screwfeed mechanism 8 of the second motor 6
Differential rotation, realize feeding main shaft 8-13 screwfeed.
The lead screw 8-1 is ball-screw, lead screw or other machines for converting rotary motion to linear motion
Structure.
The operation principle of the present invention is that:
Assuming that the revolving speed of first motor 1 is N1, direction is that counterclockwise, the second motor 6 revolving speed is N2, direction be it is counterclockwise,
The pitch diameter of big belt wheel 10 is D, and the pitch diameter of small pulley 11 is d, and the lead of lead screw 8-1 is P, dextrorotation, and each parameter is adopted
It is available with SI units:
The revolving speed of lead screw 8-1 are as follows:
NS=N1
The revolving speed (feeding the revolving speed of main shaft 8-13) of feed screw nut 8-12 are as follows:
NL=N2×d/D
Due to feeding main shaft 8-13 axial velocity depending on the revolving speed of lead screw 8-1, feed screw nut 8-12 revolving speed and
The lead P of lead screw can get:
V=(N2×d/D-N1)/60×P/1000
It is available to draw a conclusion by above formula:
Work as N2× d/D=N1When, feeding main shaft 8-13 rotates counterclockwise, not axial feed；
Work as N2×d/D>N1When, feeding main shaft 8-13 rotates counterclockwise, axial positive feeding；
Work as N2×d/D<N1When, feeding main shaft 8-13 rotates counterclockwise, axial negative sense feeding；
When the rotation direction of lead screw 8-1 is left-handed, feeding main shaft 8-13 axial feed direction is opposite with foregoing description.
Claims (6)
1. a kind of single axle helical feed mechanism based on differential principle, including screwfeed mechanism (8), it is characterised in that: spiral
Feed mechanism (8) includes lead screw (8-1), and lead screw (8-1) input section is mounted on inner main axis (8-5) by first bearing group (8-3),
The one end inner main axis (8-5) is fixedly mounted on bearing block base (5)；Pass through second bearing on the outside of inner main axis (8-5) other end
Group (8-9) is mounted in outer main shaft (8-8), and outer main shaft (8-8) right end end face is equipped with shift fork group (8-11), shift fork group (8-11)
Right end and feeding main shaft (8-13) small―gap suture cooperation, feeding main shaft (8-13) and pedestal (12) small―gap suture cooperate, and feed main shaft (8-
13) inner ring is fixedly connected with the feed screw nut (8-12) on lead screw (8-1)；
The lead screw (8-1) is fixedly and coaxially connected with first motor (1) main shaft；
The outer main shaft (8-8) is equipped with big belt wheel (10), and big belt wheel (10) and small pulley (11) are connected by synchronous belt (9)
It connects, small pulley (11) is fixedly and coaxially connected with the second motor (6) main shaft；
Pass through the inner main axis (8-5) and outer master of first motor (1) and the separately-driven screwfeed mechanism (8) of the second motor (6)
The screwfeed of feeding main shaft (8-13) is realized in the differential rotation of axis (8-8).
2. a kind of single axle helical feed mechanism based on differential principle according to claim 1, it is characterised in that: described
Lead screw (8-1) is connect by shaft coupling (3) with first motor (1) main shaft.
3. a kind of single axle helical feed mechanism based on differential principle according to claim 1, it is characterised in that: described
First motor (1) is fixedly installed on first motor seat (2), and first motor seat (2) is fixedly installed on pedestal (12).
4. a kind of single axle helical feed mechanism based on differential principle according to claim 1, it is characterised in that: described
Second motor (6) is fixedly mounted on the second motor cabinet (7), and the second motor cabinet (7) is fixedly mounted on pedestal (12).
5. a kind of single axle helical feed mechanism based on differential principle according to claim 1, it is characterised in that: described
Big belt wheel (10) is locked on outer main shaft (8-8) by big round nut (8-7).
6. a kind of single axle helical feed mechanism based on differential principle according to claim 1, it is characterised in that: described
Lead screw (8-1) is ball-screw, lead screw or other mechanisms for converting rotary motion to linear motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055315.9A CN109826916A (en) | 2019-01-21 | 2019-01-21 | A kind of single axle helical feed mechanism based on differential principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055315.9A CN109826916A (en) | 2019-01-21 | 2019-01-21 | A kind of single axle helical feed mechanism based on differential principle |
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| Publication Number | Publication Date |
|---|---|
| CN109826916A true CN109826916A (en) | 2019-05-31 |
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ID=66861771
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910055315.9A Pending CN109826916A (en) | 2019-01-21 | 2019-01-21 | A kind of single axle helical feed mechanism based on differential principle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540584A (en) * | 2022-03-17 | 2022-05-27 | 浙江坤亿佳机械制造有限公司 | Automatic heat treatment processing device for lead screw and use method |
| WO2023202086A1 (en) * | 2022-04-20 | 2023-10-26 | 科德数控股份有限公司 | High-speed nut rotating feeding lead screw device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1692013A (en) * | 2002-12-11 | 2005-11-02 | 株式会社东洋工机 | Reciprocation drive mechanism and press using the same |
| US20080092680A1 (en) * | 2006-10-24 | 2008-04-24 | Samsung Techwin Co., Ltd. | Substrate transfer apparatus and method of driving the same |
| CN102794491A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Device and method of automatic helical milling of hole |
| CN104714485A (en) * | 2015-02-12 | 2015-06-17 | 山东大学 | Novel high-precision micro-feeding servo system and control method thereof |
| CN109238848A (en) * | 2018-09-12 | 2019-01-18 | 中国科学技术大学 | ESEM in-situ mechanical test platform |
-
2019
- 2019-01-21 CN CN201910055315.9A patent/CN109826916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1692013A (en) * | 2002-12-11 | 2005-11-02 | 株式会社东洋工机 | Reciprocation drive mechanism and press using the same |
| US20080092680A1 (en) * | 2006-10-24 | 2008-04-24 | Samsung Techwin Co., Ltd. | Substrate transfer apparatus and method of driving the same |
| CN102794491A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Device and method of automatic helical milling of hole |
| CN104714485A (en) * | 2015-02-12 | 2015-06-17 | 山东大学 | Novel high-precision micro-feeding servo system and control method thereof |
| CN109238848A (en) * | 2018-09-12 | 2019-01-18 | 中国科学技术大学 | ESEM in-situ mechanical test platform |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540584A (en) * | 2022-03-17 | 2022-05-27 | 浙江坤亿佳机械制造有限公司 | Automatic heat treatment processing device for lead screw and use method |
| CN114540584B (en) * | 2022-03-17 | 2023-10-27 | 浙江坤亿佳机械制造有限公司 | Automatic heat treatment processing device for screw rod and use method |
| WO2023202086A1 (en) * | 2022-04-20 | 2023-10-26 | 科德数控股份有限公司 | High-speed nut rotating feeding lead screw device |
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Application publication date: 20190531 |