CN206296669U - Four leading screw driving structures of cnc boring and milling machine vertical axes - Google Patents
Four leading screw driving structures of cnc boring and milling machine vertical axes Download PDFInfo
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- CN206296669U CN206296669U CN201621426893.7U CN201621426893U CN206296669U CN 206296669 U CN206296669 U CN 206296669U CN 201621426893 U CN201621426893 U CN 201621426893U CN 206296669 U CN206296669 U CN 206296669U
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- leading screw
- main spindle
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Abstract
Four leading screw driving structures of cnc boring and milling machine vertical axes, it is characterized in that uprights vertical section is hollow square shape, column front and back are respectively arranged two sets of screw drive systems, and the left and right span that two sets of front drive system is set is more than rear drive system span, the vertical trapezoidal layout of four leading screws；Arrange four guide rails parallel to each leading screw, two fromer rails be arranged in the interior angle of column two just before, another two rear rails are arranged in the rear portion of the hollow opposite side of column, and guide rail is fixed with column screw, main spindle box facade and 4 sliding block mode connects for screw of guide rail；Upper and lower part lead screw shaft bearings are fixed by screw with column, and screw is connected with main spindle box by screw；Control system is fed back according to grating scale in operation, and real-time adjustment is carried out to four vertical axes driver units, realizes motor Synchronization Control, and each speed regulation.Realize that the Synchronization Control and center of gravity of vertical axes drive, the shortcomings of overcome vertical shaft transmission system poor rigidity, poor synchronization, fluctuation of service, fault rate high.
Description
Technical field
The utility model is related to Digit Control Machine Tool to manufacture field, the especially driving of cnc boring and milling machine vertical direction feed motion
Mechanism.
Background technology
The main spindle box of cnc boring and milling machine is needed along the processing that realization is moved under column in the vertical direction to part.At present,
It is general to use single screw pendant case or double lead-screw pendant box structure in the drive mechanism of existing cnc boring and milling machine vertical axes,
Pendant case is that main spindle box is installed on column side.The presently preferred kind of drive is that case transmission is just hung using double lead-screw.Such as Fig. 5 institutes
Show, the front end of main spindle box 28 is driven using leading screw 29, rear end uses hydraulic cylinder transmission 25 and hydraulic stem 27 to be driven with balancing main shaft case
Rear end weight.Main spindle box body 28 when being moved up and down along column 26, because servo drive system is synchronous with hydraulic cylinder transmission system
Property is difficult to control, hydraulic system leakage, poor rigidity the problems such as cause the vibration resistance of whole transmission system, followability, system stiffness,
The poor-performings such as precision stability, cause system operation unstable, influence the synthesis precision and service life of lathe.
The content of the invention
The purpose of this utility model is to provide a kind of four Lead screw transmission structures of cnc boring and milling machine vertical direction, it is possible to achieve
The Synchronization Control and center of gravity of vertical axes drive, and overcome vertical shaft transmission system poor rigidity, poor synchronization, fluctuation of service, failure
The shortcomings of rate is high.
Four leading screw driving structures of this cnc boring and milling machine vertical axes, including four sets of leading screw driving structure units, electric-controlleds
System processed, vertical axes driver unit, four sets of optical grating ruler measurement systems.Lathe headstock hangs box structure, its feature using positive
It is that uprights vertical Cross section Design is hollow square shape, bilateral symmetry, it is identical that column front and back is respectively arranged structure
Two sets of screw drive systems, the left and right span that the two sets of drive systems in front are set is more than two sets of rear drive system span, perpendicular
The straight trapezoidal layout of four leading screws；Four heavy duty roller line slideways, wherein two fromer rails are arranged parallel to each leading screw
Be arranged in the interior angle of column two just before, another two rear rails are arranged in the rear portion of the hollow opposite side of column, guide rail and column spiral shell
Nail is fixed, and 4 sliding blocks, main spindle box facade and guide rail slide block mode connects for screw are mounted on every guide rail；Upper and lower part leading screw bearing
Seat is fixed by screw with column, and screw is connected with main spindle box by screw；Control system is fed back according to grating scale in operation,
Real-time adjustment is carried out to four vertical axes driver units, motor Synchronization Control is realized, and can independently to single motor speed governing.
Four screw drive systems of vertical axes can drive the main spindle box that weight is 10t, realize rapid traverse speed 10m/min, weight
Multiple positioning precision 0.008mm, four drive motor inertia matching, and less than 1.6, Z, axial rigidity is 320KN/mm after testing, is common
2 times of the rigidity of machine tool.Due to using above-mentioned technical proposal, the beneficial effects of the invention are as follows：
1st, transmission system is rigidly directly proportional to leading screw diameter, the drivings of four screw synchronous, then in transmission system leading screw etc.
Effect diameter increase, transmission system is rigidly significantly improved.
2nd, in motion process, the barycenter trajectory of ram and main spindle box is located at the quadrilateral area that four leading screw axis are surrounded
It is interior, realize that center of gravity drives, lathe anti-seismic performance is improved, and is run more stable.
3rd, four screw synchronous drive the load that can effectively reduce each motor and leading screw, improve leading screw service life, together
When reduce because transmission system produce fault rate.
4th, dynamic property is optimized, and positioning precision is improved.
5th, precision stability can be improved.
6th, prevent main spindle box from coming off, security performance gets a promotion.
Brief description of the drawings
Fig. 1 for the design just in front of the whole structure chart；
Fig. 2 is the integrally-built B-B sectional views of Fig. 1；
Fig. 3 is the enlarged drawing of Fig. 2 one leading screw and guide rail partial structurtes；
Fig. 4 is the A of the design overall structure Fig. 1 to top view；
Fig. 5 is the cnc boring and milling machine vertical axes driving system structure figure before improving.
Specific embodiment
Driving system structure of the present utility model is illustrated with reference to the drawings and specific embodiments.
Four screw drive systems of cnc boring and milling machine vertical axes, it is main to include with lower component：Column, linear guides, grating
Chi, upper motor cabinet, step, leading screw and feed screw nut, motor, reductor etc., the structure of whole drive system is shown in Fig. 1~3：
Column 1 is that vertical cross-section is hollow square shape, bilateral symmetry, is placed vertically, it is characterised in that the front and back of column 1 point
Other two sets of screw drive systems of arrangement identical, two preceding leading screws 4, column rear pair are arranged symmetrically in the front of column 1
Claim leading screw 13 after arrangement two, the left and right span that two sets of front drive system is set is more than two sets of rear drive system span, erects
The straight trapezoidal layout of four leading screws；Four heavy duty roller line slideways are arranged parallel to each leading screw：In two preceding leading screws of column 1
The 4 linear fromer rails 6 of the roller of disposed inboard two, respectively positioned at the horizontal both sides of convex shape of main spindle box 11；In the rear portion of column 1
Place two linear rear rails 16 of roller, correspondence main spindle box protruding end two sides in side.Fromer rail 6 is with rear rail 16 using figure
Guide rail screw 19 in 2 is connected with column 1, and four pieces of front-sliders 12 are arranged on every fromer rail, and four pieces are arranged on every rear rail
Rear slider 17, the slip that sliding block can be accurate on guide rail.Forward and backward sliding block 17,12 is carried out with main spindle box 11 using sliding block screw 18
Connection.A screw 7 is configured on every leading screw.Screw 7 is using nut seat 14 after screw screw 9 and two preceding nut seats 8, two
Connection, screw 7 drives nut seat to move together.The preceding nut seat 8 of front end or so two is using nut seat screw 15 and main spindle box 11
Front end is connected, and nut seat 14 is connected using nut seat screw 15 with the rear end of main spindle box 11 behind rear end or so two.Such as Fig. 4, it is located at
The motor 24 on the top of column 1 is connected with right angle reductor 23, and the output end of reductor is connected with the input of leading screw.Machine-Tool Control
System can be to each the motor independent control in four sets of screw drive systems.
Fromer rail 6 is mutually perpendicular to the mounting surface of rear rail 16, using the crowded block 21 of wedge shape with short screw 22 two fromer rails 6
Side datum level be brought into close contact with the datum level of the vertical direction of column, while using the crowded block 21 of wedge shape and short screw 22 by before two
The datum level of sliding block 12 is close to the lateral datum level of main spindle box 11, and column fromer rail 6 is used for determining for direction around main spindle box 11
Position, rear rail 16 is used to prevent the rear portion left and right directions beat of main spindle box 11.The horizontal both sides main spindle box of convex shape and guide rail slide block spiral shell
Nail connection；Lead screw shaft bearings are fixed by screw with column, and screw is connected with main spindle box by screw；
It is convex shape that the external shape of main spindle box 11 is overlooked, with two rollers in column posterior medial face on rear side of middle protruding end two
The linear mounting surface of rear rail 16 is relative, and the horizontal both sides of convex shape are relative with the mounting surface of column fromer rail 6.
Each group of leading screw driver element of vertical four screw drive system is identical in structure, there is lathe electric control system
With vertical axes driver unit, every group of driver element a set of optical grating ruler measurement system of outfit.This machine tool numerical control system is to four
Motor Synchronization Control in leading screw driver element, and can be fed back according to grating scale, it is independent to single motor speed governing.Vertical axes are received
After movement instruction, four output axis rotations of motor 24 drive the output shaft of four reductors 23 to do rotation fortune
It is dynamic, and then the collaboration rotation of leading screw 13 after two preceding leading screws 4, two is driven, the in the vertical direction under the drive of leading screw of screw 7 does
Linear motion, each screw 7 is fixed by preceding nut seat 8, rear nut seat 14 with main spindle box, and final main spindle box is along guide rail perpendicular
Nogata is moved upwards.Be ensure main spindle box running precision and concertedness, such as Fig. 2, each drive system of the real-time monitoring of grating scale 5
Positional information, feeds back to Electrical Control of Machinery Tools system, forms full closed loop control.Feedback of the electric control system according to grating scale 5
The actual motion state of information and driver element, real-time, each driver element of dynamic adjustment operational factor is so that main spindle box both sides
Parallel up and down motion.
The present embodiment employs four leading screw type of drive to the vertical direction transmission system of cnc boring and milling machine, is truly realized
Synchronization Control, center of gravity drive, and reduce because of the fault rate that hydraulic system reason is produced, and improve the firm of vertical direction transmission system
Property, followability, so as to improve stability, precision and the precision stability of whole machine.
Claims (4)
1. four leading screw driving structures of a kind of cnc boring and milling machine vertical axes, including four sets of leading screw driving structure units, electrical controls
System, vertical axes driver unit, four sets of optical grating ruler measurement systems, lathe headstock hang box structure using positive, and its feature exists
Hollow square shape, bilateral symmetry are designed as in column (1) vertical cross-section, column (1) front and back is respectively arranged structure
The forward and backward screw drive system (4) of two sets of identical, (13), the left and right span that two sets of front drive system is set are more than rear two
Set drive system span, the vertical trapezoidal layout of four leading screws；Four heavy duty roller line slideways, institute are arranged parallel to each leading screw
State wherein two fromer rails (6) be arranged in the interior angle of column (1) two just before, another two rear rails (16) are arranged in column (1)
The rear portion of empty opposite side, guide rail is fixed with column (1) screw, and 4 sliding blocks are mounted on every guide rail, and main spindle box (11) stands
Face and guide rail slide block mode connects for screw；Upper and lower part lead screw shaft bearings are fixed with column (1) by screw, pass through with main spindle box (11)
Screw is connected；Control system is fed back according to grating scale (5) in operation, and four vertical axes driver units are adjusted in real time
It is whole, motor Synchronization Control is realized, and can independently to single motor speed governing.
2. four leading screw driving structures of cnc boring and milling machine vertical axes according to claim 1, it is characterised in that vertical four
Each group of leading screw driver element of thick stick drive system is identical in structure, there is lathe electric control system and vertical axes driver
Unit, every group of driver element is equipped with a set of optical grating ruler measurement system, the position letter of grating scale (5) each drive system of real-time monitoring
Breath, feeds back to Electrical Control of Machinery Tools system, forms full closed loop control.
3. four leading screw driving structures of cnc boring and milling machine vertical axes according to claim 1, it is characterised in that every leading screw
One screw (7) of upper configuration, screw (7) is connected using screw screw (9) with nut seat (14) after preceding nut seat (8), two；Before
The preceding nut seat (8) in end left and right two is connected using nut seat screw (15) with the front end of main spindle box 11, screw behind rear end or so two
Seat (14) is connected using nut seat screw (15) with main spindle box (11) rear end；Four pieces of front-sliders (12) are arranged on every fromer rail,
Arrange four pieces of rear sliders (17) on every rear rail, the slip that sliding block can be accurate on guide rail, forward and backward sliding block (17), (12) with
Main spindle box (11) is attached using sliding block screw (18).
4. four leading screw driving structures of cnc boring and milling machine vertical axes according to claim 1, it is characterised in that main spindle box
(11) it is convex shape that external shape is overlooked, with two linear rear rails of roller in column posterior medial face on rear side of middle protruding end two
(16) mounting surface is relative, and the horizontal both sides of convex shape are relative with column fromer rail (6) mounting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426893.7U CN206296669U (en) | 2016-12-23 | 2016-12-23 | Four leading screw driving structures of cnc boring and milling machine vertical axes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426893.7U CN206296669U (en) | 2016-12-23 | 2016-12-23 | Four leading screw driving structures of cnc boring and milling machine vertical axes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206296669U true CN206296669U (en) | 2017-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621426893.7U Withdrawn - After Issue CN206296669U (en) | 2016-12-23 | 2016-12-23 | Four leading screw driving structures of cnc boring and milling machine vertical axes |
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| CN (1) | CN206296669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493581A (en) * | 2016-12-23 | 2017-03-15 | 中捷机床有限公司 | Four screw drive systems of cnc boring and milling machine vertical axes |
-
2016
- 2016-12-23 CN CN201621426893.7U patent/CN206296669U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493581A (en) * | 2016-12-23 | 2017-03-15 | 中捷机床有限公司 | Four screw drive systems of cnc boring and milling machine vertical axes |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170704 Effective date of abandoning: 20191108 |
|
| AV01 | Patent right actively abandoned |