CN202388892U - High-precision driving system of scanning platform of external drum type computer to plate - Google Patents
High-precision driving system of scanning platform of external drum type computer to plate Download PDFInfo
- Publication number
- CN202388892U CN202388892U CN2011205428065U CN201120542806U CN202388892U CN 202388892 U CN202388892 U CN 202388892U CN 2011205428065 U CN2011205428065 U CN 2011205428065U CN 201120542806 U CN201120542806 U CN 201120542806U CN 202388892 U CN202388892 U CN 202388892U
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- scanning platform
- drum
- drive system
- guide rail
- drum type
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Abstract
The utility model relates to a high-precision driving system of a scanning platform of an external drum type computer to plate, aiming to provide the driving system with the characteristics of simple structure, good displacement precision, long service life and maintenance freeness. In the technical scheme, the high-precision driving system of the scanning platform of the external drum type computer to plate comprises a motor which can be used for driving the scanning platform to move linearly on a circumferential face of an optical drum along a direction parallel to the axis of the optical drum. The high-precision driving system is characterized by further comprising a guide rail device and a feedback device, wherein the guide rail device is used for allowing the movement of the scanning platform along the direction parallel to the axis of the optical drum, the feedback device is used for detecting the motion displacement of the scanning platform, and the motor is a linear motor which is arranged in the direction parallel to the axis of the optical drum and moves synchronously with the scanning platform. The guide rail device further comprises a guide rail parallel to the axis direction of the optical drum, and a slider moving on the guide rail, wherein the slider is provided with the scanning platform, and the guide rail is arranged on a mounting base of the linear motor.
Description
Technical field
The utility model relates to a kind of motion of direct platemaking machine, specifically is the high accuracy drive system of the direct platemaking machine scanning platform of drum type.
Background technology
Directly platemaking machine (being called for short CTP) is the equipment through CTP, and to be the scanning platform that is loaded with optical fiber solid matter and optical lens carry out two-dimensional scan to form image mechanical being loaded with its cardinal principle on the rotation light drum of plate.It mainly is to realize after utilizing the feed screw nut to convert the curvilinear motion of electric rotating machine (like servomotor, stepper motor) into rectilinear motion that the straight line of scanning platform moves.Scanning platform all has higher requirement to the accuracy of displacement and the stability of speed in the process that straight line moves, and the vitals that the feed screw nut moves as the gated sweep platform has played very crucial effect.
But existing feed screw nut also exists some shortcomings: at first feed screw nut's required precision is very high, need reach e2 Π 0.002mm, so fabrication and processing very the difficulty, production cost is also very high; Secondly; Screw mandrel is slender axles; Be comparatively meticulous parts and have certain amount of deflection that wearing and tearing or screw mandrel axis bending can take place the long-time back screw mandrel that uses, thereby cause the motion load variations; Cause the displacement error of scanning platform to increase, must change screw mandrel when situation is serious to guarantee the stable of whole system; Simultaneously, the assembly precision of screw mandrel and motor and screw mandrel bearing is had relatively high expectations, and needs lubricating system and time-based maintenance preferably, and maintenance cost is bigger.
Summary of the invention
The purpose of the utility model is the deficiency that overcomes in the above-mentioned background technology, and the novel drive system of the direct platemaking machine scanning platform of a kind of drum type is provided, characteristics simple in structure, that displacement accuracy good, service time is long and non-maintaining that this drive system should have.
The technical scheme that the utility model adopts is: the high accuracy drive system of the direct platemaking machine scanning platform of drum type; The motor that comprises ability driven sweep platform light drum parallel axes direction moving linearly in light drum periphery upper edge; It is characterized in that; This drive system comprises that also one is used for scanning platform along track-type facilities that moves on the light drum parallel axes direction and the feedback device that is used to detect said scanning platform moving displacement, said motor for be arranged on the bulging parallel axes direction of light and with the synchronization-moving linear electric motors of said scanning platform.
Said track-type facilities comprises guide rail parallel with light drum axis direction and the slide block that on guide rail, moves, and said scanning platform is installed on the said slide block, and said guide rail is installed on the linear electric motors mount pad.
Said linear electric motors comprise one at light drum upwardly extending stator in parallel axes side and the mover that on stator, moves.
Said stator comprises that one is installed in U-shaped metallic plate and a pair of inboard parallel track of metallic plate that is installed in that rouses the extension of parallel axes direction on the said linear electric motors mount pad and along light.
Said mover be one can between parallel track, move and not with the thrust coil of parallel track contact, said thrust coil couples together through mover fixed block and slide block.
Said thrust coil is made up of iron-less core coil and non-magnetic carrier.
Said feedback device comprises, a grating chi that is installed on the linear electric motors mount pad and extends in the same way with stator, and be installed on the said scanning platform and aim at the read/write head of grating chi through the read/write head fixture.
The beneficial effect of the utility model is: the drive system that the utility model provides; Through the track-type facilities that the electric rotating machine that is used in the original system and feed screw nut have been changed into linear electric motors and be used; Removed this complicated mechanical transmission framework comparatively of feed screw nut, made that therefore system architecture obtains simplifying; Simultaneously, other has the grating chi to cooperate with linear electric motors as feed back control system, has avoided having improved the precision of displacement greatly because leading screw itself is made precision and the caused driving error of feed screw nut's installation question; And; Remain a fixed gap between mover in the linear electric motors and the stator, eliminated the frictional resistance between moving, stator, improved sensitivity, rapidity and the servo-actuated property of mover widely; Therefore can obtain higher acceleration and movement velocity; And make the mechanical abrasion of linear electric motors almost nil, and greatly reduce fault rate, exempted the worry of safeguarding.
Description of drawings
Fig. 1 is the main TV structure sketch map of the embodiment one of the utility model.
Fig. 2 is the plan structure sketch map of the embodiment one of the utility model.
Fig. 3 is the main TV structure sketch map of the embodiment two of the utility model.
Fig. 4 is the linear electric motors principle schematic of the utility model.
The specific embodiment
The utility model has mainly adopted two kinds of mounting means.First kind of mode is: be installed in stator, grating chi and two parallel guide rails on the linear electric motors mount pad, be installed in mover on the slide block, be installed in read/write head on the scanning platform.The second way is classical guide track system, the i.e. pattern of V-type+plate rail: be installed in stator and grating chi on the linear electric motors mount pad, be installed in mover on the V slide block, be installed in read/write head on the scanning platform.
Embodiment one: as shown in Figure 1, the high accuracy drive system of the direct platemaking machine scanning platform of drum type mainly comprises linear electric motors, track-type facilities and feedback device.Its operation principle is: scanning platform 2 moves along light drum 1 parallel axes direction through track-type facilities under the driving of linear electric motors; Simultaneously scanning platform is also carrying out mechanically facing to the outer circumference surface of light drum along light drum parallel axes direction moving linearly, and feedback device detects the moving displacement situation of scanning platform in real time.
This track-type facilities comprise one with the parallel guide rail 10 (this line rail is a pair of line rail) of light drum axis direction, and the slide block 11 (this slide block is a sliding platform) that can on guide rail, move; This track-type facilities is installed on the linear electric motors mount pad 9, and scanning platform is erected at the top of slide block.
These linear electric motors are three-phase brushless motor, mainly are made up of two parts, comprise one along light drum upwardly extending stator 5 in parallel axes side and the mover 4 that on stator, moves; Stator comprises that one is installed in metallic plate 12 on the linear electric motors mount pad (cross section of this metallic plate is U-shaped and extends in the same way with stator that the U-shaped opening of metallic plate to the right) and a pair of inboard parallel track 13 (this parallel track is that permanent magnet is processed) of this metallic plate that is installed in; Mover be one can between parallel track, move and not with the thrust coil of parallel track contact, this thrust coil is I shape and is installed in slider bottom through mover fixed block 3; This thrust coil is made up of iron-less core coil 14 and non-magnetic carrier 15; Therefore the thrust coil is nonmagnetic; Can avoid producing between thrust coil and the parallel track perturbed force to influence displacement accuracy; And the mass ratio of this thrust coil is less, has the little and high advantage of acceleration of inertia, and is more quick when mobile.
This feedback device comprises a grating chi 8 that is installed on the linear electric motors mount pad and extends in the same way with stator and is installed on the said scanning platform and aims at the read/write head 6 of grating chi through read/write head fixture 7; This read/write head is aimed at the grating chi all the time in the moving process of scanning platform, thereby realizes accurately control with displacement.This grating chi is 0.1 micron level, thus the error of the omnidistance motion of scanning platform can be controlled in ± 0.002mm in.
Embodiment two:
As shown in Figure 3, the main difference part of embodiment two and embodiment one be following some:
One, the U-shaped opening of metallic plate left;
Two, stator is through being installed on the stator holder 16 on the linear electric motors mount pad, and the grating chi is fixed on the stator holder through grating chi established angle aluminium 17;
Three, the read/write head fixture is directly installed on the scanning platform bottom surface;
Four, in track-type facilities, guide rail is a V-type slide rail, and slide block is a V slide block that on the V-type slide rail, moves, and the upper fixed of V slide block has scanning platform;
Five, mover is the thrust coil is installed in the V slide block through mover fixed block 3 a right-hand member.
Above-described linear electric motors and other parts all outsourcing obtain.
Claims (7)
1. the high accuracy drive system of the direct platemaking machine scanning platform of drum type; The motor that comprises an ability driven sweep platform (2) light drum parallel axes direction moving linearly in light drum (1) periphery upper edge; It is characterized in that; This drive system comprises that also one is used for scanning platform along track-type facilities that moves on the light drum parallel axes direction and the feedback device that is used to detect said scanning platform moving displacement, said motor for be arranged on the bulging parallel axes direction of light and with the synchronization-moving linear electric motors of said scanning platform.
2. the high accuracy drive system of the direct platemaking machine scanning platform of drum type according to claim 1; It is characterized in that; Said track-type facilities comprises guide rail (10) parallel with light drum axis direction and the slide block (11) that on guide rail, moves; Said scanning platform is installed on the said slide block, and said guide rail is installed on the linear electric motors mount pad (9).
3. the high accuracy drive system of the direct platemaking machine scanning platform of drum type according to claim 2 is characterized in that, said linear electric motors comprise one at light drum upwardly extending stator in parallel axes side (5) and the mover (4) that on stator, moves.
4. the high accuracy drive system of the direct platemaking machine scanning platform of drum type according to claim 3; It is characterized in that said stator comprises that one is installed in U-shaped metallic plate (12) and a pair of inboard parallel track (13) of metallic plate that is installed in that rouses the extension of parallel axes direction on the said linear electric motors mount pad and along light.
5. the high accuracy drive system of the direct platemaking machine scanning platform of drum type according to claim 4; It is characterized in that; Said mover be one can between parallel track, move and not with the thrust coil of parallel track contact, said thrust coil couples together through mover fixed block (3) and slide block (11).
6. the high accuracy drive system of the direct platemaking machine scanning platform of drum type according to claim 5 is characterized in that, said thrust coil is made up of iron-less core coil (14) and non-magnetic carrier (15).
7. the high accuracy drive system of the direct platemaking machine scanning platform of drum type according to claim 6; It is characterized in that; Said feedback device comprises; Article one, the grating chi (8) that is installed on the linear electric motors mount pad and extends in the same way with stator, and be installed on the said scanning platform and aim at the read/write head (6) of grating chi through read/write head fixture (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205428065U CN202388892U (en) | 2011-12-22 | 2011-12-22 | High-precision driving system of scanning platform of external drum type computer to plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205428065U CN202388892U (en) | 2011-12-22 | 2011-12-22 | High-precision driving system of scanning platform of external drum type computer to plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202388892U true CN202388892U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205428065U Expired - Lifetime CN202388892U (en) | 2011-12-22 | 2011-12-22 | High-precision driving system of scanning platform of external drum type computer to plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202388892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323685A (en) * | 2013-07-16 | 2013-09-25 | 南京顺仕祥电子有限公司 | Antenna plane near-field test scanner |
| CN104406774A (en) * | 2014-12-07 | 2015-03-11 | 矽卓光电技术（天津）有限公司 | CTP full-automatic calibration aging system and implementation method thereof |
-
2011
- 2011-12-22 CN CN2011205428065U patent/CN202388892U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323685A (en) * | 2013-07-16 | 2013-09-25 | 南京顺仕祥电子有限公司 | Antenna plane near-field test scanner |
| CN104406774A (en) * | 2014-12-07 | 2015-03-11 | 矽卓光电技术（天津）有限公司 | CTP full-automatic calibration aging system and implementation method thereof |
| CN104406774B (en) * | 2014-12-07 | 2017-01-25 | 矽卓光电技术（天津）有限公司 | CTP full-automatic calibration aging system and implementation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |