CN211332722U - Four-guide-post automatic lifting mechanism of plate grinding machine - Google Patents
Four-guide-post automatic lifting mechanism of plate grinding machine Download PDFInfo
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- CN211332722U CN211332722U CN201922467035.7U CN201922467035U CN211332722U CN 211332722 U CN211332722 U CN 211332722U CN 201922467035 U CN201922467035 U CN 201922467035U CN 211332722 U CN211332722 U CN 211332722U
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- grinding roller
- automatic lifting
- lifting mechanism
- grinding machine
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Abstract
The utility model discloses a four guide pillar automatic lifting mechanism of scrubbing machine, include: the guide mechanism ensures that a moving carrier of the displacement table stably and linearly moves with high precision so as to ensure the set radial feeding amount of the grinding roller, and can select a linear guide rail or a linear bearing and a guide shaft. Like this, four guide pillar lift displacement platforms of stable and high accuracy drive the grinding roller, guarantee the accurate radial feed volume of grinding roller, cooperate PCB board transport speed, grinding roller rotation rate, grinding roller axial feed volume isoparametric to guarantee again, make PCB dull polish machine have higher precision and stability to improve production efficiency and product yield.
Description
Technical Field
The utility model relates to a four guide pillar automatic lifting mechanism of unanimous dull polish machine, this technique are applied to the machine of grinding in PCB manufacturing field, belong to one kind and carry out high-accuracy, the automatic mechanical grinding technique that plane ground to the PCB surface.
Background
At present, the plane grinder is classified into a disc grinder, a spindle grinder, a special grinder, and the like, and mainly makes an interaction between an abrasive and a workpiece to achieve a set effect on the surface of the workpiece.
For the PCB industry, mass production in factories focuses on the efficiency of the production line, and the rotating shaft type grinder is obviously more advantageous because the PCB can be conveyed and ground simultaneously during grinding. When the pivot formula is ground machine and is ground the PCB board, be covered with the abrasive material on the grinding roller (being the pivot), the parameter that its during operation needs control has: the PCB board conveying speed, the grinding roller rotating speed, the grinding roller radial feeding amount and the grinding roller axial feeding amount.
The existing PCB lapping machine belongs to a rotating shaft type plane lapping machine, and before production of a new product, the heights of two ends of a grinding roller are often required to be manually adjusted one by one to change the distance between the grinding roller and a PCB to adjust the feeding amount of the grinding roller, so that the depth and the surface roughness effect of PCB surface grinding are ensured.
In addition, after the grinding roller works for a long time, the grinding materials on the grinding roller can be worn, the diameter of the grinding roller can be reduced, and if the distance between the grinding roller and the PCB is not adjusted in time, the grinding depth and the surface roughness effect of the PCB can be reduced. The degree of wear of the grinding roller as a function of time during grinding of the PCB cannot be well determined. Therefore, defective products often appear, the grinding roller is stopped to manually adjust the height of the two ends of the grinding roller for remediation, so that on one hand, defective products appear, on the other hand, production line stopping maintenance is needed, and production efficiency can be seriously affected.
A method for automatically compensating the radial feeding amount of the grinding roller in real time on line is invented to solve the above problems. Specifically, when a new product starts to be produced, a sensor for measuring the thickness is arranged at the inlet of the PCB, paired displacement tables capable of ascending and descending are arranged at two ends of the grinding roller, after the PCB enters the equipment, the thickness of the PCB is measured, and the control system controls the ascending and descending displacement tables at two ends of the grinding roller according to the thickness, so that the PCB can pass through and be ground by proper radial feeding amount. When a production line is in normal production, when the grinding roller grinds a workpiece, the radial feeding amount is different, and the current in the motor for driving the grinding roller to rotate is different, namely, the feeding amount of the grinding roller and the current of the motor for driving the grinding roller to rotate are in a linear relation. The current can be acquired in real time, so that when the abrasion outer diameter of the grinding roller becomes smaller, the feeding amount of the grinding roller can be judged according to the current. And the paired displacement tables which are arranged at the two ends of the grinding roller and can be lifted up and down can accurately control the radial feeding amount of the grinding roller. Like this, control system only needs to gather the current value of the rotatory motor of drive grinding roller, alright control the radial feed volume of grinding roller through control displacement platform, reach accurate and automatic control purpose.
In the existing PCB (printed circuit board) grinding machine, a lifting displacement platform at one end of a grinding roller generally adopts a servo motor as a power source, and a precise ball screw is used for transmission without an additional guide mechanism. The lifting displacement tables at the other end of the grinding roller have the same structure, and the power source of the lifting displacement tables is connected with the servo motor through a transmission shaft, so that the displacement tables at the two ends of the grinding roller share one servo motor.
However, without a guide mechanism, the displacement table is lifted by directly adopting a ball screw assembly (as shown in fig. 1), or only two groups of linear bearings and guide shafts (as shown in fig. 2) are used, after the machine works for a long time, the balls of the ball screw and the motion contact surface part are abraded due to uneven stress, so that the lifting of the displacement table is unstable, the grinding roller is inclined or loosened, the grinding precision is reduced, and the processing quality is affected.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a four-guide-pillar automatic lifting mechanism of a plate grinding machine.
The utility model provides a technical scheme as follows that above-mentioned technical problem took:
a four-guide-column automatic lifting mechanism of a plate grinding machine comprises: the guide mechanism ensures that a moving carrier of the displacement table stably and linearly moves with high precision so as to ensure the set radial feeding amount of the grinding roller, and can select a linear guide rail or a linear bearing and a guide shaft.
Preferably, the guide mechanism selects a linear bearing plus a guide shaft.
Preferably, the guide mechanism selects three groups of linear bearings and guide shafts, and also can select four groups of linear bearings and guide shafts.
Preferably, the guide mechanism selects a mode of symmetrically arranging four groups of guide shafts and linear bearings around the ball screw, so that the stress is more uniform in the lifting process of the displacement table.
Preferably, the method further comprises the following steps: grinding roller operating system, including right displacement platform base (1), it is fixed in on the equipment frame, on four guiding axles (5, 6,7, 8) bottom mounting were on right displacement platform base (1), lead screw nut pair (19) bottom was fixed on right displacement platform base (1) with the bearing, when guaranteeing lead screw rotary motion, lead screw nut was linear motion. Linear bearings (9, 10,11, 12) are assembled in four bearing holes in a right displacement table motion carrier plate (13), and then the linear bearings (9, 10,11, 12) are assembled in corresponding guide shafts (5, 6,7, 8), so that the right displacement table motion carrier plate (13) can stably and easily perform linear sliding.
Preferably, the right displacement table motion carrier plate (13) is assembled on a screw nut of a screw nut pair (19), and the right end of the grinding roller (15) is fixed on the right displacement table motion carrier plate (13); the top end of the lead screw nut pair (19) is in a free and unconstrained state.
Preferably, the top ends of four guide shafts (5, 6,7, 8) are fixed on a top plate (14) of the right displacement table; the speed reducer (4) is provided with an input shaft with two ends capable of inputting, an output shaft perpendicular to the input shaft is provided, and the input shaft at the bottom end of the screw-nut pair (19) is connected with the output shaft of the speed reducer (4) through a coupler.
Preferably, one input shaft of the speed reducer (4) is driven by the servo motor (2) through a transmission mode of a synchronous belt. And the other input shaft of the speed reducer (4) transmits power to the left end lifting displacement table of the grinding roller (15) through a transmission shaft (16) to drive the left end of the grinding roller (15) to lift.
Preferably, the left lifting displacement table structure and the right lifting displacement table structure of the grinding roller (15) are symmetrically arranged, so that two lifting displacement tables can be controlled to perform accurate displacement only by one servo motor.
Preferably, the left side of the grinding roller (15) is provided with a belt wheel which is connected with a high-speed rotating motor through a belt to drive the grinding roller to rotate and grind.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The present invention will be described in detail with reference to the accompanying drawings so that the above advantages of the present invention can be more clearly understood.
FIG. 1 is a schematic structural view of a displacement table structure only adopting a screw-nut pair;
FIG. 2 is a schematic structural diagram of a displacement table adopting a screw-nut pair and 2 groups of linear bearings and guide shafts;
FIG. 3 is a schematic structural diagram of a displacement table adopting a screw-nut pair and 4 groups of linear bearings and guide shafts;
fig. 4 is a schematic diagram of the four-guide-post automatic lifting mechanism of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following specific embodiments.
The invention aims to solve the problems that after a machine works for a long time, balls of a ball screw and a moving contact part are abraded due to uneven stress, a displacement table is unstable, a grinding roller is inclined or loosened, the set radial feeding amount of the grinding roller cannot be ensured, and the grinding precision is reduced.
FIG. 1 is a schematic structural view of a displacement table structure only adopting a screw-nut pair;
FIG. 2 is a schematic structural diagram of a displacement table adopting a screw-nut pair and 2 groups of linear bearings and guide shafts;
FIG. 3 is a schematic structural diagram of a displacement table adopting a screw-nut pair and 4 groups of linear bearings and guide shafts;
fig. 4 is a schematic view of the four-guide-post automatic lifting mechanism of the present invention;
wherein, the reference numbers of figure 1 are respectively: 111. a motion carrier table 112, a screw nut 113 and a screw; fig. 2 reference numerals are respectively: 211. motion stage 212, guide shaft 213, guide shaft 214, linear bearing 215, linear bearing 216, screw 217 and screw nut
Fig. 3 reference numerals are respectively: 311. motion stage, 312, guide shaft, 313, guide shaft, 314, linear bearing, 315, linear bearing, 316, lead screw, 317, lead screw nut, 318, guide shaft, 319, guide shaft
The reference numerals of fig. 4 are respectively: 1. right displacement table base, 2, servo motor, 3, synchronous belt, 4, speed reducer, 5, guide shaft, 6, guide shaft, 7, guide shaft, 8, guide shaft, 9, linear bearing, 10, linear bearing, 11, linear bearing, 12, linear bearing, 13, right displacement table motion carrier plate, 14, right displacement table top plate, 15, grinding roller, 16, transmission shaft, 17, speed reducer, 18, left displacement table base, 19, lead screw nut pair, 20, lead screw nut pair, 21, guide shaft, 22, guide shaft, 23, guide shaft, 24, guide shaft, 25, linear bearing, 26, linear bearing, 27, left displacement table motion carrier plate, 28, left displacement table top plate, 29, grinding roller rotating belt wheel
Specifically, the invention adopts a mode of adding a guide mechanism to the screw transmission type displacement table, and improves the stability and displacement precision of the displacement table mechanism. The guide mechanism ensures that the moving carrier of the displacement table stably and linearly moves with high precision so as to ensure the set radial feeding amount of the grinding roller.
The guide mechanism can be a linear guide rail or a linear bearing and a guide shaft. In combination with the space structure limitation of the device and the cost consideration, the linear bearing plus the guide shaft is preferably selected. Further, the guide mechanism ensures that the moving stage of the displacement table is stable, and may select three groups of linear bearings and guide shafts, or may select four groups of linear bearings and guide shafts (as shown in fig. 3).
Preferably, in the aspect of guiding, the four-guide-post automatic lifting mechanism selects a mode of symmetrically arranging four groups of guide shafts and linear bearings (as shown in fig. 3) around the ball screw, so that the stress is more uniform in the lifting process of the displacement table.
Further, as shown in fig. 3, the core part of the four-guide-post automatic lifting mechanism includes: four guide shafts (312, 313, 317, 318), four linear bearings (314, 315 and two other bearings not shown), a set of ball screw pairs (including screw 316 and screw nut 317), and a motion stage (311). The ball screw nut 317 is centrally arranged on the moving stage 311, and bearing holes for mounting a linear bearing are symmetrically arranged on the moving stage 311 relative to the periphery of the ball screw nut 317. The four guide shafts penetrate through the corresponding bearings respectively, then the two ends of each guide shaft are fixed respectively, the bottom of the lead screw is axially fixed and connected with an external power source, and the upper end of each lead screw penetrates through the lead screw nut to be in a free and unconstrained state. The ball screw pair can convert rotary motion into precise linear motion, and the linear bearing can do precise linear motion along the guide shaft, so that the moving carrier of the displacement table can stably and precisely perform linear motion to ensure the set radial feeding amount of the grinding roller.
This grinding roller lift displacement platform of PCB milling machine adopts four guiding axle structures, guarantees that lifting accuracy is higher to guarantee the radial feed volume of the grinding roller of settlement, improve equipment job stabilization nature greatly, thereby reduce the rejection rate in the production process, improve production efficiency and production quality.
The inventive mechanism, using the principle shown in fig. 3, will now be described by way of example only for one grinding roller lifting system in the plant, as shown in fig. 4, comprising the following components: 1. right displacement table base, 2, servo motor, 3, synchronous belt, 4, speed reducer, 5, guide shaft, 6, guide shaft, 7, guide shaft, 8, guide shaft, 9, linear bearing, 10, linear bearing, 11, linear bearing, 12, linear bearing, 13, right displacement table motion carrier plate, 14, right displacement table top plate, 15, grinding roller, 16, transmission shaft, 17, speed reducer, 18, left displacement table base, 19, lead screw nut pair, 20, lead screw nut pair, 21, guide shaft, 22, guide shaft, 23, guide shaft, 24, guide shaft, 25, linear bearing, 26, linear bearing, 27, left displacement table motion carrier plate, 28, left displacement table top plate, 29 and grinding roller rotation belt wheel.
Further, taking a lifting displacement table at the right end of the grinding roller 15 as an example, the right displacement table base 1 is fixed on the equipment rack, the bottom ends of four guide shafts (5, 6,7, 8) are fixed on the right displacement table base 1, and the bottom end of the lead screw nut pair 19 is fixed on the right displacement table base 1 by a bearing, so that the lead screw nut is ensured to do linear motion when the lead screw rotates. Linear bearings (9, 10,11, 12) are assembled in four bearing holes on the right displacement table motion carrier plate 13, and then the linear bearings (9, 10,11, 12) are assembled in corresponding guide shafts (5, 6,7, 8), so that the right displacement table motion carrier plate 13 can stably and easily perform linear sliding. Then the right displacement table motion carrier plate 13 is assembled on a screw nut of the screw nut pair 19, and the right end of the grinding roller 15 is fixed on the right displacement table motion carrier plate 13. The top end of the screw nut pair 19 is in a free and unconstrained state. Then, the top ends of the four guide shafts (5, 6,7, 8) are fixed to the right stage top plate 14. The speed reducer 4 has an input shaft that can be input at both ends, and has an output shaft that is perpendicular to the input shaft. An input shaft at the bottom end of the screw nut pair 19 is connected with an output shaft of the speed reducer 4 through a coupler, and one input shaft of the speed reducer 4 is driven by the servo motor 2 through a transmission mode of a synchronous belt. And the other input shaft of the speed reducer 4 transmits power to the lifting displacement table at the left end of the grinding roller 15 through a transmission shaft 16 to drive the left end of the grinding roller 15 to lift.
Furthermore, the left lifting displacement table structure and the right lifting displacement table structure of the grinding roller 15 are symmetrically arranged, so that two lifting displacement tables can be controlled to perform accurate displacement only by one servo motor.
The left side of the grinding roller 15 is provided with a belt wheel which is connected with a high-speed rotating motor through a belt to drive the grinding roller to rotate and grind.
Like this, four guide pillar lift displacement platforms of stable and high accuracy drive the grinding roller, guarantee the accurate radial feed volume of grinding roller, cooperate PCB board transport speed, grinding roller rotation rate, grinding roller axial feed volume isoparametric to guarantee again, make PCB dull polish machine have higher precision and stability to improve production efficiency and product yield.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A four-guide-column automatic lifting mechanism of a plate grinding machine comprises: the screw rod transmission type displacement table is characterized by further comprising a guide mechanism, so that the stability and the displacement precision of the displacement table mechanism are improved, the guide mechanism ensures that a moving carrier of the displacement table stably and accurately performs linear motion, so that the set radial feed amount of a grinding roller is ensured, and the guide mechanism can select a linear guide rail or a linear bearing and a guide shaft.
2. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 1, wherein the guide mechanism is selected from a linear bearing and a guide shaft.
3. The four-guide-post automatic lifting mechanism of a board grinding machine as claimed in claim 2, wherein the guide mechanism is selected from three groups of linear bearings and guide shafts, and also can be selected from four groups of linear bearings and guide shafts.
4. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 2, wherein the guide mechanism selects a mode of symmetrically arranging four groups of guide shafts and linear bearings around the ball screw, so that the stress is more uniform in the lifting process of the displacement table.
5. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 1, further comprising: grinding roller operating system, including right displacement platform base (1), it is fixed in the equipment frame, four guiding axles (5, 6,7, 8) bottom is fixed in on right displacement platform base (1), lead screw nut pair (19) bottom is fixed on right displacement platform base (1) with the bearing, when guaranteeing lead screw rotary motion, lead screw nut is linear motion, assemble linear bearing (9, 10,11, 12) in four dead eyes on right displacement platform motion support plate (13), then linear bearing (9, 10,11, 12) assemble in corresponding guiding axle (5, 6,7, 8), guarantee that right displacement platform motion support plate (13) can be stable, light carry out the rectilinear sliding.
6. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 5, characterized in that the right displacement table moving carrier plate (13) is assembled on a screw nut of a screw nut pair (19), and the right end of the grinding roller (15) is fixed on the right displacement table moving carrier plate (13); the top end of the lead screw nut pair (19) is in a free and unconstrained state.
7. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 5, characterized in that the top ends of four guide shafts (5, 6,7, 8) are fixed on a top plate (14) of the right displacement table; the speed reducer (4) is provided with an input shaft with two ends capable of inputting, an output shaft perpendicular to the input shaft is provided, and the input shaft at the bottom end of the screw-nut pair (19) is connected with the output shaft of the speed reducer (4) through a coupler.
8. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 7, wherein one input shaft of the speed reducer (4) is driven by the servo motor (2) through a transmission mode of a synchronous belt, and the other input shaft of the speed reducer (4) transmits power to the lifting displacement table at the left end of the grinding roller (15) through a transmission shaft (16) to drive the left end of the grinding roller (15) to lift.
9. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 8, characterized in that the left lifting and displacing table structure of the grinding roller (15) is arranged symmetrically with the right side, so that only one servo motor is needed to control the two lifting and displacing tables to perform precise displacement.
10. The four-guide-post automatic lifting mechanism of the board grinding machine as claimed in claim 8, wherein a belt wheel is arranged on the left side of the grinding roller (15) and is connected with a high-speed rotating motor through a belt to drive the grinding roller to rotate and grind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467035.7U CN211332722U (en) | 2019-12-31 | 2019-12-31 | Four-guide-post automatic lifting mechanism of plate grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467035.7U CN211332722U (en) | 2019-12-31 | 2019-12-31 | Four-guide-post automatic lifting mechanism of plate grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211332722U true CN211332722U (en) | 2020-08-25 |
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ID=72129272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922467035.7U Expired - Fee Related CN211332722U (en) | 2019-12-31 | 2019-12-31 | Four-guide-post automatic lifting mechanism of plate grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211332722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147944A (en) * | 2021-04-16 | 2021-07-23 | 北京建筑大学 | Wheel leg type walking mechanism based on Leluo triangle |
| CN116447457A (en) * | 2023-04-25 | 2023-07-18 | 广东爱吉尔机器人科技有限公司 | Henhouse inspection robot |
-
2019
- 2019-12-31 CN CN201922467035.7U patent/CN211332722U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147944A (en) * | 2021-04-16 | 2021-07-23 | 北京建筑大学 | Wheel leg type walking mechanism based on Leluo triangle |
| CN116447457A (en) * | 2023-04-25 | 2023-07-18 | 广东爱吉尔机器人科技有限公司 | Henhouse inspection robot |
| CN116447457B (en) * | 2023-04-25 | 2023-12-26 | 广东爱吉尔机器人科技有限公司 | Henhouse inspection robot |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 Termination date: 20201231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |