CN101988849B - Weight exchanging rotary table with speed change function - Google Patents
Weight exchanging rotary table with speed change function Download PDFInfo
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- CN101988849B CN101988849B CN2009101625540A CN200910162554A CN101988849B CN 101988849 B CN101988849 B CN 101988849B CN 2009101625540 A CN2009101625540 A CN 2009101625540A CN 200910162554 A CN200910162554 A CN 200910162554A CN 101988849 B CN101988849 B CN 101988849B
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- rotary table
- rotating disk
- location positioning
- counterweight
- weight
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Abstract
The invention belongs to a weight device, in particular to a weight exchanging rotary table with a speed change function. The weight exchanging rotary device comprises a rotary shaft, wherein a rotary table is arranged on the rotary shaft; the rotary table is provided with a first position locating mark and a second position locating mark; the rotary shaft is connected with a torque motor; the torque motor is respectively connected with a first direct current power supply and a second direct current power supply; and the rotary table is also provided with a photoelectric sensor. The weight exchanging rotary table can effectively reduce the impact on the rotary shaft when the rotary table stops, enhances the locating stopping precision, ensures that weights can return the initial positions after the weights are subject to the second exchange, and can prolong the service life of the rotary shaft.
Description
Technical field
The invention belongs to a kind of counterweight device, be specifically related to a kind of counterweight exchange rotating disk with speed changing function.
Background technology
According to the regulation of " JJG99-2006 weight detecting rules ", the quality amount passes and all to adopt methods of substitution, like two methods of substitution, single method of substitution, method of substitution etc. continuously.
Basic operational steps is: (1) on balance reappears quality difference that standard test weight quality (5) calculate seized counterweight and standard test weight in reproduction standard test weight quality (3) on the balance in the seized counterweight quality of reproduction (4) on the balance according to selected standard test weight of seized counterweight and balance (2).For obtaining higher accuracy of measurement, step (2) can repeatedly circulate to (4).
In the said process, standard test weight and seized counterweight be exchange repeatedly on the balance scale pan, for realizing that counterweight exchanges automatically, needs design counterweight exchange rotating disk.Because system load is from 4kg to 40kg, and load is symmetrically distributed away from rotating shaft, so when the rotation of counterweight exchange rotating disk, the moment of inertia of countershaft is very big, and since rotational kinetic energy be directly proportional with moment of inertia, with square being directly proportional of rotating speed.Bearing accuracy when stopping for improving rotating disk, Precision Machining is carried out in rotating shaft, controls its gap.Therefore, be the raising rotating shaft life-span, the impact of countershaft when inevitable requirement reduction rotating disk stops, it is less to make rotating disk stop preceding rotational kinetic energy.For the rotating disk that has formalized and institute's loading counterweight, moment of inertia is a certain value, can not change, and therefore can only consider to reduce the rotating speed of rotating disk, but the angle of rotating is certain, reduces rotating speed, must reduce system works efficient.
Summary of the invention
The purpose of this invention is to provide a kind of through the counterweight exchange rotating disk anglec of rotation (180 °) is carried out subregion; In 175 ° of rotations, pass through with higher speed; In 5 ° of rotations passing through than low velocity, the counterweight exchange rotating disk that implementation efficiency, precision and life-span are taken into account with speed changing function.
The present invention realizes like this; Have the counterweight exchange rotating disk of speed changing function, it comprises rotating shaft, and rotating shaft is provided with rotating disk; On rotating disk, be provided with first location positioning sign and second location positioning sign; Be connected with torque motor in the rotating shaft, torque motor is connected with second direct supply with first direct supply respectively, on rotating disk, also is provided with photoelectric sensor.
Described first location positioning is masked as 180 ° of location positioning signs, and second location positioning is masked as 175 ° of location positioning signs.
Advantage of the present invention is, the impact of countershaft improved and stops bearing accuracy when it can effectively reduce rotating disk and stops, and ensures that counterweight can get back to initial position after the exchange for the second time, and can prolong the rotating shaft life-span.
Description of drawings
Fig. 1 is the counterweight exchange rotating disk synoptic diagram with speed changing function provided by the present invention;
Fig. 2 is the vertical view of Fig. 1.
Among the figure, 1 photoelectric sensor, 2 rotating disks, 3 first location positioning signs, 4 second location positioning signs, 5 torque motors, 6 programmable logic controller (PLC)s, 7 first direct supplys, 8 second direct supplys, 9 rotating shafts.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in detail:
Counterweight exchange rotating disk with speed changing function; It comprises rotating shaft 9; Rotating shaft 9 is provided with rotating disk 2, on rotating disk 2, is provided with first location positioning sign 3 and second location positioning sign 4, is connected with torque motor 5 in the rotating shaft 9; Torque motor 5 is connected with second direct supply 8 with first direct supply 7 respectively, on rotating disk 2, also is provided with photoelectric sensor 1.
Described first location positioning sign 3 is 180 ° of location positioning signs, and second location positioning sign 4 is 175 ° of location positioning signs.
Concrete method of application of the present invention is following:
A) as shown in Figure 1, coupling torque motor 5 and rotating shaft 9, make the motor power supply after, rotating shaft turns clockwise.
B) 3 and 175 ° of location positioning signs 4 of 180 ° of location positioning signs are set respectively at the two ends of rotating disk 2.
C) directly on the positioning mark space, photoelectric sensor 1 is set, choice of location is when sensor is responsive to 180 ° of location positioning signs 3, and rotating disk just stops on 180 ° of points.
D) be programmable logic controller (PLC) 6 codings, make it receive motor when rotating order, output 15V electric current, in first time of receiving photoelectric sensor 1 behind the pulse signal, its output current switches to 5V, receive pulse signal once more after, stop output current.
E) through computing machine, coding sends motor when needed and rotates order, realizes the automatic exchange of counterweight.
Load with counterweight exchange rotating disk is that 40kg is an example, and effect is described.When not adopting the speed change scheme, the moment of inertia of rotating disk and load countershaft is 6.4kgm
2If rotating shaft is with the angular velocity rotation of 0.1rad/s, revolution takes about 30s for moving 180 °, and the rotational kinetic energy when stopping is 0.032J.When adopting the speed change scheme, in 175 °, rotating shaft is with the angular velocity rotation of 0.5rad/s, and in remaining 5 °, rotating shaft is then rotated 180 ° and taken about 8s with the angular velocity rotation of 0.05rad/s, and the rotational kinetic energy when stopping is 0.008J.Above-mentioned narration is summarized in following table.
Can find out from last table, after the realization subregion speed change, decline greatly consuming time, and the impact energy of countershaft reduces significantly.
The present invention is applied to exchange the rotating disk that designs into counterweight; The impact of countershaft in the time of can effectively reducing rotating disk and stop to improve and stops bearing accuracy, ensures that counterweight can get back to initial position after the exchange for the second time; And can prolong the rotating shaft life-span, belong to the mass metrology technical field.
According to the rotation characteristics (turn clockwise all the time, and rotate 180 °) of rotating shaft at every turn, consider rotational angle or turned position are carried out subregion; In 180 ° of rotations; 175 ° of rotations at a relatively high speed, remaining 5 ° with than the low velocity rotation up to stopping, implementation efficiency, precision and life-span are taken into account like this.
Claims (1)
1. the counterweight exchange rotating disk that has speed changing function; It is characterized in that: it comprises rotating shaft (9), and rotating shaft (9) is provided with rotating disk (2), on rotating disk (2), is provided with first location positioning sign (3) and second location positioning sign (4); Be connected with torque motor (5) in the rotating shaft (9); Torque motor (5) is connected with second direct supply (8) with first direct supply (7) respectively, and described first location positioning sign (3) is 180 ° of location positioning signs, and second location positioning sign (4) is 175 ° of location positioning signs; Directly on first location positioning sign (3) space; Photoelectric sensor (1) is set, and choice of location is when photoelectric sensor (1) identifies (3) sensitivity to 180 ° of location positioning, and rotating disk just stops on 180 ° of points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101625540A CN101988849B (en) | 2009-08-03 | 2009-08-03 | Weight exchanging rotary table with speed change function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101625540A CN101988849B (en) | 2009-08-03 | 2009-08-03 | Weight exchanging rotary table with speed change function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988849A CN101988849A (en) | 2011-03-23 |
| CN101988849B true CN101988849B (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101625540A Active CN101988849B (en) | 2009-08-03 | 2009-08-03 | Weight exchanging rotary table with speed change function |
Country Status (1)
| Country | Link |
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| CN (1) | CN101988849B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697975B (en) * | 2013-12-18 | 2015-10-28 | 中国计量科学研究院 | A kind of Weight change meausring apparatus and measuring method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020042320A (en) * | 2000-11-30 | 2002-06-05 | 양재신 | Automatic pallet changer for high speed |
| CN2890875Y (en) * | 2005-12-29 | 2007-04-18 | 中国航空工业第一集团公司北京航空制造工程研究所 | Automatic rim exchange mechanism of tire dynamic balance measuring machine |
| CN101391380A (en) * | 2008-11-05 | 2009-03-25 | 福州科理技术开发有限公司 | Multi-station dial capable of changing track |
| JP2009107111A (en) * | 2007-10-09 | 2009-05-21 | Deckel Maho Pfronten Gmbh | Milling and drilling machine comprising pallet exchanger |
-
2009
- 2009-08-03 CN CN2009101625540A patent/CN101988849B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020042320A (en) * | 2000-11-30 | 2002-06-05 | 양재신 | Automatic pallet changer for high speed |
| CN2890875Y (en) * | 2005-12-29 | 2007-04-18 | 中国航空工业第一集团公司北京航空制造工程研究所 | Automatic rim exchange mechanism of tire dynamic balance measuring machine |
| JP2009107111A (en) * | 2007-10-09 | 2009-05-21 | Deckel Maho Pfronten Gmbh | Milling and drilling machine comprising pallet exchanger |
| CN101391380A (en) * | 2008-11-05 | 2009-03-25 | 福州科理技术开发有限公司 | Multi-station dial capable of changing track |
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| Publication number | Publication date |
|---|---|
| CN101988849A (en) | 2011-03-23 |
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