CN201993191U - Measuring head for accurately detecting moment and linearity of hairspring - Google Patents
Measuring head for accurately detecting moment and linearity of hairspring Download PDFInfo
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- CN201993191U CN201993191U CN2011200325791U CN201120032579U CN201993191U CN 201993191 U CN201993191 U CN 201993191U CN 2011200325791 U CN2011200325791 U CN 2011200325791U CN 201120032579 U CN201120032579 U CN 201120032579U CN 201993191 U CN201993191 U CN 201993191U
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- moment
- linearity
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Abstract
The utility model discloses a measuring head for accurately detecting the moment and the linearity of a hairspring, and aims to provide a detecting device which is simple and convenient to operate, displays visually, has high repeatability, can measure the deflection angle on a large scale and can accurately reflect the relation between the moment and the linearity of the hairspring, and is used for solving the problem of product scrapping caused by poor performance of the hairspring in each rotating speed instrument. The measuring head comprises a deflection angle indicator coaxially connected with a motor spindle, a hairspring fixture fixedly connected to the deflection angle indicator, an electromagnetic transforming part used for producing a magnetic moment, a display used for displaying a measured value, a servo motor connected to a rotor at the center of the electromagnetic transforming part, an encoder loaded with a measured rotating speed, and a multi-turn potentiometer used for adjusting the rotating speed, wherein, a free end of a pointer shaft is connected with a pointer bush facilitating the mounting and the detachment of a measured hairspring. The measuring head utilizes a principle of moment balance to transform the tiny moment to a physical quantity easy to measure, and the linearity of the moment of the hairspring can be observed very easily through the display instrument, so that the size of the moment of the hairspring can be measured.
Description
Technical field
The utility model relates to a kind of detection test unit that is used to detect all kinds of rotating speed instrument middle reaches silk moment size and its linearity.
Background technology
Hairspring is to reverse certain angle in the electrical instrument, produces a moment of reaction, makes movable system recovery to zero-bit, electric weight is converted to the element of needle deflection.In some instrument, hairspring also has the effect that electric weight is imported measuring system simultaneously.In machinery instrument, hairspring can also be eliminated drive gap except that producing trimming moment, improves the sensitivity of instrument, and making has fixing transmission contact between part.
At present, be used to test all kinds of rotating speed instrument hairspring moment linearities the hairspring torgue measurement instrument seldom, what use morely is the light-spot type multirange hairspring moment instrument that Shanghai research institute produces.The major part of instrument is a measuring head, and it is that principle according to moving-coil type hairspring supporting instrument designs.But this measuring head mainly by the deflection adjusting knob of measurement axis measurement axis deflection, is formed by the index plate of number of division with by moving-coil and catoptron that two platinum-silver alloys are suspended in the permanent magnet on magnetic core, the dish.Index plate has a T-shape groove that is used for fixing hairspring housing chuck and free to rotate and have a vernier of track.The working beam of measuring head is incident upon catoptron and refracts on the cuing scale again, and promptly having clearly, cursor occurs.Though this light-spot type hairspring moment instrument is easy with respect to the photo-electric reading, when measuring, at first need preheating number minute; The loading hairspring will be regulated a plurality of folder frames and fix the zeroing position; When measuring the moment of certain deflection angle, need to regulate a plurality of knobs, also will select different measurement gears.The operation more complicated.Because the complicacy of operation link also can only be taked sampling Detection to the measurement of hairspring moment, so just be difficult to the qualification rate of each hairspring quality of assurance, even can be because of all kinds of rotating speed instrument middle reaches silk poor performance, and cause scrapping of product.During the clamping hairspring, the adjusting difference of each knob is bigger to the reflections affect of light path, and different operating personnel's adjusting difference, measured result are also different, and this value that makes the multiple clamping of same hairspring measure differs greatly, and repeatability is relatively poor.Next is the limitation of the physical construction of equipment, and the deflection angle that easily causes hairspring to be measured is less, generally about 90 °, makes its linear relationship that is difficult to the accurate whole hairspring of reflection and to the accurate measurement of hairspring moment.Secondly be to weld fixedly securing of connection to hairspring again, will destroy hairspring, influence reusing of hairspring but do like this.
Summary of the invention
The utility model purpose is to provide a kind of easy and simple to handle, intuitive display, good reproducibility, the measuring accuracy height, can realize that deflection angle is measured on a large scale, the pick-up unit that can accurately reflect the sexual intercourse of hairspring moment line is in order to solve the situation that causes product rejection in all kinds of rotating speed instrument because of the hairspring poor performance.
The technical scheme that its technical matters that solves the utility model adopts is: the measuring head of a kind of accurate detection hairspring moment and the linearity, comprise: the angle indicator of a coaxial connection electric machine main shaft and the hairspring anchor clamps that connect firmly at angle indicator, and the electromagnetic conversion parts and the display that is used to show measured value that produce magnetic torque, it is characterized in that, connect the servomotor on the electromagnetic conversion parts center rotor, be loaded with the scrambler of measuring rotating speed and the multiturn potentiometer of regulating rotating speed, be connected with a pointer lining of being convenient to tested hairspring loading and unloading at the free end of needle pivot.
The utility model has following beneficial effect than prior art.
Easy and simple to handle, intuitive display.The utility model utilizes principle of moment balance that the slight moment of hairspring is converted to a physical quantity of measuring easily, original electric current reflection hairspring moment size is become rotating speed reflection hairspring moment size, only need to change rotating speed of motor by multiturn potentiometer, need not change shelves, just can realize the measurement of deflection angle on a large scale, make measurement more accurate, operate easier.Observe the moment size and the whole hairspring linearity of hairspring at an easy rate by moment conversion device and Displaying Meter.
Good reproducibility, the measuring accuracy height can accurately reflect the sexual intercourse of hairspring moment line.The utility model is by two fixed knobs about cancelling, and the newly-increased hairspring anchor clamps adjustment that has step thin slice ply-yarn drill chuck can realize the hairspring clamping to many specifications.And under same mechanism, just can find the relation of motor speed-hairspring moment size.And different moment sizes can not occur, therefore have good repeatability and higher measuring accuracy because of operator's difference.Utilize the balance of electromagnetic induction moment and hairspring moment, change original null setting, just be easy to read the hairspring deflection angle by pointer and index dial.Only need once to demarcate the relation of motor speed one deflection angle and the relation of deflection angle-hairspring moment just can found out.Solve prior art and be difficult to the accurately problem of measurement hairspring moment.
Description of drawings
Further specify the utility model below in conjunction with drawings and Examples, but therefore the utility model is not limited among the described scope of embodiments.
Fig. 1 is the measuring head organigram that the utility model detects hairspring moment and linearity device.
Fig. 2 is the assembly relation synoptic diagram of Fig. 1 middle finger Needle sleeve and hairspring assembly.
Fig. 3 is hairspring clamp structure signal among Fig. 1.
Fig. 4 is the system calibrating view of the utility model tender.
Fig. 5 is a structural principle synoptic diagram of the present utility model.
Among the figure: 1 servomotor, 2 casings, 3 rotation axiss, 4 electromagnetic induction parts, 5 index dials, 6 pointers, 7 pointer linings, 8 needle pivots, 9 screws, 10 hairspring supports, 11 dog screws, 12 hairspring stator chucks, 13 trip bolts, 14 hairspring assemblies, 15 fine rules, 16 weight G.
Embodiment
In Fig. 1, the casing 2 of assembling servomotor 1 has the stepped hole end cap of an alignment measurement head.Be used for showing that the angle indicator of deflection angle is assemblied in the hole of above-mentioned stepped hole end cap.Angle indicator is made up of index dial 5 and pointer 6.Angle indicator links to each other with electromagnetic induction part 4 by needle pivot 8.Pointer 6 is fixed on needle pivot 8 by the center pit of index dial 5, and reflects the deflection angle of tested hairspring.
On needle pivot 8, be connected with one and be convenient to the pointer lining 7 that tested hairspring loads and unloads.Pointer lining 7 shown in Figure 2 has the step axis hole, is shaped on the blind hole of assembling needle pivot 8.Hairspring assembly 14 is sleeved on the joint pin of Needle sleeve 7 upper ends.Adopt conventional hairspring connected mode between hairspring assembly 14 and the pointer lining 7.The mode of utilizing dislocation to fill up between pointer lining 7 and the needle pivot 8 connects, and makes pointer lining 7 and needle pivot 8 firmly to link together, and another benefit of doing like this is to make things convenient for the hairspring loading and unloading.So just can connect hairspring assembly 14 and needle pivot 8, finish the transmission of moment by pointer lining 7.
Consult Fig. 3, hairspring anchor clamps as shown in Figure 3 are made up of hairspring support 10 and hairspring stator chuck 12, and are fixed on the circular scale 5.Pointer 6 is fixed on the axle head of needle pivot 8 by hairspring stator chuck 12.Hairspring stator chuck 12 is thin slice ply-yarn drills.Be provided with the screw 9 of location in the chute of hairspring stator chuck 12.
The hairspring anchor clamps comprise, a right angle hairspring support 10, and hairspring stator 12 is vertically fixed on a right-angle side of hairspring support 10 by dog screw 11, and can move up and down by vertical direction, can carry out suitable adjusting at the clamping height of hairspring.Have horizontal groove on the hairspring stator 12, be shaped on the fixedly fastener hole of hairspring thin slice ply-yarn drill on it, trip bolt 13 can be fixed on the hairspring assembly on the horizontal groove of stator 12 by fastener hole, makes hairspring assembly maintenance level.
Consult Fig. 4.System calibrating is finished by state shown in Figure 4, finishes primary system by weight G16, lining 7, pointer 6 and index dial 5 and demarcates.Weight G16 connects by the fine rule 15 that is wrapped in lining 7.Hairspring moment size can obtain by following computing formula.Hairspring moment T=F * S=mg * S, in the formula: m is the quality of weight G, and g is acceleration of gravity=9.8m/s
2, s is the arm of force.
Consult Fig. 5.The total system device comprises, be loaded with the servo electrical machinery system of the scrambler of measuring rotating speed, the multiturn potentiometer of adjusting servomotor speed in frequency, the hairspring assembly that connects electric machine main shaft, Delta A series Control Driver, the conversion motor speed is converted to the electromagnetic induction part of magnetic torque, five rotating speed displays that LED numeral display module is formed, the hairspring anchor clamps that are used for fixing hairspring are formed.After the start-up system, the regulating frequency operating key changes motor speed return speed value simultaneously, by driven by motor electromagnetic conversion parts, generation is used for the magnetic torque of balance hairspring moment, by the hairspring deflection angle that shows on the deflection indicator, related data is compared, can draw hairspring moment properties parameter.
Claims (5)
1. measuring head that accurately detects the hairspring moment and the linearity, comprise: the angle indicator of a coaxial connection electric machine main shaft (3) and the hairspring anchor clamps that connect firmly at angle indicator, and the electromagnetic conversion parts and the display that is used to show measured value that produce magnetic torque, it is characterized in that, connect the servomotor on the electromagnetic conversion parts center rotor, be loaded with the scrambler of measuring rotating speed and the multiturn potentiometer of regulating rotating speed, be connected with a pointer lining (7) of being convenient to tested hairspring loading and unloading at the free end of needle pivot (8).
2. the measuring head of the accurate detection hairspring moment according to claim 1 and the linearity, it is characterized in that, described pointer lining (7) has the step axis hole, and is shaped on the blind hole of assembling needle pivot (8), and hairspring assembly (14) is sleeved on the joint pin of pointer lining (7) upper end.
3. the measuring head of the accurate detection hairspring moment according to claim 1 and the linearity, it is characterized in that, described servomotor is contained on the center rotor of electromagnetic conversion parts (4), and is electrically connected switch, operating key and the LED interface circuit that is provided with on casing (2) guidance panel.
4. the measuring head of the accurate detection hairspring moment according to claim 1 and the linearity, it is characterized in that, described hairspring anchor clamps have a right angle hairspring support (10), and hairspring stator (12) is vertically fixed on a right-angle side of hairspring support (10) by dog screw (11).
5. the measuring head of the accurate detection hairspring moment according to claim 4 and the linearity, it is characterized in that, have horizontal groove on the described hairspring stator (12), be shaped on the fixedly fastener hole of hairspring thin slice ply-yarn drill on it, trip bolt (13) can be fixed on the hairspring assembly on the horizontal groove of stator (12) by fastener hole, makes hairspring assembly maintenance level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200325791U CN201993191U (en) | 2011-01-25 | 2011-01-25 | Measuring head for accurately detecting moment and linearity of hairspring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200325791U CN201993191U (en) | 2011-01-25 | 2011-01-25 | Measuring head for accurately detecting moment and linearity of hairspring |
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| Publication Number | Publication Date |
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| CN201993191U true CN201993191U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200325791U Expired - Lifetime CN201993191U (en) | 2011-01-25 | 2011-01-25 | Measuring head for accurately detecting moment and linearity of hairspring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674742A (en) * | 2012-09-19 | 2014-03-26 | 天津海鸥表业集团有限公司 | Method for dynamically measuring rigidity of silicon balance spring and rotational inertia of balance wheel and measurement device |
| CN111190340A (en) * | 2018-11-15 | 2020-05-22 | 尼瓦洛克斯-法尔股份有限公司 | Method for measuring the moment of a timepiece balance spring and production support tool system |
-
2011
- 2011-01-25 CN CN2011200325791U patent/CN201993191U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674742A (en) * | 2012-09-19 | 2014-03-26 | 天津海鸥表业集团有限公司 | Method for dynamically measuring rigidity of silicon balance spring and rotational inertia of balance wheel and measurement device |
| CN103674742B (en) * | 2012-09-19 | 2018-03-06 | 天津海鸥表业集团有限公司 | A kind of dynamic measurement silicon rigidity of hairspring and the method and measurement apparatus for measuring inertia |
| CN111190340A (en) * | 2018-11-15 | 2020-05-22 | 尼瓦洛克斯-法尔股份有限公司 | Method for measuring the moment of a timepiece balance spring and production support tool system |
| CN111190340B (en) * | 2018-11-15 | 2021-09-17 | 尼瓦洛克斯-法尔股份有限公司 | Method for measuring the moment of a timepiece balance spring and production support tool system |
| US11921468B2 (en) | 2018-11-15 | 2024-03-05 | Nivarox-Far S.A. | Method and production support tooling for measuring the torque of a timepiece balance spring |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
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| CX01 | Expiry of patent term |