CN2189732Y

CN2189732Y - Flexible high-precision ruler of metric british system

Info

Publication number: CN2189732Y
Application number: CN 94203632
Authority: CN
Inventors: 魏宝珠
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-07
Filing date: 1994-02-07
Publication date: 1995-02-15
Anticipated expiration: 2004-02-07

Abstract

The utility model discloses a high-precision indicator gage of metric English system, which can simultaneously indicate two kinds of values including a metric system and an English system. A tooth gear is composed of two groups of driving wheels and a group of driven wheels, and each group of driving wheels is coaxially connected by one shaft gear and two gears. The driven wheel group is connected with the two gears coaxially. On the two driven wheels, a long pointer and a short pointer are coaxially quietly matched respectively. A dial with the indication of the long pointer and the short pointer is provided with two kinds of graduations including the metric system and the English system. The utility model is assembled on measuring implements for length, height, depth, etc., once measurement can be realized via the tooth gear of the utility model to the measurement of a workpiece, and simultaneously, the utility model can accurately indicate the two measurement values including the metric system and the English system.

Description

Flexible high-precision ruler of metric british system

The utility model is the metering device that numerical value is measured in indication, particularly suitable be assemblied in length, highly, the degree of depth etc. measures the metric and English indicating gauge of the degree of precision on the measurer.

The band table measurer of Xiao Shouing in the market, its indicating gauge all have only metric system table or table made in Great Britain a kind of, if will carry out the measurement of two kinds of numerical value of metric and English, then need be equipped with metric system two band table measurers made in Great Britain and could satisfy the measurement needs.So not only strengthened the measurer expense, also formed very big inconvenience and labor capacity, and the numerical value of two ruler measurements not necessarily equates after unit conversion becomes equally to the user.

Have only " a kind of metric and English indicating gauge " of data message propaganda recently, its weak point has: one, its reading value is 0.02mm, 0.001in, promptly pointing accuracy low, cause measuring accuracy low.As similar part accurate size is 38.1254mm=1.501in and 38.1889mm=1.5035in etc., just be difficult to survey with reading value 0.02mm, 0.001in metric and English measurer and read 38.1254mm, 38.1889mm, 1.5035in from dial scale, and with the metric and English measurer of reading value 0.01mm, 0.0005in and 0.01mm, 0.001in just easily from the scale directly survey read out.Two, its structure is numerous and diverse, and part is many, and axial dimension is big (thick), waste material.

The purpose of this utility model provides the indicating gauge of measurers such as being applicable to dial caliper, band table height gauge, band table pit gauge, and by the metric system that can not only indicate measured workpiece to the workpiece one-shot measurement simultaneously two kinds of numerical value made in Great Britain, and pointing accuracy is higher.

To achieve these goals, the utility model is provided with gear drive and is made up of two groups of driving wheels and one group of engaged wheel, each group driving wheel is by a shaft gear and two coaxial connections of gear, driven wheels are by two gears (abbreviation engaged wheel) coaxial composition, a coaxial respectively quiet Long pointer and the short pointer of joining on two engaged wheels, adorn on one group of driving wheel that hairspring is eliminated the gap of gear train and the hysterisis error when measuring, the shaft gear of two groups of driving wheels is identical, and is identical with the gear of two groups of driving wheels of each engaged wheel engagement.The gear train ratio of gear that the Long pointer short pointer is rotated is respectively i ₁, i ₂, by each pointer turn around the numerical value (metric system is an integer, made in Great Britain for 0.1in or 0.05in) of indication equal shaft gear calibration garden girth (with the unit of the numerical value of pointer indication with) with ratio of gear i ₁(or i ₂) product, select the modulus gear of shaft gear and each gear.With the turn around quotient that gets divided by reading value of numerical value of indication of each pointer, waits respectively on index dial that (metric system) two encloses scales and mark numeral, unit interior (English system) of telling each quotient lattice scale outside.Be provided with pointer turn around the indication numerical value and reading value more little, the precision of indicating gauge is high more.When two groups of driving wheels rotate one group of engaged wheel rotation of drive, make with the coaxial respectively quiet Long pointer short pointer of joining of engaged wheel and rotate simultaneously, the Long pointer short pointer is indication metric system two kinds of more accurate numerical value made in Great Britain on index dial just, have so just realized the purpose of this utility model.

Owing to adopt such scheme, can when measuring, indicate the metric system and the numerical value made in Great Britain of degree of precision simultaneously, the hysterisis error when only eliminating the gap of gear train and measurement with a hairspring, simple in structure, the axial dimension of table is little, material-saving.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a cut-open view of the present utility model.

Fig. 2 is the left view of accompanying drawing 1, mainly sees index dial and Long pointer short pointer.

Fig. 3 is the gear train cut-away view of " a kind of metric and English indicating gauge ".

Fig. 4 is the synoptic diagram after the utility model assembles with the slide calliper rule with metric and English groove.

Among the figure: 1. short pointer 2. gears 3. gears 4. shaft gears 5. gears 6. gears 7. gears 8. shaft gears 9. hairsprings 10. gears 11. Long pointers 12. tooth bars 13. chi frames 14. blades.

In Fig. 2, the outer ring is that metric system scale, each circle expression 1mm, five equilibrium 100 lattice scales, each lattice scale are represented 0.01mm on the index dial; Inner ring is that graduated in English, each circle expression 0.05in, five equilibrium 100 lattice scales, each lattice scale are represented 0.0005in.

In Fig. 1, gear 2,3, shaft gear 4 are one group of master's driving wheel, and gear 7,10, shaft gear 8 are one group of secondary driving wheel, and gear 5,6 is one group of engaged wheel.Gear 2,3, shaft gear 4 quiet fitting on the same axle, gear 7,10 is quiet join back and shaft gear 8 move fit over coaxial on, shaft gear 8 is passed to gear 7,10 to torque force by hairspring 9 and is made its rotation, coaxial respectively quiet short pointer 1 Long pointer 11 of being furnished with on gear 5,6, shaft gear 4 and 8, gear 2 and 10, gear 3 equate that with 7 modulus the number of teeth equates.Long pointer 11 1mm=Xi that whenever turns around ₁=XZ ₆/ Z ₂, short pointer 1 0.05(in that whenever turns around)=1.27mm=Xi ₂=XZ ₅/ Z ₃, (X is calibration garden girth, the mm of unit of shaft gear 4, Z ₂, Z ₃, Z ₅, Z ₆Be respectively the number of teeth of gear 2,3,5,6, i ₁And i ₂Be respectively the ratio of gear of gear train).Hairspring 9 has been eliminated the gap of gear train and the hysterisis error when measuring.When shaft gear 4,8 rotates, drive the gear 2,3 coaxial and the rotation of gear 7,10 respectively with it, the rotation of gear 2,10 and gear 3,7 drives the rotation of engaged wheel 6,5 again respectively, simultaneously quiet Long pointer 11 and the short pointer 1 on the engaged wheel 5 that fits on the engaged wheel 6 also rotates thereupon together, thereby Long pointer 11 short pointers 1 indicate metric system and two kinds of measurement numerical value made in Great Britain respectively on index dial, Long pointer 11 is that 0.01mm, short pointer 1 are 0.0005in along index dial inner ring revolution 1 lattice scale along index dial outer ring revolution 1 lattice scale.

The structure of each indicating gauge of the utility model is fully identical with Fig. 1, has only the shaft gear 4,8 of each indicating gauge and the modulus of gear 3,5,7 or gear 2,6,10 to distinguish different with the number of teeth.

Fig. 4 is the utility model and the slide calliper rule assembling operating position with metric and English groove: the metric and English indicating gauge of Fig. 1 degree of precision is contained on the slide calliper rule chi frame 13 of metric and English groove, tooth bar 12 is fixed on the blade 14, add torsional forces for during assembling hairspring 9, make the tangent engagement of the flank of tooth, shaft gear 8 and the tangent engagement of the tooth bar 12 other direction flank of tooth on shaft gear 4 and 12 1 directions of tooth bar.Attachable mechanical stage frame 13 when measuring, just produce the shaft gear 4,8 and tooth bar 12 relative motions of indicating gauge, the rotation of shaft gear 4,8 is rotated with regard to driven gear gear train and Long pointer 11 short pointers 1 and indicate metric system and two kinds of more accurate numerical value of measuring made in Great Britain on index dial.

In addition, the utility model is not subjected to the restriction of embodiment, in the utility model scope multiple change can be arranged.Can have only a circle scale as index dial, shorten pointer and Long pointer with long, only distinguish metric system pointer and pointer made in Great Britain with different colours, take down (interior) (outward) printed words on the index dial this moment, and the metric and English reading value is distinguished with the identical color of pointer respectively.And for example, by transposing gear 2,6,10 and the position of gear 3,5,7 and (interior) (outward) word location of reading value, just can realize that Long pointer refers to English system, short pointer refers to metric system.

Claims

1, the metric and English indicating gauge of degree of precision, it is characterized in that gear drive is made up of two groups of driving wheels and one group of engaged wheel, a coaxial respectively quiet Long pointer 11 and the short pointer 1 of joining on two in-line gears 6,5 of driven wheels has metric system and two kinds of scales made in Great Britain on the index dial of Long pointer 11 and short pointer 1 indication.

2, the metric and English indicating gauge of degree of precision as claimed in claim 1, it is characterized in that main initiatively wheels by shaft gear 4, gear 2,3 form quiet fit over coaxial on; Secondary initiatively wheels by gear 7,10 quiet join back and shaft gear 8 move fit over coaxial on, shaft gear 8 is connected with gear 7,10 usefulness hairsprings 9 again.

3, the metric and English indicating gauge of degree of precision as claimed in claim 1 is characterized in that the modulus of shaft gear 4 and 8, gear 2 and 10, gear 3 and 7 equates, the number of teeth also equates.

4, the metric and English indicating gauge of degree of precision as claimed in claim 1, it is characterized in that the gear 2,10 of two groups of driving wheels and the gear 6 and 5 that gear 3,7 drives driven wheels respectively rotate, thereby quiet respectively Long pointer 11 short pointers 1 that fit on the in-line gears 6,5 also rotate thereupon together, and Long pointer 11 short pointers 1 are indicated metric system two kinds of numerical value made in Great Britain simultaneously respectively on index dial.

5, the metric and English indicating gauge of degree of precision as claimed in claim 1, it is characterized in that the gear connection of each metric and English indicating gauge and gear train and the total number of various gear are identical, have only the modulus of the shaft gear 4,8 of each indicating gauge and gear 3,5,7 or gear 2,6,10 different respectively with the number of teeth.