CN2509555Y - Slide calliper for measuring radius - Google Patents
Slide calliper for measuring radius Download PDFInfo
- Publication number
- CN2509555Y CN2509555Y CN 01276703 CN01276703U CN2509555Y CN 2509555 Y CN2509555 Y CN 2509555Y CN 01276703 CN01276703 CN 01276703 CN 01276703 U CN01276703 U CN 01276703U CN 2509555 Y CN2509555 Y CN 2509555Y
- Authority
- CN
- China
- Prior art keywords
- radius
- slide calliper
- measuring
- calliper rule
- caliper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a slide calliper for measuring radius which measures the radius through three measuring poles base on the prior common caliper, wherein, two measuring poles are arranged on a main caliper, while the other is arranged on an accessory caliper to move opposite to a fixing pole along with the accessory caliper. When in measuring, the accessory caliper is moved to make the three measuring poles contact with the measured round arc; and the radius of the measured round arc is gained according to the coordinate of the three contact points. The utility model adopts the same electronic line and the capacitance sensor with the prior electric digital caliper when completes the digital display function of radius measuring, only adding a radius counting and displaying control program in the program which is solidified in the EPROM. The utility model can be used for measuring the radius of the inner round arc and outer round arc.
Description
Affiliated technical field
The utility model relates to a kind of radius measurement instrument, especially a kind of slide calliper rule of measuring radius.
Background technology
Measure radius at present and generally adopt two kinds of methods in factory's reality: a kind of is to adopt radius caliper, i.e. radius gauge, the gauger by examination survey find out with measured circular arc coincide best radius gauge.This method is simple, but because the radius gauge restricted number, the circular arc that has can not find and its corresponding radius gauge.Another kind is to adopt coordinate measurment instrument, and as ray cast instrument or three-coordinate measuring machine-tool, any 3 coordinate calculates arc radius on the circular arc by measuring, and this method is measured accurately, but needs bigger investment, and operation is also complicated.
Existing common slide calliper rule do not possess the function of direct measurement radius, can only obtain radius by diameter measurement, if the central angle of measured circular arc is spent less than 180, diameter then can not be recorded.There is a kind of special use to measure the circular arc slide calliper rule of external arc diameter in addition, it obtains the external arc diameter by the chord length of measuring the circular arc of specifying action, with good grounds chord length and diameter one-to-one relationship on slide calliper rule and target scale, it has the action requirement to measured circular arc, and is limited to external arc.
Summary of the invention
In the weak point that is showed aspect the radius measurement, the utility model provides a kind of slide calliper rule of available radius measurement at radius caliper, coordinate measurment instrument and existing slide calliper rule, can measure the radius of inside and outside circular arc easily.
The technical scheme that its technical matters that solves the utility model adopts is: adopt three sounding rods to carry out radius measurement on the structure of existing common slide calliper rule, wherein two are installed on the main scale, are called and decide bar; Another is installed on the secondary chi, is called moving bar.During measurement, moving sets chi, moving bar just move relative to deciding bar, and three sounding rods are contacted with measured circular arc simultaneously.Concern according to the amount of movement of moving bar and the shape and their relative installation of moving direction and three sounding rods, can in arbitrary selected coordinate system, calculate the coordinate of three contact points, just can calculate the radius of measured circular arc then according to the coordinate of three contact points.When realizing the digital Presentation Function of radius measurement, directly adopt the electronic circuit and the capacitance type sensor of existing electronic type digital display calliper, only it is solidificated in the program increase radius calculation among the EPROM and the function of demonstration thereof.
The beneficial effects of the utility model are to measure the radius of inside and outside circular arc easily, and cost is low, and is simple in structure, and it is big to survey scope.
Description of drawings
Fig. 1 is the front elevation of first embodiment of the present utility model.
Fig. 2 is the front elevation of second embodiment of the present utility model.
Fig. 3 is the front elevation of the 3rd embodiment of the present utility model.
Fig. 4 is the front elevation of the 4th embodiment of the present utility model.
Fig. 5 is an initial relative position synoptic diagram of measuring first three sounding rod.
Fig. 6 is the relative position synoptic diagram of three sounding rods when finishing the outer arc radius measurement.
Fig. 7 is the relative position synoptic diagram of three sounding rods when finishing the inner arc radius measurement.
1. main scales among the figure, 2. secondary chi is 3. decided bar, 4. depth survey bar, 5. moving bar is 6. decided bar, 7. bearing,
Embodiment
In first embodiment shown in Figure 1, utilize depth survey bar (4) on the secondary chi (2) as the moving bar of radius measurement; Decide bar (3) and decide bar (6) to be installed on the bearing (7), they are identical interchangeable partses; Bearing (7) is installed on the main scale (1).Moving bar can pass in the hole from bearing (7), and moving bar is equal to deciding bar (3) and deciding the distance of bar (6), and three sounding rods are parallel is installed on the straight line; Three sounding rods adopt spherical end surface to contact with measured circular arc, and spherical radius is identical.Slide calliper rule shown in Figure 1 are non-electronic type slide calliper rule, during measurement, calculate the radius of measured circular arc by measured moving bar amount of movement.Its radius calculation principle is as follows: in Fig. 5, Fig. 6, Fig. 7, L is for deciding pole length, and W two decides the centre distance of bar, and H is measured moving bar amount of movement, and R is the bulb radius of sounding rod.The computing formula of outer arc radius r is: r=(L-H)/2+W
*W/ (8
*L-8
*H)-and R, the computing formula of inner arc radius r is: r=(H-L)/2+W
*W/ (8
*H-8
*L)+R.
In second embodiment shown in Figure 2, to decide bar (3) and decide bar (6) and directly use screw thread to connect with main scale (1), they are identical interchangeable partses; Moving bar (5) depth survey bar (4) direct with screw thread and on the secondary chi (2) connects.Three sounding rods adopt spherical end surface to contact with measured circular arc, and spherical radius is identical.Slide calliper rule shown in Figure 2 are the electronic type digital display calliper, adopt electronic circuit and the capacitance type sensor identical with existing electronic type digital display calliper, only increase radius calculation and show the program of controlling in its EPROM.
The 3rd embodiment shown in Figure 3 is similar to embodiment shown in Figure 2, and unique difference is three sounding rods have been moved on to the other end of slide calliper rule.Its feature is the complete depth survey function that has kept existing slide calliper rule.
The 4th embodiment shown in Figure 4 is first embodiment and the combining of the 3rd embodiment.The difference of it and first embodiment is that its susceptor design has had variation, and this design can increase the distance between two fixed bars.Its feature is that radius measurement all can be carried out in the slide calliper rule two ends, and an end can be used for measuring short circular arc, and the other end can be used for measuring long circular arc.
Claims (6)
1. slide calliper rule that can be used for radius measurement, comprise main scale and secondary chi, it is characterized in that: on the structure of existing slide calliper rule, adopt three sounding rods to carry out radius measurement, wherein two is to decide bar, be installed on the main scale, another is installed on the secondary chi for moving bar, when measuring circular arc, three sounding rods keep in touch with measured circular arc simultaneously.
2. the slide calliper rule that can be used for radius measurement according to claim 1 is characterized in that: equipped the electronic caliper of numeric display unit, can carry out numeral to measurement data and show.
3. the slide calliper rule that can be used for radius measurement according to claim 1 is characterized in that: respectively adopt three sounding rods at the two ends of slide calliper rule, can measure the radius of the circular arc of different arc.
4. the slide calliper rule that can be used for radius measurement according to claim 1 is characterized in that: the end face that three sounding rods contact with measured circular arc is sphere or plane.
5. the slide calliper rule that can be used for radius measurement according to claim 1 is characterized in that: the depth survey bar of using existing slide calliper rule is as moving bar.
6. the slide calliper rule that can be used for radius measurement according to claim 1 is characterized in that: three sounding rods can be detachable, also can be non-dismountable formulas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276703 CN2509555Y (en) | 2001-12-04 | 2001-12-04 | Slide calliper for measuring radius |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276703 CN2509555Y (en) | 2001-12-04 | 2001-12-04 | Slide calliper for measuring radius |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509555Y true CN2509555Y (en) | 2002-09-04 |
Family
ID=33680718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01276703 Expired - Fee Related CN2509555Y (en) | 2001-12-04 | 2001-12-04 | Slide calliper for measuring radius |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509555Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846486A (en) * | 2010-06-03 | 2010-09-29 | 中铁隆昌铁路器材有限公司 | Large circular arc radius measuring instrument and measuring method |
| CN108225155A (en) * | 2018-02-01 | 2018-06-29 | 中车株洲电机有限公司 | Suitable for the measurement tooling and method of large scale radius |
| CN113237411A (en) * | 2021-05-20 | 2021-08-10 | 广东电网有限责任公司 | Power cable turning radius measuring tool and measuring method thereof |
-
2001
- 2001-12-04 CN CN 01276703 patent/CN2509555Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846486A (en) * | 2010-06-03 | 2010-09-29 | 中铁隆昌铁路器材有限公司 | Large circular arc radius measuring instrument and measuring method |
| CN108225155A (en) * | 2018-02-01 | 2018-06-29 | 中车株洲电机有限公司 | Suitable for the measurement tooling and method of large scale radius |
| CN113237411A (en) * | 2021-05-20 | 2021-08-10 | 广东电网有限责任公司 | Power cable turning radius measuring tool and measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zheng Haibo Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |