CN102706297A - Novel extension bar of point gauge - Google Patents
Novel extension bar of point gauge Download PDFInfo
- Publication number
- CN102706297A CN102706297A CN2012100839949A CN201210083994A CN102706297A CN 102706297 A CN102706297 A CN 102706297A CN 2012100839949 A CN2012100839949 A CN 2012100839949A CN 201210083994 A CN201210083994 A CN 201210083994A CN 102706297 A CN102706297 A CN 102706297A
- Authority
- CN
- China
- Prior art keywords
- extension bar
- chaining pin
- extension rod
- weight
- point gauge
- 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.)
- Pending
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention relates to a novel extension bar of a point gauge. The extension bar of the point gauge is characterized in that the outer diameter of a main body of the extension bar is reduced, so that the extension bar is manufactured and processed easily, and more importantly, the weight of the extension bar is reduced, and measurement precision of the extension bar is greatly improved. The extension bar of the point gauge overcomes the shortcomings that a hole is axially punched in the center of a main body of a traditional extension bar of a point gauge to reduce the weight of the traditional extension bar, the deep hole is extremely difficult to process, a weight reduction effect is not obvious, and measurement precision is low.
Description
Technical field
The present invention relates to the precision measurement field, can be connected, reach prolongation chaining pin length, increase the purpose of measurement range with the various measuring heads of all contact type measurement appearance and the chaining pin of all size.
Background technology
The fine measuring instrument of contact, it is exactly chaining pin that a critical component is all arranged.Precision during chaining pin contact measured workpiece has directly influenced measuring accuracy.And chaining pin is because the limitation of self material and structure, and its length has certain limit, the chaining pin of metal material, and for example the chaining pin normal length of stainless steel and tungsten carbide material is at 10mm to 50mm.Though the length of carbon fibre chaining pin can reach 100mm, its diameter more than 3mm, is not suitable for the measurement of aperture usually.The chaining pin extension rod is mounted between measuring head and the chaining pin, plays the effect that increases chaining pin length, overcomes the deficiency that can't measure darker room or other specific positions when chaining pin uses separately.
The performance of chaining pin extension rod also has very big influence to measuring accuracy, the wherein most important weight that influence factor is exactly an extension rod.The weight that measuring head can bear is limited, and the size of load weight is very big to the triggering measuring accuracy influence of measuring head, and weight is heavy more, and the triggering measuring accuracy of measuring head is low more, especially when taking measurement of an angle of measuring head is 90 ° of vertical grounds.Therefore the weight that how to alleviate the chaining pin extension rod is chaining pin extension rod key for design.
At present, the chaining pin extension rod all is to be employed in body shaft to come weight reduction to the mode of punching.This method has following drawback: 1, because hole depth and pore diameter size receive material and level of processing restriction, therefore very limited by the weight that punching alleviates.2, in order to alleviate more weight, hole depth and bore dia all will be accomplished the maximal value value, so difficulty of processing is very big.
Novel chaining pin extension rod of the present invention has overcome the drawback of traditional chaining pin extension rod exactly, and the more effective own wt that alleviated has been guaranteed measuring accuracy.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art, and a kind of novel chaining pin extension rod is provided, therefore weight can reach higher measuring accuracy, and be easy to production and processing much smaller than traditional chaining pin extension rod.
The chaining pin extension rod of the present invention's design is characterized in that the diameter of main diameter less than two ends, need just alleviated own wt greatly, and difficulty of processing be far below the difficulty of processing of axial punching in the axial punching of main body.
The benefit that the present invention reaches be the weight of novel chaining pin extension rod be merely traditional chaining pin extension rod about 50%; Therefore the length range of chaining pin extension rod can be expanded to the length of 200mm by the longest 100mm; Even during the vertical-horizontal planar survey, weight still in the load-bearing scope of measuring head, can not influence measuring accuracy fully; Enlarge the measurement range of surveying instrument greatly, solved the deep hole of a lot of large-scale workpieces or the problem that other specific positions can't be measured.
Description of drawings
Fig. 1 is a novel chaining pin extension rod of the present invention, by 1 new-type main body profile, 2 chaining pin retaining threads; 3 extension rod retaining threads; 4 extension rod tooling holes are formed, and indicate the distinctive appearance shown in 1 position through on chaining pin extension rod external diameter, producing, and have reached to be the purpose of chaining pin extension rod weight reduction.
Fig. 2 is traditional extension rod, and 6 for the extension rod main body is used for the hole of loss of weight, is not easy processing, and weight loss effect is also not obvious.
Claims (2)
1. novel chaining pin extension rod.
2. chaining pin extension rod according to claim 1 is characterized in that reaching the purpose that alleviates extension rod weight through the design that reduces the extension rod main diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100839949A CN102706297A (en) | 2012-03-27 | 2012-03-27 | Novel extension bar of point gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100839949A CN102706297A (en) | 2012-03-27 | 2012-03-27 | Novel extension bar of point gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102706297A true CN102706297A (en) | 2012-10-03 |
Family
ID=46899249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100839949A Pending CN102706297A (en) | 2012-03-27 | 2012-03-27 | Novel extension bar of point gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102706297A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4202381A1 (en) * | 1992-01-29 | 1993-08-05 | Friedrich Dipl I Halberschmidt | Motion-sensitive anti-theft alarm for motor vehicle - responds with microswitch closure to lengthening or lateral deflection or ground-contacting telescopic probe under floor |
| CN2935079Y (en) * | 2006-07-25 | 2007-08-15 | 沈阳飞机工业（集团）有限公司 | Scratch depth measuring instrument of corner position |
| CN201322592Y (en) * | 2008-11-21 | 2009-10-07 | 宁波职业技术学院 | Three-dimensional measuring machine gauge head |
| CN202101656U (en) * | 2011-05-13 | 2012-01-04 | 天津大学 | Double-measuring head structure |
-
2012
- 2012-03-27 CN CN2012100839949A patent/CN102706297A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4202381A1 (en) * | 1992-01-29 | 1993-08-05 | Friedrich Dipl I Halberschmidt | Motion-sensitive anti-theft alarm for motor vehicle - responds with microswitch closure to lengthening or lateral deflection or ground-contacting telescopic probe under floor |
| CN2935079Y (en) * | 2006-07-25 | 2007-08-15 | 沈阳飞机工业（集团）有限公司 | Scratch depth measuring instrument of corner position |
| CN201322592Y (en) * | 2008-11-21 | 2009-10-07 | 宁波职业技术学院 | Three-dimensional measuring machine gauge head |
| CN202101656U (en) * | 2011-05-13 | 2012-01-04 | 天津大学 | Double-measuring head structure |
Non-Patent Citations (1)
| Title |
|---|
| 张丽丽等: "新型机械加长杆立柱的设计", 《煤矿机械》, vol. 32, no. 12, 31 December 2011 (2011-12-31), pages 28 - 30 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |