WO2015183189A1 - Pied à coulisse de grande taille - Google Patents

Pied à coulisse de grande taille Download PDF

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Publication number
WO2015183189A1
WO2015183189A1 PCT/SG2014/000244 SG2014000244W WO2015183189A1 WO 2015183189 A1 WO2015183189 A1 WO 2015183189A1 SG 2014000244 W SG2014000244 W SG 2014000244W WO 2015183189 A1 WO2015183189 A1 WO 2015183189A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring jaw
straight steel
steel ruler
measuring
fixed
Prior art date
Application number
PCT/SG2014/000244
Other languages
English (en)
Inventor
Yongyan Liu
Haiyan Liu
Original Assignee
Forevertrust International (S) Pte. Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Forevertrust International (S) Pte. Ltd. filed Critical Forevertrust International (S) Pte. Ltd.
Priority to PCT/SG2014/000244 priority Critical patent/WO2015183189A1/fr
Publication of WO2015183189A1 publication Critical patent/WO2015183189A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/20—Slide gauges

Definitions

  • the present invention relates to a simple large-size vernier caliper for measurement, in particular to a long measuring jaw, which is applicable to a low-accuracy internal and external diameter measurement and belongs to an improved measurement tool.
  • the vernier caliper has characteristics as below: generally, the vernier caliper can only measure lengths due to the limitation of the height of the measuring jaw; the vernier caliper is expensive and is more expensive in the case of customization; and the vernier caliper is cumbersome due to the use of all-metal stainless steel or measuring instrument steel. In the case of the accuracy requirement between a common vernier caliper and a straight steel ruler, a measuring instrument is required for measuring, for instance, diameters of various types of upright posts, round tables and so on.
  • the objective of the present invention is to fill in the gaps in the prior art and provide a simple vernier caliper, which may be applied in a situation of large-size rough measurement and have advantages of easily obtained materials, good processing performance and portable use.
  • the vernier caliper adopts a directly purchased straight steel ruler as a main ruler and a movable measuring jaw sliding on the main ruler as an auxiliary ruler; a fixed measuring jaw is provided with a recess into which a front portion of a zero count of the straight steel ruler is embedded; the straight steel ruler is punched; a rivet or screw connection is adopted; and a fixing position is at a place where a measuring surface of the fixed measuring jaw is aligned with a scale mark of 100mm - (1 to 5)mm on the front portion of the straight steel ruler.
  • round steels are embedded into the fixed measuring jaw and the movable measuring jaw and taken as internal measuring heads, and slidable and extendible steel bars are embedded into width and external diameter measuring surfaces. Numerical readings of the width and the external diameter are obtained in a vernier scale mark at a lower left notch of the movable measuring jaw, and a numerical reading of the internal diameter is obtained in a vernier scale mark at an upper right notch of the movable measuring jaw.
  • the fixed measuring jaw and the movable measuring jaw of the vernier caliper are formed by machining an engineering plastic sheet; recesses are formed on measuring surfaces of the fixed measuring jaw and the movable measuring jaw; and square steel bars are mounted into the recesses and parallel to each other.
  • the square steel bars are fixed by being attracting with two or more magnetic steels for the convenience of sliding, and the magnetic steels run through the measuring jaws and are tightly fitted with the bottoms of the wear-resistant steel bar recesses.
  • One or more magnetic steel is fixed on the movable measuring jaw to attract the straight steel ruler; the movable measuring jaw slides on the straight steel ruler with the recess thereof; the recess of the movable measuring jaw has a depth equal to a thickness of the straight steel ruler, and a width equal to a width of the straight steel ruler; and the bottom of the recess is parallel to the magnetic steel.
  • the laser marking method may also be used to modify first number of integer multiple marks on the straight steel ruler; only two-digit integer multiples are directed; and the modified quantity is not much.
  • the present invention has advantages of low cost, capability of being self-manufactured with one miller, capability of slideably elongating the measuring heads in the case of measuring large-diameter cylinders, light weight and long durability.
  • FIG. 1 is a perspective view of an embodiment of the present invention.
  • FIG. 2 is a plan view of a fixed measuring position of the large-size vernier caliper as shown in FIG. 1.
  • FIG. 3 is a partial enlarged perspective view of numerical readings at the measuring position as shown in FIG. 2.
  • the dimension of the purchased straight steel ruler 6 is 2000x40x2mm, and the straight steel ruler is made of a ferritic stainless steel material which can be attracted by a magnet.
  • a ruler body is drilled and riveted with a channel steel 7 formed by bending a sheet or a 40x40 finished aluminum profile.
  • a U-shaped recess is formed at the rear of the fixed measuring jaw 3; a round reel 4 is directly pressed on the straight steel ruler 6; the fixed measuring jaw 3 and the channel steel 7 are formed together by riveting with a rivet 5; and a round steel 4 is also embedded into the movable measuring jaw 9 and taken as an internal diameter measuring head.
  • recesses are formed on measuring surfaces of the fixed measuring jaw 3 and the movable measuring jaw 9; the bottom of the recess and a slotted hole are communicated with each other; a square magnet 2 is tightly fitted in the slotted hole; a slideable square steel bar 1 made of high-speed steel 5x5x200mm is embedded into the recess; and a chamfer angle is formed on the top of the square steel bar 1 ; and a measured position is grinded into an inclined plane.
  • the fixed measuring jaw and the movable measuring jaw are manufactured by milling 12mm polyformaldehyde (POM) sheets, including the process of marking vernier lines.
  • POM polyformaldehyde
  • the round steel 4, i.e., the internal measuring head, is made of ⁇ 6 hard-drawn wrought stainless steel wire.
  • FIG. 2 is a plan view of an operating measuring position of the vernier caliper.
  • the double dot dash line of the measuring head is an extendible maximum size, for ensuring that the square steel bars 1 are attracted by two magnetic steels 2; and the distance from the measuring head as illustrated to the end surface of the straight steel ruler 6 is the theoretic maximum radius for the measurement of the external diameter.
  • the measured width and the measured external diameter are 300, and the internal diameter is 400.
  • a zero scale mark on the vernier is aligned with a 10cm scale mark on the straight steel ruler 6, and the outer size of the two round steels 4 is 100.
  • one round magnetic steel 8 is tightly fitted on the movable measuring jaw 9 to attract the straight steel ruler 6 and make it slide in the recess.
  • FIG. 3 illustrates the relation between scale values of the straight steel ruler 6; a digital scale portion covered by the movable measuring jaw 9 is indicated by dotted lines; and an edge distance between a zero scale mark at the lower left notch and the movable measuring jaw 9, namely the distance between the measuring surface of the fixed measuring jaw 3 and a 10cm scale mark of the straight steel ruler 6, is 1.5mm.
  • the reading of the zero scale mark at the lower left notch aligned with a 40cm scale mark of the straight steel ruler 6 is 300mm
  • the reading of the zero scale mark on the upper right notch aligned with a 50cm scale mark of the straight steel ruler 6 is 400mm, that is, reducing 100mm from the actual reading, which can be conveniently remembered.
  • the accuracy of the vernier caliper in the embodiment is 0.1 mm.
  • the n th scale mark on the vernier is aligned with a scale mark on the main ruler; the decimal value of the measured dimension is nxO.lmm; and the sum of the integer and the decimal is the measured value.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

L'invention concerne un pied à coulisse simple de grande taille destiné à la mesure, qui comprend : une règle droite en acier (6) qui est directement achetée et utilisée comme règle principale ; et une mâchoire de mesure mobile (9), qui est constituée de matière plastique d'ingénierie, se déplace sur la règle droite en acier (6) et est utilisée comme règle secondaire, une surface de mesure interne d'une mâchoire de mesure fixe (3) étant directement appuyée sur un repère d'échelle d'approximativement 10 cm de la règle droite en acier (6) et des barres rondes fixes (6) étant intégrées dans la mâchoire de mesure fixe (3) et la mâchoire de mesure mobile (9) et utilisées comme têtes de mesure de diamètre interne, des barres en acier résistantes à l'usure coulissantes et extensibles (1) étant intégrées dans des têtes de mesure de largeur et de diamètre externe, et les lectures de diamètre interne et de diamètre externe étant respectivement obtenues au niveau de repères d'échelle à vernier au niveau de deux encoches de la mâchoire de mesure mobile (9).
PCT/SG2014/000244 2014-05-30 2014-05-30 Pied à coulisse de grande taille WO2015183189A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SG2014/000244 WO2015183189A1 (fr) 2014-05-30 2014-05-30 Pied à coulisse de grande taille

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2014/000244 WO2015183189A1 (fr) 2014-05-30 2014-05-30 Pied à coulisse de grande taille

Publications (1)

Publication Number Publication Date
WO2015183189A1 true WO2015183189A1 (fr) 2015-12-03

Family

ID=54699381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2014/000244 WO2015183189A1 (fr) 2014-05-30 2014-05-30 Pied à coulisse de grande taille

Country Status (1)

Country Link
WO (1) WO2015183189A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU175579U1 (ru) * 2017-06-14 2017-12-11 Акционерное Общество Кировский Завод "Красный Инструментальщик" Штангенциркуль разметочный
CN107806808A (zh) * 2017-12-07 2018-03-16 中建八局第四建设有限公司 一种钢筋间距调准器
CN108344339A (zh) * 2018-02-06 2018-07-31 海宁安捷复合材料有限责任公司 一种碳纤维游标卡尺
CN108731646A (zh) * 2017-04-14 2018-11-02 北京市水利规划设计研究院 水平位移观测标尺、测量结构、水闸观测系统及观测方法
CN109307462A (zh) * 2018-07-24 2019-02-05 安徽皖南电机股份有限公司 磁钢检具
CN109900189A (zh) * 2019-04-22 2019-06-18 中信戴卡股份有限公司 一种轮毂内腔直径测量装置
CN110186353A (zh) * 2019-07-08 2019-08-30 马鞍山钢铁股份有限公司 火车车轮径向尺寸量具及火车车轮径向尺寸测量方法
CN113530740A (zh) * 2021-06-02 2021-10-22 中国长江电力股份有限公司 水轮发电机组定子定位筋弦距精确测量装置及方法
CN114935293A (zh) * 2022-05-12 2022-08-23 蚌埠凯盛工程技术有限公司 一种斜轴承座的尺寸测量装置及其测量方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1321567A (en) * 1919-11-11 spindler
US1341865A (en) * 1918-09-26 1920-06-01 Solberg Knut Elving Calipering-rule
CN2173945Y (zh) * 1993-10-14 1994-08-10 青岛量具厂 游标钢直尺
US6205673B1 (en) * 1999-02-27 2001-03-27 Otis M. Larsen Fractional-decimal vernier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1321567A (en) * 1919-11-11 spindler
US1341865A (en) * 1918-09-26 1920-06-01 Solberg Knut Elving Calipering-rule
CN2173945Y (zh) * 1993-10-14 1994-08-10 青岛量具厂 游标钢直尺
US6205673B1 (en) * 1999-02-27 2001-03-27 Otis M. Larsen Fractional-decimal vernier

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108731646A (zh) * 2017-04-14 2018-11-02 北京市水利规划设计研究院 水平位移观测标尺、测量结构、水闸观测系统及观测方法
CN108731646B (zh) * 2017-04-14 2024-02-13 北京市水利规划设计研究院 水平位移观测标尺、测量结构、水闸观测系统及观测方法
RU175579U1 (ru) * 2017-06-14 2017-12-11 Акционерное Общество Кировский Завод "Красный Инструментальщик" Штангенциркуль разметочный
CN107806808A (zh) * 2017-12-07 2018-03-16 中建八局第四建设有限公司 一种钢筋间距调准器
CN108344339A (zh) * 2018-02-06 2018-07-31 海宁安捷复合材料有限责任公司 一种碳纤维游标卡尺
CN109307462A (zh) * 2018-07-24 2019-02-05 安徽皖南电机股份有限公司 磁钢检具
CN109900189A (zh) * 2019-04-22 2019-06-18 中信戴卡股份有限公司 一种轮毂内腔直径测量装置
CN109900189B (zh) * 2019-04-22 2024-02-13 中信戴卡股份有限公司 一种轮毂内腔直径测量装置
CN110186353A (zh) * 2019-07-08 2019-08-30 马鞍山钢铁股份有限公司 火车车轮径向尺寸量具及火车车轮径向尺寸测量方法
CN110186353B (zh) * 2019-07-08 2024-03-05 马鞍山钢铁股份有限公司 火车车轮径向尺寸量具及火车车轮径向尺寸测量方法
CN113530740A (zh) * 2021-06-02 2021-10-22 中国长江电力股份有限公司 水轮发电机组定子定位筋弦距精确测量装置及方法
CN114935293A (zh) * 2022-05-12 2022-08-23 蚌埠凯盛工程技术有限公司 一种斜轴承座的尺寸测量装置及其测量方法

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