WO1999013288A1 - Internal measuring head with three probes - Google Patents

Internal measuring head with three probes Download PDF

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Publication number
WO1999013288A1
WO1999013288A1 PCT/CN1998/000170 CN9800170W WO9913288A1 WO 1999013288 A1 WO1999013288 A1 WO 1999013288A1 CN 9800170 W CN9800170 W CN 9800170W WO 9913288 A1 WO9913288 A1 WO 9913288A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixed
micrometer
measuring
screw
sleeve
Prior art date
Application number
PCT/CN1998/000170
Other languages
German (de)
French (fr)
Chinese (zh)
Inventor
Xiaobin Huang
Ronghua Wang
Kenan Ren
Shibin Ma
Original Assignee
Qinghai Measuring And Cutting Tools Plant
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
Priority to CN97247992.9 priority Critical
Priority to CN97247992U priority patent/CN2314341Y/en
Application filed by Qinghai Measuring And Cutting Tools Plant filed Critical Qinghai Measuring And Cutting Tools Plant
Publication of WO1999013288A1 publication Critical patent/WO1999013288A1/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/08Measuring arrangements characterised by the use of mechanical means for measuring diameters
    • G01B5/12Measuring arrangements characterised by the use of mechanical means for measuring diameters internal diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
    • G01B3/18Micrometers

Abstract

The present invention relates to an internal measuring head with three measuring probes. The head comprises a transmission sleeve mounted in a axial bore and three slide thread sleeves mounted in three radial bores respectively and symmetrically. A driving gear is fixed on the transmission sleeve and three driven gears which engaged perpendicularly with the driving gear are fixed on three thread rods. The angle between the axis of driving and driven gears is 90°. When the three thread rods are driven to rotate by the driven gears, the slide sleeves are moved along the radial bores, so that the probes mounted on the slide sleeves contact synchronously with a workpiece to be measured.

Description

齿轮螺旋式三爪内径测量头  Gear screw type three jaw inner diameter measuring head
背景技术 Background technique
本发明属于计量器具, 尤其涉及三爪内径测量头。  The invention belongs to a measuring instrument, and particularly relates to a three-jaw inner diameter measuring head.
现有的三爪内径千分尺的测量头有两种结构, 一种是旋转并轴向移动的宝塔螺 丝推动测量爪移动接触被测工件, 弹簧使测量爪缩回并和定塔螺丝始终保持接触; 另 一种是旋转并轴向移动的测微螺杆推动前端的圆锥体,锥体再推动测量爪移动接触被 测工件, 弹簧使测量爪缩回并与锥体始终保持接触。上述两种结构的缺点是加工难度 大, 测量范围小, 通常只有 10毫米的测量范围, 如要加大测量范围需增加宝塔螺丝 或圆锥体的外径尺寸和长度尺寸, 这样宝塔螺丝或圆锥体将伸出主体过长, 不易测量 盲孔和带止口的孔径尺寸, 测量爪移动距离太大时, 弹簧的压力变化也很大, 从而造 成测力变化大, 影响测量精度。  The existing three-jaw micrometer micrometer measuring head has two structures. One is a pagoda screw that rotates and moves axially to push the measuring jaw to contact the measured workpiece. The spring retracts the measuring jaw and keeps contact with the fixed tower screw at all times. The other is a rotating and axially moving micrometer screw that pushes the cone at the front end, and the cone pushes the measuring claw to move to contact the measured workpiece. The spring retracts the measuring claw and keeps contact with the cone at all times. The disadvantages of the above two structures are that the processing is difficult and the measurement range is small. Usually, the measurement range is only 10 mm. To increase the measurement range, the outer diameter and length of the pagoda screw or cone must be increased. The protruding body is too long, and it is difficult to measure the size of the blind hole and the aperture with a stop. When the measuring claw moves too far, the pressure of the spring changes greatly, which causes a large change in the measurement force and affects the measurement accuracy.
发明目的 Object of the invention
本发明的目的就是克服上述已有三爪内径千分尺的缺点, 提供一种结构简单, 易于加工制造, 且测量范围大, 便于使用的三爪内径测量头。  The purpose of the present invention is to overcome the shortcomings of the existing three-jaw inner diameter micrometer, and provide a three-jaw inner diameter measuring head which has a simple structure, is easy to manufacture, has a large measurement range, and is easy to use.
发明简述 Brief description of the invention
本发明的目的是这样实现的: 传动套和螺纹滑套分别安装在测量头主体的轴向 孔和径向孔内, 主动齿轮固定在传动套上, 被动齿轮固定在测微螺杆上, 主动齿轮的 轴线与被动齿轮的轴线交角为 90度。 转动传动套时, 主动齿轮和被动齿轮啮合并实 现垂直变向传动, 此时, 测微螺杆在齿轮的带动下转动, 同时与测微螺杆旋合的螺纹 滑套沿主体径向孔移动, 使螺纹滑套上的测量爪接触被测零件孔壁, 圆柱销的作用是 防止螺紋滑套转动。固定在端盖上的起挡块作用的圆锥头螺钉可防止测微螺杆脱出并 使测微螺杆的内端面与固定在端盖中的球面支承接触。 三个测量爪在圆周上均匀分 布, 其结构原理完全相同并且动作是同步的。  The purpose of the present invention is achieved as follows: the driving sleeve and the threaded sliding sleeve are respectively installed in the axial hole and the radial hole of the measuring head body, the driving gear is fixed on the driving sleeve, the passive gear is fixed on the micrometer screw, and the driving gear The angle between the axis of the axis and the axis of the passive gear is 90 degrees. When the transmission sleeve is rotated, the driving gear and the passive gear mesh with each other to realize vertical reversing transmission. At this time, the micrometer screw rotates under the driving of the gear, and the threaded sliding sleeve screwed with the micrometer screw moves along the radial hole of the main body, so that The measuring claw on the threaded sliding sleeve contacts the wall of the hole of the tested part, and the role of the cylindrical pin is to prevent the threaded sliding sleeve from rotating. The cone-head screw, which acts as a stopper, is fixed on the end cap to prevent the micrometer screw from coming out and to bring the inner end surface of the micrometer screw into contact with the spherical support fixed in the end cap. The three measuring jaws are evenly distributed on the circumference, their structural principles are identical and their movements are synchronized.
本发明结构紧凑, 便于加工制造, 测量范围大, 最大可超过 100毫米, 主要适 用于孔的精密测量, 尤其适合测量盲孔和带止口的孔径尺寸。本发明适用于机械三爪 内径千分尺, 电子数显三爪内径千分尺等量具。  The invention has a compact structure, is convenient for processing and manufacturing, and has a large measurement range, which can exceed 100 millimeters. It is mainly suitable for precise measurement of holes, and is particularly suitable for measuring blind hole and aperture size with stop. The invention is suitable for measuring tools such as a mechanical three-jaw internal diameter micrometer and an electronic digital display three-jaw internal micrometer.
附图说明 BRIEF DESCRIPTION OF THE DRAWINGS
图 1为本发明的主视图。  FIG. 1 is a front view of the present invention.
图 2为本发明的侧视图。  Figure 2 is a side view of the present invention.
图 3为本发明的实施例 1的结构示意图。 图 4为本发明的实施例 1的结构示意图。 FIG. 3 is a schematic structural diagram of Embodiment 1 of the present invention. FIG. 4 is a schematic structural diagram of Embodiment 1 of the present invention.
实施例的详细描述 Detailed description of the examples
以下结合附图给出的实施例对本发明作进一步详细描述:  The present invention is described in further detail below with reference to the embodiments given in the drawings:
实施例 1  Example 1
图 3是采用本发明的电子数显三爪内径千分尺, 使用该三爪内径千分尺时, 转 动测力装置 ( 17 ) , 在测力的作用下, 动栅轴 ( 12 ) 随之转动, 动栅座 ( 15 ) 固 定在动栅轴 ( 12 ) 上, 动栅 ( 14 ) 固定在动栅座 ( 15 ) 上, 动栅 ( 14 ) 、 动栅座 ( 15 ) 与动栅轴 ( 12 ) 同步转动, 定栅 ( 13 ) 固定在主体 ( 1 1 ) 上不动, 动栅 ( 14 ) 和定栅 ( 13 ) 为容栅传感器, 通过相对转动产生电信号, 动栅轴 ( 12 ) 前 端插在传动套 ( 8 ) 尾部的槽 ( 10 ) 中, 使其一起转动。 传动套 ( 8 ) 和螺纹滑套 ( 3 )分别安装在测量头主体 ( 9 ) 的轴向孔和径向孔内, 主动齿轮 ( 7 ) 固定在传 动套 ( 8 ) 上, 被动齿轮 ( 6 ) 固定在测微螺杆 ( 4 ) 上, 主动齿轮 ( 7 ) 的轴线与 被动齿轮 ( 6 ) 的轴线交角为 90度。 转动传动套 ( 8 ) 时, 主动齿轮 ( 7 ) 和被动 齿轮 ( 6 ) 啮合并实现垂直变向传动, 此时, 测微螺杆 ( 4 ) 在齿轮的带动下转动, 同时与测微螺杆 ( 4 ) 旋合的螺纹滑套 ( 3 ) 沿主体径向孔移动, 使螺纹滑套 ( 3 ) 上的测量爪接触被测零件孔壁, 圆柱销 ( 1 ) 的作用是防止螺紋滑套 ( 3 )转动。 固 定在端盖上的圆锥头螺钉 ( 2 )可防止测微螺杆 ( 4 )脱出并使测微螺杆 ( 4 )的内 端面与固定在端盖中的钢球 ( 5 )接触。三个测量爪在圆周上均匀分布, 其结构原理 完全相同并且动作是同步的。 由数显组件 ( 16 ) 将电信号转换成数字信号并显示出 被测的孔径尺寸。  Fig. 3 is a three-jaw micrometer with an electronic digital display of the present invention. When using the three-jaw micrometer with an internal micrometer, the force-measuring device (17) is rotated, and under the action of the force, the moving grid shaft (12) rotates with the moving grid. The base (15) is fixed on the movable grid shaft (12), and the movable grid (14) is fixed on the movable grid base (15), and the movable grid (14), the movable grid base (15) and the movable grid shaft (12) rotate synchronously. The fixed grid (13) is fixed on the main body (1 1), the moving grid (14) and the fixed grid (13) are capacity grid sensors, and an electrical signal is generated through relative rotation. The front end of the moving grid shaft (12) is inserted in the transmission. Put it in the groove (10) at the end of the sleeve (8) to make it rotate together. The driving sleeve (8) and the threaded sliding sleeve (3) are respectively installed in the axial hole and the radial hole of the measuring head body (9), the driving gear (7) is fixed on the driving sleeve (8), and the driven gear (6) It is fixed on the micrometer screw (4), and the intersection angle of the axis of the driving gear (7) and the axis of the passive gear (6) is 90 degrees. When the transmission sleeve (8) is rotated, the driving gear (7) and the driven gear (6) mesh with each other to realize vertical reversing transmission. At this time, the micrometer screw (4) is driven by the gear and rotates with the micrometer screw (4). ) The threaded threaded sliding sleeve (3) moves along the radial hole of the main body, so that the measuring claw on the threaded sliding sleeve (3) contacts the wall of the hole of the part under test, and the role of the cylindrical pin (1) is to prevent the threaded sliding sleeve (3) Turn. The cap screws (2) fixed on the end cover can prevent the micrometer screw (4) from coming out and make the inner end surface of the micrometer screw (4) contact the steel ball (5) fixed in the end cover. The three measuring jaws are evenly distributed on the circumference, their structural principles are identical and their movements are synchronized. The digital display component (16) converts the electrical signal into a digital signal and displays the measured aperture size.
实施例 2  Example 2
图 4 是采用本发明的机械三爪内径千分尺, 使用该千分尺时, 转动测力装置 ( 21 ) , 在测力的作用下, 螺杆 ( 19 ) 随其转动, 固定在螺杆 ( 19 ) 上的微分筒 ( 20 ) 也同步转动, 此时与螺杆 ( 19 ) 旋合的刻度套筒 ( 18 ) 产生直线位移, 螺 杆 ( 19 )前端插在传动套 ( 8 )尾部的槽 ( 10 ) 中, 转动时带动传动套 ( 8 )—起 转动。 传动套 ( 8 )和螺纹滑套 ( 3 )分别安装在测量头主体 ( 9 ) 的轴向孔和径向 孔内, 主动齿轮 ( 7 )固定在传动套 ( 8 )上, 被动齿轮 ( 6 )固定在测微螺杆 ( 4 ) 上, 主动齿轮 ( 7 ) 的轴线与被动齿轮 ( 6 ) 的轴线交角为 90度。 转动传动套 ( 8 ) 时,主动齿轮 ( 7 )和被动齿轮 ( 6 )啮合并实现垂直变向传动,此时,测微螺杆 ( 4 ) 在齿轮的带动下转动, 同时与测微螺杆 ( 4 )旋合的螺纹滑套 ( 3 )沿主体径向孔移 动, 使螺纹滑套 ( 3 )上的测量爪接触被测零件孔壁, 圆柱销 ( 1 ) 的作用是防止螺 紋滑套 ( 3 )转动。 也可在主体 ( 9 ) 的径向孔内设置起挡块作用的台阶 ( 2') 以防 止测微螺杆 ( 4 )脱出并使测微螺杆 ( 4 ) 的内端面与端盖上的球面 ( 5 )接触。 三 个测量爪在圆周上均匀分布, 其结构原理完全相同并且动作是同步的。 由刻度套筒 ( 18 ) 和微分筒 ( 20 ) 上的刻度读出被测的孔径尺寸。 Fig. 4 is a micrometer with a three-claw inner diameter of the present invention. When the micrometer is used, the force measuring device (21) is rotated. Under the action of the force, the screw (19) rotates with the differential fixed on the screw (19). The barrel (20) also rotates synchronously. At this time, the scale sleeve (18) screwed with the screw (19) is linearly displaced. The front end of the screw (19) is inserted into the groove (10) at the rear of the transmission sleeve (8). Drive the drive sleeve (8) —start to rotate. The driving sleeve (8) and the threaded sliding sleeve (3) are respectively installed in the axial hole and the radial hole of the measuring head body (9), the driving gear (7) is fixed on the driving sleeve (8), and the driven gear (6) It is fixed on the micrometer screw (4), and the intersection angle of the axis of the driving gear (7) and the axis of the passive gear (6) is 90 degrees. When the transmission sleeve (8) is rotated, the driving gear (7) and the passive gear (6) mesh with each other to realize vertical reversing transmission. At this time, the micrometer screw (4) is driven by the gear, and simultaneously rotates with the micrometer screw (4). ) The threaded sliding sleeve (3) is moved along the radial hole of the main body The sliding claw on the threaded sliding sleeve (3) contacts the wall of the hole of the part to be measured, and the role of the cylindrical pin (1) is to prevent the threaded sliding sleeve (3) from rotating. A step (2 ') functioning as a stopper can also be provided in the radial hole of the main body (9) to prevent the micrometer screw (4) from coming out and to make the inner end surface of the micrometer screw (4) and the spherical surface ( 5) Contact. The three measuring jaws are evenly distributed on the circumference, their structural principles are identical and their movements are synchronized. The measured aperture size is read from the scale on the scale sleeve (18) and the differential cylinder (20).

Claims

EMI4.1 EMI4.1
PCT/CN1998/000170 1997-09-08 1998-08-21 Internal measuring head with three probes WO1999013288A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN97247992.9 1997-09-08
CN97247992U CN2314341Y (en) 1997-09-08 1997-09-08 Inside diameter measuring head with gear and spiral three-claw structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29880111U DE29880111U1 (en) 1997-09-08 1998-08-21 Aperture measuring head with three measuring heads driven by toothed wheels

Publications (1)

Publication Number Publication Date
WO1999013288A1 true WO1999013288A1 (en) 1999-03-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN1998/000170 WO1999013288A1 (en) 1997-09-08 1998-08-21 Internal measuring head with three probes

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CN (1) CN2314341Y (en)
DE (1) DE29880111U1 (en)
WO (1) WO1999013288A1 (en)

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CN101551228A (en) 2008-04-03 2009-10-07 鸿富锦精密工业(深圳)有限公司 Inner diameter measuring device and measuring method
TWI393856B (en) * 2008-05-02 2013-04-21 Foxnum Technology Co Ltd Measuring apparatus for aperture
CN102749059B (en) * 2012-07-20 2015-01-28 上海交通大学 Dual-feed type device for measuring roundness and cylindricity
CN103822557B (en) * 2014-03-18 2016-06-15 金陵科技学院 A kind of double; two pellet balance centering type inside dial indicator
CN105043219B (en) * 2015-08-09 2018-06-22 共享装备股份有限公司 Circularity detection device and method
CN109554512B (en) * 2017-09-27 2020-09-25 宝山钢铁股份有限公司 Inner diameter measuring device for tuyere medium sleeve
CN108656243B (en) * 2018-04-25 2020-07-03 嘉兴德基机械设计有限公司 Core lathe tool is got to timber
CN110202440B (en) * 2019-07-08 2021-02-12 烟台是高装备科技有限公司 Tool for machining welding groove of small-diameter pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH84647A (en) * 1919-06-28 1920-08-02 Arnold Kohly Micrometer
US1562923A (en) * 1922-05-15 1925-11-24 James G Sisson Measuring device
US3319342A (en) * 1963-07-08 1967-05-16 Pfister Walter Internal micrometer
FR2496254A1 (en) * 1980-12-15 1982-06-18 Duhoux Richard Micrometer gauge for measuring internal diameters - has interchangeable heads extending range, fitting over conical support on micrometer shaft
SU1381320A1 (en) * 1985-07-30 1988-03-15 Предприятие П/Я Р-6702 Internal micrometer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH84647A (en) * 1919-06-28 1920-08-02 Arnold Kohly Micrometer
US1562923A (en) * 1922-05-15 1925-11-24 James G Sisson Measuring device
US3319342A (en) * 1963-07-08 1967-05-16 Pfister Walter Internal micrometer
FR2496254A1 (en) * 1980-12-15 1982-06-18 Duhoux Richard Micrometer gauge for measuring internal diameters - has interchangeable heads extending range, fitting over conical support on micrometer shaft
SU1381320A1 (en) * 1985-07-30 1988-03-15 Предприятие П/Я Р-6702 Internal micrometer

Also Published As

Publication number Publication date
CN2314341Y (en) 1999-04-14
DE29880111U1 (en) 1999-09-02

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