CN105043208A - Groove width measuring device - Google Patents

Groove width measuring device Download PDF

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Publication number
CN105043208A
CN105043208A CN201510457687.6A CN201510457687A CN105043208A CN 105043208 A CN105043208 A CN 105043208A CN 201510457687 A CN201510457687 A CN 201510457687A CN 105043208 A CN105043208 A CN 105043208A
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China
Prior art keywords
measuring
handle
claw
groove width
measurement
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CN201510457687.6A
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Chinese (zh)
Inventor
张子明
宋松民
贾延磊
王海军
裴韶光
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State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
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State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
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Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd, Henan Pinggao Electric Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510457687.6A priority Critical patent/CN105043208A/en
Publication of CN105043208A publication Critical patent/CN105043208A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a groove width measuring device. The groove width measuring device comprises a measuring handle and a measuring core shaft in guiding movable arrangement in the measuring handle. An elastic component is arranged between the measuring handle and the measuring core shaft. The measuring core shaft is connected with a movable claw extending along the radial direction thereof. The measuring handle is provided with a fixed claw. The fixed claw comprises a connection portion connected with the measuring handle and a measuring portion used cooperatively with the movable claw and extending along the radial direction of the measuring handle. The opposite sides of the measuring portion of the fixed claw and the movable claw are respectively provided with a matching surface in close fit with the corresponding groove wall during measuring. Measurement reference of the measuring device is two groove wall surfaces of an inner ring groove, and the two groove wall surfaces are refined reference surfaces and provide reference to each other. Compared with the prior art, the measuring error is small, and the precision of the measured groove width value is higher.

Description

槽宽测量装置Groove width measuring device

技术领域 technical field

本发明涉及测量工具领域,具体涉及一种槽宽测量装置。 The invention relates to the field of measuring tools, in particular to a groove width measuring device.

背景技术 Background technique

在机械加工领域,有一些零件需要加工内环槽,并且对内环槽的宽度要求精度较高。如图1所示,为现有的一种加工有内环槽的零件的结构示意图,该零件100的内环槽101设置在孔102内。如果零件的孔深较大,采用游标卡尺是不便于对内环槽的宽度进行测量的,甚至是无法对其测量的。 In the field of mechanical processing, some parts need to process the inner ring groove, and the width of the inner ring groove requires high precision. As shown in FIG. 1 , it is a structural diagram of a conventional part processed with an inner ring groove. The inner ring groove 101 of the part 100 is set in a hole 102 . If the hole depth of the part is large, it is inconvenient or even impossible to measure the width of the inner ring groove with a vernier caliper.

对于上述深孔内环槽存在的槽宽测量困难的问题,中国专利CN203349732U(公告日为2013.12.18)公开了深孔内环槽轴向位置及槽宽测量工具,该测量工具包括在测量时伸入深孔内的测量柄,测量柄的一端设有用于安装测量表的安装座。测量柄内设有与其同轴的通孔,通孔内与其滑动配合套装有测量芯轴,测量芯轴上设有轴肩,轴肩与安装座之间设有套装在测量芯轴上的弹簧。安装座上设有测量表,测量表的测量头抵靠在测量芯轴上的端面上。测量柄的外周壁上设有侧壁与其轴线平行的通槽,通槽的槽口位于测量柄远离安装座的端面上,通槽将测量柄分割成测量柄本体和测量爪,测量爪的端部设有径向向外延伸并用于在测量时与内环槽配合的凸缘。 For the problem of the difficulty in measuring the groove width of the inner ring groove in the above-mentioned deep hole, Chinese patent CN203349732U (announcement date is 2013.12.18) discloses a tool for measuring the axial position and groove width of the inner ring groove in the deep hole. A measuring handle that extends into the deep hole, and one end of the measuring handle is provided with a mounting seat for installing a measuring gauge. There is a through hole coaxial with it in the measuring handle, and a measuring mandrel is fitted in the through hole to slide and fit with it. There is a shaft shoulder on the measuring mandrel, and a spring set on the measuring mandrel is arranged between the shoulder and the mounting seat. . A measuring gauge is arranged on the mounting seat, and the measuring head of the measuring gauge leans against the end surface of the measuring mandrel. The outer peripheral wall of the measuring handle is provided with a through groove whose side wall is parallel to its axis. The notch of the through groove is located on the end face of the measuring handle away from the mounting seat. The upper part is provided with a flange extending radially outward and used to cooperate with the inner ring groove during measurement.

上述测量工具的测量过程如下:测量时用手捏住测量爪,以便测量爪能够进入工件深孔内,当测量爪到达工件内环槽时,松开测量爪,让测量爪卡在内环槽内。此时测量芯轴在弹簧的作用下,其远离测量表的一端抵住深孔的孔底。轴向移动测量柄,进而带动测量表相对于测量芯轴移动,测量爪的上下端面与零件的内环槽的上下端面接触得到两个读数,这两个读数的差值作为零件内环槽宽度的测量值。在测量过程中,无论是测量爪的上端面与内环槽的上端面接触还是测量爪的下端面与内环槽的下端面接触,得到的读数均是以深孔底作为基准测得的,而深孔底是一个粗基准,因此,两次测量得到读数均是精度不高的值,再经过计算得到的两个读数的差值由于误差累计使得误差会更大,测量到的槽宽的宽度值精度不高。而且该测量工具受限于其测量原理,导致其不能测量处于通孔内的内环槽宽度,通孔不能为测量芯轴的远离测量表的一端提供挡止面。 The measurement process of the above-mentioned measuring tool is as follows: when measuring, pinch the measuring claw with your hand so that the measuring claw can enter the deep hole of the workpiece. When the measuring claw reaches the inner ring groove of the workpiece, release the measuring claw and let the measuring claw get stuck in the inner ring groove Inside. At this time, the measuring mandrel is under the action of the spring, and its end away from the measuring gauge is against the bottom of the deep hole. Move the measuring handle axially, and then drive the measuring gauge to move relative to the measuring mandrel. The upper and lower end surfaces of the measuring jaws are in contact with the upper and lower end surfaces of the inner ring groove of the part to obtain two readings. The difference between these two readings is taken as the width of the inner ring groove of the part. measured value. During the measurement process, whether the upper end surface of the measuring claw is in contact with the upper end surface of the inner ring groove or the lower end surface of the measuring claw is in contact with the lower end surface of the inner ring groove, the readings obtained are all based on the bottom of the deep hole. The bottom of the deep hole is a rough reference. Therefore, the readings obtained by the two measurements are all values with low accuracy. The value is not accurate. Moreover, the measuring tool is limited by its measuring principle, so that it cannot measure the width of the inner ring groove in the through hole, and the through hole cannot provide a stop surface for the end of the measuring mandrel away from the measuring gauge.

发明内容 Contents of the invention

本发明的目的在于提供一种槽宽测量装置,以解决现有的槽宽测量工具测量误差大的技术问题。 The object of the present invention is to provide a groove width measuring device to solve the technical problem of large measurement errors of existing groove width measuring tools.

为了实现上述目的,本发明槽宽测量装置采用如下技术方案:该槽宽测量装置包括测量柄及导向移动装配在所述测量柄上的测量芯轴,所述测量柄与所述测量芯轴之间设有弹性件,所述测量芯轴上连接有沿其径向延伸的活动爪,所述测量柄上设有固定爪,所述固定爪包括与所述测量柄连接的连接部及与所述活动爪配合使用的、沿测量柄径向延伸的测量部,所述固定爪的测量部与所述活动爪的相背的一侧均具有在测量时与相应的槽壁贴紧配合的配合面。 In order to achieve the above object, the groove width measuring device of the present invention adopts the following technical scheme: the groove width measuring device includes a measuring handle and a measuring mandrel that guides and moves on the measuring handle, and the distance between the measuring handle and the measuring mandrel is There is an elastic piece between them, the measuring mandrel is connected with a movable claw extending radially, the measuring handle is provided with a fixed claw, and the fixed claw includes a connecting part connected with the measuring handle and a connecting part connected with the measuring handle. The measuring part that is used in conjunction with the movable claw and extends radially along the measuring handle. The measuring part of the fixed claw and the opposite side of the movable claw have a fit that closely fits with the corresponding groove wall during measurement. noodle.

所述测量柄具有沿其轴向贯通的安装孔,所述测量芯轴位于安装孔内,所述测量柄外侧壁上设有限位孔,所述活动爪的远离测量芯轴的一端伸出所述限位孔且活动爪可在限位孔内沿测量柄轴向方向移动,所述活动爪在弹性件的作用下抵靠在所述限位孔的一端。 The measuring handle has a mounting hole penetrating in its axial direction, the measuring mandrel is located in the mounting hole, the outer wall of the measuring handle is provided with a limit hole, and the end of the movable claw far away from the measuring mandrel protrudes from the The limit hole and the movable claw can move along the axial direction of the measuring handle in the limit hole, and the movable claw abuts against one end of the limit hole under the action of the elastic member.

所述活动爪与所述测量芯轴通过紧固件可拆连接,所述测量柄上设有对应的供所述紧固件通过的工艺孔。 The movable jaw is detachably connected to the measuring mandrel by a fastener, and the measuring handle is provided with a corresponding process hole for the fastener to pass through.

所述活动爪和/或测量部的远离所述测量芯轴的一端设有在测量时便于活动爪和/或测量部伸入到待测量的槽内的导向结构。 The end of the movable claw and/or the measuring part away from the measuring mandrel is provided with a guide structure that facilitates the movable claw and/or the measuring part to extend into the groove to be measured during measurement.

所述导向结构由活动爪和/或测量部的端部的斜面形成。 The guide structure is formed by a bevel at the end of the movable jaw and/or the measuring portion.

所述固定爪的连接部呈套筒状,所述固定爪活动套设在所述测量柄上,所述固定爪还具有将所述连接部固定在所述测量柄上的锁止部。 The connecting portion of the fixing claw is in the shape of a sleeve, the fixing claw is movably sleeved on the measuring handle, and the fixing claw also has a locking portion for fixing the connecting portion on the measuring handle.

所述固定爪的连接部上设有对所述活动爪在沿所述测量柄轴向方向移动时让位的让位孔。 The connecting portion of the fixed claw is provided with a relief hole for the movable claw to make way for when the movable claw moves along the axial direction of the measuring handle.

所述测量柄外周上设有用于对所述固定爪止转的止转定位面。 An anti-rotation positioning surface for anti-rotation of the fixed pawl is provided on the outer periphery of the measuring handle.

所述测量柄具有沿其轴向方向延伸的安装孔,所述测量芯轴导向移动装配在所述测量柄的安装孔中。 The measuring handle has a mounting hole extending along its axial direction, and the measuring mandrel is guided to move and fit in the mounting hole of the measuring handle.

所述弹性件为弹簧,所述弹簧位于所述测量柄的远离其用于安装测量表的一端安装孔内,所述弹簧的一端与所述测量芯轴的一端顶压配合。 The elastic member is a spring, and the spring is located in a mounting hole at the end of the measuring handle that is away from the end used to install the measuring gauge. One end of the spring is press-fitted with one end of the measuring mandrel.

本发明的有益效果:本发明槽宽测量装置在使用时,将设有固定爪、活动爪的测量柄的一端伸进工件的孔内,使固定爪测量部及活动爪均伸入到工件的内环槽内。活动爪的具有配合面的一侧在弹性件的作用力下顶紧在内环槽的一个侧壁上,固定爪的具有配合面的一侧顶紧在内环槽的另一侧壁上。采用弹性件可以保证固定爪测量部及活动爪的相应的配合面可以顶紧在内环槽的两个侧壁上,避免了使用人力控制活动爪的相对于固定爪的距离而造成的误差。该测量装置的测量基准是内环槽的两个槽壁面,两个槽壁面均是精基准面,互为基准,相对于现有技术,测量的误差较小,测量得到的槽宽尺寸值精度更高。 Beneficial effects of the present invention: when the groove width measuring device of the present invention is in use, one end of the measuring handle provided with the fixed claw and the movable claw is inserted into the hole of the workpiece, so that both the fixed claw measuring part and the movable claw extend into the hole of the workpiece In the inner ring groove. One side of the movable claw with a matching surface is pressed against one side wall of the inner ring groove under the force of the elastic member, and one side of the fixed claw with a matching surface is pressed against the other side wall of the inner ring groove. The use of elastic parts can ensure that the corresponding mating surfaces of the measuring part of the fixed claw and the movable claw can be tightly pressed against the two side walls of the inner ring groove, avoiding the error caused by manpower control of the distance between the movable claw and the fixed claw. The measurement reference of the measuring device is the two groove wall surfaces of the inner ring groove, and the two groove wall surfaces are precise reference planes, which are mutual references. Compared with the prior art, the measurement error is small, and the measured value of the groove width is accurate. higher.

附图说明 Description of drawings

图1为一种加工有内环槽的零件的结构示意图; Fig. 1 is a structural representation of a part processed with an inner ring groove;

图2是本发明槽宽测量装置的实施例的结构示意图; Fig. 2 is the structural representation of the embodiment of groove width measuring device of the present invention;

图3是图2中的A处的放大图; Fig. 3 is an enlarged view of A place in Fig. 2;

图4是图2中的测量芯轴的主视图; Figure 4 is a front view of the measuring mandrel in Figure 2;

图5是图4的俯视图; Figure 5 is a top view of Figure 4;

图6是图2中的测量柄的结构示意图; Fig. 6 is a schematic structural view of the measuring handle in Fig. 2;

图7是图6的剖视图; Fig. 7 is a sectional view of Fig. 6;

图8是图2中的固定爪的主视图; Fig. 8 is a front view of the fixed claw in Fig. 2;

图9是图8的仰视图; Fig. 9 is the bottom view of Fig. 8;

图10是图8的B-B剖视图; Fig. 10 is a B-B sectional view of Fig. 8;

图11是图2中的活动爪的结构示意图。 Fig. 11 is a schematic structural view of the movable claw in Fig. 2 .

具体实施方式 Detailed ways

本发明一种槽宽测量装置的实施例,如图2-11所示:该测量装置包括沿左右方向延伸的测量柄1及导向移动装配在测量柄1安装孔17内的测量芯轴8,测量柄1的安装孔17为沿左右方向贯通的通孔。测量柄1的右端设有用于安装百分表的安装部11,安装部11设有连通安装孔的安装槽16,安装部的侧壁上设有螺钉孔,百分表10插装在安装槽内并由紧固螺钉12固定。百分表10的测量头13抵靠在测量芯轴8的右端面上。测量柄1上于百分表10的左方套装有手柄9。 An embodiment of a groove width measuring device of the present invention is shown in Figure 2-11: the measuring device includes a measuring handle 1 extending in the left and right direction and a measuring mandrel 8 guided and moved in the mounting hole 17 of the measuring handle 1, The mounting hole 17 of the measuring handle 1 is a through hole penetrating in the left-right direction. The right end of the measuring handle 1 is provided with an installation part 11 for installing the dial indicator. The installation part 11 is provided with an installation groove 16 communicating with the installation hole. The side wall of the installation part is provided with a screw hole, and the dial indicator 10 is inserted into the installation groove. and fixed by fastening screws 12. The measuring head 13 of the dial gauge 10 abuts against the right end face of the measuring mandrel 8 . A handle 9 is set on the left side of the dial gauge 10 on the measuring handle 1 .

测量柄1的远离其用于安装百分表10的一端部外侧壁上设有限位孔14,限位孔14为左右方向的长度大于其沿测量柄1外周方向的长度的长孔。测量芯轴8上连接有活动爪7,活动爪7的远离测量芯轴8的一端沿测量芯轴8的径向方向伸出所述限位孔14且活动爪7可在限位孔14内左右移动。测量芯轴8上设有穿孔81,活动爪7的一端插入穿孔81内,另一端伸出限位孔14。测量芯轴8侧壁上还设有连通穿孔的芯轴销孔82,活动爪7的插入穿孔内的一端上设有与芯轴销孔对应的活动爪销孔72。活动爪7与测量芯轴8通过柱销6可拆连接,测量柄1上设有对应的供柱销通过的工艺孔15。测量柄1的安装孔17内还安装有用于顶压测量芯轴并使活动爪抵靠在限位孔的右端的弹簧5,弹簧5处于测量芯轴8的左方。测量柄1左端封设有螺销4,弹簧5套在螺销4上,弹簧5的左端抵靠在螺销的台阶面上,弹簧5的另一端与测量芯轴8的左端顶压配合。测量芯轴8的左端设有避让孔83,避让孔为盲孔,以避免在测量芯轴向左移动时与螺销4干涉。 A limit hole 14 is provided on the outer wall of the end of the measuring handle 1 away from the dial gauge 10 for installation. The limit hole 14 is a long hole whose length in the left and right direction is greater than its length along the peripheral direction of the measuring handle 1 . The measuring mandrel 8 is connected with a movable claw 7, and the end of the movable claw 7 away from the measuring mandrel 8 extends out of the limiting hole 14 along the radial direction of the measuring mandrel 8 and the movable claw 7 can be in the limiting hole 14 Move left and right. The measuring mandrel 8 is provided with a perforation 81 , one end of the movable claw 7 is inserted into the perforation 81 , and the other end extends out of the limiting hole 14 . The side wall of the measuring mandrel 8 is also provided with a mandrel pin hole 82 communicating with the perforation, and one end of the movable claw 7 inserted into the perforation is provided with a movable claw pin hole 72 corresponding to the mandrel pin hole. The movable jaw 7 is detachably connected to the measuring mandrel 8 through the pin 6, and the measuring handle 1 is provided with a corresponding process hole 15 for the pin to pass through. In the mounting hole 17 of the measuring handle 1 is also installed a spring 5 for pressing the measuring mandrel and making the movable claw lean against the right end of the limit hole. The spring 5 is on the left side of the measuring mandrel 8 . The left end of the measuring handle 1 is sealed with a screw pin 4, the spring 5 is sleeved on the screw pin 4, the left end of the spring 5 leans against the stepped surface of the screw pin, and the other end of the spring 5 is press fit with the left end of the measuring mandrel 8. The left end of the measuring mandrel 8 is provided with an escape hole 83, which is a blind hole to avoid interference with the screw pin 4 when the measuring mandrel moves leftward.

测量柄1上于限位孔14处设有固定爪2,固定爪2包括套筒状的固定爪本体23,固定爪本体23作为与测量柄1连接的连接部。固定爪2具有沿所述测量柄径向延伸的、与所述活动爪配合使用的测量部22,固定爪还具有将其固定在所述测量柄上的锁止部21。锁止部21为沿径向向外延伸的凸台,锁止部上设有贯通至测量柄外周面的螺钉孔25,固定爪2活动套设在测量柄1外周上,测量柄1外周上于螺钉孔处设有一平面18,固定爪2通过紧定螺钉3固定在测量柄上。紧定螺钉3顶紧在测量柄外周的平面上,可以防止固定爪2转动。测量部22为开口朝左的U型槽结构,固定爪本体23上设有对活动爪在沿左右方向移动时让位的让位孔24,让位孔24向左延伸至测量部的U型槽的槽底壁。 The measuring handle 1 is provided with a fixed claw 2 at the limit hole 14 , the fixed claw 2 includes a sleeve-shaped fixed claw body 23 , and the fixed claw body 23 serves as a connecting portion connected with the measuring handle 1 . The fixed claw 2 has a measuring portion 22 extending radially along the measuring handle and used in cooperation with the movable claw, and the fixed claw also has a locking portion 21 for fixing it on the measuring handle. The locking part 21 is a boss extending radially outwards. The locking part is provided with a screw hole 25 penetrating to the outer peripheral surface of the measuring handle. The fixed claw 2 is movably sleeved on the outer circumference of the measuring handle 1. A plane 18 is provided at the screw hole, and the fixed claw 2 is fixed on the measuring handle by the set screw 3 . The set screw 3 is tightened on the plane of the outer circumference of the measuring handle, which can prevent the fixed claw 2 from rotating. The measuring part 22 is a U-shaped groove structure with an opening facing left. The fixed claw body 23 is provided with a relief hole 24 for moving the movable claw in the left and right directions. The bottom wall of the groove.

固定爪2的测量部22与活动爪7的相对的一侧在测量时留有设定的间隙,固定爪的测量部与活动爪的相背的一侧均具有在测量时与对应的槽壁贴紧配合的配合面。活动爪和固定爪的远离所述测量芯轴的一端部均设有在测量时便于活动爪、固定爪伸入到待测量的槽内的导向结构71。导向结构71由对应的活动爪、固定爪的端部的斜面形成。 The measuring portion 22 of the fixed claw 2 and the opposite side of the movable claw 7 leave a set gap during measurement, and the measuring portion of the fixed claw and the opposite side of the movable claw all have groove walls corresponding to the corresponding groove walls during measurement. Snug fit mating surfaces. One end of the movable claw and the fixed claw far away from the measuring mandrel is provided with a guide structure 71 that facilitates the insertion of the movable claw and the fixed claw into the groove to be measured during measurement. The guiding structure 71 is formed by the slopes at the ends of the corresponding movable and fixed claws.

本实施例的槽宽测量装置在使用时,先松动紧定螺钉3,调整固定爪2在测量柄1轴向上的位置,使固定爪测量部与活动爪的相背的两侧之间的距离略大于待测的槽宽尺寸,然后锁紧紧定螺钉3,使固定爪固定。将固定爪2测量部22及活动爪7伸入到校对规的两侧壁之间,转动测量柄1,固定爪、活动爪跟随测量柄一起转动。在校对规侧壁施加给活动爪的作用力下,活动爪7相对于固定爪2在轴向方向上间距会发生变化,活动爪7带动测量芯轴8在左右方向上来回移动,百分表10的指针也会来回摆动,将百分表10指针在最小位置处对零。对零后,将设有固定爪、活动爪的一端伸进工件的孔内,待到活动爪7移动到工件的内环槽处时,稍微施加径向方向的作用力,由于固定爪、活动爪上均设有导向结构71,固定爪的测量部及活动爪比较容易伸进内环槽内。活动爪的具有配合面的一侧在弹簧5的作用力下顶紧在内环槽的一个侧壁上,固定爪2的具有配合面的一侧顶紧在内环槽的另一侧壁上。在正常状态下,活动爪7及测量芯轴8总保持向右运动的趋势,活动爪顶紧在限位孔的右端。转动测量柄,活动爪及固定爪的测量部在内环槽内转动,活动爪7在受到槽壁向左的作用力时,活动爪7会带动测量芯轴8一起向左移动。活动爪7在长孔式的限位孔14内移动。在失去向左的作用力时,在弹簧5的作用下,测量芯轴8向右移动,活动爪7跟随测量芯轴8向右移动。在测量芯轴来回移动的过程中,百分表在测量芯轴的作用下,指针会来回摆动,达到测量的目的。百分表的指针的最小读数就是此工件的内环槽的槽宽实际尺寸。该测量装置的测量基准是内环槽的两个槽壁面,两个槽壁面均是精基准面,互为基准,相对于现有技术,测量的误差较小,测量得到的槽宽尺寸值精度更高。而且本发明的测量装置不局限对盲孔中的内环槽的槽宽测量,还可以测量通孔中的内环槽的槽宽,应用范围更广。 When the groove width measuring device of this embodiment is in use, first loosen the set screw 3, adjust the position of the fixed claw 2 on the axial direction of the measuring handle 1, so that the distance between the fixed claw measuring part and the opposite sides of the movable claw is The distance is slightly larger than the groove width to be measured, and then tighten the set screw 3 to fix the fixed claw. Insert the measuring part 22 of the fixed claw 2 and the movable claw 7 between the two side walls of the calibration gauge, rotate the measuring handle 1, and the fixed claw and the movable claw will rotate together with the measuring handle. Under the force applied to the movable claw by the side wall of the calibration gauge, the distance between the movable claw 7 and the fixed claw 2 in the axial direction will change, and the movable claw 7 drives the measuring mandrel 8 to move back and forth in the left and right directions, and the dial indicator The pointer of 10 will also swing back and forth, and the 10 pointer of the dial indicator will be zeroed at the minimum position. After zero alignment, extend the end of the fixed claw and the movable claw into the hole of the workpiece, and when the movable claw 7 moves to the inner ring groove of the workpiece, apply a little force in the radial direction. The pawls are provided with a guide structure 71, so that the measuring portion of the fixed pawl and the movable pawl are relatively easy to stretch into the inner ring groove. The side of the movable claw with the mating surface is pressed against one side wall of the inner ring groove under the force of the spring 5, and the side of the fixed claw 2 with the mating surface is pressed against the other side wall of the inner ring groove . Under normal conditions, the movable claw 7 and the measuring mandrel 8 always maintain a tendency of moving to the right, and the movable claw is tightly mounted on the right end of the limiting hole. When the measuring handle is rotated, the measuring parts of the movable claw and the fixed claw rotate in the inner ring groove. When the movable claw 7 is subjected to the leftward force of the groove wall, the movable claw 7 will drive the measuring mandrel 8 to move to the left together. The movable pawl 7 moves in the position-limiting hole 14 of the elongated hole type. When losing the active force to the left, under the action of the spring 5, the measuring mandrel 8 moves to the right, and the movable claw 7 moves to the right following the measuring mandrel 8. During the process of the measuring mandrel moving back and forth, the pointer of the dial indicator will swing back and forth under the action of the measuring mandrel to achieve the purpose of measurement. The minimum reading of the pointer of the dial indicator is the actual size of the groove width of the inner ring groove of the workpiece. The measurement reference of the measuring device is the two groove wall surfaces of the inner ring groove, and the two groove wall surfaces are precise reference planes, which are mutual references. Compared with the prior art, the measurement error is small, and the measured value of the groove width is accurate. higher. Moreover, the measuring device of the present invention is not limited to measuring the groove width of the inner ring groove in the blind hole, but can also measure the groove width of the inner ring groove in the through hole, so the application range is wider.

在本实施例中,将测量柄的安装孔设成通孔,在测量柄的左端设置封堵通孔的螺销,便于拆装测量芯轴;在其它实施例中,也可将安装孔设成左端封闭的盲孔,将弹簧放置在安装孔内的左端。 In this embodiment, the mounting hole of the measuring handle is set as a through hole, and a screw pin for blocking the through hole is set at the left end of the measuring handle to facilitate the disassembly and assembly of the measuring mandrel; in other embodiments, the mounting hole can also be set as a through hole. Form a blind hole closed at the left end, and place the spring at the left end in the mounting hole.

在其它实施例中,也可将弹簧设置在测量芯轴上于活动爪的右方,在测量芯轴上设置轴肩,弹簧位于轴肩的右方,在测量芯轴上于弹簧的右方套设一轴套,百分表的测量头穿过轴套抵靠在测量芯轴端面上。弹簧在正常状态处于轴肩与轴套之间,弹簧处于压缩状态,在弹簧的作用下,活动爪顶紧在限位孔的左端,此时,固定爪的测量部位于活动爪的右侧。 In other embodiments, the spring can also be arranged on the measuring mandrel to the right of the movable claw, and a shoulder is set on the measuring mandrel, the spring is located on the right of the shoulder, and on the measuring mandrel to the right of the spring A shaft sleeve is sheathed, and the measuring head of the dial indicator passes through the shaft sleeve and abuts against the end surface of the measuring mandrel. The spring is in the normal state between the shaft shoulder and the bushing, and the spring is in a compressed state. Under the action of the spring, the movable claw is pressed against the left end of the limit hole. At this time, the measuring part of the fixed claw is located on the right side of the movable claw.

在其它实施例中,活动爪与测量芯轴的连接还可通过胶粘,也可将柱销换成螺钉。 In other embodiments, the connection between the movable claw and the measuring mandrel can also be done by gluing, and the pin can also be replaced by a screw.

在本实施例中,弹性件采用螺旋弹簧,在其它实施例中,弹性件可以橡胶弹簧,弹性件也可采用高分子材料制成的弹性体;由于活动爪与固定爪的测量部之间的活动间隙较小,在其它实施例中也可采用弹性垫片;或者采用扭簧。 In this embodiment, the elastic member adopts a coil spring. In other embodiments, the elastic member can be a rubber spring, and the elastic member can also be an elastic body made of a polymer material; The activity gap is small, and in other embodiments, elastic washers can also be used; or a torsion spring can be used.

在本实施例中,固定爪的固定爪本体采用套筒状的结构,固定爪套装在测量柄上,便于固定爪在测量柄上轴向位置的调整,也便于通过螺钉将其位置固定;固定爪本体做成套筒状结构形式,固定爪本体上设置的让位孔需做成U型的,即让位孔的右端是与固定爪本体的右端面贯通的,以保证在轴向安装固定爪时活动爪能够进入到固定爪的让位孔中。在其它实施例中,可以将固定爪的固定爪本体做成弧形的,固定爪本体的半径大小与测量柄适配;如果固定爪能够沿测量柄径向方向安装在测量柄上,那么让位孔的右端可以不与固定爪本体的右端面贯通,但让位孔是长孔,以能满足活动爪在测量柄的轴向方向来回移动。 In this embodiment, the fixed claw body of the fixed claw adopts a sleeve-shaped structure, and the fixed claw is sleeved on the measuring handle, which is convenient for adjusting the axial position of the fixed claw on the measuring handle, and is also convenient for fixing its position by screws; The claw body is made into a sleeve-like structure, and the relief hole set on the fixed claw body needs to be made U-shaped, that is, the right end of the relief hole is connected with the right end face of the fixed claw body, so as to ensure the installation and fixation in the axial direction. The movable claw can enter into the give way hole of the fixed claw when clawing. In other embodiments, the fixed claw body of the fixed claw can be made into an arc shape, and the radius of the fixed claw body is adapted to the measuring handle; if the fixed claw can be installed on the measuring handle along the radial direction of the measuring handle, then let The right end of bit hole can not be through with the right end face of fixed jaw body, but the bit hole is a long hole, to satisfy movable jaw to move back and forth in the axial direction of measuring handle.

在本实施例中,将固定爪做成可移动的,是为了使得本发明的测量装置能够适用不同槽宽的内环槽,根据槽宽的不同,事先调整好固定爪的相对于活动爪的位置;在其它实施例中,如果是针对一种槽宽的内环槽的测量,可以将固定爪做成固定式,在测量柄外周上设置相应的螺钉孔,通过螺钉将固定爪固定在测量柄上,使其位置不可调,不用在测量柄外周上设置平面,固定爪也不能转动;也可以将固定爪焊接固定在测量柄上,以固定其位置;或者采用销钉将固定爪连接在测量柄上,在锁止部上开设对应的销孔,同时在测量柄外周上设置与销孔对应的通孔。 In this embodiment, the purpose of making the fixed claw movable is to enable the measuring device of the present invention to be suitable for inner ring grooves with different groove widths. According to the difference in groove width, the fixed claw is adjusted in advance relative to the movable claw. position; in other embodiments, if it is for the measurement of an inner ring groove with a groove width, the fixed claw can be made into a fixed type, and corresponding screw holes are set on the outer circumference of the measuring handle, and the fixed claw is fixed on the measuring handle by screws. on the handle, so that its position cannot be adjusted, and there is no need to set a plane on the outer circumference of the measuring handle, and the fixed claw cannot rotate; the fixed claw can also be welded and fixed on the measuring handle to fix its position; or the fixed claw can be connected to the measuring handle with a pin On the handle, a corresponding pin hole is provided on the locking part, and a through hole corresponding to the pin hole is provided on the outer circumference of the measuring handle.

在本实施例中,通过在测量柄外周上设置一平面作为止转定位面,防止固定爪相对于测量柄转动;在其它实施例中,该平面也可设置两个;在其它实施例中,为了防止固定爪转动,也可采用键连接的方式,固定爪与测量柄通过键连接实现止转。 In this embodiment, a plane is set on the outer circumference of the measuring handle as the anti-rotation positioning surface to prevent the fixed claw from rotating relative to the measuring handle; in other embodiments, two planes can also be provided; in other embodiments, In order to prevent the fixed claw from rotating, a key connection method can also be used, and the fixed claw and the measuring handle are connected through a key to realize anti-rotation.

在其它实施例中,可只在活动爪或固定爪的测量部上设置导向结构,导向结构也不局限于斜面,导向结构也可由圆锥面形成。 In other embodiments, the guide structure can be provided only on the measuring portion of the movable claw or the fixed claw, and the guide structure is not limited to the slope, and the guide structure can also be formed by a conical surface.

在其它实施例中,对于精度要求更高的内环槽,可以采用千分表作为测量表以替换百分表。 In other embodiments, for the inner ring groove that requires higher precision, a dial gauge can be used as a measuring gauge to replace the dial gauge.

在本实施例中,将测量芯轴装配在测量柄中的安装孔中,使得整个测量装置的体积小,便于插入孔径小的工件中;在其它实施例中,测量柄也可不设置贯通的安装孔,测量柄的外壁上设置导向结构,测量芯轴导向装配在测量柄上的导向结构上,测量芯轴与测量柄平行设置。 In this embodiment, the measuring mandrel is assembled in the installation hole in the measuring handle, so that the volume of the entire measuring device is small, and it is convenient to insert into the workpiece with small aperture; in other embodiments, the measuring handle may not be provided with a through installation A guide structure is arranged on the outer wall of the measuring handle, the measuring mandrel is guided and assembled on the guiding structure on the measuring handle, and the measuring mandrel is arranged parallel to the measuring handle.

Claims (10)

1. groove width measurement mechanism, comprise and measure handle and guiding movement and be assemblied in air plug gauge on described measurement handle, it is characterized in that: between described measurement handle and described air plug gauge, be provided with elastic component, described air plug gauge is connected with the movable claw radially extended, described measurement handle is provided with fixed claw, described fixed claw comprise the connecting portion that is connected with described measurement handle and with described movable claw with the use of, along the measurement section measuring the extension of handle radial direction, the measurement section of described fixed claw all has the mating surface of cell wall snug fit when measuring and corresponding to the opposing side of described movable claw.
2. groove width measurement mechanism according to claim 1, it is characterized in that: described measurement handle has along its axially through mounting hole, described air plug gauge is positioned at mounting hole, described measurement handle lateral wall is provided with spacing hole, one end away from air plug gauge of described movable claw stretches out described spacing hole and movable claw can move along measuring handle axial direction in spacing hole, and described movable claw is resisted against one end of described spacing hole under the effect of elastic component.
3. groove width measurement mechanism according to claim 1, is characterized in that: described movable claw and described air plug gauge are by securing member releasable connection, and described measurement handle is provided with the fabrication hole that the corresponding described securing member of confession passes through.
4. groove width measurement mechanism according to claim 1, is characterized in that: one end away from described air plug gauge of described movable claw and/or measurement section is provided with to be convenient to movable claw and/or measurement section and to extend into guide frame in groove to be measured when measuring.
5. groove width measurement mechanism according to claim 4, is characterized in that: described guide frame is formed by the inclined-plane of the end of movable claw and/or measurement section.
6. groove width measurement mechanism according to claim 1, it is characterized in that: the connecting portion of described fixed claw is sleeve-shaped, described fixed claw is movably set on described measurement handle, and described fixed claw also has the lock part be fixed on by described connecting portion on described measurement handle.
7. groove width measurement mechanism according to claim 6, is characterized in that: the connecting portion of described fixed claw is provided with the resigning hole of stepping down when moving along described measurement handle axial direction to described movable claw.
8. groove width measurement mechanism according to claim 6, is characterized in that: described measurement handle periphery is provided with for the spline locating surface to described fixed claw spline.
9. groove width measurement mechanism according to claim 1, is characterized in that: described measurement handle has the mounting hole extended along its axial direction, and described air plug gauge guiding movement is assemblied in the mounting hole of described measurement handle.
10. groove width measurement mechanism according to claim 9, it is characterized in that: described elastic component is spring, described spring be positioned at described measurement handle away from it for installing and measuring one end mounting hole of table, press fit is pushed up in one end of described spring and one end of described air plug gauge.
CN201510457687.6A 2015-07-30 2015-07-30 Groove width measuring device Pending CN105043208A (en)

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Application publication date: 20151111