CN201867147U - Tooling for detecting large-diameter circular parts - Google Patents
Tooling for detecting large-diameter circular parts Download PDFInfo
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- CN201867147U CN201867147U CN2010205579018U CN201020557901U CN201867147U CN 201867147 U CN201867147 U CN 201867147U CN 2010205579018 U CN2010205579018 U CN 2010205579018U CN 201020557901 U CN201020557901 U CN 201020557901U CN 201867147 U CN201867147 U CN 201867147U
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Abstract
本实用新型公开了一种大直径圆形零件直径的检测工装,其包括一圆弧形导轨,该圆弧形导轨上沿径向活动装配有两呈辐射状向外延伸的导向轴,两导向轴的轴线延长线均穿过圆弧形导轨的圆心;两个分别于所述两导向轴滑动插套配合的导向套,各导向套上相对的两侧分别对应所测工件的弦长径向延伸固定有两个长度相当的延伸臂,两导向套上的各延伸臂与所述圆弧形导轨处于同一平面,两导向套之间通过相邻的延伸臂通过铰链轴铰接;在铰链轴上铰接有一游标尺座,游标尺座中滑动插套配合有游标主尺,该游标主尺的一端固定在圆弧形导轨上,该游标主尺的轴向延长线穿过所述圆弧形导轨的圆心。本实用新型具有结构简单、使用方便、测量精确高等特点。
The utility model discloses a detection tool for the diameter of a large-diameter circular part, which comprises an arc-shaped guide rail, on which two radially extending guide shafts are movable along the radial direction. The axis extension line of the shaft all passes through the center of the arc-shaped guide rail; two guide sleeves are respectively matched with the sliding sleeves of the two guide shafts, and the opposite sides of each guide sleeve correspond to the radial direction of the chord length of the measured workpiece respectively. There are two extension arms of equal length extended and fixed, and each extension arm on the two guide sleeves is in the same plane as the arc-shaped guide rail, and the two guide sleeves are hinged by the adjacent extension arms through the hinge shaft; on the hinge shaft There is a vernier base hinged, and the sliding sleeve in the vernier base is matched with the main vernier scale. One end of the main vernier scale is fixed on the arc-shaped guide rail, and the axial extension line of the main vernier scale passes through the arc-shaped guide rail. the center of the circle. The utility model has the characteristics of simple structure, convenient use, high measurement accuracy and the like.
Description
技术领域technical field
本实用新型涉及一种用于测量大直径圆形零件直径的工装。 The utility model relates to a tool for measuring the diameter of a large-diameter circular part. the
背景技术Background technique
在大型机械加工制造中,经常会遇到一些大直径零件的直径测量问题,例如在一些大型电气设备上需要用到一种直径达2000mm、误差在0.3mm以内的连接法兰。目前常用的测量方法可分为以下几种: In large-scale mechanical processing and manufacturing, we often encounter the problem of measuring the diameter of some large-diameter parts. For example, some large-scale electrical equipment needs to use a connecting flange with a diameter of 2000mm and an error within 0.3mm. Currently commonly used measurement methods can be divided into the following categories:
①、直接采用大型游标卡尺或千分尺进行测量。采用这种方法,其随着零件直径的增加,游标卡尺或千分尺的体积及重量势必随之增大,给测量带来困难。①. Directly use large vernier calipers or micrometers for measurement. With this method, as the diameter of the part increases, the volume and weight of the vernier caliper or micrometer will inevitably increase, which will bring difficulties to the measurement.
②、通过常用的小型卡尺或千分尺等工具测量相关量来计算圆的直径。由于计算过程中存在换算误差,因此这种方法的测量精度较低,不能达到加工精度的要求。 ②. Calculate the diameter of the circle by measuring relevant quantities with commonly used tools such as small calipers or micrometers. Due to the conversion error in the calculation process, the measurement accuracy of this method is low and cannot meet the requirements of machining accuracy. the
③、采用光电测量仪器测量圆的直径,但这种方法用到的光电测量仪器的造价太高,使得圆直径的测量成本较高,不适于推广。 3. Adopt the photoelectric measuring instrument to measure the diameter of the circle, but the cost of the photoelectric measuring instrument used in this method is too high, so that the measurement cost of the circle diameter is higher, which is not suitable for promotion. the
实用新型内容Utility model content
本实用新型的目的是:提供一种结构简单、使用方便、测量精确的大直径圆形零件直径的检测工装。 The purpose of the utility model is to provide a detection tool for measuring the diameter of large-diameter circular parts with simple structure, convenient use and accurate measurement. the
本实用新型的大直径圆形零件的检测工装的技术方案是:一种大直径圆形零件直径的检测工装,包括: The technical solution of the detection tooling for large-diameter circular parts of the present utility model is: a detection tooling for the diameter of large-diameter circular parts, including:
一圆弧形导轨,该圆弧形导轨上沿径向活动装配有两呈辐射状向外延伸的导向轴,两导向轴的轴线延长线均穿过圆弧形导轨的圆心;An arc-shaped guide rail, the arc-shaped guide rail is equipped with two radially extending guide shafts radially, and the axis extension lines of the two guide shafts pass through the center of the arc-shaped guide rail;
两个分别于所述两导向轴滑动插套配合的导向套,各导向套上相对的两侧分别对应所测工件的弦长径向延伸固定有两个长度相当的延伸臂,各延伸臂的末端分别设置有用于对准被测零件外圆的检测头,两导向套上的各延伸臂与所述圆弧形导轨处于同一平面,两导向套之间相邻的延伸臂上的检测头通过铰链轴铰接;Two guide sleeves that are respectively matched with the two guide shaft sliding sleeves, the opposite sides of each guide sleeve respectively corresponding to the chord length of the workpiece to be measured are radially extended and fixed with two extension arms with equivalent lengths, and the extension arms of each extension arm The ends are respectively equipped with detection heads for aligning the outer circle of the part to be measured. The extension arms on the two guide sleeves are on the same plane as the arc-shaped guide rail, and the detection heads on the extension arms adjacent to the two guide sleeves pass through hinge shaft hinge;
一游标尺,该游标尺包括滑动插套配合的游标尺座和游标主尺,所述的游标尺座与所述铰链轴转动配合,所述的游标主尺的一端固定在所述圆弧形导轨上,另一端轴向延伸穿过所述的游标尺座,所述游标主尺的轴向延长线穿过所述圆弧形导轨的圆心。A vernier ruler, the vernier ruler includes a vernier ruler seat and a vernier main ruler fitted with a sliding socket, the vernier ruler seat is rotatably engaged with the hinge shaft, and one end of the vernier master ruler is fixed on the arc On the guide rail, the other end axially extends through the vernier base, and the axial extension line of the vernier main scale passes through the center of the arc-shaped guide rail.
在所述的游标尺座朝向圆弧形导轨一端的端面上轴向开设有盲孔,该盲孔的轴线与所述游标主尺同向,盲孔中设置有一螺套,该螺套通过其外周面上径向凸设的导销及游标尺座上对应开设的长孔与游标尺座定位滑动配合,在所述的螺套中旋装有一调整丝杆,该调整丝杆的另一端轴向延伸并与所述的圆弧形导轨螺纹连接。 A blind hole is axially opened on the end face of the vernier base facing one end of the arc-shaped guide rail. The axis of the blind hole is in the same direction as the main vernier scale. The radially protruding guide pin on the outer peripheral surface and the corresponding long hole on the vernier base are positioned and slidably matched with the vernier base. An adjustment screw is screwed in the screw sleeve, and the other end of the adjustment screw is a shaft. extending to and threadedly connected with the arc-shaped guide rail. the
在其中的一个导向套靠近铰链轴的延伸臂上朝向圆弧形导轨方向凸设有连接臂,连接臂的末端铰接有一连杆,该连杆的一端与所述的导销连接,连杆的另一端铰接有一调整手柄,该调整手柄的中部铰接在该导向套上。 On the extension arm of one of the guide sleeves close to the hinge shaft, a connecting arm protrudes towards the direction of the arc-shaped guide rail. A connecting rod is hinged at the end of the connecting arm. The other end is hinged with an adjustment handle, and the middle part of the adjustment handle is hinged on the guide sleeve. the
在所述的连接臂上设有与所述连杆配合用于调整手柄复位趋势的扭簧。 A torsion spring cooperating with the connecting rod for adjusting the return tendency of the handle is provided on the connecting arm. the
所述的圆弧形导轨的两端分别沿径向开设有通槽,所述的各导向轴的一端分别设有与对应通槽滑动配合的导向片,各导向片上分别转动装配有与圆弧形导轨内外周面滚动配合的滚轮机构。 The two ends of the arc-shaped guide rail are respectively provided with through grooves in the radial direction, and one end of each of the guide shafts is respectively provided with a guide piece that slides and fits with the corresponding through groove, and each guide piece is respectively rotatably equipped with a circular arc Roller mechanism with rolling fit on the inner and outer peripheral surfaces of the shaped guide rail. the
所述的滚轮机构由与所述圆弧形导轨外周面滚动配合的两个滚轮和与圆弧形导轨内周面滚动配合的一个滚轮组成,所述与圆弧形导轨内周面滚动配合的一个滚轮位于所述导向轴的轴向延长线上,所述与圆弧形导轨外周面滚动配合的两个滚轮对称设置于所述导向轴轴向延长线的两侧,在所述的三个滚轮的外围套装有环形弹簧。 The roller mechanism is composed of two rollers rolling with the outer peripheral surface of the arc-shaped guide rail and one roller rolling with the inner peripheral surface of the arc-shaped guide rail. One roller is located on the axial extension line of the guide shaft, and the two rollers rolling with the outer peripheral surface of the arc-shaped guide rail are symmetrically arranged on both sides of the axial extension line of the guide shaft. The outer periphery of roller is sheathed with annular spring. the
在所述的两导向套上分别固定有把手。 Handles are respectively fixed on the two guide sleeves. the
本实用新型的检测工装具有体积小、结构简单、使用方便、制造成本较低等特点,而且其充分利用了三点定圆弧的原理将两个相互铰接的导向套的三个点对应所测工件的外圆,即可通过游标尺轻松的测量出两导向套之间铰链轴至圆弧形导轨之间的距离,通过计算铰链轴至圆弧形导轨的距离与圆弧形导轨的半径即可得到所测工件的直径,其间不存在换算误差,因而测量非常精确,完全可以取代现有的测量工具,适于广泛的在大型机械加工制造业中推广。 The detection tooling of the utility model has the characteristics of small size, simple structure, convenient use, and low manufacturing cost, and it makes full use of the principle of three-point fixed arc to correspond the three points of two mutually hinged guide sleeves to the measured The outer circle of the workpiece can easily measure the distance between the hinge axis and the arc-shaped guide rail between the two guide sleeves through the vernier. By calculating the distance from the hinge axis to the arc-shaped guide rail and the radius of the arc-shaped guide rail is The diameter of the measured workpiece can be obtained, and there is no conversion error, so the measurement is very accurate, can completely replace the existing measuring tools, and is suitable for wide promotion in large-scale machining and manufacturing industries. the
附图说明Description of drawings
图1为本实用新型大直径圆形零件直径的检测工装的结构示意图; Fig. 1 is the structural representation of the detection frock of large-diameter circular part diameter of the present utility model;
图2为图1的侧视图;Fig. 2 is the side view of Fig. 1;
图3为图1的后视图;Fig. 3 is the back view of Fig. 1;
图4为图3中的A-A剖视图。Fig. 4 is a cross-sectional view of A-A in Fig. 3 .
具体实施方式Detailed ways
如图1至图4所示,本实用新型的大直径圆形零件直径的检测工装包括:一已知直径的圆弧形导轨2,在圆弧形导轨2上沿径向活动装配有两呈辐射状向外延伸的导向轴5,两导向轴5的轴向延长线均通过圆弧形导轨2的圆心,其中,该圆弧形导轨2的两端的端面上分别沿径向开设有贯穿其内外周面的通槽,两导向轴5分别与两通槽对应配合,两导向轴5的端部分别固定有用于插入对应通槽中的导向片,在各导向轴5端部的导向片上分别设置有由三个滚轮组成的滚轮机构4,其中各导向片上的其中一个滚轮与圆弧形导轨2的内周面滚动配合,该滚轮位于对应导向轴5的轴向延长线上,另两个滚轮与圆弧形导轨2的外周面滚动配合,该两滚轮对称分设于导向轴5轴向延长线的两侧,这三个滚轮被一个同时套装在其外围的圆形的弹簧约束,使各滚轮保持与圆弧形导轨2的紧密接触,以保证三个滚轮始终与圆弧形导轨2的内外周面配合,通过这三个滚轮定位可以保证导向轴在圆弧形导轨2上移动时,其轴向延长线始终穿过圆弧形导轨2的圆心。 As shown in Figures 1 to 4, the detection tooling for the diameter of large-diameter circular parts of the present invention includes: an arc-
两导向轴5上分别滑动套装有导向套6,两导向套6的外周面上相对的两侧分别沿径向延伸设置有对应所测工件外圆弦长设置的两个长度相当的延伸臂,在各延伸臂的末端分别设置有用于对准被测零件外圆的检测头7,两导向套6之间相邻的两延伸臂的检测头7通过铰链轴铰接,使得两导向套6上的各延伸臂与圆弧形导轨2处于同一平面内。在铰链轴上和铰接有一游标尺座10,在该游标尺座10中滑动穿套设置有游标主尺8,该游标主尺8的一端固定在圆弧形导轨2的中心,从而使游标主尺8的轴线穿过圆弧形导轨2的圆心。圆弧形导轨2、导向轴5、导向套6及游标尺座10和游标主尺8共同组成本实用新型大直径圆形零件直径的检测工装的基本框架结构。 The two guide shafts 5 are respectively slidingly fitted with
为了便于在测量中进行微调以保证测量精度的要求,在游标尺座10朝向圆弧形导轨2一端的端面上轴向开设有盲孔,该盲孔的轴线与游标主尺8同向,盲孔中设置有一螺套9,该螺套9通过其外周面上径向凸设的导销及游标尺座10上对应开设的长孔与游标尺座10定位滑动配合,在该螺套10中旋装有一调整丝杆1,该调整丝杆1的另一端轴向延伸并与圆弧形导轨2螺纹连接。 In order to facilitate fine-tuning in the measurement to ensure the measurement accuracy, a blind hole is axially opened on the end face of the
为了更加便于操作,在其中的一个导向套6靠近铰链轴的延伸臂上朝向圆弧形导轨2方向凸设有连接臂,连接臂的末端铰接有一连杆11,该连杆11的一端与螺套9上的导销连接,连杆11的另一端铰接有一调整手柄13,该调整手柄13的中部铰接在该导向套6上,在连接臂上还设有与连杆11配合用于调整手柄处于复位趋势的扭簧。在两导向套6上还分别固定有一个使用时手握的把手。 In order to be more convenient for operation, on the extension arm of one of the
下面对该检测工装的使用进行说明:首先,由于其中两导向套6铰接,因此两导向套之间仅具有两位于外侧的延伸臂端部的端点和两内侧延伸臂的铰接点三个点,将两位于外侧的延伸臂端部的检测头7分别定义为A点和B点,两内侧延伸臂的铰接的检测头7定义为O点,从而可以利用三定定圆的原理确定一个圆。然后将游标尺对零,先将该检测工装调整到最小测量位置附近,此时A O B三个点确定的圆作为基准圆并测得它数值,数值最好为整数,以便于计算,把这一数值刻在圆弧导轨上。 The use of this detection tool is described below: First, because the two
在测量时,先旋转调整丝杆1,使两导向套6上的A O B三点所确定的圆的尺寸略大于被测零件尺寸,用两手把持把手将该检测工装上导向套6的A O B三个点靠近被测零件表面,两导向套上的A、B两点与被测零件的外圆周接触,O点不接触,此时A O B三个点所确定圆的圆心和被测零件的圆心是不重合的。用手扳动调整手柄13,调整手柄13绕其铰接点转动,使调整手柄13靠近游标尺的一端向圆弧形导轨2方向移动并带动连杆11转动,连杆11绕其铰接点转动带动导销向远离圆弧形导轨2的方向移动,导销同时带动螺套9移动,螺套9通过调整丝杆1拉动圆弧形导轨2同向移动,圆弧形导轨2的移动有打破A O B三个点确定的圆的圆心与圆弧形导轨2的圆心重合的趋势,为了保持A O B三个点确定的圆与圆弧形导轨2确定的圆的圆心必须重合的条件,O点也势必与圆弧形导轨2同向移动,从而靠近被测零件的外周面,并最终与该零件外周面接触,达到被测零件、A O B三个点确定的圆及圆弧形导轨2三个圆心重合。这时根据游标尺的读数计算就可以得到被测零件的直径。 When measuring, first rotate and adjust the screw rod 1 so that the size of the circle determined by the three points A O B on the two
在具体的应用时,由于被测零件的尺寸有时很大,这样势必要延长两导向轴的长度,从而会造成该检测工装的体积加大而非常笨重,使用会很不方便,因此每一套检测工装可以多准备几个处于不同直径范围的圆弧形导轨,使用时,根据被测零件尺寸选择在此范围的圆弧形导轨。 In specific applications, because the size of the parts to be tested is sometimes very large, it is necessary to extend the length of the two guide shafts, which will cause the size of the detection tool to increase and be very heavy, and it will be very inconvenient to use. Therefore, each set The inspection tooling can prepare several arc-shaped guide rails in different diameter ranges. When using it, select the arc-shaped guide rails in this range according to the size of the parts to be tested. the
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CN102589396A (en) * | 2012-03-21 | 2012-07-18 | 中铁隆昌铁路器材有限公司 | Three-point identifying arc measuring instrument and measuring method |
CN102589396B (en) * | 2012-03-21 | 2014-02-26 | 中铁隆昌铁路器材有限公司 | Three-point identifying arc measuring instrument and measuring method |
CN103727861A (en) * | 2012-10-10 | 2014-04-16 | 张瑞强 | Circular arc radius measuring ruler |
CN103162592A (en) * | 2013-03-06 | 2013-06-19 | 中国航空工业集团公司沈阳发动机设计研究所 | Plug-type axially symmetric spray pipe outlet diameter measuring tool |
CN103162592B (en) * | 2013-03-06 | 2015-09-09 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of plug axisymmetric nozzle outlet diameter measuring tool |
CN113551581A (en) * | 2021-07-16 | 2021-10-26 | 钱源 | Direct-reading type electric power large-caliber pipeline inner diameter measuring device |
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