CN222144018U - Micro-arc high-precision measuring device for linear guide rail - Google Patents
Micro-arc high-precision measuring device for linear guide rail Download PDFInfo
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- CN222144018U CN222144018U CN202420556613.2U CN202420556613U CN222144018U CN 222144018 U CN222144018 U CN 222144018U CN 202420556613 U CN202420556613 U CN 202420556613U CN 222144018 U CN222144018 U CN 222144018U
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Abstract
本实用新型公开了一种直线导轨微弧高精度测量装置，包括龙门支撑架、千分尺固定块、左仿形块、右仿形块、水平推力弹性件和千分尺，龙门支撑架能够在X方向直线滑动的安装于千分尺固定块上，左仿形块能够在X方向直线滑动的安装于龙门支撑架上，右仿形块与龙门支架固定连接，水平推力弹性件给左仿形块提供朝向右仿形块方向运动的弹性力，左仿形块右侧面上设有与直线导轨样件左侧滚道匹配的仿形凸弧面，右仿形块左侧面上设有与直线导轨样件右侧滚道匹配的仿形凸弧面，千分尺的固定端固定安装于千分尺固定块上，千分尺的测量端与左仿形块止动定位测量左仿形块沿X方向的位移变化量，本实用新型实现了直线导轨高效、高精度、低成本测量。
The utility model discloses a linear guide micro-arc high-precision measuring device, comprising a gantry support frame, a micrometer fixed block, a left profiling block, a right profiling block, a horizontal thrust elastic member and a micrometer. The gantry support frame can be installed on the micrometer fixed block in a linear sliding manner in the X direction, the left profiling block can be installed on the gantry support frame in a linear sliding manner in the X direction, the right profiling block is fixedly connected to the gantry support frame, the horizontal thrust elastic member provides the left profiling block with an elastic force moving in the direction of the right profiling block, a profiling convex arc surface matching the left raceway of the linear guide sample is provided on the right side surface of the left profiling block, a profiling convex arc surface matching the right raceway of the linear guide sample is provided on the left side surface of the right profiling block, the fixed end of the micrometer is fixedly installed on the micrometer fixed block, the measuring end of the micrometer and the left profiling block are stopped and positioned to measure the displacement change amount of the left profiling block along the X direction, and the utility model realizes efficient, high-precision and low-cost measurement of the linear guide.
Description
Technical Field
The utility model relates to the field of guide rail production, in particular to a linear guide rail micro-arc high-precision measuring device.
Background
The ball linear guide rail pair generally comprises a guide rail, a sliding block, balls, a reverser, a retainer, a sealing end cover, a baffle plate and the like, and the rolling of the balls between the sliding block and the guide rail is used for replacing relative contact sliding. When the guide rail and the sliding block do relative motion, the ball rolls along the rollaway nest formed by heat treatment hardening and precise grinding processing on the guide rail, and the ball enters the rollaway nest after entering the reversing hole through the reversing device (reversing device) at the end part of the sliding block, so that the ball rolls repeatedly. The two ends of the reverser are provided with dustproof sealing end covers, so that dust and scraps can be effectively prevented from entering the inside of the sliding block.
The guide rail with the roller path is a main element for determining the guiding precision and the movement performance of the whole guide rail assembly, and is fastened on a machine tool fixing part (such as a lathe bed, a stand column and the like) by screws, wherein the installation bottom surface, the positioning side surface and the roller path are required to be subjected to precise plane forming grinding so as to ensure the precise geometric shape of the roller path and the precise dimensional precision between the roller path and the installation positioning surface.
The clearance between the guide rail, the sliding block and the ball greatly influences the sliding friction force of the sliding block, the long-term running precision and the fatigue life of the guide rail pair, and meanwhile, the contact angle of the ball is determined by the guide rail rollaway of the clamping ball and the roller path of the sliding block, and the contact angle greatly influences various mechanical properties of the linear guide rail pair, such as static rated torque.
In the grinding process of the guide rail, the relative spacing of the roller paths and the size between each roller path and the reference surface have extremely high requirements, and the detection deviation is required to be not more than 0.0015mm.
In the batch grinding production process, the guide rail is processed in a physical state with the length of 4m and the weight of approximately 10kg, and after finishing the grinding processing of the roller path, the related measurement of the roller path surface is required to be carried out under the condition of not damaging products, but the measurement of the roller path surface of the measuring guide rail is limited by the requirements of the length, the weight and the precision of the products, and the guide rail is required to be conveyed to a specific environment measuring chamber for detection.
The guide rail is provided with four roller surfaces, the cross section of each roller surface extends to form a circle, the relative distance and the precision between the four circle centers are the most important characteristic requirements for the quality of guide rail products, the method and the detection device for measuring the relative distance play a key indication role in quality stability of the mass grinding production of the control guide rail, parameter adjustment of evaluation related equipment and replacement of judging consumable materials easy to wear.
The current detection method relies on a universal three-coordinate measuring instrument, points are taken at different positions of the arc surface of the raceway through probes at the head of the measuring instrument, an arc curve is drawn in a curve fitting mode, and then the arc curve is fitted to form a circle and the circle center is obtained. In the process, the placement position of the guide rail is difficult to be exactly placed on the accurate vertical position of the three coordinates because the weight of the guide rail is approximately 10kg, the self weight of the three coordinates is large, the three coordinates cannot move based on stability requirements, probe taking points are difficult to be obtained on the same cross section, and the deviation between the fitted arc curve and the circle center position is caused by inaccurate taking points.
When the probe of the three-coordinate measuring instrument takes a point on an arc, the raceway surface is a small arc on the cross section, the arc is less than one quarter of a full circle, the arc curve and the circle deviation generated by fitting of the universal three-coordinate measuring instrument are large, and the precision and the accuracy of measurement by using the universal three-coordinate measuring instrument are difficult to meet the requirements
The three-dimensional instrument has the environmental temperature requirement, and a special measuring chamber is usually required, and when the measuring requirement exists during production, the guide rail needs to be conveyed to the measuring chamber, and various risks and costs such as personnel, logistics, product number management and control, safety and the like can be generated during the production.
Disclosure of utility model
In order to overcome the defects, the utility model provides the high-precision measuring device for the micro-arc of the linear guide rail, which can be used for efficiently and accurately detecting the micro-arc of the linear guide rail, and effectively reduces the high-precision measuring cost of the micro-arc of the linear guide rail.
The utility model aims to solve the technical problems of the prior art, and adopts the technical scheme that the micro-arc high-precision measuring device for the linear guide rail comprises a gantry supporting frame, a micrometer fixing block, a left copying block, a right copying block, a horizontal thrust elastic piece and a micrometer, wherein the width direction of the linear guide rail to be measured is X direction, the height direction of the linear guide rail to be measured is Z direction, the length direction of the linear guide rail to be measured is Y direction, the gantry supporting frame can be arranged on the micrometer fixing block in a linear sliding manner in the X direction, the left copying block can be arranged on the gantry supporting frame in a linear sliding manner in the X direction, the right copying block is fixedly connected with the gantry supporting frame, the horizontal thrust elastic piece provides the left copying block with elastic force moving towards the right copying block direction, the right side surface of the left copying block is provided with a copying convex arc surface matched with the left rolling channel of the linear guide rail sample piece, the left side surface of the right copying block is provided with a copying convex arc surface matched with the right rolling channel of the linear guide rail sample piece, the fixed end of the micrometer is fixedly arranged on the micrometer fixing block, and the measuring end of the micrometer is in a stop positioning manner, and the left copying block is in the X direction.
As a further improvement of the utility model, the micrometer fixing block is arranged on the left slide seat in a Z-direction linear sliding mode for a set distance, the right profiling block is arranged on the right slide seat in a Z-direction linear sliding mode for a set distance, and the left support elastic piece and the right support elastic piece respectively provide elastic floating maintaining force for the micrometer fixing block and the right profiling block along the Z-direction.
As a further improvement of the utility model, a left side plate extending along the Z direction is fixedly arranged on the left sliding seat, a right side plate extending along the Z direction is fixedly arranged on the right sliding seat, strip holes extending along the Z direction are respectively arranged on the left side plate and the right side plate, connecting pieces are respectively fixedly arranged on the micrometer fixing block and the right profiling block, and the connecting pieces are respectively inserted into the strip holes of the left side plate and the right side plate in a sliding manner along the Z direction along the stop of the X direction.
As a further improvement of the utility model, the lower ends of the left sliding seat and the right sliding seat are respectively and fixedly provided with a left ball plate and a right ball plate, and the left ball plate and the right ball plate are respectively in rolling contact with the measuring platform through a plurality of rolling balls capable of rolling.
As a further improvement of the utility model, a micrometer push plate is also arranged, the micrometer push plate can be arranged on the gantry support frame in a linear sliding way along the X direction, the micrometer push plate is fixedly connected with the left profiling block, and the measuring end of the micrometer is in stop positioning with the micrometer push plate.
As a further improvement of the utility model, the micrometer fixing block is provided with a micrometer fixing rod mounting hole, the micrometer push plate is provided with a micrometer telescopic rod mounting hole, and the micrometer fixing rod and the micrometer telescopic rod can be respectively and detachably fixed and inserted into the micrometer fixing rod mounting hole and the micrometer telescopic rod mounting hole.
As a further improvement of the utility model, a spring pushing block is fixedly arranged on the left profiling block, a left spring slot horizontally extending along the X direction is arranged on the side wall of the micrometer fixing block, a right spring slot horizontally extending along the X direction is arranged on the side wall of the spring pushing block, the horizontal thrust elastic piece is a spring, and two ends of the horizontal thrust elastic piece in the extending direction are respectively fixedly inserted into the left spring slot and the right spring slot.
As a further improvement of the utility model, a precise linear guide rail which linearly extends along the X direction is fixedly arranged on the gantry supporting frame, and the left profiling block is fixedly connected with a sliding block of the precise linear guide rail.
A high-precision measuring method for a micro-arc of a linear guide rail comprises the following steps:
The method comprises the steps of firstly, horizontally placing a selected standard linear guide rail on a measuring platform, enabling a gantry support frame of a linear guide rail micro-arc high-precision measuring device to cross two sides of the standard linear guide rail in the width direction, and enabling a left profiling block and a right profiling block to be respectively positioned at two sides of the standard linear guide rail in the width direction;
Loosening the horizontal thrust elastic piece, pushing the left profiling block to elastically slide rightwards under the elastic force of the horizontal thrust elastic piece, further enabling the profiling convex cambered surface on the left direction block to be attached to the upper and lower raceway cambered surfaces on the left side of the standard linear guide rail, and simultaneously pulling the gantry support frame and the right profiling block on the gantry support frame to slide leftwards, wherein the profiling convex cambered surface on the right profiling block is attached to the upper and lower raceway cambered surfaces on the right side of the standard linear guide rail;
Zeroing the micrometer on the micro-arc high-precision measuring device of the linear guide rail;
horizontally placing the linear guide rail sample on a measuring platform, taking down the linear guide rail micro-arc high-precision measuring device from the standard linear guide rail, and enabling a gantry supporting frame of the linear guide rail micro-arc high-precision measuring device to cross the two sides of the linear guide rail sample in the width direction, wherein a left profiling block and a right profiling block are respectively positioned on the two sides of the linear guide rail sample in the width direction;
Loosening the horizontal thrust elastic piece, pushing the left profiling block to elastically slide rightwards under the elastic force of the horizontal thrust elastic piece, enabling the profiling convex cambered surface on the left direction block to be attached to the upper and lower raceway cambered surfaces on the left side of the linear guide rail sample piece, and simultaneously pulling the gantry support frame and the right profiling block on the gantry support frame to slide leftwards, wherein the profiling convex cambered surface on the right profiling block is attached to the upper and lower raceway cambered surfaces on the right side of the linear guide rail sample piece;
step six, recording the reading of a micrometer on the micro-arc high-precision measuring device of the linear guide rail;
And seventhly, carrying out superposition calculation on the standard raceway spacing values on the left side and the right side of the standard linear guide rail and the numerical values read by the micrometer to obtain a comprehensive numerical value, wherein the comprehensive numerical value is the actual raceway spacing value on the left side and the right side of the linear guide rail sample.
As a further improvement of the utility model, in the second step and the fifth step, the gantry supporting frame is slightly pressed downwards for a plurality of times, so that the left supporting elastic piece and the right supporting elastic piece overcome the dead weight of the upper half part of the linear guide rail micro-arc high-precision measuring device, and the left profiling block and the right profiling block are self-adaptively adjusted to be tightly attached to the four raceway arc surfaces on the standard linear guide rail or the linear guide rail sample.
The three-coordinate measuring instrument has the beneficial effects that the three-coordinate measuring instrument utilizes the segmentation principle in the TRIZ innovation theory to segment two functions of the point taking and the fitting data of the three-coordinate measuring instrument, and the measuring process is split into two separate steps. Firstly, measuring the distance between the roller paths on the left side and the right side of a standard precisely machined linear guide rail by using a linear guide rail micro-arc high-precision measuring device, zeroing a micrometer, replacing an electronic program for calculating a zeroing reference after taking a point by using a three-coordinate measuring instrument, detecting a linear guide rail sample by using the linear guide rail micro-arc high-precision measuring device, and fitting the roller path surface circular arcs of the linear guide rail sample by using the precisely machined standard circular arcs on a left profiling block and a right profiling block on the linear guide rail micro-arc high-precision measuring device in a simulated manner to replace a mode of taking a point by using a probe of the three-coordinate measuring instrument and fitting a curve. Meanwhile, the weight limitation of the base and the like of the three-coordinate measuring instrument is avoided by utilizing the disassembling principle, and the carrying contradiction caused by weight is effectively solved. The utility model effectively solves the fundamental problems that the linear guide rail sample is not in place and the measurement surface is insufficient by a quarter of an arc, so that effective point taking and accurate measurement cannot be performed, long-term stable size monitoring can be provided for production, after the linear guide rail sample is measured by adopting the utility model, the equal measurement time of adjusting the point taking and fitting curves for each measurement is reduced from 30 minutes to 5 minutes, and under the premise of the same measurement precision, the measurement cost of the utility model is far lower than that of a three-coordinate measuring instrument, and when the linear guide rail sample is detected by adopting the utility model, the utility model can be completed by only 1 person, the technology of measuring personnel is not required, and the measurement labor cost is reduced. The utility model realizes the high-efficiency, high-precision and low-cost measurement of the linear guide rail, has no requirement on the measuring environment, can perform online measurement in a workshop, and improves the detection convenience of the linear guide rail.
Drawings
FIG. 1 is a perspective view of a linear guide micro-arc high-precision measuring device of the utility model;
FIG. 2 is a front view of a linear guide micro-arc high precision measuring device of the present utility model;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a top view of the linear guide micro-arc high-precision measuring device of the utility model;
fig. 5 is a left side view of the linear guide micro-arc high-precision measuring device of the utility model.
Detailed Description
The embodiment of the micro-arc high-precision measuring device for the linear guide rail comprises a gantry supporting frame 1, a micrometer fixed block 2, a left copying block 3, a right copying block 4, a horizontal thrust elastic piece 5 and a micrometer 23, wherein the width direction of the linear guide rail to be measured is X direction, the height direction of the linear guide rail to be measured is Z direction, the length direction of the linear guide rail to be measured is Y direction, the gantry supporting frame 1 can be arranged on the micrometer fixed block 2 in a linear sliding manner in the X direction, the left copying block 3 can be arranged on the gantry supporting frame 1 in a linear sliding manner in the X direction, the right copying block 4 is fixedly connected with the gantry supporting frame, the horizontal thrust elastic piece 5 provides the left copying block 3 with elastic force moving towards the right copying block 4, the left side surface of the left copying block 3 is provided with a copying convex arc surface 7 matched with a left rolling way of the linear guide rail sample piece 6, the left side surface of the right copying block 4 is provided with a copying convex arc surface 7 matched with a right rolling way of the linear guide rail sample piece 6, the fixed end of the micrometer 23 is fixedly arranged on the micrometer fixed block 2, and the measuring end of the micrometer 23 and the left copying block 3 is positioned along the displacement of the measuring direction of the left copying block 3.
When the raceway spacing on the left side and the right side of the linear guide rail sample piece 6 is measured, the gantry supporting frame 1 is straddled on the linear guide rail sample piece 6, the left profiling block 3 and the right profiling block 4 are respectively positioned on the two sides of the width direction of the linear guide rail sample piece 6, the left profiling block 3 is pushed to move rightwards by utilizing the elastic force of the horizontal thrust elastic piece 5 along the X direction, the right profiling block 4 moves leftwards simultaneously, finally, the profiling convex cambered surfaces 7 on the left profiling block 3 and the right profiling block 4 are attached to the upper raceway circular cambered surface and the lower raceway circular cambered surface on the left side and the right side of the linear guide rail sample piece 6, the profiling convex cambered surfaces 7 on the left profiling block 3 and the right profiling block 4 are standard circular arcs which are subjected to precision machining, the raceway circular arcs of the linear guide rail sample piece 6 are attached through the accurate machining, the circle center positions of the linear guide rail sample piece 6 can be accurately obtained, the distance between the standard linear guide rail sample piece 3 and the micrometer fixed block 2 is measured through the micrometer 23, the distance between the standard linear guide rail sample piece 6 and the linear guide rail sample piece 6 to be measured respectively is obtained through the measurement device, the left side raceway spacing value and the right side raceway sample piece 6 to be measured through superposition calculation, the measurement value is not influenced by the measurement device, the measurement of the raceway spacing value on the right side of the side sample piece is high, the measurement accuracy is convenient, and the measurement accuracy can be measured, and the measurement accuracy is achieved, and the measurement accuracy is low.
The micrometer fixing block 2 can be installed on the left sliding seat 8 in a Z-direction linear sliding mode by a set distance, the right profiling block 4 can be installed on the right sliding seat 9 in a Z-direction linear sliding mode by a set distance, and the left supporting elastic piece 10 and the right supporting elastic piece 11 respectively provide elastic floating maintaining force along the Z-direction for the micrometer fixing block 2 and the right profiling block 4.
The self weight of the upper half part of the linear guide rail micro-arc high-precision measuring device is overcome through the left support elastic piece 10 and the right support elastic piece 11, so that the left profiling block 3 and the right profiling block 4 are stressed and balanced in the Z direction, the self-adaptive height adjustment can be tightly attached to the four raceway arc surfaces of the linear guide rail sample piece 6, the left support elastic piece 10 and the right support elastic piece 11 are recently springs which elastically stretch along the Z direction, spring slots which extend along the Z direction are formed in the upper sides of the left sliding seat 8 and the right sliding seat 9, spring slots which extend along the Z direction are formed in the lower sides of the micrometer fixed block 2 and the profiling block, and the two ends of the left support elastic piece 10 and the right support elastic piece 11 are respectively inserted into the spring slots to realize fixed positioning, and the left support elastic piece 10 and the right support elastic piece 11 can be one spring or a plurality of springs, so that the left support elastic piece 10 and the right support elastic piece 11 are equivalent replacement structures which are easy to think by a person skilled in the art according to the application, and belong to the protection scope of the application.
The left slide 8 is fixedly provided with a left side plate 12 extending along the Z direction, the right slide 9 is fixedly provided with a right side plate 13 extending along the Z direction, the left side plate 12 and the right side plate 13 are respectively provided with a strip hole 14 extending along the Z direction, the micrometer fixed block 2 and the right profiling block 4 are respectively fixedly provided with a connecting piece, and the connecting pieces are respectively inserted into the strip holes 14 of the left side plate 12 and the right side plate 13 along the Z direction along the X direction stop. The left side plate 12 and the right side plate 13 are distributed on the left side and the right side of the whole device to form lateral support and limit on the micrometer fixed block 2 and the right profiling block 4, so that the micrometer fixed block 2 and the right profiling block 4 can slide back and forth only in the Z direction, and the distance of elastic movement of the micrometer fixed block 2 and the right profiling block 4 in the Z direction is limited through the long strip hole 14.
The lower ends of the left sliding seat 8 and the right sliding seat 9 are respectively and fixedly provided with a left ball 17 plate 15 and a right ball 17 plate 16, and the left ball 17 plate 15 and the right ball 17 plate 16 are respectively in rolling contact with the measuring platform through a plurality of rolling balls 17.
During measurement, because the weight of the rail to be measured is relatively large and the rail is not easy to move, the measuring device is required to move, a human hand can only move in a large direction, after the rail is assembled, the measuring device is required to shrink and clamp the linear rail sample in a small range by means of the force of the horizontal thrust elastic piece 5, the friction force between the working table surface and the measuring device can be overcome by adopting the left ball 17 plate 15 and the right ball 17 plate 16, the linear rail sample can be conveniently clamped by the measuring device in a self-moving manner, in the process, the left ball 17 plate 15 and the right ball 17 plate 16 are in rolling contact with the measuring platform, the movable friction force of the device for freely moving left and right is greatly reduced, and the measuring error caused by the friction force can be avoided because the left profiling block 3 and the right profiling block 4 are not tightly attached to the roller paths on the left side and the right side of the linear rail sample 6.
The novel micrometer push plate is characterized by further comprising a micrometer push plate 18, wherein the micrometer push plate 18 can be arranged on the gantry support frame 1 in a linear sliding mode along the X direction, the micrometer push plate 18 is fixedly connected with the left profiling block 3, and the measuring end of the micrometer 23 is in stop positioning with the micrometer push plate 18. The micrometer push plate 18 moves left and right synchronously along with the left profiling block 3 sliding left and right, the movement distance difference of the micrometer push plate 18 is the difference of the left and right roller track distances of the standard linear guide sample 6 and the linear guide sample 6 to be measured when the standard linear guide sample 6 and the linear guide sample 6 to be measured are measured, the optimal lower end of the micrometer push plate 18 is fixed on the left profiling block 3, a slideway extending along X is optimally formed on the gantry supporting frame 1, and the micrometer push plate 18 can be inserted in the slideway on the gantry supporting frame 1 in a relatively sliding manner along the X direction, so that the micrometer push plate 18 can move along the X direction only.
The micrometer fixing block 2 is provided with a micrometer fixing rod mounting hole 19, the micrometer push plate 18 is provided with a micrometer telescopic rod mounting hole 20, and the micrometer 23 fixing rod and the telescopic rod can be respectively and detachably fixed and inserted into the micrometer fixing rod mounting hole 19 and the micrometer telescopic rod mounting hole 20.
The fixed rod and the telescopic rod of the micrometer 23 are respectively inserted into the micrometer fixed rod mounting hole 19 and the micrometer telescopic rod mounting hole 20, and then the micrometer 23 fixed rod and the micrometer 23 telescopic rod are locked and fixed with the micrometer fixed block 2 and the micrometer push plate 18 through screws, so that the micrometer 23 is convenient to mount and dismount, and the moving distance of the micrometer 23 reading and the micrometer push plate 18 is consistent.
The left profiling block 3 is fixedly provided with a spring pushing block 21, the side wall of the micrometer fixing block 2 is provided with a left spring slot horizontally extending along the X direction, the side wall of the spring pushing block 21 is provided with a right spring slot horizontally extending along the X direction, the horizontal thrust elastic piece 5 is a spring, and two ends of the horizontal thrust elastic piece 5 in the extending direction are respectively fixedly inserted into the left spring slot and the right spring slot. The above structure can ensure that the spring stretches only along the X direction.
The gantry support frame 1 is also fixedly provided with a precise linear guide rail 22 which linearly extends along the X direction, and the left profiling block 3 is fixedly connected with a slide block of the precise linear guide rail 22. The left profiling block 3 is ensured to slide only along the X direction, and further the measurement accuracy is ensured.
A high-precision measuring method for a micro-arc of a linear guide rail comprises the following steps:
The method comprises the steps of firstly, horizontally placing a selected standard linear guide rail on a measuring platform, enabling a gantry support frame 1 of a linear guide rail micro-arc high-precision measuring device to cross two sides of the width direction of the standard linear guide rail, enabling a left profiling block 3 and a right profiling block 4 to be respectively positioned at two sides of the width direction of the standard linear guide rail, and enabling raceway surfaces at two sides of the standard linear guide rail not to be tightly attached to the left profiling block 3 and the right profiling block 4;
Loosening the horizontal thrust elastic piece 5, pushing the left profiling block 3 to elastically slide rightwards under the elastic force of the horizontal thrust elastic piece 5, further enabling the profiling convex arc surface 7 on the left direction block to be attached to the upper and lower raceway arc surfaces on the left side of the standard linear guide rail, slightly pressing down the gantry supporting frame 1 for multiple times, enabling the left supporting elastic piece 10 and the right supporting elastic piece 11 to overcome the self weight of the upper half part of the linear guide rail micro-arc high-precision measuring device, and enabling the left profiling block 3 and the right compact profiling block to be adaptively adjusted to be tightly attached to the four raceway arc surfaces on the standard linear guide rail or the linear guide rail sample piece 6;
The upper and lower raceway circular arc surfaces on the right side of the standard linear guide rail cannot be jointed due to the fact that the weight of the standard linear guide rail is large (approximately 10 kg), under the action of the horizontal thrust elastic piece 5, the left mechanism of the device has a tendency of moving left and right, under the tendency, the gantry support frame 1 and the right profiling block 4 on the gantry support frame are pulled to slide left and right, the profiling convex arc surface 7 on the right profiling block 4 is jointed on the upper and lower raceway circular arc surfaces on the right side of the standard linear guide rail, the left profiling block 3 and the right profiling block 4 can only push the joint raceway surface left and right, namely, in the horizontal direction under the action of the horizontal thrust elastic piece 5, the arc on the precisely machined left profiling block 3 and right profiling block 4 cannot be effectively jointed with the raceway circular arc surface of the linear guide rail sample piece, at the moment, the gantry support frame 1 needs to be slightly pressed for multiple times, and the left support elastic piece 10 and the right support elastic piece 11 can overcome the self weight of the upper half of the device, so that the left profiling block 3 and the right profiling block 4 can be adaptively adjusted to be closely jointed with the four raceway circular arc surfaces of the linear guide rail sample piece 6;
Zeroing the micrometer on the micro-arc high-precision measuring device of the linear guide rail;
The linear guide rail sample 6 is horizontally placed on a measuring platform, a linear guide rail micro-arc high-precision measuring device is taken down from a standard linear guide rail, a gantry supporting frame 1 of the linear guide rail micro-arc high-precision measuring device spans across the two sides of the linear guide rail sample 6 in the width direction, a left profiling block 3 and a right profiling block 4 are respectively positioned on the two sides of the linear guide rail sample 6 in the width direction, and at the moment, raceway surfaces on the two sides of the linear guide rail sample 6 are not tightly attached to the left profiling block 3 and the right profiling block 4;
Loosening the horizontal thrust elastic piece 5, pushing the left profiling block 3 to elastically slide rightwards under the elastic force of the horizontal thrust elastic piece 5, further enabling the profiling convex arc surface 7 on the left direction block to be attached to the upper and lower raceway arc surfaces on the left side of the linear guide rail sample piece 6, slightly pressing down the gantry supporting frame 1 for multiple times, enabling the left supporting elastic piece 10 and the right supporting elastic piece 11 to overcome the self weight of the upper half part of the linear guide rail micro-arc high-precision measuring device, and enabling the left profiling block 3 and the right compact profiling block to be adaptively adjusted to be tightly attached to the four raceway arc surfaces on the standard linear guide rail or the linear guide rail sample piece 6;
Because the standard linear guide rail sample piece 6 is large in weight (approximately 10 kg) and inconvenient to move, the upper and lower raceway arc surfaces on the right side of the linear guide rail sample piece 6 cannot be attached, and under the reactive force of the horizontal thrust elastic piece 5, a mechanism on the left side of the device has a tendency of moving left and left, under the tendency, the gantry support frame 1 and the right profiling block 4 on the gantry support frame are pulled to slide left at the same time, and the profiling convex arc surfaces 7 on the right profiling block 4 are attached to the upper and lower raceway arc surfaces on the right side of the linear guide rail sample piece 6;
The left profiling block 3 and the right profiling block 4 can only push the joint roller way surface in the left-right direction, namely the horizontal direction under the action of the horizontal thrust elastic piece 5, the circular arcs on the precisely machined left profiling block 3 and right profiling block 4 can not effectively joint the roller way circular arc surfaces of the linear rail sample piece in the vertical direction, the gantry support frame 1 is required to be slightly pressed for a plurality of times at the moment, the self weight of the upper half part of the device can be overcome by the left support elastic piece 10 and the right support elastic piece 11, and the left profiling block 3 and the right profiling block 4 are self-adaptively adjusted to be tightly jointed with the four roller way circular arc surfaces of the linear guide rail sample piece 6;
step six, recording the reading of a micrometer on the micro-arc high-precision measuring device of the linear guide rail;
And seventhly, carrying out superposition calculation on the standard raceway spacing values on the left side and the right side of the standard linear guide rail and the numerical values read by the micrometer to obtain a comprehensive numerical value, wherein the comprehensive numerical value is the actual raceway spacing value on the left side and the right side of the linear guide rail sample 6.
The linear guide rail micro-arc high-precision measuring device is adopted in the measuring method, and is simple in structure and light in weight, the linear guide rail micro-arc high-precision measuring device can slide left and right to adapt to the raceway position of the linear guide rail, a linear rail sample piece does not need to be moved, the placement position of the linear rail sample piece to be measured cannot influence measurement, the raceway cambered surface of the linear guide rail sample piece 6 is attached to the copying cambered surface 7 processed with high precision, the fitting error of a sampling point is avoided, the measuring precision is guaranteed, long-term stable size monitoring can be provided for production, the measuring time of each measurement of the sampling point and the fitting curve is 30 minutes through the three-coordinate measuring instrument, the measuring time is only 5 minutes, the universal three-coordinate measuring instrument is adopted for measurement, and the measuring cost of 0.0015mm is about 115 ten thousand if the measuring time is required, the purchase cost of the universal three-coordinate measuring instrument is about 0.6 ten thousand, the cost of measuring equipment is greatly reduced, and when the measuring instrument is adopted, 1 person is required to measure, and the measuring instrument is required to be carried by 1 person.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202420556613.2U CN222144018U (en) | 2024-03-21 | 2024-03-21 | Micro-arc high-precision measuring device for linear guide rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420556613.2U CN222144018U (en) | 2024-03-21 | 2024-03-21 | Micro-arc high-precision measuring device for linear guide rail |
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| CN202420556613.2U Active CN222144018U (en) | 2024-03-21 | 2024-03-21 | Micro-arc high-precision measuring device for linear guide rail |
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