CN115597455B - Buoy caliper for measuring spline M value and method for measuring spline M value - Google Patents
Buoy caliper for measuring spline M value and method for measuring spline M valueInfo
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- CN115597455B CN115597455B CN202211232665.6A CN202211232665A CN115597455B CN 115597455 B CN115597455 B CN 115597455B CN 202211232665 A CN202211232665 A CN 202211232665A CN 115597455 B CN115597455 B CN 115597455B
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- spline
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/20—Slide gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The buoy caliper for measuring the M value of the spline comprises a main scale, a vernier scale matched with the main scale, a fixed claw is arranged on the main scale, a movable claw aligned with the fixed claw is arranged on the floating scale, and ball measuring rods matched with the measured spline are detachably arranged on the fixed claw and the movable claw. The invention has higher measurement accuracy and reliability, larger adjustable stroke, low requirement on operators, higher universality and practicability and higher measurement reliability of the M value of the conical spline, and the measurement operation is similar to that of a common buoy caliper. The invention also provides a method for measuring the spline M value.
Description
Technical Field
The invention relates to a buoy caliper for measuring a spline M value and a method for measuring the spline M value, and belongs to the technical field of spline M value measurement.
Background
In a gear box, a gear shifting mechanism is provided, and a sliding gear sleeve is used for disengaging or combining with combining teeth on gears with different gear positions at two ends of the sliding gear sleeve so as to achieve different rotation speeds and torques. In order to prevent gear shift, the internal spline teeth of the sliding tooth sleeve and the external spline joint teeth of the gear teeth are designed as inverted conical teeth, and in order to achieve the designed matching relationship, the tooth thickness or M value of the internal spline and the external spline (the tooth thickness and the M value can be calculated mutually) needs to be controlled. In the prior art, one standard ball measuring rod with the same diameter is placed in two opposite tooth grooves in an internal gear or an internal spline hole respectively, then the linear distance between the two standard ball measuring rods is measured, the obtained size is the rod spacing, and the rod spacing is called as an M value in the industry. The M value measurement belongs to the length dimension measurement paradigm, and the measurement accuracy and the measurement efficiency mainly depend on the used measuring tool and the standard ball measuring rod. Currently, the measuring tools used for measuring the M value in the industry mainly have two types, namely a vernier caliper and a standard gauge block. For products with low precision requirements, the vernier caliper is used for directly measuring the M value between two standard ball measuring bars, and for products with high precision requirements, the standard gauge block combination is used for measuring the M value. The vernier caliper is used for measurement, and although the measurement is simple and convenient, the measurement error is large. The combined measurement of standard blocks has high accuracy, but the measurement efficiency is too low, and the skill requirement on operators is relatively high. So that the measurement of the M value of a spline or gear has mainly the following drawbacks:
1. the same gauge cannot be used for inner and outer gears;
2. the operation process is complicated to adjust, and the requirements on experience and skills of operators are high;
3. The adjustable stroke is smaller, and the precision requirement on the standard ball measuring rod is high;
4. When measuring the spline or gear of the bevel gear, the M value can not be measured at the same section position every time, and the measurement reliability is not high.
The related patent documents retrieved are:
1. CN 201521100665.6-a measuring tool for measuring the M value of a spline;
2. CN 201620526356.3-external spline measurement tool;
3. CN 201810891029.1-an internal gear and an internal spline M value measuring device;
4. CN 201811263508.5-a measuring tool and a measuring method for the abrasion loss of involute internal splines;
5. CN 201811368107.6-a gear M value measuring device and a detecting method;
6. CN 201820298902.1-a handheld internal spline M value gauge;
7. CN 202220481103.4-a positioning reference-free small-size internal spline M value measuring device.
Disclosure of Invention
The buoy caliper for measuring the spline M value is simple and feasible in operation process, the measurement accuracy is independent of the accuracy of the ball measuring rod, the measurement accuracy and reliability are higher, the adjustable stroke is larger, the requirements on operators are low, the measurement of the spline M value with different specifications can be realized by only replacing the ball measuring rod and the M value standard block and adjusting the ball head directions of the two ball measuring rods, the detection of the internal spline and the external spline can be realized, the universality and the practicability are higher, the measurement error of the conical spline due to different measurement section positions is avoided, and the measurement reliability of the conical spline M value is improved. The invention also provides a method for measuring the spline M value.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The buoy caliper for measuring the M value of the spline comprises a main scale, a vernier scale matched with the main scale, a fixed claw is arranged on the main scale, a movable claw aligned with the fixed claw is arranged on the floating scale, and ball measuring rods matched with the measured spline are detachably arranged on the fixed claw and the movable claw.
Preferably, the main body of the measuring tool is provided with a main ruler guide groove, the adjustable main ruler is matched and arranged in the main ruler guide groove, the vernier ruler is sleeved on the main body of the measuring tool in a guide matching way, the adjustable main ruler is provided with an adjusting and positioning assembly, and the adjustable main ruler moves in a guide way on the main body of the measuring tool along with the adjustment of the adjusting and positioning assembly and is positioned along with the positioning of the adjusting and positioning assembly.
Preferably, the cross section of adjustable main scale be protruding style of calligraphy, the one side that adjustable main scale carved with the scale mark flushes with measuring tool main part surface, the scale mark cooperation setting of vernier scale is in the below of adjustable main scale mark, screw knurl locking screw on the vernier scale is first will float the scale location in the measuring tool main part.
Preferably, the adjusting and positioning assembly comprises a screw fixed at one end of the adjustable main ruler, a knurled adjusting nut in threaded fit with the screw, and a knurled locking screw II in threaded fit with the adjustable main ruler, the measuring tool main body is provided with a through hole for the screw to pass through and a groove for accommodating the knurled adjusting nut, the screw passes through the through hole to be fixed with the adjustable main ruler, the screw drives the adjustable main ruler to move in a guiding groove of the main ruler along with rotation of the knurled adjusting nut, the knurled locking screw II is arranged at two ends of the adjustable main ruler, and the adjustable main ruler is positioned along with screwing of the knurled locking screw II.
Preferably, the ball measuring rod consists of a threaded rod body and a detection ball head which is integrally formed at one end of the rod body and matched with a measured spline, the lower ends of the fixed clamping jaw and the movable clamping jaw are respectively provided with a mounting hole matched with the rod body, the detection ball heads of the two ball measuring rods are oppositely arranged when the fixed clamping jaw and the movable clamping jaw are matched with an internal spline, and the detection ball heads of the two ball measuring rods are oppositely arranged when the fixed clamping jaw and the movable clamping jaw are matched with an external spline.
Preferably, the cross sections of the fixed claw and the movable claw are rectangular, the fixed claw and the movable claw are provided with measuring section control blocks which can be contacted with the end face of the measured spline, and the measuring section control blocks are sleeved on the fixed claw and the movable claw in a guiding fit manner and positioned on the fixed claw and the movable claw through knurled locking screws III.
Preferably, the M value standard block is divided into an internal spline M value standard block with an internal spline and an external spline M value standard block with an external spline.
The measuring method of the spline M value adopts the buoy caliper for measuring the spline M value for measurement, and is characterized by comprising the following steps:
S1, selecting a corresponding ball measuring rod and an M value standard block according to the M value measurement requirement of a measured spline, and then mounting the ball measuring rod on a fixed claw and a movable claw;
s2, placing the M value standard block between a fixed claw and a movable claw, moving a vernier to enable ball measuring bars on the fixed claw and the movable claw to extend into spline grooves of the M value standard block respectively, and positioning the vernier to radially position the M value standard block;
s3, moving an adjustable main scale on the measuring tool main body, enabling the readings of the adjustable main scale and the floating scale to be the standard M value of an M value standard block in a matched measurement mode, and positioning the adjustable main scale on the measuring tool main body;
s4, loosening the positioning of the floating scale to take down the M value standard block, placing the measured spline between the fixed claw and the movable claw, moving the floating scale to enable ball measuring rods on the fixed claw and the movable claw to extend into spline grooves of the measured spline respectively, and positioning the floating scale to radially position the measured spline;
and S5, reading the matched measurement reading of the adjustable main scale and the floating scale, namely the M value of the measured spline.
Preferably, the step S1 specifically means:
When the M value of the external spline is measured, firstly selecting a corresponding ball measuring rod and an external spline M value standard block according to the M value measurement requirement of the measured spline, and then mounting the ball measuring rod on a fixed claw and a movable claw, and enabling the detection ball heads of the two ball measuring rods to be arranged oppositely;
when the M value of the internal spline is measured, a corresponding ball measuring rod and an internal spline M value standard block are selected according to the M value measurement requirement of the measured spline, and then the ball measuring rod is arranged on the fixed claw and the movable claw, so that the detection ball heads of the two ball measuring rods are arranged opposite to each other.
Preferably, in step S4, after the standard block of the M value is removed, according to the measured position of the M value of the measured spline, the positions of the measuring section control block on the fixed jaw and the movable jaw are adjusted, so that the distance between the center of the circle of the measuring section control block and the detecting ball head is equal to the distance between the position where the detecting ball head is matched with the measured spline and the upper end face of the measured spline, and then the measured spline is placed between the fixed jaw and the movable jaw, so that the upper end face of the measured spline contacts with the measuring section control block when the measured spline is radially positioned.
The invention has the beneficial effects that:
the invention discloses a buoy caliper for measuring an M value of a spline, which comprises a measuring tool main body and an adjustable main scale, wherein the adjustable main scale and the vernier scale can move on the measuring tool main body, an M value standard block is matched with ball measuring rods on a fixed claw and a movable claw to form radial positioning, when the M value of the spline is measured, the M value standard block of the spline to be measured is firstly positioned between two ball measuring rods in the radial direction, then the adjustable main scale is moved on the measuring tool main body to enable the reading of the adjustable main scale and the floating scale to be matched with the standard M value of the M value standard block, the adjustable main scale is positioned, namely the scale to be calibrated for the standard M value of the spline to be measured, then the M value of the spline to be measured is measured, in the measuring process, only the floating scale is required to be moved, the matched measurement value of the adjustable main scale and the floating scale is required to be measured, and the measuring rod is required to be moved, and the measuring precision is required to be changed by a common measuring rod and the two measuring rods.
The measuring section control block is respectively installed on the fixed stop claw and the movable claw, the positions of the measuring section control block on the fixed claw and the movable claw are adjustable, the measured spline is enabled to be parallel to the fixed claw and not inclined through the measuring section control block when the straight-tooth spline is measured, the measuring accuracy is improved, the measuring section control block is enabled to be in contact with the end face of the measured spline when the conical spline is measured, the fact that the ball measuring rod is matched with the position of the section with the same end face distance when the product with the same specification is measured each time is guaranteed, the same measuring section position is guaranteed each time, measuring errors caused by different measuring section positions of the conical spline are avoided, and the measuring reliability of the M value of the conical spline is improved.
Drawings
FIG. 1 is a schematic illustration of a floating caliper for measuring spline M values when a ball stick is mated with a standard block of internal spline M values.
Fig. 2 is a schematic diagram of the cooperation of the ball stick and the standard block of the M value of the internal spline.
FIG. 3 is a schematic illustration of a floating caliper for measuring spline M values when a ball stick is mated with an external spline M value standard block.
Fig. 4 is a schematic diagram of the cooperation of the ball stick and the standard block of the M value of the internal spline.
Fig. 5 is a schematic view of the fixed jaw and the movable jaw in a state in which the measuring heads of the ball measuring bars are arranged opposite to each other.
FIG. 6 is a schematic cross-sectional view of the fit of the gauge main scale, adjustable main scale and vernier.
Detailed Description
Embodiments of the present invention are described in detail below with reference to fig. 1 to 6.
The buoy caliper for measuring the M value of the spline comprises a main caliper 1, a vernier scale 2 matched with the main caliper 1, a fixed claw 3 arranged on the main caliper 1, a movable claw 4 aligned with the fixed claw 3 arranged on the floating caliper 2, and a ball measuring rod 5 detachably arranged on the fixed claw 3 and the movable claw 4 and matched with the measured spline, and is characterized by also comprising an M value standard block 6 with the standard M value of the measured spline, wherein the main caliper 1 comprises a measuring tool main body 7 and an adjustable main caliper 8 movably arranged in the measuring tool main body 7, the fixed claw 3 and the measuring tool main body 7 are integrally formed, the vernier scale 2 is movably sleeved on the measuring tool main body 7 and is matched with the adjustable main caliper 8 for measurement, and the M value standard block 6 is radially positioned along with the extension of the ball measuring rod 5.
The main scale 1 comprises the measuring tool main body 7 and the adjustable main scale 8, the adjustable main scale 8 and the vernier scale 2 can move on the measuring tool main body 7, the M value standard block 6 is matched with the ball measuring rods 5 on the fixed clamping jaw 3 and the movable clamping jaw 4 to form radial positioning, when the M value of the spline is measured, the M value standard block 6 of the measured spline is firstly positioned between the two ball measuring rods 5 in the radial direction, then the adjustable main scale 8 is moved on the measuring tool main body 7 to enable the reading of the matching measurement of the adjustable main scale 8 and the vernier scale 2 to be the standard M value of the M value standard block, the adjustable main scale 8 is positioned to form a pair of scales for the standard M value of the measured spline, then the M value measurement of the measured spline is carried out, only the floating scale 2 is required to be moved in the measuring process, and the matching measurement value of the moved adjustable main scale 8 and the floating scale 2 is the M value of the measured spline; the adjustable main scale 8 is moved to realize scale calibration of a standard M value, the vernier scale 2 is moved to realize measurement of the measured spline M value, the operation process is simple and easy to implement, the measurement accuracy is determined by the scale of the adjustable main scale 8, the scale of the vernier scale 2 and the standard M value of the M value standard block 6, the accuracy and the reliability of measurement are higher, the adjustable stroke of measurement is determined by the length of the adjustable main scale 8, the adjustable stroke is larger, the measurement operation is similar to the operation of a common buoy caliper, the requirement on operators is low, the ball measuring bars 5 and the M value standard block 6 are only required to be replaced when the spline M values of different specifications are measured, the ball measuring bars 5 are respectively arranged on the fixed clamping jaw 3 and the movable clamping jaw 4, the detection of the internal spline and the external spline can be realized only by adjusting the ball head directions of the two ball measuring bars 5, and the universality and the practicability are higher.
Wherein, a main scale guide groove 71 is arranged in the measuring tool main body 7, an adjustable main scale 8 is in guide fit with the main scale guide groove 71, the vernier scale 2 is in guide fit with the measuring tool main body 7, an adjusting and positioning component 9 is arranged on the adjustable main scale 8, and the adjustable main scale 8 moves on the measuring tool main body 7 in a guide way along with the adjustment of the adjusting and positioning component 9 and is positioned along with the positioning of the adjusting and positioning component 9. The adjustable main scale 8 and the vernier scale 2 are in guiding fit with the measuring tool main body 7, and can move along the measuring tool main body 7, the adjustable main scale 8 is driven by the adjusting and positioning assembly 9 to conduct guiding movement on the measuring tool main body 7, when the M value standard block is subjected to scale alignment, the adjustable main scale 8 is moved by the adjusting and positioning assembly 8, so that the reading measured by the adjustable main scale 8 and the floating scale 2 in fit with the standard M value of the M value standard block, the adjustable main scale 8 is positioned, and the adjustable main scale 8 is kept motionless when the spline is measured, and only the floating caliper 2 moves. The adjustable main scale 8 can measure the spline of the same specification after being positioned. When the spline of different specifications is required to be measured, the M value standard block 6 with the measured spline standard M value is used for calibrating the adjustable main scale 8, the spline is measured after the position of the adjustable main scale 8 is calibrated, the adjustable main scale 8 can move and be positioned in the measuring tool main body 7 along with the adjusting and positioning assembly 9, the spline M value of different specifications is convenient to measure, the adjustable main scale 8 is only required to be calibrated, the standard M value of the measured spline is determined, the measured spline is measured, the measurement of the spline of different specifications is realized, and the spline measuring tool is simple in operation and high in practicability.
Wherein, the cross section of adjustable main scale 8 personally submits the protruding style of calligraphy, the one side that adjustable main scale 8 carved with the scale mark flushes with measuring tool main part 7 surface, the scale mark cooperation of vernier scale 2 sets up in the below of adjustable main scale 8 scale mark, screw knurl locking screw one 21 on the vernier scale 2 will float the scale location on measuring tool main part 7. It can be seen from the drawings that the cross section of the adjustable main scale 8 is in a convex shape, and the cross section of the main scale guide groove 71 is matched with the adjustable main scale 8, so that the adjustable main scale 8 is limited in the measuring tool main body 7 and can only move along the main scale guide groove 71, and the matching reliability of the adjustable main scale 8 and the floating scale 2 is ensured. The scale marks of the adjustable main scale 8 and the scale marks of the floating scale 2 are matched, the position distribution of the scale marks of the main scale and the position distribution of the scale marks of the vernier in a common vernier caliper are the same, and the scale marks of the adjustable main scale 8 and the scale marks of the floating scale 2 are matched to realize the reading of numerical values in the scale calibration and measurement process.
The adjusting and positioning assembly 9 comprises a screw 91 fixed at one end of the adjustable main scale 8, a knurled adjusting nut 92 in threaded fit with the screw 91, and a knurled locking screw II 93 in threaded fit with the adjustable main scale 8, the measuring tool main body 7 is provided with a through hole 72 for the screw 91 to pass through and a groove 73 for accommodating the knurled adjusting nut 92, the screw 91 passes through the through hole 72 to be fixed with the adjustable main scale 8, the screw 91 drives the adjustable main scale 8 to move in a guiding way in the main scale guiding groove 71 along with the rotation of the knurled adjusting nut 92, the knurled locking screw II 93 is arranged at two ends of the adjustable main scale 8, and the adjustable main scale 8 is positioned along with the screwing of the knurled locking screw II 93. The knurled adjusting nut 92 can only rotate in the groove 73 to drive the screw 91 to move in the through hole 72, the screw 91 drives the adjustable main scale 8 to move in the main scale guide groove 71, the position of the adjustable main scale 8 is adjusted, and after the adjustable main scale 8 is adjusted in place, the second knurled locking screw 93 is screwed to position the adjustable main scale 8, so that the movement of the adjustable main scale 8 in the spline measurement process is prevented. The adjustable main scale 8 moves and carries out scale calibration to the standard M value of the M value standard block 6, so that the measurement accuracy of the measured spline is determined by the scale mark accuracy of the adjustable main scale 8, the scale mark accuracy of the vernier scale 2 and the size accuracy of the M value standard block 6, the accuracy of the ball measuring rod 5 is not depended on, the accuracy requirement on the ball measuring rod 5 is lower, the dependence on the accuracy of the ball measuring rod 5 is reduced, and the measurement accuracy can be effectively improved.
The ball measuring rod 5 consists of a threaded rod body 51 and a detection ball head 52 integrally formed at one end of the rod body 51 and matched with a measured spline, mounting holes matched with the rod body 51 are formed in the lower ends of the fixed clamping jaw 3 and the movable clamping jaw 4, the detection ball heads 52 of the two ball measuring rods 5 are oppositely arranged when matched with an internal spline, and the detection ball heads 52 of the two ball measuring rods 5 are oppositely arranged when matched with an external spline. The rod body 51 passes through the mounting hole and is screwed and positioned by the nut, so that the measuring rod 5 can be disassembled, different key grooves of the inner spline and the outer spline are adapted to be distributed, the detecting ball heads 52 of the two ball measuring rods 51 are matched with the inner spline when being oppositely arranged, and are matched with the outer spline when being oppositely arranged, and the measuring of the inner spline and the outer spline can be realized by only adjusting the positions of the detecting ball heads 52 in the ball measuring rod 5, so that the measuring rod is convenient and practical.
The cross sections of the fixed claw 3 and the movable claw 4 are rectangular, the fixed claw 3 and the movable claw 4 are provided with a measuring section control block 10 which can be contacted with the end face of the measured spline, and the measuring section control block 10 is sleeved on the fixed claw 3 and the movable claw 4 in a guiding fit manner and is positioned on the fixed claw 3 and the movable claw 4 through a knurled locking screw III 11. The position of the measurement section control block 10 on the fixed claw 3 and the movable claw 4 is adjustable, when the straight-tooth spline is measured, the measured spline is enabled to be parallel to the fixed claw and not inclined through the measurement section control block 10, the measurement accuracy is improved, when the conical spline is measured, the measurement section control block 10 is enabled to be in contact with the end face of the measured spline, the position cooperation of the ball measuring rod 5 with the section with the same distance with the end face is guaranteed when the product with the same specification is measured each time, the same position of the section measured each time is guaranteed, the measurement error formed by the conical spline due to different positions of the measurement section is avoided, and the measurement reliability of the M value of the conical spline is improved.
Wherein, the M value standard block 6 is divided into an internal spline M value standard block 61 with an internal spline and an external spline M value standard block 62 with an external spline. The M value standard block 6 corresponding to the measured spline of each specification is provided with an internal spline standard block 61 and an external spline M value standard block 62, and is used for scale calibration of the internal spline and the external spline of various specifications.
The invention also provides a method for measuring the spline M value, which adopts the buoy caliper for measuring the spline M value for measurement and is characterized by comprising the following steps:
S1, selecting a corresponding ball measuring rod 5 and an M value standard block 6 according to the M value measurement requirement of a measured spline, and then mounting the ball measuring rod 5 on a fixed claw 3 and a movable claw 4;
S2, placing an M value standard block 6 between a fixed claw 3 and a movable claw 4, moving a vernier 2 to enable ball measuring bars on the fixed claw 3 and the movable claw 4 to extend into spline grooves of the M value standard block 3 respectively, and positioning the M value standard block radially by the positioning floating scale 2 to realize that the M value standard block 6 of a spline to be measured is radially positioned between two ball measuring bars 5;
S3, moving an adjustable main scale 8 on the measuring tool main body 7, enabling the reading measured by the adjustable main scale 8 and the floating scale 2 to be the standard M value of the M value standard block 6, positioning the adjustable main scale 8 on the measuring tool main body 7, and forming scale calibration of the standard M value of the measured spline;
S4, loosening the positioning of the floating scale 2 to take down the M value standard block 6, placing the measured spline between the fixed claw 3 and the movable claw 4, moving the floating scale 2 to enable the ball measuring rods 5 on the fixed claw 3 and the movable claw 4 to extend into spline grooves of the measured spline respectively, and positioning the floating scale 2 to radially position the measured spline;
And S5, reading the matched measurement reading of the adjustable main scale 8 and the floating scale 2, namely the M value of the measured spline.
When the M value of the spline is measured, the M value standard block 6 of the measured spline is radially positioned between two ball measuring rods 5, then the adjustable main scale 8 is moved on the measuring tool main body 7, the reading of the adjustable main scale 8 and the floating scale 2, which are matched and measured, is the standard M value of the M value standard block, the adjustable main scale 8 is positioned, namely, the standard M value of the measured spline is formed, then the M value of the measured spline is measured, only the floating scale 2 is required to be moved in the measuring process, the matched and measured value of the adjustable main scale 8 and the floating scale 2 after the movement is read, namely, the M value of the measured spline is obtained, the measuring process is simple and easy to operate, the spline with one specification is measured, namely, the adjustable main scale 8 is calibrated once, and the accurate measurement can be formed.
The step S1 specifically refers to:
When the M value of the external spline is measured, firstly, selecting a corresponding ball measuring rod 5 and an external spline M value standard block 62 according to the M value measurement requirement of the measured spline, and then installing the ball measuring rod 5 on the fixed claw 3 and the movable claw 4, and arranging the detection ball heads 52 of the two ball measuring rods 5 relatively;
When the M value of the internal spline is measured, the corresponding ball measuring rod 5 and the internal spline M value standard block 61 are selected according to the M value measurement requirement of the measured spline, and then the ball measuring rod 5 is arranged on the fixed claw 3 and the movable claw 4, and the detection ball heads 52 of the two ball measuring rods 5 are arranged opposite to each other.
The M value standard block 6 corresponding to the measured spline of each specification is provided with an internal spline standard block 61 and an external spline M value standard block 62, and is used for scale calibration of the internal spline and the external spline of various specifications.
After the standard block 6 with the M value is removed in step S4, the positions of the control block 10 with the measured section on the fixed jaw 3 and the movable jaw 4 are adjusted according to the measured position of the M value of the measured spline, so that the distance between the center of the circle of the control block 6 with the measured ball 52 with the measured section is equal to the distance between the position of the measured ball 52 matched with the measured spline and the upper end face of the measured spline, and then the measured spline is placed between the fixed jaw 3 and the movable jaw 4, so that the upper end face of the measured spline contacts with the control block 10 with the measured section when the measured spline is radially positioned. The distance between the measuring section control block 6 and the center of the detecting ball 52 is equal to the distance between the position of the detecting ball 52 matched with the measured spline and the upper end face of the measured spline, so that the measuring section control block 10 just contacts with the upper end face of the measured spline when measuring the conical spline, the distance between the measuring section control block 6 and the center of the detecting ball 52 is kept unchanged, the position of the ball measuring rod 5 matched with the position of the section with the same end face distance when measuring products of the same specification each time is ensured, the positions of the sections measured each time are the same, the measuring error caused by different measuring section positions of the conical spline is avoided, and the measuring reliability of the M value of the conical spline is improved.
The foregoing disclosure of embodiments of the present invention has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (7)
1. The buoy caliper for measuring the M value of the spline comprises a main scale, a vernier scale matched with the main scale, a fixed claw is arranged on the main scale, a movable claw aligned with the fixed claw is arranged on the floating scale, and ball measuring rods matched with the measured spline are detachably arranged on the fixed claw and the movable claw;
The main body of the measuring tool is provided with a main ruler guide groove, an adjustable main ruler is matched and arranged in the main ruler guide groove, the vernier ruler is matched and sleeved on the main body of the measuring tool, the adjustable main ruler is provided with an adjusting and positioning assembly, and the adjustable main ruler moves in a guiding way on the main body of the measuring tool along with the adjustment of the adjusting and positioning assembly and is positioned along with the positioning of the adjusting and positioning assembly;
The cross section of the adjustable main scale is in a convex shape, one surface of the adjustable main scale, on which scale marks are carved, is flush with the outer surface of the measuring tool main body, the scale marks of the vernier scale are arranged below the scale marks of the adjustable main scale in a matched manner, and the knurled locking screw on the vernier scale is screwed to position the floating scale on the measuring tool main body;
The cross sections of the fixed claw and the movable claw are rectangular, the fixed claw and the movable claw are provided with measuring section control blocks which can be contacted with the end surface of the spline to be measured, and the measuring section control blocks are sleeved on the fixed claw and the movable claw in a guiding fit manner and positioned on the fixed claw and the movable claw through knurled locking screws III;
And (3) moving the adjustable main scale on the measuring tool main body to enable the reading of the cooperation measurement of the adjustable main scale and the floating scale to be the standard M value of the M value standard block, positioning the adjustable main scale to form the standard M value calibration of the measured spline, then measuring the M value of the measured spline, wherein in the measuring process, only the floating scale is required to be moved, and the cooperation measurement value of the adjustable main scale and the floating scale after the movement is read to be the M value of the measured spline.
2. The floating calliper for measuring spline M value according to claim 1, wherein the adjusting and positioning assembly comprises a screw rod fixed to one end of the adjustable main rule, a knurled adjusting nut in threaded fit with the screw rod, and a knurled locking screw II in threaded fit with the adjustable main rule, the measuring tool main body is provided with a through hole for the screw rod to pass through and a groove for accommodating the knurled adjusting nut, the screw rod passes through and is fixed to the adjustable main rule, the screw rod drives the adjustable main rule to move in a guiding groove of the main rule along with rotation of the knurled adjusting nut, the knurled locking screw II is arranged at two ends of the adjustable main rule, and the adjustable main rule is positioned along with screwing of the knurled locking screw II.
3. The floating caliper for measuring the M value of the spline according to claim 1, wherein the ball measuring rod consists of a rod body with threads and a detection ball head integrally formed at one end of the rod body and matched with the spline to be measured, mounting holes matched with the rod body are formed at the lower ends of the fixed clamping jaw and the movable clamping jaw, the detection ball heads of the two ball measuring rods are oppositely arranged when the fixed clamping jaw and the movable clamping jaw are matched with the internal spline, and the detection ball heads of the two ball measuring rods are oppositely arranged when the fixed clamping jaw and the movable clamping jaw are matched with the external spline.
4. The floating caliper for measuring the M value of the spline according to claim 1, wherein the M value standard block is divided into an internal spline M value standard block with an internal spline and an external spline M value standard block with an external spline.
5. A method for measuring a spline M value using the float caliper for measuring a spline M value according to any one of claims 1 to 4, comprising the steps of:
S1, selecting a corresponding ball measuring rod and an M value standard block according to the M value measurement requirement of a measured spline, and then mounting the ball measuring rod on a fixed claw and a movable claw;
s2, placing the M value standard block between a fixed claw and a movable claw, moving a vernier to enable ball measuring bars on the fixed claw and the movable claw to extend into spline grooves of the M value standard block respectively, and positioning the vernier to radially position the M value standard block;
s3, moving an adjustable main scale on the measuring tool main body, enabling the readings of the adjustable main scale and the floating scale to be the standard M value of an M value standard block in a matched measurement mode, and positioning the adjustable main scale on the measuring tool main body;
s4, loosening the positioning of the floating scale to take down the M value standard block, placing the measured spline between the fixed claw and the movable claw, moving the floating scale to enable ball measuring rods on the fixed claw and the movable claw to extend into spline grooves of the measured spline respectively, and positioning the floating scale to radially position the measured spline;
and S5, reading the matched measurement reading of the adjustable main scale and the floating scale, namely the M value of the measured spline.
6. The method for measuring the M value of the spline according to claim 5, wherein the step S1 is specifically:
When the M value of the external spline is measured, firstly selecting a corresponding ball measuring rod and an external spline M value standard block according to the M value measurement requirement of the measured spline, and then mounting the ball measuring rod on a fixed claw and a movable claw, and enabling the detection ball heads of the two ball measuring rods to be arranged oppositely;
when the M value of the internal spline is measured, a corresponding ball measuring rod and an internal spline M value standard block are selected according to the M value measurement requirement of the measured spline, and then the ball measuring rod is arranged on the fixed claw and the movable claw, so that the detection ball heads of the two ball measuring rods are arranged opposite to each other.
7. The method of claim 5, wherein in step S4, after the M value standard block is removed, according to the measured position of the measured spline M value, the positions of the measured section control block on the fixed jaw and the movable jaw are adjusted so that the distance between the measured section control block and the center of the circle of the measuring ball is equal to the distance between the position where the measuring ball is matched with the measured spline and the upper end face of the measured spline, and then the measured spline is placed between the fixed jaw and the movable jaw so that the upper end face of the measured spline contacts the measured section control block when the measured spline is radially positioned.
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| CN202211232665.6A CN115597455B (en) | 2022-10-10 | 2022-10-10 | Buoy caliper for measuring spline M value and method for measuring spline M value |
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| TWI866736B (en) * | 2024-01-09 | 2024-12-11 | 正修學校財團法人正修科技大學 | Flange gap measurer |
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| CN1257377C (en) * | 2004-03-19 | 2006-05-24 | 梁加政 | Multipurpose vernier calipers and its use |
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| CN115597455A (en) | 2023-01-13 |
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