CN110940254B - Gear pitch deviation measuring method and measuring tool thereof - Google Patents
Gear pitch deviation measuring method and measuring tool thereof Download PDFInfo
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- CN110940254B CN110940254B CN201910863581.4A CN201910863581A CN110940254B CN 110940254 B CN110940254 B CN 110940254B CN 201910863581 A CN201910863581 A CN 201910863581A CN 110940254 B CN110940254 B CN 110940254B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 210000000078 claw Anatomy 0.000 claims description 25
- 238000013459 approach Methods 0.000 claims description 10
- 238000000691 measurement method Methods 0.000 claims description 3
- 239000011295 pitch Substances 0.000 description 145
- 230000001186 cumulative effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- G01B5/16—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures
- G01B5/166—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures of gear teeth
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Abstract
The invention discloses a gear pitch deviation measuring method and a measuring tool thereof, wherein the method comprises the following steps: adjusting the heights of a fixed measuring jaw and a movable measuring jaw of the tooth pitch measuring mechanism; hoisting a measuring force weight on the constant force application side of the measured gear through a hanging rope to obtain a transverse reference value of the transverse position of the tooth pitch measuring mechanism; obtaining a reference tooth pitch value of a measured reference tooth; the sliding tooth pitch measuring mechanism enables a measured first tooth to be located between the fixed measuring jaw and the movable measuring jaw; and the reading of the compression amount of the second dial indicator is consistent with the transverse reference value; obtaining a first tooth pitch value of a first measured tooth; comparing the first tooth pitch measurement value with the reference tooth pitch measurement value to obtain a tooth pitch deviation value; the gear pitch deviation measuring method is characterized in that a constant measuring force is applied to the constant force applying side of the measured gear, so that the measurement of the measured gear pitch is not easily influenced by environment and operators, and the gear pitch deviation of the measured gear is accurately measured.
Description
Technical Field
The invention relates to the technical field of measuring tools, in particular to a gear pitch deviation measuring method and a measuring tool thereof.
Background
The single pitch deviation refers to the difference between the actual pitch and the nominal pitch on the reference circle, and the cumulative total pitch deviation refers to the maximum absolute value of the difference between the actual arc length and the nominal arc length between any two tooth surfaces on the same side on the reference circle, namely the algebraic difference between the cumulative maximum pitch deviation and the cumulative minimum pitch deviation. In actual measurement, a certain pitch is usually used as a reference pitch, and deviations of the remaining pitches from the reference pitch are measured. The measuring tools comprise a universal tooth measuring instrument and a hand-held tooth pitch measuring instrument. The hand-held type tooth distance measuring instrument is small and exquisite, and when the hand-held type tooth distance measuring instrument is used, the tooth top circle of the gear is used as a reference, the tooth top circle is jacked on the tooth top circle through the two outer side measuring claws, the tooth profiles of the two adjacent teeth are respectively jacked on the same sides by adjusting the fixed measuring claws and the movable measuring claws, then the kilominute teeth are adjusted to zero, namely the gear is withdrawn and rotated by taking the tooth distance as the reference, the other tooth is changed for measurement, and the difference value of the two tooth distances is measured by repeating the. The measured pitch values are in the order of microns. The method has the defects that the position of the fixed measuring jaw cannot be changed during operation, the two measuring jaws are contacted simultaneously, the measuring force during measurement is controlled by an operator according to experience, the measuring force of each tooth is different, errors are difficult to control, and the measuring precision is influenced.
Disclosure of Invention
The invention aims to provide a gear pitch deviation measuring method and a measuring tool thereof.
The technical scheme is as follows:
a gear pitch deviation measurement method, comprising the steps of:
(1) vertically and rotatably mounting the measured gear at the upper end of the rotating shaft bracket, and adjusting the heights of a fixed measuring jaw and a movable measuring jaw of the tooth pitch measuring mechanism to enable a measured reference tooth of the measured gear to be positioned between the fixed measuring jaw and the movable measuring jaw;
(2) the measuring force weight is hung on the constant force application side of the measured gear through a hanging rope, and then the tooth pitch measuring mechanism is slid to approach the measured gear, so that the movable measuring head of the movable measuring jaw and the fixed measuring head of the fixed measuring jaw are in close contact with the middle-high position of the tooth profile on the same side of the measured reference tooth and the tooth profile adjacent to the measured reference tooth;
(3) a measuring head of the second dial indicator is close to the tooth pitch measuring mechanism, and the compression reading of the second dial indicator is collected, so that the transverse reference value of the transverse position of the tooth pitch measuring mechanism is obtained;
(4) adjusting the first dial indicator to enable a measuring head of the first dial indicator to compress the total measuring range of one third to two thirds, enabling the measuring head of the first dial indicator to be close to the movable measuring end of the movable measuring claw, and collecting the compression reading of the first dial indicator so as to obtain the reference tooth pitch value of the measured reference tooth;
(5) the sliding tooth pitch measuring mechanism is used for enabling the sliding tooth pitch measuring mechanism to slide towards the direction far away from the measured gear, and when the movable measuring head of the movable measuring jaw and the fixed measuring head of the fixed measuring jaw are both away from the addendum circle of the measured reference tooth, the angle of one tooth of the measured gear is rotated, so that the measured first tooth of the measured gear is located between the fixed measuring jaw and the movable measuring jaw; then, the tooth pitch measuring mechanism is slid to approach the measured gear until the tooth pitch measuring mechanism approaches and contacts a measuring head of the second dial indicator, and the reading of the compression amount of the second dial indicator is consistent with the transverse reference value; then hoisting a measuring force weight on the constant force application side of the measured gear through a hanging rope, and collecting the compression reading of the first dial gauge so as to obtain a first tooth pitch value of the measured first tooth;
(6) comparing the first tooth pitch measurement value with the reference tooth pitch measurement value to obtain a tooth pitch deviation value of the measured first tooth and the measured reference tooth;
(7) and (6) repeating the steps 5 to 6, and measuring the tooth pitch deviation value of each tooth of the gear to be measured.
The step 1 further comprises the following steps:
adjusting the vertical height of the measuring support to realize height adjustment of the fixed measuring jaw;
and adjusting the height of the vertical adjusting mechanism to realize the height adjustment of the movable measuring jaw, so that the measured reference tooth of the measured gear is positioned between the fixed measuring jaw and the movable measuring jaw.
The height of the vertical adjusting mechanism is adjusted by the following steps:
and rotating the screw rod forwards or reversely to reduce or enlarge the distance between the screw sleeve and the fixed measuring jaw, thereby reducing or enlarging the distance between the movable measuring jaw and the fixed measuring jaw, and enabling the measured reference tooth of the measured gear to be positioned between the fixed measuring jaw and the movable measuring jaw.
The step 2 further comprises the following steps:
the crank is rotated forward or backward, so that the tooth pitch measuring mechanism slides towards or away from the measured gear.
A gear pitch deviation measuring gauge comprising:
the gear to be measured comprises a tooth pitch measuring side and a constant force applying side, and the tooth pitch measuring side and the constant force applying side are respectively positioned on two opposite sides of the rotating shaft support;
the constant force applying mechanism comprises a hanging rope and a measuring force weight, wherein the measuring force weight is hung on the constant force applying side of the gear to be measured through the hanging rope and is used for applying a constant measuring force to the constant force applying side of the gear to be measured;
the tooth pitch measuring mechanism is used for measuring the tooth pitch between two adjacent teeth of the measured gear; the tooth pitch measuring mechanism comprises a fixed measuring jaw, a movable measuring jaw, a first dial indicator and a vertical adjusting mechanism, wherein two ends of the fixed measuring jaw respectively comprise a fixed measuring head and a fixed measuring end, two ends of the movable measuring jaw respectively comprise a movable measuring head and a movable measuring end, the lower end of the vertical adjusting mechanism is vertically and slidably connected with the middle part of the fixed measuring jaw, the middle part of the movable measuring jaw is rotatably connected with the upper end of the vertical adjusting mechanism, the first dial indicator is installed on the fixed measuring end, and a measuring head of the first dial indicator is in close contact with the movable measuring end; the fixed measuring head and the movable measuring head respectively abut against two adjacent teeth of the gear to be measured and are used for measuring the tooth pitch of the two adjacent teeth;
the transverse position calibration mechanism comprises a second dial indicator, and the second dial indicator is used for calibrating the transverse position of the tooth pitch measuring mechanism;
the measuring platform is characterized in that the transverse position calibration mechanism is arranged in the middle of the measuring platform, the lower end of the rotating shaft support is arranged on one side of the measuring platform, and the lower end of the tooth pitch measuring mechanism is slidably connected with the other side of the measuring platform and slidably abuts against the transverse position calibration mechanism and the measured gear.
The tooth pitch measuring mechanism further comprises a measuring support, the tooth pitch measuring mechanism is connected with the measuring platform in a sliding mode through the lower end of the measuring support, and the middle of the fixed measuring claw is fixedly connected with the upper end of the measuring support.
The device comprises a measuring platform, and is characterized by further comprising a guide rail, wherein the guide rail is arranged above the measuring platform, and the lower end of the measuring support is connected with the guide rail in a sliding manner.
The lower end of the measuring support is connected with the guide rail in a sliding mode through the base, and the crank is installed on the base and is in driving connection with the measuring support.
Vertical adjustment mechanism includes rotation axis, screw sleeve, screw rod, the middle part of fixed graduated flask is equipped with the screw, the screw rod is passed from bottom to top the screw with the lower extreme phase-match threaded connection of screw sleeve, the middle part of activity graduated flask is passed through the rotation axis with the upper end of screw sleeve is rotated and is connected.
The transverse position calibration mechanism further comprises a fixing support, the second dial indicator is installed on the measuring platform through the fixing support, the measuring head of the second dial indicator faces the tooth pitch measuring mechanism, and the tooth pitch measuring mechanism slides to be close to the measuring head of the second dial indicator.
It should be noted that:
the foregoing references to "first and second …" do not denote any particular quantity or order, but rather are used to distinguish one name from another.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The following illustrates the advantages or principles of the invention:
1. the gear to be measured is vertically and rotatably arranged at the upper end of the rotating shaft bracket, so that the gear to be measured vertically rotates along the rotating center at the upper end of the rotating shaft bracket, the fixed measuring claw and the movable measuring claw are arranged on the tooth pitch measuring mechanism, the heights of the fixed measuring claw and the movable measuring claw can be adjusted, the tooth pitch measuring mechanism can transversely and horizontally move on the measuring platform, and the transverse horizontal position of the tooth pitch measuring mechanism can be accurately positioned through the second dial indicator; the vertical axis of the rotation center of the gear to be measured is taken as a central line, two sides of the gear to be measured positioned at two sides of the rotating shaft support comprise a tooth pitch measuring side and a constant force applying side, the fixed measuring claw and the movable measuring claw measure the tooth pitch between two adjacent teeth of the gear to be measured at the tooth pitch measuring side, and when the tooth pitch is measured, a measuring force weight is hoisted on the upper end teeth of the constant force applying side through a hanging rope, so that a constant measuring force is applied when the tooth pitch is measured;
the gear pitch deviation measuring method is characterized in that a constant measuring force is applied to the constant force applying side of the measured gear, so that the measurement of the measured gear pitch is not easily influenced by environment and operators, and the gear pitch deviation of the measured gear is accurately measured.
2. The height adjustment of the fixed measuring jaw and the movable measuring jaw is realized through the height adjustment of the measuring support and the vertical adjusting mechanism respectively, the structure is simple, and the operation is convenient.
3. The distance between the movable measuring jaw and the fixed measuring jaw is adjusted through forward and reverse rotation of the screw rod, and adjustment is convenient.
4. The transverse horizontal movement of the tooth pitch measuring mechanism is realized through the rotation of the crank, so that the transverse horizontal movement and the positioning of the tooth pitch measuring mechanism are more accurate.
5. The gear pitch deviation measuring tool comprises a rotating shaft support, a constant force applying mechanism, a pitch measuring mechanism and a transverse position calibration mechanism, wherein a measured gear is vertically and rotatably arranged at the upper end of the rotating shaft support and provides a fixed rotating shaft core for the measured gear, the position of a fixed measuring claw can be ensured to be unchanged during operation, two sides of the measured gear positioned at two sides of the rotating shaft support comprise a pitch measuring side and a constant force applying side, the fixed measuring claw and a movable measuring claw measure the pitch between two adjacent teeth of the measured gear at the pitch measuring side, during pitch measurement, a measuring weight is hoisted on the upper end teeth at the constant force applying side through a hanging rope, a constant measuring force is applied during pitch measurement, so that the measurement of the pitch of the measured gear is not easily influenced by environment and operators, and the pitch deviation of the measured gear is accurately measured; the transverse position calibration mechanism comprises a second dial indicator, and the transverse position of the tooth pitch measurement mechanism is calibrated by the dial indicator, so that the use is convenient, and the positioning is accurate; the tooth pitch measuring mechanism comprises a fixed measuring jaw, a movable measuring jaw, a first kilo-minute meter and a vertical adjusting mechanism, the tooth pitch between two adjacent teeth of the measured gear is measured by using the distance between the fixed measuring jaw and the movable measuring jaw, the operation is convenient, the vertical adjusting mechanism is used for adjusting the initial distance between the fixed measuring jaw and the movable measuring jaw, and when the tooth pitch measuring mechanism is used, if the distance between the fixed measuring jaw and the movable measuring jaw is reduced or enlarged, the fixed measuring jaw does not move, so that the movable measuring jaw rotates by taking the upper end of the vertical adjusting mechanism as a rotation center, the distance between the fixed measuring end and the movable measuring end is enlarged or reduced, the measuring head of the first kilo-minute meter is further extended or shortened, and the tooth pitch deviation value of the measured gear is obtained; the gear pitch deviation measuring tool can ensure that the measurement of the measured gear pitch is not easily influenced by environment and operators, and the gear pitch deviation of the measured gear is accurately measured.
6. The measuring bracket is arranged, so that the height of the fixed measuring jaw and the height of the movable measuring jaw can be conveniently adjusted.
7. The guide rail is arranged on the measuring platform, so that the tooth pitch measuring mechanism can slide more smoothly relative to the measuring platform.
8. The invention adopts the crank to drive the measuring bracket of the pitch measuring mechanism to slide, is convenient to use and ensures that the transverse horizontal movement and positioning of the pitch measuring mechanism are more accurate.
9. Vertical adjustment mechanism includes rotation axis, screw sleeve, screw rod, and vertical adjustment mechanism's altitude mixture control is realized through the forward rotation and the counter rotation of screw rod and screw sleeve, simple structure, convenient operation.
10. The second dial indicator is arranged on the measuring platform through the fixing support, so that the second dial indicator and the tooth pitch measuring mechanism can be conveniently adjusted in an approaching mode, and the use is convenient.
Drawings
FIG. 1 is a front view of a gear tooth pitch deviation measuring gauge according to an embodiment of the present invention.
Description of reference numerals:
10. the measuring device comprises a rotating shaft bracket, 20, a measured gear, 21, a pitch measuring side, 22, a constant force applying side, 30, a constant force applying mechanism, 31, a hanging rope, 32, a measuring force weight, 40, a pitch measuring mechanism, 41, a fixed measuring jaw, 411, a fixed measuring head, 412, a fixed measuring end, 42, a movable measuring jaw, 421, a movable measuring head, 422, a movable measuring end, 43, a first dial indicator, 44, a vertical adjusting mechanism, 441, a rotating shaft, 442, a screw sleeve, 443, a screw rod, 45, a measuring bracket, 50, a transverse position calibrating mechanism, 51, a second dial indicator, 52, a fixed bracket, 60, a measuring platform, 71, a guide rail, 72, a base, 73 and a crank.
Detailed Description
The following provides a detailed description of embodiments of the invention.
A gear pitch deviation measurement method, comprising the steps of:
(1) vertically and rotatably installing the measured gear 20 at the upper end of the rotating shaft bracket 10, and adjusting the heights of a fixed measuring claw 41 and a movable measuring claw 42 of the tooth pitch measuring mechanism 40 to enable a measured reference tooth of the measured gear 20 to be positioned between the fixed measuring claw 41 and the movable measuring claw 42;
(2) the measuring force weight 32 is hung on the constant force application side 22 of the measured gear 20 through a hanging rope 31, and then the tooth pitch measuring mechanism 40 is slid to approach the measured gear 20, so that the movable measuring head 421 of the movable measuring jaw 42 and the fixed measuring head 411 of the fixed measuring jaw 41 are in close contact with the high and middle positions of the tooth profile on the same side of the measured reference tooth and the tooth adjacent to the measured reference tooth;
(3) approaching a measuring head of the second dial indicator 51 to the tooth pitch measuring mechanism 40, and acquiring a compression reading of the second dial indicator 51 so as to obtain a transverse reference value of the transverse position of the tooth pitch measuring mechanism 40;
(4) adjusting the first dial indicator 43 to compress the measuring head of the first dial indicator 43 by a total range of one third to two thirds, enabling the measuring head of the first dial indicator 43 to approach the movable measuring end 422 of the movable measuring claw 42, and collecting the compression reading of the first dial indicator 43 to obtain the reference tooth pitch value of the measured reference tooth;
(5) a sliding pitch measuring mechanism 40 which slides in a direction away from the measured gear 20, and rotates the angle of one tooth of the measured gear 20 when the movable gauge head 421 of the movable measuring jaw 42 and the fixed gauge head 411 of the fixed measuring jaw 41 are both away from the addendum circle of the measured reference tooth, so that the measured first tooth of the measured gear 20 is positioned between the fixed measuring jaw 41 and the movable measuring jaw 42; then, the tooth pitch measuring mechanism 40 is slid to approach the measured gear 20 until the tooth pitch measuring mechanism 40 approaches and contacts a measuring head of the second dial indicator 51, and the compression reading of the second dial indicator 51 is consistent with the transverse reference value; then, a measuring force weight 32 is hoisted on the constant force application side 22 of the measured gear 20 through a hanging rope 31, and the compression reading of the first dial gauge 43 is collected, so that the first tooth pitch value of the measured first tooth is obtained;
(6) comparing the first tooth pitch measurement value with the reference tooth pitch measurement value to obtain a tooth pitch deviation value of the measured first tooth and the measured reference tooth;
(7) and (5) repeating the steps 5 to 6, and measuring the tooth pitch deviation value of each tooth of the measured gear 20.
According to the invention, a gear 20 to be measured is vertically and rotatably arranged at the upper end of a rotating shaft bracket 10, so that the gear 20 to be measured vertically rotates along the rotating center at the upper end of the rotating shaft bracket 10, a fixed measuring jaw 41 and a movable measuring jaw 42 are arranged on a tooth pitch measuring mechanism 40, the heights of the fixed measuring jaw 41 and the movable measuring jaw 42 can be adjusted, the tooth pitch measuring mechanism 40 can transversely and horizontally move on a measuring platform 60, and the transverse horizontal position of the tooth pitch measuring mechanism 40 can be accurately positioned through a second dial indicator 51; taking the vertical axis of the rotation center of the measured gear 20 as a central line, two sides of the measured gear 20 positioned at two sides of the rotating shaft support 10 comprise a tooth pitch measuring side 21 and a constant force applying side 22, wherein the fixed measuring claw 41 and the movable measuring claw 42 measure the tooth pitch between two adjacent teeth of the measured gear 20 on the tooth pitch measuring side 21, and when the tooth pitch is measured, a measuring force weight 32 is hoisted on the upper end teeth of the constant force applying side 22 through a hanging rope 31, so that a constant measuring force is applied when the tooth pitch is measured;
the method for measuring the gear pitch deviation applies a constant measuring force on the constant force applying side 22 of the measured gear 20, so that the measurement of the gear pitch of the measured gear 20 is not easily influenced by environment and operators, and the precise measurement of the gear pitch deviation of the measured gear 20 is realized.
Step 1 also comprises the following steps:
the vertical height of the measuring bracket 45 is adjusted to realize the height adjustment of the fixed measuring jaw 41;
the height of the vertical adjusting mechanism 44 is adjusted to realize the height adjustment of the movable measuring jaw 42, so that the measured reference tooth of the measured gear 20 is positioned between the fixed measuring jaw 41 and the movable measuring jaw 42.
The height adjustment of the fixed measuring jaw 41 and the movable measuring jaw 42 is realized through the height adjustment of the measuring support 45 and the vertical adjusting mechanism 44 respectively, and the device is simple in structure and convenient to operate.
Adjusting the height of the vertical adjustment mechanism 44 includes the steps of:
the screw 443 is rotated forward or backward to reduce or enlarge the distance between the boss 442 and the fixed jaw 41, thereby reducing or enlarging the distance between the movable jaw 42 and the fixed jaw 41, so that the measured reference tooth of the measured gear 20 is located between the fixed jaw 41 and the movable jaw 42.
The distance between the movable measuring jaw 42 and the fixed measuring jaw 41 is adjusted by forward and reverse rotation of the screw 443, and adjustment is facilitated.
The step 2 also comprises the following steps:
the crank handle 73 is rotated forward or backward to slide the pitch measuring mechanism 40 toward or away from the gear 20 to be measured.
The transverse horizontal movement of the pitch measuring mechanism 40 is realized by the rotation of the crank handle 73, so that the transverse horizontal movement of the pitch measuring mechanism 40 is positioned more accurately.
As shown in fig. 1, a gear pitch deviation measuring gauge includes:
the gear testing device comprises a rotating shaft bracket 10, a gear to be tested 20, a constant force applying side 22 and a gear pitch measuring side 21, wherein the rotating shaft bracket 10 is used for mounting the gear to be tested 20, the gear to be tested 20 is vertically and rotatably mounted at the upper end of the rotating shaft bracket 10, the gear to be tested 20 comprises the pitch measuring side 21 and the constant force applying side 22, and the pitch measuring side 21 and the constant force applying side 22 are respectively positioned at two opposite sides of the;
the constant force applying mechanism 30 comprises a hanging rope 31 and a measuring force weight 32, wherein the measuring force weight 32 is hung on the constant force applying side 22 of the measured gear 20 through the hanging rope 31 and is used for applying a constant measuring force to the constant force applying side 22 of the measured gear 20;
the tooth pitch measuring mechanism 40 is used for measuring the tooth pitch between two adjacent teeth of the measured gear 20; the tooth pitch measuring mechanism 40 comprises a fixed measuring jaw 41, a movable measuring jaw 42, a first dial gauge 43 and a vertical adjusting mechanism 44, two ends of the fixed measuring jaw 41 respectively comprise a fixed measuring head 411 and a fixed measuring end 412, two ends of the movable measuring jaw 42 respectively comprise a movable measuring head 421 and a movable measuring end 422, the lower end of the vertical adjusting mechanism 44 is vertically connected with the middle part of the fixed measuring jaw 41 in a sliding manner, the middle part of the movable measuring jaw 42 is rotatably connected with the upper end of the vertical adjusting mechanism 44, the first dial gauge 43 is installed on the fixed measuring end 412, and a measuring head of the first dial gauge 43 is in close contact with the movable measuring end 422; the fixed measuring head 411 and the movable measuring head 421 respectively abut against two adjacent teeth of the gear 20 to be measured, and are used for measuring the tooth pitch of the two adjacent teeth;
the transverse position calibration mechanism 50 comprises a second dial indicator 51, and the second dial indicator 51 is used for calibrating the transverse position of the tooth pitch measuring mechanism 40;
the measuring platform 60 and the transverse position calibration mechanism 50 are installed in the middle of the measuring platform 60, the lower end of the rotating shaft support 10 is installed on one side of the measuring platform 60, and the lower end of the pitch measuring mechanism 40 is connected with the other side of the measuring platform 60 in a sliding mode and abuts against the transverse position calibration mechanism 50 and the measured gear 20 in a sliding mode.
The gear pitch deviation measuring tool comprises a rotating shaft support 10, a constant force applying mechanism 30, a pitch measuring mechanism 40 and a transverse position calibration mechanism 50, wherein a measured gear 20 is vertically and rotatably arranged at the upper end of the rotating shaft support 10 to provide a fixed rotating shaft core for the measured gear 20, the position of a fixed measuring claw 41 can be ensured to be unchanged during operation, two sides of the measured gear 20 positioned at two sides of the rotating shaft support 10 comprise a pitch measuring side 21 and a constant force applying side 22, the fixed measuring claw 41 and a movable measuring claw 42 measure the pitch between two adjacent teeth of the measured gear 20 at the pitch measuring side 21, when the pitch is measured, a measuring force weight 32 is hoisted on the upper end tooth of the constant force applying side 22 through a hanging rope 31, so that a constant measuring force is applied during tooth pitch measurement, the measurement of the tooth pitch of the measured gear 20 is not easily influenced by environment and operators, and the accurate measurement of the tooth pitch deviation of the measured gear 20 is realized; the transverse position calibration mechanism 50 comprises a second dial indicator 51, and the transverse position of the tooth pitch measuring mechanism 40 is calibrated by the dial indicator, so that the use is convenient, and the positioning is accurate; the tooth pitch measuring mechanism 40 comprises a fixed measuring jaw 41, a movable measuring jaw 42, a first dial indicator 43 and a vertical adjusting mechanism 44, the tooth pitch between two adjacent teeth of the measured gear 20 is measured by using the distance between the fixed measuring jaw 41 and the movable measuring jaw 42, the operation is convenient, the vertical adjusting mechanism 44 is used for adjusting the initial distance between the fixed measuring jaw 41 and the movable measuring jaw 42, and when the gear tooth pitch measuring mechanism is used, if the distance between the fixed measuring head 411 and the movable measuring head 421 is reduced or enlarged, the fixed measuring jaw 41 does not move, so that the movable measuring jaw 42 rotates by taking the upper end of the vertical adjusting mechanism 44 as a rotation center, the distance between the fixed measuring end 412 and the movable measuring end 422 is enlarged or reduced, and the measuring head of the first dial indicator 43 is extended or shortened, and the tooth pitch deviation value of the measured gear 20 is obtained; the gear pitch deviation measuring tool can ensure that the measurement of the pitch of the measured gear 20 is not easily influenced by environment and operators, and the pitch deviation of the measured gear 20 is accurately measured.
Wherein, tooth pitch measuring mechanism 40 still includes measuring support 45, and tooth pitch measuring mechanism 40 is through the lower extreme and the measuring platform 60 sliding connection of measuring support 45, the middle part of fixed graduated flask 41 and the upper end fixed connection of measuring support 45. The height adjustment of the fixed measuring jaw 41 and the movable measuring jaw 42 is facilitated by the arrangement of the measuring bracket 45.
The gear pitch deviation measuring tool further comprises a guide rail 71, a base 72 and a crank handle 73, wherein the guide rail 71 is installed above the measuring platform 60, and the lower end of the measuring support 45 is in sliding connection with the guide rail 71 and the measuring platform 60. The guide rail 71 is provided on the measuring platform 60 to facilitate the sliding of the pitch measuring mechanism 40 with respect to the measuring platform 60.
The lower end of the measuring bracket 45 is slidably connected with the guide rail 71 through a base 72, and a crank 73 is mounted on the base 72 and is drivingly connected with the measuring bracket 45. The crank handle 73 is adopted to drive the measuring bracket 45 of the tooth pitch measuring mechanism 40 to slide, so that the use is convenient, and the transverse horizontal movement and positioning of the tooth pitch measuring mechanism 40 are more accurate.
The vertical adjusting mechanism 44 comprises a rotating shaft 441, a screw sleeve 442 and a screw 443, a screw hole is formed in the middle of the fixed measuring jaw 41, the screw 443 penetrates through the screw hole from bottom to top to be in threaded connection with the lower end of the screw sleeve 442 in a matching manner, and the middle of the movable measuring jaw 42 is rotatably connected with the upper end of the screw sleeve 442 through the rotating shaft 441. The height adjustment of the vertical adjusting mechanism 44 is realized by forward rotation and reverse rotation of the screw 443 and the screw sleeve 442, and the structure is simple and the operation is convenient.
The transverse position calibration mechanism 50 further comprises a fixing support 52, the second dial indicator 51 is mounted on the measuring platform 60 through the fixing support 52, a measuring head of the second dial indicator 51 faces the tooth pitch measuring mechanism 40, and the tooth pitch measuring mechanism 40 slides to be close to the measuring head of the second dial indicator 51. The second dial indicator 51 is mounted on the measuring platform 60 through the fixing support 52, so that the second dial indicator 51 and the tooth pitch measuring mechanism 40 can be conveniently adjusted in an approaching mode, and the use is convenient.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (10)
1. A gear pitch deviation measurement method is characterized by comprising the following steps:
(1) vertically and rotatably mounting the measured gear at the upper end of the rotating shaft bracket, and adjusting the heights of a fixed measuring jaw and a movable measuring jaw of the tooth pitch measuring mechanism to enable a measured reference tooth of the measured gear to be positioned between the fixed measuring jaw and the movable measuring jaw;
(2) the measuring force weight is hung on the constant force application side of the measured gear through a hanging rope, and then the tooth pitch measuring mechanism is slid to approach the measured gear, so that the movable measuring head of the movable measuring jaw and the fixed measuring head of the fixed measuring jaw are in close contact with the middle-high position of the tooth profile on the same side of the measured reference tooth and the tooth profile adjacent to the measured reference tooth;
(3) a measuring head of the second dial indicator is close to the tooth pitch measuring mechanism, and the compression reading of the second dial indicator is collected, so that the transverse reference value of the transverse position of the tooth pitch measuring mechanism is obtained;
(4) adjusting the first dial indicator to enable a measuring head of the first dial indicator to compress the total measuring range of one third to two thirds, enabling the measuring head of the first dial indicator to be close to the movable measuring end of the movable measuring claw, and collecting the compression reading of the first dial indicator so as to obtain the reference tooth pitch value of the measured reference tooth;
(5) the sliding tooth pitch measuring mechanism is used for enabling the sliding tooth pitch measuring mechanism to slide towards the direction far away from the measured gear, and when the movable measuring head of the movable measuring jaw and the fixed measuring head of the fixed measuring jaw are both away from the addendum circle of the measured reference tooth, the angle of one tooth of the measured gear is rotated, so that the measured first tooth of the measured gear is located between the fixed measuring jaw and the movable measuring jaw; then, the tooth pitch measuring mechanism is slid to approach the measured gear until the tooth pitch measuring mechanism approaches and contacts a measuring head of the second dial indicator, and the reading of the compression amount of the second dial indicator is consistent with the transverse reference value; then hoisting a measuring force weight on the constant force application side of the measured gear through a hanging rope, and collecting the compression reading of the first dial gauge so as to obtain a first tooth pitch value of the measured first tooth;
(6) comparing the first tooth pitch measurement value with the reference tooth pitch measurement value to obtain a tooth pitch deviation value of the measured first tooth and the measured reference tooth;
(7) and (6) repeating the steps 5 to 6, and measuring the tooth pitch deviation value of each tooth of the gear to be measured.
2. The gear pitch deviation measuring method according to claim 1, wherein said step 1 further comprises the steps of:
adjusting the vertical height of the measuring support to realize height adjustment of the fixed measuring jaw;
and adjusting the height of the vertical adjusting mechanism to realize the height adjustment of the movable measuring jaw, so that the measured reference tooth of the measured gear is positioned between the fixed measuring jaw and the movable measuring jaw.
3. The gear pitch deviation measuring method of claim 2, wherein said adjusting the height of the vertical adjustment mechanism comprises the steps of:
and rotating the screw rod forwards or reversely to reduce or enlarge the distance between the screw sleeve and the fixed measuring jaw, thereby reducing or enlarging the distance between the movable measuring jaw and the fixed measuring jaw, and enabling the measured reference tooth of the measured gear to be positioned between the fixed measuring jaw and the movable measuring jaw.
4. The gear pitch deviation measuring method according to any one of claims 1 to 3, wherein said step 2 further comprises the steps of:
the crank is rotated forward or backward, so that the tooth pitch measuring mechanism slides towards or away from the measured gear.
5. A gear pitch deviation measuring gauge, comprising:
the gear to be measured comprises a tooth pitch measuring side and a constant force applying side, and the tooth pitch measuring side and the constant force applying side are respectively positioned on two opposite sides of the rotating shaft support;
the constant force applying mechanism comprises a hanging rope and a measuring force weight, wherein the measuring force weight is hung on the constant force applying side of the gear to be measured through the hanging rope and is used for applying a constant measuring force to the constant force applying side of the gear to be measured;
the tooth pitch measuring mechanism is used for measuring the tooth pitch between two adjacent teeth of the measured gear; the tooth pitch measuring mechanism comprises a fixed measuring jaw, a movable measuring jaw, a first dial indicator and a vertical adjusting mechanism, wherein two ends of the fixed measuring jaw respectively comprise a fixed measuring head and a fixed measuring end, two ends of the movable measuring jaw respectively comprise a movable measuring head and a movable measuring end, the lower end of the vertical adjusting mechanism is vertically and slidably connected with the middle part of the fixed measuring jaw, the middle part of the movable measuring jaw is rotatably connected with the upper end of the vertical adjusting mechanism, the first dial indicator is installed on the fixed measuring end, and a measuring head of the first dial indicator is in close contact with the movable measuring end; the fixed measuring head and the movable measuring head respectively abut against two adjacent teeth of the gear to be measured and are used for measuring the tooth pitch of the two adjacent teeth;
the transverse position calibration mechanism comprises a second dial indicator, and the second dial indicator is used for calibrating the transverse position of the tooth pitch measuring mechanism;
the measuring platform is characterized in that the transverse position calibration mechanism is arranged in the middle of the measuring platform, the lower end of the rotating shaft support is arranged on one side of the measuring platform, and the lower end of the tooth pitch measuring mechanism is slidably connected with the other side of the measuring platform and slidably abuts against the transverse position calibration mechanism and the measured gear.
6. The gear pitch deviation measuring gauge according to claim 5, wherein the pitch measuring mechanism further comprises a measuring bracket, the pitch measuring mechanism is slidably connected with the measuring platform through a lower end of the measuring bracket, and a middle portion of the fixed measuring jaw is fixedly connected with an upper end of the measuring bracket.
7. The gear pitch deviation measuring gauge according to claim 6, further comprising a guide rail mounted above the measuring platform, wherein the lower end of the measuring bracket is slidably connected to the measuring platform by the guide rail.
8. The gear pitch deviation measuring gauge according to claim 7, further comprising a base, a crank, wherein the lower end of the measuring bracket is slidably connected to the guide rail through the base, and the crank is mounted on the base and drivingly connected to the measuring bracket.
9. The gear pitch deviation measuring tool according to any one of claims 5 to 8, wherein the vertical adjusting mechanism comprises a rotating shaft, a screw sleeve and a screw rod, a screw hole is formed in the middle of the fixed measuring jaw, the screw rod penetrates through the screw hole from bottom to top to be connected with the lower end of the screw sleeve in a matched threaded manner, and the middle of the movable measuring jaw is rotatably connected with the upper end of the screw sleeve through the rotating shaft.
10. The gear pitch deviation measuring gauge according to any one of claims 5 to 8, wherein the lateral position calibration mechanism further comprises a fixing bracket, the second dial indicator is mounted on the measuring platform through the fixing bracket, a measuring head of the second dial indicator faces the pitch measurement mechanism, and the pitch measurement mechanism slides close to the measuring head of the second dial indicator.
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| CN201910863581.4A CN110940254B (en) | 2019-09-12 | 2019-09-12 | Gear pitch deviation measuring method and measuring tool thereof |
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| CN201910863581.4A CN110940254B (en) | 2019-09-12 | 2019-09-12 | Gear pitch deviation measuring method and measuring tool thereof |
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| CN110940254B true CN110940254B (en) | 2021-06-04 |
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| CN111780647B (en) * | 2020-07-17 | 2022-02-25 | 辽宁科技学院 | Gear pitch detection equipment |
| CN116734706B (en) * | 2023-08-08 | 2023-10-27 | 长春汽车工业高等专科学校 | Gauge for measuring angle of combined teeth of synchronizer |
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