CN208075784U - Measure the detection device of gear-pair backlash - Google Patents
Measure the detection device of gear-pair backlash Download PDFInfo
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- CN208075784U CN208075784U CN201820262782.XU CN201820262782U CN208075784U CN 208075784 U CN208075784 U CN 208075784U CN 201820262782 U CN201820262782 U CN 201820262782U CN 208075784 U CN208075784 U CN 208075784U
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Abstract
The detection device for measuring gear-pair backlash, belongs to gear testing field.Pedestal is connect with support base, and auto-tensioning shafting is installed in support base, cylinder push-rod is inserted into support base, holder and square rail are installed on pedestal, holder is connect by rotary shaft with lever, and lever is sleeved on auto-tensioning shafting pull rod, and cylinder push-rod is connect with lever；Lower skateboard is slidably fitted on square rail, lower skateboard is connect by V-type rail with upper slide；Lower skateboard is connect by nut seat with mobile screw, and mobile screw is connect with ball-screw, and ball-screw is connect by bearing block with motor mounting plate, and motor mounting plate is connect with pedestal and stepper motor, and stepper motor is connect by tape handler with ball-screw；Axle sleeve one is connect with upper slide, and one interpolation of axle sleeve enters main shaft and ball retainer one is housed therebetween, and main shaft takes turns axis connection with tested gear one, and axle sleeve one is connect by female connector and spindle motor with main shaft.The utility model is for detecting gear-pair backlash.
Description
Technical field
The utility model is related to a kind of detection devices measuring gear-pair backlash, belong to gear testing field.
Background technology
Gear backlash refers to the distance of the inactive face along normal direction of a pair of engaged gears, a pair of intermeshing tooth
Wheel must there are backlash, to compensate gear due to manufacturing the flexible deformation when accuracy tolerance and driven load with installation
With the deformation due to being affected by temperature, and a certain amount of lubricating oil can be stored, to improve the lubricating status of gear surface.But gear
Sideshake it is excessive, can increase noise caused by gear drive, increase the friction between gear, influence the service life of gear,
So the sideshake of usually gear is the smaller the better in the case where ensuring normal use, it is according to gear institute requirement during fabrication
Accuracy class set.Currently, commonly use pressing lead wires method or signing method to detect the sideshake of gear pair, pressing lead wires method refer to
On the flank of tooth of the facewidth, 2~4 galvanized wires are placed in parallel, for galvanized wire diameter no more than 4 times of minimum clearance, rotate gear squeezes lead
Silk, the thickness that galvanized wire is extruded rear thinnest part is backlash values.Signing method is to fix a gear when measuring, another
Clamping bar is loaded onto on one gear, is measured the swing angle of the gear equipped with clamping bar, is read on amesdial or dial gauge
Number is poor.But above two method measurement difficulty is big, and measurement efficiency is not high.With industry gradual development and science and technology into
Step, industrial automation is bound to gradually substitute simple manual operation, improve labor efficiency, and traditional detection device will necessarily be by
The detection device for measuring gear-pair backlash is substituted.
Utility model content
The purpose of this utility model is to provide a kind of detection device measuring gear-pair backlash, to fill up at present without measurement tooth
The blank of the detection device of wheel set sideshake.
The purpose of this utility model is achieved through the following technical solutions：
The detection device of gear-pair backlash is measured, composition includes：Cylinder, support base, lever, holder, upper slide, downslide
Plate, ball-screw, a pair of of square rail, a pair of of tension spring, bearing block, motor mounting plate, stepper motor, pedestal, nut seat, movement
Screw, one group of V-type rail, auto-tensioning shafting, tape handler, main shaft system, grating scale, linear grating sensor and support
Frame；
The main shaft system includes shaft coupling A, main shaft, axle sleeve one, female connector, spindle motor, shaft coupling B, ball retainer
One and retention tab one；The left end of plane is connect with support base on the pedestal, and the right end of plane has on the support base
Through-hole one, is equipped with auto-tensioning shafting in the through-hole one, and the left end of plane is connect with cylinder on pedestal, a left side for support base
Holding has through-hole two, the push rod for the cylinder that insertion is stated in the through-hole two, and the right end of plane is equipped with holder on pedestal,
The holder is connect by rotary shaft with lever, and there is the lever right end through-hole, the through-hole of lever right end to be sleeved on institute
On the pull rod for the auto-tensioning shafting stated, the push rod lower end of cylinder is connected with lever upper surface left end；The right side of plane on pedestal
End is equipped with a pair of of square rail, and lower skateboard, the lower skateboard and one group of V are slidably fitted on a pair of of square rail
Type guide rail connects, and described one group of V-type rail is connect with upper slide, and a pair of of tension spring is equipped between upper slide and lower skateboard；Under
The lower plane of slide plate 26 is connect with nut seat, and the nut seat is connect with mobile screw, the mobile screw and ball wire
Thick stick is coordinated by external screw thread, and the right end of the ball-screw and the inner ring of bearing block are interference fitted, the bearing block and electricity
Machine mounting plate upper end connects, and the motor mounting plate is connect with pedestal, and motor mounting plate lower end is connect with stepper motor, described
The motor shaft of stepper motor pass through tape handler and ball-screw right end and be sequentially connected；
One periphery of axle sleeve is equipped with shoulder, is connected on the left of the shoulder of axle sleeve one and the upper surface of upper slide, on
Coaxial through-hole is equipped on the left of slide plate and lower skateboard upper surface, one lower end of axle sleeve passes through on the left of upper slide and lower skateboard upper surface
Through-hole, the axle sleeve one is interior inserted with main shaft, and ball retainer one, axle sleeve one are equipped between the main shaft and axle sleeve one
Upper surface is bonded with retention tab one, and main shaft periphery upper end is equipped with the shaft shoulder, under the shaft shoulder described in the retention tab one and main shaft
Surface is bonded, the upper end of main shaft by the wheel axis connection of shaft coupling A and tested gear one, the lower face of axle sleeve one and female connector it is upper
End face connects, and the female connector lower face is connect with spindle motor, and the motor shaft of the spindle motor passes through shaft coupling B and master
Axis lower end connects, and the grating scale is fixed on one long lateral surface of upper slide, the linear grating sensor and grating scale
Corresponding setting is simultaneously fixed on supporting rack, and the supporting rack is fixed on the base plane.
The advantageous effect of the utility model compared with the existing technology is：
1.1, the detection device of the measurement gear-pair backlash of the utility model drives band by controlling stepper motor rotation
Transmission mechanism is driven, to realize moving left and right for upper and lower slide plate.It controls upper and lower slide plate to be moved to the left, until linear grating passes
After sensor records upper slide movement 2mm, stop the movement of upper and lower slide plate, control spindle motor rotation so that driving gear band it is dynamic from
Moving gear rotation (i.e. tested gear one, which drives, is tested the rotation of gear two), so that rotated with the pull rod of driven gear cooperation,
When the circular raster sensor that pull rod lower end is installed collects zero, stop spindle motor rotation.At this point it is possible to ensure round light
Gate sensor reaches zero, also ensures that two tested gear engagement states are single-contact.Driving spindle motor is clockwise again
It turns an angle so that tested gear pair (two tested gears) mutually rotates one week, record Circular gratings numerical value δ1.It drives again
Spindle motor rotates counterclockwise identical angle, record Circular gratings numerical value δ2.The difference of the recorded numerical value of Circular gratings is twice
The gap of tested gear pair.The utility model greatly reduces human error caused by manual operation, not only increases inspection
Efficiency is surveyed, and increases the accuracy of detection.Linear grating sensor measurement upper slide move 2mm, by upper and lower slide plate it
Between tension spring provide dynamometry.
2. the detection device of the measurement gear-pair backlash of the utility model, by the action of the flexible and lever of cylinder,
The tensioning for realizing auto-tensioning shafting is stretched out by solenoid valve control cylinder, makes the thrust of cylinder in the left end of lever
On, the right end of lever moves up so that compression spring is shunk, and the pull rod being connect with pressure cap moves up, so that pull rod is oblique
Face small end (i.e. the inclined-plane small end of the inverted round table body of pull bar termination) is contacted with rubber ring so that tested to be between gear two and axis
Clearance fit.It is shunk by solenoid valve control cylinder, compression spring reinstatement state so that pull rod moves down, so that pull rod
Inclined-plane big end (i.e. the inclined-plane big end of the inverted round table body of pull bar termination) contacted with rubber ring, rubber ring due to flexible deformation,
So that excircle dimension becomes larger, so that tested is interference fit between gear two and installation axle.The utility model can be fine
The tested gap between gear and installation axle of elimination, and can ensure it is tested between gear and installation axle without relative motion,
Simultaneously convenient for the installation and dismounting of tested gear, detection efficiency is improved.
3. the detection device of the measurement gear-pair backlash of the utility model, Circular gratings sensing used in the utility model
Device, precision can reach 10 μm/m.Compared with pressing lead wires method or signing method, accuracy of detection is greatly increased.
Description of the drawings
Fig. 1 is the main structure diagram of the utility model；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the partial enlarged view of Fig. 1；
Fig. 4 is the main structure diagram of the auto-tensioning shafting of the utility model；
Fig. 5 is the main structure diagram of the main shaft system of the utility model；
Fig. 6 is partial enlarged view at the A of Fig. 4；
Fig. 7 is partial enlarged view at the B of Fig. 4；
Fig. 8 is partial enlarged view at the C of Fig. 5；
Fig. 9 is partial enlarged view at the D of Fig. 2.
Parts title and label in attached drawing is as follows：
Pull rod 1, rubber ring 2, axle sleeve 23, installation axle 4, cylinder 5, support base 6, lever 7, holder 8, rotary shaft 9, circle light
Gate sensor 10, pressure cap 11, compression spring 12, end cap 13, ball retainer 2 14, retention tab 2 15, tested gear 2 16, wheel shaft
17, shaft coupling A18, main shaft 19, axle sleeve 1, female connector 21, spindle motor 22, shaft coupling B23, ball retainer 1, upper cunning
Plate 25, lower skateboard 26, ball-screw 27, square rail 28, bearing block 29, big belt wheel 30, belt 31, small pulley 32, motor peace
It is loading board 33, stepper motor 34, pedestal 35, nut seat 36, mobile screw 37, V-type rail 38, grating scale 39, retention tab 1, straight
Linear light gate sensor 41, cylinder 42, inverted round estrade 43, supporting rack 44, stop screw 45.
Specific implementation mode
The technical solution of the utility model is further described below in conjunction with the accompanying drawings, however, it is not limited to this, every
Technical solutions of the utility model are modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of protection of the utility model.
Specific implementation mode one：As shown in figs. 1 to 9, present embodiment discloses a kind of detection measuring gear-pair backlash
Device, composition include：Its composition includes：Cylinder 5, support base 6, lever 7, holder 8, upper slide 25, lower skateboard 26, ball wire
Thick stick 27, a pair of of square rail 28, a pair of of tension spring, bearing block 29, motor mounting plate 33, stepper motor 34, pedestal 35, nut seat
36,37, one groups of V-type rails 38, auto-tensioning shafting, tape handler, main shaft system, grating scale 39, linear gratings of mobile screw
Sensor 41 and supporting rack 44；
The main shaft system includes shaft coupling A18, main shaft 19, axle sleeve 1, female connector 21, spindle motor 22, shaft coupling
B23, ball retainer 1 and retention tab 1；The left end (passing through screw) Yu support base 6 of plane connect on the pedestal 35
It connects, the right end of plane has through-hole one on the support base 6, and auto-tensioning shafting, pedestal are equipped in the through-hole one
The left end (passing through screw) of plane is connect with cylinder 5 on 35, and the left end of support base 6 has through-hole two, two interpolation of through-hole
Entering has the push rod of the cylinder 5, and the right end of plane is equipped with holder 8 on pedestal 35, the holder 8 by rotary shaft 9 with
Lever 7 connects, and there is 7 right end of lever through-hole, the through-hole of 7 right end of lever to be sleeved on the drawing of the auto-tensioning shafting
On bar 1, the push rod lower end of cylinder 5 is connected with 7 upper surface left end of lever；The right end of plane is equipped with a square shaped on pedestal 35
Guide rail 28 is slidably fitted with lower skateboard 26, the lower skateboard 26 (passing through screw) and one on a pair of of square rail 28
Group V-type rail 38 connects, and described one group of V-type rail 38 (passing through screw) connect with upper slide 25, upper slide 25 and lower skateboard
A pair of of tension spring is installed between 26；The lower plane of lower skateboard 26 is connect with nut seat 36, the nut seat 36 and mobile screw
37 (passing through screw) connect, and the mobile screw 37 is coordinated with ball-screw 27 by external screw thread, the ball-screw 27
The inner ring of right end and bearing block 29 be interference fitted, the bearing block 29 is connect with 33 upper end of motor mounting plate, the electricity
Machine mounting plate 33 is connect with pedestal 35 (passing through screw), and 33 lower end of motor mounting plate is connect with stepper motor 34 (passing through screw),
The motor shaft of the stepper motor 34 is sequentially connected by tape handler and 27 right end of ball-screw；
One 20 periphery of axle sleeve is equipped with shoulder, the shoulder of axle sleeve 1 and the upper surface left side of upper slide 25
(passing through screw) connects, and coaxial through-hole is equipped on the left of upper slide 25 and 26 upper surface of lower skateboard, and one 20 lower end of axle sleeve passes through upper
Through-hole on the left of 26 upper surface of slide plate 25 and lower skateboard, inserted with main shaft 19 in the axle sleeve 1, the main shaft 19 with
Ball retainer 1 is installed, one 20 upper surface of axle sleeve is bonded with retention tab 1,19 periphery of main shaft between axle sleeve 1
Upper end is equipped with the shaft shoulder, and the retention tab 1 is bonded with the shaft shoulder lower surface described in main shaft 19, and the upper end of main shaft 19 passes through connection
Joint A18 is connect with the wheel shaft 17 of tested gear one, and the lower face of axle sleeve 1 connects with the upper surface (passing through screw) of female connector 21
It connects, 21 lower face of female connector (passing through screw) is connect with spindle motor 22, and the motor shaft of the spindle motor 22 passes through
Shaft coupling B23 is connect with 19 lower end of main shaft, and the grating scale 39 is fixed on 25 1 long lateral surface of upper slide, the straight line
The setting corresponding with grating scale 39 of grating sensor 41 is simultaneously fixed on supporting rack 44, and the supporting rack 44 (passing through screw) is solid
It is scheduled on plane on pedestal 35.
In present embodiment, the tape handler includes small pulley 32, big belt wheel 30 and belt 31, the stepping
Small pulley 32 is installed, the right end of ball-screw 27 is equipped with big belt wheel 30, the small pulley 32 on the motor shaft of motor 34
It is connect by belt 31 between the big belt wheel 30.
In present embodiment, the action (stretch out or shrink) of cylinder 5 is realized by solenoid valve control.
Specific implementation mode two：As shown in Fig. 4, Fig. 6 and Fig. 7, present embodiment makes specific implementation mode one
It further illustrates, the auto-tensioning shafting includes：Pull rod 1, rubber ring 2, axle sleeve 23, installation axle 4, circular raster sensor
10, pressure cap 11, compression spring 12, end cap 13, ball retainer 2 14, retention tab 2 15 and multiple stop screws 45；
4 lower end of installation axle is arranged in the through-hole one described in support base 6, and the outer sheath of installation axle 4 is equipped with axle sleeve
23, the periphery of axle sleeve 23 is equipped with shoulder, and the lower end of the axle sleeve 23 is arranged in the through-hole one of support base 6, axle sleeve
23 shoulder fixation is located at plane on support base 6, and installation axle 4 is equipped with central through hole in an axial direction, and 1 lower end of pull rod is worn
The central through hole for going out installation axle 4 is arranged inside support base 6, and 1 lower end of pull rod is connect by external screw thread with pressure cap 11, draws
Compression spring 12 is installed positioned at the upper end of pressure cap 11 on bar 1, the periphery of installation axle 4 is equipped with the shaft shoulder, the retention tab 2 15
It is sleeved in installation axle 4 and is bonded with the upper surface of the shaft shoulder lower face of installation axle and axle sleeve 23, the upper surface of installation axle 4
It is connect with rubber ring 2, the rubber ring 2 is closely sleeved on 1 upper end of pull rod, and steel ball is equipped between installation axle 4 and axle sleeve 23
There are multiple threaded holes, multiple threaded holes to be located at ball retainer two for retainer 2 14,23 periphery of axle sleeve
Above in the of 14, it is threaded with stop screw 45 respectively in multiple threaded holes, 23 lower face of axle sleeve is connect with end cap 13, pull rod 1
Lower end is equipped with circular raster sensor 10, and the outer round surface of rubber ring 2 is interference fitted with tested gear 2 16.
Specific implementation mode three：As shown in figure 4, present embodiment be specific implementation mode one or two is made it is further
Illustrate, the end is from top to bottom constituted by being made as integrated cylinder 42 and inverted round estrade 43, the cylinder
42 outer diameter is more than the big end outer diameter of inverted round estrade 43.
Claims (3)
1. a kind of detection device measuring gear-pair backlash, it is characterised in that：Its composition includes：Cylinder (5), support base (6), thick stick
Bar (7), holder (8), upper slide (25), lower skateboard (26), ball-screw (27), a pair of of square rail (28), a pair of of tension spring, axis
Bearing (29), motor mounting plate (33), stepper motor (34), pedestal (35), nut seat (36), mobile screw (37), one group of V-type
Guide rail (38), auto-tensioning shafting, tape handler, main shaft system, grating scale (39), linear grating sensor (41) and supporting rack
(44)；
The main shaft system includes shaft coupling A (18), main shaft (19), axle sleeve one (20), female connector (21), spindle motor (22), connection
Joint B (23), ball retainer one (24) and retention tab one (40)；The left end and support base of plane on the pedestal (35)
(6) it connects, the right end of plane has through-hole one on the support base (6), and auto-tensioning axis is equipped in the through-hole one
System, the left end of plane is connect with cylinder (5) on pedestal (35), and the left end of support base (6) is with through-hole two, in the through-hole two
Push rod inserted with the cylinder (5), the right end of plane is equipped with holder (8) on pedestal (35), and the holder (8) passes through
Rotary shaft (9) is connect with lever (7), and there is the lever (7) right end through-hole, the through-hole of lever (7) right end to be sleeved on described
Auto-tensioning shafting pull rod (1) on, the push rod lower end of cylinder (5) is connected with lever (7) upper surface left end；Pedestal (35)
The right end of upper plane is equipped with a pair of of square rail (28), and lower skateboard is slidably fitted on a pair of of square rail (28)
(26), the lower skateboard (26) is connect with one group of V-type rail (38), described one group of V-type rail (38) and upper slide (25)
Connection, a pair of of tension spring is equipped between upper slide (25) and lower skateboard (26)；The lower plane of lower skateboard (26) and nut seat (36)
Connection, the nut seat (36) are connect with mobile screw (37), and the mobile screw (37) passes through with ball-screw (27)
External screw thread coordinates, and the right end of the ball-screw (27) is interference fitted with the inner ring of bearing block (29), the bearing block
(29) it is connect with motor mounting plate (33) upper end, the motor mounting plate (33) is connect with pedestal (35), motor mounting plate
(33) lower end is connect with stepper motor (34), and the motor shaft of the stepper motor (34) passes through tape handler and ball-screw
(27) right end is sequentially connected；
Described axle sleeve one (20) periphery is equipped with shoulder, the shoulder of axle sleeve one (20) and the upper surface left side of upper slide (25)
Coaxial through-hole is equipped on the left of connection, upper slide (25) and lower skateboard (26) upper surface, axle sleeve one (20) lower end passes through upper slide
(25) and the through-hole on the left of lower skateboard (26) upper surface, the axle sleeve one (20) are interior inserted with main shaft (19), the main shaft
(19) ball retainer one (24) is installed between axle sleeve one (20), axle sleeve one (20) upper surface is pasted with retention tab one (40)
It closes, main shaft (19) periphery upper end is equipped with the shaft shoulder, the retention tab one (40) and the shaft shoulder following table face paste described in main shaft (19)
It closes, the upper end of main shaft (19) is connect by shaft coupling A (18) with the wheel shaft (17) of tested gear one, the lower face of axle sleeve one (20)
It is connect with the upper surface of female connector (21), the female connector (21) lower face is connect with spindle motor (22), the spindle motor
(22) motor shaft is connect by shaft coupling B (23) with main shaft (19) lower end, and the grating scale (39) is fixed on upper slide
On (25) one long lateral surfaces, the linear grating sensor (41) setting corresponding with grating scale (39) is simultaneously fixed on supporting rack
(44) on, the supporting rack (44) is fixed on plane on pedestal (35).
2. the detection device according to claim 1 for measuring gear-pair backlash, it is characterised in that：The auto-tensioning axis
System includes：Pull rod (1), rubber ring (2), axle sleeve 23, installation axle (4), circular raster sensor (10), pressure cap (11), compression spring
(12), end cap (13), ball retainer two (14), retention tab two (15) and multiple stop screws (45)；
Described installation axle (4) lower end is arranged in the through-hole one described in support base (6), and the outer sheath of installation axle (4) is equipped with axis
Two (3) are covered, the periphery of axle sleeve two (3) is equipped with shoulder, and the lower end setting of the axle sleeve two (3) is in the logical of support base (6)
In hole one, the shoulder fixation of axle sleeve two (3) is located at plane on support base (6), and installation axle (4) is equipped with central through hole in an axial direction,
Described pull rod (1) lower end is pierced by the central through hole setting of installation axle (4) in support base (6) inside, described pull rod (1) lower end
It is connect with pressure cap (11) by external screw thread, the upper end on pull rod (1) positioned at pressure cap (11) is equipped with compression spring (12), installation axle (4)
Periphery be equipped with the shaft shoulder, the retention tab two (15) is sleeved on the shaft shoulder lower face in installation axle (4) and with installation axle
And the upper surface fitting of axle sleeve two (3), the upper surface of installation axle (4) are connect with rubber ring (2), the rubber ring (2) is tight
It is close to be sleeved on pull rod (1) upper end, ball retainer two (14), the axle sleeve are installed between installation axle (4) and axle sleeve two (3)
There are two (3) peripheries multiple threaded holes, multiple threaded holes to be located above ball retainer two (14), multiple threaded holes
It is inside threaded with stop screw (45) respectively, axle sleeve two (3) lower face is connect with end cap (13), the lower end installation of pull rod (1)
There are circular raster sensor (10), outer round surface and the tested gear two (16) of rubber ring (2) to be interference fitted.
3. the detection device according to claim 1 or 2 for measuring gear-pair backlash, it is characterised in that：The pull rod (1)
Upper end is equipped with end, and the end is from top to bottom constituted by being made as integrated cylinder (42) and inverted round estrade (43),
The outer diameter of the cylinder (42) is more than the big end outer diameter of inverted round estrade (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820262782.XU CN208075784U (en) | 2018-02-22 | 2018-02-22 | Measure the detection device of gear-pair backlash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820262782.XU CN208075784U (en) | 2018-02-22 | 2018-02-22 | Measure the detection device of gear-pair backlash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208075784U true CN208075784U (en) | 2018-11-09 |
Family
ID=64039288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820262782.XU Expired - Fee Related CN208075784U (en) | 2018-02-22 | 2018-02-22 | Measure the detection device of gear-pair backlash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208075784U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470126A (en) * | 2018-12-04 | 2019-03-15 | 北方民族大学 | One kind being based on two-sided meshed gears measuring system |
| CN112013749A (en) * | 2019-05-30 | 2020-12-01 | 北京福田康明斯发动机有限公司 | Gear clearance measuring device |
| CN113310386A (en) * | 2021-05-24 | 2021-08-27 | 江苏惠升管业集团有限公司 | PE tubular product production is with detection device who has automatic function of rectifying shape |
-
2018
- 2018-02-22 CN CN201820262782.XU patent/CN208075784U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470126A (en) * | 2018-12-04 | 2019-03-15 | 北方民族大学 | One kind being based on two-sided meshed gears measuring system |
| CN112013749A (en) * | 2019-05-30 | 2020-12-01 | 北京福田康明斯发动机有限公司 | Gear clearance measuring device |
| CN112013749B (en) * | 2019-05-30 | 2022-02-01 | 北京福田康明斯发动机有限公司 | Gear clearance measuring device |
| CN113310386A (en) * | 2021-05-24 | 2021-08-27 | 江苏惠升管业集团有限公司 | PE tubular product production is with detection device who has automatic function of rectifying shape |
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| GR01 | Patent grant | ||
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Granted publication date: 20181109 Termination date: 20200222 |