CN220153499U - Gear reference circle diameter positioning detection device - Google Patents
Gear reference circle diameter positioning detection device Download PDFInfo
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- CN220153499U CN220153499U CN202321419284.9U CN202321419284U CN220153499U CN 220153499 U CN220153499 U CN 220153499U CN 202321419284 U CN202321419284 U CN 202321419284U CN 220153499 U CN220153499 U CN 220153499U
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- 238000012797 qualification Methods 0.000 abstract description 5
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Abstract
The utility model relates to a gear reference circle diameter positioning detection device, which effectively solves the problems of lower efficiency and low accuracy of the existing gear reference circle diameter detection; the technical scheme for solving the problems comprises the following steps: the detection device can directly finish the detection of the pitch circle diameter of the machined gear on the production line, and the whole detection process does not need to be manually participated, so that the unified standard of the detection process is ensured, the detection work of the pitch circle diameter of the gear is higher in accuracy, the detection efficiency is improved, and meanwhile, all outgoing gears can be detected, and the qualification rate of gear parts when outgoing is improved.
Description
Technical Field
The utility model belongs to the technical field of production detection, and particularly relates to a gear reference circle diameter positioning detection device.
Background
In the machining process of the gear hobbing machine tool, the machined gear workpiece generates change of the pitch circle diameter due to thermal deformation of the machine tool main body and abrasion of the cutter, and in order to ensure that the machined gear has higher precision so as to realize higher qualification rate of the parts when leaving the factory, the machined gear to be leaving the factory needs to be detected;
the existing detection of the gear pitch circle diameter often adopts a manual sampling inspection mode, so that the detection efficiency is low, and when different people perform sampling inspection, the detection results are different (uncertainty of manual detection), so that the detection of the gear pitch circle diameter cannot be ensured to have a unified standard, the manual sampling inspection mode also brings great workload to detection personnel, and moreover, the sampling inspection mode is adopted to detect the pitch circle diameter of the machined gear, so that no defective products appear in the whole outgoing gear, and the qualification rate of the gear when leaving the factory cannot be ensured;
in view of the above, we provide a gear pitch diameter positioning detection device for solving the above-mentioned problems.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the gear pitch circle diameter positioning detection device, which can finish the detection of the pitch circle diameter of the machined gear on a production line, and the whole detection process does not need to be manually participated, so that the detection has a unified standard, the detection work of the gear pitch circle diameter has higher precision, the detection efficiency is improved, and meanwhile, all outgoing gears can be detected, and the qualification rate of gear parts when leaving the factory is also improved.
The gear reference circle diameter positioning detection device comprises a detection frame and is characterized in that a conveying unit is arranged on the detection frame, an electric push rod is fixedly arranged on the detection frame above the conveying unit, a bearing disc is fixed on a telescopic part of the electric push rod, a lifting screw is coaxially and rotatably arranged on the lower end surface of the bearing disc, a driving barrel vertically and slidably arranged on the bearing disc is matched with threads of the lifting screw, a driving ring is coaxially and rotatably arranged at the bottom of the driving barrel, and an expansion positioning device fixedly arranged at the bottom of the lifting screw is driven by the driving ring;
the bearing plate is rotatably provided with a U-shaped frame, a cantilever below the U-shaped frame is longitudinally and slidably provided with a detection ball, a detection spring is connected between the detection ball and the U-shaped frame, a longitudinal driving device matched with the detection ball is fixed on the detection frame, and the bearing plate is provided with an interval driving device which is not used for driving the U-shaped frame and a lifting screw rod at the same time;
and the U-shaped frame is provided with a detection device matched with the detection ball.
Preferably, the detection ball body coupling has detection pole and detection pole slidable mounting in a U-shaped frame is located a cantilever in below, be equipped with rectangular hole and rectangular hole on the detection pole and keep away from detection ball one side upper and lower both ends and carry out the chamfer setting, vertical drive arrangement includes fixed mounting on the detection frame and passes the connecting rod in rectangular hole with vertical, the connecting rod bottom is fixed with the arch.
Preferably, the expansion positioning device comprises a circular plate which is coaxially fixed at the bottom of the lifting screw rod, a plurality of expansion rods are arranged on the circular plate in a sliding manner along the radial direction of the circular plate, an arc friction plate is integrally arranged at one end of the expansion rods, which extends outwards from the circular plate, a connecting rod is rotatably arranged on the expansion rods, and the other end of the connecting rod is rotatably arranged on the outer circular surface of the driving ring.
Preferably, the lifting screw is connected with a first gear rotatably mounted on the bearing disc through a pulley group arranged on the bearing disc, the interval driving device comprises a sector gear rotatably mounted on the bearing disc and matched with the first gear, a second gear coaxially rotated with the U-shaped frame and matched with the sector gear is arranged on the bearing disc, and the sector gear is driven by a stepping motor.
Preferably, the detection device comprises a recording rod fixedly installed on the upper end face of the detection rod and vertically extending, the recording rod upwards penetrates through the upper cantilever of the U-shaped frame, the upper end of the recording rod is fixedly provided with a conducting plate, the cantilever above the U-shaped frame is provided with a resistor plate matched with the conducting plate, the conducting plate and the resistor plate are connected in series in a voltage stabilizing loop, and an ammeter is connected in series in the voltage stabilizing loop and is electrically connected with a data processor.
The technical scheme has the beneficial effects that:
the detection device can directly finish the detection of the pitch circle diameter of the machined gear on the production line, and the whole detection process does not need to be manually participated, so that the unified standard of the detection process is ensured, the detection work of the pitch circle diameter of the gear is higher in accuracy, the detection efficiency is improved, and meanwhile, all outgoing gears can be detected, and the qualification rate of gear parts when outgoing is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of another view angle structure of the present utility model;
FIG. 3 is a schematic diagram showing the matching relationship between the detecting rod and the protrusion;
FIG. 4 is a schematic diagram of the structure of the U-shaped frame and the detection rod after being cut;
FIG. 5 is a schematic view of the positioning relationship of a plurality of arcuate friction plates to a gear according to the present utility model;
FIG. 6 is a schematic view showing the positional relationship between a plurality of arc friction plates and a circular plate when the present utility model is integrated.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of embodiments of the present utility model when taken in conjunction with the accompanying drawings, wherein like reference characters refer to the same parts throughout the different views.
The embodiment 1, this embodiment provides a gear reference circle diameter positioning detection device, refer to fig. 1, including a detection frame 1, characterized in that, we install a conveying unit 2 (the conveying unit 2 is used for conveying the gear to be detected after processing) on the detection frame 1, we fixedly install a vertically compressed electric push rod 3 on the detection frame 1 above the conveying unit 2, refer to fig. 2, we fix the telescopic part of the lower end of the electric push rod 3 with a bearing disc 4, refer to fig. 3, we coaxially rotate and install a lifting screw 5 on the lower end surface of the bearing disc 4, the lifting screw 5 is screwed with a driving cylinder 6 vertically slidingly installed on the lower end surface of the bearing disc 4, we coaxially rotate and install a driving ring 7 on the bottom of the driving cylinder 6, and the driving ring 7 drives an expansion positioning device fixedly installed on the bottom of the lifting screw 5;
referring to fig. 4, a U-shaped frame 8 is rotatably mounted on a carrying disc 4 (the rotational mounting positions of the U-shaped frame 8 and the carrying disc 4 are concentric with the center of the carrying disc 4), a cantilever below the U-shaped frame 8 is longitudinally and slidably mounted with a detection ball 9, a detection spring 10 is connected between the detection ball 9 and the U-shaped frame 8, a longitudinal driving device matched with the detection ball 9 is fixed on the detection frame 1, a space driving device is arranged on the carrying disc 4, and the space driving device does not drive the U-shaped frame 8 and the lifting screw 5 at the same time;
when the device is specifically used, gears to be detected (which are arranged on the conveying unit 2 and can be realized by an interval feeding mechanism, wherein the interval feeding mechanism is the prior art and can be correspondingly designed according to the scheme by a person skilled in the art, and is not an improvement point of the scheme, so that excessive description is not made here), the conveying unit 2 drives a plurality of gears which are arranged at equal intervals to move on the detection frame 1, the conveying unit 2 is driven by a servo motor (the operation of the stepping motor 23 is controlled by a motor controller which is an integrated circuit for controlling the motor to work according to the set direction, speed, angle and response time through active work), namely, the servo motor drives the conveying unit 2 to move forwards for a certain distance at intervals and then stops moving, after the detection device finishes detecting the gear, the servo motor drives the conveying unit 2 to move again so as to realize that the next gear to be detected moves to the position right below the detection device, when the gear positioned on the conveying unit 2 moves right below the electric push rod 3 (the center of the gear is basically coincided with the center of the electric push rod 3 at the moment in our setting), the conveying unit 2 stops moving, at the moment, the electric push rod 3 is controlled to move and the bearing disc 4 is driven to move downwards (when the gear does not move to the position below the electric push rod 3, the height of the detection ball 9 which is slidably arranged on the cantilever below the U-shaped frame 8 and the height of the expansion positioning device which is fixedly arranged at the bottom of the lifting screw 5 is higher than the height of the upper end face of the gear, at this time, the detection ball 9 is partially overlapped with the gear in the vertical projection, as shown in fig. 6), when the gear just moves below the electric push rod 3, as shown in fig. 2, we control the electric push rod 3 to act and drive the bearing disc 4 to move downwards (synchronously drive the U-shaped frame 8 to move downwards along with the downward movement of the bearing disc 4), so that the expansion positioning device fixedly installed at the bottom of the lifting screw 5 moves downwards into a round hole positioned in the middle of the gear (namely, the expansion positioning device fixedly installed at the bottom of the lifting screw 5 is lower than the upper end surface of the gear), the U-shaped frame 8 is synchronously driven to move downwards in the process of driving the bearing disc 4 by the electric push rod 3, a longitudinal driving device matched with the detection ball 9 is installed on the detection frame 1, so that the detection ball 9 is synchronously driven to move towards a direction far away from the gear under the action of the longitudinal driving device, and the detection ball 9 is enabled not to overlap with the gear any more under the action of the longitudinal driving device (namely, the electric push rod can be directly abutted against the upper end surface of the gear when the electric push rod is driven to move downwards along with the movement of the electric push rod 9) at this moment, and the detection ball 9 is not directly influenced by the expansion positioning device when the longitudinal driving device is further down to move down to the gear (the position of the gear is not under the action of the contact with the upper end surface of the expansion positioning device) at the position of the gear at the moment);
the interval driving device arranged on the bearing disc 4 starts to act and firstly drives the lifting screw 5 to rotate, the driving cylinder 6 is synchronously driven to move downwards along with the rotation of the lifting screw 5, the expansion positioning device arranged at the bottom of the driving cylinder 6 is driven to expand and realize a certain positioning effect on the gear by rotating the driving ring 7 arranged at the bottom of the driving cylinder 6 along with the downward movement of the driving cylinder 6 (as shown in figure 5, the gear cannot move easily at this time, the gear is positioned by the expansion positioning device so that the gear is concentric with the bearing disc 4, the center of the walking track of the detection ball 9 is concentric with the center of the gear when the U-shaped frame 8 drives the detection ball 9 to walk along the outer circular surface of the gear), then the interval driving device starts to drive the U-shaped frame 8 to rotate, the detection ball 9 slidingly mounted with the U-shaped frame 8 is synchronously driven to move along the surface of the gear (namely, walk around the teeth on the outer circumferential surface of the gear), because the detection spring 10 is connected with the cantilever bracket below the U-shaped frame 8, when the detection ball 9 contacts with the tooth tip of the gear, the position of the detection ball 9 away from the circle center of the gear is the largest, when the detection ball 9 contacts with the gap between the two teeth, the detection ball 9 is closest to the circular position of the gear, the U-shaped frame 8 is provided with a detection device matched with the detection ball 9, and therefore, the distance difference between the detection ball 9 and the farthest position of the circle center of the gear and the closest position of the circle center of the gear can be measured, and the calculation formula of the gear pitch circle diameter is as follows: the pitch circle diameter d=z (tooth number) m (modulus), the tooth top diameter da=d+2m, the tooth root diameter df=d-2.5 m, we subtract the tooth root diameter (i.e. the distance between the tooth tip of the tooth and the center of the gear) to obtain the modulus (i.e. da-df=4.5 m) of the gear, thus we can calculate the modulus of the gear through the distance difference measured by the detection device, and the pitch circle diameter of the gear is obtained through the product of the modulus and the tooth number of the gear, we electrically connect the detection device with the computer data processing unit, the operation in the above process is obtained through the computer data processing unit, and then it can be directly judged whether the pitch circle diameter of the gear meets the standard;
after the interval driving device is set to drive the U-shaped frame 8 to rotate around the gear for a certain angle, when the interval driving device starts to rotate reversely and drives the U-shaped frame 8 to rotate to the initial position again, the interval driving device does not drive the U-shaped frame 8 any more, then the interval driving device starts to drive the lifting screw 5 to rotate (at the moment, the interval driving device drives the lifting screw 5 to rotate reversely and then drives the driving cylinder 6 to move upwards, the expansion positioning device arranged at the bottom of the lifting screw 5 starts to shrink (does not position the gear) along with the upward movement of the driving cylinder 6), when the interval driving device does not drive the lifting screw 5 any more, the interval driving device stops rotating (the interval driving device is electrically connected with the computer data processing unit and the computer data processing unit controls the starting, stopping and forward rotation of the interval driving device), then the electric push rod 3 is controlled (the electric push rod 3 is electrically connected with a computer data processing unit, the action of the electric push rod 3 is controlled by the computer data processing unit to realize the matching of the whole detection process) to shrink so as to drive the bearing disc 4 to move upwards, the expansion positioning device lower than the upper end face of the gear moves upwards, the U-shaped frame 8 is synchronously driven to move upwards while the bearing disc 4 moves upwards, the detection ball 9 is matched with the longitudinal driving device arranged on the detection frame 1 again in the process of moving upwards the U-shaped frame 8, so that the detection ball 9 moves towards the direction far from the center of the gear synchronously in the process of moving upwards along with the U-shaped frame 8 so as to move to the initial position, the detection ball 9 is not acted by the longitudinal driving device any more and returns to the initial position under the action of the detection spring 10, the detection work of the gear is finished at the moment, then the stepping motor 23 drives the conveying unit 2 to move forward again, so that when the gear to be detected moves downward to the position below the detecting device, the stepping motor 23 stops driving the conveying unit 2, and then the detection of the next gear is started.
In the embodiment 2, on the basis of the embodiment 1, referring to fig. 5, we integrally connect the detecting ball 9 with the detecting rod 11 and slidingly mount the detecting rod 11 on the cantilever below the U-shaped frame 8 (the detecting spring 10 is connected between the U-shaped frame 8 and the detecting rod 11), we set a rectangular hole 12 on the detecting rod 11 and round the upper and lower ends of the side of the rectangular hole 12 away from the detecting ball 9 (as shown in fig. 4), when the electric push rod 3 is not extended, initially, the detecting rod 11 slidingly mounted on the cantilever below the U-shaped frame 8 is matched with the connecting rod 13 fixedly mounted on the detecting frame 1 as shown in fig. 4, at the moment, the round corner position of the side wall of the rectangular hole 12 away from one end of the gear just contacts with the upper end face of the protrusion 14 (at the moment, the detecting ball 9 is above the gear and the vertical projection overlaps with the gear), when the electric push rod 3 acts and drives the bearing disc 4 to move downwards, the U-shaped frame 8 is synchronously driven to move downwards, and then the detection rod 11 is synchronously driven to move downwards, because under the action of the protrusion 14, the detection rod 11 which is arranged on the cantilever below the U-shaped frame 8 in a sliding way is forced to move towards the direction away from the circle center of the gear (the detection spring 10 is compressed), so that when the rounded corner position of the rectangular hole 12 is contacted with the vertex position of the protrusion 14, the vertical projection of the detection ball 9 is not overlapped with the gear any more, and the U-shaped frame 8 is continuously moved downwards along with the continuous extension of the electric push rod 3, and at the moment, the detection rod 11 starts to move towards the direction close to the circle center of the gear under the action of the detection spring 10 (the rounded corner position of the rectangular hole 12 is contacted with the lower half arc surface of the protrusion 14), when the electric push rod 3 stretches to a certain extent, the movement is stopped, at the moment, the upper end face of the detection rod 11 is lower than the lower end position of the bulge 14, at the moment, the detection rod 11 is not interfered by the bulge 14 any more, the detection ball 9 is interfered on the outer circumferential face of the gear (possibly, the tooth tip position is also possibly at the gap position between two teeth and the inclined plane position of the possible teeth) under the action of the detection spring 10, at the moment, the lower end face of the bulge 14 is positioned above the detection rod 11, then, the interval driving device drives the expansion positioning device to position the gear, then, the driving of the U-shaped frame 8 is started to rotate, the detection ball 9 is driven to walk around the outer circumferential face of the gear along with the rotation of the U-shaped frame 8 (the detection spring 10 connected between the detection rod 11 and the U-shaped frame 8 is continuously compressed and stretched in the walking process), and the detection of the indexing diameter of the gear is further realized through the detection device arranged on the U-shaped frame 8;
when the detection of the gear is completed (the U-shaped frame 8 is returned to the initial position under the action of the interval driving device, namely, the rectangular hole 12 arranged on the detection rod 11 just corresponds to the bulge 14 again, the rectangular hole 12 is positioned right below the bulge 14), the interval driving device firstly drives the expansion positioning device to shrink to release the positioning of the gear, then the computer data processing unit controls the electric push rod 3 to shrink upwards to drive the carrying disc 4 to move upwards, the bulge 14 slowly passes through the rectangular hole 12 and enables the lower half arc-shaped surface of the bulge 14 to contact with the upper end position of the rounded part of the rectangular hole 12 in the process of moving upwards, and the detection rod 11 is forced to move towards the direction away from the circle center of the gear, so that when the rounded part of the rectangular hole 12 moves just upwards to the position shown in fig. 4, the electric push rod 3 stops moving, and the detection device completes the reset and starts the detection of the next gear.
In the embodiment 3, on the basis of the embodiment 1, referring to fig. 6, the expansion positioning device includes a circular plate 15 coaxially fixed at the bottom of the lifting screw 5, and a plurality of expansion rods 16 are slidably mounted along the radial direction of the circular plate 15, one end of the expansion rod 16 extending outwards from the circular plate 15 is integrally provided with an arc friction plate 17, a connecting rod 18 is rotatably mounted on the expansion rod 16, the other end of the connecting rod 18 is rotatably mounted on the outer circular surface of the driving ring 7, the driving cylinder 6 is synchronously driven to move vertically while the lifting screw 5 is driven by the interval driving device (the driving cylinder 6 is vertically slidably mounted on the lower end surface of the bearing plate 4, so that the driving cylinder 6 is driven to move vertically when the lifting screw 5 rotates), the driving ring 7 is rotatably mounted at the lower end of the driving cylinder 6, and the connecting rod 18 and the driving ring 7 are rotatably mounted at the same time, namely, the arc friction plate 17 is also rotatably driven by the driving rod 17, and the driving ring 7 is rotatably driven by the lifting screw 5, and the driving ring 17 is rotatably mounted at the lower end of the driving rod 5, and the driving ring 17 is rotatably mounted at the same time as the driving ring 7 is rotatably mounted at the lower end of the driving rod 6, and the driving ring 17 is rotatably mounted at the lower end of the driving rod 6, and is radially mounted at the lower end of the driving ring 7 through the driving rod (16 is rotatably mounted at the driving rod and the driving ring 17) and is rotatably mounted at the lower end of the driving ring 7).
It should be noted here that: the angle of rotation of the lifting screw 5 driven by the interval driving device depends on the inner diameter of the gear to be detected, namely, after the lifting screw 5 is driven by the interval driving device to rotate by a corresponding angle, a plurality of arc friction plates 17 are just abutted against the inner diameter of the gear, and the gear is positioned.
In example 4, on the basis of example 1, referring to fig. 3, the lifting screw 5 is connected with a first gear 22 rotatably mounted on the carrying disc 4 through a pulley group 19 arranged on the carrying disc 4, referring to fig. 5, the interval driving device comprises a sector gear 20 rotatably mounted on the carrying disc 4 and matched with the first gear 22, a second gear 21 coaxially rotating with the U-shaped frame 8 and matched with the sector gear 20 is arranged on the carrying disc 4, the sector gear 20 is driven by a stepping motor 23 (the stepping motor 23 is electrically connected with a computer data processing unit), initially, the matching relation between the sector gear 20 and the first gear 22 and the second gear 21 is as shown in fig. 6 (at the moment, the sector gear 20 is not meshed with the second gear 21 and the first gear 22), and when the stepping motor 23 starts to work, bringing the sector gear 20 to rotate in the counterclockwise direction as shown in fig. 6 and starting to mesh with the first gear 22, bringing the lifting screw 5 to rotate by the pulley group 19, thereby achieving the effect of abutting against the inner diameter of the gear by the plurality of arc friction plates 17 and achieving the positioning effect of the gear, then bringing the sector gear 20 out of engagement with the first gear 22 and starting to engage with the second gear 21, starting to bring the U-shaped frame 8 to rotate (with the rotation of the U-shaped frame 8 bringing the detection ball 9 to walk along the outer circumferential surface of the gear and carrying out the detection process in cooperation with the detection device provided on the U-shaped frame 8), we set that when the sector gear 20 out of engagement with the second gear 21, the stepping motor 23 is reversed to mesh with the second gear 21 again, starting to bring the U-shaped frame 8 to rotate in the opposite direction, after the sector gear 20 is separated from the second gear 21 again (the U-shaped frame 8 is not rotated any more and the detection process of the gear is completed), then the sector gear 20 continues to rotate and is meshed with the first gear 22 to drive the lifting screw 5 to rotate in the opposite direction so that the arc friction plates 17 do not collide with the inner diameter of the gear any more (further, the positioning of the gear is released), and when the unidirectional gear is separated from the first gear 22 (i.e. is in the position shown in fig. 6 again), the stepper motor 23 stops rotating (the whole rotation process of the stepper motor 23 is controlled by the computer data processing unit), and then the computer data processing unit controls the electric push rod 3 to shrink so as to drive the bearing disc 4 to move upwards and to the initial position.
In example 5, referring to fig. 6, on the basis of example 2, the detecting device includes a recording rod 24 fixedly mounted on the upper end surface of the detecting rod 11 and extending vertically, we pass the recording rod 24 upward through the cantilever on the U-shaped frame 8, and the upper end of the recording rod 24 is fixedly provided with a conductive sheet 25, we are provided with a resistor sheet 26 cooperating with the conductive sheet 25 on the cantilever above the U-shaped frame 8, and the conductive sheet 25 and the resistor sheet 26 are connected in series in a voltage stabilizing circuit, we are connected in series with an ammeter in the voltage stabilizing circuit and the ammeter is electrically connected with a data processor (electrically connected with a computer data processing unit), when the U-shaped frame 8 drives the detecting ball 9 to walk around the outer circumference surface of the gear, the detecting ball 9 will pass the tooth tip and the tooth root of the outer circumference surface of the gear, when the detecting ball 9 moves from the tooth tip to the tooth root, the detecting rod 11 drives the conductive sheet 25 to move along the surface of the resistor sheet 26 toward the direction close to the center of the gear, when the detecting ball 9 moves from the tooth root to the tooth tip, the detecting rod 11 drives the conducting strip 25 to move along the surface of the resistor strip 26 along the direction away from the center of the gear through the recording rod 24, so that the conducting strip 25 is continuously driven to reciprocate along the surface of the resistor strip 26 in the process of the detecting ball 9 walking around the outer circumference of the gear, the resistance value of the resistor strip 26 connected into the voltage stabilizing circuit is different (a maximum value and a minimum value are generated), the current in the voltage stabilizing circuit is measured through the ammeter to obtain the change of the resistance value of the resistor strip 26 connected into the voltage stabilizing circuit in series, the data processor calculates the change of the resistance value of the resistor strip 26 connected into the voltage stabilizing circuit through the measured value of the resistance value of the resistor strip 26 to calculate that when the detecting ball 9 drives the conducting strip 25 to walk along the surface of the resistor strip 26, detecting the distance difference between the nearest position of the ball 9 from the center of the gear and the farthest position of the ball from the center of the gear (the resistance of the resistor 26 in unit length is a fixed value, when the current fluctuates between two stable points, calculating the resistance of the resistor 26 connected into the voltage-stabilized power supply when the current is at the two points, further obtaining the length difference between the two points), calculating the modulus of the gear (namely the difference between the diameter of the addendum circle and the diameter of the dedendum circle) through the length difference, and then obtaining the pitch diameter of the gear according to the product of the obtained modulus and the number of teeth of the gear by a data processor, and further judging whether the gear meets the standard;
it should be noted here that: when the detection ball 9 is above the gear and the vertical projection is overlapped with the gear, at the moment, the contact part of the conductive sheet 25 and the resistor sheet 26 is closer to the center of the gear, the U-shaped frame 8 drives the detection ball 9 to reciprocate around the outer circumferential surface of the gear, the computer data processor only takes the current of two stable numerical points and calculates the resistance value of the resistor sheet 26 connected to the circuit according to the current of the two numerical points when the current in the voltage stabilizing loop floats between the two stable numerical points, and then calculates the difference between the diameter of the tooth top circle and the diameter of the tooth root circle according to the resistance value, so that the modulus of the gear is obtained, and the reference circle diameter is obtained by the product of the modulus and the number of teeth (the calculation process is calculated by the computer data processing unit).
The above description is only for the purpose of illustrating the utility model, and it should be understood that the utility model is not limited to the above embodiments, but various modifications consistent with the idea of the utility model are within the scope of the utility model.
Claims (5)
1. The gear reference circle diameter positioning detection device comprises a detection frame (1), and is characterized in that a conveying unit (2) is installed on the detection frame (1), an electric push rod (3) is fixedly installed on the detection frame (1) above the conveying unit (2), a bearing disc (4) is fixed on the telescopic part of the electric push rod (3), a lifting screw (5) is coaxially and rotatably installed on the lower end face of the bearing disc (4), a driving barrel (6) vertically and slidably installed on the bearing disc (4) is in threaded fit with the lifting screw (5), a driving ring (7) is coaxially and rotatably installed at the bottom of the driving barrel (6), and an expansion positioning device fixedly installed at the bottom of the lifting screw (5) is driven by the driving ring (7);
the bearing disc (4) is rotatably provided with a U-shaped frame (8), a cantilever below which the U-shaped frame (8) is longitudinally and slidably provided with a detection ball (9), a detection spring (10) is connected between the detection ball (9) and the U-shaped frame (8), a longitudinal driving device matched with the detection ball (9) is fixed on the detection frame (1), and the bearing disc (4) is provided with an interval driving device which does not drive the U-shaped frame (8) and the lifting screw (5) at the same time;
the U-shaped frame (8) is provided with a detection device matched with the detection ball (9).
2. The gear reference circle diameter positioning detection device according to claim 1, wherein the detection ball (9) is integrally connected with a detection rod (11) and the detection rod (11) is slidably mounted on a cantilever below the U-shaped frame (8), a rectangular hole (12) is formed in the detection rod (11), the upper end and the lower end of one side of the rectangular hole (12) far away from the detection ball (9) are rounded, the longitudinal driving device comprises a connecting rod (13) fixedly mounted on the detection frame (1) and vertically penetrating through the rectangular hole (12), and a protrusion (14) is fixed at the bottom of the connecting rod (13).
3. The gear reference circle diameter positioning detection device according to claim 1, wherein the expansion positioning device comprises a circular plate (15) coaxially fixed at the bottom of the lifting screw (5), a plurality of expansion rods (16) are slidably arranged on the circular plate (15) along the radial direction of the circular plate, one ends of the expansion rods (16) extending outwards from the circular plate (15) are integrally provided with arc friction plates (17), connecting rods (18) are rotatably arranged on the expansion rods (16), and the other ends of the connecting rods (18) are rotatably arranged on the outer circular surface of the driving ring (7).
4. Gear pitch circle diameter positioning detection device according to claim 1, characterized in that the lifting screw (5) is connected with a first gear (22) rotatably mounted on the carrier disc (4) through a pulley group (19) arranged on the carrier disc (4), the interval driving device comprises a sector gear (20) rotatably mounted on the carrier disc (4) and matched with the first gear (22), the carrier disc (4) is provided with a second gear (21) coaxially rotated with the U-shaped frame (8) and matched with the sector gear (20), and the sector gear (20) is driven by a stepping motor (23).
5. The gear reference circle diameter positioning detection device according to claim 2, wherein the detection device comprises a recording rod (24) fixedly installed on the upper end face of the detection rod (11) and extending vertically, the recording rod (24) upwards penetrates through an upper cantilever of the U-shaped frame (8), a conducting sheet (25) is fixedly installed at the upper end of the recording rod (24), a resistor sheet (26) matched with the conducting sheet (25) is arranged on the cantilever above the U-shaped frame (8), the conducting sheet (25) and the resistor sheet (26) are connected in series in a voltage stabilizing loop, and an ammeter is connected in series in the voltage stabilizing loop and is electrically connected with a data processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321419284.9U CN220153499U (en) | 2023-06-06 | 2023-06-06 | Gear reference circle diameter positioning detection device |
| ZA2023/06809A ZA202306809B (en) | 2023-06-06 | 2023-07-04 | Positioning detecting device for gear reference diameter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321419284.9U CN220153499U (en) | 2023-06-06 | 2023-06-06 | Gear reference circle diameter positioning detection device |
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| CN220153499U true CN220153499U (en) | 2023-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117583272A (en) * | 2024-01-18 | 2024-02-23 | 常州市爱伦机械有限公司 | Gear detection system and detection method thereof |
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2023
- 2023-06-06 CN CN202321419284.9U patent/CN220153499U/en active Active
- 2023-07-04 ZA ZA2023/06809A patent/ZA202306809B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117583272A (en) * | 2024-01-18 | 2024-02-23 | 常州市爱伦机械有限公司 | Gear detection system and detection method thereof |
| CN117583272B (en) * | 2024-01-18 | 2024-03-22 | 常州市爱伦机械有限公司 | Gear detection system and detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202306809B (en) | 2024-02-28 |
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