Internal spline accurate measuring device

Abstract

The utility model discloses an internal spline accurate measuring device, and belongs to the technical field of internal spline measuring devices.The internal spline accurate measuring device comprises a base, a frame body, a driving mechanism, a sensor set and a central processing unit, the frame body is fixedly connected to the top of the base, a dustproof cover is fixedly connected to the top of the frame body, the sensor set is arranged on the driving mechanism, and the central processing unit is arranged on the dustproof cover. The driving mechanism is electrically connected with the central processing unit and comprises a motor, a driving gear, a driven gear, a lead screw, a sliding block, a connecting block, a main shaft and a telescopic rod; the device is novel in design and ingenious, and compared with the prior art, the measuring precision and reliability are improved, the result fluctuation phenomenon caused by human factors is eliminated, the testing time of a single sample is remarkably shortened, the production takt is greatly improved, and the purchasing and operation and maintenance cost is effectively reduced; and more enterprises are helped to adopt an advanced measurement technology to promote industrial upgrading and transformation, and the practicability of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of internal spline measuring devices, in particular to an internal spline measuring structure. BACKGROUND

[0002] With the increasingly high requirement of modern industry on the precision of mechanical equipment, the size precision detection of internal spline as an important component of key parts is particularly important.

[0003] The existing internal spline measuring equipment has the following defects: the vernier caliper manual measurement is greatly affected by human factors and has poor consistency; and the imaging quality of the optical projector is limited in the measurement of deep and narrow grooves or multi-tooth internal spline.

[0004] Most importantly, the three-coordinate measuring machine has the following defects: high cost and complex operation, and is difficult to adapt to a large batch production environment.

[0005] Therefore, the application provides an internal spline measuring structure, which realizes automatic measurement through the mechanical structure cooperation of a driving mechanism, a sensor group and a clamping mechanism, and solves the defects of the existing equipment. CONTENT OF THE UTILITY MODEL

[0006] The internal spline measuring structure provided by the application solves the problems in the background technology; compared with the prior art, the technical scheme improves the measurement precision and reliability, eliminates the result fluctuation phenomenon caused by human factors, significantly shortens the single sample test time, greatly improves the production rhythm, effectively reduces the purchase and operation cost, helps more enterprises to adopt advanced measurement technology to promote industrial upgrading and transformation, and greatly improves the practicability of the device.

[0007] In order to achieve the above purpose, the application adopts the following technical scheme:

[0008] An internal spline measuring structure, comprising a base, a frame body, a driving mechanism, a sensor group and a central processing unit, the frame body is fixedly connected at the top of the base, a dust cover is fixedly connected at the top of the frame body, the sensor group is arranged on the driving mechanism, and the driving mechanism and the central processing unit are electrically connected, the driving mechanism comprises a motor, a main gear, a slave gear, a lead screw, a sliding block, a connecting block, a main shaft and an extension rod.

[0009] As a preferred embodiment, the motor is fixedly connected at the top of the dust cover, and the motor is electrically connected with the central processing unit, the lead screw is rotatably connected in the frame body, and the top end of the lead screw extends into the dust cover, the slave gear is fixedly connected outside the lead screw and in the dust cover, the output end of the motor is fixedly connected with the main gear in the dust cover, and the main gear is meshed with the slave gear;

[0010] By starting the motor, the motor drives the main gear to rotate, the main gear meshes with the gear to drive the screw rod to rotate, when the screw rod rotates, the slider will move up and down, thereby improving the practicability of the device.

[0011] As a preferred implementation, the outer thread of the screw rod is connected with a sliding block, the outer part of the sliding block is fixedly connected with a connecting block, the bottom of the connecting block is fixedly connected with a main shaft, and the bottom end of the main shaft is fixedly connected with a sensor group; the main shaft and the sensor group are driven downward by the screw rod until they touch the top of the workpiece, then continue to drop a small distance to overcome the gap effect, at this time the laser emitter starts to scan, and feedback signals to the receiver in real time, after several reciprocating actions, the complete contour curve graph can be obtained, thereby improving the practicability of the device.

[0012] As a preferred implementation, the top of the connecting block is fixedly connected with a telescopic rod, and the top end of the telescopic rod is fixedly connected with the frame body.

[0013] By setting the telescopic rod, the accuracy of the position of the sensor group during measurement is further realized, preventing the sensor group from affecting the measurement effect due to position deviation during measurement, thereby improving the practicability of the device.

[0014] As a preferred implementation, the sensor group adopts a high-sensitivity laser displacement sensor, which integrates multiple different types of high-sensitivity detection elements, and its core components are a laser emitter, a receiver and a signal processor.

[0015] By integrating multiple different types of high-sensitivity detection elements in the sensor group, all-around spatial data can be obtained, and a high-sensitivity laser displacement sensor is used in the sensor group, which has the characteristics of non-contact measurement, avoiding the risk of scratching the surface of the workpiece, thereby improving the practicability of the device.

[0016] As a preferred implementation, the top of the base is provided with a clamping mechanism, the clamping mechanism includes a fixed plate, an electric cylinder and a clamp, both the fixed plates are fixedly connected to the top of the base, both the fixed plates are fixedly connected with the electric cylinder on the side away from each other, both the telescopic ends of the electric cylinders are fixedly connected with the clamps, and both the electric cylinders are electrically connected with the central processing unit.

[0017] By starting the electric cylinder, the electric cylinder drives the clamp to clamp the measured workpiece on the base, ensuring that the measured workpiece is located directly below the sensor group, thereby improving the practicability of the device.

[0018] The beneficial effects of the present application are:

[0019] 1. The inner spline measuring structure improves measurement accuracy and reliability compared with the prior art, eliminates the result fluctuation phenomenon caused by human factors, significantly shortens the single sample test time, greatly improves the production rhythm, effectively reduces the purchase and operation cost, helps more enterprises to adopt advanced measurement technology to promote industrial upgrading and transformation, and greatly improves the practicality of the device.

[0020] 2. The inner spline measuring structure further realizes the accuracy of the position of the sensor group during measurement by setting the telescopic rod, prevents the sensor group from affecting the measurement effect due to position deviation during measurement, and greatly improves the practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is the main body schematic diagram of the device of the present application;

[0022] Fig. 2 is the front internal schematic diagram of the device of the present application;

[0023] Fig. 3 is the driving mechanism schematic diagram of the device of the present application.

[0024] Reference numeral: 1, base; 2, frame; 21, dust cover; 3, driving mechanism; 31, motor; 32, main gear; 33, from gear; 34, lead screw; 35, sliding block; 36, connecting block; 37, main shaft; 38, telescopic rod; 4, sensor group; 5, central processing unit; 6, clamping mechanism; 61, fixed plate; 62, electric cylinder; 63, clamp. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0026] Referring to Figs. 1-3 , an inner spline measuring structure includes a base 1, a frame 2, a driving mechanism 3, a sensor group 4 and a central processing unit 5, the frame 2 is fixedly connected to the top of the base 1, the top of the frame 2 is fixedly connected with a dust cover 21, the sensor group 4 is arranged on the driving mechanism 3, and the driving mechanism 3 is electrically connected with the central processing unit 5, the driving mechanism 3 includes a motor 31, a main gear 32, a from gear 33, a lead screw 34, a sliding block 35, a connecting block 36, a main shaft 37 and a telescopic rod 38.

[0027] The motor 31 is fixedly connected to the top of the dust cover 21, and the motor 31 is electrically connected with the central processing unit 5. The inside of the frame body 2 is rotatably connected with a lead screw 34, and the top end of the lead screw 34 extends to the inside of the dust cover 21. The outside of the lead screw 34 and inside the dust cover 21 are fixedly connected with a driven gear 33. The output end of the motor 31 and inside the dust cover 21 are fixedly connected with a main gear 32, and the main gear 32 is meshingly connected with the driven gear 33. By starting the motor 31, the motor 31 drives the main gear 32 to rotate, and the meshing of the main gear 32 and the driven gear 33 drives the lead screw 34 to rotate. When the lead screw 34 rotates, the slider 35 moves up and down, thereby improving the practicability of the device.

[0028] The outside of the lead screw 34 is threadedly connected with a sliding block 35. The outside of the sliding block 35 is fixedly connected with a connecting block 36. The bottom of the connecting block 36 is fixedly connected with a main shaft 37, and the bottom end of the main shaft 37 is fixedly connected with the sensor group 4. The lead screw 34 drives the main shaft 37 and the sensor to move downward until the top of the workpiece is touched. Then, a small distance is further lowered to overcome the gap effect. At this time, the laser emitter starts to scan and feeds back the signal to the receiver in real time. After several reciprocating actions, the complete contour curve graph is obtained, thereby improving the practicability of the device.

[0029] The top of the connecting block 36 is fixedly connected with a telescopic rod 38, and the top end of the telescopic rod 38 is fixedly connected with the frame body 2. By arranging the telescopic rod 38, the accuracy of the position of the sensor group 4 during measurement is further realized, so as to prevent the sensor group 4 from affecting the measurement effect due to position deviation during measurement, thereby improving the practicability of the device.

[0030] The sensor group 4 adopts a high-sensitivity laser displacement sensor, integrates a plurality of different types of high-sensitivity detection elements, and its core components are a laser emitter, a receiver and a signal processor. The sensor group 4 integrates a plurality of different types of high-sensitivity detection elements to obtain omnidirectional spatial data. The sensor group 4 adopts a high-sensitivity laser displacement sensor. This sensor has the characteristics of non-contact measurement, which avoids the risk of scratching the surface of the workpiece, thereby improving the practicability of the device.

[0031] The top of the base 1 is provided with a clamping mechanism 6. The clamping mechanism 6 includes a fixed plate 61, an electric cylinder 62 and a clamp 63. Two fixed plates 61 are fixedly connected to the top of the base 1. The sides away from each other of the two fixed plates 61 are fixedly connected with electric cylinders 62. The telescopic ends of the two electric cylinders 62 are fixedly connected with clamps 63, and the two electric cylinders 62 are pointingly and electrically connected with the central processing unit 5. By starting the electric cylinder 62, the electric cylinder 62 drives the clamp 63 to clamp the measured workpiece on the base 1, so as to ensure that the measured workpiece is located directly below the sensor group 4, thereby improving the practicability of the device.

[0032] Working principle: First, fix the part to be tested on the special fixture 63. Then, start the motor 31 to drive the transmission screw 34 to make the spindle 37 move downward together with the sensor until it touches the top of the workpiece. Then continue to descend a short distance to overcome the gap effect. At this time, the laser emitter starts scanning and feeds back the signal to the receiver in real time. After several reciprocating actions, a complete contour curve can be obtained. Regarding the operation steps and precautions, turn on the machine and wait for the indicator light to light up to indicate that it is ready. Place the test sample in the designated position and lock it to prevent loosening. Adjust the focus so that the crosshair is clearly visible for subsequent alignment. Click the corresponding button on the software interface to start the automated process. Monitor the data changes displayed on the screen until the measurement is completed.

[0033] The device mainly consists of several core modules, including a base 1, a frame 2, a drive mechanism 3, a sensor group 4, and a central processing unit 5. The base 1 supports the entire system and ensures its stability. The drive mechanism 3 is responsible for moving the sensors into the object under test and also enables the sensors to move precisely throughout the measurement process. The sensor group 4 integrates multiple highly sensitive detection elements of different types to acquire comprehensive spatial data. Finally, the high-performance central processing unit 5 integrates the collected information and calculates the specific parameter values ​​of the target object using a specific algorithm. The sensor group 4 uses a high-sensitivity laser displacement sensor, which has the characteristics of non-contact measurement, avoiding the risk of scratching the workpiece surface. In addition, in order to improve the overall rigidity and anti-interference performance of the system, all metal components are made of aerospace aluminum alloy to ensure long-term stable operation.

[0034] Compared with existing technologies, this technical solution improves measurement accuracy and reliability, eliminates result fluctuations caused by human factors, significantly shortens the testing time for a single sample, greatly increases production cycle time, effectively reduces purchase and maintenance costs, and helps more enterprises adopt advanced measurement technologies to promote industrial upgrading and transformation.

[0035] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A precision measuring device for internal splines, comprising a base (1), a frame (2), a drive mechanism (3), a sensor group (4), and a central processing unit (5), characterized in that, The frame (2) is fixedly connected to the top of the base (1). A dust cover (21) is fixedly connected to the top of the frame (2). The sensor group (4) is set on the drive mechanism (3). The drive mechanism (3) is electrically connected to the central processing unit (5). The drive mechanism (3) includes a motor (31), a main gear (32), a driven gear (33), a lead screw (34), a slider (35), a connecting block (36), a main shaft (37), and a telescopic rod (38). The motor (31) is fixedly connected to the top of the dust cover (21), and the motor (31) is electrically connected to the central processing unit (5). The frame (2) is rotatably connected to a lead screw (34), and the top end of the lead screw (34) extends into the dust cover (21). A driven gear (33) is fixedly connected to the outside of the lead screw (34) and inside the dust cover (21). A main gear (32) is fixedly connected to the output end of the motor (31) and inside the dust cover (21). The main gear (32) and the driven gear (33) are meshed together. The lead screw (34) is externally threaded with a slider (35), the slider (35) is externally fixedly connected with a connecting block (36), the bottom of the connecting block (36) is fixedly connected with a main shaft (37), and the bottom end of the main shaft (37) is fixedly connected to the sensor group (4). The top of the connecting block (36) is fixedly connected to a telescopic rod (38), and the top of the telescopic rod (38) is fixedly connected to the frame (2). The sensor group (4) adopts a high-sensitivity laser displacement sensor, which integrates multiple different types of highly sensitive detection elements. Its core components are a laser transmitter, a receiver and a signal processor. The base (1) is provided with a clamping mechanism (6) at its top. The clamping mechanism (6) includes a fixing plate (61), an electric cylinder (62) and a clamp (63). The two fixing plates (61) are fixedly connected to the top of the base (1). The electric cylinder (62) is fixedly connected to the far side of the two fixing plates (61). The clamp (63) is fixedly connected to the telescopic end of the two electric cylinders (62). The two electric cylinders (62) are electrically connected to the central processing unit (5).

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