CN213599992U - Multifunctional teaching type cam test system - Google Patents
Multifunctional teaching type cam test system Download PDFInfo
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- CN213599992U CN213599992U CN202022700873.7U CN202022700873U CN213599992U CN 213599992 U CN213599992 U CN 213599992U CN 202022700873 U CN202022700873 U CN 202022700873U CN 213599992 U CN213599992 U CN 213599992U
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- grating ruler
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Abstract
A multifunctional teaching type cam test system comprises an experiment table bottom cabinet, a hand wheel, a motor, a worm gear reducer, a measuring push rod, a grating ruler, a grating linear sensor, a manual test device and an automatic test device, wherein the hand wheel is connected with the input end of a transmission shaft of the motor; the measuring head of the measuring push rod is abutted against the measured cam and is arranged on the grating ruler, the grating linear sensor is arranged on the sensor base and is connected with the grating ruler, the grating ruler is arranged on the lifting block in a left-right moving mode, the sensor base is fixedly connected with the grating ruler, and the lifting block is arranged on the lifting support base in a lifting mode. The utility model provides a multi-functional teaching type cam test system has improved cam efficiency of software testing, has reduced operating personnel intensity of labour, has improved the precision and the test quality of test.
Description
Technical Field
The utility model belongs to the technical field of the cam test technique and specifically relates to a multi-functional teaching type cam test system is related to.
Background
The cam can control the circular work of the machine and the actuating mechanism while realizing complex motion trail and motion law, so that the cam mechanism can be widely applied to various mechanical equipment, and particularly is still the first choice of mechanical transmission and motion distribution in important occasions such as a high-speed mechanism, a linkage mechanism and the like. The cam mechanism is a high-pair mechanism generally composed of a cam, a driven piece and a frame; over time, the cam wears due to long-term friction with the push rod, and the profile curve changes accordingly. This is a significant cause of the failure of the cam mechanism to perform well planned movements, which has a significant impact on normal production and life requirements. As a common mechanical structure, the accuracy of the profile curve of the cam directly affects the control effect and accuracy.
The geometric method, the analytic method and the parameter design method are the main methods for measuring and designing the cam profile curve at present. The approximate contour curves and related parameters obtained by the three methods are obtained by discrete points, and the more discrete points, the more accurate the obtained contour curve. This will cause the problems of complicated and complicated contour curve calculation method and drawing method of the disc cam, and non-intuitive corresponding relation between accuracy and parameters. The research and development of a multifunctional teaching-type cam intelligent test system to solve the problems are urgent, and the multifunctional teaching-type cam intelligent test system has a wide development prospect in the present and future.
Disclosure of Invention
In order to overcome the defect that prior art exists, the utility model provides a multi-functional teaching type cam test system has improved cam efficiency of software testing, has reduced operating personnel intensity of labour, has improved the precision and the test quality of test.
The utility model provides a technical scheme that its technical problem adopted is:
a multifunctional teaching type cam test system comprises an experiment table bottom cabinet, a hand wheel, a motor, a worm gear reducer, a measuring push rod, a grating ruler, a grating linear sensor, a manual test device and an automatic test device, wherein the motor and the worm gear reducer are both arranged on the experiment table bottom cabinet; a measuring head of the measuring push rod is abutted against the measured cam and is arranged on the grating ruler, the grating linear sensor is arranged on the sensor base and is connected with the grating ruler, the grating ruler is arranged on the lifting block in a manner of moving left and right through the slide block, the sensor base is fixedly connected with the grating ruler, the lifting block is arranged on the lifting support base in a manner of lifting, and the lifting support base is arranged on the experiment table base cabinet;
the manual testing device realizes static testing and comprises an angle scale, a pointer and a dial indicator, wherein the angle scale is tightly attached to a tested cam and is detachably and coaxially connected with an output shaft arranged on a worm gear reducer through a coupling, the pointer is arranged in front of the angle scale and is arranged on a bottom cabinet of the experiment table, and the pointer is vertically arranged and is right opposite to the center of the angle scale; the dial indicator is detachably inserted into the grating linear sensor;
the automatic testing device realizes dynamic testing and comprises a swing encoder, a spindle encoder, a cam measuring instrument and an operation panel, wherein the swing encoder is connected with a worm and gear reducer through a coupler, a balance wheel is arranged on the spindle encoder and abuts against the edge of a tested cam, a grating linear sensor is connected with the cam measuring instrument, a motor, the worm and gear reducer, the swing encoder and the spindle encoder are all connected with the operation panel, the cam measuring instrument and the operation panel are respectively connected with a PC (personal computer), and the operation panel is arranged on the side face of a bottom cabinet of an experiment table.
Further, the cam to be measured is a disc cam or a cylindrical cam.
Still further, the bottom of laboratory bench bottom cabinet is equipped with the universal wheel, the universal wheel has locking device.
Still further, the control panel is a flip type control panel.
Still further, the measuring push rod is one of a sharp-top direct-acting driven member, a flat-bottom direct-acting driven member, a roller direct-acting driven member and a roller swinging driven member.
Still further, the lifting block is arranged on the lifting bracket base through the lifting of the centering bolt, and is fastened and positioned through the fastening bolt.
Still further, sensor base below is equipped with the pulley and supports, the pulley supports and sets up on the elevator to be equipped with the pulley on it, sensor base and pulley contact.
Furthermore, a digital display, a reset key, a cam speed regulation knob and a power button are arranged on the control panel.
The beneficial effects of the utility model are that: the cam testing equipment can test the cam profile curves of the disc cam and the cylindrical cam and the motion displacement, angular velocity and acceleration changes of the cam of the disc cam and the cylindrical cam, and obtains the actual size of the cam by reverse calculation, and the testing range is wide.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a partially enlarged view of fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-4, a multifunctional teaching type cam test system comprises an experiment table bottom cabinet 4, a hand wheel 13, a motor 3, a worm and gear reducer 2, a measuring push rod 8, a grating ruler 11, a grating linear sensor, a manual test device and an automatic test device, wherein the motor 3 and the worm and gear reducer 2 are both installed on the experiment table bottom cabinet 4, the hand wheel 13 is connected with the input end of a transmission shaft of the motor 3, the output end of the transmission shaft of the motor 3 is connected with the input shaft end of the worm and gear reducer 2 through a synchronous belt and a synchronous wheel, and a tested cam is detachably installed on the output shaft of the worm and gear reducer 2; a measuring head of the measuring push rod 8 is abutted against a measured cam and is arranged on a grating ruler 11, a grating linear sensor is arranged on a sensor base 12 and is connected with the grating ruler, the grating ruler 11 is arranged on a lifting block 9 in a manner of moving left and right through a sliding block, the sensor base 12 is fixedly connected with the grating ruler 11, the lifting block 9 is arranged on a lifting support base 10 in a manner of being lifted, and the lifting support base 10 is arranged on the experiment table bottom cabinet 4;
the manual testing device realizes static testing and comprises an angle scale 7, a pointer 5 and a dial indicator 14, wherein the angle scale 7 is tightly attached to a tested cam and is detachably and coaxially connected with an output shaft arranged on a worm gear reducer 1 through a coupler, the pointer 5 is arranged in front of the angle scale 7 and is arranged on an experiment table bottom cabinet 4, and meanwhile, the pointer is vertically arranged and is right opposite to the center of the angle scale 7; the dial indicator 14 is detachably inserted into the grating linear sensor;
the automatic testing device realizes dynamic testing and comprises a swing encoder 2, a spindle encoder, a cam measuring instrument and an operation panel, wherein the swing encoder is connected with a worm and gear reducer through a coupler, a balance wheel is arranged on the spindle encoder and abuts against the edge of a tested cam, a grating linear sensor is connected with the cam measuring instrument, a motor 3, the worm and gear reducer 1, the swing encoder 2 and the spindle encoder are all connected with the operation panel, the cam measuring instrument and the operation panel are respectively connected with a PC (personal computer), and the operation panel is arranged on the side face of a bottom cabinet 4 of an experiment table.
Further, the cam to be measured is a disc cam or a cylindrical cam.
Still further, the bottom of laboratory bench bottom cabinet 4 is equipped with the universal wheel, the universal wheel has locking device.
Still further, the control panel is a flip type control panel 15.
Still further, the measuring push rod 8 is one of a sharp-top direct-acting driven member, a flat-bottom direct-acting driven member, a roller direct-acting driven member and a roller swinging driven member.
Still further, the lifting block 9 is arranged on the lifting bracket base through a lifting centering bolt, and is fastened and positioned through a fastening bolt. The lifting block can move up and down by rotating the centering bolt.
Still further, a pulley support is arranged below the sensor base 12, the pulley support is arranged on the lifting block and provided with a pulley, and the sensor base is in contact with the pulley.
Furthermore, a digital display, a reset key, a cam speed regulation knob and a power button are arranged on the control panel.
As shown in fig. 3 and 4, the hand wheel 13 is fixedly connected with a transmission shaft of the motor 3, an output shaft of the worm gear reducer 1 is coaxially connected with the disc-shaped cam 6 and the angle scale 7 through a coupler, and the angle scale 7 is closely attached to one surface of the disc-shaped cam 6 and is fixedly connected with the output shaft of the worm gear reducer 1 through a hexagon socket head cap screw.
The dial indicator 14 is detachable, is mounted on the grating ruler 11 and the sensor seat 12 when needed, and is used for measuring the horizontal displacement of the grating ruler during manual testing. The grating ruler 11 and the sensor seat 12 are fixedly connected through bolts, and the grating ruler 11 and the sensor seat 12 horizontally move left and right along with the rotation of the disc cam 6. The replacement of the tested cam needs to dismantle the hexagon socket head cap screw, move out the angle scale 7 and the cam in sequence, then install the needed disc cam 6 (or the cylindrical cam) and the angle scale 7 in sequence, and reuse the hexagon socket head cap screw to fixedly connect the hexagon socket head cap screw with the output shaft of the worm gear reducer 1.
The side face of the flip type control panel 15 is provided with an arc-shaped sliding groove, and the flip type control panel is turned outwards by utilizing a clamping groove formed in the inner side face of the experiment table bottom cabinet 4.
The motion rule detection of the cam can realize static test through manual test or realize dynamic test through automatic test.
And an anti-corrosion paint protective layer is arranged on the outer side of the experiment table bottom cabinet 4.
The flip type control panel 15 is provided with a 4-bit LED digital display, and the left side of the 4-bit LED digital display is sequentially provided with a reset key, a cam speed regulation knob and a power supply button.
The upper left side of the back face of the flip type control panel 15 is provided with a five-core port of a spindle encoder, the left side of the five-core port of the spindle encoder is provided with a five-core port of a swing encoder, a serial port is arranged below the five-core port of the spindle encoder, and the right side of the serial port is provided with a 220V power interface and an air switch. The five-core port of the main shaft encoder is connected with the main shaft encoder, the five-core port of the swing encoder is connected with the swing encoder 2, and the serial port is externally connected with a PC. The cam measuring instrument is a TLY-II type cam measuring instrument.
The utility model discloses a test method does:
the manual test method comprises the following steps: installing a cam and an angle scale 7 to ensure that the axis of a main shaft of the cam is superposed with the axis of the angle scale; and installing a dial indicator head 10, and adjusting the offset distance between the measuring push rod 8 and the axis of the cam main shaft to be zero. Rotating a hand wheel, finding a measuring initial position of a cam contour line (corresponding to the measuring push rod initial position at the polar diameter position of a displacement point on the cam contour line at the beginning), setting a dial indicator to be zero, and measuring the radius of a base circle; the hand wheel 13 is rotated to make the cam measure the dial indicator reading every 2.5 degrees and record. Therefore, the reading of the dial indicator directly indicates the displacement change value of the measuring push rod 8, and the displacement change value corresponds to the cam rotation angle change, so that a cam contour line polar coordinate graph can be drawn.
The automatic test method comprises the following steps: installing a cam, and enabling the axis of a main shaft of the cam to be coaxial with the output shaft of the worm reducer; and adjusting the offset distance between the measuring push rod 8 and the axis of the cam main shaft to be zero. Rotating the hand wheel 13 to find the measuring initial position of the cam contour line (corresponding to the initial position of the measuring push rod at the pole diameter position of the displacement point on the cam contour line at the beginning), and measuring the radius of the base circle; after the grating linear sensor is installed and debugged, a signal output line of the sensor is connected to a corresponding interface of the TLY-II type cam measuring instrument under the condition that a power supply of the experiment table and a PC (personal computer) is turned off, and the signal output line is connected with the PC through an RS232 standard serial communication line. Opening a cam measuring instrument and a PC power supply, clicking a test system icon, entering a test system main interface, and opening a serial port number in the 'serial port communication' of a menu bar; the reset key on the control panel is used for resetting the instrument. If the instrument is found to be abnormal or the communication with the PC is in problem, the problem can be eliminated by pressing a reset key; clicking an experiment item, and selecting a cam profile curve detection experiment; opening an initial setting menu, clicking basic parameter setting, and revising related parameters according to an actually used sensor; the maximum stroke of the testing mechanism is a setting interface provided for measuring the push rod, and the maximum stroke of the displacement of the measuring push rod during actual detection is set according to actual conditions; starting a test bed motor, clicking 'start sampling' after a mechanism operates normally, controlling a panel to collect data, returning pulses respectively by a main shaft encoder and a swing encoder, wherein the pulses are respectively a cam main shaft rotation angle and a cam edge swing angle, sending out 1-degree pulse by the encoder, acquiring a one-time measurement push rod displacement change number by a grating linear sensor, sending real-time collection data to the control panel, and simultaneously enabling a system to enter a data receiving and processing state. The sampling progress bar displays the sampling state. And after sampling is finished, displaying the curve of the motion rule of the measured push rod, all the sampled data and corresponding characteristic values on a PC terminal display.
The utility model can complete the test of the cam motion curve of the disc cam or the cylindrical cam by simple operation, obtain the actual contour curve of the cam by reverse calculation, and compare the actual contour curve with the theoretical contour curve; further, the change rule of the displacement, the class speed and the class acceleration of the driven part is reversely solved. Carry out different cam tests, only need install need test the cam can, realized the intelligent ground test of system and surveyed the cam, not only efficiency is higher, life is longer moreover, and safety and stability is good, can satisfy different types of cams and carry out high efficiency test, and practicality and teaching nature are all very strong, and the range of application is also fairly extensive.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. The utility model provides a multi-functional teaching type cam test system which characterized in that: the testing device comprises a laboratory bench bottom cabinet, a hand wheel, a motor, a worm gear reducer, a measuring push rod, a grating ruler, a grating linear sensor, a manual testing device and an automatic testing device, wherein the motor and the worm gear reducer are both arranged on the laboratory bench bottom cabinet; a measuring head of the measuring push rod is abutted against the measured cam and is arranged on the grating ruler, the grating linear sensor is arranged on the sensor base and is connected with the grating ruler, the grating ruler is arranged on the lifting block in a manner of moving left and right through the slide block, the sensor base is fixedly connected with the grating ruler, the lifting block is arranged on the lifting support base in a manner of lifting, and the lifting support base is arranged on the experiment table base cabinet;
the manual testing device realizes static testing and comprises an angle scale, a pointer and a dial indicator, wherein the angle scale is tightly attached to a tested cam and is detachably and coaxially connected with an output shaft arranged on a worm gear reducer through a coupling, the pointer is arranged in front of the angle scale and is arranged on a bottom cabinet of the experiment table, and the pointer is vertically arranged and is right opposite to the center of the angle scale; the dial indicator is detachably inserted into the grating linear sensor;
the automatic testing device realizes dynamic testing and comprises a swing encoder, a spindle encoder, a cam measuring instrument and an operation panel, wherein the swing encoder is connected with a worm and gear reducer through a coupler, a balance wheel is arranged on the spindle encoder and abuts against the edge of a tested cam, a grating linear sensor is connected with the cam measuring instrument, a motor, the worm and gear reducer, the swing encoder and the spindle encoder are all connected with the operation panel, the cam measuring instrument and the operation panel are respectively connected with a PC (personal computer), and the operation panel is arranged on the side face of a bottom cabinet of an experiment table.
2. A multi-function teaching-type cam testing system as defined in claim 1, wherein: the measured cam is a disc cam or a cylindrical cam.
3. A multi-function teaching cam test system as claimed in claim 1 or 2, wherein: the bottom of the experiment table bottom cabinet is provided with universal wheels, and the universal wheels are provided with locking devices.
4. A multi-function teaching cam test system as claimed in claim 1 or 2, wherein: the control panel is a flip type control panel.
5. A multi-function teaching cam test system as claimed in claim 1 or 2, wherein: the measuring push rod is one of a sharp-top direct-acting driven member, a flat-bottom direct-acting driven member, a roller direct-acting driven member and a roller swinging driven member.
6. A multi-function teaching cam test system as claimed in claim 1 or 2, wherein: the lifting block is arranged on the lifting bracket base through the lifting of the centering bolt, and is fastened and positioned through the fastening bolt.
7. A multi-function teaching cam test system as claimed in claim 1 or 2, wherein: the sensor base is provided with a pulley support below, the pulley support is arranged on the lifting block and provided with a pulley, and the sensor base is in contact with the pulley.
8. A multi-function teaching cam test system as claimed in claim 1 or 2, wherein: and a digital display, a reset key, a cam speed regulation knob and a power button are arranged on the control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022700873.7U CN213599992U (en) | 2020-11-20 | 2020-11-20 | Multifunctional teaching type cam test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022700873.7U CN213599992U (en) | 2020-11-20 | 2020-11-20 | Multifunctional teaching type cam test system |
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| Publication Number | Publication Date |
|---|---|
| CN213599992U true CN213599992U (en) | 2021-07-02 |
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ID=76596669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022700873.7U Expired - Fee Related CN213599992U (en) | 2020-11-20 | 2020-11-20 | Multifunctional teaching type cam test system |
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| Country | Link |
|---|---|
| CN (1) | CN213599992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115359709A (en) * | 2022-08-12 | 2022-11-18 | 洛阳理工学院 | Motion detection system of cam transmission mechanism |
-
2020
- 2020-11-20 CN CN202022700873.7U patent/CN213599992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115359709A (en) * | 2022-08-12 | 2022-11-18 | 洛阳理工学院 | Motion detection system of cam transmission mechanism |
| CN115359709B (en) * | 2022-08-12 | 2024-01-26 | 洛阳理工学院 | Cam transmission mechanism motion detection system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210702 Termination date: 20211120 |