CN210834131U - Torsion angle control device for torsion fatigue test tool - Google Patents
Torsion angle control device for torsion fatigue test tool Download PDFInfo
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- CN210834131U CN210834131U CN201922064410.3U CN201922064410U CN210834131U CN 210834131 U CN210834131 U CN 210834131U CN 201922064410 U CN201922064410 U CN 201922064410U CN 210834131 U CN210834131 U CN 210834131U
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Abstract
A torsion angle control device of a torsion fatigue test tool comprises a fixing mechanism for fixing a workpiece to be tested, a torsion load loading mechanism for providing a torsion load and driving the workpiece to be tested to perform torsion motion, an angle detection mechanism which is connected with the torsion load loading mechanism, measures the torsion angle of the workpiece to be tested and transmits data, and a control mechanism which is connected with the angle detection mechanism and the torsion load loading mechanism, receives the data transmitted by the angle detection mechanism, calculates and adjusts the action of the torsion load loading mechanism. The utility model discloses a set up the angle of torsion among the angle detection mechanism real-time detection torsion fatigue test, convert the angular deviation into torsion load loading mechanism's motion value and adjust torsion load loading mechanism's movement distance when having the deviation with the settlement requirement, improved the precision of torsion test frock greatly, and with low costs, application range is wide.
Description
Technical Field
The utility model relates to an angle control device, concretely relates to twist reverse angle control device of fatigue test frock.
Background
At present, many adapting unit all need twist reverse fatigue test before dispatching from the factory and detect its actual life, twist reverse fatigue test for rubber component and be one of the key technology of detecting rubber component actual life, through simulating rubber component operating condition, can obtain comparatively accurate life fast. At present, the torsion fatigue test of rubber products is generally carried out by controlling the action of an actuator connected with a torsion tool to form a torsion angle. In the process of a torsional fatigue test of a rubber product, mechanical errors cannot be avoided due to the limitation of the processing precision of a torsional tool, a hydraulic cylinder and the like or abrasion generated in high-order repeated actions, particularly under the condition of large torque, the positive and negative torsional angles applied to the product deviate from a test set value, and in millions of torsional actions, the torsional angle difference caused by the mechanical errors directly influences fatigue test conclusion data.
For example, in the utility model patent application No. CN2016208306255, entitled "rubber bush double-shaft fatigue endurance test bench", a torsional actuator is adopted to perform torsional fatigue test on a rubber bush load by reciprocating around an axis, and a torque sensor and an angle sensor are arranged in the torsional actuator to acquire and record data in real time. However, in the patent, the torsion actuator is used for performing torsion action to directly drive the rubber bushing to perform torsion, the action mode has too large error, and particularly, the test requirements cannot be met in the movement with large torque. Further, the torque sensor and the angle sensor do not inform the mounting position and manner, and do not involve correction of the angle.
Also, as the invention patent of CN2006100325437 applied by the applicant in 2006, "a method and a device for testing the rubber ball hinge three-way loading fatigue", a torsion oil cylinder is adopted to directly provide a torsion action for a ball hinge through a torsion head for testing, and the structure has a problem of too large error.
Accordingly, there is a need for a tool that can be monitored and adjusted in real time to perform a desired torsional fatigue test on a product.
SUMMERY OF THE UTILITY MODEL
The utility model discloses in the torsional fatigue test process at rubber component to present, because of twisting the frock, machining precision restriction such as pneumatic cylinder, or produce wearing and tearing in the high order number repetitive motion, the mechanical error that causes can not avoid, especially under the big moment of torsion circumstances, the positive negative angle that twists reverse that leads to applying the goods has the deviation with experimental setting value, in the torsional motion through last million times, the poor problem that will directly influence fatigue test conclusion data of the torsional angle that leads to because of mechanical error, a torsional fatigue test frock torsional angle controlling means has been proposed, realize at big moment of torsion, the high order number is guaranteed under the experimental condition that the torsional angle accords with experimental requirement, obtain accurate life.
The utility model discloses a solve the technical means that above-mentioned problem adopted and do: a torsion angle control device of a torsion fatigue test tool comprises a fixing mechanism for fixing a workpiece to be tested, a torsion load loading mechanism for providing a torsion load and driving the workpiece to be tested to perform torsion motion, an angle detection mechanism which is connected with the torsion load loading mechanism, measures the torsion angle of the workpiece to be tested and transmits data, and a control mechanism which is connected with the angle detection mechanism and the torsion load loading mechanism, receives the data transmitted by the angle detection mechanism, calculates and adjusts the action of the torsion load loading mechanism.
Furthermore, the torsion load loading mechanism comprises a reciprocating actuator, an action converter which is connected with the reciprocating actuator and converts the piston motion generated by the reciprocating actuator into torsion motion, and a torsion actuator which is connected with the action converter and drives the test workpiece to carry out torsion motion.
Further, the angle detection mechanism comprises an angle sensor fixed on the torsion actuator and a PLC connected with the angle sensor to read angle data in real time and transmit the data to the control mechanism.
Furthermore, the control mechanism is in control connection with the PLC and the reciprocating actuator, receives angle data of the PLC and converts the angle data into errors of piston movement displacement of the reciprocating actuator, and adjusts the movement distance of the reciprocating actuator.
Further, the reciprocating actuator comprises a hydraulic cylinder moving up and down, the motion converter comprises a movable block, the upper end of the movable block is connected with the lower end of the hydraulic cylinder through a left-right swinging assembly, and the lower end of the movable block is connected with the torsion actuator through a rotating assembly.
Furthermore, the left-right swinging assembly comprises holes which are formed in the lower end of the hydraulic cylinder and the upper end of the movable block, and the lower end of the hydraulic cylinder and the upper end of the movable block are crossed through two holes to be detachably connected.
Furthermore, the rotary motion assembly comprises a motion shaft which is arranged at the lower end of the movable block and can rotate in the movable block, and the motion shaft is fixedly connected with the torsion actuator and drives the test workpiece to do torsion motion through the torsion actuator.
Furthermore, the torsion actuator is of an L-shaped structure, one end of the L-shaped structure is fixedly connected with the workpiece to be tested to perform synchronous torsion motion, and the other end of the L-shaped structure is connected with the moving shaft and performs circular arc motion under the driving of the moving shaft.
The utility model has the advantages that:
1. the utility model discloses a set up the angle of torsion among the angle detection mechanism real-time detection torsion fatigue test, convert the angular deviation into torsion load loading mechanism's motion value and adjust torsion load loading mechanism's movement distance when having the deviation with the settlement requirement, improved the precision of torsion test frock greatly.
2. The utility model discloses a torsional load loading mechanism converts the linear piston motion of pneumatic cylinder into the torsional motion of examination work piece that awaits measuring, compares with traditional torque cylinder, and linear piston motion can more directly perceivedly accurately calculate and adjust, reaches experimental required precision, satisfies experimental requirement.
3. The utility model discloses the precision is high, can reach 1%, and the convenience is structural improvement at present, and is with low costs, and the range of application is wide.
Drawings
FIG. 1 is a schematic view of a workpiece to be tested according to an embodiment;
FIG. 2 is a schematic front view of an overall structure of a control device according to an embodiment;
FIG. 3 is a schematic right-side view of FIG. 2;
FIG. 4 is a front view of a torsional actuator construction according to an exemplary embodiment;
FIG. 5 is a schematic left side view of FIG. 4;
FIG. 6 is a schematic front view of an embodiment of a movable block structure;
FIG. 7 is a schematic view of a workpiece under test according to a second embodiment;
FIGS. 8 and 9 are schematic views of a part of a fixing mechanism according to the second embodiment;
FIG. 10 is a schematic front view showing a configuration of a second torsion actuator according to an embodiment;
FIG. 11 is a left side schematic view of FIG. 10;
in the figure: 1. the device comprises a rubber ball hinge, 11 parts of a metal core shaft, 12 parts of a rubber layer, 13 parts of a metal outer sleeve, 2 parts of a fixing mechanism, 21 parts of a fixing seat, 22 parts of a fixing rod, 23 parts of a first fixing seat, 24 parts of a second fixing seat, 3 parts of a torsion actuator, 31 parts of a main body, 32 parts of a boss, 33 parts of a fixing hole, 34 parts of a connecting seat, 35 parts of a moving shaft, 36 parts of a concave hole II, 4 parts of an angle sensor, 5 parts of a hydraulic cylinder, 51 parts of a concave hole I, 52 parts of a fixing shaft I, 53 parts of a baffle I, 6 parts of a movable block, 61 parts of an upper plate, 62 parts of a middle plate, 63 parts of a lower plate, 64.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example one
In this embodiment, a torsional fatigue test is performed on the rubber ball hinge 1 shown in fig. 1 as a workpiece to be tested, as shown in fig. 1, the rubber ball hinge 1 includes a metal core shaft 11, a rubber layer 12 and a metal outer sleeve 13, and the whole rubber ball hinge 1 rotates around an R axis of the diameter of the rubber ball hinge 1 under the action of an external force in two directions as shown by arrows. As shown in fig. 2-3, a torsion fatigue test tooling torsion angle control device includes a fixing mechanism 2 for fixing a rubber ball hinge 1, an angle detection mechanism for measuring a torsion angle, a torsion load loading mechanism for providing a torsion load and driving a workpiece to be tested to perform torsion motion, and a control mechanism for controlling and adjusting, in this embodiment, the fixing mechanism 2 includes a fixing base 21 and a fixing rod 22 fixed on the ground or a workbench for supporting, the fixing base 21 is two integral blocks locked by bolts, a through hole is provided in the middle, a torsion actuator 3 in the torsion load loading mechanism for driving the rubber ball hinge 1 to perform torsion motion passes through the through hole, and the torsion actuator 3 can rotate around the center of a circle in the through hole. When the dismounting is carried out, the bolt of the fixed seat 21 is opened, the fixed seat 21 is divided into two parts, and the torsion actuator 3 can be taken out. As shown in fig. 4-5, the torsion actuator 3 includes a body 31, the body 31 is also two parts of a bolt-locked integral body, the middle part has a fixing hole 33 of a spherical hinge, the rubber spherical hinge 1 is fixed in the fixing hole 33, the metal core 11 extends from two sides of the fixing hole 33 and is fixed on the ground or a working table through a fixing rod 22, during the torsion fatigue test, the fixing rod 22 fixes the metal core 11 so that the metal core does not move together with the torsion actuator 3, and the rubber layer 12 and the metal outer sleeve 13 form an integral body and form a torsion motion with the metal core 11.
The torsion actuator 3 further comprises a connecting seat 34, a detachable L-shaped structure is formed between the connecting seat 34 and the main body 31, the connecting part of the connecting seat 34 and the main body 31 penetrates through the fixed seat 21, and after the acting force of the torsion load loading mechanism is transmitted to the connecting seat 34, the torsion actuator 3 performs torsion movement by taking the fixed seat 21 as a support.
The angle sensor 4 of the angle detection mechanism is arranged on the boss 32 of the torsion actuator 3, in the test process, the boss 32 and the rubber ball hinge 1 are twisted together, and the angle sensor 4 detects the twisted angle of the rubber ball hinge 1. Of course, the angle sensor 4 may be disposed at other positions as long as the torsion angle of the device can be accurately measured. The boss 32 is not an essential component of the torsional actuator 3.
The torsion load loading mechanism further comprises a reciprocating actuator, in this embodiment a hydraulic cylinder 5, and a motion converter, the hydraulic cylinder 5 being fixable to the frame to provide support. The action converter comprises a movable block 6, the upper end of the movable block is connected with the lower end of a hydraulic cylinder 5 through a left-right swinging assembly, in the embodiment, as shown in fig. 2, 3 and 6, the left-right swinging assembly comprises a first concave hole 51 arranged at the lower end part of the hydraulic cylinder 5, a first fixed shaft 52 with two ends lapped on two sides of the first concave hole 51 is arranged below the first concave hole 51, a first baffle 53 parallel to two sides of the first concave hole 51 is arranged below the first fixed shaft 52, two baffles 53 are arranged below the first baffle 53 and respectively locked with two sides of the first concave hole 51 through bolts, the first fixed shaft 52 is clamped between the first concave hole 51 and the first baffle 53, and in the test process, the first fixed shaft 52 and the first baffle 53 move up and down together with the hydraulic cylinder 5. The left-right swinging assembly also comprises an upper plate 61 and a middle plate 62 which divide the upper end of the movable block 6 into a whole, the upper plate 61 and the middle plate 62 are locked into a whole through bolts, a shaft hole I64 is arranged between the upper plate 61 and the middle plate 62 and used for the first fixed shaft 52 to pass through, and the shaft hole I64 is larger than the first fixed shaft 52, so that the movable block 6 can swing left and right around the first fixed shaft 52 relative to the lower end of the hydraulic cylinder 5. After the whole is formed, the upper plate 61 passes through the first concave hole 51, and the first fixed shaft 52 passes through the first shaft hole 64, so that the lower end of the hydraulic cylinder 5 is in cross connection with the upper end of the movable block 6.
The lower end of the movable block 6 is connected with the connecting seat 34 through a rotary motion assembly, as shown in fig. 4-6, the rotary motion assembly comprises a middle plate 62 and a lower plate 63, which are connected with the movable block 6 through bolt locking, and a second shaft hole 65 is defined between the middle plate 62 and the lower plate 63; the device also comprises a second concave hole 36 formed in one end of the connecting seat 34 far away from the main body 31, and a moving shaft 35 which passes through the second shaft hole 65 and is fixed with the connecting seat 34 at two ends, wherein the moving shaft 35 can rotate in the second concave hole 36. After the movable block 6 is connected into a whole, the lower end of the movable block 6 extends into the second concave hole 36, and the movable shaft 35 passes through the second shaft hole 65 and is fixed with the connecting seat 34, so that the lower end of the movable block 6 is in cross connection with the connecting seat 34.
The angle detection mechanism further includes a PLC (not shown in the figure) connected to the angle sensor 4, and the PLC reads angle data measured by the angle sensor 4 and transmits the angle data to the control mechanism. The control mechanism can be an electronic device such as a PC (personal computer), a notebook computer and the like, an angle value of a torsional fatigue test is preset in the control mechanism, after data read by the angle sensor 4 is received, the control mechanism compares the measured angle data with a preset angle value, when deviation occurs, a deviation value of the angle data is converted into a stroke deviation value of the hydraulic cylinder 5 and is transmitted to the hydraulic cylinder 5, and meanwhile, the movement of the hydraulic cylinder 5 is adjusted, so that the torsional angle of the automatic adjusting device is achieved, and the precision is improved.
When the torsional fatigue test is carried out, the hydraulic cylinder 5 moves up and down, the movable block 6 is driven to move up and down, the movable block 6 transmits the received force to the connecting seat 34 of the torsional actuator 3, the main body 31 is limited by the fixing seat 21 and can only rotate, the connecting seat 34 provides a reaction force for the movable block 6, the movable block 6 swings left and right around the fixing shaft 52 while moving up and down together with the hydraulic cylinder 5, the moving shaft 35 rotates relative to the second shaft hole 65, the tail end of the connecting seat 34 is driven to carry out circular arc motion, the connecting seat 34 drives the main body 31 to twist, and the torsional fatigue test of the rubber ball hinge 1 is completed.
Example two
In the present embodiment, as shown in fig. 7, the workpiece to be subjected to the torsional fatigue test is the thrust rod 7, and in this case, the structure of the fixing mechanism 2 and the main body 31 is completely different from that of the first embodiment, and as shown in fig. 8 and 9, the fixing mechanism 2 may be configured to include a first fixing seat 23 and a second fixing seat 24, in which the first fixing seat 23 is a square steel plate with a through hole and a bolt, and the through hole is provided with a through hole through which the torsional actuator 3 passes, and the function of dividing the two fixing seats is to facilitate the installation of the torsional actuator 3. The second fixing seat 24 is a concave steel plate with screw holes on two sides, the screw holes are matched with the screw holes at one end of the thrust rod 7, and one end of the thrust rod 7 is fixed on the second fixing seat 24 through bolts, of course, the first fixing seat 23 and the second fixing seat 24 can also comprise structures for fixing the first fixing seat with the ground or a workbench, the structures are not limited to the above, and when the tested workpieces are different, the specific structure of the fixing mechanism 2 can also be changed along with the tested workpieces.
As shown in fig. 10 and 11, in the present embodiment, the connecting seat 34 of the torsion actuator 3 is similar to the first embodiment, the main body 31 has a groove formed in the middle of one surface thereof, and a connecting platform formed on the other surface thereof, the connecting platform passes through the through hole of the first fixing seat 23, screw holes are formed on both sides of the groove, the positions of the screw holes are matched with the positions of the screw holes at one end of the thrust rod 7, and one end of the thrust rod 7 is fixed on the main body 31 by bolts. Also, the structure of the torsion actuator 3 is not limited to this, and when used to test different workpieces, the structure of the torsion actuator 3 may also be changed with the test workpiece.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (8)
1. The utility model provides a twist reverse fatigue test frock torsion angle controlling means, includes that will await measuring the work piece and carry out fixed establishment, provide the torsion load and drive the work piece that awaits measuring and carry out torsional motion's torsion load loading mechanism which characterized in that: the torsion testing device is characterized by further comprising an angle detection mechanism which is connected with the torsion load loading mechanism and is used for measuring the torsion angle of the workpiece to be tested and transmitting data, and a control mechanism which is connected with the angle detection mechanism and the torsion load loading mechanism, is used for receiving the data transmitted by the angle detection mechanism and is used for adjusting the action of the torsion load loading mechanism after calculation.
2. The torsion fatigue test tooling torsion angle control device of claim 1, characterized in that: the torsion load loading mechanism comprises a reciprocating actuator, an action converter and a torsion actuator, wherein the action converter is connected with the reciprocating actuator and converts piston motion generated by the reciprocating actuator into torsion motion, and the torsion actuator is connected with the action converter and drives a test workpiece to carry out torsion motion.
3. The torsion fatigue test tooling torsion angle control device of claim 2, characterized in that: the angle detection mechanism comprises an angle sensor fixed on the torsion actuator and a PLC (programmable logic controller) connected with the angle sensor to read angle data in real time and transmit the data to the control mechanism.
4. The torsion fatigue test tooling torsion angle control device of claim 3, characterized in that: the control mechanism is in control connection with the PLC and the reciprocating actuator, receives angle data of the PLC and converts the angle data into errors of piston movement displacement of the reciprocating actuator, and adjusts the movement distance of the reciprocating actuator.
5. The torsion fatigue test tooling torsion angle control device of claim 2, characterized in that: the reciprocating motion actuator comprises a hydraulic cylinder moving up and down, the motion converter comprises a movable block, the upper end of the movable block is connected with the lower end of the hydraulic cylinder through a left-right swinging assembly, and the lower end of the movable block is connected with the torsion actuator through a rotating assembly.
6. The torsion fatigue test tooling torsion angle control device of claim 5, characterized in that: the left-right swinging assembly comprises holes which are formed in the lower end of the hydraulic cylinder and the upper end of the movable block, and the lower end of the hydraulic cylinder and the upper end of the movable block are crossed through two holes to be detachably movably connected.
7. The torsion fatigue test tooling torsion angle control device of claim 5, characterized in that: the rotary motion assembly comprises a motion shaft which is arranged at the lower end of the movable block and can rotate in the movable block, and the motion shaft is fixedly connected with the torsion actuator and drives the test workpiece to do torsion motion through the torsion actuator.
8. The torsion fatigue test tooling torsion angle control device of claim 7, characterized in that: the torsion actuator is of an L-shaped structure, one end of the L-shaped structure is fixedly connected with the workpiece to be tested to perform synchronous torsion motion, and the other end of the L-shaped structure is connected with the moving shaft and performs circular arc motion under the driving of the moving shaft.
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| CN201922064410.3U CN210834131U (en) | 2019-11-26 | 2019-11-26 | Torsion angle control device for torsion fatigue test tool |
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| CN201922064410.3U CN210834131U (en) | 2019-11-26 | 2019-11-26 | Torsion angle control device for torsion fatigue test tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182405A (en) * | 2021-04-30 | 2021-07-30 | 北京航空航天大学 | Thermal torsion forming method of titanium alloy hollow blade and torsion assembly thereof |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182405A (en) * | 2021-04-30 | 2021-07-30 | 北京航空航天大学 | Thermal torsion forming method of titanium alloy hollow blade and torsion assembly thereof |
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