A three-axis, six-degree-of-freedom high-torque power device

Abstract

This invention discloses a three-axis, six-degree-of-freedom high-torque power device, comprising a cylinder, a sealed end cap, and a piston disposed within the cylinder and movable relative to it. An impact block is also disposed within the cylinder and can collide with the piston. The cylinder has a first air inlet and a first air outlet. The piston has an opening extending to its bottom, and a second air inlet and a second air outlet communicating with the opening. An energy storage spring is disposed at the bottom of the piston. The impact block can rotate relative to the cylinder. By controlling the piston to rapidly and continuously reciprocate forward, a source of torque is provided, which is converted into a three-axis, six-degree-of-freedom high-torque output through impact with the impact block.

Description

Technical Field

[0001] This invention relates to a three-axis, six-degree-of-freedom high-torsion power device, belonging to the field of exciter technology. Background Technology

[0002] In the real world, torsion occurs as three-axis, six-degree-of-freedom energy, which does not exhibit a stable sinusoidal fluctuation pattern. Therefore, many current testing applications require three-axis, six-degree-of-freedom torsion energy because it closely approximates reality. Examples include: the effect of low-frequency, small-scale torsion; large-amplitude, small-response torsion, used in manned simulators; and a platform in space capable of three-axis, six-degree-of-freedom torsion, freely moving along the X, Y, and Z rectangular axes in both linear and rotational directions, enabling playability; widely used in simulators, game consoles, sports, and health fields.

[0003] The characteristic of triaxial six-degree-of-freedom energy is random torsion. The system is generally a planar platform with an angled exciter structure. It achieves the triaxial six-degree-of-freedom effect by generating torsion on the platform through the stress of linear motion and angular motion of several simple degrees of freedom. By repeatedly and rapidly impacting multiple angled exciters installed at different positions on the bottom of the platform, the platform is torsioned, thus producing the effect of random torsion characteristics of triaxial six-degree-of-freedom.

[0004] Currently, the generation of three-axis six-degree-of-freedom energy requires a system, which is generally a platform with a large mass and volume, and requires a system composed of several exciters with angles.

[0005] To achieve a system effect with higher frequency and larger torsional magnitude, it would be necessary to increase the mass and volume of the platform, improve the performance of the exciter, or increase the size or number of exciters. This limits the extreme conditions for three-axis, six-DOF random torsional effects. In the existing system structure, the platform can only be used for horizontal torsional movement because the exciter, which can torsion the platform at an angle, requires gravitational acceleration to return to its proper position and can only operate from below the platform. This restricts the system's omnidirectional usability. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a three-axis, six-degree-of-freedom high-torque power device that controls the piston to move forward in rapid and continuous reciprocating rotation; it provides a source of torsional power and converts the torsional power into a three-axis, six-degree-of-freedom high-torque power output by impacting the impact block.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A three-axis, six-degree-of-freedom high-torque power device includes a cylinder, a sealed end cap, and a piston disposed within the cylinder and movable relative to it. An impact block that can collide with the piston is also disposed within the cylinder. The cylinder has a first air inlet and a first air outlet. The piston has an opening extending to its bottom. The piston has a second air inlet and a second air outlet communicating with the opening. An energy storage spring is disposed at the bottom of the piston. The impact block is rotatable relative to the cylinder.

[0009] The aforementioned three-axis, six-degree-of-freedom high-torque power device is characterized in that: the bottom of the piston is provided with a stepped surface, the bend of the stepped surface is provided with a groove, and the energy storage spring is fixed in the groove.

[0010] The aforementioned three-axis, six-degree-of-freedom high-torque power device is characterized in that: the side of the impact block is provided with at least two positioning grooves, the cylinder is provided with a positioning pin inserted into the positioning groove, and the end face of the positioning pin does not contact the bottom surface of the positioning groove, and the opening width of the positioning groove is greater than the outer diameter of the positioning pin.

[0011] The aforementioned three-axis, six-degree-of-freedom high-torque power device is characterized in that: a first pressure boosting hole is provided on the impact block, and a second pressure boosting hole corresponding to the position of the first pressure boosting hole is provided at one end of the piston near the impact block.

[0012] The aforementioned three-axis, six-degree-of-freedom high-torque power device is characterized in that: an air collection zone is provided at the end of the piston near the sealing end cap.

[0013] The aforementioned three-axis, six-degree-of-freedom high-torque power device is characterized in that: the cylinder barrel is further provided with an air intake section communicating with the first air intake port and an air outlet section communicating with the first air outlet port.

[0014] The beneficial effects of this invention are:

[0015] The present invention generates a large torsional dynamic effect in three axes and six degrees of freedom mainly through a two-part structural design:

[0016] First, the energy storage spring enables the piston to rotate rapidly and continuously, providing a source of torque. The piston rotates rapidly and continuously, impacting the impact in a rotating posture. When the circular flat part of the piston impact surface impacts the annular flat part of the impact block, the impact generates the torque required in the radial direction of rotation, providing a source of torque.

[0017] Secondly, the design of the impact block converts the impact force into a large torsional force output with three axes and six degrees of freedom. The impact block design, made of floating high-strength composite material, accepts and adapts to the impact force of the rotating posture, converting the radial rotation and axial forward impact force into a large torsional force output with three axes and six degrees of freedom. The output is achieved by transmitting the force through the impact block to the end face (i.e., the effect surface) of the cylinder, where the effect surface of the cylinder is induced to generate a large torsional force with three axes and six degrees of freedom. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the initial state of a three-axis, six-degree-of-freedom high-torque power device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a three-axis, six-degree-of-freedom high-torque power device of the present invention when the piston collides with the impact block;

[0020] Figure 3 This is a schematic diagram of the piston resetting after the piston and impact block have collided in a three-axis, six-degree-of-freedom high-torque power device of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments.

[0022] like Figures 1-3 As shown, a three-axis, six-degree-of-freedom high-torque power device includes a cylinder 10, a sealed end cap 40, and a piston 20 disposed within the cylinder 10 and movable relative to it. An impact block 30 that can collide with the piston 20 is also disposed within the cylinder 10. The cylinder 10 is provided with a first air inlet 11 and a first air outlet 12. The piston 20 is provided with an opening extending to its bottom. The piston 20 is provided with a second air inlet 22 and a second air outlet 23 communicating with the opening. An energy storage spring 21 is disposed at the bottom of the piston 20. The impact block 30 is rotatable relative to the cylinder 10.

[0023] After the compressed air required for the operation of the device is input from the first air inlet 11, it is input through the opening to the rotation range 26 between the bottom of the piston and the cylinder 10. Since the energy storage spring 21 is a thin sheet of spring steel wound axially in a partially closed ring, it has elasticity. After the energy storage spring 21 is filled with compressed air, it will expand, so that the outer ring surface of the energy storage spring 21 makes circular line contact support with the inner wall surface of the cylinder 10, thereby supporting the entire piston 20. This prevents the inner wall surface of the cylinder and the outer wall surface of the piston from contacting each other, thus solving the frictional resistance of piston rotation and forward movement.

[0024] At the same time, the storage spring 21 not only has a sealing effect, but also expands after being filled with compressed air. The stretched storage spring 21 deforms and gaps between the spring steel sheets, becoming angled fan blades, which can convert air pressure into radial rotation force, thereby causing the piston that is tightly connected to produce a radial rotation effect.

[0025] The piston 20 is provided with an air collection section 25 at one end near the sealing end cap. After being filled with air through the connected and sealed rotation section 26, the piston rotates and moves forward.

[0026] The piston 20 has a stepped surface at its bottom, and a groove is provided at the bend of the stepped surface. The energy storage spring 21 is fixed in the groove. This not only ensures the sealing between the piston and the cylinder 10, but also facilitates the rapid action of compressed air entering from the first air inlet after passing through the opening, the air collection zone 25, and the rotation zone 26, thus ensuring the piston rotates and moves forward. This thrust design allows the piston to overcome the gravity generated by its own mass, enabling it to perform normal reciprocating motion in a vertical, inverted vertical, or any angle.

[0027] The impact block 30 has at least two positioning grooves 33 on its side. The cylinder 10 has a positioning pin 31 inserted into the positioning groove 33, and the end face of the positioning pin 31 does not contact the bottom surface of the positioning groove 33. The opening width of the positioning groove 33 is greater than the outer diameter of the positioning pin 31. While the positioning pin 31 limits the impact block 30, it still ensures that the impact block 30 can rotate and move back and forth within a certain range. When the impact block 30 receives the impact force from the rotating posture of the piston 20, it can be converted into a triaxial six-degree-of-freedom large torque output, which is a force that is radially rotating and axially advancing. The output of the triaxial six-degree-of-freedom large torque is transmitted to the end face (i.e., the effect surface) of the cylinder through the impact block, and the effect surface of the cylinder is induced to generate the effect of triaxial six-degree-of-freedom large torque.

[0028] The cylinder 10 is further provided with an intake section 13 communicating with the first intake port 11 and an outlet section 14 communicating with the first outlet port 12. At the intake section 13, the piston 20 immersed in compressed air is subjected to the upward buoyancy of the compressed air, causing the piston to float. The piston itself has mass, and gravity would cause it to contact the contact surface, which would be detrimental to its movement. The buoyancy helps the piston to move away from the contact surface, further solving the problem of frictional resistance in piston rotation and forward movement.

[0029] After the piston rotates forward, the second air inlet 22 on the piston leaves the air intake section 13, cutting off the air source for the piston to rotate forward. The piston ② continues to rotate forward by the thrust of the compressed air that has been filled into the closed space.

[0030] When the piston collides with the impact block, the piston stops moving forward. The working principle of the piston stopping its rotation and moving forward has two parts designed to occur simultaneously: first, the forward stroke ends when the piston 20 collides with the impact block 30; second, the thrust of the compressed air that allows the piston 20 to rotate and move forward is completely discharged: when the piston 20 collides with the impact block 30, the second exhaust port 23 connects to the first exhaust port 12, so that the compressed air that has filled the closed space is completely discharged, and the piston loses the thrust to rotate and move forward.

[0031] The impact block 30 is provided with a first pressure boosting hole 32, and the piston 20 is provided with a second pressure boosting hole 24 at one end near the impact block 30, which corresponds to the position of the first pressure boosting hole 32.

[0032] The working principle of piston 20 retracting and returning to its position for inflation involves two parts that need to occur simultaneously. First, it utilizes the principle of action equals reaction: after piston 20 impacts impact block 30, a reaction force is generated, giving piston 20 a backward thrust. Second, it utilizes the force generated by compressed air: when piston 20 impacts impact block 30, the first pressure-boosting hole 32 and the second pressure-boosting hole 24 form a closed space. The compression within this space rapidly changes from open to closed, increasing the pressure of the sealed air and thus giving the piston a backward thrust. This thrust design allows the piston to overcome the gravity generated by its own mass, enabling it to perform normal reciprocating motion in a vertical, inverted vertical, or any angle orientation.

[0033] After the device is ventilated, the effect surface of the cylinder 10 will continuously sense the effect of a large torsional force in a three-axis, six-degree-of-freedom manner. The acceleration response values ​​in fifteen different directions are collected using a three-axis accelerometer on the effect surface. The air pressure level of the device is set to a large level: 100 grms.

[0034] The 15 data points from the experiment show that the acceleration response value can reach ±5% of the set value, indicating that the device produces a large torque effect.

[0035] The experimental data shows that the XYZ acceleration response values ​​can reach ±5% of the set value, indicating that the device produces a three-axis, six-degree-of-freedom effect.

[0036] The experimental data shows that the device generates a large torsional force in three axes and six degrees of freedom; it can be used to sense the resonance effect of products with the same inherent frequency range.

[0037] The specific experimental data for implementing this invention are as follows:

[0038]

[0039] In summary, the present invention provides a three-axis, six-degree-of-freedom high-torque power device that controls the piston to rotate rapidly and continuously; it provides a source of torque power, which is converted into a three-axis, six-degree-of-freedom high-torque power output by impacting the impact block.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A three-axis six-degree-of-freedom large-torque force device, comprising a cylinder barrel (10), a sealing end cover (40), and a piston (20) arranged in the cylinder barrel (10) and movable relative to the cylinder barrel (10), an impact block (30) arranged in the cylinder barrel (10) and capable of colliding with the piston (20), a first gas inlet (11) and a first gas outlet (12) arranged on the cylinder barrel (10), an opening extending to the bottom of the piston (20) arranged in the piston (20), a second gas inlet (22) and a second gas outlet (23) arranged on the piston (20) and communicating with the opening, an energy storage spring (21) arranged at the bottom of the piston (20), the impact block (30) being rotatable relative to the cylinder barrel (10), the bottom of the piston (20) being provided with a stepped surface, a clamping groove being arranged at the bending of the stepped surface, and the energy storage spring (21) being fixed in the clamping groove. The side of the impact block (30) is provided with at least two positioning grooves (33), the cylinder barrel (10) is provided with a positioning pin (31) inserted into the positioning groove (33), the end face of the positioning pin (31) is not in contact with the bottom face of the positioning groove (33), and the opening width of the positioning groove (33) is greater than the outer diameter of the positioning pin (31), the energy storage spring is a circular ring which is axially circularly wound by a thin spring sheet and is not completely closed, has elastic expansion, and expands after being filled with compressed air.

2. A three-axis, six-degree-of-freedom large-torque force device according to claim 1, characterized in that: The impact block (30) is provided with a first pressure boosting hole (32), and the end of the piston (20) close to the impact block (30) is provided with a second pressure boosting hole (24) corresponding to the position of the first pressure boosting hole (32).

3. A three-axis, six-degree-of-freedom large-torque force device according to claim 2, wherein: The end of the piston (20) close to the sealing end cover is provided with a gas collection section (25).

4. A three-axis, six-degree-of-freedom large-torque force device according to claim 3, wherein: The cylinder barrel (10) is further provided with an air inlet section (13) communicated with the first air inlet (11) and an air outlet section (14) communicated with the first air outlet (12).

Images