30results about How to "High displacement sensitivity" patented technology

The present invention relates to a gas phase/solid phase composite gyration benchmarking method and a device, which belong to the technical field of precision gyration benchmarking. The method compositely uses the gas lubricating and error averaging technology and the solid supporting and damping technology, the method applies axial solid support in the axial anti-thrust gaseous film of a gas-floated shafting to form a composite supporting mode with the primary solid support and the subsidiary gas support or the primary gas support and the subsidiary solid support or the gas support and the solid support which are the equivalent in order to notably enhance the axial rigidity and bearing capacity of the gas-floated shafting. Applying radial solid support in the radial gaseous film of the gas-floated shafting, the method utilizes the slight elastic deformation of elastic elements to dissipate the medium/high-frequency micro-vibration energy of a mainshaft and the stored deformation energy and static friction characteristic of the elastic elements to enhance positioning damp in order to increase positioning precision. In the device, the solid elastic elements are respectively assembled in the axial anti-thrust gaseous film and the radial gaseous film. The method can establish a gyration benchmark which also takes high precision, high rigidity, high support, low vibration and high displacement sensitivity into consideration.

The invention provides numerical control equipment, wherein a main supporting frame is in a closed loop structure of which the opening faces the vertical direction; an X forward guide rail and an X backward guide rail which are matched with each other are arranged between the main supporting frame and an X-direction sliding seat; a Z-direction guide rod is a round guide rod; the Z-direction guide rod only can be installed together with a Y-direction sliding seat in an up-and-down movement way; a rotation stopping structure for preventing the Z-direction guide rod from rotating along the horizontal direction of the axis of the guide rod is also arranged; the rotation stopping structure comprises a third rotation stopping block, a fourth rotation stopping block, a third spring and a limit mechanism; an accommodation groove is formed in the top part of the Z-direction guide rod; the limit mechanism limits the third rotation stopping block and the fourth rotation stopping block to move in the setting range of the accommodation groove; a rotation stopping groove is formed in a guide hole matched with the Z-direction guide rod; the third spring is installed between the third rotation stopping block and the fourth rotation stopping block; and the third rotation stopping block protrudes from the outer periphery of the Z-direction guide rod and is matched with the rotation stopping groove. The numerical control equipment has the advantages that when a main processing head moves up and down, the stability is good and the imbalance torsion is not easy to generate.

Numerical control equipment comprises a Z-direction guiding device, a sliding seat mounted with the Z-direction guiding device, a sliding seat fixing device, a sliding seat driving device, a workpiece clamping device and a main processing head, further comprises a Z-direction linear guiding rail accommodating hole which penetrates a Y-direction sliding seat and a convex part of the sliding seat, wherein the sliding seat comprises a sliding seat baseplate and a convex part; the convex part protrudes out of the sliding seat baseplate; a first fixing plane is arranged on the outer side surface of the convex part; the Z-direction guiding device comprises a Z-direction guiding rod and a Z-direction guiding rail driving device; one side surface of the Z-direction linear guiding rail accommodating hole is a second fixing plane parallel to the first fixing plane; two first Z-direction linear guiding rail orbits are fixed on the second fixing plane; second Z-direction linear guiding rail orbits are arranged on the Z-direction guiding rod; and the main processing head is arranged under the Z-direction guiding rod. The numerical control equipment has the advantages that the guiding effect is good; a rotating prevention structure is required to be designed additionally; and when the first Z-direction linear guiding rail orbits and the second Z-direction linear guiding rail orbits are abraded, all that is needed is to replace the first Z-direction linear guiding rail orbits and the second Z-direction linear guiding rail orbits.

Numerical control equipment comprises a Z-direction guiding device, a sliding seat, a sliding seat fixing device, a sliding seat driving device, a clamping workpiece device, a main processing head and an electric control device. The sliding seat is used for mounting the Z-direction guiding device, the Z-direction guiding device consists of a Z-direction guiding rod and a Z-direction guiding rod driving device, the Z-direction guiding rod is cylindrical, the sliding seat consists of a sliding seat bottom plate, an upper guiding sleeve and a lower guiding sleeve, the upper guiding sleeve and the lower guiding sleeve are perpendicularly convexly disposed on the sliding seat bottom plate, guiding circular through holes which are fittingly communicated with the Z-direction guiding rod are arranged in the upper guiding sleeve, the sliding seat bottom plate and the lower guiding sleeve, a rotation stopping groove is arranged on the Z-direction guiding rod, a Z-direction guiding sleeve which matches with the Z-direction guiding rod is disposed on a Y-direction sliding seat, a rotation stopping hole which matches with the rotation stopping groove is mounted on the Z-direction guiding sleeve, and the main processing head is arranged below the Z-direction guiding rod. The numerical control equipment has the advantage that a rotation stopping structure is simple.

The invention provides an integrative aligning method for aero-engine assembly and measurement based on dense ball rolling supporting and an integrative aligning device for the aero-engine assembly and measurement based on the dense ball rolling supporting. The method is characterized by being realized through the combined motion of a round bottom disc, an interlayer and a motion table; the interlayer is arranged between the motion table and the round bottom disc; small holes are fully distributed in the interlayer; ball type rolling bodies are respectively embedded into the small holes; when the motion table moves along an X direction, the round bottom disc and the interlayer are kept static, the rolling friction is implemented between the round bottom disc and the motion table, and an X-direction guiding system is matched with guiding grooves in the interlayer to play a role in guiding; when the motion table moves along a Y direction, the round bottom disc is kept static, the interlayer and the motion table synchronously move, the rolling friction is implemented between the round bottom disc and the interlayer, and a Y-direction guiding system is matched with guiding grooves in the interlayer to play a role in guiding. According to the aligning method and the aligning device, a two-dimensional motion adjusting device combining high precision, high stability and great load is established.

The invention discloses a precision instrument guide rail system based on circular rolling element array arrangement and cambered surface clamping and positioning and belongs to the technical field ofprecision instruments and machines. A guide rail component is provided with four working faces, the middle area of each working face is of a groove structure, and each working face is symmetrically provided with two coplanar boss working belts of equal height. A guide rail rack component is composed of four supporting guide plates, and each supporting guide plate is provided with a rolling element set which comprises three rolling unit arrays distributed in a triangle mode. Each rolling unit array is formed by densely distributing a plurality of rolling elements. A sensor clamping and lockingcomponent comprises a clamping matrix, a clamping moving body and a clamping feeding mechanism; the clamping matrix is provided with a long-strip-shaped arc hole, a threaded hole and an arc groove; and the clamping moving body moves in the long-strip-shaped arc hole under the action of the clamping feeding mechanism so that a sensor can be locked or released. The precision instrument guide rail system integrates the characteristics of high precision, high rigidity and the clamping and locking features.

The invention relates to the technical field of fiber sensing, and especially relates to a full distributed fiber displacement sensor based on fiber grating positioning, for solving the technical problem of designing a full distributed fiber displacement sensor which has a large measurement range, does not require integration for displacement data, is simple in structure and is easily applied to a deep geotechnical engineering structure. The full distributed fiber displacement sensor comprises a full distributed sensing fiber, the full distributed sensing fiber is connected in series with more than two fiber gratings, the fiber gratings are taken as position indicators, and the position of one of the fiber gratings is fixed.

The invention discloses a piezoelectric sensor, which comprises a piezoelectric assembly and a fixing steel frame for fixing the piezoelectric assembly, wherein the piezoelectric assembly comprises aplurality of piezoelectric rulers and two steel rails, the two steel rails are oppositely arranged, the piezoelectric rulers are fixed between the two steel rails respectively, the steel rails and thepiezoelectric rulers are combined to form a ladder shape, the outer ends of the steel rails are wrapped with abrasive paper, the upper ends and the lower ends of the steel rails are fixed to the corresponding fixing steel frames respectively, and the piezoelectric assembly is connected with an electric energy storage box and a side slope early warning monitoring system through conducting wires respectively. According to the invention, the pressure sensor is high in precision and high in practicability, the piezoelectric ruler generates electric energy through bending deformation, the electricenergy is provided for a slope early warning monitoring system, self power supply is achieved, and cost is saved.