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1078results about How to "Reduce machining accuracy" patented technology

Automatic collecting and arranging machine for plastic soft bottle

The invention discloses an automatic machine for collecting and sorting plastic soft bottles. The device comprises a conveyor for plastic bottles, soft bottles or soft bags, as well as a machine frame, wherein a traction device moving horizontally is arranged above the machine frame; a bottle clamping device connected via a lifting cylinder is arranged on a moving trolley of the traction device; the traction device, the lifting cylinder and the bottle clamping device are connected with an electric control device with electrical automatic control; a product collecting device is arranged below the machine frame beside the conveyor; and the electric control device controls the bottle clamping device to make vertical up-down lifting movement under the drive of the lifting cylinder and to make horizontal translating movement under the drive of the traction device, and controls the bottle clamping device to clamp a product input by the conveyor, to transfer the product to the product collecting device through the lifting cylinder and the traction device and then to unclamp the product. The machine can clamp, lift and translate plastic bottles, soft bottles or soft bags input by the conveyor to a preset distance, drop and put the bottles or bags into the product collecting device.
Owner:SICHUAN KELUN PHARMA CO LTD

Floating auxiliary roller type overrun clutch

The invention discloses a floating auxiliary roller type overrun clutch which comprises an outer ring, an inner ring, rolling bodies and auxiliary rollers, wherein engagement spaces used for being engaged with or separated from the rolling bodies are formed between the outer ring and the inner ring; the auxiliary rollers are parallel to an axial line of the overrun clutch and are spaced from the rolling bodies; and the auxiliary rollers are arranged between the rolling bodies in such a way that the auxiliary rollers can move in a circumferential direction of the overrun clutch. According to the floating auxiliary roller type overrun clutch, the processing of a limiting seat is avoided, the processing process is simplified, the working efficiency is improved, and the processing cost is reduced; as the auxiliary roller structure is adopted, the axial length of the overrun clutch and the rolling bodies can be theoretically infinitely prolonged, the engagement length is prolonged, the bearing capacity of the overrun clutch is increased, the radial size of the overrun clutch under higher bearing capacity is reduced, and the service life of the overrun clutch is prolonged; and meanwhile, the probability of imbalance caused by application of a pretension force to point contact of each roller in the prior art is removed, thereby enabling each roller to keep parallel to the axial line of the inner ring.
Owner:SOUTHWEST UNIVERSITY

Piston-free Stirling engine system

The invention discloses a piston-free Stirling engine system comprising a power driving device and a power transmission device, wherein the power driving device comprises an air cylinder and a thermoacoustic converter, and the thermoacoustic converter comprises a high-temperature end heat exchanger, a heat accumulator and a first room-temperature end heat exchanger; the power transmission device comprises an active piston and a first elastic piece far away from one end of the power driving device; the power driving device also comprises a heat buffer tube and an ejector which are sequentially arranged in the air cylinder, wherein the heat buffer tube is positioned on a position corresponding to the high-temperature end heat exchanger which is wrapped on the outer wall of the air cylinder and the heat accumulator; and the ejector is positioned on a position corresponding to the first room-temperature end heat exchanger which is wrapped on the outer wall of the air cylinder in the air cylinder. The invention replaces a part of the ejector, which is higher than a room-temperature end, with the heat buffer tube so that the ejector works in a room-temperature state, thereby enhancing the processing and assembling precision of the ejector and effectively prolonging the service life of the ejector.
Owner:LIHAN THERMOACOUSTIC TECH SHENZHEN

Command point shaping, compressing and interpolating method suitable for numerical control device

The invention relates to a command point shaping, compressing and interpolating method suitable for a numerical control device. The method comprises the following steps of: inserting an arc which has a distance with the middle point of a tolerance set by the numerical control device and is tangential with segments of adjacent command points to the middle point of every three adjacent command points when a numerical control processing procedure judges that any three adjacent command points on a processed curve surface meet a continuous processing condition, wherein the tangential points are used as interpolation points; trimming the interpolation points to reduce calculation errors and rounding errors in the process of reckoning the interpolation points; selecting a characteristic interpolation point through judging the bending directions of processing paths of all the interpolation points; fitting by using a continuous polynomial spline curve with a second derivative to generate a smooth curve; approximately calculating the interpolation points of a current interpolation period and sending the positions of the interpolation points to a servo system of the numerical control device; and driving a servo motor to move. The invention furthest improves the processing efficiency and reduces the influences of the calculation errors and the rounding errors on the processing precision and the processed surface smoothness.
Owner:SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD

Multi-functional all-in-one automatic drilling and tapping machine tool

A multi-functional all-in-one automatic drilling and tapping machine tool comprises assemblies, mutually assembled in a reasonable mode, such as a machine frame, a working table, a concave table, an X-axis servo motor, a Y-axis servo motor, a driving lead screw, a transverse guide rail, a main sliding seat, a multi-workpiece-holder mechanism, a pre-drilling mechanism, a drilling mechanism, a tapping mechanism, a screw tap and a buffer mechanism. Through the reasonable arrangement, automatic micro hole pre-drilling machining, automatic micro hole drilling machining and automatic micro hole tapping machining are achieved through the multi-functional all-in-one automatic drilling and tapping machine tool, and a plurality of problems that at present, the ratio of finished products is low when high-hardness workpiece micro holes are drilled and tapped, the machining cost is too high, the labor intensity of workers is high and automatic machining is difficult to achieve are effectively solved. The multi-functional all-in-one automatic drilling and tapping machine tool is simplified in structure, can achieve all-in-one automatic machining for the high-hardness workpiece micro holes, is high in machining accuracy, low in cost and convenient to maintain, and deserves popularization.
Owner:LISHUI NANGUANG MEASURING & CUTTING

Millimeter wave rectangular-circular transition integrated corrugated horn antenna and processing method

The invention discloses a millimeter wave rectangular-circular transition integrated corrugated horn antenna and a processing method and adopts integrated disposable electroforming for processing. A shell is internally provided with an inner cavity communicating from top to bottom in the shell, and the inner cavity consists of a corrugated inner wall radiation section, a circular waveguide extension section, a rectangular-circular transition waveguide section and a rectangular waveguide extension section from top to bottom, and one end of the port of the rectangular waveguide extension sectionin the shell is assembled with a connection part through sleeve joint. The corrugated horn antenna is electroformed by an inner core with the structure the same as that of the inner cavity, the integrated structure is adopted instead of various independent parts, the discontinuity of inner section change and deteriorated smoothness of a transition part caused by the processing dimension difference of all components, assembly and positioning error and other reasons are avoided, voltage standing wave ratio is reduced and antenna performance is improved, and compared with the traditional discrete part scheme, the scheme also reduces the requirement on processing accuracy properly. In the invention, the antenna performance, production technology complexity and time cost are all improved.
Owner:BEIHANG UNIV

Direct-plug water-sealed connector component, plug thereof and socket thereof

The invention relates to a direct-plug water-sealed connector component, a plug thereof and a socket thereof. The connector component comprises a plug shell and a plug insulator which are connected together; a group of pin contact pieces are axially arranged on the plug insulator; a plug vulcanized body covers the front end and surrounding wall of the plug insulator through vulcanization; the rear end of the plug vulcanized body extends to seal and cover the front end of the plug shell; the pin contact pieces are fixed into a whole through the vulcanization by the plug vulcanized body; the parts, exposed from the plug vulcanized body, of the pin contact pieces form pin plug-in connection sections; the parts, close to the plug vulcanized body, of the pin plug-in connection sections are covered by a corresponding vulcanized protrusion extended from the front end of the vulcanized body to form vulcanized plug-in connection sections; the parts, on the front end of the vulcanized plug-in connection sections, of the pin plug-in connection sections are bare pug-in connection sections; the diameter of the bare pug-in connection sections is smaller than that of the vulcanized plug-in connection sections; and a plug-in connection guide part is arranged at the surface joint part of the bare pug-in connection sections and the vulcanized plug-in connection sections. The connector component can be plugged directly in water.
Owner:CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD

Piezoelectric ceramic direct-driving servo valve based on hydraulic micro-displacement amplification structure

The invention belongs to the technical field of the hydraulic pneumatic servo control, and discloses a piezoelectric ceramic direct-driving servo valve based on a hydraulic micro-displacement amplification structure. Piezoelectric ceramic drives a big piston with a hydraulic micro-displacement amplification structure, and an amplified displacement output is obtained on a small piston so as to push the valve plug of a slide valve to move. Compared with the traditional electro-hydraulic servo valve, the piezoelectric ceramic direct-driving servo valve has the advantages that the defect of small output displacement of the traditional piezoelectric ceramic material is overcome due to the displacement amplification action so as to conveniently manufacture a big-flow servo valve; due to the diaphragm-type big position design, the influence on the input displacement and the dynamic response speed of a piezoelectric ceramic driver by the big-mass and big-inertia load of the traditional piston is avoided; the diaphragm-type piston has the advantages of small inertia, high inherent frequency and high dynamic performance; due to the design of an elliptic flexible hinge diaphragm, the intensity requirement and the rigidity requirement are simultaneously guaranteed; and the small piston and the valve plug are not fixedly connected, the coaxiality is easy to guarantee, and the phenomena of rubbing and clamping due to the coaxiality problem of a fixedly-connected structure are avoided.
Owner:BEIHANG UNIV

LED (Light Emitting Diode) integrated structure, manufacturing method, lamp, display screen, backlight device, projecting device and injection mould of forming plastic part

The invention relates to an LED (Light Emitting Diode) integrated structure comprising a radiating base plate, an LED chip, a lens, a plastic piece of a positioning lens or a forming lens, a conducting wire and a layout circuit conducting layer, wherein two or more than two chip fixing lug bosses which are integrally formed with the radiating base plate are arranged on the radiating base plate, a first through hole of the positioning lens or the forming lens is arranged on the plastic piece of the positioning lens or the forming lens, the chip fixing lug bosses are arranged in the first through hole, the layout circuit conducting layer is extended between the inside wall of the first through hole and the outside walls of the chip fixing lug bosses, one end of the conducting wire is electrically connected with the LED chip, and the other end of the conducting wire is electrically connected with the layout circuit conducting layer which is extended between the inside wall of the first through hole and the outside walls of the chip fixing lug bosses. The LED integrated structure has the advantages of low thermal resistance of an intermediate link, good heat radiating performance, accurate position relation of the lens and the chip, high luminous flux, simple structure, simple assembly, good radiating effect and good optical effect.
Owner:杨东佐

Heavy Duty Overrunning Clutch

The invention discloses a heavy-duty overrunning clutch, which comprises an outer ring, an inner ring, a plurality of rollers and a retaining frame. The retaining frame comprises a support ring I, a support ring II and a plurality of support columns corresponding to the rollers. Spring plates are fixedly arranged on the support columns along the axial direction and are used for applying pre-tightening force on the rollers along the engagement direction of an engagement slot. The direct processing of a limit seat on the outer ring can be avoided, the working efficiency can be increased, the processing cost can be reduced, the service life can be prolonged, and the transmission effect can be guaranteed. Moreover, relevant components can be replaced easily after being damaged, the outer ringneeds not to be rejected as a whole, and the cost of maintenance and use can be reduced. The axial length of the overrunning clutch and the rollers can be increased theoretically indefinitely, the engagement length can be increased, and thus the bearing capacity of the overrunning clutch can be improved. Meanwhile, the pre-tightening force can be applied at multiple points of the rollers according to needs, and the limiting balance for the rollers can be guaranteed while the axial length is ensured, so that the rollers cannot deviate from the axial line of the inner ring. Therefore, the stable operation of the overrunning clutch can be ensured, and mechanical failure can be avoided.
Owner:SOUTHWEST UNIVERSITY

Automatic monitoring method for high-speed milling cutter abrasion

ActiveCN107717631AReflect wear limitAchieve Life PredictionMeasurement/indication equipmentsNumerical controlMean square
The invention discloses an automatic monitoring method for high-speed milling cutter abrasion, and belongs to the field of precision manufacturing. The method comprises the steps that an imaging device directly faces the end of a cutter to collect images repeatedly within the machining intervals set by a numerical control program, wherein the cutter is a milling cutter of a numerical control milling machine; gray-level mean square error counting is carried out on the middle area ( including the area where the cutter is located) of each acquired image, the image with the maximum mean square error is selected as a focused target image, and a white area formed by abrasion exists in the target image; and the abrasion parameter characteristics of the white area are extracted, wherein the abrasion parameters comprise a length, a width and an area, and the abrasion parameter characteristics are used as representation forms of cutter abrasion. According to the automatic monitoring method for the high-speed milling cutter abrasion, the abrasion amount of a micro-milling cutter can be monitored, and the service life of the cutter can be predicted; and damage to a to-be-machined semi-finishedworkpiece or reduction of machining precision caused by the over-damaged cutter can be avoided.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Electrolytic milling-grinding machining tool cathode with efficiency and precision and electrolytic milling-grinding method

InactiveCN108406018AReduced contact depthFully contactedHigh current densityContact depth
The invention relates to an electrolytic milling-grinding machining tool cathode with efficiency and precision and an electrolytic milling-grinding method, and belongs to the field of electrolytic milling-grinding composite machining. According to the electrolytic milling-grinding machining tool cathode and the electrolytic milling-grinding method, a plurality of arc-shaped grooves at equal intervals are formed in the lower end of the side wall of the tool cathode, the side walls of the grooves are insulated, and diamond abrasive particles are inlaid in the wall surfaces of the portions, except for the grooves, of the side wall of a cathode base body through a resin binder, so that electrochemical anodic dissolution only exists in the surfaces of the portions, opposite to the grooves, of aworkpiece, at the moment, the depths of the grooves become a part of a machining gap, accordingly the contact depth between the diamond abrasive particles in the portions, except for the grooves, ofthe side wall of the cathode base body and the machining surface of the workpiece is increased, then the grinding effect of the diamond abrasive particles on the workpiece in the electrolytic milling-grinding process is enhanced, and the precision and the surface quality of the electrolytic milling-grinding machining can be improved; and moreover, compared with the electrolytic milling-grinding finish machining under the low current density in the past, the tool cathode can adopt higher current density, and the machining efficiency can be improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

CBN (Cubic Boron Nitride) grinding wheel

The invention relates to the field of superhard materials, and concretely relates to a CBN (Cubic Boron Nitride) grinding wheel. The invention provides the CBN grinding wheel, which has favorable shock resistance and shape retention, and can bear a larger load during a high-speed grinding process. The CBN grinding wheel comprises a steel core and an abrasive ring. The steel core and the abrasive ring are combined through a binding agent. The CBN grinding wheel is characterized in that the abrasive ring is prepared from the following raw materials in percentage by mass: 30 to 70 percent of CBN abrasive, 20 to 60 percent of metal binding agent, and 2 to 10 percent of auxiliary adhesion agent. The CBN grinding wheel provided by the invention has favorable heat conductivity and is beneficial for reducing the grinding temperature, so that the power loss is reduced, and the grinding speed is improved; the auxiliary adhesion agent in a formula is beneficial for forming pores, and the characteristic of high holding force of the metal binding agent is combined, so that a chip space can be effectively enlarged, and abrasives are more sufficiently utilized; and the grinding wheel has the characteristics of high grinding efficiency, low grinding temperature, low power loss, good processing accuracy, long service life and the like.
Owner:磐维科技(青岛)有限公司
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