31results about How to "Suppress glitch" patented technology

The present invention provides pressure-sensitive adhesive films with a favourable visual appearance and surface printability without discoloration and burrs on the cutting edge after short-wavelength laser machining. At the same time, the PSA films of the present invention exhibit a favourable cuttability, allowing for high fiber laser as well as carbon dioxide laser cutting speeds. Since the use of the PSA films of the present invention as surface protecting films does not require extensive cleaning and polishing operations after the cutting process and the cutting process itself may be accelerated, the efficiency of laser machining methods may be improved.

A chopper stabilized amplifier may include a modulation circuit that performs a digital conversion on an input signal so as to convert the input signal into a first modulated signal by using a modulation signal, the modulation signal being a rectangular wave having a predetermined frequency, an operational amplifier circuit that amplifies the first modulated signal so as to convert the first modulated signal into a second modulated signal, and a demodulation circuit that performs analog conversion on the second modulated signal so as to convert the second modulated signal into an output signal by using a demodulation signal, the demodulation signal having a waveform that corresponds to the differences between frequency components of the first modulated signal and the second modulated signal.

The invention discloses a drilling end actuator suitable for an industrial robot. The drilling end actuator comprises a cutting unit, a connecting unit, a feeding unit, a pressing unit and a measuring unit. The cutting unit mainly comprises a motorized spindle, a cutter handle, a cutter, a servo motor and a cutting transmission assembly and is used for achieving planetary drilling and cutting; the connecting unit mainly comprises a connecting plate and tool fast-switching devices and is used for achieving three installation modes and fast switching between the different installation modes; the feeding unit mainly comprises a lead screw nut pair, a feed motor and a feed transmission assembly and is used for achieving feed movement of planetary drilling and cutting; the pressing unit mainly comprises an air cylinder, a pressing plate, a pressing pipe and a pressing head and is used for pressing a workpiece; the measuring unit comprises a photoelectricity distance sensor and a force sensor and is used for detecting the perpendicularity of the cutter before and after pressing and monitoring the state of the cutter during the drilling process in real time. The drilling end actuator can form a flexible drilling system when used in cooperation with the industrial robot, and precise drilling of stacked materials can be achieved.

The invention discloses a non-resonant three-dimensional elliptical diamond fly-cutting optical free curved surface method and a special device, belonging to the field of cutting technology of free curved surface of hard-processing materials. In the invention, a non-resonant driving mode is used to enable a diamond cutter to generate medium-high frequency or ultrahigh frequency three-dimensional elliptical movement in order to form high-speed or ultrahigh-speed diamond fly-cutting main movement; a cutter edge motion track is projected as reciprocating rectilinear movement on an x-z plane and is respectively projected as elliptical movement on an x-y plane and a y-z plane; the optical free curved surface is created on the basis of the combination of the movements of three-dimensional elliptical diamond fly cutting, X-axis feeding, Z-axis reciprocating feeding, worepiece rotary feeding, and the like. The invention also discloses a diamond cutter three-dimensional elliptical movement track generating device which are directly driven by four piezoelectric stacks, the three-dimensional elliptical movement parameters can be independently controlled, which is beneficial to the obtaining of optimal cutting performance, and the follow-up control of the three-dimensional elliptical movement avoids distortion in a real cutting process.

The invention provides a drilling method for a carbon grid assembly of an iron propeller, belongs to the field of iron propeller manufacturing, and relates to a mechanical processing method of pairs of drill holes of the carbon grid assembly under one-time clamping by utilizing a mode for cooling drill holes through a step drill and external sprayed high-pressure liquid nitrogen. The method comprises the steps that firstly, the spherical-crown-shaped carbon grid assembly is clamped on a machine table in a 'sandwich' mode, the step drill is used for different diameters of small holes in pairs of the carbon grid assembly at a time, and the high-pressure liquid nitrogen is used for cooling processing to reduce the cutting temperature; then, drilling of other carbon grid array holes is completed under the control of a numerical control system. The method effectively reduces burrs and lamination defects which are caused by drilling by adding upper and lower supporting plates of the carbon grid assembly, the liquid nitrogen is used for cooling processing to greatly reduce the temperature of a cutting area, and oxidation, ablation and other defects of the carbon grid assembly are effectively restrained; the position precision of the array holes of the carbon grid assembly is ensured by using the step drill to process the holes in pairs at a time, the processing efficiency is high, andthe precision uniformity is good.

The multi-piece wiring substrate includes: a mother substrate having a first main surface and a second main surface opposite to the first main surface, and a plurality of wiring substrate regions are arranged, the mother substrate includes: a division groove along the wiring substrate region The boundary of the boundary is set on the first main surface and the second main surface, and the dividing groove has: the first dividing groove, which is arranged on the first main surface of one side of the wiring substrate region; the second dividing groove, which is opposite to the first dividing groove Provided on the second main surface; the third dividing groove is provided on the first main surface of the other side of the wiring substrate region; and the fourth dividing groove is provided on the second main surface opposite to the third dividing groove, and the first The depth of the division groove and the depth of the second division groove are set larger than the depth of the third division groove and the depth of the fourth division groove, and the depth of the third division groove is gradually increased toward the corner of the wiring board region. a curved portion, and has a second curved portion in which the depth of the fourth dividing groove gradually increases toward the corner of the wiring substrate region.

The invention provides a glass fiber reinforced daiamid resin composition, which has excellent thin-wall forming property and surface appearance, and is applied to thin-wall portable electronic appliance components or computer frame components. The glass fiber reinforced daiamid resin composition is formed in combined with 50 to 150 parts of glass fiber by weight relative to 100 parts of daiamid resin composition by weight containing 90% to 99% of daiamid resin by weight and 1% to 10% of acid modified styrene elastomer by weight, the daiamid resin is combined with 20% to 60% of daiamid 66 resin by weight, 20% to 40% of daiamid 12 resin and 20% to 50% of amorphous daiamid resin by weight, and the total dose is 100% by weight.

The ultrasonic elliptically vibrating boring process in the field of precise machining technology includes the following steps: 1) adhering two piezoelectric ceramic chips onto two orthogonal surfaces of elliptically vibrating amplitude-varying rod; 2) applying sinusoidal voltage across the chips to make the chips to stretch and contract and the rod to bend and vibrate; 3) strengthening the bending and vibration of the rod; 4) making the boring cutter fixed to the tip of the rod obtain maximum elliptic vibration; 5) synthesizing the horizontal and vertical bending vibrations to obtain the elliptic vibration track in the edge of the boring cutter; and 6) fixing the elliptically vibrating amplitude-varying rod onto the boring rod via the vibration node. The present invention has greatly reduced boring force, reduced boring rod deformation, raised stability of the boring system and raised boring precision and surface smoothness.

The invention discloses a milling and drilling combined machining cutter. The milling and drilling combined machining cutter comprises a cutter body and a cutter handle; the cutter body comprises a drilling part, a milling part and a guide part which are arranged in sequence; the guide part is connected with the cutter handle; the drilling part is positioned at the front end of the milling part; the milling part has certain conicity; the guide part comprises at least two long helical chip discharging grooves which extend from the drilling part to the cutter handle; a part, positioned between two adjacent long helical chip discharging grooves, of the cutter body forms a blade petal; the side surface, close to the long helical chip discharging grooves and opposite to the rotating direction of the cutter body, of the blade petal is provided with a cylindrical guide blade strip; the side surface, opposite to the rotating direction of the cutter body, of each long helical chip discharging groove is intersected with the milling part to form a taper long milling blade; the blade petal is provided with at least one short helical chip discharging groove which extends from the milling part to the guide part; and the milling part is intersected with the side surface, opposite to the rotating direction of the cutter body, of each short helical chip discharging groove to form a taper short milling blade. Under a composite material drilling machining condition, the milling and drilling combined machining cutter disclosed by the invention can reduce an axial cutting force so as to prevent defects of layering, cracks and burrs generated at the outlet of a machined hole.

The invention relates to the technical field of metal cutting, and discloses a double-face groove profile cutting blade. A blade body is of a geometric structure, wherein the geometric structure is provided with a polygon and is symmetric up and down. A positioning hole is formed in the geometric center. The blade body is composed of an upper end face, a lower end face, a plurality of side surfaces and an arc side face located between every two adjacent side surfaces, and the upper end face and the lower end face are provided with supporting surfaces between the edges of scrap cutting tables and the positioning hole. The top corner of the blade is provided with no fewer than one cutting unit part, and each cutting unit part is composed of a cutting edge, the corresponding scrap cutting table and a scrap cutting guiding protruding part, wherein the scrap cutting table is composed of a front blade face and a plurality of cutting guiding faces, the scrap cutting guiding protruding part isarranged at the top corner of the cutting unit part, and the cutting edge is composed of an arc cutting edge body, a main cutting edge body, a transition cutting edge body and an auxiliary cutting edge body. Through the blade, the sharpness and stability of the cutting edges are improved, scrap cutting and discharging are smooth, blade abrasion is reduced, and the phenomenon of built-up edges iseffectively restrained.

An object of the present invention is to suppress generation of burrs or damages at both ends of a tubular center core for a secondary battery. The grinding wheel guide (20) of the present invention is used to guide a cutting grinding wheel (10) for cutting a tube when manufacturing a tubular central core for a secondary battery, and the grinding wheel guide (20) includes: a tube bundle support ( 22, 23, 24), which hold the tube bundle in a state where one or more bundles of material tubes are arranged; Guide, the guide member (22, 23) has a pair of guide surfaces (30) that abut against the side surfaces of the cut-off grinding wheel (10), and the guide surfaces (30) are formed of sintered diamond or cemented carbide. Preferably, the tube bundle support (22, 23, 24) has a holding frame (27) for a plurality of tube bundles to be fixed side by side on the inside, and the guide surface (30) is arranged so as to surround the holding frame (27) toward the cutting wheel (10). U-shaped with the opposite side open.

The present invention provides a molded package capable of effectively suppressing the intrusion of flux into the recessed portion of the molded package when used in a light-emitting device, and capable of suppressing the occurrence of burrs in the molded resin body in the recessed portion. The package molding of the present invention includes: a resin molding having a concave portion for accommodating a light-emitting component on its upper surface; a bottom surface of the concave portion of the resin molding is partially exposed and extending to a side constituting the concave portion The lead wire is below the wall and is electrically connected to the light emitting part, and in the package molding body, the lead wire has a groove portion formed on the surface of the lead wire along at least a part of the side wall, the groove portion It has an inner upper end edge and an outer upper end edge, and is filled with the resin molded body so that the inner upper end edge is exposed on the bottom surface of the concave portion and the outer upper end edge is embedded in the resin molded body.

A device includes a snapback clamp circuit configured to clamp a supply voltage in response to the supply voltage exceeding a trigger voltage level. In at least one embodiment, the snapback clamp circuit includes a clamp transistor and a programmable resistance portion that is responsive to a control signal to calibrate the trigger voltage level. Alternatively or in addition, the snapback clamp circuit may include a programmable bias device configured to calibrate the trigger voltage level by biasing a gate terminal of the clamp transistor. In another particular embodiment, a method of calibrating a snapback clamp circuit is disclosed. In another particular embodiment, a method of operating an integrated circuit is disclosed.