31results about How to "Improve hole making precision" patented technology

The invention discloses an adjustable multi-point positioning hole making device, which comprises a hole making template, a regulating template and two bridging plates used for connecting the hole making template and the regulating template, wherein the hole making template comprises a hole making end provided with hole groups and a positioning end used for connecting the bridging plates, the regulating template comprises a hole making end provided with hole groups and a regulating positioning end used for connecting the bridging plates, one ends of the bridging plates are provided with a plurality of groups of connecting holes matched with positioning holes of the hole making template, each group of connecting holes are in arrangement with certain distances between the front and the back, and the other ends of the bridging plates are provided with bridging holes. The adjustable multi-point positioning hole making device adopting the technical scheme has the advantages that the universality is high, the kind and the number of the hole making device can be recued, the tooling manufacture cost is reduced, and the standard production requirement of the hole making in the large-scale manufacture process is met. The invention also discloses a hole making method utilizing the device, the method is simple and feasible, and the hole making is precise.

Disclosed is a hole diameter error modified compensation method based on a screw milling hole. The hole diameter error modified compensation method comprises the steps of establishing a standard hole three-dimensional model for an assembly hole, selecting a machining tool, setting processing parameters, trial-manufacturing an assembly hole, detecting the aperture of the assembly hole, establishing a trial-manufacturing hole three-dimensional model according to the aperture detection result, comparing the trial-manufacturing hole three-dimensional model with the standard hole three-dimensional model, determining a hole diameter error of the assembly hole at different positions, setting compensation dosage according to the hole diameter error, synchronously modifying the eccentricity of the tool axis and the assembly hole axis in the processing parameters according to the compensation dosage, trial-manufacturing an assembly hole again under the modified processing parameters, establishing another trial-manufacturing hole three-dimensional model according to the aperture detection result, comparing the trial-manufacturing hole three-dimensional model with the standard hole three-dimensional model, and determining whether the aperture of the assembly hole at different positions meets the accuracy requirements or not, when the aperture meets the accuracy requirements, starting the formal manufacturing hole process of the assembly hole, otherwise, repeatedly adjusting the compensation dosage and synchronously modifying the processing parameters until the aperture meets the accuracy requirements.

The invention relates to a drilling device for aircraft panel skin and belongs to the technical field of structural design. The device comprises a guide rail base body, a drill bushing base body and apositioning mechanism, wherein a guide rail and a hole forming groove are formed on the guide rail base body, the guide rail is arranged on an upper surface of the guide rail base body and arranged along the center line of the guide rail base body, the hole forming groove penetrates through the guide rail and a bottom face of the guide rail base body, axial directions of the two are consistent, and a bottom face of the guide rail base body is matched with the aircraft panel skin, the drill bushing base body is provided with a drill bushing and a drill bushing hole, the drill bushing is installed in the guide rail and can slide along the guide rail, the drill bushing hole penetrates through the axis of the drill bushing and is communicated with the hole forming groove, and a positioning mechanism is used for fixing the drill bushing base body to the guide rail base body. The device is advantaged in that 1, an application range is wide; 2, a repeated utilization rate is high; 3, interchangeability is good; 4, flexibility is high; and 5, drilling precision is improved, manufacturing cost of large special equipment can be saved, and development cost of newly-researched products is effectively reduced.

A locating-plate-based quick installation method for a steel structure roof beam is characterized by comprising the following steps: a, prefabricating a steel structure roof beam (1), b, prefabricating a locating plate (5), c, prefabricating a movable connecting plate (2), and d, hoisting the steel structure roof beam. The locating-plate-based quick installation method for a steel structure roof beam, provided by the invention, has the following advantages: the locating plate and the movable connecting plate are simple in structure, convenient to fabricate, and safe and reliable to use; the accuracy of perforation is improved in roof beam fabrication; quick stress is applied to the roof beam in a backing fixing way for the locating plate, and the objective of achieving advanced unhooking of a crane is achieved with reduced construction cost of an installation project.

The invention discloses a copying cutting machine of a waist-shaped hole. The copying cutting machine is characterized by comprising an automatic cutting machine, an angle steel check block and a copying sample plate which are arranged on a cutting platform, wherein the automatic cutting machine is a cutting gun provided with a copying propping wheel and a copying plate fixing shaft; the copying sample plate adopts a waist-shaped hole real sample shape provided with a fixing hole; the copying sample plate is arranged on the copying plate fixing shaft of the automatic cutting machine and is in fit contact with the copying propping wheel; and the cutting gun automatically cuts along the waist-shaped hole real sample shape of the copying sample plate to achieve manufacturing of the waist-shaped hole. Compared with the prior art, the copying cutting machine has the advantages that the hole making accuracy is high, the processing quality is high, the structure is simple, the manufacturing is convenient, the production efficiency is high, the manufacturing cost is further reduced, and the copying cutting machine is particularly applicable to processing of a relatively large batch of waist-shaped holes in steel structure manufacturing.

The invention discloses a precise hole machining method for a glue-containing laminated material, and belongs to the technical field of aerospace part preparation. The precise hole machining method is characterized by comprising the following steps that a, primary holes of an upper material and a middle rubber layer material in the laminated material are drilled by using a large-diameter drill bit, and then a bottom hole of a bottom material is drilled by using a small-diameter drill bit; b, a boring cutter sequentially passes through the upper material, the middle rubber layer material and the bottom material, the hole diameters of the primary holes and the bottom hole are enlarged correspondingly, and then grinding is conducted through a reamer; and c, finally, hole diameter expansion is conducted on the primary holes of the upper material and the middle rubber layer material and the bottom hole of the bottom material through the boring cutter, and fine hole machining of the rubber-containing laminated material is completed. According to the precise hole machining method, through cooperative use of the boring cutter and the reamer, machining correctness and machining efficiency of the holes in the different materials can be guaranteed, and the position precision and aperture precision requirements of the holes are guaranteed.

The invention provides a method for evaluating influence of cutter deformation on helical milling drilling precision, and relates to the technical field of machining precision. The method comprises the following steps: 1, performing helical milling and drilling on a to-be-machined material; 2, detecting radial force in the helical milling drilling process; 3, carrying out size data detection on adetection position set in the aperture of the material obtained after helical milling; 4, establishing a three-dimensional model of the milling cutter in the helical milling process; 5, according to the three-dimensional model of the milling cutter and the radial force borne by the milling cutter at each detection position, performing deformation simulation analysis on the milling cutter by adopting a finite element simulation method; and 6, comparing the aperture measurement results at different detection positions with the cutter deformation simulation analysis result obtained in the step 5to obtain the influence degree of cutter deformation on the aperture precision. According to the method, the influence degree of cutter deformation on the aperture precision can be rapidly and accurately obtained, and then technical measures for improving the drilling precision can be obtained.

The invention provides a hole forming device for a steel-structure cross-section column web. The hole forming device comprises a stand column support, a supporting column with a gear, a transverse arm and a transmission assembly. The supporting column with the gear is fixed to the stand column support. The transverse arm is perpendicular to the axis of the supporting column with the gear, and is fixed to the supporting column with the gear. A transverse arm regulation handle used for regulating the punch position is arranged on the transverse arm. A lifting motor used for regulating the height of the transverse arm is arranged at the top end of the supporting column with the gear. The transmission assembly comprises a drill machine motor, a belt disk, a belt and a drill bit assembly. The hole forming device fills in the blank that no special hole forming devices exist, and holes of webs of various cross-shaped columns with different sections can be formed; the electromagnetic relay principle is adopted, and the device can be attached to flange plates of three faces of a cross-shaped column; the hole forming precision is improved, the machining program of crosses is reduced, the onsite installation punching rate is better ensured, and component overturning is reduced.

Disclosed is a manufacturing method for a tower damper. The manufacturing method is characterized by comprising the following steps of (1) material selection, (2) production preparation, (3) steel blanking, (4) hole drilling, (5) welding, (6) manufacturing deviation examining, (7) rust removal and coating, (8) marking, (9) workshop assembly, and (10) packing and transportation. The manufacturing method for the tower damper has the advantage that the hole drilling precision is high, the influence of welding deformation is eliminated, the component machining precision is high, a factory simulation test is conducted, and assembly in a narrow space is ensured.

The invention discloses a drilling tool and a drilling method.The drilling tool for the weakly-rigid component comprises a tool body, a rough machining blade, a finish machining blade and an annular transition groove surrounding the tool body by a circle, and the tool body is provided with an annular groove in the direction from the cutting end of the tool body to the mounting end of the tool body; the diameter of the rough machining blade is smaller than that of the finish machining blade, and the width of the annular transition groove is larger than the thickness of a component. A hole making method for a weak rigidity component comprises the machining steps that a primary hole is drilled in the component; and forming a final hole in the component by adopting a hole forming tool. According to the hole making cutter and the hole making method, the technical problems of large deformation and low hole making precision in the hole making process caused by a traditional machining cutter and a traditional machining method are solved. Deformation in the drilling process is reduced, so that hole position deviation, hole diameter deviation and roundness deviation are improved, and drilling precision is improved.

The invention discloses an electroforming and punching integrated porous copper foil manufacturing system and method, and belongs to the technical field of porous copper foil processing. The system comprises an electroforming unit I, an electrolytic hole making unit II and an electrolyte circulating unit III, wherein the electrolytic hole making unit II comprises a copper foil conveying roller, a copper foil pressing roller, an arc-shaped permanent magnet, a copper foil winding roller, a movable mask belt, an arc-shaped cathode, a first mask belt tensioning roller, a second mask belt tensioning roller, a mask belt driving roller and an electrolytic power supply. During processing, the copper foil is wound on the winding roller after passing through the rollers and the movable mask belt, and the spatial position of each roller is adjusted, so that the copper foil is tightly pressed and attached to each part; opening an overflow valve, and spraying the electrolyte to the movable mask belt at a high speed; and turning on a power supply, dissolving the copper material in the exposed area, and gradually forming the through holes from the micro pits along with the forward movement of the mask belt. According to the invention, integration, continuity and synchronization of copper foil forming and punching can be realized, the process flexibility and adaptability are improved, and the high-quality and high-efficiency preparation requirements of the copper foil with massive holes are met.

A steel member assembling mould is composed of mould side plates, a middle plate, and a mould platform. Two support plates are disposed on the mould platform; the middle plate are disposed on the twosupport plates; a base plate is disposed outside the two support plates; the mold side plates are disposed outside the two support plates; one end of each of the two mould side plates and and one endof the middle plate are connected with a baffle plate disposed on the front end of the mould platform; and through holes are disposed on the mould side plates and the middle plate. Compared with the prior art, in a bracket of steel members of the same type, only one mould needs to be made, and a surface size and a hole position of the bracket are ensured; assembly can be quickly performed; duringan assembly process, the time of manual lofting and checking is reduced; large-scale production can be formed; the hole making precision of bolt holes and the working efficiency of assembling the bracket are greatly improved; the installation precision on site is ensured; and the mould has the characteristics of cyclic utilization.

The invention discloses a novel shaft sleeve unit. The novel shaft sleeve unit is characterized in that a shaft sleeve is co-axially arranged in a drill jig shell and internally provided with a through hole; two ends of the drill jig are formed into a small-circle action surface and a large-circle action surface, and a plane is formed on the large-circle action surface and tangent with the small-circle action surface. The novel shaft sleeve unit is small in size, portable, convenient to use, easy to operate and higher in drilling precision.