78results about How to "Guaranteed machining accuracy requirements" patented technology

An automatic machining center with high frame and 5 shafts for turning and milling is composed of a high frame consisting of left and right vertical columns and dual horizontal beams, rotary bench and its base, speed-regultable DC motor, gear box, the rolling guide tracks X, Y and Z, rotating axles C1 and C2, the main shaft for turning and milling and tool library.

The invention discloses a novel clamp for machining a thin-wall cylinder part. The novel clamp comprises a mandrel, a positioning plate, connecting pipes, spacer bushes, expansion components and a pressing plate. The positioning plate is fixed to one end of the mandrel. The connecting pipes are fixed to the mandrel and tightly attached to the positioning plate. The spacer bushes, the expansion components and the pressing plate are installed on the connecting pipes. The novel clamp for machining the thin-wall cylinder part is easy to manufacture, operation is convenient, multiple supporting points exist on the clamp, the area is large, the good expansion performance is achieved, the part can be prevented from deforming and vibrating in the machining process, the machining precision of the part is effectively ensured, and the use requirement of the part is effectively met.

A precision production method of a front brake callipers body of a light bus comprises the following steps: A. a circular arc of a working surface of a callipers body cylinder is milled; B. a front support lug hole of a support lug of the callipers body is processed; C. a reverse support lug hole of the support lug of the callipers body is processed; D. a cylinder hole of the callipers body is processed; E. an oil inlet hole and a vent hole of the callipers body are processed. The invention has the characteristics of low equipment investment, high working efficiency, stable product quality and short parts production period. After being clamped by a corresponding fixture, the brake callipers body can be completely processed by a correspondingly cheaper vertical machining centre, thus the investment is greatly reduced, and the cost is reduced by 1 / 2, meanwhile, accurate position of related hole distances guarantees each processing precision requirement of the parts. The processed brake callipers body can smoothly realize an automatic assembly on a full-automatic assembly line, and the product quality is not worse than that of the same parts imported from Europe, and the purchasing cycle is shortened to be 20 days from the original 90 days.

The invention relates to a control valve for an oil atomizer. The control valve comprises electromagnets, a sealing bolt pin, electromagnet springs, an armature, an armature guide rod, control valve bases, a restriction orifice and an oil atomizer body. The control valve is characterized in that the sealing bolt pin is arranged in inner holes of the control valve bases; a high-pressure sealing face is formed by the outer circle surface of the sealing bolt pin and the inner holes of the control valve bases; a valve chamber is defined by the sealing bolt pin, the control valve base and the restriction orifice and is communicated with a control chamber through an oil outlet path; the sealing bolt pin is in rigid connection with the armature guide rod and is pressed on a supporting face at the upper end of the restriction orifice under downward elastic force of the electromagnet springs; a closed portion is arranged on the lower end face of the sealing bolt pin; a high-pressure sealing face is formed by the supporting face of the lower end of the closed portion and the supporting face of the upper end of the restriction orifice; a blind hole is formed in the center of the restriction orifice; an oil returning cavity is formed between the blind hole and the lower end face of the sealing bolt pin and is communicated with an oil returning channel. The control valve can be closed only through small spring pre-tightening force.

The invention discloses a turning clamp for plate part hole and inner annular groove machining. The turning clamp comprises a clamp body. A clamp installation groove is formed in the clamp body. The clamp installation groove comprises an X-axis positioning reference plane, a Y-axis positioning reference plane and a Z-axis positioning reference plane. The four corners of the X-axis positioning reference plane are provided with interference receding grooves. The two sides of the upper portion of the X-axis positioning reference plane are each provided with a pressing block body and provided with compressing bolts. A pressing block boss is arranged at the tail end of each pressing block body. A lateral abutting bolt hole is formed in the side face of the clamp body. A lathe installation shaft is arranged on the back face of the clamp body. Due to the fact that the special clamp is adopted for machining holes and inner annular grooves of plate parts, the clamping efficiency of parts to be machined is improved, the productivity is increased by about 50%, strict positioning precision control is achieved, the part machining precision requirement is ensured, the yield of the machined parts reaches 100%, and the clamp material and manufacturing costs are saved by about 70%.

The invention relates to a ceiling joist with stable structure and relative adjusting fixer, especially providing a ceiling joist mounted with transcendental hidden inserted ceiling. Wherein, it comprises a main joist, a T-shape joist under the main joist and crossed with said main joist, a suspension member connecting the T-shape joist and the main joist, and an adjusting fixer between the connected parts of main joist and T-shape joist; the adjusting fixer is formed by a clamper mounted on the top bar at the top of T-shape joist and the fixing element for fixing the clamper and the top bar; the upper surface of clamper is plane compacted contacted with the lower surface of main joist; said clamper is in gate structure. The invention can solve the problem that the connection between main joist and T-shape joist is instable, and the ceiling will fall.

The invention discloses a hexagonal center grinding method. The hexagonal center grinding method is characterized by comprising the following steps: step a, an auxiliary tool of a corresponding size is selected, wherein the auxiliary tool is of a regular hexagonal prism structure and the six surfaces of the auxiliary tool are taken as working faces; step b, one external surface of the auxiliary tool is fitted and fixed with the upper surface of a sine disk, the lower end of the sine disk is directly supported on a base, and the middle of the sine disk is supported on the base by use of a block gauge; step c, the hexagonal center is mounted in the central hole of the auxiliary tool and in tight fit with the central hole of the auxiliary tool, and the first small plane of the hexagonal center is ground by use of a grinding wheel; step d, after one small plane of the hexagonal center is ground, the auxiliary tool is rotated so that the corresponding plane of the auxiliary tool can be fitted and fixed with the upper surface of the sine disk, and then the other small planes of the hexagonal center are ground by use of the grinding wheel. As the auxiliary tool adopted in the hexagonal center grinding method is of the regular hexagonal prism structure, the six small planes of the hexagonal center are well kept equal in size and uniform in inclination angle in the peripheral direction.

The invention discloses a sectional machining structure of a large stamping die set. The sectional machining structure comprises a plurality of sub die plates for machining the large stamping die set, wherein every two adjacent sub die plates are detachably and fixedly connected into a female die plate, and at least one common locating reference is arranged on each of the opposite end faces at intervals when every two adjacent sub die plates are connected. The structure meets machining precision requirements, can effectively reduce the machining cost and the machining difficulty, improve the machining safety at the same time, is convenient to carry, is applicable to general machining centers, and is not limited to an ultra large machining center.

The invention provides an optimization welding method for a gear and a conjunction gear, and belongs to the field of transmission manufacturing. The inner side of the to-be-welded position of the matched surface of the shifting gear and the conjunction gear is sequentially provided with a first cavity for reducing the grinding area of the matched surface and a second cavity communicated with the first cavity. The second cavity is communicated with the opposite side of the to-be-welded position of the matched surface, and then exhausting in the welding process is achieved. The requirements for assembly accuracy of a part are met, machining cost is reduced, finally the effects that the welding position is evenly stressed and welding stability is high after welding is finished are achieved, a formed welding joint is located on the outer side of the end face of the part, and welding work and the quality inspection of the welding position are facilitated.

The invention discloses a chamfer grinding device. The chamfer grinding device comprises an L-shaped knife edge block, a fixing screw, a pressing rod, a pressing screw and a base. A kidney-shaped groove is formed in one end of the knife edge block, and a knife edge is arranged at the other end of the knife edge block. A V-shaped groove is formed in the clamping end face of the base, and a 60-degree angle is formed between the bottom end face of the base and the machining plane. The pressing rod presses a workpiece into the V-shaped groove of the base through the two pressing screws on the two sides, the knife edge end of the knife edge block is tightly attached to the groove face of the upper end of the workpiece, and the other end of the knife edge block is fixed to the base through the kidney-shaped groove and the fixing screw. A 90-degree V-shaped groove is formed in the clamping end face of the base. The 60-degree knife edge is arranged at the knife edge end of the knife edge block. The fixing screw is a hexagon socket head screw M5*12. The pressing screws are hexagon socket head screws M8*40. The chamfer grinding device is simple in structure and quick to install; machining accuracy requirements are guaranteed, machining procedures are simplified, and meanwhile the machining period is shortened; and production efficiency is greatly improved.

The invention provides a cerium dioxide / nano-diamond composite abrasive with a core-shell structure, a preparation method thereof, and a polishing solution for ultra-precision polishing of sapphire. The cerium dioxide / nano-diamond composite abrasive material with the core-shell structure is a cerium dioxide nano-rod on which nano-diamond particles grow, and the novel composite abrasive material not only can prevent diamond from scratching sapphire and remarkably reduce the surface roughness of the sapphire, but also can effectively improve the polishing efficiency. The invention also discloses the polishing solution for ultra-precision polishing of sapphire. The cerium dioxide / nano-diamond abrasive in the polishing solution is uniformly dispersed, is not easy to agglomerate, is easier to form a stable turbid liquid system, and is uniformly dispersed and not layered for a long time.

The invention discloses a machining method for a trapezoidal threaded hole chuck claw and relates to machining methods. Through the machining method, the problem that through an existing machining process, the machining precision of a trapezoidal threaded hole chuck claw cannot be ensured is solved. The machining method comprises the following steps of rough milling, rough drilling, rough boring,heat treatment, grinding of an end face D, finish milling, finish hole turning, cutting, finish boring, planing of antiskid teeth, heat treatment of the antiskid teeth, chamfering of all edges and printing of a figure number. The machining method is used for machining of the trapezoidal threaded hole chuck claw.

The invention discloses a rotating hinge water seal seat boring device. The rotating hinge water seal seat boring device comprises a power system, a force transfer system and a boring system; the power system comprises a sliding table seat, a sliding table and a boring head, wherein the boring head is connected with the sliding table and slides along the sliding table seat, the boring head is connected with the force transfer system, and the force transfer system is connected with the boring system; the boring system comprises a plurality of support seats, connecting rods, a connecting sleeve and a boring rod, wherein a radial adjusting mechanism is arranged on each support seat, the boring rod corresponds to an axial hole to be bored, and the two ends of the boring rod are respectively, coaxially and rotatably connected with the radial adjusting mechanism on each support seat; every two adjacent support seats are respectively and rotatably connected through the connecting rod. The invention also discloses a method for boring a rotating hinge water seal seat by using the boring device. The boring device and the boring method are simple in structure and convenient to use, the coaxiality of each hinge axle hole of the rotating hinge water seal seat is ensured by means of the coaxiality of the support seats, and the machining precision requirement can be met.

The invention discloses a special machine tool for roller boring, and the special machine tool is an improved horizontal boring mill. The special machine tool comprises a lathe bed. The lathe bed is provided with a front stand column, a rear stand column and a workbench. An upper sliding base and a lower sliding base are sequentially arranged below the workbench. A main shaft box is arranged on the front stand column. A rear supporting frame is arranged on the rear stand column. A facing head is arranged on the end face of the main shaft box. The main shaft box is internally provided with a speed change transmission structure used for driving the movement of a main shaft. An output shaft of the speed change transmission structure is in transmission connection with the main shaft. The speed change transmission structure comprises an input shaft, an input transmission shaft, a first-level speed change shaft, a second-level speed change shaft, an output transmission shaft and the output shaft. The input shaft is in transmission connection with an outside power output shaft, the input transmission shaft is in transmission connection with the input shaft, the first-level speed change shaft is in transmission connection with the input transmission shaft, the second-level speed change shaft is in transmission connection with the first-level speed change shaft and the output transmission shaft, and the output transmission shaft is in transmission connection with the output shaft. The special machine tool can guarantee boring machining precision and also has the beneficial effects of being simple in structure, low in noise and the like.

The invention relates to the field of machining, in particular to a special clamp for drilling a cambered surface of a shaft part. The special clamp for drilling the cambered surface of the shaft partcomprises a base (2) and a drill plate (4); a baffle (3) with a semi-cylindrical cavity, a positioning block A and a supporting plate (6) are sequentially arranged on the base (2); centers of the baffle (3), the positioning block A and the supporting plate (6) remain on the same plane; a positioning block B with a semi-cylindrical cavity is arranged on the drill plate (4), and the positioning block B and the positioning block A are concentric when closed; the drill plate (4) is connected with the base (2) through a cylindrical pin (12) to form a hinged mechanism, so that the purpose of simplyand fast assembling and disassembling the part is achieved; a swing bolt (10) is arranged on the edge of an open end of the formed hinged mechanism; and a drill sleeve (5) is arranged on the drill plate (4). The special clamp has the characters that the structure is simple, operation is convenient, the cost is saved, and the working efficiency is improved.

The invention relates to a large-scale marine three-roller bending machine. A bending machine rack is installed on the upper surface of a bending machine base; an upper roller flexibility compensation module, an upper roller and a lower roller are sequentially installed in the bending machine rack from top to bottom; a supporting roller module is installed on the bending machine base; the upper roller and the lower roller are connected with upper and lower roller driving modules respectively; a spring support frame is arranged behind the bending machine rack; the interior of the spring support frame is connected with a plate auxiliary pressure roller rack and a plate auxiliary pressure roller through springs; a second hydraulic cylinder and a second hydraulic cylinder base are installed on the lower sides of the two sides of the spring support frame; the second hydraulic cylinder base is fixedly connected to the bending machine base; a plate auxiliary supporting module is arranged behind the spring support frame and installed on a guide rail seat; the guide rail seat is matched and in guiding connection with a guide rail fixed to the bending machine base; the back end of the guide rail seat is connected with a first hydraulic cylinder which is installed on a first hydraulic cylinder seat; and the first hydraulic cylinder seat is fixed to the bending machine base. The large-scale marine three-roller bending machine can greatly improve the rolling accuracy of plates.

The invention discloses a graphite film rolling equipment deviation rectifier. The graphite film rolling equipment deviation rectifier comprises a base (1), a main support (2), bearing pedestals (3), a conveying roller (4), a sensor support (5), a sensor transome (6), a distance sensor (7), a graphite film (8) and a hydraulic cylinder (9), wherein the two bearing pedestals (3) are symmetrically fixed to the top of the main support (2), the conveying roller (4) is fixedly arranged on the two bearing pedestals (3), the sensor support (5) and the sensor transome (6) are fixed together, the distance sensor (7) is fixedly arranged on the sensor support (5), the hydraulic cylinder (9) is fixed above the base (1), and the front end of the hydraulic cylinder (9) is connected with the lower side of the main support (2). According to the invention, via precise pushing of the hydraulic cylinder, the whole main support can move left and right precisely, the position of the graphite film on the conveying roller can be regulated precisely, and thus the requirement on processing precision of the graphite film can be met.