33results about How to "Affects dimensional accuracy" patented technology

A toolholder for a cutting tool is disclosed for use with a machine tool having a main shaft or spindle with a flared or tapered end socket. The toolholder has a tool-holding end for a cutting tool and a tapered shank end for placement in the tapered socket of the machine tool spindle. The toolholder also has an annular flange near its tapered shank, the flange or collar generally being used for location and gripping by a tool exchange mechanism. An elastic spacer ring is used and compressed between said flange and the face of said machine tool shaft in machining operations for dampening vibrations and flexing of the toolholder and cutting tool.

The invention relates to the technical field of PCBs, in particular to a production technology for a single-sided PCB. The technology sequentially comprises a single-sided copper foil substrate pretreatment step, a line coating and exposing treatment step, a line developing, etching and de-inking treatment step, a targeting hole treatment step, a solder resist pretreatment step, a solder resist developing step, a lettering treatment step, a molding treatment step, a testing step and an antioxidant treatment step. Surface polish-brush treatment is carried out on a copper foil substrate in a polish-brush manner; a photosensitive ink layer and a solder resist ink layer coat the surface of the copper foil substrate; relatively high adsorption capacity is provided among the photosensitive ink layer, the solder resist ink layer and the copper foil substrate; and the produced PCB is good in quality. A V-shaped board-dividing groove formed by cutting treatment on the copper foil substrate by a V-Cut process is free of a burr in subsequent board division. According to the production technology provided by the invention, targeting hole treatment is firstly carried out on the copper foil substrate; and then solder resist and baking treatment is carried out on the copper foil substrate, so that the dimensional accuracy of a targeting hole is high.

The invention provides an injection molding machine for producing plastic bottle caps, belonging to the technical field of moulds and solving the technical problems of poor running stability and the like of the injection molding machine in the prior art. The injection molding machine comprises a base, wherein a fixed mould plate and a movable mould plate are arranged on the base and are connected through a pull rod, and can form a plurality of mould cavities used for forming the plastic bottle caps after getting close, and after the plastic bottle caps are formed, openings of the plastic bottle caps are outwards arranged. The injection molding machine also comprises a piece taking device, wherein the piece taking device comprises a piece taking plate, a clamping structure capable of fixing or loosening the plastic bottle caps is arranged on the piece taking plate, a lifting mechanism capable of driving the piece taking member to go up and down circularly is fixedly arranged on a rack, a holding frame used for holding the plastic bottle caps is arranged on the rack, and a demoulding detection device used for detecting whether the plastic bottle caps drop from the mould cavities completely is arranged on the holding frame. The injection molding machine has the advantages of good running stability and the like.

The invention discloses a device for synchronously measuring axial displacement and radial displacement of a rigid coupler. The device comprises a supporting rod which is connected in opposite connecting holes of two half couplers in a penetrating mode, a support is fixedly installed on the supporting rod, an axial measuring device measuring the axial displacement of the coupler and a radial measuring device measuring the radial displacement of the coupler are arranged on the support, threads are arranged on the supporting rod, the supporting rod and the coupler are connected through a pair of nuts I which are arranged on the supporting rod and positioned on the two sides of the coupler, and the support is installed on the supporting rod in a sleeved mode and fixed through a pair of nuts II. The device is simple in structure and convenient to operate, by the adoption of the axial measuring device and the radial measuring device which are installed on the support, axial displacement deviations and radial displacement deviations of the rigid coupler can be measured simultaneously, accumulative errors caused by separated measuring are reduced to the maximum, and measurement accuracy is improved substantially.

The invention discloses a sloping cover sleeve product machining clamp. The sloping cover sleeve product machining clamp comprises a locating block, locating clamping jaws, a guide rod and a base, wherein the locating block comprises a lug boss raised in the middle and a supporting platform arranged on the edge; the locating block and the base are fixedly arranged, and center shafts of the locating block and the base are intersected; the base is fixedly connected to a machine tool; the lug boss is of a hollow structure, and through holes are formed in the side surfaces of the lug boss in directions vertical to the center shaft; the locating clamping jaws are arranged in the through holes, and first wedge-shaped surfaces are formed at one sides, which face to the center shaft of the lug boss, of the locating clamping jaws; and the guide rod is arranged in the hollow structure of the lug boss, the top of the guide rod is supported against the first wedge-shaped surfaces, and the bottom of the guide rod is connected to a feed shaft of the machine tool. The sloping cover sleeve product machining clamp has the advantages of good repeatability and accuracy consistency, high machining efficiency and reliability, good appearance quality of product surfaces, high size accuracy, good machining stability, high degree of automation, low cost, and easy maintenance and assembly and has good economic benefits.

The present invention provides a device and method of polymer photoresist ultrasound aging, belonging to ultrasonic application field, characterized in that the polymer photoresist ultrasound aging device includes an ultrasonic generator, an ultrasonic transducer, a worktable and a casing, the characteristics is that the worktable is connected with the ultrasonic transducer, the casing supports the worktable which is suspended with the transducer. The method of the polymer photoresist ultrasound aging is characterized in that the silicon is cleaned in the standard process, coated with the photoresist after dried, exposing under the uv, ensuring SU-8 adhesive crosslink after dried; the adhesive layer is processed with an ultrasound aging: the ultrasonic generator transmits a high frequency electrical signal to drive the ultrasonic transducer vibrate and transmitting to the worktable. The invention has effects and advantages of effectively reducing the internal stress of the polymer photoresist layer, avoiding phenomena of baseboard bend, stress concentration, sticking affecting the size precision and the structure of the adhesive layer, ensuring the process parameter have more elasticity, providing conditions in order to obtaining more effective, more diversified parameter combination, reducing the research and development costs.

The invention relates to a process for preparing a metal-based ceramic composite material through secondary pressure application. A device used in the process comprises a product forming die assembly, a cover die, a bottom plate, a press ejector rod, a workbench and a secondary pressurizing base plate, the workbench is installed on a press, the cover die is installed on the upper surface of the workbench in a matched mode, the bottom plate is matched with the middle of the cover die, the product forming die assembly is arranged on the bottom plate, the bottom face of the bottom plate abuts against the press ejector rod, the press ejector rod penetrates through the workbench, and the bottom plate and the product forming die assembly are controlled to move up and down in a cavity of the cover die through lifting of the press ejector rod. Powder is directly filled into the product forming die assembly, so that the preparation process of a prefabricated part is omitted; in the process of die-casting and metal cementation, a metal core part which is gradually solidified is subjected to secondary pressure application; and the prepared composite material is high in compactness and low in porosity, and the quality and performance of the product are greatly improved.

The invention relates to the technical field of bearings, and discloses precision bearing inner ring grinding equipment which comprises a workbench. A supporting column is welded to the top of the workbench; a fixing block is in contact with the top end of the supporting column; a fixing plate is welded to the surface of the fixing block; a motor is connected to the top of the fixing plate through a bolt; a fixing mechanism is arranged on the inner wall of the workbench; a cleaning mechanism is arranged at the bottom end of the fixing plate; a transmission gear is welded to the output end of the motor; a first gear and a second gear are engaged with the surface of the transmission gear; inner fluted discs are engaged with the surfaces of the first gear and the second gear; and rotary discs are rotatably connected to the bottom ends of the inner fluted discs. According to the precision bearing inner ring grinding equipment provided by the invention, automatic fixing of a bearing ring can be achieved through the fixing mechanism, so that the situation that the bearing ring shakes in the grinding process, and consequently the grinding precision is reduced is prevented; and meanwhile, the replacement speed of the bearing ring is increased, so that the working efficiency is improved, and convenience and rapidness are achieved.

Disclosed is a simple processing method of removing burrs of a non-metal holder inner hole and a end face junction. The external diameter of a non-metal holder (1) is D, and the width of the non-metal holder (1) is L. burr removing needs special tools. A push rod (3) is placed in a through hole of a jig (2) and the non-metal holder is arranged inside a clamping hole. The method includes the following steps: when a left hand or right hand turns the external diameter of the jig, the left hand or the right hand holds the special tools and removes the burrs of the inner hole at one end of the non-metal holder and the end face junction, pushes the push rod out of the non-metal holder from the clamping hole after burr-removing of one side is finished, relocating the non-metal holder into the clamping hole after burr-removing of the other side is finished, and the whole process of burr-removing of the inner hole at one end of the non-metal holder and the end face junction is finished by repeat of the above steps. Accuracy of the non-metal holder is not influenced, no scratch of a human finger is caused, labor intensity is lowered and working efficiency is improved.

The invention relates to the technical field of a manufacturing process of a radio frequency quadrupole single-vane pole head serving as a core component of a linear accelerator, in particular to a machining method for a modulation line of the radio frequency quadrupole single-vane pole head. According to the method, a trial cutting test of a cutter is performed before finish machining by a disc forming cutter, and appropriate machining parameters are selected; machining requirements are met through multiple cutting in the machining process, the machining accuracy of the modulation line of the single-vane pole head is detected by a trilinear coordinates measuring instrument and is better than the acceptance indicators, and the consistency is good; the whole machining and measuring process of the modulation line of the single-vane pole head needs to be performed in a constant temperature environment, the dimension error is controlled within plus/minus 20 mu m, the pole head profile tolerance is better than plus/minus 20 mu m, the pole head symmetry tolerance e is better than plus/minus 20 mu m, the surface roughness of the modulation line of the pole head reaches 0.8 mu m, and the stability and reliability of the performance of the radio frequency quadrupole linear accelerator are guaranteed effectively.

The invention discloses a cutting device good in safety and capable of machining conductive copper pipes of different specifications, and belongs to the technical field of conductive copper pipe machining, the cutting device comprises a supporting base, a feeding locking supporting assembly and a guiding assembly, the supporting base is of a T-shaped structure, and two feeding sliding rails are connected to the upper portion of the supporting base through screws. The floating supporting force can be provided for the floating grinding wheel through a floating supporting pressure spring, so that the floating grinding wheel can be tightly attached to the cut-off opening of a conductive copper pipe, polishing and deburring operation is conducted on the cut-off opening of the conductive copper pipe, the trouble of manual deburring is omitted, meanwhile, the situation that the end of the conductive copper pipe is subjected to large pressure during grinding, and the dimensional accuracy of the conductive copper pipe is influenced can be avoided, a V-shaped pressing groove is formed to press and fix the conductive copper pipe, the device can be suitable for pressing and cutting off the conductive copper pipes with different pipe diameters, automatic cutting-off machining of three copper pipes can be completed at a time, and efficiency is extremely high.

The invention relates to a machining and manufacturing method of a heat exchanger. The machining and manufacturing method comprises the following steps that A, the lower plane of an upper tube plate is machined; b, performing assembly welding and flaw detection on the upper tube plate and the top pup joint; c, all the machining faces, except for the lower plane of the upper tube plate, of the upper tube plate assembly are machined; d, drilling the upper tube plate and the lower tube plate; e, a plurality of other pup joints are subjected to assembly welding, flaw detection and heat treatment; f, the upper tube plate assembly and the short section assembly are installed, welded and subjected to flaw detection; g, mounting a pull rod, a sleeve and a baffle plate in the barrel; h, mounting a heat exchange tube in the barrel in a penetrating manner; i, assembling the lower tube plate; j, the tube heads are welded to the upper tube plate and the lower tube plate respectively, and the following sequence is adopted during welding: the tube heads of the heat exchange tubes adjacent to the pull rods are welded firstly, and then the remaining tube heads are subjected to regional cross symmetric welding; k, mechanically cutting off the extension part of the pipe head; l, performing local heat treatment; and M, finally installing a sealing head. Therefore, the size precision of the upper tube plate is greatly improved.

The invention discloses a method for machining a grooved thin-walled lock ring part. The method comprises the steps that cylindrical lathe cutting of a raw material is carried out, rough machining ofan inner hole is carried out, and the inner hole is reserved for machining allowance to obtain a semi-finished part; a groove grinding process is adopted, and a groove structure is machined through grinding at the end of the semi-finished part; and finish machining of the inner hole is carried out on the semi-finished part with the preset groove structure to obtain the grooved thin-walled lock ring part. the method combines the structural characteristics of the thin-walled lock ring part, cylindrical lathe cutting and rough machining of the inner hole are carried out firstly, and then the groove grinding process is adopted to achieve the machining of a thin-walled groove; through machining the inner hole in two steps, the accuracy of the inner hole is improved, and during the groove grinding process, the wall thickness of the part is increased, and the difficulty of the groove grinding process is reduced; according to the method, a precise surface can be obtained on the part, the generation of large-area burrs is avoided, machining errors of the part are effectively reduced, the probability of fracture of a thin-walled tooth is reduced, the quality of the part is improved, the machining process is simple, and the percent of pass is high.