1432 results about "Small hole" patented technology

The invention provides a leakage point pressure difference response high-strength blocking agent based on iron ion dynamic cross-linked latex and a preparation method thereof, and the raw materials comprise the following components in parts: 60-120 parts of latex, 60-120 parts of deionized water, 5-15 parts of an activator, 5-10 parts of a defoamer, 100 parts of a terminator, 100 parts of a stabilizer, 10 parts of a 20% ferric chloride solution, and the balance of water. Rubber particles are dynamically crosslinked through ferric ions, and the plugging strength is remarkably improved. Compared with a traditional differential pressure plugging agent, the plugging strength for small holes with the diameter of 0.5 mm reaches 35.67 MPa and is improved by about 238%, and the plugging strength for large holes with the diameter of 1 mm reaches 9.68 MPa and is improved by about 428%. And the plugging device is suitable for plugging conditions with higher leakage point pressure difference. In addition, the plugging agent can realize rapid and high-strength plugging of an underground pipe column, and provides a more efficient and more reliable solution for well site construction.

The utility model discloses a deep ring inner diameter precision measuring device which comprises a fixed rod, a movable rod and a check gauge, the fixed rod and the movable rod are connected through a rotating shaft to form an equal armed lever mechanism, the left end of the fixed rod is provided with a measuring head, and the right end of the fixed rod is provided with a dial indicator through a meter fixing handle; the left end of the movable rod is provided with a measuring head, the right end of the movable rod is in contact with the head of the dial indicator, a tension spring is arranged between the fixed rod and the movable rod, and the check gauge is a special standard comparison ring for checking the zero position. According to the utility model, precise measurement of the inner diameter of the deep inner ring can be effectively implemented, and the problem that a general inner hole measuring device cannot avoid interference of an external small hole to detect an inner ring groove is simply, conveniently and economically solved.

The invention discloses a methanol direct injection injector, comprising: an injector body and a solenoid valve component, an orifice plate, a control valve seat and a needle valve component which are installed below the injector body through a tight cap of the injector body; wherein the solenoid valve component is located above the orifice plate, the orifice plate is located above the control valve seat, and the control valve seat is located above the needle valve component; a first and a second straight hole are arranged on the orifice plate, an inclined hole, a third straight hole and two small holes are arranged on the control valve seat, a needle valve component control chamber is arranged on the upper part of the needle valve component, the lower end of the first straight hole is communicated with the lower end of the second straight hole on the orifice plate and the upper ends of the inclined hole, the third straight hole and the two small holes on the control valve seat, and the lower ends of the inclined hole, the third straight hole and the two small holes on the control valve seat are communicated with the needle valve component control chamber; the opening and closing of the second straight hole on the orifice plate is controlled by turning on and off the power of the solenoid valve component, and then the methanol liquid pressure in the control chamber of the needle valve component is controlled to realize the start of the needle valve component injection.

The utility model discloses a leveling mechanism of an airing rack assembly of a clothes airing system. The leveling mechanism comprises the airing rack assembly, two steel wire ropes and two adjustable assemblies. The adjustable assembly comprises a steel wire rope fixing piece and an adjusting bolt. The tail end of the steel wire rope is provided with a plug with the diameter larger than that of a steel wire rope body. The steel wire rope fixing piece is provided with a connecting hole, the connecting hole comprises a large hole part and a small hole part which are transversely communicated, the steel wire rope penetrates through the large hole part and then transversely moves to enter the position where the steel wire rope penetrates through the small hole part, and the plug is blocked by the edge of the small hole part and limited to the lower side of the steel wire rope fixing piece; the adjusting bolt penetrates through the large hole part to be screwed on the airing rack assembly and limits transverse movement of the steel wire rope, and vertical displacement between the adjusting bolt and the steel wire rope fixing piece is limited through the limiting assembly; the tail end of the steel wire rope is limited and fixed with the steel wire rope fixing sheet; by screwing the adjusting bolt, the height of the steel wire rope fixing piece relative to the airing rack assembly is adjusted, and therefore leveling of the airing rack assembly is achieved; the device has the advantages of simple structure, convenience in installation and labor-saving and convenient height adjustment.

The invention relates to the technical field of steel pipe machining, and discloses a continuous punching device for steel pipe machining and a using method thereof.The continuous punching device for steel pipe machining comprises a workbench and further comprises an L-shaped frame which is arranged at the top of the workbench in a sliding mode; the supporting and clamping assembly is arranged at the top of the workbench, and the supporting and clamping assembly is used for supporting and clamping the steel pipe; the drilling assembly is arranged on the transverse edge of the L-shaped frame, and the drilling assembly is used for drilling the steel pipe; and the hole grinding assembly is arranged on the drilling assembly, and the hole grinding assembly is used for removing burrs adhered to the drilled hole in the steel pipe. Before drilling, the drill rod can drill a small hole in the steel pipe to eliminate stress generated during subsequent drilling of the drill cylinder, the situation that the steel pipe cracks during drilling is avoided, burrs on the hole formed in the steel pipe can be ground and removed, drilling and burr cleaning are convenient and fast, and the using effect of the equipment is improved.

The invention discloses a solid waste recycling forming machining die, and relates to the technical field of bicycle production waste reutilization, the solid waste recycling forming machining die comprises a lower die mechanism, an upper die mechanism is arranged on the lower die mechanism, a pressing mechanism is arranged on the upper die mechanism, and a male die set is arranged in the middle of the bottom wall of an upper die base; the material pressing mechanism comprises a first spring and a material pressing plate which are arranged on the upper die base, and further comprises an elastic ejector block set arranged on the material pressing plate and a guide hole site set formed in the material pressing plate in an up-down penetrating mode. The die has the advantages that the same die carries out stepped continuous punching operation, punching stress can be reduced, and the probability of deformation of the disc brake during punching is reduced; residual stress existing in the punched disc brake disc can be redistributed through attaching and pressure maintaining, and the situation that due to the fact that large holes and small holes in the disc brake disc are evenly and densely distributed in position, local deformation is generated is prevented; and the elastic ejector block group applies uniform elastic pressing force to the disc brake disc, so that the probability of deformation of the disc brake disc during rigid demolding is reduced.

The present invention relates to the technical field of casting of automotive parts, and specifically to a casting sand mold forming device and method for automotive parts. An upper microporous plate and a lower microporous plate are arranged at intervals up and down in the air guiding flow channel. The lower microporous plate is located in the air guiding flow channel, and the upper microporous plate is pressed on the stepped surface communicating between the annular groove and the air guiding flow channel. The upper microporous plate and the lower microporous plate are connected by multiple groups of air pipes. The beneficial effects are as follows: By adding a pouring and ramming component to the existing casting process, multiple groups of sand injection channels can be used to selectively choose the sand injection position, and the sand injection position can be selected according to the characteristics of the model part to ensure complete filling of the small holes and grooves. At the same time, the air guiding flow channel is used to further carry out negative pressure air extraction on the sand mold after extrusion and compaction, reduce the gap between the sand bodies, improve the overall ramming strength, ensure the integrity of the sand mold after overall demolding, avoid collapse, and greatly improve the qualified rate.

The invention relates to the field of angle valves, in particular to an anti-surge and anti-blocking angle valve. The angle valve comprises a valve body, a valve cover, a sleeve, a valve element and an executing mechanism. The valve body is provided with a middle cavity, an inflow runner and an outflow runner, the valve cover covers the end part, far away from the inflow runner, of the middle cavity; the sleeve is installed in the middle cavity and coaxially arranged with the inflow runner, the sleeve is provided with a small hole section and a large hole section in the axial direction, a plurality of small liquid outlet holes are formed in the peripheral wall of the small hole section, a plurality of large liquid outlet holes are formed in the peripheral wall of the large hole section, and the small hole section is closer to the inflow runner than the large hole section; the valve element is installed in the sleeve in a sliding mode and can slide back to the inflow runner to avoid part of the large liquid outlet holes. The executing mechanism is connected with the valve element and used for driving the valve element to move towards the inflow runner to close the inflow runner and driving the valve element to move back to the inflow runner to open the inflow runner. Vibration and noise of fluid in the angle valve can be effectively reduced, surge of an applied pipeline is prevented, and vibration reduction, noise reduction and blockage prevention are both considered.

The utility model belongs to the technical field of additive manufacturing, and discloses an air outlet mechanism and additive manufacturing equipment. The air outlet mechanism comprises an air inlet assembly and a rectifying part, the air inlet assembly comprises an air inlet channel, one end of the air inlet channel is connected with an air source, and the other end of the air inlet channel is communicated with an air bellow; the rectifying part is arranged in the air inlet channel and is perpendicular to the air inlet direction in the air inlet channel, a first hole set and second hole sets located on the two sides of the first hole set are formed in the rectifying part, the hole diameter of the first hole set is larger than that of the second hole sets, and air entering the air inlet channel from the air source enters the air bellow after passing through the first hole set or the second hole sets. The air speed of the air close to the pipe wall of the air inlet channel is higher, the second hole set with the smaller hole diameter is arranged to rectify the part of the air, the air flowing through the rectifying piece is uniform in overall air speed, and therefore the quality of a printed piece is improved.

The invention provides a ball joint mechanism with a compact structure, which comprises a solid ball body and a shell capable of accommodating the ball body, and a ball handle is arranged at the upper part of the ball body; a stepped through hole is formed in the position, corresponding to the ball handle, of the ball body, the stepped through hole is composed of a small hole section and a large hole section, the small hole section is a threaded hole, the large hole section is an unthreaded hole, an opening of the small hole section faces upwards and is located on the ball handle, and an opening of the large hole section faces downwards and is located on the spherical surface of the ball body; an adjusting screw plug, a spring and a plunger are sequentially installed in the stepped through hole from top to bottom, one part of the adjusting screw plug is in threaded fit with the small hole section, the other part of the adjusting screw plug is located in the large hole section, the outer side end of the plunger can extend outwards from an opening of the large hole section under the elastic force action of the spring, and the end face of the outer side end of the plunger is a spherical surface; a curved surface seat is arranged on the lower portion of the shell, the curved surface seat is provided with an inner concave surface, and the outer side end face of the plunger is in contact fit with the inner concave surface of the curved surface seat. The ball body in the structure can obtain large damping feeling during rotation and is very smooth during rotation.

The invention discloses a linkage device, an integrated main control unit and an ABS brake system.The linkage device comprises a valve body, a piston assembly and a one-way sealing element, the valve body comprises a first cavity, a second cavity and a second oil way, and the first cavity is communicated with the second oil way and the second cavity; the piston assembly slides in the first cavity in a reciprocating mode along the axis, part of the piston assembly can enter the second oil way, a gap is formed between the piston assembly and the valve body, a plurality of small holes are evenly formed in the side wall of the piston assembly, the piston assembly is provided with an elastic element, and the one-way sealing piece is arranged in the annular groove of the valve body and located on the outer side wall of the piston assembly. The one-way sealing piece is in sliding connection with the piston assembly, and the one-way sealing piece and the small holes jointly serve as a structure for controlling opening and closing of the internal liquid channel. The linkage device solves the problems that in the prior art, a one-way oil seal of a linkage device is prone to failure, the pressure relief hole diameter is too small, and then the efficiency and safety of a braking system are affected.

The present invention discloses a concentrated water regulating valve, comprising: a valve body, which has a water inlet, a water outlet and a discharge port, and a valve cavity is formed inside the valve body; a partition component, which is arranged in the valve body and divides the valve cavity into a first cavity and a second cavity, and a hole system penetrating the first cavity and the second cavity is opened on the partition component, the water inlet and the water outlet are connected to the first cavity, and the discharge port is connected to the second cavity; a valve core, which is arranged in the second cavity to change the flow cross section of the hole system; wherein: the first cavity is arranged as a columnar cavity; at least the water inlet is extended to the first cavity along the tangential direction so that the concentrated water enters the first cavity through the water inlet and then flows in a rotation. By extending the water inlet to the first cavity along the tangential direction, the hole system is continuously flushed to a large extent, and thus the hole system can be effectively prevented from being blocked due to crystallization, especially the end of the hole system where the hole opening is smaller can be effectively prevented from being blocked.

The utility model discloses a special glass slide for a stimulated Raman scattering imaging microscope, which comprises a glass slide, a cover glass and a buckle, the glass slide is in limit connection with the cover glass through the buckle, a sample groove is arranged on the glass slide, the cover glass covers the sample groove, so that a cavity is formed between the glass slide and the cover glass, and the sample groove is arranged in the cavity. And the side surface of the glass slide is provided with at least two small holes which are directly communicated with the inner cavity of the sample groove. According to the utility model, water evaporation can be prevented, bubbles can be avoided, water can be replenished without uncovering the cover glass, and laser is ensured to be focused on the same plane of a sample during imaging.

The utility model discloses an S-shaped swash plate structure of a C-shaped liquefied natural gas (LNG) ship liquid cargo tank, relates to the technical field of C-shaped LNG ship liquid cargo tanks, and is used for solving the problem of LNG sloshing in the C-shaped LNG ship liquid cargo tank. The left view of the swash plate body is S-shaped, the front view of the swash plate body is circular, an opening is formed in the swash plate body, the front view diameter of the swash plate is consistent with the inner diameter of the LNG ship liquid cargo tank, and the edge of the swash plate extends to serve as a connecting part and is connected to the tank wall of the LNG ship liquid cargo tank through bolts. Two S-shaped swash plates are arranged in the liquid cargo tank and symmetrically arranged on the inner wall of the C-shaped LNG ship liquid cargo tank, the distance between each S-shaped swash plate and the center of the LNG ship liquid cargo tank is 0.25 times of the total length of the LNG ship liquid cargo tank, and the aperture of each swash plate is 0.5 m. After the C-shaped LNG ship cargo tank oscillation suppression device is adopted, liquid is blocked by the oscillation suppression plate, oscillation is reduced, the liquid can freely flow through a small number of small holes in the oscillation suppression plate, the phenomenon that the oscillation is more violent due to liquid accumulation is avoided, and the oscillation suppression effect on the C-shaped LNG ship cargo tank is remarkable.

The invention provides a drilling processing method for a ceramic substrate. The drilling processing method for the ceramic substrate comprises the following steps: forming a large hole in the ceramic substrate by adopting laser drilling, wherein the aperture of the large hole is 0.25-5mm or is 0.5 times greater than the thickness of the ceramic substrate; filling the macropores with a composite material containing a ceramic filler and thermosetting resin, and forming a supporting layer through a curing process; and the supporting layer is mechanically drilled to form small holes, and the hole diameter of the small holes is smaller than that of the large holes. According to the ceramic substrate drilling machining method, through stepped drilling of laser taper hole guiding, composite material filling and mechanical precision drilling, the problem that small holes of a thin substrate are prone to cracking during machining is solved, the yield is increased, the risk of breakage of a hard drill bit for mechanical drilling can be reduced, machining time is shortened, and the production cost is reduced; the drilling processing method is compatible with various ceramic substrates, and can solve the problem of multi-material integration of electronic packaging.

The utility model relates to the technical field of machining, and discloses a small hole cutter structure based on modular design, which solves the problem that the conventional small hole cutter needs to be detached and cleaned, so that the operation is relatively tedious, and comprises a mounting frame, a mounting plate is fixedly mounted at the top of the mounting frame, and a small hole cutter is arranged at the bottom of the mounting frame. A rotating mechanism is arranged on the small hole cutter, a cleaning mechanism is arranged in the mounting frame, the cleaning mechanism comprises two L-shaped round rods symmetrically fixed to the inner bottom wall of the mounting frame, and the outer sides of the two L-shaped round rods are movably sleeved with sliding plates; according to the small-hole tool clamping device, the two sliding blocks can get close to each other conveniently through cooperation between the air cylinder and the lifting plate and cooperation between the stand column and the movable rod, the small-hole tool is clamped through cooperation between the spring and the sliding plate and cooperation between the L-shaped round rod and the transverse plates, and the surface of the small-hole tool can be cleaned conveniently through the bristles when the small-hole tool ascends; therefore, the small-hole cutter does not need to be detached and cleaned.

The utility model discloses a quick plug structure, which comprises a first pipe joint, a second pipe joint and a limit component, the first pipe joint and the second pipe joint are mutually plugged, the limit component is used for axial limit, the limit component comprises a limit groove, a plug hole and a plug pin, and the plug hole penetrates through the inner wall of the first pipe joint; the limiting groove is formed in the outer wall of the second pipe joint, the plug pin is provided with an acting section, the acting section penetrates through the inserting hole, the side portion of the acting section is limited in the limiting groove at the same time, the first pipe joint sequentially comprises a large inner hole section and a small inner hole section from a port of the first pipe joint, and a step is formed at the junction of the large inner hole section and the small inner hole section. The insertion hole is formed in the large inner hole section in a penetrating manner; the second pipe joint sequentially comprises a sealing section and a limiting section from a port of the second pipe joint, the limiting groove is formed in the limiting section, and the sealing section is inserted into the small inner hole section in a sealed mode. According to the utility model, the first pipe joint adopts a large and small hole mode, so that the sealing section is not easy to cut when passing through the insertion hole of the large inner hole section during assembly, and the sealing effect can be ensured.

The utility model discloses a damping sleeving block and a fixing assembly for an extension bar of a corner marking instrument. The damping sleeving block comprises a base with a mounting hole; the upper surface of the base is fixedly connected with a vertical fixing block, and a small hole is formed in the upper portion of the fixing block. The lower end of an elastically deformable sheet is fixedly connected with the base, and the upper end of the elastically deformable sheet is fixedly provided with a sheath for sleeving the extension bar; the thin sheets and the fixing blocks are arranged in parallel at intervals, a plurality of damping components are arranged between the thin sheets and the fixing blocks, and the two ends of each damping component abut against the corresponding thin sheet and the corresponding fixing block respectively; one end of the sheath is inserted into the small hole, and a gap is reserved between the outer wall of the sheath and the inner wall of the small hole. The device is simple and reliable in structure and convenient to install and maintain, meanwhile, the influence of external vibration on the corner mark instrument is isolated, meanwhile, the external vibration transmitted to the installation support is isolated through the damping effect of the stainless steel elastic piece and the spring, and meanwhile vibration of the fixed extension rod of the corner mark instrument can be controlled through the stainless steel elastic piece, the spring and the sheath.

The present invention discloses a spot measurement and attenuation device for laser debugging, which relates to the field of laser testing technology. It includes a light focusing seat and a plurality of adjustment slides, each of which includes a sliding block, and the outer wall of each sliding block is fixedly provided with a connecting block, and the outer wall of each connecting block away from the corresponding sliding block is fixedly provided with a first fixing seat, and the outer wall of each first fixing seat is fixedly provided with a mounting frame. The elastic plate is driven away from the sliding cover by pulling the control blocks on both sides. When the pinhole screen is installed, the control block is released, and the elastic plate is reset under the elastic action of the elastic compression spring to clamp and fix the sliding cover again. The tight fit between the pinhole screen and the sliding cover ensures the overall stability and measurement accuracy of the device, and the cooperation between the elastic plate and the elastic compression spring effectively avoids the problem of loosening of the device due to external vibration or improper operation.

The utility model discloses a novel hole position degree inspection tool which comprises a bottom plate, a positioning assembly, a fixing assembly and a hole position detection pin assembly. The positioning assembly is used for realizing reference positioning of the to-be-tested piece; the fixing assembly is used for pressing and fixing the to-be-tested piece; the hole position detection pin assembly comprises a large hole detection pin piece and a small hole detection pin piece, and is used for achieving the detection of the position degree of a corresponding hole of a to-be-detected piece. The large hole detection pin member and the small hole detection pin member respectively comprise a positioning sleeve, a detection pin and an elastic member. When the elastic piece is not subjected to external force, the elasticity of the elastic piece can enable the detection end of the corresponding detection pin to be positioned in the positioning sleeve; when the elastic piece is pressed, the elastic piece is compressed, and the detection end of the corresponding detection pin can penetrate through the positioning sleeve to be inserted into the corresponding hole of the standard piece. According to the utility model, the detection pin can be inserted into the corresponding hole of the member to be detected by pressing the detection pin to detect the position degree of the hole, the detection process is convenient, and the detection pin is fixed through the elastic member to prevent the detection pin from being lost.

The present invention discloses a deep small hole machining method combining multi-objective optimization and adaptive control, which includes: designing a two-factor three-level orthogonal experiment table, conducting experiments according to process parameters, and statistically analyzing experimental data; collecting torque signals in real time, studying the characteristics of torque signals, and determining the torque change rate threshold θ during the safe machining process of deep small holes; establishing and verifying a response surface quadratic function model; optimizing the response surface quadratic function model to obtain the best combination of process parameters under constraint conditions; using the best combination of process parameters as the initial data for machining, driving the machine tool to start drilling, and monitoring the torque signal in real time during the machining process to adaptively generate control signals; when the torque change rate is greater than the preset change rate threshold θ, controlling the machine tool to retract the tool, chip removal and cooling, and continuing machining after cooling is completed until machining is completed. The present invention can machine deep small holes with high quality, high efficiency and stability, the machining process is stable and efficient, and the machining result has high precision.

The application provides a novel high-temperature-resistant small-hole tilting-pad bearing which is mainly composed of a bearing shell and a metal wire mesh structure, adopts a tilting-pad structure with S spring flexibility, is provided with micro grooves on each pad, and is provided with small holes on the micro grooves as working surfaces for supplying gas to form a gas film. The left and right two parts of the bearing shell are integrally machined by using electric spark technology and are connected and fixed by using cylindrical pins. Since the throttler, the flow channel and the shell are integrally machined, the bearing has the characteristics of high-temperature resistance. The metal wire mesh structure is embedded in the gap between the bearing body and the pad, the metal wire mesh structure provides flexible support for the pad, and can keep the performance stable at high and low temperatures. Therefore, the bearing structure provided by the application can provide higher damping characteristics for the bearing and has the characteristics of high-temperature resistance.

The invention provides a laser welding method for a metal workpiece with an aluminum coating on the surface, at least two laser beams are symmetrically arranged in the welding advancing direction in the laser welding process, the quality factor M2 of the laser beams is smaller than 1.5, each laser beam irradiates a welding assembly, and the welding assembly is welded with the aluminum coating on the surface of the metal workpiece. More than two deep melting small holes and molten metal surrounding the small holes are formed; under the irradiation of laser beam energy, the welding zone of the assembly is melted to form an overall slender molten pool, and the front edge of the molten pool tends to the vertical advancing direction to form a nearly rectangular morphology front end; the multiple deep penetration small holes drive surrounding liquid metal to flow and enable an aluminum coating on the surface of the weldment assembly to be melted, and distribution of aluminum in a molten pool tends to be uniform. According to the method, multiple laser beams are provided to act on laser welding of butt joint of the steel with the aluminum coating, so that the aluminum element is uniformly distributed in a welding seam, the influence of aluminum on a welding joint is weakened, the method is low in cost and simple to operate, and the laser welding joint with excellent performance can be obtained.

The utility model provides a sealing detection tool for a porous oil pipe, a pipe head at one end of the porous oil pipe is provided with an oil inlet, a pipe body of the porous oil pipe is provided with a plurality of small jet holes, and the sealing detection tool comprises a bottom plate. The bottom plate is provided with a floating lower module used for supporting the porous oil pipe and plugging the small spraying holes and a plugging set used for inflating the oil inlet and plugging the oil inlet during inflation, and an upper module used for pressing the porous oil pipe is fixed to the bottom plate through a support set. The floating lower module comprises a base plate and a plurality of lower pressing blocks, the lower pressing blocks are arranged on the base plate, and the bottom of the base plate is connected to the bottom plate through elastic pieces. According to the utility model, the problem of how to prevent the porous oil pipe from being crushed in the sealing detection process of the porous oil pipe in the prior art is solved.

The utility model discloses a pinhole device for oil supply during deep hole processing, which comprises a cutter bar, a guide device, a support device and a pinhole protection connecting device are arranged on the cutter bar, the guide device comprises a combined bearing inner ring, and a conical disc is fixedly connected on the outer wall of the combined bearing inner ring through a bolt. The small hole protection connecting device integrally adopts a slender shaft structure to reduce the influence of oil pressure, the guide device and the supporting device are reduced in the same proportion on the original basis and are matched with the small hole connection protection device, the original functions are played at the same time, the contact area between cutting oil and a small hole device cavity is reduced, and the machining efficiency is improved. Therefore, oil pressure formed by cutting oil in the cavity is reduced, a gap, caused by too large oil pressure, of the contact face of the cutter bar and the workpiece is avoided, it is guaranteed that the cutter bar and the workpiece are tightly attached, the workpiece is prevented from falling off through positioning and clamping of the conical disc and the workpiece, deflection of the cutter bar during machining is avoided, and a high-precision guide track is established.

The invention discloses a device and a method for detecting small hole parts in the technical field of part detection. The small hole type part detection device comprises a marble damping platform, a double-coordinate displacement platform, a to-be-detected part fixing assembly, a visual detection mechanism and a contact type measurement mechanism. The double-coordinate displacement platform can move on the marble damping platform in the X-Y direction. The to-be-detected part fixing assembly is arranged on the double-coordinate displacement platform and used for obliquely fixing a to-be-detected hole part, the visual detection mechanism is installed on the marble damping platform and used for visually detecting the to-be-detected hole part, and the contact type measuring mechanism is installed on the marble damping platform and used for measuring the to-be-detected hole part. And measuring the contour data of the in-hole chamfer of the to-be-measured hole part and the perpendicularity of the to-be-measured hole part. The roundness and the coaxiality are measured through non-contact measurement. The device can solve the problem that a contact type measuring device cannot be used for measuring the chamfer due to the fact that the hole size of a hole part is long and narrow, and meets the requirement for integrated detection of all positions of the part.

The device comprises an anchor head main plate, a bolt and an adjusting sleeve, the lower end of the adjusting sleeve is inserted into an annular mortise in the outer side of a web of the anchor head main plate, and the bolt is inserted into a pin shaft hole of the anchor head main plate and a lug plate to fix the anchor head main plate; a checking target ring is arranged on the top face of the adjusting sleeve, a laser pen is inserted into a cylindrical hole of the adjusting sleeve, and laser emitted by the laser pen is emitted from a small hole in the center of the top face. The ear plate checking and measuring device for the double-fork-ear suspender has the advantages that materials are simple, use is convenient and efficient, the ear plate can be quickly and accurately measured and checked, and the measurement precision can reach the millimeter level.

The utility model relates to a left front lower swing arm welding assembly testing fixture which comprises a testing fixture bottom plate, a left support, a middle hole position detection device and a right support are sequentially arranged at the upper end of the testing fixture bottom plate from left to right in a staggered mode, and positioning protrusions are arranged at the upper end of the left support and the upper end of the right support. A side hole detection device is arranged in front of the left support at the upper end of the detection tool bottom plate, an inclined triangular hole position plate is arranged behind the left support, three detection hole positions which are arranged in a triangular shape are arranged at the upper end of the triangular hole position plate, and a first detection pin is inserted into each detection hole position; the upper end of the detection tool bottom plate is provided with a pressing device at the outer side of the left support, the outer side of the middle hole site detection device and the outer side of the right support, and the upper end of the detection tool bottom plate is provided with a turnover detection device at the rear of the middle hole site detection device. According to the utility model, hole sites such as a large mounting hole, a small mounting hole, an upper hole, an inner hole of a butt joint sleeve, the upper hole and the like are detected, each hole site is ensured to meet requirements, and the qualified rate of products leaving a factory is greatly improved.

The invention discloses a preparation process of a fine-spacing ordered dense-arrangement porous needle plate. The preparation process comprises the following steps: designing a three-dimensional model of a needle plate mold, reserving hole site marking points, setting laser processing parameters according to the characteristics of selected materials and the precision of the required mold, filling selected metal powder, and manufacturing a needle plate mold blank through a 3D metal printing technology; according to the performance requirements of the selected materials, the needle plate mold blank is subjected to heat treatment; and a machine vision system is used for recognizing reserved hole site mark points and correcting positioning deviation, different laser machining parameters are selected according to the surface quality grade of the mold, fine machining of the inner surface of a micropore is achieved through the laser technology, and the high-quality needle plate mold is obtained. The invention further discloses a porous needle plate mold. By adopting the device and the method, the problems of difficulty in positioning, low machining efficiency, non-uniform hole distribution, overlarge hole pitch, rough hole wall and the like during micropore machining are solved, and efficient preparation of the high-precision needle plate mold with numerous micropores, small hole pitch and ordered arrangement of the micropores is successfully realized.

The present invention relates to the field of flange technology, specifically to a forging process for long-neck flanges, comprising the following steps: cutting, heating, upsetting, and stretching a rod-shaped raw material to form a raw material blank; punching a stepped hole from the long diameter section of the raw material blank, determining the depth of the large hole section of the stepped hole according to the size of the long diameter section and the flange section of the long neck flange, and determining the diameter of the small hole section of the stepped hole according to the forging ratio of the flange section of the long neck flange and the depth of the large hole section; the beneficial effect is: the forging process for the long-neck flange proposed by the present invention cuts a guide groove in the bolt hole for installing a rubber plug strip, one end of the rubber plug strip is integrally formed on the surface of the sealing gasket, and the other end is integrally formed with a rubber clamp strip. This design not only realizes the pre-limiting of the bolt to prevent the bolt from loosening, but also clamps the rubber clamp strip between the nut and the flange section when the bolt is tightened, acting as an elastic gasket, effectively improving the connection sealing and stability.