45 results about "Circular surface" patented technology

The application discloses a kind of head crescent boss processing methods of pin shaft structure bite cutting forceps, comprising the following steps: (1) the head of bite cutting bite cutting forceps is aged hardening;(2) the lower forceps tube of bite cutting forceps is clamped on five-axis engraving machine;(3) whether workpiece clamping on tool is in place is detected;(4) detection end mill, run program, carry out roughing to blank;(5) detection T-shaped milling cutter I, the wear condition of tool is detected in machine using tool detector, whether tool wear exceeds limit value is judged, if exceeding tool wear, machine tool automatically alarms, prompts operator to replace tool;(6) run program, outer circular surface is processed using T-shaped milling cutter I, (7) tool is replaced for T-shaped milling cutter II, T-shaped milling cutter II is detected again, and detection steps are as in step (5);(8) run program, inner circular surface is processed using T-shaped milling cutter II.The method can be processed crescent structure at a time, guarantee processing efficiency, precision and stability.

A lighter grinding wheel assembling and discharging mechanism comprises an axial horizontal rotating wheel, a coaxial annular groove is formed in the outer circle face of the rotating wheel, and a plurality of arc-shaped grooves distributed around the rotating wheel at equal intervals are formed in the bottom face of the annular groove. The feeding device further comprises a discharging module located on the upper edge of the rotating wheel, a circular-arc-shaped limiting section matched with the bottom face of the annular groove is formed at the bottom end of the discharging module, and a first material distributing opening, a second material distributing opening and a third material distributing opening which upwards penetrate through the discharging module are further formed in the bottom face of the circular-arc-shaped limiting section. According to the utility model, the blanking module is used for blanking and distributing the edge wheel at one end of the steel wheel of the lighter grinding wheel, and blanking and distributing the edge wheel at the other end of the steel wheel after single-side assembly is completed, so that the coaxiality after the edge wheel of the lighter grinding wheel and the steel wheel are assembled is obviously improved, and the reject ratio is lower.

The utility model discloses a SiC wafer degumming protection device, which comprises a first fixer, the first fixer comprises a first fixing plate, and the axial direction of a wafer group is along a first direction; the surface, facing the wafer group, of the first fixing plate is matched with the semi-circumferential surface of the wafer group; and in the second direction, the first fixers are divided into two groups which are oppositely arranged, and the first fixing plates in the two groups of first fixers can be far away from each other or close to each other in the second direction. When the two first fixing plates are far away from each other, a sufficient space is formed between the two first fixing plates to accommodate the wafer group. When the two first fixing plates are close to each other, the surfaces, facing the wafer group, of the two first fixing plates can be matched with the two semi-circumferential surfaces of the wafer group respectively, so that the two first fixing plates can support wafers in the wafer group in the second direction, and the wafers are prevented from rolling in the second direction; therefore, the wafer can be prevented from rolling and being damaged in the degumming and wafer washing process, and the wafer quality is further improved.

According to the thin-wall annular workpiece self-relief clamping device, a flange plate is used for being connected with a machine tool, one end of the flange plate is connected with a positioning body, a push-pull shaft is connected with a supporting disc, and the supporting disc is limited between the positioning body and the flange plate; one end of the positioning body is connected with a positioning backer, an internal expansion chuck is arranged between the positioning backer and the positioning body in a sliding fit mode, the internal expansion chuck is connected to the push-pull shaft, the positioning body is in contact with the internal expansion chuck through a conical surface, a workpiece is arranged on the outer circle face of the internal expansion chuck in a sleeving mode, and the end face of the workpiece abuts against one end of the positioning backer; the positioning device further comprises an elastic piece which is arranged between the flange plate and the supporting plate or between the supporting plate and the positioning body. Compared with the prior art, the elastic piece is additionally arranged between the flange plate and the supporting plate, the elastic piece plays a role in releasing force, the normal stress of the elastic piece on the push-pull shaft just counteracts the overlarge pulling force of the hydraulic oil cylinder on the push-pull shaft, and deformation of the thin-wall annular workpiece is avoided.

The invention discloses a short-process preparation method of an ultra-high-speed laser cladding coating on the surface of a shaft part and the obtained coating, and the method comprises the following steps: firstly, based on energy conservation and momentum balance, calculating and determining a stable process window of ultra-high-speed laser cladding; based on a geometrical optical model, the horizontal offset distance of the laser head relative to the central axis of the workpiece is calculated and controlled. Based on molten pool stress analysis under a rotating coordinate system, the relation between the rotating direction of a workpiece for restraining flowing of a molten pool and the offset direction of a laser head relative to the central axis of the workpiece is determined, under the determined conditions, ultra-high-speed laser cladding is conducted on the outer circle surface of the shaft part, and single-pass precision grinding is directly conducted after cladding. According to the method, the thin-layer coating with the smooth surface and the uniform thickness is obtained through physical stability control, the machining route of cladding-turning-grinding is simplified into cladding-single-pass precision grinding, and the machining allowance and the production cost are remarkably reduced.

The utility model relates to the technical field of crushers, in particular to a structure capable of conveniently and quickly replacing roller skins for a crusher, which comprises a rotatable main shaft, two ends of the main shaft are arranged on two bearing seats, and a crushing roller is sleeved on the main shaft between the two bearing seats; the positioning sleeve sleeves the main shaft close to the first end of the main shaft and is fixedly connected with the main shaft; the first roller disc is slidably sleeved on the positioning sleeve, and the first conical surface of the excircle surface of the first roller disc is matched with the second conical surface of the first end of the inner wall of the crushing roller; the second roller disc sleeves the main shaft close to the second end of the main shaft and is fixedly connected with the main shaft, and a third conical surface of the excircle surface of the second roller disc is matched with a fourth conical surface of the second end of the inner wall of the crushing roller; the multiple lead screws are evenly arranged in the circumferential direction of the main shaft and arranged between the first roller disc and the second roller disc, and the two ends of each lead screw penetrate through the first roller disc and the second roller disc respectively and then are provided with nuts; the utility model has the advantages that the bearings on the bearing seats at the two ends of the main shaft do not need to be detached, and the replacement process is greatly simplified.

The application relates to the field of workpiece machining equipment, in particular to a numerical control machining center capable of rapidly switching drill bits, which comprises a lathe body, a fixed frame arranged in a slide plate box of the lathe body and synchronously moving, a tool changing ring rotationally connected to the fixed frame and having a rotation axis consistent with the moving direction of the fixed frame, a tool changing motor arranged in the fixed frame and driving the tool changing ring to rotate, a plurality of drill bits uniformly arranged on the outer circular surface of the tool changing ring and capable of machining workpieces, a plurality of sleeve shafts rotationally connected to the inner circular surface of the tool changing ring and one-to-one corresponding to all the drill bits, a power motor arranged in the fixed frame and capable of driving a corresponding sleeve shaft to rotate, a plurality of vertical bevel gears rotationally connected to the tool changing ring and one-to-one corresponding to all the sleeve shafts and driven to rotate by the sleeve shafts, and a plurality of flat bevel gears rotationally connected to the tool changing ring and one-to-one engaged with all the vertical bevel gears, each flat bevel gear can drive a drill bit to rotate, so that the lathe can also be modified to adapt to rapid switching of drill bits.

The application discloses a kind of multi-dimension flow channel special-shaped body manufacturing method, including steps S1: rough machining, rectangular parallelepiped forging is processed into the special-shaped piece of internal multi-dimension flow channel;S2: after rough machining, workpiece is treated, temperature is at 320±10 ℃, keeps warm 4 hours, deep hole processing is carried out to workpiece, and the multi-dimension flow channel special-shaped body ontology is obtained;S3: vibration stress relief treatment is carried out, and multi-dimension flow channel special-shaped body ontology is assembled, including the assembly of multi-dimension flow channel special-shaped body ontology and cover plate, finger;S4: vacuum stress relief heat treatment, temperature is at 400±10 ℃, heating or cooling rate is not more than 55 ℃ / h, and the maximum local temperature difference of part is not more than 55 ℃, then keeps warm 2 hours.The multi-dimension flow channel special-shaped body of the application is assembled and welded after being assembled and welded with the first wall full-size prototype left and right 10 pairs of fingers, and two large circular surfaces are formed, the height difference between adjacent fingers on the whole circular surface is not more than 0.5mm, to meet product requirements.

The invention relates to the technical field of machining, and provides a segmented annular workpiece machining method and clamping device.The machining method comprises the steps that S1, a segmented annular workpiece is jacked in the radial direction through a jacking assembly of a first clamping device, so that finish machining of the upper end face of the segmented annular workpiece is completed; s2, the segmented annular workpiece is axially pressed from the outer side through a first pressing assembly of a second clamping device, so that finish machining of the outer circle face of the segmented annular workpiece is completed; s3, before pressing is executed, a first copper gasket is placed between a pressing plate of a second pressing assembly in a third clamping device and the outer circle face of the workpiece, and all segmented joints of the workpiece are stuffed with second copper gaskets; and then the segmented circular-ring-shaped workpiece is axially pressed from the outer side through a second pressing assembly of the third clamping device, so that finish machining of the inner circular face of the segmented circular-ring-shaped workpiece is completed. Through sequential use and targeted process design of the three sets of clamping devices, high-precision, high-efficiency and high-integrity segmented circular ring machining is achieved.

The utility model discloses a centrifugal wind wheel, a fan assembly and an air conditioner, and relates to the technical field of centrifugal fans, the centrifugal wind wheel comprises a chassis and a plurality of blades; the multiple blades are evenly distributed on the base plate around the axis of the base plate, each blade is provided with an inwards-concave face, and each inwards-concave face comprises a first arc face and a second arc face which are sequentially connected from inside to outside; wherein the distance between the inner end of the first arc surface and the axis of the base plate is L1, the distance between the outer end of the second arc surface and the axis of the base plate is L2, the distance between the intersection point of the first arc surface and the second arc surface and the axis of the base plate is L3, L1 / L2 is larger than or equal to 0.55 and smaller than or equal to 0.65, and (L3-L1) / (L2-L1) is larger than or equal to 0.6 and smaller than or equal to 0.75. The technical scheme provided by the utility model is used for reducing the flow separation condition of air flow and reducing noise.

This invention relates to the field of integrated bearing grinding technology, specifically to a multi-face integrated grinding process for the outer ring of a cross-roller bearing and its dedicated grinding device. The technical solution involves: clamping the outer ring of the cross-roller bearing once via the workpiece spindle base, and adjusting the axis of the bearing outer ring to form a 45° grinding inclination angle with the axis of the grinding end of the dedicated grinding device in the horizontal plane. The forming grinding wheel is controlled to cut into the outer ring of the cross-roller bearing radially, so that the first, second, and third grinding surfaces simultaneously contact and grind. The beneficial effect of this invention is that by using a dressed forming grinding wheel for 45° compound entry grinding, the outer circular surface, the stepped outer diameter surface, and the stepped end face of the grinding wheel simultaneously contact the workpiece, completing the machining of the outer circle, stepped outer diameter, stepped end face, and connecting fillet in one operation, completely eliminating the positioning errors caused by multiple clamping and equipment turnover in traditional processes.

This invention discloses an automatic clamping gear hobbing machine for wheel hub tubes, belonging to the field of automotive parts processing technology. By driving a synchronous adjustment component, the adjusting ring can rotate, and five radial locking blocks slide synchronously along the annular limiting groove. The radial locking blocks retract radially towards the axis along the limiting groove, and the five evenly distributed radial locking blocks move synchronously towards the center. The arc surface of the inner wall tightly fits against the outer circular surface of the workpiece top, locking it axially. This connects the wheel hub tube workpiece with the workpiece locking sleeve and the mounting plate as one unit. The mounting plate with the wheel hub tube workpiece is then placed on a support plate, and the L-shaped positioning key aligns with the keyway. Therefore, when processing wheel hub tube workpieces without keyways, there is no need to add an extra milling process for the keyway and subsequent removal process, significantly improving the workpiece production cycle and increasing production efficiency. It can also adapt to the needs of batch production of workpieces of different specifications, which is beneficial for efficient and stable processing of wheel hub tubes.

This utility model discloses a butterfly valve with a locking function, including a valve body, an extension tube, a valve stem, and a butterfly plate; it also includes a locking mechanism, which comprises an operating ring, a push rod, and a spring. The operating ring is sleeved on the outer circumference of the extension tube, and a guide hole is provided through the side of the extension tube. The push rod is slidably disposed in the guide hole. The spring applies a spring force to the push rod in a direction away from the valve stem. The inner circular surface of the operating ring is provided with a first annular groove, a second annular groove, and a conical groove. The inner diameter of the first annular groove is smaller than the inner diameter of the second annular groove. When the operating ring moves axially, the push rod has a locked position where its outer end abuts against the inner circular surface of the first annular groove and its inner end abuts against the outer circular surface of the valve stem, and an unlocked position where its outer end abuts against the inner circular surface of the second annular groove and its inner end disengages from the outer circular surface of the valve stem. This utility model can lock the valve when it is closed, preventing accidental opening of the butterfly valve due to employee misoperation or accidental contact, which could lead to safety accidents such as media leakage or explosion.

This invention provides a pump body assembly, a rotary compressor, and an air conditioner, including a crankshaft and an upper flange and a lower flange for supporting the crankshaft. The crankshaft includes a long shaft and a short shaft. The outer circular surface of the long shaft is provided with a first outer spherical surface, which includes a first upper spherical surface and a first lower spherical surface. The first outer spherical surface has a first great circle perpendicular to the crankshaft axis, and the first upper spherical surface and the first lower spherical surface are respectively located on the upper and lower sides of the first great circle. The inner hole of the upper flange includes a first inner spherical surface that matches the first outer spherical surface. The outer circular surface of the short shaft is provided with a second outer spherical surface, which includes a second upper spherical surface and a second lower spherical surface. The second outer spherical surface has a second great circle perpendicular to the crankshaft axis, and the second upper spherical surface and the second lower spherical surface are respectively located on the upper and lower sides of the second great circle. The inner hole of the lower flange includes a second inner spherical surface that matches the second outer spherical surface, thereby solving the technical problem in the prior art where stress concentration between the crankshaft and the upper and lower flanges is caused by the crankshaft deflection.

The invention provides tempered glass edge grinding equipment, and relates to the technical field of edge grinding equipment, the tempered glass edge grinding equipment comprises a driving rotating shaft, an adjusting mechanism, a buffering mechanism and a grinding mechanism, and the buffering mechanism composed of a rubber pad and a buffering spring is arranged between a supporting plate and the grinding mechanism through the equipment; vibration absorption is achieved through elastic deformation of a rubber pad and elastic reset of a buffer spring, the limiting effect of a limiting rod and a limiting groove is matched, hard collision between the grinding disc and the edge of the glass is avoided, grinding angle deviation caused by excessive shrinkage or inclination of a buffer structure is prevented, and the service life of the grinding disc is prolonged. The grinding mechanism forms an arc surface through meshing of a stud and a threaded groove, circumferential clamping of a clamping block and a clamping groove, magnetic attraction limiting of a magnetic limiting block and a limiting hole and clamping of a rough grinding surface, a medium rough grinding surface and a fine grinding surface, so that multi-stage progressive grinding is realized, and the problem of glass breakage caused by single grinding is fundamentally avoided; and the tempered glass edging yield and the surface machining precision are remarkably improved.

The application discloses a kind of handheld laser welding repair defect process protection methods, comprising the following steps: S1: measurement;Part is placed on platform, and the structure state around defect position is clear, defect is in plane, circular surface (inner / outer), corner, corner and so on Position, and the size of defect position is measured, and according to the size of different defect position, it is divided into point defect and surface defect;S2: prepare adaptive repair protection sample plate;According to the size obtained by measuring different defects, prepare repair protection sample plate;S3: assembly;Repair protection sample plate is fixed in defect to be repaired position using fixing piece etc.;S4: defect repair;The way of welding while feeding wire is used to repair defect, to ensure that repair height is higher than surrounding matrix;S5: machining;Remove excess filler metal, and the filling position meets the size requirement of drawing;S6: appearance inspection;Further improve repair quality and repair efficiency.

The biscuit demolding device of the rotating target material comprises a base, two parallel rails are arranged on the upper surface of the base, and a support body perpendicular to the base is arranged on the outer side of each rail; the bearing platform comprises a lifting table on the outer layer and a sliding table on the inner layer, the two opposite sides of the sliding table are supported on the supporting face on the inner side of the lifting table in a sliding mode, and the table top of the sliding table is flush with the table top of the lifting table; rollers rolling along the rails are arranged on the lower surface of the sliding table; one side of the lifting table is opened for the sliding table to slide out of the lifting table along the supporting face, and the sliding direction of the sliding table is the same as the rail direction. The lifting mechanism is arranged on the base and connected with the lifting table; the fixing assembly comprises a transverse support and a fixing ring, the fixing ring comprises two semi-circular rings, the outer circular face of each semi-circular ring is fixedly connected with one end of the transverse support, the other end of the transverse support is fixedly connected with the support body on the same side, and the ends of the two semi-circular rings are connected through an adjusting bolt. According to the utility model, stable and safe biscuit demoulding can be ensured, and the damage probability of the biscuit is reduced.

The application belongs to the technical field of clamps, and particularly relates to an auxiliary clamp for finish machining of the outer circular surface of a ring-shaped part, which comprises a base body and a clamp body fixed at the front end of the base body, the clamp body comprises a large-diameter section and a small-diameter section, a step is formed at the joint of the large-diameter section and the small-diameter section, and a positioning sleeve is sleeved on the small-diameter section; a strutting part is connected to the front end of the small-diameter section, an expansion sleeve is sleeved on the strutting part, the surfaces in contact with each other between the expansion sleeve and the strutting part are all conical surfaces, the expansion sleeve is matched with a mandrel; an adjusting groove is arranged on the outer wall of the small-diameter section, the adjusting groove has a hemispherical structure or a conical structure which gradually narrows from the opening to the bottom, the positioning sleeve is provided with a first adjusting hole, the center line of the adjusting groove is closer to the step than the center line of the first adjusting hole, and the first adjusting hole is threadedly matched with a first adjusting bolt. The application has the advantages that the flatness of the tooling is adjusted to ensure the machining precision of the outer circular surface of the ring-shaped part.

The present application relates to conveying equipment technical field, specifically to a kind of desk and chair production material conveying system, including rack, multiple conveying rollers, driving mechanism, adjusting mechanism, two lateral limiting mechanisms, end baffle and clamping conveying mechanism;The outer circumferential surface of each conveying roller is provided with a ring groove along the circumference, and the cross section of the ring groove is V-shaped;Self-centering cooperation is formed by the V-shaped cross section of the ring groove and the circular surface of the cross beam, so that the cross beam automatically slides into the bottom of the ring groove under the action of gravity to complete the posture regulation, then the two sides of the cross beam are contacted and limited by the two lateral limiting mechanisms with adjustable spacing, to prevent deviation during conveying, while the driving mechanism drives multiple conveying rollers to rotate synchronously, and the cross beam is stably conveyed to the end of the rack, finally intercepted by the end baffle, to realize the cross beam to be accurately parked at the predetermined position with uniform posture, so that the posture of the cross beam can be regulated and accurately conveyed.

The utility model discloses a bending machine die suitable for multi-radian circular face machining, and belongs to the technical field of bending machines. A bending machine die suitable for multi-radian round face machining comprises an upper support and a lower support, a multi-radian round face upper die is installed in the upper support, a multi-radian round face lower die is connected into the lower support in a sliding mode, and servo motors and bevel gears are installed at the upper end of the upper support and the lower end of the multi-radian round face lower die. The bending machine die solves the problem that an existing bending machine die is inaccurate in radian positioning due to the fact that a boss and a groove are used for machining, the four multi-radian circular face upper dies and the corresponding multi-radian circular face lower dies are adopted, and a bevel gear is driven by a servo motor to adjust a driving gear. The position of the bending head, corresponding to the forming groove, of the upper multi-radian circular face die is adjusted, the structure is simple, operation is convenient, and high-precision bending work is achieved through the precise lower multi-radian circular face die and the corresponding upper multi-radian circular face die.

The application discloses a welded volute, which comprises a first side plate, a second side plate, an inner circular surface, an outer circular surface and a guide vane; one end of the outer circular surface is connected with the first side plate, and the other end is connected with the second side plate; the first side plate and the second side plate are both provided with a circular opening; the inner circular surface is in the shape of a circular truncated cone, and one end is connected with the circular opening of the second side plate; a plurality of guide vanes are uniformly arranged on the periphery of the inner circular surface in a circumferential direction; the guide vanes are in the shape of a circular arc, one end of the outer wall of the guide vanes is fixedly connected with the second side plate, and the other end of the outer wall is fixedly connected with the inner circular surface; the outer circular surface, the inner circular surface, the first side plate and the second side plate form an annular inner cavity and an air inlet, and the air inlet is communicated with the annular inner cavity. The volute can be quickly and efficiently processed by using simple plate materials and tubular materials, and in the processing process, a plurality of steel plates are not needed to be welded to form an arc surface, the welds in the flow channel are few, the inner surface of the flow channel is smoother, the processing efficiency is high, and the cost is low.

The lighter grinding wheel assembling mechanism comprises an axial horizontal rotating wheel, an annular groove is formed in the outer circle face of the rotating wheel, and a plurality of arc-shaped grooves distributed around the rotating wheel at equal intervals are formed in the bottom face of the annular groove. Stamping openings in one-to-one correspondence with the arc-shaped grooves are formed in the side walls of the two sides of the annular groove, columnar punches are connected into the stamping openings in a penetrating mode, and T-shaped heads in sliding fit with the stamping openings are arranged at the ends, away from the arc-shaped grooves, of the columnar punches. Each arc-shaped groove is provided with a first guide groove, a second guide groove and a third guide groove which are sequentially arranged side by side in the width direction of the annular groove. And the blanking module is positioned on the upper edge of the rotating wheel. According to the utility model, a jig for assembling the lighter grinding wheel does not need to be put repeatedly, a matched jig recovery mechanism is not needed, the coaxiality after the edge wheel and the steel wheel of the lighter grinding wheel are assembled is obviously improved, and the reject ratio is lower.

The invention relates to a wheel assembly (550 ', 550' ') for a container handling vehicle (501), the wheel assembly (550', 550 '') comprising:-a wheel (510 ', 510' ') and a gear mechanism (511', 511 ''),-the wheel (510 ', 510' ') being rotatable about a wheel axis (WA) and comprising a toothed circular surface arranged radially inward of a rim of the wheel (510', 510 ''),-the gear mechanism (511 ', 511' ') being rotatable about a gear mechanism axis (GA), the wheel axis (WA) and the gear mechanism axis (GA) are arranged parallel and offset with respect to each other and engage with a toothed circular surface (512) of the wheel (510 ', 510' ') via a toothed outer surface (519', 519 ''), and wherein the wheel axis (WA) and the gear mechanism axis (GA) are arranged parallel and offset with respect to each other.

The invention relates to the technical field of coupler detection, in particular to a measuring method for real-time calculation and wireless transmission of radial / axial deviation of a coupler. The radial displacement of a plurality of measuring belts on the outer circle face of a driven end shaft sleeve and the axial displacement of the end face of the driven end are synchronously collected during the rotation period of the coupler, the radial installation deviation is determined by fitting an ellipse, and the axial installation deviation is determined by fitting a space plane; meanwhile, the laser focus is dynamically adjusted according to the real-time distance between the measuring point and the measuring head, and real-time radial displacement and axial displacement are compensated according to the radial installation deviation and the axial installation deviation; therefore, the defect that the rotation track cannot be reflected by depending on static single-time point taking is overcome.

The invention relates to the technical field of detection tools, and discloses a rotating shaft radial run-out detection tool which comprises a bottom plate, first sliding rails are fixedly connected to the two sides of the top of the bottom plate, moving tables are slidably connected to the two sides of the tops of the first sliding rails, and rapid positioning mechanisms are arranged at the tops of the moving tables. The quick positioning mechanism comprises a connecting base, the bottom of the connecting base is fixedly connected with the moving table, and a first V-shaped groove is formed in the top of the connecting base. The movable table slides along the first sliding rail to flexibly adapt to rotating shafts with different lengths, the automatic centering characteristic of the V-shaped groove and the guiding function of the sliding rod are matched, the limiting base is driven to ascend and descend through transmission of the lead screw, multi-point stable clamping of the rotating shafts with different diameters can be achieved, workpiece shifting or positioning deviation in the detection process is avoided, and the detection accuracy is improved. Sliding friction is converted into rolling friction through the pulley structure, the outer circle face of the rotating shaft is prevented from being scratched and abraded, and the rotating stability of the workpiece is guaranteed.

The invention discloses a welding-free supporting disc and a sand control screen thereof, the supporting disc is sleeved and fixed on the outer circular surface of a base pipe (1), a sleeving hole of the supporting disc (2) is a taper hole (a), a conical gap (c) is formed between the taper hole (a) and the outer circular surface of the base pipe (1), and the conical gap (c) is a conical gap (c). A conical gap (c) is formed in the base pipe (1), a taper locking sleeve (3) consistent with the taper angle of the taper hole (a) is inserted into the conical gap (c), the supporting disc (2) is expanded on the base pipe (1) through the taper locking sleeve (3), the supporting disc is expanded on the base pipe with a sand control filter section through the taper locking sleeve structure, and the sand control screen pipe is formed. And the use reliability of the base tube is greatly improved.

The utility model provides a bearing sealing ring with an air hole, which comprises a sealing ring main body and a framework, an outer lip of the sealing ring main body is arranged behind an outer sealing groove, and a channel is reserved between the inner side of the outer circular surface of the outer lip and the outer side of the inner side end surface of the outer lip and the outer sealing groove; the inner side end face of the outer lip is at least provided with one radial groove which is arranged in the radial direction and communicates with the inner space of the bearing and the channel, the outer circle face of the outer lip is at least provided with one axial groove which is arranged in the axial direction and communicates with the outer space of the bearing and the channel, and the radial groove and the axial groove are arranged in a staggered mode and communicate through the channel. The radial grooves and the axial grooves which are mutually staggered and are communicated through the channels are formed in the outer lip, and air inside and outside the bearing is communicated in a staggered manner through the radial grooves, the axial grooves and the channels, so that the air pressure inside and outside the bearing can be kept relatively balanced when the temperature inside the bearing is changed; and the phenomenon that the bearing is clamped or the torque becomes heavy when air in the bearing shrinks is avoided.

The utility model belongs to the technical field of mechanical part connection, and provides a floating ring with a constant inner diameter and a constant outer diameter, which comprises an annular base body sleeved outside a first part with a constant inner diameter and embedded in a second part with a constant outer diameter; the arc-shaped notches are formed between the inner circular surface and the outer circular surface of the annular base body; the arc-shaped notches can deform under the action of radial force so as to store stress, and after the radial force disappears, the stress is released through radial floating at any angle of the circumference so that the first component and the second component can be quickly centered, and self-centering adjustment between the first component and the second component can be achieved. The radial floating at any angle of the circumference of the first component or the second component is realized through deformation of the arc-shaped notches arranged between the inner circular surface and the outer circular surface of the annular base body, the structure is greatly simplified, the maintenance, the disassembly and the assembly are convenient, the arc-shaped notches are in a built-in form, the device can be used for different mechanical parts, the universal adaptability is strong, and the cost is low. And the accessory cost can be effectively controlled.

The invention relates to a cutting unit (10) configured to form notch (22) on a disc (20) by cutting the circular surfaces of soil cultivation discs, comprising at least one table on which the disc (20) to be subjected to the cutting process is positioned, comprising at least one cutting arm (70) and at least one lower die (100) between which the portion of the disc (20) to be cut is placed, at least one first drive element (50) that enables the cutting arm (70) to be moved towards the lower die (100) for the cutting process, that is connected to the cutting arm (70) by a rotary bearing (60), and that transmits drive to rotate the cutting arm (70) around the rotary bearing (60) for the cutting process. Accordingly, its novelty is that it comprises at least one rotation mechanism (40) for rotating the table (30) around the center (21) of the disc (20), it comprises at least one second drive element (110) for moving the table (30) along a first axis (I) toward or away from the cutting zone (90) between the lower die (100) and the cutting arm (70).

The invention relates to the technical field of motor shell machining, and discloses a motor shell producing and machining device and method.The motor shell producing and machining device comprises a rack; the drilling mechanism comprises an X-axis rotating assembly, a Z-axis rotating assembly, a first shell end limiting assembly, a deflection direction adjusting assembly, a deflection angle adjusting assembly and a second shell end limiting assembly; the multi-axis posture adjusting mechanism is additionally arranged on the mobile platform, so that the motor shell can be accurately controlled to rotate and deflect in any direction in a three-dimensional space on the premise of one-time positioning of a parameter reference, and therefore, corresponding drilling and tapping areas of the two ends and the outer circular surface of the motor shell are respectively processed by matching with a drill bit; the same initial coordinate system parameters are adopted in the whole adjusting process, and machining errors caused by repeated clamping and positioning can be effectively reduced.