154 results about "Groove width" patented technology

The application provides a numerical control machining method for an end face ring groove, and relates to the field of numerical control machining.The numerical control machining method for the end face ring groove comprises the following steps: obtaining the cross-sectional shape of the end face ring groove; determining the real-time groove width of the tool shaft when feeding according to the cross-sectional shape and the real-time groove depth of the tool shaft when feeding; determining the center track radius of the tool shaft according to the real-time groove width and the width of the blade; determining a track circle which is concentric with the center of the center circle and has a radius equal to the center track radius according to the center of the center circle of the end face ring groove; coinciding the symmetric center of the inner and outer edges of the blade with the center of the center circle, coinciding the shaft center of the tool shaft with the center of the center circle, and controlling the rotation of the tool shaft to cut out the ring groove.The technical scheme of the application greatly improves the utilization rate of the tool, reduces the production cost, and covers a wide range of machining of the end face ring groove.

To improve traction performance while securing heat build-up resistance.SOLUTION: Groove widths of narrow grooves 21, 22 and 41 with respect to groove depths thereof are 10[%] or more and 25[%] or less. Center blocks 31A have protruding parts 31Ab formed so that either of the parts adjacent to each other in a tire width direction protrudes toward the other. The protruding parts are arranged so that the parts fit to a space between protruding parts of the other center blocks formed adjacently in a tire circumferential direction. Width-directional narrow grooves and shoulder lug groove 43 are arranged so that respective end parts 41a and 43a thereof oppose to each other. An angle θa1 of the shoulder lug groove with respect to the tire circumferential direction is 80[Deg] or more and less than 100 [Deg]. The width-directional narrow grooves are larger in inclination with respect to the tire width direction than the shoulder lug grooves. The number of shoulder blocks 32A arranged in the tire circumferential direction is 28 or more and 43 or less. In a tread part, a center tread gauge on a tire equatorial plane CL is 40[mm] or more, and a ratio of the center tread gauge with respect to groove depths of the shoulder lug grooves is 105[%] or more and 185[%] or less.SELECTED DRAWING: Figure 1

The utility model discloses groove-shaped plate processing equipment, and relates to the field of groove-shaped plate processing. Through the arrangement of the sliding groove, the sliding plate, the L-shaped plate and the pressing plate, under the action of the sliding groove, the L-shaped plate and the pressing plate can rotate, then the L-shaped plate and the pressing plate can flexibly and freely rotate, the rotating mechanism brings great convenience to plate machining, plates of various shapes and specifications can tightly lean against the L-shaped plate, and the machining efficiency is improved. Under the action of the rotating plate and the scales, the sliding plate rotates, the radian of the groove is accurately controlled, measurement errors are reduced, clear scale marks enable data reading to be simple and visual, working efficiency is improved, the device is used for positioning parts or tools, machining accuracy and precision are guaranteed, and the device is suitable for popularization and application. The grooving width is kept uniform, the construction quality is improved, the measurement and adjustment time is shortened, meanwhile, the structural stability is enhanced, and the convenience and safety of the plate in the grooving process are improved.

The application discloses a joint structure of high-energy beam welding and a processing and welding method thereof, and aims at solving the problems of stress concentration, gas residue, heat affected zone and difficult control of welding quality in the prior art. The joint structure comprises coaxially assembled base material I and base material II; a first annular groove is arranged on a welding surface of the base material I, a second annular groove is arranged on a welding surface of the base material II, the groove widths of the first annular groove and the second annular groove are consistent and the positions of the first annular groove and the second annular groove correspond; the first annular groove and the second annular groove form an annular stress relief channel after the base material I and the base material II are assembled; at least one exhaust channel is arranged on the base material I and / or the base material II, one end of the exhaust channel is communicated with the annular stress relief channel, and the other end is used for communicating with an external environment; and the maximum radial dimension of the communicated position of the exhaust channel and the annular stress relief channel is smaller than the groove width of the annular stress relief channel. The structure can eliminate stress concentration during welding, and prevent the initiation and expansion of cracks after welding.

The utility model discloses an active and passive annular locking plate self-ligating bracket, which comprises a bracket matrix provided with an arch wire groove, and further comprises an annular locking plate provided with an arc section and a concave section which are connected in sequence to form an annular structure with an opening, and an annular locking plate provided with an arc section and a concave section which are connected in sequence to form an annular structure with an opening, an annular groove is further formed in the portion, on the periphery of the arch wire groove, of the parent body, the annular groove is provided with a first annular groove opening, a second annular groove opening and an annular groove first transition section, and the groove width of the annular groove first transition section is larger than that of other portions of the annular groove. And the annular locking plate can rotate in the annular groove. The bracket disclosed by the utility model has the advantages that the bracket is simple in structure and convenient to lock, and active self-locking and passive self-locking can be realized at the same time.

A cathode plate insulation edge clamping strip for electrolysis comprises a clamping groove for clamping a cathode plate and a circular groove for containing an expansion rod, the directions of groove openings of the clamping groove and the circular groove are opposite, the clamping groove is a straight groove, the range of a groove cavity of the circular groove is larger than a semicircle, the clamping groove and the circular groove share a groove bottom, and symmetric planes in the groove width direction of the clamping groove and the circular groove are coplanar; the whole groove wall of the groove bottom section of the clamping groove is an equal-thickness groove wall, the groove wall of the groove middle section of the clamping groove is gradually and slowly thinned from the groove cavity to the groove wall of the groove opening, and the groove wall of the groove opening section of the clamping groove is sharply thinned from the groove cavity to the groove opening; the whole groove wall of the circular groove is equal in thickness; the joint of the outer wall face of the groove wall of the circular groove and the outer wall face of the groove bottom section groove wall and the outer wall face of the groove middle section groove wall of the clamping groove smoothly extends in an inwards-concave mode. According to the technical scheme, the stability and reliability of tightly clamping the negative plate by the edge clamping strip are improved, the smoothness of the edges of the two sides of a finished product plate obtained through electrolysis is improved, and electrolysis flaws are reduced.

The utility model discloses an automatic chamfering tool for bars, which is characterized by comprising a chain wheel, a baffle plate, a chamfering grinding wheel and an automatic feeding device, the chain wheel is provided with a plurality of grooves for placing the bars, the baffle plate is arranged on the outer side of the revolution surface of the chain wheel, the chain wheel and the chamfering grinding wheel are coaxially arranged, and the automatic feeding device is arranged on one side of the baffle plate. By means of the ingeniously-designed combination of the crankset and the baffle, stable rotation and uniform rolling of bars in the machining process are achieved, and therefore the uniformity of the roundness and the width of chamfers is guaranteed. The thickness and the groove width of the crankset can be flexibly adjusted according to the size of the bar, and the machining precision and applicability are further improved.

A firestarter includes an integral block of wood of six sides. A slat and groove portion extends from an outermost bottom surface of a bottom side towards a top wall of the top side. The slat and groove portion includes a plurality of slats and a plurality of grooves. Each slat of the plurality of slats has a slat width and each groove of the plurality of grooves has a groove width. The slat width and the groove width are the same. The plurality of grooves extend through the front side, the back side and the bottom side and the plurality of grooves do not extend through the first side, the second side, and the top side.

The invention discloses an equal-groove-width variable-pitch engineering tire pattern structure giving consideration to low noise and full abrasion period equal saturation, and relates to the technical field of tires. The technical bottlenecks of single performance, inconsistent performance of each pitch, uneven abrasion, poor structural reliability and low universality in the variable pitch design of the traditional engineering tire are broken through, and through the integrated innovative design of the equal-groove-width foundation design, the density differentiation matrix solid salient points and the third-order universal pitch proportion, the variable pitch design of the engineering tire is achieved. The low noise, the performance consistency, the uniform abrasion and the structural reliability are synergistically considered, and the use requirements of heavy load and multiple working conditions of the engineering tire are comprehensively met.

The present disclosure relates to a tire in which: a meandering groove extending in a tire circumferential direction is formed on a tread surface; a groove width of the meandering groove in a tire width direction varies along the tire circumferential direction at a predetermined repeating cycle; a ratio Wmin / Wmax of a maximum width and a minimum width of the groove width is 0.35 to 0.85; a first groove wall and a second groove wall, which are two groove walls of the meandering groove, each extend in a sinusoidal meandering manner in a tread surface view with the predetermined repeating cycle as a cycle length; and a first sinusoidal curve formed by the first groove wall and a second sinusoidal curve formed by the second groove wall are arranged with a phase difference of 1 / 8 to 3 / 8 of a cycle in the tire circumferential direction in the tread surface view.

The utility model discloses a simple piston ring with oil storage grooves, which comprises a ring-shaped main body structure and is characterized in that a plurality of oil storage grooves are processed and formed on an excircle working surface of the ring-shaped main body structure by adopting a milling or grinding process, the plurality of oil storage grooves are annular and are uniformly distributed along the axial direction, the groove width of each oil storage groove is 0.5 mm, and the groove width of each oil storage groove is 0.5 mm. The depth of the oil storage grooves is 0.2 mm, and the sum of the widths of the oil storage grooves accounts for 1 / 3-1 / 2 of the height of the annular body structure. The lubricating device is simple in structure and good in lubricating effect.

A tyre (1) comprises a tread band (2) in a radially outer position, on which a tread surface (3) is defined. The aforementioned tread band (2) comprises a plurality of grooves (7A, 7B), each groove comprising a first wall (71) and a second wall (72) facing each other and defining a groove width (WG). At least one of the first wall (71) and the second wall (72) comprises a plurality of protrusions (8) protruding from at least one of the first wall (71) and the second wall (72), having a protrusion width (WP), where the protrusion width (WP) is less than 20% of the groove width (WG).

This invention discloses an online tool health monitoring method and system based on workpiece machining quality data fusion. First, the deviation between the actual groove width and the standard groove width of the workpiece is calculated, constructing a time-series sequence of groove width deviation. Then, a sliding time window mechanism is used to dynamically extract multi-dimensional time-series features, including mean, standard deviation, slope, out-of-tolerance count, and previous values, comprehensively characterizing the nonlinear evolution trend during tool wear. Further, the fused feature vector can be input into a random forest regression model to achieve high-precision prediction of the current groove width. Finally, based on the deviation between the predicted groove width and the standard groove width, the tool degradation state is evaluated in real time. This invention directly utilizes groove width data from the machining process, eliminating the need for additional sensor deployment. It offers advantages such as low cost, high reliability, and strong real-time performance, reducing scrap rate and improving tool life without increasing hardware investment.

The utility model provides a pipeline supporting device, and relates to the technical field of pipeline erection. In the device, a positioning part for positioning a pipeline is arranged at the upper end of a supporting seat, and the lower end of the supporting seat is supported on a plurality of base plate units which are distributed at intervals; at least one of the base plate units comprises a plurality of base plates stacked in the vertical direction, at least one of the base plate units is a set base plate unit, the base plates of the set base plate unit comprise a first base plate and a second base plate, and the adjacent end faces of the first base plate and the second base plate in the vertical direction are matched slopes. The first base plate and the second base plate are respectively provided with a groove and a boss at the inclined surface; the groove and the boss extend in the first horizontal direction, and the first horizontal direction is perpendicular to the inclination direction of the inclined face. The boss and the adjusting unit are contained in the groove, the adjusting unit comprises a plurality of adjusting blocks, the boss is provided with the adjusting blocks on the set side in the groove width direction of the groove, and the set side is the side, close to the lower end of the slope, of the boss in the groove width direction.

Task To provide a tire that can provide resistance to uneven wear and performance on snow in a compatible manner. Solution: A plurality of circumferential grooves (20) arranged in a tread surface (15A) includes a pair of outermost circumferential grooves (21) arranged on respective outermost sides in the tire width direction, and a narrow circumferential groove (22) having a groove width of 30% or less of a groove width of the outermost circumferential grooves (21). A central portion (31) has a width (CW) of 45% or more of a development width (TW) in the tire width direction. A lug groove (40) includes a closed lug groove (40a) that closes on one side of the groove bottom (40ab) from a position of at least half a groove depth (Dc) during ground contact, and an open lug groove (40b) that does not close during ground contact.A block (30) includes central blocks (31Ba) defined by the circumferential grooves (20) arranged on an inner side in the tire width direction of each of the outermost circumferential grooves (21). In a central block row (31B) in which the central blocks (31Ba) are arranged in the tire circumferential direction, the closed lug groove (40a) and the open lug groove (40b) are arranged alternately in the tire circumferential direction.

A tire (2) according to the present application can reduce the rolling resistance without reducing the WET performance. The tire (2) includes a tread (4) and a belt layer (14). The belt layer (14) includes an inner layer (38) and an outer layer (40). An end portion of the outer layer (40) is located axially inward of an end portion of the inner layer (38). A circumferential fine groove (48) extending continuously in the circumferential direction is formed in a shoulder land portion (46s). A groove width of the circumferential fine groove (48) is narrower than a groove width of a shoulder circumferential groove (44s). The circumferential fine groove (48) is located axially between the shoulder circumferential groove (44s) and the end portion of the outer layer (40). A ratio of an axial distance from the shoulder circumferential groove (44s) to the circumferential fine groove (48) to an axial distance from the shoulder circumferential groove (44s) to the end portion of the outer layer (40) is 15% or more and 55% or less.

The utility model provides a quartz boat and wafer processing equipment, and relates to the technical field of semiconductors. A first groove rod, a second groove rod, a third groove rod and a fourth groove rod of the quartz boat are arranged in parallel, the first groove rod and the second groove rod are located above the third groove rod and the fourth groove rod, and the projection of the third groove rod and the projection of the fourth groove rod on the horizontal plane are located between the projection of the first groove rod and the projection of the second groove rod on the horizontal plane. Two ends of the first groove rod, the second groove rod, the third groove rod and the fourth groove rod are respectively connected with the first side plate and the second side plate; wherein the inner side surfaces of the first groove rod and the second groove rod are provided with V-shaped grooves, the inner side surfaces of the third groove rod and the fourth groove rod are provided with flat-bottom grooves, and the groove widths of the V-shaped grooves and the flat-bottom grooves are greater than the width of a wafer; when the wafer is placed in the quartz boat, the wafer abuts against the bottom of the flat bottom groove and the side wall of the V-shaped groove. The method has the advantage of improving the integrity of a wafer product.

Profile system (1) comprising at least one elongated rail profile (2) extending in a longitudinal direction (L) and having a constant cross-section, and at least one retaining element (3) designed to be detachably attached to the rail profile (2), wherein the rail profile (2) in cross-section has a substantially rectangular base section (6) provided on its front face with a receiving groove (7) extending in the longitudinal direction (L) which describes a circular arc (8) extending over at least 200° with a first radius R1 and is accessible via a groove opening (9) of a predetermined groove width (B), and at least one first fastening leg (13) which is substantially flush with the rear face of the base section (6) and projects outwards from the base section (6), and wherein the retaining element (3) comprises a retaining section (15) and a retaining element (15) attached thereto.a connecting section (16) elongated and extending in the longitudinal direction (L), wherein the connecting section (16) comprises at least a web (17) extending outwards from the retaining section (15) and a cylindrically shaped joint head (18) arranged at the free end of the web (17), the lateral surface of which, viewed in cross-section, describes a circular arc with radius R2 equal to or slightly smaller than radius R1, wherein the maximum distance (a, max) between a circular chord (19) bounding the circular arc and the lateral surface is slightly smaller than the groove width (B), so that the rod end (18) can be inserted through the groove opening (9) into the receiving groove (7) in a certain pivot position of the retaining element (3) with respect to a pivot axis (20) extending in the longitudinal direction (L) and can be locked within the receiving groove (7) during a pivoting movement about the pivot axis (20), characterized in that the web (17) of the connecting section (16) projects from the retaining section (15) at an angle (β) in the range between 100° and 110°.

The present disclosure provides a body comprising an insert pocket into which a cutting insert is mounted, the insert pocket including: a lower jaw part having a screw hole; an upper jaw part that is arranged apart from the lower jaw part; and a housing groove part into which the cutting insert is inserted, the housing groove part being formed between the lower jaw part and the upper jaw part, wherein the housing groove part is formed such that a groove width on a leading end side is narrower than a groove width on a rear end side

To provide a tire capable of further improving snow performance.SOLUTION: In a tire including a plurality of lug grooves 10 extending in a tire radial direction from a tread portion 1 toward a sidewall portion 2, a plurality of shoulder blocks 21 defined in a shoulder region by the lug grooves 10, and a plurality of side blocks 22 defined in a side region by the lug grooves 10, the plurality of lug grooves 10 include a first lug groove 11 and a second lug groove 12 alternately arranged along a tire circumferential direction, and the first lug groove 11 includes a first widened portion side 11A having a locally widened groove. The second lug grooves 12 each have a second widened portion side 12A where the groove is locally widened, and the positions of the first widened portion side 11A and the second widened portion side 12A in the tire radial direction are different from each other.SELECTED DRAWING: Figure 2

The utility model discloses a rotor punching sheet and a rotor core using the same. The rotor punching sheet comprises a disc-shaped punching sheet body, a shaft hole arranged on the punching sheet body, and an even number of magnetic steel groove groups uniformly distributed along the circumferential direction of the shaft hole at intervals. Each magnetic steel groove group at least comprises a pair of first magnetic steel grooves which are symmetrically distributed in a splayed shape; each first magnetic steel groove comprises an accommodating groove for accommodating magnetic steel and a circulating groove for circulating cooling liquid, which are connected in a penetrating manner; wherein the circulating groove is located at the tip of the splayed shape of each magnetic steel groove group; the groove width of the circulating groove is at least twice that of the accommodating groove; and the groove length of the circulating groove is 1 / 3-1 / 2 of the groove length of the accommodating groove.

The shoes are designed to absorb impact from the ground to the feet while maintaining ankle alignment and providing good control when the wearer is running on uneven terrain. [Solution] The shoe according to this embodiment includes a first groove extending forward from the inner foot side to the outer foot side on the bottom surface of the sole, and a second groove extending forward from the bottom surface side to the top surface side on the inner foot side of the sole, wherein the groove width at the inner foot side end of the first groove and the groove width at the bottom surface side end of the second groove overlap at least a portion along the boundary direction between the bottom surface and the inner foot side.

A purpose of the present invention is to improve heat resistance. A center longitudinal groove 21 can be closed when a tire is in contact with the ground, has an average groove width of 50% or less of an average groove width of shoulder longitudinal grooves 22, and has an average groove depth of 80-100% of an average groove depth of the shoulder longitudinal grooves 22. A center lateral groove 41 has an average groove depth that is 90-100% of an average groove depth of shoulder lateral grooves 51. A dimple 61 has a polygonal opening, a depth that is 25% or more of the groove depth of the shoulder lateral grooves 51, a cross-sectional shape along a tire radial direction that becomes smaller from the opening toward a groove bottom, and an opening area relative to a block tread area that is more than 6% and less than 20%.

The utility model discloses a kind of layered weight-reducing groove type bulkheads, which is made by two layered structure plates opposite spliced, the layered structure plate thickness is half of general groove type bulkhead, the layered structure plate is divided into short distance groove and long rectangle groove, two kinds of grooves are oppositely arranged with interval, when two layered structure plates are spliced, the short distance groove outer ridge of one layered structure plate is spliced with the long rectangle groove inner groove of another layered structure plate, compared with general groove type bulkhead, the thickness of the layered spliced groove plate is the same on the same section, and the plate material of two layered structure plates is the same, but the groove wall of the layered spliced groove plate groove is the same as the general groove type bulkhead with the same length and the same number of groove width of short distance groove, but the groove wall of the layered structure plate is thinner, so the material is less.

Task Providing low rolling resistance performance and snow traction performance in a compatible manner. Solution: One or more narrow circumferential grooves (22) on an inner side in the tire width direction of the main circumferential groove (21) enclose groove walls which, upon ground contact on one side, come into contact with each other closer to a groove bottom than at least a center of a groove depth. The first continuous central lug grooves (41) include groove walls that do not come into contact with each other during ground contact and have ends (41a and 45a) that communicate with the main circumferential grooves (21) and are arranged opposite to the shoulder lug grooves (45) in the tire width direction. The second continuous central lug grooves (42) include groove walls that come into contact with each other during ground contact on one side closer to a groove bottom than at least a center of a groove depth and have ends (42a and 45a) that communicate with the main circumferential grooves (21) and are arranged offset from the shoulder lug grooves (45) in the tire circumferential direction.A groove width (W4) and a groove depth (D4) of the first continuous center lug grooves (41), a groove width (W5a) of an opening portion and a groove depth (D5) of the second continuous center lug grooves (42), and a groove width (W9) and a groove depth (D9) of the shoulder lug grooves (45) satisfy the relationships W4 < W5a < W9 and D4 < D9 < D5 when in contact with the ground.

In a pneumatic tire including a groove in an outer surface of a tread, the groove has a bottom forming a maximum depth, side walls extending from a contact surface of the tread to a side of the bottom, and a projection portion projecting into the groove from at least one side wall. A regular state in which the tire is mounted on a rim and inflated to a regular internal pressure is defined, a ground contact state in which the tire in the regular state contacts a flat surface and is loaded with 100% of a regular load is defined, and when the groove is directly below ground contact in the ground contact state, a groove width (W1a) of the groove at a projection portion position and a groove width (W2a) of the groove at an opening portion position of the groove satisfy W1a / W2a≤0.75.

To provide a trolley wire capable of being wound around a drum at a desired inclination angle.SOLUTION: A contact wire 1 suspended on a track by a suspension member 2 has a nominal cross-sectional area of 130mm2 or more and 170mm2 or less, and a pair of suspension grooves 1112 with which the suspension member 2 is engaged and a pair of wear limit grooves 1314 indicating a wear limit position are formed so as to be recessed from the 1a of an outer peripheral surface along a longitudinal direction. The pair of abrasion limit grooves 1314, have groove widths W larger than 0. 5mm and 1. 5mm or less and groove depths D larger than 0. 3mm and 0. 6mm or less, and the center line of the contact wire is inclined in a range of 5 ° or more and 25 ° or less with respect to the axial direction of the body part of the drum to be laterally wound around the drum.SELECTED DRAWING: Figure 2

The invention belongs to the technical field of measuring jigs, and discloses a groove width measuring jig. The groove width measuring jig comprises a base, a positioning piece, a guiding piece, a moving piece, a resetting piece and a measuring piece. According to the groove width measuring jig, the workpiece to be measured is placed on the jig to be detected, the workpiece does not need to be carried to a quality inspection center from a production station, secondary clamping of a special clamp is not needed, the risk that the workpiece is collided and damaged in the carrying process can be directly avoided, meanwhile, the operation time and precision loss of the clamping link are omitted, and the production efficiency is improved. And the real-time detection requirement in a high-efficiency production scene is met. Besides, as the positioning piece and the moving piece directly abut against the two side walls of the groove to be measured respectively, the reset piece provides pre-tightening force to ensure that the moving piece is always attached to the groove wall, and the guide piece limits the moving piece to move only in the direction perpendicular to the groove width direction, attaching deviation and direction deviation can be avoided, and the problems of manual reading errors and instable attaching are solved. And therefore, the detection requirements of high-precision parts can be met.

The invention relates to the technical field of parametric modeling, and discloses an automatic parametric modeling method and device for a three-dimensional groove model and a medium, and the method comprises the steps: presetting a reference surface, a shell thickness, a groove position, a groove direction, a groove width, a groove outer side depth, a groove inner side depth, a bottom hole shape and an opening inner diameter; taking the reference surface as the outer side surface of the shell, and obtaining the inner side surface of the shell, the surface where the inner contour of the outer groove is located and the surface where the inner contour of the inner groove is located through offset; based on the groove position and the tapping direction, a groove two-dimensional sketch is obtained, a bottom hole contour is constructed and stretched, an initial bottom hole cylindrical surface is obtained, and the initial bottom hole cylindrical surface intersects with the inner and outer contour surfaces to form an inner and outer groove inner contour model; and after enlarging the contour of the bottom hole, stretching and intersecting with the shell surface to obtain an inner and outer groove contour model. And finally, connecting each contour by using a ruled surface to generate a connecting surface and an inner groove and an outer groove, and sewing to form a complete groove three-dimensional model.

We provide forging techniques that ensure sufficient meat flow. [Solution] The groove width of the helical groove 44 provided in the punch body 43 is set to G1, and the groove width of the helical groove 23 provided in the helical die 21 is set to G2. The groove width G1 of the helical groove 44 is set to be wider than the groove width G2 of the helical groove 23. The helical groove 23 and the helical groove 44 are connected via a tapered groove 24 provided on the helical die 21 side. During forging, a portion of the material flows from the helical groove 23 into the helical groove 44 as shown by arrow (1).