755results about How to "Increase feed rate" patented technology

An end mill including a cylindrical body having (a) flutes each formed in the cylindrical body and each extending from an axially distal end of the cylindrical body toward an axially proximal end of the cylindrical body, (b) peripheral cutting edges each provided by one of widthwise opposite edges of a corresponding one of the flutes, and (c) end cutting edges each located at the axially distal end of the cylindrical body and contiguous to a corresponding one of the peripheral cutting edges. The end cutting edges include first and second end cutting edges, while the peripheral cutting edges include first and second peripheral cutting edges which are contiguous to the first and second end cutting edges, respectively. A first axial rake angle of the first end cutting edge is smaller than a second axial rake angle of the second end cutting edge, while a first radial rake angle of the first peripheral cutting edge is larger than a second radial rake angle of the second peripheral cutting edge.

An oxygen concentrator system that includes or can be expanded to include more than one compressor is provided. The system utilizes a controller that is adapted to selectively activate or deactivate one or more of the compressors to optimize system performance and efficiency. Multiple compressors can be selected to operate at the same time, thereby enabling the system to operate at a higher peak pressure, increase the recovery of the PSA cycle, and expand the product rate. The additional compressors can also be removed when not in use so as to reduce weight of the system. In some implementations, the system housing reserves a certain amount of space for accommodating additional compressors and related components, which can be added to the system as after market parts. In other implementations, the additional compressor can be located external to the system.

The invention belongs to the field of diamond wheels and particularly relates to a metal ceramic combination binding agent and a combination binding agent diamond wheel. The metal ceramic combination binding agent is composed of, by weight, 60%-80% of 663 bronze powder and 20%-40% of ceramic powder. The ceramic powder is homemade and composed of, by weight, 45%-60% of silicon dioxide, 20%-30% of boric oxide, 10%-15% of potassium oxide, 5%-10% of magnesium oxide and 2%-5% of calcium oxide. The combination binding agent diamond wheel is composed of, by volume, 25%-40%of diamond abrasive, 55%-75% of combination binding agent and 2%-3% of pore forming agent. When the diamond wheel made of the metal ceramic combination binding agent is applied to a five-axis cnc machine tool, the good sharpness and the good self-sharpening performance of a ceramic binding agent are kept and the advantages of high rigidity and the good shape-maintaining performance of a metal binding agene are obtained. The comprehensive processing efficiency is improved by 100% to 150%.

The invention discloses a small high-speed five-axis linkage machine tool, which comprises a foundation structure, a spindle box component and a cradle type worktable. The spindle box component is supported on the foundation structure, and a crossbeam with a frame-shaped structure is arranged on two upright columns to form a bridge-type portal structure. The torque bearing capacity of the crossbeam is improved, the small high-speed five-axis linkage machine tool has all advantages of a five-axis linkage machine tool in the prior art, and carries identical machining reacting force, the volume of a structural part is reduced, and the weight of the structural part is greatly lightened; a spindle box is positioned between two transverse rods of the frame-shaped crossbeam, overturning moment is eliminated, and the stability of the machine tool can be guaranteed; in addition, sizes of various components are greatly reduced on the premise of identical machining capacity, and the stroke of the machine tool can be large in the design; and by the aid of the structure, the machining precision is greatly improved, the machining range is greatly expanded, better dynamic characteristics and higher feeding speed and higher cutting speed can be realized, cutting and machining time is greatly shortened, better surface machining quality is obtained, and machining efficiency is enhanced.

The invention relates to a special shaped stone high-speed high-efficiency combined machining center with the functions of double five-axis linkage and synchronous cutting by double working heads, and relates to a device for processing stones. Active gantry structure is adopted in the machining center, the double-motor synchronous driving technology is adopted on the gantry beam, and synchronous high-speed driving is realized by the screw bar pair at the two sides; a milling working head component and a turning working head component are respectively arranged on the saddle of the beam, the vertical feeding mechanism thereof is formed by a suit of screw bar pair and a hydraulic pressure auxiliary mechanism; wherein, the milling working head can carry out rotation and scales division around the axis B, and the turning working head facilitates the same servo motor to realize rotation and scale division of axis A and cutting movement; the turning working head and the milling working head are arranged alternately, and both the turning process and the grinding processing can be carried out on stone articles at the same time. The machining center is provided with a numerical control system with the function of double five-axis linkage, and horizontal five-axis linkage machining and vertical five-axis linkage machining can be realized.

A cutting insert for milling operations, such as, face milling, slot milling, plunge milling, and ramping operations. The cutting insert exhibits a combination of favorable cutting edge strength, and unique cutting edge geometry, thus, allowing milling operations at relatively high feed rates. The cutting insert includes at least four cutting edges, wherein at least one of the cutting edges is a convex cutting edge. Certain embodiments of square cutting inserts will have four convex cutting edges which may be connected by nose corners. The convex cutting edge may comprise at least one of a circular arc, a portion of an ellipse, a portion of a parabola, a multi-segment spline curve, a straight line, or combinations of these. Wherein the convex cutting edge comprises a circular arc, the circular arc may have a radius greater than or equal to two times a radius of the largest circle that may be inscribed on the top surface.

A cutting insert includes an insert body having a polygonal plate shape. Rake faces are formed on polygonal surfaces of the insert body, and flank faces are formed on lateral faces of the insert body arranged around the polygonal surfaces. Main cutting edges are formed on side ridges of the polygonal surfaces at intersecting ridgelines between the rake faces and the flank faces. Each main cutting edge extends between two corners adjacent to each other in a circumferential direction of the polygonal surface among corners of the polygonal surface. When seen from a direction opposing the rake face, one end portion of the main cutting edge that stretches to one corner of the two corners has a convexly curved shape, and the other end portion of the main cutting edge that stretches to the other corner of the two corners has a concavely curved shape.

A rotary cutting end mill is provided. The end mill includes a shank section and a fluted section. The fluted section has a first end integrally attached to the shank section, a second end, and an outer surface. One or more helical teeth are disposed along the outer surface of the fluted section. Each helical tooth has a cutting surface and a relief wall that intersect to form an angle defining a helical cutting edge. The helical cutting edge defines an outer circumferential cutting path. The cutting surface includes first, second, and third sections, and first and second take-off peaks. The first take-off peak is disposed between the first section and second section. The second take-off peak is disposed between the second section and the third section.

The invention discloses an open type movement control card based on two-stage DSP parallel device and the control method. The system employs the two-stage control structure with plural CPU parallel processing for separating the general control function and the specific control function of the motor; the control-class CPU as the core of the control card, controls and coordinates the entire system operation; employing programmable logic gate array FPGA to construct communication interface, connecting the control central-class processing unit and execute-class motor control unit with the FPGA chip, realizing high-speed transmission of data and synchronizing control of motor vial FPGA controlling FIFO and the synchronizing status signal. The control method includes central processing discrete control trace, resetting and taking velocity inversion with execute-class CPU, and PID controlling servo motor via changing parameter position.

The invention discloses a carbon fiber composite rotary ultrasonic milling and grinding device and a carbon fiber composite rotary ultrasonic milling and grinding method. The carbon fiber composite rotary ultrasonic milling and grinding device comprises an ultrasonic generator, an ultrasonic transducer, an amplitude transformation pole, a tool, a tool handle and a machine tool body. The carbon fiber composite rotary ultrasonic milling and grinding method is achieved by using ultrasound to assist in milling and grinding so as to process non-ablating carbon/ carbon composite materials. According to the carbon fiber composite rotary ultrasonic milling and grinding device and the carbon fiber composite rotary ultrasonic milling and grinding method, frequency of an ultrasonic power source used in the carbon fiber composite rotary ultrasonic milling and grinding method is consistent with inherent frequency of the amplitude transformation pole, and therefore the effect that vibration applied onto the amplitude transformation pole can cause resonance of the amplitude transformation pole is guaranteed; ultrasonic milling and grinding is adopted, and therefore surface quality of a carbon fiber composite work piece is obviously improved, and roughness of the carbon fiber composite work piece is reduced by about 16%-36%; ultrasonic machining is adopted, and therefore stress in the feed direction of a grinding head is reduced by about 44%, and stress in the downward pressing direction of the grinding head is reduced by about 46%; ultrasonic processing temperature rise is reduced by 29% from comparison between ultrasonic milling and grinding temperature and traditional milling and grinding cutting temperature of a carbon fiber composite.

An apparatus, machine tool, and method for adaptively controlling a feedrate of a machine tool are provided in which a plurality of maximum spindle power and/or radial load values, each corresponding to a spindle rotational speed, are received, stored and applied. Additionally, the current spindle power and/or the current radial load, along with the current spindle rotational speed may be received. The current spindle power and/or the current radial load may be compared to the maximum spindle power and/or radial load corresponding to the current spindle rotational speed, such that the feedrate may be reduced if the current spindle power and/or the current radial load exceed the corresponding maximum spindle power and/or radial load for the current spindle rotational speed or increased if the current spindle power and the current radial load are below the corresponding maximum spindle power and/or radial load for the current spindle rotational speed.

Colloidal silica having an increased particle size and narrow particle size distribution is disclosed. A method for continuously producing the desired colloidal composition is disclosed comprising the steps of providing preformed silica particles having a surface area which controls the particle size of the colloidal silica product, adding a feed silica comprising an alkaline solution and silicate at a feed rate which is less than a nucleation rate, and increasing the feed rate as the feed silica is added wherein the feed rate is less than the nucleation rate.

The invention relates to a small gantry dual-spindle drilling milling tapping numerical control machine. The small two-axis gantry drilling tapping digital control machine essentially solves the technical problem of providing a drilling milling tapping machine with low cost and high efficiency for the light metal hardware processing of the communication and the consumption electronic industry, and the machine has the advantages of simple structure and stable and reliable operation. The technical proposals for solving this problem is as follows: a frame structure support welded with channel steel, a diamond-shaped rib square structure soleplate and a gantry beam are adopted; a sliding plate of the beam is equipped with dual spindles, and the dual spindles are respectively a high-speed drilling milling head spindle and a high-speed tapping head spindle. The drilling milling head spindle uses a high-speed knife replaceable electric spindle; the tapping head spindle uses a self-invented mechanical tapping spindle able to carry out the screw distance selection automatically. The drilling milling head spindle can install the tool magazine on the rear, left and right positions of the machine; the tool magazine uses row-type tool magazine, inverted bamboo hat style tool magazine or row-type tool magazine and the arbitrary combination methods of inverted bamboo hat tool magazine.

There is disclosed a heat-sealing method including: feeding a fusible fiber sheet (12) into the clearance between a pair of rolls (1, 5), at least one of which has sealing ridges (2, 6) of a predetermined pattern on its outer circumference; and heating and pressing the fiber sheet (12) with the sealing ridges (2, 6), to form fused portions corresponding to the pattern of the sealing ridges (2, 6), in the fiber sheet (12). An insulator (4) is disposed to cover the outer circumference of the rolls (1, 5), as lacking the sealing ridges. The insulator (4) is made of a material which has a lower thermal conductivity than that of the sealing ridges and which can be elastically contracted by the pressure of the rolls (1, 5). The fiber sheet (12) to be fed into the clearance between the rolls (1, 5) rotating is compressed by the insulator (4) to discharge its internal air and is then heated and pressed by the sealing ridges (2, 6) so that it is heat-sealed.

Systems and methods for combined controlling chlorinators and pumps for pools and spas are provided. Exemplary embodiments can include a pump operable to circulate a fluid for a specified time period according to a pump operation time setting and a chlorinator operatively coupled to the pump. The chlorinator can be configured to generate chlorine based on a chlorine output setting, a chlorine generation capacity of the chlorinator, and the pump operation time. A controller can be operatively coupled to the chlorinator and the pump and can be programmed to control the chlorinator and the pump based on a relationship between the chlorine output setting, a chlorine generation capacity of the chlorinator, and the pump operation time.

Process for the effective production of very wear-resistant layers in the thickness range of 0.2 to approx. 3 mm by way of inductively supported surface layer modification. It can be used particularly advantageously for the protection of components of hardenable steels and cast iron with abrasive, corrosive, high-temperature corrosive or mineral sliding wear loading. With the process according to the invention a local two-stage inductive short-time preheating takes place directly before the surface layer coating. Due to the invention it is possible to coat even hardenable steels or other materials difficult to coat without cracking. Furthermore, even harder coating materials susceptible to cracking which provide better wear-resistances can be used. In addition, process speeds and surface coating performances can be achieved that are higher by a factor of 10 compared with conventional laser build-up welding. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit, in any manner, the scope of the invention.

A reforming process in which a hydrocarbon feed containing aliphatic hydrocarbons is converted to a hydrocarbon product comprising an increased proportion of aromatics by passage over a reforming catalyst in a sequence of moving bed reactors operating under reforming conditions including moderate hydrogen pressure. The process is applicable when a former fixed moving bed reformer has been converted to moving bed reactor operation with the recycle and other ancillary equipment retained so that moderate pressure (hydrogen partial pressure at least 11 barg) is required, usually with a catalysts such as Pt/Re which tend to exhibit excessive hydrogenolysis activity in moving bed service. The recycle hydrogen stream is split with a portion going to at least one reactor subsequent to the first reactor.

A system and method are disclosed for producing uniform size silica particles by the steps of providing preformed colloidal silica particles having a surface area, adding an alkali metal silicate and a cation exchange resin to produce a quantity of feed silica at a feed rate which is less than a nucleation rate, and increasing the feed rate as the feed silica is added wherein the feed rate is less than the nucleation rate.