79results about How to "Reduce cutting vibration" patented technology

The present invention relates to a milling cutter provided with an equidistant arc head on an eccentric shape flank surface and a grinding method, the cutter can reduce the vibration during the process of processing of different hardness of hardened steels for splicing of a mould, the cutter life and workpiece surface quality can be improved, the flank surface shape can be changed, and the cutter tip strength can be improved. The milling cutter is an overall hard alloy end milling cutter. The milling cutter includes a cutter shank (1) and the arc head (2), the arc head includes a large curvature arc (2-1) and a small curvature arc (2-2). Tooth-spacing angles are 87 degrees, 93 degrees, 87 degrees, and 93 degrees, tooth-spacing vertical angles are equal, helix angle (r) is 38 degrees, helix angle (v) is 40 degrees, and cutter end cutting edge flank surface (10) and circumferential cutting edge (6) are in eccentric shape. Front angle is in the range of 0-3 degrees, first clearance angle is in the range of 8-10 degrees, and second clearance angle is in the range of 15-22 degrees. The center position of the cutter is provided with cooling channels (3), the number of the cooling channels is four, and the four cooling channels respectively are located four cutting edge end tooth chip pockets. The present invention also provides a reference for the grinding of the cutter of the type.

A locating system and method for accurately positioning key blanks with respect to a key cutter where the key head is clamped between opposing jaws with the key blade working edges projecting therefrom, the key head is provided with shaped recesses having at least a partially specifically shaped edge wall and wherein at least one jaw member is provided with a projection having a correspondingly shaped sidewall, the pin being positioned with respect to the clamp such that when the key blank head is abutted against the pin with the key blank edge configuration mating to the pin sidewall configuration, the key blade will project from the jaw in a proper position for engagement by either the bitting follower or bitting cutter respectively.

The invention relates to a damping cutter bar for turning coarse-pitch threads, and belongs to the field of machining. The damping cutter bar comprises a cutter bar shaft, a cutter bar shaft sleeve, an exciting coil, an upper permanent magnet, a lower permanent magnet, a piezoelectric ceramic piece, an end cover, a magnetorheological fluid and the like, wherein the exciting coil is wound on the cutter bar shaft, a coil lead of the exciting coil is connected with the piezoelectric ceramic piece, the magnetorheological fluid is injected into an annular cavity formed by the upper permanent magnetand the lower permanent magnet, and the piezoelectric ceramic piece is arranged in an annular cavity formed by the upper permanent magnet and the cutter bar shaft sleeve. According to the damping cutter bar, vibration can be suppressed when the coarse-pitch threads are turned, ever-changing current is generated by the piezoelectric ceramic piece due to cutting vibration and is transferred to theexciting coil through the coil lead, therefore, an ever-changing magnetic field can be generated by the exciting coil, so that the rigidity and damping of the magnetorheological fluid are quickly changed, the vibration reduction function is realized, and the surface quality of a to-be-processed workpiece is increased.

The invention discloses a digital controlled lathe special for engine air valve continuous full-automatic machining and a machining method thereof. A machine tool of the digital controlled lathe comprises a protective shell assembly, a lathe bed base assembly, a sliding saddle assembly, a material sorting and discharging assembly, a feeding and falling assembly, a main shaft assembly, a material clamping and pushing assembly, a pneumatic system assembly, a lubrication system assembly and a cutter seat assembly; the protective shell assembly protects all parts, the lathe bed base assembly supports all the parts, and three-degree-of-freedom moving of a cutter seat is realized through the sliding saddle assembly; the material sorting and discharging assembly realizes sorting of air valve workpieces and single material discharging, the feeding and falling assembly installs and clamps the air valve workpieces and collects falling finished products, and the workpieces are driven to rotate bythe main shaft assembly; the material clamping and pushing assembly clamps the workpieces and pushes the finished products, the pneumatic system assembly provides the pneumatic force, the lubricationsystem assembly lubricates all relative moving parts, and the cutter seat assembly clamps cutting tools. All the assemblies are coordinative, and full-automatic high-efficiency production of the engine air valves is realized.

The invention discloses a milling cutter, comprising a cutter body, cutting blades and a fastening piece, wherein the cutter body is at least provided with a group of cutter grooves; each cutter groove is internally provided with one cutting blade; each cutting blade is provided with a central hole and fastening piece connecting holes are arranged in the bottom surfaces of the cutter grooves; the head part of the fastening piece is pressed into the central hole and the tail part of the fastening piece passes through the central hole to be connected with the fastening piece connecting holes; the tail end of the fastening piece is provided with a first concave hole which is connected with a wrench in an inserting manner; and the fastening piece connecting holes pass through the cutter body. The milling cutter disclosed by the invention has the advantages of simple structure, convenience for attaching and detaching, relatively-increased blade number, high cutting efficiency, small cutting force and small vibration.

The invention discloses a cutting blade. The cutting blade comprises a plate-shaped blade body which is encircled by an upper surface, a lower surface and a side surface, wherein the upper surface and the lower surface are connected through the side surface; the upper surface and the side surface are intersected to form a plurality of cutting units which have the same structure; a cutting edge unit comprises a secondary cutting edge, a main cutting edge, and a corner cutting edge which is positioned between the secondary cutting edge and the main cutting edge; the secondary cutting edge and the main cutting edge are alternatively arranged in the circumference of the blade body; the main cutting edge comprises a first cutting edge, a second cutting edge, and a transition cutting edge for connecting the first cutting edge and the second cutting edge; the surface, vertical to the feeding direction of the cutting blade in hole drilling processing, is a reference surface O; in the upper surface direction, the secondary cutting edge is provided with one cutting slope, and the first cutting edge, the second cutting edge and the transition cutting edge are correspondingly provided with the cutting slope k1, k2 and k3 which meet the formula seeing the description. The cutting blade has the advantages of being high in cutting accuracy, small in cutting vibration, long in service life, etc.

The invention discloses a drilling tool. The drilling tool comprises a tool body; the tool body comprises a handle part, a cutting end part and a peripheral surface located between the handle part and the cutting end part; the handle part and the peripheral surface are symmetric about a rotation central axis of the tool body; a central groove and a circumferential groove which both communicate with a spiral groove in the circumferential surface are formed in the cutting end part, wherein the center groove is arranged adjacent to the rotation central axis, and the circumferential groove is arranged adjacent to the peripheral surface; cutting blades are arranged in the central groove and the circumferential groove, wherein the cutting blade arranged in the central groove is an inner blade, the cutting blade arranged in the circumferential grooves is an outer blade, and the inner blade and the outer blade are the same cutting blades; each cutting blade comprises a short cutting edge and a long cutting edge which are adjacent; the edge shape of each short cutting edge is different from the edge shape of the corresponding long cutting edge; the long cutting edge of the inner blade and the short cutting edge of the outer blade are combined to form a complete main cutting edge used for drilling a hole, the inner blade completes machining of a center area of the hole, and the outer blade completes machining of an outer ring area of the hole. The drilling tool has the advantages of being small in cutting vibration, high in machining precision, stable, reliable and the like.

The invention discloses an indexable drilling tool. The indexable drilling tool is characterized in that an inner blade is composed of a first upper surface, a first lower surface and a first side surface which is used for connecting the first upper surface with the first lower surface in a surrounding mode, the first upper surface and the first side surface intersect to form a plurality of identical inner cutting edges, during drilling machining, the cutting areas of the inner cutting edges serving as main cutting edges are located between middle inner points and middle outer points on the inner cutting edges, the cutting areas of outer cutting edges serving as main cutting edges are located between peripheral inner points and peripheral outer points on the outer cutting edges, in the feeding direction of the indexable drilling tool, an inner convex cutting part with the maximum cutting depth on the inner cutting edges and the outer cutting edges is arranged between the middle inner points and the middle outer points, the depth differences of the middle inner points and the peripheral outer points relative to the inner convex cutting part are correspondingly H1 and H2, and H1 andH2 should meet the following conditions that H1 is larger than or equal to 0.9H2 and less than or equal to 1.1H2. The indexable drilling tool has the following advantages that the cutting vibration issmall, the radial balance capability, is strong, the machining surface quality is good, and the size precision is high.

The invention discloses a modular drilling machining tool. The modular drilling machining tool comprises a cutting component, a clamping component, a center drill tip and two outer cutting blades, wherein the cutting component is provided with a cutting connector part and a cutting part, the clamping component is provided with a clamping connector part and a clamping part, the center drill tip andthe outer cutting blades are installed in the center and the circumferential position of the cutting part correspondingly, the two outer cutting blades are arranged on the two sides of the center drill tip to form a complete cutting unit with the center drill tip, a clamping concave part is arranged on the cutting connector part, a clamping boss is arranged on the clamping connector part, the clamping concave part penetrates through the circumferential face of the cutting connector part, the outer side face of the clamping boss is smoothly connected with the circumferential face of the clamping connector part, when the cutting component is installed on the clamping component in place, the clamping boss is arranged in the clamping recess and matched with the clamping recess to achieve circumferential positioning of the cutting component and the clamping component, and the modular drilling machining tool has the advantages of being convenient to assemble and disassemble, high in positioning strength and precision and the like.

The invention discloses a numerical control high-speed carving and milling machine of a bridge type elevated cross beam moving gantry. The numerical control high-speed carving and milling machine comprises a base, a left wall, a right wall, a cross beam, a front sliding seat, a rear sliding seat, a ram and a spindle. A workbench is arranged on the base, the left wall and the right wall are arranged on the base in parallel, and the workbench is located between the left wall and the right wall. The two ends of the cross beam are arranged on the left wall and the right wall, and horizontal moving pairs are formed by the two ends of the cross beam, the left wall and the right wall. The front sliding seat and the rear sliding seat are arranged in parallel, a horizontal moving pair is formed by the front portion of the front sliding seat and the cross beam, and a horizontal moving pair is formed by the rear portion of the rear sliding seat and the cross beam. The ram is located between the front sliding seat and the rear sliding seat, a vertical moving pair is formed by the front portion of the ram and the front sliding seat, and a vertical moving pair is formed by the rear portion of the ram and the rear sliding seat. The spindle is arranged on the lower portion of the ram and used for being provided with a carving and milling cutter. The numerical control high-speed carving and milling machine has the beneficial effects that due to the fact that the cross beam in the machine is supported by the left wall and the right wall, the down milling precision and the up milling precision of a workpiece are the same.

The invention discloses a multistage diameter change milling cutter. The multistage diameter change milling cutter comprises a shank; the front end of the shank is a multistage cutter rod with gradually reduced diameter; the front end of the cutter rod is a cutter bit; every two adjacent diameter change sections on the multistage cutter rod are conical transitions; chamfering angles are arranged at one ends, towards the shank, of the conical transitions; and multiple milling grooves are peripherally spaced in the outer wall of the multistage cutter rod. The multistage diameter change milling cutter is excellent in rigidity during cutting, effectively reduces the cutting vibration, can insert the thinner front end thereof into a deeper cavity for machining, enhances the machining adaptability, improves the manufacturing precision of complex curved surface structural parts of narrow deep cavities and deep cavity ultrathin structural parts, improves the machining efficiency, and effectively guarantees the production quality stability.

The invention relates to a machining process for a through hole in an angular combination device, in particular to a machining method for a through hole in an angular combination device. A machining clamp for the through hole in the angular combination device is adopted, and machining of the through hole in the angular combination device is achieved on a high-speed milling machine; a first combination part is positioned and clamped through an axial pressing bolt, an end face positioning block, a lateral pressing bolt and a lateral positioning block, and a through hole in the combination part is machined; and an axial positioning bolt is loosened, a second combination part is in inserted, angular combination is achieved, the pressing bolt is screwed, a tool is switched, a high-speed micro cutting milling method is adopted, and a through hole in the second combination part is machined. By means of the method, matching errors produced by through hole separated machining are well avoided,influences produced by different material cutting on a tool are avoided, the cutting movement phenomenon is reduced fundamentally, and the through hole machining quality is effectively improved.

The invention relates to an end mill which is made of zirconia ceramics. The end mill comprises a handle part, a conical transition part, a neck part and a cutting part which are connected in sequence. The cutting part comprises at least two outer circle blades which spirally extend around the outer side wall of the cutting part, and the spiral angle alpha is controlled to be 25 degrees to 42 degrees. The circumference blade front angle beta of the outer circle blades is controlled to be 5 degrees to 10 degrees, and the circumference blade rear angle gamma of the outer circle blades is controlled to be 12 degrees to 18 degrees. The outer circle blades extend to the end face of the cutting part to form end blades, and the rear angle delta of the end blades is controlled to be 10 degrees to18 degrees. In addition, the outer diameter of the cutting part is D1, the core thickness diameter of the cutting part is d, and d is equal to 65%-70% of D1. Thus, in the practical cutting process, the end mill has the low cutting vibration amount, a cutting edge is not likely to be subjected to an oxidation chemical reaction, and therefore the machining precision and the service life are effectively ensured. In addition, the tripping phenomenon extremely happens in the specific use process of the end mill, and therefore the fine degree of the cutting edge is ensured.

The invention discloses a tapered tension spring clamping device which is characterized by comprising a shaft, a fixed cone, a spring, a tapered tension spring, a movable cone and a mandrel. The fixedcone is fixedly mounted on the shaft, the movable cone sleeves the shaft, the spring is disposed between the movable cone and the fixed cone, and the spring sleeves the shaft. The mandrel is insertedin a center hole in one end of the shaft and is connected with the shaft through a movable pin. The exposed end of the mandrel is provided with a flange, and the flange can position the movable cone.The movable cone is provided with a material return pin. One end of the tapered tension spring is placed on the conical surface of the fixed cone, and the other end of the tapered tension spring is placed on the conical surface of the movable cone. The tapered tension spring clamping device is simple in structure, convenient to operate, safe and reliable. According to the tapered tension spring clamping device, rigidity of the tapered tension spring clamping device is enhanced, cutting vibration in the processing process is reduced, and processing precision is improved.

The invention relates to a grooving cutter which comprises a cutter blade and a cutter body, wherein the cutter body comprises a supporting part and a clamping part, and a cutter groove used for mounting and dismounting the cutter blade is arranged between the supporting part and the clamping part; the clamping part is provided with a clamping part front end, a clamping part limiting end and a clamping part rear end, the clamping part front end and the clamping part limiting end are separated through a front narrow groove, and the clamping part rear end is separated through a rear narrow groove; both the clamping part front end and the clamping part rear end have independent elasticity, and the clamping part limiting end is positioned above the clamping part front end. The grooving cutter has the advantages of being simple in structure, stable in clamping and high in supporting intensity and realizes multipoint clamping positioning.

The invention discloses a rotary machining cutter which comprises a rotary cutter body, wherein cutter slots are formed in the outer edge at the front end of the rotary cutter body; cutter holders are mounted in the cutter slots through cutter holder fastening components; cutting blades are mounted at the head parts of the cutter holders through cutting blade fasteners; adjusting structures are also mounted in the cutter slots; the adjusting structures are located between the tail part surfaces of the cutter holders and the tail part positioning surfaces of the cutter slots; all the surfaces, located between the tail part surfaces and the end surfaces of the cutter holders, of the cutter holders are circumferential surfaces of the cutter holders; each cutter holder fastening component comprises at least two cutter holder fasteners; and the cutter holders are locked by the cutter holder fasteners in different directions of the circumferential surfaces of the cutter holders. The rotary machining cutter provided by the invention has the advantages of positioning stability, strong vibration resistance, long service life, high machining precision and the like.