33 results about "Carbide saw" patented technology

The invention discloses a process for preparing hard alloy saw blade milling cutter, comprising following steps: coarse grinding two surface, semi-correct grinding two surface, grinding internal hole, grinding external circle, grinding gear form, grinding bottom rake and correct grinding two surface and correct grinding side clearance angle. The invention employs several times grinding to prepare ultra-fine particular hard alloy saw blade milling cutter, the thickness of blade milling cutter is very thin, side clearance angle 0degree8'-0degree12'is milled on work piece for further convenience of milling cutter.

The invention relates to a hard alloy saw chain of a chain saw. The welding face of a hard alloy tooth block and cutting teeth is made to be a cylindrical face, the arc radius of the cylindrical face is 2 to 5mm, and the optimal arc radius is 2.5 to 4mm. The shape of the tooth block is made to be similar to a frustum of a square pyramid, and the height of inner side face of the teeth block is lower than the height of outer side face of the tooth block. The tooth side face of the tooth block concaves inwards and perpendicularly, and a concave angle is 1 degree to 3 degrees. The intersection of the tooth top face of the tooth block and the tooth side face of the tooth block is made to be a circular bead, the tooth tip of the tooth block is made to be a section of arc line, the arc radius of the tooth tip is 0.2 to 0.8mm, and the optimal arc radius of the tooth tip is 0.3 to 0.4mm. According to the hard alloy saw chain, due to the adoption of butt welding, the hard alloy tooth block is welded with the cutting teeth, after the tooth block is welded, local high-temperature tempering is conducted, the joining strength of a welding line is 4 times higher than the jointing strength of brazing, the hard alloy saw chain is very firm, and no teeth drop during saw cutting.

The invention relates to a preparation method of a hard alloy saw blade, the method mainly comprises the following technological processes: 1. sand blasting processing is carried out to a saw blade basal body before welding, the material of the saw blade basal body is 65Mn steel plate, the thickness is 3 to 5mm, the harness is HRC40-50, and flow marks are cut on the surface of the saw blade basal body by laser; 2. the saw blade basal body is held by an aluminium splint; 3. hard alloy particles are welded at the outer edge of the saw blade basal body, the material of the hard alloy particles is YG8, before being welded, the hard alloy particles are soaked for 3 to 5 minutes and air-dried, and then acryloidcement are uniformly sprayed on the surface of the hard alloy particles, a layer of 200 meshes of red copper powder is uniformly spread on the surface, so as to lead the surface of the hard alloy particles to be adhered with a layer of dried copper powder, the welding flux for welding is compound welding flux according to the proportion that sodium borate : boracic acid is equal to 1 : 1, and flame welding sticks is oxygen-acetylene gas flame, when in welding, the temperature of the oxygen-acetylene gas flame is adjusted to 850 plus or minus 10 DEG C. The preparation method of the hard alloy saw blade can quickly cut various materials.

The invention relates to a punching die for producing a hard alloy saw-tooth tool bit, comprising a die body, an upper punch seat, a lower punch seat, an upper punch and a lower punch, wherein the upper punch and the lower punch are respectively installed on the upper punch seat and the lower punch seat, an upper fixing sheet and a lower fixing sheet are respectively arranged between the upper punch seat and the upper punch as well as between the lower punch seat and the lower punch; the upper punch is sleeved on the upper fixing sheet; the lower punch is sleeved on the lower fixing sheet; annular pad forks are also sleeved at two sides of the lower punch; the die body is placed on the upper end faces of the annular pad forks; a die cavity is formed by the upper end face of the lower punch and the die body; and the upper punch is correspondingly arranged above the die cavity. Because the annular pad forks, the upper fixing sheet and the lower fixing sheet are arranged, the punching die for producing the hard alloy saw-tooth tool bit has simple structure and is convenient for mounting and dismounting; when the punching die is produced, the damage to the lower punch, caused by stress concentrated on the lower punch, is avoided by means of the annular pad forks through stamping the upper punch and the lower punch in one step, and the stamping is stable, therefore, the production efficiency is greatly improved, the maintenance cost is saved, and the product quality is enhanced.

The invention relates to a preparation method of a hard alloy saw web, and belongs to the technical field of hard tools. The preparation method of the hard alloy saw web comprises the following stepsthat (1) a graphite mold is provided, and multiple layers of metal saw web base bodies are stacked in the graphite mold in the height direction; (2) hard alloy particles are pr-arranged in a gap between the edges of the metal saw web base bodies and the inner wall of the graphite mold; and (3) the hard alloy particles are covered with a molten metal bonding agent to form a saw web working layer. According to the preparation method in the embodiment, the technological process is simplified, special sintering powder does not need to be adopted for the metal bonding agent, and therefore the raw material cost can be reduced; and the metallurgical bonding strength between the saw web working layer and the saw web base bodies can be guaranteed through the saw web working layer formed through melting.

The invention discloses a multi-angle sawtooth cutting device for a hard alloy saw blade. The multi-angle sawtooth cutting device for the hard alloy saw blade comprises a cutting mechanism and a bearing mechanism; the cutting mechanism is installed on the upper end face of the bearing mechanism, and a limiting sliding barrel correspondingly slides for a corresponding distance in a sliding groove, so that the sawtooth machining angle is changed, and the sawtooth cutting flexibility is improved. According to the device, the other end of a curved bar is arranged in an inner cavity of a second fixing clamping plate and movably connected with the second fixing clamping plate; the top end of a push rod is connected with the inner side of a mounting plate, and the surface of a positioning plate is connected with a gear motor through a bolt, so that when the device cuts sawteeth of the hard alloy saw blade, an air cylinder drives a mounting plate to incline by a certain angle through the push rod so as to drive a cutting assembly to rotate by a certain angle, then sawtooth depth cutting is conducted on the saw blade, meanwhile, the up-down moving distance of the cutting assembly in the vertical direction can be adjusted through a bolt so that the sawtooth machining angle can be changed, and the machining requirement can be met conveniently.

The invention discloses a welding angle detection device for a hard alloy saw blade tool bit, belongs to the field of hard alloy saw blade detection, and aims to solve the problem in the prior art that detection efficiency is low since an artificial sampling inspection way is usually adopted for detecting the hard alloy saw blade. The device comprises a supporting rack, a tested hard alloy saw blade and a control unit, wherein the supporting rack is provided with a lifting and rotation unit and a laser detection unit, wherein the laser detection unit comprises a plurality of laser components;the laser components independently detect the upper surface, the lower surface and the outer side edge of the tested hard alloy saw blade; the lifting and rotation unit sends the tested hard alloy sawblade to a detection station; and the laser detection unit sends a detection signal to the control unit. By use of the device, tool bit welding angle detection can be efficiently and accurately realized, and powerful technical support is provided for the welding quality and the service life of the hard alloy saw blade.

The invention discloses a hard alloy saw blade and a welding method thereof. The method comprises the following steps: (S1) a hard alloy tool bit, a saw blade basal body, a welding wire and a flux areheated after placement; (S2) under 760-840 DEG C temperature environment, the molten welding wire is paved in a gap between the hard alloy tool bit and the saw blade basal body by using a wetting effect of the flux; (S3) a primary welding body is obtained by cooling; and when the temperature of the primary welding body is lower than 350 DEG C, the primary welding body is primarily tempered; and (S4) the primary welding body is secondarily tempered within 1-3 hours after primary tempering to obtain the hard alloy saw blade; the secondary tempering is performed in a closed container; and the temperatures in all space positions in the container are kept consistent. The tooth base rupture problem during cutting and the stress crack problem between adjacent saw teeth are solved.

The invention relates to a hard alloy saw blade and a machining process thereof, belongs to the technical field of metal machining tool manufacturing, and is suitable for being used in cooperation with a handheld tool. The hard alloy saw blade comprises a hard alloy strip, a saw blade main body and a mounting handle part; and the hard alloy saw blade is structurally characterized by further comprising saw teeth and welding points, the welding points are arranged on the mounting handle part, the welding points are connected with the saw blade main body, and the saw blade main body and the mounting handle part are of an integrated structure; and the hard alloy strip is connected with the saw blade main body, the hard alloy strip and the saw blade main body are of an integrated structure, thehard alloy strip is located at the side portion of the saw blade main body, the saw teeth are arranged on the hard alloy strip, and a connector is arranged at the mounting handle portion. According to the hard alloy saw blade, welding filler is not needed when the hard alloy strip and the saw blade main body are welded, and the hard alloy saw blade has the advantages of being firm in welding, convenient to machine, capable of reducing production and manufacturing cost, long in service life, wide in application range, high in cost performance, small in environmental pollution and the like.

The invention relates to a noise-proof cemented carbide saw blade, which comprises a saw blade body, a cemented carbide cutter head and a noise reduction device. The saw blade body is circular, and a through hole for fixing the saw blade body is provided at the center of the circle. , The saw teeth are evenly distributed on the peripheral edge of the saw blade body, and the saw teeth are inlaid with hard alloy cutter heads, and the noise reduction device is evenly distributed on the saw blade body. The invention has the advantages of simple and reasonable structure, convenient production and processing, good noise reduction and heat dissipation effects, high cutting precision, long service life and the like.