3389 results about "Tool bit" patented technology

The invention relates to the technical field of metal cutting, discloses metal plate laser cutting equipment with a laser head collision early warning function, and aims to solve the problem that the collision risk of an existing cutting head and a convex part of a thin plate is high. Through the displacement component, the laser cutter, the positioning assembly and the central control unit, a metal sheet to be machined is placed on the workbench, then the laser cutter is used for cutting the metal sheet to be machined, in the whole operation process, pictures on the workbench can be shot through the industrial camera, and the working efficiency is improved. The real-time image is displayed on the controller through the real-time image display module, an image model is established through the 3D modeling module, a worker can observe more visually, when an irregular thin plate is encountered, setting is conducted through the height compensation module at the moment, the position of a tool bit of the laser cutter is always at the same height with the thin plate, and the machining precision is improved. Once the set equal height changes, the collision alarm module gives an early warning, and the overall safety performance is improved.

The present invention provides a method for designing an abrasive water jet-disc cutter combined rock-breaking cutter head, a system therefor, a cutter head and a tunnel boring machine (TBM), wherein the key technology of designing the abrasive water jet-disc cutter combined rock-breaking cutter head of the TBM are provided from the aspects of determining a combined rock-breaking combination mode, configuration of cutter operation parameters and optimization of the combined cutter head; the performance of the abrasive water jet-disc cutter combined rock-breaking cutter head manufactured according to the optimized layout parameters is improved; and a new idea is provided for the development and application of a full-section rock tunneling machine in the field of underground engineering.

The invention discloses a deviation correction method, system and equipment based on a tool bit, and relates to the technical field of tool bit correction.The method comprises the steps that after a tool bit replacement correction request sent by a user side is received, the system executes first-time destination cutting, generates a destination cutting groove virtual model, extracts cutting parameters and compares the cutting parameters with preset parameters, and destination cutting deviation data is obtained; the system compensates the tool bit track and then executes second-time return cutting, a return cutting groove virtual model is generated, cutting parameters are extracted, and return cutting deviation data are obtained; the residual deviation is compared with a preset residual deviation threshold value, and whether the tool bit is corrected or not is judged; and if the correction is not completed, calculating a correctable value, and judging whether the return cutting deviation data can be continuously used for subsequent compensation or not. According to the method, whether the tool bit deviation can be compensated or not can be dynamically judged according to actual conditions, system oscillation caused by blind correction is avoided, rapid detection, effective compensation and intelligent decision making of the tool bit deviation are achieved, and the cutting precision and the system stability are improved.

A material penetrating tool includes a shaft portion defining a central axis, and an enlarged cutting portion extending downwardly axially from the shaft portion. The enlarged cutting portion includes a rearward blunt surface, a front cutting surface, a first side surface and a second side surface, and the first side surface and the second side surface define an angle of extension measured in a plane perpendicular to the central axis, forming a wider forward cutting surface than the rearward blunt surface in a plane perpendicular to the central axis.

The invention relates to the technical field of diamond saw blades, in particular to a laser welding diamond saw blade for ultra-narrow slit cutting and a preparation method of the laser welding diamond saw blade. The copper-cobalt-tin alloy material comprises the following raw materials: copper-cobalt-tin alloy powder, tungsten carbide powder, titanium-aluminum nitride, spherical cobalt powder, rare earth yttrium powder, ferrophosphorus powder and diamond abrasive particles. According to the preparation method, the core of the preparation method lies in the combination of powder metallurgy prefabrication of the tool bit and the precise laser welding process, especially the innovative laser welding process, and the prepared diamond saw blade is high in welding seam strength, narrow in heat affected zone and extremely small in matrix deformation; the problems of base body deformation, insufficient welding seam strength, short service life and the like of a traditional saw blade in the ultra-narrow seam cutting process are solved, and the saw blade is perfectly suitable for ultra-narrow seam cutting scenes with extremely high requirements for precision and stability.

The invention discloses a vertical milling numerical control machine tool for machining shaft parts, relates to the technical field of milling numerical control machine tools, and solves the technical problems that a tool bit is relatively tedious to replace, shaft quality cannot be detected in an auxiliary manner, and the shielding area of a workpiece is difficult to machine, the vertical milling numerical control machine tool comprises a main body frame and an adjuster, and a tool bit mounting frame is arranged at the bottom of the adjuster; a connecting cylinder is arranged at the bottom of the connecting block; a sliding frame and a tool bit mounting plate are arranged in the connecting cylinder; a sliding chute and a supporting chute are formed in the tool bit mounting frame; a sliding rod is arranged on the surface of the sliding frame; according to the tool changing device, rapid tool changing is achieved through driving of the tool push rod, the tool changing time is greatly shortened, the rotating disc drives the tool bit clamping frame to fix a tool bit through a clamping block and a clamping groove, and the machining precision is guaranteed.

The application discloses a cutting force self-sensing turning tool system and method, which comprises a tool shank tail, a groove, a tool head, a blade and a blade groove; the tool shank tail is connected with the tool head through a tool shank, the tool shank is an elastic square beam, the tool head is partially provided with the blade groove, the blade is arranged in the blade groove, four surfaces of the tool shank close to the tool head are provided with four grooves which are completely identical in structure, the grooves are sensing parts of the cutting force self-sensing turning tool system, and a self-sensing component is fixedly integrated on the four surfaces of the grooves. The application has simple structure, only needs to arrange the grooves on the tool shank close to the tool head, integrates the self-sensing component on the surfaces of the grooves, has low manufacturing cost and high measurement precision.

The invention relates to a geological radar advanced forecasting system for TBM shield construction and a detection method, which are characterized in that a transmitting antenna and a receiving antenna are arranged in a tool bit gap of a TBM shield machine, rotation of a tool bit is not affected, measurement can be carried out when the tool bit rotates, and a three-dimensional structure section right in front of the tool bit is further acquired; a method of forming obvious reflection based on geological body physical property dielectric constant difference is adopted, the TBM shield tunneling advancing direction is detected and imaged, a geological structure image is obtained, then geological information such as faults, rich water, cavities and boulders is provided, the influence of geological difference is small, and testing is more accurate compared with a seismic wave method; the receiving antenna and the transmitting antenna are arranged in the tool bit gap of the TBM, the receiving antenna and the transmitting antenna are not affected by the blade, rotation of the tool bit is not affected, and stability and accuracy of rotation measurement of the whole set of forecasting system can be guaranteed.

A bending center having an automatic tool change function. The bending center is provided with an automatic tool change device (a), a tool bit holder (50), a first tool bit holder driving unit (60) and a second tool bit holder driving unit (70); the automatic tool change device (a) is arranged on a tool pressing frame (30) and vertically reciprocates directly above a support plate (11) along with the tool pressing frame (30); moreover, the first tool bit holder driving unit (60) is arranged on a machine frame and drives the tool bit holder (50) to reciprocate in a front-rear direction, and the second tool bit holder driving unit (70) is arranged on the machine frame (10) and drives the tool bit holder (50) to simultaneously reciprocate vertically and in the front-rear direction. The cooperation between the first tool bit holder driving unit (60) and the second tool bit holder driving unit (70) enables the tool bit holder (50) to have a greater amount of different movement ranges, makes a product have more bent angles, and causes the bending center to have fewer limitations in use, thereby satisfying the requirement for processing products of different sizes without providing more pressing tools, and usage costs are thus reduced.

The utility model relates to the technical field of shaft sleeve machining, in particular to an automatic machining device for a shaft sleeve, which comprises a machine tool, two sets of tool bit mechanisms are symmetrically fixed on the machine tool, a feeding mechanism and a fixing mechanism are respectively arranged between the two sets of tool bit mechanisms, and a material groove in the fixing mechanism and a feeding table in the feeding mechanism jointly clamp the shaft sleeve. The tool bits at the two ends of the shaft sleeve body chamfer the shaft sleeve; the device clamps the shaft sleeve once to finish chamfering operation, so that the tedious chamfering process of the shaft sleeve is reduced, and the production efficiency is improved.

The invention discloses a turning device for steel pipe pole production, and particularly relates to the technical field of workpiece turning, the turning device comprises a turning rack and a steel pipe pole main body, and a turning tool bit frame used for turning the end face of the steel pipe pole main body is mounted in the turning rack; a stable cutting assembly used for rigid supporting and heat conduction with the interior of the steel pipe pole body is arranged in the turning rack. The stable cutting assembly comprises a plurality of stable frames installed in the steel pipe pole body, and the top of each stable frame is fixedly connected with a dispersed support. The stable frames and the steel pipe pole body are in multi-point contact design, the scattered supports can be driven to synchronously support the steel pipe pole body in a multi-point mode, it is effectively avoided that the stable frames directly cover the interior of the steel pipe pole body in a large area, large-area shielding on a heat dissipation face is avoided, and discharging can be smoothly conducted through the discharging-in channels in the tops of the scattered supports; and the problem of local overheating caused by turning heat accumulation is effectively avoided, and finally the completeness of turning machining of the steel pipe pole body is guaranteed.

According to the swinging shaving device with the locking structure, the swinging connecting piece is arranged between the tool bit assembly and the machine body, the swinging function of the tool bit assembly on the machine body is achieved, the tool bit assembly can be better attached to different skin surface contours, and the shaving effect and comfort are improved. When a part with an uneven skin surface is encountered, the tool bit assembly can flexibly swing under the support of the swing connecting piece, so that the tool bit is always in close contact with the skin, and the hair is shaved cleanly. Due to the fact that the tool bit assembly is rotationally connected with the swing connecting piece, the flexibility of the tool bit is further enhanced, and the tool bit can adapt to different shaving angles.

The utility model discloses a mute damping pneumatic knife which comprises a shell, an air inlet assembly installed in the shell, a moving assembly driven by high-pressure air to reciprocate, a knife head arranged at the front end of the moving assembly and moving up and down along with the moving assembly, an exhaust assembly used for guiding air to be exhausted and a damping assembly. The damping assembly comprises a buffering sleeve, a spring and a guide ring, the guide ring is clamped in the shell, the buffering sleeve and the moving assembly are assembled into a whole and are installed on the shell in a suspended mode through the guide ring, and the spring is installed between the buffering sleeve and the shell. High-pressure gas drives the motion assembly to reciprocate at a high speed to drive the cutter to perform efficient vibration cutting, vibration caused by motion of the motion assembly is effectively reduced through the damping assembly, the cutter is almost free of vibration, the cutting quality is improved, the service life of the cutter is prolonged, and the pneumatic cutter is relatively simple in structure, low in maintenance cost, high in reliability and suitable for popularization and application. And a silencer is also arranged, so that the noise during working is effectively reduced, and a better working environment is provided.

The utility model relates to a composite device for cleaning the edge of a sleeve, which comprises a spline shaft, a bearing arranged at the bottom of the spline shaft, a gasket arranged at the bottom of the bearing, a spring arranged at the bottom of the gasket, a cover plate arranged at the bottom of the spring, a cutterhead arranged at the bottom of the cover plate, and a scraper arranged at the edge of the outer side of the cutterhead. A secondary cleaning mode is adopted, most rubber mats are removed through a bottom tool bit, and then back gouging is conducted through a scraper; synchronous floating and rotation of the cleaning device are met through a spline pair; a floating assembly structure can realize self-adaptive adjustment of the height change of a workpiece under the condition that the downward pressing height of a main machine is fixed, so that the fit of a scraper and the workpiece is ensured, and different downward pressing heights do not need to be controlled every time; the scrapers are fixed through screws and can be combined with workpieces of different specifications to be properly adjusted, and meanwhile the scrapers are independent parts and are convenient to maintain and replace in the later period.

The present application belongs to the technical field of seedling raising, and provides a seedling raising and pruning device, which comprises a mounting seat, a first cutter seat and a second cutter seat oppositely arranged on the mounting seat, a first through hole formed in the first cutter seat, a first cutter head arranged on one side of the first cutter seat away from the second cutter seat and used for removing end leaves of seedling branches, a second cutter head and a first elastic member arranged on one side of the first cutter seat close to the second cutter seat, a cutter groove matched with the second cutter head arranged on the second cutter seat, a second through hole formed in the second cutter seat, a centering assembly fixedly connected to one side of the second cutter seat away from the first cutter seat and used for positioning and clamping seedling branches, a clamping assembly arranged on one side of the centering assembly away from the second cutter seat and used for clamping seedling branches, and a shearing assembly used for shearing seedling branches. The present application solves the technical problem that the treatment of seedling branches before cutting in the prior art relies on manual operation, which is time-consuming and laborious and has low production efficiency, saves time and labor cost, and improves production efficiency.

The utility model provides an anti-chip-sticking metal ceramic milling cutter. The anti-chip-sticking metal ceramic milling cutter comprises a connecting column, the knife handle is arranged in the connecting column; the tool bit is arranged at one end of the tool handle, a chip removal groove is formed in a chip cutting part of the tool bit, and the tool handle and the tool bit are made of metal ceramic materials. The threaded rod is rotated to drive the conical block to move upwards, so that the threaded rod is separated from the screw hole, at the moment, the trapezoidal block is reset through the spring, the fixing rod is separated from the inserting hole, and then the extending length of the tool bit can be adjusted; and meanwhile, the conical block moves downwards to extrude the trapezoidal block and the fixing rod to move and compress the spring, so that the fixing rod extends into the insertion hole, and the cutter handle is fixed through the threaded rod and the fixing rod, so that the effect of adjusting the overall length of the milling cutter according to use requirements is achieved, and the use flexibility, applicability and efficiency of the milling cutter are effectively improved.

The utility model provides a tool bit assembling device which comprises a machine table, a rotatable first index plate is arranged on the machine table, a support feeding station, a movable cutter feeding station, a fixed cutter feeding station, a first welding station, a first detecting station and a discharging station are sequentially arranged on the first index plate, and each station is provided with a first jig. The support feeding station, the movable cutter feeding station and the fixed cutter feeding station are used for feeding supports, movable cutters and fixed cutters correspondingly, a first welding mechanism is arranged on the outer side of the first welding station and used for welding the fixed cutters and the supports, and a first detection mechanism is arranged on the outer side of the first detection station and used for detecting whether tool bits are assembled in place or not. A discharging mechanism is arranged on the outer side of the discharging station and used for discharging finished product tool bits. By means of the mode, automatic welding, detecting and discharging of the tool bit are achieved, the working efficiency is effectively improved, and the labor cost is reduced.

A power tool including a housing and a motor mounted in the housing and operatively connected to a tool holder arranged to hold a cutting tool bit. At least one guide post has a longitudinal axis slidably mounted to the housing such that the housing is moveable in a direction parallel with the longitudinal axis between a retracted position and a plunged position. A base portion is fixed to the at least one guide post and a slide bearing is mounted between the housing and the at least one guide post. The slide bearing is slidable with respect to the at least one guide post when the housing moves between the retracted position and the plunged position. The slide bearing includes at least one dampening element arranged to dampen movement of the at least one guide post with respect to the housing in a direction perpendicular to the longitudinal axis.

The utility model provides a novel Chinese cabbage digging trolley. The novel Chinese cabbage digging trolley comprises a frame, a driving unit, a transmission mechanism, a digging mechanism and a collecting device. The frame is made of aluminum profiles and steel materials, and the front end of the frame is provided with an open groove for containing the excavating mechanism. The digging mechanism forms a double-crank structure through cooperation of a first rotary disc, a second rotary disc and a tool rest so as to achieve rotation and telescopic movement of a tool bit, and digging and conveying of Chinese cabbages are completed. And stepless adjustment of the digging depth can be realized. The collecting device is of a double-layer net structure, and efficient buffering and collecting of Chinese cabbages are guaranteed. The digging efficiency can be remarkably improved, the labor intensity is reduced, the method adapts to complex terrains, the requirements of small farmers are met, and the wide application prospect is achieved.

The invention relates to the technical field of diamond saw blades, and provides a diamond saw blade and a preparation method thereof. The diamond saw blade comprises a disc base body and a tool bit fixed to the periphery of the disc base body, and the tool bit is prepared from, by weight, 30-45 parts of iron powder, 15-25 parts of copper powder, 8-12 parts of nickel powder, 8-15 parts of cobalt powder, 3-5 parts of tin powder, 2-5 parts of molybdenum powder, 1-3 parts of silicon-boron alloy powder, 0.5-2 parts of tungsten carbide powder, 20-25 parts of diamond particles and 0.05-0.1 part of liquid paraffin. According to the diamond saw blade provided by the invention, the scientificity and the accuracy of proportion matching of all the components in the raw material formula of the tool bit are improved, the stability of the sintering process is improved, and the condition that the hardness and the toughness of the tool bit are difficult to achieve the optimal balance is improved.

The wire stripper comprises a male base assembly and a female base assembly, a first space is formed between the male base assembly and the female base assembly, connecting rods are arranged on the two sides of the male base assembly, the connecting rods penetrate through the first space to be movably connected with the female base assembly, and a cutter assembly is arranged in the male base assembly. The tool assembly comprises a rod body, a tool apron and a tool bit, the tool bit extends into the first space, the rod body penetrates through the male seat assembly and is locked by the male seat assembly, the male seat assembly is further provided with an unlocking assembly, and the unlocking assembly is used for unlocking the locking state of the rod body and the male seat assembly and enabling the rod body to rotate in the male seat assembly in the axial direction. According to the invention, the wire body is clamped between the male seat assembly and the female seat assembly, compared with the traditional clamping by using a clamping jaw, the clamping is more stable, the wire body is not easy to fall off in the wire stripping process, and in addition, the characteristic that the rod body rotates in the male seat assembly is utilized, so that the wire stripping operation can be completed by a single hand, and the wire stripping device is more convenient for an operator to use.

The invention discloses a grinding machine tool for machining an inner spherical surface, and relates to the technical field of spherical workpiece grinding. A grinding assembly, a driving assembly and a driving motor are mounted on the top surface of the base; the grinding assembly comprises a spindle rotationally installed on the base, the front end of the spindle is connected with a tool apron, the rear end of the spindle is connected with the driving end of the driving motor, the middle of the tool apron is hinged to the spindle, a tool bit is installed at the front end of the tool apron, and an adjusting connecting rod is hinged to the rear end of the tool apron. A sleeve capable of sliding in the axial direction of the main shaft is arranged on the main shaft, the free end of the adjusting connecting rod is hinged to the sleeve, and a driving assembly for driving the annular groove to slide in a reciprocating mode along the main shaft is arranged on the base. According to the method, shutdown calculation and calibration are not needed, and the auxiliary time is greatly shortened; meanwhile, manual operation is replaced by mechanical transmission, personal errors and multiple clamping deviations are avoided, the problem of connection dislocation of segmented grinding is solved, and the inner spherical surface contour continuity and micron-order machining precision are guaranteed.

The utility model relates to an assembling auxiliary tool for a tool bit assembly. The assembling auxiliary tool comprises a positioning platform, a frame seat, a positioning base, a sliding rail, a first clamping seat, a second clamping seat, a tensioning module, a tension spring, a pressing module, a jacking movable platform and a positioning pin. On one hand, all parts of the tool bit assembly are sequentially positioned and assembled in an aligned mode from top to bottom based on the frame base, the positioning base, the chuck and the buckle, then the positioning pin is inserted into the lower portion of the fixed tool apron and the lower portion of the spring in an aligned mode based on jacking of the jacking movable platform, and therefore all assembly of the assembly is completed, and assistance is formed for end welding. The assembling difficulty is reduced, the assembling precision is improved, and the probability of missing components is greatly reduced; and on the other hand, the adopted assembly operation is convenient, clamping positioning or loosening separation can be carried out only by rotating the tensioning module, the spring can be kept to be aligned and assembled in a free state, then the deformation rate of the spring is reduced, and the relative movement shearing quality of the movable cutter and the fixed cutter is improved.

The utility model discloses a blade assembly position locking device of a cutter. More than three locking grooves are formed in a cutter handle at intervals. The sliding block is arranged in the cutter handle in a sliding mode. The blade assembly is rotatably mounted at the front end of the sliding block and is provided with more than two positioning grooves; the locking mechanism comprises a locking piece and an elastic reset piece, the locking piece can move between a locking position and an unlocking position, the elastic reset piece is used for providing elastic force for the locking piece, and when the locking piece is located at the locking position, the first positioning part is in positioning fit with the positioning groove so that the rotation angle of the blade assembly can be locked at the current angle position; meanwhile, the second positioning part is matched with the locking groove in a positioning mode so that the moving position of the blade assembly can be locked at the current moving position, the button is pressed to drive the locking piece to move to the unlocking position so that the positioning matching between the first positioning part and the positioning groove can be relieved, and meanwhile the positioning matching between the second positioning part and the locking groove can be relieved. The structure is simpler, and spare and accessory parts are fewer.

The invention relates to the technical field of numerical control machining, and discloses an end mill tool bit parameter optimization method which comprises the following steps: step 1, collecting cutting force data, cutting temperature data and machining vibration data in a machining process in real time through a sensor group integrated on an end mill tool bit; the sensor group comprises a strain sensor, a temperature sensor and a vibration sensor; 2, the collected cutting force data, cutting temperature data and machining vibration data are subjected to wireless processing; according to the technical scheme, a closed-loop control system is constructed, the feeding speed, the cutting angle and the cutting depth are automatically adjusted according to dynamically-changed cutting force and vibration data, it is ensured that the machining process is always kept within a stable interval, the machining precision and the surface quality of a workpiece are effectively improved, and the machining efficiency is improved. Compared with the technical scheme that fixed preset parameters are adopted for machining in the prior art, the defect that the precision and quality of the workpiece are finally damaged due to process instability caused by the fact that adaptive adjustment cannot be achieved is overcome.

The invention provides a metal plate surface grooving device and method, and belongs to the technical field of metal plate grooving. Comprising a milling machine body, a driving mechanism is fixedly connected to the top of the milling machine body, an adjusting base is fixedly connected to the bottom of the milling machine body, and a grooving platform is installed on the adjusting base; one side of the driving mechanism is connected with a tool bit switching mechanism, and the tool bit switching mechanism is connected with a tool bit unit. The tool bit switching mechanism, the tool bit unit and the locking mechanism are arranged, the tool bit switching mechanism is used for containing a plurality of common milling tool bits, when the tool bits need to be replaced to open grooves in other shapes in a metal plate, the tool bits can be directly switched through the tool bit switching mechanism, and then the tool bit unit is fixed to the locking mechanism, so that the tool bit switching mechanism is convenient to use. The milling cutter can be quickly replaced by a manual operation, so that the time for replacing the milling cutter is greatly saved, and the milling cutter can be directly replaced through manual operation without other tools.

The invention discloses a path optimization method applied to laser cutting and laser cutting machining equipment, and relates to the technical field of numerical control machining. The path optimization method comprises the following steps that S100, all machining contours are obtained; s200, the obtained machining contours are sorted; and S300, the cutting path is optimized, the final position of the current cutting path is modified, and the linear distance between the modified final position and the next cutting position is made to be minimum. By calculating the next cutting position and optimizing the cutting path, the effect of avoiding the cut area without increasing the stroke in the rapid cutting process is achieved, and the cutting efficiency and safety are improved. The risk that the tool bit collides with a cut area is reduced, and the cutting efficiency and safety are improved.

The invention belongs to the technical field of five-axis machining, and particularly relates to a five-axis high-speed external milling machine for crankshaft machining, the five-axis high-speed external milling machine comprises a five-axis external milling machine body and a crankshaft body, a total operation arm is mounted on the five-axis external milling machine body, an operation support arm is mounted on the total operation arm, and a transmission shaft is rotatably arranged in the operation support arm. Under the action of the cooling and pressurizing assembly, external air enters the pressurizing base to be pressurized, the cooling and pressurizing assembly is matched with the lubricating assembly to enable low-temperature lubricating oil to cool air pumped into the pressurizing base, finally, high-pressure cold air is exhausted through the high-pressure air outlet pipe, and the primary cooling effect on the tool bit body is achieved; the temperature of the workpiece and the cutter is controlled to a great extent, thermal deformation of the crankshaft is reduced, extremely high machining size stability and geometric accuracy are ensured, meanwhile, the machining time is remarkably shortened, and the production efficiency is improved.

A reciprocating type tool bit comprises a movable cutter set, and the movable cutter set comprises a movable cutter base which is driven by a transmission part to reciprocate and is roughly in a T shape, a middle cutter assembly and a side movable cutter assembly, and the middle cutter assembly and the side movable cutter assembly are sequentially installed on the movable cutter base in a stacked mode from top to bottom. The middle cutter assembly comprises a central moving cutter corresponding to the skin-friendly groove area of the main cutter face, a plurality of middle cutter floating elastic pressing pieces used for elastically supporting the central moving cutter on the moving cutter base, and a four-corner outer / inner eight-type supporting structure formed at the lower bottom of the central moving cutter in a bilateral symmetry mode. The middle cutter assembly is installed above the side moving cutter assembly in the containing groove in a non-contact stacking mode through a four-corner outer / inner eight-type supporting structure and the side moving cutter assembly. According to the four-corner outer / inner eight-type supporting structure, the middle movable cutter assembly and the side movable cutter assembly are installed in the cutter head in a non-contact mode, the central movable cutter has the vertical floatability, the central movable cutter is matched with the main cutter face in a self-adaptive mode and is tightly matched with the main cutter face, and the cutting efficiency is improved.

The welded steel pipe chamfering machine table for the crawler crane tower comprises an L-shaped frame, an air cylinder is fixedly connected to the end wall of the top of the frame, and a fixing base is in transmission connection to the lower end wall of the air cylinder. The welded steel pipe chamfering machine table for the crawler crane tower has the beneficial effects that during chamfering, the liquid base is assembled and connected to the side wall of the fixing base through the positioning screws, the liquid base is convenient to disassemble and assemble, a liquid conveying pipeline is connected to a liquid pipe opening of the liquid base, liquid is poured into an inner cavity of the liquid base and then sprayed out through a spraying hole in the end wall of the right side of a penetrating opening of the liquid base, and therefore chamfering is achieved. The end wall of the right side of the penetrating opening is inclined, spraying holes formed in the end wall of the right side of the penetrating opening are inclined and annularly distributed in a round hole in the right side of the penetrating opening, the spraying holes spray liquid, the liquid is poured to the chamfering tool bit from the chamfering tool bit by 360 degrees, and the chamfering tool bit is protected; the chamfering tool bit is protected in all directions without dead angles, and the cooling effect of the chamfering tool bit is improved.