46results about "Broaching accessories" patented technology

The utility model discloses a broaching machine protection device which comprises a protection plate and a magnetic adsorption piece. The protection plates are detachably connected to the two sides of the broaching machine in pairs and form a protection area. The magnetic adsorption pieces are arranged on the inner sides of the two protection plates in pairs, and the surface area of each magnetic adsorption piece is at least one third of the surface area of the inner side of each protection plate. The protective structure of the main body is constructed by arranging the protective plates; furthermore, the magnetic adsorption part is used for adsorbing the iron chips in a large area, and the problems that the iron chips splash and are difficult to clean are effectively solved.

The invention discloses a horizontal slotting broaching machine for a large workpiece, which belongs to the technical field of broaching machines, and is characterized by comprising a base, a clamp arranged on the base and used for clamping the workpiece, a broaching tool apron arranged on the base in a sliding manner, a tool connected to the broaching tool apron, a fixed seat arranged on the base in a sliding manner, and a tool bar connected to the fixed seat, a supporting inclined block is arranged on the tool bar in a sliding mode and used for supporting a tool bit of the tool, the tool, the tool bar and the supporting inclined block all stretch into a workpiece, a first driving piece used for driving the broaching tool base to slide in the horizontal direction is arranged on the base, and a second driving piece used for driving the supporting inclined block to slide in the horizontal direction is arranged on the broaching tool base. When the second driving part drives the supporting inclined block to slide, the supporting inclined block can support the tool bit of the tool to move upwards in the vertical direction, the workpiece is clamped and placed in a horizontal posture when the broaching machine is used for machining, and therefore feeding, clamping and positioning of the large workpiece are more convenient and faster, and machining of the large workpiece is safer and more stable.

The invention discloses a vertical grooving machine, which belongs to the technical field of broaching machine equipment, and adopts the technical scheme that the vertical grooving machine comprises a rack, a clamp, a slide carriage, a broaching tool, a feeding mechanism and a retracting mechanism, a workbench is arranged at the top of the rack, a guide rod with a sliding chute is arranged on the workbench, and an avoiding hole for the broaching tool to penetrate through is formed in the workbench; the clamp is arranged on the workbench and used for limiting a workpiece, the slide carriage is connected to the rack in a sliding mode, and a broaching driving piece for driving the slide carriage to slide is arranged on the rack; the broach comprises a rotating seat, a cutter bar and a cutter, the rotating seat is rotationally connected to a rotating shaft arranged on the slide carriage, the lower end of the cutter bar is connected with the rotating seat, the upper end of the cutter bar is located in the sliding groove and abuts against the cutter feeding mechanism, and the cutter is installed at the upper end of the cutter bar; the feeding mechanism and the retracting mechanism are arranged on the slide carriage in a spaced mode, the feeding mechanism can push the cutter bar to the workpiece, and the retracting mechanism pushes the cutter bar to be away from the workpiece. The machine tool is small in overall size, needs fewer parts, and can be effectively matched with key groove machining of small workpieces.

The invention relates to the technical field of lock ring machining, in particular to a sawtooth-shaped lock ring machining device which comprises an upper tool, a lower tool, a lower tool, a lower tool, a lower tool and a clamping device. The lower tool comprises a limiting section and a positioning section fixed to the lower portion of the limiting section, the limiting section is provided with a containing groove used for containing the lock ring, the groove bottom of the containing groove is provided with a through hole vertically and downwards penetrating through the limiting section and the positioning section, and the through hole is located under the mounting hole; the fixing seat is used for fixing the position of the lower tool; the internal tooth broach comprises a cutting part and a cylindrical rod body, and the cutting part is arranged in the middle section of the rod body. According to the scheme, the problem that when sawteeth on the inner side of the sawtooth locking ring are machined at present, an inner tooth broach is likely to be broken due to inclination of the inner tooth broach is solved.

The present application relates to the technical field of machining, in particular to a supercharger spindle mortise broaching tool and its assembly and detection method, the supercharger spindle mortise broaching tool comprises a positioning body, two hanging ring screws, a bushing, a plurality of first screws, a second positioning pin, a broach guide body, a plurality of third washers, a plurality of sixth screws, two third positioning pins, a bottom guide plate, a plurality of fourth screws, two side guide plates, a plurality of eighth screws, a right upper pressing plate, a left upper pressing plate, a plurality of third screws, a bottom plate, a plurality of seventh screws, a plurality of fourth positioning pins, a positioning ring, a plurality of fifth screws, four sleeve rings, four second washers, four screw rods, four springs, four pressing plates, four first washers, four hexagonal nuts, a protractor disc, a positioning disc, a second screw, a first positioning pin, a spindle, a tension nut, a positioning bolt and a positioning bushing; the present application provides a spindle mortise broaching tool, which can assist in the mortise processing of the spindle.

The present application relates to broaching technology field, specifically disclose a large turbine disk mortise broaching machine main transmission device, including the casing, the top of the casing is hinged with machine cover, the surface of the machine cover is provided with a notch, the both sides of the casing are provided with a strip-shaped mouth, the inner bottom wall of the casing is fixedly installed with the coaming, the inner side of the coaming is fixedly installed with the shell, the large turbine disk mortise broaching machine main transmission device, the displacement driving motor drives the rotation of the lead screw, the lead screw drives two lead screw sleeves to be synchronized to approach, the rack assembly, the driving assembly and the cleaning assembly will be folded by sliding sleeve on the slide bar, until the toothless end of the broach side surface is attached to the outside of the turbine disk, then the main transmission motor drives the driving helical gear to rotate, the driving helical gear drives the rack shell, the slide bar and the broach to slide in the guide rail shell, the side surface of the broach contacts the outside of the turbine disk to realize the broaching, so as to conveniently cut the purpose of the outer surface of the turbine disk.

The utility model discloses a blowing cleaning structure for a broaching machine, and belongs to the field of broaching machine cleaning. Comprising a broaching machine, a broaching tool, a connecting pipe, an air blowing piece and a pump body piece. A guide groove for placing the broach and a placing area for placing a workpiece are formed in the broaching machine; the broach forms cutting parts for cutting a workpiece, and a groove is formed between the two cutting parts; the blowing part is used for blowing and cleaning the guide groove and the groove; the pump body part is connected with the air blowing part through the connecting pipe, and the pump body part is used for enabling air to pass through the connecting pipe and be discharged from the air blowing part. The broaching machine has the beneficial effects that the air blowing part can clean the broaching tool groove and the guide groove, chippings are prevented from influencing placement of the broaching tool and fixing of the broaching machine to the broaching tool, the chippings are prevented from scratching a workpiece, the time for cleaning the chippings by the air blowing part is short, and the machining efficiency of the workpiece can be improved.

An automatic groove broaching device for tool pliers comprises tooth groove cutting dies which are linearly and fixedly arranged, the tooth groove cutting dies comprise a fixed tooth cutting die, a single variable cutting die and a double variable cutting die, the single variable cutting die is arranged at the lower end of the fixed tooth cutting die, the double variable cutting die is arranged at the lower end of the single variable cutting die, and the shape of the cross section of the fixed tooth cutting die is kept constant; the height of the cross section of the single variable cutting die is constant, the width of the cross section is gradually reduced in the length direction, the height and the width of the cross section of the double variable cutting die are gradually reduced in the length direction, and oil nozzles are arranged in the tooth groove cutting die at intervals. The cross section of the tooth groove cutting die is designed to be gradually changed, cutting resistance can be reduced and cutting scrap iron can be reduced by gradually increasing the feeding amount when a jaw is cut through groove broaching, and the oil spray nozzle can coat lubricating oil on the tooth face of the jaw in the groove broaching operation process, improve groove broaching smoothness and solve the problems that the tooth face is rough, passivated and the like.

The invention relates to the technical field of broaching machines, and discloses a double-lead-screw small broaching machine which comprises a machine tool base, a control cabinet and a machine frame, a broach pushing seat is further installed in the machine frame, the control cabinet and the machine frame are both fixedly installed on the machine tool base, and the interior of the machine frame is composed of a reinforcing structure; a broaching tool clamping set is installed at the bottom of the machine frame, two symmetrically-arranged lead screws are further rotationally installed in the machine frame, broaching bases are movably installed on the lead screws, and the operation track of the broaching bases is from bottom to top. According to the broaching machine, the cutting process is completed by moving the workpiece, and compared with an existing broaching machine moving broaching tool, the operation distance of the broaching machine is greatly shortened (due to the fact that the broaching tool has the length when moving, the length of the broaching tool needs to be added to the moving stroke of the broaching tool), at the moment, the overall height of the broaching machine can be greatly reduced, and therefore the occupied space of the broaching machine is saved.

The application relates to the field of metal cutting, in particular to a broaching machine and a broaching method thereof. The broaching machine comprises outer surface broaches, the outer surface broaches are provided with a plurality of outer surface broaching teeth, the right part of the lower side of the outer surface broach is uniformly provided with a plurality of broaching teeth, the heights of the plurality of broaching teeth increase from left to right in sequence, the left part of the outer surface broach is provided with a plug hole, the plurality of outer surface broaches are arranged in front and back sticking mode, and a plug rod simultaneously penetrates through the plurality of plug holes. The broaching machine further comprises a door-shaped piece, the door-shaped piece is provided with a limiting groove, the left end of the plurality of outer surface broaches is inserted into the limiting groove, the front and back two ends of the plug rod are respectively inserted into the front and back two sides of the door-shaped piece, and the front and back two ends of the plug rod are all screw-connected with blocking heads. The width of the broach can be adjusted.

The numerical control broaching machine tailstock positioning mechanism comprises a tailstock body, a positioning and mounting structure and a moving guide rail, locking plates are arranged on the two sides of a positioning table of the moving guide rail, a moving assembly matched with an auxiliary groove and a positioning plate are arranged at the bottom of the tailstock body, and the positioning and mounting structure is mounted on a tailstock side plate; dual fixation of preliminary positioning and deep locking is adopted, a positioning column with a positioning block is screwed into a positioning groove of a positioning plate, and preliminary limiting is achieved through resilience force of a spring; a locking column is pressed and rotated, so that a locking block is embedded into a locking groove of a locking plate, a compression spring is deeply locked through resilience force, transverse and longitudinal displacement of the tailstock can be limited, and machining precision is guaranteed; moving wheels of a moving assembly slide on the arc-shaped inner wall of an auxiliary groove, a roller assembly on the top of a locking plate makes contact with the bottom of the tailstock, the moving resistance is greatly reduced through the double rolling friction design, and operation convenience is improved. The limiting ring and the baffle prevent components from falling off, the spring buffers collision and reduces abrasion, and the service life of the mechanism is prolonged.

The protective cover for the bearing bush broaching machine comprises a protective cover body, the protective cover body comprises a frame, a first door frame and a second door frame are arranged on the frame, a vertical hinged door is arranged on the first door frame in a hinged mode, and a sliding door is arranged on the second door frame in a sliding mode. The frame is further provided with a feeding window and a discharging window, the feeding window is used for arranging a feeding conveying belt in a penetrating mode, and the discharging window is used for arranging a discharging conveying belt in a penetrating mode. And the safety interlocking structure comprises magnetic sensors and magnetic triggers, the magnetic sensors are arranged on each first door frame and each second door frame, and the magnetic triggers are arranged on each side hung door and each sliding door. The bearing bush broaching machine solves the problems that in the prior art, a bearing bush broaching machine does not have protection measures in the machining process, safety risks are easily caused to workers, and machined scrap iron splashes everywhere.

The utility model discloses a simple tool for improving the machining location degree of a broaching machine, which comprises an upper pull-up broaching machine loading disc, an upper pull-up broaching machine sliding copper disc and a lower pull-up broaching machine loading disc which are sequentially arranged from top to bottom, the middle parts of the pull-up broaching machine upper loading disc, the pull-up broaching machine sliding copper disc and the pull-up broaching machine lower loading disc are matched for moving and limiting through flat key pins, and a stainless steel sleeve is arranged outside the middle connecting part; and three limiting blocks are arranged at the top of the upper loading disc of the pull-up broaching machine. The device is simple in structure and convenient to use; through combined use and cooperation of the three carrying discs and the three limiting blocks, it is guaranteed that a machined workpiece is fixed to the centers of the carrying discs, the machining position is guaranteed by moving the carrying discs, and the machining position degree of the broaching machine is improved.

The invention relates to the technical field of rotating shaft production, in particular to broach forming type rotating shaft production equipment which comprises a base, a guide groove is formed in the middle of the rear end of the upper surface of the base in a penetrating mode, a guide screw is movably installed in the middle of the front end of the inner surface of the guide groove through a bearing, and the other end of the guide screw penetrates through the middle of the rear end of the guide groove and extends outwards. A first motor is fixedly installed at the rear end of the base, the output end of the first motor is fixedly connected with the end, extending outwards, of the guide screw rod, the outer surface of the guide screw rod is spirally sleeved with a workbench, fixing frames are fixedly installed in the middles of the two ends of the upper surface of the workbench, and adjusting screw rods are spirally installed in the middles of the upper surfaces of the fixing frames in a penetrating and inserting mode; locking rings are movably installed at the output ends of the adjusting screw rods through bearings, and a rotating shaft body is jointly clamped and fixedly installed on the inner surfaces of the locking rings. The manufacturing difficulty and cost of the broach needed for machining the rotating shaft are reduced, and meanwhile the precision of forming and hole cutting of the rotating shaft through the broach is improved.

The utility model belongs to the technical field of refrigerator handle tube machining, and discloses a refrigerator handle tube straight grain garland device which comprises a workbench, a hydraulic cylinder is installed on the top of the workbench, a piston rod of the hydraulic cylinder is connected with a movable seat, an ejector rod is installed on the side, away from the hydraulic cylinder, of the movable seat, and a fixed seat is fixed to the top of the workbench. The position of the fixed seat corresponds to the position of the movable seat, a straight-line garland mold is installed on the fixed seat, the position of the straight-line garland mold corresponds to the position of the ejector rod, guide holes are symmetrically formed in the movable seat, guide rods are arranged in the guide holes, the ends of the guide rods are fixedly connected with the fixed seat, and the fixed seat is fixedly connected with the straight-line garland mold. The hydraulic cylinder is used for pushing the short pipe to penetrate through the straight-line garland die, straight-line garland can be conducted on the short pipe, large equipment and sites are not needed, end breaking and tail breaking are not needed, and waste of raw materials is avoided.

The utility model relates to the technical field of ship bearing bush machining, and particularly discloses a ship bearing bush counterpart plane broaching device which comprises a base, a supporting frame installed on the upper end face of the base, a telescopic assembly arranged at the upper end of the supporting frame and used for conducting telescopic pressing on a workpiece, a shell fixedly installed on the base, and a sliding groove opening formed in the upper end of the shell. A fixing seat is arranged on the upper end face of the shell, an inner ejector block is installed at the upper end of the fixing seat, a friction block is arranged on the surface of the inner ejector block, a driving assembly for providing power drive is arranged at the lower end of the shell, a sliding assembly is arranged on the driving assembly, and a meshing assembly is installed at the upper position in the shell. The driving assembly is arranged to provide power to drive the sliding assembly to move so as to drive the meshing assembly to realize bidirectional reciprocating motion, so that the counterpart plane of the workpiece is subjected to bidirectional reciprocating broaching after the workpiece is fixed, and the broaching stability is improved through the bidirectional acting force of the meshing assembly; the problem that the precision of a workpiece is affected due to the fact that the workpiece is prone to displacement in the broaching process is solved.

To suppress adhesion of a coolant to a workpiece and scattering of the coolant in a process machine, and reduce cost for the coolant while facilitating cleaning work.SOLUTION: A broach machine 100 for cutting the inner surface 104a of a workpiece 104 by a broach cutter 102 having multiple cutting edges 102a in the outer periphery comprises: a reference metal 110 on which the workpiece 104 is placed and into which the broach cutter 102 is inserted; a funnel 120 which is placed on the workpiece 104 placed on the reference metal 110 and which stores a coolant 10; and a lift device 130 that lifts the funnel 120 with respect to the workpiece 104. The funnel 120 opens at an upper part and is disposed coaxially with the workpiece 104. The broach cutter 102 simultaneously penetrates the workpiece 104, the funnel 120, and the reference metal 110, and machines the inner surface of the workpiece.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of machining equipment, and particularly relates to a broaching machine which comprises a machine body, a hydraulic cylinder is arranged at the tail end of the machine body, a tool rest groove is formed in the machine body, and a limiting hole and a workpiece mounting opening are formed in the front end of the machine body. The main tool rest is movably arranged in the tool rest groove and is driven by a hydraulic cylinder to move in the front-back direction of the lathe body; the guide rods are arranged in the tool rest groove, the two guide rods are symmetrically distributed in the left-right direction of the lathe body, and the guide rods are used for limiting the moving direction of the main tool rest; the broach is pulled by the main tool rest to cut the workpiece; the auxiliary mechanism is arranged on the front side of the lathe body and comprises a bracket used for supporting the broach during the return stroke of the broach; the damping mechanism is arranged on the bed body and located in the middle of the bed body in the front-back direction, and the damping mechanism comprises a guide roller with lifting damping in the vertical direction. Compared with the prior art, the working efficiency and the workpiece cutting quality are improved.

The application discloses a hydraulic pipe joint thread machining equipment with improved sealing, and relates to the technical field of thread machining equipment.The hydraulic pipe joint thread machining equipment comprises a machining platform, a lifting gantry is fixedly installed on the top of the machining platform, a rotating arm is fixedly installed on the top of the lifting gantry, the rotating end of the rotating arm faces downward and is fixedly installed with a jaw drive, the bottom of the two driving ends of the jaw drive is fixedly installed with clamping ends, and the bottom of the clamping ends is fixedly installed with clamping semicircular jaws.The tapping mechanism and the key groove opening mechanism are arranged to be matched with each other, the continuous machining of internal threads and key grooves is completed, the pipe to be machined is stably positioned through meshing, the machining precision of the key groove is ensured, the internal threads of other non-machining areas are protected due to the fact that other internal thread areas are blocked by machine taps, the internal threads are prevented from being damaged during the machining of the key groove, and the machining precision of the internal threads is ensured.

The invention discloses a precise broaching forming switching device and method for a complex mortise molded surface of an aviation high-pressure thin-wall disc. The device comprises a disc-shaped adapter, one end of the disc-shaped adapter is provided with a round groove connected with a broaching clamp, the other end of the disc-shaped adapter is provided with a round boss connected with a rotary table of broaching equipment, threaded connection holes and key grooves are evenly distributed in the outer circumferences of the two ends of the disc-shaped adapter, and positioning blocks are fixed through bolt holes in the key grooves to prevent circumferential rotation. The diameter of the adapter is designed to be Dz = (0.7-0.9) Df1, Df1 is the distance from the bottom of the mortise to the center of the wheel disc, a cutter is effectively avoided, and the rigidity requirement is met. The method comprises the following steps: polishing a mounting surface, mounting step by step, strictly controlling the jerk values (less than or equal to 0.005 mm and less than or equal to 0.01 mm respectively) of an adapter and a clamp, broaching at different speeds (rough broaching at 0.8-1.0 m / min and finish broaching at 0.25-0.6 m / min), and controlling the indexing angular acceleration (0-0.8 r / min) of a rotary table. The problem of adaptation of the rotary table and an existing clamp is solved, redesign of the clamp is avoided, the cost is remarkably reduced, and the machining precision is guaranteed.

The application discloses a workpiece positioning mechanism of broach machining machine tool, which comprises a mounting seat and a rotating ring, a stepped hole for placing a workpiece is formed in the mounting seat, and no less than three groups of clamping mechanisms are arranged in the mounting seat and arranged in a circumferential array along the axis of the stepped hole; the clamping mechanism comprises a clamping rod and a supporting rod; a corresponding number of first mounting grooves corresponding to the clamping mechanisms are formed around the periphery of the stepped hole on the mounting seat; the clamping rod is hingedly connected in the first mounting groove; the supporting rod is hingedly connected to the upper end surface of the rotating ring; and the end of the supporting rod away from the rotating ring is hingedly connected to the clamping rod. The rotating ring is driven to rotate around the stepped hole, so that the end portions of the plurality of clamping rods are synchronous to clamp the outer wall of the workpiece, thereby clamping and positioning the workpiece, and the axis of the workpiece remains consistent during each clamping; the workpiece is convenient to take, and the clamping rod is folded into the first mounting groove, so that the clamping rod does not hinder the placement of the workpiece, and the workpiece is convenient to place.

The utility model relates to the technical field of mortise broaching machines, and provides an automatic broaching tool assembly feeding and discharging device which comprises a rack, a broaching tool magazine and a guide rail truss, the broaching tool magazine and the guide rail truss are arranged on the rack, a broaching tool storage station used for storing a broaching tool assembly is arranged on the broaching tool magazine, and a broaching tool feeding and discharging execution station is arranged on one side of the end of the guide rail truss; the upper and lower cutter executing mechanism is arranged on the moving driving mechanism in a lifting manner and can rotate around the vertical axis, and the moving driving mechanism is movably mounted on the guide rail truss; the driving mechanism can move on the guide rail truss so as to drive the upper and lower cutter execution mechanism to the broach storage station and the upper and lower cutter execution station; the broach assembly stored on the broach storage station can be extracted and fixed through the broach up-and-down executing mechanism, after the broach assembly is moved to the broach up-and-down executing station through the moving driving mechanism, broach up-and-down operation is conducted on the broach assembly, and the device improves the convenience and efficiency of broach up-and-down.

The broaching machine labor-saving mechanism comprises a bottom plate, a main shaft is installed on the bottom plate through a shaft seat, a rotating component is connected to the main shaft in a sleeved mode, heightening blocks are fixedly connected to the positions, on the two sides of the main shaft, of the bottom plate, and column components with external threads are connected to the heightening blocks in a threaded mode through screw holes with internal threads. When the height of the column component is smaller than that of the rotating component, the labor-saving mechanism is in a movable state, and when the height of the column component is larger than that of the rotating component, the labor-saving mechanism is in a fixed state. By means of the labor-saving mechanism, rolling friction exists between the impeller and the broaching machine, friction force is obviously reduced, and therefore labor is saved during positioning operation between the impeller and a broaching machine tool bit, and labor burden and safety risks of workers are relieved. The device is simple in structure and convenient to mount and dismount.

The utility model provides a kind of turnover type scrap brushing device for broaching machine, it is related to broaching machine machining technical field, the turnover type scrap brushing device for broaching machine includes: driving device, connecting rod, pivot, scrap brushing mounting plate and scrap brushing assembly, the driving device is symmetrically arranged on the main slide of broaching machine, and its other end is rotatably connected with the one end of connecting rod, the other end of connecting rod is connected with pivot end, the middle part of pivot is connected with one end of scrap brushing mounting plate, scrap brushing mounting plate is equipped with scrap brushing assembly, when the movable end of driving device is extended to position, the center of the axle hole of scrap brushing assembly is aligned with the center of broach hole on main slide.This turnover type scrap brushing device for broaching machine, significantly reduce the space occupancy of scrap brushing assembly, its structure is simpler, more convenient to operate, and it is convenient for broach to be loaded and taken;In addition, scrap is brushed when main slide retreats, and broach will not cut off bristle, to increase the service life of bristle and broach broach.

The utility model provides a chip collecting box of a broach and a notch broaching machine. The chip collecting box of the broach comprises a filter screen, a first box body, a plurality of second box bodies and a plurality of installation frames. The first box body is provided with an inner cavity, and a via hole for a broach to penetrate through is formed in the inner cavity. The second box bodies are attached to one another to be installed in the inner cavity and detachably connected with the first box body. The plurality of mounting frames are arranged on the plurality of second box bodies in a one-to-one correspondence manner, each mounting frame comprises an opening part and a plurality of mounting parts, the opening parts are used for exposing the second box bodies, and the plurality of mounting parts are arranged around the opening parts at intervals and are used for mounting the filter screens so as to filter lubricating oil containing metal filings. The scrap collecting box solves the technical problems of mixed pollution and inconvenience in operation of a traditional scrap collecting box.

An automated grooving device for a tool pliers includes linearly fixedly arranged grooving dies. The grooving dies include a fixed-tooth die, a single-variable die, and a double-variable die. The single-variable die is located below the fixed-tooth die, and the double-variable die is located below the single-variable die. The cross-sectional shape of the fixed-tooth die remains constant. The cross-sectional height of the single-variable die is constant, but its cross-sectional width gradually narrows along its length. Both the height and width of the double-variable die gradually narrow along its length. Oil nozzles are spaced apart in the middle of the grooving dies. In this invention, the cross-section of the grooving dies is designed with a gradual change. By gradually increasing the feed rate during grooving and cutting the jaws, cutting resistance and cutting chips are reduced. The oil nozzles apply lubricating oil to the jaw teeth during the grooving process, improving the smoothness of grooving and reducing problems such as tooth surface roughness and dulling.

The utility model relates to a kind of lower pull vertical broaching machine lower chuck grab cutter detection mechanism, belong to numerical control lower pull vertical internal broaching machine technical field, including workbench, backing plate, lower slide, broach and lower chuck, the lower surface of the workbench is fixedly connected with sleeve compression block, the upper portion of the lower chuck is provided with grab cutter assembly, the grab cutter assembly includes sleeve, which is sleeved on the upper portion of lower chuck, the upper end surface of the sleeve is fixedly connected with multiple top rods, the lower end surface of the sleeve is fixedly connected with spring protection cover by backing plate.The lower pull vertical broaching machine lower chuck grab cutter detection mechanism, by integrating mechanical clamping mechanism and electronic detection system, the real-time monitoring of broach clamping state is realized, effectively prevent the tool damage accident caused by clamping failure, the sealing design of sensor protection cover ensures the reliability of detection system under harsh working conditions, and multi-stage limiting mechanism provides overload protection function, significantly improves the safety and service life of equipment.

The application discloses a system for preventing repeated broaching, and the technical scheme is that a hydraulic control unit is connected to an oil cylinder for driving a broaching tool to move back and forth, the hydraulic control unit comprises a hydraulic control station, an electromagnetic valve group, a first oil pipe and a pressure detection module connected to the first oil pipe and used for detecting oil pressure during retraction of a piston rod of the oil cylinder; the pressure detection module comprises a pressure sensor connected to the first oil pipe and used for detecting a real-time oil pressure value, a pressure analysis unit and an alarm device, the pressure analysis unit is preset with an alarm threshold value, the pressure analysis unit compares the real-time oil pressure value with the alarm threshold value, and when the real-time pressure value is lower than the alarm threshold value, the pressure analysis unit controls the alarm device to send an alarm signal; through oil pressure detection of the first oil pipe and comparison with the threshold value, if the pressure in the first oil pipe is greater than the threshold value, the broaching action is normal; if the pressure in the first oil pipe is less than the threshold value, an alarm is sent to remind that the product is a defective product.

The application discloses a square hole gear shifting finger machining process and relates to the technical field of machining. The square hole gear shifting finger machining process comprises the following steps: a first machining device processes a first end of a gear shifting finger blank body to a reference surface; the first machining device processes the gear shifting finger blank body to a first through hole; the first machining device processes a shifting head to a gear shifting shifting head; a driving assembly drives a broach to move and processes four chamfers of the first through hole; the driving assembly drives the broach to move and processes four inner wall surfaces of the first through hole; the broach comprises a clamping section, a chamfer processing tooth section and an inner wall processing tooth section which are sequentially arranged along the axial direction of the broach and are connected; the clamping section is used for being clamped by the driving assembly; the broach further comprises a calibration tooth section which is connected with the inner wall processing tooth section and is located on the side of the inner wall processing tooth section which is away from the chamfer processing tooth section; and the first through hole is processed into a square hole, i.e., a second through hole, by using the above broach.