A vertical pull-up external broaching machine

Abstract

The invention discloses a vertical pull-up external broaching machine, which relates to the technical field of mechanical processing. The key points of the technical solution are: it comprises a bed base and a bed column, the bed column is vertically arranged on the bed base, a tool is fixed on the bed column, the tool is arranged in a vertical direction, and a workbench is connected to the bed column; a tool fixture for clamping a flange is arranged on the workbench, and a fixing device for fixing the flange is arranged on the tool fixture; a supporting device for providing a vertical upward supporting force to the flange is arranged on the tool fixture; and it also comprises a driving device capable of moving the workbench in a vertical direction, and the driving device drives the workbench to move in a vertical direction so that the processing surface of the flange can contact the tool. The vertical pull-up external broaching machine can effectively reduce the influence of external force on the flange during flange processing, and the force on the flange is stable, so that the processing accuracy is higher.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a vertical pull-up external broaching machine. Background Art

[0002] At present, all vertical internal broaching machines are hydraulically driven. Hydraulic broaching machines are driven by hydraulic power. Among them, the hydraulic system is a complex electromechanical and hydraulic integrated system. Under normal conditions, each subsystem realizes the system function by its own work and mutual coordination. Due to the complexity of the system structure and working principle, once the system fails, it is often difficult to quickly and accurately determine the source of the system failure. In particular, the hydraulic vibration problem has always been a long-term difficult problem to solve in broaching machine products. In the process of solving the problem, technicians usually use empirical methods and layer-by-layer elimination methods for analysis, resulting in slow diagnosis and low efficiency. In addition, the broaching machine driven by the hydraulic system has a slow processing speed, low production efficiency, and is not environmentally friendly during the processing process. It occupies a large area. In addition, since the tool head and the parts to be processed on the broaching machine are often huge in size, if the workpiece clamping is not stable enough due to external influences during the processing, it will affect the processing accuracy of the workpiece, and the workpiece processing accuracy may not be enough and cannot meet the standard. Summary of the invention

[0003] In view of the shortcomings of the prior art, the object of the present invention is to provide a vertical pull-up external broaching machine, which has the advantage of high processing precision.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: a vertical pull-up external pulling machine, comprising a bed base and a bed column, the bed column being vertically arranged on the bed base, a tool being fixed on the bed column, the tool being arranged in a vertical direction, and a workbench being connected to the bed column; a tool fixture for clamping a flange is arranged on the workbench, a fixing device for fixing the flange is arranged on the tool fixture; a supporting device for providing a vertical upward supporting force to the flange is arranged on the tool fixture; the vertical pull-up external pulling machine also includes a driving device capable of moving the workbench in a vertical direction, and the driving device drives the workbench to move in a vertical direction so that the processing surface of the flange can contact the tool.

[0005] Through the above technical scheme, the tool is vertically fixed on the bed column, the fixing device on the fixture fixes the flange, and then the workbench is driven to move in the vertical direction through the driving device. At this time, the processing surface of the flange will contact the tool, thereby realizing the processing of the flange by the tool. In the process of the workbench vertically upward processing of the flange, the tool will apply a vertical downward force to the flange, and the supporting device on the fixture will apply a vertical upward supporting force to the flange to prevent the flange from being clamped unstably under the vertical downward force applied by the tool. On the one hand, by fixing the tool and moving the flange in the vertical direction to realize processing, the deviation that may occur during relative movement can be effectively reduced. On the other hand, the direction of gravity of the flange is the same as the direction of the force it is subjected to during processing, which ensures that the flange is less affected by external forces during processing and effectively improves the stability of flange clamping. The combination of the two can greatly improve the processing accuracy of the flange.

[0006] Preferably, the fixture comprises a rotating shaft, a mounting plate, and a sleeve body, wherein the rotating shaft is rotatably disposed in the sleeve body, the mounting plate is coaxially fixed to one end of the rotating shaft, and the flange is coaxially fixed to the mounting plate.

[0007] Through the above technical solution, the rotating shaft is installed in the sleeve and can rotate, the flange, the mounting plate and the rotating shaft are coaxially fixed, and the flange and the mounting plate can also rotate driven by the rotating shaft.

[0008] Preferably, the fixing device comprises a clamping member for axially fixing the flange and an internal expansion clamp for radially fixing the flange.

[0009] Through the above technical solution, the clamping piece can fix the flange axially, and the internal expansion clamp can fix the flange radially, so that the flange is more stable during processing and the processing accuracy is prevented from being affected by insufficient clamping.

[0010] Preferably, the flange includes a tube body and a disk body, and the disk body is arranged on the outer side surface of one end of the tube body; the clamping member includes a chuck and a cylinder, and one end of the chuck is hinged to the output shaft of the cylinder; connecting blocks are pivotally connected on both sides of the chuck, and a connecting protrusion is arranged on the end face of the cylinder, and the connecting block is pivotally connected to the connecting protrusion, and the other end of the chuck can be pressed against the end face of the disk body.

[0011] Through the above technical solution, when the flange needs to be processed, the output shaft of the cylinder moves upward, pushing the chuck to move upward. At this time, the other end of the chuck is pressed downward against the upper end surface of the disk body, and the flange can be firmly fixed on the end surface of the mounting disk; when the flange needs to be disassembled, the output shaft of the cylinder moves downward, driving the chuck to move downward. At this time, the other end of the chuck is lifted upward away from the upper end surface of the disk body, and the operator can now remove the flange for replacement.

[0012] Preferably, the internal expansion clamp includes an internal expansion rod and an internal expansion core, one end of the internal expansion rod passes through the internal expansion core and is slidably connected to the internal expansion core, the internal expansion rod passes through one end of the internal expansion core and extends to form a protrusion 1, and a clamping ring is sleeved on the internal expansion core, the outer wall of the clamping ring can abut against the inner wall of the tube body, the end face of the protrusion 1 abuts against the end face of the clamping ring, and the internal expansion rod can drive the clamping ring away from the disk body, so that the outer wall of the clamping ring abuts against the inner wall of the tube body, and the inner wall of the clamping ring abuts against the outer wall of the internal expansion core.

[0013] Through the above technical scheme, since the end face of the protrusion one abuts against the end face of the clamping ring, the inner expansion rod can drive the clamping ring to move away from the disk body. When the inner expansion rod drives the clamping ring to move away from the disk body, the outer wall of the clamping ring abuts against the inner wall of the tube body, and the inner wall of the clamping ring abuts against the outer wall of the inner expansion core. The inner expansion core, the clamping ring and the tube body are squeezed against each other. At the same time, the outer wall of the disk body abuts against the mounting disk. At this time, the mutual force generated between them can keep the flange fixed.

[0014] Preferably, the supporting device includes a supporting member, a supporting bevel block, and a supporting body, the supporting body is provided with a slideway one and a slideway two, the supporting member is slidingly connected to the slideway one, the supporting bevel block is slidingly connected to the slideway two, a working inclined surface is provided on the supporting bevel block, one end of the supporting member can abut against the outer peripheral wall of the disk body, and the end of the supporting member away from the disk body is slidingly matched with the working inclined surface.

[0015] Through the above technical solution, the support member moves along the slideway one, and the slideway one can prevent the support member from moving toward both sides, so that the support member can only move along the direction of the slideway one, so that one end of the support member is close to or away from the disk body, and the end of the support member away from the disk body can move along the working inclined surface, and the support inclined block can move along the slideway two; when it is necessary to process the flange, the support member is slid along the working inclined surface to the higher side, so that the support member is close to the disk body along the slideway one until it abuts against the outer peripheral wall of the disk body; when it is necessary to remove the flange, the support member is slid along the working inclined surface to the lower side, so that the support member is away from the disk body along the slideway one.

[0016] Preferably, cylinder 2 and cylinder 3 are respectively provided on both sides of the supporting body, one end of the supporting inclined block is fixedly connected to a pressure rod, the working inclined surface is closer to one end of the pressure rod than the other end, the other end of the supporting inclined block can be abutted against the output end of cylinder 2, and the end of the pressure rod away from the supporting inclined block can be abutted against the output end of cylinder 3.

[0017] Through the above technical solution, the pressure rod passes through the pull block and can move along the through hole. One end of the spring abuts against the pull block, and the other end of the spring abuts against the protrusion two. When the output end of the cylinder three pushes the pressure rod to move, the spring is squeezed between the pull block and the protrusion two. When the force applied to the pressure rod by the cylinder three disappears, the spring returns to its original state and can make the pressure rod move toward the direction of the cylinder three to reset it.

[0018] Preferably, a pulling block is provided on one side of the supporting body, the pressure rod passes through the pulling block to form a through hole, the through hole is gap-matched with the pressure rod, the pulling block can abut against the supporting inclined block, and the pressure rod extends from one end close to the oil cylinder three to form a protrusion two; a spring is provided on the pressure rod, the spring is sleeved on the pressure rod, one end of the spring abuts against the pulling block, and the other end of the spring abuts against the protrusion two.

[0019] Through the above technical solution, the pressure rod passes through the pull block and can move along the through hole. One end of the spring abuts against the pull block, and the other end of the spring abuts against the protrusion two. When the output end of the cylinder three pushes the pressure rod to move, the spring is squeezed between the pull block and the protrusion two. When the force applied to the pressure rod by the cylinder three disappears, the spring returns to its original state and can make the pressure rod move toward the direction of the cylinder three to reset it.

[0020] Preferably, the sleeve body is provided with a motion channel, a rack is slidably connected in the motion channel, a cylinder four is arranged outside the sleeve body, the output end of the cylinder four is fixedly connected to the rack, a gear is coaxially fixed on the rotating shaft, and the gear is meshed with the rack.

[0021] Through the above technical solution, the output end of the oil cylinder four drives the rack to move along its own axial direction, and at the same time the rack drives the gear to rotate circumferentially. The gear is fixedly connected to the rotating shaft. The circumferential rotation of the gear drives the circumferential rotation of the rotating shaft. The circumferential rotation of the rotating shaft drives the flange to rotate circumferentially. At this time, the flange changes the processing position of its corresponding tool through circumferential rotation, and secondary processing at different positions can be performed without disassembling the flange and reinstalling it.

[0022] Preferably, a limit block 1 is coaxially arranged on the rotating shaft, the end face of the limit block 1 is in contact with the end face of the sleeve, and the end face of the sleeve is provided with a stop block 1 and a stop block 2, and the stop block 1 and the stop block 2 can limit the limit block circumferentially.

[0023] Through the above technical solution, the circumferential rotation of the rotating shaft drives the limit block to rotate circumferentially, and the circumferential rotation angle of the limit block is limited by stop block 1 and stop block 2, thereby limiting the circumferential rotation angle of the rotating shaft, and finally achieving the limitation of the circumferential rotation angle of the flange, which makes it more convenient to confirm the flange processing position.

[0024] Preferably, a bottom plate is provided below the sleeve, a base is provided below the bottom plate, at least two relatively arranged rotating brackets are provided at one end of the base away from the disc body, and the rotating brackets are rotatably connected to the bottom plate; an oil cylinder five is provided on the outer side of the sleeve, a lower link joint is provided on the base, a piston rod is connected to the output end of the oil cylinder five, the piston rod is rotatably connected to the lower link joint, a cylinder head is provided at the output end of the oil cylinder five, and the cylinder head is rotatably connected to the bottom plate.

[0025] Through the above technical scheme, the base plate is rotatably connected to two relatively arranged rotating brackets, and the base plate can rotate around the connection between the base plate and the rotating bracket; the piston rod is rotatably connected to the lower link joint on the base, and the cylinder head and the base plate are rotatably coordinated, and the oil cylinder five can drive the base plate to rotate through the cylinder head and the piston rod.

[0026] Preferably, a channel is provided on the base, a support block is provided on the upper end surface of the base, a center hole is opened on the support block, the channel is connected with the center hole, the upper end surface of the support block abuts against the lower end surface of the bottom plate, and the bottom plate can close the center hole.

[0027] Through the above technical scheme, after the base plate is rotated, ventilation can be performed through a channel of the base. Since channel one is connected with center hole one, when the gas can be discharged outward from a center hole one, it can be determined that the base plate is not placed stably after rotation; when the gas is not discharged outward from a center hole one, it can be determined that the base plate is placed stably after rotation; after the tooling is placed stably, the flange is processed to prevent direct processing due to the horizontal surface of the tooling not being placed stably, which ultimately leads to insufficient precision of the flange after processing.

[0028] Preferably, the driving device comprises a motor, an output end of the motor is connected to a screw rod, a rolling nut is arranged on the workbench, the screw rod passes through the rolling nut and the two are rollingly connected.

[0029] Through the above technical solution, the output end of the motor rotates to drive the screw to rotate, and the screw and the rolling nut cooperate to drive the workbench to move in the vertical direction.

[0030] Preferably, a buffer device capable of applying a vertical upward supporting force to the workbench is provided on the bed base.

[0031] Through the above technical solution, a vertical upward supporting force can be applied to the workbench when it falls. Under the action of the supporting force, the workbench will not generate excessive gravity impact on the bed base when it falls, thereby preventing the pull-out bed from being damaged.

[0032] Preferably, the buffer device includes a first cylinder and a second cylinder, the first cylinder and the second cylinder are respectively arranged on both sides of the bed column, and the upper end surface of the workbench is provided with a first support frame and a second support frame, and the output end of the first cylinder and the output end of the second cylinder can respectively abut against the lower end surface of the first support frame and the lower end surface of the second support frame.

[0033] Through the above technical solution, when the workbench falls, the first cylinder and the second cylinder can respectively apply an upward supporting force to the first support frame and the second support frame, thereby greatly eliminating the impact force when the support platform falls. At the same time, supporting force is provided on both sides at the same time, so that the workbench can remain balanced and will not tilt due to uneven force.

[0034] Preferably, there are at least two cutting tools, and at least two fixtures are provided on the workbench, and the number of the fixtures corresponds to the same number of the cutting tools.

[0035] Through the above technical solution, multiple tooling fixtures are arranged on a workbench, and the tool and the tooling fixture are arranged one-to-one, so that multiple flanges can be processed simultaneously, thereby improving the processing efficiency.

[0036] Preferably, a plurality of slide rails are arranged on the bed column, the slide rails are arranged along the vertical direction, and a plurality of sliders are slidably connected to the slide rails, and the sliders are fixedly connected to the workbench.

[0037] Through the above technical solution, the slide rail can provide a smooth moving surface for the workbench, and at the same time provide a movement guide for the workbench, so that the workbench can move vertically along the slide rail, and at the same time transmit the force generated by the processing to the bed column, thereby reducing the impact on the workpiece, increasing the service life of the broaching machine frame, and improving the processing accuracy.

[0038] Preferably, a groove 1 is formed on the upper surface of the bed base, and a first inclined surface and a second inclined surface are formed on the upper surface of the bed base from both sides inward from high to low, and the first inclined surface and the second inclined surface both extend to a place in the groove.

[0039] Through the above technical solution, the processed debris falls to the upper surface of the bed base, and the operator can clean the debris by flushing or the like. At this time, the first inclined surface and the second inclined surface can provide movement guides for the debris or water flow, so that the debris enters the groove 1, which is very beneficial for cleaning the broaching machine.

[0040] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0041] 1. The flange is less affected by external forces during processing, the force is stable, and the processing accuracy is higher;

[0042] 2. Multiple ways to fix the flange make the flange more stable during processing and improve the processing accuracy of the flange;

[0043] 3. By flipping the fixture, the troubles caused by space problems during the processing are avoided;

[0044] 4. The flange can be rotated axially, and the operator does not need to disassemble and install the flange for the second time, so the flange can be processed for the second time at different positions;

[0045] 5. Limiting the circumferential rotation angle of the flange makes it easier for the operator to confirm the position during secondary processing of the flange, thereby improving overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of an embodiment;

[0047] Figure 2 It is a structural schematic diagram of the fixture of the embodiment;

[0048] Figure 3 It is a front view of an embodiment;

[0049] Figure 4 It is a schematic structural diagram of the flange of an embodiment;

[0050] Figure 5 A schematic diagram of the structure of a tool in an embodiment;

[0051] Figure 6 A schematic structural diagram of a pressing member of an embodiment;

[0052] Figure 7 is a cross-sectional view of a fixture of an embodiment;

[0053] Figure 8 An exploded view of a support device of an embodiment;

[0054] Fig. 9 A schematic structural diagram of the fixture of the embodiment from another angle;

[0055] Fig.10 A schematic diagram of the structure of the gear and rack of the embodiment;

[0056] Fig.11 is a cross-sectional view of a clamping ring of an embodiment;

[0057] Fig.12 is a cross-sectional view of the inner expansion core of the embodiment;

[0058] Fig.13 A schematic diagram of the structure between the bottom plate and the base of the embodiment;

[0059] Fig.14 A top view of a fixture of an embodiment;

[0060] Fig.15 It is a schematic structural diagram of the pulling block and the supporting inclined block of the embodiment.

[0061] Figure numerals: 1, bed base; 2, bed column; 3, tool; 4, fixture; 42, rotating shaft; 421, fixed block; 43, mounting plate; 44, sleeve; 441, movement channel; 5, fixing device; 51, clamping member; 511, chuck; 512, oil cylinder 1; 5121, connecting protrusion; 513, connecting block; 52, internal expansion fixture; 521, internal expansion rod; 5211, protrusion 1; 522, internal expansion core; 523, clamping ring; 5 231, inclined plane 1; 5232, inclined plane 2; 5233, inclined plane 3; 5234, inclined plane 4; 6, supporting device; 61, supporting member; 611, supporting top rod; 62, supporting inclined block; 621, working inclined plane; 63, supporting body; 631, slideway 1; 632, slideway 2; 7, driving device; 71, motor; 72, screw rod; 73, rolling nut; 8, flange; 81, tube body; 82, disc body; 9, oil cylinder 6; 91, transmission shaft; 1 0, workbench; 11, oil cylinder 2; 12, oil cylinder 3; 13, pressure rod; 131, bump 2; 14, pull block; 141, through hole; 142, groove 2; 15, spring; 16, rack; 17, oil cylinder 4; 18, gear; 181, fixed groove; 19, limit block 1; 20, stop block 1; 21, stop block 2; 22, bottom plate; 23, base; 24, rotating bracket; 25, oil cylinder 5; 26, lower link joint; 27, piston rod; 28, Cylinder head; 29, channel one; 30, support block one; 31, center hole one; 32, entrance one; 33, entrance two; 34, support block two; 35, buffer device; 351, first cylinder; 352, second cylinder; 353, first support frame; 354, second support frame; 36, slide rail; 37, slider; 38, groove one; 39, first inclined surface; 40, second inclined surface; 101, bearing seat one; 102, bearing seat two; 103, fixed cover plate;. DETAILED DESCRIPTION

[0062] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0063] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0064] A vertical pull-up external broaching machine, such as Figures 1 to 15 As shown, it includes a bed base 1 and a bed column 2, the bed column 2 is vertically arranged on the bed base 1, a tool 3 is fixed on the bed column 2, the number of the tools 3 is two, the tools 3 are arranged in the vertical direction, a workbench 10 is slidably connected to the bed column 2, the workbench 10 is provided with a fixture 4 for clamping a flange 8, two fixtures 4 are arranged on the workbench 10, the number of the fixtures 4 is the same as the number of the tools 3, and a fixing device 5 for fixing the flange 8 is arranged on the fixture 4; a supporting device 6 for providing a vertical upward supporting force to the flange 8 is arranged on the fixture 4; the vertical pull-up type external pulling machine also includes a driving device 7 that can move the workbench 10 in the vertical direction, and the driving device 7 drives the workbench 10 to move in the vertical direction so that the processing surface of the flange 8 can contact with the tool 3.

[0065] The flange 8 includes a tube body 81 and a disc body 82 . The disc body 82 is disposed around the outer side surface of one end of the tube body 81 .

[0066] The fixture 4 includes a rotating shaft 42, a mounting plate 43, a sleeve 44, a base plate 22, and a pedestal 23. The sleeve 44 is fixed to the upper end surface of the base plate 22, the base plate 22 is arranged on the upper end surface of the pedestal 23, the rotating shaft 42 is rotatably arranged in the sleeve 44, the mounting plate 43 is coaxially fixed to one end of the rotating shaft 42, and the flange 8 is coaxially fixed to the mounting plate 43.

[0067] The fixing device 5 includes a clamping piece 51 for axially fixing the flange 8 and an internal expansion clamp 52 for radially fixing the flange 8; the clamping piece 51 includes a chuck 511 and a cylinder 512, and the end of the chuck 511 away from the flange 8 is hinged to the output shaft of the cylinder 512; both sides of the chuck 511 are pivotally connected with connecting blocks 513, and a connecting protrusion 5121 is extended to be formed on the end surface of the cylinder 512, and the connecting block 513 is pivotally connected to the connecting protrusion 5121, and the other end of the chuck 511 can be pressed against the end surface of the disk body 82; preferably, the number of the clamping pieces 51 is three, and they are all pressed against the end surface of the disk body 82 without affecting the processing process of the tool 3; the clamping piece 51 can also be adopted by setting a bracket on the outside of the mounting plate 43, and the lateral side of the bracket is set above the flange 8, and a threaded hole is opened on the lateral side, and a bolt is threadedly connected to the threaded hole, and the bolt can be rotated to achieve one end of the bolt being pressed against the end surface of the disk body 82.

[0068] The inner expansion fixture 52 includes an inner expansion rod 521 and an inner expansion core 522. A placement groove is provided in the mounting plate 43. The inner expansion core 522 is placed in the placement groove. One end of the inner expansion rod 521 passes through the inner expansion core 522 and is slidably connected to the inner expansion core 522. One end of the inner expansion rod 521 passes through the inner expansion core 522 and is slidably connected to the inner expansion core 522. The inner expansion rod 521 passes through one end of the inner expansion core 522 and extends to form a protrusion 5211. The other end of the inner expansion rod 521 is threadedly connected to the transmission shaft 91. The other end of the transmission shaft 91 is threadedly connected to the oil cylinder 69. A clamping ring 523 is sleeved on the inner expansion core 522, and the clamping ring 523 has a certain elastic deformation function. The outer wall of the clamping ring 523 can be pressed against the inner wall of the tube body 81, the end face of the protrusion 1 5211 is pressed against the end face of the clamping ring 523, the inner wall of the clamping ring 523 is respectively provided with a slope 1 5231 and a slope 2 5232 near the two ends, the outer wall of the inner expansion core 522 is provided with a slope 3 5233 and a slope 4 5234, the inner expansion rod 521 can drive the clamping ring 523 away from the disk body 82, so that the outer wall of the clamping ring 523 is pressed against the inner wall of the tube body 81, and the inner wall of the clamping ring 523 is pressed against the outer wall of the inner expansion core 522, the slope 1 5231 is pressed against the slope 3 5233, and the slope 2 5232 is pressed against the slope 4 5234.

[0069] The support device 6 includes a support member 61 , a support inclined block 62 , and a support body 63 . Preferably, the support member 61 includes a support top rod 611 , and one end of the support top rod 611 close to the disk body 82 is arc-shaped and can abut against the outer peripheral wall of the disk body 82 .

[0070] The support body 63 is provided with a slideway 1 631 and a slideway 2 632, the support member 61 is slidably connected to the slideway 1 631, the support inclined block 62 is slidably connected to the slideway 2 632, two fixed cover plates 103 for covering the slideway 1 and the slideway 2 632 are fixed on the support body 63, a working inclined surface 621 is provided on the support inclined block 62, one end of the support member 61 can be abutted against the outer peripheral wall of the disk body 82, the end surface of the support push rod 611 away from the disk body 82 is inclined, and can be closely attached to and slidably matched with the working inclined surface 621, oil cylinder 2 11 and oil cylinder 3 12 are respectively provided on both sides of the support body 63, one end of the support inclined block 62 is fixedly connected to the pressure rod 13, the end of the working inclined surface 621 close to the pressure rod 13 is lower than the other end thereof, and the support body 63 is provided with a plurality of oil cylinders 11 and 12 respectively. The other end of the support oblique block 62 can be abutted against the output end of the oil cylinder 2 11, and the end of the pressure rod 13 away from the support oblique block 62 can be abutted against the output end of the oil cylinder 3 12; a pull block 14 is provided on one side of the support body 63, and a groove 2 142 is opened on the pull block 14, and the support oblique block 62 can be abutted against the inner wall of the groove 2 142, and the pressure rod 13 passes through the pull block 14 to form a through hole 141, and the through hole 141 and the pressure rod 13 are clearance-matched, and the pull block 14 can be abutted against the support oblique block 62, and the end of the pressure rod 13 close to the oil cylinder 3 12 extends to form a protrusion 2 131; a spring 15 is provided on the pressure rod 13, and the spring 15 is sleeved on the pressure rod 13, one end of the spring 15 abuts against the pull block 14, and the other end of the spring 15 abuts against the protrusion 2 131.

[0071] The sleeve 44 is provided with a motion channel 441, and a rack 16 is slidably connected in the motion channel 441. Preferably, two oil cylinders 417 are provided outside the sleeve 44, and the output ends of the two oil cylinders 417 are respectively fixedly connected to the two ends of the rack 16. A gear 18 is coaxially fixed on the rotating shaft 42, and a fixed block 421 is extended from the rotating shaft 42. A fixed groove 181 is provided on the gear 18, and the fixed block 421 is inserted into the fixed groove 181, and the gear 18 is meshed with the rack 16.

[0072] A limit block 19 is coaxially arranged on the rotating shaft 42, and the end face of the limit block 19 is in contact with the end face of the sleeve 44. The end face of the sleeve 44 is provided with a stop block 20 and a stop block 21. The stop block 20 and the stop block 21 can limit the circumferential position of the limit block 19. It should be noted that the circumferential angle formed by the stop block 20 and the stop block 21 should be the same as the angle of rotation required for the flange 8 processing, which is related to the actual processing requirements. The circumferential angle formed by the stop block 20 and the stop block 21 is greater than 0 degree and less than or equal to 90 degrees. Preferably, the circumferential angle formed by the stop block 20 and the stop block 21 is 70 degrees.

[0073] At least two oppositely arranged rotating brackets 24 are provided at one end of the base 23 away from the disc body 82, and the rotating brackets 24 are rotatably connected to the bottom plate 22; preferably, the rotating bracket 24 is hinged to the bottom plate 22, and the bottom plate 22 can rotate around the hinge point between itself and the rotating bracket 24, or a pivot connection can be adopted; an oil cylinder 5 25 is provided on the outer side of the sleeve 44, and a lower chain joint 26 is provided on the base 23. The output end of the oil cylinder 5 25 is connected to a piston rod 27, and the piston rod 27 is rotatably connected to the lower chain joint 26. A cylinder cover 28 is provided at the output end of the oil cylinder 5 25, and the cylinder cover 28 is rotatably connected to the bottom plate 22. Preferably, the cylinder cover 28 is hinged to the bottom plate 22, or a pivot connection can be adopted; preferably, the number of the oil cylinder 5 25 is two, which are respectively arranged on both sides of the sleeve 44, and the corresponding lower chain joint 26, piston rod 27, and cylinder cover 28 are all two, and are all arranged at corresponding positions on both sides of the sleeve 44.

[0074] A channel 29 is provided on the base 23, and an entrance 32 and an entrance 33 are formed on the side wall and the upper end surface of the base 23 respectively. A support block 30 is provided on the upper end surface of the base 23, and a center hole 31 is opened on the support block 30. The channel 29 is connected with the center hole 31. The upper end surface of the support block 30 abuts against the lower end surface of the bottom plate 22, and the bottom plate 22 can close the center hole 31; preferably, a support block 2 34 is provided on the lower end surface of the bottom plate 22, and the end surface of the support block 2 34 away from the bottom plate 22 abuts against the end surface of the support block 30 close to the bottom plate 22, and the support block 2 34 blocks the center hole 31.

[0075] The driving device 7 includes a motor 71, the output end of the motor 71 is connected to a screw rod 72, a rolling nut 73 is arranged on the workbench 10, the screw rod 72 passes through the rolling nut 73 and the two are rollingly connected, a bearing seat 101 and a bearing seat 2 102 are fixed on the bed column 2, and the two ends of the screw rod 72 are respectively connected to the bearing seat 101 and the bearing seat 2 102, and the bearing seat 101 and the bearing seat 2 102 can effectively improve the stability of the screw rod 72 and the workbench 10 during movement; an electric lifting platform can also be arranged under the tooling fixture 4, and the tooling fixture 4 can be driven to move in the vertical direction by lifting and lowering the electric lifting platform.

[0076] The bed base 1 is provided with a buffer device 35 capable of applying a vertical upward supporting force to the workbench 10. Preferably, the buffer device 35 includes a first cylinder 351 and a second cylinder 352. The first cylinder 351 and the second cylinder 352 are respectively arranged on both sides of the bed column 2. The upper end surface of the workbench 10 is provided with a first support frame 353 and a second support frame 354. The output end of the first cylinder 351 and the output end of the second cylinder 352 can respectively abut against the lower end surface of the first support frame 353 and the lower end surface of the second support frame 354. The buffer device 35 can also be adopted by providing a buffer layer on the lower surface of the workbench 10. The buffer layer can be made of elastic materials such as rubber. A plurality of gas springs are arranged below the buffer layer. Through the gas springs and the buffer layer, the impact force of the workbench 10 on the bed base 1 is weakened or eliminated.

[0077] Preferably, four slide rails 36 are provided on the bed column 2 , and the slide rails 36 are arranged along the vertical direction. Three sliders 37 are slidably connected to the slide rails 36 , and the sliders 37 are fixedly connected to the workbench 10 .

[0078] A groove 38 is formed on the upper surface of the bed base 1 . A first inclined surface 39 and a second inclined surface 40 are formed on the upper surface of the bed base 1 from both sides inward from high to low. Both the first inclined surface 39 and the second inclined surface 40 extend to the groove 38 .

[0079] Installation method of the internal expansion fixture 52:

[0080] First, place the inner expansion core 522 in the placement groove of the mounting plate 43, then put the clamping ring 523 on the inner expansion core 522, and then insert the inner expansion rod 521 into the inner expansion core 522, so that the end of the inner expansion rod 521 away from the protrusion passes through the inner expansion core 522 and is threadedly connected to the transmission shaft 91, and the end face of the protrusion 5211 is abutted against the end face of the clamping ring 523.

[0081] Disassembly method of the internal expansion fixture 52:

[0082] The inner expansion rod 521 can only form an abutment with the clamping ring 523 through the protrusion 5211 to drive the clamping ring 523 away from the disk body 82. The inner expansion rod 521 cannot drive the clamping ring 523 to approach the disk body 82. When disassembling, you can only remove the inner expansion rod 521 first, and then take out the clamping ring 523 by pulling the flange 8 outward.

[0083] The working mode of the clamping member 51 is as follows:

[0084] When the disk body 82 of the flange 8 is pressed, the output end of the oil cylinder 512 drives the chuck 511 to move axially, so that the end of the chuck 511 away from the disk body 82 is lifted up, and the other end of the chuck 511 is pressed downward against the upper end surface of the disk body 82; when the flange 8 needs to be disassembled, the output end of the oil cylinder 512 drives the chuck 511 to move axially, so that the end of the chuck 511 away from the disk body 82 is pressed down, and the other end of the chuck 511 is lifted up and away from the upper end surface of the disk body 82.

[0085] The working mode of the supporting device 6 is as follows:

[0086] When the support member 61 needs to be pressed against the outer peripheral wall of the disc body 82, the output end of the second cylinder 11 pushes the support inclined block 62 toward one end of the third cylinder 12 until the support member 61 is pressed against the outer peripheral wall of the disc body 82; when the flange 8 needs to be disassembled after the processing is completed, the output end of the third cylinder 12 pushes the support inclined block 62 toward one end of the second cylinder 11, so that the spring 15 is in a compressed state, and the end of the support frame close to the disc body 82 moves in a direction away from the disc body 82;

[0087] When the oil cylinder 2 11 applies a force to the supporting bevel block 62 or the oil cylinder 3 12 applies a force to the pressure rod 13, the spring 15 will eventually be in a compressed state. After the force provided by the oil cylinder 2 11 or the oil cylinder 3 12 is lost, the force generated by the elastic deformation of the spring 15 can make the supporting bevel block 62 return to its original proper position, and also make the supporting member 61 return to its original proper position, which can achieve a resetting effect.

[0088] Working mode of flange 8 circumferential rotation:

[0089] When the flange 8 needs to be rotated, the output end of the oil cylinder 17 drives the rack 16 to move axially, the rack 16 meshes with the gear 18, and the gear 18 rotates. The gear 18 and the rotating shaft 42 are fixedly connected through the fixing block 421 and the fixing groove 181. The rotation of the gear 18 drives the rotating shaft 42 to rotate, and the rotation of the rotating shaft 42 drives the flange 8 to rotate.

[0090] Method to check whether the tooling is placed stably after rotation:

[0091] First, the gas is poured into the inlet 1 32 of the side wall of the base 23, and the gas is discharged from the inlet 2 33, and then enters the center hole 1 31 from the inlet 2 33. Since the support block 2 34 blocks the center hole 1 31, check whether there is gas discharged from the abutment between the support block 1 30 and the support block 2 34. If gas is discharged, it means that the bottom plate 22 is not placed stably after rotation. If no gas is discharged, it means that the bottom plate 22 is placed on the same horizontal plane after rotation and is placed stably.

[0092] A processing method of a vertical pull-up external broaching machine:

[0093] First, the output end of the motor 71 rotates to drive the screw rod 72 to rotate, and the rolling nut 73 follows the rotation angle of the screw rod 72 to convert it into a linear motion, driving the worktable 10 to move upward in the vertical direction, driving the workpiece on the fixture 4 to contact the tool 3 on the bed column 2, and realizing the first processing of the workpiece by the tool 3; at this time, the bottom plate 22 is driven by the cylinder 5 25 to rotate 90 degrees upward around the hinge point between itself and the rotating bracket 24; then, the output end of the motor 71 is rotated to drive the screw rod 72 to rotate, driving the worktable 10 to move downward in the vertical direction; at this time, the bottom plate 22 is driven by the cylinder 5 25 to rotate around the hinge point between itself and the rotating bracket 24 Turn 90 degrees and return to its original position; then the output end of the oil cylinder four 17 drives the rack 16 to move axially, the rack 16 meshes with the gear 18, so that the gear 18 rotates, and the gear 18 and the rotating shaft 42 are fixedly connected with the fixed block 421 and the fixed groove 181. The rotation of the gear 18 drives the rotating shaft 42 to rotate, and the rotation of the rotating shaft 42 drives the flange 8 to rotate. At this time, the limit block 19 will abut against the stop block 1 20 or the stop block 21, so that the flange 8 rotates 70 degrees in the circumferential direction, and then the output end of the motor 71 is rotated to drive the screw rod 72 to rotate, and drive the workbench 10 to move upward in the vertical direction, so as to realize the second processing of the workpiece by the tool 3.

[0094] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A vertical pull-up type external pull-down bed, comprising a bed base (1) and a bed column (2), characterized in that: The bed column (2) is vertically arranged on the bed base (1), a tool (3) is fixed on the bed column (2), the tool (3) is arranged in a vertical direction, and a workbench (10) is connected to the bed column (2); The workbench (10) is provided with a fixture (4) for clamping the flange (8), and the fixture (4) is provided with a fixing device (5) for fixing the flange (8); The fixture (4) is provided with a supporting device (6) for providing a vertical upward supporting force to the flange (8); The fixture (4) comprises a rotating shaft (42), a mounting plate (43), and a sleeve (44); the rotating shaft (42) is rotatably disposed in the sleeve (44); the mounting plate (43) is coaxially fixed to one end of the rotating shaft (42); and the flange (8) is coaxially fixed to the mounting plate (43); The vertical pull-up external broaching machine further comprises a driving device (7) capable of moving the workbench (10) in a vertical direction, wherein the driving device (7) drives the workbench (10) to move in a vertical direction so that the machining surface of the flange (8) is in contact with the tool (3); A bottom plate (22) is arranged below the sleeve (44), a base (23) is arranged below the bottom plate (22), at least two rotating brackets (24) arranged opposite to each other are arranged at one end of the base (23) away from the disc (82), and the rotating brackets (24) are rotatably connected to the bottom plate (22); an oil cylinder (25) is arranged on the outer side of the sleeve (44), a lower chain joint (26) is arranged on the base (23), a piston rod (27) is connected to the output end of the oil cylinder (25), and the piston rod (27) is rotatably connected to the lower chain joint (26); a cylinder cover (28) is arranged at the output end of the oil cylinder (25), and the cylinder cover (28) is rotatably connected to the bottom plate (22); The base (23) is provided with a channel (29), the upper end surface of the base (23) is provided with a support block (30), the support block (30) is provided with a center hole (31) connected to the channel (29), the upper end surface of the support block (30) is in contact with the lower end surface of the bottom plate (22), and the bottom plate (22) is capable of closing the center hole (31).

2. A vertical pull-up external broaching machine according to claim 1, characterized in that: The fixing device (5) comprises a pressing piece (51) for axially fixing the flange (8) and an internal expansion clamp (52) for radially fixing the flange (8).

3. A vertical pull-up external broaching machine according to claim 2, characterized in that: The flange (8) includes a tube body (81) and a disk body (82), and the disk body (82) is arranged around the outer side surface of one end of the tube body (81); the clamping member (51) includes a chuck (511) and a cylinder (512), and one end of the chuck (511) is hinged to the output shaft of the cylinder (512); both sides of the chuck (511) are pivotally connected with connecting blocks (513), and the end surface of the cylinder (512) is provided with a connecting protrusion (5121), and the connecting block (513) is pivotally connected to the connecting protrusion (5121), and the other end of the chuck (511) can be pressed against the end surface of the disk body (82).

4. A vertical pull-up external broaching machine according to claim 3, characterized in that: The internal expansion clamp (52) comprises an internal expansion rod (521) and an internal expansion core (522), one end of the internal expansion rod (521) passes through the internal expansion core (522) and is slidably connected to the internal expansion core (522), the internal expansion rod (521) passes through one end of the internal expansion core (522) and extends to form a protrusion (5211), the internal expansion core (522) is sleeved with a clamping ring (523), and the clamping ring (523) is The outer wall can be pressed against the inner wall of the tube body (81), the end face of the protrusion (5211) can be pressed against the end face of the clamping ring (523), and the inner expansion rod (521) can drive the clamping ring (523) away from the disk body (82), so that the outer wall of the clamping ring (523) is pressed against the inner wall of the tube body (81), and the inner wall of the clamping ring (523) is pressed against the outer wall of the inner expansion core (522).

5. The vertical pull-up external broaching machine according to claim 1, characterized in that: The support device (6) comprises a support member (61), a support inclined block (62), and a support body (63); a slideway 1 (631) and a slideway 2 (632) are provided on the support body (63); the support member (61) is slidably connected to the slideway 1 (631); the support inclined block (62) is slidably connected to the slideway 2 (632); a working inclined surface (621) is provided on the support inclined block (62); one end of the support member (61) can abut against the outer peripheral wall of the disk body (82); and the end of the support member (61) away from the disk body (82) is slidably matched with the working inclined surface (621).

6. A vertical pull-up external broaching machine according to claim 5, characterized in that: Oil cylinder two (11) and oil cylinder three (12) are respectively arranged on both sides of the supporting body (63); one end of the supporting inclined block (62) is fixedly connected with a pressure rod (13); one end of the working inclined surface (621) close to the pressure rod (13) is lower than the other end thereof; the other end of the supporting inclined block (62) can abut against the output end of the oil cylinder two (11); and the end of the pressure rod (13) away from the supporting inclined block (62) can abut against the output end of the oil cylinder three (12).

7. A vertical pull-up external broaching machine according to claim 6, characterized in that: A pull block (14) is provided on one side of the support body (63); the pressure rod (13) passes through the pull block (14) to form a through hole (141); the through hole (141) and the pressure rod (13) are clearance-matched; the pull block (14) can abut against the support inclined block (62); one end of the pressure rod (13) close to the oil cylinder (12) extends to form a protrusion (131); a spring (15) is provided on the pressure rod (13); the spring (15) is sleeved on the pressure rod (13); one end of the spring (15) abuts against the pull block (14), and the other end of the spring (15) abuts against the protrusion (131).

8. The vertical pull-up external broaching machine according to claim 1, characterized in that: The sleeve (44) is provided with a motion channel (441), a rack (16) is slidably connected inside the motion channel (441), a cylinder (17) is arranged outside the sleeve (44), an output end of the cylinder (17) is fixedly connected to the rack (16), a gear (18) is coaxially fixed on the rotating shaft (42), and the gear (18) is meshed with the rack (16).

9. A vertical pull-up external broaching machine according to claim 8, characterized in that: A limit block 1 (19) is coaxially arranged on the rotating shaft (42), the end surface of the limit block 1 (19) is in contact with the end surface of the sleeve (44), and the end surface of the sleeve (44) is provided with a stop block 1 (20) and a stop block 2 (21), and the stop block 1 (20) and the stop block 2 (21) can limit the circumferential position of the limit block 1 (19).

10. A vertical pull-up external broaching machine according to any one of claims 1 to 9, characterized in that: The driving device (7) comprises a motor (71), the output end of the motor (71) is connected to a screw rod (72), a rolling nut (73) is arranged on the workbench (10), the screw rod (72) passes through the rolling nut (73), and the two are rollingly connected.

11. A vertical pull-up external broaching machine according to any one of claims 1 to 9, characterized in that: The bed base (1) is provided with a buffer device (35) capable of applying a vertical upward supporting force to the workbench (10).

12. A vertical pull-up external broaching machine according to claim 11, characterized in that: The buffer device (35) comprises a first cylinder (351) and a second cylinder (352), wherein the first cylinder (351) and the second cylinder (352) are respectively arranged on both sides of the bed column (2), and the upper end surface of the workbench (10) is provided with a first support frame (353) and a second support frame (354), and the output end of the first cylinder (351) and the output end of the second cylinder (352) can respectively abut against the lower end surface of the first support frame (353) and the lower end surface of the second support frame (354).

13. The vertical pull-up external broaching machine according to claim 11, characterized in that: There are at least two cutting tools (3), and at least two tooling fixtures (4) are arranged on the workbench (10), and the number of the tooling fixtures (4) corresponds to the same number of the cutting tools (3).

14. The vertical pull-up external broaching machine according to claim 11, characterized in that: A plurality of slide rails (36) are arranged on the bed column (2), the slide rails (36) are arranged in the vertical direction, and a plurality of sliders (37) are slidably connected to the slide rails (36), and the sliders (37) are fixedly connected to the workbench (10).

15. The vertical pull-up external broaching machine according to claim 11, characterized in that: A groove (38) is provided on the upper surface of the bed base (1), and a first inclined surface (39) and a second inclined surface (40) are provided on the upper surface of the bed base (1) from both sides inward from high to low, and the first inclined surface (39) and the second inclined surface (40) both extend to the groove (38).

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