Anti-vibration boring tool base and CNC boring machine

Abstract

The present invention discloses a vibration-resistant boring tool base and a numerically controlled boring machine, which are related to the field of boring technology. The purpose is to solve the technical problem that when the tool vibrates, the boring tool scratches the inner wall of the pipe fitting and damages the boring tool rod and the boring tool. The base comprises a base, one side of the base is slidably connected with a positioning member, and a spring is fixedly connected between the two, the positioning member is rotatably connected with a boring seat, the side of the boring seat away from the positioning member is fixedly connected with the boring tool, the base is slidably connected with a threaded block in contact with the positioning member, and the base is rotatably connected with a screw threadedly connected with the threaded block. When the tool vibrates during the boring process, the present invention first releases the limit between the base and the positioning member, so that the positioning member moves and resets under the action of the adjacent spring, the positioning member drives the boring tool to move in the direction away from the pipe fitting, and then the boring tool is received in the positioning member, thereby reducing the probability of the boring tool scratching the inner wall of the pipe fitting.

Description

Technical Field

[0001] The invention relates to the technical field of boring, and in particular to a vibration-resistant boring tool base and a numerically controlled boring machine. Background Art

[0002] A boring tool is a tool specially used for rough machining, semi-finishing and finishing of existing holes. It is a type of boring tool. When a boring tool is used to bore a pipe, the cutting depth of the boring tool is always changing due to the uneven inside of the pipe. At the same time, as the boring process proceeds, due to the wear of the boring tool and the lack of rigidity of the tool, the boring tool is prone to vibration (i.e., the boring tool produces unexpected high-frequency vibration). When vibration occurs, if no measures are taken, the boring tool will scratch the bored position inside the pipe, causing the pipe to be scrapped. At the same time, when the tool is vibrating, if the vibration amplitude is too large, it will cause damage to the boring bar and the boring tool itself, causing the boring bar axis to bend and the boring tool to break, which will not only reduce work efficiency but also bring huge economic losses. Summary of the invention

[0003] The invention provides a vibration-resistant boring tool base and a numerically controlled boring machine, so as to overcome the disadvantages that when the tool vibrates, the boring tool scratches the inner wall of a pipe fitting and simultaneously damages the boring tool rod and the boring tool.

[0004] The technical solution is: a vibration-resistant boring tool base, comprising a base, one side of the base is limitedly and slidably connected with an adjusting piece, and a spring is fixedly connected between the two, the adjusting piece is rotatably connected with a boring seat, the boring seat is fixedly connected with a boring tool on a side away from the adjusting piece, the base is slidably connected with a threaded block in contact with the adjusting piece, a screw rod threadedly connected to the threaded block is rotatably connected in the base, an adjusting disk is fixedly connected to the screw rod, a trigger piston is sealed and slidably connected in the threaded block, and the two cooperate to form a pushing chamber, and a transmission movable piston is sealed and slidably connected to the threaded block on a side of the adjusting piece close to the threaded block. A plug rod, a spring is fixedly connected between the transmission piston rod and the adjustment member, the transmission piston rod is extruded and matched with the trigger piston, a boring bar is installed on the other side of the base, the boring bar is sealed and rotatably connected with a sealing ring, and the two cooperate to form a transfer chamber, the transfer chamber is connected with the push chamber through a conduit, the boring bar is provided with a hydraulic pump station, the hydraulic pump station is connected with the transfer chamber through a conduit, hydraulic oil is stored in the push chamber, the transfer chamber and the adjacent conduit, the boring bar is provided with a control terminal, the hydraulic pump station is electrically connected to the control terminal, and a vibration knife detector electrically connected to the control terminal is installed in the boring bar.

[0005] Furthermore, the adjusting member cooperates with the transmission piston rod to form a linkage chamber, a fluid storage bag is installed in the adjusting member, and the fluid storage bag is connected with the linkage chamber through a conduit, a side of the adjusting member close to the boring seat is sealed and slidably connected with the limiting piston rod, and the side of the limiting piston rod close to the boring seat cooperates with the adjusting member to form an unlocking chamber, and the side of the limiting piston rod away from the boring seat cooperates with the adjusting member to form a high-pressure chamber, gas is stored in the high-pressure chamber, and the unlocking chamber is connected with the fluid storage bag through a conduit, hydraulic oil is stored in the linkage chamber, the fluid storage bag, the unlocking chamber and the adjacent conduit, a torsion spring is fixed between the boring seat and the adjusting member, and the boring seat is provided with a groove that cooperates with the limiting piston rod.

[0006] Furthermore, the air pressure in the high-pressure chamber is greater than the force of deformation of the liquid storage bag.

[0007] Furthermore, a locking piece is slidably connected inside the adjusting disk, a spring is fixedly connected between the locking piece and the adjusting disk, and the base is provided with grooves which are distributed in an annular manner and are all limitedly matched with the locking piece.

[0008] Furthermore, a locking cylinder is rotatably connected inside the base, the locking cylinder is spline-connected to a threaded cylinder threadably connected to the screw rod, and the threaded cylinder is extrusion-fitted with the threaded block.

[0009] Furthermore, the CNC boring machine also includes a boring machine body, the boring rod, the hydraulic pump station and the control terminal are all installed on the boring machine body, the sealing ring is fixedly connected to the boring machine body, the boring machine body is slidably connected to a support seat, a fixing ring is fixedly connected to the upper side of the support seat, the fixing ring is threadedly connected to a mirror-distributed swivel, the fixing ring is slidably connected to a ring-shaped and mirror-distributed extrusion bevel block, and the extrusion bevel block is extrusion-matched with the adjacent swivel.

[0010] Furthermore, a heavy ring is slidably connected inside the fixed ring, and elastic rings are fixedly connected to both inner and outer sides of the heavy ring, and the elastic ring is fixedly connected to the fixed ring.

[0011] Furthermore, a motor electrically connected to a control terminal is installed in the boring machine body, the output shaft of the motor is fixedly connected with a spline cylinder, a side of the spline cylinder away from the motor is spline-connected with an active part, a spring is fixedly connected between the spline cylinder and the active part, the active part is slidably connected with a passive part, a side of the passive part away from the motor is fixedly connected with a lead screw, the lead screw is threadedly connected to the support seat, the boring machine body is installed with a transmission electric push rod electrically connected to the control terminal, the active part is rotatably connected with a limit ring, and the telescopic end of the transmission electric push rod is slidably connected to the limit ring.

[0012] Furthermore, a telescopic cylinder is fixedly connected to the side of the boring machine body away from the boring rod, and a supporting electric push rod electrically connected to the control terminal is installed in the boring machine body, and the telescopic end of the supporting electric push rod and the telescopic end of the telescopic cylinder are commonly fixedly connected to a mounting column, and the mounting column is rotatably connected to a rotating disk on the side away from the telescopic cylinder, and a limiting piece is sealed and slidably connected to the mounting column, and an arc-shaped groove is provided on the rotating disk and is limitedly matched with the limiting piece, and the limiting piece cooperates with the mounting column to form a reset chamber, and gas is stored in the reset chamber, and an annularly distributed adjusting piece is slidably connected to the mounting column, and the rotating disk is provided with annularly distributed guide grooves that are slidably connected to adjacent adjusting pieces, and a buffer piece is sealed and slidably connected to the adjusting piece, and a through hole is provided at the position of the buffer piece located in the adjacent adjusting piece, a spring is fixed between the adjusting piece and the adjacent buffer piece, and hydraulic oil is stored in the adjusting piece, and a roller is rotatably connected to the side of the buffer piece away from the adjacent adjusting piece.

[0013] Furthermore, a weight block is slidably connected inside the mounting column, and a spring is fixedly connected between the adjusting member and the weight block.

[0014] The present invention has the following advantages: when the tool vibration occurs during the boring process, the present invention first releases the limit between the base and the adjusting member, so that the adjusting member moves and resets under the action of the adjacent spring, and the adjusting member drives the boring tool to move in the direction away from the pipe fitting, and then the boring tool is put into the adjusting member, thereby reducing the probability of the boring tool scratching the inner wall of the pipe fitting, and at the same time protecting the boring tool, thereby reducing the probability of damage caused by the collision between the boring tool and the inner wall of the pipe fitting; when the position of the base and the adjusting member is locked, the influence of the gap between the threads is eliminated by squeezing, thereby reducing the operation steps and facilitating the improvement of boring efficiency; by internally supporting the pipe fitting during boring, the vibration of the pipe fitting is reduced and absorbed, thereby improving the stability of the pipe fitting during boring, and thus improving the boring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the boring bar, hydraulic pump station and motor of the present invention;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the boring bar, base and positioning member of the present invention;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the positioning member, boring seat and boring tool of the present invention;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the boring bar, sealing ring and hydraulic pump station of the present invention;

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the boring seat, the liquid storage bag and the limiting piston rod of the present invention;

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the screw rod, the adjusting disk and the locking member of the present invention;

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the support seat, the fixed ring and the rotating ring of the present invention;

[0023] Fig. 9 It is a three-dimensional structural cross-sectional view of the fixing ring, the heavy ring and the elastic ring of the present invention;

[0024] Fig.10 It is a three-dimensional structural schematic diagram of the motor, spline cylinder and active parts of the present invention;

[0025] Fig.11 It is a three-dimensional structural schematic diagram of the active part, the transmission electric push rod and the limit ring of the present invention;

[0026] Fig.12 It is a three-dimensional structural schematic diagram of the boring machine body, telescopic cylinder and mounting column of the present invention;

[0027] Fig.13 It is a three-dimensional structural schematic diagram of the mounting column, the rotating disk and the limiting member of the present invention;

[0028] Fig.14 It is a schematic diagram of the three-dimensional structure of the adjusting member, the buffer member and the roller of the present invention.

[0029] Legend: 1-boring machine body, 2-boring rod, 3-base, 4-adjusting piece, 5-boring seat, 6-boring cutter, 7-threaded block, 8-screw, 9-adjusting plate, 10-trigger piston, 101-pushing chamber, 11-transmission piston rod, 111-linkage chamber, 12-sealing ring, 121-transfer chamber, 13-hydraulic pump station, 14-liquid storage bag, 15-limiting piston rod, 151-unlocking chamber, 152-high pressure chamber, 16-locking piece, 17-locking cylinder, 18-threaded cylinder, 19- Support seat, 20-fixed ring, 201-heavy ring, 202-elastic ring, 21-swivel ring, 22-extrusion bevel block, 23-motor, 24-spline cylinder, 25-active part, 26-passive part, 27-screw, 28-transmission electric push rod, 29-limiting ring, 30-telescopic cylinder, 31-support electric push rod, 32-mounting column, 33-rotating disk, 34-limiting part, 341-reset chamber, 35-adjusting part, 351-guide groove, 36-buffer, 37-roller, 38-weight block. DETAILED DESCRIPTION

[0030] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] When boring a pipe, the cutting depth of the boring tool is always changing due to the uneven inside of the pipe. At the same time, as the boring progresses, due to the wear of the boring tool and the insufficient rigidity of the tool, the tool chattering is likely to occur during the boring process. When the tool chattering occurs, if no measures are taken, the boring tool will scratch the bored position inside the pipe, causing the pipe to be scrapped. At the same time, when the tool chattering occurs, if the vibration amplitude is too large, it will cause damage to the boring bar and the boring tool itself, causing the boring bar axis to bend and the boring tool to break. The present invention adopts a method of retracting the boring tool during the tool chattering to reduce the probability of the boring tool scratching the inner wall of the pipe, and at the same time reduce the probability of damage to the boring bar and the boring tool.

[0032] Example 1: A vibration-resistant boring tool base, please refer to Figure 1-Figure 5, including a base 3, a positioning member 4 is limitedly and slidably connected to the left side of the base 3, a spring is fixedly connected between the base 3 and the positioning member 4, and is used to drive the positioning member 4 to move and reset, and the left part of the upper side of the positioning member 4 is rotatably connected to a boring seat 5, and the upper part of the boring seat 5 is fixedly connected to a boring tool 6 by bolts, and a threaded block 7 is slidably connected to the lower part of the base 3, and the left side of the threaded block 7 contacts the right side of the positioning member 4, and a screw rod 8 is rotatably connected in the base 3, and the screw rod 8 is threadedly connected to the threaded block 7, and an adjusting disk 9 is fixedly connected to the lower end of the screw rod 8, and a trigger piston 10 is sealed and slidably connected to the left part of the threaded block 7, and the right side of the trigger piston 10 cooperates with the threaded block 7 to form a pushing chamber 101, and a transmission piston rod 11 is sealed and slidably connected to the lower part of the right side of the positioning member 4, and a spring is fixedly connected between the left side of the transmission piston rod 11 and the positioning member 4, and the right part of the transmission piston rod 11 cooperates with the threaded block 7 to limit the position, and is used to When the thread block 7 moves, the adjusting member 4 is driven to move by the transmission piston rod 11. The right end of the transmission piston rod 11 is squeezed and matched with the trigger piston 10 to release the limit of the transmission piston rod 11 on the thread block 7, thereby moving and resetting the adjusting member 4. A boring rod 2 is installed in the middle part of the right side of the base 3 by bolts. The right part of the boring rod 2 is sealed and rotatably connected with a sealing ring 12. The sealing ring 12 cooperates with the boring rod 2 to form a transfer chamber 121. The transfer chamber 121 is connected with the push chamber 101 through a conduit. A hydraulic pump station 13 is provided on the right part of the boring rod 2. The hydraulic pump station 13 is connected with the transfer chamber 121 through a conduit. Hydraulic oil is stored in the push chamber 101, the transfer chamber 121 and the adjacent conduits. A vibration knife detector is installed in the boring rod 2 (this is an existing device and will not be described in detail in this article). The boring rod 2 is provided with a control terminal. The hydraulic pump station 13 and the vibration knife detector are both electrically connected to the control terminal.

[0033] Please refer to Figure 4 and Figure 6The positioning member 4 cooperates with the left side of the transmission piston rod 11 to form a linkage chamber 111. A liquid storage bag 14 is installed on the upper part of the positioning member 4. The liquid storage bag 14 is connected to the linkage chamber 111 through a conduit. The upper part of the positioning member 4 is sealed and slidably connected with the limiting piston rod 15, and the upper side of the lower part of the limiting piston rod 15 cooperates with the positioning member 4 to form an unlocking chamber 151. The unlocking chamber 151 is connected to the liquid storage bag 14 through a conduit. Hydraulic oil is stored in the linkage chamber 111, the liquid storage bag 14, the unlocking chamber 151 and the adjacent conduits. The lower side of the limiting piston rod 15 cooperates with the positioning member 4 to form a high-pressure chamber 152. The high-pressure chamber 152 stores hydraulic oil. Gas is released, and the air pressure in the high-pressure chamber 152 is greater than the force of the deformation of the liquid storage bag 14, which is used to limit the order of the actions of the positioning member 4 and the boring seat 5 to prevent the boring tool 6 from still contacting the workpiece when the boring seat 5 swings, causing the surface of the workpiece to be scratched. A torsion spring with initial force storage is fixed between the boring seat 5 and the positioning member 4, which is used to retract the boring tool 6 into the positioning member 4 when the boring tool 6 loses contact with the workpiece, so as to protect the boring tool 6. A groove is provided at the lower part of the boring seat 5, and the groove of the boring seat 5 is limitedly matched with the limiting piston rod 15, which is used to fix the boring seat 5 at the initial stage to prevent the boring seat 5 and the boring tool 6 from shaking during the boring process.

[0034] Please refer to Figure 4 and Figure 7 A locking piece 16 is slidably connected to the middle of the adjusting disk 9, and a hexagonal hole matching the hexagonal screwdriver is provided in the middle of the lower side of the adjusting disk 9. A spring is fixedly connected between the rear side of the locking piece 16 and the adjusting disk 9. The rear part of the locking piece 16 is located in the hexagonal hole of the adjusting disk 9, and the rear part of the locking piece 16 is provided with an inclined surface. The base 3 is provided with annular grooves, and the annular grooves on the base 3 are all limitedly matched with the locking piece 16.

[0035] Please refer to Figure 3 and Figure 4 The upper part of the base 3 is rotatably connected with a locking cylinder 17, and the middle part of the upper side of the locking cylinder 17 is provided with a hexagonal hole matching the hexagonal screwdriver. The lower part of the locking cylinder 17 is splinedly connected with a threaded cylinder 18, and the threaded cylinder 18 is threadedly connected to the screw rod 8. The threaded cylinder 18 is squeezed and matched with the threaded block 7. Initially, the lower side of the threaded cylinder 18 contacts the upper side of the threaded block 7 for fixing the threaded block 7.

[0036] When boring the pipe fitting, the worker fixes the pipe fitting to be processed on the existing boring machine, and installs the boring rod 2 and the sealing ring 12 on the boring machine, and then installs the base 3 and the parts thereon on the left end of the boring rod 2 with bolts. Then the worker uses a hexagonal screwdriver to drive the locking cylinder 17 to rotate counterclockwise (the rotation angle in this embodiment is from top to bottom), and the locking cylinder 17 drives the threaded cylinder 18 to rotate through the spline, and the threaded cylinder 18 moves up along the thread of the screw 8, and the threaded cylinder 18 loses contact with the threaded block 7, and the limit on the threaded block 7 is released.

[0037] After the threaded barrel 18 loses contact with the threaded block 7, the worker inserts the hexagonal screwdriver into the hexagonal hole of the adjusting disk 9. During the insertion process, the hexagonal screwdriver contacts the inclined surface of the locking piece 16 and squeezes the locking piece 16 backward, compressing the spring adjacent to the locking piece 16, so that the locking piece 16 loses contact with the adjacent groove on the base 3, and the limit on the adjusting disk 9 is released. Then the worker rotates the adjusting disk 9 clockwise with the hexagonal screwdriver, and the adjusting disk 9 drives the screw 8 to rotate. The screw 8 drives the threaded block 7 and the threaded barrel 18 to move up at the same time through the thread, and the threaded block 7 is moved upward. The transmission piston rod 11 drives the adjusting member 4 to move upward, compressing the spring adjacent to the adjusting member 4. The adjusting member 4 drives the boring tool 6 to move upward through the boring seat 5 until the boring tool 6 moves to a predetermined height. The worker stops rotating the screw rod 8 and pulls out the hexagonal screwdriver. The hexagonal screwdriver gradually loses contact with the locking member 16. The locking member 16 is reset under the action of the adjacent spring and re-enters the adjacent groove on the base 3 to limit the adjusting disk 9. By limiting the adjusting disk 9, the adjusting disk 9 is prevented from being offset due to vibration during the boring process, thereby affecting the boring accuracy.

[0038] Existing when adjusting the protruding height of the boring tool 6, there is a gap between the threaded transmission of the threaded block 7 and the screw rod 8. In order to improve the adjustment accuracy, when it is necessary to adjust the boring tool 6 from the current position to the target position below, the boring tool 6 is first reset, and then the boring tool 6 is adjusted upward to the target position, thereby eliminating the influence of the thread gap. However, this is cumbersome and the boring efficiency is low. The solution is as follows: after the worker pulls the hexagonal screwdriver out of the adjustment disk 9, the worker uses the hexagonal screwdriver to rotate the locking cylinder 17 clockwise, and the locking cylinder 17 drives the threaded cylinder 18 to move along the thread of the screw rod 8 through the spline. The lower side of the threaded cylinder 18 gradually contacts the threaded block 7 and limits the threaded block 7. At this time, the worker stops rotating the locking cylinder 17, squeezes the threaded block 7 through the threaded cylinder 18 and limits it. The influence of the gap between the threads is eliminated by squeezing, which reduces the operation steps and is conducive to improving the boring efficiency. At this time, the worker controls the pipe fitting to move right at a uniform speed and bores the pipe fitting.

[0039] When the tool vibration occurs, the tool vibration detector in the boring bar 2 detects the tool vibration and transmits the signal to the control terminal. The control terminal starts the hydraulic pump station 13 and stops the boring machine. The boring machine controls the boring bar 2 to stop rotating. The hydraulic pump station 13 transports the hydraulic oil therein to the transfer chamber 121 through a conduit. The hydraulic oil in the transfer chamber 121 is transported to the push chamber 101 through a conduit. The volume of the hydraulic oil in the push chamber 101 increases and pushes the trigger piston 10 to move left. The trigger piston 10 pushes the transmission piston rod 11 to move left, compressing the spring adjacent to the transmission piston rod 11, so that the transmission piston rod 11 gradually loses contact with the inner side of the thread block 7, and the limit on the thread block 7 is released. At this time, the adjusting member 4 drives the boring tool 6 to move downward relative to the base 3 under the action of its adjacent spring. At the same time, the right end of the transmission piston rod 11 contacts the left side of the thread block 7 and moves downward along the thread block 7 driven by the adjusting member 4, so that the boring tool 6 loses contact with the inner wall of the pipe fitting, preventing the boring tool 6 from scratching the inner wall of the pipe fitting.

[0040] When the transmission piston rod 11 moves to the left, the transmission piston rod 11 squeezes the hydraulic oil in the linkage chamber 111 into the fluid storage bag 14 through the adjacent conduit, causing the fluid storage bag 14 to expand. When the fluid storage bag 14 expands to the limit, the hydraulic oil in the fluid storage bag 14 is transported to the unlocking chamber 151 through the adjacent conduit, and pushes the limiting piston rod 15 to move downward, so that the limiting piston rod 15 gradually loses contact with the groove of the boring seat 5, and the limit on the boring seat 5 is released. At this time, the boring seat 5 drives the boring tool 6 to swing to a horizontal state under the action of its adjacent torsion spring. When vibration occurs, the boring tool 6 is retracted into the adjusting member 4 to reduce the probability of the boring tool 6 scratching the inner wall of the pipe fitting. At the same time, the boring tool 6 is protected to prevent the boring tool 6 from colliding with the inner wall of the pipe fitting and being damaged. Then the worker controls the pipe fitting to move to the left until the boring tool 6 moves out of the interior of the pipe fitting.

[0041] After the boring tool 6 is moved out of the pipe, the worker starts the hydraulic pump station 13 through the control terminal. The hydraulic pump station 13 pumps out the hydraulic oil in the transfer chamber 121 through the adjacent conduit. The transfer chamber 121 pumps out the hydraulic oil in the push chamber 101 through the adjacent conduit. The hydraulic oil in the push chamber 101 drives the trigger piston 10 to move right and reset. Then the worker stops the hydraulic pump station 13 and pushes the adjustment member 4 upward to compress the spring adjacent to the adjustment member 4. The adjustment member 4 drives the transmission piston rod 11 to move upward. The transmission piston rod 11 moves upward along the threaded block 7 and compresses the spring adjacent to the transmission piston rod 11. Under the action of , it finally enters the threaded block 7, so that the transmission piston rod 11 limits the threaded block 7 again. In the process of the transmission piston rod 11 entering the threaded block 7, the hydraulic oil in the liquid storage bag 14 enters the linkage chamber 111 through the adjacent conduit. Then the worker swings the boring seat 5 in the opposite direction, and the groove of the boring seat 5 gradually contacts with the limiting piston rod 15. The limiting piston rod 15 moves upward and enters the groove of the boring seat 5 under the push of the air pressure in the high-pressure chamber 152, and limits the boring seat 5 again. At the same time, the hydraulic oil in the unlocking chamber 151 re-enters the linkage chamber 111 through the adjacent conduit and the liquid storage bag 14.

[0042] After the worker resets the boring seat 5, the worker checks the boring tool 6 and the pipe fitting, analyzes the cause of the tool vibration and solves it, and then continues to bore the pipe fitting. After the boring is completed, the worker repeats the above steps of adjusting the position of the adjusting member 4 in reverse, that is, rotates the locking drum 17 to release the squeezing of the threaded cylinder 18 on the threaded block 7, and then rotates the adjusting disk 9. The adjusting disk 9 drives the adjusting member 4 to move down and reset through the threaded block 7 and the screw 8, and finally reverses the locking drum 17 to end the reset process.

[0043] During boring, the cutting force of the boring tool on the pipe fitting will cause the boring tool rod to bend and vibrate. Due to the reaction force of the boring tool on the pipe fitting, the pipe fitting will also vibrate. Therefore, in order to improve the boring accuracy, it is necessary to perform shock-absorbing treatment on the boring tool and the pipe fitting. In the present invention, hydraulic oil and a tuned mass damping system are used to perform double shock-absorbing treatment on the pipe fitting.

[0044] Example 2: Based on Example 1, a CNC boring machine is used for the above-mentioned anti-vibration boring tool base, please refer to Figure 1 , Figure 2 , Figure 8 and Fig. 9 The CNC boring machine also includes a boring machine body 1, a boring rod 2, a hydraulic pump station 13 and a control terminal are all installed on the boring machine body 1, a sealing ring 12 is fixedly connected to the boring machine body 1, a support seat 19 is slidably connected to the left part of the boring machine body 1, a fixing ring 20 is fixedly connected to the upper side of the support seat 19, the fixing ring 20 is threadedly connected with two rotating rings 21 distributed in left and right mirror images, the fixing ring 20 is slidably connected with an annular extrusion bevel block 22 distributed in left and right mirror images, the position where the extrusion bevel block 22 contacts the inner wall of the fixing ring 20 is an inclined surface, and the side of the extrusion bevel block 22 close to the adjacent rotating ring 21 is extruded and matched with the adjacent rotating ring 21, so as to push the adjacent extrusion bevel block 22 to move toward the center of the fixing ring 20 through the rotating ring 21.

[0045] Please refer to Figure 8 and Fig. 9 A heavy ring 201 is slidably connected to the middle of the fixed ring 20, and elastic rings 202 are fixedly connected to the inner and outer sides of the heavy ring 201. The elastic ring 202 can be made of elastic materials such as silicone and rubber (the elastic ring 202 in the present invention is made of silicone). The elastic ring 202 is fixedly connected to the fixed ring 20. The fixed ring 20, the heavy ring 201 and the elastic ring 202 together form a tuned mass damping system. When the fixed ring 20 vibrates, the vibration of the fixed ring 20 is transmitted to the heavy ring 201 through the elastic ring 202, causing the heavy ring 201 to vibrate. Since the vibrations of the heavy ring 201 and the fixed ring 20 are not synchronized, that is, the vibration of the heavy ring 201 lags behind that of the fixed ring 20, the vibration of the fixed ring 20 is weakened.

[0046] Please refer to Figure 2 , Fig.10 and Fig.11 A motor 23 is installed at the lower right part of the boring machine body 1, and the motor 23 is electrically connected to the control terminal. The output shaft of the motor 23 is fixedly connected with a spline cylinder 24, and the left part of the spline cylinder 24 is spline-connected with an active member 25. A spring is fixedly connected between the left side of the spline cylinder 24 and the active member 25. The left part of the active member 25 is an annular protrusion, and the left side of the active member 25 is slidably connected with a passive member 26. The right part of the passive member 26 is an annular groove. The annular protrusion of the active member 25 is transmission-matched with the annular groove of the passive member 26. A lead screw 27 is fixedly connected to the middle part of the left side of the passive member 26, and the lead screw 27 is threadedly connected to the support seat 19. A transmission electric push rod 28 is installed at the lower right part of the boring machine body 1, and the transmission electric push rod 28 is electrically connected to the control terminal. The middle part of the active member 25 is rotatably connected to a limit ring 29, and the telescopic end of the transmission electric push rod 28 is slidably connected to the limit ring 29, which is used to drive the limit ring 29 to move right.

[0047] Please refer to Figure 2 and Figure 12-14 A telescopic cylinder 30 is fixedly connected to the left side of the boring machine body 1, and a supporting electric push rod 31 is installed on the left side of the boring machine body 1. The supporting electric push rod 31 is electrically connected to the control terminal, and the supporting electric push rod 31 is located in the middle of the telescopic cylinder 30. The telescopic end of the supporting electric push rod 31 and the telescopic end of the telescopic cylinder 30 are commonly fixedly connected with a mounting column 32. A rotating disk 33 is rotatably connected to the right side of the mounting column 32. A front seal in the mounting column 32 is slidably connected to a limit member 34. The rotating disk 33 is provided with arc-shaped grooves. The arc-shaped grooves on the rotating disk 33 are all limitedly matched with the right end of the limit member 34. The limit member 34 cooperates with the mounting column 32 to form a reset chamber 341. The reset chamber 341 contains gas for pushing the limit member 34 to reset. There are three adjusting members 35 distributed in an annular shape, and the rotating disk 33 is provided with an annularly distributed guide groove 351. In the counterclockwise rotation direction (the rotation perspective here is from right to left), the guide groove 351 gradually moves away from the axis of the rotating disk 33, and the guide groove 351 is slidably connected to the adjacent adjusting member 35 to control the distance that the adjusting member 35 moves relative to the mounting column 32. A buffer member 36 is sealed and slidably connected in the adjusting member 35 in the direction away from the central axis of the mounting column 32. Hydraulic oil is stored in the adjusting member 35. The buffer member 36 is located in the adjacent adjusting member 35 and is provided with a through hole for the flow of hydraulic oil. The adjusting member 35 and the adjacent buffer member 36 are fixedly connected with a spring on the side close to the central axis of the mounting column 32, and the buffer member 36 is rotatably connected with a roller 37 on the side away from the adjacent adjusting member 35.

[0048] Please refer to Fig.13 and Fig.14A weight block 38 is slidably connected inside the mounting column 32, and springs with initial force storage are fixedly connected between the three adjusting members 35 and the weight block 38. When the vibration amplitude of the processed pipe fitting is large, the pipe fitting transmits the vibration to the mounting column 32, causing the mounting column 32 to vibrate. The mounting column 32 drives the weight block 38 to vibrate through the adjacent springs of the three adjusting members 35. The asynchronous vibration of the weight block 38 and the mounting column 32 is utilized to weaken and absorb the vibration of the mounting column 32, thereby weakening the vibration of the pipe fitting.

[0049] When boring a pipe fitting, the worker installs the boring bar 2 on the boring machine body 1, and installs the base 3 and the parts thereon on the left end of the boring bar 2 with bolts. Then the worker inserts the left end of the pipe fitting to be processed into the fixed ring 20, and rotates the two swivels 21 to make the two swivels 21 approach each other. The swivels 21 gradually contact the adjacent and annularly distributed extrusion bevel blocks 22, and squeeze the extrusion bevel blocks 22 to move toward the center point of the fixed ring 20. At the same time, the extrusion bevel blocks 22 move along the inclined surface of the fixed ring 20 toward the direction close to the central axis of the fixed ring 20 until the extrusion bevel blocks 22 contact the pipe fitting. The worker stops rotating the swivel 21, and the fixation of the pipe fitting to be processed is completed.

[0050] After the pipe is fixed, the control terminal controls the telescopic end of the supporting electric push rod 31 to extend, and the telescopic end of the supporting electric push rod 31 drives the mounting column 32 to move right, and the mounting column 32 drives the telescopic end of the telescopic cylinder 30 to extend, until the rotating disk 33 moves to the same plane as the right side of the pipe, the control terminal stops supporting the electric push rod 31, and the worker pushes the limiter 34 to the left at this time, compressing the gas in the reset chamber 341, and the limiter 34 gradually loses contact with the adjacent groove on the rotating disk 33, and releases the limit on the rotating disk 33. At this time, the worker rotates the rotating disk 33 clockwise (in this embodiment, the rotation angle is from right to left), and the rotating disk 33 squeezes the adjacent adjusting member 35 through the guide groove 351 to move toward the direction close to the pipe fitting. The adjusting member 35 drives the adjacent roller 37 to contact the inner wall of the pipe fitting through the adjacent buffer member 36. At this time, the worker stops rotating the rotating disk 33 and releases the limiting member 34. The limiting member 34 moves to the right under the push of the air pressure in the reset chamber 341, and the limiting member 34 approaches the rotating disk 33 and enters the adjacent groove thereon, and limits the rotating disk 33 again.

[0051] After the limit piece 34 limits the rotating disk 33 again, the control terminal starts the motor 23 and the supporting electric push rod 31, the output shaft of the motor 23 drives the spline cylinder 24 to rotate, the spline cylinder 24 drives the active part 25 to rotate through the spline, the active part 25 drives the passive part 26 to rotate, the passive part 26 drives the lead screw 27 to rotate, the lead screw 27 drives the support seat 19 to move right through the thread, the support seat 19 drives the pipe fitting to move right through the fixing ring 20 and its related parts, and at the same time, the telescopic end of the supporting electric push rod 31 extends out to push the mounting column 32 to move right and remain relatively still with the pipeline until the rotating disk 33 is about to contact the adjusting member 4, and the supporting electric push rod 31 stops.

[0052] The worker repeats the above steps to adjust the position of the boring tool 6. After finishing, the worker starts the boring machine body 1 and the motor 23 through the control terminal, and sets the feed speed and the cutting line speed. The boring machine body 1 drives the boring rod 2 to rotate, and the boring rod 2 drives the boring tool 6 to rotate at the cutting line speed. At the same time, the output shaft of the motor 23 drives the lead screw 27 to rotate, and the lead screw 27 drives the support seat 19 and the pipe fitting thereon to move right at the set feed speed through the thread, and the boring tool 6 gradually contacts the pipe fitting and bores the pipe fitting.

[0053] In the event of an emergency such as a vibration cutter, it is necessary to immediately stop the feeding of the pipe fitting to prevent damage to the boring tool 6 and the pipe fitting. However, after the motor 23 is stopped urgently, the pipe fitting will still move forward a certain distance due to inertia. To avoid this, an electromagnetic brake or a mechanical brake is usually used to stop the motor 23. However, the motor 23 and its related parts stop quickly while rotating, and their own inertia may cause damage to them. A solution to this situation is as follows: After the vibration cutter detector detects the vibration cutter and transmits a signal to the control terminal, the control terminal starts the transmission electric push rod 28 and stops the motor 23. The telescopic end of the transmission electric push rod 28 contracts and drives the limit ring 29 to move right. The limit ring 29 drives the active part 25 to move right, compressing the spring adjacent to the active part 25, so that the active part 25 gradually loses contact with the passive part 26, and the transmission relationship between the two is released. At this time, the output shaft of the motor 23 drives the spline cylinder 24 to stop slowly, reducing the damage to the motor 23 caused by the emergency stop.

[0054] After the pipe stops moving, the worker starts the transmission electric push rod 28 and the motor 23 through the control terminal. The telescopic end of the transmission electric push rod 28 extends and resets. The active part 25 moves left under the action of the adjacent spring and contacts with the right side of the passive part 26. As the output shaft of the motor 23 rotates in the opposite direction, the output shaft of the motor 23 drives the active part 25 to reverse through the spline cylinder 24. The protrusion of the active part 25 gradually corresponds to the groove of the passive part 26, and under the action of the adjacent spring of the active part 25, the protrusion of the active part 25 enters the adjacent groove on the passive part 26. At this time, the active part 25 is reset, and the active part 25 drives the lead screw 27 to reverse through the passive part 26. The lead screw 27 drives the pipe on the support seat 19 to move left until the boring tool 6 moves out of the interior of the pipe. The control terminal stops the motor 23. At this time, repeat the above steps, check the conditions of the boring tool 6 and the pipe, analyze the cause of the vibration and solve it.

[0055] After the worker solves the cause of the tool vibration, the worker starts the motor 23 and the boring machine body 1 through the control terminal. The transmission support seat 19 and the pipe fittings thereon move right to the position when the tool vibrates and then continue to move right at the feed speed. At the same time, the boring machine body 1 controls the boring rod 2 to rotate and continues to bore the pipe fitting. After the boring is completed, the control terminal stops the boring machine body 1, and the boring rod 2 stops rotating. Then the worker rotates the swivel 21 in the opposite direction. The swivel 21 gradually releases the extrusion of the adjacent extrusion bevel block 22, and the extrusion force of the extrusion bevel block 22 on the pipe fitting is reduced. At this time, the worker removes the pipe fitting from the fixed ring 20 to complete the processing of the pipe fitting. Then the worker controls the support seat 19 and the parts thereon to move left and reset through the control terminal.

[0056] During the boring process, the cutting force of the boring cutter 6 on the pipe will cause the boring bar 2 to bend and vibrate. Due to the reaction force of the boring cutter 6 on the pipe, the pipe will also vibrate. In order to reduce the probability of the pipe colliding with the boring cutter 6 during vibration, it is necessary to slow down the vibration of the pipe. The specific operation is as follows: When the pipe vibrates, the pipe transmits the vibration to the fixed ring 20 through a plurality of extrusion bevel blocks 22, causing the fixed ring 20 to rotate. The fixed ring 20 drives the heavy ring 201 to vibrate through the elastic ring 202. At this time, the fixed ring 20, the heavy ring 201 and the elastic ring 202 form a tuned mass damping system, thereby weakening the vibration of the pipe.

[0057] During the boring process, the vibration generated by the pipe is transmitted to the adjacent buffer 36 through the three rollers 37, forcing the buffer 36 to move into the adjacent adjusting member 35 and compressing the spring adjacent to the adjusting member 35. The hydraulic oil in the adjusting member 35 flows through the through hole of the adjacent buffer 36 to buffer the movement of the adjacent buffer 36 and reduce the vibration of the adjacent buffer 36.

[0058] When the vibration amplitude of the pipe fitting is large, the vibration of the pipe fitting is transmitted to the three buffer members 36, squeezing the hydraulic oil in the adjacent adjusting member 35. The hydraulic oil in the adjusting member 35 cannot flow through the through holes on the adjacent buffer members 36 in time, so that the buffer member 36 transmits the vibration to the adjacent adjusting member 35, and the adjusting member 35 transmits the vibration to the telescopic cylinder 30. The telescopic cylinder 30 drives the weight 38 to swing through the three springs adjacent to the adjusting members 35. At this time, the telescopic cylinder 30, the springs adjacent to the three adjusting members 35 and the weight 38 constitute a tuned mass damping system. The hysteresis of the vibration of the weight 38 relative to the vibration of the telescopic cylinder 30 is used to buffer the vibration of the telescopic cylinder 30. By internally supporting the pipe fitting and reducing and absorbing the vibration of the pipe fitting at the same time, the stability of the pipe fitting during boring is improved, thereby improving the boring accuracy.

[0059] After boring is completed, the control terminal controls the telescopic end of the supporting electric push rod 31 to retract, and the telescopic end of the supporting electric push rod 31 drives the mounting column 32 and the parts thereon to move left and reset. At this time, the worker repeats the above steps to release the fixation of the pipe fitting, and then removes the pipe fitting. The worker repeats the above steps of pushing the limit member 34 to the left, releases the limit of the rotating disk 33 by the limit member 34, and then rotates the rotating disk 33 in the opposite direction. The rotating disk 33 drives the adjacent adjusting member 35 to move toward the direction close to the central axis of the mounting column 32 through the three guide grooves 351, compressing the spring adjacent to the adjusting member 35 until the adjusting member 35 is reset. At this time, the above steps of moving the limit member 34 to the right are repeated to limit the rotating disk 33.

[0060] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A vibration-resistant boring tool base, comprising a base, one side of the base is limitedly slidably connected to a positioning member, and a spring is fixedly connected between the two, the positioning member is rotatably connected to a boring seat, and the boring tool is fixedly connected to the side of the boring seat away from the positioning member, characterized in that: The cam is provided with a screw rod which is threadedly connected to the base, and the screw rod is fixedly connected with an adjusting disk. A trigger piston is sealingly and slidingly connected to the thread block, and the two cooperate to form a pushing chamber. A transmission piston rod which is limitedly matched with the thread block is sealingly and slidingly connected to the side of the adjusting member close to the thread block. A spring is fixedly connected between the transmission piston rod and the adjusting member. The transmission piston rod is pressed and matched with the trigger piston. A boring bar is installed on the other side of the base. A sealing ring is sealingly and rotatably connected to the boring bar, and the two cooperate to form a transfer chamber. The transfer chamber is connected with the pushing chamber through a conduit. The boring bar is provided with a hydraulic pump station, and the hydraulic pump station is connected with the transfer chamber through a conduit. Hydraulic oil is stored in the pushing chamber, the transfer chamber and the adjacent conduit. The boring bar is provided with a control terminal. The hydraulic pump station is electrically connected to the control terminal. A vibration knife detector which is electrically connected to the control terminal is installed in the boring bar. The adjusting member cooperates with the transmission piston rod to form a linkage chamber, a fluid storage bag is installed in the adjusting member, and the fluid storage bag is connected with the linkage chamber through a conduit, a side of the adjusting member close to the boring seat is sealed and slidably connected with the limiting piston rod, and the side of the limiting piston rod close to the boring seat cooperates with the adjusting member to form an unlocking chamber, and a side of the limiting piston rod away from the boring seat cooperates with the adjusting member to form a high-pressure chamber, gas is stored in the high-pressure chamber, and the unlocking chamber is connected with the fluid storage bag through a conduit, hydraulic oil is stored in the linkage chamber, the fluid storage bag, the unlocking chamber and the adjacent conduit, a torsion spring is fixed between the boring seat and the adjusting member, and the boring seat is provided with a groove that cooperates with the limiting piston rod.

2. The vibration-resistant boring tool base according to claim 1, characterized in that: The air pressure in the high-pressure chamber is greater than the force of deformation of the liquid storage bag.

3. The vibration-resistant boring tool base according to claim 2, characterized in that: A locking piece is slidably connected in the adjusting disk, a spring is fixedly connected between the locking piece and the adjusting disk, and the base is provided with grooves which are distributed in an annular manner and are all limitedly matched with the locking piece.

4. The vibration-resistant boring tool base according to claim 3, characterized in that: A locking cylinder is rotatably connected inside the base, and the locking cylinder is spline-connected to a threaded cylinder threadably connected to the screw rod, and the threaded cylinder is extrusion-fitted with the threaded block.

5. A CNC boring machine, characterized in that: The CNC boring machine is applied to a vibration-resistant boring tool base as described in claim 4, and the CNC boring machine also includes a boring machine body, the boring rod, the hydraulic pump station and the control terminal are all installed on the boring machine body, the sealing ring is fixedly connected to the boring machine body, the boring machine body is slidably connected to a support seat, the upper side of the support seat is fixedly connected to a fixing ring, the fixing ring is threadedly connected to a mirror-distributed rotating ring, the fixing ring is slidably connected to an annular and mirror-distributed extrusion bevel block, and the extrusion bevel block is extrusion-matched with the adjacent rotating ring.

6. The CNC boring machine according to claim 5, characterized in that: A heavy ring is slidably connected inside the fixed ring, and elastic rings are fixedly connected to both inner and outer sides of the heavy ring, and the elastic ring is fixedly connected to the fixed ring.

7. The CNC boring machine according to claim 6, characterized in that: A motor electrically connected to a control terminal is installed in the boring machine body, the output shaft of the motor is fixedly connected with a spline cylinder, a side of the spline cylinder away from the motor is spline-connected with an active part, a spring is fixedly connected between the spline cylinder and the active part, the active part is slidably connected with a passive part, a side of the passive part away from the motor is fixedly connected with a lead screw, the lead screw is threadedly connected to the support seat, a transmission electric push rod electrically connected to the control terminal is installed in the boring machine body, the active part is rotatably connected to a limit ring, and the telescopic end of the transmission electric push rod is slidably connected to the limit ring.

8. The CNC boring machine according to claim 7, characterized in that: A telescopic cylinder is fixedly connected to the side of the boring machine body away from the boring rod, and a supporting electric push rod electrically connected to the control terminal is installed in the boring machine body, and a mounting column is fixedly connected to the telescopic end of the supporting electric push rod and the telescopic end of the telescopic cylinder, and the mounting column is rotatably connected to a rotating disk at a side away from the telescopic cylinder, and a limiting member is sealed and slidably connected to the mounting column, and an arc-shaped groove is provided on the rotating disk and is limitedly matched with the limiting member, and the limiting member cooperates with the mounting column to form a reset chamber, and gas is stored in the reset chamber, and an annularly distributed adjusting member is slidably connected to the mounting column, and the rotating disk is provided with an annularly distributed guide groove that is slidably connected to adjacent adjusting members, and a buffer member is sealed and slidably connected to the adjusting member, and a through hole is provided at a position of the buffer member located in the adjacent adjusting member, a spring is fixedly connected between the adjusting member and the adjacent buffer member, and hydraulic oil is stored in the adjusting member, and a roller is rotatably connected to the side of the buffer member away from the adjacent adjusting member.

9. The CNC boring machine according to claim 8, characterized in that: A weight block is slidably connected inside the mounting column, and a spring is fixedly connected between the adjusting member and the weight block.

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