Safe application mechanism for vertical shaft of numerical control floor type boring machine

Abstract

The invention discloses a vertical shaft safety application mechanism of a numerical control floor type boring machine, and relates to the technical field of floor type boring machines. Comprising a frame, a vertical shaft is installed in the frame, a spindle box is slidably connected to the outer wall of the vertical shaft, a speed limiting assembly is installed on the spindle box, limiting assemblies are installed at the top end and the bottom end of the vertical shaft respectively, the speed limiting assembly comprises a second moving frame, and the bottom end of the second moving frame is slidably connected with the bottom end in the spindle box. Through the arrangement of the speed limiting assembly, in the over-speed moving process of the spindle box, the contact wheel rotates, through transmission, liquid continuously enters the tank body, hydraulic pressure in the tank body rises, the extrusion rod moves and makes contact with the friction plate, the friction force between the extrusion rod and the friction plate is increased, and the spindle box is influenced by the friction force; in this way, the spindle box is decelerated, impact on the spindle box is reduced, and damage to the spindle box and important parts is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of floor boring machines, in particular to a safety application mechanism for a vertical axis of a numerically controlled floor boring machine. Background Art

[0002] In the structure of CNC floor-standing milling and boring machines, when the Y-axis is driven, the main moving unit - the spindle box moves up and down along the vertical axis and guide rails. During the operation of the spindle box, if special circumstances such as motor shaft breakage occur, in the Y-axis transmission chain, the next level of the motor has an electromagnetic brake that can lock the rotating shaft to prevent the spindle box from falling, avoiding casualties and damage to important components.

[0003] For example, "a kind of anti-fall braking mechanism" disclosed in "CN114178855A" includes a fixed block and a guide rail, the fixed block is fixed to the spindle box, the guide rail is fixed to the column, and the bottom of the fixed block is fixedly connected to a bracket structure. Compared with the original Y-axis braking structure of the CNC floor-standing milling and boring machine, the original structure can effectively brake the spindle box falling due to the breakage of the motor shaft, but it cannot effectively brake the transmission chain part after the electromagnetic brake, which has certain limitations. The anti-fall braking mechanism has no association with the Y-axis transmission chain, and only locks the spindle box moving on the Y-axis. It is a physical locking with higher reliability.

[0004] The above mechanism locks the spindle box for Y-axis movement. When the spindle box falls, it is locked, causing the spindle box to stop moving in a short period of time, which will have a large impact on the spindle box and also cause damage to the spindle box and important components. For this purpose, a CNC floor-standing boring machine vertical axis safety application mechanism was invented. Summary of the invention

[0005] The object of the present invention is to provide a safety application mechanism for a vertical axis of a numerically controlled floor-standing boring machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a safety application mechanism for a vertical axis of a CNC floor-standing boring machine, comprising a frame, a vertical axis is installed inside the frame, a spindle box is slidably connected to the outer wall of the vertical axis, a speed limiting component is installed on the spindle box, and a limit position component is installed at the top and bottom ends of the vertical axis respectively; The speed limiting assembly includes a No. 2 movable frame, the bottom end of the No. 2 movable frame is slidably connected to the bottom end of the inside of the spindle box, a movable assembly is installed between the No. 2 movable frame and the spindle box, the inside of the No. 2 movable frame is rotatably connected to a contact wheel, one end of the contact wheel is fixedly connected to a crank, the inner wall of the spindle box is fixedly connected to a cylinder, the inner wall of the cylinder is slidably connected to a No. 1 piston member, one side of the No. 1 piston member is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to the outer wall of the crank, the feed end of the cylinder is fixedly connected to a material storage box, the discharge end of the cylinder is installed with an extrusion assembly, and the feed end and the discharge end of the cylinder are respectively installed with a one-way valve.

[0007] Furthermore, the limit assembly includes a lever, one side of the lever is rotatably connected to the bottom end inside the frame, the bottom end inside the frame is slidably connected to a moving block No. 1, a spring shock-absorbing damper is fixedly connected between the moving block No. 1 and the frame, the outer wall of the vertical shaft is slidably connected to a disc, the bottom end of the disc is fixedly connected to a moving block No. 2, one side of the moving block No. 1 is movably connected to one end of the lever, and one side of the moving block No. 2 is movably connected to the other end of the lever.

[0008] Furthermore, the limiting assembly includes a moving ring, the inner wall of the moving ring is slidably connected to the outer wall of the vertical shaft, the top of the disc is fixedly connected to a bracket, the top of the bracket is rotatably connected to a No. 2 spring shock-absorbing damper, one end of the bracket is fixedly connected to a rotating rod, the bottom end of the rotating rod is rotatably connected to the telescopic end of the No. 2 spring shock-absorbing damper, the bottom end of the moving ring is fixedly connected to a contact block for contacting the top of the rotating rod, a No. 3 spring shock-absorbing damper is installed between the moving ring and the disc, the inner wall of the frame is fixedly connected to a friction member, one side of the friction member is slidably connected to a No. 1 moving frame, the interior of the No. 1 moving frame is slidably provided with a contact friction block, and one end of the rotating rod is slidably connected to one side of the contact friction block.

[0009] Furthermore, the extrusion assembly includes a tank body, which is fixedly installed inside the spindle box, and a No. 2 piston member is slidably connected inside the tank body, an extrusion rod is fixedly connected to one side of the No. 2 piston member, a friction plate member is fixedly connected to the inside of the frame, and a pressure regulating assembly is installed between the discharge end of the tank body and the storage box.

[0010] Furthermore, the pressure-regulating assembly includes a placement rack, which is fixedly mounted on the discharge end of the tank body, the inner wall of the placement rack is threadedly connected with a pressure-regulating bolt, the bottom end of the pressure-regulating bolt is rotatably connected with a movable plate, the bottom end of the movable plate is fixedly connected with a first spring, the bottom end of the first spring is fixedly connected with an extrusion plate, the outer wall of the movable plate and the inner wall of the placement rack are slidably connected, and the discharge end of the tank body and the feed end of the storage box are fixed.

[0011] Furthermore, the moving assembly includes a hydraulic telescopic component, which is fixedly mounted on the spindle box, and a telescopic end of the hydraulic telescopic component is fixed to one end of the second moving frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The safety application mechanism of the vertical axis of the CNC floor-standing boring machine, through the setting of the speed limiting component, when the spindle box moves at an overspeed, the contact wheel rotates, and through the transmission, the liquid continues to enter the tank body, the hydraulic pressure inside the tank body rises, the extrusion rod moves and contacts the friction plate, the friction between the extrusion rod and the friction plate is increased, and the spindle box is affected by the friction force, thereby slowing down the spindle box, reducing the impact on the spindle box, and reducing the damage to the spindle box and important components.

[0013] At the same time, through the setting of the limit assembly, the limit assembly is installed at the top and bottom of the vertical axis respectively. During the stalling process of the spindle box, the speed limiting assembly slows down the speed of the spindle box. The limit assembly further protects the spindle box to avoid direct contact between the spindle box and the frame. The spindle box and the speed limiting assembly are in contact. After transmission, the friction part and the contact friction block are in contact to generate friction. Through the lever, the force of the No. 1 spring shock absorber damper is expanded, thereby slowing down the movement speed of the spindle box, further reducing the damage to the spindle box and important components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an isometric view of the present invention; Figure 2 It is a front view of the limit assembly of the present invention; Figure 3 It is a partial cross-sectional view of the limiting assembly of the present invention; Figure 4 It is an isometric view of the interior of the spindle box of the present invention; Figure 5 is an isometric view of the speed limiting assembly of the present invention; Figure 6 is a cross-sectional view of a speed limiting assembly and an extrusion assembly of the present invention; Figure 7 It is a cross-sectional view of the pressure regulating assembly of the present invention.

[0015] In the figure: 1, frame; 2, vertical axis; 3, spindle box; 4, speed limit assembly; 401, No. 2 moving frame; 402, contact wheel; 403, crank; 404, cylinder; 405, No. 1 piston; 406, connecting rod; 407, storage box; 5, limit assembly; 501, lever; 502, No. 1 moving block; 503, No. 1 spring shock absorber; 504, disc; 505, No. 2 moving block; 506, moving ring; 507, bracket; 508 , No. 2 spring shock absorber and damper; 509, rotating rod; 510, friction member; 511, No. 1 moving frame; 512, contact friction block; 513, No. 3 spring shock absorber and damper; 6, moving assembly; 7, extrusion assembly; 701, tank body; 702, No. 2 piston member; 703, extrusion rod; 704, friction plate member; 8, pressure regulating assembly; 801, placement frame; 802, pressure regulating bolt; 803, moving plate; 804, first spring; 805, extrusion plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] The floor boring machine moves the spindle box 3 on the vertical axis 2 through the internal power device. In order to ensure the movement of the spindle box 3, a safety application mechanism is designed. The safety application mechanism is used to protect the spindle box 3 when the spindle box 3 stalls. The speed limiting component 4 is used to limit the speed of the spindle box 3, and the limit component 5 is used to reduce the impact force generated between the spindle box 3 and the frame 1.

[0018] like Figure 1 - Figure 7 As shown, the present invention provides a technical solution: a CNC floor-type boring machine vertical axis safety application mechanism, comprising a frame 1, a vertical axis 2 is installed inside the frame 1, a spindle box 3 is slidably connected to the outer wall of the vertical axis 2, a speed limiting component 4 is installed on the spindle box 3, and a limit position component 5 is installed at the top and bottom ends of the vertical axis 2 respectively; The speed limiting component 4 includes a No. 2 mobile frame 401, the bottom end of the No. 2 mobile frame 401 is slidably connected to the bottom end of the inside of the spindle box 3, a moving component 6 is installed between the No. 2 mobile frame 401 and the spindle box 3, the inside of the No. 2 mobile frame 401 is rotatably connected to a contact wheel 402, one end of the contact wheel 402 is fixedly connected to a crank 403, the inner wall of the spindle box 3 is fixedly connected to a cylinder 404, the inner wall of the cylinder 404 is slidably connected to a No. 1 piston member 405, one side of the No. 1 piston member 405 is rotatably connected to a connecting rod 406, one end of the connecting rod 406 is rotatably connected to the outer wall of the crank 403, the feed end of the cylinder 404 is fixedly connected to a storage box 407, the discharge end of the cylinder 404 is installed with an extrusion component 7, and the feed end and the discharge end of the cylinder 404 are respectively installed with a one-way valve.

[0019] The limiting assembly 5 includes a lever 501, one side of the lever 501 is rotatably connected to the bottom end inside the frame 1, a moving block No. 1 is slidably connected to the bottom end inside the frame 1, a spring shock-absorbing damper No. 1 503 is fixedly connected between the moving block No. 1 502 and the frame 1, a disc 504 is slidably connected to the outer wall of the vertical axis 2, a moving block No. 2 505 is fixedly connected to the bottom end of the disc 504, one side of the moving block No. 1 502 is movably connected to one end of the lever 501, and one side of the moving block No. 2 505 is movably connected to the other end of the lever 501.

[0020] The limiting assembly 5 includes a moving ring 506, the inner wall of the moving ring 506 is slidably connected to the outer wall of the vertical axis 2, the top of the disc 504 is fixedly connected to a bracket 507, the top of the bracket 507 is rotatably connected to a No. 2 spring shock-absorbing damper 508, one end of the bracket 507 is fixedly connected to a rotating rod 509, the bottom end of the rotating rod 509 is rotatably connected to the telescopic end of the No. 2 spring shock-absorbing damper 508, the bottom end of the moving ring 506 is fixedly connected to a contact block for contacting the top of the rotating rod 509, a No. 3 spring shock-absorbing damper 513 is installed between the moving ring 506 and the disc 504, the inner wall of the frame 1 is fixedly connected to a friction member 510, one side of the friction member 510 is slidably connected to a No. 1 moving frame 511, the interior of the No. 1 moving frame 511 is slidably provided with a contact friction block 512, and one end of the rotating rod 509 is slidably connected to one side of the contact friction block 512.

[0021] The extrusion assembly 7 includes a tank body 701, which is fixedly installed inside the spindle box 3. The interior of the tank body 701 is slidably connected to a No. 2 piston member 702, one side of the No. 2 piston member 702 is fixedly connected to an extrusion rod 703, the interior of the frame 1 is fixedly connected to a friction plate member 704, and a pressure regulating assembly 8 is installed between the discharge end of the tank body 701 and the storage box 407.

[0022] The pressure regulating assembly 8 includes a placement rack 801, which is fixedly mounted on the discharge end of the tank body 701. The inner wall of the placement rack 801 is threadedly connected with a pressure regulating bolt 802. The bottom end of the pressure regulating bolt 802 is rotatably connected with a movable plate 803. The bottom end of the movable plate 803 is fixedly connected with a first spring 804. The bottom end of the first spring 804 is fixedly connected with an extrusion plate 805. The outer wall of the movable plate 803 is slidably connected to the inner wall of the placement rack 801. The discharge end of the tank body 701 and the feed end of the storage box 407 are fixed.

[0023] The moving assembly 6 includes a hydraulic telescopic component, which is fixedly mounted on the spindle box 3 , and a telescopic end of the hydraulic telescopic component is fixed to one end of the second moving frame 401 .

[0024] When the spindle box 3 stalls, the moving component 6 makes the No. 2 moving frame 401 move, thereby making the contact wheel 402 contact with the vertical shaft 2, and the cylinder 404 is fixedly installed on the No. 2 moving frame 401. The discharge end of the cylinder 404 and the tank body 701 can be connected by a hose. At the same time, the tank body 701 is fixedly installed on the spindle box 3. The contact wheel 402 and the vertical shaft 2 are in contact under the action of the moving component 6. Due to the friction between the contact wheel 402 and the vertical shaft 2, the contact wheel 402 rotates during the movement. A gearbox is installed between the contact wheel 402 and the crank 403. The gearbox can realize the change of the transmission ratio between the power input end and the power output end of the gearbox. The speed of the crank 403 is increased by the gearbox, and the connecting rod 406 is affected by the rotation of the crank 403. Due to the rotation of the crank 403, the No. 1 piston 405 moves back and forth. Due to the presence of the one-way valve, the liquid inside the storage box 407 enters the cylinder 404 and passes through the cylinder The cylinder 404 moves into the tank body 701. Due to the increase of liquid inside the tank body 701, the second piston member 702 and the extrusion rod 703 move, the friction plate and the extrusion rod 703 contact, and the hydraulic pressure inside the tank body 701 increases, which can increase the friction between the friction plate and the extrusion rod 703. When the hydraulic pressure inside the tank body 701 is greater than the set pressure of the pressure regulating component 8, the liquid inside the tank body 701 can return to the storage box 407 through the pressure regulating component 8. Through the setting of the speed limiting component 4, during the overspeed movement of the spindle box 3, the contact wheel 402 rotates, and through transmission, the liquid continues to enter the tank body 701, the hydraulic pressure inside the tank body 701 rises, the extrusion rod 703 moves and contacts with the friction plate member 704, the friction between the extrusion rod 703 and the friction plate member 704 is increased, and the spindle box 3 is affected by the friction, thereby slowing down the spindle box 3, reducing the impact on the spindle box 3, and also reducing the damage to the spindle box 3 and important components.

[0025] The pressure-adjusting bolt 802 rotates and moves, the movable plate 803 moves, and the first spring 804 is squeezed, thereby adjusting the pressure between the first spring 804 and the squeezing plate 805. Since the squeezing plate 805 blocks the discharge end of the tank body 701, when the hydraulic pressure inside the tank body 701 is greater than the pressure between the first spring 804 and the squeezing plate 805, the liquid inside the tank body 701 can cause a gap to appear between the squeezing plate 805 and the discharge end of the tank body 701, and then move to the storage tank.

[0026] Limiting components 5 are respectively installed at the top and bottom ends of the vertical axis 2. The limiting components 5 can prevent the spindle box 3 and the frame 1 from making contact in the moving direction during the movement of the spindle box 3. At the same time, the existence of the limiting components 5 can reduce the impact between the spindle box 3 and the frame 1 when the spindle box 3 stalls, and the damage caused by the spindle box 3 to the frame 1 and its own internal structure.

[0027] When the spindle box 3 stalls, it will not only fall, but the structural design of the power device will cause the spindle box 3 to move upward. Therefore, the limit assembly 5 needs to be designed at the top and bottom ends of the vertical axis 2 respectively. When the spindle box 3 moves, it will contact the limit assembly 5. When the spindle box 3 moves to the top and bottom of the vertical axis 2, the spindle box 3 and the moving ring 506 are in contact, and the distance between the moving ring 506 and the disk 504 becomes closer, the No. 3 spring shock absorber damper 513 is squeezed, the contact block contacts and then squeezes the rotating rod 509, causing the rotating rod 509 to rotate, and the two ends of the No. 2 spring shock absorber damper 508 become shorter. The contact friction block 512 at one end of the rotating rod 509 moves toward the friction plate under the influence of the rotation of the rotating rod 509, and the contact friction block 512 comes into contact with the friction plate, thereby slowing down the movement speed of the moving ring 506.

[0028] The No. 3 spring shock-absorbing damper 513 is squeezed, which also makes the disc 504 have a tendency to move. The No. 2 moving block 505 moves downward. Due to the existence of the lever 501, the lever 501 rotates, and the lever 501 applies a force to the No. 1 moving block 502, so that the No. 1 moving block 502 moves. The No. 1 spring shock-absorbing damper 503 is squeezed, and the reaction force of the No. 1 spring shock-absorbing damper 503 makes the downward trend of the disc 504 smaller.

[0029] Due to the existence of lever 501, both sides of lever 501 follow the principle of lever 501, that is, power multiplied by power arm is equal to resistance multiplied by resistance arm, moving block No. 2 505 descends, and moving block No. 1 502 moves. Through lever 501, the power arm of moving block No. 2 505 on lever 501 is smaller than the power arm of moving block No. 1 502 on lever 501, thereby making moving block No. 1 502 move a greater distance than moving block No. 2 505 when spring shock absorber 503 is squeezed, thereby reducing the moving distance of moving block No. 1 502 and disc 504, thereby ensuring that after the spindle box 3 contacts with the moving ring 506, the limit assembly 5 is reduced. To slow down the moving speed of the spindle box 3, the limit assembly 5 is set at the top and bottom of the vertical axis 2 respectively. During the stalling process of the spindle box 3, the speed limiting assembly 4 slows down the speed of the spindle box 3. The limit assembly 5 further protects the spindle box 3 to avoid direct contact between the spindle box 3 and the frame 1. The spindle box 3 contacts the speed limiting assembly 4, and after transmission, the contact friction block 512 moves on the No. 1 moving frame 511, and the friction member 510 contacts the contact friction block 512 to generate friction. Through the lever 501, the force of the No. 1 spring shock absorber 503 is expanded, thereby slowing down the moving speed of the spindle box 3 and further reducing the damage to the spindle box 3 and important components.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A safety application mechanism for a vertical axis of a CNC floor-standing boring machine, comprising a frame (1), characterized in that: A vertical shaft (2) is installed inside the frame (1); a main shaft box (3) is slidably connected to the outer wall of the vertical shaft (2); a speed limiting component (4) is installed on the main shaft box (3); and a limit position component (5) is installed at the top and bottom ends of the vertical shaft (2) respectively; The speed limiting assembly (4) comprises a second moving frame (401), the bottom end of the second moving frame (401) is slidably connected to the bottom end of the interior of the spindle box (3), a moving assembly (6) is installed between the second moving frame (401) and the spindle box (3), a contact wheel (402) is rotatably connected to the interior of the second moving frame (401), one end of the contact wheel (402) is fixedly connected to a crank (403), and the inner wall of the spindle box (3) is fixedly connected to a cylinder (404). ), the inner wall of the cylinder (404) is slidably connected to a No. 1 piston member (405), one side of the No. 1 piston member (405) is rotatably connected to a connecting rod (406), one end of the connecting rod (406) is rotatably connected to the outer wall of the crank (403), the feed end of the cylinder (404) is fixedly connected to a storage box (407), the discharge end of the cylinder (404) is installed with an extrusion assembly (7), and the feed end and the discharge end of the cylinder (404) are respectively installed with a one-way valve.

2. A safety application mechanism for a vertical axis of a CNC floor-standing boring machine according to claim 1, characterized in that: The limit assembly (5) comprises a lever (501), one side of the lever (501) is rotatably connected to the bottom end of the frame (1), the bottom end of the frame (1) is slidably connected to a first moving block (502), a first spring shock absorber (503) is fixedly connected between the first moving block (502) and the frame (1), the outer wall of the vertical shaft (2) is slidably connected to a disk (504), the bottom end of the disk (504) is fixedly connected to a second moving block (505), one side of the first moving block (502) is movably connected to one end of the lever (501), and one side of the second moving block (505) is movably connected to the other end of the lever (501).

3. A safety application mechanism for a vertical axis of a CNC floor-standing boring machine according to claim 2, characterized in that: The limiting assembly (5) comprises a moving ring (506), the inner wall of the moving ring (506) is slidably connected to the outer wall of the vertical shaft (2), the top of the disc (504) is fixedly connected to a bracket (507), the top of the bracket (507) is rotatably connected to a second spring shock absorber (508), one end of the bracket (507) is fixedly connected to a rotating rod (509), the bottom end of the rotating rod (509) is rotatably connected to the telescopic end of the second spring shock absorber (508), the bottom end of the moving ring (506) is fixedly connected to the telescopic end of the second spring shock absorber (508), and the bottom end of the moving ring (506) is fixedly connected to the telescopic end of the second spring shock absorber (508). A contact block for contacting the top of the rotating rod (509) is fixedly connected, a third spring shock-absorbing damper (513) is installed between the moving ring (506) and the disc (504), a friction member (510) is fixedly connected to the inner wall of the frame (1), a first moving frame (511) is slidably connected to one side of the friction member (510), a contact friction block (512) is slidably provided inside the first moving frame (511), and one end of the rotating rod (509) is slidably connected to one side of the contact friction block (512).

4. The safety application mechanism for the vertical axis of a CNC floor-standing boring machine according to claim 1 is characterized in that: The extrusion assembly (7) comprises a tank body (701), the tank body (701) being fixedly mounted inside the spindle box (3), a second piston member (702) being slidably connected inside the tank body (701), an extrusion rod (703) being fixedly connected to one side of the second piston member (702), a friction plate member (704) being fixedly connected inside the frame (1), and a pressure regulating assembly (8) being mounted between the discharge end of the tank body (701) and the storage box (407).

5. A safety application mechanism for a vertical axis of a CNC floor-standing boring machine according to claim 4, characterized in that: The pressure regulating assembly (8) comprises a placing rack (801), the placing rack (801) is fixedly mounted on the discharge end of the tank body (701), the inner wall of the placing rack (801) is threadedly connected with a pressure regulating bolt (802), the bottom end of the pressure regulating bolt (802) is rotatably connected with a moving plate (803), the bottom end of the moving plate (803) is fixedly connected with a first spring (804), the bottom end of the first spring (804) is fixedly connected with an extrusion plate (805), the outer wall of the moving plate (803) and the inner wall of the placing rack (801) are slidably connected, and the discharge end of the tank body (701) and the feed end of the material storage box (407) are fixed.

6. A safety application mechanism for a vertical axis of a CNC floor-standing boring machine according to claim 1, characterized in that: The moving assembly (6) comprises a hydraulic telescopic component, which is fixedly mounted on the spindle box (3), and the telescopic end of the hydraulic telescopic component is fixed to one end of the second moving frame (401).

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