CN109158744B

CN109158744B - Stable numerical control plasma cutting machine workstation of centre gripping

Info

Publication number: CN109158744B
Application number: CN201811209970.7A
Authority: CN
Inventors: 付雕; 刘威; 王建国; 王成刚; 马锋; 王威宁
Original assignee: Wuzhong Huanghe Electric Welder Co ltd
Current assignee: Wuzhong Huanghe Electric Welder Co ltd
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2020-04-28
Anticipated expiration: 2038-10-17
Also published as: CN109158744A

Abstract

The invention discloses a numerical control plasma cutting machine workstation with stable clamping, which comprises a workbench, a supporting leg, a sliding groove, a movable block, a limiting pipe, a limiting rod, a first spring, a rope ring, a traction rope, a winding wheel, a clamp, a fixing frame, a hydraulic cylinder, a piston pipe, a piston frame, a first piston, a piston rod, a second piston, a second spring, a clamping plate, a threaded hole, a guide rail, a bolt, a guide groove, a sliding block, a guide block, an oil storage tank, an oil filling hole, a cutting frame, a wheel frame, a transmission wheel, a first transmission belt, a motor, a second transmission belt, a transmission block, a roller, a transmission rod, a mounting plate, a cylinder, a plasma cutting machine and a clamping groove. The invention has the characteristics of stable clamping, wide applicability, high cutting efficiency, accurate positioning and the like.

Description

Stable numerical control plasma cutting machine workstation of centre gripping

Technical Field

The invention relates to the technical field of machining, in particular to a numerically-controlled plasma cutting machine workstation stable in clamping.

Background

Plasma arc cutting is a process in which the heat of a high temperature plasma arc is used to locally melt (and vaporize) the metal in the cut of a workpiece and the molten metal is removed by the momentum of the high speed plasma to form the cut. Numerical control plasma cutting has evolved rapidly since its development in the united states in the mid-50 s of the 20 th century. With the rapid development of computer and digital control technology, the numerical control cutting is also developed vigorously, and the processing precision is improved. The existing numerical control plasma cutting machine workstation is not firm enough when clamping a workpiece due to the structural design, so that the workpiece can easily shake under the action of external force when cutting, the cutting precision is reduced, the quality of a finished product is influenced, the waste of workpiece materials is also caused, the production cost is improved, and the enterprise benefit is reduced.

Disclosure of Invention

Based on the technical problems in the prior art, the invention provides a numerical control plasma cutting machine workstation with stable clamping.

The invention provides a stably-clamped numerical control plasma cutting machine workstation, which comprises a workbench, wherein supporting legs are fixedly connected to two sides of the bottom of the workbench, a sliding groove is formed in the workbench, movable blocks are inserted into two sides of the sliding groove, a limiting pipe is fixedly connected to the bottom of each movable block, a limiting rod is inserted into each limiting pipe, two ends of each limiting rod are fixedly connected to the side wall of each supporting leg, a first spring is fixedly connected to the side wall of one side of each movable block, the other end of each first spring is fixedly connected to the side wall of each supporting leg, a rope ring is fixedly connected to the side wall of the other side of each movable block, a traction rope is tied on each rope ring, a reel is installed in the center of the bottom of the workbench, the other end of each traction rope is wound on each reel, a clamp is fixedly connected to the end of the top of each movable block, threaded holes are formed in two, a guide rail is arranged right above the threaded hole, a threaded hole which is the same as that of the workbench is formed in the center of the guide rail, a bolt is connected in the threaded hole, a guide groove is formed in the guide rail, a sliding block is arranged above the guide rail, a guide block is fixedly connected to the bottom of the sliding block and inserted into the guide groove, oil storage tanks are formed in the tops of two sides of the guide rail, oil filling holes are formed in two sides of the sliding block and are located right above the oil storage tanks, a cutting frame is fixedly connected to the top of the sliding block, wheel frames are fixedly connected to two sides of the top of the cutting frame, driving wheels are movably connected to the top ends of the wheel frames, a first driving belt is connected between the two driving wheels in a transmission mode, a motor is installed on the outer wall of one side of the cutting frame, a second driving belt is connected to an, the utility model discloses a plasma cutting machine, including first drive belt, gyro wheel, cutting frame, cylinder, transmission block, gyro wheel, transmission block, the below of first drive belt is provided with the transmission piece, the gyro wheel is all installed to the bottom both sides of transmission piece, just the bottom center fixedly connected with transfer line of transmission piece, the spout the same with the workstation is seted up at the top of cutting frame, the transfer line passes the spout on the cutting frame and extends to the below of cutting frame, just the bottom fixedly connected with mounting panel of transfer line, the cylinder is installed to the bottom of mounting panel, plasma cutting machine is installed to the output.

Preferably, anchor clamps include the mount, the pneumatic cylinder is installed to the inner wall of mount, just the equal fixedly connected with piston pipe of both sides lateral wall of mount, the piston pipe is L font structure, the output shaft fixedly connected with piston frame of pneumatic cylinder, the piston frame is U font structure, and the one end mouth of pipe of piston pipe is all inserted at its both ends, just the terminal equal fixedly connected with first piston in both sides of piston frame, the piston rod has been inserted to the other end mouth of pipe of piston pipe, the top fixedly connected with second piston of piston rod, the top fixedly connected with second spring of second piston, the other end fixed connection of second spring is at the pipe wall of piston pipe, the bottom fixedly connected with grip block of piston rod.

Preferably, the side wall of the clamping plate is fixedly connected with a plurality of hemispherical rubber blocks, and herringbone anti-skid lines are engraved on the surface of each rubber block.

Preferably, the lateral walls of the two sides of the guide rail are both provided with clamping grooves, the sliding block is U-shaped, and the bottom ends of the two sides of the sliding block are both inwards protruded and inserted into the clamping grooves.

Preferably, the surface of the first transmission belt is provided with a circle of triangular belt teeth, and the top surface of the transmission block is provided with a plurality of rack teeth meshed with the belt teeth.

Compared with the prior art, the invention has the beneficial effects that:

1. the centre gripping is stable, can effectively avoid the work piece to take place to rock when the cutting and influence the precision of cutting.

2. The clamp has wide applicability, and can adjust the distance between the two clamps according to the size of the workpiece to be cut so as to clamp workpieces with different sizes.

3. The cutting efficiency is high, and the location is accurate, but quick adjustment arrives the position of appointed cutting point.

4. The friction force applied when the cutting frame slides forwards and backwards can be effectively reduced, so that the abrasion generated by parts is reduced, and the service life of the cutting frame is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the clamp;

FIG. 3 is an enlarged view of FIG. 1 at A;

fig. 4 is a sectional view taken at a-a of fig. 1.

In the figure: 1 workbench, 2 supporting legs, 3 sliding chutes, 4 movable blocks, 5 limiting pipes, 6 limiting rods, 7 first springs, 8 rope rings, 9 traction ropes, 10 reels, 11 clamps, 110 fixed frames, 111 hydraulic cylinders, 112 piston pipes, 113 piston frames, 114 first pistons, 115 piston rods, 116 second pistons, 117 second springs, 118 clamping plates, 12 threaded holes, 13 guide rails, 14 bolts, 15 guide grooves, 16 sliding blocks, 17 guide blocks, 18 oil storage grooves, 19 oil filling holes, 20 cutting frames, 21 wheel frames, 22 driving wheels, 23 first driving belts, 24 motors, 25 second driving belts, 26 driving blocks, 27 rollers, 28 driving rods, 29 mounting plates, 30 cylinders, 31 and the like, and 32 clamping grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a stable-clamping numerical control plasma cutting machine workstation comprises a workbench 1, supporting legs 2 are fixedly connected to two sides of the bottom of the workbench 1, a chute 3 is formed in the workbench 1, movable blocks 4 are inserted into two sides of the chute 3, a limiting pipe 5 is fixedly connected to the bottom of each movable block 4, a limiting rod 6 is inserted into each limiting pipe 5, the rod diameter of each limiting rod 6 is equal to the pipe diameter of each limiting pipe 5, two ends of each limiting rod 6 are fixedly connected to the side wall of each supporting leg 2, a first spring 7 is fixedly connected to the side wall of one side of each movable block 4, the other end of each first spring 7 is fixedly connected to the side wall of each supporting leg 2, a rope ring 8 is fixedly connected to the side wall of the other side of each movable block 4, a traction rope 9 is tied to each rope ring 8, a reel 10 is installed at the center of the bottom of the workbench 1, the top end of the movable block 4 is fixedly connected with a clamp 11, the clamp 11 comprises a fixed frame 110, a hydraulic cylinder 111 is installed on the inner wall of the fixed frame 110, the side walls of the two sides of the fixed frame 110 are fixedly connected with piston tubes 112, the piston tubes 112 are in an L-shaped structure, the output shaft of the hydraulic cylinder 111 is fixedly connected with a piston frame 113, the piston frame 113 is in a U-shaped structure, the two ends of the piston frame 113 are inserted into a tube opening at one end of the piston tube 112, the ends of the two sides of the piston frame 113 are fixedly connected with first pistons 114, a tube opening at the other end of the piston tube 112 is inserted with a piston rod 115, the top end of the piston rod 115 is fixedly connected with second pistons 116, the second pistons 116 and the first pistons 114 are made of rubber materials, the diameters of the second pistons 116 and the first pistons 114 are equal to the tube diameter of the piston tube 112, so that the air, the other end of the second spring 117 is fixedly connected to the tube wall of the piston tube 112, the bottom end of the piston rod 115 is fixedly connected with a clamping plate 118, the side wall of the clamping plate 118 is fixedly connected with a plurality of hemispherical rubber blocks, herringbone anti-slip lines are engraved on the surface of each rubber block, the rubber blocks have elasticity, and can elastically deform when being extruded, so that the rubber blocks can play a role in buffering and protecting on one hand, damage to a workpiece caused by overlarge clamping force of the clamping plate 118 is avoided, on the other hand, friction between the clamping plate 118 and the workpiece can be increased, so that the clamping stability is improved, and slipping is prevented, threaded holes 12 are respectively formed in two sides of the top of the workbench 1, a guide rail 13 is arranged right above the threaded holes 12, a threaded hole 12 is also formed in the center of the guide rail 13, a bolt 14 is connected in the threaded hole 12, a guide groove 15 is, the lateral walls of two sides of the guide rail 13 are both provided with a clamping groove 32, the slider 16 is U-shaped, the bottom ends of two sides of the slider 16 are both inwards protruded and inserted into the clamping groove 32, the clamping groove 32 can be utilized to play a role of limiting, thereby improving the stability of the slider 16 and preventing the slider 16 from shaking when sliding along the guide rail 13, the bottom of the slider 16 is fixedly connected with a guide block 17, the guide block 17 is inserted into a guide groove 15, the tops of two sides of the guide rail 13 are provided with oil storage tanks 18, the two sides of the slider 16 are provided with oil filling holes 19, the oil filling holes 19 are positioned right above the oil storage tanks 18, the top of the slider 16 is fixedly connected with a cutting frame 20, the two sides of the top of the cutting frame 20 are fixedly connected with a wheel frame 21, the top end of the wheel frame 21 is movably connected with a driving wheel 22, a first driving belt 23 is connected, the other end of the second transmission belt 25 is connected to the transmission wheel 22 in a transmission manner, a transmission block 26 is arranged below the first transmission belt 23, a circle of triangular teeth are arranged on the surface of the first transmission belt 23, a plurality of rack teeth meshed with the teeth are arranged on the top surface of the transmission block 26, when the first transmission belt 23 moves, the transmission block 26 can be driven to move by utilizing the meshing action between the teeth and the rack teeth, rollers 27 are arranged on both sides of the bottom of the transmission block 26, a transmission rod 28 is fixedly connected to the center of the bottom of the transmission block 26, a sliding chute 3 is also formed in the top of the cutting frame 20, the transmission rod 28 penetrates through the sliding chute 3 in the cutting frame 20 and extends to the lower portion of the cutting frame 20, a mounting plate 29 is fixedly connected to the bottom of the transmission rod 28, an air cylinder 30 is arranged at the bottom of the mounting plate 29, a plasma cutting machine 31 is arranged at the bottom end, the stability of the transmission rod 28 and the plasma cutting machine 31 can be improved by utilizing the rolling action of the roller 27, so that the phenomenon that the cutting precision of the plasma cutting machine 31 is influenced by shaking when the transmission block 26 moves left and right is avoided.

The invention comprises the following steps: when cutting, a workpiece to be cut is placed between the two clamps 11, the reel 10 is driven to rotate by an external power supply and a switch, the traction rope 9 is tightened after the reel 10 rotates, the movable blocks 4 on two sides are driven to move towards the middle direction along the sliding groove 3 by the rope ring 8, so that the distance between the two clamps 11 can be adjusted according to the size of the workpiece to be cut, the limiting pipe 5 and the limiting rod 6 can limit the movable blocks 4 to prevent the movable blocks 4 from shaking during movement to influence the clamping stability of the clamps 11, then the hydraulic cylinders 111 on the two clamps 11 are driven by the external power supply and the switch, the hydraulic cylinders 111 drive the piston frame 113 to move and insert two ends of the piston frame 113 into a pipe orifice at one end of the piston pipe 112, when the piston frame 113 is inserted, the first pistons 114 at the tail ends of two sides can be inwards extruded along the pipe wall of the piston pipe 112, so that the air in the piston tube 112 is compressed to generate air pressure, the air pressure can push the second piston 116 to move along the other end orifice of the piston tube 112, thereby driving the piston rod 115 and the clamping plates 118 to move together, until the two clamping plates 118 tightly abut against the top and bottom surfaces of the two sides of the workpiece, thereby clamping and fixing the workpiece, then the external power supply and the switch driving motor 24 rotate to drive the driving wheel 22 to rotate through the second driving belt 25, the driving wheel 22 rotates to drive the first driving belt 23 to move, the first driving belt 23 drives the driving block 26 to move left and right under the meshing action of the teeth and the rack teeth, the driving block 26 drives the mounting plate 29 and the plasma cutting machine 31 to move left and right through the driving rod 28, after the plasma cutting machine 31 moves right above the cutting point, the external power supply and the switch driving cylinder 30 drive the plasma cutting machine 31 to move up and down to adjust the cutting depth, finally, the plasma cutting machine 31 is used for cutting the workpiece, the sliding block 16 and the cutting frame 20 can slide back and forth along the guide rail 13 during cutting, so that the position of a cutting point can be adjusted as required by matching with the movement of the first transmission belt 23, the cutting efficiency is improved, lubricating oil can be injected into the oil storage tank 18 through the oil filling hole 19, when the lubricating oil in the oil storage tank 18 is accumulated to a certain amount, the lubricating oil can overflow and fill gaps between the guide block 17 and the guide groove 15 and between the sliding block 16 and the clamping groove 32, the friction force borne by the cutting frame 20 during back and forth sliding is reduced, the lubricating effect is achieved, the abrasion generated by the sliding block 16 and the guide rail 13 is effectively reduced, and the service life of the cutting frame is prolonged.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The numerical control plasma cutting machine workstation with stable clamping comprises a workbench (1) and is characterized in that supporting legs (2) are fixedly connected to two sides of the bottom of the workbench (1), a sliding groove (3) is formed in the workbench (1), movable blocks (4) are inserted into two sides of the sliding groove (3), a limiting pipe (5) is fixedly connected to the bottom of each movable block (4), a limiting rod (6) is inserted into each limiting pipe (5), two ends of each limiting rod (6) are fixedly connected to the side walls of the corresponding supporting legs (2), a first spring (7) is fixedly connected to one side wall of each movable block (4), the other end of each first spring (7) is fixedly connected to the side wall of the corresponding supporting leg (2), a rope ring (8) is fixedly connected to the other side wall of each movable block (4), and a traction rope (9) is tied to each rope ring (8), reel (10) is installed at the bottom center of workstation (1), the other end winding of haulage rope (9) is on reel (10), the terminal fixedly connected with anchor clamps (11) in top of movable block (4), threaded hole (12) have all been seted up to the top both sides of workstation (1), be provided with guide rail (13) directly over threaded hole (12), the same screw hole (12) with workstation (1) are seted up at the center of guide rail (13), screw hole (12) female connection has bolt (14), guide slot (15) have been seted up on guide rail (13), and the top of guide rail (13) is provided with slider (16), the bottom fixedly connected with guide block (17) of slider (16), guide block (17) insert in guide slot (15), oil storage tank (18) have been seted up at the both sides top of guide rail (13), oil filling holes (19) are formed in two sides of the sliding block (16), the oil filling holes (19) are located right above the oil storage tank (18), a cutting frame (20) is fixedly connected to the top of the sliding block (16), wheel frames (21) are fixedly connected to two sides of the top of the cutting frame (20), transmission wheels (22) are movably connected to the top ends of the wheel frames (21), a first transmission belt (23) is connected between the two transmission wheels (22) in a transmission mode, a motor (24) is installed on the outer wall of one side of the cutting frame (20), a second transmission belt (25) is connected to an output shaft of the motor (24) in a transmission mode, the other end of the second transmission belt (25) is connected to the transmission wheels (22) in a transmission mode, a transmission block (26) is arranged below the first transmission belt (23), idler wheels (27) are installed on two sides of the bottom of the transmission block (26), and a transmission rod (28) is fixedly connected, the top of cutting frame (20) is seted up spout (3) the same with workstation (1), transfer line (28) pass spout (3) on cutting frame (20) and extend to the below of cutting frame (20), just the bottom fixedly connected with mounting panel (29) of transfer line (28), cylinder (30) are installed to the bottom of mounting panel (29), plasma cutting machine (31) are installed to the output shaft bottom of cylinder (30).

2. The stable-clamping numerical control plasma cutting machine workstation according to claim 1, wherein the fixture (11) comprises a fixed frame (110), a hydraulic cylinder (111) is installed on the inner wall of the fixed frame (110), piston tubes (112) are fixedly connected to the side walls of the two sides of the fixed frame (110), the piston tubes (112) are of an L-shaped structure, an output shaft of the hydraulic cylinder (111) is fixedly connected with a piston frame (113), the piston frame (113) is of a U-shaped structure, the two ends of the piston frame are inserted into a tube opening at one end of each piston tube (112), the tail ends of the two sides of the piston frame (113) are fixedly connected with a first piston (114), a piston rod (115) is inserted into a tube opening at the other end of each piston tube (112), a second piston (116) is fixedly connected to the top end of each piston rod (115), and a second spring (117) is fixedly connected to the top of each second piston (116), the other end of the second spring (117) is fixedly connected to the pipe wall of the piston pipe (112), and the bottom end of the piston rod (115) is fixedly connected with a clamping plate (118).

3. The stably-clamped numerical control plasma cutting machine workstation according to claim 2, characterized in that a plurality of hemispherical rubber blocks are fixedly connected to the side wall of the clamping plate (118), and herringbone antiskid lines are engraved on the surface of each rubber block.

4. The stably-clamped numerical control plasma cutting machine workstation according to claim 1, wherein the side walls of the two sides of the guide rail (13) are both provided with a clamping groove (32), the sliding block (16) is U-shaped, and the bottom ends of the two sides of the sliding block are both inwards protruded and inserted into the clamping groove (32).

5. A clamp-stable, digitally controlled plasma cutting machine station according to claim 1, characterized in that the surface of the first belt (23) is provided with a ring of triangular teeth and the top surface of the block (26) is provided with a number of teeth meshing with the teeth.