A precision positioning cutting device and method for piston rod processing

Abstract

The present invention belongs to the field of piston rod cutting processing technology, and in particular to a precision positioning cutting device and method for piston rod processing. In view of the problem in the prior art that the position needs to be repeatedly adjusted to allow the cutting position to reach a predetermined position when cutting piston rod raw material bars, the following scheme is proposed, including a support seat with an opening downward and an overall rectangular box-shaped structure, and a rectangular leakage hole is opened in the middle of the upper surface of the support seat. Before loading, the present invention can push the rack top rod from the front to drive the L-shaped bracket to move slowly backward until the predetermined scale on the rack top rod reaches the cutting position. At this time, the position of the rack top rod is locked to load the material. When loading, it is only necessary to push the piston rod raw material bar directly on the arc-shaped anti-slip groove on the top of the support top plate and continue to push it backward until the end of the piston rod raw material bar reaches a bracket on the L-shaped bracket and contacts the end face of the magnet.

Description

Technical Field

[0001] The present invention relates to the technical field of piston rod cutting and processing, and in particular to a precise positioning cutting device and method for piston rod processing. Background Art

[0002] The piston rod refers to the connecting component that supports the piston to do work. It is widely used in oil cylinders and pneumatic cylinder motion actuators. It is a moving component that moves frequently and has high technical requirements. In the production and processing of the piston rod, the piston rod needs to be cut according to production requirements.

[0003] After searching, it is found that the cutting methods in the prior art require that the raw material be slowly pushed in until the cutting is completed, and while pushing it in, check whether the cutting reaches the predetermined position. For heavier raw materials, multiple adjustments are often required to adjust the position of the round rod raw material so that the cutting position can be accurately moved to the cutting position. Therefore, we need a device that can quickly and accurately send the cutting position of the piston rod raw material to the cutting position. Summary of the invention

[0004] In view of the technical problem in the prior art that the position needs to be repeatedly adjusted to allow the cutting position to reach the predetermined position when cutting the piston rod raw material bar, the present invention adopts the following technical solution:

[0005] A precision positioning cutting device for piston rod processing, comprising a support seat with an opening downward and an overall rectangular box-shaped structure, a rectangular leakage hole is opened in the middle of the upper surface of the support seat, and two hinged frames are fixed to one end of the upper surface of the support seat close to the rectangular leakage hole, and the top ends of the two hinged frames are hinged with cutting devices, and the cutting device comprises two parallel and vertical side baffles hinged on the hinged frames, and a main crossbeam extending in the direction of the rectangular leakage hole is fixed between the top ends of the two side baffles, and a bow saw that moves back and forth along the extension direction of the main crossbeam is arranged below the main crossbeam, and a bracket mechanism is arranged at the rear side of the cutting position in the middle of the rectangular leakage hole, and the bracket mechanism comprises a supporting top column fixed to the ground by anchor bolts, and the supporting top column A supporting top plate is fixed to the top of the support, and an arc-shaped anti-slip groove is reserved at the top of the supporting top plate; an opening is reserved at the rear side of the supporting seat, i.e., the discharging end, and a feeding mechanism that can be positioned is provided at the rear side of the supporting seat, and the feeding mechanism includes two ground rails fixed to the ground and extending backward, and guide legs are slidably connected to the tops of the two ground rails, and the same L-shaped bracket is fixed to the tops of the two guide legs, and a bracket groove of the same height and diameter as the arc-shaped anti-slip groove is opened on the upper surface of the horizontal plate of the L-shaped bracket, and a magnet is embedded on the back plate of the L-shaped bracket; a rack top rod parallel to the ground rail is fixed to the side of the L-shaped bracket, and the starting point of the rack top rod is flush with the front side of the back plate of the L-shaped bracket, that is, flush with the rod head end of the piston rod raw material rod, and a scale is provided on the upper surface of the rack top rod.

[0006] Preferably, the cutting equipment also includes a support rail 2 fixed to the side opposite to the two side baffles near the bottom end, the two support rails 2 openings face upward, and guide frames are fixed on the front and rear sides of one end of the main beam away from the articulated frame, sliding bearings are fixed to the four guide frames, and four suspension rods parallel to each other and perpendicular to the main beam are slidably connected in the four sliding bearings; two support rails 1 openings face upward and parallel to each other are fixed to the bottom ends of the four suspension rods, and the support rails 1 and 2 are on the same vertical plane; the same connecting pressure block is fixed between the top ends of the four suspension rods, and an adjusting screw is fixed to the middle part of the lower surface of the connecting pressure block, the adjusting screw passes through the main beam and is screwed with a top nut, and a compression spring is fixed between the lower surface of the connecting pressure block and the upper surface of the main beam; a pressure rod is fixed to one end of the main beam away from the articulated frame; the bow saw includes an integral A main push rod with an arc-shaped structure, and a boss slider 1 is fixed at the arch position of the main push rod, and an angle steel slide rail matched with the boss slider 1 is fixed to the lower surface of the main crossbeam; a return spring is fixed to the end of the main push rod away from the hinge frame, and a tensioning rod is fixed to the other end of the return spring, and saw blade grooves are opened at the ends of the tensioning rod and the main push rod away from each other for clamping and fixing the saw blade, and the same saw blade is fixed between the two saw blade grooves; a connecting rod is sleeved on the end of the tensioning rod close to the saw blade groove, and a cross connecting frame is sleeved and fixed on the end of the main push rod close to the saw blade groove of its own end, and shaft heads are reserved at the front and rear ends of the cross connecting frame, and pressure wheels are rotatably sleeved on the two shaft heads and the front and rear ends of the connecting rod; the pressure wheel is rollingly connected to the support rail 1 and the support rail 2 at the end, so as to ensure that the sliding friction is rolling friction under high-speed movement, thereby reducing wear and heat generation.

[0007] Preferably, the cross-connecting frame also includes an upper cover block buckled on the main push rod, the lower surface of the upper cover block is sleeved with the lower cover block, the lower cover block is provided with a through hole compatible with the main push rod, the upper surface of the lower cover block is provided with studs near the four corners, and the upper cover block is provided with lock holes compatible with the studs, which are used to fix the upper cover block and the lower cover block together; the upper cover block and the lower cover block are fixed with the same coupling at one end away from the return spring, and a driving motor is fixed to the lower surface of the main cross beam near one end of the articulated frame, a driving wheel is fixed to the top end of the output shaft of the driving motor, and a connecting rod is rotatably connected to the lower surface of the driving wheel near the circumferential edge, and the other end of the connecting rod is hinged to the end of the coupling.

[0008] Preferably, the front side of the support seat is provided with an axial hole 1 and an axial hole 2 of equal height, and a radial bearing and a sliding bearing are respectively embedded in the axial hole 1 and the axial hole 2, and the rack top rod is slidably inserted in the sliding bearing, and a driving rocker is rotatably connected in the radial bearing; a movable shaft is fixed to the lower surface of the support seat near the rack top rod, and a worm gear is sleeved and fixed on the movable shaft, and the worm gear and the rack top rod are meshed with each other; an L-shaped shaft rod frame is fixed to the end of the lower surface of the support seat near the rectangular leakage hole, and the movable shaft is rotatably connected to the L-shaped shaft rod frame; a worm meshing with the worm gear is fixed to the end of the driving rocker.

[0009] Preferably, the rack top rod passes through the end of the rectangular leakage hole, and the scale on the outer wall of the rack top rod is exposed in the rectangular leakage hole. A pointer is fixed to one end of the rectangular leakage hole close to the rack top rod, and the tip of the pointer is located directly below the saw blade and on the upper surface of the scale on the rack top rod.

[0010] Preferably, two vertical and mutually parallel T-shaped slide grooves are opened on the back side of the supporting top plate on the bracket mechanism, and spring blocks are fixed to the bottom of the two T-shaped slide grooves, and a boss slide block 2 is slidably connected to the two T-shaped slide grooves, and a clamping spring is fixed between the lower surface of the boss slide block 2 and the upper surface of the spring block, and the same auxiliary top plate is fixed on the side of the two boss slide blocks away from the bottom of the groove, and the top of the auxiliary top plate is respectively fixed with mutually symmetrical and inclined concave rollers near both sides, and the circumferential outer walls of the two concave rollers are sleeved with rubber jackets, and the positions of the concave rollers are higher than the bottom of the arc-shaped anti-slip groove in the absence of gravity suppression; due to the provision of two raised concave rollers, when the piston rod raw material bar is loaded, it can avoid scratching with the bottom of the arc-shaped anti-slip groove when passing through the bracket mechanism, and can smoothly pass through the arc-shaped anti-slip groove of the bracket mechanism.

[0011] Preferably, the top end of the auxiliary top plate is lower than the bottom end of the arc-shaped anti-slip groove when no material is loaded.

[0012] Preferably, the upper surface of the boss slider 1 is provided with spherical grooves near the four corners, and balls are embedded in the spherical grooves; when the bow saw generates a thrust during use, the friction resistance between the boss slider 1 and the main beam can be reduced, and the bow saw can always be kept in a vertical plane and move quickly.

[0013] Preferably, a U-shaped notch is provided on the back side of the support seat between the L-shaped bracket and the bracket mechanism, and a stabilizing mechanism is provided in the U-shaped notch, the stabilizing mechanism comprising a fixed chassis fixed to the ground directly below the U-shaped notch, an electromagnet is embedded in the middle of the upper surface of the fixed chassis, and recesses are provided on the upper surface of the fixed chassis near the four corners, and a counterweight block of a rectangular structure is slidably connected in the U-shaped notch, and a permanent magnet with the same magnetic pole as the electromagnet after power is supplied to the lower surface of the counterweight block is fixed; a curved hook is fixed to the top of the counterweight block, and an arc-shaped plate is fixed to the top of the curved hook, and rollers are provided at the four corners of the arc-shaped plate, and the cutting edge of the roller is parallel to the axis of the piston rod raw material.

[0014] A precise positioning cutting method for piston rod processing comprises the following steps:

[0015] Step 1: Before cutting, lift the cutting device and reserve enough space for the piston rod raw material to be sawed to pass through, and then fix the lifted cutting device;

[0016] Step 2: Manually drive the rocker to drive the worm to rotate. At this time, the rack top rod and the L-shaped bracket rolling on the ground rail are driven to move slowly backwards under the action of the worm wheel. At the same time, observe the indicator scale of the pointer. When the tip of the pointer reaches the required length, that is, the distance from the cutting position to the end of the magnet, that is, the length of the piston rod raw material to be cut next;

[0017] Step 3: The piston rod raw material bar is horizontally mounted on the top of the supporting top plate of the bracket mechanism. At this time, the piston rod raw material bar is first placed between two concave rollers forming a "V"-shaped structure, and then pushed toward the L-shaped bracket;

[0018] Before advancing, the electromagnet is controlled to be energized, and the stabilizing mechanism is lifted up to allow the piston rod raw material to pass through. When the end of the piston rod raw material reaches the end of the magnet, the feeding is stopped and the electromagnet is controlled to be de-energized. At this time, the piston rod raw material can be tightly pressed, and then cutting can be carried out.

[0019] The beneficial effects of the present invention are:

[0020] 1. Through the feeding mechanism, you can push the rack push rod from the front to drive the L-shaped bracket to move slowly backwards before loading, and wait until the preset scale on the rack push rod reaches the cutting position. At this time, lock the position of the rack push rod to load the material. When loading, you only need to push the piston rod raw material directly on the arc-shaped anti-slip groove on the top of the supporting top plate and continue to push it backwards until the end of the piston rod raw material reaches a bracket on the L-shaped bracket and contacts the end face of the magnet. The magnet can also play a role in fixing the piston rod raw material; then press down the cutting equipment to cut accurately.

[0021] 2. By setting the worm wheel and worm, when it is necessary to push the rack top rod and the L-shaped bracket at its end forward during use, it is only necessary to rotate the driving rocker, and after the distance is determined, the rack top rod will form a self-locking and will not automatically move axially.

[0022] 3. Through the set stabilizing mechanism, the electromagnet can be controlled to cut off power during cutting. At this time, the counterweight block drops under the action of the hook and the arc plate, and the piston rod raw material bar is tightly pressed on the arc anti-slip groove and the L-shaped bracket to ensure stable cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a precision positioning cutting device for piston rod processing proposed by the present invention before cutting;

[0024] Figure 2 This is a bottom view structural schematic diagram of a precision positioning cutting device for piston rod processing proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of a precision positioning and cutting device for piston rod processing proposed by the present invention;

[0026] Figure 4 This is a front view of a precise positioning cutting device for piston rod processing proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the assembly structure of a feeding mechanism in a precision positioning cutting device for piston rod processing proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the assembly structure of a bracket mechanism in a precision positioning and cutting device for piston rod processing proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the overall structure of a stabilizing mechanism of a precision positioning cutting device for piston rod processing proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the overall structure of a cutting device in a precision positioning cutting device for piston rod processing proposed by the present invention;

[0031] Fig. 9 This is a schematic diagram of the overall structure of a bow saw in a precise positioning and cutting device for piston rod processing proposed by the present invention;

[0032] Fig.10 This is a schematic diagram of the exploded structure of a bow saw in a precise positioning cutting device for piston rod processing proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the three-dimensional structure of a cross connecting frame in a precise positioning and cutting device for piston rod processing proposed by the present invention.

[0034] In the figure: 1. Support seat; 101. Rectangular leakage hole; 102. U-shaped notch; 103. Axis hole 1; 104. Axis hole 2; 2. Support rail 1; 201. Support rail 2; 3. Suspension rod; 4. Pressure rod; 5. Connecting pressure block; 6. Main crossbeam; 601. Boss slider 1; 7. Saw blade; 8. L-shaped bracket; 9. Side baffle; 10. Driving motor; 11. Driving wheel; 12. Articulated frame; 13. Fixed chassis; 14. Bracket mechanism; 141. Boss slider 2; 142. Concave roller; 143. Outer jacket; 144. Auxiliary top plate; 145. Spring stopper; 146. Support top column; 147. T-shaped slide; 15. Pointer; 16. Rack Push rod; 17, driving rocker; 18, adjusting screw; 19, reset spring; 20, main push rod; 21, angle steel slide rail; 22, magnet; 23, guide leg; 24, ground rail; 25, worm; 26, worm wheel; 27, L-shaped shaft rod frame; 28, counterweight; 29, compression spring; 30, connecting rod; 31, arc plate; 32, hook; 33, sink groove; 34, electromagnet; 35, roller; 36, cross connecting frame; 3601, upper cover block; 3602, coupling; 3603, lower cover block; 3604, shaft head; 3605, perforation; 3606, stud; 37, tension rod; 3701, saw blade groove; 38, pressure wheel. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In this embodiment, refer to Figure 1-11A precision positioning cutting device for piston rod processing, comprising a support seat 1 with an opening downward and an overall rectangular box-shaped structure, a rectangular leakage hole 101 is opened in the middle of the upper surface of the support seat 1, and two hinged frames 12 are fixed to one end of the upper surface of the support seat 1 close to the rectangular leakage hole 101, and the tops of the two hinged frames 12 are hinged with cutting devices, and the cutting device includes two parallel and vertical side baffles 9 hinged on the hinged frames 12, and a main crossbeam 6 extending in the direction of the rectangular leakage hole 101 is fixed between the tops of the two side baffles 9, and the main crossbeam 6 extends in the direction of the rectangular leakage hole 101. A bow saw that moves back and forth along the extension direction of the main crossbeam 6 is arranged below the support seat 1, and a bracket mechanism 14 is arranged at the rear side of the cutting position in the middle of the rectangular leakage hole 101, and the bracket mechanism 14 includes a support top column 146 fixed to the ground by anchor bolts, and a support top plate is fixed to the top of the support top column 146, and an arc-shaped anti-slip groove is reserved at the top of the support top plate; an opening is reserved at the rear side of the support seat 1, i.e., the discharge end, and a feed mechanism that can be positioned is arranged at the rear side of the support seat 1, and the feed mechanism includes two ground rails 24 fixed to the ground and extending backwards, and two ground rails 2 4 are slidably connected with guide legs 23, and the top of the two guide legs 23 is fixed with the same L-shaped bracket 8, the upper surface of the horizontal plate of the L-shaped bracket 8 is provided with a bracket groove of the same height and diameter as the arc-shaped anti-slip groove, and a magnet 22 is embedded on the back plate of the L-shaped bracket 8; a rack push rod 16 parallel to the ground rail 24 is fixed on the side of the L-shaped bracket 8, and the starting point of the rack push rod 16 is flush with the front of the back plate of the L-shaped bracket 8, that is, flush with the rod head end of the piston rod raw material rod, and the upper surface of the rack push rod 16 is provided with a scale; through the provided feeding mechanism, it can be Before loading, push the rack push rod 16 from the front to drive the L-shaped bracket 8 to move slowly backwards until the predetermined scale on the rack push rod 16 reaches the cutting position. At this time, lock the position of the rack push rod 16 to load the material. When loading, just push the piston rod raw material bar directly on the arc-shaped anti-slip groove on the top of the supporting top plate and continue to push it backwards until the end of the piston rod raw material bar reaches a bracket on the L-shaped bracket 8 and contacts the end face of the magnet 22. The magnet 22 can also play a role in fixing the piston rod raw material bar; then press down the cutting equipment to accurately cut.

[0037] Please refer to Figure 8-11The cutting device also includes a support rail 201 fixed to the opposite side of the two side baffles 9 near the bottom end, the openings of the two support rails 201 are upward, and guide frames are fixed on both sides of the front and rear ends of the end of the main crossbeam 6 away from the hinge frame 12, and sliding bearings are fixed to the four guide frames, and four suspension rods 3 that are parallel to each other and perpendicular to the main crossbeam 6 are slidably connected in the four sliding bearings; two support rails 2 that are open upward and parallel to each other are fixed to the bottom ends of the four suspension rods 3, and the support rails 2 and the support rails The two 201 are on the same vertical plane; a same connecting block 5 is fixed between the top ends of the four suspension rods 3, and an adjusting screw 18 is fixed to the middle of the lower surface of the connecting block 5, the adjusting screw 18 passes through the main cross beam 6 and is screwed with a top nut, and a compression spring 29 is fixed between the lower surface of the connecting block 5 and the upper surface of the main cross beam 6; a pressure rod 4 is fixed to the end of the main cross beam 6 away from the articulated frame 12; the bow saw includes a main push rod 20 with an overall arc-shaped structure, and the arch position of the main push rod 20 is fixed There is a boss slider 601, and the lower surface of the main crossbeam 6 is fixed with an angle steel slide rail 21 adapted to the boss slider 601; the end of the main push rod 20 away from the hinge frame 12 is fixed with a return spring 19, and the other end of the return spring 19 is fixed with a tension rod 37, and the tension rod 37 and the end away from the main push rod 20 are both provided with a saw blade groove 3701 for clamping and fixing the saw blade 7, and the same saw blade 7 is fixed between the two saw blade grooves 3701; the tension rod 37 is close to the saw blade groove 370 1 is sleeved with a connecting rod 30, one end of the main push rod 20 near the saw blade groove 3701 of its own end is sleeved and fixed with a cross connecting frame 36, and the front and rear ends of the cross connecting frame 36 are reserved with shaft heads 3604, and the two shaft heads 3604 and the front and rear ends of the connecting rod 30 are rotatably sleeved with pressure wheels 38; the pressure wheel 38 is rollingly connected to the support rail 1 2 and the support rail 2 201 at the end; to ensure that the sliding friction is rolling friction under high-speed movement, thereby reducing wear and heat generation.

[0038] Please refer to Figure 8-11The cross connecting frame 36 also includes an upper cover block 3601 buckled on the main push rod 20, the lower surface of the upper cover block 3601 is sleeved with a lower cover block 3603, the lower cover block 3603 is provided with a through hole 3605 adapted to the main push rod 20, the upper surface of the lower cover block 3603 is provided with studs 3606 near the four corners, and the upper cover block 3601 is provided with locking holes adapted to the studs 3606, which are used to fix the upper cover block 3601 and the lower cover block 3603 together; the upper cover block 3601 and the lower cover block 360 The same coupling 3602 is fixed to the end away from the return spring 19, and the driving motor 10 is fixed to the end of the lower surface of the main crossbeam 6 close to the hinge frame 12, and the driving wheel 11 is fixed to the top of the output shaft of the driving motor 10, and the lower surface of the driving wheel 11 is rotatably connected to a connecting rod near the circumferential edge, and the other end of the connecting rod is hinged to the end of the coupling 3602; through the provided driving wheel 11 and the connecting rod, the saw blade 7 in the bow saw can be continuously pushed to move back and forth quickly, thereby forming a sawing motion.

[0039] Please refer to Figure 3-5 The front of the support seat 1 is provided with an axial hole 103 and an axial hole 2 104 of equal height, and the axial hole 103 and the axial hole 2 104 are respectively embedded with a radial bearing and a sliding bearing, and the rack top rod 16 is slidably inserted in the sliding bearing, and the driving rocker 17 is rotatably connected in the radial bearing; a movable shaft is fixed on the lower surface of the support seat 1 near the rack top rod 16, and a worm wheel 26 is sleeved and fixed on the movable shaft, and the worm wheel 26 and the rack top rod 16 are meshed with each other; the lower surface of the support seat 1 is close to An L-shaped shaft frame 27 is fixed to the end of the rectangular leakage hole 101, and the movable shaft is rotatably connected to the L-shaped shaft frame 27; a worm 25 meshing with the worm wheel 26 is fixed to the end of the driving rocker 17. By setting the worm wheel 26 and the worm 25, when it is necessary to push the rack top rod 16 and the L-shaped bracket 8 at its end forward during use, it is only necessary to rotate the driving rocker 17, and after the distance is determined, the rack top rod 16 will form a self-locking and will not automatically move axially.

[0040] Please refer to Figure 3-5 The rack top rod 16 passes through the end of the rectangular leakage hole 101, and the scale on the outer wall of the rack top rod 16 is exposed in the rectangular leakage hole 101. A pointer 15 is fixed to one end of the rectangular leakage hole 101 close to the rack top rod 16, and the tip of the pointer 15 is located directly below the saw blade 7 and on the upper surface of the scale of the rack top rod 16; the retreat distance of the L-shaped bracket 8 can be known more accurately, so as to stop the rotation of the driving rocker 17 in time.

[0041] Please refer to Figure 6The back of the support top plate on the bracket mechanism 14 is provided with two vertical and mutually parallel T-shaped slots 147, and the bottoms of the two T-shaped slots 147 are fixed with spring blocks 145, the two T-shaped slots 147 are slidably connected with boss sliders 141, and a tightening spring is fixed between the lower surface of the boss sliders 141 and the upper surface of the spring block 145, and the same auxiliary top plate 144 is fixed on the side of the two boss sliders 141 away from the bottom of the slot, and the top of the auxiliary top plate 144 is fixed with a spring. Symmetrical and inclined concave rollers 142 are fixed near both sides, and the circumferential outer walls of the two concave rollers 142 are sleeved with rubber jackets 143. The positions of the concave rollers 142 are higher than the bottom of the arc-shaped anti-slip groove in the absence of gravity suppression. Due to the provision of two raised concave rollers 142, when the piston rod raw material is loaded and passed through the bracket mechanism 14, it can avoid scratching with the bottom of the arc-shaped anti-slip groove, and can smoothly pass through the arc-shaped anti-slip groove of the bracket mechanism 14.

[0042] Please refer to Figure 4 and Figure 6 The top of the auxiliary top plate 144 is lower than the bottom of the arc-shaped anti-slip groove when no material is loaded.

[0043] Please refer to Fig. 9 The upper surface of the boss slider 601 is provided with spherical grooves near the four corners, and balls are embedded in the spherical grooves; when the bow saw generates a thrust during use, the friction resistance between the boss slider 601 and the main beam 6 is reduced, and the bow saw can always be kept in a vertical plane and move quickly.

[0044] Please refer to Figure 1 and Figure 7 The back of the support seat 1 is provided with a U-shaped notch 102 between the L-shaped bracket 8 and the bracket mechanism 14, and a stabilizing mechanism is arranged in the U-shaped notch 102, the stabilizing mechanism comprises a fixed chassis 13 fixed to the ground directly below the U-shaped notch 102, an electromagnet 34 is embedded in the middle of the upper surface of the fixed chassis 13, and a sinking groove 33 is provided near the four corners of the upper surface of the fixed chassis 13, and a counterweight block 28 of a rectangular structure is slidably connected in the U-shaped notch 102, and a counterweight block 28 is fixed on the lower surface of the counterweight block 28. A permanent magnet with the same magnetic pole after the electric back; a hook 32 is fixed to the top of the counterweight block 28, and an arc plate 31 is fixed to the top of the hook 32, and rollers 35 are provided at the four corners of the arc plate 31, and the cutting edge of the roller 35 is parallel to the axis of the piston rod raw material bar; through the set pressure stabilization mechanism, the electromagnet 34 can be controlled to be powered off during cutting. At this time, the counterweight block 28 is lowered by the hook 32 and the arc plate 31, and the piston rod raw material bar is tightly pressed on the arc anti-slip groove and the L-shaped bracket 8 to perform stable cutting.

[0045] A precise positioning cutting method for piston rod processing comprises the following steps:

[0046] Step 1: Before cutting, lift the cutting device and reserve enough space for the piston rod raw material to be sawed to pass through, and then fix the lifted cutting device;

[0047] Step 2: Manually drive the rocker 17 to drive the worm 25 to rotate. At this time, the rack push rod 16 and the L-shaped bracket 8 rolling on the ground rail 24 are driven to slowly move backwards under the action of the worm wheel 26; at the same time, observe the indication scale of the pointer 15. When the tip of the pointer 15 reaches the required length, that is, the distance from the cutting position to the end of the magnet 22, that is, the length of the piston rod raw material to be cut next;

[0048] Step 3: The piston rod raw material bar is horizontally mounted on the top of the supporting top plate of the bracket mechanism 14. At this time, the piston rod raw material bar is first placed between two concave rollers 142 forming a "V"-shaped structure, and then pushed toward the L-shaped bracket 8;

[0049] Before advancing, the electromagnet 34 is controlled to be energized, and the stabilizing mechanism is lifted up at this time to allow the piston rod raw material to pass through. When the end of the piston rod raw material reaches the end of the magnet 22, the feeding is stopped and the electromagnet is controlled to be de-energized. At this time, the piston rod raw material can be tightly pressed and then cut.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A precision positioning cutting device for piston rod processing, comprising a support seat (1) with an opening downward and an overall rectangular box-shaped structure, a rectangular material leakage hole (101) is opened in the middle of the upper surface of the support seat (1), and two hinged frames (12) are fixed to one end of the upper surface of the support seat (1) near the rectangular material leakage hole (101), and the top ends of the two hinged frames (12) are hinged with cutting devices, characterized in that: The cutting device comprises two parallel and vertical side baffles (9) hinged on the hinged frame (12); a main crossbeam (6) extending in the direction of the rectangular material leakage hole (101) is fixed between the top ends of the two side baffles (9); a bow saw moving back and forth along the extension direction of the main crossbeam (6) is arranged below the main crossbeam (6); a bracket mechanism (14) is arranged at the rear side of the middle of the rectangular material leakage hole (101) at the cutting position, and the bracket mechanism (14) comprises a supporting top column (146) fixed to the ground by anchor bolts, and a supporting top plate is fixed at the top end of the supporting top column (146), and an arc-shaped anti-slip groove is reserved at the top end of the supporting top plate; an opening is reserved at the rear side of the support seat (1), i.e., the material discharge end, and A positioning feeding mechanism is arranged on the rear side of the support seat (1), the feeding mechanism comprising two ground rails (24) fixed to the ground and extending backwards, the two ground rails (24) are slidably connected with guide legs (23) on their upper sides, and the tops of the two guide legs (23) are fixed with the same L-shaped bracket (8), the upper surface of the horizontal plate of the L-shaped bracket (8) is provided with a bracket groove of the same height and diameter as the arc-shaped anti-slip groove, and a magnet (22) is embedded on the back plate of the L-shaped bracket (8); a rack top rod (16) parallel to the ground rail (24) is fixed on the side of the L-shaped bracket (8), and the starting point of the rack top rod (16) is flush with the front side of the back plate of the L-shaped bracket (8), and the upper surface of the rack top rod (16) is provided with a scale; The cutting device further comprises a second support rail (201) fixed to a side opposite to the two side baffles (9) near the bottom end, the openings of the two second support rails (201) facing upward, and guide frames are fixed to the front and rear sides of one end of the main crossbeam (6) away from the hinge frame (12), and sliding bearings are fixed to the four guide frames, and four suspension rods (3) parallel to each other and perpendicular to the main crossbeam (6) are slidably connected in the four sliding bearings; two suspension rods (3) are fixed to the bottom ends of the four suspension rods (3) A support rail (2) is opened upward and parallel to each other, and the support rail (2) and the support rail (201) are on the same vertical plane; a same connecting block (5) is fixed between the top ends of the four suspension rods (3), and an adjusting screw (18) is fixed to the middle of the lower surface of the connecting block (5), the adjusting screw (18) passes through the main cross beam (6) and is screwed with a top nut, and a compression spring (29) is fixed between the lower surface of the connecting block (5) and the upper surface of the main cross beam (6); A pressure rod (4) is fixed to one end of the main crossbeam (6) away from the hinged frame (12); the bow saw comprises a main push rod (20) which is an overall arc-shaped structure, and a boss slider (601) is fixed to the arch position of the main push rod (20), and an angle steel slide rail (21) which is compatible with the boss slider (601) is fixed to the lower surface of the main crossbeam (6); a return spring (19) is fixed to one end of the main push rod (20) away from the hinged frame (12), and a tension rod (37) is fixed to the other end of the return spring (19), and the tension rod (37) and the end away from the main push rod (20) are both provided with a saw blade groove (3701) for The saw blade (7) is fixedly connected, and the same saw blade (7) is fixed between the two saw blade grooves (3701); the end of the tensioning rod (37) close to the saw blade groove (3701) is sleeved with a connecting rod (30); the end of the main push rod (20) close to the saw blade groove (3701) at its own end is sleeved with a cross connecting frame (36), and the front and rear ends of the cross connecting frame (36) are both reserved with shaft heads (3604), and the two shaft heads (3604) and the front and rear ends of the connecting rod (30) are rotatably sleeved with pressure wheels (38); the pressure wheels (38) are rollingly connected to the first support rail (2) and the second support rail (201) at the end.

2. The precise positioning and cutting device for piston rod processing according to claim 1, characterized in that: The cross connecting frame (36) further comprises an upper cover block (3601) buckled on the main push rod (20), the lower surface of the upper cover block (3601) being sleeved with a lower cover block (3603), the lower cover block (3603) being provided with through holes (3605) adapted to the main push rod (20), the upper surface of the lower cover block (3603) being provided with studs (3606) near the four corners, and the upper cover block (3601) being provided with locking holes adapted to the studs (3606) for fastening the upper cover block (3601) to the lower cover block (3601). 603) are fixed together; the upper cover block (3601) and the lower cover block (3603) are fixed with a same coupling (3602) at one end away from the return spring (19), and a driving motor (10) is fixed to one end of the lower surface of the main crossbeam (6) close to the hinge frame (12), a driving wheel (11) is fixed to the top end of the output shaft of the driving motor (10), and a connecting rod is rotatably connected to the lower surface of the driving wheel (11) close to the circumferential edge, and the other end of the connecting rod is hinged to the end of the coupling (3602).

3. The precise positioning and cutting device for piston rod processing according to claim 1, characterized in that: The front surface of the support seat (1) is provided with a first shaft hole (103) and a second shaft hole (104) of equal height, and a radial bearing and a sliding bearing are respectively embedded in the first shaft hole (103) and the second shaft hole (104), and the rack top rod (16) is slidably inserted in the sliding bearing, and a driving rocker (17) is rotatably connected to the radial bearing; a movable shaft is fixed to the lower surface of the support seat (1) near the rack top rod (16), and a worm wheel (26) is sleeved and fixed on the movable shaft, and the worm wheel (26) and the rack top rod (16) are meshed with each other; an L-shaped shaft rod frame (27) is fixed to the end of the lower surface of the support seat (1) near the rectangular leakage hole (101), and the movable shaft is rotatably connected to the L-shaped shaft rod frame (27); a worm (25) meshing with the worm wheel (26) is fixed to the end of the driving rocker (17).

4. The precise positioning and cutting device for piston rod processing according to claim 1, characterized in that: The rack top rod (16) passes through the end of the rectangular leakage hole (101), and the scale on the outer wall of the rack top rod (16) is exposed in the rectangular leakage hole (101). A pointer (15) is fixed to one end of the rectangular leakage hole (101) close to the rack top rod (16), and the tip of the pointer (15) is located directly below the saw blade (7) and on the upper surface of the scale of the rack top rod (16).

5. The precise positioning and cutting device for piston rod processing according to claim 1, characterized in that: The back side of the support top plate on the bracket mechanism (14) is provided with two vertical and mutually parallel T-shaped slide grooves (147), and the bottoms of the two T-shaped slide grooves (147) are fixed with spring blocks (145), the two T-shaped slide grooves (147) are slidably connected with a boss slider (141), and a locking spring is fixed between the lower surface of the boss slider (141) and the upper surface of the spring block (145), the two boss sliders (141) are fixed with the same auxiliary top plate (144) on the side away from the bottom of the groove, and the top of the auxiliary top plate (144) is respectively fixed with mutually symmetrical and inclined concave rollers (142) near both sides, the circumferential outer walls of the two concave rollers (142) are sleeved with outer sleeves (143), and the position of the concave rollers (142) is higher than the bottom of the arc-shaped anti-slip groove in the absence of gravity pressure.

6. The precise positioning and cutting device for piston rod processing according to claim 5, characterized in that: The top of the auxiliary top plate (144) is lower than the bottom of the arc-shaped anti-slip groove when no material is loaded; the upper surface of the boss slide block (601) is provided with spherical grooves near the four corners, and balls are embedded in the spherical grooves.

7. The precise positioning and cutting device for piston rod processing according to claim 1, characterized in that: The back of the support seat (1) is provided with a U-shaped notch (102) between the L-shaped bracket (8) and the bracket mechanism (14), and a stabilizing mechanism is arranged in the U-shaped notch (102), the stabilizing mechanism comprising a fixed chassis (13) fixed to the ground directly below the U-shaped notch (102), an electromagnet (34) embedded in the middle of the upper surface of the fixed chassis (13), and sink grooves (33) are arranged near the four corners of the upper surface of the fixed chassis (13), and the U-shaped notch (102) is provided with a U-shaped notch (102). A rectangular counterweight (28) is slidably connected in the shaped notch (102), and a permanent magnet having the same magnetic pole as the electromagnet (34) when power is supplied to the counterweight (28) is fixed on the lower surface of the counterweight (28); a curved hook (32) is fixed on the top of the counterweight (28), and an arc-shaped plate (31) is fixed on the top of the curved hook (32), and rollers (35) are arranged at the four corners of the arc-shaped plate (31), and the cutting edge of the rollers (35) is parallel to the axis of the piston rod raw material bar.

8. A precision positioning cutting method for piston rod processing, comprising a precision positioning cutting device for piston rod processing as claimed in claim 7, characterized in that: The following steps are involved: Step 1: Before cutting, lift the cutting device and reserve enough space for the piston rod raw material to be sawed to pass through, and then fix the lifted cutting device; Step 2: Manually drive the rocker (17) to drive the worm (25) to rotate. At this time, the rack push rod (16) and the L-shaped bracket (8) rolling on the ground rail (24) are driven to slowly move backwards under the action of the worm wheel (26); at the same time, observe the indication scale of the pointer (15). When the tip of the pointer (15) reaches the required length, that is, the distance from the cutting position to the end of the magnet (22), that is, the length of the piston rod raw material to be cut next; Step 3: The piston rod raw material bar is horizontally mounted on the top of the supporting top plate of the bracket mechanism (14). At this time, the piston rod raw material bar is first placed between two concave rollers (142) forming a "V"-shaped structure, and then pushed toward the L-shaped bracket (8); Before advancing, the electromagnet (34) is controlled to be energized, and the stabilizing mechanism is lifted up to allow the piston rod raw material to pass through. When the end of the piston rod raw material reaches the end of the magnet (22), the feeding is stopped and the electromagnet is controlled to be de-energized. At this time, the piston rod raw material can be tightly pressed and then cut.

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