CN112496067A - Bearing ring backward extrusion stripping position variable device - Google Patents

Abstract

The invention discloses a bearing ring backward extrusion stripping position variable device, and relates to the field of metal pressure processing forming and automation. The invention comprises a frame, an upper template of a crank press, a backward extrusion punch fixed on the upper template, a lower template and a female die arranged on the lower template, wherein a material ejecting rod is arranged below the female die, the lower end of the lower material ejecting rod is abutted against a swinging beam, one end of the swinging beam is hinged on the frame, the other end of the swinging beam is connected with the lower end of a material stripping rod, and a positioning locking and unlocking mechanism is arranged between the upper part of the material stripping rod and the upper template, so that the upper template and the material stripping rod are locked when the upper template moves downwards to a set distance from the top end. The bearing ring backward extrusion stripping position variable device is characterized in that a clamping body is designed to clamp a stripping rod at a specific position of an upper template in a downward moving mode until the upper template moves upward to a specific position and then loosens the stripping rod, so that the time for clamping a material blank by a manipulator is prolonged, and the problems that a sliding block does not wait at an upper dead point, the manipulator has sufficient time, and clamping and feeding actions are realized are solved.

Description

Bearing ring backward extrusion stripping position variable device

Technical Field

The invention discloses a bearing ring backward extrusion stripping position variable device, and relates to the field of metal pressure processing forming and automation.

Background

The reverse extrusion forming by using a closed single-point crank press is the most common processing method for manufacturing small and medium-sized bearing rings, and the process route is as follows: blanking, upsetting, backward extrusion, bottom cutting and ring rolling. The blanking is realized on a special shearing machine, the upsetting, the backward extrusion and the bottoming in the last three processes are usually realized on a crank press, the upper die holder and the lower die holder are connected with an upper sliding block and a lower fixed table of the press, the material clamping and taking of the three stations are completed by 2-3 operators and are transmitted to the next station, and the process has the factors of poor working environment, high labor intensity, low safety factor and the like. Therefore, forging enterprises are difficult to recruit operators, and particularly young operators are difficult to recruit, so that enterprise development is influenced. Scientific technology is different day by day, forging automation is the inevitable trend of current technological development, and the three-dimensional walking beam manipulator is most suitable for the three-station automatic operation.

Usually, a crank slide block has one stroke of 0-360 degrees to represent the state of a vehicle in an electric system, taking an intermediate backward extrusion process as an example, the slide block is at an upper dead center (0 degree position), an operator puts a cake blank which is upset in a first process into a backward extrusion station, at the moment, the upper plane of a lower ejection rod 6 is superposed with the upper plane of a female die 7 to facilitate material discharging and material taking, the slide block continuously descends, a backward extrusion punch 8 starts to extrude a blank to form when the slide block descends to a certain position, the backward extrusion forming is finished when the slide block descends to a lower dead center by 180 degrees, the slide block starts to ascend, when the slide block ascends to the upper dead center (360 degrees), an ejection device positioned below a lower fixed table of a press and a pull rod fixed on an upper die plate eject the backward extruded blank together, the operator quickly transfers the ejected blank to a third station for punching, the punched hole, and then sends the blank back to a material channel to a next, the operation is repeated in such a way, and the series of actions are completed by a manipulator, so that the walking beam is the best scheme.

Four mechanical claws are arranged on a beam by a walking beam, the beam finishes X, Y, Z three-dimensional actions under the operation of three servo systems, in the actual production process, the beat of a press is 20-40 times per minute, the average time is 30 times, the time for finishing one cycle is 2 seconds, the clamping and feeding actions of a manipulator are finished in such short time, the beat of the press and the beat of the press are not consistent, and the 'collision clamp' fault occurs, the method for solving the problem at present is that a sliding block waits for 1-2 seconds at an upper dead point to reduce the 'collision clamp' fault, so the efficiency is reduced by about 50%, the other problem caused by the efficiency reduction is that the service life of a die is low and the precision of a forging piece is poor, and the 'hot iron tapping' is said to be the reason, the patent is a device, the sliding block is adjustable between 270-360 degrees, and a backward extrusion workpiece is ejected out of the die, the method not only improves the efficiency and reduces the failure rate, but also can improve the service life of the die and the precision of the forge piece.

Disclosure of Invention

The invention aims to solve the technical problems that a sliding block does not wait at the top dead center, a mechanical arm does not have sufficient time, clamping and feeding actions are realized, collision is easy to occur, the sliding block waits at the top dead center, the efficiency is greatly reduced, the service life of a die is short, the precision of a forge piece is poor, and the invention provides a bearing ring back extrusion stripping position variable device.

The object of the invention is achieved in the following way:

the bearing ring backward extrusion stripping position variable device comprises a rack of a crank press, a backward extrusion punch head fixed on an upper template and an upper template of the crank press, a female die arranged on a lower template and a lower template of the crank press, wherein a stripping rod is arranged below the female die, the lower end of the stripping rod is abutted against a swinging beam, one end of the swinging beam is hinged on the rack, the other end of the swinging beam is connected with the lower end of the stripping rod, and a positioning locking unlocking mechanism is arranged between the upper part of the stripping rod and the upper template, so that when the upper template moves downwards to a set distance from the top end, the upper template and the stripping rod are locked, and when the upper template and the stripping rod move downwards to the set distance position after moving downwards together to the lower dead point of a sliding block, the upper template and the stripping rod are unlocked, the upper template moves upwards, the stripping rod does not move upwards, and the upper template moves upwards to the upper dead.

The locking unlocking mechanism is an upper template fixing guide pipe, the guide pipe is sleeved with a fixing clamp holder support, two clamp plates which are oppositely and oppositely arranged are hinged on the clamp holder support to form a clamp holder, a left clamp head of the clamp holder is deeply inserted into the guide pipe and is matched with or separated from a stripping rod in a clamping mode, a right clamp head is deeply inserted into a sliding sleeve on the right side of the support, a clamp shaft is arranged on the sliding sleeve in a penetrating mode, the clamp shaft is a step shaft which is thin in the upper portion and thick in the lower portion, and the step surface is a conical surface.

The lower end of the clamping shaft is a touch rod, the touch rod is a threaded spiral telescopic rod, and the touch rod and a stripping rod adjusting bolt are used for adjusting and setting the distance of locking and unlocking.

And a hinged shaft of the swinging beam hinged on the rack is fixed on a sliding block of the guide rail pair, and a locking bolt is arranged between the sliding block and the guide rail.

Compared with the prior art, the invention designs a bearing ring backward extrusion stripping position variable device, sets an upper template and a stripping rod to move downwards together to a lower dead point of a slide block and then move upwards together to a set distance position, so that the stripping rod participates in a part of a section of circulation path of the slide block of a crank press from an upper dead point of the slide block to a lower dead point of the slide block, a clamping body clamps and locks the stripping rod when the upper template moves downwards to the set position, then the stripping rod moves downwards to the lower dead point of the slide block, then an upper die base continues to carry the stripping rod locked by the clamping body to move upwards to the set position, the stripping rod separates from the upper die base, the stripping rod keeps the height of a blank ejected out of a female die until the stripping rod is locked by the lower die base and drives the stripping rod to move downwards, so that the time for clamping the blank by a mechanical claw is increased from the contact rod when the upper die base is separated from the contact with the lower dead point to the contact rod and the lower contact rod when the mechanical claw is lifted upwards The limiting table is contacted. The time for clamping the blank by the manipulator is increased, and the problems that the slide block does not wait at the upper dead point, the manipulator has sufficient time, and clamping and feeding actions are realized are solved.

Drawings

FIG. 1 is a front view of a processing flow of a device with variable backward extrusion stripping positions of a bearing ring.

FIG. 2 is a sectional view of the device for backward extrusion and stripping position variation of the bearing ring.

FIG. 3 is a schematic view of a clamping body of the device for backward extrusion and stripping position variation of a bearing ring.

Wherein, 1 lower working table, 2 lower template, 3 bottom cutting die base, 4 bottom cutting die, 5 bottom cutting die gland, 6 open width pad, 7 open width stripper plate, 8 open width seat, 9 open width adjusting sleeve, 10 clamp, 11 clamp shaft, 12 bottom cutting punch, 13 back extrusion punch press nut, 14 back extrusion punch seat, 15 upper template, 16 back extrusion punch, 17 upsetting upper fixing nut, 18 upsetting upper platform, 19 upsetting lower platform, 20 upsetting adjusting pad, 21 upsetting lower seat, 22 guide tube, 23 stripper bar, 231 ring groove, 24 back extrusion press nut, 25 back extrusion die, 26 back extrusion die seat, 27 stripper bar, 28 lower ejector bar, 29 lower template, 30 lower stripper plate swivel base, 31 swivel shaft, 32 lower stripper bar seat, 33 swing beam, 34 clamp shaft reset spring, 35 stripper bar limit bolt, 36 stripper bar washer, 37 contact rod, 38 spring, 39 clamp lower limit seat, 40 clamp support, 40 lower limit seat support, The clamp plates 41 and 42 are connected with springs and 43 touch the rod limit bolt and the stripper rod support spring 44.

Detailed Description

As shown in the attached figure 1, the bearing ring backward extrusion stripping position variable device processing flow is characterized in that the top of a lower workbench 1 is fixedly connected with a lower template 2, one side of the top of the lower template 2 is provided with a bottom cutting die base 3, the other side of the top of the lower template 2 is fixedly provided with an upsetting lower seat 21, the middle part of the top of the lower template 2 is provided with a backward extrusion concave die seat 26, the top of the backward extrusion concave die seat 26 is connected with a backward extrusion concave die 25, the top of the backward extrusion concave die 25 is connected with a backward extrusion pressing nut 24, the bottom of the backward extrusion concave die 25 is provided with a material ejecting rod 27, the bottom of the material ejecting rod 27 is connected with a lower material ejecting rod 28, a backward extrusion punch 16 connected with the backward extrusion punch seat 14 is arranged right above the backward extrusion concave die 25, the top of the backward extrusion punch seat 14 is fixedly connected with an upper template 15, one end of the upper template 15 close, an upsetting lower platform 19 is arranged right below the upsetting upper platform 18, an upsetting adjusting pad 20 is connected to the bottom of the upsetting lower platform 19, an upsetting lower seat 21 is fixedly connected to the bottom of the upsetting adjusting pad 20, a bottom cutting punch seat is fixedly connected to one end, away from the upsetting lower seat 21, of the upper template 15, a bottom cutting punch seat is fixedly connected to the bottom cutting punch seat, a bottom cutting punch 12 is fixedly connected to the bottom cutting punch seat, an open width adjusting sleeve 9 is sleeved on the outer surface of the bottom cutting punch 12, open width seats 8 are fixedly connected to two sides of the open width adjusting sleeve 9, an open width pad 6 is fixedly connected to the bottom of the open width adjusting sleeve 9, open width stripper plates 7 are fixedly connected to two ends of the open width pad 6, a bottom cutting die base 3 is located right below the bottom cutting punch 12, a bottom cutting die 4 is mounted on the top of the bottom.

As shown in fig. 2, the device for changing the position of the stripping in the backward extrusion of the bearing ring comprises a frame of the crank press, a backward extrusion punch 16 fixed to an upper template 15 and the upper template of the crank press, a female die 25 arranged on a lower template 2 and the lower template of the crank press, a material ejecting rod 27 below the female die 25, a lower ejector rod 28 fixedly connected to the lower end of the material ejecting rod 27, a lower ejector rod 28 abutting against a swing beam 33 through a lower ejector rod seat 32, one end of the swing beam 33 hinged to the frame, the other end of the swing beam 33 connected to the lower end of the stripping rod 23, an annular groove 231 arranged on the stripping rod 23, a positioning locking and unlocking mechanism arranged between the upper part of the stripping rod 23 and the upper template 25, so that when the upper template 15 moves down to a set distance from the top end, the upper template 15 and the stripping rod 23 are locked, and when the upper template 15 and the stripping rod 23 move down to a dead point of a slide block and then move up, the upper template 15 and the stripping rod 23 are unlocked, the upper template 15 moves upwards, the stripping rod 23 does not move upwards any more, and the upper template 15 moves upwards to the top dead center of the slide block, so that the cycle is repeated.

Locking release mechanism is upper die plate 15 fixed stand pipe 22, stand pipe 22 cup joints fixed clamping clamp body support 40, articulated two splint 41 that set up relatively on the clamping body support 40, constitute clamping clamp body 10 with splint coupling spring 42, clamping clamp body 10 left side clamping head deepens stand pipe 22, cooperate or break away from with the centre gripping of taking off material pole 23, clamping clamp body 10 right side clamping head deepens the sliding sleeve on support right side, clamping axle 11 is worn to establish by the sliding sleeve, clamping axle 11 is thick step axle from top to bottom, the step face is the conical surface, clamping axle reset spring 34 has been cup jointed to clamping axle 11 thick step off-axial surface, clamping axle reset spring 34 can make clamping clamp body 10 of the epaxial centre gripping of the thick step of clamping axle 11 go up to the thin step of clamping axle 11 when the upper die plate 15 goes up to the settlement position.

The articulated shaft of the oscillating beam 33 articulated on the rack is fixed on the sliding block of the guide rail pair, a locking bolt is arranged between the sliding block and the guide rail, the stripping rod 23 is connected with the oscillating beam 33 through a spring 38, when the upper die holder 15 is tightly clamped with the stripping rod 23, the oscillating beam 33 is pulled when the stripping rod 23 goes upwards, the oscillating beam 33 is pressed when the stripping rod 23 goes downwards, the oscillating beam 33 is provided with a movable connecting hole connected with the stripping rod 23, the diameter of the hole is larger than that of the stripping rod 23, so that the stripping rod 23 can swing back and forth in the hole very easily, the movable connecting hole can also be a notch-shaped hole, the outer surface of the stripping rod 23 is in threaded connection with a stripping rod limiting bolt 35, the outer surface of the stripping rod 23 is sleeved with a stripping rod supporting spring 44, the stripping rod supporting spring 44 is positioned between the stripping rod limiting bolt 35 and the lower die plate 2, the bottom of the stripping rod 23 is connected with a pull rod gasket 36, and the abrasion with the lower surface of the, the service life of the part is prolonged, the swing beam 33 is connected with the lower ejector plate rotating base 30 through the rotating shaft 31, and the length between the rotating shaft 31 and the lower ejector rod seat 32 can be adjusted on the lower ejector plate rotating base 30 through the rotating shaft 31.

As shown in fig. 3, the clamping body 10 is composed of a clamping body support 40, a clamping plate 41 and a clamping plate connecting spring 42, the guide tube 22 is sleeved and fixed on the clamping body support 40, the clamping body support 40 is hinged with two clamping plates 41 which are oppositely arranged, the clamping body 10 is formed by the clamping plate connecting spring 42, and the left clamping head of the clamping body 10 extends into the guide tube 22 and is clamped and matched with or separated from the stripping rod 23. The right card clamping head of the clamping body 10 goes deep into the sliding sleeve on the right side of the support, and the sliding sleeve penetrates through the clamping shaft 11.

The working process of the invention is as follows: starting a crank press, driving an upper template 15 to move downwards by the crank press, driving a clamping shaft 11 to move downwards by the upper template 15, stopping moving downwards by the clamping shaft 11 after the bottom of the clamping shaft 11 is contacted with a lower limit table 39, driving a clamping body 10 on a thin shaft of the clamping shaft 11 to move downwards along with the upper template 15, when the clamping body 10 reaches a step shaft from the thin shaft of the clamping shaft 11, one part of one end, close to a stripper rod 23, of the clamping body 10 slides down to an annular groove 231 of the stripper rod 23, with the continuous downward movement of the upper template 15, one end of the clamping body 10 is arranged on the step shaft, the other end of the clamping body 10 is arranged in the annular groove 231 of the stripper rod 23, when one end of the clamping body 10 reaches a thick shaft of the clamping shaft 11, clamping the other end of the clamping body 10 is clamped in the annular groove 231 of the stripper rod 23, the upper template 15 and the stripper rod 23 are locked by the clamping body 10, moving downwards together to a slide block dead point, then moving upwards to the bottom of the stripper rod 23, the upper template 15 continues to ascend, one end of the clamping body 10 slides upwards in the annular groove 231 of the stripping rod 23, the other end of the clamping body 10 slides upwards in the rough axis of the clamping shaft 11, when one end of the clamping body 10 is about to reach the thin axis of the clamping shaft 11, the other end of the clamping body 10 completely leaves the annular groove 231 of the stripping rod 23, when one end of the clamping body 10 reaches the thin axis of the clamping shaft 11, the other end of the clamping body 10 is separated from the stripping rod 23, the upper template 15 is unlocked from the stripping rod 23, the stripping rod 23 ejects the blank out of the backward extrusion female die 25 at the moment, the upper template 15 continues to move upwards, the stripping rod 23 keeps the position at the moment, a manipulator is waited to clamp the blank, the upper template 15 moves upwards to the upper dead point of the sliding block, then the upper template 15 starts to work next time, the upper template starts to descend, the upper template 15 again starts to work at the set distance position.

As shown in fig. 2, the lower end of the clamping shaft 11 is a touch rod 37, the touch rod 37 is a screw thread telescopic rod, and is used together with the stripper rod limit bolt 35 for adjusting and setting the distance for locking and unlocking, the outer surface of the touch rod 37 is connected with a touch rod limit bolt 43 through screw threads, the distance between the touch rod 37 and the lower limit platform 39 can be adjusted through the touch rod limit bolt 43, and the touch rod 37 and the stripper rod 23 are synchronously adjusted.

The working process of the invention is as follows: starting a crank press, driving an upper template 15 to move downwards by the crank press, driving a clamping shaft 11 to move downwards by the upper template 15, stopping moving downwards by the clamping shaft 11 after a touch rod 37 at the bottom of the clamping shaft 11 is contacted with a lower limit table 39, driving a clamping body 10 on a thin shaft of the clamping shaft 11 to move downwards along with the upper template 15, when the clamping body 10 reaches a stepped shaft from the thin shaft of the clamping shaft 11, sliding one part of one end, close to a stripper rod 23, of the clamping body 10 to the annular groove 231 of the stripper rod 23, continuing moving downwards along with the upper template 15, driving one end of the clamping body 10 to be positioned on the stepped shaft and the other end to be positioned in the annular groove 231 of the stripper rod 23, when one end of the clamping body 10 reaches a thick shaft of the clamping shaft 11, clamping the other end of the clamping body 10 to be clamped in the annular groove 231 of the stripper rod 23, locking the upper template 15 and the stripper rod 23 by the clamping body 10, moving downwards together to a touch rod 37 at the bottom of the stripper rod 23 to be separated from the lower limit table 39, the upper template 15 continues to move upwards, one end of the clamping body 10 slides upwards in an annular groove 231 of the stripper rod 23, the other end slides upwards in a rough shaft of the clamping shaft 11, when one end of the clamping body 10 is about to reach a thin shaft of the clamping shaft 11, the other end of the clamping body 10 completely leaves the annular groove 231 of the stripper rod 23, when one end of the clamping body 10 reaches the thin shaft of the clamping shaft 11, the other end of the clamping body 10 is separated from the stripper rod 23, the upper template 15 is unlocked from the stripper rod 23, the stripper rod 23 pushes the blank out of the backward extrusion die 25, the upper template 15 drives the clamping shaft 11 to move upwards continuously, the stripper rod 23 keeps the current position, a manipulator clamps the blank, the upper template 15 moves upwards to an upper dead point of a sliding block, the upper template 15 starts to work next time and moves downwards, the upper template 15 moves downwards again to the set distance position, the upper template 15 clamps the stripper rod 23 and continues to move downwards along with the upper template 15, and the distance is repeated, the distance from the stripper rod limiting bolt 43 touching rod 37 to the lower limiting platform 39 and the The distance between the bolt 35 and the lower template 2 is matched, the touch rod 37 is synchronously adjusted with the stripper rod 23 and the rotating shaft 31, namely, the length between the rotating shaft 31 and the lower ejector rod seat 32, the distance between the stripper rod limit bolt 35 and the pull rod washer 36 and the distance between the touch rod limit bolt 43 at the bottom of the touch rod 37 and the lower limit table 39 are matched, one is adjusted, and the rest two are adjusted simultaneously.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims (4)

1. The bearing ring backward extrusion stripping position variable device comprises a rack of a crank press, a backward extrusion punch head fixed on an upper template and an upper template of the crank press, a female die arranged on a lower template and a lower template of the crank press, wherein a stripping rod is arranged below the female die, the lower end of the stripping rod is abutted against a swinging beam, one end of the swinging beam is hinged on the rack, and the other end of the swinging beam is connected with the lower end of the stripping rod.

2. The device for changing the position of the backward extrusion stripping of the bearing ring as claimed in claim 1, wherein the locking and unlocking mechanism is an upper mold plate fixing guide tube, the guide tube is sleeved with a fixing clamp holder support, two oppositely arranged clamp plates are hinged on the clamp holder support to form a clamp holder, a left clamp head of the clamp holder extends into the guide tube to be clamped and matched with or separated from the stripping rod, a right clamp head extends into a sliding sleeve on the right side of the support, a clamp shaft penetrates through the sliding sleeve, the clamp shaft is a step shaft with a thin upper part and a thick lower part, and the step surface is a conical surface.

3. The device for changing the backward extrusion stripping position of a bearing ring according to claim 1, wherein the lower end of the clamping shaft is a touch rod, and the touch rod is a threaded screw telescopic rod which is used together with a stripping rod adjusting bolt for adjusting and setting the distance between locking and unlocking.

4. The device for backward extrusion and stripping of bearing rings as claimed in claim 3, wherein the articulated shaft of the oscillating beam articulated on the frame is fixed on the sliding block of the guide rail pair, and a locking bolt is arranged between the sliding block and the guide rail.

Images