CN210412231U

CN210412231U - Pipe two-end necking processing machine tool

Info

Publication number: CN210412231U
Application number: CN201921434735.XU
Authority: CN
Inventors: 欧阳晓平; 郭远军; 郭幸钢
Original assignee: Yuanjun Heat Energy Power Technology Co ltd
Current assignee: Yuanjun Heat Energy Power Technology Co ltd
Priority date: 2019-08-31
Filing date: 2019-08-31
Publication date: 2020-04-28
Anticipated expiration: 2029-08-31

Abstract

The utility model provides a tubular product both ends throat machine tool, including the frame, be equipped with the guide rail in the frame, be equipped with the anchor clamps of centre gripping work piece on the guide rail, the anchor clamps both ends are equipped with the machining tool, are equipped with the shaping recess on the machining tool, be equipped with the balancing weight on the machining tool, the rotatory tubular product both ends after to the heating of drive arrangement drive machining tool are strikeed, are extruded and process and form the throat. The utility model discloses carry out synchronous processing to the work piece both ends, strike, the spinning forms the throat to the work piece both ends, the effectual throat processing of having solved heavy-calibre (radius > 50 mm), the effectual improvement to the machining efficiency and the improvement of precision of work piece, the work piece tip thickness of being convenient for simultaneously evenly increases, is convenient for improve work piece and outside part joint strength and the improvement of sealed effect, the saving of the energy of being convenient for and the wide application of this lathe.

Description

Pipe two-end necking processing machine tool

Technical Field

The utility model relates to a tubular product processing field, especially a tubular product both ends throat machine tool.

Background

With the progress of society and the increase of enterprise productivity, the productivity of enterprises is greatly promoted from large-scale machines to small-scale parts in the production activities of people in the mechanical production, particularly in the technical field of pipe processing, the social development is extremely rapid, and various pipe processing is continuously improved and updated.

In the prior art, the two ends of a pipe are processed by necking, most of the prior art adopts casting, spinning and other modes for processing, and CN201880810U discloses a pipe end bottleneck type necking die of the pipe, which is a hot spinning die consisting of a die disc, three pressing roller groups and a pipe mandrel rolling in the pipe; the center of the die disc supports the rolling type pipe core rod, three pressing roller groups with pressing rollers are uniformly arranged outside the pipe core rod on the die disc, and the pressing rollers are designed according to the length and the excircle size of the straight section of the tubular necking bottleneck; therefore, the processing of the bottleneck type pipe end necking is finished by pushing three forming press rollers and a pipe core rod supported on a die disc to the pipe end port in a hot spinning mode through the rotation of the pipe, the operation is simple and convenient, and the processing speed is high; the finished product can reach various indexes of technical requirements, the labor intensity can be reduced, the working efficiency is improved, and the product manufacturing cost is reduced.

CN103182457A discloses a process method for spin-sealing a pipe end, which mainly comprises the following steps: clamping and fixing, port heating, spinning and sealing, wherein a lathe is used for controlling a spinning wheel to perform axial feeding, radial feeding is manually controlled, necking and spinning are performed on the pipe, and the spinning wheel reciprocates according to a specified shape; when the tube is closed in the later stage by spinning, the concave edge surface of the spinning wheel extrudes the tube, and meanwhile, a certain pressure is applied to the sealing position of the tube in the axial direction to close the tube. The utility model discloses a simple processing method has solved the spinning of tubular product and has sealed the problem, and the spinning that is particularly suitable for the 30CrMnSi of minor diameter and other ferrous metal tubular products seals, and the tubular product atress sealed by the spinning is even, can adopt the large feed to process, and production efficiency is high.

The necking die and the spinning sealing method are time-consuming and labor-consuming in the processing process, the sealing effect of the necking end is not ideal, the energy is not saved favorably, and the necking die and the spinning sealing method are not suitable for processing the metal pipe with large caliber (the radius is more than 50 mm).

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned not enough of prior art, and providing a be convenient for energy saving, carry out high efficiency processing to big bore metal pipe both ends, sealed effect outstanding tubular product both ends throat machine tool.

The technical scheme of the utility model is that: the utility model provides a tubular product both ends throat machine tool, includes the frame, is equipped with the guide rail in the frame, is equipped with the anchor clamps of centre gripping work piece on the guide rail, and the anchor clamps both ends are equipped with the machining tool, are equipped with the shaping recess on the machining tool, be equipped with the balancing weight on the machining tool, drive arrangement drive machining tool is rotatory to strike, extrusion processing forms the throat at the tubular product both ends after the heating.

The advantage of this scheme lies in, the balancing weight passes through wire rope and is connected with the machining tool, add man-hour to the work piece, balancing weight free fall motion pulling machining tool moves toward work piece processing end, strike the work piece tip after the heating, drive arrangement includes driving motor and pneumatic cylinder, strike the after-treatment tool with work piece tip contact, the position of machining tool on the guide rail this moment locks, the driving rotation that the machining tool passes through driving motor, strike the after-treatment tool and carry out spinning processing to the both ends of work piece, receive the dual extrusion pressure degree that balancing weight and pneumatic cylinder stretch out simultaneously, the flexible of spinning in-process pneumatic cylinder indirectness can drive the machining tool and carry out indirectness's clash to the work piece tip, the work piece throat of being convenient for or the improvement of efficiency of sealing.

Preferably, the weight of the counterweight is 5-500 kg.

Preferably, the weight of the counterweight is 30-100 kg.

More preferably 50kg of the weight. According to the needs of processing different size dimensions work piece, can select the weight of changing the balancing weight, be convenient for improve the improvement of machining precision, efficiency and quality.

Further, the processing tool is a necking die, a forming groove matched with the shape of the necking is arranged in the necking die, and the front end of the groove is in a horn shape; the processing tool is installed on the guide rail through the die holder, and the bottom of the die holder is provided with a base which slides along the guide rail. When two ends of a workpiece are machined, the end part of the workpiece is inserted into the groove, and the front end of the groove is trumpet-shaped, so that the end part of the workpiece is convenient to collide and machine, and the workpiece is prevented from separating from the groove; the bottom of the groove is arc-shaped, and the end part of the workpiece is impacted and spun by a necking die, so that the end part of the workpiece is conveniently subjected to necking forming.

Further, the necking dies comprise a first necking die and a second necking die, and the first necking die and the second necking die move towards or away from each other.

Preferably, when processing work piece both ends, first throat mould and second throat mould strike and the spinning to work piece both ends simultaneously through the drive of balancing weight, are convenient for improve the improvement of work piece tip impact force degree and the improvement of machining efficiency.

Further, the guide rail is horizontally arranged, the first necking die is located at the right end, the second necking die is located at the left end, the two dies are pulled by the balancing weight to move relatively, and the driving device drives the necking dies to rotate.

Preferably, the balancing weight is hung at two ends of the guide rail through a steel wire rope, the balancing weight at the right end is connected with the second necking die, and the balancing weight at the left end is connected with the first necking die, so that impact processing is conveniently performed on two ends of a workpiece.

Further, the guide rail is arranged vertically, the first necking die is located at the upper end of the clamp, and the second necking die is located at the lower end of the clamp.

Preferably, the balancing weight sets up on the guide rail with the throat mould opposite face, be connected with first throat mould and move along the guide rail through wire rope, the balancing weight is not equipped with on the second throat mould, its lower extreme is equipped with the stopper supporting shoe, when adding man-hour to the work piece, the first throat mould of balancing weight pulling downstream, first throat mould combines self gravity to strike the work piece tip, effectively provide the impact force degree, when first throat mould and work piece contact, throat mould position locking, begin to carry out spinning processing to the work piece both ends, the pneumatic cylinder carries out indirect impact to the work piece both ends simultaneously, the effectual machining efficiency who improves to the work piece.

Furthermore, the second necking dies are fixedly arranged on the guide rails, and the first necking dies are driven by the balancing weights to move relative to the second necking dies.

Further, a hot melting drill is arranged on the necking die; the hot melting drill is driven to rotate by the driving motor, and the inner notch of the through hole of the workpiece is machined during machining.

Further, a heating device is further arranged on the machine frame.

The method for processing the workpiece by adopting the pipe two-end necking processing machine tool comprises the following steps:

firstly, clamping a workpiece on a clamp, and heating two ends of the workpiece by a heater until the two ends of the workpiece are plastically deformed;

secondly, starting necking dies at two ends of the clamp to rotate, wherein the rotating necking dies are driven by balancing weights to impact and spin-press two ends of the workpiece, and necking or sealing is formed at two ends of the workpiece;

thirdly, a hot melting drill on the die is adopted to carry out through hole processing on the workpiece with the reduced mouth or the sealed end in the second step, and an inner notch is formed at the reduced mouth or the sealed end of the workpiece;

and fourthly, tapping the inner notch of the workpiece after the inner notch is machined in the third step by adopting a screw tap on the necking die, returning the necking die after the tapping is finished, and withdrawing the workpiece to finish machining.

The utility model has the characteristics of as follows:

the utility model discloses carry out synchronous processing to the work piece both ends, strike, the spinning forms the throat to the work piece both ends, the effectual throat processing of having solved heavy-calibre (radius > 50 mm), the effectual improvement to the machining efficiency and the improvement of precision of work piece, the work piece tip thickness of being convenient for simultaneously evenly increases, is convenient for improve work piece and outside part joint strength and the improvement of sealed effect, the saving of the energy of being convenient for and the wide application of this lathe.

The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic view of a machine tool for reducing the two ends of a pipe;

FIG. 2 is a schematic view of a processing apparatus;

FIG. 3-is a side view of a machining device mount;

FIG. 4-is a sectional view of a necking die;

FIG. 5-is a cross-sectional view of another necking die;

FIG. 6 is a front view of another structure of a pipe necking machine;

FIG. 7 is a rear view of the pipe end necking machine in FIG. 6;

FIG. 8 is a view showing the arrangement of the wire rope in FIG. 7;

1-a frame, 2-a first guide rail, 3-a groove, 4-a first die holder, 5-a metal tube, 6-a clamp, 7-a mounting seat, 8-a heating device, 9-a second die holder, 10-a first driving motor, 11-a pulley, 12-a counterweight, 13-a steel wire rope, 14-a second guide rail, 15-a processing tool, 16-a second driving motor, 17-a necking die, 18-a hot-melting drill, 19-a gear, 20-a driving wheel, 21-a drill mounting seat, 22-a hydraulic cylinder, 23-a heating ring, 24-a bar gear, 25-a driving wheel, 26-a base, 27-a horn mouth, 28-a forming groove, 29-a drill, 30-a fixing frame, 31-a guide wheel, 32-limiting means.

Detailed Description

As shown in fig. 1-8: the utility model provides a tubular product both ends throat machine tool, includes frame 1, is equipped with first guide rail 2 in the frame 1, is equipped with the anchor clamps 6 of centre gripping work piece on the first guide rail 2, and anchor clamps pass through mount pad 7 to be installed on

first guide rail

2, and 6 both ends of anchor clamps are equipped with machining tool 15, are equipped with shaping recess 28 on the machining tool 15, are equipped with balancing weight 12 on the machining tool 15, and the rotatory tubular product both ends after the heating of drive arrangement drive machining tool are strikeed, extrusion process forms the throat.

The rack 1 is also provided with a heating device 8, the heating device 8 is a high-frequency induction heater, the high-frequency induction heater is provided with a heating ring 23, the power of the high-frequency induction heater is 50-800 kilowatts, and when the workpiece is heated, the heating ring 23 is sleeved at the end part of the workpiece or extends into the inner cavity of the workpiece to heat the workpiece, so that the workpiece achieves plastic deformation.

The weight of the balancing weight 12 is 5-500 kg. Preferably, the weight 12 weighs 30-100 kg. More preferably 50kg of the weight 12. According to the needs of processing the work piece of different size dimensions, can select or change the weight of balancing weight 12, be convenient for improve the improvement of machining precision, efficiency and quality.

The balancing weight 12 is connected with a processing tool 15 through a steel wire rope 13, when a workpiece is processed, the balancing weight 12 freely falls to move to pull the processing tool 15 to move to a processing end of the workpiece, the end part of the heated workpiece is impacted, the driving device comprises a driving motor and a hydraulic cylinder 22, the driving motor is a servo motor, which is siemens 1FK7083-5AH71-1AA2, the impact post-processing tool 15 is brought into contact with the end of the workpiece, at which time the position of the processing tool 15 on the first guide rail 2 is locked, the processing tool 15 is rotated by the driving of the driving motor, the impact post-processing tool 15 performs spinning processing on both ends of the workpiece, meanwhile, due to the double extrusion pressure degree of the extension of the balancing weight 12 and the hydraulic cylinder 22, the indirect extension of the hydraulic cylinder 22 in the spinning process can drive the machining tool 15 to indirectly collide the end part of the workpiece, so that the necking or sealing efficiency of the workpiece is improved conveniently.

The processing tool 15 is a necking die 17, the necking die 17 is arranged on the guide rail through a die base and moves along the first guide rail 2, the first guide rail 2 is provided with a groove 3, the bottom of the die base is provided with a base 26, the base 26 is provided with a bulge matched with the groove 3, the base 26 slides in the first guide rail 2 through the pulling of the balancing weight 12, and the die base can move on the first guide rail 2 stably; still be equipped with the slider on the die holder, the slider removes along being equipped with second guide rail 14 on the die holder, be equipped with bar gear 24 on the second guide rail 14, the slider passes through the drive wheel 25 drive of first driving motor 10, the slider passes through pneumatic cylinder 22 and is connected with throat mould 17, one side of throat mould 17 is equipped with heating device 8, the opposite side is equipped with drill bit mount pad 21, be equipped with second driving motor 16 on the throat mould 17, be equipped with action wheel 20 on the second driving motor 16, action wheel 20 drives the gear 19 rotation on the throat mould 17, thereby it is rotatory to drive throat mould 17 and drill bit mount pad 21 simultaneously, be convenient for process tubular metal 5.

Still be equipped with hot melt on the drill bit mount pad 21 and bore 18, hot melt bores 18 rotatory through the drive of second driving motor 16, second driving motor 16 is servo motor, add the central axis that hot melt bore 18 aimed at the work piece during processing, the drive through pneumatic cylinder 22 and/or the pulling force of balancing weight 12 carry out the through-hole to the tip of work piece, make the work piece tip form interior notch, be equipped with the screw tap on the throat mould 17, a through-hole for to the work piece is tapped, be convenient for be connected of work piece both ends and external component, improve its joint strength and sealed effect.

A molding groove 28 matched with the shape of the necking is arranged in the necking die 17, and the front end of the groove is in a bell mouth 27 shape; when two ends of a workpiece are machined, the end part of the workpiece is inserted into the groove, and the front end of the groove is trumpet-shaped, so that the end part of the workpiece is convenient to collide and machine, and the workpiece is prevented from separating from the groove; the bottom of the groove is arc-shaped, and the end part of the workpiece is impacted and spun by the necking die 17, so that the end part of the workpiece is conveniently subjected to necking forming.

Preferably, the drill 29 is arranged in the middle of the bottom of the groove of the necking die 17, so that the necking and the through hole can be integrally formed when a workpiece is machined, and the machining efficiency can be improved.

The die base comprises a first die base 4 and a second die base 9, the necking die 17 comprises a first necking die 17 and a second necking die 17, the corresponding first die base 4 is provided with the first necking die 17, the second die base 9 is provided with the second necking die 17, and the first necking die 17 and the second necking die 17 move in opposite directions or in the opposite directions. Preferably, when processing is carried out to work piece both ends, first throat mould 17 and second throat mould 17 strike and the spinning is carried out to work piece both ends simultaneously through the drive of balancing weight 12, are convenient for improve the improvement of work piece tip impact strength and the improvement of machining efficiency.

In another embodiment, the first guide rail 2 is horizontally arranged, the first necking die 17 is positioned at the right end, the second necking die 17 is positioned at the left end, the counterweight block 12 pulls the two dies to move relatively, and the driving device drives the necking die 17 to rotate.

Preferably, the balancing weight 12 is hung at two ends of the first guide rail 2 through a steel wire rope 13, pulleys 11 are arranged at two ends of the first guide rail 2, the steel wire rope 13 penetrates through the pulleys 11, the balancing weight 12 at the right end is connected with the second die base 9 through the steel wire rope 13, and the balancing weight 12 at the left end is connected with the first die base 4 through the steel wire rope 13, so that impact processing is performed on two ends of a workpiece conveniently.

In another embodiment, the first guide rail 2 is vertically disposed, the first guide rail 2 is disposed on the frame 1 through the fixing frame 30, the clamp 6 is vertically disposed on the first guide rail 2, the first necking die 17 is located at the upper end of the clamp 6, and the second necking die 17 is located at the lower end of the clamp 6.

Preferably, the counterweight block 12 is arranged on the first guide rail 2 opposite to the necking die 17, is connected with the first necking die 17 through a steel wire rope 13 and moves along the first guide rail 2, the counterweight block 12 is not arranged on the second necking die 17, the lower end of the second necking die is provided with a limiting block supporting block, when a workpiece is machined, the workpiece is clamped on the clamp 6, the clamp 6 moves up and down along the guide rail, and the position of the clamp 6 is adjusted, so that the lower end of the workpiece is in contact with the second necking die 17; counterweight 12 passes through the first throat mould 17 downstream of wire rope pulling, wire rope passes pulley and leading wheel 31 and connects first mould seat, first mould seat combines self gravity to strike the work piece tip, impact force is effectively provided, when first throat mould 17 and work piece upper end contact, throat mould 17 position locking, begin to carry out spinning processing to the work piece both ends, pneumatic cylinder 22 carries out indirect impact to the work piece both ends simultaneously, the effectual machining efficiency to the work piece that has improved, the restriction of limited supporting shoe after assaulting, anchor clamps 6 and throat mould 17 kick-back thereof, play certain cushioning effect and be convenient for reduce the damage to the mould.

More optionally, the second necking die 17 is fixed on the guide rail through a bolt or welded, the first necking die 17 is driven by the counterweight block 12 to move towards the second necking die 17, the two ends of the workpiece are subjected to impact processing by the self gravity of the first necking die 17 and the tension of the counterweight block 12, the end part of the workpiece is extruded by strong force after impact, the pipe wall of the workpiece is extruded inwards along the arc of the die groove, so that the workpiece begins to be necked, the second necking die 17 is fixedly installed at the lower end of the guide rail, so that the stress uniformity of the workpiece is improved, when the first necking die 17 impacts the upper end of the workpiece stably, the position of the first necking die 17 is limited by the limiting device 32, at the moment, the hydraulic cylinder 22 is started to extend out to extrude and rotate the workpiece, the hydraulic cylinder 22 can indirectly impact the workpiece in the spinning process, and the necking processing efficiency of the end part of the workpiece is improved.

The method for processing the workpiece by adopting the pipe two-end necking processing machine tool is characterized in that the workpiece is a metal pipe 5, the length of the metal pipe 5 is 900mm, the thickness of the pipe wall is 4.5mm, and the radius is 70 mm; the method comprises the following processing procedures:

firstly, clamping a workpiece on a clamp 6, enabling two ends of a metal pipe 5 to equally extend out of the clamp 6, and heating the two ends of the workpiece to 700-1800 ℃ by using a heater so that the two ends of the workpiece can be plastically deformed or heated until obvious flame appears;

secondly, starting necking dies 17 at two ends of the clamp 6 to rotate, driving the rotating necking dies 17 to freely fall through a balancing weight 12, moving towards the workpiece processing end heated in the first step, impacting two ends of the workpiece with impact force of 5-1000kg, and performing double extrusion on the end part of the workpiece through the driving of a hydraulic cylinder 22 and the pulling force of the balancing weight 12, so that the end part of the workpiece can be conveniently spun, and necking or sealing can be formed at two ends of the workpiece;

thirdly, a hot melting drill 18 on the die is adopted to carry out through hole processing on the workpiece with the reduced mouth or the sealed end in the second step, and an inner notch is formed at the reduced mouth or the sealed end of the workpiece;

and fourthly, tapping the inner notch of the workpiece after the inner notch processing in the third step is finished by adopting a screw tap on the necking die 17, returning the necking die 17 after the tapping processing is finished, and withdrawing the workpiece to finish the processing.

Example 2

The method for processing the workpiece by adopting the pipe two-end necking processing machine tool is characterized in that the workpiece is a metal pipe 5, the length of the metal pipe 5 is 120mm, the thickness of the pipe wall is 5mm, and the radius is 75 mm; the method comprises the following processing procedures:

firstly, clamping a workpiece on a clamp 6, enabling two ends of a metal pipe 5 to equally extend out of the clamp 6, heating the two ends of the workpiece to 850 ℃ by using a high-frequency sensor, enabling the two ends of the workpiece to be plastically deformed or heating until obvious flames appear, and withdrawing from heating after heating is finished;

secondly, starting the necking dies 17 at the two ends of the clamp 6 to rotate at the rotation speed of 600 + 1800 r/min; the rotary necking die 17 is driven by a free falling body of an 80kg balancing weight 12, moves to the processing end of the workpiece heated in the first step, impacts the two ends of the workpiece, the impact force is 200kg, the end of the workpiece is subjected to double extrusion through the driving of a hydraulic cylinder 22 and the pulling force of the 80kg balancing weight 12, the hydraulic cylinder 22 indirectly impacts the end of the workpiece in the extrusion process, the impact force is 80kg, the end of the workpiece is conveniently subjected to spinning processing, and necking or sealing is formed at the two ends of the workpiece;

thirdly, a hot melting drill 18 on the die is adopted to carry out through hole processing on the workpiece with the reduced mouth or the sealed end in the second step, and the reduced mouth or the sealed end of the workpiece is processed to form an inner notch by utilizing the friction heat between the hot melting drill 18 and the workpiece and the waste heat of the end part of the workpiece in the processing process;

The utility model can synchronously process the two ends of the workpiece, impact the two ends of the workpiece and form a necking by spinning, effectively solves the necking processing of large caliber (radius is more than 50 mm), can also process the necking processing of the workpiece with the caliber of 5mm less than 50mm of the metal pipe, and only needs to change the weight of the balancing weight 12; the processing efficiency and the precision of the workpiece are effectively improved, the end part thickness of the workpiece is uniformly increased, the connection strength between the workpiece and an external part and the sealing effect are improved, the energy is saved, and the machine tool is widely applied.

The preferred embodiments of the present invention have been described in detail above, but it is apparent that the present invention is not limited to the above embodiments. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple equivalent variant, and these equivalent variants all belong to the utility model discloses a protection scope. In addition, it should be noted that the technical features described in the above embodiments may be separately and independently combined as long as they are within the technical concept of the present invention.

Claims

1. The utility model provides a tubular product both ends throat machine tool, includes the frame, is equipped with the guide rail in the frame, is equipped with the anchor clamps of centre gripping work piece on the guide rail, and the anchor clamps both ends are equipped with the machining tool, are equipped with shaping recess, its characterized in that on the machining tool: the machining tool is provided with a balancing weight, and the driving device drives the machining tool to rotate so as to impact and extrude the two ends of the heated pipe to form a necking.

2. The machine tool for processing two-end necking of a pipe according to claim 1, wherein: the balancing weight is connected with the processing tool through a steel wire rope, and the weight of the balancing weight is 5-500 kg.

3. The machine tool for processing two-end necking of a pipe according to claim 2, wherein: the processing tool is a necking die, a forming groove matched with the necking shape is arranged in the necking die, and the front end of the groove is in a horn mouth shape.

4. The machine tool for processing two-end necking of a pipe according to claim 3, wherein: the necking dies comprise a first necking die and a second necking die, and the first necking die and the second necking die move oppositely or back to back.

5. The machine tool for processing two-end necking of a pipe according to claim 3, wherein: the guide rail is horizontally arranged, the first necking die is located at the right end, the second necking die is located at the left end, the two dies are pulled by the balancing weight to move relatively, and the driving device drives the necking dies to rotate.

6. The machine tool for processing two-end necking of a pipe according to claim 4, wherein: the guide rail is vertically arranged, the first necking die is located at the upper end of the clamp, and the second necking die is located at the lower end of the clamp.

7. The machine tool for necking two ends of a pipe according to claim 4 or 6, wherein: the second necking dies are fixedly arranged on the guide rails, and the first necking dies are driven by the balancing weights to move opposite to the second necking dies.

8. The machine tool for processing two-end necking of a pipe according to claim 3, wherein: and the necking die is provided with a hot melting drill.

9. A machine tool for necking both ends of a pipe according to any one of claims 1 to 3, wherein: the frame is also provided with a heating device.