CN112191729B - Core-free conical piece spinning forming machine - Google Patents

Abstract

The invention relates to a coreless mold conical part spinning forming machine. A transverse direct current stepping motor is connected with a transverse screw slide rail through a coupling, one end is fixed on the slider of the longitudinal screw slide rail, and the other end is connected with on the slider of the fixed rail. The rotary wheel and the rotary wheel arm are fixedly connected to the sliding block of the horizontal screw slide rail, and the rotary wheel arm is connected with displacement and speed sensors. The DC geared motor is connected to the core mold through a coupling. The bolt screw is connected with the handwheel and passes through the bearing support with threaded holes, and the bearing support can slide axially in the L-shaped groove. The drive shaft passes through the annular pressure sensor and is connected to the bearing support while the blank is clamped between the mandrel and the drive shaft. The computer receives the measurement data signal of each sensor, and outputs the control signal to each executive to realize the spin forming of the conical part under the condition of the workpiece with different cone angle and outer contour, and draw out the displacement and speed change curves and graphics.

Description

Coreless Die Cone Spinning Machine

technical field

The invention relates to a material plastic forming equipment in mechanical engineering, in particular to a spinning forming machine for conical parts without a core die.

Background technique

Spinning is an advanced metal forming technology. It has the characteristics of low material loss, simple process and easy production. It is widely used in reaction kettles, artillery shells and cookware funnels. An important area of advanced manufacturing technology. At present, when the conical parts on the market are spinning, it is necessary to replace different core molds according to the change of the taper angle of the target part, which will increase the production cost and operating procedures, resulting in low production efficiency.

Chinese Patent Bulletin No. CN102554002B discloses an ultra-long thin-walled pipe without core die CNC spinning equipment. The equipment drives the flow of the tubular blank through the rotating wheel, causing the thinning and accumulation of materials in different parts to realize cones of different angles. Therefore, the equipment can only realize the forming of conical parts with a small angle range, which limits the application of its larger cone angle range. At the same time, the equipment is aimed at tubular blanks with grooves, and if it is a round sheet blank, it cannot be formed.

Chinese Patent Announcement No. CN110312579A, relates to a spinning forming method and equipment, mainly aimed at the spinning wheel forming of wheels. In this equipment, by arranging inner and outer rollers on both sides of the workpiece, and through the radial and axial displacement of the double rollers, workpieces with different inner and outer contours can almost be formed. However, when the inner diameter of the original workpiece is too small, the inner roller cannot be installed inside the workpiece. Therefore the device is limited to workpieces with a specific contour size.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to propose a coreless conical part spinning machine, which can realize the arc blank in the range of 0° to 90° under the condition of no core mold. Conical parts at any angle are formed; at the same time, data recording and collection of three groups of factors such as displacement, speed, and pressure are completed, and corresponding curves and graphs are given.

To achieve the above object, the technical scheme adopted by the present invention is as follows:

A coreless conical part spinning forming machine is composed of a rotary wheel motion system, a core mold power system, a space support system and a central control system. The rotary wheel motion system is composed of a lateral displacement sensor, a longitudinal displacement sensor, a lateral speed Sensor, longitudinal speed sensor, rotary wheel, left support table, longitudinal screw slide rail, longitudinal coupling, longitudinal stepper motor support base, longitudinal stepper motor, rotary wheel support slide, lateral screw slide rail, lateral coupling A shaft, a lateral stepping motor, a slide rail, and a sliding block are formed. The longitudinal stepping motor is connected to the lead screw in the longitudinal lead screw slide rail through a longitudinal coupling, and is fixedly connected to the left support table of the support system; The lateral stepping motor is connected with the lead screw in the lateral lead screw slide rail through a lateral coupling, one end of the lateral lead screw slide rail is fixedly connected to the slider, and the other end is fixedly connected to the slide of the longitudinal lead screw slide rail. The sliding block is slidably connected to the sliding rail fixed on the sliding rail rack, the slider can slide longitudinally along the sliding rail, and the sliding rail rack is fixedly connected to the right support table of the support system through the support column ; The rotary wheel is fixedly connected to the slider in the horizontal lead screw slide rail through the rotary wheel support slide seat, and the lateral displacement sensor, longitudinal displacement sensor, lateral speed sensor and longitudinal speed sensor are respectively installed on the rotary wheel support slide. The computer in the central control system sends pulse signals to the horizontal stepper motor and the vertical stepper motor through the motion control board, and the horizontal stepper motor and the vertical stepper motor respectively drive the horizontal screw slide rail and the vertical screw The slider in the bar slide rail drives the rotary wheel to support the sliding seat to realize the control of the space motion trajectory of the rotary wheel; the core mold power system consists of a DC gear motor, a DC motor coupling, a radial bearing, a core mold, Round blank, drive shaft, annular pressure sensor, bolt, bearing seat, hand wheel, bolt screw, L-shaped chute, platform support block, processing platform, PLC; connected, the mandrel is supported by radial bearings, the transmission shaft is radially fixed on the bearing seat after passing through the annular pressure sensor, the bearing seat is placed in the L-shaped groove fixed on the processing platform, and the bolt screw passes through A bearing seat with internal threaded holes is connected with the handwheel; an annular pressure sensor is installed on the bearing seat, and the annular pressure sensor is connected with the data acquisition module. Through the rotation of the handwheel, the bolt screw drives the bearing seat in L. The groove slides forward to complete the clamping of the blank in the axial direction. The computer sends a digital pulse signal to the DC gear motor through the PLC. The DC gear motor drives the core mold and the circular blank drive shaft to rotate to realize the spinning of the conical parts. take shape.

The space support system is composed of a left support table, a slide rail rack, a support column, a right support table, an integral rack, a platform support block, and a processing platform. The two sides of the support column are provided with reverse threads, and both ends are fixedly connected to slide. The rail stand and the right support stand, the left support stand and the right support stand are fixed on the overall stand by bolts; the platform support block is respectively connected and fixed with the processing platform and the integral stand by bolts.

The computer of the central control system receives the measurement data signals from the lateral displacement sensor, the longitudinal displacement sensor, the lateral speed sensor and the longitudinal speed sensor respectively, and outputs the control signal to the rotary wheel motion system and the core mold power after comparing and calculating with the set value. The system realizes the spinning forming of circular arc blanks under the conditions of different cone angle and outer contour and topography target workpieces, and at the same time completes the data recording and collection of displacement, speed and pressure, and provides corresponding curves and graphics.

The size of the circular blank sample formed by the conical piece is diameter≤45mm and thickness≤1.5mm.

Rubber gaskets are attached on both sides of the annular pressure sensor to prevent the transmission shaft or the radial bearing support from scratching its surface circuit when the blank is axially clamped.

The surface of the rotating wheel and the surface of the blank are sprayed with lubricant to prevent the blank from being unevenly stressed during spinning.

The beneficial effects of the present invention are:

The spinning machine can realize the formation of conical parts of arc blanks at any angle in the range of 0° to 90° under the condition of no core die. At the same time, the data recording and collection of three groups of factors such as displacement, speed and pressure are completed, and corresponding curves and graphs are given. In the invention, the transverse DC stepping motor is connected with the transverse screw slide rail through the coupling, one end is fixed on the slider of the longitudinal screw slide rail, and the other end is connected with the slide block of the fixed slide rail. The rotary wheel and the rotary wheel arm are fixedly connected to the sliding block of the horizontal screw slide rail, and the rotary wheel arm is connected with displacement and speed sensors. The DC geared motor is connected with the mandrel through the coupling, and the mandrel is radially fixed on the bearing. The bolt screw is connected with the handwheel and passes through the bearing support with threaded holes, and the bearing support can slide axially in the L-shaped groove. The drive shaft passes through the annular pressure sensor and is connected to the bearing support while the blank is clamped between the mandrel and the drive shaft. All the sensors are connected with the central computer, and the central computer sends out instructions to control the rotation speed of the horizontal stepping motor and the vertical stepping motor, and the running speed of the DC deceleration motor. At the same time, the data acquisition and processing system are connected to record and display the changes of the outer surface profile of the arc blank.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the overall structure of the coreless conical part spinning machine of the present invention;

Fig. 2 is a schematic diagram of the structure of the rotating wheel part of the coreless conical part spinning forming machine of the present invention;

Fig. 3 is the main shaft platform structure schematic diagram of the coreless die cone part spinning forming machine of the present invention;

In the figure: Transverse displacement sensor 1, longitudinal displacement sensor 2, transverse speed sensor 3, longitudinal speed sensor 4, rotary wheel 5, left support table 6, longitudinal screw slide rail 7, longitudinal coupling 8, longitudinal stepper motor support Seat 9, longitudinal stepping motor 10, rotary wheel supporting slide 11, lateral screw slide rail 12, lateral coupling 13, lateral stepping motor 14, slide rail 15, slider 16, slide rail stand 17, support column 18. Right support table 19, overall stand 20, DC gear motor 21, DC motor coupling 22, radial bearing 23, core mold 24, circular blank 25, transmission shaft 26, annular pressure sensor 27, bolt 28, bearing Seat 29, hand wheel 30, bolt screw 31, L-shaped chute 32, platform support block 33, processing platform 34, PLC35, motion control board 36, data acquisition module 37, computer 38, rotary wheel motion system 40, core Die power system 41 .

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

As shown in Figures 1 to 3, a coreless conical part spinning machine is composed of a rotary wheel motion system 40, a core die power system 41, a space support system and a central control system. The whole frame 20 is connected to the rotary wheel motion system 40 and the core mold power system 41 through the space support system.

The rotary wheel motion system 40 consists of a lateral displacement sensor 1, a longitudinal displacement sensor 2, a lateral speed sensor 3, a longitudinal speed sensor 4, a rotary wheel 5, a left support table 6, a longitudinal screw slide rail 7, a longitudinal coupling 8, a longitudinal step The motor support base 9 , the vertical step motor 10 , the rotary wheel support slide 11 , the lateral screw slide rail 12 , the lateral coupling 13 , the lateral stepping motor 14 , the slide rail 15 , and the slider 16 are constituted. The longitudinal stepper motor 10 is connected with the lead screw in the longitudinal lead screw slide rail 7 through the longitudinal coupling 8, and is fixedly connected to the left support platform 6 of the support system through bolts. The lateral stepping motor 14 is connected with the lateral screw in the lateral screw slide rail 12 through the lateral coupling 13, one end of the lateral screw slide rail 12 is connected with the slider of the longitudinal screw slide rail 7, and the other end is passed through the lateral stepping The motor 14 is connected to the sliding block 16 of the sliding rail 15 on the sliding rail frame 7 , the sliding block 16 can slide longitudinally along the sliding rail 15 , and the sliding rail 15 is fixedly connected to the sliding rail frame 17 . The slide rail rack 17 is fixedly connected to the right support platform 19 of the support system through the support column 18 . The rotary wheel 5 is fixedly connected to the rotary wheel supporting sliding seat 11 by bolts, and the rotary wheel supporting sliding seat 11 is fixedly connected to the slider in the horizontal wire screw slide rail 12 . The transverse displacement sensor 1, the longitudinal displacement sensor 2, the transverse speed sensor 3, and the longitudinal speed sensor 4 are respectively installed on the rotating wheel support arms.

The computer sends pulse signals to the horizontal stepping motor 14 and the vertical stepping motor 10 through the motion control board 36, and the horizontal stepping motor 14 and the vertical stepping motor 10 drive the horizontal screw rail 12 and the vertical screw rail 7 respectively. The sliding block in the middle, and then drive the rotary wheel supporting slide 11 to move, so as to realize the control of the space movement trajectory of the rotary wheel 5 .

The core mold power system 41 consists of a DC gear motor 21, a DC motor coupling 22, a radial bearing 23, a core mold 24, a circular blank 25, a transmission shaft 26, an annular pressure sensor 27, a bolt 28, a bearing seat 29, a hand wheel 30. Bolt screw 31, L-shaped chute 32, platform support block 33, processing platform 34, PLC35. The DC gear motor 21 is connected with the core mold 24 through the coupling 22 , and the core mold 24 is supported by the radial bearing 23 . The transmission shaft 26 passes through the annular pressure sensor 27 and is radially fixed on the bearing seat 29 . The bearing seat 29 is placed in the L-shaped groove 32 fixed on the processing platform 34 , and the bolt lead screw 31 passes through the bearing seat 29 with internal threaded holes and is connected with the hand wheel 30 . An annular pressure sensor 27 is mounted on the bearing seat 29 , and the annular pressure sensor 27 is connected with the data acquisition module 37 . Through the rotation of the handwheel 30 , the bolt screw 31 drives the bearing seat 29 to slide forward in the L-shaped groove 32 to complete the clamping of the blank 25 in the axial direction. The computer drives the DC deceleration motor 21 to rotate through the PLC37, and then drives the core mold 24 and the circular blank 25 to drive the shaft 26 to rotate. The size of the circular blank sample 25 for forming the conical part is ≤45mm in diameter and ≤1.5mm in thickness.

The space support system consists of a left support table 6 , a slide rail frame table 17 , a support column 18 , a right support table 19 , an integral frame table 20 , a platform support block 33 , and a processing platform 34 . The two sides of the support column 18 are provided with reverse threads, which are fixedly connected to the slide rail rack 17 and the right support table 19 . The platform support block 33 is respectively connected and fixed with the processing platform 34 and the overall stand 20 through bolts.

The computer 38 of the central control system receives the measurement data signals sent by the lateral displacement sensor 1, the longitudinal displacement sensor 2, the lateral speed sensor 3, and the longitudinal speed sensor 4 respectively, and outputs the control signal to the rotary motion system after comparing and calculating with the set value. The core die power system realizes the spinning forming of circular arc blanks under the conditions of the target workpiece with different cone angles and outer contours. At the same time, the data recording and collection of three groups of factors such as displacement, speed and pressure are completed, and corresponding curves and graphs are given.

The central control system consists of a computer 38, all sensors (pressure, displacement, velocity), component control systems (displacement system, velocity system, pressure system) and data and image processing software. The central control system sends the measurement data to the computer in real time through the sensor, the computer compares the set value, gives various instructions to the component control system, realizes the spinning and forming of conical parts with different angles, and feeds back the results to the central control system. The control system then receives various feedback data, and through the data and image processing software, gives the transverse displacement, longitudinal displacement, transverse speed, longitudinal speed, axial pressure of the blank, and the speed change curve of the DC gear motor when the blank is spinning. .

Before the whole equipment works, firstly, the axial clamping pressure required for the initial blank 25 and the abscissa and ordinate parameters of the initial position of the rotary wheel are set on the computer 38 . Next, the handwheel 30 drives the bolt screw 31 to rotate, and the bolt screw 31 sends the bearing seat 29 to a predetermined position, and clamps the circular blank 25 between the core mold 24 and the transmission shaft 26 . The axial pressure value measured by the annular pressure sensor 27 is compared with the preset value to determine whether the blank is clamped in the axial direction. Then, the computer sends pulses to the horizontal stepping motor 14 and the vertical stepping motor 10 through the motion control board 36, and the two stepping motors drive the horizontal screw slide rail 12 and the vertical screw slide rail 7, and then drive the rotary wheel support As for the sliding seat 11 , since the rotary wheel 5 is fixed on the rotary wheel supporting sliding seat 11 by bolts, the rotary wheel 5 can be controlled to gradually approach the circular blank 25 . Through the real-time measurement of the distance between the rotary wheel support arm and the processing platform 34 by the longitudinal displacement sensor 2 and the lateral distance between the rotary wheel support arm and the left support table 6 measured by the lateral displacement sensor 1 in real time, the computer completes the initial abscissa and ordinate of the rotary wheel. 's correction. Finally, according to the contour line of the outer surface of the forming target part, the required horizontal displacement, vertical displacement, horizontal speed, vertical speed and speed parameters of the DC gear motor are set on the computer 38. The computer 38 drives the DC deceleration motor 21 through the PLC 35 to realize the rotation of the arc sheet blank 25 , and simultaneously drives the transverse stepping motor 14 and the longitudinal stepping motor 10 , and then drives the rotary wheel 5 to realize the plastic forming of the arc blank 25 . At the same time, the sensor collects the abscissa and ordinate data of the rotary wheel 5 in real time, forms the actual stroke curve of the rotary wheel 5 on the computer 38, and compares it with the outer surface contour curve of the target part to adjust the lateral speed or longitudinal direction of the feedback rotary wheel 5. speed.

Claims (4)

1. A spinning forming machine for conical parts without core mould is composed of spinning wheel moving system, core mould power system, space supporting system and central control system. The method is characterized in that: the rotary wheel motion system is composed of a transverse displacement sensor, a longitudinal displacement sensor, a transverse speed sensor, a longitudinal speed sensor, a rotary wheel, a left support table, a longitudinal lead screw slide rail, a longitudinal coupler, a longitudinal stepping motor support seat, a longitudinal stepping motor, a rotary wheel support slide seat, a transverse lead screw slide rail, a transverse coupler, a transverse stepping motor, a slide rail and a slide block;

the longitudinal stepping motor is connected with a screw rod in the longitudinal screw rod slide rail through a longitudinal coupler and is fixedly connected to a left support platform of the support system; the transverse stepping motor is connected with a screw rod in a transverse screw rod slide rail through a transverse coupler; one end of the transverse lead screw slide rail is connected with a slide block of the longitudinal lead screw slide rail, the other end of the transverse lead screw slide rail is connected with a slide block of the slide rail on a slide rail stand through a transverse stepping motor, the slide block can longitudinally slide along the slide rail, and the slide rail stand is fixedly connected to a right support table of the support system through a support column; the rotary wheel is fixedly connected to a sliding block in the transverse lead screw sliding rail through a rotary wheel supporting sliding seat, and the transverse displacement sensor, the longitudinal displacement sensor, the transverse speed sensor and the longitudinal speed sensor are respectively arranged on the rotary wheel supporting sliding seat; a computer in the central control system sends pulse signals to a transverse stepping motor and a longitudinal stepping motor through a motion control board card, and the transverse stepping motor and the longitudinal stepping motor respectively drive sliding blocks in a transverse lead screw sliding rail and a longitudinal lead screw sliding rail to further drive a spinning wheel supporting sliding seat so as to realize the control of the space motion track of the spinning wheel; the core mold power system comprises a direct current speed reduction motor, a direct current speed reduction motor coupler, a radial bearing, a core mold, a round blank, a transmission shaft, an annular pressure sensor, a bolt, a bearing seat, a hand wheel, a bolt lead screw, an L-shaped chute, a platform supporting block, a processing platform and a PLC; the direct-current speed reduction motor is connected with the core die through a coupler, the core die is supported by a radial bearing, the transmission shaft penetrates through the annular pressure sensor and then is radially fixed on a bearing seat, the bearing seat is arranged in an L-shaped groove on the processing platform, and a bolt lead screw penetrates through the bearing seat with an internal threaded hole and is connected with a hand wheel; the computer controls the direct current speed reducing motor through the PLC, and then drives the core mold and the round blank transmission shaft to rotate, so that the spinning forming of the conical piece is realized;

the space supporting system comprises a left supporting table, a slide rail stand, a supporting column, a right supporting table, an integral stand, a platform supporting block and a processing platform, wherein reverse threads are arranged on two sides of the supporting column, the slide rail stand and the right supporting table are fixedly connected with two ends of the supporting column, and the left supporting table and the right supporting table are fixed on the integral stand through bolts; the platform supporting block is respectively connected and fixed with the processing platform and the integral stand through bolts;

a computer in the central control system drives a direct current speed reduction motor to drive a blank to rotate through a PLC (programmable logic controller), and an annular pressure sensor acquires pressure in blank forming in real time; the computer drives a stepping motor to drive a rotary wheel to advance through a motion control board card; meanwhile, the computer receives speed and displacement data signals sent by the transverse displacement sensor, the longitudinal displacement sensor, the transverse speed sensor and the longitudinal speed sensor respectively, the actual motion track of the rotary wheel is compared with the preset blank forming profile in the computer, the actual motion track of the rotary wheel is adjusted in real time, the rotary press forming of conical parts with different cone angles is completed, meanwhile, the recording and the acquisition of displacement, speed and pressure data are completed, and corresponding curves and graphs are given.

2. The mandrel-less taper spinning forming machine of claim 1, wherein: the size of the round blank sample formed by the conical piece is less than or equal to 45mm in diameter and less than or equal to 1.5mm in thickness.

3. The mandrel-less taper spinning forming machine of claim 1, wherein: rubber gaskets are pasted on two sides of the annular pressure sensor, so that when a blank is axially clamped, a transmission shaft or a radial bearing support is prevented from scratching a surface circuit of the blank.

4. The mandrel-less taper spinning forming machine of claim 1, wherein: and the surfaces of the spinning wheel and the blank are sprayed with lubricant, so that the blank is prevented from being stressed unevenly in the spinning forming process.

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