CN105855446A - Material ejecting mechanism of cold header - Google Patents
Material ejecting mechanism of cold header Download PDFInfo
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- CN105855446A CN105855446A CN201610337776.1A CN201610337776A CN105855446A CN 105855446 A CN105855446 A CN 105855446A CN 201610337776 A CN201610337776 A CN 201610337776A CN 105855446 A CN105855446 A CN 105855446A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
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Abstract
本发明提供一种冷镦机顶料机构，其包括安装在冷镦机上的伺服直线电机装置、直线电机液压升降柱装置、液压减震装置、带轮和V型带，伺服直线电机装置包括伺服电机，服电机驱动带轮和V型带，伺服电机、带轮和V型带组成的传动机构完成送料切料动作，送至冲孔工位进行成形，成形后镦压力依然存在作用于液压减震装置，同时伺服直线电机装置发出的顶料动作信号，让直线电机液压升降柱装置执行顶料动作，完成顶料动作后，退出顶料动作信号通过伺服直线电机装置传给伺服电机，伺服电机通过调整转动速度和转动角度，控制直线电机液压升降柱装置来执行退出顶料动作。本发明结构变紧凑，防止了冷镦机由于冷镦力大导致机身撕裂等特点。
The invention provides a cold heading machine jacking mechanism, which includes a servo linear motor device installed on the cold heading machine, a linear motor hydraulic lifting column device, a hydraulic shock absorber, a pulley and a V-belt, the servo linear motor device includes a servo The motor, the servo motor drive the pulley and V-belt, the transmission mechanism composed of servo motor, pulley and V-belt completes the feeding and cutting action, and sends it to the punching station for forming. After forming, the upsetting pressure still exists to act on the hydraulic pressure reducer. At the same time, the ejecting action signal sent by the servo linear motor device makes the linear motor hydraulic lifting column device perform the ejecting action. After the ejecting action is completed, the ejecting action signal is transmitted to the servo motor through the servo linear motor device, and the servo motor By adjusting the rotation speed and rotation angle, the linear motor hydraulic lifting column device is controlled to perform the ejection action. The structure of the invention becomes compact, which prevents the cold heading machine from being torn due to the large cold heading force.
Description
技术领域 technical field
本发明涉及一种冷镦机，特别涉及一种冷镦机顶料机构。 The invention relates to a cold heading machine, in particular to a material ejecting mechanism for a cold heading machine.
背景技术 Background technique
冷镦主要用于制造螺栓、螺母、铁钉、铆钉和钢球等零件。锻坯材料可以是铜、铝、碳钢、合金钢、不锈钢和钛合金等，材料利用率可达80～90％。冷镦多在专用的冷镦机上进行，便于实现连续、多工位、自动化生产。在冷镦机上能完成送料、切料、镦头、聚积、成形、顶料、倒角、搓丝、缩径和切边等工序。生产效率高，冷镦工件的直径大。棒料由送料机构自动送进一定长度，切断机构将其切断成坯料，然后由夹钳传送机构依次送至聚积压形和冲孔工位进行成形，由于是多工位的，所以需要有顶料机构的配合使用。所以冷镦机要求结构紧凑、操作简便、加工精密，安全可靠。 Cold heading is mainly used to manufacture bolts, nuts, nails, rivets and steel balls and other parts. The forging blank material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy, etc., and the material utilization rate can reach 80-90%. Cold heading is mostly carried out on a special cold heading machine, which is convenient for continuous, multi-station and automatic production. The processes of feeding, cutting, heading, accumulation, forming, jacking, chamfering, thread rolling, diameter reduction and edge trimming can be completed on the cold heading machine. The production efficiency is high, and the diameter of the cold heading workpiece is large. The bar is automatically fed to a certain length by the feeding mechanism, and the cutting mechanism cuts it into blanks, and then is sent to the accumulating and pressing station and punching station successively by the clamp conveying mechanism for forming. Since it is multi-station, it needs to have a top Cooperating with the material mechanism. Therefore, the cold heading machine requires compact structure, easy operation, precise processing, safety and reliability.
发明内容 Contents of the invention
本发明的目的在于针对现有冷镦机聚积压形、冲孔工位和顶料时一方面由于受很大镦压力影响冷镦机的机身，减少使用年限，另一方面由于冷镦机在顶料过程需要多个机构作为辅助完成，这些中间环节所带来的各种定位误差，使得定位精度降低。为此提出一种冷镦机顶料机构，能够降低镦压力对机身的影响，提高定位精度，简化结构，且随动性好，效率高。 The purpose of the present invention is to reduce the service life due to the influence of the large upsetting pressure on the fuselage of the cold heading machine when the existing cold heading machine is accumulated and pressed, punching station and ejecting material, and on the other hand because the cold heading machine The ejecting process requires multiple mechanisms as an auxiliary, and various positioning errors caused by these intermediate links reduce the positioning accuracy. Therefore, a kind of ejecting mechanism of cold heading machine is proposed, which can reduce the influence of heading pressure on the fuselage, improve the positioning accuracy, simplify the structure, and has good follow-up and high efficiency.
为了达到上述目的，本发明的构思是：一种冷镦机顶料机构，其特征在于，其包括安装在冷镦机上的伺服直线电机装置、直线电机液压升降柱装置、液压减震装置、带轮和V型带，伺服直线电机装置包括伺服电机，服电机驱动带轮和V型带，伺服电机、带轮和V型带组成的传动机构完成送料切料动作，送至聚积压形和冲孔工位进行成形，胚料成形后镦压力依然存在作用于液压减震装置，同时伺服直线电机装置发出的顶料动作信号，让直线电机液压升降柱装置执行顶料动作，完成顶料动作后，退出顶料动作信号通过伺服直线电机装置传给伺服电机，伺服电机通过调整转动速度和转动角度，控制直线电机液压升降柱装置来执行退出顶料动作。 In order to achieve the above object, the idea of the present invention is: a cold heading machine jacking mechanism, which is characterized in that it includes a servo linear motor device installed on the cold heading machine, a linear motor hydraulic lifting column device, a hydraulic shock absorber, a belt Wheel and V-belt, the servo linear motor device includes a servo motor, the servo motor drives the pulley and the V-belt, the transmission mechanism composed of the servo motor, the pulley and the V-belt completes the feeding and cutting action, and sends it to the accumulation, pressing and punching The hole station is formed, and the upsetting pressure still exists on the hydraulic shock absorber after the blank is formed. At the same time, the ejection action signal sent by the servo linear motor device makes the linear motor hydraulic lifting column device perform the ejection action. After the ejection action is completed , The ejection action signal is transmitted to the servo motor through the servo linear motor device, and the servo motor controls the linear motor hydraulic lifting column device to perform the ejection action by adjusting the rotation speed and rotation angle.
优选地，所述伺服直线电机装置还包括信号线、直线电机，直线电机的一级与直线电机液压升降柱装置连接，控制其运动；直线电机的另一级通过信号线与伺服电机相连；冷镦机工作时，伺服电机的信号通过信号线传递给直线电机，直线电机驱动直线电机液压升降柱装置进行顶料动作，等完成顶料动作后，直线电机把退出顶料动作信号通过信号线反馈给伺服电机，伺服电机接到信号后控制直线电机液压升降柱装置退出顶料动作。 Preferably, the servo linear motor device also includes a signal line and a linear motor. One stage of the linear motor is connected to the linear motor hydraulic lifting column device to control its movement; the other stage of the linear motor is connected to the servo motor through a signal line; When the upsetting machine is working, the signal of the servo motor is transmitted to the linear motor through the signal line, and the linear motor drives the hydraulic lifting column device of the linear motor to carry out the ejection action. For the servo motor, the servo motor controls the linear motor hydraulic lifting column device to exit the ejection action after receiving the signal.
优选地，所述液压减震装置包括静模体、动模体、工位孔、冲头体、第一活塞杆、液压减震器外筒、液压减震器内筒、密封圈和第一底阀，其中在静模体中打孔形成工位孔，在动模体中安装冲头体，液压减震器内筒是安装在工位孔表面，液压减震器内筒与液压减震器外筒组成液缸，装液压油，液缸底部安装有第一底阀，第一活塞杆与液压减震器外筒之间安装一个密封圈，密封圈防止漏油；当物料所受到动模体与冲头体的镦压力时，物料所受的镦压力将传递给冷镦机机身，由于与物料接触的第一活塞杆向下运动，液压减震器外筒的液压油经第一底阀回到液压减震器内筒，镦压力经过液压减震装置后，镦压力的大小会减少，方向也会由于液压减震装置里的液体原因发生改变，起到保护机身的作用；当镦压力消失后，液压减震器内筒的液压油又通过第一底阀回到液压减震器外筒，完成一次减震动作。 Preferably, the hydraulic shock absorber includes a static die body, a movable die body, a station hole, a punch body, a first piston rod, an outer cylinder of a hydraulic shock absorber, an inner cylinder of a hydraulic shock absorber, a sealing ring and a first Bottom valve, in which the station hole is formed by drilling in the static die body, the punch body is installed in the moving die body, the inner cylinder of the hydraulic shock absorber is installed on the surface of the station hole, and the inner cylinder of the hydraulic shock absorber is connected with the hydraulic shock absorber The outer cylinder of the hydraulic shock absorber forms a hydraulic cylinder, which is filled with hydraulic oil. A first bottom valve is installed at the bottom of the hydraulic cylinder, and a sealing ring is installed between the first piston rod and the outer cylinder of the hydraulic shock absorber. The sealing ring prevents oil leakage; when the material is moved When the upsetting pressure of the mold body and the punch body is applied, the upsetting pressure on the material will be transmitted to the body of the cold heading machine. Since the first piston rod in contact with the material moves downward, the hydraulic oil in the outer cylinder of the hydraulic shock absorber passes through the first The first bottom valve returns to the inner cylinder of the hydraulic shock absorber. After the upsetting pressure passes through the hydraulic shock absorber, the magnitude of the upsetting pressure will decrease, and the direction will also change due to the liquid in the hydraulic shock absorber, which will protect the fuselage. When the upsetting pressure disappears, the hydraulic oil in the inner cylinder of the hydraulic shock absorber returns to the outer cylinder of the hydraulic shock absorber through the first bottom valve to complete a shock absorption action.
优选地，所述直线电机液压升降柱装置包括导向器、第二活塞杆、液压升降柱内筒、液压升降柱外筒、上端盖缸、往复泵、滤油器、节流阀、液控单向阀、平衡阀和第二底阀，其中液压升降柱内筒与液压升降柱外筒组成液缸，液缸存放液压油；液压升降柱外筒装有往复泵、滤油器、节流阀、液控单向阀、平衡阀，液缸底部装有第二底阀，第二活塞杆与上端盖缸之间安装有导向器，当直线电机得到来自伺服直线电机装置发出的信号后，直线电机驱动往复泵，液压升降柱外筒里的液压油将由往复泵形成一定的压力，经滤油器、节流阀、液控单向阀、平衡阀、顶开第二底阀进入液压升降柱内筒下端，使第二活塞杆向上运动，进行顶料动作，液压升降柱内筒上端液压油经换向阀回到液压升降柱外筒；完成顶料动作后的信号经过信号线反馈给伺服电机，液压油经换向阀进入液压升降柱内筒上端，液压升降柱内筒下端回油经平衡阀、液控单向阀、节流阀、换向阀回到液压升降柱外筒、第二活塞杆后向下运动，退出顶料动作；在回油路上设置平衡阀平衡回路、保持压力，由节流阀调节流量，控制升降速度；液控单向阀保证在液压管线意外爆裂时能安全自锁。 Preferably, the linear motor hydraulic lifting column device includes a guide, a second piston rod, a hydraulic lifting column inner cylinder, a hydraulic lifting column outer cylinder, an upper end cover cylinder, a reciprocating pump, an oil filter, a throttle valve, a hydraulic control unit Directional valve, balance valve and second bottom valve, in which the hydraulic lifting column inner cylinder and the hydraulic lifting column outer cylinder form a hydraulic cylinder, and the hydraulic cylinder stores hydraulic oil; the hydraulic lifting column outer cylinder is equipped with a reciprocating pump, an oil filter, and a throttle valve , hydraulic control check valve, balance valve, the second bottom valve is installed at the bottom of the hydraulic cylinder, and a guide is installed between the second piston rod and the upper end cover cylinder. When the linear motor receives the signal from the servo linear motor device, the linear The motor drives the reciprocating pump, and the hydraulic oil in the outer cylinder of the hydraulic lifting column will form a certain pressure by the reciprocating pump, and enter the hydraulic lifting column through the oil filter, throttle valve, hydraulic control check valve, balance valve, and the second bottom valve. The lower end of the inner cylinder makes the second piston rod move upward to perform the ejection action, and the hydraulic oil at the upper end of the inner cylinder of the hydraulic lifting column returns to the outer cylinder of the hydraulic lifting column through the reversing valve; the signal after the ejection action is completed is fed back to the servo through the signal line The motor and hydraulic oil enter the upper end of the inner cylinder of the hydraulic lifting column through the reversing valve, and the oil returned from the lower end of the inner cylinder of the hydraulic lifting column returns to the outer cylinder of the hydraulic lifting column through the balance valve, hydraulic control check valve, throttle valve, and reversing valve. After the second piston rod moves downward, it exits the ejection action; a balance valve is set on the oil return line to balance the circuit and maintain pressure, and the flow is adjusted by the throttle valve to control the lifting speed; the hydraulic control check valve ensures that the hydraulic pipeline can be operated when the hydraulic pipeline bursts unexpectedly. Safety self-locking.
本发明的积极进步效果在于：本发明用伺服电机一方面为切料送料动作提供动力源；一方面控制直线电机的运转定位，提高精确度。直线电机驱动往复泵液压升降柱，直接实现直线运动，消除中间环节所带来的各种定位误差，提高定位精度。在静模体中增加液压减震装置，减小镦压力对机身的作用，防止机身撕裂。 The positive and progressive effect of the present invention lies in: the present invention uses the servo motor to provide the power source for the material cutting and feeding action on the one hand; on the other hand controls the operation and positioning of the linear motor to improve the accuracy. The linear motor drives the reciprocating pump hydraulic lifting column to directly realize linear motion, eliminate various positioning errors caused by intermediate links, and improve positioning accuracy. A hydraulic damping device is added to the static mold body to reduce the effect of upsetting pressure on the fuselage and prevent the fuselage from tearing.
附图说明 Description of drawings
图1是装有伺服电机、直线电机和液压系统顶料机构整体原理图。 Fig. 1 is the overall principle diagram of the ejecting mechanism equipped with servo motor, linear motor and hydraulic system.
图2是液压系统系统的局部放大图。 Figure 2 is a partially enlarged view of the hydraulic system.
图3是图1所示装置的控制系统工作原理框图。 Fig. 3 is a working principle block diagram of the control system of the device shown in Fig. 1 .
具体实施方式 detailed description
本发明的优选实施例结合附图详述如下： Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:
参见图1、图2和图3，本发明冷镦机顶料机构包括安装在冷镦机上的伺服直线电机装置、直线电机液压升降柱装置、液压减震装置9、带轮2和V型带3，伺服直线电机装置包括伺服电机1，服电机1驱动带轮2和V型带3，伺服电机1、带轮2和V型带3组成的传动机构完成送料切料动作，送至聚积压形和冲孔工位进行成形，胚料成形后镦压力依然存在作用于液压减震装置9，同时伺服直线电机装置发出的顶料动作信号，让直线电机液压升降柱装置中的液压升降柱6执行顶料动作，完成顶料动作后，退出顶料动作信号通过伺服直线电机装置传给伺服电机1，伺服电机1通过调整转动速度和转动角度，控制直线电机液压升降柱装置中的液压升降柱6来执行退出顶料动作。 Referring to Fig. 1, Fig. 2 and Fig. 3, the ejecting mechanism of the cold heading machine of the present invention includes a servo linear motor device installed on the cold heading machine, a linear motor hydraulic lifting column device, a hydraulic shock absorbing device 9, a pulley 2 and a V-shaped belt 3. The servo linear motor device includes the servo motor 1, the servo motor 1 drives the pulley 2 and the V-belt 3, the transmission mechanism composed of the servo motor 1, the pulley 2 and the V-belt 3 completes the feeding and cutting action, and sends it to the accumulation press. The forming and punching stations are used for forming. After the billet is formed, the upsetting pressure still exists and acts on the hydraulic shock absorber 9. At the same time, the ejection action signal sent by the servo linear motor device makes the hydraulic lifting column 6 in the linear motor hydraulic lifting column device Execute the jacking action. After the jacking action is completed, the signal of exiting the jacking action is transmitted to the servo motor 1 through the servo linear motor device. The servo motor 1 controls the hydraulic lifting column in the linear motor hydraulic lifting column device by adjusting the rotation speed and rotation angle. 6 to perform the action of withdrawing from the jacking.
所述伺服直线电机装置还包括信号线4、直线电机5，直线电机5的一级与直线电机液压升降柱装置连接，控制其运动；直线电机5的另一级通过信号线4与伺服电机1相连；冷镦机工作时，伺服电机1的信号通过信号线4传递给直线电机5，直线电机5驱动直线电机液压升降柱装置进行顶料动作，等完成顶料动作后，直线电机5把退出顶料动作信号通过信号线4反馈给伺服电机1，伺服电机1接到信号后控制直线电机液压升降柱装置退出顶料动作。 The servo linear motor device also includes a signal line 4 and a linear motor 5. One stage of the linear motor 5 is connected to the linear motor hydraulic lifting column device to control its motion; the other stage of the linear motor 5 is connected to the servo motor 1 through the signal line 4. Connected; when the cold heading machine is working, the signal of the servo motor 1 is transmitted to the linear motor 5 through the signal line 4, and the linear motor 5 drives the linear motor hydraulic lifting column device to carry out the ejection action. After the ejection action is completed, the linear motor 5 will exit The ejection action signal is fed back to the servo motor 1 through the signal line 4, and the servo motor 1 controls the linear motor hydraulic lifting column device to exit the ejection action after receiving the signal.
所述液压减震装置包括静模体7、动模体8、工位孔10、工位孔壁15、冲头体12、第一活塞杆14、液压减震器外筒17、液压减震器内筒16、密封圈13和第一底阀20，其中在静模体7中打孔形成工位孔10，在动模体8中安装冲头体12，液压减震器内筒16是安装在工位孔10表面的工位孔壁15上，液压减震器内筒16与液压减震器外筒17组成液缸，装液压油，液缸底部安装有第一底阀20，第一活塞杆14与液压减震器外筒17之间安装一个密封圈13，密封圈防止漏油；当物料11所受到动模体8与冲头体12的镦压力时，物料11所受的镦压力将传递给冷镦机机身，由于与物料接触的第一活塞杆14向下运动，液压减震器外筒17的液压油经第一底阀20回到液压减震器内筒16，镦压力经过液压减震装置后，镦压力的大小会减少，方向也会由于液压减震装置里的液体原因发生改变，起到保护机身的作用，当镦压力消失后，液压减震器内筒16的液压油又通过第一底阀20回到液压减震器外筒17，完成一次减震动作。 The hydraulic damping device includes a static mold body 7, a moving mold body 8, a station hole 10, a station hole wall 15, a punch body 12, a first piston rod 14, a hydraulic shock absorber outer cylinder 17, a hydraulic shock absorber Device inner cylinder 16, seal ring 13 and first bottom valve 20, wherein in the static mold body 7 punch holes to form the station hole 10, install the punch body 12 in the dynamic mold body 8, the hydraulic shock absorber inner cylinder 16 is Installed on the station hole wall 15 on the surface of the station hole 10, the inner cylinder 16 of the hydraulic shock absorber and the outer cylinder 17 of the hydraulic shock absorber form a hydraulic cylinder, which is filled with hydraulic oil. The bottom of the hydraulic cylinder is equipped with a first bottom valve 20. A sealing ring 13 is installed between a piston rod 14 and the outer cylinder 17 of the hydraulic shock absorber to prevent oil leakage; The upsetting pressure will be transmitted to the body of the cold heading machine. As the first piston rod 14 in contact with the material moves downward, the hydraulic oil in the outer cylinder 17 of the hydraulic shock absorber returns to the inner cylinder 16 of the hydraulic shock absorber through the first bottom valve 20 , After the upsetting pressure passes through the hydraulic shock absorber, the size of the upsetting pressure will decrease, and the direction will also change due to the liquid in the hydraulic shock absorber, which will protect the fuselage. When the upsetting pressure disappears, the hydraulic shock absorber will The hydraulic oil in the inner cylinder 16 returns to the outer cylinder 17 of the hydraulic shock absorber through the first bottom valve 20 to complete a damping action.
所述直线电机液压升降柱装置包括第一导向器18、第二活塞杆19、第二导向器21、液压升降柱内筒31、液压升降柱外筒22、液压升降柱外筒壁23、上端盖缸32、往复泵24、滤油器25、节流阀27、液控单向阀28、平衡阀29和第二底阀30，其中液压升降柱内筒31与液压升降柱外筒22组成液缸，液缸存放液压油；液压升降柱外筒22装有往复泵34、滤油器25、节流阀27、液控单向阀28、平衡阀29，液缸底部装有第二底阀30，第二活塞杆19与上端盖缸32之间安装有第一导向器18，当直线电机5得到来自伺服直线电机装置发出的信号后，直线电机5驱动往复泵24，液压升降柱外筒22里的液压油将由往复泵24形成一定的压力，经液压升降柱外筒壁23上的滤油器25、节流阀27、液控单向阀28、平衡阀29、顶开第二底阀30进入液压升降柱内筒31下端，使第二活塞杆19向上运动，进行顶料动作，液压升降柱内筒31上端液压油经换向阀26回到液压升降柱外筒22；完成顶料动作后的信号经过信号线4反馈给伺服电机1，液压油经换向阀26进入液压升降柱内筒31上端，液压升降柱内筒31下端回油经平衡阀29、液控单向阀28、节流阀27、换向阀26回到液压升降柱外筒22、第二活塞杆19后向下运动，退出顶料动作；在回油路上设置平衡阀29平衡回路、保持压力，由节流阀27调节流量，控制升降速度；液控单向阀28保证在液压管线意外爆裂时能安全自锁。 The linear motor hydraulic lifting column device includes a first guide 18, a second piston rod 19, a second guide 21, a hydraulic lifting column inner cylinder 31, a hydraulic lifting column outer cylinder 22, a hydraulic lifting column outer cylinder wall 23, an upper end Cover cylinder 32, reciprocating pump 24, oil filter 25, throttle valve 27, hydraulic control check valve 28, balance valve 29 and second bottom valve 30, wherein hydraulic lifting column inner cylinder 31 and hydraulic lifting column outer cylinder 22 are composed Hydraulic cylinder, the hydraulic cylinder stores hydraulic oil; the outer cylinder 22 of the hydraulic lifting column is equipped with a reciprocating pump 34, an oil filter 25, a throttle valve 27, a hydraulic control check valve 28, and a balance valve 29, and the bottom of the hydraulic cylinder is equipped with a second bottom The first guide 18 is installed between the valve 30, the second piston rod 19 and the upper end cover cylinder 32. When the linear motor 5 receives the signal from the servo linear motor device, the linear motor 5 drives the reciprocating pump 24, and the hydraulic lifting column outside The hydraulic oil in the cylinder 22 will form a certain pressure by the reciprocating pump 24, and pass through the oil filter 25 on the outer cylinder wall 23 of the hydraulic lifting column, the throttle valve 27, the hydraulic control check valve 28, the balance valve 29, and the second push-off valve. The bottom valve 30 enters the lower end of the inner cylinder 31 of the hydraulic lifting column, so that the second piston rod 19 moves upward to carry out the ejection action, and the hydraulic oil at the upper end of the inner cylinder 31 of the hydraulic lifting column returns to the outer cylinder 22 of the hydraulic lifting column through the reversing valve 26; The signal after the jacking action is fed back to the servo motor 1 through the signal line 4, the hydraulic oil enters the upper end of the inner cylinder 31 of the hydraulic lifting column through the reversing valve 26, and the oil returns from the lower end of the inner cylinder 31 of the hydraulic lifting column through the balance valve 29, the hydraulic control one-way The valve 28, throttle valve 27, and reversing valve 26 move downward after returning to the hydraulic lifting column outer cylinder 22 and the second piston rod 19, and withdraw from the ejection action; a balance valve 29 is set on the oil return road to balance the circuit and maintain pressure. The throttle valve 27 regulates the flow rate and controls the lifting speed; the hydraulic control check valve 28 ensures that it can lock itself safely when the hydraulic pipeline bursts accidentally.
本发明用伺服电机一方面为切料送料动作提供动力源；一方面控制直线电机的运转定位，提高精确度。直线电机驱动往复泵液压升降柱，直接实现直线运动，消除中间环节所带来的各种定位误差，提高定位精度。在静模体中增加液压减震装置，减小镦压力对机身的作用，防止机身撕裂。直线电机简化了中间转换机构的传动装置，使冷镦机结构变的简单紧凑，定位精度、反应速度快、灵敏度高和随动性都得到提高；直线电机液压升降柱系统装置取代以前的弹簧，安全可靠；液压减震系统装置嵌在静模体中，起到缓冲减震的作用。该发明使冷镦机可靠性变强，顶料的位置变精确，结构变紧凑，防止了冷镦机由于冷镦力大导致机身撕裂等特点。 The present invention uses a servo motor to provide a power source for the material cutting and feeding action on the one hand; on the other hand, it controls the operation and positioning of the linear motor to improve accuracy. The linear motor drives the reciprocating pump hydraulic lifting column to directly realize linear motion, eliminate various positioning errors caused by intermediate links, and improve positioning accuracy. A hydraulic damping device is added to the static mold body to reduce the effect of upsetting pressure on the fuselage and prevent the fuselage from tearing. The linear motor simplifies the transmission device of the intermediate conversion mechanism, making the structure of the cold heading machine simple and compact, and the positioning accuracy, fast response speed, high sensitivity and follow-up are all improved; the linear motor hydraulic lifting column system replaces the previous spring, Safe and reliable; the hydraulic shock absorbing system device is embedded in the static model body to play the role of cushioning and shock absorption. The invention makes the cold heading machine more reliable, the position of the ejector material becomes more precise, and the structure becomes more compact, which prevents the cold heading machine from being torn due to the large cold heading force.
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| JPS58212831A (en) * | 1982-06-03 | 1983-12-10 | Sumitomo Heavy Ind Ltd | Bottom knock out device of forging press |
| JP2006305583A (en) * | 2005-04-27 | 2006-11-09 | Aichi Steel Works Ltd | Knock-out apparatus for forging press |
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