CN206662159U - A kind of synchronous servo electric screw press - Google Patents

Abstract

The utility model belongs to the field of presses and discloses a synchronous servo electric screw press. The press includes a body, a synchronous servo motor, and a slider. The synchronous servo motor rotates, and through the meshing of the first gear and the second gear, the screw of the shaft is driven to rotate. The screw cooperates with the nut in the slider to convert the rotational motion of the screw into an up and down linear motion, thereby realizing the up and down motion of the slider. , thereby realizing the forging of the product to be processed by the slider. Through the utility model, the control precision of the synchronous servo motor is high, the repeatability is good, the impact energy is accurate, the fluctuation is small, and the moment of inertia of the motor is small, the impact load on the transmission system with frequent sudden stops is greatly reduced, and the service life of the press is prolonged.

Description

A Synchronous Servo Electric Screw Press

technical field

The utility model belongs to the field of presses, and more specifically relates to a synchronous servo electric screw press.

Background technique

The electric screw press is a kind of forging equipment with strong process applicability. The screw press has the characteristics of great versatility, simple structure, easy adjustment and maintenance, no bottom dead center of the slider, easy mold design, and high forging precision. It is suitable for various precision forging, finishing, precision pressing, embossing, calibration, leveling and other processes. The electric screw press can be used not only for hot forging, but also for precision forging and finishing; it can not only be applied to the pressure welding process of stainless steel double bottom pot, but also can be used for precision forging of titanium alloy blades and other blades.

At present, the electric screw press generally adopts the drive mode of asynchronous motor plus frequency converter or switched reluctance motor plus controller. The drive method of asynchronous motor plus frequency converter is adopted. The motor speed control is an open-loop method, that is, the frequency converter drives the motor in a fixed driving mode according to the set value, and there is no motor speed feedback. Its speed accuracy and repeatability are not high, resulting in large fluctuations in strike energy. Moreover, the moment of inertia of the asynchronous motor is large, and the impact load is large for the transmission system with frequent start and stop, so that the life of the pinion, the weakest link in the transmission system, is low. The driving mode of switched reluctance motor and controller is adopted, the speed control is inaccurate, the striking energy is inaccurate, and the fluctuation is large.

Utility model content

Aiming at the defects of the prior art, the utility model aims to solve the problems of large moment of inertia of the motor and inaccurate impact energy by adopting a synchronous servo motor.

In order to achieve the above purpose, the utility model provides a synchronous servo electric screw press, which includes a fuselage, a synchronous servo motor and a slider, and is characterized in that:

The fuselage is in the shape of a cube and is the carrier of other components. There is a square groove in the middle of the fuselage. The product to be processed is placed at the bottom of the groove, and a slider is arranged above the bottom of the square groove for forging and pressing. products to be processed;

The left and right sides of the square groove are provided with guide rails that cooperate with the slider, and the slider is connected with the second gear on the top of the fuselage through a rotatable screw arranged inside it, wherein the screw and The slider is connected by a nut to form a thread pair for converting the rotational motion of the screw into the up and down motion of the slider;

The synchronous servo motor is the drive system of the whole device, the synchronous servo motor is connected with the first gear through a coupling, the first gear meshes with the second gear to drive the screw to rotate, and the screw and the The nut cooperation converts the rotation of the screw rod into the up and down motion of the slider, thereby realizing the forging of the product to be processed.

Preferably, a detector is provided on one side of the slider, and a photoelectric rotary encoder is used to detect the falling position and speed of the slider.

Preferably, a hydraulic drive brake is provided on one side of the second gear, and the mechanical brake of the second gear can be realized by pressing the second gear.

Preferably, a thrust bearing is provided at the contact between the screw rod and the top end of the fuselage frame for buffering and absorbing the reaction force when the slider forges the product to be processed, and the material of the bearing is copper.

Preferably, the synchronous servo motor is provided with a rotary encoder for detecting the position and rotational speed of the rotor in the synchronous servo motor.

Through the above technical solutions conceived by the utility model, compared with the prior art, the following beneficial effects can be obtained:

1. The utility model adopts the driving method of the synchronous servo motor, which can perform real-time feedback and control on the position and speed of the motor rotor. The control precision is high, the repeatability is good, the impact energy is accurate, and the fluctuation is small. At the same time, the moment of inertia of the synchronous servo motor Small, the impact load on the transmission system with frequent starts and stops is greatly reduced, thereby improving the life of the weakest link in the transmission system, the pinion;

2. The utility model can detect the position and speed of the sliding block in real time by using a detector, and feed the information back to the control system of the synchronous servo motor, thereby realizing real-time regulation of the speed of the synchronous motor and improving the accuracy of striking energy;

3. The utility model adopts an optimized mechanical transmission system, wherein the gear pair is formed by the first gear and the second gear, and the thread pair is formed by the screw and the nut, so as to realize the transmission of mechanical motion and convert the rotational motion of the screw into an up and down straight line sports;

4. The utility model can effectively brake the second gear by setting the hydraulic drive brake. In addition, a thrust bearing is set at the top contact between the screw and the fuselage frame, so that the screw can be buffered in the process of rebounding after hitting the forging. , improve the service life of parts.

Description of drawings

Fig. 1 is a schematic structural view of a synchronous servo electric screw press constructed according to a preferred embodiment of the present invention.

Throughout the drawings, the same reference numerals are used to designate the same elements or structures, wherein:

1-body 2-slider 3-nut 4-screw 5-synchronous servo motor 6-coupling 7-first gear 8-second gear 9-hydraulic drive brake 10-bearing 11-detector 12-guide rail

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 1 is a schematic structural view of a synchronous servo electric screw press built according to a preferred embodiment of the present invention. As shown in Fig. 1, the synchronous servo electric screw press includes a fuselage 1, a slider 2; a nut 3, a screw rod 4. Synchronous servo motor with rotary encoder 5, coupling 6, first gear 7, second gear (flywheel) 8, brake 9, bearing 10, detector 11. The slider 2 is installed in the fuselage 1, and moves up and down in the fuselage 1 through the guide rail 12; the nut 3 is fixed in the slider 2 and is integrated with the slider; the thread pair formed by the nut 3 and the screw 4 connects the screw The rotary motion is converted into the up and down linear motion of the nut; a thrust bearing 9 is installed between the screw 4 and the fuselage 1 to transmit the axial force; the screw 4 is connected with the second gear 8, and the second gear 8 meshes with the first gear 7 to form a gear pair The first gear 7 and the synchronous servo motor 5 are transmitted through the coupling 6, the synchronous servo motor 5 drives the first gear 7 to rotate, the first gear 7 meshes with the second gear 8, and the second gear 8 drives the screw rod 4 through the pin shaft , the middle part of the screw 4 is equipped with a thrust bearing 10 to transmit the axial force to the fuselage 1, the thread of the screw 4 and the nut 3 cooperates to convert the rotary motion of the screw 4 into the reciprocating linear motion of the nut 3 and the slider 2, and simultaneously transmit Energy and power, the brake 9 is installed on the top of the second gear, and the brake block is pressed down on the second gear 8 by the spring force to prevent its abnormal rotation; the detector 11 is installed on the fuselage 1 to detect the sliding Block 2 position and speed, synchronous servo motor 5 with a rotary encoder to detect the position and speed of the rotor.

Those skilled in the art can easily understand that the above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and modifications made within the spirit and principles of the utility model Improvements and the like should all be included within the protection scope of the present utility model.

Claims (5)

1. a kind of synchronous servo electric screw press, the forcing press includes fuselage (1), synchronous servo motor (5) and sliding block (2), it is characterised in that：

The fuselage (1) is in cubic type, is the carrier of other elements, and the waist is provided with square groove, production to be processed Product are placed on the bottom of the groove, sliding block (2) are provided with above the square trench bottom, for forging and pressing processed product；

The guide rail (12) coordinated with the sliding block (2) is provided with left and right sides of the square groove, the sliding block (2) passes through setting Rotatable screw rod (4) inside it is connected with the second gear (8) of the body upper, wherein, the screw rod (4) with it is described Sliding block (2) is connected so as to form screw thread pair by nut (3), for being the sliding block by the convert rotational motion of the screw rod Move up and down；

The synchronous servo motor (5) is the drive system of whole device, the synchronous servo motor by shaft coupling (6) with First gear (7) connects, and the first gear (7) is engaged with the second gear (8) drives the screw rod to rotate, the screw rod Coordinate with the nut by the up and down motion for being converted into the sliding block of the screw rod, so as to realize towards processed products Forging and stamping.

2. a kind of synchronous servo electric screw press as claimed in claim 1, it is characterised in that the side of the sliding block is also Detector (11) is provided with, using the rotary encoder of photo-electric, for detecting position and the speed of sliding block decline.

A kind of 3. synchronous servo electric screw press as claimed in claim 1 or 2, it is characterised in that the second gear Side be provided with hydraulic-driven brake (9), realized by pressing the second gear to its mechanical braking.

4. a kind of synchronous servo electric screw press as claimed in claim 1 or 2, it is characterised in that the screw rod and institute State and thrust bearing (10) is provided with fuselage ring tip contact, when forging and pressing processed product for buffering and absorbing the sliding block Reaction force, the bearing material uses copper.

A kind of 5. synchronous servo electric screw press as claimed in claim 1 or 2, it is characterised in that the synchronous servo Rotary encoder is provided with motor, for detecting the position of rotor and rotating speed in the synchronous servo motor.