阅读说明：本技术 一种形变补偿装置及液压机 (Deformation compensation device and hydraulic machine ) 是由 胡明杰 刘飞 唐正 于 2021-06-29 设计创作，主要内容包括：本发明属于多向液压设备技术领域,尤其涉及一种形变补偿装置及液压机。该形变补偿装置包括张紧执行机构检测装置及控制机构,张紧执行机构两端分别设置在两立柱上；检测装置设置在立柱上,用于检测立柱弯曲形变量,控制机构连接检测装置及张紧执行机构。本发明用于解决侧向推力影响精度的问题。利用设置在两立柱上的张紧执行机构抵消立柱上侧油缸在挤压时产生的侧向推力,减少立柱的形变量,保证主滑块合模时的精确度。(The invention belongs to the technical field of multidirectional hydraulic equipment, and particularly relates to a deformation compensation device and a hydraulic machine. The deformation compensation device comprises a tensioning actuating mechanism detection device and a control mechanism, wherein two ends of the tensioning actuating mechanism are respectively arranged on two stand columns; the detection device is arranged on the stand column and used for detecting the bending deformation quantity of the stand column, and the control mechanism is connected with the detection device and the tensioning execution mechanism. The invention is used for solving the problem that the lateral thrust affects the precision. The tensioning actuating mechanisms arranged on the two upright posts are utilized to offset the lateral thrust generated by the oil cylinders on the upper sides of the upright posts during extrusion, so that the deformation of the upright posts is reduced, and the accuracy of the main sliding block during die assembly is ensured.)

1. The utility model provides a deformation compensation arrangement, uses on frame-type hydraulic press, and this frame-type hydraulic press has two stands, be provided with the side hydro-cylinder on the stand, its characterized in that, this deformation compensation arrangement includes:

two ends of the tensioning actuating mechanism are respectively arranged on the two upright posts;

the detection device is arranged on the stand column and used for detecting the bending deformation quantity of the stand column;

and the control mechanism is connected with the detection device and the tensioning execution mechanism.

2. A deformation compensating device according to claim 1, wherein the tension actuator comprises:

the first bracket is fixed on the upright post;

the second bracket is fixed on the other upright post, and a tensioning oil cylinder is arranged on the second bracket;

and two ends of the pull rod are respectively connected with the first support and the output end of the tensioning oil cylinder.

3. A strain compensating apparatus as claimed in claim 1, wherein the two ends of the tensioning actuator are disposed opposite to the side cylinders on the two sides, respectively.

4. A deformation compensating device according to claim 1, wherein the control mechanism comprises:

the servo unit is connected with the tensioning actuating mechanism and is used for controlling the output pressure value of the tensioning mechanism;

and the electric control unit is connected with the detection device and the servo unit and is used for receiving the detection signal sent by the detection device, processing and sending a control signal to the servo unit.

5. A deformation compensation device according to claim 4, wherein the servo unit comprises:

the servo control valve group is connected with the tensioning actuating mechanism and the electric control unit and is used for controlling the pressure value of the tensioning actuating mechanism;

the oil pump is connected with the servo control valve bank and used for conveying pressure oil to the servo control valve bank;

and the servo motor is connected with the oil pump and the electric control unit and is used for controlling the flow of the oil pump.

6. A deformation compensation device according to claim 4, wherein the electrical control unit comprises:

the controller is connected with the detection device and is used for receiving the deformation quantity of the upright post;

and the driver is connected with the controller and the servo unit and is used for sending a flow control signal to the servo unit.

7. A strain compensating device as claimed in claim 5, further comprising a rotary encoder, wherein the rotary encoder is disposed on the servo motor and connected to the electrical control unit for feeding back a rotation speed signal of the servo motor.

8. A deformation compensation device according to claim 4, further comprising a pressure sensor, wherein the pressure sensor is disposed on the tensioning actuator and connected to the electrical control unit for feeding back an actual pressure value of the tensioning actuator.

9. A hydraulic machine, comprising: the deformation compensation device comprises a base, two upright columns arranged on the base, an upper cross beam arranged on the upright columns, and side oil cylinders arranged on the upright columns, and further comprises the deformation compensation device which is arranged on the two upright columns and is used as claimed in any one of claims 1 to 8.

Technical Field

The invention belongs to the technical field of multidirectional hydraulic equipment, and particularly relates to a deformation compensation device and a hydraulic machine.

Background

In the multi-directional extrusion hydraulic press, the up-and-down moving oil cylinder is a main oil cylinder and is used for die assembly through a main slide block; the side oil cylinder is a main oil cylinder formed by extrusion, the side oil cylinder is arranged on the upright columns at two sides, and the upright columns play a role in guiding the main sliding block when moving up and down.

The traditional multidirectional extrusion forming hydraulic machine has the characteristic of forming process, the lateral thrust ratio is large and is generally about 40% of the nominal force of the hydraulic machine, and an upright post can deform during extrusion forming, so that the precision of a main oil cylinder which moves up and down is not high during die assembly.

At present, the method of reinforcing (widening and thickening) the upright column is mainly adopted to solve the problem of upright column deformation caused by side thrust. In addition, when the upright column is reinforced, the upper cross beam matched with the upright column, the local part of the base and the positioning clamping key are also required to be synchronously reinforced so as to offset the lateral thrust borne by the upright column.

The overall size and the weight of the main machine are increased sharply due to the reinforcement of the upright columns, the local upper cross beam and the base and the positioning clamping keys, so that the production and manufacturing cost is increased, and the lifting, transporting and installing cost is also increased.

Disclosure of Invention

The technical problem that this application embodiment will solve lies in overcoming prior art not enough, provides a deformation compensation arrangement and hydraulic press for solve the problem that lateral thrust influences the precision.

The technical scheme for solving the technical problems in the embodiment of the application is as follows: the utility model provides a deformation compensation arrangement, uses on frame-type hydraulic press, and this frame-type hydraulic press has two stands, be provided with the side hydro-cylinder on the stand, this deformation compensation arrangement includes:

two ends of the tensioning actuating mechanism are respectively arranged on the two upright posts;

the detection device is arranged on the stand column and used for detecting the bending deformation quantity of the stand column;

and the control mechanism is connected with the detection device and the tensioning execution mechanism.

Compared with the prior art, the technical scheme has the following beneficial effects:

the tensioning actuating mechanisms arranged on the two upright posts are utilized to counteract the lateral thrust generated by the oil cylinders on the upper sides of the upright posts during extrusion, so that the deformation of the upright posts is reduced, and the accuracy of the main sliding block during die assembly is ensured; meanwhile, a detection device is arranged on the stand column, the deformation quantity of the stand column is detected in real time, the deformation quantity is sent to a control mechanism to be calculated, the real-time tension of the lateral oil cylinder is obtained, then the tension actuating mechanism is accurately controlled to compensate the tension with the same magnitude so as to offset the lateral thrust generated by the oil cylinder on the upper side of the stand column during extrusion, and the action precision of the main sliding block of the hydraulic press is ensured.

Further, the tensioning actuator includes:

the first bracket is fixed on the upright post;

the second bracket is fixed on the other upright post, and a tensioning oil cylinder is arranged on the second bracket;

and two ends of the pull rod are respectively connected with the first support and the output end of the tensioning oil cylinder.

Furthermore, two ends of the tensioning actuating mechanism are respectively arranged opposite to the side oil cylinders on two sides.

The two ends of the tensioning actuating mechanism are arranged opposite to the side oil cylinders, so that the tension force generated by the tensioning actuating mechanism is consistent with the lateral thrust force generated by the upper side oil cylinder of the stand column during extrusion, the tension force can be effectively offset, and no deviation is generated.

Further, the control mechanism includes:

the servo unit is connected with the tensioning actuating mechanism and is used for controlling the output pressure value of the tensioning mechanism;

and the electric control unit is connected with the detection device and the servo unit and is used for receiving the detection signal sent by the detection device, processing and sending a control signal to the servo unit.

Further, the servo unit includes:

the servo control valve group is connected with the tensioning actuating mechanism and the electric control unit and is used for controlling the pressure value of the tensioning actuating mechanism;

the oil pump is connected with the servo control valve bank and used for conveying pressure oil to the servo control valve bank;

and the servo motor is connected with the oil pump and the electric control unit and is used for controlling the flow of the oil pump.

Further, the electrical control unit includes:

the controller is connected with the detection device and is used for receiving the deformation quantity of the upright post;

and the driver is connected with the controller and the servo unit and is used for sending a flow control signal to the servo unit.

Further, still include rotary encoder, rotary encoder sets up on servo motor, and connect electrical control unit is used for feeding back servo motor's rotational speed signal.

The rotating speed of the servo motor is fed back in real time by using the rotary encoder, closed-loop control of the rotating speed of the servo motor is realized, and the accurate control of the rotating speed of the servo motor is ensured.

Further, the device also comprises a pressure sensor, wherein the pressure sensor is arranged on the tensioning actuating mechanism, is connected with the electric control unit and is used for feeding back an actual pressure value of the tensioning actuating mechanism.

The output pressure value of the tensioning actuating mechanism is monitored by utilizing the pressure sensor to judge whether the pressure value compensated by the tensioning actuating mechanism is accurate or not, whether deviation exists or not is judged, the fact that the tensioning actuating mechanism can accurately offset the lateral thrust generated by the oil cylinder on the upper side of the stand column during extrusion is guaranteed, and the die assembly accuracy of the main sliding block is guaranteed.

This embodiment still discloses a hydraulic machine, and it includes: the base, set up two stands on the base and set up the entablature on the stand, be provided with the side hydro-cylinder on the stand, still including setting up two above-mentioned deformation compensation arrangement on the stand.

The hydraulic machine has the beneficial effects of the deformation compensation device, and the details are not repeated herein.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the lateral thrust generated by the lateral oil cylinder in the multidirectional hydraulic press is offset by the tensioning actuating mechanism, and the two ends of the tensioning actuating mechanism are opposite to the lateral oil cylinder, so that the lateral thrust generated by the oil cylinder on the upper side of the upright post during extrusion can be effectively offset by the tensioning actuating mechanism.

The deformation quantity of the stand column is detected by the electric control unit and converted into a corresponding pulling force, corresponding oil pressure is output to the tensioning actuating mechanism through the servo unit, corresponding pulling force is generated to offset lateral pushing force generated by the oil cylinder on the upper side of the stand column during extrusion, a detection loop is formed by the electric control unit and the detection device, the deformation quantity of the stand column is monitored in real time, corresponding pulling force generated in follow-up motion is guaranteed, the deformation quantity of the stand column is controlled within an effective range, and die assembly extrusion accuracy of the main sliding block is guaranteed.

The pressure sensor arranged on the tensioning actuating mechanism and the rotary encoder arranged on the servo motor are used for detecting the actual output values of the two devices in real time and sending the actual output values into the control mechanism, so that the actual output values of the compensated output pressure values are accurate and effective.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic front view of a structure according to an embodiment of the present invention.

Fig. 2 is a schematic top view of the structure of fig. 1.

Fig. 3 is an enlarged schematic diagram of the X-point in fig. 1.

Fig. 4 is an enlarged schematic view of the structure at Y in fig. 1.

Fig. 5 is a connection block diagram of a control mechanism according to an embodiment of the present invention.

Reference numerals:

1. a column; 2. a side oil cylinder;

3. a tensioning actuator;

31. a first bracket; 32. a second bracket; 33. tensioning the oil cylinder; 34. a pull rod; 35. connecting sleeves;

4. a detection device;

51. a servo unit; 52. an electrical control unit;

511. a servo control valve group; 512. an oil pump; 513. a servo motor;

521. a controller; 522. a driver;

6. a pressure sensor;

7. a rotary encoder;

8. an upper cross beam; 9. a base;

10. a main slider.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example 1

As shown in fig. 1, a deformation compensation device provided in an embodiment of the present invention is applied to a frame-type hydraulic machine, the frame-type hydraulic machine has two columns 1, a side cylinder 2 is disposed on each column 1, and the deformation compensation device includes: the device comprises a tensioning executing mechanism 3, a detection device 4 and a control mechanism, wherein two ends of the tensioning executing mechanism 3 are respectively arranged on two upright posts 1, the detection device 4 is arranged on the upright posts 1 and used for detecting the bending deformation of the upright posts 1, the control mechanism is connected with the detection device 4 and the tensioning executing mechanism 3, deformation signals detected by the detection device 4 are transmitted to the control mechanism, corresponding control signals are output to the tensioning executing mechanism 3 after operation of the control mechanism, and corresponding pulling force is output to offset the lateral thrust generated by the oil cylinder 2 on the upper side of the upright posts 1 during extrusion.

As shown in fig. 1 and 2, specifically, two ends of the tensioning actuator 3 are respectively opposite to the side cylinders 2 at two sides, and the detecting device 4 can use an element such as a strain gauge attached to the upright post 1 to detect the amount of deformation generated by the upright post 1.

The two ends of the tensioning actuating mechanism 3 are arranged opposite to the side oil cylinders 2, so that the tension force generated by the tensioning actuating mechanism 3 is consistent with the lateral thrust force generated by the side oil cylinders 2 on the upright 1 during extrusion, and the tension force can be effectively offset without generating deviation.

Specifically, the tensioning actuator 3 and the side cylinders 2 on both sides are located on the same axial line, so that the lateral thrust generated by the tensioning actuator 3 and the side cylinders 2 is kept on the same straight line, and the tensioning actuator 3 can accurately offset the lateral thrust generated by the side cylinders 2 on the upright post 1 during extrusion.

The lateral thrust generated by the oil cylinder 2 on the upper side of the upright post 1 during extrusion is counteracted by using the tensioning actuating mechanisms 3 arranged on the two upright posts 1, so that the deformation of the upright post 1 is reduced, and the accuracy of the main slide block 10 during die assembly is ensured; meanwhile, the detection device 4 is arranged on the upright post 1, the deformation amount of the upright post 1 is detected in real time, the deformation amount is sent to the control mechanism to be calculated, the real-time tension of the lateral oil cylinder is obtained, the tension actuating mechanism 3 is accurately controlled to compensate the tension with the same magnitude so as to offset the lateral thrust generated by the oil cylinder 2 on the upright post 1 during extrusion, and the action precision of the main sliding block 10 of the hydraulic press is ensured.

As shown in fig. 3 and 4, the tensioning actuator 3 includes: a first bracket 31, a second bracket 32, and a pull rod 34;

first support 31 is fixed on the stand 1, and second support 32 is fixed another on the stand 1, first support 31 and second support 32 can form with coexistence post 1 integrated into one piece, improve the bulk strength of support and stand 1, be provided with tensioning cylinder 33 on the second support 32, the pull rod 34 both ends are connected respectively first support 31 reaches tensioning cylinder 33 output, and is concrete, and pull rod 34 passes through adapter sleeve 35 and is connected with tensioning cylinder 33 output.

As shown in fig. 2, specifically, two tensioning actuators 3 are provided, and the tensioning actuators 3 arranged in groups are symmetrically arranged on two sides of the two upright posts 1, so that the two tensioning actuators 3 generate corresponding pulling force inwards on the whole of the two upright posts 1, and the upright posts 1 are prevented from being pulled on one side, so that the upright posts 1 generate circumferential deformation.

As shown in fig. 5, in the present embodiment, the control mechanism includes: the servo unit 51 is connected with the tensioning actuating mechanism 3 and is used for controlling the output pressure value of the tensioning mechanism, specifically, pressure oil with a target pressure value is introduced into an oil port of a tensioning oil cylinder 33P in the tensioning actuating mechanism 3 through the servo unit 51, and the tensioning oil cylinder 33 generates corresponding pulling force to counteract the lateral thrust generated by the oil cylinder 2 on the upper side of the upright post 1 during extrusion; the electric control unit 52 is connected to the detection device 4 and the servo unit 51, and is configured to receive the detection signal sent by the detection device 4, process and send a control signal to the servo unit 51, and output pressure oil to the tensioning actuator 3 through the servo unit 51.

The servo unit 51 includes: servo control valves 511, oil pump 512 and servo motor 513, servo control valves 511 connect tensioning actuating mechanism 3 and electric control unit 52 are used for controlling tensioning actuating mechanism 3 pressure value, and oil pump 512 connects servo control valves 511 for carry pressure oil to servo control valves 511, and servo motor 513 connects oil pump 512 and electric control unit 52 are used for controlling the oil pump 512 flow.

Specifically, the servo control valve group 511 is connected to a P oil port of the tensioning oil cylinder 33 in the tensioning executing mechanism 3, the oil pump 512 is connected to an external oil tank, the servo motor 513 precisely controls the flow rate and the like of the oil pump 512, and then outputs corresponding pressure oil to the tensioning oil cylinder 33 through the matching with the servo control valve group 511 so as to generate corresponding pulling force.

Wherein the electrical control unit 52 includes: the controller 521 and the driver 522 are connected with the detection device 4, and are used for receiving the deformation quantity of the upright post 1; the driver 522 is connected to the controller 521 and the servo unit 51, and is configured to send a flow control signal to the servo unit 51.

Specifically, the controller 521 may adopt a programmable device such as a PLC, and generates a corresponding pressure output value according to the deformation amount detected by the technical detection device 4 through an internal program, the driver 522 is specifically a servo driver 522 and is configured to drive the servo motor 513 to rotate, and the controller 521 controls the servo control valve set 511 and controls the servo motor 513 through the driver 522, so that the tensioning cylinder 33 outputs an accurate tension value.

In this embodiment, the servo motor further includes a rotary encoder 7, where the rotary encoder 7 is disposed on the servo motor 513, and is connected to the electrical control unit 52, specifically, connected to the controller 521 in the electrical control unit 52, and configured to feed back a rotation speed signal of the servo motor 513.

The device further comprises a pressure sensor 6, wherein the pressure sensor 6 is arranged on the tensioning actuator 3 and is connected with the electric control unit 52, in particular to a controller 521 in the electric control unit 52, and is used for feeding back an actual pressure value of the tensioning actuator 3.

The rotating speed of the servo motor 513 is fed back in real time by the rotary encoder 7, so that the closed-loop control of the rotating speed of the servo motor 513 is realized, and the accurate control of the rotating speed of the servo motor 513 is ensured; the pressure sensor 6 is utilized to monitor the output pressure value of the tensioning actuating mechanism 3 so as to judge whether the pressure value compensated by the tensioning actuating mechanism 3 is accurate or not, whether deviation exists or not is judged, the tensioning actuating mechanism 3 is ensured to accurately offset the lateral thrust generated by the side oil cylinder 2, and the die assembly accuracy of the main sliding block 10 is ensured.

Example 2

This embodiment still discloses a hydraulic machine, and it includes: the hydraulic press comprises a base 9, two upright columns 1 arranged on the base 9 and an upper beam 8 arranged on the upright columns 1, wherein the two upright columns 1, the base 9 and the upper beam 8 form a main body structure of the frame type hydraulic press, a side oil cylinder 2 is arranged on each upright column 1, and the hydraulic press further comprises a deformation compensation device arranged on the two upright columns 1 in the embodiment 1.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the lateral thrust generated by the lateral oil cylinder 2 in the multidirectional hydraulic press is offset by the tensioning actuating mechanism 3, and the two ends of the tensioning actuating mechanism 3 are opposite to the lateral oil cylinder 2, so that the tensioning actuating mechanism 3 can effectively offset the lateral thrust generated by the lateral oil cylinder 2 on the upright post 1 during extrusion, the overall dimension of the main machine is reduced, the weight of the main machine is reduced, and the manufacturing cost, the processing cost, the transportation cost and the lifting cost are reduced.

The deformation amount of the upright post 1 is detected to be converted into the corresponding tension size through the electric control unit 52, corresponding oil is output to the tensioning actuating mechanism 3 through the servo unit 51, corresponding tension is generated to offset the lateral thrust generated by the oil cylinder 2 on the upper side of the upright post 1 during extrusion, a detection loop is formed through the electric control unit 52 and the detection device 4, the deformation amount of the upright post 1 is monitored in real time, the corresponding tension generated in follow-up motion is guaranteed, the deformation amount of the upright post 1 is controlled within an effective range, the die assembly extrusion precision of the main sliding block 10 is guaranteed, and meanwhile, the service life of a die is prolonged.

The pressure sensor 6 arranged on the tensioning actuating mechanism 3 and the rotary encoder 7 arranged on the servo motor 513 are used for detecting the actual output values of the two devices in real time and sending the actual output values to the control mechanism, so that the actual output values of the pressure values output by compensation are accurate and effective, and the axial tension of the pull rod 34 can be accurately adjusted in real time by adopting a PID closed-loop control technology.

Simple structure, convenient assembly, disassembly and adjustment, low manufacturing and maintenance cost and wide application range.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.