Nitrogen spring simulation load system device for servo press performance detection

Abstract

The utility model relates to the technical field of servo presses, in particular to a nitrogen spring simulation load system device for servo press performance detection, which comprises a press body, the press body comprises an upper workbench and a lower workbench, and a pressurizing table is fixedly mounted on the lower surface of the upper workbench. A nitrogen spring mounting plate is fixedly mounted on the upper surface of the lower workbench, and a plurality of nitrogen springs are fixedly mounted on the upper surface of the nitrogen spring mounting plate. According to the utility model, a plurality of nitrogen springs are effectively matched, and the pressurizing table and the nitrogen spring mounting plate are respectively fixed on the upper workbench and the lower workbench of the press, so that a set of flexible elastic component is formed. When the servo performance of the servo press is detected, the nitrogen spring absorbs and releases nitrogen in the effective stroke range of the nitrogen spring, and the test requirements of different points in the nominal force stroke of the servo press are met. The device is simple in processing technology, and can meet the servo performance detection requirements of servo presses of different tonnages.

Description

TECHNICAL FIELD

[0001] The utility model relates to servo press technical field, concretely is a nitrogen gas spring simulation load system device for servo press performance detection. BACKGROUND

[0002] Servo performance is one of the important indexes for measuring servo press performance, therefore, the detection and verification method of servo performance, especially the stability of pressure output value in the nominal force stroke range of servo press, is the key factor for verifying the performance of servo motor and servo driver. Servo press adopts servo motor as power source, and the performance parameters directly affect the performance in the nominal force stroke range of servo press. Servo driver adopts advanced control technology to realize accurate control of parameters such as pressure, speed and position of servo press. In the traditional technical scheme, the load device is generally a rigid body or a hydraulic loader, and the pressure output value of the load size is not stable enough. Whether the pressure output value in the nominal force stroke range of servo press can keep consistent with the set value of servo motor and servo driver seriously affects the realization of the whole control technical scheme of servo press.

[0003] If the load device mentioned in the traditional technical scheme is a rigid body, the stress is concentrated in the local area, the stroke is not adjustable, and large vibration and noise are generated. The reverse spring force of the press itself is large, which causes poor contact of the machine tool and electrical components due to vibration, and affects the repeatability and accuracy of servo performance detection. If it is a hydraulic loader, the fluctuation and pipeline throttling loss are not very accurate. It occupies a large space and needs to be equipped with a special hydraulic device. Moreover, not all presses are equipped with a hydraulic system.

[0004] Therefore, according to the above scheme, the rigid body and the hydraulic loader can only be based on traditional experience, and the load stroke cannot be dynamically adjusted. The settings of parameters such as motor speed, motor torque and crank angle cannot be optimized to match the servo driver, which also seriously affects the performance of the production and processing technology in the nominal force stroke of the servo press. In order to ensure the accuracy of matching, simulation test is carried out before actual production and installation, and a stable simulation load device with adjustable stroke is urgently needed. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a nitrogen gas spring simulation load system device for servo press performance detection to solve the problems in the above background art.

[0006] To achieve the above object, the utility model discloses the following technical scheme: the utility model provides a nitrogen gas spring simulation load system device for servo press performance detection, including press body, the press body includes upper workbench and lower workbench, the upper workbench lower surface fixed mounting has pressurizing platform, the lower workbench upper surface fixed mounting has nitrogen gas spring mounting plate, a plurality of nitrogen gas springs are fixedly installed on the upper surface of the nitrogen gas spring mounting plate.

[0007] As preferred, the nitrogen gas spring nominal force stroke is 2-3mm greater than the press body nominal force stroke, and the nitrogen gas spring elastic pressure is 15%-20% greater than the stamping force calculated by the press body nominal tonnage.

[0008] As preferred, the nitrogen gas springs are uniformly distributed on the nitrogen gas spring mounting plate.

[0009] As preferred, the nitrogen gas spring mounting plate is made of Q235 steel plate, and the upper and lower surfaces of the nitrogen gas spring mounting plate are subjected to flat grinding finishing treatment.

[0010] As preferred, the pressurizing platform is made of Q235 steel plate welding parts, the upper and lower surfaces of the pressurizing platform are subjected to flat grinding treatment, and the remaining outer surfaces are sprayed with rust-proof paint.

[0011] As preferred, the pressurizing platform is subjected to hollowing treatment in the middle.

[0012] As preferred, the pressurizing platform and the upper workbench are fixed by high-strength bolts and nuts through T-shaped grooves.

[0013] As preferred, the nitrogen gas spring mounting plate and the lower workbench are fixed by high-strength bolts and nuts through T-shaped grooves.

[0014] As preferred, the nitrogen gas springs are fixedly installed on the nitrogen gas spring mounting plate by screws.

[0015] Compared with the prior art, the utility model has the advantages and positive effects that:

[0016] The utility model provides a nitrogen gas spring simulation load system device for servo press performance detection, in order to get rid of the influence of traditional load device, the utility model provides a set of scientific nitrogen gas spring simulation load system device to support servo press servo performance detection. The utility model effectively matches multiple nitrogen gas springs, fixes the pressurizing platform and the nitrogen gas spring mounting plate on the upper workbench and the lower workbench of the press respectively, forms a set of flexible elastic components, when the servo press is in servo performance detection, the nitrogen gas springs absorb and release nitrogen in the effective stroke range, and meet the test requirements of different points in the servo press nominal force stroke.

[0017] The nitrogen spring simulation load system device uses nitrogen spring as a carrier, fully utilizes the advantages of nitrogen spring, such as large elastic force, long stroke, stable work, precise manufacturing and convenient installation, is a good flexible component, has excellent damping performance, can fully utilize the adjustable stroke advantage of the nitrogen spring in the servo performance detection test process, perfectly realizes the optimization and adaptation of various parameters of different point servo motors and servo drivers in the nominal force range of the servo press, and can realize effective buffering and protection of the servo press and components. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a schematic diagram of the working position of the present application;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 3 It is a schematic diagram of the structure of the pressurizing table of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of the spring mounting plate of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of the nitrogen spring of the present application.

[0024] In the figure, 1 is a pressurizing table; 2 is a nitrogen spring; 3 is a nitrogen spring mounting plate; 4 is an upper workbench; 5 is a T-shaped groove high-strength bolt and nut; 6 is a lower workbench; 7 is a press body. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other ways not described herein, and the present application is not limited to the specific embodiments described below.

[0027] The accompanying drawings are a specific embodiment of the present application. The embodiment aims to provide a nitrogen spring simulation load system device for performance detection of a servo press, which comprises a press body 7, the press body 7 comprises an upper workbench 4 and a lower workbench 6, which are used to bear and constitute the nitrogen spring simulation load system device, a pressurizing table 1 is fixedly installed on the lower surface of the upper workbench 4, which is used to apply pressure to the nitrogen spring 2 below, a nitrogen spring mounting plate 3 is fixedly installed on the upper surface of the lower workbench 6, which is used to receive the nitrogen spring 2, a plurality of nitrogen springs 2 are fixedly installed on the upper surface of the nitrogen spring mounting plate 3, the nitrogen spring 2 is a component with elastic function, which seals high-pressure nitrogen in a certain container, external force compresses nitrogen through the plunger rod, and a certain elastic pressure is obtained by the expansion of high-pressure nitrogen when the external force is removed, the nitrogen spring 2 can be an independent unit, or multiple groups can be freely combined and connected with the mounting plate to become a system, without pre-pressing, with stable mechanical properties and good shock absorption effect. The independent nitrogen spring 2 has a long stroke, and the elastic pressure is almost constant throughout the stroke. The service life can reach more than 1.5 million times, and the internal nitrogen is a common safe gas, which is relatively safe during manufacturing and use.

[0028] In order to ensure the safety and service life of the nitrogen spring 2 and to be more in line with the actual production situation, the selected nitrogen spring 2 has a nominal force stroke greater than the nominal force stroke of the press body by 2-3 mm, and the selected nitrogen spring 2 has an elastic pressure greater than the punching force calculated by the nominal tonnage of the press body by 15%-20%.

[0029] In order to make the pressure evenly distributed among the nitrogen springs 2, the nitrogen springs 2 are evenly distributed on the nitrogen spring mounting plate 3.

[0030] In order to ensure that the nitrogen spring 2 will not appear to be loaded during compression, the nitrogen spring mounting plate 3 is made of Q235 steel plate, and the upper and lower surfaces of the nitrogen spring mounting plate 3 are subjected to flat grinding and finishing treatment.

[0031] In order to ensure that the nitrogen spring 2 does not appear to be loaded, and to ensure the service life of the pressurizing table 1, the pressurizing table 1 is made of Q235 steel plate and subjected to flat grinding treatment on the upper and lower surfaces, and the remaining outer surface is sprayed with anti-rust paint.

[0032] In order to increase the detection effect, the pressurizing table 1 is lightened by being hollowed out in the middle.

[0033] In order to increase the stability of the device, the pressurizing table 1 and the upper worktable 4 are fixed by high-strength bolt and nut 5 through T-shaped groove.

[0034] In order to further increase the stability of the device, the nitrogen spring mounting plate 3 and the lower worktable 6 are fixed by high-strength bolt and nut 5 through T-shaped groove.

[0035] In order to ensure that the detection does not deviate and ensure the fixation of the nitrogen spring 2, the nitrogen spring 2 is fixed and mounted on the nitrogen spring mounting plate 3 by screw.

[0036] The actual operation process of the nitrogen spring simulation load system device is as follows: the press body 7 is operated, the upper worktable 4 is moved to the lower dead point, then the hand wheel adjusts the fine adjustment mechanism of the press, the nitrogen spring loading system pressurizing table 1 and the upper surface of the nitrogen spring 2 are just closed, the closing height value at this time is recorded, and the point of pressure value 0 is recorded; the press body 7 is operated again, the upper worktable 4 is moved to the upper dead point, and the slider fine adjustment down value (for example, down 1mm) is set on the basis of the closing height value through the man-machine interface, after the setting is completed, the press body 7 is operated again. When the upper worktable 4 drives the pressurizing table 1 and the nitrogen spring 2 to close, continue to down a stroke (exactly 1mm set down), the load value of the press body 7 will change, through the PLC connected to the man-machine interface, the performance parameter settings of the servo motor and the servo driver at the nominal force stroke 1mm can be implemented to check whether the servo motor and the servo driver adapt to this state. Repeat the above operation, set the down value multiple times (the value range should be within the nominal force stroke range of the press), and verify whether the servo performance parameter value is consistent with our setting, and make corresponding optimization adjustment.

[0037] The purpose of the present application is to provide a simulation load system device for servo press performance detection, which provides a stroke-adjustable flexible load for servo performance test of servo press within the nominal force stroke range, and also verifies whether the servo motor and servo driver parameter settings are adapted or not, and provides reliable simulation and scientific basis for actual production process. This simulation load system device provides reliable experimental means and methods for mechanical presses before leaving the factory or new production processes before implementation, and can also be used as a simulation load in the development of molds in scientific research institutions to overcome the data error caused by uncontrollable traditional load stroke.

[0038] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A nitrogen gas spring simulated load system device for performance detection of a servo press, comprising a press body (7), characterized in that: The press body (7) comprises an upper worktable (4) and a lower worktable (6), the lower surface of the upper worktable (4) is fixedly provided with a pressurizing table (1), the upper surface of the lower worktable (6) is fixedly provided with a nitrogen spring mounting plate (3), and the upper surface of the nitrogen spring mounting plate (3) is fixedly provided with a plurality of nitrogen springs (2).

2. The nitrogen gas spring simulated load system device for performance detection of servo press according to claim 1, characterized in that: The nitrogen spring (2) has a stroke of 2-3 mm greater than the nominal stroke of the press body (7), and the spring pressure of the nitrogen spring (2) is 15%-20% greater than the stamping force calculated based on the nominal tonnage of the press body (7).

3. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The nitrogen springs (2) are uniformly distributed on the nitrogen spring mounting plate (3).

4. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The nitrogen spring mounting plate (3) is made of a Q235 steel plate, and the upper and lower surfaces of the nitrogen spring mounting plate (3) are subjected to flat grinding and finishing treatment.

5. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The pressurizing table (1) is made of a Q235 steel plate, the upper and lower surfaces of the pressurizing table (1) are subjected to flat grinding treatment, and the remaining outer surfaces are sprayed with rust-proof paint.

6. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The pressurizing table (1) is subjected to hollowing treatment in the middle.

7. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The pressurizing table (1) and the upper worktable (4) are fixed by high-strength bolts and nuts (5) through T-shaped grooves.

8. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The nitrogen spring mounting plate (3) and the lower worktable (6) are fixed by high-strength bolts and nuts (5) through T-shaped grooves.

9. The nitrogen gas spring simulated load system device for performance testing of servo press according to claim 1, characterized in that: The nitrogen springs (2) are fixedly installed on the nitrogen spring mounting plate (3) by screws.

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