Numerical control right-angle plate shearing machine servo driving device and numerical control right-angle plate shearing machine

Abstract

The utility model provides a servo driving device of a numerical control right-angle plate shearing machine. The main bottom plate is mounted on the rack; the speed reducer mounting seat is fixedly connected with the main bottom plate; the servo motor is mounted on the speed reducer mounting seat; the speed reducer is mounted on the speed reducer mounting seat; the coupler is connected with the speed reducer; the connecting seat is mounted on the main bottom plate; the bearing seat is connected with the connecting seat, a bearing is installed in the bearing seat, and the upper end and the lower end of the bearing are sealed through a space ring and a rotary sealing ring respectively; the front end of the ball screw is matched with the bearing and the shaft sleeve respectively, and the ball screw is connected with the coupler and is locked through a precise locking nut; and the nut connecting seat is respectively connected with the ball screw and the upper knife rest. The shearing precision of the numerical control right-angle plate shearing machine can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a servo drive device for a numerically controlled right-angle plate shearing machine and a numerically controlled right-angle plate shearing machine. Background Art

[0002] At present in the market, the main drive structures of numerically controlled right-angle plate shearing machines mainly include several forms such as hydraulic type, clutch type, single-point servo ball head type, four-point servo drive type and double drive type. However, with the development of sheet metal processing and automation technology, the precision requirements for the shearing quality of sheets are getting higher and higher, and the main drive structures of existing numerically controlled right-angle plate shearing machines can no longer meet the market requirements. Summary of the Utility Model

[0003] The utility model provides a servo drive device for a numerically controlled right-angle plate shearing machine and a numerically controlled right-angle plate shearing machine to effectively improve the shearing precision of the numerically controlled right-angle plate shearing machine in order to solve the above technical problems.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A servo drive device for a numerically controlled right-angle plate shearing machine, characterized by comprising: a frame; a main base plate, the main base plate is installed on the frame; a reducer mounting seat, the reducer mounting seat is fixedly connected with the main base plate; a servo motor, the servo motor is installed on the reducer mounting seat; a reducer, the reducer is installed on the reducer mounting seat; a coupling, the coupling is connected with the reducer; a connecting seat, the connecting seat is installed on the main base plate; a bearing seat, the bearing seat is connected with the connecting seat, a bearing is installed in the bearing seat, and the upper and lower ends of the bearing are respectively sealed with a spacer ring and a rotary seal ring; a ball screw, the front end of the ball screw is respectively fitted with the bearing and a bushing, the ball screw is connected with the coupling and locked by a precision locking nut; a nut connecting seat, the nut connecting seat is respectively connected with the ball screw and the upper tool rest.

[0006] In an embodiment of the utility model, the connection point position between the ball screw and the upper tool rest is a fixed position, and the fixed position is the optimal position.

[0007] In an embodiment of the utility model, the material adopted by the nut connecting seat is nodular cast iron.

[0008] In an embodiment of the utility model, the nut of the ball screw and the nut connecting seat are fastened by a nut gland.

[0009] In an embodiment of the utility model, the nut connecting seat includes upper and lower parts, and an arc surface support connection structure is adopted at the connection surface of the upper and lower parts of the nut connecting seat.

[0010] A numerically controlled right-angle plate shearing machine includes the above-mentioned servo drive device of the numerically controlled right-angle plate shearing machine.

[0011] Advantages of the present utility model:

[0012] By analyzing the connection point between the ball screw and the upper tool holder, the present utility model obtains the position where the stress state of the ball screw is the best, and drives the ball screw to rotate through a servo motor, so that the ball screw drives the upper tool holder to perform reciprocating up and down movements. Thus, the shearing accuracy of the numerically controlled right-angle plate shearing machine can be effectively improved. Description of the drawings

[0013] Figure 1 It is a schematic structural diagram of the servo drive device of the numerically controlled right-angle plate shearing machine according to an embodiment of the present utility model;

[0014] Figure 2 It is a top view screenshot of the ball screw at analysis points 1-8 according to an embodiment of the present utility model;

[0015] Figure 3 It is a bottom view screenshot of the ball screw at analysis points 9-16 according to an embodiment of the present utility model;

[0016] Figure 4 It is a schematic diagram of the displacement values of analysis points 1-8 in the horizontal X-axis direction at 6 positions according to an embodiment of the present utility model;

[0017] Figure 5 It is a schematic diagram of the displacement values of analysis points 9-16 in the horizontal X-axis direction at 6 positions according to an embodiment of the present utility model;

[0018] Figure 6 It is a schematic diagram of the displacement values of analysis points 1-8 in the horizontal Y-axis direction at 6 positions according to an embodiment of the present utility model;

[0019] Figure 7 It is a schematic diagram of the displacement values of analysis points 9-16 in the horizontal Y-axis direction at 6 positions according to an embodiment of the present utility model. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Figure 1This is a schematic structural diagram of the servo drive device of the numerical control right-angle shearing machine according to the embodiment of the present utility model.

[0022] As Figure 1 shown, the servo drive device of the numerical control right-angle shearing machine according to the embodiment of the present utility model includes: a frame 1, a main base plate 2, a reducer mounting seat 3, a servo motor 4, a reducer 5, a coupling 6, a connecting seat 7, a bearing seat 8, a ball screw 9 and a nut connecting seat 10. Among them, the main base plate 2 is installed on the frame 1; the reducer mounting seat 3 is fixedly connected to the main base 2 plate; the servo motor 4 is installed on the reducer mounting seat 3; the reducer 5 is installed on the reducer mounting seat 3; the coupling 6 is connected to the reducer 5; the connecting seat 7 is installed on the main base plate 2; the bearing seat 8 is connected to the connecting seat 7, and bearings are installed in the bearing seat 8, and the upper and lower ends of the bearings are sealed with spacer rings and rotary seals respectively; the front end of the ball screw 9 is respectively fitted with a bearing and a bushing, the ball screw 9 is connected to the coupling 6 and locked with a precision lock nut; the nut connection floating mechanism 10 is respectively connected to the ball screw 9 and the upper tool rest 11.

[0023] Specifically, when the control system of the numerical control right-angle shearing machine sends an instruction to the servo motor 4, the servo motor 4 starts to work and drives the ball screw 9 to rotate. The upper tool rest 11 can be connected to the nut connecting seat 10 through screw fasteners, and the nut connecting seat 10 is connected to the ball screw 9. As the ball screw 9 and the nut connecting seat 10 move up and down reciprocally synchronously, the upper tool rest 11 also moves up and down reciprocally through the nut connecting seat 10. At the same time, the upper tool rest 11 shears the sheet material during the downward movement.

[0024] In an embodiment of the present invention, as Figure 2 and Figure 3 shown, the upper end face of the ball screw 9 can be divided into 1-8 analysis points, and the lower end face of the ball screw 9 can be divided into 9-16 analysis points. During the shearing process of the numerical control right-angle shearing machine, 6 positions are selected as the connection points between the ball screw 9 and the upper tool rest 11, and the connection points between the ball screw 9 and the upper tool rest 11 are switched multiple times for comparative analysis, so as to obtain the optimal position. Among them, Figures 4 to 7 are respectively the displacement values of the analysis points 1-8 in the X-axis and Y-axis directions and the displacement values of the analysis points 9-16 in the X-axis and Y-axis directions.

[0025] In an embodiment of the present utility model, the connection point between the ball screw 9 and the upper tool rest 11 can be a fixed position, and the fixed position can be the optimal position, that is, through multiple analyses of the position of the connection point between the ball screw 9 and the upper tool rest 11, the optimal connection position is obtained. At the optimal position, the stress state of the ball screw 9 is the best, and there is no obvious torsional deformation during the shearing work.

[0026] In an embodiment of the present utility model, the nut connecting seat 10 can be made of ductile iron, and the ball screw 9 and the nut connecting seat 10 can be fastened by a special nut gland, so as to reduce the impact vibration during the shearing process of the numerical control right-angle shearing machine, protect the ball screw 9, and further improve the service life of the ball screw 9.

[0027] In an embodiment of the present utility model, the nut connecting seat 10 can include upper and lower parts, and an arc surface support connection structure can be adopted at the connection surface of the upper and lower parts of the nut connecting seat 10, which can effectively relieve the radial offset effect of the shear force component on the ball screw 9 during the shearing process, and further reduce the deformation of the ball screw 9.

[0028] The numerical control right-angle shearing machine according to the embodiment of the present utility model includes the numerical control right-angle shearing machine servo drive device proposed in the above embodiment of the present utility model. The specific implementation manner can refer to the above embodiment. To avoid redundancy, it will not be described in detail here.

[0029] According to the numerical control right-angle shearing machine servo drive device of the embodiment of the present utility model, the position with the best stress state of the ball screw is obtained by analyzing the connection point between the ball screw and the upper tool rest, and the ball screw is driven to rotate by the servo motor, so that the ball screw drives the upper tool rest to perform reciprocating up and down movements. Thus, the shearing accuracy of the numerical control right-angle shearing machine can be effectively improved.

[0030] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "plurality" is two or more, unless otherwise specifically defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher level height than the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower level height than the second feature.

[0033] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not have to refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0034] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A servo drive device for a CNC right-angle shearing machine, characterized in that: include: frame; A main base plate, the main base plate is installed on the frame; A reducer mounting seat, the reducer mounting seat is fixedly connected to the main base plate; a servo motor, the servo motor is mounted on the reducer mounting seat; a reducer, the reducer is mounted on the reducer mounting seat; a coupling, the coupling is connected to the reducer; a connecting seat, the connecting seat is installed on the main base plate; a bearing seat, the bearing seat is connected to the connecting seat, a bearing is installed in the bearing seat, and the upper and lower ends of the bearing are respectively sealed with a spacer ring and a rotating sealing ring; a ball screw, the front ends of the ball screw are respectively matched with the bearing and the sleeve, the ball screw is connected to the coupling, and is locked by a precision locking nut; a nut connecting seat, the nut connecting seat is respectively connected to the ball screw and the upper tool holder.

2. The servo drive device for a CNC right-angle shearing machine according to claim 1 is characterized in that: The connection point between the ball screw and the upper tool holder is a fixed position, and the fixed position is an optimal position.

3. The servo drive device for the CNC right-angle shearing machine according to claim 2 is characterized in that: The material adopted for the nut connection seat is ductile iron.

4. A CNC right angle shearing machine, characterized in that: A servo drive device for a CNC right-angle shearing machine comprising any one of claims 1 to 3.

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