Novel all-electric servo bending device

Abstract

The utility model provides a novel all-electric servo bending device. The device comprises a main rack; the sliding block is installed on the main machine frame in a sliding mode and used for bending a workpiece. The nut seat is mounted on the sliding block; the screw rod is in threaded connection with the nut column; the driving assembly is used for driving the lead screw to rotate so that the sliding block can move up and down. The limiting assembly is installed on the main machine frame through a support, and the driving assembly is installed on the driving assembly so that the lead screw can rotate stably. The driving assembly is directly connected with the lead screw, a synchronous wheel mechanism is omitted, the problems that the noise of the synchronous wheel mechanism is large and the positioning error is large are solved, a gap of a bearing in the limiting assembly is locked through the limiting assembly, and compared with a synchronous wheel mechanism adopted in the prior art, positioning is more accurate, and the problem that the precision of the bending angle of a workpiece is out of tolerance is solved; and the device has the characteristics of low noise, small repeated positioning error, simple and reliable mechanism and lower cost.

Description

Technical Field

[0001] The present application relates to a bending machine, and in particular to a novel all-electric servo bending device. Background Art

[0002] The main difference between the all-electric servo CNC bending machine and the general hydraulic CNC bending machine is that all motion axes are controlled by electric servo motors and rolling screws, and the hydraulic system is cancelled, and hydraulic oil is not used. The all-electric servo bending machine converts the rotational motion of the servo motor into linear motion, and outputs the bending pressure for bending the workpiece;

[0003] Most of the existing bending machines use synchronous wheel rotation to drive the bending machine slider to move. First, the current mainstream synchronous wheel mechanism will generate noise when rotating at high speed. When the fast-forward speed of the bending machine slider is within 100mm / s, the noise is less than 70 decibels, but as the speed increases, the noise becomes louder and louder. When the fast-forward speed of the bending machine slider rises to 200mm / s, a large and sharp noise is generated, and the noise is greater than 80 decibels. This noise level has exceeded the allowable requirements of the CNC machine tool standard; second, the synchronous belt of the synchronous wheel mechanism will be pulled up more when overloaded, and different stretching amounts will be generated with temperature rise. In addition, the reverse clearance generated by forward and reverse rotation is also large, which will increase the repeated positioning error and cause the workpiece bending angle accuracy to exceed the tolerance. Utility Model Content

[0004] The embodiment of the present application provides a new all-electric servo bending device to solve the problems existing in the related technology. The technical solution is as follows:

[0005] The embodiment of the present application provides a novel all-electric servo bending device, comprising:

[0006] Main frame;

[0007] A slider is slidably mounted on the main frame and is used to bend the workpiece;

[0008] A nut seat, the nut seat is mounted on the slide block;

[0009] A screw rod, the screw rod is threadedly connected with a nut column;

[0010] A driving assembly, which is used to drive the screw rod to rotate so as to move the slider up and down;

[0011] The limit assembly is installed on the main frame through a bracket, and the drive assembly is installed on the drive assembly to ensure smooth rotation of the lead screw.

[0012] In one embodiment,

[0013] The drive components include:

[0014] The reducer, the housing and the limit assembly of the reducer can be detachably installed, and the output shaft of the reducer is fixedly connected with the screw rod;

[0015] The servo motor is detachably mounted on the housing of the reducer, and the output shaft of the servo motor is connected to the reducer.

[0016] In one embodiment,

[0017] The limiter components include:

[0018] The bearing seat is fixedly mounted on the main frame through a bracket, and a through hole is provided in the bearing seat;

[0019] The combined bearing is located in the through hole and is sleeved on the screw rod to radially limit the rotation of the screw rod.

[0020] In one embodiment,

[0021] Combined bearings include:

[0022] A mounting seat, the mounting seat is fixedly sleeved on the screw rod;

[0023] Deep groove ball bearing, the deep groove ball bearing is sleeved on the mounting seat;

[0024] Thrust ball bearing, the thrust ball bearing is sleeved on the mounting seat, and the thrust ball bearing is located outside the deep groove ball bearing;

[0025] The locking nut is threadedly connected to the mounting seat to eliminate the axial reverse clearance between the deep groove ball bearing and the thrust ball bearing.

[0026] In one embodiment,

[0027] The slide block is provided with a groove for the screw rod to move.

[0028] In one embodiment,

[0029] One end of the lead screw away from the reducer is connected to a limit block.

[0030] In one embodiment,

[0031] A transverse pressing plate inlay strip and a vertical pressing plate inlay strip are installed on the main frame, and both the transverse pressing plate inlay strip and the vertical pressing plate inlay strip are located at the connection between the slider and the main frame to prevent the slider from swinging during movement.

[0032] In one embodiment,

[0033] A slider transverse block is installed on the side of the bracket facing the slider, and a plurality of protrusions are connected to the slider transverse block. The plurality of protrusions are evenly divided into two vertical rows. The slider moves between the two rows of protrusions to limit the movement path of the slider.

[0034] In one embodiment,

[0035] A fault alarm is installed on the lateral block of the slider, and the switch of the fault alarm is located between two rows of protrusions. When the slider moves offset, the slider touches the fault alarm switch to alarm.

[0036] In one embodiment,

[0037] The bottom of the slider is connected with an upper die, and the main frame is connected with a lower die. The positions of the upper die and the lower die correspond to each other, and the workpiece is bent by driving the slider.

[0038] The advantages or beneficial effects of the above technical solution include at least:

[0039] By directly connecting the drive assembly with the lead screw and eliminating the synchronous wheel mechanism, the problems of high noise and large positioning error of the synchronous wheel mechanism are solved. The clearance of the bearing in the limit assembly is locked by the limit assembly. Compared with the existing technology, the synchronous wheel mechanism is used for more precise positioning, and the problem of excessive tolerance of the bending angle of the workpiece is reduced. It has the characteristics of low noise, small repeated positioning error, simple and reliable mechanism and low cost.

[0040] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0042] Figure 1 It is a schematic diagram of the structure of the utility model;

[0043] Figure 2 It is a side view structural schematic diagram of the utility model;

[0044] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0045] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0046] Figure 5 for Figure 1 Schematic diagram of the internal structure of the middle bearing seat;

[0047] 100. Bending device;

[0048] 110, main frame; 111, slider; 112, nut seat; 113, screw rod; 114, groove; 115, limit block; 116, horizontal pressure plate inlay; 117, vertical pressure plate inlay; 118, slider horizontal block; 1181, protrusion; 1182, switch; 119, bracket;

[0049] 120, driving assembly; 121, speed reducer; 122, servo motor;

[0050] 130. Limiting assembly; 131. Bearing seat; 132. Combined bearing; 1321. Mounting seat; 1322. Deep groove ball bearing; 1323. Thrust ball bearing; 1324. Locking nut. DETAILED DESCRIPTION

[0051] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0052] Figure 1-Figure 5 FIG. 1 shows a structural diagram of a novel all-electric servo bending device 100 according to an embodiment of the present application. Figure 1-Figure 5 As shown, the bending device 100 may include:

[0053] Main frame 110;

[0054] A slider 111, which is slidably mounted on the main frame 110 and is used to bend a workpiece;

[0055] A nut seat 112, wherein the nut seat 112 is mounted on the slider 111;

[0056] A screw rod 113, the screw rod 113 is threadedly connected with the nut column;

[0057] A driving assembly 120, the driving assembly 120 is used to drive the screw rod 113 to rotate so that the slider 111 moves up and down;

[0058] The limiting assembly 130 is mounted on the main frame 110 through the bracket 119, and the driving assembly 120 is mounted on the driving assembly 120 to ensure that the screw rod 113 rotates smoothly.

[0059] In this embodiment, the driving component 120 is directly connected to the screw rod 113. When the driving component 120 drives the screw rod 113 to rotate, under the action of the nut seat 112 on the slider 111, the slider 111 moves up and down to bend the sheet metal workpiece. When the driving component 120 drives the screw rod 113 to rotate, the limiting component 130 limits the rotation of the screw rod 113 to prevent the screw rod 113 from bending or deflecting during rotation.

[0060] By directly connecting the drive component 120 with the screw rod 113, the synchronous wheel mechanism is eliminated, which solves the problems of high noise and large positioning error of the synchronous wheel mechanism. The clearance of the bearing inside the limit component 130 is locked by the limit component 130. Compared with the prior art, the synchronous wheel mechanism is used for more precise positioning, and the problem of excessive tolerance of the bending angle of the workpiece is reduced. It has the characteristics of low noise, small repeated positioning error, simple and reliable mechanism and low cost.

[0061] like Figure 1-Figure 2 As shown, in one embodiment,

[0062] The drive assembly 120 includes:

[0063] A reducer 121, a housing of the reducer 121 and a stop assembly 130 are detachably mounted, and an output shaft of the reducer 121 is fixedly connected to the screw rod 113;

[0064] The servo motor 122 is detachably mounted on the housing of the reducer 121 , and the output shaft of the servo motor 122 is connected to the reducer 121 .

[0065] In this embodiment, when the servo motor 122 rotates, the output shaft of the servo motor 122 drives the reducer 121 to rotate, the reducer 121 housing is connected to the servo motor 122, and the reducer 121 housing is connected to the limit assembly 130, ensuring that the servo motor 122 can drive the lead screw 113 to rotate through the reducer 121, and the servo motor 122, the reducer 121 and the lead screw are directly connected. The servo motor 122 rotates to drive the slider 111 to move up and down, and the slider 111 drives the upper mold to move up and down to bend the sheet metal workpiece, thereby improving the accuracy of repeated positioning.

[0066] like Figure 1-Figure 2 as well as Figure 5 As shown, in one embodiment,

[0067] The limiting assembly 130 includes:

[0068] A bearing seat 131, the bearing seat 131 is fixedly mounted on the main frame 110 through a bracket 119, and a through hole is formed in the bearing seat 131;

[0069] The combined bearing 132 is located in the through hole and is sleeved on the screw rod 113 to radially limit the rotation of the screw rod 113 .

[0070] In this embodiment, the combined bearing 132 rotates in the bearing seat 131, which reduces the friction of the rotation of the screw rod 113. At the same time, the size of the combined bearing 132 matches the size of the through hole in the bearing seat 131, which limits the rotation of the screw rod 113 and prevents the screw rod 113 from shaking when rotating, affecting stability.

[0071] like Figure 1-Figure 2 as well as Figure 5 As shown, in one embodiment,

[0072] The combined bearing 132 comprises:

[0073] A mounting seat 1321, the mounting seat 1321 is fixedly sleeved on the screw rod 113;

[0074] A deep groove ball bearing 1322, which is sleeved on a mounting seat 1321;

[0075] A thrust ball bearing 1323, which is sleeved on the mounting seat 1321 and is located outside the deep groove ball bearing 1322;

[0076] The locking nut 1324 is threadedly connected to the mounting seat 1321 to eliminate the axial reverse clearance between the deep groove ball bearing 1322 and the thrust ball bearing 1323 .

[0077] In this embodiment, the cross-section of the mounting seat 1321 is a T-shaped structure, the deep groove ball bearing 1322 and the thrust ball bearing 1323 are sleeved on the mounting seat 1321 and locked by a locking nut 1324, the deep groove ball bearing 1322 limits the radial freedom of the screw rod 113, the thrust ball bearing 1323 bears the axial pressure of the locking nut 1324, the locking nut 1324 eliminates the axial reverse clearance, so that there is no clearance between the deep groove ball bearing 1322 and the thrust ball bearing 1323, thereby reducing the reverse clearance of the movement of the slider 111 and solving the problem of excessive accuracy of the bending angle of the workpiece caused by repeated positioning errors of the synchronous wheel mechanism.

[0078] like Figure 1-Figure 2 As shown, in one embodiment,

[0079] The slider 111 is provided with a groove 114 for the screw rod 113 to move.

[0080] In this embodiment, through the setting of the groove 114, when the screw rod 113 rotates, under the action of the nut seat 112, the screw rod 113 can move in the groove 114 to ensure the sliding trajectory of the slider 111. Furthermore, the groove 114 also has a certain limiting effect on the movement distance of the screw rod 113, and has a certain limiting effect on the movement length of the slider 111.

[0081] like Figure 1-Figure 2 As shown, in one embodiment,

[0082] One end of the screw rod 113 away from the reducer 121 is connected to the limit block 115 .

[0083] In this embodiment, by providing the limiting block 115 , when one end of the screw rod 113 rotates to the nut seat 112 , the screw rod 113 is prevented from escaping from the limiting block 115 .

[0084] like Figure 5 , in one embodiment,

[0085] A transverse pressing plate strip 116 and a vertical pressing plate strip 117 are installed on the main frame 110 . The transverse pressing plate strip 116 and the vertical pressing plate strip 117 are both located at the connection between the slider 111 and the main frame 110 to prevent the slider 111 from swinging during movement.

[0086] In this embodiment, the lateral pressure plate strip 116 limits the lateral freedom, and the vertical pressure plate strip 117 limits the vertical freedom, ensuring that the slider 111 will not deflect laterally or vertically during the up and down movement, ensuring that the screw is not subjected to lateral or vertical external forces to avoid damage.

[0087] like Figure 1 and Figure 3 As shown, in one embodiment,

[0088] A slider transverse block 118 is installed on the side of the bracket 119 facing the slider 111. A plurality of protrusions 1181 are connected to the slider transverse block 118. The protrusions 1181 are evenly divided into two vertical rows. The slider 111 moves between the two rows of protrusions 1181 to limit the movement path of the slider 111.

[0089] In this embodiment, the slider lateral block 118 is used to limit the extreme position of the slider 111 due to abnormal tilting, thereby preventing the slider 111 from being damaged due to excessive tilting, thereby preventing the screw rod 113 from being damaged.

[0090] like Figure 1 and Figure 3 As shown, in one embodiment,

[0091] A fault alarm is installed on the slider transverse block 118, and the switch 1182 of the fault alarm is located between the two rows of protrusions 1181. When the slider 111 moves and deviates, the slider 111 touches the fault alarm switch 1182 to alarm.

[0092] In this embodiment, when the sliding displacement of the slider 111 reaches the limit position, the slider 111 touches the switch 1182 and activates the fault alarm. The switch 1182 of the fault alarm is used for the fault alarm of the slider 111 due to abnormal tilt, to ensure that the screw is not subjected to excessive lateral or vertical external forces to avoid damage.

[0093] like Figure 1-Figure 2 As shown, in one embodiment,

[0094] An upper die is connected to the bottom of the slider 111 , and a lower die is connected to the main frame 110 . The positions of the upper die and the lower die correspond to each other, and the workpiece is bent by driving the slider 111 .

[0095] In this embodiment, the upper die is driven to move by the slider 111, and cooperates with the lower die on the frame to bend the sheet metal workpiece.

[0096] The functions of each module in each device of the embodiment of the present utility model can refer to the corresponding description in the above method, which will not be repeated here.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0098] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A new type of all-electric servo bending device, characterized in that: Main frame; A slider, which is slidably mounted on the main frame and is used to bend the workpiece; A nut seat, wherein the nut seat is mounted on the slider; A screw rod, the screw rod being threadedly connected to the nut column; A driving assembly, the driving assembly is used to drive the screw rod to rotate so as to move the slider up and down; A limit assembly is installed on the main frame through a bracket, and the drive assembly is installed on the drive assembly to ensure that the screw rod rotates smoothly.

2. A novel all-electric servo bending device according to claim 1, characterized in that: The drive assembly comprises: A reducer, wherein the housing of the reducer and the limit assembly are detachably mounted, and the output shaft of the reducer is fixedly connected to the screw rod; A servo motor is detachably mounted on the housing of the reducer, and an output shaft of the servo motor is connected to the reducer.

3. A novel all-electric servo bending device according to claim 2, characterized in that: The limiting component comprises: A bearing seat, the bearing seat is fixedly mounted on the main frame through a bracket, and the bearing seat has a through hole; A combined bearing is located in the through hole and sleeved on the screw rod to radially limit the rotation of the screw rod.

4. A novel all-electric servo bending device according to claim 3, characterized in that: The combined bearing comprises: A mounting seat, the mounting seat is fixedly sleeved on the screw rod; A deep groove ball bearing, wherein the deep groove ball bearing is sleeved on the mounting seat; A thrust ball bearing, wherein the thrust ball bearing is sleeved on the mounting seat and is located outside the deep groove ball bearing; A locking nut is threadedly connected to the mounting seat to eliminate the axial reverse clearance between the deep groove ball bearing and the thrust ball bearing.

5. A novel all-electric servo bending device according to claim 1, characterized in that: The sliding block is provided with a groove for the screw rod to move.

6. A novel all-electric servo bending device according to claim 2, characterized in that: One end of the screw rod away from the reducer is connected to a limiting block.

7. A novel all-electric servo bending device according to claim 1, characterized in that: A transverse pressure plate strip and a vertical pressure plate strip are installed on the main frame. The transverse pressure plate strip and the vertical pressure plate strip are both located at the connection between the slider and the main frame to prevent the slider from swinging during movement.

8. A novel all-electric servo bending device according to claim 1, characterized in that: A slider transverse block is installed on one side of the bracket facing the slider, and a plurality of protrusions are connected to the slider transverse block. The protrusions are evenly divided into two vertical rows. The slider moves between the two rows of protrusions to limit the movement path of the slider.

9. A novel all-electric servo bending device according to claim 8, characterized in that: A fault alarm is installed on the lateral blocking of the slider, and the switch of the fault alarm is located between the two rows of protrusions. When the slider moves and deviates, the slider touches the switch of the fault alarm to alarm.

10. A novel all-electric servo bending device according to claim 1, characterized in that: The bottom of the slider is connected with an upper die, the main frame is connected with a lower die, the positions of the upper die and the lower die correspond to each other, and the slider is driven to bend the workpiece.

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