Precision servo press

Abstract

The utility model discloses a precision servo press machine, including servo electric cylinder, frame, pressure sensor, pressure head, guide mechanism and displacement grating ruler, servo electric cylinder is installed on the frame, servo electric cylinder is connected with pressure head, pressure sensor is connected on pressure head, guide mechanism is installed on the frame, and the displacement grating ruler is installed on the frame. And the displacement grating ruler is connected with the guide mechanism and the pressure head. The servo electric cylinder can drive the pressure head to move so as to achieve press-fitting machining, the movement of the pressure head can be guided by the guide mechanism so as to reduce movement deviation of the pressure head in the press-fitting process and improve machining reliability, and meanwhile the pressure sensor and the displacement grating ruler are further arranged, so that the machining precision is improved. The pressure sensor and the displacement grating ruler can conveniently feed back the pressure applied by the pressure head during press fitting and the moving distance of the pressure head, the servo electric cylinder can be conveniently controlled, the working pressure and the working distance of the pressure head can be precisely adjusted, and the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of mechanical design, in particular to a precision servo press. Background Art

[0002] Press-fitting processing is a common processing procedure in production and processing. The realization of press-fitting processing mostly depends on the use of presses. The common presses on the market are mostly pneumatic or hydraulic. However, whether it is a pneumatic press or a hydraulic press, they all have problems such as slow startup speed, low transmission efficiency, risks of leakage and pollution, and high costs.

[0003] In view of the above problems, electric presses have begun to appear on the market. However, when the common electric presses are performing press-fitting processing, problems such as the offset of the press head, the failure of the press head to move in place, or the inaccurate application of pressure are likely to occur. There is an urgent need in this field to obtain an electric press with high press-fitting accuracy and strong processing reliability. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a precision servo press, which can solve one or more of the above problems.

[0005] According to one aspect of the utility model, a precision servo press is provided, which includes a servo electric cylinder, a frame, a pressure sensor, a press head, a guiding mechanism, and a displacement grating scale.

[0006] The servo electric cylinder is installed on the frame, the servo electric cylinder is connected to the press head, and the pressure sensor is connected to the press head.

[0007] The guiding mechanism is installed on the frame and is connected to the press head, and the displacement grating scale is connected to the guiding mechanism.

[0008] The beneficial effects of the utility model are as follows: In the utility model, the servo electric cylinder can drive the press head to move to realize press-fitting processing, and the movement of the press head can be guided by the guiding mechanism to reduce the movement offset during the press-fitting process and improve the processing reliability. At the same time, the utility model is also provided with a pressure sensor and a displacement grating scale, which can conveniently feedback the pressure applied by the press head during press-fitting and the moving distance of the press head, facilitating the control of the servo electric cylinder to precisely adjust the working pressure and working distance of the press head and ensure the precision of processing.

[0009] In some embodiments, the guiding mechanism includes a slider, a guide rail, a sleeve block, a connecting column and a connecting block. The bottom plate is mounted on the frame, the guide rail is mounted on the bottom plate, the slider is slidably arranged on the guide rail, the connecting block is connected to the slider, the connecting column is connected to the connecting block, and the sleeve block is sleeved on the pressing head and connected to the connecting column. The movement of the pressing head can drive the connecting block to move, and the movement of the connecting block will cause the slider to slide on the guide rail, so as to guide and limit the movement of the pressing head.

[0010] In some embodiments, the guiding mechanism includes a connecting plate and a reference member. The connecting plate is connected to the reference member, the connecting plate is connected to the connecting block, and the reference member is disposed opposite to the displacement grating scale. The movement of the connecting block will correspondingly drive the reference block to move through the connecting plate, and the displacement grating scale can sense the position change of the reference member, so as to correspondingly determine the moving distance of the pressing block.

[0011] In some embodiments, the present utility model further includes a controller, and the servo electric cylinder, the pressure sensor and the displacement grating scale are respectively electrically connected to the controller. The controller receives the signal information sensed by the pressure sensor and the displacement grating scale, and accordingly controls the operation of the servo electric cylinder automatically.

[0012] In some embodiments, the present utility model further includes a barcode scanner, and the barcode scanner is electrically connected to the controller.

[0013] In some embodiments, the present utility model further includes an audible and visual alarm. The audible and visual alarm is mounted on the frame and is electrically connected to the controller.

[0014] In some embodiments, the present utility model further includes a protective cover. The frame is provided with a processing space, the pressing head is disposed in the processing space, and the protective cover is connected to the frame and is disposed at the side of the processing space. The protective cover can protect the side of the processing space and prevent the workpiece from flying out from the side of the processing space during the press-fitting process.

[0015] In some embodiments, the present utility model further includes a safety grating scale, and the safety grating scale is connected to the protective cover. The safety grating scale can sense the moving distance of the pressing head to prevent the moving distance of the pressing head from exceeding the expectation and causing damage to other structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a precision servo press according to an embodiment of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of a precision servo press with a part of the frame hidden according to an embodiment of the present utility model.

[0018] Figure 3Schematic diagram of the structure after the connection of the servo electric cylinder, the ram, the pressure sensor and the guiding mechanism of a precision servo press according to an embodiment of the present invention.

[0019] In the figure: 1. Servo electric cylinder, 2. Frame, 3. Pressure sensor, 4. Ram, 5. Guiding mechanism, 6. Displacement grating scale, 7. Protective cover, 8. Safety grating scale, 51. Slide block, 52. Guide rail, 53. Sleeve block, 54. Connecting column, 55. Connecting block, 56. Base plate, 57. Connecting plate, 58. Reference piece, 21. Processing space Specific embodiments

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Reference Figure 1 、 Figure 2 and Figure 3 A precision servo press of the present invention includes a servo electric cylinder 1, a frame 2, a pressure sensor 3, a ram 4, a guiding mechanism 5 and a displacement grating scale 6.

[0022] The servo electric cylinder 1 is fixedly installed on the frame 2 by bolts, and the servo electric cylinder 1 is also fixedly connected to the ram 4 through a coupling, so that the servo electric cylinder 1 can drive the ram 4 to move up and down to realize the pressing action of the ram 4.

[0023] The pressure sensor 3 is fixedly connected to the ram 4 by bolts, and the pressure sensor 3 can sense the pressure during the pressing of the ram 4.

[0024] The guiding mechanism 5 includes a slide block 51, a guide rail 52, a sleeve block 53, a connecting column 54, a connecting block 55 and a base plate 56. The base plate 56 is fixedly installed on the frame 2 by bolts, and the guide rail 52 is fixedly installed on the base plate 56 by bolts. The set guide rail 52 is parallel to the action direction of the servo electric cylinder 1, so that the moving direction of the ram 4 can be parallel to the guide rail 52.

[0025] The slide block 51 is slidably sleeved on the guide rail 52. The connecting block 55 is fixedly connected to the slide block 51 by bolts. One end of the connecting column 54 is fixedly connected to the connecting block 55. One end of the sleeve block 53 is fixedly sleeved on the ram 4, and the other end of the sleeve block 53 is fixedly connected to the connecting column 55. Then the movement of the ram 4 can drive the slide block 51 to move along the guide rail 52 through the connecting column 54 and the connecting block 55.

[0026] The guiding mechanism 5 includes a connecting plate 57 and a reference piece 58. The connecting plate 57 is fixedly connected to the connecting block 55 by bolts, and the reference piece 58 is fixedly connected to the connecting plate 57 by bolts. Thus, the reference piece 58 can move with the connecting block 55 through the connecting plate 57.

[0027] The displacement grating scale 6 is fixedly connected to the bottom plate 56 by bolts, and after the reference member 58 is set, it is opposite to the displacement grating scale 6, so that the displacement grating scale 6 can effectively sense the position of the reference member 58.

[0028] The precision servo press of the present utility model further includes a protective cover 7. The frame 2 is provided with a processing space 21, and the punch 4 is arranged in the processing space 21. The protective cover 7 is fixedly connected to the frame 2 by bolts, and the protective cover 7 is arranged on the side of the processing space 21. A plurality of upright columns are also arranged in the processing space 21, and each upright column is arranged in parallel to ensure the stability of the frame 2.

[0029] The precision servo press of the present utility model further includes a safety grating scale 8. The safety grating scale 8 is fixedly connected to the protective cover 7 by bolts, and the safety grating scale 8 is also arranged in the processing space 21. The safety grating scale 8 can sense the position of the punch 4.

[0030] The precision servo press of the present utility model further includes a controller. The servo motor, the pressure sensor 3 and the displacement grating scale 6 in the servo electric cylinder 1 are respectively electrically connected to the controller through wires, so that the servo electric cylinder 1, the pressure sensor 3 and the displacement grating scale 6 can all send signals to the controller.

[0031] A display and buttons can also be connected to the controller. Thus, the display can conveniently display the parameters sensed by the pressure sensor 3 or the displacement grating scale 6, etc., and the buttons can facilitate the user to control the operation of the servo electric cylinder 1, etc.

[0032] The precision servo press of the present utility model can further include a barcode scanner, and the barcode scanner can be electrically connected to the controller through a wire.

[0033] The precision servo press of the present utility model can further include an audible and visual alarm, and the audible and visual alarm can be fixedly installed on the frame by bolts, and the audible and visual alarm can also be electrically connected to the controller through a wire.

[0034] When the present precision servo press is in use, the workpiece to be processed can be placed in the processing space 21, and the servo electric cylinder 1 can drive the punch 4 to move downwards to perform press-fitting processing on the workpiece. Moreover, when the punch 4 moves downwards, the movement of the punch 4 is guided by the guiding mechanism 5. Specifically, the movement of the punch 4 can cause the sleeve block 53 to move, then the movement of the sleeve block 53 can drive the connecting block 55 to move through the connecting column 54, and the movement of the connecting block 55 can cause the slider 51 to slide along the guide rail 52, so as to limit and guide the movement of the punch 4 by the guide rail 52.

[0035] During the press-fitting process of the indenter 4, on the one hand, the pressure sensor 3 can sense the press-fitting pressure of the indenter 4. On the other hand, the movement of the indenter 4 can correspondingly cause the connecting block 55 to move, and the movement of the connecting block 55 can correspondingly cause the reference part 58 to move through the connecting plate 57. The displacement grating ruler 6 can sense the position change of the reference part 58 to correspondingly obtain the displacement of the indenter 4. The user can correspondingly adjust the operation of the servo electric cylinder 1 according to the magnitude of the press-fitting pressure of the indenter 4 and the magnitude of the moving distance of the indenter 4 to control the press-fitting operation of the indenter 4.

[0036] It is also possible to preset the required press-fitting pressure, the required moving distance of the indenter 4, etc. in the controller. Then, the displacement signal sensed by the displacement grating ruler 6 and the pressure signal sensed by the pressure sensor 3 can be transmitted to the controller. The controller can control the operation of the servo electric cylinder 1 according to the received signals to make the working parameters of the indenter 4 tend to the preset parameters.

[0037] In addition, the safety grating ruler 8 can sense the moving distance of the indenter 4 and send the sensed signal to the controller. When it senses that the moving distance of the indenter 4 exceeds the expectation, the controller can correspondingly drive the sound and light alarm to remind the user.

[0038] The user can also scan the workpiece to be processed with a scanner to input relevant workpiece information into the controller.

[0039] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A precision servo press, characterized in that: It includes servo electric cylinder, frame, pressure sensor, pressure head, guide mechanism and displacement grating ruler. The servo electric cylinder is installed on the frame, the servo electric cylinder is connected to the pressure head, and the pressure sensor is connected to the pressure head. The guide mechanism is installed on the frame and connected to the pressure head, and the displacement grating ruler is connected to the guide mechanism.

2. A precision servo press according to claim 1, characterized in that: The guiding mechanism comprises a slider, a guide rail, a sleeve block, a connecting column, a connecting block and a base plate, wherein the base plate is mounted on a frame, the guide rail is mounted on the base plate, the slider is slidably disposed on the guide rail, the connecting block is connected to the slider, the connecting column is connected to the connecting block, the sleeve block is sleeved on the pressure head and connected to the connecting column.

3. A precision servo press according to claim 2, characterized in that: The guiding mechanism comprises a connecting plate and a reference member, wherein the connecting plate is connected to the reference member, the connecting plate is connected to the connecting block, and the reference member is arranged opposite to the displacement grating ruler.

4. A precision servo press according to claim 1, characterized in that: It comprises a controller, and the servo electric cylinder, the pressure sensor and the displacement grating ruler are electrically connected to the controller respectively.

5. A precision servo press according to claim 4, characterized in that: A barcode scanner is included, and the barcode scanner is electrically connected to the controller.

6. A precision servo press according to claim 4, characterized in that: The device comprises an audible and visual alarm, which is installed on a frame and is electrically connected to a controller.

7. The precision servo press according to claim 1, characterized in that: It comprises a protective cover, the frame is provided with a processing space, the pressure head is arranged in the processing space, the protective cover is connected with the frame and arranged on the side of the processing space.

8. A precision servo press according to claim 7, characterized in that: The utility model comprises a safety grating ruler, wherein the safety grating ruler is connected with the protective cover.

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