Automatic positioning device for part milling equipment

Abstract

The utility model relates to an automatic positioning device for part milling equipment, which relates to the technical field of numerical control machining, and comprises a clamping base, a mounting cavity is formed in the clamping base, a plurality of corner oil cylinders are fixedly connected to the top of the clamping base, and mounting tables are arranged on two sides of the plurality of corner oil cylinders in a lifting manner; the mounting tables are each detachably provided with a carrying piece used for containing parts. And a control panel, a driving module, a clamping force sensing module, a control module and a timing module, and an operator can input set clamping force and set clamping duration through the control panel. According to the positioning device, the clamping requirements of different parts can be met, and the usability of the positioning device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of numerical control machining technology, and in particular to an automatic positioning device for part milling equipment. Background Art

[0002] Milling is a mechanical processing method that uses a milling cutter as a tool to process the surface of an object. Milling machine tools include horizontal milling machines, vertical milling machines, gantry milling machines, copy milling machines, universal milling machines, and bar milling machines.

[0003] Common milling machine tools mainly include a machine base, on which a machine tool spindle and a positioning device for clamping and positioning the parts to be processed are installed to prevent the parts from shaking during the processing and affecting the processing accuracy of the parts.

[0004] In the prior art, the common positioning device for processing parts on CNC machine tools mainly includes a clamping base, to which a worktable is fixedly connected, and a corner cylinder is installed on the peripheral side of the worktable. The corner cylinder includes a cylinder body, a drive shaft and a pressure plate, and the corner pressure plate is fixedly connected to the shaft end of the drive shaft. When processing parts, the operator places the parts to be processed on the worktable, and the corner cylinder drives the pressure plate to rotate and press against the parts.

[0005] However, different parts have different requirements for the clamping force of the positioning device when clamping the parts. The clamping force of the existing positioning device cannot be adjusted, which makes it difficult to meet the clamping requirements of different parts. There is room for improvement. Utility Model Content

[0006] In order to ensure that the positioning device meets the clamping requirements of different parts and improve the usability of the positioning device, the present application provides an automatic positioning device for part milling equipment.

[0007] The automatic positioning device for parts milling equipment provided in this application adopts the following technical solution:

[0008] An automatic positioning device for part milling equipment includes a clamping base with a mounting cavity formed therein, a plurality of rotary cylinders fixedly connected to the top of the clamping base, mounting platforms provided on both sides of the plurality of rotary cylinders for lifting and lowering, and a detachable object carrier for placing parts on each mounting platform; and:

[0009] The control panel is installed and fixed on the frame of the CNC machine tool and is used to input the clamping force setting signal, the start signal and the clamping time setting signal;

[0010] A driving module, located in the mounting cavity, for driving the mounting platform to move toward or away from the pressure plate;

[0011] A clamping force sensing module is connected to the signal output terminal of the control panel, and is used to sense and receive the start signal, detect the clamping pressure between the pressure plate and the part, and output an actual clamping force signal;

[0012] a control module, connected to the control panel and the signal output terminal of the driving module, configured to receive and compare the actual clamping force signal and the set clamping force signal, and output a first control signal when the actual clamping force reaches the set clamping force;

[0013] a timing module, signal-connected to the signal output terminal of the control module, configured to receive the first control signal and calculate the actual clamping time, and output a second control signal when the actual clamping time reaches the set clamping time;

[0014] The signal input ends of the driving module and the corner cylinder are all connected to the signal output ends of the control panel, the control module and the timing module. The driving module and the corner cylinder receive the start signal and clamp the parts, receive the first control signal and stop, and receive the second control signal and reply.

[0015] By adopting the above technical solution, in the actual production and processing process, the operator can install the carrier matching the part on the mounting table, and input the set clamping force and clamping time through the control panel and then input the start signal. The corner cylinder receives the start signal and drives the pressure plate to rotate and move toward the direction close to the part. At the same time, the drive module drives the mounting table and the part to move up together. In this process, the clamping force sensing module senses the clamping pressure between the carrier and the drive module and outputs it as the actual clamping force. The control module compares the actual clamping force with the set clamping force. When the actual clamping force reaches the set clamping force, the control module outputs the first control signal. After receiving the first control signal, the corner cylinder and the drive module maintain the current state, so that the actual clamping force on the part is constant. The timing module calculates the actual clamping time, and when the actual clamping time reaches the set time, drives the corner cylinder and the drive module to return to the initial state, so that the operator can remove the processed parts. During the process of clamping parts, the drive module and the angle cylinder move toward the parts at the same time to clamp the parts, which can improve the efficiency of the positioning device in clamping parts; through the setting of the clamping force sensing module and the control module, the operator can adjust the clamping force of the clamped parts according to the material, thickness and other characteristics of the parts, which can effectively improve the applicability of the positioning device; through the setting of the timing module, the parts can be automatically released after processing is completed, so that the operator can remove the parts, effectively improving the convenience of the operator in using the positioning device.

[0016] Preferably, a mounting plate is provided in the mounting cavity for lifting, the bottom of the mounting platform is fixedly connected to the mounting plate, and the top of the clamping base is provided with a through hole extending from the mounting platform;

[0017] The bottom of the mounting plate is fixedly connected with a driving plate;

[0018] The driving module includes two servo motors and a driving screw rod. The two driving screw rods are rotatably installed at the bottom of the mounting cavity. The driving plate is slidably set on the two driving screw rods, and the two driving screw rods are fixedly connected with a driving ring gear. The servo motor is fixedly connected to the inner wall of the mounting cavity, and the driving shaft end of the servo motor is engaged with the driving ring gear.

[0019] By adopting the above technical solution, the two servo motors can drive the driving plate and the mounting plate fixed on the driving plate to move up and down by driving the ring gear, thereby achieving the technical effect of driving the parts to move up and down.

[0020] Preferably, a mounting rod is fixedly connected to the bottom of the object carrier, and a mounting hole for mounting the mounting rod is provided on the mounting platform;

[0021] The cross section of the carrier away from the mounting table is provided with a placement groove adapted to the part, and the clamping force sensing module includes a thin film pressure sensor, which is located at the bottom of one of the placement grooves and is pressed tightly between the carrier and the mounting table.

[0022] By adopting the above technical solution, the operator can replace the carrier according to the actual parts to be clamped through the mounting hole, so that the positioning device is suitable for clamping parts of different types and shapes, thereby improving the applicability of the positioning device; the parts are pressed against and clamped between the carrier and the pressure plate, and the thin film pressure sensor can detect the actual clamping force exerted on the parts and output the actual clamping force signal.

[0023] Preferably, the control module includes a first single-chip microcomputer, the signal input end of the first single-chip microcomputer is connected to the signal output end of the control panel and the thin film pressure sensor, the first single-chip microcomputer receives the set clamping force signal and the actual clamping force signal and outputs the first control signal when the actual clamping force reaches the set clamping force.

[0024] By adopting the above technical solution, the actual clamping force can be compared with the set clamping force through the first single-chip microcomputer, and when the actual clamping force reaches the set clamping force, the servo motor and the angle cylinder are automatically controlled to stop driving, so as to achieve the technical effect of maintaining a constant clamping force.

[0025] Preferably, the timing module includes:

[0026] a timer, signal-connected to the signal output terminal of the first single-chip microcomputer, configured to receive the first control signal, start timing, and output an actual clamping time signal;

[0027] The second single chip microcomputer is connected to the signal output end of the timer and the control panel, and is used to receive and compare the actual clamping time signal with the set clamping time signal, and output the second control signal when the clamping time reaches the set clamping time.

[0028] By adopting the above technical solution, the timer can calculate the time it takes for the clamping force on the part to reach the set clamping force state and output the actual clamping time signal. The second single-chip microcomputer receives the actual clamping time signal and compares it with the set clamping time signal. When the actual clamping time reaches the set clamping time, it can automatically control the corner cylinder and servo motor to release the part.

[0029] Preferably, both ends of the pressing plate are fixedly connected with clamping blocks, and the bottom of the clamping blocks is fixedly connected with an elastic rubber pad.

[0030] By adopting the above technical solution, the elastic rubber pad can reduce the occurrence of damage to the parts during the clamping process.

[0031] In summary, the automatic positioning device for part milling equipment of the present application has at least one of the following beneficial technical effects:

[0032] 1. Through the coordination and use of the control panel, servo motor, angle cylinder, thin film pressure sensor, and first single-chip computer, parts can be clamped according to the clamping force preset by the operator, and the current clamping pressure can be maintained after the actual clamping force reaches the set clamping force. This allows the operator to adjust the clamping pressure according to the material and structure of different parts, making the positioning device suitable for clamping parts of different materials and structures, thereby improving the usability of the positioning device;

[0033] 2. Through the coordination and use of the control panel, the first single-chip microcomputer, the timer, and the second single-chip microcomputer, it is possible to automatically detect the clamping time of the workpiece and automatically control the servo motor and the rotation of the angle cylinder when the actual clamping time reaches the set clamping time, thereby achieving the technical effect of automatically releasing the part, making it easier for the operator to remove the processed part and improving the operator's convenience in using the positioning device;

[0034] 3. By making the carrier removable, the operator can replace the carrier according to the shape of the part, further improving the usability of the positioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of an embodiment of the present application used to illustrate the overall structure of the positioning device.

[0036] Figure 2 This is a schematic diagram used to illustrate the internal signal transmission of the positioning device according to an embodiment of the present application.

[0037] Explanation of the accompanying reference numerals: 1. Clamping base; 11. Mounting cavity; 12. Mounting platform; 121. Mounting hole; 13. Object carrier; 131. Mounting rod; 132. Placement slot; 14. Mounting plate; 15. Through hole; 16. Drive plate; 2. Corner cylinder; 21. Pressure plate; 22. Clamping block; 23. Elastic rubber pad; 3. Drive module; 31. Servo motor; 32. Drive screw; 33. Drive gear ring; 4. Clamping force sensing module; 41. Thin film pressure sensor; 5. Parts. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-2 This application is described in further detail.

[0039] Example

[0040] The embodiment of the present application discloses an automatic positioning device for a parts milling equipment. Figure 1 , including a clamping base 1, a mounting cavity 11 is formed in the clamping base 1, two corner cylinders 2 are fixedly connected to the top of the clamping base 1, and mounting platforms 12 are provided on both sides of the cylinder body of the corner cylinder 2. A through hole 15 adapted to the mounting platform 12 is opened on the clamping base 1, and a mounting plate 14 is set in the mounting cavity 11 for lifting. The bottom of the mounting platform 12 is welded and fixed to the mounting plate 14, and a carrier 13 for placing the part 5 can be detachably installed on the mounting platform 12.

[0041] It should be noted that, in the actual production and processing process, the number of mounting platforms 12 and corner cylinders 2 can be increased or decreased to achieve the setting of different numbers of workstations, which will not be limited or elaborated here.

[0042] It also includes: a control panel, a driving module 3, a clamping force sensing module 4, a control module and a timing module.

[0043] The control panel is installed on the frame of the CNC machine tool by screws, and the operator can input the clamping force signal, start signal and clamping time signal through the control panel.

[0044] Reference Figure 1 and Figure 2 The drive module 3 includes two servo motors 31 and two drive screws 32. The two drive screws 32 are rotatably mounted in the mounting cavity 11. The cylinders of the two servo motors 31 are fixed to the top wall of the mounting cavity 11. The lower ends of the two drive screws 32 are coaxially sleeved and fixedly mounted with a drive ring gear 33. The drive shaft of the servo motor 31 is engaged with the drive ring gear 33. A drive plate 16 is slidably mounted on the two drive screws 32. The bottom of the mounting plate 14 is fixed to the drive plate 16 by two connecting rods, and the mounting plate 14 is provided with sliding holes for the two screws to pass through.

[0045] The signal input ends of the two corner cylinders 2 and the two servo motors 31 are all connected to the signal output ends of the control panel. After the two corner cylinders 2 and the two servo motors 31 receive the start signal, the driving shafts of the two corner cylinders 2 drive the pressure plate 21 to rotate and then drive the pressure plate 21 to move downward. At the same time, the two servo motors 31 drive the two driving screws 32 to rotate through the driving ring gear 33 to drive the driving plate 16, the mounting plate 14, the mounting platform 12, the object carrier 13 and the part 5 to move upward until the part 5 is pressed tightly between the object carrier 13 and the pressure plate 21.

[0046] Since the rotary cylinder 2 and the servo motor 31 simultaneously execute the action of clamping the part 5 , the time required for clamping the part 5 can be shortened, thereby improving the efficiency of the positioning device in clamping the part 5 .

[0047] Reference Figure 1 The bottom of the object carrier 13 is fixedly connected with a mounting rod 131, and a mounting groove adapted to the mounting rod 131 is opened on the mounting platform 12. The mounting rod 131 is inserted and fixed in the mounting groove, and a placement groove 132 adapted to the part 5 is opened on the top of the object carrier 13.

[0048] The mounting hole 121 can facilitate the operator to replace the carrier 13 according to the parts 5 actually required to be clamped, so that the positioning device is suitable for clamping parts 5 of different types and shapes, thereby improving the application range of the positioning device.

[0049] Among them, the clamping force sensing module 4 includes a thin film pressure sensor 41, which is installed at the bottom of any placement groove 132, and the thin film pressure sensor 41 is tightly pressed between the pressure plate 21 and the bottom of the placement groove 132. The thin film pressure sensor 41 can detect the actual clamping force exerted on the part 5 and output the actual clamping force signal.

[0050] Reference Figure 2 In the embodiment of the present application, the signal processing module adopts a first single-chip microcomputer. The signal input end of the first single-chip microcomputer is connected to the film pressure sensor 41 and the signal output end of the single-chip microcomputer. The single-chip microcomputer receives the actual clamping force signal and compares it with the set clamping force signal. When the actual clamping force signal reaches the set clamping force, the first single-chip microcomputer outputs a first control signal.

[0051] The signal input ends of the two servo motors 31 and the two corner cylinders 2 are connected to the signal output ends of the first single-chip microcomputer. After receiving the first control signal, the two servo motors 31 stop driving the mounting platform 12 to rise, and the two corner cylinders 2 stop pulling down the pressure plate 21 after receiving the first control signal, so that the clamping force on the part 5 remains constant, thereby achieving the technical effect of automatically controlling the clamping force.

[0052] Reference Figure 2The timing module includes a timer and a second single-chip microcomputer. The signal input end of the timer is connected to the signal output end of the first single-chip microcomputer, and the signal input end of the second single-chip microcomputer is connected to the signal output end of the timer and the control panel.

[0053] When the clamping force on the part 5 reaches the set clamping force and the servo motor 31 and the corner cylinder 2 stop driving, the timer receives the first control signal and starts timing. The measured time is the actual clamping time and the actual clamping time signal is output.

[0054] The second single chip microcomputer receives the actual clamping time signal and compares it with the set clamping time signal. When the actual clamping time reaches the set clamping time, the second single chip microcomputer outputs a second control signal.

[0055] The signal input ends of the corner cylinder 2 and the servo motor 31 are also connected to the signal output ends of the second single-chip microcomputer. After receiving the second control signal, the corner cylinder 2 drives the pressure plate 21 to return to its initial position, and at the same time, the servo motor 31 drives the mounting platform 12 to return to its initial position.

[0056] It should be noted that the clamping time set in the embodiment of the present application can be determined according to the time required for actual processing. When the corner cylinder 2 receives the second control signal and drives the pressure plate 21 to return to the initial position, and at the same time the servo motor 31 drives the mounting table 12 to return to the initial position, the positioning device releases the processed part 5, which can facilitate the operator to remove the part 5, thereby improving the degree of automation of the positioning device and improving the convenience of the operator in using the positioning device.

[0057] In order to reduce the damage caused by the rotation of the pressing plate 21 during the clamping process of the part 5, refer to Figure 1 In the embodiment of the present application, the two ends of the bottom of the pressure plate 21 are respectively welded and fixed with clamping blocks 22, and the bottom of the clamping block 22 is fixed with an elastic rubber pad 23 with a nearly hemispherical shape by gluing, which can reduce the damage to the part 5 caused by the collision between the pressure plate 21 and the part 5 during the clamping process of the part 5.

[0058] The implementation principle of an automatic positioning device for part milling equipment in an embodiment of the present application is as follows: through the mutual coordination and use of the control panel, servo motor 31, corner cylinder 2, film pressure sensor 41, and first single-chip microcomputer, the part 5 can be clamped according to the set clamping force preset by the operator, and the current clamping pressure can be maintained after the actual clamping force reaches the set clamping force, which can facilitate the operator to adjust the clamping pressure according to the material and structure of different parts 5, so that the positioning device can be suitable for clamping parts 5 of different materials and structures, thereby improving the usability of the positioning device; through the mutual coordination and use of the control panel, the first single-chip microcomputer, the timer and the second single-chip microcomputer, it is possible to automatically detect the time length of clamping the workpiece, and automatically control the servo motor 31 and the corner cylinder 2 to rotate when the actual clamping time reaches the set clamping time, thereby achieving the technical effect of automatically releasing the part 5, thereby facilitating the operator to take out the processed part 5, thereby improving the convenience of the operator in using the positioning device.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic positioning device for parts milling equipment, characterized in that: The invention comprises a clamping base (1), wherein a mounting cavity (11) is formed in the clamping base (1), a plurality of angular oil cylinders (2) are fixedly connected to the top of the clamping base (1), and mounting platforms (12) are provided on both sides of the plurality of angular oil cylinders (2) for lifting, and a loading piece (13) for placing a part (5) is detachably mounted on each mounting platform (12); as well as: The control panel is installed and fixed on the frame of the CNC machine tool and is used to input the clamping force setting signal, the start signal and the clamping time setting signal; A driving module (3) is located in the mounting cavity (11) and is used to drive the mounting platform (12) to move toward or away from the pressure plate (21); A clamping force sensing module (4) is connected to the signal output terminal of the control panel, and is used to sense and receive the start signal and detect the clamping pressure between the pressure plate (21) and the part (5), and output an actual clamping force signal; A control module is connected to the control panel and the signal output terminal of the drive module (3), and is used to receive and compare the actual clamping force signal and the set clamping force signal, and output a first control signal when the actual clamping force reaches the set clamping force; a timing module, signal-connected to the signal output terminal of the control module, configured to receive the first control signal and calculate the actual clamping time, and output a second control signal when the actual clamping time reaches the set clamping time; The signal input ends of the driving module (3) and the corner oil cylinder (2) are all connected to the signal output ends of the control panel, the control module and the timing module. The driving module (3) and the corner oil cylinder (2) receive the start signal and clamp the part (5), receive the first control signal and stop, and receive the second control signal and reply.

2. The automatic positioning device for parts milling equipment according to claim 1, characterized in that: A mounting plate (14) is provided in the mounting cavity (11) for lifting, the bottom of the mounting platform (12) is fixedly connected to the mounting plate (14), and a through hole (15) extending from the mounting platform (12) is provided on the top of the clamping base (1); The bottom of the mounting plate (14) is fixedly connected to a driving plate (16); The driving module (3) includes two servo motors (31) and a driving screw (32). The two driving screws (32) are rotatably mounted at the bottom of the mounting cavity (11). The driving plate (16) is slidably mounted on the two driving screws (32). A driving ring gear (33) is fixedly connected to the two driving screws (32). The servo motor (31) is fixedly connected to the inner wall of the mounting cavity (11). The driving shaft end of the servo motor (31) is meshed with the driving ring gear (33).

3. The automatic positioning device for parts milling equipment according to claim 2, characterized in that: The bottom of the object carrier (13) is fixedly connected to a mounting rod (131), and the mounting platform (12) is provided with a mounting hole (121) for mounting the mounting rod (131); The cross section of the object carrier (13) away from the mounting platform (12) is provided with a placement groove (132) adapted to the part (5); the clamping force sensing module (4) includes a thin film pressure sensor (41); the thin film pressure sensor (41) is located at the bottom of one of the placement grooves (132); the thin film pressure sensor (41) is pressed tightly between the object carrier (13) and the mounting platform (12).

4. The automatic positioning device for parts milling equipment according to claim 3, characterized in that: The control module includes a first single-chip microcomputer, wherein a signal input terminal of the first single-chip microcomputer is connected to a signal output terminal of the control panel and the film pressure sensor (41); the first single-chip microcomputer receives the set clamping force signal and the actual clamping force signal and outputs the first control signal when the actual clamping force reaches the set clamping force.

5. The automatic positioning device for parts milling equipment according to claim 4, characterized in that: The timing module includes: a timer, signal-connected to the signal output terminal of the first single-chip microcomputer, configured to receive the first control signal, start timing, and output an actual clamping time signal; The second single chip microcomputer is connected to the signal output end of the timer and the control panel, and is used to receive and compare the actual clamping time signal with the set clamping time signal, and output the second control signal when the clamping time reaches the set clamping time.

6. The automatic positioning device for parts milling equipment according to claim 1, characterized in that: The two ends of the pressing plate (21) are fixedly connected with clamping blocks (22), and the bottom of the clamping block (22) is fixedly connected with an elastic rubber pad (23).

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