Pressing frame mechanism of centerless lathe

Abstract

The pressing frame mechanism of the centerless lathe comprises a pressing frame clamping device, and the pressing frame clamping device comprises a supporting bottom plate, a supporting frame, a bar workpiece, a lower pinch roll, an upper pinch roll, a transmission shaft, an outer cover, a sliding adjusting plate, a pressure sensor, a fixing plate, a speed reducer and a controller. The supporting frames are symmetrically and fixedly connected to the top end of the supporting bottom plate, the transmission shafts are rotationally connected to the supporting frames through rotating shafts, the outer covers are fixedly installed on one sides of the supporting frames, and the sliding adjusting plates are slidably connected to the interiors of the supporting frames. The pressure sensor is fixedly installed in the middle of the top end of the sliding adjusting plate. By setting a pressure threshold value for the controller and matching the pressure sensor with the controller, intelligent adjustment of clamping force is achieved, it can be ensured that a bar workpiece is subjected to constant and appropriate clamping force in the machining process, and machining precision and stability are improved.

Description

Technical Field

[0001] The utility model relates to the field of centerless lathes, in particular to a frame pressing mechanism of a centerless lathe. Background Art

[0002] The traditional centerless lathe holding mechanism often has the problem of insufficient or excessive clamping force when clamping the workpiece, which causes the workpiece to be offset, deformed or damaged during the processing, seriously affecting the processing quality and efficiency. Therefore, a centerless lathe holding mechanism is urgently needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a press frame mechanism for a centerless lathe to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a press frame mechanism of a centerless lathe, including a press frame clamping device, the press frame clamping device includes a supporting base plate, a supporting frame, a bar workpiece, a lower clamping roller, an upper clamping roller, a transmission shaft, an outer cover, a sliding adjustment plate, a pressure sensor, a fixed plate, an electric push rod, a motor, a reducer and a controller, the supporting frame is symmetrically fixedly connected to the top of the supporting base plate, the transmission shaft is rotatably connected to the supporting frame through a rotating shaft, the outer cover is fixedly installed on one side of the supporting frame, the sliding adjustment plate is slidably connected to the inside of the supporting frame, the pressure sensor is fixedly installed in the middle of the top of the sliding adjustment plate, and the fixed plate is evenly fixedly connected The electric push rod is connected to the inner side of the top end of the support frame, the electric push rod is fixedly connected to the inside of the fixed plate, the lower pinch roller is fixedly connected to the outer side of the end of the transmission shaft away from the outer cover, the upper pinch roller is fixedly connected to the side of the sliding adjustment plate away from the outer cover at one end close to the support frame, the bar workpiece is arranged between the lower pinch roller and the upper pinch roller, the two motors are evenly fixedly installed on the top end of the support base plate, the two reducers are evenly fixedly installed on the top end of the support base plate, the controller is fixedly installed on the top end of the support base plate, the reducer is located on one side of the motor, and the controller is located on the side of the reducer away from the sliding adjustment plate.

[0005] Preferably, the outer sides of the lower pinch roller and the upper pinch roller are designed to be concave arc-shaped.

[0006] Preferably, the telescopic end of the electric push rod is fixedly connected to the middle of the top end of the sliding adjustment plate, and the sensing end of the pressure sensor is in close contact with the telescopic end of the electric push rod.

[0007] Preferably, one end of the transmission shaft close to the sliding adjustment plate is fixedly connected to the output end of the reducer, and the output end of the motor is fixedly connected to the input end of the reducer.

[0008] Preferably, the controller is electrically connected to the pressure sensor, the electric push rod and the motor respectively.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model realizes intelligent adjustment of the clamping force through the cooperation of the pressure sensor and the controller. By setting the pressure threshold value of the controller, it can ensure that the bar workpiece is subjected to a constant and appropriate clamping force during the processing, avoiding the workpiece deviation or damage caused by insufficient or excessive clamping force, and improving the processing accuracy and stability. Through the design of the electric push rod and the sliding adjustment plate, the upper clamping roller can quickly and accurately press down, and cooperate closely with the lower clamping roller to firmly clamp the bar workpiece in the middle. At the same time, the reducer and transmission shaft driven by the motor drive the lower clamping roller to rotate, thereby driving the bar workpiece to move smoothly, realizing an efficient, stable and continuous clamping and conveying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the press frame clamping device in the utility model;

[0013] Figure 3 It is a schematic diagram of the structure of the press frame clamping device in the utility model;

[0014] Figure 4 It is a partial structural schematic diagram of the press frame clamping device in the utility model.

[0015] In the figure: 1-pressing frame clamping device, 2-supporting bottom plate, 3-supporting frame, 4-bar workpiece, 5-lower pinch roller, 6-upper pinch roller, 7-transmission shaft, 8-outer cover, 9-sliding adjustment plate, 10-pressure sensor, 11-fixed plate, 12-electric push rod, 13-motor, 14-reducer, 15-controller. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4, the utility model provides an embodiment: a press frame mechanism of a centerless lathe, including a press frame clamping device 1, the press frame clamping device 1 includes a supporting base plate 2, a supporting frame 3, a bar workpiece 4, a lower clamping roller 5, an upper clamping roller 6, a transmission shaft 7, an outer cover 8, a sliding adjustment plate 9, a pressure sensor 10, a fixed plate 11, an electric push rod 12, a motor 13, a reducer 14 and a controller 15, the supporting frame 3 is symmetrically fixedly connected to the top of the supporting base plate 2, the transmission shaft 7 is rotatably connected to the supporting frame 3 through a rotating shaft, the outer cover 8 is fixedly installed on one side of the supporting frame 3, the sliding adjustment plate 9 is slidably connected to the inside of the supporting frame 3, and the pressure sensor 10 is fixedly installed in the middle of the top of the sliding adjustment plate 9, The fixed plate 11 is evenly fixedly connected to the inner side of the top end of the support frame 3, the electric push rod 12 is fixedly connected to the inside of the fixed plate 11, the lower clamping roller 5 is fixedly connected to the outer side of the end of the transmission shaft 7 away from the outer cover 8, the upper clamping roller 6 is fixedly connected to the side of the sliding adjustment plate 9 away from the outer cover 8 at one end close to the support frame 3, the bar workpiece 4 is arranged between the lower clamping roller 5 and the upper clamping roller 6, the two motors 13 are evenly fixedly installed on the top of the support base plate 2, the two reducers 14 are evenly fixedly installed on the top of the support base plate 2, the controller 15 is fixedly installed on the top of the support base plate 2, and the reducer 14 is located on one side of the motor 13, and the controller 15 is located on the side of the reducer 14 away from the sliding adjustment plate 9.

[0018] The outer sides of the lower pinch roller 5 and the upper pinch roller 6 are designed to be concave arc-shaped, which is convenient for the precise clamping and conveying operation of the round bar workpiece 4.

[0019] The telescopic end of the electric push rod 12 is fixedly connected to the middle of the top end of the sliding adjustment plate 9, and the sensing end of the pressure sensor 10 is close to the telescopic end of the electric push rod 12. When the bottom end of the upper clamping roller 6 contacts the top end of the bar workpiece 4, the telescopic end of the electric push rod 12 squeezes the sensing end of the pressure sensor 10. When the pressure sensor 10 detects pressure, it transmits the pressure signal to the controller 15.

[0020] One end of the transmission shaft 7 close to the sliding adjustment plate 9 is fixedly connected to the output end of the reducer 14, and the output end of the motor 13 is fixedly connected to the input end of the reducer 14. The motor 13 transmits power to the transmission shaft 7 through the deceleration of the reducer 14, and drives the lower clamping roller 5 to rotate continuously and stably through the transmission shaft 7.

[0021] The controller 15 is electrically connected to the pressure sensor 10 , the electric push rod 12 and the motor 13 respectively, so as to control the extension degree of the electric push rod 12 by the pressure signal transmitted from the pressure sensor 10 to the controller 15 , thereby achieving the tightness of clamping the bar workpiece 4 .

[0022] Working principle: During use, the pressure threshold and the control instruction program are first transmitted to the controller 15 through the computer, and the bar workpiece 4 is placed on the top of the two lower pinch rollers 5 through external force. Then, the controller 15 controls the electric push rod 12 to extend, and the extended end of the electric push rod 12 drives the sliding adjustment plate 9 to slide downward, and the sliding of the sliding adjustment plate 9 drives the upper pinch roller 6 to move downward. When the bottom end of the upper pinch roller 6 contacts the top of the bar workpiece 4, the controller 15 receives the pressure signal transmitted by the pressure sensor 10. When the pressure signal data reaches the preset threshold, the controller 15 controls the electric push rod 12 to stop extending. At this time, the bottom end of the upper pinch roller 6 is close to the top end of the bar workpiece 4. At this time, the bar workpiece 4 is clamped in the middle by the lower pinch roller 5 and the upper pinch roller 6. Then the controller 15 controls the motor 13 to start, and the output end of the motor 13 drives the reducer 14 to operate. The output end of the reducer 14 drives the transmission shaft 7 to rotate, and the rotation of the transmission shaft 7 drives the lower pinch roller 5 to rotate. Since the bar workpiece 4 is clamped by the lower pinch roller 5 and the upper pinch roller 6, under the action of friction, the rotation of the lower pinch roller 5 drives the bar workpiece 4 to move, and the movement of the bar workpiece 4 drives the upper pinch roller 6 to roll on the bar workpiece 4, thereby realizing the clamping and conveying of the bar workpiece 4.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A press frame mechanism for a centerless lathe, comprising a press frame clamping device (1), characterized in that: The press frame clamping device (1) comprises a supporting base plate (2), a supporting frame (3), a bar workpiece (4), a lower clamping roller (5), an upper clamping roller (6), a transmission shaft (7), an outer cover (8), a sliding adjustment plate (9), a pressure sensor (10), a fixed plate (11), an electric push rod (12), a motor (13), a reducer (14) and a controller (15); the supporting frame (3) is symmetrically fixedly connected to the top of the supporting base plate (2); the transmission shaft (7) is rotatably connected to the supporting frame (3) through a rotating shaft; the outer cover (8) is fixedly installed on one side of the supporting frame (3); the sliding adjustment plate (9) is slidably connected to the inside of the supporting frame (3); the pressure sensor (10) is fixedly installed at the middle of the top of the sliding adjustment plate (9); the fixed plate (11) is evenly fixedly connected to the inner side of the top of the supporting frame (3); the electric push rod (12) is symmetrically fixedly connected to the top of the supporting base plate (2); the transmission shaft (7) is rotatably connected to the supporting frame (3) through a rotating shaft; the outer cover (8) is fixedly installed on one side of the supporting frame (3); the sliding adjustment plate (9) is slidably connected to the inside of the supporting frame (3); the pressure sensor (10) is fixedly installed at the middle of the top of the sliding adjustment plate (9); the fixed plate (11) is evenly fixedly connected to the inner side of the top of the supporting frame (3); The push rod (12) is fixedly connected to the inside of the fixed plate (11), the lower pinch roller (5) is fixedly connected to the outer side of one end of the transmission shaft (7) away from the outer cover (8), the upper pinch roller (6) is fixedly connected to one end of the support frame (3) on the side of the sliding adjustment plate (9) away from the outer cover (8), the bar workpiece (4) is arranged between the lower pinch roller (5) and the upper pinch roller (6), the two motors (13) are evenly fixedly installed on the top of the support base plate (2), the two reducers (14) are evenly fixedly installed on the top of the support base plate (2), the controller (15) is fixedly installed on the top of the support base plate (2), and the reducer (14) is located on one side of the motor (13), and the controller (15) is located on the side of the reducer (14) away from the sliding adjustment plate (9).

2. The press frame mechanism of a centerless lathe according to claim 1, characterized in that: The outer sides of the lower pinch roller (5) and the upper pinch roller (6) are designed to be concave arc-shaped.

3. The press frame mechanism of a centerless lathe according to claim 2, characterized in that: The telescopic end of the electric push rod (12) is fixedly connected to the middle of the top end of the sliding adjustment plate (9), and the sensing end of the pressure sensor (10) is in close contact with the telescopic end of the electric push rod (12).

4. The press frame mechanism of a centerless lathe according to claim 3, characterized in that: One end of the transmission shaft (7) close to the sliding adjustment plate (9) is fixedly connected to the output end of the reducer (14), and the output end of the motor (13) is fixedly connected to the input end of the reducer (14).

5. The press frame mechanism of a centerless lathe according to claim 4, characterized in that: The controller (15) is respectively electrically connected to the pressure sensor (10), the electric push rod (12) and the motor (13) by wires.

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