Three-head milling machine for machining automobile parts

Abstract

The utility model discloses a three-head milling machine for machining automobile parts. The three-head milling machine comprises a milling machine seat and a self-fixing rotating mechanism, a longitudinal moving seat is connected in a sliding groove formed in the upper side of the milling machine seat in a sliding manner; the self-fixing rotating mechanism comprises an electric rotating table, a first rotating shaft, a storage base, first electric-hydraulic push rods, a pressing plate and a laser range finder, the electric rotating table is arranged on the upper side of the longitudinal moving base, the rotating end of the electric rotating table is provided with the storage base through the first rotating shaft, and the first electric-hydraulic push rods are evenly distributed on the outer side of the storage base; according to the three-head milling machine for machining the automobile parts, the automobile parts can be automatically centered, clamped and fixed through the control element and the detection element, manual fixing is not needed, the automation degree is high, the machining precision is high, the machining precision is high, and the machining efficiency is high. And the device can automatically carry out horizontal conversion on the milling machine machining surface of the automobile part according to the use requirement, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile part processing, in particular to a three-head milling machine for automobile part processing. Background Technique

[0002] Automobile parts refer to all parts and components except the automobile frame. During the processing of automobile parts, the surface is processed by a milling machine. When there are many processing surfaces of automobile parts, a three-head milling machine is usually used. By performing milling operations on multiple parts of the automobile parts simultaneously, the processing speed can be improved. Some three-head milling machines include a multi-axis milling machine body. Milling cutters are installed on the upper side, left side, and right side of the multi-axis milling machine body. The milling cutters are all controlled by drive motors. A control console is arranged on one side of the multi-axis milling machine body. The multi-axis milling machine body is equipped with a bottom row frame. A bracket is arranged on the top of the bottom row frame. A workpiece clamping mechanism is arranged at the top of the bracket. The clamping workpiece consists of a bidirectional lead screw, two clamping plates, and a handwheel. When in use, the automobile part is placed on the bracket, and then the handwheel is rotated to drive the bidirectional lead screw to rotate. The two clamping plates approach each other through threaded connection, so as to fix the automobile part for milling processing. Then, the drive motor is driven by the control console to drive the milling cutter to rotate, so as to perform milling processing on the surface of the automobile part. However, when the device fixes the automobile part, it is realized manually, with low automation degree, increasing the labor intensity of the staff. And when the milling processing surface of the automobile part is changed later, the staff needs to remove it to replace the processing surface and clamp it again. The operation is rather cumbersome and needs to be improved. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a three-head milling machine for automobile part processing. The device can automatically center and clamp the automobile part through control elements and detection elements, without manual fixing, with high automation degree. And the device can automatically horizontally change the milling processing surface of the automobile part according to the use requirements, with convenient operation, and can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A three-head milling machine for automobile part processing, including a milling machine base and a self-fixing rotation mechanism;

[0005] Milling machine base: A longitudinal movement base is slidably connected in a chute opened on the upper side thereof;

[0006] Self-fixing rotating mechanism: It includes an electric rotating table, a first rotating shaft, a placing seat, a first electro-hydraulic push rod, a pressing plate and a laser rangefinder. The electric rotating table is arranged on the upper side of the longitudinal moving seat. The rotating end of the electric rotating table is provided with a placing seat through the first rotating shaft. Uniformly distributed first electro-hydraulic push rods are arranged on the outer side of the placing seat. Pressing plates are arranged at the telescopic ends of the first electro-hydraulic push rods. Laser rangefinders are arranged on the sides of the pressing plates close to the center of the placing seat. This device can automatically center and clamp automotive parts through control elements and detection elements, without manual fixing, with a high degree of automation. And the device can automatically horizontally transform the milling surface of automotive parts according to usage requirements, which is convenient to operate.

[0007] Further, a PLC controller is arranged at the rear end of the right side of the milling machine seat. The input end of the PLC controller is electrically connected to an external power supply. The output ends of the PLC controller are respectively electrically connected to the input ends of the first electro-hydraulic push rod and the electric rotating table. The laser rangefinders are both bidirectionally electrically connected to the PLC controller, which is convenient for controlling electrical components.

[0008] Further, the self-fixing rotating mechanism further includes an angle sensor. The angle sensor is arranged on the upper side of the electric rotating table. The angle sensor is bidirectionally electrically connected to the PLC controller. The detection shaft of the angle sensor is fixedly connected to the first rotating shaft, and the rotation angle of the first rotating shaft in the three-head milling machine is detected and uploaded to the PLC controller.

[0009] Further, the self-fixing rotating mechanism further includes rotating balls. The rotating balls are all rotatably connected in the semi-circular grooves opened on the sides of two laterally aligned pressing plates close to the center of the placing seat, reducing the sliding wear between the automotive parts and the laterally distributed pressing plates.

[0010] Further, a stud is rotatably connected inside the chute through a bearing. A first motor is arranged at the front side of the milling machine seat. The input end of the first motor is electrically connected to the output end of the PLC controller. The output shaft of the first motor is fixedly connected to the front end of the stud, longitudinally moving the automotive parts fixed in the three-head milling machine.

[0011] Further, symmetrically distributed linear motors are arranged at the left and right ends of the upper side of the milling machine seat. A transverse moving seat is arranged between the moving ends of two longitudinally adjacent linear motors. Connecting seats are arranged on the upper sides of the transverse moving seats. Motors are arranged on the sides of the connecting seats away from the center of the milling machine seat. The input ends of the motors and the linear motors are both electrically connected to the output end of the PLC controller. The output shafts of the motors are respectively provided with a first milling cutter through a second rotating shaft, for horizontally adjusting the position of the first milling cutter of the three-head milling machine.

[0012] Further, a top seat is provided at the rear end of the milling machine base through the telescopic end of the second electro-hydraulic push rod. A third motor is provided on the upper side of the top seat. The input ends of the third motor and the second electro-hydraulic push rod are both electrically connected to the output end of the PLC controller. A second milling cutter is provided on the output shaft of the third motor through a third rotating shaft to vertically adjust the position of the second milling cutter in the three-head milling machine.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The three-head milling machine for machining automotive parts has the following advantages:

[0014] When milling automotive parts, through the PLC controller, the first electro-hydraulic push rod, the laser rangefinder, the pressing plate, the rotating ball, etc., the automotive parts can be automatically centered and clamped and fixed, without manual fixing, with high automation degree. And the device can automatically horizontally transform the milling surface of the automotive parts according to the use requirements through the PLC controller, the electric rotating table and the angle sensor, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic internal structural diagram of the present utility model;

[0017] Figure 3 is a schematic rear structural diagram of the present utility model;

[0018] Figure 4 is a schematic enlarged structural diagram at A of the present utility model.

[0019] In the figure: 1 milling machine base, 2 PLC controller, 3 longitudinal moving seat, 4 self-fixing rotating mechanism, 41 electric rotating table, 42 first rotating shaft, 43 angle sensor, 44 placing seat, 45 first electro-hydraulic push rod, 46 pressing plate, 47 laser rangefinder, 48 rotating ball, 5 stud, 6 first motor, 7 linear motor, 8 transverse moving seat, 9 connecting seat, 10 second motor, 11 first milling cutter, 12 second electro-hydraulic push rod, 13 top seat, 14 third motor, 15 second milling cutter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4, this embodiment provides a technical solution: a three-head milling machine for machining automotive parts, including a milling machine base 1 and a self-fixed rotation mechanism 4;

[0022] Milling machine base 1: A longitudinal movement base 3 is slidably connected in the chute opened on its upper side. A PLC controller 2 is provided at the rear end of the right side of the milling machine base 1. The input end of the PLC controller 2 is electrically connected to an external power supply. The output ends of the PLC controller 2 are respectively electrically connected to the input ends of the electro-hydraulic push rod 45 and the electric rotary table 41. The laser rangefinder 47 is bidirectionally electrically connected to the PLC controller 2. A stud 5 is rotatably connected to the inside of the chute through a bearing. A motor 6 is provided on the front side of the milling machine base 1. The input end of the motor 6 is electrically connected to the output end of the PLC controller 2. The output shaft of the motor 6 is fixedly connected to the front end of the stud 5. Symmetrically distributed linear motors 7 are provided at both the left and right ends of the upper side of the milling machine base 1. A transverse movement base 8 is provided between the moving ends of two longitudinally adjacent linear motors 7. A connecting seat 9 is provided on the upper side of each transverse movement base 8. A motor 10 is provided on the side of each connecting seat 9 away from the center of the milling machine base 1. The input ends of the motor 10 and the linear motor 7 are both electrically connected to the output end of the PLC controller 2. The output shafts of the motor 10 are respectively provided with a milling cutter 11 through a rotating shaft 2. A top seat 13 is provided at the rear end of the milling machine base 1 through the telescopic end of the electro-hydraulic push rod 12. A motor 14 is provided on the upper side of the top seat 13. The input ends of the motor 14 and the electro-hydraulic push rod 12 are both electrically connected to the output end of the PLC controller 2. The output shaft of the motor 14 is provided with a milling cutter 15 through a rotating shaft 3. The PLC controller 2 starts the motor 10 so that its output shaft drives the corresponding milling cutter 11 to rotate through the rotating shaft 2, thereby performing milling machining on the left and right sides of the automotive parts. The PLC controller 2 starts the motor 14 so that its output shaft drives the milling cutter 15 to rotate through the rotating shaft 3, thereby performing milling machining on the upper side of the automotive parts. The PLC controller 2 controls the linear motor 7 to horizontally adjust the position of the milling cutter 11 itself. The PLC controller 2 controls the telescopic end of the electro-hydraulic push rod 12 to vertically adjust the position of the milling cutter 15. The PLC controller 2 starts the motor 6 so that its output shaft drives the stud 5 to rotate through forward and reverse rotation. The stud 5 is threadedly connected to the longitudinal movement base 3 to longitudinally move the fixed automotive parts, thereby longitudinally adjusting the position of the milling machining of the automotive parts;

[0023] Self-fixing rotation mechanism 4: It includes an electric rotating table 41, a first rotating shaft 42, a placement seat 44, a first electro-hydraulic push rod 45, a pressing plate 46 and a laser rangefinder 47. The electric rotating table 41 is arranged on the upper side of the longitudinal moving seat 3. The rotating end of the electric rotating table 41 is provided with a placement seat 44 through the first rotating shaft 42. Uniformly distributed first electro-hydraulic push rods 45 are arranged on the outer side of the placement seat 44. Pressing plates 46 are arranged at the telescopic ends of the first electro-hydraulic push rods 45. Laser rangefinders 47 are arranged on the sides of the pressing plates 46 close to the center of the placement seat 44. The self-fixing rotation mechanism 4 further includes an angle sensor 43. The angle sensor 43 is arranged on the upper side of the electric rotating table 41. The angle sensor 43 is bidirectionally electrically connected to the PLC controller 2. The detection axis of the angle sensor 43 is fixedly connected to the first rotating shaft 42. The self-fixing rotation mechanism 4 further includes a rotating ball 48. The rotating balls 48 are all rotatably connected in the semi-circular grooves opened on the sides of the two horizontally aligned pressing plates 46 close to the center of the placement seat 44. When milling the automotive parts, first place the automotive parts inside the placement seat 44. Subsequently, the PLC controller 2 controls the two first electro-hydraulic push rods 45 in the horizontal direction so that their telescopic ends drive the corresponding pressing plates 46 to move closer to the center of the placement seat 44, thereby clamping the left and right sides of the lower edge of the automotive parts. During this process, the PLC controller 2 starts the laser rangefinder 47. The laser rangefinder 47 emits a light signal that irradiates the side of the automotive parts and is reflected back to the initial position. By the propagation time and speed of the light signal, the distance between the two left and right pressing plates 46 and the corresponding sides of the automotive parts is judged, and the measurement result is transmitted to the PLC controller 2 in the form of an electrical signal. When the distances between the horizontal pressing plates 46 and the automotive parts obtained by the PLC controller 2 all tend to zero, the PLC controller 2 closes the corresponding first electro-hydraulic push rods 45, thereby automatically fixing the lower edge of the automotive parts for horizontal milling through the two horizontally aligned pressing plates 46. Subsequently, the PLC controller 2 controls the two first electro-hydraulic push rods 45 in the vertical direction and combines with the corresponding laser rangefinders 47 through the same principle, thereby automatically fixing the lower edge of the automotive parts for vertical milling. During the longitudinal movement of the automotive parts along the bottom wall of the placement seat 44, the automotive parts come into contact with the rotating balls 48 on the horizontally distributed pressing plates 46. The rotating balls 48 adaptively rotate around the corresponding semi-circular grooves, thereby reducing the sliding wear between the automotive parts and the horizontally distributed pressing plates 46. During the milling process of the automotive parts, the PLC controller 2 controls the electric rotating table 41 so that its rotating end drives the fixed automotive parts to rotate horizontally through the first rotating shaft 42, thereby adjusting the milling surface of the automotive parts according to requirements. During this process, the PLC controller 2 starts the angle sensor 43. The angle sensor 43 adopts a high-performance integrated magnetic sensitive element. By using the non-contact characteristic of magnetic signal induction, the rotation angle of the detection axis along with the first rotating shaft 42 is measured, and the measurement result is transmitted to the PLC controller 2 in the form of an electrical signal. The PLC controller 2 controls the electric rotating table 41 through the measurement result.Thus, precise horizontal rotation adjustment is carried out on the milling surface of automotive parts. The PLC controller 2 controls the electric rotary table 41 so that its rotation is correct and the forward and reverse rotations do not exceed 360 degrees, thus avoiding the phenomenon of wire winding. This device can automatically center and clamp automotive parts through control elements and detection elements, without manual fixing, with a high degree of automation. Moreover, the device can automatically perform horizontal transformation on the milling surface of automotive parts according to usage requirements, and the operation is convenient.

[0024] The working principle of a three-head milling machine for machining automotive parts provided by the utility model is as follows: When machining automotive parts on the milling machine, first place the automotive parts inside the placement seat 44. Subsequently, the PLC controller 2 controls the two electro-hydraulic push rods 45 in the horizontal direction, and their telescopic ends drive the corresponding pressure plates 46 to move towards the center of the placement seat 44, thereby clamping the left and right sides of the lower edge of the automotive parts. During this process, the PLC controller 2 activates the laser rangefinder 47. The laser rangefinder 47 emits a light signal that irradiates the side of the automotive parts and is reflected back to the initial position. By the propagation time and speed of the light signal, the distance between the left and right pressure plates 46 and the corresponding sides of the automotive parts is judged, and the measurement result is transmitted to the PLC controller 2 in the form of an electrical signal. When the distances between the horizontal pressure plates 46 and the automotive parts obtained by the PLC controller 2 all tend to zero, the PLC controller 2 turns off the corresponding electro-hydraulic push rods 45, thereby automatically fixing the lower edge of the automotive parts for horizontal milling machining through the two horizontally aligned pressure plates 46. Subsequently, the PLC controller 2 controls the two electro-hydraulic push rods 45 in the vertical direction and combines them with the corresponding laser rangefinders 47 according to the same principle, thereby automatically fixing the lower edge of the automotive parts for vertical milling machining. During the longitudinal movement of the automotive parts along the bottom wall of the placement seat 44, the automotive parts come into contact with the rotating balls 48 on the horizontally distributed pressure plates 46, and the rotating balls 48 adaptively rotate around the corresponding semi-circular grooves, thereby reducing the sliding wear between the automotive parts and the horizontally distributed pressure plates 46. Subsequently, the PLC controller 2 activates the motor 10, and its output shaft drives the corresponding milling cutter 11 to rotate through the rotating shaft 2, thereby machining the left and right sides of the automotive parts on the milling machine. The PLC controller 2 activates the motor 14, and its output shaft drives the milling cutter 15 to rotate through the rotating shaft 3, thereby machining the upper side of the automotive parts on the milling machine. The PLC controller 2 controls the linear motor 7 to horizontally adjust the position of the milling cutter 11 itself. The PLC controller 2 controls the telescopic end of the electro-hydraulic push rod 12 to vertically adjust the position of the milling cutter 15. The PLC controller 2 activates the motor 6, and its output shaft drives the screw rod 5 to rotate through forward and reverse rotation. The screw rod 5 is threadedly connected with the longitudinal movement seat 3, thereby longitudinally moving the fixed automotive parts, thereby longitudinally adjusting the position of the milling machining of the automotive parts. During the milling machining of the automotive parts, the PLC controller 2 controls the electric rotating table 41, and its rotating end drives the fixed automotive parts to rotate horizontally through the rotating shaft 1, thereby changing and adjusting the milling machining surface of the automotive parts according to requirements. During this process, the PLC controller 2 activates the angle sensor 43. The angle sensor 43 adopts a high-performance integrated magnetic sensitive element, and uses the non-contact characteristic of magnetic signal induction to measure the rotation angle of the detection shaft along with the rotating shaft 1, and transmits the measurement result to the PLC controller 2 in the form of an electrical signal. The PLC controller 2 controls the electric rotating table 41 through the measurement result.Thus, precise horizontal rotation adjustment is performed on the milling surface of automotive parts. The PLC controller 2 controls the electric rotary table 41 so that its rotation is correct and the forward and reverse rotations do not exceed 360 degrees, thus avoiding the phenomenon of wire winding.

[0025] It should be noted that, in the above embodiments, the PLC controller 2 disclosed can adopt 6ES7274-1XK30-0XA0, the electric rotary table 41 can adopt the 01RSB01H hollow electric rotary table, the angle sensor 43 can adopt the HSM22M multi-turn non-contact magnetic potentiometer, the electro-hydraulic push rod 45 can adopt the DYZW integral straight type micro electro-hydraulic push rod, the laser rangefinder 47 can adopt the WH-LRF laser rangefinder, the linear motor 7 can adopt the GD magnetic axis micro linear motor, the electro-hydraulic push rod 12 can adopt the DYTZ-1000, both the motor 6 and the motor 10 can adopt the Y80M1-2, the motor 14 can adopt the Y90S-2, and the PLC controller 2 controls the electric rotary table 41, the angle sensor 43, the electro-hydraulic push rod 45, the laser rangefinder 47, the motor 6, the linear motor 7, the motor 10, the electro-hydraulic push rod 12 and the motor 14 to work by using the commonly used methods in the prior art.

[0026] The above are only the embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A three-head milling machine for processing automobile parts, characterized in that: It comprises a milling machine base (1) and a self-fixing rotating mechanism (4); Milling machine seat (1): a longitudinal shift seat (3) is slidably connected in a slide groove provided on the upper side thereof; A self-fixing rotating mechanism (4): comprising an electric rotating platform (41), a rotating shaft (42), a storage seat (44), an electro-hydraulic push rod (45), a pressure plate (46) and a laser rangefinder (47); the electric rotating platform (41) is arranged on the upper side of the longitudinal displacement seat (3); a storage seat (44) is arranged at the rotating end of the electric rotating platform (41) via a rotating shaft (42); electro-hydraulic push rods (45) are evenly distributed on the outer side of the storage seat (44); a pressure plate (46) is arranged at the telescopic end of the electro-hydraulic push rod (45); and a laser rangefinder (47) is arranged on one side of the pressure plate (46) close to the center of the storage seat (44); A PLC controller (2) is provided at the right rear end of the milling machine seat (1); an input end of the PLC controller (2) is electrically connected to an external power supply; an output end of the PLC controller (2) is electrically connected to an electro-hydraulic push rod (45) and an input end of an electric rotary table (41), respectively; and a laser rangefinder (47) is bidirectionally electrically connected to the PLC controller (2); The left and right ends of the upper side of the milling machine seat (1) are both provided with symmetrically distributed linear motors (7); a transverse seat (8) is provided between the mover ends of two longitudinally adjacent linear motors (7); a connecting seat (9) is provided on the upper side of the transverse seat (8); a second motor (10) is provided on the side of the connecting seat (9) away from the center of the milling machine seat (1); the input ends of the second motor (10) and the linear motor (7) are both electrically connected to the output end of the PLC controller (2); and the output shaft of the second motor (10) is provided with a milling cutter (11) via a second rotating shaft; The rear end of the milling machine seat (1) is provided with a top seat (13) through the telescopic end of the second electro-hydraulic push rod (12), and the upper side of the top seat (13) is provided with a third motor (14), the input ends of the third motor (14) and the second electro-hydraulic push rod (12) are both electrically connected to the output end of the PLC controller (2), and the output shaft of the third motor (14) is provided with a second milling cutter (15) through a third rotating shaft.

2. A three-head milling machine for machining automobile parts according to claim 1, characterized in that: The self-fixing rotating mechanism (4) further comprises an angle sensor (43), wherein the angle sensor (43) is arranged on the upper side of the electric rotating platform (41), the angle sensor (43) is bidirectionally electrically connected to the PLC controller (2), and the detection axis of the angle sensor (43) is fixedly connected to the rotating shaft 1 (42).

3. The three-head milling machine for machining automobile parts according to claim 1, characterized in that: The self-fixing rotating mechanism (4) further comprises a rotating ball (48), wherein the rotating ball (48) is rotatably connected to a semicircular groove opened on one side of two laterally aligned pressing plates (46) close to the center of the storage seat (44).

4. The three-head milling machine for machining automobile parts according to claim 1, characterized in that: A stud (5) is rotatably connected to the interior of the slide groove via a bearing. A motor (6) is provided on the front side of the milling machine seat (1). The input end of the motor (6) is electrically connected to the output end of the PLC controller (2). The output shaft of the motor (6) is fixedly connected to the front end of the stud (5).

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