Opposite-row double-end bridge type gantry milling machine

Abstract

The utility model provides an opposite-row double-end bridge type gantry milling machine which comprises a milling machine 1, the milling machine 1 is composed of machine bodies 11 and a workbench 13, the machine bodies 11 are provided with machine heads 12 used for machining, the number of the machine bodies 11 is two, the machine bodies 11 are fixedly arranged on the two sides of the workbench 13, the machine heads 12 are provided with proximity sensors, and the proximity sensors are electrically connected with an alarm assembly, so that when the two machine heads 12 machine, the alarm assembly is electrically connected with the machine heads 12. And a tool setting mechanism 2 is arranged on one side of the workbench 13, and the tool setting mechanism 2 is arranged between the two machine heads 12, so that when the two machine heads 12 are used for machining, the two machine heads 12 are arranged at the same tool setting reference zero point and are kept flush with each other. According to the opposite-row double-head bridge type gantry milling machine, parts are machined at the same time through the opposite-row double machine heads, double-head machining of large metal parts of molds is achieved, the machining efficiency of complex molded surfaces of workpieces is greatly improved, and the project development cycle of large automobile molds is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machines, in particular to a double-head bridge-type gantry milling machine in a row. Background Art

[0002] A portal milling machine, also known as a gantry milling machine, is a milling machine with a portal frame and a horizontal long bed. CNC gantry milling machines can also process spatial surfaces and some special parts. However, existing gantry milling machines include but are not limited to the gantry milling machines disclosed in Chinese patents No. 202320926491.7 and 202220148766.4. All of them use a single head to operate the milling cutter to process parts. When processing large metal parts, there is still room for significant improvement in processing efficiency. Therefore, a double-head bridge gantry milling machine is proposed to solve the above problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a double-head bridge-type gantry milling machine in a row, which has the advantage of high processing efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-head bridge gantry milling machine in a row, comprising a milling machine, the milling machine is composed of a machine body and a workbench, a machine head for processing is arranged on the machine body, the machine body is two and fixedly arranged on both sides of the workbench, a proximity sensor is arranged on the machine head, and the proximity sensor is electrically connected to an alarm component, so that when the distance between the two machine heads reaches a preset value during processing, the alarm component warns;

[0005] A tool setting mechanism is arranged on one side of the workbench and is placed between the two machine heads so that the two machine heads are placed at the same tool setting reference zero point to maintain alignment during processing.

[0006] Furthermore, the tool setting mechanism includes a motion module, and the motion module is transmission-connected with a tool setting instrument, and the tool setting instrument is a laser tool setting instrument, so that the two machine heads are placed on the laser and kept flush.

[0007] Furthermore, a machine head is provided on the machine body for three-axial transmission via a transmission mechanism.

[0008] Furthermore, the proximity sensor is a photoelectric sensor and is arranged between the two heads, and the photoelectric sensor is electrically connected to the transmission mechanism.

[0009] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0010] 1. This double-head bridge gantry milling machine can process parts with two heads at the same time, thus realizing double-head processing of large metal parts of molds, greatly improving the processing efficiency of complex surfaces of workpieces and reducing the development cycle of large automobile mold projects.

[0011] 2. This pair of double-head bridge gantry milling machines uses the same tool setting instrument during processing, so that the two sets of motion mechanisms use the same tool setting reference zero point for the machine heads, avoiding height differences on both sides of the parts during double-head processing and improving the consistent processing accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the appearance of the utility model;

[0013] Figure 2 This is the reference diagram of the tool setting instrument being pushed in;

[0014] Figure 3 This is a schematic diagram of the tool setting instrument in the pushed-in state (back view);

[0015] Figure 4 This is a schematic diagram of the structure of the tool setting mechanism of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the utility model (top view);

[0017] Figure 6 This is a reference diagram of the coordination between the machine head and the tool setting instrument.

[0018] In the figure: 1. milling machine; 11. machine body; 12. machine head; 13. workbench; 2. tool setting mechanism; 21. motion module; 22. tool setting instrument. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-3 The double-head bridge gantry milling machine in the present application comprises a milling machine 1, which is composed of a machine body 11 and a workbench 13. A machine head 12 for processing is arranged on the machine body 11. The machine body 11 is two and fixedly arranged on both sides of the workbench 13. A proximity sensor is arranged on the machine head 12. The proximity sensor is electrically connected to an alarm component, so that when the distance between the two machine heads 12 reaches a preset value during processing, the alarm component warns;

[0021] A tool setting mechanism 2 is provided on one side of the workbench 13 , and the tool setting mechanism 2 is placed between the two machine heads 12 , so that the two machine heads 12 are placed at the same tool setting reference zero point to maintain alignment during processing.

[0022] The device arranges two machine heads 12 on opposite sides so that the two machine heads 12 can process parts at the same time, thereby realizing more efficient processing of large metal parts. However, compared with the design of a single machine head 12, although the two machine heads 12 improve efficiency, there is a problem that they may interfere with each other and cause collision during processing;

[0023] Other existing processing equipment usually adopts manual intervention to adjust the processing equipment when interference occurs. The device detects the distance between the two heads 12 in real time by setting a proximity sensor. When the distance reaches a preset value, the proximity sensor sends an electrical signal to the alarm component, and the alarm component alarms to notify the technician to adjust the equipment to keep the equipment running efficiently and accurately.

[0024] A proximity sensor is a sensor that can detect whether two objects are close to each other. It is a prior art, such as a displacement sensor in a mechanical sensor or an inductive proximity sensor, a capacitive proximity sensor, an ultrasonic proximity sensor, a photoelectric sensor, a Hall effect sensor, etc.

[0025] If two machine heads 12 are used to process parts at the same time, in addition to the possible interference and collision problems that may occur occasionally, there may also be a height difference at the intersection of the two machine heads on the processed parts due to the different heights of the left and right tool heads, and resonance problems may occur when the two machine heads 12 process parts at the same time, which increases the speed but sacrifices the accuracy;

[0026] The device solves the resonance problem by fixing the machine bodies 11 on the left and right sides of the same workbench 13 to form the same milling machine 1, and performing double-head processing on the same part on the same milling machine 1;

[0027] The device movably sets a tool setting instrument 22 on one side of the workbench 13, and controls the tool setting instrument 22 to be retracted when loading, so as not to affect the loading, and the workpiece will not hit the tool setting instrument 22 when rotating inside. After the loading is completed, the tool setting instrument 22 is pushed in until the workpiece processing is completed. The device uses the same tool setting instrument 22 to limit the Z-axis height of the two tool heads at the same time, which not only accurately determines the depth of the cutting, but also keeps the height of the two tool heads flush, ensuring the consistency of the double-head tool setting.

[0028] Furthermore, the tool setting mechanism 2 includes a motion module 21, and a tool setting instrument 22 is transmission-connected to the motion module 21. The tool setting instrument 22 is a laser tool setting instrument, so that the two machine heads 12 are placed on the laser and kept flush.

[0029] The device is provided with a laser tool setting device 22, which not only limits the z-axis height of the tool under the machine head 12 and keeps it consistent, but also can detect the tool tip, tool size, tool runout, and tool damage.

[0030] The machine body 11 is provided with a machine head 12 through a three-axis transmission mechanism. Preferably, the proximity sensor is a photoelectric sensor and is arranged between the two machine heads 12. The photoelectric sensor is electrically connected to the transmission mechanism.

[0031] The device drives the head 12 to move in the x, y, and z directions by setting a transmission mechanism to achieve processing of the workpiece in three directions. The transmission mechanism is a conventional design of the prior art, including but not limited to the contents disclosed in the Chinese patent publication number CN205702586U, and is not an innovative invention of the present application, and will not be described in detail here.

[0032] In order to further improve the processing efficiency of the equipment and simplify the processing steps when the two heads 12 interfere with each other, the device sets a photoelectric sensor between the two heads 12 and electrically connects the photoelectric sensor to the transmission mechanism that controls the movement of the heads 12. When the distance between the two heads 12 reaches a preset value, the photoelectric sensor sends an electrical signal to the host computer, and the host computer controls the transmission mechanism to limit the two heads 12 and prevent collision. This design does not require human intervention, is more convenient during processing, prevents interference in advance, and has higher processing efficiency.

[0033] 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 double-head bridge-type gantry milling machine, comprising a milling machine (1), the milling machine (1) being composed of a machine body (11) and a workbench (13), a machine head (12) for processing being arranged on the machine body (11), characterized in that: The machine bodies (11) are two and fixedly mounted on both sides of the workbench (13); a proximity sensor is disposed on the machine head (12); the proximity sensor is electrically connected to an alarm component, so that when the distance between the two machine heads (12) reaches a preset value during processing, the alarm component issues an early warning; A tool setting mechanism (2) is provided on one side of the workbench (13), and the tool setting mechanism (2) is placed between the two machine heads (12), so that the two machine heads (12) are placed at the same tool setting reference zero point to maintain alignment during processing.

2. The double-head bridge gantry milling machine according to claim 1, characterized in that: The tool setting mechanism (2) comprises a motion module (21), and a tool setting instrument (22) is transmission-connected to the motion module (21). The tool setting instrument (22) is a laser tool setting instrument, so that the two machine heads (12) are placed on the laser and remain flush.

3. The double-head bridge gantry milling machine according to any one of claims 1 to 2, characterized in that: The machine body (11) is provided with a machine head (12) via a transmission mechanism for three-axial transmission.

4. The double-head bridge gantry milling machine according to claim 3, characterized in that: The proximity sensor is a photoelectric sensor and is arranged between the two machine heads (12); the photoelectric sensor is electrically connected to the transmission mechanism.

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