Numerical control planer type milling machine convenient for clamping workpieces

Abstract

The utility model provides the numerical control planer type milling machine which is convenient for clamping a workpiece. A numerical control planer type milling machine facilitating workpiece clamping comprises a portal frame, a driving mechanism, a machine case, a workbench and the like. The front upper part of the portal frame is fixedly connected with a driving mechanism; a case is arranged below the portal frame; a workbench used for containing workpieces is installed on the inner side of the machine box. The contact mode between the clamping plate and the workpiece is changed through the existence of the convex points, smooth contact is changed into multi-point contact, the friction coefficient can be increased through the contact mode, larger friction force can be generated when the clamping plate clamps the workpiece, and therefore the stability of the workpiece on the clamping plate is improved, and in the machining process of the workpiece, the machining precision of the workpiece is improved. And the workpiece is not easy to slide due to vibration or external force, so that the precision and the stability of workpiece processing are ensured.

Description

Technical Field

[0001] This utility model relates to the field of milling machine technology, and in particular to a CNC gantry milling machine that facilitates workpiece clamping. Background Technology

[0002] A milling machine is a machine tool specifically designed for metal processing. During the milling process, a fixing mechanism is needed to stably clamp the workpiece to prevent displacement during grinding, cutting, and other machining operations. However, milling machines currently on the market still have the following problems:

[0003] Existing clamping devices have limited functionality and poor clamping performance. Furthermore, they require replacement for workpieces of different shapes, resulting in poor applicability and consequently affecting workpiece processing efficiency.

[0004] Meanwhile, in existing technologies, the workpiece is usually fixed manually by workers using pressure plates and bolts, which increases the workload of the workers. Utility Model Content

[0005] To overcome the shortcomings of existing clamping devices, such as limited functionality, poor clamping effect, and the need to replace the clamping device for different shaped workpieces, which makes the existing clamping devices unsuitable and affects the processing efficiency of the workpieces, this utility model provides a CNC gantry milling machine that facilitates workpiece clamping.

[0006] The technical solution of this utility model is as follows: A CNC gantry milling machine for easy workpiece clamping includes a gantry frame, a drive mechanism, a machine housing, and a worktable; the drive mechanism is fixedly connected to the upper front side of the gantry frame; the machine housing is located below the gantry frame; a worktable for placing workpieces is installed inside the machine housing; it also includes a sensor, a moving mechanism, a first hydraulic cylinder, a connecting seat, a clamping plate, and a second hydraulic cylinder; a sensor is installed on the front and rear sides of the worktable; a moving mechanism is connected to the left and right sides inside the machine housing; several first hydraulic cylinders are connected to each moving mechanism; a connecting seat is fixedly connected to the telescopic part of each first hydraulic cylinder; several clamping plates are rotatably connected to each connecting seat; several second hydraulic cylinders are fixedly connected to each connecting seat, and the second hydraulic cylinders are located inside the clamping plates, and the clamping plates are movably connected to the telescopic part of the second hydraulic cylinders.

[0007] More preferably, the clamps are configured in a J-shape.

[0008] More preferably, it also includes protrusions; multiple protrusions are provided on one side of the clamp.

[0009] More preferably, the surface of the bump is set to rough.

[0010] More preferably, the moving mechanism includes an electric slide rail, an electric slider, and a fixed base; an electric slide rail is fixedly connected to the left and right sides of the housing; an electric slider is slidably connected to each electric slide rail; and a fixed base is fixedly connected to the upper side of each electric slider, and the fixed base is fixedly connected to the first hydraulic cylinder.

[0011] The beneficial effects of this utility model are as follows: the presence of protrusions changes the contact method between the clamping plate and the workpiece from smooth contact to multi-point contact. This contact method can increase the coefficient of friction, so that the clamping plate can generate greater friction when clamping the workpiece, thereby improving the stability of the workpiece on the clamping plate. As a result, the workpiece is less likely to slip due to vibration or external force during the processing, thus ensuring the accuracy and stability of the workpiece processing.

[0012] When clamping longer workpieces, in order to ensure that the clamping plates can better clamp and fix the workpieces, the second hydraulic cylinder can be controlled to push the two clamping plates to rotate in opposite directions on the connecting seat, so that the two clamping plates on the connecting seat open in a V-shape, thereby increasing the clamping area of ​​the clamping plates on the workpieces, so that longer workpieces can be stably clamped by the clamping plates.

[0013] This also avoids the situation where, when clamping longer workpieces, if the clamping plates are not adjusted, the plates can only clamp the middle area on both sides of the workpiece, while the front and rear ends of the workpiece lack clamping force. Consequently, when machining the front and rear ends of the workpiece, the workpiece is prone to slight shaking due to cutting force, which in turn affects the machining of the workpiece.

[0014] The above-described automatic workpiece clamping and fixing method solves the problem that in the prior art, the workpiece is usually fixed manually by workers using pressure plates and bolts, which increases the workload of workers.

[0015] When the aforementioned clamping plate holds a circular workpiece, the clamping plate is set in a J-shape. With the rotation adjustment of the clamping plate, the clamping plate clamps the circular workpiece in an enveloping clamping manner, thereby enhancing the stability of the circular workpiece and avoiding the workpiece from generating a back-and-forth movement force during subsequent processing, which would affect the processing accuracy.

[0016] Meanwhile, by adjusting the rotation of the clamping plate using the second hydraulic cylinder, the clamping plate can be stably clamped and fixed to workpieces of different shapes, thereby greatly improving the adaptability of the clamping plate. It also solves the problems of existing clamping devices having limited functions and poor clamping effect, and requiring replacement of the clamping device for workpieces of different shapes, resulting in poor applicability of existing clamping devices and affecting the processing efficiency of workpieces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the CNC gantry milling machine that facilitates workpiece clamping according to the present invention;

[0018] Figure 2 This is a partial sectional view of the CNC gantry milling machine disclosed in this utility model, which facilitates workpiece clamping;

[0019] Figure 3 This is an enlarged view of point A of the CNC gantry milling machine disclosed in this utility model, which facilitates workpiece clamping;

[0020] Figure 4 This is a schematic diagram of the processing structure of the CNC gantry milling machine that facilitates workpiece clamping according to this utility model.

[0021] The markings in the diagram are as follows: 1-Gantry frame, 2-Drive mechanism, 3-Chassis, 4-Workbench, 5-Induction detector, 6-First hydraulic cylinder, 7-Connecting seat, 8-Clamping plate, 9-Second hydraulic cylinder, 10-Protrusion, 21-Electric slide rail, 22-Electric slider, 23-Fixed seat. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Example 1

[0024] A CNC gantry milling machine that facilitates workpiece clamping, such as Figure 1-4 As shown, it includes a gantry frame 1, a drive mechanism 2, a housing 3, and a worktable 4; the drive mechanism 2 is bolted to the upper front side of the gantry frame 1; the housing 3 is located below the gantry frame 1; the worktable 4 is located inside the housing 3.

[0025] It also includes a sensor 5, a moving mechanism, a first hydraulic cylinder 6, a connecting seat 7, a clamping plate 8, and a second hydraulic cylinder 9; a sensor 5 is installed at the center of the front side and the center of the rear side of the workbench 4; a moving mechanism is connected to the left side and the right side of the machine housing 3; each moving mechanism is connected to two first hydraulic cylinders 6 that are symmetrically distributed front and back; each first hydraulic cylinder 6 has a connecting seat 7 fixedly connected to its telescopic part; each connecting seat 7 has two clamping plates 8 that are symmetrically distributed front and back connected to it; each connecting seat 7 has two second hydraulic cylinders 9 that are symmetrically distributed front and back connected to it by bolts, and the second hydraulic cylinders 9 are located inside the clamping plate 8, and the clamping plate 8 is hinged to the telescopic part of the second hydraulic cylinder 9.

[0026] The clamping plate 8 is designed in a J-shape, which allows it to clamp not only square workpieces but also round workpieces, thus improving the applicability of the clamping plate 8.

[0027] It also includes protrusions 10; at least twenty protrusions 10 arranged in a matrix are provided on one side of the clamping plate 8.

[0028] The surface of the protrusion 10 is roughened to further enhance the friction between the protrusion 10 and the workpiece.

[0029] The moving mechanism includes an electric slide rail 21, an electric slider 22, and a fixed seat 23; an electric slide rail 21 is bolted to the left and right sides of the housing 3; an electric slider 22 is slidably connected to each electric slide rail 21; a fixed seat 23 is fixedly connected to the upper side of each electric slider 22, and the fixed seat 23 is bolted to the first hydraulic cylinder 6.

[0030] When using this CNC gantry milling machine that facilitates workpiece clamping, the operator first places the workpiece to be processed onto the worktable 4 using the external lifting equipment, such as... Figure 1 As shown, the workpiece on the worktable 4 is then detected by the sensor detector 5. When the workpiece is square, the first hydraulic cylinder 6 is controlled to move the connecting seat 7 toward the workpiece. The corresponding clamping plate 8, the second hydraulic cylinder 9, and the protrusion 10 will move synchronously with the connecting seat 7. The protrusion 10 will then contact the workpiece. The presence of the protrusion 10 changes the contact method between the clamping plate 8 and the workpiece from smooth contact to multi-point contact. This contact method can increase the friction coefficient, so that the clamping plate 8 can generate greater friction when clamping the workpiece. This improves the stability of the workpiece on the clamping plate 8, making it less likely for the workpiece to slip due to vibration or external force during processing. This ensures the accuracy and stability of the workpiece processing. Thus, under the action of the clamping plate 8 and the protrusion 10, the clamping of the workpiece is completed.

[0031] It should be noted that during the processing of the upper surface of the workpiece, the worktable 4 will move forward and backward accordingly. At this time, the electric slide rail 21 will also drive the electric slider 22 to move forward and backward accordingly. The fixed seat 23 and the parts connected to it will move synchronously with the electric slider 22 to avoid the limitation between the clamping plate 8 and the workpiece.

[0032] To explain, when clamping longer workpieces, in order to ensure that the clamping plates 8 can better clamp and fix the workpiece, the second hydraulic cylinder 9 can be controlled to push the two clamping plates 8 to rotate in opposite directions on the connecting seat 7, so that the two clamping plates 8 on the connecting seat 7 open in a V-shape, thereby increasing the clamping area of ​​the clamping plates 8 on the workpiece. This allows the longer workpieces to be stably clamped by the clamping plates 8. At the same time, it avoids the situation where, when clamping longer workpieces, if the clamping plates 8 are not adjusted, the clamping plates 8 can only clamp the middle area on both sides of the workpiece, while the front and rear parts on both sides of the workpiece lack clamping force. As a result, when processing the front and rear parts of the workpiece, the workpiece is prone to slight shaking due to cutting force, which affects the processing of the workpiece. Thus, by using the above-mentioned automatic workpiece clamping and fixing method, the problem of fixing the workpiece in the prior art, which usually requires the operator to manually fix the workpiece with pressure plates and bolts, is solved, thereby increasing the workload of the operator.

[0033] Next, when the workpiece is circular, the electric slide rail 21 is controlled to move the electric slider 22 backward. The fixed seat 23 and its connected parts will move backward synchronously with the electric slider 22, so that the first hydraulic cylinder 6 is positioned directly opposite the circular workpiece. Then, the second hydraulic cylinder 9 is controlled to push the two clamping plates 8 to rotate in opposite directions on the connecting seat 7, so that the two clamping plates 8 on the connecting seat 7 open in a V-shape. Then, the first hydraulic cylinder 6 is controlled to move the connecting seat 7 toward the workpiece. The corresponding clamping plates 8, the second hydraulic cylinder 9, and the protrusion 10 will move synchronously with the connecting seat 7, and then the protrusion 10 will contact the circular workpiece. In this way, under the action of the clamping plates 8 and the protrusion 10, the clamping of the circular workpiece is completed. Figure 4 As shown, it should be noted that when the clamping plate 8 clamps the circular workpiece, since the clamping plate 8 is set in a J-shape, and with the rotation adjustment of the clamping plate 8, the clamping plate 8 clamps the circular workpiece in an enveloping clamping manner, thereby enhancing the stability of the circular workpiece and avoiding the workpiece from generating a back-and-forth movement force during subsequent processing, which would affect the processing accuracy. At the same time, through the rotation adjustment of the clamping plate 8 by the second hydraulic cylinder 9, the clamping plate 8 can stably clamp and fix workpieces of different shapes, thereby greatly improving the adaptability of the clamping plate 8. It also solves the problem that the existing clamping devices have a single function and poor clamping effect, and require replacement of the clamping device for different shapes of workpieces, resulting in poor applicability of the existing clamping devices and affecting the processing efficiency of the workpiece.

[0034] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A CNC gantry milling machine for easy workpiece clamping, comprising a gantry (1), a drive mechanism (2), a housing (3), and a worktable (4); the drive mechanism (2) is fixedly connected to the upper front side of the gantry (1); the housing (3) is disposed below the gantry (1); a worktable (4) for placing workpieces is installed inside the housing (3); characterized in that: It also includes a sensor (5), a moving mechanism, a first hydraulic cylinder (6), a connecting seat (7), a clamping plate (8), and a second hydraulic cylinder (9); a sensor (5) is installed on the front and rear sides of the workbench (4); a moving mechanism is connected to the left and right sides of the machine box (3); several first hydraulic cylinders (6) are connected to each moving mechanism; a connecting seat (7) is fixedly connected to the telescopic part of each first hydraulic cylinder (6); several clamping plates (8) are rotatably connected to each connecting seat (7); several second hydraulic cylinders (9) are fixedly connected to each connecting seat (7), and the second hydraulic cylinders (9) are located inside the clamping plate (8), and the clamping plate (8) is movably connected to the telescopic part of the second hydraulic cylinder (9).

2. The CNC gantry milling machine for easy workpiece clamping according to claim 1, characterized in that: The clamp (8) is set to J-shape.

3. A CNC gantry milling machine for easy workpiece clamping according to claim 2, characterized in that: It also includes protrusions (10); multiple protrusions (10) are provided on one side of the clamp (8).

4. A CNC gantry milling machine for easy workpiece clamping according to claim 3, characterized in that: The surface of the protrusion (10) is set to rough.

5. A CNC gantry milling machine for easy workpiece clamping according to any one of claims 3-4, characterized in that: The moving mechanism includes an electric slide rail (21), an electric slider (22), and a fixed seat (23); an electric slide rail (21) is fixedly connected to the left and right sides of the housing (3); an electric slider (22) is slidably connected to each electric slide rail (21); a fixed seat (23) is fixedly connected to the upper side of each electric slider (22), and the fixed seat (23) is fixedly connected to the first hydraulic cylinder (6).

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