Numerical control planer type milling machine for numerical control machining center

Abstract

The utility model discloses a numerical control planer type milling machine for a numerical control machining center, which comprises a workbench, a portal frame with an inverted U-shaped section is fixedly arranged in the middle of the upper part of the workbench, and a milling machining mechanism is arranged on the portal frame; a bearing sliding base is arranged on the upper portion of the workbench in a sliding mode, and a translation driving mechanism used for driving the bearing sliding base to do linear motion is arranged between the workbench and the bearing sliding base. Two connecting lug plates are symmetrically and fixedly arranged at one end of the upper portion of the bearing sliding base, the upper portions of the two connecting lug plates are jointly hinged to one end of a workpiece containing table, and an adjusting oil cylinder is hinged between the bottom of the other end of the workpiece containing table and the upper portion of the bearing sliding base. A clamping mechanism used for fixing a workpiece is arranged on the upper portion of the workpiece containing table. The clamping device has good applicability, can clamp and fix different workpieces with working surfaces with different gradients, effectively reduces the cost of a production line, and improves the machining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining equipment technology, and in particular to a CNC gantry milling machine for CNC machining centers. Background Technology

[0002] With the rapid development of modern manufacturing, CNC machining technology is increasingly widely used in precision parts, molds, aerospace components, and other fields. CNC gantry milling machines, as efficient and high-precision machining equipment, have become important equipment for parts machining due to their high rigidity, large machining range, and good stability. Currently, some parts require milling of inclined surfaces. For such parts, special fixtures are generally designed for machining. However, the design of special fixtures increases production costs, and the universality of special fixtures for single parts is relatively low. Utility Model Content

[0003] The purpose of this utility model is to provide a CNC gantry milling machine for CNC machining centers, which solves the technical problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a CNC gantry milling machine for a CNC machining center, including a worktable. A gantry frame with an inverted U-shaped cross-section is fixedly installed in the middle of the upper part of the worktable, and a milling mechanism is installed on the gantry frame. A bearing slide is slidably installed on the upper part of the worktable, and a translation drive mechanism for driving the linear motion of the bearing slide is provided between the worktable and the bearing slide. Two connecting lugs are symmetrically fixed at one end of the upper part of the bearing slide, and the upper parts of the two connecting lugs are hinged to one end of the workpiece placement table. An adjusting cylinder is hinged between the bottom of the other end of the workpiece placement table and the upper part of the bearing slide. A clamping mechanism for fixing the workpiece is provided on the upper part of the workpiece placement table.

[0006] Furthermore, the milling mechanism includes two symmetrically fixed mounting plates on the upper part of the gantry frame, with a first screw rotatably mounted between the two mounting plates. A first motor for driving the first screw to rotate is fixedly mounted on the outer side of one of the mounting plates. A moving stage is slidably mounted between the gantry frame and the first screw. A threaded through hole adapted to the first screw is opened in the middle of the moving stage. A drive box is provided below the moving stage. A second motor is provided inside the drive box. A milling cutter is mounted on the drive shaft of the second motor.

[0007] Furthermore, two first slide rails are fixedly and symmetrically along the first screw on the upper part of the gantry frame, and two first sliders that are respectively adapted to the two first slide rails are fixedly and symmetrically arranged on the side of the moving platform near the gantry frame.

[0008] Furthermore, a servo electric cylinder is fixedly installed at the bottom of the mobile platform, and the telescopic end of the servo electric cylinder is fixedly connected to the upper part of the drive box.

[0009] Furthermore, the translation drive mechanism includes a second screw rotatably disposed in the middle of the worktable, a third motor for driving the second screw to rotate is fixedly disposed on the worktable, and a threaded sleeve that is threadedly connected to the second screw is fixedly disposed in the middle of the bottom of the bearing slide.

[0010] Furthermore, two second slide rails are symmetrically fixed on both sides of the upper part of the worktable, and two second sliders are respectively adapted to the two second slide rails at the bottom of the bearing slide.

[0011] Furthermore, the clamping mechanism includes a fixed clamping plate fixedly disposed at one upper end of the workpiece placement platform. The workpiece placement platform has an installation groove inside. A first clamping cylinder is fixedly disposed in the installation groove in a direction perpendicular to the fixed clamping plate. The telescopic end of the first clamping cylinder is fixedly connected to a sliding plate slidably disposed in the installation groove. A movable clamping plate parallel to the fixed clamping plate is fixedly disposed on the upper part of the sliding plate.

[0012] Furthermore, the clamping mechanism also includes mounting brackets symmetrically fixedly disposed on both sides of the workpiece placement platform, each mounting bracket being provided with a horizontal second clamping cylinder, and the telescopic ends of the two second clamping cylinders being respectively fixedly provided with side clamping plates.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] In operation, this invention places the workpiece to be milled on a workpiece placement table and clamps it using a clamping mechanism on the table. If the upper surface of the workpiece to be milled is an inclined surface, the workpiece placement table can be deflected by adjusting the extension movement of the hydraulic cylinder, thereby adjusting the workpiece's machining surface to a horizontal state, which facilitates subsequent milling. Therefore, this invention has good applicability and can clamp and fix different workpieces with different inclined surfaces, effectively reducing production line costs and improving processing efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0019] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Gantry frame; 3. Mounting plate; 4. First screw; 5. First motor; 6. Moving table; 7. First slide rail; 8. First slider; 9. Drive box; 10. Servo cylinder; 11. Second motor; 12. Milling cutter; 13. Bearing slide; 14. Second screw; 15. Third motor; 16. Screw sleeve; 17. Second slide rail; 18. Second slider; 19. Connecting ear plate; 20. Workpiece placement table; 21. Fixed clamping plate; 22. Mounting slot; 23. First clamping cylinder; 24. Slide plate; 25. Movable clamping plate; 26. Mounting frame; 27. Second clamping cylinder; 28. Side clamping plate; 29. ​​Adjusting cylinder. Detailed Implementation

[0020] like Figures 1-3 As shown, a CNC gantry milling machine for a CNC machining center includes a worktable 1, and a gantry frame 2 with an inverted U-shaped cross-section is fixedly installed on the upper middle part of the worktable 1. A milling mechanism is provided on the gantry frame 2.

[0021] The milling mechanism includes two symmetrically mounted mounting plates 3 fixedly disposed on the upper part of the gantry frame 2. A first screw 4 is rotatably mounted between the two mounting plates 3. A first motor 5 for driving the first screw 4 to rotate is fixedly mounted on the outer side of one of the mounting plates 3. A moving stage 6 is slidably mounted between the gantry frame 2 and the first screw 4. The moving stage 6 has a threaded through hole in the middle that matches the first screw 4. In addition, two first slide rails 7 are symmetrically fixedly mounted on the upper part of the gantry frame 2 along the first screw 4. Two first sliders 8, each matching the two first slide rails 7, are fixedly mounted on the side of the moving stage 6 near the gantry frame 2.

[0022] A drive box 9 is provided below the moving stage 6. Specifically, a servo cylinder 10 is fixedly installed vertically at the bottom of the moving stage 6, and the telescopic end of the servo cylinder 10 is fixedly connected to the upper part of the drive box 9. A second motor 11 is installed inside the drive box 9, and a milling cutter 12 is installed on the drive shaft of the second motor 11.

[0023] A support slide 13 is slidably mounted on the upper part of the worktable 1. A translation drive mechanism for driving the linear motion of the support slide 13 is provided between the worktable 1 and the support slide 13. The translation drive mechanism includes a second screw 14 rotatably mounted in the middle of the worktable 1, the second screw 14 being perpendicular to the direction of the first screw 4. A third motor 15 for driving the rotation of the second screw 14 is fixedly mounted on the worktable 1. A threaded sleeve 16 threadedly connected to the second screw 14 is fixedly mounted in the middle of the bottom of the support slide 13. In addition, two second slide rails 17 are symmetrically fixedly mounted on both sides of the upper part of the worktable 1, and two second sliders 18 adapted to the two second slide rails 17 are mounted on the bottom of the support slide 13.

[0024] Two vertical connecting lugs 19 are symmetrically fixed at one end of the upper part of the bearing slide 13. The upper parts of the two connecting lugs 19 are hinged to one end of the workpiece placement platform 20. An adjusting cylinder 21 is hinged between the bottom of the other end of the workpiece placement platform 20 and the upper part of the bearing slide 13. The main body end of the adjusting cylinder 21 is hinged to the upper part of the bearing slide 13, and the telescopic end of the adjusting cylinder 21 is hinged to the bottom end of the workpiece placement platform 20.

[0025] The upper part of the workpiece placement platform 20 is provided with a clamping mechanism for fixing the workpiece. Specifically, the clamping mechanism includes a fixed clamping plate 21 fixedly installed at one end of the upper part of the workpiece placement platform 20. The workpiece placement platform 20 has an installation groove 22 inside. A first clamping cylinder 23 is fixedly installed in the installation groove 22 in a direction perpendicular to the fixed clamping plate 21. The telescopic end of the first clamping cylinder 23 is fixedly connected to a sliding plate 24 that is slidably disposed in the installation groove 22. A movable clamping plate 25 parallel to the fixed clamping plate 21 is fixedly installed on the upper part of the sliding plate 24.

[0026] In addition, the clamping mechanism also includes mounting brackets 26 symmetrically fixedly arranged on both sides of the workpiece placement table 20. Each mounting bracket 26 is equipped with a horizontal second clamping cylinder 27, and the telescopic ends of the two second clamping cylinders 27 are respectively fixedly installed with side clamping plates 28.

[0027] In operation, this invention places the workpiece to be milled on a workpiece placement table. The contraction of the first clamping cylinder and two second clamping cylinders clamps the workpiece together with the fixed clamping plate, the movable clamping plate, and the two side clamping plates. If the upper surface of the workpiece to be milled is inclined, the extension of the cylinder can be adjusted to deflect the workpiece placement table, thereby adjusting the workpiece's machining surface to a horizontal state, facilitating subsequent milling. Therefore, this invention has good applicability and can clamp and fix different workpieces with different inclined surfaces, effectively reducing production line costs and improving processing efficiency.

[0028] During milling, the first screw is driven to rotate by the first motor, and the movable table threaded to the first screw can move linearly along the first screw. The second screw is driven to rotate by the third motor, and the threaded sleeve threaded to the second screw drives the bearing slide to move linearly along the second screw. Therefore, the lateral and longitudinal positions of the drive box and the milling cutter can be adjusted. The height of the milling cutter can be adjusted by the servo electric cylinder, thereby realizing automatic milling.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A CNC gantry milling machine for a CNC machining center, characterized in that: The device includes a worktable, on the upper middle of which a gantry frame with an inverted U-shaped cross-section is fixedly mounted, and a milling mechanism is mounted on the gantry frame. A load-bearing slide is slidably mounted on the upper part of the worktable, and a translation drive mechanism for driving the linear movement of the load-bearing slide is provided between the worktable and the load-bearing slide. Two connecting lugs are symmetrically fixed at one end of the upper part of the load-bearing slide, and the upper parts of the two connecting lugs are hinged to one end of a workpiece placement table. An adjusting cylinder is hinged between the bottom of the other end of the workpiece placement table and the upper part of the load-bearing slide. A clamping mechanism for fixing the workpiece is provided on the upper part of the workpiece placement table.

2. The CNC gantry milling machine for CNC machining centers according to claim 1, characterized in that: The milling mechanism includes two symmetrical mounting plates fixedly mounted on the upper part of the gantry frame. A first screw is rotatably mounted between the two mounting plates. A first motor for driving the first screw to rotate is fixedly mounted on the outer side of one of the mounting plates. A moving stage is slidably mounted between the gantry frame and the first screw. A threaded through hole adapted to the first screw is opened in the middle of the moving stage. A drive box is arranged below the moving stage. A second motor is arranged inside the drive box. A milling cutter is arranged on the drive shaft of the second motor.

3. The CNC gantry milling machine for CNC machining centers according to claim 2, characterized in that: Two first slide rails are fixedly and symmetrically along the first screw on the upper part of the gantry frame, and two first sliders, each adapted to the two first slide rails, are fixedly and symmetrically arranged on the side of the moving platform near the gantry frame.

4. The CNC gantry milling machine for CNC machining centers according to claim 2, characterized in that: A servo electric cylinder is fixedly installed at the bottom of the mobile platform, and the telescopic end of the servo electric cylinder is fixedly connected to the upper part of the drive box.

5. The CNC gantry milling machine for CNC machining centers according to claim 1, characterized in that: The translation drive mechanism includes a second screw rotatably disposed in the middle of the worktable, a third motor for driving the second screw to rotate is fixedly disposed on the worktable, and a threaded sleeve that is threadedly connected to the second screw is fixedly disposed in the middle of the bottom of the bearing slide.

6. The CNC gantry milling machine for CNC machining centers according to claim 5, characterized in that: Two second slide rails are symmetrically fixed on both sides of the upper part of the worktable, and two second sliders are respectively adapted to the two second slide rails at the bottom of the bearing slide.

7. The CNC gantry milling machine for CNC machining centers according to claim 1, characterized in that: The clamping mechanism includes a fixed clamping plate fixedly disposed at one end of the upper part of the workpiece placement platform. The workpiece placement platform has an installation groove inside. A first clamping cylinder is fixedly disposed in the installation groove along a direction perpendicular to the fixed clamping plate. The telescopic end of the first clamping cylinder is fixedly connected to a sliding plate slidably disposed in the installation groove. A movable clamping plate parallel to the fixed clamping plate is fixedly disposed on the upper part of the sliding plate.

8. The CNC gantry milling machine for CNC machining center according to claim 7, characterized in that: The clamping mechanism also includes mounting brackets symmetrically fixedly arranged on both sides of the workpiece placement platform. Each mounting bracket is provided with a horizontal second clamping cylinder, and the extension and retraction ends of the two second clamping cylinders are respectively fixedly provided with side clamping plates.

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