High-strength horizontal milling machine

Abstract

The invention discloses a high-strength horizontal milling machine and belongs to the technical field of horizontal milling machines. By arranging the working table capable of ascending and descending up and down and utilizing the cooperation of the driving assembly and the guide rail assembly, the working table can ascend and descend up and down, so that the weight of the spindle box is reduced, the large shearing force borne by the spindle box during high-strength cutting is reduced, and the precision in the large-back engagement milling process is improved; meanwhile, reduction of equipment precision after long-time use is avoided; by arranging the locking assembly, the locking assembly locks the working table in the high-strength large-back-engagement machining process, the situation that the working table sinks when the spindle of the spindle box exerts increased pressure on the working table in the milling process is avoided, and therefore the precision in the large-back-engagement milling process is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of horizontal milling machines, and in particular relates to a high-strength horizontal milling machine. Background Art

[0002] A milling machine is a widely used machine tool. It can process planes (horizontal and vertical surfaces), grooves (keyways, T-slots, dovetail grooves, etc.), toothed parts (gears, spline shafts, sprockets), spiral surfaces (threads, spiral grooves) and various curved surfaces. In addition, it can also be used for machining the surface of a rotating body, machining inner holes and cutting. When the milling machine is working, the workpiece is mounted on a workbench or an accessory such as a dividing head. The rotation of the milling cutter is the main motion, supplemented by the feed motion of the workbench or milling head, so that the workpiece can obtain the desired machining surface. Due to multi-blade intermittent cutting, the productivity of the milling machine is relatively high. Simply put, a milling machine is a machine tool that can perform milling, drilling and boring on workpieces.

[0003] In the manufacturing process of existing milling machine equipment, the movement in the Z-axis direction is usually achieved by raising and lowering the spindle box. Therefore, the spindle box and the servo assembly used to control the movement of the spindle box are heavy. When this structure is used for high-intensity milling planes or drilling, the spindle box will be subjected to strong lateral shear force and reverse force, which will lead to reduced accuracy of the spindle box in the Z-axis direction after long-term use. Summary of the invention

[0004] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a high-strength horizontal milling machine.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: a high-strength horizontal milling machine, comprising a base, a Y-axis slide rail and a spindle box arranged on the Y-axis slide rail, a workbench is arranged above the base, a plurality of guide rail assemblies, a plurality of drive assemblies and a plurality of locking assemblies are arranged between the workbench and the base, a height detection assembly is arranged on the spindle box, the locking assembly is arranged at the middle position of the lower surface of the workbench, the guide rail assembly is arranged on the left and right sides of the locking assembly, the drive assembly is arranged on the outside of the guide rail assembly, and the plurality of guide rail assemblies, drive assemblies and locking assemblies are equidistantly distributed along the X direction of the workbench.

[0006] Preferably, the driving assembly includes a ball screw, a screw nut and a reduction motor, the reduction motor is fixed to the bottom of the base, the screw nut is arranged on the lower surface of the workbench, the ball screw and the screw nut are connected, the rotation of the reduction motor drives the ball screw to rotate, and the relative movement of the screw nut and the ball screw drives the workbench to move up and down.

[0007] Preferably, the guide rail assembly and the locking assembly each include a slide seat and a slide rail, the slide seat is arranged on a base, the slide rail is provided with a lower surface of a workbench, and a sliding connection between the two is achieved by the slide rail penetrating into the slide seat.

[0008] Preferably, the locking assembly further comprises two groups of tightening cylinders symmetrically arranged with respect to the left and right sides of the slide rails, a pressure plate being provided on the protruding end of each of the tightening cylinders, matching planes being provided on the left and right sides of the slide rails in the locking assembly, the tightening cylinders being fixed on a base, and the tightening cylinders being extended and pressed on the matching planes on both sides of the slide rails through the pressure plates on the protruding ends, thereby clamping and fixing the slide rails in the locking assembly.

[0009] Preferably, the height detection component comprises a shell, a detection slide bar is slidably connected inside the shell, a spring is connected between the top of the detection slide bar and the inner wall of the shell, and a contact is provided at the bottom of the detection slide bar.

[0010] Preferably, a matching grating ruler is provided on the inner wall of the housing and on the detection slide bar.

[0011] The beneficial effects of the present invention are as follows: by arranging a worktable that can be lifted up and down, and utilizing the cooperation of a driving assembly and a guide rail assembly, the worktable can be lifted up and down, thereby reducing the weight of the spindle box and reducing the large shear force on the spindle box during high-intensity chip cutting, thereby improving the accuracy in the milling process of large back cutting, and avoiding the reduction in equipment accuracy after long-term use; by arranging a locking assembly, the locking assembly locks the worktable during high-intensity large back cutting processing, thereby avoiding the situation where the worktable sinks when the spindle of the spindle box applies increased pressure to the worktable during the milling process, thereby improving the accuracy in the milling process of large back cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the locking assembly of the present invention;

[0014] Figure 3 It is a structural schematic diagram of the height detection component of the present invention.

[0015] In the figure: 1. base; 2. Y-axis slide rail; 3. spindle box; 4. workbench; 5. ball screw; 6. screw nut; 7. reduction motor; 8. slide seat; 9. slide rail; 10. tightening cylinder; 11. pressure plate; 12. matching plane; 13. housing; 14. detection slide rod; 15. spring; 16. contact; 17. grating ruler. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] Embodiment: A high strength horizontal milling machine, such as Figure 1-Figure 3 As shown, it includes a base 1, a Y-axis slide rail 2 and a spindle box 3 arranged on the Y-axis slide rail 2, a workbench 4 is arranged above the base 1, and multiple groups of guide rail assemblies, multiple groups of drive assemblies and multiple groups of locking assemblies are arranged between the workbench 4 and the base 1, a height detection assembly is arranged on the spindle box 3, the locking assembly is arranged in the middle position of the lower surface of the workbench 4, the guide rail assembly is arranged on the left and right sides of the locking assembly, and the drive assembly is arranged on the outside of the guide rail assembly. Multiple groups of the guide rail assemblies, drive assemblies and locking assemblies are equidistantly distributed along the X direction of the workbench 4; the drive assembly includes a ball screw 5, a screw nut 6 and a reduction motor 7, the reduction motor 7 is fixed to the bottom of the base 1, the screw nut 6 is arranged on the lower surface of the workbench 4, the ball screw 5 is connected to the screw nut 6, the rotation of the reduction motor 7 drives the ball screw 5 to rotate, and the relative movement of the screw nut 6 and the ball screw 5 drives the workbench 4 to move up and down.

[0018] The guide rail assembly and the locking assembly each include a slide 8 and a slide rail 9. The slide 8 is arranged on the base 1, and the slide rail 9 is provided with the lower surface of the workbench 4. The slide rail 9 is inserted into the slide 8 to realize the sliding connection between the two. The locking assembly also includes two groups of tightening cylinders 10 which are symmetrically arranged with the slide rail 9. A pressing plate 11 is provided on the protruding end of each of the tightening cylinders 10. The left and right sides of the slide rail 9 in the locking assembly are provided with matching planes 12. The tightening cylinders 10 are fixed on the base 1. The tightening cylinders 10 extend out through the pressing plate 11 on the protruding end and press on the matching planes 12 on both sides of the slide rail 9 to clamp and fix the slide rail 9 in the locking assembly.

[0019] The height detection component includes a shell 13, in which a detection slide bar 14 is slidably connected, a spring 15 is connected between the top of the detection slide bar 14 and the inner wall of the shell 13, and a contact 16 is provided at the bottom of the detection slide bar 14; the inner wall of the shell 13 and the detection slide bar 14 are provided with a grating scale 17 that cooperates with each other.

[0020] Principle of the present invention: When in use, the ball screw 5 is driven to rotate by the reduction motor 7, driving the workbench 4 to move up and down. When it moves into place, the tightening cylinders 10 in the multiple locking assemblies are controlled to extend, and the two ends of the slide rails 9 in the locking assemblies are clamped to prevent the workbench 4 from moving up and down. By clamping the slide rails 9, the force on the ball screw 5 during processing can be reduced. The height detection mechanism can facilitate the detection of the height of the workpiece on the workbench 4. By moving the workbench 4 up, the top of the workpiece is brought into contact with the contact 16 at the bottom of the monitoring slide rod, driving the monitoring slide rod to slide relatively. The sliding of the detection slide rod 14 will be detected by the grating ruler 17, so that the height position of the workpiece can be obtained by matching the encoding of the reduction motor 7, thereby realizing rapid positioning.

[0021] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A high-strength horizontal milling machine, comprising a base (1), a Y-axis slide rail (2) and a spindle box (3) arranged on the Y-axis slide rail (2), characterized in that: A workbench (4) is provided above the base (1); a plurality of guide rail assemblies, a plurality of drive assemblies and a plurality of locking assemblies are provided between the workbench (4) and the base (1); a height detection assembly is provided on the spindle box (3); the locking assembly is provided at a middle position of the lower surface of the workbench (4); the guide rail assemblies are provided on the left and right sides of the locking assembly; the drive assembly is provided on the outside of the guide rail assembly; and the plurality of guide rail assemblies, drive assemblies and locking assemblies are equidistantly distributed along the X direction of the workbench (4).

2. A high-strength horizontal milling machine according to claim 1, characterized in that: The driving assembly comprises a ball screw (5), a screw nut (6) and a reduction motor (7); the reduction motor (7) is fixed to the bottom of the base (1); the screw nut (6) is arranged on the lower surface of the workbench (4); the ball screw (5) and the screw nut (6) are connected; the rotation of the reduction motor (7) drives the ball screw (5) to rotate; and the relative movement of the screw nut (6) and the ball screw (5) drives the workbench (4) to move up and down.

3. A high-strength horizontal milling machine according to claim 1, characterized in that: The guide rail assembly and the locking assembly both include a slide seat (8) and a slide rail (9); the slide seat (8) is arranged on the base (1); the slide rail (9) is provided with the lower surface of the workbench (4); and the slide rail (9) penetrates into the slide seat (8) to achieve a sliding connection between the two.

4. A high-strength horizontal milling machine according to claim 3, characterized in that: The locking assembly further comprises two groups of tightening oil cylinders (10) symmetrically arranged on the left and right sides of the slide rail (9), each of the tightening oil cylinders (10) is provided with a pressing plate (11) on the protruding end, and the left and right sides of the slide rail (9) in the locking assembly are provided with matching planes (12). The tightening oil cylinders (10) are fixed on the base (1), and the tightening oil cylinders (10) are extended through the pressing plates (11) on the protruding ends to press on the matching planes (12) on both sides of the slide rail (9), thereby clamping and fixing the slide rail (9) in the locking assembly.

5. The high-strength horizontal milling machine according to claim 1, characterized in that: The height detection component comprises a shell (13), a detection slide bar (14) is slidably connected inside the shell (13), a spring (15) is connected between the top of the detection slide bar (14) and the inner wall of the shell (13), and a contact (16) is provided at the bottom of the detection slide bar (14).

6. A high-strength horizontal milling machine according to claim 5, characterized in that: A matching grating ruler (17) is provided on the inner wall of the housing (13) and on the detection slide bar (14).

Images