Gravity balance mechanism of planer type milling machine

Abstract

The utility model discloses a planer type milling machine gravity balance mechanism which comprises a planer type milling machine body and a gravity balance supporting frame, stand columns are arranged on the two sides of the upper portion of the planer type milling machine body, a top plate is arranged on the tops of the stand columns, and a fixed cross beam is arranged at the front ends of the upper portions of the stand columns. A worm sliding assembly is arranged in the middle of the rear end of the interior of the fixed cross beam, and one end of the worm sliding assembly is connected with a motor assembly. The balance seat is arranged between the sliding seat and the ram, the gravity balance supporting frames are arranged on the two sides of the balance seat, the gravity balance supporting frames and the fixed cross beam are in transmission connection through the gravity balance circular gears and the straight gears, the gear transmission mode has good stability, the moving position is not prone to deviation, and the service life of the gravity balance supporting frames is prolonged. The walking route is more accurate, the gravity balance circular gear is arranged to be of a circular structure, the gravity of the ram can be well balanced, and the stability of reciprocating motion of the ram is guaranteed.

Description

Technical Field

[0001] The utility model relates to the relevant field of gantry milling machines, in particular to a gravity balancing mechanism of a gantry milling machine. Background Art

[0002] Gantry milling machine, also known as gantry milling machine, is a milling machine with a gantry frame and a horizontal long bed. Multiple milling cutters can be used to process the surface at the same time on the gantry milling machine. The processing accuracy and production efficiency are relatively high. It is suitable for processing the plane and inclined surfaces of large workpieces in batch and mass production. CNC gantry milling machine can also process spatial curved surfaces and some special parts. The gantry milling machine consists of a gantry frame, a bed workbench and an electrical control system.

[0003] There are still certain deficiencies in the use of gantry milling machines in the prior art. Since the installation position of the slide is on one side of the beam, the center of gravity is concentrated on one side of the beam. Usually, the center of gravity is supported and controlled by a worm sliding assembly. When used for a long time, the slide will cause the beam to shift when it moves back and forth, resulting in gravity imbalance when the slide moves. Utility Model Content

[0004] The purpose of the utility model is to provide a gravity balancing mechanism for a gantry milling machine to solve the problem raised in the above-mentioned background technology that since the installation position of the slide is on one side of the beam, the center of gravity is concentrated on one side of the beam, and the center of gravity is usually supported and controlled by a worm sliding assembly. Under long-term use, when the slide moves back and forth, the beam will be offset, resulting in gravity imbalance when the slide moves.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gantry milling machine gravity balancing mechanism, comprising a gantry milling machine body and a gravity balancing support frame, columns are arranged on both sides above the gantry milling machine body, a top plate is arranged on the top of the columns, a fixed beam is arranged at the front end above the columns, a worm sliding assembly is arranged at the middle position of the rear end inside the fixed beam, one end of the worm sliding assembly is connected to a motor assembly, a slide seat is arranged above the worm sliding assembly, a balance seat is arranged at the front end of the slide seat, the front end of the balance seat is connected to a ram, a gravity balancing support frame is arranged at the front end of both sides of the balance seat, a gravity balancing circular gear is arranged inside the gravity balancing support frame, and the upper and lower positions of the gravity balancing circular gear are respectively connected to an upper spur gear and a lower spur gear, a positioning plate is arranged at the outer end of the gravity balancing support frame, shock absorbing springs are arranged on both sides inside the positioning plate, and the outer ends of the shock absorbing springs are connected to a mounting plate, and a workbench is arranged at the middle position below the inside of the gantry milling machine body.

[0006] In a further embodiment, both sides of the interior of the upper spur gear and the lower spur gear are provided with limiting protection plates, and the upper spur gear and the lower spur gear are fixedly connected to the fixed beam by a second fixing bolt.

[0007] In a further embodiment, a guiding telescopic rod is provided inside the shock absorbing spring, and both ends of the shock absorbing spring are connected to the positioning plate and the mounting plate by welding.

[0008] In a further embodiment, the mounting plate and the balancing seat are fixedly connected by a first fixing bolt, and the positioning plate and the mounting plate are of the same size.

[0009] In a further embodiment, the balancing seat is fixedly connected to the sliding seat by bolts, and the balancing seat is connected to the inside of the fixed beam by sliding inlay.

[0010] In a further embodiment, the gravity balancing circular gear is rotatably connected to the gravity balancing support frame via a bearing, and the side shape of the gravity balancing support frame is set to a triangular structure.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, a balance seat is provided between the slide seat and the ram, and gravity balance support frames are provided on both sides of the balance seat, and the gravity balance support frame and the fixed beam are connected through the gravity balance circular gear and the spur gear transmission. The gear transmission method has good stability, and the moving position is not easy to deviate, and the walking route is more accurate. The gravity balance circular gear is set as a circular structure, which can better balance the gravity of the ram and ensure the stability of the reciprocating motion of the ram. The movement between the gravity balance circular gear and the spur gear is driven by the power of the worm gear, so that the gear does not need to consume energy during the movement, thereby improving the energy-saving effect and reducing cost expenditure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a gravity balance mechanism of a gantry milling machine of the utility model;

[0014] Figure 2 It is an internal side view of the fixed crossbeam of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the gravity balance support frame of the utility model;

[0016] Figure 4 It is a top view of the lower spur gear of the utility model.

[0017] In the figure: 1. top plate; 2. motor assembly; 3. fixed crossbeam; 4. worm sliding assembly; 5. slide; 6. column; 7. workbench; 8. gantry milling machine body; 9. upper spur gear; 10. gravity balance circular gear; 11. lower spur gear; 12. balance seat; 13. gravity balance support frame; 14. slide seat; 15. mounting plate; 16. first fixing bolt; 17. shock-absorbing spring; 18. guide telescopic rod; 19. positioning plate; 20. second fixing bolt; 21. limit protection plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1-4 The utility model provides an embodiment: a gantry milling machine gravity balance mechanism, including a gantry milling machine body 8 and a gravity balance support frame 13, columns 6 are arranged on both sides above the gantry milling machine body 8, a top plate 1 is arranged on the top of the column 6, a fixed beam 3 is arranged at the front end above the column 6, a worm sliding assembly 4 is arranged at the middle position of the rear end of the fixed beam 3, one end of the worm sliding assembly 4 is connected to the motor assembly 2, a slide seat 14 is arranged above the worm sliding assembly 4, and a balance seat 12 is arranged at the front end of the slide seat 14, and a balance seat 12 is arranged on the balance seat 14. The front end of the balance seat 12 is connected to the slide 5, and the front ends of both sides of the balance seat 12 are provided with gravity balance support frames 13, and the interior of the gravity balance support frame 13 is provided with a gravity balance circular gear 10, and the upper and lower positions of the gravity balance circular gear 10 are respectively connected to the upper spur gear 9 and the lower spur gear 11, and the outer end of the gravity balance support frame 13 is provided with a positioning plate 19, and the two sides of the interior of the positioning plate are provided with shock-absorbing springs 17, and the outer ends of the shock-absorbing springs 17 are connected to the mounting plate 15, and a workbench 7 is provided in the middle position at the bottom of the interior of the gantry milling machine body 8.

[0020] The column 6 is used to support and install the fixed beam 3, the fixed beam 3 is used to install and fix the slide 5, the worm sliding assembly 4 is used to drive the slide 14 to move left and right, the balance seat 12 is used to increase the firmness of the installation of the slide 5 and the slide 14 to play a balancing role, the gravity balance support frame 13 is used to balance the gravity of the slide 5 during the movement, the positioning plate 19 is used to fix the installation position of the shock-absorbing spring 17, the shock-absorbing spring 17 is used to reduce the shock of the gravity balance support frame 13, and the mounting plate 15 is used to install and connect the gravity balance support frame 13 and the balance seat 12.

[0021] Furthermore, both sides of the interior of the upper spur gear 9 and the lower spur gear 11 are provided with limiting protection plates 21 , and the upper spur gear 9 and the lower spur gear 11 are fixedly connected to the fixed beam 3 by second fixing bolts 20 .

[0022] The limiting protection plate 21 is used to limit and position the moving position of the gravity balancing circular gear 10 .

[0023] Furthermore, a guiding telescopic rod 18 is provided inside the shock absorbing spring 17 , and both ends of the shock absorbing spring 17 are connected to the positioning plate 19 and the mounting plate 15 by welding.

[0024] The guide telescopic rod 18 is used to guide and locate the telescopic position of the damping spring 17 .

[0025] Furthermore, the mounting plate 15 is fixedly connected to the balancing seat 12 via a first fixing bolt 16 , and the positioning plate 19 is the same size as the mounting plate 15 .

[0026] The first fixing bolts 16 are used to fix the mounting plate 15 and the balancing seat 12 .

[0027] Furthermore, the balancing seat 12 is fixedly connected to the sliding seat 14 by bolts, and the balancing seat 12 is connected to the inside of the fixed beam 3 by sliding inlay.

[0028] The balancing seat 12 and the fixed cross beam 3 can move in coordination with each other through the sliding inlay connection.

[0029] Furthermore, the gravity balance circular gear 10 is rotatably connected to the gravity balance support frame 13 via a bearing, and the side shape of the gravity balance support frame 13 is set to a triangular structure.

[0030] The triangular structure can make the gravity balance support frame 13 more stable.

[0031] Working principle: When in use, the lower spur gear 11 and the upper spur gear 9 are assembled and installed at the upper and lower positions of the gravity balancing circular gear 10, and then the assembled gravity balancing support frame 13 is embedded and installed inside the fixed crossbeam 3, fixed by the second fixing bolt 20, so that the mounting plate 15 is embedded with the side of the balance seat 12, and fixed by the first fixing bolt 16, and the worm sliding assembly 4 is driven to rotate by the motor assembly 2 to move the slide seat 14 and move the position of the slide 5. At the same time, the power of the movement of the slide 5 is used to make the gravity balancing circular gear 10 roll between the lower spur gear 11 and the upper spur gear 9 to keep the gravity of the movement of the slide 5 balanced.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A gantry milling machine gravity balance mechanism, comprising a gantry milling machine body (8) and a gravity balance support frame (13), characterized in that: The gantry milling machine body (8) is provided with columns (6) on both sides above, the top of the columns (6) is provided with a top plate (1), the front end of the top of the columns (6) is provided with a fixed beam (3), the middle position of the rear end of the fixed beam (3) is provided with a worm sliding assembly (4), one end of the worm sliding assembly (4) is connected to the motor assembly (2), a slide seat (14) is provided above the worm sliding assembly (4), a balance seat (12) is provided at the front end of the slide seat (14), the front end of the balance seat (12) is connected to the ram (5), and the balance seat (14) is provided with a balancing seat (12). 2) are provided with a gravity balance support frame (13) at the front end on both sides, a gravity balance circular gear (10) is provided inside the gravity balance support frame (13), and the upper and lower positions of the gravity balance circular gear (10) are respectively connected to the upper spur gear (9) and the lower spur gear (11), a positioning plate (19) is provided at the outer end of the gravity balance support frame (13), shock-absorbing springs (17) are provided on both sides of the interior of the positioning plate, and the outer ends of the shock-absorbing springs (17) are connected to the mounting plate (15), and a workbench (7) is provided at the middle position at the lower part of the interior of the gantry milling machine body (8).

2. A gantry milling machine gravity balance mechanism according to claim 1, characterized in that: Position limiting protection plates (21) are provided on both sides of the interior of the upper spur gear (9) and the lower spur gear (11), and the upper spur gear (9) and the lower spur gear (11) are fixedly connected to the fixed crossbeam (3) via second fixing bolts (20).

3. The gravity balance mechanism of a gantry milling machine according to claim 1, characterized in that: A guide telescopic rod (18) is provided inside the shock absorbing spring (17), and both ends of the shock absorbing spring (17) are connected to the positioning plate (19) and the mounting plate (15) by welding.

4. The gravity balance mechanism of a gantry milling machine according to claim 1, characterized in that: The mounting plate (15) is fixedly connected to the balancing seat (12) via a first fixing bolt (16), and the positioning plate (19) is the same size as the mounting plate (15).

5. The gravity balance mechanism of a gantry milling machine according to claim 1, characterized in that: The balancing seat (12) and the sliding seat (14) are fixedly connected by bolts, and the balancing seat (12) and the interior of the fixed crossbeam (3) are connected by sliding embedding.

6. The gravity balance mechanism of a gantry milling machine according to claim 1, characterized in that: The gravity balance circular gear (10) is rotatably connected to the gravity balance support frame (13) via a bearing, and the side shape of the gravity balance support frame (13) is set to a triangular structure.

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