阅读说明：本技术 一种大龙门铣床 (Big gantry milling machine ) 是由 朱建华 朱明兴 于 2021-03-01 设计创作，主要内容包括：本发明公开了一种大龙门铣床,包括有铣平机本体,铣平机本体的机架上固定安装有X轴丝杆副、Y轴丝杆副及刀头,所述X轴丝杆副的一端转动连接有前轴承座,所述X轴丝杆副的一端还连接有单列向心推力球轴承,所述X轴丝杆副的另一端转动连接有后轴承座,且所述X轴丝杆副的另一端还安装有联轴套一,所述Y轴丝杆副的一端转动连接有前轴承座二,所述Y轴丝杆副的一端还连接有单列向心推力球轴承二,所述Y轴丝杆副的另一端转动连接有后轴承座二,所述Y轴丝杆副的另一端还固定安装有同步带轮。本发明可以吊运至工件外围,并骑跨在工件上面：定位、调整、校平、固定后即进行切削加工,多块形平面分四次将底座加工完成。(The invention discloses a large gantry milling machine which comprises a milling machine body, wherein an X-axis screw pair, a Y-axis screw pair and a tool bit are fixedly arranged on a rack of the milling machine body, one end of the X-axis screw pair is rotatably connected with a front bearing seat, one end of the X-axis screw pair is further connected with a single-row radial thrust ball bearing, the other end of the X-axis screw pair is rotatably connected with a rear bearing seat, a coupling sleeve I is further arranged at the other end of the X-axis screw pair, one end of the Y-axis screw pair is rotatably connected with a front bearing seat II, one end of the Y-axis screw pair is further connected with a single-row radial thrust ball bearing II, the other end of the Y-axis screw pair is rotatably connected with a rear bearing seat II, and a synchronous belt wheel is further fixedly arranged at the other end of the Y-axis screw pair. The invention can be hoisted to the periphery of the workpiece and bestrides on the workpiece: and after positioning, adjusting, leveling and fixing, cutting processing is carried out, and the base is processed by the multi-block plane for four times.)

1. The utility model provides a big longmen milling machine, is including milling flat-bed machine body (17), its characterized in that: an X-axis screw pair (9), a Y-axis screw pair (26) and a tool bit (34) are fixedly mounted on a rack of a milling machine body (17), one end of the X-axis screw pair (9) is rotatably connected with a front bearing seat (3), one end of the X-axis screw pair (9) is further connected with a single-row radial thrust ball bearing (4), a flexible seat (8) is sleeved in the middle of the X-axis screw pair (9), the other end of the X-axis screw pair (9) is rotatably connected with a rear bearing seat (12), a coupling sleeve I (15) is further mounted at the other end of the X-axis screw pair (9), one end of the Y-axis screw pair (26) is rotatably connected with a front bearing seat II (21), one end of the Y-axis screw pair (26) is further connected with a single-row radial thrust ball bearing II (20), a flexible seat II (25) is sleeved in the middle of the Y-axis screw pair (26), and the other end of the Y-axis screw pair (26) is rotatably connected with a rear bearing seat II, and a synchronous belt wheel (32) is also fixedly arranged at the other end of the Y-axis screw rod pair (26).

2. A large gantry milling machine according to claim 1, characterized in that: four groups of stand columns are fixedly connected to the bottom of a large table-board of the milling flat machine body (17), and the large table-board and the stand columns are combined to form a gantry type milling mechanism.

3. A large gantry milling machine according to claim 1, characterized in that: a shaft blocking cover (2) is installed in the front bearing seat (3), and an outer bearing cover (1) is fixedly installed on one side of the front bearing seat (3).

4. A large gantry milling machine according to claim 1, characterized in that: one end, close to the front bearing seat (3), of the X-axis screw rod pair (9) is sleeved with a spacer ring I (7), a framework type oil seal (6) is sleeved outside the spacer ring I (7), and an oil seal cover (5) is sleeved outside the framework type oil seal (6).

5. A large gantry milling machine according to claim 1, characterized in that: one pot head that X axle screw pair (9) are close to back bearing frame (12) is equipped with space ring two (10), one side fixed mounting of back bearing frame (12) has bearing to lead to lid (11), just the outside of space ring two (10) is located to bearing cover (11) cover, just X axle screw pair (9) are close to the one end of back bearing frame (12) and still the screw thread install round nut (13), one side of round nut (13) is laminated the setting mutually with one side of back bearing frame (12).

6. A large gantry milling machine according to claim 1, characterized in that: the X-axis screw rod pair (9) is connected with the first coupling sleeve (15) through a flat key (14), and the X-axis screw rod pair (9) is fixedly connected with the first coupling sleeve (15) through a cylindrical head hexagon socket head cap screw (16).

7. A large gantry milling machine according to claim 1, characterized in that: install axle retaining ring (19) in front bearing seat two (21), one side fixed mounting of front bearing seat two (21) has outer bearing cap two (18), the pot head that Y axle screw pair (26) are close to front bearing seat two (21) is equipped with spacer ring three (24), the outside cover of spacer ring three (24) is equipped with skeleton type oil blanket two (23), the outside cover of skeleton type oil blanket two (23) is equipped with oil blanket cover two (22).

8. A large gantry milling machine according to claim 1, characterized in that: one side of the rear bearing seat II (29) is fixedly provided with a bearing through cover II (28) through a cylindrical head hexagon socket screw II (27), a round nut II (30) is arranged at one end of the Y-axis screw rod pair (26) close to the rear bearing seat II (29) in a threaded mode, and one side of the round nut II (30) is attached to one side of the rear bearing seat II (29).

9. A large gantry milling machine according to claim 1, characterized in that: one end of the Y-axis screw rod pair (26) is connected with the synchronous belt wheel (32) through a flat key II (31), and one end of the Y-axis screw rod pair (26) is fixedly connected with the synchronous belt wheel (32) through a cylindrical head hexagon socket head cap screw III (33).

Technical Field

The invention belongs to the technical field of milling machines, and particularly relates to a large gantry milling machine.

Background

The milling machine mainly refers to a machine tool for processing various surfaces of a workpiece by using a milling cutter. Typically the milling cutter is moved primarily in a rotary motion and the movement of the workpiece and the milling cutter is a feed motion. It can be used for processing plane, groove, various curved surfaces and gears.

The milling machine is a machine tool for milling a workpiece by using a milling cutter. The milling machine can mill planes, grooves, gear teeth, threads and spline shafts, can also process complex molded surfaces, has higher efficiency than a planer, and is widely applied to mechanical manufacturing and repairing departments.

The milling machine is a machine tool with wide application, and can process planes (horizontal planes and vertical planes), grooves (key grooves, T-shaped grooves, dovetail grooves and the like), tooth dividing parts (gears, spline shafts and chain wheels), spiral surfaces (threads and spiral grooves) and various curved surfaces on the milling machine. In addition, the method can be used for machining the surface and inner hole of the revolving body, cutting off the revolving body, and the like. When the milling machine works, a workpiece is arranged on a workbench or accessories such as an indexing head, the milling cutter rotates to move mainly, and the workpiece can obtain a required processing surface by the aid of the feeding motion of the workbench or the milling head. Since the multi-edge intermittent cutting is performed, the productivity of the milling machine is high. In short, a milling machine is a machine tool that can mill, drill, and bore a workpiece.

At present, milling equipment meeting the requirements of large planes and large strokes is lacked in the market. Therefore, a large gantry milling machine needs to be provided.

Disclosure of Invention

The invention aims to provide a large gantry milling machine, which can be hoisted to the periphery of a workpiece and bestrides on the workpiece: the base is machined four times by the aid of the multi-block plane, the machine works stably, noise is low, vibration is avoided, a machine tool does not need to be fixed by feet, convenience is achieved, and workload of the machine tool is reduced so as to solve the problems in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme: a large gantry milling machine comprises a milling flat machine body, wherein an X-axis screw rod pair, a Y-axis screw rod pair and a tool bit are fixedly arranged on a frame of the milling flat machine body, one end of the X-axis screw rod pair is rotatably connected with a front bearing seat, one end of the X-axis screw rod pair is also connected with a single-row radial thrust ball bearing, the middle part of the X-axis screw rod pair is sleeved with a flexible seat, the other end of the X-axis screw rod pair is rotatably connected with a rear bearing seat, and the other end of the X-axis screw rod pair is also provided with a coupling sleeve I, one end of the Y-axis screw rod pair is rotatably connected with a front bearing seat II, one end of the Y-axis screw rod pair is also connected with a second single-row radial thrust ball bearing, the middle part of the Y-axis screw rod pair is sleeved with a second flexible seat, the other end of the Y-axis screw rod pair is rotatably connected with a second rear bearing seat, and the other end of the Y-axis screw rod pair is fixedly provided with a synchronous belt pulley.

Preferably, four groups of upright columns are fixedly connected to the bottom of a large table-board of the milling flat machine body, and the large table-board and the upright columns are combined to form the gantry type milling mechanism.

Preferably, a shaft baffle cover is installed in the front bearing seat, and an outer bearing cover is fixedly installed on one side of the front bearing seat.

Preferably, a first spacer ring is sleeved at one end, close to the front bearing seat, of the X-axis screw rod pair, a framework type oil seal is sleeved outside the first spacer ring, and an oil seal cover is sleeved outside the framework type oil seal.

Preferably, the pot head that X axle lead screw is vice to be close to the rear axle bearing frame is equipped with space ring two, one side fixed mounting of rear axle bearing has the bearing to lead to the lid, just the outside of space ring two is located to the bearing cover, just the round nut is installed to the one end that X axle lead screw is vice to be close to the rear axle bearing frame still screw thread, one side of round nut and one side laminating setting of rear axle bearing frame mutually.

Preferably, the X-axis screw rod pair is connected with the first coupling sleeve through a flat key, and the X-axis screw rod pair is fixedly connected with the first coupling sleeve through a cylindrical head hexagon socket head cap screw.

Preferably, a shaft retainer ring is installed in the front bearing seat II, an outer bearing cover II is fixedly installed on one side of the front bearing seat II, a spacer ring III is sleeved on one end, close to the front bearing seat II, of the Y-axis screw rod pair, a framework type oil seal II is sleeved on the outer portion of the spacer ring III, and an oil seal cover II is sleeved on the outer portion of the framework type oil seal II.

Preferably, a bearing through cover II is fixedly mounted on one side of the rear bearing seat II through a cylindrical head hexagon socket head cap screw II, a round nut II is mounted at one end of the Y-axis screw rod pair close to the rear bearing seat II through threads, and one side of the round nut II is attached to one side of the rear bearing seat II.

Preferably, one end of the Y-axis screw rod pair is connected with the synchronous belt pulley through a flat key II, and one end of the Y-axis screw rod pair is fixedly connected with the synchronous belt pulley through a cylindrical head hexagon socket head cap screw III.

The invention has the technical effects and advantages that: compared with the prior art, the large gantry milling machine provided by the invention has the following advantages:

the machine tool can be lifted to the periphery of a workpiece and straddles the workpiece: cutting processing is carried out after positioning, adjusting, leveling and fixing, and the base is processed by a plurality of block planes for four times;

the machine has stable work, low noise and no vibration, the machine tool does not need to be fixed by feet, the machine tool is convenient, and the workload of the machine tool is reduced.

Drawings

FIG. 1 is a schematic top view of a large table-board of a large gantry milling machine according to the present invention;

FIG. 2 is a schematic structural view of a main view of a large gantry milling machine of the present invention;

FIG. 3 is a schematic sectional structure view of an X-axis screw assembly of a large gantry milling machine according to the present invention;

FIG. 4 is a schematic sectional structure view of a Y-axis screw assembly of a large gantry milling machine of the present invention;

FIG. 5 is a schematic sectional view of the tool bit assembly of the milling machine of the large gantry of the present invention.

In the figure: 1. an outer bearing cap; 2. a shaft stopper cover; 3. a front bearing seat; 4. a single row angular contact ball bearing; 5. sealing the oil cover; 6. framework type oil seal; 7. a space ring I; 8. a flexible seat; 9. an X-axis screw pair; 10. A second space ring; 11. a bearing through cover; 12. a rear bearing seat; 13. a round nut; 14. a flat bond; 15. the coupling sleeve I; 16. a socket head cap screw; 17. a milling machine body; 18. a second outer bearing cover; 19. a shaft retainer ring; 20. a second single-row radial thrust ball bearing; 21. a front bearing seat II; 22. an oil seal cover II; 23. a framework type oil seal II; 24. a third space ring; 25. a flexible seat II; 26. a Y-axis screw pair; 27. a second socket head cap screw; 28. a second bearing through cover; 29. a second rear bearing seat; 30. a round nut II; 31. a flat key II; 32. a synchronous pulley; 33. a third socket head cap screw; 34. a cutter head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other or mutually interacted. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the specification.

The invention provides a technical scheme as shown in figures 1-5: a large gantry milling machine comprises a milling machine body 17, an X-axis screw pair 9, a Y-axis screw pair 26 and a tool bit 34 are fixedly arranged on a frame of the milling machine body 17, one end of the X-axis screw pair 9 is rotatably connected with a front bearing seat 3, one end of the X-axis screw pair 9 is also connected with a single-row radial thrust ball bearing 4, a flexible seat 8 is sleeved in the middle of the X-axis screw pair 9, the other end of the X-axis screw pair 9 is rotatably connected with a rear bearing seat 12, and the other end of the X-axis screw pair 9 is also provided with a coupling sleeve I15, one end of a Y-axis screw pair 26 is rotatably connected with a front bearing seat II 21, one end of the Y-axis screw pair 26 is also connected with a single-row radial thrust ball bearing II 20, the middle part of the Y-axis screw pair 26 is sleeved with a flexible seat II 25, the other end of the Y-axis screw pair 26 is rotatably connected with a rear bearing seat II 29, and the other end of the Y-axis screw pair 26 is also fixedly provided with a synchronous belt pulley 32.

In order to facilitate the support of the milling flat machine body 17, four groups of upright posts are fixedly connected to the bottom of the large table-board of the milling flat machine body 17, and the large table-board and the upright posts are combined to form a gantry type milling mechanism.

In order to facilitate the feeding use of the X-axis lead screw pair 9 during the work, the shaft baffle cover 2 is arranged in the front bearing seat 3, an outer bearing cover 1 is fixedly arranged on one side of a front bearing seat 3, a first spacer ring 7 is sleeved on one end, close to the front bearing seat 3, of an X-axis screw rod pair 9, a framework type oil seal 6 is sleeved on the outer portion of the first spacer ring 7, an oil seal cover 5 is sleeved on the outer portion of the framework type oil seal 6, a second spacer ring 10 is sleeved on one end, close to a rear bearing seat 12, of the X-axis screw rod pair 9, a bearing through cover 11 is fixedly arranged on one side of the rear bearing seat 12, and the bearing through cover 11 is sleeved outside the spacer ring II 10, and a round nut 13 is further installed at one end of the X-axis screw rod pair 9 close to the rear bearing seat 12 in a threaded manner, one side of the round nut 13 is attached to one side of the rear bearing seat 12, specifically, the X-axis screw rod pair 9 is connected with a first 15 key of the coupling sleeve through a flat key 14, and the X-axis screw pair 9 is fixedly connected with the coupling sleeve I15 through a cylindrical head hexagon socket head cap screw 16.

In order to facilitate the feeding use of the Y-axis screw pair 26 during working, a shaft retainer ring 19 is installed in the front bearing seat II 21, an outer bearing cover II 18 is fixedly installed on one side of the front bearing seat II 21, a spacer ring III 24 is sleeved on one end, close to the front bearing seat II 21, of the Y-axis screw pair 26, a framework type oil seal II 23 is sleeved outside the spacer ring III 24, an oil seal cover II 22 is sleeved outside the framework type oil seal II 23, a bearing through cover II 28 is fixedly installed on one side of the rear bearing seat II 29 through a cylindrical head hexagon socket head cap screw II 27, and one end of the Y-axis screw rod pair 26 close to the rear bearing seat II 29 is provided with a round nut II 30 in a threaded manner, one side of the round nut II 30 is attached to one side of the rear bearing seat II 29, one end of the Y-axis screw rod pair 26 is connected with a synchronous belt wheel 32 through a flat key II 31, and one end of the Y-axis screw pair 26 is fixedly connected with the synchronous pulley 32 through a third hexagon socket head cap screw 33.

The working principle is as follows: the machine tool can be lifted to the periphery of a workpiece and straddles the workpiece: the base is machined four times by the aid of the multi-block plane, the machine works stably, noise is low, vibration is avoided, a machine tool does not need to be fixed by feet, convenience is achieved, and workload of the machine arranging is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.