阅读说明：本技术 用于加工立车回转工作台t型槽的三轴铣削机构 (Three-axis milling mechanism for machining T-shaped groove of rotary table of vertical lathe ) 是由 张文广 李志博 何伟光 刘伟 于 2020-06-24 设计创作，主要内容包括：用于加工立车回转工作台T型槽的三轴铣削机构,属于机床技术领域,以解决现有的立车回转工作台直径较大,采用常规的分度盘无法实现分度,采用龙门铣加工,需要换位装卡,费时费力,使制造成本较高的问题。本发明包括主轴箱、调速驱动机构、三个主轴和三个主轴套筒；主轴箱上设有三个平行布置的主轴套筒,每个主轴套筒内转动设置有一个主轴,每个主轴上设有一个齿轮,每个齿轮与每个主轴通过键连接,其中一个主轴上的齿轮与另外两个主轴上的齿轮啮合,三个主轴中的一个主轴上的齿轮通过调速驱动机构驱动。本发明适用于加工回转工作台的专用机床。(A triaxial mills mechanism for processing merry go round machine swivel work head T type groove belongs to lathe technical field to it is great to solve current merry go round machine swivel work head diameter, adopts the unable graduation that realizes of conventional graduated disk, adopts the longmen to mill processing, needs the transposition dress card, wastes time and energy, makes the higher problem of manufacturing cost. The invention comprises a main shaft box, a speed regulation driving mechanism, three main shafts and three main shaft sleeves; the main shaft box is provided with three main shaft sleeves which are arranged in parallel, each main shaft sleeve is rotatably provided with a main shaft, each main shaft is provided with a gear, each gear is connected with each main shaft through a key, the gear on one main shaft is meshed with the gears on the other two main shafts, and the gear on one main shaft in the three main shafts is driven through a speed regulation driving mechanism. The invention is suitable for the special machine tool for processing the rotary worktable.)

1. A triaxial milling machine constructs for processing merry go round machine swivel work head T type groove, its characterized in that: comprises a main shaft box (1), a speed regulation driving mechanism (2), three main shafts (3) and three main shaft sleeves (4);

the spindle box (1) is provided with three spindle sleeves (4) which are arranged in parallel, each spindle sleeve (4) is rotatably provided with one spindle (3), each spindle (3) is provided with one gear (6), each gear (6) is connected with each spindle (3) through a key, the gear (6) on one spindle (3) is meshed with the gears (6) on the other two spindles (3), and the gear (6) on one spindle (3) in the three spindles (3) is driven through the speed regulation driving mechanism (2).

2. The three-axis milling mechanism for machining a T-shaped groove of a rotary table of a vertical lathe as claimed in claim 1, wherein: the speed regulation driving mechanism (2) comprises a motor (2-1), an IV shaft (2-2), an IVa shaft (2-3), a V shaft (2-4), a VI shaft (2-5) and two shifting forks (2-7);

an IV shaft (2-2), an IVa shaft (2-3), a V shaft (2-4) and a VI shaft (2-5) are rotationally arranged on the spindle box (1), the VI shaft (2-5) is driven by a motor (2-1), the VI shaft (2-5) is fixedly provided with a gear a (2-8), the IV shaft (2-2) is fixedly provided with a gear b (2-9), a gear c (2-10), a gear d (2-11) and a gear e (2-12), the gear a (2-8) is meshed with the gear b (2-9), the IVa shaft (2-3) is fixedly provided with a gear f (2-13), a gear g (2-14) and a gear k (2-15), a gear (6) on one spindle (3) of the three spindles (3) is meshed with the gear f (2-13), a duplicate gear (2-16) and a triple gear (2-17) are arranged on the V shaft (2-4) in a sliding manner, and the duplicate gear (2-16) and the triple gear (2-17) can slide on the V shaft (2-4) through a shifting fork (2-7) respectively;

when the shifting fork (2-7) shifts the duplicate gears (2-16), the g gears (2-14) and the k gears (2-15) can be meshed with the duplicate gears (2-16) respectively;

when the shifting fork (2-7) shifts the triple gear (2-17), the gear c (2-10), the gear d (2-11) and the gear e (2-12) can be meshed with the triple gear (2-17) respectively.

3. The three-axis milling mechanism for machining a T-shaped groove of a rotary table of a vertical lathe as claimed in claim 1, wherein: the double gears (2-16) are integrated structures formed by machining an H1 gear and an H2 gear, the H1 gear and the g gear (2-14) can be meshed with each other, and the H2 gear and the k gear (2-15) can be meshed with each other.

4. The three-axis milling mechanism for machining a T-shaped groove of a rotary table of a vertical lathe as claimed in claim 1, wherein: the triple gear (2-17) is an integrated structure formed by a T1 gear, a T2 gear and a T3 gear, wherein the T1 gear can be meshed with the c gear (2-10), the T2 gear can be meshed with the d gear (2-11), and the T3 gear can be meshed with the e gear (2-12).

5. The three-axis milling mechanism for machining a T-shaped groove of a rotary table of a vertical lathe as claimed in claim 1, wherein: the device is characterized by further comprising three sets of axial feeding adjusting mechanisms (7), wherein each set of axial feeding adjusting mechanism (7) comprises a worm wheel (7-1), a worm (7-2) and a mounting seat (7-3), the worm wheel (7-1) and the worm (7-2) are rotatably arranged on the mounting seat (7-3), the worm wheel (7-1) and the worm (7-2) are meshed with each other, and the mounting seat (7-3) on each set of axial feeding adjusting mechanism (7) is fixed on the spindle box (1);

each spindle sleeve (4) is arranged on the spindle box (1) in a sliding mode through a key, a plurality of wheel grooves (4-1) with equal intervals are machined in the outer surface of each spindle sleeve (4), a worm wheel (7-1) on each set of axial feeding adjusting mechanism (7) is matched with the wheel grooves (4-1) on each spindle sleeve (4), and when the worm (7-2) is rotated, the spindle sleeves (4) can move axially along the spindle sleeves.

6. The special machine tool milling head feeding mechanism according to claim 1, characterized in that: the locking mechanism comprises a screw rod (8), a bushing (9), a first internal thread sleeve (10) and a second internal thread sleeve (11); the spindle box (1) is provided with three parallel unthreaded holes (1-1) and three parallel spindle sleeve holes (1-2), each spindle sleeve (4) is arranged in the spindle sleeve hole (1-2) in a sliding mode through a key, each unthreaded hole (1-1) and each spindle sleeve hole (1-2) are perpendicular to each other and are communicated with each other, a lining (9) is fixed in each unthreaded hole (1-1), a first internal thread sleeve (10) and a second internal thread sleeve (11) are arranged in each unthreaded hole (1-1) in a sliding mode, a screw (8) penetrates through the lining (9) and is in clearance fit with the lining (9), the first internal thread sleeve (10) and the second internal thread sleeve (11) are respectively in threaded fit with the screw (8), and the internal thread rotating directions of the first internal thread sleeve (10) and the second internal thread sleeve (11) are opposite, arc surfaces matched with the outer surface of the main shaft sleeve (4) are processed on the first internal thread sleeve (10) and the second internal thread sleeve (11).

7. The special machine tool milling head feeding mechanism according to claim 6, characterized in that: the first internal thread sleeve (10) and the second internal thread sleeve (11) in each unthreaded hole (1-1) are positioned on two sides of the axis of the unthreaded hole (1-1).

Technical Field

The invention relates to a special machine tool milling mechanism, and belongs to the technical field of machine tools.

Background

A vertical lathe rotary worktable is generally used for processing workpieces with larger diameters, as shown in figure 1, the diameter of the worktable is 4.5m, four groups of T-shaped grooves distributed at 90 degrees are arranged on the vertical lathe worktable, and two T-shaped grooves are arranged in each group and are parallel to each other. The T-shaped groove needs gantry milling processing during processing, and needs to be replaced and clamped for multiple times during processing, which wastes time and labor and causes higher manufacturing cost.

Disclosure of Invention

The invention provides a three-axis milling mechanism for processing a T-shaped groove of a vertical lathe rotary worktable, aiming at solving the problems that the diameter of the existing vertical lathe rotary worktable is larger, the gantry milling is adopted for processing, the transposition and clamping are needed, the time and the labor are wasted, and the manufacturing cost is higher.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the three-shaft milling mechanism for processing the T-shaped groove of the rotary worktable of the vertical lathe comprises a main shaft box, a speed regulation driving mechanism, three main shafts and three main shaft sleeves;

the main shaft box is provided with three main shaft sleeves which are arranged in parallel, each main shaft sleeve is rotatably provided with a main shaft, each main shaft is provided with a gear, each gear is connected with each main shaft through a key, the gear on one main shaft is meshed with the gears on the other two main shafts, and the gear on one main shaft in the three main shafts is driven through a speed regulation driving mechanism.

Further, the speed regulation driving mechanism comprises a motor, an IV shaft, an IVa shaft, a V shaft, a VI shaft and two shifting forks;

the IV shaft, the IVa shaft, the V shaft and the VI shaft are all rotationally arranged on the spindle box, the VI shaft is driven by a motor, a gear a is fixedly arranged on the VI shaft, a gear b, a gear c, a gear d and a gear e are fixedly arranged on the IV shaft, the gear a is meshed with the gear b, a gear f, a gear g and a gear k are fixedly arranged on the IVa shaft, a gear on one of the three main shafts is meshed with the gear f, a duplicate gear and a triple gear are arranged on the V shaft in a sliding mode, and the duplicate gear and the triple gear can slide on the V shaft through a shifting fork respectively;

when the shifting fork shifts the duplicate gear, the g gear and the k gear can be meshed with the duplicate gear respectively;

when the shifting fork shifts the triple gear, the gear c, the gear d and the gear e can be meshed with the triple gear respectively.

Further, the duplicate gear is an integral structure formed by machining an H1 gear and an H2 gear, the H1 gear and the g gear can be meshed with each other, and the H2 gear and the k gear can be meshed with each other.

Further, the triple gear is an integrated structure formed by a T1 gear, a T2 gear and a T3 gear, wherein the T1 gear can be meshed with the c gear, the T2 gear can be meshed with the d gear, and the T3 gear can be meshed with the e gear.

Furthermore, the device also comprises three sets of axial feeding adjusting mechanisms, wherein each set of axial feeding adjusting mechanism 7 comprises a worm wheel, a worm and a mounting seat, the worm wheel and the worm are rotatably arranged on the mounting seat, the worm wheel and the worm are mutually meshed, and the mounting seat on each set of axial feeding adjusting mechanism is fixed on the spindle box;

each spindle sleeve is arranged on the spindle box in a sliding mode through a key, a plurality of wheel grooves with equal intervals are formed in the outer surface of each spindle sleeve, a worm wheel on each set of axial feeding adjusting mechanism is matched with the wheel grooves in each spindle sleeve, and when the worm is rotated, the driving sleeve can move axially along the driving sleeve.

Compared with the prior art, the invention has the following beneficial effects:

the three main shafts are arranged, each main shaft is meshed with each other through the gear, the main shafts realize speed change through the speed-regulating driving mechanism, and each main shaft can be provided with the T-shaped milling cutter for milling the vertical lathe tool groove. When milling every group T type groove, two main shafts mill simultaneously, compare with unipolar cutter head, can improve machining efficiency, reduce the dress card number of times, reduce man-hour, reduce manufacturing cost.

Drawings

FIG. 1 is a front view of the lift truck platform of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a cross-sectional view C-C of FIG. 2;

fig. 6 is a plan-view developed view of the spindle head 1;

FIG. 7 is a cross-sectional view D-D of FIG. 4;

FIG. 8 is a front view of the mount;

FIG. 9 is a cross-sectional view F-F of FIG. 8;

fig. 10 is a front view of the spindle sleeve 4;

fig. 11 is a partial enlarged view at I of fig. 10.

Detailed Description

The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.