Lathe bed structure of large precision turning and milling combined machining center

Abstract

The utility model discloses a lathe bed structure of a large precise turning and milling combined machining center, which belongs to the technical field of machining equipment and comprises a lathe bed body, the section of the lathe bed body is of a right-angle pentagonal structure, the top of the lathe bed body is provided with a plane portion, one side of the plane portion is provided with an inclined portion, and a supporting structure is arranged in the lathe bed body. The supporting structure comprises a first cavity formed in the length direction of the lathe bed body and second cavities distributed in a matrix mode. Operation precision and stability of all parts of the machine tool and thermal stability of the machine tool under high-speed cutting are effectively guaranteed, and machining precision of the machine tool can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining equipment, especially relates to a bed structure of large -scale precision turning -milling combined machining center. BACKGROUND

[0002] With the development of machine tool industry, the demand of high-precision composite machining performance of high-grade CNC machine tools in various industries is more and more strong, and the market demand of precision turning-milling combined machining center with turning and milling functions increases year by year. The new bed structure meeting the high-precision turning-milling machining is a very important part in the precision turning-milling combined machining center, and the structure and performance directly affect the turning-milling machining precision and efficiency of the machine tool, and then affect the overall performance of the precision turning-milling combined machining center. The existing large bed structure often has insufficient thermal stability, which is not conducive to the machining precision of the machine tool. Therefore, we propose a bed structure of large-scale precision turning-milling combined machining center. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a bed structure of large-scale precision turning-milling combined machining center, and aims at solving the problems in the prior art in the background.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0005] A bed structure of large-scale precision turning-milling combined machining center, comprising a bed body, the cross section of the bed body is a right trapezoidal structure, the top of the bed body has a flat part, one side of the flat part has an inclined part, a support structure is arranged in the bed body, the support structure comprises a first cavity arranged along the length direction of the bed body, and a second cavity arranged in a matrix.

[0006] Further, the cross section of the first cavity is a right trapezoidal structure, the first cavity has adjacent inclined side walls and horizontal side walls, the inclined side walls are parallel and spaced apart from the inclined part, and the horizontal side walls are parallel and spaced apart from the flat part.

[0007] Further, the flat part is arranged along the length direction of the bed body.

[0008] Further, the two groups of linear rails are arranged in parallel and spaced apart from each other, and a grating ruler support is arranged between the two groups of linear rails.

[0009] Further, the inclined part is arranged along the length direction of the bed body and spaced apart from each other.

[0010] Further, the low side of the mountain-shaped rail is provided with a feeding rack, and the feeding rack is arranged along the length direction of the bed body.

[0011] Further, the angle between the inclined part and the horizontal plane is 45 degrees.

[0012] Further, the bed body and the first cavity have the same cross-sectional structure, and both adopt a right-angled trapezoidal structure.

[0013] Compared with the defects and deficiencies of the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a bed body structure of large -scale precision turning -milling composite machining center, bed body body adopts right angle pentagonal structure, inside support structure adopts second cavity matrix, is equipped with first cavity of right angle trapezoidal structure simultaneously, forms multiple matrix interlaced rectangular rib structure, has stable support performance, has good thermal stability simultaneously, plane department arranges wire rail, one mountain one flat two quenched hard rail of inclined portion arranges, satisfies turning -milling unit Z -direction servo feed and tailstock, hydraulic center frame servo feed function respectively, this bed body structure effectively guarantees the operation accuracy and stability of each part of machine tool and the thermal stability of machine tool under high -speed cutting, is favorable to the promotion of the machining precision of machine tool. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of bed body body in the utility model.

[0016] Figure 2 It is the cross -sectional structure schematic diagram of bed body body A -A place in the utility model.

[0017] In the drawing: 1, bed body body;11, plane department;12, inclined portion;2, support structure;21, first cavity;211, horizontal side wall;212, inclined side wall;22, second cavity;3, wire rail;4, grating ruler support;5, mountain rail;6, flat rail;7, feed rack. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawing and example, and the utility model is further detailedly explained.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] Refer to Figure 1 And Figure 2 A bed body structure of large -scale precision turning -milling composite machining center, including bed body body 1, bed body body 1 as multi -spindle precision turning -milling composite type machine tool support matrix, bed body body 1 cross -sectional structure presents right angle pentagonal structure, bed body body 1 has adjacent plane department 11 and inclined portion 12, plane department 11 and inclined portion 12 are located between the vertical side wall of the length direction both sides of bed body body 1, plane department 11 is located at the top of bed body body 1, bed body body 1 is equipped with support structure 2 in, support structure 2 guarantees that bed body body 1 has stable support ability, and has good thermal stability.

[0020] The support structure 2 adopts a multi-matrix staggered rectangular rib structure. Specifically, the support structure 2 includes a first cavity 21 and a second cavity 22. The first cavity 21 has a right-angled pentagonal cross-section and extends and penetrates along the length of the bed body 1. The right-angled trapezoidal first cavity 21 has an inclined sidewall 212, which is parallel and spaced from the inclined portion 12 of the bed body 1. The top of the first cavity 21 is a horizontal sidewall 211, and the inclined sidewall 212 is located on one side of the horizontal sidewall 211. The horizontal sidewall 211 of the first cavity 21 is parallel to the inclined portion 12 of the bed body 1. The planar portions 11 are parallel and spaced apart; the second cavities 22 have a rectangular structure. Multiple second cavities 22 are arrayed along a cross-section perpendicular to the length of the bed body 1. These arrayed second cavities 22 are evenly distributed in multiple groups along the length of the bed body 1 to form a matrix of second cavities 22. Adjacent second cavities 22 are connected. A first cavity 21 passes through the matrix of second cavities 22, located at the intersection of the arrayed second cavities 22. For example, in a grid structure of four second cavities 22, the first cavity 21 passes through the intersection of the centers of the four second cavities 22. According to the mechanical cavity stress structure analysis, a square is the most thermally stable mechanical structure. The arrangement of the first cavities 21 and the second cavities 22 helps to improve the thermal stability of the bed body 1.

[0021] The first cavity 21 has the same cross-sectional structure as the bed body 1, preferably both adopting a right-angled trapezoidal structure.

[0022] Linear guides 3 are provided on the flat part 11 of the bed body 1. Two sets of linear guides 3 are arranged at intervals. The linear guides 3 are arranged along the length direction of the bed body 1. The linear guides 3 are used to support the high-precision servo feed of the milling and turning unit in the Z direction (i.e., the length direction of the bed body 1).

[0023] A longitudinal grating ruler bracket 4 is set between the two sets of linear guides 3. The longitudinal grating ruler bracket 4 is used to install the longitudinal grating to achieve full closed-loop accuracy detection and compensation in the Z direction (i.e., the length direction of the bed body 1).

[0024] The inclined part 12 has an angle of 45° with the horizontal plane. The inclined part 12 is provided with two sets of slide rails at intervals. The slide rails are arranged along the length of the bed body 1. The two sets of slide rails are two hardened rails, one mountain-shaped and one flat. The mountain-shaped rail 5 and the flat rail 6 are used to support the tailstock and hydraulic center frame of the machine tool.

[0025] A feed rack 7 is installed on the lower side of the mountain-shaped rail 5. The feed rack 7 is arranged along the length of the bed body 1. The output gear of the feed reduction structure installed on the tailstock lower body and the hydraulic center frame can mesh with the feed rack 7 to realize the automatic feed of the machine tool tailstock and hydraulic center frame.

[0026] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bed structure of a large precision turning-milling combined machining center, characterized in that, Including bed body body (1), the profile of bed body body (1) is right angle pentagonal structure, the top of bed body body (1) has flat portion (11), one side of flat portion (11) has inclined portion (12), the inside of bed body body (1) is equipped with support structure (2), support structure (2) includes the first cavity (21) being arranged along the length direction of bed body body (1), and the second cavity (22) being arranged in matrix.

2. The bed structure of the large precision turning and milling combined machining center according to claim 1, wherein, The profile of first cavity (21) is right angle pentagonal structure, first cavity (21) has adjacent inclined side wall (212) and horizontal side wall (211), the inclined side wall (212) is parallel and spaced with inclined portion (12), the horizontal side wall (211) is parallel and spaced with flat portion (11).

3. The bed structure of the large precision turning and milling combined machining center according to claim 1, wherein, Flat portion (11) is arranged linear rail (3) along the length direction of bed body body (1).

4. The bed structure of the large precision turning and milling combined machining center according to claim 3, characterized in that, Linear rail (3) is arranged in two groups with interval, and grating ruler support (4) is arranged between two groups of linear rail (3).

5. The bed structure of the large precision turning and milling combined machining center according to claim 1, wherein, Inclined portion (12) is arranged mountain-shaped rail (5) and flat rail (6) with interval along the length direction of bed body body (1).

6. The bed structure of the large precision turning and milling combined machining center according to claim 5, characterized in that, The low side of mountain-shaped rail (5) is provided with feeding rack (7), and feeding rack (7) is arranged along the length direction of bed body body (1).

7. The bed structure of the large precision turning and milling combined machining center according to claim 1, wherein, The included angle between inclined portion (12) and horizontal plane is 45 °.

8. The bed structure of the large precision turning and milling combined machining center according to claim 2, characterized in that, The profile structure of bed body body (1) and first cavity (21) is same, and right angle trapezoidal structure is adopted.

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