High-rigidity lathe bed structure of numerical control turning and milling combined machining lathe

Abstract

The utility model discloses a high-rigidity lathe bed structure of a numerical control turning and milling combined machining lathe. The high-rigidity lathe bed structure comprises a base. The lathe bed is used for improving the overall strength and stability and is of an overall box type structure, the double-mountain-shaped guide rails are arranged on the lathe bed, integrally arranged with the lathe bed and used for enhancing the overall rigidity, and the motor base and the lathe bed are integrally arranged. The lathe bed is arranged in an integral box mode, the double-mountain-shaped guide rails are integrally arranged on the lathe bed, the whole lathe bed has high strength and stability, meanwhile, the structure is compact, the double-mountain-shaped guide rails are formed by the two independent mountain-shaped guide rails, an over-positioning mode is formed, and the ultra-high rigidity characteristic is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control lathe milling compound processing lathe machine tool bed body, concretely point to a kind of high rigidity bed body structure of numerical control lathe milling compound processing lathe. BACKGROUND

[0002] In existing numerical control processing technology, bed body is an indispensable part of machine tool, which can support slide saddle and worktable to move linearly. The structural strength of machine tool bed in the market is not high, and the carrying capacity is poor, which will affect the quality and precision of workpiece.

[0003] Lead screw is an essential transmission component in machine tool, which can convert the rotary power of motor into linear power to output externally, so that the output device realizes linear motion. However, the lead screw is prone to thermal expansion and stretching during movement, which affects the positioning accuracy and service life of the lead screw. In addition, the bolts for fixing the lead screw seat, bearing seat or bearing sleeve connected with the lead screw are basically perpendicular to the lead screw during installation in the prior art. When the lead screw is subjected to thermal expansion and stretching and exerts force on the bolt, the bolt resists the force through shear force. However, this method is prone to bolt deformation, jamming and breakage. Therefore, a high-rigidity bed body structure of numerical control lathe milling compound processing lathe is proposed. SUMMARY

[0004] The utility model aims at solving the above problems and providing a high-rigidity bed body structure of numerical control lathe milling compound processing lathe.

[0005] To achieve the above purpose, the utility model provides a high-rigidity bed body structure of numerical control lathe milling compound processing lathe, which comprises a base. The bed body is in a whole box structure to improve the overall strength and stability. The double mountain guide rails are integrally arranged on the bed body to enhance the overall rigidity. The motor seat is integrally arranged with the bed body.

[0006] Further preferably, the motor, the coupling connected with the motor, the lead screw connected with the coupling and the nut seat movably installed on the lead screw are further included.

[0007] Further preferably, the bearing sleeve installed on the bed body, the bearing press cover installed on the bearing sleeve, the bearing installed between the bearing sleeve and the lead screw, and the locking nut installed on the lead screw are further included.

[0008] Further preferably, a plurality of bolts are arranged axially to fix the bearing sleeve on the bed body.

[0009] The bed body is provided with the double mountain type guide rail, and the whole bed body has high strength and stability and compact structure.

[0010] The motor base and the bed body are designed in an integrated mode, so that the overall strength is improved, the integrated processing is realized, the machining efficiency is improved, and the precision is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a structural schematic view of the utility model;

[0012] Fig. 2 is a structural schematic view of the bed body in the utility model;

[0013] Fig. 3 is a sectional structural schematic view of the bed body in the utility model.

[0014] Legend: 1, base; 2, bed body; 3, double mountain type guide rail; 4, motor base; 5, motor; 6, shaft coupling; 7, screw rod; 8, nut base; 9, bearing sleeve; 10, bearing gland; 11, bearing; 12, locking nut; 13, bolt. DETAILED DESCRIPTION

[0015] The high rigidity bed body structure of the numerical control turning and milling compound machining lathe according to the utility model will be further explained in combination with the drawings.

[0016] It should be noted that, in the embodiments of the utility model, all directionality indications such as up, down, left, right, front, back, and the like are used only to explain the relative positional relationship, movement condition, and the like between components in a certain specific posture, such as shown in the drawings, and if the specific posture changes, the directionality indications also change accordingly.

[0017] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation", and the like should be understood broadly; for example, "fixation" can be fixed connection, can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be direct connection, or can be indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0018] Reference Figs. 1-3As shown in the figure, a high-rigidity bed structure of a numerical control turning-milling combined processing lathe comprises a base 1, characterized in that it further comprises a bed 2 in a whole box structure for improving the overall strength and stability, double mountain type guide rails 3 arranged on the bed 2 and integrated with the bed 2 for enhancing the overall rigidity, and a motor base 4 integrated with the bed 2.

[0019] By adopting the whole box structure of the bed 2 and integrally arranging the double mountain type guide rails 3 on the bed 2, the whole bed 2 has high strength and stability and is compact in structure, the double mountain type guide rails 3 are formed by two independent mountain type guide rails, and the double mountain type guide rails 3 have the form of over positioning and have super high rigidity.

[0020] By adopting the integrated design of the motor base 4 and the bed 2, the overall strength is improved, the integrated machining can be performed, the machining efficiency is improved, and the precision is ensured.

[0021] In an embodiment, the motor base 4 is further provided with a motor 5, a shaft coupling 6 connected with the motor 5, a lead screw 7 connected with the shaft coupling 6, and a nut base 8 movably arranged on the lead screw 7; during transmission, the motor 5 drives the lead screw 7 to rotate, and the lead screw 7 drives the nut base 8 and the mechanism arranged on the nut base 8 to move linearly on the bed 2 through cooperation with the nut base 8 during rotation.

[0022] In an embodiment, the bed 2 is further provided with a bearing sleeve 9, a bearing gland 10 arranged on the bearing sleeve 9, a bearing 11 arranged between the bearing sleeve 9 and the lead screw 7, and a locking nut 12 arranged on the lead screw 7.

[0023] The bed 2 is further provided with a plurality of bolts 13 arranged in an axial direction and used for fixing the bearing sleeve 9 on the bed 2.

[0024] The bolts 13 are arranged in an axial direction and have the same direction as the lead screw 7, so that the axial force of the lead screw 7 due to thermal expansion is offset by the tensile resistance of the bolts 13, and the phenomenon of breakage, deformation or damage of the bolts 13 due to the axial force of the lead screw 7 exceeding the shearing resistance of the bolts 13 is avoided.

[0025] The protection scope of the utility model is not limited to the above embodiments and their transformations. The routine modifications and replacements made by the skilled in the art on the basis of the content of the embodiments all belong to the protection scope of the utility model.

Claims

1. A high-rigidity bed structure of a CNC turning-milling combined machining lathe, comprising a base (1); characterized in that The bed body (2) is in a whole box structure for improving the overall strength and stability, the double mountain type guide rails (3) are arranged on the bed body (2) and are integrally arranged with the bed body (2) for enhancing the overall rigidity, and the motor base (4) is integrally arranged with the bed body (2).

2. A high rigidity bed structure of a CNC turning-milling combined machining lathe according to claim 1, characterized in that The motor (5) is mounted on the motor base (4), the shaft coupling (6) is connected with the motor (5), the lead screw (7) is connected with the shaft coupling (6), and the nut base (8) is movably mounted on the lead screw (7).

3. A high rigidity bed structure of a CNC turning-milling combined machine tool according to claim 2, characterized in that: The bearing sleeve (9) is mounted on the bed body (2), the bearing pressing cover (10) is mounted on the bearing sleeve (9), the bearing (11) is mounted between the bearing sleeve (9) and the lead screw (7), and the locking nut (12) is mounted on the lead screw (7).

4. The high rigidity bed structure of a CNC turning-milling combined machining lathe according to claim 3, characterized in that: The plurality of bolts (13) are arranged in an axial direction for fixing the bearing sleeve (9) on the bed body (2).

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