Eccentric swing head

Abstract

The invention discloses an eccentric swinging head, which belongs to the technical field of swinging heads and comprises a main shaft and a swinging shaft, the main shaft is arranged on one side of the swing shaft and can swing around the swing shaft, and eccentricity is arranged between the main shaft and the swing shaft. According to the eccentric swing head disclosed by the invention, the eccentricity is set between the main shaft and the swing shaft, so that the stroke range of the main shaft can be enlarged after the main shaft swings or when the main shaft swings, and the coverage range of the main shaft is enlarged; therefore, the machining range of the machine tool can be expanded to the greatest extent under the condition that the layout size of the machine tool and the movement strokes of other equipment parts of the machine tool are not changed, and meanwhile, a certain eccentricity is arranged between the main shaft and the swing shaft, so that the distance between the main shaft and parts possibly generating interference can be increased, and the machining efficiency is improved. Therefore, the main shaft does not interfere with other parts of the machine tool in position when rotating and swinging, collision and damage between equipment parts can be effectively avoided, and smooth machining is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of swing heads, and in particular to an eccentric swing head. Background Art

[0002] The machine tool swing head refers to a component that allows the machine tool spindle to deflect a certain angle in the horizontal and vertical planes to meet special processing requirements. In a five-axis machine tool, the swing head is usually used as a part of the machine tool's rotating axis, and cooperates with the linear axis (X, Y, Z axis) to achieve complex shape processing of the workpiece in space. The structure of the swing head includes gas, electricity, hydraulic system, gear transmission mechanism or torque motor direct drive mechanism, tool spindle mechanism and other parts. The transmission mechanism is driven by the swing shaft motor to make the spindle box swing, and finally realize the swing of the tool spindle.

[0003] However, the stroke of the existing swing head structure during the swing process is often limited. In order to meet the needs of a wide range of processing, it can only be achieved by setting up larger machine tools. This will bring about the problems of large machine tool layout area and high cost. In addition, during processing, the swing head is also very likely to cause position interference with adjacent components during the swing process, resulting in a high risk of collision between the spindle and other machine tool equipment, which is not conducive to processing and production. Summary of the invention

[0004] The present invention provides an eccentric swing head to solve the above problems.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] An eccentric swing head comprises a main shaft and a swing shaft;

[0007] The main shaft is arranged at one side of the swing shaft and can swing around the swing shaft, and an eccentricity is arranged between the main shaft and the swing shaft.

[0008] Furthermore, the axis of the main shaft and the axis of the swing shaft are arranged in different planes and perpendicularly.

[0009] Furthermore, the swing shaft drives the main shaft to swing at an angle ranging from -120° to +120°.

[0010] Furthermore, the eccentricity is set in a direction that is a direction in which the main shaft is away from a side of a device adjacent to the main shaft.

[0011] The beneficial effects of the present invention are:

[0012] An eccentric swing head disclosed in the present invention can increase the stroke range of the spindle after or during the swing of the spindle by setting an eccentricity between the spindle and the swing shaft, thereby expanding the coverage range of the spindle, and thus maximizing the scope of machine tool processing when the layout size of the machine tool and the movement stroke of other equipment components of the machine tool remain unchanged, thereby reducing the layout area of ​​the machine tool and reducing the processing cost. At the same time, since a certain eccentricity is set between the spindle and the swing shaft, the distance between the spindle and components that may interfere can be increased, thereby ensuring that the spindle will not interfere with other components of the machine tool when it rotates and swings, thereby effectively avoiding collision and damage between equipment components and ensuring smooth production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of an eccentric swing head structure disclosed in an embodiment of the present invention;

[0015] Figure 2 It is a schematic diagram of the front and rear positions of an eccentric swing head structure disclosed in an embodiment of the present invention (the main axis is arranged horizontally);

[0016] Figure 3 It is a schematic diagram of the front and rear positions of an eccentric swing head structure disclosed in an embodiment of the present invention (a workbench or other equipment that may interfere with the main shaft is provided at the lower side).

[0017] In the figure: 1, main shaft; 2, swing shaft. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 The eccentric swing head provided in this embodiment is shown, comprising a main shaft 1 and a swing shaft 2;

[0020] The main shaft 1 is disposed at one side of the swing shaft 2 and is capable of swinging around the swing shaft 2 . An eccentricity is provided between the main shaft 1 and the swing shaft 2 .

[0021] An eccentric swing head disclosed in the present invention can increase the stroke range of the spindle after or during the swing of the spindle by setting an eccentricity between the spindle and the swing shaft, thereby expanding the coverage range of the spindle, thereby maximizing the scope of machine tool processing when the machine tool layout size and the movement stroke of other equipment components of the machine tool remain unchanged. At the same time, since the eccentricity is set between the spindle and the swing shaft, the distance between the spindle and components that may interfere can be increased, thereby ensuring that the spindle will not interfere with other components of the machine tool when it rotates and swings, thereby effectively avoiding collision and damage between equipment components and ensuring smooth processing.

[0022] The eccentric form disclosed in the present application can be used for a single swing head, and can also be used between the A axis and the main axis of a double swing head.

[0023] In a specific embodiment, the axis of the main shaft 1 and the axis of the swing shaft 2 are arranged perpendicularly in different planes; the different planes of the two are arranged, that is, the axis of the main shaft 1 and the axis of the swing shaft 2 are not arranged in the same plane, and an eccentricity is arranged between the main shaft 1 and the swing shaft 2, which can ensure that the stroke range of the main shaft 1 is maximized when the main shaft 1 swings during machine tool processing, improve the processing coverage range of the main shaft 1, reduce the layout size of the machine tool equipment, and improve the compactness and flexibility of the machine tool equipment. It can also ensure that when the main shaft 1 is processed at a large angle, the distance range for preventing rotation interference is increased, and the risk of interference and collision between the main shaft 1 and adjacent workbenches, protective devices and other equipment is reduced; the main shaft 1 and the swing shaft 2 are arranged perpendicularly, so that the main shaft 1 can cover a wider area when swinging, thereby further expanding the processing range.

[0024] In a specific embodiment, the swing shaft 2 drives the main shaft 1 to swing at an angle ranging from -120° to +120°; Figure 2 As shown, taking the horizontal setting of spindle 1 as an example, the eccentricity between spindle 1 and swing axis 2 is a, and when spindle 1 swings 180° around swing axis 2, the vertical displacement distance of spindle 1 is 2a, that is, when the strokes of other equipment components remain unchanged, the stroke of spindle 1 increases by 2a, which expands the area covered by spindle 1 when swinging, and finally increases the processing stroke by 2a, greatly expanding the processing range; in actual processing, the angular range of the swing of spindle 1 can be adjusted and set as needed.

[0025] In a specific embodiment, the direction in which the eccentricity is set is the direction in which the spindle 1 is away from the side of the adjacent equipment, thereby expanding the distance range between the spindle 1 and the adjacent parts that may interfere with it to avoid rotational interference, and the adjacent equipment, such as the workbench arranged on the lower side of the spindle, or the protective device arranged on the upper side of the spindle, thereby increasing the distance between the spindle and other parts of the machine tool, and minimizing the risk of interference and collision, such as Figure 3 The figure shows a schematic diagram of a workbench provided under the spindle. Since there is an eccentricity a between the spindle and the swing axis, the distance b between the spindle and the workbench is 1 Greater than the distance b between the spindle and the worktable when no eccentricity is set 0 , by setting the eccentricity a, the distance between the spindle and the worktable is increased to ensure that there is a maximum safety distance between the spindle and the worktable, effectively avoiding interference and collision between the two during processing; in practical applications, the eccentricity direction of the spindle 1 relative to the swing axis 2 and the specific value of the eccentricity can be set according to actual processing requirements to ensure that the processing range of the spindle 1 and the safety distance between the spindle 1 and the parts that may interfere with it are maximized, and the actual processing technology requirements are met.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An eccentric swing head, characterized in that: It comprises a main shaft (1) and a swing shaft (2); The main shaft (1) is arranged on one side of the swing shaft (2) and is capable of swinging around the swing shaft (2); an eccentricity is arranged between the main shaft (1) and the swing shaft (2).

2. An eccentric swing head according to claim 1, characterized in that: The axis of the main shaft (1) and the axis of the swing shaft (2) are arranged in different planes and perpendicular to each other.

3. An eccentric swing head according to claim 2, characterized in that: The swing shaft (2) drives the main shaft (1) to swing at an angle ranging from -120° to +120°.

4. The eccentric swing head according to claim 1, characterized in that: The direction in which the eccentricity is set is the direction in which the main shaft (1) is away from a side of a device adjacent to it.

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