Cradle assembly of numerical control machine tool

Abstract

The utility model relates to the technical field of machine tools, in particular to a numerical control machine tool cradle assembly which comprises a cradle seat, a cradle, a rotary table, a base, a first swing arm, a second swing arm, a top plate and an air pipe. The second swing arm and the top plate are hinged through a third hinge mechanism, the top plate is fixed below the rotary table, and the air pipe extends to the center of the rotary table of the cradle seat from the base along the first swing arm, the second swing arm and the top plate. According to the utility model, the rotary table is successfully and additionally provided with an additional gas utilization interface, so that a pneumatic clamp can be conveniently and additionally arranged, and the gas pipe always swings along with the two swing arms and does not run around or interfere with each other; and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to a cradle component for a numerically controlled machine tool. Background Art

[0002] Existing CNC machine tool cradles generally include a cradle seat, a cradle, and a turntable. When a pneumatic clamp is needed on the turntable, a compressed air pipeline is generally built between the cradle seat and the cradle. The two ends of the cradle are connected to the air circuit through an air slip ring. The air circuit passes through the inside of the cradle and is connected to the turntable, leaving a compressed air interface. During processing, the pneumatic clamp is connected as needed.

[0003] However, in actual applications, there is no reserved compressed air interface, or the compressed air interface may be insufficient, resulting in difficulty in using air. If a compressed air pipe is directly connected from the outside to the pneumatic fixture on the turntable, then when the cradle is tilted inward or outward, the position of the compressed air pipe cannot be controlled, which may interfere with the spindle tool and pose a safety hazard. In addition, as the cradle swings, the bending of the compressed air is also uncontrollable, and its service life is limited. Utility Model Content

[0004] The problem solved by the utility model is that in the prior art, some CNC machine tool cradles have no reserved compressed air interface or the compressed air interface may be insufficient, and a CNC machine tool cradle component is provided which can add an additional compressed air interface.

[0005] The utility model is realized through the following technical solutions: a cradle assembly for a CNC machine tool, comprising a cradle seat, a cradle, a turntable, a base, a first swing arm, a second swing arm, a top plate, and an air pipe.

[0006] The base is installed at the bottom of the cradle seat. The base can be fixedly installed with fasteners or magnetically. One end of the first swing arm and the base are hinged by a first hinge mechanism, the other end of the first swing arm and one end of the second swing arm are hinged by a second hinge mechanism, and the other end of the second swing arm and the top plate are hinged by a third hinge mechanism. The top plate is fixed under the turntable. The bottom end of the air pipe is connected to the air source of the machine tool. The air pipe extends from the base along the first swing arm, the second swing arm, and the top plate to the center of the turntable of the cradle seat. A quick connector is provided at the end of the air pipe. The rotation axes of the first hinge mechanism, the second hinge mechanism, and the third hinge mechanism all point to the intersection of the rotation axis of the cradle and the rotation axis of the turntable. The three hinge mechanisms all point to the rotation center of the cradle and the turntable. No matter how the cradle swings, the first hinge mechanism, the second hinge mechanism, and the third hinge mechanism are all on a fixed spherical surface with the intersection as the sphere center. The first swing arm and the second swing arm also swing on two spherical surfaces with different diameters without interference. As long as the second swing arm and the cradle do not interfere when the cradle swings to its lowest point, no matter how the cradle rotates, there will be no subsequent interference. The air pipe extends from the base along the first swing arm, the second swing arm, and the top plate to the center of the cradle's turntable. The end of the air pipe is equipped with a quick connector, successfully adding an additional air interface to the turntable, facilitating the installation of pneumatic clamps. The air pipe always follows the swing of the two swing arms, preventing wandering and interference, and extending the service life.

[0007] Furthermore, the air pipe is built into the first swing arm and the second swing arm, and the first hinge mechanism, the second hinge mechanism, and the third hinge mechanism use airtight rotary joints. In this solution, the air pipe is built in, and the first swing arm, the second swing arm, the first hinge mechanism, the second hinge mechanism, and the third hinge mechanism are all part of the air pipe. Although the cost of this solution may be higher, it is more practical and no wireless materials are exposed.

[0008] Furthermore, the air pipe is fixed to the sides of the first swing arm and the second swing arm through a connecting piece. The connecting piece can be a cable tie, a clamp, etc. The air pipe is provided with a length margin for rotation at the bend to ensure that the first swing arm and the second swing arm have sufficient length when they rotate relative to each other, otherwise the air pipe will easily become tight and broken.

[0009] Furthermore, the first swing arm is longer than the second swing arm, and the base does not coincide with the bottom of the symmetry center of the cradle. If the base coincides with the bottom of the symmetry center of the cradle, a dead point is likely to occur when the cradle swings to the lowest point, and the positions of the first swing arm and the second swing arm cannot be determined. If the length direction of the first swing arm and the second swing arm is perpendicular to the rotation axis of the cradle, then when the cradle swings again, it will get stuck, or damage the cradle and the first swing arm and the second swing arm will be caused.

[0010] Furthermore, the sum of the angle between the rotation axes of the first hinge mechanism and the second hinge mechanism plus the angle between the rotation axes of the second hinge mechanism and the third hinge mechanism is not less than 90°, which can ensure that the swing amplitude of the cradle can at least meet the range of ±90°.

[0011] Furthermore, the first swing arm and the second swing arm are in a broken line shape, an arc shape, or a combination of a broken line shape and an arc shape, which is determined according to the shape of the bottom of the cradle and does not interfere with each other.

[0012] The beneficial effects of the utility model are:

[0013] 1. The first hinge mechanism, the second hinge mechanism and the third hinge mechanism of the present invention are all located on a fixed spherical surface with the intersection point as the sphere center. The first swing arm and the second swing arm also swing on two spherical surfaces of different diameters without interference.

[0014] 2. The air pipe of the utility model extends from the base along the first swing arm, the second swing arm, and the top plate to the center of the turntable of the cradle seat. A quick connector is provided at the end of the air pipe, which successfully adds an additional air interface at the turntable, making it convenient to install a pneumatic clamp. The air pipe always follows the swing of the two swing arms, will not run around, will not interfere, and has a longer service life.

[0015] 3. If the base and the cradle's lower symmetry centers coincide with each other, a dead point is likely to occur when the cradle swings to the lowest point. At this time, the positions of the first swing arm and the second swing arm cannot be determined. If the length direction of the first swing arm and the second swing arm is perpendicular to the rotation axis of the cradle, then when the cradle swings again, it will get stuck, or damage will be caused to the cradle and the first swing arm and the second swing arm. The length of the first swing arm is longer than the second swing arm. In the present invention, the base and the cradle's lower symmetry centers do not coincide with each other, thereby avoiding damage to the cradle and the first swing arm and the second swing arm.

[0016] 4. The air pipe of the utility model is built into the first swing arm and the second swing arm, and the first hinge mechanism, the second hinge mechanism and the third hinge mechanism adopt airtight rotary joints. In this solution, the air pipe is built in, and the first swing arm, the second swing arm, the first hinge mechanism, the second hinge mechanism and the third hinge mechanism are all part of the air pipe, which is more practical, has no exposed wires, and is safe and reliable.

[0017] 5. The air pipe of the utility model is fixed to the sides of the first swing arm and the second swing arm through a connecting piece. The connecting piece can be a cable tie, a clamp, etc. The air pipe is provided with a length margin for rotation at the bending part to ensure that the first swing arm and the second swing arm have sufficient length when they rotate relative to each other, otherwise the air pipe will easily become tight and broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a structural diagram of the first embodiment of the present invention

[0019] Figure 2 for Figure 1 Middle partial enlarged view;

[0020] Figure 3 This is a schematic diagram of the first swing arm, the second swing arm, and the air pipe in the first embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the first swing arm, the second swing arm, and the air pipe in the second embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the first swing arm, the second swing arm, and the air pipe after the cradle is rotated 90° in Example 2 of the present utility model.

[0023] In the figure: 1 cradle seat; 2 cradle; 3 turntable; 4 base; 5 first swing arm; 6 second swing arm; 7 top plate; 8 first hinge mechanism; 9 second hinge mechanism; 10 third hinge mechanism; 11 air pipe; 12 connecting piece. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0025] Example 1, as Figure 1-3 As shown, a cradle assembly for a CNC machine tool includes a cradle seat 1, a cradle 2, a turntable 3, a base 4, a first swing arm 5, a second swing arm 6, a top plate 7, and an air pipe 11.

[0026] The base 4 is installed at the bottom of the cradle 1. The base 4 can be fixedly installed with fasteners or magnetically. One end of the first swing arm 5 and the base 4 are hinged by a first hinge mechanism 8, the other end of the first swing arm 5 and one end of the second swing arm 6 are hinged by a second hinge mechanism 9, and the other end of the second swing arm 6 and the top plate 7 are hinged by a third hinge mechanism 10. The top plate 7 is fixed below the turntable 3. The bottom end of the air pipe 11 is connected to the air source of the machine tool. The air pipe 11 extends from the base 4 along the first swing arm 5, the second swing arm 6, and the top plate 7 to the center of the turntable 3 of the cradle 1. A quick connector is provided at the end of the air pipe 11. The air pipe 11 is fixed to the side of the first swing arm 5 and the second swing arm 6 by a connecting piece 12. The connecting piece 12 can be a cable tie, a clamp, etc. The air pipe 11 is provided with a length margin for rotation at the bending part to ensure that the first swing arm 5 and the second swing arm 6 have sufficient length when they rotate relative to each other, otherwise the air pipe 11 is easily tightened and broken. The rotation axes of the first, second, and third articulated mechanisms 8, 9, and 10 all point toward the intersection of the rotation axes of the cradle 2 and the turntable 3. All three articulated mechanisms point toward the rotation centers of the cradle 2 and turntable 3. Regardless of how the cradle 2 swings, the first, second, and third articulated mechanisms 8, 9, and 10 remain on a fixed spherical surface centered at the intersection. The first and second swing arms 5, 6 also swing on spheres of different diameters, preventing interference. Furthermore, as long as the second swing arm 6 and cradle 2 do not interfere when the cradle 2 swings to its lowest point, no matter how the cradle 2 rotates, no interference will occur. The air pipe 11 extends from the base 4 along the first swing arm 5, the second swing arm 6, and the top plate 7 to the center of the turntable 3 of the cradle 1. A quick connector is provided at the end of the air pipe 11, which successfully adds an additional air interface at the turntable 3, making it convenient to install a pneumatic clamp. The air pipe 11 always swings with the two swing arms, will not run around, will not interfere, and has a longer service life.

[0027] In this solution, the first swing arm 5 is longer than the second swing arm 6, and the base 4 does not coincide with the bottom of the symmetry center of the cradle 2. If the base 4 coincides with the bottom of the symmetry center of the cradle 2, then when the cradle 2 swings to the lowest point, a dead point is likely to occur, and the positions of the first swing arm 5 and the second swing arm 6 cannot be determined. If the length direction of the first swing arm 5 and the second swing arm 6 is perpendicular to the rotation axis of the cradle 2, then when the cradle 2 swings again, it will get stuck, or cause damage to the cradle 2 and the first swing arm 5 and the second swing arm 6.

[0028] In this solution, the sum of the angle between the rotation axes of the first hinge mechanism 8 and the second hinge mechanism 9 plus the angle between the rotation axes of the second hinge mechanism 9 and the third hinge mechanism 10 is not less than 90°, which can ensure that the swing amplitude of the cradle 2 can at least meet the range of ±90°.

[0029] In this solution, the first swing arm 5 and the second swing arm 6 are in a broken line shape, an arc shape, or a combination of a broken line shape and an arc shape, depending on the shape of the bottom of the cradle 2, as long as there is no interference. In this solution, a broken line shape is adopted.

[0030] Example 2, as Figure 4 As shown, the difference from the first embodiment is that the structure of the trachea 11 is different. The trachea 11 in this solution is built into the first swing arm 5 and the second swing arm 6. The first hinge mechanism 8, the second hinge mechanism 9, and the third hinge mechanism 10 adopt an airtight rotary joint. In this solution, the trachea 11 is built in, and the first swing arm 5, the second swing arm 6, the first hinge mechanism 8, the second hinge mechanism 9, and the third hinge mechanism 10 are all a ring of the trachea 11. Although the cost of this solution may be higher, it is more practical and no wireless material is exposed. Figure 5 As shown, the cradle 2 swings 90°, and at this time the first swing arm 5 and the second swing arm 6 are also opened about 90°, but will not interfere with the cradle 2, achieving uninterrupted, safe and stable air supply.

[0031] In summary, the CNC machine tool cradle assembly described in the present invention successfully adds an additional air interface at the turntable 3, which is convenient for installing pneumatic clamps. The air pipe 11 always swings with the two swing arms, will not run around, will not interfere, and has a longer service life.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those familiar with the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit and substance of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A cradle assembly for a numerically controlled machine tool, comprising a cradle seat (1), a cradle (2), and a turntable (3), characterized in that: It also includes a base (4), a first swing arm (5), a second swing arm (6), a top plate (7), and an air pipe (11). The base (4) is installed at the bottom of the cradle seat (1), one end of the first swing arm (5) and the base (4) are hinged through a first hinge mechanism (8), the other end of the first swing arm (5) and one end of the second swing arm (6) are hinged through a second hinge mechanism (9), the other end of the second swing arm (6) and the top plate (7) are hinged through a third hinge mechanism (10), the top plate (7) is fixed below the turntable (3), the bottom end of the air pipe (11) is connected to the air source of the machine tool, the air pipe (11) extends from the base (4) along the first swing arm (5), the second swing arm (6), and the top plate (7) to the center of the turntable (3) of the cradle seat (1), and a quick connector is provided at the end of the air pipe (11), and the rotation axes of the first hinge mechanism (8), the second hinge mechanism (9), and the third hinge mechanism (10) all point to the intersection of the rotation axis of the cradle (2) and the rotation axis of the turntable (3).

2. A cradle assembly for a CNC machine tool according to claim 1, characterized in that: The air pipe (11) is built into the first swing arm (5) and the second swing arm (6); the first hinge mechanism (8), the second hinge mechanism (9), and the third hinge mechanism (10) adopt airtight rotary joints.

3. The cradle assembly for a CNC machine tool according to claim 1, characterized in that: The air pipe (11) is fixed to the sides of the first swing arm (5) and the second swing arm (6) through a connecting piece (12), and a length margin for rotation is provided at a bend of the air pipe (11).

4. A cradle assembly for a CNC machine tool according to any one of claims 1 to 3, characterized in that: The first swing arm (5) is longer than the second swing arm (6), and the base (4) does not overlap below the symmetry center of the cradle (2).

5. A cradle assembly for a CNC machine tool according to any one of claims 1 to 3, characterized in that: The sum of the angle between the rotation axes of the first hinge mechanism (8) and the second hinge mechanism (9) plus the angle between the rotation axes of the second hinge mechanism (9) and the third hinge mechanism (10) is not less than 90°.

6. A cradle assembly for a CNC machine tool according to any one of claims 1 to 3, characterized in that: The first swing arm (5) and the second swing arm (6) are in a broken line shape, an arc shape, or a combination of a broken line shape and an arc shape.

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