Machine tool for machining slender shaft parts

Abstract

The utility model provides a machine tool for machining slender shaft parts, and belongs to the field of machine tools. The problem that precision errors are prone to occurring in traditional machining of long-axis parts is solved. The machine tool for machining the slender shaft parts comprises a machine tool base and a stand column, a chuck is arranged on the machine tool base, a numerical control tool turret is arranged on the side portion of the stand column, a movable truss is arranged at the front end of the stand column, a tailstock portion is arranged on the truss, the end of the movable truss extends downwards in the axial direction to be provided with a supporting plate portion, and an auxiliary device is arranged on the supporting plate portion. The auxiliary device comprises a rubber roller, a connecting piece, a rotary cylinder and a driving cylinder, a connecting support is arranged between the rotary cylinder and the driving cylinder, and the tail end of the driving cylinder is movably connected into the connecting support through a rotating shaft and is driven to rotate through a rotating cylinder. The utility model has the advantage of high precision processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of machine tools, and relates to machine tools, particularly to machine tools for processing slender shaft parts. Background Technology

[0002] With the rapid development of modern industry in my country, there is an increasing number of parts requiring long shaft machining in mechanical processing. However, with the rapid development of industry in my country, the number and types of long shafts to be machined are also increasing. Currently, many machine tools in my country face many problems in machining long shaft parts. The most common machining of long shaft parts still relies on ordinary lathes. In the traditional machine tool process, the two ends of the shaft parts are simply fixed. When the shaft parts are long, it is necessary to manually adjust the coaxiality and circular runout of the long shaft parts with dial gauges for each machining operation. Using manual adjustment often results in deviations in the machining dimensions at both ends of the long shaft parts and vibration of the lathe during the machining of long shaft parts. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a machine tool for processing slender shaft parts.

[0004] The purpose of this utility model can be achieved through the following technical solution: a machine tool for processing slender shaft parts, including a machine tool base and a column disposed on the machine tool base, wherein the machine tool base is provided with a chuck for clamping workpieces, and the side of the column is provided with an axially movable CNC turret, characterized in that an axially movable movable truss is provided at the front end of the column, and the truss is provided with a tailstock portion opposite to the chuck;

[0005] The movable truss has a support plate extending axially downward at its end.

[0006] An auxiliary device is provided on the pallet section to assist in the processing of slender shaft parts;

[0007] The auxiliary device includes a rubber roller that rolls in contact with the surface of a slender shaft-like workpiece, a connector that allows the rubber roller to be movably mounted, a rotary cylinder fixed on the support plate and used to drive the connector to rotate, and a drive cylinder that drives the connector to move axially.

[0008] The rotary cylinder and the drive cylinder are connected by a connecting bracket. The end of the drive cylinder is movably connected to the inside of the connecting bracket through a rotating shaft and is driven to rotate by the rotary cylinder.

[0009] The rotary cylinder drives the connecting bracket to rotate circumferentially, which in turn drives the drive cylinder, connecting parts and rubber rollers to achieve dynamic rolling contact with slender shaft-like parts.

[0010] In the aforementioned machine tool for processing slender shaft parts, the rotary cylinder and the drive cylinder are linked by a control module, which can provide real-time feedback on changes in the workpiece diameter and synchronously adjust the rotation angle and axial thrust.

[0011] In the aforementioned machine tool for processing slender shaft parts, the connecting member has an L-shaped structure, with a connecting shaft extending through its short side end. A bearing and a rubber roller are sequentially mounted on the connecting shaft, wherein the bearing is interference-fitted between the inner hole of the rubber roller and the outer surface of the connecting shaft.

[0012] In the aforementioned machine tool for processing slender shaft parts, the two ends of the connecting shaft are provided with a double nut locking mechanism. This double nut locking mechanism is composed of two locking nuts that are screwed in opposite directions, and is used to restrict the axial movement of the rubber roller.

[0013] Compared with existing technologies, this machine tool for machining slender shaft parts has the following advantages:

[0014] 1. By dynamically conforming to the workpiece with rubber rollers, bending deformation and vibration during the machining of slender shafts are effectively reduced, significantly improving machining accuracy and surface finish, and suppressing vibration and deformation;

[0015] 2. The L-shaped connector and double nut locking mechanism ensure that the roller is installed firmly and avoid axial movement. The linkage design of the rotary cylinder and the drive cylinder reduces mechanical interference and extends the service life of key components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a machine tool for processing slender shaft parts.

[0017] Figure 2 This is a three-dimensional schematic diagram of the auxiliary device of the machine tool for processing slender shaft parts.

[0018] In the diagram, 1 is the machine tool base; 2 is the column; 3 is the chuck; 4 is the moving truss; 5 is the tailstock; 6 is the pallet; 7 is the rubber roller; 8 is the connector; 9 is the rotary cylinder; 10 is the drive cylinder; 11 is the connecting bracket; and 12 is the connecting shaft. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1 , Figure 2As shown, this machine tool for machining slender shaft parts includes a machine base 1 and a column 2 mounted on the machine base 1. The machine base 1 is equipped with a chuck 3 for clamping workpieces. The column 2 has an axially movable CNC turret on its side. An axially movable movable truss 4 is located at the front end of the column 2. The truss has a tailstock 5 opposite to the chuck 3. A support plate 6 extends axially downward from the end of the movable truss 4. An auxiliary device for assisting in the machining of slender shaft parts is located on the support plate 6. The auxiliary device includes rubber rollers 7 that roll in contact with the surface of the slender shaft workpiece. The system includes a connector 8 for movably mounting the rubber roller 7, a rotary cylinder 9 fixed to the support plate 6 for driving the connector 8 to rotate, and a drive cylinder 10 for driving the connector 8 to move axially. A connecting bracket 11 connects the rotary cylinder 9 and the drive cylinder 10. The end of the drive cylinder 10 is movably connected to the inside of the connecting bracket 11 via a rotating shaft and is driven to rotate by the rotary cylinder. The rotary cylinder 9 drives the connecting bracket 11 to rotate circumferentially, simultaneously driving the drive cylinder 10, the connector 8, and the rubber roller 7 to achieve dynamic rolling contact with the slender shaft-like parts. By dynamically contacting the workpiece with the rubber roller 7, bending deformation and vibration during the machining of slender shafts are effectively reduced, significantly improving machining accuracy and surface finish, and suppressing vibration and deformation.

[0021] The rotary cylinder 9 and the drive cylinder 10 are linked by a control module, which can provide real-time feedback on changes in the workpiece diameter and synchronously adjust the rotation angle and axial thrust. The connecting part 8 has an L-shaped structure, with a connecting shaft 12 running through its short end. Bearings and rubber rollers 7 are sequentially mounted on the connecting shaft 12. The bearings are interference-fitted between the inner hole of the rubber roller 7 and the outer surface of the connecting shaft 12. Both ends of the connecting shaft 12 are equipped with a double-nut locking mechanism, consisting of two locking nuts screwed in opposite directions, used to restrict the axial movement of the rubber roller 7. The L-shaped connecting part 8 and the double-nut locking mechanism ensure stable roller installation and prevent axial movement. The linkage design between the rotary cylinder 9 and the drive cylinder 10 reduces mechanical interference and extends the lifespan of key components.

[0022] The rubber roller 7 in the auxiliary device is in close contact with the surface of the slender shaft workpiece. A rotary cylinder 9 drives the connecting bracket 11 to rotate circumferentially, synchronously adjusting the roller angle. A drive cylinder 10 controls the axial thrust, allowing the roller to dynamically adjust its position according to changes in the workpiece diameter, continuously providing radial support. The linkage control module monitors changes in the workpiece diameter in real time and synchronously adjusts the angle of the rotary cylinder 9 and the axial thrust of the drive cylinder 10 through feedback signals, ensuring that the roller always contacts the workpiece with optimal contact force and angle. Its L-shaped connector 8 cooperates with a double-nut locking mechanism, using an interference-fit bearing to reduce friction and limit the axial displacement of the rubber roller 7, preventing roller misalignment due to vibration during processing.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0024] Although this document uses a lot of technical terms, the possibility of using other terms is not excluded. These terms are used merely to facilitate the description and explanation of the essence of this invention; interpreting them as any kind of additional limitation would contradict the spirit of this invention.

Claims

1. A machine tool for machining slender shaft parts, comprising a machine tool base (1) and a column (2) disposed on the machine tool base (1), wherein the machine tool base (1) is provided with a chuck (3) for clamping workpieces, and the column (2) is provided with an axially movable CNC turret on its side, characterized in that, A movable truss (4) that can move axially is provided at the front end of the column (2), and a tail seat (5) opposite to the chuck (3) is provided on the truss. The movable truss (4) has a support plate (6) extending axially downward at its end. An auxiliary device is provided on the pallet section (6) to assist in the processing of slender shaft parts; The auxiliary device includes a rubber roller (7) that rolls in contact with the surface of a slender shaft-like workpiece, a connector (8) that allows the rubber roller (7) to be movably mounted, a rotary cylinder (9) that is fixed on the pallet (6) and used to drive the connector (8) to rotate, and a drive cylinder (10) that drives the connector (8) to move axially. The rotary cylinder (9) and the drive cylinder (10) are connected by a connecting bracket (11). The end of the drive cylinder (10) is movably connected to the inside of the connecting bracket (11) through a rotating shaft, and is driven to rotate by the rotary cylinder. The rotary cylinder (9) drives the connecting bracket (11) to rotate circumferentially, and simultaneously drives the driving cylinder (10), the connecting piece (8) and the rubber roller (7) to achieve dynamic rolling contact with the slender shaft-like parts.

2. The machine tool for machining elongated shaft-like parts according to claim 1, characterized in that, The rotary cylinder (9) and the drive cylinder (10) are linked control modules, which can provide real-time feedback on changes in workpiece diameter and synchronously adjust the rotation angle and axial thrust.

3. The machine tool for machining elongated shaft-like parts according to claim 1, characterized in that, The connector (8) has an L-shaped structure, and a connecting shaft (12) is provided through its short side end. A bearing and a rubber roller (7) are sequentially assembled on the connecting shaft (12), wherein the bearing is interference-fitted between the inner hole of the rubber roller (7) and the outer surface of the connecting shaft (12).

4. The machine tool for machining elongated shaft-like parts according to claim 3, characterized in that, The two ends of the connecting shaft (12) are provided with a double nut locking mechanism, which is composed of two locking nuts that are screwed in opposite directions, and is used to restrict the axial movement of the rubber roller (7).

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