A numerical control lathe processing tool angle adjusting device

Abstract

The utility model relates to lathe technical field especially is concerned with a numerical control lathe processing tool angle adjusting device. The utility model provides a numerical control lathe processing tool angle adjusting device for solving the technical problem that the tool bit angle cannot be adjusted in the prior art. The utility model provides a numerical control lathe processing tool angle adjusting device, including tool rest, pre -fixed unit and angle adjusting unit, tool rest is used for providing the support basis for tool bit, pre -fixed unit links with tool rest, is used for providing the pre -tightening force for tool bit, makes tool bit rotatablely pre -fixed on tool rest, and the pivot direction of tool bit is parallel to the Y -axis direction of lathe, angle adjusting unit links with tool rest, under the state that tool bit is pre -fixed on tool rest, angle adjusting unit is used for abutting tool bit to adjust the angle of tool bit.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to a tool angle adjustment device for CNC lathe machining. Background Technology

[0002] In the field of precision machining, many parts require highly specific dimensions and geometric tolerances. For example, the inner ring of a tapered roller bearing for railway use often requires a "runaway groove" (also known as a relief groove) to be machined at the transition between the raceway and the flange. This groove is crucial for the flow of lubricant and the "cleaning" operation in subsequent grinding processes, and its shape, angle, and size directly affect the assembly and operating performance of the bearing.

[0003] Currently, these relief grooves are typically machined by machine tools. However, different bearing models have vastly different requirements for groove specifications, and existing conventional solutions all have significant drawbacks, as detailed below: Using standard cutting tools (direct procurement): often makes it difficult to meet the stringent requirements of many grooves for angles and dimensions; the fixed orientation of the cutting tool in a conventional tool holder cannot match the groove geometry.

[0004] Custom-made cutting tools: While they can guarantee precision, they are expensive; when multiple grooves need to be produced, the utilization rate of a single tool is extremely low, which leads to a significant increase in the cost of a single product, making them unsuitable for mass production.

[0005] Manually sharpening standard cutter heads: Although it can temporarily meet specific angle requirements, the tool life is short and the consistency is poor, making it unsuitable for the repeatability and efficiency requirements of mass production.

[0006] Therefore, there has long been a demand in the industry to reuse the same standard tool to achieve the machining of various grooves without using expensive custom tools. Utility Model Content

[0007] This utility model provides a CNC lathe machining tool angle adjustment device and machine tool to solve the technical problem that the cutting tool angle cannot be adjusted in the prior art.

[0008] The above-mentioned objectives of this utility model can be achieved by the following technical solutions: This utility model provides a CNC lathe machining tool angle adjustment device and machine tool, including a tool post, a pre-fixing unit, and an angle adjustment unit; the tool post is used to provide a support base for the lathe tool; the pre-fixing unit is connected to the tool post and is used to provide a preload force to the lathe tool, so that the lathe tool is rotatably pre-fixed on the tool post, and the rotation axis of the lathe tool is parallel to the Y-axis direction of the machine tool; the angle adjustment unit is connected to the tool post, and when the lathe tool is pre-fixed on the tool post, the angle adjustment unit is used to press against the lathe tool to adjust the angle of the lathe tool.

[0009] According to one embodiment of the present invention, the tool holder has a tool holder receiving cavity inside, the tool holder receiving cavity passing through the side of the tool holder facing the X-axis of the spindle (machine tool spindle); the side wall of the tool holder has a pre-fixing hole, the pre-fixing unit passes through the pre-fixing hole and communicates with the tool holder receiving cavity.

[0010] According to one embodiment of the present invention, the pre-fixing hole extends along the X-axis direction of the machine tool and is used to allow the pre-fixing unit to switch between multiple pre-fixing positions.

[0011] According to one embodiment of the present invention, when the angle adjustment unit is at a preset angle against the cutting tool, the pre-fixing unit is used to lock the cutting tool on the tool holder to rigidly fix the cutting tool at the preset angle.

[0012] According to one embodiment of the present invention, the pre-fixing unit includes a bolt and a nut; the head of the bolt is located outside the pre-fixing hole, the shank of the bolt is located in the pre-fixing hole and along the Y-axis direction of the machine tool; the nut is located inside the pre-fixing hole and is screwed to the shank of the bolt, and when the free end of the shank contacts the cutting tool, the nut abuts against the inside of the pre-fixing hole.

[0013] According to one embodiment of the present invention, the tool holder has an angle adjustment screw hole on its upper part. The angle adjustment screw hole extends along the height direction of the tool holder and communicates with the tool holder receiving cavity. The angle adjustment unit is located in the angle adjustment screw hole. The angle adjustment unit is an adjustment screw and is screwed to the hole wall of the angle adjustment screw hole for moving in a top-to-bottom direction.

[0014] According to one embodiment of the present invention, the angle adjustment screw hole is a gourd hole, which has two holes with different diameters to accommodate angle adjustment units with two nominal diameters.

[0015] According to one embodiment of the present invention, it further includes an angle scale disk located above the tool holder, the angle scale disk having a through hole at its center, and the angle adjustment unit passing through the angle scale disk and coaxially arranged with the angle scale disk.

[0016] According to one embodiment of the present invention, the tool holder has a tool support hole located below the tool holder and communicating with the tool holder cavity of the lathe tool, and extending along the height direction of the tool holder; the CNC lathe machining tool angle adjustment device further includes a tool support bolt located below the tool holder and screwed to the tool support hole, the free end of the tool support bolt being used to abut against the lower end of the tool holder of the lathe tool in a bottom-to-top direction, the pitch of the tool support bolt being greater than the pitch of the angle adjustment unit, for providing initial support for the lathe tool and coarsely adjusting its angle; the angle adjustment unit is used for finely adjusting the angle of the lathe tool.

[0017] The features and advantages of this utility model of a CNC lathe machining tool angle adjustment device are as follows: The pre-fixing unit applies a preload to the cutting tool to achieve a rotatable pre-fixed state, thus providing a basis for subsequent angle adjustment. In this state, the angle adjustment unit pushes against the cutting tool to adjust its tilt angle, enabling the cutting tool to flexibly switch to the corresponding angle under different machining requirements. It has the ability to flexibly adjust the angle and solves the technical problem that standard tools cannot adapt to various groove geometry angles due to fixed angles. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of a CNC lathe machining tool angle adjustment device of the present invention at a certain angle.

[0020] Figure 2 This is a three-dimensional schematic diagram from another angle of the CNC lathe machining tool angle adjustment device of this utility model.

[0021] Explanation of reference numerals in the attached figures: 1. Tool holder; 10. Lathe tool; 11. Lathe tool holder receiving cavity; 12. Pre-fixing hole; 13. Angle adjustment screw hole; 2. Pre-fixing unit; 3. Angle adjustment unit. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Implementation like Figures 1 to 2 As shown, this utility model provides a turning tool 10 angle adjustment device, including a tool holder 1, a pre-fixing unit 2, and an angle adjustment unit 3; the tool holder 1 is used to provide a support base for the turning tool 10; the pre-fixing unit 2 is connected to the tool holder 1 and is used to provide a pre-tightening force to the turning tool 10, so that the turning tool 10 is rotatably pre-fixed on the tool holder 1, and the rotation axis direction of the turning tool 10 is parallel to the Y-axis direction of the machine tool; the angle adjustment unit 3 is connected to the tool holder 1, and when the turning tool 10 is pre-fixed on the tool holder 1, the angle adjustment unit 3 is used to press against the turning tool 10 to adjust the angle of the turning tool 10.

[0026] In practice, the pre-fixing unit 2 applies a pre-tightening force to the cutting tool 10 to achieve a rotatable pre-fixed state, thereby providing a rotational basis for subsequent angle adjustment; in this state, the angle adjustment unit 3 presses against the cutting tool 10 to adjust its tilt angle, enabling the cutting tool 10 to flexibly switch to the corresponding angle under different processing requirements, and has the ability to flexibly adjust the angle, thus solving the technical problem that standard tools cannot adapt to various groove geometry angles due to fixed angles.

[0027] In this embodiment, the width direction of the machine tool is the Y-axis direction of the machine tool.

[0028] According to one embodiment of the present invention, the tool holder 1 has a tool holder receiving cavity 11 inside, the tool holder receiving cavity 11 passes through the side of the tool holder 1 facing the X-axis of the spindle (machine tool spindle); the side wall of the tool holder 1 has a pre-fixing hole 12, the pre-fixing unit 2 passes through the pre-fixing hole 12 and is connected to the tool holder receiving cavity 11.

[0029] In this embodiment, since the cutting tool is arranged along the X-axis direction of the machine tool, the cutting tool holder cavity 11 passes through the side of the tool holder 1 facing the X-axis of the spindle (machine tool spindle). Specifically, the cutting tool holder cavity 11 extends along the X-axis direction of the machine tool and passes through the end of the tool holder 1 near the machine tool along the X-axis direction of the machine tool.

[0030] According to one embodiment of the present invention, the pre-fixing hole 12 extends along the Y-axis direction of the machine tool and is used to allow the pre-fixing unit 2 to switch between multiple pre-fixing positions.

[0031] In practice, operators can adjust the pre-fixed position according to actual needs.

[0032] According to one embodiment of the present invention, when the angle adjustment unit 3 abuts against the cutting tool 10 to a preset angle, the pre-fixing unit 2 is used to lock the cutting tool 10 onto the tool holder 1 so as to rigidly fix the cutting tool 10 at the preset angle.

[0033] In practice, after the angle adjustment unit 3 presses the bottom of the cutting tool 10 to the preset angle, the pre-fixing unit 2 further locks the cutting tool 10, making it rigidly fixed at the angle. This operation realizes the conversion from "adjustable flexible state" to "machined rigid state", which not only retains the adjustment flexibility, but also ensures that the angle does not shift during the cutting process, thus improving the machining accuracy.

[0034] According to one embodiment of the present invention, the pre-fixing unit 2 includes a bolt and a nut; the head of the bolt is located outside the pre-fixing hole 12, the shank of the bolt is located in the pre-fixing hole 12 and along the Y-axis direction of the machine tool; the nut is located inside the pre-fixing hole 12 and is screwed to the shank of the bolt, and when the free end of the shank contacts the cutting tool 10, the nut abuts against the inside of the pre-fixing hole 12.

[0035] In specific implementation, the pre-fixing unit 2 includes a bolt and a nut. The bolt shank passes through the pre-fixing hole 12 along the Y-axis of the machine tool, and its free end contacts the cutting tool 10. The nut is located inside the hole and is screwed to the shank, and abuts against the inner wall of the pre-fixing hole 12 when locked. This structure provides a controllable pre-tightening force through the threaded pair, which can not only realize the rotatable pre-fixing of the cutting tool 10, but also reliably lock it after adjustment.

[0036] According to one embodiment of the present invention, the tool holder 1 has an angle adjustment screw hole 13 on its upper part. The angle adjustment screw hole 13 extends along the height direction of the tool holder 1 and is connected to the tool holder receiving cavity 11. The angle adjustment unit 3 is located in the angle adjustment screw hole 13. The angle adjustment unit 3 is an adjustment screw and is screwed to the hole wall of the angle adjustment screw hole 13 for moving in a top-to-bottom direction.

[0037] In specific implementation, the tool holder 1 has an angle adjustment screw hole 13 extending along the height direction and communicating with the tool holder cavity 11. The angle adjustment unit 3 is an adjustment screw screwed into the screw hole and can move in a downward direction. This vertically arranged adjustment structure adjusts the tool tip angle by pushing the upper part of the cutting tool 10. Its working principle is as follows: rotating the adjustment screw causes it to move downward, with its bottom touching the upper end of the cutting tool 10, forcing the cutting tool 10 to rotate around a pre-fixed point, thereby changing the angle of the cutting tool 10.

[0038] In this embodiment, the height direction of the tool holder 1 is the Z-axis direction of the machine tool.

[0039] According to one embodiment of the present invention, the angle adjustment screw hole 13 is a gourd hole, which has two holes with different diameters to accommodate angle adjustment units 3 with two nominal diameters.

[0040] In practical implementation, the angle adjustment screw hole 13 is a gourd-shaped hole containing two different diameters, which can be adapted to two types of nominal diameter adjustment screws. This design is compatible with different specifications of angle adjustment units 3 without replacing the tool holder 1, which enhances the versatility and on-site adaptability of the device and avoids the inability to adjust due to mismatched screw specifications.

[0041] In some embodiments, two wire threaded sleeves can be embedded in the two holes of the gourd hole, with one wire threaded sleeve embedded in each hole, for screwing the angle adjustment unit 3.

[0042] According to one embodiment of the present invention, it also includes an angle scale disk located above the tool holder 1. The center of the angle scale disk has a through hole, and the angle adjustment unit 3 passes through the angle scale disk and is coaxially arranged with the angle scale disk.

[0043] In practical implementation, an angle scale disc is installed above the tool holder 1, with a central through hole through which the angle adjustment unit 3 passes, and the two are coaxial. This structure converts the rotation stroke of the adjusting screw into a visible angle reading, realizing the quantification and repeatability of angle setting, and reducing trial cutting and debugging time. Its working principle is as follows: when the adjusting screw rotates, its position change is visually displayed through the scale on the scale disc, and the operator can accurately set the target angle according to the scale.

[0044] According to one embodiment of the present invention, the tool holder 1 has a tool support hole located below the tool holder 1 and communicating with the tool holder cavity 11, and extending along the height direction of the tool holder 1; the tool 10 angle adjustment device further includes a tool support bolt located below the tool holder 1 and screwed to the tool support hole, the free end of the tool support bolt being used to abut against the lower end of the tool holder of the tool 10 in a bottom-to-top direction, the pitch of the tool support bolt being greater than the pitch of the angle adjustment unit 3, and being used to provide initial support for the tool 10 and coarsely adjust its angle; the angle adjustment unit 3 is used to finely adjust the angle of the tool 10.

[0045] In practical implementation, a tool support hole is provided below the tool holder 1. The tool support bolt is screwed into this hole and abuts against the lower end of the tool shank of the lathe tool 10 from bottom to top. Its pitch is greater than the pitch of the angle adjustment unit 3. This structure achieves initial support and coarse angle adjustment of the lathe tool 10 through the tool support bolt, and then fine adjustment is completed by the small pitch angle adjustment unit 3, forming a two-stage adjustment mechanism that balances efficiency and accuracy. Its working principle is as follows: first, the tool shank is quickly raised to an approximate angle by the large pitch tool support bolt, and then fine adjustment is performed by the fine adjustment screw, realizing the coordinated operation of "coarse adjustment - fine adjustment".

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tool angle adjustment device for CNC lathe machining, characterized in that, It includes a tool holder (1), a pre-fixing unit (2), and an angle adjustment unit (3); The tool holder (1) is used to provide a support base for the lathe tool (10); The pre-fixing unit (2) is connected to the tool holder (1) and is used to provide pre-tightening force to the lathe tool (10) so that the lathe tool (10) is rotatably pre-fixed on the tool holder (1), and the rotation axis direction of the lathe tool (10) is parallel to the Y-axis direction of the machine tool. The angle adjustment unit (3) is connected to the tool holder (1). When the cutting tool (10) is pre-fixed on the tool holder (1), the angle adjustment unit (3) is used to press against the cutting tool (10) to adjust the angle of the cutting tool (10).

2. The CNC lathe machining tool angle adjustment device according to claim 1, characterized in that, The tool holder (1) has a tool holder receiving cavity (11) inside, and the tool holder receiving cavity (11) passes through the side of the tool holder (1) facing the X-axis of the machine tool spindle; The tool holder (1) has a pre-fixing hole (12) on its side wall. The pre-fixing unit (2) passes through the pre-fixing hole (12) and is connected to the lathe tool holder receiving cavity (11).

3. The CNC lathe machining tool angle adjustment device according to claim 2, characterized in that, The pre-fixing hole (12) extends along the X-axis of the machine tool spindle and is used to allow the pre-fixing unit (2) to switch between multiple pre-fixing positions.

4. The CNC lathe machining tool angle adjustment device according to claim 2, characterized in that, When the angle adjustment unit (3) is pressed against the cutting tool (10) at a preset angle, the pre-fixing unit (2) is used to lock the cutting tool (10) on the tool holder (1) so as to rigidly fix the cutting tool (10) at the preset angle.

5. The CNC lathe machining tool angle adjustment device according to claim 2, characterized in that, The pre-fixing unit (2) includes bolts and nuts; The head of the bolt is located outside the pre-fixed hole (12), and the shank of the bolt is located in the pre-fixed hole (12) and along the Y-axis direction of the machine tool; The nut is located inside the pre-fixed hole (12) and is screwed to the shank of the bolt. When the free end of the shank contacts the cutting tool (10), the nut abuts against the inside of the pre-fixed hole (12).

6. The CNC lathe machining tool angle adjustment device according to claim 2, characterized in that, The tool holder (1) has an angle adjustment screw hole (13) on its upper part. The angle adjustment screw hole (13) extends along the height direction of the tool holder (1) and is connected to the cutting tool holder receiving cavity (11). The angle adjustment unit (3) is located in the angle adjustment screw hole (13). The angle adjustment unit (3) is an adjustment screw and is screwed to the hole wall of the angle adjustment screw hole (13) for moving in the direction from top to bottom.

7. The CNC lathe machining tool angle adjustment device according to claim 6, characterized in that, The angle adjustment screw hole (13) is a gourd hole, which has two holes with different diameters to accommodate the angle adjustment unit (3) with two nominal diameters.

8. The CNC lathe machining tool angle adjustment device according to claim 6, characterized in that, It also includes an angle scale disk located above the tool holder (1), the center of the angle scale disk has a through hole, and the angle adjustment unit (3) passes through the angle scale disk and is coaxially arranged with the angle scale disk.

9. A CNC lathe machining tool angle adjustment device according to claim 6, characterized in that, The tool holder (1) has a tool support hole, which is located below the tool holder (1) and communicates with the lathe tool holder cavity (11), and extends along the height direction of the tool holder (1). The CNC lathe machining tool angle adjustment device also includes a tool support bolt, which is located below the tool holder (1) and screwed to the tool support hole. The free end of the tool support bolt is used to abut against the lower end of the tool shank of the lathe tool (10) in a bottom-to-top direction. The pitch of the tool support bolt is greater than the pitch of the angle adjustment unit (3) and is used to provide initial support for the lathe tool (10) and coarsely adjust its angle. The angle adjustment unit (3) is used to fine-tune the angle of the cutting tool (10).

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