Tool assembly for texture generation and method of formation thereof

Abstract

The present invention relates to a tool assembly (100) for texture generation on a surface of a workpiece (70). The tool assembly (100) includes a tool holder (10) with splitable portions (11’, 11’’), a rolling element (20), a precision sheet (12), and a collar (13). The splitable portions (11’, 11’’) form a cavity (16) that houses the rolling element (20) therein, for generating textured patterns on the workpiece. The precision sheet (12) creates radial clearance between the cavity (16) and the rolling element (20) for free rotation. The collar (13) secures the splitable portions (11’, 11’’) together, allowing for interchangeability of the rolling element (20) and adjustable clearance. The present invention also relates to a method (200) of forming a tool assembly (100) for texture generation on a workpiece. Reference Fig. 1A

Description

FIELD OF THE INVENTION:

[001] The present invention relates to a field of manufacturing engineering and / or production engineering. Particularly, the present invention relates to a tool assembly and a method of forming thereof. More particularly, the present invention relates to a tool assembly for texture generation on a surface of a workpiece and a method of forming thereof.BACKGROUND OF THE INVENTION:

[002] In the conventional texture generation tools, one of the primary issues encountered is the difficulty in achieving uniform and repeatable patterns on the complex surfaces. The conventional texture generating tools are often constrained by the specific geometries of the workpieces they can process, limiting their versatility and applicability. Moreover, the conventional texture generating tools used for surface texturing often require specific orientations during operation, which adds to the complexity of the setup and increases the chances of misalignment during the process. The rigidity of the texture generating tools often restricts the ability to adapt to the varying angles and contours of the workpiece surface for producing textures on curved or irregular surfaces, leading to challenges in achieving uniformity and precision in textures.

[003] Further, conventional texturing tools often rely on the movement of a rolling element to imprint a desired pattern onto a workpiece. However, achieving accurate and uniform texturing has been hindered by the difficulty in controlling the precise movement of a rolling element of the tool. Therefore, the creation of precise and consistent textures on surfaces through mechanical means remains a significant challenge. Likewise, undesirable lateral movement of the rolling element of the tool is a common issue while generating textures of the workpiece surfaces. This uncontrolled motion can result in inconsistencies in the texture depth, pattern regularity, and overall quality of the finished product. Hence, such imperfections can adversely affect the performance and aesthetic appeal of the textured surfaces. Another significant issue with traditional texture generating tools is the wear and tear of the tools. Most of the tools involve direct metal-to-metal contact between the texture generating tool and the workpiece surface, leading to increased friction, rapid tool degradation, necessitating frequent replacements and thereby increasing tool downtime and maintenance costs.

[004] Therefore, there is a need to provide a tool assembly for generating textures on surfaces of workpiece and a method of forming thereof which can overcome the drawbacks mentioned above.OBJECTIVES OF THE INVENTION:

[005] The primary objective of the present invention is to provide a tool assembly for generating textures on the surface of a workpiece.

[006] Another objective of the present invention is to provide a tool assembly for texture generation that is capable of creating a wide range of surface textures on a workpiece.

[007] Still another objective of the present invention is to provide a tool assembly with easily replaceable components, such as a rolling element which minimize downtime and reduce associated maintenance cost.

[008] Yet another objective of the present invention is to provide a texture generation tool that can improve the overall machining performance by reducing tool wear and enhancing the surface finish of the workpiece.

[009] Further objective of the present invention is to provide the tool assembly that reduce the need for specific orientations of the rolling element during operation by allowing the rolling element to move freely in all rotational degrees of freedom.SUMMARY OF THE INVENTION:

[0010] According to one aspect of the present disclosure, a tool assembly for texture generation on a surface of a workpiece is provided. The tool assembly comprises a tool holder, a rolling element, a precision sheet, and a collar. The tool holder has an opposed pair of splitable portions that includes a first portion and a second portion. The first portion has a groove forming a cavity portion therein. The rolling element is configured to be suspended within the cavity. The precision sheet is configured to be placed between the pair of portions. The collar facilitates the pair of portions to be secured together.

[0011] In accordance with the embodiments of the present invention, the rolling element has a spherical shape.

[0012] In accordance with the embodiments of the present invention, the rolling element has a plurality of profile impressions that is configured to generate textured patterns on the workpiece.

[0013] In accordance with the embodiments of the present invention, the profile impressions are formed on the entire surface of the rolling element.

[0014] In accordance with the embodiments of the present invention, two adjacent profile impressions are uniformly spaced apart in all directions.

[0015] In accordance with the embodiments of the present invention, the profile impressions are protrusions or holes.

[0016] In accordance with the embodiments of the present invention, the rolling element is configured to be interchangeably suspended within the cavity.

[0017] In accordance with the embodiments of the present invention, the cavity has a spherical or a circular shape.

[0018] In accordance with the embodiments of the present invention, the first portion has a diameter that is larger than a diameter of the second portion.

[0019] In accordance with the embodiments of the present invention, the tool holder has a cylindrical shape.

[0020] In accordance with the embodiments of the present invention, the cavity has a plurality of geometrical textures that store a lubricant to minimize a friction between the contact surfaces of the roller element and the cavity or between the contact surfaces of the roller element and the surfaces of the workpiece.

[0021] In accordance with the embodiments of the present invention, the precision sheet is configured to create a radial clearance between the cavity and the roller element to ensure free rotation of the roller element.

[0022] In accordance with the embodiments of the present invention, the radial clearance between the cavity and the roller element is being varied by adjusting the position of the collar.

[0023] According to another aspect of the present disclosure, a method of forming a tool assembly for texture generation on a workpiece is provided.

[0024] In accordance with the embodiments of the present invention, the method includes the steps of: obtaining a tool holder having an opposed pair of splitable portions, the pair of portions respectively having a first portion and a second portion, wherein the first portion has a groove forming a cavity portion therein; placing a precision sheet between the pair of portion; suspending a rolling element within the cavity; and securing the pair of portions together using a collar.

[0025] In accordance with the embodiments of the present invention, the rolling element has a spherical shape.

[0026] In accordance with the embodiments of the present invention, the rolling element has a plurality of profile impressions that is configured to generate textured patterns on the workpiece.

[0027] In accordance with the embodiments of the present invention, the profile impressions are formed on the entire surface of the rolling element.

[0028] In accordance with the embodiments of the present invention, two adjacent profile impressions are uniformly spaced apart in all directions.

[0029] In accordance with the embodiments of the present invention, the profile impressions are protrusions or holes.

[0030] In accordance with the embodiments of the present invention, the rolling element is configured to be interchangeably suspended within the cavity.

[0031] In accordance with the embodiments of the present invention, the cavity has a spherical or a circular shape.

[0032] In accordance with the embodiments of the present invention, the first portion has a diameter that is larger than a diameter of the second portion.

[0033] In accordance with the embodiments of the present invention, the tool holder has a cylindrical shape.

[0034] In accordance with the embodiments of the present invention, the cavity has a plurality of geometrical textures that store a lubricant to minimize a friction between the contact surfaces of the rolling element and the cavity or between the contact surfaces of the rolling element and the surfaces of the workpiece.

[0035] In accordance with the embodiments of the present invention, the precision sheet is configured to create a radial clearance between the cavity and the rolling element to ensure free rotation of the rolling element.

[0036] In accordance with the embodiments of the present invention, the radial clearance between the cavity and the roller element is being varied by adjusting the position of the collar.

[0037] It is therefore important that the claims be regarded as including such equivalent construction insofar as they do not depart from the spirit and scope of the tool assembly. It is also to be understood that the phraseology and terminology employed herein are for purposes of description and should not be regarded as limiting.BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS:

[0038] The detailed description is described with reference to the accompanying figures.Figure 1 illustrates A) an isometric view of a tool assembly for texture generation on a surface of a workpiece, and 1B) an alternate embodiment of the tool assembly, in accordance with the embodiments of the present invention;Figure 2 illustrates an exploded view of the tool assembly, in accordance with the embodiments of the present invention;Figure 3 illustrates A) an isometric view, B) a left side view, C) a right side view, and D) a top view of a tool holder having a splitable portion of the tool assembly, in accordance with the embodiments of the present invention;Figure 4 illustrates A) and B) an isometric views, and C) a magnified views of the rolling element of the tool assembly, in accordance with the embodiments of the present invention;Figure 5 illustrates A) an isometric view, B) a top view, and C) a side view of a precision sheet of the tool assembly, in accordance with the embodiments of the present invention;Figure 6 illustrates A) an isometric view, B) a side view, and C) a top view of a collar of the tool assembly, in accordance with the embodiments of the present invention; andFigure 7 illustrates a method of forming a tool assembly for texture generation on a workpiece, in accordance with the embodiments of the present invention.DESCRIPTION OF THE INVENTION:

[0039] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of the invention as defined by the description. It includes various specific details to assist in the understanding, but these are to be regarded as merely exemplary. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0040] The terms and words used in the following description are not limited to the bibliographical meanings but are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of the present invention is provided for illustration purposes only.

[0041] It is to be understood that the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

[0042] Referring to Figures 1 and 2 of the drawings, a tool assembly (100) for texture generation on a surface of a workpiece is provided according to the embodiments of the present invention. The tool assembly (100) is configured to generate precise and controlled texture generation on surface of a workpiece, and it can be used in conjunction with conventional machine tools such as lathe machines, milling machines, CNC machines, or any other machinery capable of holding a tool in a collet or chuck. The tool assembly (100) comprises a tool holder (10), a rolling element (20), a precision sheet (12), and a collar (13), all of which work together to facilitate the controlled and uniform generation of textures on the workpiece surface.

[0043] In accordance with the embodiments of the present invention, the tool holder (10) is configured to securely hold and align the rolling element (20) therein. The tool holder (10) is divided into opposed pair of splitable portions (11', 11''), allowing for easy insertion and removal of the rolling element (20). The splitable portions (11', 11'') are mirror-imaged insertion and removal components that can be clamped together using the collar (13), as discussed further below. Each of the splitable portions (11', 11'') is configured with a first portion (14', 14'') and a second portion (15', 15''). The first portion (14', 14'') is where a groove (16', 16'') is formed, and this groove jointly forms a cavity (16) when the two splitable portions (11', 11'') are assembled together. This cavity (16) is precisely machined to house the rolling element (20), ensuring its smooth rotation while maintaining stability. The first portion (14', 14'') of the tool holder (10) is configured to have a larger diameter than the second portion (15', 15'').

[0044] In accordance with the embodiments of the present invention, the tool holder (10) is cylindrical in shape. The tool holder (10) has the second portion (15', 15'') which is to be mounted into the collet or chuck of a machine tool. The first portion (14', 14'') of the tool holder (10) has the cavity (16) in which the rolling element (20) is suspended. The first portion (14', 14'') of the tool holder (10) has a larger diameter than the second portion (15', 15''). In an alternate embodiment, the shape of the tool holder (10) may vary depending on the specific application. While a cylindrical shape is suitable for most conventional machine tools, the tool holder (10) can also be configured with a tapered or stepped configuration to facilitate integration into specialized machines or custom setups. In another embodiment, the tool holder (10) may include one or more external features, such as grooves or ridges, to improve the grip of the tool holder (10) in the machine tool collet, thus enhancing stability during operation. Referring to Figures 3A, 3B, and 3C, one of the splitable portions (11', 11'') of the tool holder (10) of the tool assembly (100) is provided according to the embodiments of the present invention.

[0045] In accordance with the embodiments of the present invention, the tool holder (10) is fabricated from materials depending on the intended use. For high-precision or heavy-duty applications, the tool holder (10) is made from hardened steel or carbide to provide high durability and wear resistance. For lighter applications, the tool holder (10) is made from stainless steel or other materials suitable for less intensive environments.

[0046] In accordance with the embodiments of the present invention, the rolling element (20) is configured to create one or more desired textures on the surface of the workpiece. The rolling element (20) is made from materials such as carbide, ceramic, or bearing-grade steel, depending on the intended application and the properties required, such as hardness, wear resistance, and durability. In one embodiment, the rolling element (20) have a spherical shape, which allows the rolling element (20) to rotate freely in all directions when suspended in the cavity (16) of the tool holder (10). This free rotation in all degrees of freedom ensures that the rolling element (20) does not require a specific orientation during use, allowing for more flexible and efficient texture generation over the surface of the workpiece. In an alternate embodiment, the rolling element (20) have a non-spherical shape, such as an ellipsoid, conical, or even a custom geometric shape, to generate specific textures or patterns on the workpiece surface. Further, the rolling element (20), as depicted in Figures 4A, 4B, and 4C, is configured with a plurality of profile impressions (22). The profile impressions (22) are configured to create textured patterns on the workpiece surface.

[0047] In accordance with the embodiments of the present invention, the rolling element (20) is interchangeably suspended within the cavity (16) of the tool holder (10), allowing different rolling elements to be used with the same tool holder (10), thereby enabling the generation of various texture patterns without needing to replace or modify the entire tool assembly (100).

[0048] In accordance with the embodiments of the present invention, the profile impressions (22) are micro-dimples or holes that are uniformly distributed across the entire surface of the rolling element (20), enabling the generation of a consistent counter textures. These micro-dimples or holes are formed by precision machining techniques including but are not limited to a laser texturing technique and electro-discharge machining (EDM) technique. In an alternate embodiment, the profile impressions (22) are formed as raised protrusions or raised depressions, depending on the desired texture pattern to be generated on the workpiece surface. For example, in applications requiring a rough surface finish, the profile impressions (22) are in the form of sharp-edged protrusions, while for smoother finishes, rounded dimples or shallow holes are used. Further, the size, shape, and distribution of the profile impressions (22) can be customized to suit different applications. For instance, the profile impressions (22) are uniformly spaced apart in all directions, ensuring a regular and repeatable pattern on the workpiece surface. In an alternate instance, the spacing between the profile impressions (22) may vary depending on the desired texture pattern to be generated on the workpiece surface.

[0049] In accordance with the embodiments of the present invention, the rolling element (20) itself is configured with specific surface treatments or coatings to reduce friction and enhance its rotation within the cavity (16). These treatments include hard coatings like titanium nitride (TiN) or diamond-like carbon (DLC), which provide a low-friction surface and increase the rolling element's (20) wear resistance.

[0050] In accordance with the embodiments of the present invention, the precision sheet (12), as depicted in Figures 5A, 5B, and 5C, is configured to ensure precise alignment of the splitable portions (11', 11'') of the tool holder (10) and facilitates smooth rotation of the rolling element (20) within the cavity (16). The precision sheet (12) is placed between the splitable portions (11', 11'') and acts as a spacer to create a controlled radial clearance between the rolling element (20) and the inner surface of the cavity (16), ensuring the rolling element (20) has sufficient room to rotate freely without excessive friction with the cavity walls. Further, the radial clearance is varied dynamically by adjusting the position or thickness of the precision sheet (12). In one embodiment, the precision sheet (12) is placed between the first portion (14', 14'') of the splitable portions (11', 11''). In an alternate embodiment, the precision sheet (12) is placed between the second portion (15', 15'') of the splitable portions (11', 11''). Alternatively, the precision sheet (12) is placed between the first (14', 14'') and second (15', 15'') portions of the splitable portions (11', 11'').

[0051] Further, the precision sheet (12) is made from a thin, durable material such as stainless steel or brass, capable of withstanding the operating conditions of the tool assembly (100). In an alternate embodiment, the precision sheet (12) is made from materials with specific properties depending on the application. For example, in high-temperature environments, the precision sheet (12) is made from heat-resistant alloys or ceramics. In addition, the thickness of the precision sheet (12) can be varied, providing control over the radial clearance between the rolling element (20) and the cavity (16). This adjustability in clearance allows for optimization of tool performance based on the material of the workpiece or the type of texture being generated.

[0052] In accordance with the embodiments of the present invention, the collar (13), as depicted in Figures 6A, 6B, and 6C, is configured to serve as a securing mechanism that holds the splitable portions (11', 11'') of the tool holder (10) together. The collar (13) is used to hold the splitable portions 11', 11'') together, ensuring that the rolling element (20) is securely housed within the tool holder (10). The collar (13) can be adjusted throughout the second portion (15', 15'') of the splitable portions (11', 11'') by tightening or loosening the collar (13) to vary the radial clearance between the rolling element (20) and the cavity (16). This adjustability of the collar (13) allows the tool assembly (100) to be fine-tuned for specific texturing tasks, improving its versatility across different applications. In one embodiment, the collar (13) is a clamping mechanism, such as a threaded or snap-fit collar, that provides a firm hold on the splitable portions. In an alternate embodiment, the collar (13) includes additional features such as quick-release mechanisms or locking screws, enabling rapid assembly and disassembly of the tool holder (10), thereby reducing downtime and facilitating easier maintenance. Further, the collar (13) is made from a variety of materials depending on the specific application.

[0053] In accordance with the embodiments of the present invention, the cavity (16) has a spherical or circular shape, depending on the specific embodiment. A spherical cavity (16) allows the rolling element (20) to rotate with high degrees of freedom, ensuring that it can operate without requiring precise orientation. The cavity (16) includes a series of geometrical textures (17) on its inner surface. These geometrical textures (17) are configured to reduce the contact area between the rolling element (20) and the cavity (16) thereby minimizing friction and acting as reservoir for a lubricant. The lubricant stored in these textures (17) helps to ensure smooth rotation of the rolling element (20), further reducing friction and preventing wear between the contact surfaces. The geometrical texture (17) is particularly beneficial for extending the tool's operational life and maintaining consistent performance over time. Further, lubrication is introduced into the clearance space, either through a self-lubricating material used in the rolling element (20) or by applying an external lubricant during assembly or operation. This lubrication further ensures the smooth and efficient rotation of the rolling element that extends the lifespan of the tool assembly and maintains the quality of the textures to be generated on the workpiece.

[0054] Referring to Figure 1B, an alternate embodiment of the tool assembly (100) is provided according to the embodiments of the present invention.

[0055] Referring to Figure 7, in accordance with the embodiments of the present invention, a method (200) of forming a tool assembly (100) for texture generation on a workpiece is illustrated. The method (200) includes the steps of:At step 202, a tool holder (10) having an opposed pair of splitable portions (11', 11'') is obtained. The pair of portions (11', 11'') respectively has a first portion (14', 14'') and a second portion (15', 15''). The first portion (14', 14'') includes a groove (16', 16'') forming a cavity portion (16) therein.At step 204, a precision sheet (12) is placed between the pair of portions (11', 11'').At step 206, a rolling element (20) is suspended within the cavity (16).At step 208, the first portion (14', 14'') and the second portion (15', 15'') are secured together using a collar (13).

[0056] In accordance with the embodiments of the present invention, the rolling element (20) has a spherical shape.

[0057] In accordance with the embodiments of the present invention, the rolling element (20) has a plurality of profile impressions (22) configured to generate textured patterns on the workpiece.

[0058] In accordance with the embodiments of the present invention, the profile impressions (22) are formed on an entire surface of the rolling element (20).

[0059] In accordance with the embodiments of the present invention, two adjacent profile impressions (22) are uniformly spaced apart in all directions.

[0060] In accordance with the embodiments of the present invention, the profile impressions (22) are protrusions or holes.

[0061] In accordance with the embodiments of the present invention, the rolling element (20) is configured to be interchangeably suspended within the cavity (16).

[0062] In accordance with the embodiments of the present invention, the cavity (16) has a spherical or a circular shape.

[0063] In accordance with the embodiments of the present invention, the first portion (14) has a diameter that is larger than a diameter of the second portion (15).

[0064] In accordance with the embodiments of the present invention, the tool holder (10) has a cylindrical shape.

[0065] In accordance with the embodiments of the present invention, the cavity (16) has a plurality of geometrical textures (17) that store a lubricant to minimize a friction between the contact surfaces of the rolling element (20) and the cavity (16) or between the contact surfaces of the rolling element (20) and the surfaces of the workpiece.

[0066] In accordance with the embodiments of the present invention, the precision sheet (12) is configured to create a radial clearance between the cavity (16) and the rolling element (20) to ensure free rotation of the rolling element (20).

[0067] In accordance with the embodiments of the present invention, the radial clearance between the cavity (16) and the roller element (20) is being varied by adjusting the position of the collar (13).

[0068] Thus, the tool assembly (100) described herein, with its adjustable profile impressions and securement mechanisms, provides a versatile solution for generating textures on workpieces across a wide range of scales. The developed technique is not restricted to any specific size, making it applicable for producing features of varying dimensions, from macro to nanoscale, depending on the desired outcome and the material properties of the workpiece.

[0069] In an exemplary embodiment, the texturing process is achieved through a rolling motion, with the rolling element (20) pressing against the workpiece surface to form a counter surface texture corresponding to the profile impressions (22) of the roller element (20).

[0070] The tool assembly (100) creates a wide range of surface textures on workpiece surfaces. Further, tool assembly (100) of the present invention is configured with easily replaceable components, such as the tool holder (10) having a first portion (14', 14'') and a second portion (15', 15'') of a splitable portions (11', 11''), a rolling element (20), a precision sheet (12), and a collar (13), minimizing downtime and reduces associated maintenance cost. Furthermore, the tool assembly (100) improves the overall machining performance by reducing tool wear and enhances the surface finish of the workpiece. Also, the structural configuration of the tool assembly (100) allows the rolling element to move freely in all rotational degrees of freedom.

[0071] Although there has been shown and described the preferred embodiment of the present invention, it will be readily apparent to those skilled in the art that modifications may be made thereto which do not exceed the scope of the appended claims. Therefore, the scope of the invention is only to be limited by the following claims.

Claims

1. A tool assembly (100) for texture generation on a surface of a workpiece, said tool assembly (100) comprising: a tool holder (10) having an opposed pair of splitable portions (11', 11''), the pair of portions (11', 11'') respectively having a first portion (14', 14'') and a second portion (15', 15''), the first portion (14', 14'') having a groove (16', 16'') forming a cavity portion (16) therein; a rolling element (20) configured to be suspended within the cavity (16); a precision sheet (12) configured to be placed between the pair of portions (11', 11''); and a collar (13) facilitating the pair of portions (11', 11'') to be secured together.

2. The tool assembly (100) as claimed in claim 1, wherein the rolling element (20) has a spherical shape.

3. The tool assembly (100) as claimed in claim 1, wherein the rolling element (20) has a plurality of profile impressions (22) configured to generate textured patterns on the workpiece.

4. The tool assembly (100) as claimed in claims 3, wherein the profile impressions (22) are formed on an entire surface of the rolling element (20).

5. The tool assembly (100) as claimed in claim 4, wherein two adjacent profile impressions (22) are uniformly spaced apart in all directions.

6. The tool assembly (100) as claimed in claim 3, wherein the profile impressions (22) are protrusions or holes.

7. The tool assembly (100) as claimed in claim 1, wherein the rolling element (20) is configured to be interchangeably suspended within the cavity (16).

8. The tool assembly (100) as claimed in claim 1, wherein the cavity (16) has a spherical or a circular shape.

9. The tool assembly (100) as claimed in claim 1, wherein the first portion (14) has a diameter that is larger than a diameter of the second portion (15).

10. The tool assembly (100) as claimed in claim 1, wherein the tool holder (10) has a cylindrical shape.

11. The tool assembly (100) as claimed in claim 1, wherein the cavity (16) has a plurality of geometrical textures (17) that store a lubricant to minimize a friction between the contact surfaces of the roller element (20) and the cavity (16) or between the contact surfaces of the roller element (20) and the surfaces of the workpiece.

12. The tool assembly (100) as claimed in claim 1, wherein the precision sheet (12) is configured to create a radial clearance between the cavity (16) and the roller element (20) to ensure free rotation of the roller element (20).

13. The tool assembly (100) as claimed in claim 12, wherein the radial clearance between the cavity (16) and the roller element (20) is being varied by adjusting the position of the collar (13).

14. A method (200) of forming a tool assembly (100) for texture generation on a surface of a workpiece, the method (200) comprising the steps of: obtaining a tool holder (10) having an opposed pair of splitable portions (11', 11''), the pair of portions (11', 11'') respectively having a first portion (14', 14'') and a second portion (15', 15''), wherein the first portion (14', 14'') has a groove (16', 16'') forming a cavity portion (16) therein; placing a precision sheet (12) between the pair of portions (11', 11''); suspending a rolling element (20) within the cavity (16); and securing the pair of portions (11', 11'') together using a collar (13).

15. The method as claimed in claim 14, wherein the rolling element (20) has a spherical shape.

16. The method as claimed in claim 14, wherein the rolling element (20) has a plurality of profile impressions (22) configured to generate textured patterns on the workpiece.

17. The method as claimed in claim 14, wherein the profile impressions (22) are formed on an entire surface of the rolling element (20).

18. The method as claimed in claim 17, wherein two adjacent profile impressions (22) are uniformly spaced apart in all directions.

19. The method as claimed in claim 16, wherein the profile impressions (22) are protrusions or holes.

20. The method as claimed in claim 14, wherein the rolling element (20) is configured to be interchangeably suspended within the cavity (16).

21. The method as claimed in claim 14, wherein the cavity (16) has a spherical or a circular shape.

22. The method as claimed in claim 14, wherein the first portion (14) has a diameter that is larger than a diameter of the second portion (15).

23. The method as claimed in claim 14, wherein the tool holder (10) has a cylindrical shape.

24. The method as claimed in claim 14, wherein the cavity (16) has a plurality of geometrical textures (17) that store a lubricant to minimize a friction between the contact surfaces of the rolling element (20) and the cavity (16) or between the contact surfaces of the rolling element (20) and the surfaces of the workpiece.

25. The method as claimed in claim 14, wherein the precision sheet (12) is configured to create a radial clearance between the cavity (16) and the rolling element (20) to ensure free rotation of the rolling element (20).

26. The method as claimed in claim 25, wherein the radial clearance between the cavity (16) and the roller element (20) is being varied by adjusting the position of the collar (13).