A method for repairing a cutting tool component
By removing the damaged parts and additively manufacturing the replacement parts in an additive manufacturing machine, the high cost and environmental impact caused by the damage of cutting tool components are solved, achieving a cost-effective and environmentally friendly repair effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SECO TOOLS AB
- Filing Date
- 2025-11-11
- Publication Date
- 2026-05-29
AI Technical Summary
Damage to cutting tool components results in high replacement costs and significant environmental impact, and existing technologies are insufficient for effective repair.
By removing the damaged portion and additively manufacturing a replacement portion in an additive manufacturing apparatus, ensuring that the outer boundary of the junction is aligned with the second outer boundary, an intermediate part is formed to repair the cutting tool component.
It reduces the cost of damage to cutting tool components and the environmental impact, and extends the tool life.
Smart Images
Figure CN122099735A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a method for repairing cutting tool components. Background Technology
[0002] In the cutting industry, cutting tool components are used to cut workpieces according to a predetermined cutting program. This program is designed to reduce the risk of damage to the cutting tool components. Nevertheless, damage to cutting tool components remains a common problem in the cutting industry. Depending on the extent of the damage, the cutting tool component may need to be replaced with a new one. Depending on the type of component, this can increase costs for the user. Furthermore, requiring new cutting tool components increases the user's environmental impact. Summary of the Invention
[0003] One object of the present invention is to overcome, or at least partially overcome, the aforementioned problems by introducing a method for repairing cutting tool components.
[0004] The objective of this invention is achieved through a method for repairing cutting tool components with damaged portions, the method comprising the following steps: - Remove the damaged parts, among which The steps to remove the damaged parts include: - Machining a cutting tool component into an intermediate component having machined surfaces, wherein the machined surfaces include: - A construction surface with a predetermined geometry; and - A transition surface surrounding the constructed surface; and wherein The processed surface has a first outer boundary, and the constructed surface has a second outer boundary of a predetermined shape, wherein the second outer boundary is arranged in a plane P, and wherein, when viewed perpendicularly to the plane P toward the constructed surface, the second outer boundary is completely located within the first outer boundary, and wherein... The transition surface extends from the second outer boundary to the first outer boundary, and wherein When viewed in a cross-sectional plane perpendicular to plane P, the transition surface is arranged at an opposite angle to the building surface, and wherein... The method further includes the following steps: - Place the intermediate component in the additive manufacturing equipment; - Determine the position and orientation of the second outer boundary; and - Additively manufacture a replacement portion on a build surface, wherein the replacement portion includes an interface surface arranged to contact the build surface, wherein the interface surface has an interface outer boundary, wherein the interface outer boundary is the same as the second outer boundary, and wherein the interface outer boundary is aligned with the second outer boundary.
[0005] Compared to replacing cutting tool components with new ones, removing damaged parts and replacing them with additively manufactured parts reduces the cost and environmental impact of cutting tool component damage.
[0006] Machining a cutting tool component into an intermediate part can include one or more machining steps. Machining the cutting tool component can include any suitable machining operation known in the art, such as sawing, shearing, milling, grinding, or electrical discharge machining (EDM). Machining of the transition surface is preferably accomplished by a milling operation.
[0007] Additive manufacturing of parts on a prefabricated base device is often referred to as hybrid manufacturing. When manufacturing hybrid parts, it is crucial to obtain accurate information about the location and orientation of the base device in order to place the part correctly on it.
[0008] By machining the transition surface surrounding the build surface, the steps of determining the location and orientation of the second outer boundary are facilitated, since the second outer boundary has a known predetermined shape. Without the transition surface, the actual shape of the build surface is difficult to know due to potential deformation within the cutting tool components caused by their use.
[0009] The transition surface can be, for example, a rounded surface, a chamfer, a bevel, a convex fillet, a concave fillet, any other surface, or a combination of these structures.
[0010] Additive manufacturing equipment can be any type of suitable additive manufacturing equipment known in the art.
[0011] The steps of determining the location and orientation of the second outer boundary are accomplished by any suitable method known in the art, such as scanning the machined surface with a light source, performing image analysis on the machined surface, or scanning the measurement surface with a measuring probe.
[0012] The step of replacing the part by additive manufacturing is carried out by any suitable additive manufacturing method known in the art, such as powder bed melting, binder spraying or direct energy deposition.
[0013] The replacement part is preferably additively manufactured based on a computer-aided design (CAD) model of the replacement part. The replacement part can have any suitable shape. It can be an exact replica of the corresponding part on the original cutting tool component, or it can be an adjusted or updated design of the corresponding part on the original cutting tool component.
[0014] Aligning the outer boundary of the boundary with the second outer boundary should be understood as meaning that the outer boundary of the boundary and the second outer boundary have the same orientation in space.
[0015] According to one embodiment, the step of additively manufacturing a replacement portion on a building surface includes aligning a CAD model of the replacement portion with the building surface.
[0016] The cutting tool component is preferably constructed for use in metal cutting operations.
[0017] According to one embodiment, when viewed in any cross-sectional plane perpendicular to plane P, the transition surface is arranged at an opposite angle to the building surface.
[0018] According to one embodiment, the converse angle has a constant value in the circumferential direction of the second outer boundary.
[0019] According to one embodiment, the second outer boundary includes a plurality of boundary segments, wherein at least two of these boundary segments are straight segments.
[0020] By setting at least two straight segments, the steps for determining the location and orientation of the second outer boundary are further facilitated.
[0021] According to one embodiment, the straight segments are parallel to each other.
[0022] By arranging the straight segments parallel to each other, the steps of determining the location and orientation of the second outer boundary are further facilitated.
[0023] According to one embodiment, the surface is constructed as a planar surface.
[0024] Arranging the build surface as a planar surface further facilitates the additive manufacturing of replacement parts on the build surface. Of course, the planar build surface may have surface roughness due to machining operations.
[0025] According to one embodiment, the cutting tool component includes an outer peripheral surface, and wherein a first outer boundary is located at the junction of the machined surface and the outer peripheral surface.
[0026] According to one embodiment, the cutting tool component is a tool holder, which includes a cutting element interface for carrying cutting elements.
[0027] The tool holder is preferably a steel component.
[0028] The cutting element is preferably a cutting element constructed for performing metal cutting operations. The cutting element can be, for example, a cutting insert, a drill bit, or an end mill.
[0029] According to one embodiment, the method further includes the following steps:
[0030] - Clean the building surface.
[0031] Cleaning the build surface further facilitates the steps of determining the location and orientation of the second outer boundary and the steps of additively manufacturing the replacement portion on the build surface, as it removes any possible residues from previous processing operations.
[0032] Cleaning the surface of a building can include steps such as water blasting or sand blasting.
[0033] According to one embodiment, the method further includes the following steps:
[0034] - Perform post-manufacturing operations on the replacement part.
[0035] By performing post-manufacturing operations on the replacement part, the final shape of the replacement part can be fine-tuned.
[0036] According to one embodiment, post-manufacturing operations include the step of processing at least one surface on the replacement portion.
[0037] According to one embodiment, post-manufacturing operations include the step of machining the interface of the cutting element on the replacement portion.
[0038] Post-manufacturing operations may involve, for example, milling, grinding, drilling, tapping, turning, or coating operations. According to one embodiment, post-manufacturing operations include heat treatment.
[0039] According to one embodiment, post-manufacturing operations are performed outside of the additive manufacturing equipment. Attached Figure Description
[0040] Figure 1 A flowchart of a method for repairing a cutting tool component according to an embodiment of the present invention is shown.
[0041] Figure 2 A perspective view of a cutting tool component according to one embodiment is shown schematically.
[0042] Figure 3 A perspective view of an intermediate component according to one embodiment is shown schematically.
[0043] Figure 4 schematically shown Figure 3 A magnified view of details in D1.
[0044] Figure 5 schematically shown Figure 3 A top view of the middle component shown.
[0045] Figure 6 Schematic illustration along Figure 5 The cross-sectional view of the intermediate component shown is taken by the VV line.
[0046] Figure 7 schematically shown Figure 6 A magnified view of details in D2.
[0047] Figure 8 The arrangement is schematically shown in Figure 3 A perspective view of the replacement portion on top of the intermediate component according to one embodiment. Detailed Implementation
[0048] The disclosed embodiments will now be described more fully below with reference to the accompanying drawings, in which certain embodiments of the invention are illustrated. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example only, so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The same reference numerals always refer to the same elements. Elements shown in the drawings are not necessarily drawn to scale. Some elements may be enlarged for clarity.
[0049] Figure 1 A flowchart of a method (100) for repairing a cutting tool component (200) with a damaged portion (202) is shown, see [link to flowchart]. Figure 2 The method (100) includes the following steps: - Remove (102) the damaged portion (202), where The steps for removing (102) the damaged portion (202) include: - The cutting tool component (200) is machined (104) into an intermediate component (210) including the machined surface (212), see [reference]. Figure 3 The machined surface (212) includes: - A construction surface (214) with a predetermined geometry, see Figure 4 ;as well as - The transition surface (216) surrounding the building surface (214), see [link] Figure 4 .
[0050] The method (100) further includes the following steps: - Clean (106) the surface (214). - Place the intermediate component (210) (108) in the additive manufacturing equipment; - Determine the location and orientation of the second outer boundary (220) (110); - Additively manufacture (112) the replacement portion (240) on the building surface (214); and - Perform (114) post-manufacturing operations on the replacement part (240).
[0051] Figure 2 A perspective view of a cutting tool component (200) according to one embodiment, including a damaged portion (202), is schematically shown. The cutting tool component (200) is a tool holder and includes a cutting element interface (206) configured to carry cutting elements. The cutting tool component (200) includes an outer peripheral surface (204). The cutting tool component (200) includes internal coolant channels.
[0052] Figure 3 A perspective view of an intermediate component (210) according to one embodiment is shown schematically. The intermediate component (210) includes a machined surface (212).
[0053] Figure 4 schematically shown Figure 3 A magnified view of detail D1. The machined surface (212) includes a building surface (214) having a predetermined geometry and a transition surface (216) surrounding the building surface (214). The machined surface (212) has a first outer boundary (218), and the building surface (214) has a second outer boundary (220) of a predetermined shape.
[0054] Figure 5 A top view of the intermediate component (210) is schematically shown. The second outer boundary (220) includes multiple boundary segments (222, 224, 226, 228, 230, 232, 234, 236). The second outer boundary (220) is entirely within the first outer boundary (218).
[0055] Figure 6 Schematic illustration along Figure 5 The cross-sectional view of the intermediate component (210) shown is taken by the VV line. The construction surface (214) is a planar surface. The second outer boundary (220) is arranged in plane P.
[0056] Figure 7 schematically shown Figure 6 A magnified view of detail D2. The transition surface (216) extends from the second outer boundary (220) to the first outer boundary (218). The first outer boundary (218) is located at the junction between the machined surface (212) and the outer peripheral surface (204). The transition surface (216) is arranged at an opposite angle to the building surface (214). The transition surface (216) is a rounded surface.
[0057] Figure 8A perspective view of a replacement portion (240) according to one embodiment, arranged on top of an intermediate component (210), is schematically shown. The replacement portion (240) is additively manufactured on a build surface (214). The replacement portion (240) includes an interface surface (242) arranged to contact the build surface (214). The interface surface (242) has an outer boundary (244). The outer boundary (244) is identical to a second outer boundary (220), and the outer boundary (242) is aligned with the second outer boundary (220). The replacement portion (240) includes internal coolant channels.
[0058] While the above description contains various specificities, these should not be construed as limiting the scope of the concepts described herein, but merely as illustrations of some exemplary embodiments of the concepts described herein. It should be understood that the scope of the concepts described herein fully encompasses other embodiments that will be obvious to those skilled in the art, and therefore, the scope of the concepts described herein is not limited. Unless expressly stated otherwise, reference to an element in the singular is not intended to mean "one and only one," but rather "one or more." All structural and functional equivalents of the elements of the above embodiments known to those skilled in the art are expressly incorporated herein by reference and are intended to be covered herein. In the exemplary drawings, dashed lines generally indicate features within the dashed lines that are optional.
Claims
1. A method (100) for repairing a cutting tool component (200) including a damaged portion (202), the method (100) comprising the following steps: - Remove the damaged portion (202) described in (102), wherein The step of removing (102) the damaged portion (202) includes the following steps: - The cutting tool component (200) is machined (104) into an intermediate component (210) including a machined surface (212), wherein the machined surface (212) includes: - A construction surface (214) with a predetermined geometry; and - A transition surface (216) surrounding the constructed surface (214); and wherein The processed surface (212) has a first outer boundary (218), and the building surface (214) has a second outer boundary (220) of a predetermined shape, wherein the second outer boundary (220) is arranged in a plane P, and wherein, when viewed perpendicularly to the plane P toward the building surface (214), the second outer boundary (220) is completely located within the first outer boundary (218), and wherein The transition surface (216) extends from the second outer boundary (220) to the first outer boundary (218), and wherein When viewed in a cross-sectional plane perpendicular to the plane P, the transition surface (216) is arranged at an opposite angle to the building surface (214), and wherein The method (100) further includes the following steps: - Place the intermediate component (210) (108) in the additive manufacturing equipment; - Determine (110) the position and orientation of the second outer boundary (220); and - Additively manufacture (112) a replacement portion (240) on the building surface (214), wherein the replacement portion (240) includes an interface surface (242) arranged to contact the building surface (214), wherein the interface surface (242) has an interface outer boundary (244), wherein the interface outer boundary (244) is the same as the second outer boundary (220), and wherein the interface outer boundary (242) is aligned with the second outer boundary (220).
2. The method (100) according to claim 1, wherein the second outer boundary (220) comprises a plurality of boundary segments (222, 224, 226, 228, 230, 232, 234, 236), wherein at least two of the boundary segments are straight segments (222, 226, 230, 234).
3. The method (100) according to claim 2, wherein the straight segments (222, 230; 226, 234) are parallel to each other.
4. The method (100) according to any one of the preceding claims, wherein the construction surface (214) is a planar surface.
5. The method (100) according to any one of the preceding claims, wherein the cutting tool component (200) includes an outer peripheral surface (204), and wherein, The first outer boundary (218) is located at the junction between the machined surface (212) and the outer peripheral surface (204).
6. The method (100) according to any one of the preceding claims, wherein, The cutting tool component (200) is a tool holder, which includes a cutting element interface (206) configured to carry a cutting element.
7. The method (100) according to any one of the preceding claims, wherein the method (100) further comprises the following steps: - Clean (106) the constructed surface (214).
8. The method (100) according to any one of the preceding claims, wherein the method (100) further comprises the following steps: - Perform (114) post-manufacturing operations on the replacement part (240).