Overlap type cutting edge tip system

Abstract

The cutting edge tip (400) includes an attachment portion (402) that defines an adaptor receiving cavity (404). A working portion (411) extends forwardly from the attachment portion (402). A first lateral end portion (414) is disposed along the lateral direction (408), the first lateral end portion (414) defining a first lateral end face (416) that jogs in the lateral direction, and a second lateral end portion (418) is disposed along the lateral direction (408) opposite the first lateral end portion (414). The second lateral end portion (418) also defines a second lateral end face (420) that jogs in the lateral direction.

Description

Technical Field

[0001] The present disclosure relates to work tool assemblies such as bucket assemblies used in earthmoving, mining, construction machinery, etc. More specifically, the present disclosure relates to an assembly employing an overlapping cutting edge tip system.

Background Art

[0002] Machines such as wheel loaders and excavators employ work tool assemblies including bucket assemblies, rakes, shears, etc., to which teeth or tips are attached to assist in working on materials such as soil, rock, sand, etc. For example, teeth or tips can be attached to a bucket assembly to help the bucket assembly penetrate the ground and facilitate scooping up soil into the bucket, etc. An adapter is usually attached to the working end (e.g., base edge, side edge, etc.) of a bucket or other work tool, and different types of teeth or tips can be attached to the work tool. Also, by providing an adapter attached to the work tool, the tip or tooth can be easily replaced when worn.

[0003] More specifically, in some applications, it is desirable to level or clean the bottom surface of an excavation feature to provide a foundation, etc. For such applications, overlapping cutting edge tips are provided. Although there are many such systems in the prior art, they may not be satisfactory for all applications or may not provide an appropriate lifespan.

[0004] Japanese Patent No. 6413660B2 provides a central cutting edge tip that provides a vertical overlap at the joint between two adjacent cutting edges. Thus, only vertical support at the joint is provided, but the thrust load or side load is not necessarily shared.

[0005] Furthermore, Japanese Patent No. U3216474 provides a central cutting edge tip system that provides horizontal overlap, but is not suitable for enabling variable spacing between adapters.

[0006] Therefore, a more robust overlapping cutting edge chip system is ensured, which can accommodate variable adapter spacing and provide support in multiple directions at the junction between adjacent chips. [Overview of the project]

[0007] A cutting edge tip according to one embodiment of the present disclosure may include mounting portions defining an adapter housing gap, an assembly direction, a lateral direction perpendicular to the assembly direction, and a lateral direction perpendicular to both the assembly direction and the lateral direction. A working portion may extend forward from the mounting portion along the assembly direction and form a front working edge. A first lateral end portion may be positioned along the lateral direction and define a first lateral end face that jogs laterally. A second lateral end portion may be positioned along the lateral direction opposite to the first lateral end portion. The second lateral end portion may also define a second lateral end face that jogs laterally.

[0008] Cutting edge tips according to other embodiments of the present disclosure may include mounting portions defining an adapter housing gap, an assembly direction, a lateral direction perpendicular to the assembly direction, and a lateral direction perpendicular to both the assembly direction and the lateral direction. A working portion may extend forward from the mounting portion along the assembly direction and form a front working edge. A first lateral end portion may be positioned along the lateral direction and define a first lateral end face, while a second lateral end portion may be positioned along the lateral direction opposite to the first lateral end portion and define a second lateral end face. The front work edge may include a first work edge portion extending laterally inward from a first lateral end face at a first vertical level, a second work edge portion extending from the first work edge portion and located at a second vertical level higher than the first vertical level of the first work edge portion, and a third work edge portion extending from the second work edge portion to a second lateral end face located at a third vertical level higher than the second vertical level of the second work edge portion.

[0009] A side cutting edge tip according to one embodiment of the present disclosure may include mounting portions defining an adapter housing gap, an assembly direction, a lateral direction perpendicular to the assembly direction, and a vertical direction perpendicular to both the assembly direction and the lateral direction. A working portion may extend forward from the mounting portion along the assembly direction and form a front working edge. A first lateral end portion may be positioned along the lateral direction and define a first lateral end face that jogs laterally, while a second lateral end portion may be positioned along the lateral direction opposite to the first lateral end portion and define a second lateral end face that jogs laterally. The first lateral end portion may include a side wall extending vertically upward from the working portion. [Brief explanation of the drawing]

[0010] [Figure 1] This is a perspective view of a work tool assembly, such as a bucket assembly, that uses an overlapping cutting edge tip system (OCETS) on the bottom front lip of the bucket assembly according to one embodiment of the present disclosure. [Figure 2] This indicates that the bucket assembly is moving in a leveling motion as the bucket is pulled toward a work machine such as an excavator. [Figure 3] Figures 1 and 2 are perspective views of the OCETS attached to the bottom front lip of the bucket assembly, shown separated from the rest of the bucket assembly. [Figure 4] This is a top view of an overlapping cutting edge tip system used in a front lip with two different configurations. The upper embodiment shows how the system can be used with a wider adapter spacing, while the lower embodiment shows how the same system can be used with a narrower adapter spacing. [Figure 5] Figure 3 is a right-side view of the central cutting edge tip of the OCETS, showing how the tip conforms to the slope of the front lip to facilitate the loading and unloading of material into the bucket. [Figure 6]This is a left-facing perspective view of the left cutting edge tip, center cutting edge tip, and right cutting edge tip used in OCETS. [Figure 7] Figure 6 is a rightward perspective view of the cutting edge tip. [Figure 8] Figures 6 and 7 are top views of the right cutting edge tip. [Figure 9] Figure 8 is a front view of the right cutting edge tip. [Figure 10] Figure 8 is a left side view of the right cutting edge tip. [Figure 11] Figure 8 is a right-side view of the right cutting edge tip. [Figure 12] Figures 6 and 7 are top views of the central cutting edge tip. [Figure 13] Figure 12 is a front view of the central cutting edge tip. [Figure 14] Figure 12 is a left side view of the central cutting edge tip. [Figure 15] Figure 12 is a right side view of the central cutting edge tip. [Figure 16] Figures 6 and 7 are top views of the left cutting edge tip. [Figure 17] Figure 16 is a front view of the left cutting edge tip. [Figure 18] Figure 16 is a left side view of the left cutting edge tip. [Figure 19] Figure 16 is a right side view of the left cutting edge tip. [Modes for carrying out the invention]

[0011] Embodiments of the present disclosure are described in detail below, with examples shown in the accompanying drawings. Wherever possible, the same reference numeral is used in the drawings to indicate identical or similar parts. In some cases, reference numerals are indicated herein, and the drawings indicate the reference numeral in the form of 100a, 100b, etc., followed by a letter, or in the form of 100', 100'', etc., followed by a prime indicator. It should be understood that the use of a letter or prime number immediately following a reference numeral indicates that these features have similar shapes and similar functions, for example, as is often seen when geometric shapes enclose a symmetrical plane mirror image. In this specification, letters or primes are not usually included for ease of explanation, but may be shown in the drawings to indicate overlap of features described herein.

[0012] Next, we will describe overlapping cutting edge tip systems (OCETS) that may include right cutting edge tips, central cutting edge tips (or more), and left cutting edge tips according to various embodiments of the present disclosure.

[0013] Starting with Figures 1 and 2, the work tool assembly 100 may take the form of a bucket assembly 100a, which includes a housing 101 defining an opening 102 communicating with a substantially enclosed interior. Starting from the rear of the bucket assembly 100a, the bucket assembly 100a includes a curved shell profile 104 that is attached to the upper wall 106 at the upper end of the shell 104. The other end of the shell is attached to the bottom plate 108 of the assembly 100. Two substantially flat end plates 114 are attached to the side edges of the top plate 106, the bottom plate 108, and the shell 104.

[0014] The side edge assembly 115 is attached to each end plate 114, while the front edge assembly 200 (hereinafter referred to as OCETS) is attached to the front edge of the bottom plate 108 of the bucket assembly 100. The front edge assembly 200 includes a base edge 202 (also referred to as a front lip), a plurality of central adapters 204 attached to the base edge 202, and a plurality of cutting edge tips 300, 400, 500 each attached to one of the plurality of central adapters 204. Also, in some embodiments, two corner adapters that may also be attached to the base edge 202 and / or the side edges may be provided.

[0015] It should be understood that the working tool assembly may take other forms than the bucket assembly including a rake assembly, a shear assembly, etc. Also, any of the embodiments of the cutting edge tips may be used in any of these other forms of working tool assemblies including bucket assemblies of other different configurations.

[0016] Referring now to FIGS. 6 - 19, embodiments of the cutting edge tips 300, 400, 500 will be described in more detail. Referring to FIGS. 8, 12, and 16, such cutting edge tips 300, 400, 500 may include attachment portions 302, 402, 502 that define adapter receiving voids 304, 404, 504, assembly directions 306, 406, 506, lateral directions 308, 408, 508 perpendicular to the assembly directions, and vertical directions 310, 410, 510 perpendicular to the assembly and lateral directions.

[0017] The working portions 311, 411, and 511 may extend forward from the mounting portions 302, 402, and 502 along the assembly directions 306, 406, and 506, forming the front working edges 312, 412, and 512. Additionally, the first lateral end portions 314, 414, and 514 may be positioned along the lateral directions 308, 408, and 508. These first lateral end portions 314, 414, and 514 may define first lateral end faces 316, 416, and 516 that jog laterally. Similarly, the second lateral end portions 318, 418, and 518 may be positioned along the lateral directions 308, 408, and 508 opposite to the first lateral end portions 314, 414, and 514. The second lateral end portions 318, 418, and 518 can also define second lateral end faces 320, 420, and 520 that jog laterally.

[0018] As best shown in Figures 8, 10, 12, and 14, the first lateral end faces 316, 416 may include first lateral outer end faces 322, 422 (defining the lateral tip), which extend along the assembly direction 306, 406 and the vertical direction 310, 410 (for example, at least a portion of this surface extends at an angle to the horizontal plane) and are positioned laterally adjacent to the mounting portions 302, 402. Furthermore, the first lateral inner end faces 324, 424 (spaced laterally inward from 322, 422) extend along the assembly direction 306, 406 (i.e., this is the direction of the maximum extent of this surface) and are positioned laterally adjacent to the working portions 311, 411. The first transition surfaces 326, 426 can be interposed between the first lateral outer end surfaces 322, 422 and the first lateral inner end surfaces 324, 424. The first transition surfaces 326, 426 can extend laterally between these surfaces 322, 422, 324, 424 (i.e., the lateral direction is the direction of maximum extension of this surface). More specifically, in some embodiments of the present invention, the first transition surfaces 326, 426 may be perpendicular to the assembly direction 306, 406, as well as the first lateral outer end surfaces 322, 422 and the first lateral inner end surfaces 324, 424.

[0019] Referring to Figures 12, 15, 16, and 19, it is understood that the second lateral end faces 420, 520 may include second lateral outer end faces 428, 528 that extend along the assembly direction 406, 506 (the maximum range dimension) and are positioned laterally adjacent to the working portions 411, 511. Furthermore, the second lateral inner end faces 430, 530 extend along the assembly direction 406, 506 and the vertical direction 410, 510 (for example, at least a portion of this surface may be at an angle to the horizontal plane) and are positioned laterally adjacent to the mounting portions 402, 502. Also, second transition surfaces 432, 532 can be interposed between the second lateral outer end faces 428, 528 and the second lateral inner end faces 430, 530. In some embodiments of this disclosure, these second transition surfaces 432, 532 may extend primarily laterally.

[0020] As best shown in Figures 12 and 15, the second transition surface 432 may be perpendicular to the assembly direction 406, the second lateral outer end face 428, and the second lateral inner end face 430. As shown in Figure 12, the second transition surface 432 is spaced backward from the first transition surface 426 along the assembly direction 406 by a predetermined distance 433 (e.g., a distance greater than 5.0 mm in some embodiments), and the first lateral end face 416 has a shape at least partially complementary to the second lateral end face 420. The configuration of these features may allow the first lateral end portion to fit or connect with the second lateral end portion. Other configurations of these features are also possible in other embodiments of the present disclosure.

[0021] To this end, as shown in Figures 8 to 10 and Figures 12 to 14, the protruding shelf sections 334 and 434 can extend laterally from the shelf section sides 336 and 436 positioned vertically above the first lateral inner end faces 324 and 424 toward the mounting sections 302 and 402.

[0022] As shown in Figures 13 and 14, the protruding shelf portion 434 defines a first lateral end slot 438, which is bounded by a rear surface 440 that is coplanar with or offset backward from the second lateral transition surface 432, and a third lateral inner end surface 442 that is offset laterally inward from the first lateral inner end surface 424. Similar structures can be shown in Figures 9 and 10.

[0023] Referring here to Figures 13, 15, 17, and 19, it can be seen that the second lateral end portions 418, 518 can define bottom pockets 444, 544 whose boundaries are defined by third lateral outer end surfaces 446, 546 offset laterally inward from the second lateral outer end surfaces 428, 528. The third transition surfaces 448, 548 can extend laterally inward from the third lateral outer end surfaces 446, 546. The third transition surfaces 448, 548 may be coplanar with the first transition surface 426, or may be offset forward from the first transition surface 426 (shown only for embodiment 400). The fourth transition surfaces 450, 550 can extend backward along the assembly direction and vertically upward from the third transition surfaces 448, 548.

[0024] The bosses 452, 552 may be positioned above the bottom pockets 444, 544, extending laterally outward from the working sections 411, 511 to the second lateral outer end faces 428, 528, and backward from the front working edges 412, 512 along the assembly direction 406, 506. These bosses 452, 552 may terminate substantially above the third transition faces 448, 548. This feature may be configured differently in other embodiments of the present disclosure.

[0025] Here, specific embodiments of the central cutting edge tip are described with reference to Figures 12-15.

[0026] Such a cutting edge tip 400 may include an adapter housing gap 404, a mounting portion 402 defining an assembly direction 406, a transverse direction 408 perpendicular to the assembly direction 406, and a vertical direction 410 perpendicular to the assembly direction 406 and the transverse direction 408. The working portion 411 may extend forward from the mounting portion 402 along the assembly direction 406, as described above herein, and form a front working edge 412.

[0027] Similarly, the first lateral end portion 414 may be positioned along a lateral direction 408 defining the first lateral end face 416. This surface may or may not be jog in various embodiments of the present disclosure.

[0028] Similarly, the second lateral end portion 418 may be positioned along the lateral direction 408 on the opposite side of the first lateral end portion 414. The second lateral end portion 418 may also define a second lateral end face 420 which may or may not be jogged in various embodiments of the present disclosure.

[0029] The front work edge 412 may include a first work edge portion 454 extending laterally inward from the first lateral end face 416 at a first vertical level 456, a second work edge portion 458 extending laterally from the first work edge portion 454 and located at a second vertical level 460 higher than the first vertical level 456 of the first work edge portion 454, and a third work edge portion 462 extending laterally from the second work edge portion 458 to the second lateral end face 420. This third work edge portion 462 may be located at a third vertical level 464 higher than the second vertical level 460 of the second work edge portion 458.

[0030] As shown in Figure 14, the first lateral end face 416 may extend from the first working edge portion 454 along the assembly direction 406 to teach the transition axis 465. Then, the first lateral end face 416 may extend from the transition axis 465 to the first rear tip 466 of the cutting edge tip at a ramp angle 468 oblique to the assembly direction 406. This may not apply to other embodiments of the present disclosure. Other dimensions and angles are also possible.

[0031] Similarly, in Figure 15, the second lateral end face 420 extends from the third working edge portion 462 along the assembly direction 406 to a different transition axis 470. From there, the second lateral end face 420 extends to the second rear tip 472 of the cutting edge tip at the same oblique ramp angle 468.

[0032] As shown in Figure 12, the cutting edge tip 400 may define a partially trapezoidal slot 474 bounded by a first rear tip 466, a second rear tip 472, and a mounting portion 402. This may not apply to other embodiments of the present disclosure.

[0033] Similarly, as shown in Figures 14 and 15, the mounting portion 402 may include a prismatic conical shape 476 defining the adapter housing gap 404. The lock housing opening 478 may communicate with the adapter housing gap 404. Referring together to Figures 14, 15, and 3, the first lateral end portion 414 may include a socket (see, for example, 438), and the second lateral end portion 418 may include a tongue 480 configured to fit into the socket.

[0034] The socket may include an upper fork portion 482 positioned at a fourth vertical level 484 higher than the third vertical level 464 of the third working edge portion 462, a bottom fork portion 486 extending backward from the first working edge portion 454 along the assembly direction 406, and a connector portion 488 connecting the upper fork portion 482 and the bottom fork portion 486. The tongue 480 may be positioned laterally away from the socket at the second vertical level 456 of the second working edge portion 458. Again, other configurations are possible in other embodiments of the present disclosure.

[0035] Next, we will describe the side cutting edge tips shown in Figures 16 to 19.

[0036] For example, such a cutting edge tip 500 may include an adapter housing gap 504, an assembly direction 506, a lateral direction 508 perpendicular to the assembly direction, and a vertical direction 510 perpendicular to the assembly direction 506 and the lateral direction 508. The working portion 511 may extend forward from the mounting portion 502 along the assembly direction 506, forming a front working edge 512.

[0037] The first lateral end portion 514 defines a first lateral end face 516 that is positioned laterally and jogs laterally. The second lateral end portion 518 defines a second lateral end face 516 that is positioned laterally on the opposite side of the first lateral end portion 514 and jogs laterally. The first lateral end portion 514 may include a side wall 590 extending vertically upward from the working portion 511. A similar description is given with respect to Figures 8 to 11, except that the features are mirrored.

[0038] As shown in Figures 16 to 19, the side wall 590 extends vertically upward and backward along the assembly direction 506 from the front working edge 512 to the upper surface 592 of the mounting portion 502, and also forms the first lateral end face 516. Again, a similar explanation is given with respect to Figures 8 to 11, except that the features are mirrored.

[0039] As shown in Figures 16 and 19, the second lateral end face 520 defines at least partially a tongue portion 580 that defines the lateral tip 593 of the side cutting edge 500, and further defines a slot 594 located behind the tongue portion 580 along the assembly direction 506 and extending to the rear tip 572 of the side cutting edge 500.

[0040] The socket portion 595 may be positioned laterally between the second lateral end face 520 and the mounting portion 502, and the recess 596 may be positioned laterally outward adjacent to the socket portion 595 and extend forward along the assembly direction 506 to the front working edge 512. The pad (see, for example, the boss 552) may be positioned along the assembly direction 506, laterally adjacent to the lateral end 593 and adjacent to the front working edge 512.

[0041] Furthermore, the dimensions, angles, surface area, and / or configuration of various features, including those not specifically mentioned herein, may be modified as desired or as needed. Although not specifically described, blends such as fillets are shown to connect various surfaces. These may be omitted in other embodiments, and it should be understood that their presence may be ignored when reading this specification unless otherwise specified. Industrial applicability

[0042] In practice, machinery, work tool assemblies, OCETS, or their components may be manufactured, purchased, or sold in an aftermarket setting to modify machinery or work tool assemblies in the field, or they may be manufactured, purchased, sold, or otherwise obtained in an OEM (original equipment manufacturer) setting.

[0043] The above components may be manufactured from any suitable material, including iron, gray cast iron, steel, etc.

[0044] The various features of OCETS can result in the following performance characteristics: First, as is evident from line 206 in Figure 2, the working edge formed by OCETS is designed to wear evenly over time. Also, line 208 shows that the extra material at the corner may help maintain a right-angle corner throughout the wear life of the side cutting edge tip.

[0045] In Figure 3, arrow 210 indicates that the stepped / staggered overlap 212 of the edges prevents material from flowing / passing through the entire length of the chip, reducing wear when loading or dumping buckets or other wear equipment. At the same time, the adapter spacing 214 can be made variable. This concept is reinforced in Figure 4, where the spacing 214 taken from Figure 3 (see example 200 at the top) is reduced to 214a (see example 200a at the bottom). This is an important result not taught in the prior art.

[0046] Figure 5 shows the smooth inflow and outflow of the material, indicated by arrow 216. This is true because the ramp surface 218 of OCETS is perpendicular to and parallel to the bevel surface 220 of the base edge 202.

[0047] The socket-to-tongue connection shown in Figure 3 (see 212) also allows for both upward and downward vertical support, making the OCETS more robust.

[0048] To maintain consistency and versatility during the assembly process, the first lateral end portion of the right cutting edge tip may be constructed similarly to or identically to the first lateral end portion of the center cutting edge tip. Similarly, the second lateral end portion of the left cutting edge tip may be constructed similarly to or identically to the second lateral end portion of the center cutting edge tip, and so on.

[0049] During assembly, the right cutting edge tip is typically attached to the rightmost adapter first, then the center cutting edge tip is attached to the adapters from right to left, and finally the left cutting edge tip is attached to the leftmost adapter.

[0050] The side walls of the left and right cutting edge tips may be similar or identical in construction. They may be sloped to provide a funneling path for material flowing into a bucket or other work tool.

[0051] It should be understood that the foregoing description provides examples of the disclosed assemblies and techniques. However, other embodiments of the present disclosure are expected to differ in detail from the foregoing examples. All references to the present disclosure or its examples are intended to refer to the specific examples described therein and are not intended to imply any more general limitations on the scope of the present disclosure. All language of distinction and criticism regarding certain features is intended to indicate a lack of preference for those features, but is not entirely excluded from the scope of the present disclosure unless otherwise stated.

[0052] Unless otherwise indicated herein, descriptions of value ranges herein are intended solely as a concise way of referring individually to the individual values ​​that fall within the range, and the individual values ​​are incorporated herein as if they were individually described herein.

[0053] As used herein, the articles “a” and “an” are intended to include one or more items and may be used interchangeably with “one or more.” When only one item is intended, the term “one” or a similar term is used. Furthermore, as used herein, terms such as “has,” “have,” “having,” and “with” are intended to be unrestricted terms. In addition, the phrase “based on” is intended to mean “based at least partially” unless otherwise specified.

[0054] As will be apparent to those skilled in the art, various modifications and changes can be made to the embodiments of the apparatus and assembly methods discussed herein without departing from the scope or spirit of the invention. Other embodiments of the disclosure will be apparent to those skilled in the art by considering the specifications and practices of the various embodiments disclosed herein. For example, some apparatus may have different configurations and functions than those described herein, certain steps of any method may be omitted, performed in a different order than those already specifically mentioned, and may be performed simultaneously or in substeps. Furthermore, certain aspects or features of the various embodiments may be modified or altered to create further embodiments, and features and aspects of the various embodiments may be added to or replaced by other features or aspects of other embodiments to provide even further embodiments.

[0055] Accordingly, this disclosure includes, to the extent permitted by applicable law, all modifications and equivalents of the subject matter described in the appended claims. Furthermore, unless otherwise indicated herein, or unless such modifications are clearly inconsistent with the context, any combination of the above elements in all possible modifications is included in this disclosure.

Claims

1. Cutting edge tips (300, 400, 500), Mounting portions (302, 402, 502) defining adapter housing gaps (304, 404, 504), assembly direction (306, 406, 506), lateral direction (308, 408, 508) perpendicular to the assembly direction (306, 406, 506), and vertical direction (310, 410, 510) perpendicular to the assembly direction (306, 406, 506) and the lateral direction (308, 408, 508), A work portion (311, 411, 511) extends forward from the mounting portion (302, 402, 502) along the assembly direction (306, 406, 506) and forms a front work edge (312, 412, 512), The first lateral end portion (314, 414, 514) is arranged along the lateral direction (308, 408, 508) and defines a first lateral end face (316, 416, 516) that jogs in the lateral direction, It includes a second lateral end portion (318, 418, 518) positioned along the lateral direction (308, 408, 508) opposite to the first lateral end portion (314, 414, 514) and defining a second lateral end face (320, 420, 520) that jogs in the lateral direction, The aforementioned front working edge (312, 412, 512) includes a first working edge portion extending laterally inward from the first lateral end face (316, 416, 516) at a first vertical level, and a second working edge portion extending from the first working edge portion and located at a second vertical level higher than the first vertical level of the first working edge portion. The first lateral end faces (316, 416) include a first lateral outer end face (322, 422) extending along the assembly direction (306, 406, 506) and the vertical direction (310, 410, 510) and positioned laterally adjacent to the mounting portion (302, 402, 502); a first lateral inner end face (324, 424) extending along the assembly direction (306, 406, 506) and positioned laterally adjacent to the work portion (311, 411, 511); and a first transition surface (326, 426) interposed between the first lateral outer end face (316, 416) and the first lateral inner end face (324, 424) and extending laterally. The second lateral end faces (420, 520) include a second lateral outer end face (428, 528) extending along the assembly direction (306, 406, 506) and positioned laterally adjacent to the work portion (311, 411, 511), a second lateral inner end face (430, 530) extending along the assembly direction (306, 406, 506) and the vertical direction (310, 410, 510) and positioned laterally adjacent to the mounting portion (302, 402, 502), and a second transition surface (432, 532) interposed between the second lateral outer end face (428, 528) and the second lateral inner end face (430, 530) and extending laterally. The cutting edge tip (300, 400, 500) has a second transition surface (432) perpendicular to the assembly direction (306, 406, 506), the second lateral outer end surface (428), and the second lateral inner end surface (430), and the second transition surface (432) is spaced backward from the first transition surface (432) by a predetermined distance (433) along the assembly direction (306, 406, 506), and the first lateral end surface (416) has a shape that is at least partially complementary to the second lateral end surface (420).

2. The cutting edge tip (300, 400, 500) according to claim 1, wherein the first transition surface (326, 426) is perpendicular to the assembly direction (306, 406, 506), the first lateral outer end surface (322, 422), and the first lateral inner end surface (324, 424).

3. The present invention further includes an overhanging shelf portion (334, 434) extending laterally toward the mounting portion (302, 402, 502) from a shelf portion side surface (336, 436) positioned vertically above the first lateral inner end surface (324, 424), the overhanging shelf portion (334, 434) defining a first lateral end slot (438) whose boundary is defined by a rear surface (440) that is coplanar with or offset backward from the second transition surface (432), and a third lateral inner end surface (442) that is offset laterally inward from the first lateral inner end surface (424), The cutting edge tip (300, 400, 500) according to claim 1, wherein the second lateral end portion (418, 518) defines a bottom pocket (444, 544) whose boundary is defined by a third lateral outer end surface (446, 546) offset laterally inward from the second lateral outer end surface (428, 528), a third transition surface (448, 548) extending laterally inward from the third lateral outer end surface (446, 546) and coplanar with the first transition surface (426), or offset forward from the first transition surface (426), and a fourth transition surface (450, 550) extending backward along the assembly direction (306, 406, 506) and vertically upward from the third transition surface (448, 548).

4. A cutting edge tip (400), A mounting portion (402) that defines an adapter housing space (404), an assembly direction (406), a lateral direction (408) perpendicular to the assembly direction (406), and a vertical direction (410) perpendicular to the assembly direction (406) and the lateral direction (408), A work portion (411) extends forward from the mounting portion (402) along the assembly direction (406) and forms a front work edge (412), A first lateral end portion (414) is arranged along the lateral direction and defines the first lateral end face (416), It includes a second lateral end portion (418) positioned along the lateral direction opposite to the first lateral end portion (414) and defining a second lateral end face (420), The aforementioned front work edge (412) includes a first work edge portion (454) extending laterally inward from the first lateral end face (416) at a first vertical level (456), a second work edge portion (458) extending from the first work edge portion (454) and located at a second vertical level (460) higher than the first vertical level (456) of the first work edge portion (454), and a third work edge portion (462) extending from the second work edge portion (458) to the second lateral end face (420) located at a third vertical level (464) higher than the second vertical level (460) of the second work edge portion (458), The first lateral end portion (414) includes a socket (438), and the second lateral end portion (418) includes a tongue (480) configured to fit into the socket, the socket including an upper fork portion (482) positioned at a fourth vertical level (484) higher than the third vertical level (464) of the third working edge portion (462), a bottom fork portion (486) extending backward from the first working edge portion (454) along the assembly direction (406), and a connecting portion (488) connecting the upper fork portion and the bottom fork portion, the tongue (480) being positioned laterally away from the socket at the second vertical level (460) of the second working edge portion (458), is a cutting edge tip (400).

5. The cutting edge tip (400) according to claim 4, wherein the first lateral end face (416) extends along the assembly direction (406) from the first working edge portion (454) to the transition axis (465), and extends from the transition axis (465) to the first rear tip (466) of the cutting edge tip at an oblique ramp angle (468) with respect to the assembly direction (406).

6. The cutting edge tip (400) according to claim 5, wherein the second lateral end face (420) extends along the assembly direction (406) from the third working edge portion (462) to a different transition axis (470), and extends from the different transition axis (470) to the second rear tip (472) of the cutting edge tip at the same oblique ramp angle (468).

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