Cutter eccentricity adjusting device and cutter thereof

Abstract

The invention discloses a cutter eccentricity adjusting device and a cutter thereof, and belongs to the technical field of metal cutting cutters, and the cutter eccentricity adjusting device comprises a cutter body, a blade, an eccentricity adjusting piece and a locking piece. A reference hole is formed in the cutter body. A butt joint hole is formed in the blade. A locking hole which is eccentrically arranged relative to the eccentric adjusting piece body is formed in the eccentric adjusting piece. The locking piece can penetrate through the butt joint hole and is matched with the locking hole located in the datum hole. An independent eccentric adjusting piece with an eccentric locking hole is introduced between a reference hole of a cutter body and a butt joint hole of a blade, and a traditional eccentric implementation mode that an eccentric hole is directly machined in the cutter body is changed into a structural design that eccentricity is achieved through a device. After penetrating through the butt joint hole of the blade, the locking piece is not directly matched with the cutter body, but is matched with the eccentric locking hole of the eccentric adjusting piece in the reference hole of the cutter body, so that the eccentric structure and the cutter body are decoupled, a high-precision eccentric hole is prevented from being machined in the cutter body, and the machining difficulty is remarkably reduced.

Description

Technical Field

[0001] This invention belongs to the field of metal cutting tool technology, specifically a tool eccentricity adjustment device and its tool. Background Technology

[0002] In indexable cutting tools, the insert is typically screwed into the tool body through a center hole to achieve a reliable connection and positioning between the insert and the tool body. To ensure the insert remains stable during cutting, the insert mounting groove on the tool body is usually eccentrically positioned with the fastening screw hole. This creates a radial clamping force during screw tightening, which continuously presses the insert against the side positioning surface of the insert groove, ensuring the repeatability of the insert position and the stability of the cutting angle.

[0003] In the above structure, the eccentric hole in the insert groove serves as a key reference for insert installation and positioning. The machining accuracy of the eccentric hole directly affects the insert's assembly state and cutting stability. If the size or position deviation of the eccentric hole exceeds the design requirements, the insert will not be able to fully fit with the tool groove positioning surface, resulting in assembly gaps or force misalignment. Even if assembly is completed, the insert is prone to loosening and tilting, which in turn affects the cutting angle, machining accuracy, and surface quality. In severe cases, it may even cause safety hazards such as insert chipping or falling off. Furthermore, substandard eccentric hole machining will cause uneven force on the tool during cutting, resulting in vibration and wobble. This not only reduces the workpiece machining quality but may also adversely affect machine tool spindles and other equipment.

[0004] From a manufacturing perspective, cutting tools require multiple machining and inspection processes, resulting in high manufacturing costs. If an entire tool is scrapped due to a single defective eccentric hole in the insert groove, it leads to a significant waste of materials and time. Current eccentric hole machining processes for insert grooves generally employ a trial-and-error approach, verifying the eccentricity through post-machining assembly and inspection. If the eccentricity fails to meet the standard, it must be repeated in other parts of the tool body, or even the entire tool body must be replaced and remanufactured. This results in long production cycles, low efficiency, and high scrap rates.

[0005] Furthermore, the blade may undergo slight deformation during the production process, causing its actual size to deviate from the design parameters. During assembly, gaps can easily form between the blade and the cutting groove, often requiring readjustment or machining of eccentric holes, which further exacerbates the complexity of the processing and manufacturing costs. Summary of the Invention

[0006] The purpose of this invention is to provide a tool eccentricity adjustment device and a tool thereof to solve the problems mentioned in the prior art.

[0007] A tool eccentricity adjustment device is provided, comprising: The cutter body has a reference hole formed on it; The blade has a mating hole formed on it; An eccentric adjustment component has a locking hole formed thereon that is eccentrically arranged relative to the body of the eccentric adjustment component; A locking element that can pass through the mating hole and mate with a locking hole located in the reference hole.

[0008] As a further embodiment of the present invention: the eccentric adjustment component also includes a thrust cone and a lever, a locking hole is formed in the thrust cone, the hole wall of the reference hole is formed with a first hole section that can contact and cooperate with the thrust cone and a second hole section that can cooperate with the thrust cone in a clearance manner, and the lever extends out from the end of the reference hole away from the blade.

[0009] As a further aspect of the present invention, the thrust cone and the first hole segment are engaged by a spline.

[0010] As a further embodiment of the present invention: the eccentric adjustment component also includes a locking component and a spring. The locking component cooperates with the second hole section, and the spring surrounds the periphery of the lever and the two ends of the spring are limited between the thrust cone and the locking component. The lever moves through the locking component.

[0011] As a further aspect of the present invention: the anti-detachment component is threadedly connected to the second hole section, and the threaded surface of the anti-detachment component is provided with multiple flat grooves along the circumferential direction.

[0012] As a further aspect of the present invention: an inwardly recessed stress isolation groove is formed between the first hole segment and the second hole segment.

[0013] In another aspect, the present invention provides a cutting tool, including the above-mentioned eccentric adjustment device, wherein a plurality of reference holes are arranged sequentially along the circumference of the cutting body, and the cutting body forms a mounting groove in the cutting face region of the reference holes, and the cutting blade is in contact with the groove wall of the mounting groove.

[0014] As a further aspect of the present invention: the mounting groove includes a groove bottom surface that contacts the blade end face and a groove side surface that contacts the blade side surface, and the groove side surface has an inwardly recessed partition groove that divides the groove side surface into two solid parts.

[0015] As a further aspect of the present invention: the locking hole is eccentric relative to the eccentric adjustment member in the direction of the partition groove area.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By introducing an independent eccentric adjustment component with an eccentric locking hole between the reference hole of the tool body and the mating hole of the insert, the traditional method of directly machining the eccentric hole on the tool body is transformed into a structural design that achieves eccentricity through a device. After the locking component passes through the mating hole of the insert, it does not directly mate with the tool body, but rather mates with the eccentric locking hole of the eccentric adjustment component in the reference hole of the tool body. This decouples the eccentric structure from the tool body, avoids machining a high-precision eccentric hole on the tool body, and significantly reduces the machining difficulty.

[0017] 2. The locking hole of the eccentric adjustment component is eccentric relative to the center of the main body. Furthermore, after the eccentric adjustment component is assembled with the reference hole, the locking hole is eccentric relative to the reference hole. When the locking component is tightened, the blade axis is forced to offset along the eccentric hole. The resultant force generated by the locking component on the blade includes a radial component, which acts on the side wall of the tool body mounting groove through the blade to achieve pressing and positioning. The eccentricity and eccentricity direction are no longer determined by the machining accuracy of the tool body, but by the structure of the device, in order to improve the versatility of the tool body and reduce the risk of scrapping the entire tool due to out-of-tolerance eccentric holes.

[0018] 3. The assembly eccentricity can be adjusted by replacing or rotating the eccentricity adjustment component to correct minor errors in the tool body positioning surface, ensuring that the clamping force is precisely directed towards the positioning surface. If there are situations requiring adjustment of the eccentricity due to tool body machining errors, tool wear, or blade deformation, there is no need to re-machine the tool body, thus reducing production costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the cutting tool of the present invention; Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 This is an exploded view of the structure of the cutting tool of the present invention; Figure 4 This is a cross-sectional view of the eccentric adjustment component of the present invention.

[0021] In the diagram: 1. Tool body; 11. Reference hole; 111. First hole section; 112. Second hole section; 113. Stress isolation groove; 12. Mounting groove; 121. Groove bottom surface; 122. Groove side surface; 123. Separating groove; 2. Blade; 21. Butt joint hole; 3. Eccentric adjustment component; 31. Locking hole; 32. Thrust cone; 33. Lever; 34. Anti-disengagement component; 341. Flat groove; 35. Spring; 4. Locking component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0023] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0024] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0025] Please see Figures 1-3 As shown in the illustration, in this embodiment of the invention, a tool eccentricity adjustment device includes a tool body 1, a blade 2, an eccentricity adjustment member 3, and a locking member 4. A reference hole 11 is formed on the tool body 1. A mating hole 21 is formed on the blade 2. A locking hole 31 is formed on the eccentricity adjustment member 3, which is eccentrically arranged relative to the main body of the eccentricity adjustment member 3. The locking member 4 can penetrate the mating hole 21 and engage with the locking hole 31 located within the reference hole 11.

[0026] Before assembly, a reference hole 11 is pre-machined on the cutter body 1. This reference hole 11 is a non-eccentric hole. A mating hole 21 is formed on the blade 2, and the mating hole 21 is located in the central area of ​​the blade 2. The eccentric adjustment component 3 is an independent component, and the locking hole 31 formed on its body is eccentrically arranged relative to the axis of the eccentric adjustment component 3 body.

[0027] During assembly, the eccentric adjustment component 3 is first inserted into the reference hole 11 of the tool body 1, so that the outer circle or shape of the eccentric adjustment component 3 forms a mating positioning relationship with the reference hole 11. Since the reference hole 11 itself does not have an eccentric structure, the installation of the eccentric adjustment component 3 in the reference hole 11 is not limited by the amount or direction of eccentricity, and only serves to accommodate and position it. After the eccentric adjustment component 3 is installed in place, the axis of the locking hole 31 has formed a definite eccentricity relative to the axis of the reference hole 11.

[0028] Subsequently, the locking member 4 is inserted through the mating hole 21 of the blade 2 and further inserted into the locking hole 31 of the eccentric adjustment member 3 located in the reference hole 11. When the locking member 4 begins to tighten and gradually generates axial clamping force, due to the eccentricity of the locking hole 31 relative to the body of the eccentric adjustment member 3, the locking member 4 is constrained by the wall of the eccentric hole during the tightening process, and the direction of the force shifts. This shift causes the locking member 4 to simultaneously generate a radial component force pointing in the eccentric direction while applying axial clamping force to the blade 2. This radial component force acts on the blade 2 through the locking member 4, causing the blade 2 as a whole to move radially toward the side wall of the blade body 1.

[0029] Specifically, the locking element 4 is a threaded bolt, and the locking hole 31 is a threaded hole. The threaded end of the locking element 4 passes through the mating hole 21 and is threadedly connected to the locking hole 31. As the thread goes deeper, the locking element 4 and the eccentric adjustment element 3 tend to move closer to each other until the bolt head of the locking element 4 is limited by the tapered step of the mating hole 21.

[0030] In some embodiments, the eccentric adjustment member 3 is structurally composed of a thrust cone 32 and a lever 33. A locking hole 31 is disposed inside the thrust cone 32 and is eccentrically arranged relative to the body of the thrust cone 32. The reference hole 11 on the cutter body 1 is axially divided into a first hole section 111 and a second hole section 112. The wall of the first hole section 111 forms a contact fit with the thrust cone 32, used for axial and radial positioning of the thrust cone 32 and bearing the eccentric load transmitted by the locking member 4. The second hole section 112 forms a clearance fit with the thrust cone 32, providing space for assembly, rotational adjustment, and axial movement.

[0031] The lever 33 is fixedly connected to the thrust cone 32 and extends from the end of the reference hole 11 away from the blade 2. This allows the thrust cone 32 to be moved or rotated around its axis by moving the lever 33 during assembly or use, thereby changing the eccentric direction of the locking hole 31. This structure provides the eccentric adjustment component 3 with good rotational adjustment freedom before locking, and after locking, it can achieve stable radial support and force transmission through the cooperation between the thrust cone 32 and the first hole section 111. This ensures both the adjustability of the eccentric direction and the structural rigidity and reliability under eccentric locking conditions.

[0032] It should be noted that the geometric eccentricity of the locking hole 31 relative to the thrust cone 32 body is fixed, but by rotating the thrust cone 32, the effective projection value of the eccentricity in the radial plane can be changed, that is, the effective radial clamping amount generated by the locking member 4 on the blade 2. Therefore, "changing the eccentricity" here does not mean changing the inherent eccentricity of the structure, but rather changing the magnitude of the component of the eccentricity in a specific clamping direction.

[0033] To elaborate further, please refer to Figures 2-4 As shown, the eccentricity of the locking hole 31 relative to the axis of the thrust cone 32 is considered as a fixed-length eccentric vector e, which rotates around the central axis of the thrust cone 32 as the thrust cone 32 rotates. When the thrust cone 32 is at different rotation angles, the direction of the eccentric vector e changes, and the projection value of e in the clamping direction of the blade 2 is different. Therefore, by controlling the rotation angle of the thrust cone 32, the eccentricity can be continuously adjusted without changing the inherent eccentricity of the structure, to adapt to different assembly tolerances and positioning requirements.

[0034] Specifically, the thrust cone 32 is configured as an external conical surface structure. The external conical surface of the thrust cone 32 forms a surface contact fit with the first hole segment 111 in the reference hole 11. The cone angle of the thrust cone 32 is selected according to the magnitude of the locking force, so that the thrust cone 32 generates a sufficiently large radial positive pressure between itself and the first hole segment 111 under the action of axial preload.

[0035] It should be noted that during the assembly process, when the locking member 4 is screwed into the locking hole 31 in the thrust cone 32 and gradually tightened, the thread engagement between the locking member 4 and the locking hole 31 will apply a torque in the rotational direction to the thrust cone 32, which may easily cause the thrust cone 32 to rotate and thus change the already adjusted eccentricity.

[0036] In one embodiment, the torque generated by the thread engagement is transmitted to the wall of the first hole section 111 through the outer conical surface of the thrust cone 32, and is offset by the frictional force formed between the thrust cone 32 and the first hole section 111. Since the frictional torque is greater than the thread torque generated during the tightening process of the locking member 4, the thrust cone 32 will not rotate during the locking process, thereby ensuring that the eccentric direction and eccentric position of the locking hole 31 remain unchanged before and after locking.

[0037] In one embodiment, the outer periphery of the thrust cone 32 is provided with multiple splines, and the inner wall of the first hole segment 111 in the reference hole 11 is correspondingly formed with an internal spline structure that matches the splines. After assembly, the two form a meshing relationship. After the thrust cone 32 is installed in the first hole segment 111 and the eccentric direction is adjusted, the thrust cone 32 and the first hole segment 111 are circumferentially locked through the splines.

[0038] Through the above spline structure, when the locking member 4 is screwed into the locking hole 31 and gradually tightened, the thread engagement between the locking member 4 and the locking hole 31 will generate a torque that causes the thrust cone 32 to rotate. This torque is transmitted to the outer peripheral spline teeth through the thrust cone 32 and is jointly borne by the engagement between the spline teeth and the spline inside the first hole section 111, thereby effectively restricting the circumferential rotation of the thrust cone 32 and ensuring that the eccentric direction and eccentric position of the locking hole 31 remain unchanged before and after locking, thereby ensuring that the blade 2 always obtains a stable and predictable radial eccentric clamping effect in the locked state.

[0039] In one specific embodiment, when adjusting the eccentricity based on the splined mesh structure, the operator first unscrews the locking member 4 from the thrust cone 32 and the blade 2 in sequence, removes the locking member 4 and the blade 2 from the cutter body 1, and restores the thrust cone 32 to its movable state. Then, an axial pulling force is applied to the thrust cone 32 by the lever 33, causing the thrust cone 32 to temporarily exit the first hole section 111 along the axis of the reference hole 11 and enter the second hole section 112, which has a clearance fit with the thrust cone 32. At this time, the splined teeth on the outer periphery of the thrust cone 32 disengage from the splined teeth in the first hole section 111, and the thrust cone 32 is in a freely rotatable state.

[0040] Subsequently, the operator uses lever 33 to rotate thrust cone 32 around axis by a predetermined angle to change the eccentricity direction of locking hole 31 relative to cutter body 1 and its effective eccentricity in the clamping direction of blade 2.

[0041] After rotation is completed, the operator pushes the thrust cone 32 axially back into the first bore section 111, causing the outer spline teeth of the thrust cone 32 to re-engage with the inner spline of the first bore section 111, thereby achieving circumferential locking at the new angular position. Through the above operation process, the eccentricity can be adjusted in stages without changing the inherent eccentricity of the thrust cone 32 structure, and the eccentric position is ensured to be stable and reliable after adjustment, avoiding displacement under the tightening of the locking part 4 or cutting vibration.

[0042] It should be noted that the operator drives the thrust cone 32 to rotate around the axis by a predetermined angle through the lever 33. The predetermined angle corresponds to the integer tooth pitch angle of the spline teeth.

[0043] In one specific embodiment, an eccentric mark is provided on the end face of the locking hole 31 of the thrust cone 32, and the marking direction of the eccentric mark is the eccentric direction.

[0044] It should be further noted that the direction of the eccentric mark on the thrust cone 32 can be adjusted from being oriented toward the central axis of the cutter body 1 to being parallel to the central axis of the cutter body 1, thus having an adjustment range of 90°.

[0045] In some embodiments, the eccentric adjustment member 3 further includes a locking member 34 and a spring 35. The locking member 34 cooperates with the second hole section 112 to limit the axial movement stroke of the thrust cone 32, preventing the thrust cone 32 from axially dislodging from the reference hole 11 during adjustment or use. The spring 35 surrounds the outer periphery of the lever 33, with its two ends abutting against the thrust cone 32 and the locking member 34, respectively. In the assembled state, it applies a continuous axial preload to the thrust cone 32, ensuring that the thrust cone 32 is always pushed towards the first hole section 111 and maintains a stable fit.

[0046] On the other hand, when eccentricity adjustment is needed, the operator can use the lever 33 to overcome the spring force of the spring 35 and retract the thrust cone 32 into the second hole section 112 for adjustment. After adjustment, the thrust cone 32 automatically resets under the action of the spring 35 and re-enters the working position. Thus, while ensuring the operability of eccentricity adjustment, the anti-dislodgement and self-resetting functions of the thrust cone 32 are achieved, improving the reliability of the eccentricity adjustment component 3 during assembly and use.

[0047] Furthermore, the anti-detachment component 34 is connected to the second hole section 112 of the reference hole 11 by a threaded connection, which allows the anti-detachment component 34 to be reliably fixed in the reference hole 11. The axial position is precisely defined by adjusting the screw-in depth, thereby providing a stable support reference for the spring 35 and adjusting the preload of the spring 35. The threaded surface of the anti-detachment component 34 is provided with multiple flat grooves 341 along the circumference, so that even when the anti-detachment component 34 is located inside the cutter body 1 and the operating space is limited, it can still be installed, disassembled or repositioned by applying rotational torque with the help of a tool.

[0048] The combination of threaded connection and flat groove 341 structure not only improves the convenience of installation and maintenance of anti-loosening component 34, but also enhances the anti-loosening capability of anti-loosening component 34 under vibration conditions, ensuring that spring 35 and thrust cone 32 maintain a stable axial constraint relationship during long-term use, thereby improving the reliability and maintainability of the overall structure of eccentric adjustment component 3.

[0049] In some embodiments, an inwardly recessed stress isolation groove 113 is provided between the first hole section 111 and the second hole section 112. The main function of the stress isolation groove 113 is to isolate the stress states of the two hole sections from each other. During use, the first hole section 111 bears the radial clamping force of the thrust cone 32 and the eccentric load transmitted by the locking member 4, while the second hole section 112 mainly bears the thread engagement load between the anti-disengagement member 34 and the second hole section 112.

[0050] Furthermore, if there is a direct transition between the two hole sections, the radial eccentric clamping stress or cutting vibration stress generated by the first hole section 111 may be directly transmitted to the second hole section 112, affecting the thread locking effect of the anti-loosening part 34, or even causing the thread to loosen; the radial clamping stress generated by the second hole section 112 may be directly transmitted to the first hole section 111, affecting the stress distribution of the thrust cone 32 and the first hole section 111 that has been adjusted.

[0051] Therefore, by forming an inwardly recessed stress isolation groove 113 between the two hole sections, a buffer zone can be formed geometrically and along the stress path, so that the radial stress of the first hole section 111 and the installation stress of the second hole section 112 are isolated from each other, thereby reducing the interference of stress transmission on the assembly structure: the stress concentration generated by the cutting vibration or locking load of the first hole section 111 will not directly act on the hole wall of the second hole section 112 and the thread surface of the anti-loosening part 34; the eccentric position of the thrust cone 32 and the preload remain stable, the adjustment and locking operation is smooth, and the clamping force of the blade 2 can be accurately transmitted.

[0052] In another aspect, the present invention provides a cutting tool, including an eccentric adjustment device, a plurality of reference holes 11 arranged sequentially along the circumference of the cutting body 1, the cutting body 1 forming a mounting groove 12 in the cutting face region of the reference holes 11, and the cutting blade 2 fitting against the groove wall of the mounting groove 12.

[0053] After the cutting insert 2 is inserted into the mounting slot 12, its side surface is positioned opposite to the wall of the mounting slot 12. By adjusting the eccentric adjustment member 3 located in the reference hole 11, the eccentric adjustment member 3 is offset in the radial direction, thereby applying a radial clamping force to the cutting insert 2. This pushes the side surface of the cutting insert 2 to continuously adhere to the wall of the mounting slot 12, achieving precise positioning of the cutting insert 2 in the radial direction. This structure allows each cutting insert 2 to independently complete position adjustment and locking, maintaining a stable force state during cutting and effectively improving the overall machining accuracy and operational stability of the tool.

[0054] More specifically, the end of the tool body 1 with the cutting blade 2 faces the workpiece, and the end of the tool body 1 away from the cutting blade 2 is connected to the machine tool spindle. When the cutting blade 2 is placed in the mounting slot 12, the cutting edge of the cutting blade 2 protrudes from the end face of the tool body 1 to enable cutting. By arranging multiple reference holes 11 circumferentially on the tool body 1, and setting an eccentric adjustment element 3 in each reference hole 11, the eccentricity and installation accuracy of each cutting blade 2 can be independently adjusted by the corresponding eccentric adjustment element 3.

[0055] This structure allows machining errors generated during the manufacturing and assembly of the tool body 1 to be effectively compensated during the assembly stage, preventing the entire tool body 1 from being scrapped due to out-of-tolerance installation positions of a single insert 2. This significantly improves the reuse rate of the tool body 1 and reduces the scrap rate. Thus, while ensuring the consistency of cutting accuracy across multiple inserts 2, it reduces the manufacturing precision requirements and overall manufacturing cost of the tool body 1, providing a reliable technological basis for distributing multiple insert 2 installation positions on the same tool body 1.

[0056] In some embodiments, the mounting groove 12 includes a groove bottom surface 121 for contacting the end face of the blade 2 and a groove side surface 122 for contacting the side surface of the blade 2. By providing an inwardly recessed partition groove 123 on the groove side surface 122, the originally continuous groove side surface 122 is divided into two independent solid parts, so that the groove side surface 122 has a certain degree of local compliance when the eccentric adjustment member 3 applies radial clamping force.

[0057] Specifically, during assembly, the insert 2 is first axially positioned by the bottom surface 121 of the groove. Subsequently, under the action of eccentric clamping force, the solid parts on both sides of the groove side surface 122 experience differentiated forces, which helps the side surface of the insert 2 to form a full and stable surface fit with the groove side surface 122, thereby eliminating assembly gaps and avoiding stress concentration. During cutting, this separation structure can also disperse the lateral stress caused by cutting loads and vibrations, reducing the risk of micro-slippage or loosening of the insert 2, and improving the positioning stability and cutting reliability of the insert 2.

[0058] Furthermore, the locking hole 31 is eccentric relative to the eccentric adjustment member 3 and points to the area of ​​the partition groove 123, so that the radial clamping force applied by the eccentric adjustment member 3 to the blade 2 is oriented to match the structural characteristics of the mounting groove 12.

[0059] During assembly and locking, the locking member 4 applies a radial force with a clear direction to the blade 2 through the locking hole 31 of the eccentric adjustment member 3. Since the eccentric direction is defined to point towards the groove side 122 area where the partition groove 123 is located, the clamping force will preferentially act on the solid part of the groove side 122 formed by the partition groove 123, so that the area will produce a slight elastic compliance when subjected to force, thereby guiding the side of the blade 2 to fit into the groove side 122 as a whole.

[0060] Compared to pointing the eccentric direction towards the continuous and rigid side surface 122 of the groove, this directional clamping method avoids the clamping force being offset by local rigid structures, reducing the possibility of the insert 2 being stuck at a single point or subjected to force on one side during the initial locking stage. During the cutting process, since the eccentric clamping force is always directed towards the partition groove 123 area, the lateral cutting force on the insert 2 can be dispersed and transmitted through the solid parts on both sides of the partition groove 123, avoiding stress concentration at a single contact edge, thereby reducing the risk of displacement, warping, or loosening of the insert 2 under high load or vibration conditions.

[0061] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A tool eccentricity adjustment device, characterized in that, include: The blade body (1) has a reference hole (11) formed thereon. The blade (2) has a mating hole (21) formed thereon; An eccentric adjustment member (3) has a locking hole (31) that is eccentrically arranged relative to the body of the eccentric adjustment member (3). The locking element (4) can pass through the mating hole (21) and engage with the locking hole (31) located in the reference hole (11).

2. The tool eccentricity adjustment device according to claim 1, characterized in that, The eccentric adjustment component (3) also includes a thrust cone (32) and a lever (33). A locking hole (31) is formed in the thrust cone (32). The wall of the reference hole (11) is formed with a first hole section (111) that can contact and cooperate with the thrust cone (32) and a second hole section (112) that can be clearance-fitted with the thrust cone (32). The lever (33) extends out from the end of the reference hole (11) away from the blade (2).

3. The tool eccentricity adjustment device according to claim 2, characterized in that, The thrust cone (32) and the first hole section (111) are connected by a spline tooth spline.

4. The tool eccentricity adjustment device according to claim 2, characterized in that, The eccentric adjustment component (3) also includes a locking component (34) and a spring (35). The locking component (34) cooperates with the second hole section (112). The spring (35) surrounds the outer periphery of the lever (33) and the two ends of the spring (35) are limited between the thrust cone (32) and the locking component (34). The lever (33) moves through the locking component (34).

5. The tool eccentricity adjustment device according to claim 4, characterized in that, The anti-detachment component (34) is threadedly connected to the second hole section (112), and the threaded surface of the anti-detachment component (34) is provided with multiple flat grooves (341) along the circumferential direction.

6. The tool eccentricity adjustment device according to claim 2, characterized in that, An inwardly recessed stress isolation groove (113) is formed between the first hole section (111) and the second hole section (112).

7. A cutting tool, comprising the eccentric adjustment device according to any one of claims 1-6, characterized in that, Multiple reference holes (11) are arranged sequentially along the circumference of the cutter body (1). The cutter body (1) forms a mounting groove (12) in the cutting face area of ​​the reference hole (11). The cutting tool (2) fits against the groove wall of the mounting groove (12).

8. A cutting tool according to claim 7, characterized in that, The mounting groove (12) includes a groove bottom surface (121) that contacts the end face of the blade (2) and a groove side surface (122) that contacts the side surface of the blade (2). The groove side surface (122) has an inwardly recessed partition groove (123) that divides the groove side surface (122) into two solid parts.

9. A cutting tool according to claim 8, characterized in that, The locking hole (31) is eccentric relative to the eccentric adjustment member (3) and points to the area of ​​the partition groove (123).

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