A milling cutter for hardware machining with a compensation type cutter head centering structure

Abstract

This invention relates to the field of milling technology and discloses a milling cutter for hardware processing with a compensating cutter head centering structure. The cutter includes a sleeve fitted outside a centering table. The bottom of the inner wall of the sleeve has a threaded groove for threaded connection with the machine tool spindle. Above the threaded groove is a first sliding groove. The inner wall of the first sliding groove has a retaining strip that engages with an annular groove. The retaining strips are symmetrically arranged. The outer wall of the sleeve has a second sliding groove. The inner wall of the second sliding groove has a sliding strip. A movable groove is formed between the first and second sliding grooves. A fixed groove is formed on the side wall of the movable groove. A sliding block is provided on the inner wall of the fixed groove. The sliding block slides along the space inside the movable groove and the fixed groove. The retaining strips of this invention adopt a symmetrical distribution design, which can simultaneously apply clamping force to the annular groove of the centering table from multiple directions. The end of the retaining strip facing the annular groove has an arc-shaped contour design, and the arc-shaped surface has a flexible buffer layer, ensuring both a tight fit with the annular groove and a certain degree of elastic deformation capability, providing a structural basis for dynamic error compensation.

Description

Technical Field

[0001] This invention relates to the field of milling technology, and more specifically to a milling cutter for hardware processing with a compensating cutter head centering structure. Background Technology

[0002] In metal parts processing, milling cutters are the core cutting tools for processes such as face milling, step machining, and cavity milling. They directly determine the dimensional accuracy, surface roughness, and production efficiency of the workpiece and are widely used in actual production fields such as machinery manufacturing, automotive parts, and hardware accessories. Most existing milling cutters for metal processing consist of core components such as the cutter body, centering table, and sleeve. The centering table is often a conical structure, installed in the mounting cavity on the inner wall of the sleeve. The sleeve is connected to the machine tool spindle via bolts through internal threaded grooves. The cutter body is inserted into the inner wall of the centering table and fixed by a locking sleeve.

[0003] In actual production, the centering table is positioned by using a T-slot on one side of the inner wall of the sleeve in conjunction with a retaining strip. Although the T-slot and retaining strip can complete the engagement and assembly of the centering table and the sleeve, it will cause uneven force on the centering table, which is very easy to produce radial eccentricity. Moreover, this rigid clamping method does not have self-compensation capability. During the machining process, the coaxiality error caused by machine tool spindle runout, workpiece clamping deviation and tool wear will continuously impact the retaining strip and cause it to be damaged. This will lead to milling cutter runout and increased cutting vibration, which will not only reduce the machining accuracy of the workpiece, but also accelerate tool wear and shorten its service life, making it difficult to meet the actual needs of precision machining of hardware. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a compensating cutter centering structure for metal processing milling cutters. This effectively solves the problem in existing technologies where the centering platform is fixed by a T-slot on one side of the sleeve inner wall and a retaining strip. This not only easily leads to uneven force on the centering platform and radial eccentricity, but also lacks self-adaptive compensation capability due to its rigid clamping. Furthermore, it is prone to damage to the retaining strip due to various coaxiality errors, causing milling cutter runout.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a milling cutter for metal processing with a compensating cutter head centering structure, comprising:

[0007] The centering platform is composed of a lower cone and an upper cone arranged sequentially from top to bottom. The bottom end of the lower cone is fixedly connected to the top end of the upper cone. An annular groove is provided at the connection between the upper and lower cones. The upper and lower cones are provided with slots for positioning the milling cutter shank.

[0008] A sleeve is fitted onto the outside of the centering table. The bottom end of the inner wall of the sleeve is provided with a threaded groove that is threaded to the machine tool spindle. A sliding groove is provided above the threaded groove. A retaining strip is provided on the inner wall of the sliding groove that engages with the annular groove. The retaining strips are arranged symmetrically.

[0009] The outer wall of the sleeve is provided with a second sliding groove, the inner wall of the second sliding groove is provided with a sliding strip, a movable groove is provided between the first sliding groove and the second sliding groove, a fixed groove is provided on the side wall of the movable groove, and a sliding block is provided on the inner wall of the fixed groove. The sliding block slides along the space inside the movable groove and the fixed groove.

[0010] Furthermore, two sets of locking components are symmetrically arranged on the inner wall of the second slide. One set of locking components consists of two symmetrically arranged blocks. The area of ​​the blocks located on the inner wall of the second slide has a slot, and a baffle is embedded on the side of the slot.

[0011] Furthermore, the outer wall of the slide bar adopts an edge design, and a push plate is provided on one side of the inner wall of the card bar. The size ratio of the push plate to the slide bar is 1:2.

[0012] Furthermore, the side of the sliding block near the slider is designed with an arc shape, and the width of the sliding block gradually increases from the position near the push plate to the position away from the push plate.

[0013] Furthermore, positioning blocks are fixedly connected to both sides of the slide bar, and an arc-shaped protrusion is provided on the side of the positioning block near the baffle, and a rubber layer is provided on the outer wall of the arc-shaped protrusion.

[0014] Furthermore, a V-shaped connecting rod is provided on the side of the sliding block away from the slot, and the connecting rod is connected to the side of the locking strip.

[0015] Furthermore, in the initial state, the locking strip is completely embedded in the inner wall of the slide groove, without interfering with the installation trajectory of the lower cone.

[0016] Furthermore, the side of the card slot near the card strip adopts a beveled design that fits into the connecting rod.

[0017] The technical solution provided by this invention has the following advantages compared with the prior art:

[0018] This invention features a curved rubber layer on the locking strip and a rubber layer on the positioning block that allow for slight deformation, adaptively compensating for errors, absorbing impacts, and reducing damage to the locking strip; a gradually wide sliding block design ensures smooth engagement and avoids rigid collisions; and a V-shaped connecting rod disperses impact forces, extending the service life of the locking strip in multiple ways.

[0019] This invention reduces milling cutter shank wobbling through pre-positioning of the centering step cone, precise positioning of the slot, and tight engagement of the retaining strip and the annular groove; symmetrical retaining strips prevent the centering platform from being eccentric, and the threaded connection of the screw groove reduces sleeve loosening, providing multiple safeguards to suppress milling cutter wobble; the buffer design of each component reduces vibration transmission, alleviates cutting vibration, and ensures stable milling cutter cutting.

[0020] This invention employs symmetrical clamping strips, which are synchronously driven by V-shaped connecting rods to apply uniform clamping force from both sides of the annular groove. This ensures that the centering platform is subjected to balanced force around its circumference, completely changing the unilateral force situation, avoiding radial eccentricity, and ensuring the coaxiality of the centering platform and the sleeve, thus laying the foundation for precise positioning of the milling cutter. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the centering platform structure according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the overall structure of the sleeve according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the overall sleeve structure according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the inner sleeve groove one and groove two in an embodiment of the present invention;

[0027] Figure 6 This is a schematic cross-sectional view of the sleeve structure according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the slider and sliding block structure according to an embodiment of the present invention.

[0029] The labels in the diagram represent: 1. Centering platform; 11. Upper cone; 12. Annular groove; 13. Lower cone; 14. Slot; 2. Sleeve; 21. Threaded groove; 22. Slide groove one; 23. Clamping strip; 24. Sliding strip; 241. Push plate; 242. Positioning block; 25. Slide groove two; 26. Stop block; 261. Clamping groove; 262. Baffle; 27. Fixed groove; 28. Movable groove; 29. ​​Sliding block; 291. Connecting rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] The present invention will be further described below with reference to embodiments.

[0032] Example:

[0033] Please see Figures 1-7 This invention provides a technical solution for a milling cutter with a compensating cutter head centering structure for hardware processing:

[0034] refer to Figure 1 , Figure 2 and Figure 3 The centering platform 1, serving as the direct positioning and bearing component of the milling cutter shank, adopts a combined frustum structure with upper and lower conical joints. From top to bottom, an upper frustum 11 and a lower frustum 13 are arranged sequentially, with the top of the lower frustum 13 fixedly connected to the bottom of the upper frustum 11, forming a smoothly transitioned stepped overall structure. This design facilitates guidance and mating with the inner wall of the sleeve 2 while also enhancing its structural strength. At the junction of the upper frustum 11 and the lower frustum 13, an annular groove 12 is provided around the outer wall of the centering platform 1. This groove 12 serves as the core structure for mating with the internal engaging components of the sleeve 2, its contour matching the engaging components to provide a stable mating foundation for subsequent symmetrical clamping. A slot 14 is axially penetrated at the center of the centering platform 1. This slot 14 is specifically designed to accommodate the milling cutter shank, achieving axial constraint and radial positioning of the milling cutter through a fitted inner wall design. This ensures the coaxiality of the shank and the centering platform 1 from the outset, reducing initial positioning deviations.

[0035] refer to Figure 3 , Figure 4 and Figure 5 The sleeve 2 is fitted onto the outside of the centering table 1. The bottom of its inner wall is provided with a threaded groove 21 that is threaded to the machine tool spindle. A sliding groove 22 is provided above the threaded groove 21. A retaining strip 23 is provided on the inner wall of the sliding groove 22 that engages with the annular groove 12. The retaining strip 23 is arranged symmetrically. At the same time, a movable groove 28 is provided between the sliding groove 22 and the sliding groove 25 on the outer wall of the sleeve 2. A fixed groove 27 is provided on the side wall of the movable groove 28. A sliding block 29 is provided on the inner wall of the fixed groove 27 that can slide along the inner space of the movable groove 28 and the fixed groove 27. A connecting rod 291 in a V-shape is provided on the side of the sliding block 29 away from the slot 14. The connecting rod 291 is connected to the side of the retaining strip 23.

[0036] First, the threaded groove 21 adopts a thread specification that matches the machine tool spindle. Compared with the traditional snap-fit ​​connection, the threaded connection can achieve a firm connection between the sleeve 2 and the machine tool spindle, reducing the loosening of the sleeve 2 caused by machining vibration and avoiding coaxiality errors caused by loose connection. At the same time, the threaded connection facilitates the disassembly and maintenance of the sleeve 2, reducing subsequent equipment maintenance costs. Second, the symmetrical arrangement of the retaining bars 23 is the core optimization point. Abandoning the traditional single-sided retaining bar 23 design, the symmetrically distributed retaining bars 23 can apply clamping force simultaneously from both sides of the annular groove 12, ensuring uniform force in the circumferential direction of the centering table 1, and completely solving the problem of uneven force and radial eccentricity of the centering table 1 caused by the traditional single-sided retaining bar 23. The problem is that it improves the clamping stability and avoids damage to a single clamping strip 23 due to overload. Secondly, the cooperation of the movable groove 28, the fixed groove 27 and the sliding block 29 provides stable guidance and support for the movement of the clamping strip 23, which not only realizes the extension and retraction of the clamping strip 23, but also restricts its movement trajectory to avoid loose engagement. The V-shaped connecting rod 291 can convert the linear movement of the sliding block 29 into the radial movement of the clamping strip 23, ensuring that the driving force is evenly transmitted and that the clamping strip 23 is synchronously and smoothly engaged into the annular groove 12. At the same time, the elastic buffering effect of the V-shaped structure can absorb part of the impact during engagement, reduce the rigid collision between the clamping strip 23 and the annular groove 12, and extend the service life of the clamping strip 23.

[0037] refer to Figure 6 and Figure 7 The outer wall of the sleeve 2 is provided with a second sliding groove 25, and the inner wall of the second sliding groove 25 is provided with a sliding strip 24. At the same time, two sets of locking parts are symmetrically arranged on the inner wall of the second sliding groove 25. Each set of locking parts consists of two symmetrically arranged blocks 26. The area of ​​the block 26 located on the inner wall of the second sliding groove 25 is provided with a slot 261, and a baffle 262 is embedded on the side of the slot 261. The outer wall of the sliding strip 24 adopts an edge design, and a push plate 241 is provided on one side of the inner wall of the sliding strip 24. The size of the push plate 241 is adapted to the size of the sliding strip 24 to ensure precise contact with the sliding block 29. Positioning blocks 242 are fixedly connected to both sides of the sliding strip 24. The side of the positioning block 242 near the baffle 262 is provided with an arc-shaped protrusion, and the outer wall of the arc-shaped protrusion is provided with a rubber layer. In addition, the side of the slot 261 near the locking strip 23 adopts an inclined surface design that fits with the connecting rod 291.

[0038] The edge design of the slider 24 abandons the traditional smooth outer wall, increasing the grip friction, making it easier for the operator to rotate and slide the slider 24, avoiding slippage, improving operational accuracy, and at the same time enhancing the structural strength of the slider 24 to prevent deformation after long-term use; the push plate 241 realizes the precise linkage between the slider 24 and the sliding block 29, ensuring that the slider 24 moves synchronously with the sliding block 29, thereby controlling the engagement and disengagement of the locking strip 23. The size adaptability ensures the effective transmission of the pushing force and avoids power loss or jamming; the positioning block 242 cooperates with the stop block 26, the slot 261, and the baffle 262 to realize the bidirectional positioning of the slider 24. In the initial state, it relies on... The positioning block 242 of the push plate 241 engages with the slot 261, fixing the slide bar 24 to prevent accidental movement. After engagement, the positioning block 242 on the other side engages with the corresponding slot 261, fixing the state of the clip 23. The arc-shaped protrusion and rubber layer of the positioning block 242 reduce rigid collisions, making it easy to engage with the slot 261, while also providing a buffer and anti-slip effect, preventing component wear and enhancing positioning stability. The inclined surface design of the slot 261 fits against the connecting rod 291, neither interfering with the movement of the connecting rod 291, nor limiting the connecting rod 291 after engagement through the baffle 262, improving the stability of the clip 23, and reducing frictional wear.

[0039] refer to Figure 6 and Figure 7 As the core transmission component connecting the slide bar 24 and the locking bar 23, the structure of the sliding block 29 directly affects the transmission efficiency and locking stability. This design adopts a dual special design: the side of the sliding block 29 near the slide bar 24 adopts an arc design, and the width of the sliding block 29 from the position near the push plate 241 to the position away from the push plate 241 adopts a gradient design that gradually increases from small to large.

[0040] The arc-shaped design allows for precise contact with the push plate 241, reducing the contact area and friction, ensuring smooth movement of the slider 24 and the slider block 29, avoiding jamming, and dispersing the force to prevent localized damage to the slider block 29. The width gradient design enables a smooth transition in the engagement of the locking strip 23. Initially, the push plate 241 is in contact with the narrow end of the slider block 29, requiring less pushing force and requiring less effort. As the slider 24 moves, the push plate 241 is in contact with the wide end, and the pushing force gradually increases, causing the locking strip 23 to slowly and smoothly engage in the annular groove 12, avoiding rigid collisions, reducing component wear, ensuring engagement accuracy, and improving the positioning stability of the centering table 1.

[0041] In its initial state, the retaining strip 23 is fully embedded in the inner wall of the slide groove 22, and will not interfere with the installation trajectory of the lower cone 13. Therefore, it does not impose too many restrictions on the installation angle of the annular groove 12. In traditional structures, the retaining strip 23 is usually in an extended state. When installing the centering platform 1, the angle needs to be adjusted to avoid the retaining strip 23, which increases the difficulty and time of operation. However, in this design, the retaining strip 23 is initially fully embedded in the slide groove 22, and the centering platform 1 can be directly inserted into the sleeve 2 without the need for deliberate angle adjustment. This greatly simplifies the installation process, reduces the difficulty of operation, and reduces the collision between the centering platform 1 and the retaining strip 23 during installation, avoiding damage to components and improving installation safety and efficiency.

[0042] In the initial state, the positioning block 242 on the side near the push plate 241 engages with the slot 261 of the stop block 26, fixing the slide bar 24. At this time, the retaining strip 23 is completely embedded in the inner wall of the slide groove 22, without affecting the installation of the centering table 1. After the centering table 1 is installed into the sleeve 2, the operator rotates the slide bar 24 until the positioning block 242 on the other side engages with the slot 261 of the corresponding stop block 26. When the slide bar 24 moves, the positioning block 242 pushes the baffle 262, so that it is in contact with the inclined surface of the connecting rod 291. The side of the baffle 262 near the slot 261 is exposed, and at this time the movement of the slot 261 and the connecting rod 291 does not interfere with each other, avoiding jamming. The slide bar 24 moves synchronously. As the push plate 241 moves, it engages with the narrow end of the sliding block 29, and then continues to push the sliding block 29 to slide along the movable groove 28 and the fixed groove 27. The sliding block 29 drives the V-shaped connecting rod 291, which in turn drives the symmetrical locking strip 23 to move synchronously, and finally locks into the annular groove 12 of the centering platform 1. The upper and lower ends of the locking strip 23 are designed with arcs and the arc surfaces are provided with rubber layers. After being fully embedded in the annular groove 12, they achieve a tight fit. At the same time, the positioning block 242 on the other side engages with the locking groove 261 to complete the locking and positioning. In addition, the positioning block 242 pushes the baffle 262 to fit tightly with the inclined surface of the connecting rod 291, further ensuring the positioning effect and preventing the locking strip 23 from loosening.

[0043] The centering table 1 can be clamped and fixed simply by rotating the slide bar 24, without complicated steps, thus improving operational efficiency. The movements are coordinated and consistent, with the slide bar 24, push plate 241, sliding block 29, connecting rod 291, and clamping bar 23 moving synchronously, ensuring that the clamping bar 23 is accurately and smoothly engaged in the annular groove 12, avoiding deviation. The radial positioning of the centering table 1 is achieved by the clamping bar 23 engaging with the annular groove 12, and the slide bar 24 is fixed by the engagement of the positioning block 242 with the clamping groove 261, ensuring structural stability during the processing. The rubber layer of the clamping bar 23 and the positioning block 242, as well as the elastic buffer of the connecting rod 291, reduce rigid collisions and wear of components, extending the service life of the overall structure.

[0044] The existing technology uses a single-sided clamping strip 23, which causes the centering table 1 to be subjected to force on only one side, easily resulting in radial eccentricity and causing milling cutter positioning deviation. This design uses symmetrical clamping strips 23, which are synchronously transmitted through a V-shaped connecting rod 291 to apply uniform clamping force from both sides of the annular groove 12, so that the centering table 1 is subjected to balanced force around its circumference, completely changing the one-sided force situation, avoiding radial eccentricity, ensuring the coaxiality of the centering table 1 and the sleeve 2, and laying the foundation for precise positioning of the milling cutter.

[0045] Traditional rigid clamping lacks cushioning, and even slight coaxiality errors can impact the clamping strip 23, causing wear and deformation. In this design, the curved rubber layer of the clamping strip 23 and the rubber layer of the positioning block 242 can achieve slight deformation, adaptively compensating for errors and absorbing impacts to reduce damage to the clamping strip 23; the gradually changing width design of the sliding block 29 ensures smooth engagement and avoids rigid collisions; the V-shaped connecting rod 291 disperses impact force, extending the service life of the clamping strip 23 in multiple ways.

[0046] The core reasons for milling cutter runout and vibration are inaccurate positioning of the centering table 1, loose or uneven force on the retaining strip 23. This design reduces milling cutter shank wobbling by using the stepped cone pre-positioning of the centering table 1, precise positioning of the slot 14, and tight engagement of the retaining strip 23 with the annular groove 12; symmetrical retaining strip 23 prevents the centering table 1 from being eccentric, and the threaded connection of the threaded groove 21 reduces the looseness of the sleeve 2, providing multiple safeguards to suppress milling cutter runout; the buffer design of each component reduces vibration transmission, alleviates cutting vibration, and ensures stable milling cutter cutting.

[0047] Milling cutter runout and vibration are the main causes of low machining accuracy and rapid tool wear. This design addresses these core issues, enabling precise milling cutter positioning, stable cutting, and more accurate cutting paths. This improves the dimensional accuracy and surface finish of precision metal machining, meeting stringent requirements. Simultaneously, it reduces abnormal tool friction and impact, lowers wear rates, extends tool life, and reduces machining costs.

[0048] The locking strip 23 is initially embedded in the slide groove 22, simplifying the installation process of the centering table 1, eliminating the need to adjust the angle and saving time; the edge design of the slide strip 24 makes it easy to hold and operate, and only the rotation of the slide strip 24 is needed to complete the locking and fixing, improving the efficiency of processing preparation and adapting to the needs of rapid installation and positioning in mass production.

[0049] The specifications of the screw groove 21 can be adjusted according to the machine tool spindle, and the size of the slot hole 14 can be adapted to different milling cutter holders, making the structure compatible with a variety of machine tools and milling cutters, reducing the equipment investment cost for enterprises; the stepped cone structure of the centering table 1 is adapted to different specifications of sleeve 2, expanding the application range.

[0050] The operation process is simple, and ordinary operators can get started after simple training, reducing training costs; the locking strip 23 is initially embedded in the slide groove 22 to avoid scratching the operator during installation; the positioning block 242 engages with the slot 261 to prevent the slide strip 24 from moving accidentally, reducing safety hazards; the rubber layer reduces collision noise and improves the operating environment.

[0051] In traditional structures, the combined effect of wear on multiple structures can easily lead to error accumulation. This design reduces component wear and loosening through multiple positioning and buffer protection, avoids error accumulation, and ensures the accuracy and stability of long-term batch processing.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A milling cutter for hardware machining with a compensating cutter head centering structure, characterized in that, include: Centering platform (1), the centering platform (1) is composed of a lower cone (13) and an upper cone (11) arranged sequentially from top to bottom. The bottom end of the lower cone (13) is fixedly connected to the top end of the upper cone (11). An annular groove (12) is provided at the connection between the upper cone (11) and the lower cone (13). The upper cone (11) and the lower cone (13) are provided with slots (14) for positioning the milling cutter shank. Sleeve (2), sleeve (2) is sleeved on the outside of centering table (1), the bottom end of the inner wall of sleeve (2) is provided with a threaded groove (21) for threaded connection with machine tool spindle, a sliding groove (22) is provided above the threaded groove (21), and a retaining strip (23) is provided on the inner wall of the sliding groove (22) for engaging with the annular groove (12), the retaining strip (23) is symmetrically arranged; The outer wall of the sleeve (2) is provided with a second sliding groove (25), and the inner wall of the second sliding groove (25) is provided with a sliding strip (24). A movable groove (28) is provided between the first sliding groove (22) and the second sliding groove (25). A fixed groove (27) is provided on the side wall of the movable groove (28). A sliding block (29) is provided on the inner wall of the fixed groove (27). The sliding block (29) slides along the space inside the movable groove (28) and the fixed groove (27).

2. The milling cutter for hardware processing with a compensating cutter head centering structure according to claim 1, characterized in that: Two sets of locking components are symmetrically arranged on the inner wall of the slide groove (25). One set of locking components consists of two symmetrically arranged blocks (26). The blocks (26) are provided with a slot (261) in the area of ​​the inner wall of the slide groove (25). A baffle (262) is embedded on the side of the slot (261).

3. The milling cutter for hardware processing with a compensating cutter head centering structure according to claim 2, characterized in that: The outer wall of the slide bar (24) adopts a ridge design, and a push plate (241) is provided on one side of the inner wall of the card bar (23). The size ratio of the push plate (241) to the size of the slide bar (24) is 1:

2.

4. The milling cutter for hardware processing with a compensating cutter head centering structure according to claim 3, characterized in that: The sliding block (29) has an arc-shaped design on the side near the slider (24), and the width of the sliding block (29) gradually increases from the position near the push plate (241) to the position away from the push plate (241).

5. A milling cutter for hardware processing with a compensating cutter head centering structure according to claim 4, characterized in that: Positioning blocks (242) are fixedly connected to both sides of the slide bar (24). An arc-shaped protrusion is provided on the side of the positioning block (242) near the baffle (262), and a rubber layer is provided on the outer wall of the arc-shaped protrusion.

6. A milling cutter for metal processing with a compensating cutter head centering structure according to claim 2, characterized in that: The sliding block (29) is provided with a V-shaped connecting rod (291) on the side away from the slot (14), and the connecting rod (291) is connected to the side of the card strip (23).

7. A milling cutter for hardware processing with a compensating cutter head centering structure according to claim 2, characterized in that: In the initial state, the card strip (23) is completely embedded in the inner wall of the slide groove (22) and does not interfere with the installation trajectory of the lower cone (13).

8. A milling cutter for hardware processing with a compensating cutter head centering structure according to claim 6, characterized in that: The side of the card slot (261) near the card strip (23) is designed with a bevel that fits into the connecting rod (291).

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