Machining tool for complete set of lugs

Abstract

The utility model discloses a machining tool for a complete set of lug pieces, the complete set of lug pieces comprises at least two lug pieces arranged in parallel, each lug piece is provided with a lug piece hole, a plurality of lug piece holes are coaxial, the machining tool comprises a supporting section, a cutting edge and a tool handle which are sequentially arranged from front to back, and when the thickness of a single lug piece is X, X is a positive integer. When the distance between the two lugs is Y, the length of the supporting section is not smaller than X + Y, and the length of the cutting edge is not smaller than 2X + Y. And the dynamic stability in the machining process is ensured through strict geometric constraints. The continuous contact of the supporting section across the lug spacing effectively eliminates the supporting blank of a traditional cutter in a transition area, and overhanging vibration of the cutter is prevented; and the length of the cutting edge forms a machining and supporting overlapping area, so that the previous hole always provides an axial reference for the next hole, the abrupt change of cutting force is inhibited, the automatic transmission of the position precision among the holes is also realized, and the problem of coaxiality accumulative errors in the machining process of the thin-wall lug group is fundamentally solved.

Description

Technical Field

[0001] This utility model relates to a machining tool for a set of ear pieces, belonging to the field of machining tool technology. Background Technology

[0002] In the field of machining, precision machining of sets of thin lugs with strict coaxiality requirements has always been a highly challenging technological problem. These parts typically consist of at least two parallel thin-walled lugs, and the corresponding holes on each lug must not only ensure their own dimensional accuracy but also meet strict coaxiality requirements. Due to the extremely thin lug thickness, large spacing, and long tool overhang, these parts suffer from the following problems: the thin-walled lugs lack rigidity and are prone to deformation under cutting forces, easily leading to out-of-tolerance hole diameters; tools with high length-to-diameter ratios exhibit significant chatter during machining, making it difficult to guarantee hole wall roughness; and the coaxiality of the two opposing holes relies on multiple clamping and correction operations, resulting in low efficiency and poor consistency.

[0003] Existing solutions primarily employ two process routes: 1. While machining each lug individually can guarantee the accuracy of a single hole, the cumulative error from multiple clamping and positioning makes it difficult to ensure coaxiality between holes. 2. When machining multiple lug holes at once using conventional long-shank tools, the lack of effective intermediate support causes significant tool vibration when machining the distal lugs, leading to hole distortion and dimensional deviations. This is especially problematic when machining thin-walled lugs, where fluctuations in cutting force can easily cause workpiece deformation, further exacerbating coaxiality deviations. Utility Model Content

[0004] The purpose of this utility model is to provide a machining tool for a complete set of ear pieces, which has multi-segment support and dynamic centering functions, and solves the problems of vibration and geometric tolerance in deep and long hole machining through structural innovation, so as to achieve high coaxiality and high precision one-time forming machining.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A machining tool for a set of lugs, the set of lugs including at least two parallel lugs, each lug having a lug hole, the lug holes being coaxial, the machining tool including a support section, a cutting edge and a tool holder arranged sequentially from front to back, when the thickness of a single lug is X and the distance between two lugs is Y, the length of the support section is not less than X+Y, and the length of the cutting edge is not less than 2X+Y.

[0007] Alternatively, the outer circle diameter of the support segment may be smaller than that of the cutting edge.

[0008] Alternatively, the outer circle, cutting edge, and tool holder of the support section can be coaxial.

[0009] Alternatively, the support section may have a circular cross-section, and the diameter of the support section may be smaller than the cutting edge.

[0010] Alternatively, the cutting edge may be provided with a cutting edge guide section at its front end.

[0011] Alternatively, the cutting edge guide section can be 8-12°.

[0012] Alternatively, the diameter of the support section may be no greater than the diameter of the bottom hole of the workpiece.

[0013] Alternatively, the diameter of the support section is the diameter of the bottom hole of the workpiece, with a tolerance of -0.03 to -0.05.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. The tool for machining a set of lugs provided by this utility model ensures dynamic stability during the machining process through strict geometric constraints. The continuous contact of the support section across the lug spacing effectively eliminates the support gap in the transition area of ​​traditional tools, preventing tool overhang vibration; the length of the cutting edge forms an overlap area between machining and support, ensuring that the previous hole always provides an axial reference for the next hole, which not only suppresses sudden changes in cutting force but also realizes the automatic transfer of positional accuracy between holes, fundamentally solving the problem of coaxiality accumulation error in the machining of thin-walled lug sets.

[0016] 2. The present invention provides a machining tool for a set of lugs, wherein the support section forms a gap with the bottom hole for positioning, the cutting edge guide section achieves low-stress cutting, and the support section completes hole shape calibration after equal diameter. Through the diameter gradient and coaxial design of the entire section, the rationality of allowance removal is ensured, and a closed-loop precision control chain of pre-support, cutting, and re-support is formed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cutting tool.

[0018] Figure 2 This is a schematic diagram of the workpiece's structure.

[0019] Figure 3 This is a schematic diagram of the hole after machining.

[0020] Figure 4 This is a schematic diagram of the hole before machining.

[0021] The markings in the diagram are: 1-support section, 2-cutting edge, 3-tool holder, 4-edge guide section. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] A machining tool for a set of lugs, the set of lugs comprising at least two parallel lugs, each lug having a lug hole, the lug holes being coaxial, such as... Figure 1-4 As shown, the machining tool includes a support section 1, a cutting edge 2, and a tool holder 3 arranged sequentially from front to back, and the outer diameter of the support section 1 is smaller than that of the cutting edge 2.

[0025] In this design, support segment 1 makes initial contact with the bottom hole before the cutting edge 2 enters the machining area, providing radial support, suppressing tool vibration, and guiding tool centering to ensure that the machining trajectory of subsequent cutting edge 2 is coaxial with the previous hole. The length of support segment 1 is not less than X+Y, ensuring that when the tool is machining the next lug hole, support segment 1 can simultaneously maintain contact with the bottom hole of the previous lug, forming continuous support across the lug spacing and avoiding support gaps during machining. Cutting edge 2 completes the final forming of the precision hole, ensuring the hole diameter. The length of cutting edge 2 is not less than 2X+Y, ensuring that when machining the previous lug hole, cutting edge 2 still has sufficient length to remain within the next lug hole, forming dynamic support, achieving a smooth transition in the machining process, and avoiding sudden changes in cutting force. This solution, through careful design of length parameters, ensures that there are always at least two contact points during machining, effectively controlling tool runout, significantly improving the positional accuracy between holes, enabling continuous machining of multiple lug holes, and avoiding the accumulation of errors caused by repeated positioning.

[0026] In another specific implementation, the outer diameter of the support segment 1 is smaller than that of the cutting edge 2. The diameter of the support segment 1 is slightly smaller than that of the bottom hole to ensure smooth insertion into the bottom hole, while providing initial centering through a moderate interference fit.

[0027] In another specific implementation, the circumcircle of the support section 1, the cutting edge 2, and the tool holder 3 are coaxial. The cutting force is transmitted linearly to the tool holder 3 along the coaxial structure, avoiding additional bending moments caused by eccentric loads. The rotation centers of the support section 1 and the cutting edge 2 coincide, ensuring that the deviation between the machined hole axis and the theoretical axis is minimized.

[0028] In another specific embodiment, the support segment 1 has a circular cross-section, and the diameter of the support segment 1 is smaller than that of the cutting edge 2. The circular cross-section provides a uniform radial support force distribution, effectively suppressing tool vibration and ensuring machining stability.

[0029] In another specific implementation, the cutting edge 2 is provided with a cutting edge guide section 4 at its front end. The guide section forms a progressive cutting transition, effectively reducing the impact load during initial entry and preventing deformation of thin-walled parts due to excessive instantaneous force.

[0030] In another specific implementation, the cutting edge guide section 4 is 8-12°. This angle provides sufficient cutting guiding force to ensure that the tool smoothly enters the workpiece, while avoiding the problem of radial force overload caused by an excessively large angle.

[0031] In another specific implementation, the diameter of the support section 1 is no larger than the diameter of the workpiece bottom hole. This ensures that the support section 1 can smoothly enter the pre-drilled hole and provide immediate radial support, effectively suppressing vibration deviation of the tool in the initial stage.

[0032] In another specific implementation, the diameter of the support section 1 is the diameter of the workpiece bottom hole, with a tolerance of -0.03 to -0.05. By strictly controlling the fit clearance between the support section 1 and the bottom hole, frictional damage caused by interference fit is avoided, and support failure caused by excessive clearance is prevented, thus forming a stable dynamic reference during the processing.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. The present utility model extends to any new features or combinations disclosed in this specification, and any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model. It is obvious to those skilled in the art that the present utility model is not limited to the details of the above exemplary embodiments, and that detailed technical features not disclosed in this embodiment, such as specific structures, are all prior art and can be obtained by those skilled in the art from the prior art; the connection method can be a fixed connection, a detachable connection, or an integral part; it can be a fixed connection, a movable connection, or a hinged connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific manner of the above terms in the embodiments of the present utility model according to the specific circumstances, and the present disclosure does not specifically limit this aspect.

Claims

1. A machining tool for a set of ear plates, the set of ear plates comprising at least two parallel ear plates, each ear plate having an ear plate hole, the multiple ear plate holes being coaxial, characterized in that: The machining tool includes a support section (1), a cutting edge (2), and a tool holder (3) arranged sequentially from front to back. When the thickness of a single lug is X and the distance between two lugs is Y, the length of the support section (1) is not less than X+Y, and the length of the cutting edge (2) is not less than 2X+Y.

2. A tool for processing a grommet according to claim 1, characterized in that: The outer circle diameter of the support section (1) is smaller than that of the cutting edge (2).

3. A tool for processing a grommet according to claim 2, wherein: The outer circle of the support section (1), the cutting edge (2), and the tool holder (3) are coaxial.

4. A tool for processing a kit of ear pieces as claimed in claim 3, characterized in that: The cross-section of the support section (1) is circular, and the diameter of the support section (1) is smaller than that of the cutting edge (2).

5. The tool for processing grommets according to claim 1, characterized in that: The cutting edge (2) is provided with a cutting edge guide section (4) at its front end.

6. A tool for processing a kit of ear pieces as claimed in claim 5, characterised in that: The cutting edge guide section (4) is 8-12°.

7. The tool for processing grommets according to claim 1, characterized in that: The diameter of the support section (1) is not greater than the diameter of the bottom hole of the workpiece.

8. A tool for processing a grommet according to claim 7, wherein: The diameter of the support section (1) is the diameter of the bottom hole of the workpiece, with a tolerance of -0.03 to -0.05.

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