Small parts compound chamfering and deburring tool

Abstract

The utility model is suitable for deburring tool technical field, provide small spare composite chamfer deburring tool, including handle structure, handle structure is used for fixing tool on processing equipment, one end of handle structure is provided with the avoidance pole, the avoidance pole is used for avoiding the non -machining area of work piece in deburring operation, the avoidance pole is provided with the tool bit structure far from handle structure one end, handle structure, avoidance pole, tool bit structure are integrative setting, still include spare, the tool bit structure includes the tool head, one end of tool head is provided with the transition part, the transition part setting is in the intermediate position of tool head in avoidance pole, the outside of transition part is provided with the circular arc chamfer, the transition part is used for realizing the smooth link of avoidance pole and tool head, the circular arc chamfer of transition part realizes flexible transition in deburring process, reduces the possibility of hard friction with deep hole inner wall, hole chamfer, reduces the contact damage, protects work piece surface quality.

Description

Technical Field

[0001] This utility model relates to the field of deburring tool technology, and more specifically, it relates to a composite chamfering and deburring tool for small parts. Background Technology

[0002] In the field of precision machinery manufacturing, small parts have small structural dimensions and high precision requirements. The removal of edge burrs is a key process that affects the product assembly performance, reliability and service life. Burrs on small parts are mostly formed at machining cuts, stepped surfaces and joints of parts. If they are not completely removed, it will not only cause problems such as jamming and inaccurate positioning during assembly, but may also cause equipment wear, oil circuit blockage or short circuit in subsequent use due to burr falling off. As the core tool for removing burrs from small parts, the deburring knife's structural design directly determines the deburring efficiency, chamfering accuracy and tool compatibility.

[0003] During the machining of small parts, the head of the deburring tool needs to withstand high-frequency cutting impacts, and the connection and transition part between the head of the tool and the clearance rod is a key node for force transmission.

[0004] However, traditional deburring tools often use a simple straight-line chamfer structure at this transition point, which easily leads to stress concentration at the transition point. When repeatedly cutting burrs on small parts for a long time, cracks and chipping are likely to occur at the transition point, which seriously shortens the tool life and increases processing costs. A composite chamfering deburring tool for small parts is proposed to improve the existing problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a composite chamfering and deburring tool for small parts.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A composite chamfering and deburring tool for small parts includes a tool holder structure for fixing the tool to a processing device. One end of the tool holder structure is provided with a clearance rod, which is used to avoid the non-processing area of ​​the workpiece during deburring operations. The end of the clearance rod away from the tool holder structure is provided with a cutter head structure. The tool holder structure, clearance rod, and cutter head structure are integrally formed.

[0007] It also includes parts, the cutter head structure being used to deburr the parts.

[0008] The cutter head structure includes a cutter head, one end of which is provided with a transition portion. The transition portion is located at the middle position between the cutter head and the clearance rod. The outer side of the transition portion is provided with an arc-shaped chamfer. The transition portion is used to achieve a smooth connection between the clearance rod and the cutter head.

[0009] The present invention is further configured such that: the handle structure includes a handle portion, the handle portion is shaped as a rod, the outer wall of the handle portion is provided with a smooth cylindrical surface adapted for clamping, and one end of the handle portion is provided with a connecting portion, the connecting portion being shaped as a frustum.

[0010] The present invention is further configured such that: the diameter of the connecting part gradually decreases from one end near the handle to the end near the clearance rod; the connecting part is configured as a transition connection structure between the handle and the clearance rod; and the connecting part is used to achieve a stable connection between the handle and subsequent components.

[0011] The present invention is further configured such that: the cutter head structure also includes a chip removal groove, the chip removal groove is configured as a spiral structure, the spiral groove of the chip removal groove penetrates the end face and the outer side wall of the cutter head, and the chip removal groove extends spirally along the axial direction of the cutter head to the outer side wall of the air-avoiding rod.

[0012] The present invention is further configured such that the spiral direction of the chip removal groove is adapted to the working rotation direction of the tool, so as to guide the burr chips to be discharged along the spiral groove.

[0013] The present invention is further configured such that: the outer wall of the blade head is provided with a cutting edge, the cutting edge being used to contact the burrs on the workpiece and remove them by cutting.

[0014] The present invention is further configured such that: the part includes a part to be processed, a first processing part is provided on the side wall of the part to be processed, a second processing part is provided through the end of the part to be processed, and a chamfer is provided inside the second processing part.

[0015] In summary, this application includes at least one of the following beneficial technical effects: The integrated structure of the tool holder, clearance rod, and tool head eliminates weak points in the joints, significantly improving the overall structural strength and rigidity. It is less prone to deformation and breakage during processing, significantly extending tool life and reducing tool replacement costs. The rounded chamfer at the transition section achieves a flexible transition during deburring, reducing the possibility of hard friction with the inner wall of deep holes and the chamfer inside the holes, reducing contact damage, and protecting the surface quality of the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the composite chamfering and deburring tool for small and medium-sized parts according to this utility model.

[0017] Figure 2 for Figure 1 Isometric side view.

[0018] Figure 3 for Figure 1 A partial structural diagram.

[0019] Figure 4 for Figure 2 A schematic diagram of the planar structure.

[0020] Figure 5 This is a schematic diagram of the structure of the parts in this utility model.

[0021] Figure 6 for Figure 5 Isometric side view.

[0022] Explanation of reference numerals in the attached drawings: 1. Tool holder structure; 11. Tool holder section; 12. Connecting section; 2. Clearance bar; 3. Cutter head structure; 31. Cutter head; 32. Chip removal groove; 33. Transition section; 4. Parts; 41. Processing section; 42. First processing section; 43. Second processing section. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] Please see Figures 1-6 The present invention provides the following technical solution: Example 1, see Figure 1 A composite chamfering and deburring tool for small parts includes a tool holder structure 1, which is used to fix the tool on the processing equipment. One end of the tool holder structure 1 is provided with a clearance rod 2, which is used to avoid the non-processing area of ​​the workpiece during the deburring operation. The end of the clearance rod 2 away from the tool holder structure 1 is provided with a cutter head structure 3. The tool holder structure 1, clearance rod 2, and cutter head structure 3 are integrally formed.

[0026] See Figure 5 It also includes part 4, and the cutter head structure 3 is used to deburr part 4.

[0027] Among them, the tool holder structure 1, the air-avoiding rod 2, and the tool head structure 3 are integrally formed without splicing or weak connection points, which greatly improves the overall structural strength and rigidity. It is not easy to deform or break during processing, effectively ensuring the stability of processing accuracy. The cutting force can be evenly transmitted in the integral structure, reducing stress concentration, extending tool life, and reducing tool replacement costs caused by structural loosening or breakage.

[0028] The clearance rod 2 can avoid the non-machined area of ​​the workpiece during deburring operations, reducing the scraping and damage caused by the tool to the non-machined surface of the workpiece. It is especially suitable for machining scenarios with complex structures of part 4, ensuring the surface machining quality of the workpiece. The clearance rod 2 also provides guidance for the tool head structure 3, enabling it to reach the burr machining area and improving the targeting and accuracy of the machining.

[0029] Part 4 is the workpiece to be processed. The deburring process of part 4 can be performed through the overall structure of tool holder structure 1, clearance rod 2, and tool head structure 3.

[0030] See Figure 2 and Figure 3 The handle structure 1 includes a handle portion 11, which is shaped like a rod. The outer wall of the handle portion 11 is provided with a smooth cylindrical surface for clamping. One end of the handle portion 11 is provided with a connecting portion 12, which is shaped like a frustum.

[0031] See Figure 3 and Figure 4 The diameter of the connecting part 12 gradually decreases from the end near the handle part 11 to the end near the air-blocking rod 2. The connecting part 12 is set as a transition connection structure between the handle part 11 and the air-blocking rod 2. The connecting part 12 is used to realize a stable connection between the handle part 11 and the subsequent components.

[0032] The rod-shaped structure of the smooth cylindrical surface of the tool holder 11 can be adapted to the fixture of the processing equipment to ensure coaxiality during clamping and prevent the tool from shifting or shaking during processing, thereby ensuring the consistency of deburring operation accuracy. At the same time, the rod-shaped structure of the tool holder 11 has sufficient rigidity and can efficiently transmit cutting force, making the tool less prone to deformation when subjected to the cutting load of deburring, thus ensuring the stability of the processing process and the durability of the tool.

[0033] The frustum-shaped transition structure of the connecting part 12 achieves a smooth connection between the tool holder part 11 and the clearance rod 2, effectively reducing stress concentration at the connection of parts with different diameters, enhancing the fatigue resistance and fracture resistance of the overall structure, and extending the tool life. The frustum design with gradually changing diameter allows the cutting force to be transmitted more evenly from the tool holder part 11 to the clearance rod 2, avoiding excessive local stress and further improving the stability of the machining process.

[0034] See Figure 2 and Figure 3 The cutter head structure 3 includes a cutter head 31. A transition part 33 is provided at one end of the cutter head 31. The transition part 33 is located in the middle of the cutter head 31 and the clearance rod 2. An arc-shaped chamfer is provided on the outer side of the transition part 33. The transition part 33 is used to achieve a smooth connection between the clearance rod 2 and the cutter head 31.

[0035] See Figure 3The outer wall of the cutter head 31 is provided with a cutting edge, which is used to contact the burrs on the workpiece and remove them by cutting.

[0036] See Figure 2 and Figure 3 The cutter head structure 3 also includes a chip removal groove 32, which is configured as a spiral structure. The spiral groove of the chip removal groove 32 penetrates the end face and outer wall of the cutter head 31, and the chip removal groove 32 extends spirally along the axial direction of the cutter head 31 to the outer wall of the air-avoiding rod 2.

[0037] See Figure 2 and Figure 3 The spiral direction of the chip removal groove 32 is adapted to the working rotation direction of the tool to guide burrs and chips to be discharged along the spiral groove.

[0038] The cutter head 31 of the cutter head structure 3 is provided with a chip removal groove 32. The chip removal groove 32 extends along the axial direction of the cutter head 31 and penetrates the end face and outer wall of the cutter head 31. The groove wall of the chip removal groove 32 has a smooth curved transition. Its groove width is adapted to the cutting conditions of the tool. The groove depth extends radially inward along the cutter head 31 to form a chip-collecting space. The chip removal groove 32 is used to guide the burr chips generated during the deburring operation to the outside of the tool, avoiding the accumulation of chips in the contact area between the cutter head 31 and the workpiece, thereby reducing cutting resistance, reducing tool wear, and improving the surface quality of deburring. At the same time, the helical angle of the chip removal groove 32 is adapted to the rotation direction of the tool, and the helical direction is consistent with the rotation direction of the tool during operation. By setting the helical angle to be consistent with the rotation direction of the tool, the chip removal efficiency is enhanced.

[0039] The transition section 33 adopts a rounded chamfer. The rounded structure eliminates sharp transitions, reduces stress concentration, and lowers the possibility of tool chipping or wear due to excessive local stress during deburring, thus extending tool life. At the same time, the rounded chamfer enables a smooth transition during deburring, reducing the possibility of scraping between the tool and the non-machined area of ​​the workpiece, preventing scratches and damage to the workpiece surface. In addition, the rounded surface makes the cutting force distribution more uniform, reduces machining vibration, improves the stability of the deburring process, and ensures the consistency of burr removal and machining quality.

[0040] See Figure 5 and Figure 6 Part 4 includes a part to be processed 41, a first processing part 42 is provided on the side wall of the part to be processed 41, and a second processing part 43 is provided through the end of the part to be processed 41, and the interior of the second processing part 43 is provided with a chamfer.

[0041] Part 4 is the workpiece to be processed. The deburring process of part 4 can be performed through the overall structure of tool holder structure 1, clearance rod 2 and tool head structure 3. Part 4 also includes two deburring processing points: first processing part 42 and second processing part 43. The first processing part 42 is provided with a hole to be processed and a chamfer is provided inside the hole. The second processing part 43 is U-shaped and has a chamfer inside.

[0042] During the specific deburring process, the cutting edge at the bottom of the cutter head 31 has cutting capability and can penetrate deep into the hole of the first processing part 42 and the U-shaped structure of the second processing part 43 to directly contact and remove the burrs in these areas, thus achieving targeted deburring.

[0043] The rounded chamfer design of the transition section 33 can avoid hard friction with the inner wall of the deep hole and the chamfer inside the hole during the deburring process, and reduce contact damage through a flexible transition.

[0044] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A composite chamfering and deburring tool for small parts, characterized in that: The tool holder structure (1) is used to fix the tool on the processing equipment. One end of the tool holder structure (1) is provided with a clearance rod (2). The clearance rod (2) is used to avoid the non-processing area of ​​the workpiece during deburring operations. The end of the clearance rod (2) away from the tool holder structure (1) is provided with a cutter head structure (3). The tool holder structure (1), clearance rod (2), and cutter head structure (3) are integrally formed. It also includes part (4), the cutter head structure (3) is used to deburr part (4); The cutter head structure (3) includes a cutter head (31), one end of which is provided with a transition part (33). The transition part (33) is located at the middle position of the cutter head (31) and the clearance rod (2). The outer side of the transition part (33) is provided with an arc-shaped chamfer. The transition part (33) is used to achieve a smooth connection between the clearance rod (2) and the cutter head (31).

2. The composite chamfering and deburring tool for small parts according to claim 1, characterized in that: The handle structure (1) includes a handle portion (11), the handle portion (11) is shaped as a rod, the outer side wall of the handle portion (11) is provided with a smooth cylindrical surface adapted for clamping, and one end of the handle portion (11) is provided with a connecting portion (12), the connecting portion (12) is shaped as a frustum.

3. The composite chamfering and deburring tool for small parts according to claim 2, characterized in that: The diameter of the connecting part (12) gradually decreases from one end near the handle part (11) to the end near the air-blocking rod (2). The connecting part (12) is set as a transition connection structure between the handle part (11) and the air-blocking rod (2). The connecting part (12) is used to realize a stable connection between the handle part (11) and the subsequent components.

4. The composite chamfering and deburring tool for small parts according to claim 1, characterized in that: The cutter head structure (3) also includes a chip removal groove (32), which is configured as a spiral structure. The spiral groove of the chip removal groove (32) penetrates the end face and outer wall of the cutter head (31), and the chip removal groove (32) extends spirally along the axial direction of the cutter head (31) to the outer wall of the air-blocking rod (2).

5. The composite chamfering and deburring tool for small parts according to claim 4, characterized in that: The spiral direction of the chip removal groove (32) is adapted to the working rotation direction of the tool so as to guide the burr chips to be discharged along the spiral groove.

6. The composite chamfering and deburring tool for small parts according to claim 5, characterized in that: The outer wall of the cutter head (31) is provided with a cutting edge, which is used to contact the burrs on the workpiece and remove them by cutting.

7. The composite chamfering and deburring tool for small parts according to claim 1, characterized in that: The part (4) includes a part to be processed (41), a first processing part (42) is provided on the side wall of the part to be processed (41), and a second processing part (43) is provided through the end of the part to be processed (41), and the interior of the second processing part (43) is provided with a chamfer.

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