Indexable pcd boring tool for high speed machining
Patent Information
- Application Number
- CN202522465786.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-11-20
AI Technical Summary
传统加工内孔有光洁度范围时，需先铰孔再镗刀破坏光洁度，通常需使用2把刀具分序加工，不仅增加了工序步骤，还降低了加工效率，且对于孔壁高粗糙度范围控制及高速加工的适配性差，难以满足高效、高精度的加工需求，同时，传统可转位 PCD 镗刀在精镗刃和破坏刃多为一体式设置，在精镗刃或破坏刃磨损后需整体拆卸更换，增加了成本并延长了停机时间，另外部分可转位PCD镗刀虽有调节设计，但其通常仅能进行单一刀刃的调节，而且调节操作相对繁琐，难以满足高速加工下的精准控制需求
本实用新型通过设置定位调节组件，利用调节螺杆推动调节块沿导向槽孔滑动，借助调节块与支撑座一、支撑座二之间的倾斜面配合，能够精确调节精镗刃和破坏刃的径向位置，满足不同加工尺寸的需求；同时限位组件一通过调节丝杆带动限位块抵紧支撑座，配合限位组件二中限位螺栓对调节丝杆的锁定，可有效防止高速加工时支撑座发生位移，提升刀具的稳定性，且支撑座上的刻度片设置便于直观读取调节距离，而卡块的多规格正六边形槽设计增强了操作便利性，另外倾斜面上的耐磨层设置则延长了部件使用寿命，确保长期使用中的调节精度，整体结构设计合理，实现了精镗刃和破坏刃的便捷调节与稳固限位，并能够在精镗刃和破坏刃过度磨损后单独对其进行拆装更换作业。
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Figure CN224846686U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal cutting tool technology, and in particular to an indexable PCD boring tool for high-speed machining. Background Technology
[0002] In the field of high-speed internal hole machining, especially in scenarios with high requirements for hole wall roughness and machining efficiency, traditional machining processes and tools have many shortcomings. When machining internal holes with a certain surface finish, traditional methods require reaming first and then boring to destroy the surface finish. This usually requires two tools to process in sequence, which not only increases the number of steps but also reduces machining efficiency. Furthermore, they have poor adaptability to the control of high hole wall roughness ranges and high-speed machining, making it difficult to meet the requirements of high-efficiency and high-precision machining. At the same time, traditional indexable PCD boring tools often have the fine boring edge and the breaking edge as a single unit. After the fine boring edge or the breaking edge wears out, the entire unit needs to be disassembled and replaced, increasing costs and extending downtime. In addition, although some indexable PCD boring tools have adjustment designs, they usually only allow adjustment of a single cutting edge, and the adjustment operation is relatively cumbersome, making it difficult to meet the precise control requirements of high-speed machining.
[0003] Therefore, this utility model proposes an indexable PCD boring tool for high-speed machining to solve the above problems.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings mentioned in the background section by proposing a high-speed machining indexable PCD boring tool.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-speed machining indexable PCD boring tool, including a mounting base, a tool shaft, a fine boring edge, a breaking edge, two adjusting blocks, a positioning adjustment component, a first limiting component, a second limiting component, a first support base, and a second support base; The cutter shaft is installed on the rear side of the mounting base. The mounting base has two mounting slots. Positioning slot one and positioning slot two are respectively provided in the two mounting slots along the radial direction of the cutter shaft. Support base one and support base two are slidably installed in positioning slot one and positioning slot two, respectively. The fine boring tool and the breaking tool are respectively fixedly installed on support base one and support base two. The mounting base has two guide slots, and two adjusting blocks are slidably installed in the corresponding guide slots. The two adjusting blocks are inclined on the side that is close to the support base one and the support base two, and the support base one and the support base two slide in contact with the corresponding adjusting blocks through the inclined surface. The positioning adjustment component is set in the two guide slots and connected to the two adjusting blocks. The mounting base has two limiting holes. The first limiting component is disposed in the two limiting holes and connected to the first support base and the second support base. The second limiting component is disposed in the two mounting slots and connected to the two first limiting components.
[0007] Preferably, the positioning adjustment assembly includes two adjusting screws, each threaded into one of the two guide slots, and the ends of the two adjusting screws that are close to each other are rotatably connected to the corresponding adjusting blocks.
[0008] Preferably, the cross-section of the guide slot near the axis of the mounting base is polygonal, and the guide slot away from the axis of the mounting base is cylindrical and has an internal thread adapted to the adjusting screw.
[0009] Preferably, the limiting component one includes two limiting blocks and two adjusting screws. Adjusting screws are threaded into both limiting holes. Limiting blocks are rotatably installed at the ends of the two adjusting screws that are close to each other. The two limiting blocks abut against the sides of the support base one and the support base two that are far apart from each other.
[0010] Preferably, the sides of the two limiting blocks that are close to each other are both roughened.
[0011] Preferably, the second limiting component includes two limiting bolts, each of which is rotatably installed in one of the two mounting slots, and the ends of the two limiting bolts that are close to each other are radially abutted against the corresponding adjusting screws.
[0012] Preferably, scale plates are fixedly installed on the sides of the support base one and the support base two that are far apart from each other.
[0013] Preferably, each of the two adjusting screws and the two adjusting lead screws has a locking block fixedly installed at the end away from the axis of the mounting base. The locking block has multiple hexagonal slots that are interconnected and located on the same axis.
[0014] Preferably, the inclined surface of the adjusting block and the inclined surfaces of support base one and support base two are coated with a wear-resistant layer.
[0015] The beneficial effects of this utility model are: This invention features a positioning and adjustment assembly. An adjusting screw drives an adjusting block to slide along a guide slot. The inclined surfaces between the adjusting block and support bases one and two allow for precise adjustment of the radial position of the boring and destructive cutting edges, meeting the needs of different machining dimensions. Simultaneously, the limiting assembly one, via an adjusting screw, drives a limiting block against the support base. Combined with the locking bolt in the limiting assembly two, this effectively prevents displacement of the support base during high-speed machining, improving tool stability. The scale plates on the support base facilitate intuitive reading of the adjustment distance, while the multi-specification hexagonal slot design of the locking block enhances operational convenience. Furthermore, the wear-resistant layer on the inclined surface extends the service life of the components, ensuring adjustment accuracy over long-term use. The overall structural design is reasonable, achieving convenient adjustment and stable limiting of the boring and destructive cutting edges. It also allows for individual disassembly and replacement of the boring and destructive cutting edges after excessive wear. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional structural diagram of a high-speed machining indexable PCD boring tool proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 for Figure 2 Front view structural diagram; Figure 4 for Figure 2 A schematic diagram of the structure of part A; Figure 5 This is a schematic diagram of the structure of the support base, precision boring tool, scale plate, adjusting screw, limiting block, adjusting screw, locking block and limiting bolt, and adjusting block portion proposed in this utility model; Figure 6 This is a schematic diagram of the structure of the support base, the breaking blade, the adjusting block, the adjusting screw, the adjusting lead screw, the limiting block, the limiting bolt, and the locking block with scale plate proposed in this utility model; Figure 7 This is a cross-sectional structural diagram of the mounting base portion proposed in this utility model; Figure 8 This is a schematic diagram of the adjusting screw and locking block proposed in this utility model.
[0018] In the diagram: 1. Mounting base; 101. Mounting groove; 102. Positioning groove one; 103. Positioning groove two; 104. Limiting hole; 105. Guide groove hole; 11. Tool shaft; 2. Fine boring tool; 21. Support base one; 3. Destructive tool; 31. Support base two; 4. Adjusting block; 41. Adjusting screw; 5. Limiting block; 51. Adjusting lead screw; 6. Locking block; 7. Limiting bolt; 8. Scale plate. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0020] Reference Figure 1-8 A high-speed machining indexable PCD boring tool includes a mounting base 1, a tool shaft 11, a fine boring edge 2, a breaking edge 3, two adjusting blocks 4, a support base one 21 and a support base two 31; The cutter shaft 11 is installed on the rear side of the mounting base 1. The mounting base 1 has two mounting slots 101. The two mounting slots 101 are respectively provided with positioning slot 102 and positioning slot 2 103 along the radial direction of the cutter shaft 11. Support base 1 21 and support base 2 31 are slidably installed in positioning slot 1 102 and positioning slot 2 103, respectively. The fine boring tool 2 and the breaking tool 3 are respectively fixedly installed on support base 1 21 and support base 2 31. The mounting base 1 has two guide slots 105, and two adjusting blocks 4 are slidably installed in the corresponding guide slots 105. The two adjusting blocks 4 are inclined on the sides of the support base 21 and the support base 31 that are close to each other. The support base 21 and the support base 31 slide in contact with the corresponding adjusting blocks 4 through their inclined surfaces. To effectively reduce frictional wear between the adjusting blocks 4 and the support bases 21 and 31, extend the service life of the components, and ensure that the fitting accuracy of the inclined surfaces does not decrease due to wear during long-term adjustment, thus maintaining the stability and accuracy of the position adjustment of the boring tool 2 and the breaking tool 3, the inclined surfaces of the adjusting blocks 4 and the inclined surfaces of the support bases 21 and 31 are coated with a wear-resistant layer. Adjusting screws 41 are threaded into both guide slots 105. The two adjusting screws 41 are slidably installed in the sides of the guide slots 105 that are close to each other. Each end is rotatably connected to the corresponding adjusting block 4. The position of the adjusting block 4 can be adjusted by rotating the adjusting screw 41. The position of the supporting base 21 and the supporting base 31 can be adjusted by the interaction between the inclined surfaces of the supporting base 21, the supporting base 31 and the adjusting block 4. In this way, the distance between the ends of the fine boring tool 2 and the breaking tool 3 and the outer periphery of the mounting base 1 can be adjusted respectively. At the same time, in order to restrict the circumferential rotation of the adjusting block 4 and ensure that the adjusting block 4 can only slide along the axial direction of the guide slot 105, so as to avoid affecting the adjustment accuracy of the supporting base 21 and the supporting base 31 due to the rotation of the adjusting block 4, the cross section of the guide slot 105 near the axis of the mounting base 1 is polygonal, and the guide slot 105 away from the axis of the mounting base 1 is cylindrical and has an internal thread adapted to the adjusting screw 41. The mounting base 1 has two limiting holes 104, and an adjusting screw 51 is threaded into each of the two limiting holes 104. A limiting block 5 is rotatably installed at the end of the two adjusting screws 51 that is close to each other. The two limiting blocks 5 respectively abut against the side of the support base 1 21 and the support base 2 31 that is far from each other. By rotating the adjusting screw 51, the limiting blocks 5 can be pushed to press and limit the support base 1 21 and the support base 2 31, preventing the support base 1 21 and the support base 2 31 from being displaced due to vibration during high-speed machining, and further improving the installation stability of the precision boring tool 2 and the breaking tool 3. In order to increase the friction between the support base 1 21 and the support base 2 31 and further enhance the limiting effect, and to avoid the limiting loosening due to friction wear during long-term use, the side of the two limiting blocks 5 that is close to each other is roughened. Limiting bolts 7 are rotatably installed in both mounting slots 101. The ends of the two limiting bolts 7 that are close to each other are radially abutted against the corresponding adjusting screws 51. By tightening the limiting bolts 7, the circumferential rotation of the adjusting screws 51 can be locked, preventing the adjusting screws 51 from rotating on their own due to vibration during the machining process and changing the position of the limiting block 5. This ensures that the limiting state of the limiting screws is always stable and reliable, and avoids the position of the fine boring tool 2 and the destructive tool 3 from shifting due to the failure of the limiting, thus ensuring the cutting accuracy and machining quality during high-speed machining.
[0021] In this embodiment, in order to intuitively display the adjustment distance between the precision boring blade 2 and the breaking blade 3, so that the operator can quickly read the displacement value during the adjustment process, achieve precise control of the position of the precision boring blade 2 and the breaking blade 3, and reduce the time cost of repeated debugging, scale plates 8 are fixedly installed on the side of the support base 1 21 and the support base 2 31 that are far apart from each other.
[0022] In this embodiment, in order to facilitate the adjustment of the adjusting screw 41 and the adjusting lead screw 51 using different types of Allen wrenches, and to improve tool compatibility and ease of operation, a locking block 6 is fixedly installed at the end of each of the two adjusting screws 41 and the two adjusting lead screws 51 away from the axis of the mounting base 1. The locking block 6 has multiple hexagonal slots that are interconnected and located on the same axis.
[0023] Working principle: In use, firstly, select the appropriate precision boring tool 2 and breaking tool 3 according to the processing requirements, and fix them to the support base 1 21 and support base 2 31 respectively with bolts. Then, use the internal hexagonal wrench that matches the regular hexagonal groove on the locking block 6 to rotate the adjusting screw 41 to drive the adjusting block 4 to slide along the guide slot 105. Since the adjusting block 4 is in contact with the inclined surfaces of the support base 1 21 and support base 2 31, the axial movement of the adjusting block 4 will cause the support base 1 21 and support base 2 31 to slide along the positioning slot 1 102 and positioning slot 2 103. At this time, the operator can read the extension distance of the precision boring tool 2 and breaking tool 3 in real time through the scale plate 8 on the side of the support base 1 21 and support base 2 31 until the target processing size is adjusted.
[0024] After adjustment, rotate the adjusting screw 51 to push the limiting block 5 towards the support seat, so that the rough surfaces of the two limiting blocks 5 are in close contact with the support seat 21 and the support seat 31 respectively. Then tighten the limiting bolt 7 so that its end radially presses against the adjusting screw 51, thereby locking the adjusting screw 51 circumferentially and preventing the adjusting screw 51 from loosening due to vibration during machining. Then, the boring operation can be started. When the fine boring tool 2 or the breaking tool 3 is worn and needs to be replaced, it can be disassembled separately without disassembling the tool as a whole, which significantly improves the replacement efficiency.
[0025] The above provides a detailed description of a high-speed machining indexable PCD boring tool provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A high-speed machining indexable PCD boring tool, characterized in that, It includes a mounting base (1), a cutter shaft (11), a precision boring tool (2), a breaking tool (3), two adjusting blocks (4), a positioning adjustment assembly, a first limiting assembly, a second limiting assembly, a first support base (21), and a second support base (31); The cutter shaft (11) is installed on the rear side of the mounting base (1). The mounting base (1) has two mounting slots (101). The two mounting slots (101) are respectively provided with positioning slot one (102) and positioning slot two (103) along the radial direction of the cutter shaft (11). The support base one (21) and support base two (31) are slidably installed in positioning slot one (102) and positioning slot two (103) respectively. The precision boring tool (2) and the breaking tool (3) are respectively fixedly installed on support base one (21) and support base two (31). The mounting base (1) has two guide slots (105), and two adjusting blocks (4) are slidably installed in the corresponding guide slots (105). The two adjusting blocks (4) are inclined on the side that is close to the support base one (21) and the support base two (31), and the support base one (21) and the support base two (31) are slidably in contact with the corresponding adjusting blocks (4) through the inclined surface. The positioning adjustment component is set in the two guide slots (105) and connected to the two adjusting blocks (4). The mounting base (1) has two limiting holes (104). The first limiting component is disposed in the two limiting holes (104) and connected to the first support base (21) and the second support base (31). The second limiting component is disposed in the two mounting slots (101) and connected to the two first limiting components.
2. The indexable PCD boring tool for high-speed machining according to claim 1, characterized in that: The positioning adjustment assembly includes two adjusting screws (41), and two adjusting screws (41) are threadedly installed in the two guide slots (105). The ends of the two adjusting screws (41) that are close to each other are rotatably connected to the corresponding adjusting blocks (4).
3. The indexable PCD boring tool for high-speed machining according to claim 2, characterized in that: The cross-section of the guide slot (105) near the axis of the mounting base (1) is polygonal, and the guide slot (105) away from the axis of the mounting base (1) is cylindrical and has an internal thread that matches the adjusting screw (41).
4. The indexable PCD boring tool for high-speed machining according to claim 3, characterized in that: The limiting component includes two limiting blocks (5) and two adjusting screws (51). The adjusting screws (51) are threaded into the two limiting holes (104). The two adjusting screws (51) are rotatably installed at their close ends. The two limiting blocks (5) abut against the sides of the support base one (21) and the support base two (31) that are far apart from each other.
5. The indexable PCD boring tool for high-speed machining according to claim 4, characterized in that: Both limiting blocks (5) have rough surfaces on the side that is close to each other.
6. The indexable PCD boring tool for high-speed machining according to claim 5, characterized in that: The second limiting component includes two limiting bolts (7). Each of the two mounting slots (101) has a limiting bolt (7) rotatably installed. The ends of the two limiting bolts (7) that are close to each other are radially abutted against the corresponding adjusting screws (51).
7. The indexable PCD boring tool for high-speed machining according to claim 1, characterized in that: The scale plate (8) is fixedly installed on the side of each of the support base one (21) and support base two (31) that is far apart from each other.
8. A high-speed machining indexable PCD boring tool according to claim 4, characterized in that: Two adjusting screws (41) and two adjusting lead screws (51) are fixedly mounted with a locking block (6) at the end away from the axis of the mounting base (1). The locking block (6) has multiple regular hexagonal slots that are interconnected and located on the same axis.
9. A high-speed machining indexable PCD boring tool according to claim 1, characterized in that: The inclined surfaces of the adjustment block (4) and the inclined surfaces of support seat one (21) and support seat two (31) are all coated with wear-resistant layers.