A boring cutter for volute shell machining
By designing an adjustment device on the boring bar, consisting of an arc-shaped block, a lead screw, a dial, and a fine-tuning nut, combined with a lubrication device, the problems of adjustment deviation and insufficient lubrication of the boring bar in the machining of the volute housing are solved, achieving high-precision and high-efficiency machining results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YINGLIU ELECTROMECHANICAL
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-04
AI Technical Summary
Existing boring tools for machining volute housings are prone to deviations during the precise adjustment process of the fine-tuning nut, and lack flexible lubrication devices, which affects machining quality and efficiency.
A boring bar consisting of a tool holder and a tool base was designed. It adopts a connecting and adjusting device with an arc-shaped block, a lead screw, a dial and a fine-tuning nut, combined with a lubrication device. Precise radial adjustment and flexible lubrication are achieved through the arc-shaped locking wall and the squeezing cotton.
It improves the machining accuracy and efficiency of boring tools, reduces adjustment deviations, ensures high-quality machining results, and reduces tool adjustment resistance through a lubrication device.
Smart Images
Figure CN224587012U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically to a boring tool for machining volute casings. Background Technology
[0002] A boring tool for volute casing machining is a heavy-duty, rigid, precision boring tool designed and manufactured to meet the specific machining requirements of volute casing parts. Its core function is to precisely bore large-diameter, high-precision, and high-coaxiality hole systems for mounting bearings, seals, or other critical components on large, complex, and relatively weakly rigid volute casings. Through innovative high-rigidity structures, precision adjustment, vibration reduction technology, and optimized cutting design, it overcomes the problems of insufficient rigidity, high vibration, poor accuracy, and low efficiency faced by general-purpose boring tools in volute casing machining. The application of boring tools for volute casing machining is of irreplaceable importance in ensuring high-precision, high-quality, and high-efficiency machining of critical holes in volute casings, improving the performance and reliability of the final product, reducing manufacturing costs, and promoting the advancement of manufacturing technology for large-scale fluid machinery equipment.
[0003] Existing boring tools for machining volute housings have limited functionality and high costs, and have the following shortcomings: the adjustment between the fine-tuning nut and the dial of existing boring tools is relatively complex, and the precise radial adjustment process is prone to deviation, affecting the machining quality; at the same time, existing boring tools lack flexible lubrication devices, and the resistance is relatively large during the adjustment of the tool and tool holder. Utility Model Content
[0004] The purpose of this invention is to provide a boring tool for machining volute housings, which solves the technical problems of existing boring tools that are prone to deviation during the precise adjustment process using fine-tuning nuts and lack flexible lubrication devices.
[0005] The objective of this utility model can be achieved through the following technical solutions: A boring tool for machining a volute casing includes a tool shank, an upper part of which is connected to a tool holder, and a lower part of the tool holder is provided with a connecting adjustment device and a lubrication device. The connection adjustment device includes an arc-shaped block located in the upper half of the lower part of the tool holder. A lead screw runs through the arc-shaped block in a straight direction. A scale is fixedly connected to one end of the lead screw. Arc-shaped locking walls are set on both sides of the arc-shaped block according to the unit scale of the scale. A fine-tuning nut is set at the center of the scale. The lubrication device includes squeezed cotton symmetrically fixed at both ends of an arc-shaped block, and a lubricant collection tank that slides on the cutter bar.
[0006] As a further embodiment of this utility model, the dial rotates only within the limiting circular groove on the outer side of the tool holder, the lead screw rotates threadedly in the screw hole inside the arc-shaped block, a rotating groove is provided at the end of the lead screw away from the dial, the rotating groove is fixed inside the tool holder, and round handles are fixed at equal intervals at the lower part of the arc-shaped block.
[0007] As a further embodiment of this utility model, the lower part of the tool holder is provided with symmetrical arc-shaped locking vertical blocks in the upper and lower halves of the corresponding arc-shaped locking wall. The inner side of the arc-shaped locking vertical blocks is provided with arc-shaped locking wall two according to the unit scale of the dial. One of the arc-shaped locking vertical blocks has a telescopic rod fixed in the middle of the side facing away from the arc-shaped locking wall two. The other end of the telescopic rod is fixedly connected to the inner wall of the tool holder.
[0008] As a further embodiment of this utility model, bolts are symmetrically arranged on one side of the knife holder at the middle position of the upper and lower halves of the internal arc-shaped locking vertical block, for tightening or loosening the arc-shaped locking vertical block connected to the telescopic rod at the end.
[0009] As a further embodiment of this utility model, the tool holder has symmetrically arranged liquid filling holes on both sides corresponding to the top position of the arc-shaped block for adding lubricating fluid.
[0010] As a further embodiment of this utility model, the upper part of the tool holder is provided with an arc-shaped block two that connects with the arc-shaped block one inside the upper half of the lower end of the tool holder. The arc-shaped block two has the same shape as the arc-shaped block one. The upper part of the arc-shaped block two is provided with a circular hole at the same distance as the circular handle for connecting the arc-shaped block one and the arc-shaped block two, and connecting to the upper and lower half of the lower end of the tool holder. Arc-shaped locking walls are provided on both sides of the arc-shaped block two according to the unit scale of the dial.
[0011] As a further embodiment of this utility model, the lubricant collection tank includes a rubber ring that slides on the inner ring portion of the tool holder, and the rubber ring is fixed to the outer ring by a base plate.
[0012] As a further embodiment of this invention, a blade tip is fixed to the lower part of the blade holder.
[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the precise connection between the tool holder and the tool support, along with the coordinated movement of the fine-tuning nut and the arc-shaped retaining wall, reduces deviations during precise radial adjustment, thereby improving machining accuracy.
[0014] In this invention, the adjustment and movement of the arc-shaped block squeezes the compression cotton at both ends, flexibly lubricating the knife holder and knife bar, and achieving the effect of collecting excess lubricant. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the lower part of the tool holder of this utility model; Figure 3 This is a schematic diagram of a partial structure inside the lower part of the tool holder of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of a partial structure inside the lower part of the tool holder of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the interlocking structure of the first and second arc-shaped locking walls of this utility model. Figure 6 This is a schematic diagram of the tool holder structure of this utility model; Figure 7 This is a schematic diagram of the lubricant collection tank structure of this utility model.
[0017] In the diagram: 1. Tool holder; 2. Tool holder; 3. Connecting and adjusting device; 4. Lubrication device; 5. Arc-shaped block one; 6. Lead screw; 7. Dial; 8. Arc-shaped locking wall one; 9. Squeezing cotton; 10. Lubricating fluid collection tank; 11. Rotating groove; 12. Round handle; 13. Arc-shaped locking vertical block; 14. Arc-shaped locking wall two; 15. Telescopic rod; 16. Bolt; 17. Fluid filling hole; 18. Arc-shaped block two; 19. Round hole; 20. Rubber ring; 21. Outer ring; 22. Tool tip. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0019] See appendix Figure 1-7As shown, a boring bar for machining a volute casing includes a tool shank 1, with a tool holder 2 connected to the upper part of the tool shank 1. A connection adjustment device 3 and a lubrication device 4 are disposed within the lower part of the tool holder 2. The connection adjustment device 3 includes an arc-shaped block 5 located in the upper half of the lower part of the tool holder 2. A lead screw 6 runs vertically through the interior of the arc-shaped block 5. A scale 7 is fixedly connected to one end of the lead screw 6. Arc-shaped retaining walls 8 are provided on both sides of the arc-shaped block 5 according to the unit scale of the scale 7. A fine-tuning nut is disposed at the center of the scale 7. The lubrication device 4 includes compression cotton 9 symmetrically fixed to both ends of the arc-shaped block 5, and a lubricant collection groove 10 sliding on the tool shank 1. The scale 7 rotates only within a limiting circular groove on the outer side of the tool holder 2. The lead screw 6 rotates in a threaded hole inside the arc-shaped block 5. A rotating groove 11 is provided at the end of the lead screw 6 away from the dial 7. The rotating groove 11 is fixed inside the tool holder 2. A round shank 12 is fixed at equal intervals at the lower part of the arc-shaped block 5. An arc-shaped block 18 is provided at the upper part of the tool holder 1, which connects with the arc-shaped block 5 in the upper half of the lower end of the tool holder 2. The arc-shaped block 18 has the same shape as the arc-shaped block 5. A round hole 19 is provided at the upper part of the arc-shaped block 18 at equal intervals with the round shank 12 for connecting the arc-shaped block 5 and the arc-shaped block 18, and connecting to the upper and lower half of the lower end of the tool holder 2. Arc-shaped retaining walls 8 are provided on both sides of the arc-shaped block 18 according to the unit scale of the dial 7. A tool tip 22 is fixed at the lower part of the tool holder 1.
[0020] For details, please refer to the appendix. Figure 2-6As shown, symmetrical arc-shaped locking blocks 13 are arranged in the upper and lower halves of the lower part of the tool holder 2, corresponding to the position of the arc-shaped locking wall 18. Arc-shaped locking walls 14 are arranged on the inner side of the arc-shaped locking blocks 13 according to the unit scale of the dial 7. One end of a telescopic rod 15 is fixed to the middle of the side of one of the arc-shaped locking blocks 13 facing away from the arc-shaped locking wall 14. The other end of the telescopic rod 15 is fixedly connected to the inner wall of the tool holder 2. Bolts 16 are symmetrically arranged on one side of the tool holder 2, corresponding to the middle position of the upper and lower halves of the internal arc-shaped locking blocks 13, for tightening or loosening the ends of the arc-shaped locking blocks 13 connected to the telescopic rod 15. When assembling the tool, the arc-shaped block 18 on the upper part of the tool holder 1 matches the multiple round holes 19 at equal intervals below the arc-shaped block 5 with multiple round shanks 12 at corresponding intervals. At this time, the arc-shaped blocks 15 and 18 are located in the upper and lower halves of the lower part of the tool holder 2. The two sets of bolts 16 on one side of the tool holder 2, corresponding to the upper and lower halves, are used to initially fix the arc-shaped block 5 and the arc-shaped block 18. The telescopic rod 15 can realize the flexible movement of the arc-shaped locking vertical block 13. When the tool is radially precisely adjusted, the bolts 16 are loosened, the fine-tuning nut is adjusted, and the scale 7 rotates in the groove to adjust the target radial movement distance. The connected lead screw 6 drives the arc-shaped block 5 to move. Due to the limitation of the connection between the two sides of the tool holder 2 and the tool bar 1, the arc-shaped block 5 and the arc-shaped block 18 can only move simultaneously along the length of the lead screw 6. Since the unit length of the arc-shaped locking wall 18 and the arc-shaped locking wall 214 corresponds to the unit scale of the scale 7, the arc-shaped locking wall 18 and the arc-shaped locking wall 214 mesh according to the corresponding target distance to ensure the controllable and stable adjustment of the radial distance. Then the bolts 16 are tightened.
[0021] Additionally, see appendix. Figure 7 As shown, the tool holder 2 has symmetrically arranged liquid filling holes 17 on both sides corresponding to the top positions of the arc-shaped blocks 5, which are used to add lubricant. The lubricant collection tank 10 includes a rubber ring 20 that slides on the inner ring of the tool rod 1. The rubber ring 20 is fixed to the outer ring 21 by the base plate. While adjusting the radial distance, lubricant is introduced through the liquid filling holes 17. The arc-shaped blocks 5 squeeze the squeezing cotton 9 at both ends, and the lubricant falls down to lubricate the inside of the tool holder 2 and the tool rod 1. Finally, it falls into the lubricant collection tank 10. The rubber ring 20 can be used to fit tool rods 1 with different rod diameters.
[0022] The working principle of this utility model is as follows: the flexible assembly of the tool holder 1, the tool base 2, and their different internal structural parts achieves the effect of reducing deviation during precise radial adjustment. Simultaneously, when assembling the tool, the arc-shaped block 18 on the upper part of the tool holder 1 matches the multiple round holes 19 at equal intervals with the corresponding round handles 12 below the arc-shaped block 5. At this time, the arc-shaped blocks 5 and 18 are located in the upper and lower halves of the lower part of the tool base 2. The arc-shaped blocks 5 and 18 are initially fixed by adjusting the two sets of bolts 16 on one side of the tool base 2 corresponding to the upper and lower halves. The telescopic rod 15 allows for flexible movement of the arc-shaped locking vertical block 13. When performing precise radial adjustment of the tool, the bolts 16 are loosened, the fine-tuning nut is adjusted, and the scale 7 rotates within the groove, adjusting the target radial displacement. The connecting lead screw 6 drives the arc-shaped block 5 to move. Due to the limitation of the connection between the two sides of the tool holder 2 and the tool rod 1, the arc-shaped block 5 and the arc-shaped block 18 can only move simultaneously along the length of the lead screw 6. Since the unit length of the arc-shaped locking wall 18 and the arc-shaped locking wall 214 corresponds to the unit scale of the dial 7, the arc-shaped locking wall 18 and the arc-shaped locking wall 214 mesh according to the corresponding target distance to ensure the controllable and stable adjustment of the radial distance. Then, the bolt 16 is tightened. While adjusting the radial distance, lubricating fluid is introduced through the liquid filling hole 17. The arc-shaped block 5 squeezes the squeezing cotton 9 at both ends, and the lubricating fluid falls down to lubricate the inside of the tool holder 2 and the tool rod 1. Finally, it falls into the lubricating fluid collection tank 10. The rubber ring 20 can be used to loop the tool rod 1 with different rod diameters. In this invention, the precise connection between the tool holder 1 and the tool base 2, and the coordinated movement of the fine-tuning nut and the arc-shaped locking wall, reduce deviations during precise radial adjustment, which is beneficial to improving machining accuracy. By adjusting and moving the arc-shaped block, the squeezing cotton 9 at both ends is squeezed, which flexibly lubricates the tool holder 1 and the tool base 2 and achieves the effect of collecting excess lubricant.
[0023] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A boring tool for volute housing machining, comprising a tool bar (1), characterized in that: The upper part of the tool holder (1) is connected to the tool holder (2), and the lower part of the tool holder (2) is provided with a connection adjustment device (3) and a lubrication device (4). The connection adjustment device (3) includes an arc-shaped block (5) located in the upper half of the lower part of the tool holder (2). A lead screw (6) runs straight through the interior of the arc-shaped block (5). A scale (7) is fixedly connected to one end of the lead screw (6). Arc-shaped locking walls (8) are set on both sides of the arc-shaped block (5) according to the unit scale of the scale (7). A fine-tuning nut is set at the center of the scale (7). The lubrication device (4) includes squeeze cotton (9) symmetrically fixed at both ends of the arc-shaped block (5), and also includes a lubricant collection tank (10) sliding on the knife bar (1).
2. The boring tool for volute shell machining according to claim 1, characterized in that: The dial (7) rotates only in the limiting circular groove opened on the outside of the tool holder (2). The lead screw (6) rotates in the screw hole opened inside the arc block (5) with a thread. The end of the lead screw (6) away from the dial (7) is provided with a rotating groove (11). The rotating groove (11) is fixed inside the tool holder (2). The lower part of the arc block (5) is fixed with round handles (12) at equal intervals.
3. The boring tool for volute shell machining according to claim 1, characterized in that: The lower part of the tool holder (2) is symmetrically provided with arc-shaped locking vertical blocks (13) in the upper and lower halves corresponding to the position of the arc-shaped locking wall one (8). The inner side of the arc-shaped locking vertical block (13) is provided with an arc-shaped locking wall two (14) according to the unit scale of the dial (7). One of the arc-shaped locking vertical blocks (13) is fixed with one end of a telescopic rod (15) in the middle of the side facing away from the arc-shaped locking wall two (14). The other end of the telescopic rod (15) is fixedly connected to the inner wall of the tool holder (2).
4. The boring tool for volute shell machining according to claim 1, characterized in that: Bolts (16) are symmetrically arranged on one side of the knife holder (2) at the middle position of the upper and lower halves of the internal arc-shaped locking vertical block (13), which are used to tighten or loosen the arc-shaped locking vertical block (13) connected to the telescopic rod (15).
5. The boring tool for volute shell machining according to claim 1, characterized in that: The tool holder (2) has symmetrical arrayed filling holes (17) on both sides corresponding to the top position of the arc-shaped block (5) for adding lubricating fluid.
6. The boring tool for volute shell machining according to claim 1, characterized in that: The upper part of the tool holder (1) is provided with an arc-shaped block two (18) that connects with the arc-shaped block one (5) in the upper half of the lower end of the tool holder (2). The arc-shaped block two (18) has the same shape as the arc-shaped block one (5). The upper part of the arc-shaped block two (18) is provided with a round hole (19) that is equidistant from the round handle (12) for connecting the arc-shaped block one (5) and the arc-shaped block two (18), and connecting to the upper and lower half of the lower end of the tool holder (2). The arc-shaped locking wall one (8) is provided on both sides of the arc-shaped block two (18) according to the unit scale of the dial (7).
7. The boring tool for volute shell machining according to claim 1, characterized in that: The lubricant collection tank (10) includes a rubber ring (20) that slides on the inner ring portion of the tool holder (1), and the rubber ring (20) is fixed to the outer ring (21) by a base plate.
8. The boring tool for volute shell machining according to claim 1, characterized in that: The lower part of the shank (1) is fixed with a blade tip (22).