Machining part for honing inner hole

Abstract

The utility model provides a machining part for honing an inner hole, which relates to the technical field of inner hole machining, is used for being assembled on a cutter bar of a main shaft of a boring machine, and comprises a seat body, one end of the elastic mechanism is connected with the seat body; the honing oilstone is connected with the other end of the elastic mechanism; one end of the connecting rod is connected with the seat body, and the connecting rod intersects with the cutter bar and is in sliding connection with the cutter bar so as to be used for adjusting the distance between the honing oilstone and the cutter bar; the locking mechanism is arranged on the cutter bar, the locking mechanism is used for locking the connecting rod on the cutter bar, and the honing oilstone can hone the hole wall of the inner hole to be machined when the main shaft rotates; the machining part can guarantee that the hole wall roughness of the tailstock mandrel hole meets the design requirement, meanwhile, the machining part can be suitable for machining tailstock mandrel holes with different hole diameters, and universality is high.

Description

Technical Field

[0001] This utility model belongs to the field of internal hole processing technology, and more specifically, relates to a processing component for honing internal holes. Background Technology

[0002] The tailstock of a CNC machine tool is crucial to the overall machine accuracy. It not only supports the workpiece but also improves cutting accuracy and machining efficiency. Therefore, improving the machining accuracy of the tailstock is imperative. Currently, the use of high-precision horizontal machining centers and other machine tools has improved the machining accuracy of the tailstock, but it also has drawbacks. For example, the length-to-diameter ratio of the cutting tool is approximately 1:5. Longer tools can cause vibration, and the cost of vibration-damping tool holders is relatively high, while honing machines cost several million yuan.

[0003] Currently, the machining accuracy of the tailstock of a CNC machine tool directly affects the overall cutting accuracy. The machining accuracy requirements for the tailstock of a CNC machine tool mainly include: dimensional tolerances, behavioral tolerances, and surface roughness for the tailstock mandrel hole. The finishing of the tailstock mandrel hole is usually done using a floating tool plate on a boring machine. During the machining process, the dimensional tolerances of the tailstock mandrel hole can be guaranteed by adjusting the tool plate size. The boring machine accuracy and process methods can guarantee the various behavioral tolerances of the tailstock mandrel hole. However, the surface roughness after machining is generally between Ra0.8 and Ra1.1. It is difficult to meet the surface roughness requirements of the drawing, which causes the tailstock mandrel to be unable to slide smoothly in the mandrel hole and poses a risk of scratches, seriously affecting the overall cutting accuracy of the CNC machine tool. Therefore, ensuring that the surface roughness of the tailstock mandrel hole meets the design requirements is crucial to improving the overall accuracy of the machine tool. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a machining component for honing inner holes. This solves the problem mentioned in the background art: currently, when machining the tailstock mandrel hole of a CNC machine tool, the surface roughness of the hole is difficult to meet the drawing requirements, resulting in the tailstock mandrel not being able to slide smoothly in the mandrel hole and the risk of scratches, which seriously affects the overall cutting accuracy of the CNC machine tool.

[0005] To achieve the above objectives, this utility model provides a machining component for honing internal holes, which is mounted on the tool holder of a boring machine spindle. The machining component includes:

[0006] seat body;

[0007] An elastic mechanism, one end of which is connected to the base body;

[0008] A honing stone, which is connected to the other end of the elastic mechanism;

[0009] A connecting rod, one end of which is connected to the base body, intersects with and is slidably connected to the tool bar, for adjusting the distance between the honing stone and the tool bar;

[0010] A locking mechanism is provided on the tool holder, which is used to lock the connecting rod on the tool holder. The honing stone can hone the wall of the inner hole to be machined when the spindle rotates.

[0011] Preferably, one end of the base is provided with a mounting hole, and the elastic mechanism includes:

[0012] A spring, wherein the spring is disposed within the mounting hole;

[0013] A column, one end of which is slidably connected in the mounting hole and fits against one end of the spring, and the other end of which is connected to the honing stone.

[0014] Preferably, the elastic mechanism further includes:

[0015] The guide bolt has a guide threaded hole on the outer side of the base body, which communicates with the mounting hole. The outer side of the column body has an elongated guide groove. The guide bolt is threadedly connected to the guide threaded hole, and one end of the guide bolt is inserted into the guide groove.

[0016] Preferably, the machining component for honing the inner hole further includes:

[0017] A clamping mechanism is connected to the other end of the column and is used to clamp the honing stone.

[0018] Preferably, the clamping mechanism includes:

[0019] A chuck is connected to the other end of the column. The chuck has a clamping groove, and the honing stone is placed in the clamping groove. At least two clamping threaded holes are provided on one side of the chuck, and the clamping threaded holes communicate with the clamping groove.

[0020] A gasket, wherein the gasket is disposed between the honing stone and one side of the groove;

[0021] At least two clamping screws, each of the clamping threaded holes being threadedly connected to one of the clamping screws, with one end of the clamping screw abutting against the washer.

[0022] Preferably, the machining component for honing the inner hole further includes:

[0023] A connecting mechanism for connecting one end of the connecting rod to the base.

[0024] Preferably, a locking groove is provided between the other end of the seat and the outer side of the seat, and one end of the connecting rod is inserted into the locking groove. The connecting mechanism includes:

[0025] A connecting screw is provided; a connecting hole is provided on one end sidewall of the connecting rod; a connecting threaded hole communicating with the connecting hole is provided at the bottom of the locking groove; and the connecting screw passes through the connecting hole and is threadedly connected to the connecting threaded hole.

[0026] A locking screw is provided with a locking threaded hole on one side of the locking groove. The locking screw is threadedly connected to the locking threaded hole, and one end of the locking screw is used to abut against the connecting rod.

[0027] Preferably, the side wall of the tool holder is provided with a sliding hole, and the connecting rod is slidably connected in the sliding hole.

[0028] Preferably, the locking groove, the connecting rod, and the sliding hole are all rectangular.

[0029] Preferably, one end of the tool holder is provided with a locking threaded hole, the locking threaded hole communicating with the sliding hole, and the locking mechanism includes:

[0030] A locking screw is threaded into the locking threaded hole, and one end of the locking screw is used to abut against the connecting rod.

[0031] This utility model provides a machining component for honing internal holes. Its advantages are as follows: This machining component is used to machine the tailstock mandrel hole. The base of the machining component is connected to the honing stone via an elastic mechanism and is adapted to the tool holder of the boring machine spindle via a connecting rod. The machining component utilizes the pressure of the elastic mechanism to press the honing stone firmly against the hole wall of the tailstock mandrel hole. Then, through the rotation and feed of the boring machine spindle, the honing stone is driven to grind the hole wall of the tailstock mandrel hole. The surface roughness after machining can reach Ra0.4, ensuring that the surface roughness of the tailstock mandrel hole meets the design requirements and ensuring smoother sliding of the tailstock mandrel within the hole. This improves the cutting accuracy and overall quality of the CNC machine tool. Furthermore, the use of this machining component on a boring machine reduces the limitations of not having a honing machine.

[0032] The connecting rod of this machining component intersects and slides with the tool holder. The locking mechanism is set on the tool holder. When the distance between the honing stone and the tool holder is adjusted to match the hole wall of the tailstock mandrel hole, the locking mechanism locks the connecting rod on the tool holder to prevent the connecting rod from moving relative to the tool holder. The change in the position of the connecting rod relative to the tool holder can change the machining range, making it widely applicable. It can be used to machine tailstock mandrel holes with different diameters and has strong versatility.

[0033] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0034] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0035] Figure 1 A three-dimensional structural schematic diagram of a machining component for honing internal holes according to an embodiment of the present invention is shown. Figure 1 ;

[0036] Figure 2 A three-dimensional structural schematic diagram of a machining component for honing internal holes according to an embodiment of the present invention is shown. Figure 2 ;

[0037] Figure 3 An exploded view of a machining component for honing inner holes according to an embodiment of the present invention is shown.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Tool holder; 2. Base; 3. Honing stone; 4. Connecting rod; 5. Mounting hole; 6. Spring; 7. Column; 8. Guide bolt; 9. Guide groove; 10. Chuck; 11. Clamping groove; 12. Washer; 13. Clamping screw; 14. Locking groove; 15. Connecting screw; 16. Locking screw; 17. Sliding hole; 18. Locking screw. Detailed Implementation

[0040] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0041] like Figures 1-3 As shown, this utility model provides a machining component for honing internal holes, which is used to be mounted on the tool holder 1 of a boring machine spindle. The machining component includes:

[0042] base body 2;

[0043] An elastic mechanism, one end of which is connected to the base 2;

[0044] Honing stone 3, which is connected to the other end of the elastic mechanism;

[0045] Connecting rod 4, one end of which is connected to the base 2, and connecting rod 4 intersects with and is slidably connected to the tool holder 1, so as to adjust the distance between the honing stone 3 and the tool holder 1;

[0046] The locking mechanism is set on the tool holder 1. The locking mechanism is used to lock the connecting rod 4 on the tool holder 1. The honing stone 3 can hone the hole wall of the inner hole to be processed when the spindle rotates.

[0047] Specifically, to address the problem that the surface roughness of the tailstock mandrel hole is difficult to meet the drawing requirements during machining of the tailstock mandrel hole in CNC machine tools, resulting in the tailstock mandrel not being able to slide smoothly within the mandrel hole and posing a risk of scratching, which seriously affects the overall cutting accuracy of the CNC machine tool, this utility model provides a machining component for honing internal holes. This machining component is used to machine the tailstock mandrel hole. The base 2 of the machining component is connected to the honing stone 3 through an elastic mechanism and is adapted to the tool holder 1 of the boring machine spindle through a connecting rod 4. The machining component uses the pressure of the elastic mechanism to press the honing stone 3 firmly into the tailstock mandrel hole. The honing stone 3 is then driven to grind the hole wall of the tailstock mandrel by the rotation and feed of the boring machine spindle. Using this machining part, the roughness of the tailstock mandrel hole can be reduced without changing the behavior tolerance of the tailstock mandrel hole. Generally, the roughness after machining can reach about Ra0.4, which can ensure that the roughness of the hole wall of the tailstock mandrel hole meets the design requirements and ensure that the tailstock mandrel slides more smoothly in the tailstock mandrel hole, thereby improving the cutting accuracy and overall quality of the CNC machine tool. At the same time, the use of this machining part on the boring machine reduces the limitation of not having a honing machine.

[0048] The connecting rod 4 of this machining component intersects and slides with the tool holder 1. The locking mechanism is set on the tool holder 1. When the distance between the honing stone 3 and the tool holder 1 is adjusted to match the hole wall of the tailstock mandrel hole, the locking mechanism locks the connecting rod 4 on the tool holder 1 to prevent the connecting rod 4 from moving relative to the tool holder 1. The change in the position of the connecting rod 4 relative to the tool holder 1 can change the machining range. It has a wide range of applications and can be used for honing tailstock mandrel holes with diameters from ф80 to ф800. It has strong versatility.

[0049] Preferably, one end of the base 2 is provided with a mounting hole 5, and the elastic mechanism includes:

[0050] Spring 6 is installed inside mounting hole 5;

[0051] The column 7 has one end slidably connected in the mounting hole 5 and fitted with one end of the spring 6, while the other end of the column 7 is connected to the honing stone 3.

[0052] Specifically, the base 2 is cylindrical. This machining component uses the elastic force of the spring 6 to press the honing stone 3 against the hole wall of the tailstock spindle hole. Then, through the rotation and feed of the boring machine spindle, the honing stone 3 is driven to perform grinding on the hole wall of the tailstock spindle hole. During the machining process, oil cooling can be used to reduce the impact of the heat generated during the grinding process on the accuracy of the tailstock spindle hole.

[0053] Preferably, the elastic mechanism further includes:

[0054] The guide bolt 8 has a guide threaded hole on the outside of the base 2, which is connected to the mounting hole 5. The outer side of the column 7 has a long guide groove 9. The guide bolt 8 is threadedly connected to the guide threaded hole, and one end of the guide bolt 8 is inserted into the guide groove 9.

[0055] Specifically, by setting a guide threaded hole on the base 2 and opening an elongated guide groove 9 on the outside of the column 7, the guide groove 9 is waist-shaped and is threadedly connected to the guide threaded hole by a guide bolt 8, with one end of the guide bolt 8 extending into the guide groove 9, the movement of the column 7 can be axially guided and circumferentially limited, ensuring that the column 7 moves smoothly during the extension and retraction process without circumferential rotation or radial offset, thereby ensuring that the honing stone 3 always feeds stably in the predetermined direction, improving the coaxiality and surface quality consistency of the honing of the tailstock mandrel hole, and at the same time improving the structural stability and service life of the entire processing component.

[0056] Preferably, the machining component for honing the inner hole further includes:

[0057] The clamping mechanism is connected to the other end of the column 7 and is used to clamp the honing stone 3.

[0058] Specifically, the clamping mechanism is used to clamp and fix the honing stone 3.

[0059] Preferably, the clamping mechanism includes:

[0060] The chuck 10 is connected to the other end of the column 7. The chuck 10 is provided with a clamping groove 11. The honing stone 3 is placed in the clamping groove 11. At least two clamping threaded holes are provided on one side of the chuck 10. The clamping threaded holes are connected to the clamping groove 11.

[0061] Gasket 12 is disposed between the honing stone 3 and one side of the groove 11;

[0062] At least two clamping screws 13, each clamping threaded hole is threaded to a clamping screw 13, and one end of the clamping screw 13 rests against a washer 12.

[0063] Specifically, by setting up a clamping mechanism that engages the chuck 10, the washer 12, and two M8 clamping screws 13, stable and reliable clamping of the honing stone can be achieved. The chuck 10 has a clamping groove 11, which can initially position and limit the honing stone 3, ensuring the accurate installation position of the honing stone 3. The washer 12 is set between the honing stone 3 and the clamping groove 11, which can prevent the clamping screws 13 from directly pressing on the honing stone 3, increasing the clamping area, effectively preventing stress concentration, cracking, or damage to the honing stone 3 during clamping, and improving the clamping safety and service life of the honing stone 3.

[0064] The clamping mechanism has a simple structure and is easy to assemble and disassemble, making it convenient to quickly replace honing stones of different specifications according to processing needs, thus improving the versatility and practicality of the device.

[0065] Preferably, the machining component for honing the inner hole further includes:

[0066] A connecting mechanism is used to connect one end of the connecting rod 4 to the base 2.

[0067] Specifically, one end of the connecting rod 4 is connected to the base 2 through a connecting mechanism.

[0068] Preferably, a locking groove 14 is provided between the other end of the seat 2 and the outer side of the seat 2, and one end of the connecting rod 4 is inserted into the locking groove 14. The connecting mechanism includes:

[0069] The connecting screw 15 has a connecting hole on one side wall of the connecting rod 4, and the bottom of the locking groove 14 has a connecting threaded hole that communicates with the connecting hole. The connecting screw 15 passes through the connecting hole and is threadedly connected to the connecting threaded hole.

[0070] The locking screw 16 has a locking threaded hole on one side of the locking groove 14. The locking screw 16 is threadedly connected to the locking threaded hole, and one end of the locking screw is used to abut against the connecting rod 4.

[0071] Specifically, by setting a locking groove 14 on the base 2 and inserting one end of the connecting rod 4 into the locking groove 14, a double locking structure is formed in two directions with the cooperation of the M10 connecting screw 15 and the M10 locking screw 16, which can achieve a stable, reliable and high-precision connection between the connecting rod 4 and the base 2. The connecting screw 15 passes through the connecting hole of the connecting rod 4 and mates with the connecting threaded hole at the bottom of the locking groove 14, which can realize the axial positioning and circumferential limiting between the connecting rod 4 and the base 2, ensuring that the connection between the two is firm and preventing relative rotation or falling off; the locking screw 16 abuts against the connecting rod 4 through the locking threaded hole, which can further eliminate the fit clearance, prevent the connecting rod 4 from radial movement or loosening during processing, and improve the rigidity and stability of the overall structure.

[0072] This connecting mechanism is easy to assemble, has high positioning accuracy and strong connection strength, which can effectively ensure coaxiality and smooth movement during honing, reduce vibration, thereby improving the machining accuracy and surface quality of the tailstock mandrel hole. At the same time, it is easy to disassemble and maintain, improving the versatility and service life of the machining component.

[0073] Preferably, the side wall of the tool holder 1 is provided with a sliding hole 17, and the connecting rod 4 is slidably connected in the sliding hole 17.

[0074] Specifically, the movable connecting rod 4 can be used to adjust the distance between the honing stone 3 and the tool holder 1, and is applicable to the honing of tailstock mandrel holes with diameters from ф80 to ф800, making it highly versatile.

[0075] Preferably, the locking groove 14, the tool bar 1, and the sliding hole 17 are all rectangular.

[0076] Specifically, the locking groove 14, connecting rod 4 and sliding hole 17 are all set as rectangular sections. By utilizing the circumferential limiting characteristics of the rectangular structure itself, the relative rotation between the components can be effectively restricted, ensuring high coaxiality and accurate centering after assembly.

[0077] Preferably, one end of the tool holder 1 is provided with a locking threaded hole, which communicates with the sliding hole 17. The locking mechanism includes:

[0078] Locking screw 18 is threaded into the locking threaded hole, and one end of locking screw 18 is used to abut against the connecting rod 4.

[0079] Specifically, by providing an M16 locking threaded hole on the tool holder 1 and using an M16 locking screw 18 to form a locking mechanism for fixing the connecting rod 4, reliable locking and positioning between the connecting rod 4 and the tool holder 1 can be achieved. The locking screw 18 is threaded into the locking threaded hole, with one end abutting against the connecting rod 4, which can effectively eliminate the assembly gap between the connecting rod 4 and the tool holder 1, preventing axial movement, radial wobble, or circumferential rotation of the connecting rod 4 during cutting and honing, and ensuring connection rigidity and motion stability.

[0080] In summary, this machining component utilizes the pressure of an elastic mechanism to press the honing stone 3 against the wall of the tailstock mandrel hole. Then, through the rotation and feed of the boring machine spindle, the honing stone 3 is driven to grind the wall of the tailstock mandrel hole. Using this machining component, the roughness of the tailstock mandrel hole can be reduced without changing its behavioral tolerance. Generally, the roughness after machining can reach about Ra0.4, ensuring that the roughness of the tailstock mandrel hole wall meets the design requirements and ensuring smoother sliding of the tailstock mandrel within the hole. During CNC machine tool cutting, it has significant effects in reducing vibration and balancing cutting forces, improving the overall machine accuracy. At the same time, the use of this machining component on a boring machine reduces the limitations of not having a honing machine, improves work efficiency, and allows for low-cost machining of the tailstock mandrel hole.

[0081] The connecting rod 4 of this machining component intersects and slides with the tool holder 1. The locking mechanism is set on the tool holder 1. When the distance between the honing stone 3 and the tool holder 1 is adjusted to match the hole wall of the tailstock mandrel hole, the locking mechanism locks the connecting rod 4 on the tool holder 1 to prevent the connecting rod 4 from sliding relative to the tool holder 1. The position change of the connecting rod 4 relative to the tool holder 1 can change the machining range, and it has a wide range of applications. It can be used for honing the tailstock mandrel hole with a diameter from ф80 to ф800, and has strong versatility.

[0082] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A machining component for honing internal holes, used for mounting on the tool holder of a boring machine spindle, characterized in that, The machined component includes: seat body; An elastic mechanism, one end of which is connected to the base body; A honing stone, which is connected to the other end of the elastic mechanism; A connecting rod, one end of which is connected to the base body, intersects with and is slidably connected to the tool bar, for adjusting the distance between the honing stone and the tool bar; A locking mechanism is provided on the tool holder, which is used to lock the connecting rod on the tool holder. The honing stone can hone the wall of the inner hole to be machined when the spindle rotates.

2. The machining component for honing inner holes according to claim 1, characterized in that, One end of the base is provided with a mounting hole, and the elastic mechanism includes: A spring, wherein the spring is disposed within the mounting hole; A column, one end of which is slidably connected in the mounting hole and fits against one end of the spring, and the other end of which is connected to the honing stone.

3. The machining component for honing inner holes according to claim 2, characterized in that, The elastic mechanism also includes: The guide bolt has a guide threaded hole on the outer side of the base body, which communicates with the mounting hole. The outer side of the column body has an elongated guide groove. The guide bolt is threadedly connected to the guide threaded hole, and one end of the guide bolt is inserted into the guide groove.

4. A machining component for honing inner holes according to claim 2, characterized in that, The machining component for honing the inner hole also includes: A clamping mechanism is connected to the other end of the column and is used to clamp the honing stone.

5. A machining component for honing inner holes according to claim 4, characterized in that, The clamping mechanism includes: A chuck is connected to the other end of the column. The chuck has a clamping groove, and the honing oilstone is placed in the clamping groove. At least two clamping threaded holes are provided on one side of the chuck, and the clamping threaded holes communicate with the clamping groove. A gasket, wherein the gasket is disposed between the honing stone and one side of the groove; At least two clamping screws, each of the clamping threaded holes being threadedly connected to one of the clamping screws, with one end of the clamping screw abutting against the washer.

6. A machining component for honing inner holes according to claim 2, characterized in that, The machining component for honing the inner hole also includes: A connecting mechanism for connecting one end of the connecting rod to the base.

7. A machining component for honing internal holes according to claim 6, characterized in that, A locking groove is provided between the other end of the base and the outer side of the base, and one end of the connecting rod is inserted into the locking groove. The connecting mechanism includes: A connecting screw is provided; a connecting hole is provided on one end sidewall of the connecting rod; a connecting threaded hole communicating with the connecting hole is provided at the bottom of the locking groove; and the connecting screw passes through the connecting hole and is threadedly connected to the connecting threaded hole. A locking screw is provided with a locking threaded hole on one side of the locking groove. The locking screw is threadedly connected to the locking threaded hole, and one end of the locking screw is used to abut against the connecting rod.

8. A machining component for honing internal holes according to claim 7, characterized in that, The side wall of the tool holder is provided with a sliding hole, and the connecting rod is slidably connected in the sliding hole.

9. A machining component for honing internal holes according to claim 8, characterized in that, The locking groove, the connecting rod, and the sliding hole are all rectangular.

10. A machining component for honing internal holes according to claim 8, characterized in that, One end of the tool holder is provided with a locking threaded hole, which communicates with the sliding hole. The locking mechanism includes: A locking screw is threaded into the locking threaded hole, and one end of the locking screw is used to abut against the connecting rod.

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