A deep hole extended tool holder fixing support device

Abstract

This invention discloses a deep-hole extended tool holder fixing support device, comprising an operating platform. A movable support assembly is fixedly installed on the inner wall of the operating platform. A support frame assembly is installed on the side of the movable support assembly. A rapid traversing mechanism is installed on the side wall of the support frame assembly. A tool holder assembly is fixedly installed on the side of the rapid traversing mechanism. The movable support assembly, support frame assembly, rapid traversing mechanism, and tool holder assembly are mounted on the surface of the operating platform. The beneficial effects of this invention are: reasonable structural design, novel concept, convenient operation, low processing and manufacturing cost, reduced cost investment, and multiple anti-vibration support mechanisms, which can fully guarantee the stability of the entire machine, improve the stability and strength of the overall support, ensure the horizontal straightness accuracy of the entire machine, and allow the tool holder to move horizontally and vertically, expanding the application range and improving the processing accuracy and efficiency of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of deep hole machining equipment technology in mechanical manufacturing, specifically a deep hole extended tool holder fixing support device. Background Technology

[0002] Deep hole drill bit extension rods are primarily used for deep hole machining. They extend the drill bit's length, allowing it to reach previously inaccessible locations and improving drilling depth and precision. In mechanical manufacturing, cylindrical holes with a depth exceeding ten times their diameter are generally considered deep holes. Characteristics of deep hole machining include poor tool rigidity and low strength, susceptibility to vibration during cutting, difficulties in chip removal and cooling / lubrication, and challenges in judging the cutting process. Using extension rods can help solve these problems, improving the efficiency and quality of deep hole machining.

[0003] In existing machining processes, some inner holes have a diameter of no more than 0.5-0.7m, but a depth of 2m-3m. The blank is manufactured using centrifugal casting, which results in problems such as sand adhesion, hard spots, and uneven allowance on the inner hole surface. During cutting, vibration and "tool deflection" are easily generated, and the machined surface produces problems such as ripples and taper. Existing equipment is expensive, has limited processing capabilities, and low processing efficiency, and cannot solve the above-mentioned technical problems.

[0004] The announcement number is CN106514316B, and the title is "A Drill Rod Support Device." Specifically, it discloses a method where the workpiece rotates at high speed during machining, the tool holder rotates at low speed, and the tool performs a feed motion simultaneously. During machining, the rotational speed of the tool holder is controlled. Due to the guiding effect of the guide rail, the moving support assembly, support connecting sleeve, and nut part feed along with the tool holder, making the feed speed of the tool holder twice that of the moving support assembly. This ensures that the moving support assembly always remains at the midpoint of the axis of the machined deep hole, keeping the axis of the tool holder coincident with the axis of the machined deep hole. A fixed support assembly is located between the tool head and the moving support assembly, ensuring that the center of the tool head is positioned along the axis of the deep hole.

[0005] While the aforementioned device can solve the problem of deep hole machining and improve efficiency, its fixing effect is poor, and its stable support for extended tool holders is inadequate, thus affecting the machining quality of deep holes. Summary of the Invention

[0006] The purpose of this invention is to provide a deep hole extended tool holder fixing support device with reasonable structural design, novel concept, convenient operation, low processing and manufacturing cost, reduced cost investment, multiple anti-vibration support mechanisms, which can fully guarantee the stability performance of the whole machine, improve the stability and strength of the whole machine support, ensure the horizontal straightness accuracy of the whole machine, and enable the tool holder to move in both horizontal and vertical directions, thus expanding the application range and improving the processing accuracy and efficiency of the processed parts.

[0007] The present invention discloses a deep hole extended tool holder fixing support device, comprising an operating platform, a movable support assembly fixedly installed on the inner side wall of the operating platform, a support frame assembly installed on the side of the movable support assembly, a rapid traversing mechanism installed on the side wall of the support frame assembly, and a tool holder assembly fixedly installed on the side of the rapid traversing mechanism. The movable support assembly, the support frame assembly, the rapid traversing mechanism, and the tool holder assembly are mounted on the surface of the operating platform.

[0008] The lathe spindle is fixedly mounted on the side wall of the operating platform. A movable support assembly is installed in the inner tapered hole of the lathe spindle. The movable support assembly includes a spindle tapered sleeve. The outer tapered surface of the spindle tapered sleeve is connected to the inner tapered hole of the lathe spindle. A tapered roller bearing is installed in the inner hole of the spindle tapered sleeve. A cover is installed on the side wall of the tapered roller bearing. The inner ring assembly of the tapered roller bearing is connected to one end of the support shaft. A movable support sleeve is installed on the axial surface of the support shaft. A nylon bushing is fixedly installed in the movable support sleeve by a fourth fastening screw. The other end of the support shaft is fixedly connected to the support frame assembly. The semicircle of the movable support sleeve is connected to the head of the extended tool holder.

[0009] The main spindle tapered sleeve is installed in the lathe spindle tapered hole for positioning. The outer ring of the tapered roller bearing is installed in the inner hole of the main spindle tapered sleeve, and the inner ring assembly of the tapered roller bearing is integrated with the support shaft, improving the overall working efficiency and preventing separation due to prolonged operation. The tapered roller bearing is equipped with a cover to further prevent axial separation. A nylon bushing is fixedly installed in the movable support sleeve by a fourth fastening screw, which has shock absorption and self-lubricating functions, helping to improve the stability of the machine operation. During operation, the support shaft does not rotate, providing fixed support and guidance.

[0010] The support frame assembly includes a fixed support sleeve, with the other end of the support shaft connected to a small round hole in the fixed support sleeve. The fixed support sleeve is installed on the surface of the support frame, and an adjusting bolt is installed on the side wall of the fixed support sleeve. The adjusting bolt is threadedly connected to a fixing block, which is fixedly installed on the surface of the support frame. The semicircle of the fixed support sleeve is connected to an extended tool holder. A support frame base plate is installed on the bottom surface of the support frame and is connected to the machine tool guide rail. A rapid traverse mechanism is installed on the support frame base plate and is connected to the machine tool rack.

[0011] The rapid traverse mechanism includes a movable slider, on which a sliding pin is mounted. The bottom surface of the sliding pin is fixedly mounted on the machine tool rack by screws.

[0012] The movable support sleeve is installed on the support shaft as a whole. The movable support sleeve adopts a semi-circular structure and is locked at the end of the extended tool bar. The two ends of the extended tool bar are fixed together with fastening screws to realize the function of axial movement. One end of the support shaft is installed in the small round hole of the fixed support sleeve and fixed with fastening screws. It has the function of adjusting the center height and can realize the first-level support of the movable support assembly. The support effect is good, the stability is strong, the shock resistance is improved, and it helps to better process the workpiece and improve the processing accuracy of the workpiece.

[0013] The fixed support sleeve has a split upper and lower convex and concave platform structure, connected by several second fastening bolts. The bottom of the fixed support sleeve adopts a convex platform design and is installed on the support frame with a concave platform, and is fixed together with several second fastening bolts. The radial clearance of the fixed support sleeve is adjusted by the adjusting screws on the fixing block, thereby realizing the height adjustment of the fixed support sleeve in the horizontal direction. This makes the operation more flexible and can be adjusted arbitrarily according to the needs of the operator, with a wide range of applications. The bottom surface of the support frame is installed on the machine tool guide rail with several third fastening bolts and the support frame base plate, which can improve the overall stability of the support frame assembly, making it firmly and reliably fixed, further improving the stability of the whole machine, realizing the second-level support function of the support frame assembly, with good fixing effect, stronger support stability, improved shock resistance, and assisting in better processing of workpieces and improving the processing accuracy of the workpieces.

[0014] The rapid traverse mechanism is mounted on the base plate of the support frame using several fastening screws and sliding pins, and the gears mesh with the machine tool rack to enable the fixed support frame and the moving support assembly to move horizontally on the machine tool guide rail surface. This avoids interference between the support device and the workpiece, facilitates the installation and adjustment of the workpiece, and is convenient, flexible, and improves processing efficiency.

[0015] An adjustable cutting tool is installed in the end groove of the extended tool bar, and the other end of the extended tool bar is fixedly connected by a double bracket; the tool post assembly includes a double bracket, which is fixedly installed on both sides of the tool post square tool table, and the tool post square tool table is fixedly connected to the surface of the vertical plate through a shaft, the bottom surface of the vertical plate is connected to the base plate, and the base plate is connected to the slide box base of the machine tool.

[0016] The side walls of the upright plate are respectively fixedly installed with reinforcing ribs; the bottom plate is fixedly installed on the surface of the slide box base by the first fastening bolt and the first positioning pin; the surface of the bottom plate is fixedly installed with ribs.

[0017] The tool holder is constructed using a welded assembly method, with reinforcing ribs welded around its perimeter to ensure overall rigidity and strength. The base plate on the bottom of the tool holder is fixed to the slide box base using multiple first fastening bolts and first locating pins, ensuring the overall stability and strength of the tool holder assembly. The extended tool shank is fixed to the double support using several second locating pins. After the extended tool shank and double support are assembled, the upper and lower surfaces of the double support bracket shank's handle require secondary machining to ensure parallelism, perpendicularity, and equal height between the double support and the extended tool shank, guaranteeing the overall horizontal straightness accuracy of the tool holder assembly. This improves the machining accuracy of the workpiece and fully guarantees its machining quality. The machining tool shank is mounted on the tool holder via the double support and secured with tool holder fastening screws, ensuring the machining tool shank can move horizontally and vertically. An adjustable turning tool is included, utilizing the differential properties of the thread to achieve fine-tuning, ensuring precise machining of internal holes.

[0018] Beneficial effects of this invention:

[0019] 1) The main spindle tapered sleeve is installed in the lathe spindle tapered hole for positioning; the outer ring of the tapered roller bearing is installed in the inner hole of the main spindle tapered sleeve, and the inner ring assembly of the tapered roller bearing is integrated with the support shaft, improving the overall working efficiency and preventing separation due to prolonged operation; the tapered roller bearing is equipped with a cover to further prevent axial separation; and a nylon bushing is fixedly installed in the movable support sleeve by the fourth fastening screw, which has shock absorption and self-lubricating effects, helping to improve the stability of the whole machine operation. During operation, the support shaft does not rotate, providing fixed support and guidance.

[0020] 2) The support frame assembly includes a fixed support sleeve, the other end of the support shaft is connected to the small round hole of the fixed support sleeve, the fixed support sleeve is installed on the surface of the support frame, and an adjusting bolt is installed on the side wall of the fixed support sleeve. The adjusting bolt is threadedly connected to the fixing block, and the fixing block is fixedly installed on the surface of the support frame. The semicircle of the fixed support sleeve is connected to the extended tool bar. A support frame base plate is installed on the bottom surface of the support frame, and the support frame base plate is connected to the machine tool guide rail. A rapid traverse mechanism is installed on the support frame base plate and is connected to the machine tool rack.

[0021] 3) The movable support sleeve is installed on the support shaft as a whole. The movable support sleeve adopts a semi-circular structure and is locked at the end of the extended tool bar. The two ends of the extended tool bar are fixed together with fastening screws to realize the function of axial movement. One end of the support shaft is installed in the small round hole of the fixed support sleeve and fixed with fastening screws. It has the function of adjusting the center height and can realize the first-level support of the movable support assembly. The support effect is good, the stability is strong, the shock resistance is improved, and it helps to better process the workpiece and improve the processing accuracy of the workpiece.

[0022] 4) The fixed support sleeve has a split upper and lower convex and concave platform structure, connected by several second fastening bolts. The bottom of the fixed support sleeve adopts a convex platform design and is installed on the support frame with a concave platform. It is fixed together with several second fastening bolts. The radial clearance of the fixed support sleeve is adjusted by the adjusting screws on the fixing block, which realizes the height adjustment of the fixed support sleeve in the horizontal direction. The operation is more flexible and can be adjusted arbitrarily according to the needs of the operator, making it widely applicable. The bottom surface of the support frame is installed on the machine tool guide rail with several third fastening bolts and the support frame base plate. This can improve the overall stability of the support frame assembly, making it firmly and reliably fixed, further improving the stability of the whole machine, realizing the second-level support function of the support frame assembly, with good fixing effect, stronger support stability, improved shock resistance, and assisting in better processing of workpieces and improving the processing accuracy of the workpieces.

[0023] 5) The rapid traverse mechanism is mounted on the base plate of the support frame with several fastening screws and sliding pins, and the gears mesh with the machine tool rack to realize the horizontal movement of the fixed support frame and the moving support assembly on the machine tool guide rail surface, avoiding interference between the support device and the workpiece, facilitating the installation and adjustment of the workpiece, making the operation convenient and flexible, and improving the processing efficiency.

[0024] 6) The square tool holder is manufactured using a welded assembly method, with reinforcing ribs welded around its perimeter to ensure overall rigidity and strength. The base plate on the bottom of the square tool holder is fixed to the slide box base using multiple first fastening bolts and first locating pins to ensure the overall stability and strength of the tool holder assembly. The extended tool shank is fixed to the double bracket using several second locating pins. After the extended tool shank and double bracket are assembled, the upper and lower surfaces of the double bracket shank handle need to be machined to ensure that the double bracket and extended tool shank are parallel, perpendicular, and at the same height, ensuring the overall horizontal straightness accuracy of the tool holder assembly; improving the machining accuracy of the workpiece and fully guaranteeing the machining quality of the workpiece; the machining tool shank is mounted on the square tool holder via the double bracket and fixed with tool holder fastening screws to ensure that the machining tool shank can move horizontally and vertically; the adjustable turning tool utilizes the properties of thread differential to achieve tool fine adjustment, ensuring precise machining of internal holes.

[0025] 7) The device has a reasonable structural design, novel concept, convenient operation, low processing and manufacturing cost, and reduced cost investment. It is equipped with multiple anti-vibration support mechanisms, which can fully guarantee the stability of the whole machine, improve the stability and strength of the whole machine support, ensure the horizontal straightness accuracy of the whole machine, and the tool bar can move in both horizontal and vertical directions, expanding the application range, improving the processing accuracy of the workpiece, and increasing the processing efficiency. It has been put into use and the effect is good, and it is worth promoting and applying it on a large scale. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the tool holder assembly in this invention;

[0028] Figure 3 This is a schematic diagram of the installation structure of the machining tool holder and double support in the tool holder assembly of the present invention;

[0029] Figure 4 This is a schematic diagram of the adjustable turning tool in the tool holder assembly of the present invention;

[0030] Figure 5 This is a schematic diagram of the installation structure of the tool holder base and the tool holder in the tool holder assembly of the present invention;

[0031] Figure 6 This is a schematic diagram of the double bracket structure in the tool holder assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the support frame assembly in this invention;

[0033] Figure 8 This is a schematic diagram of the rapid movement mechanism in this invention;

[0034] Figure 9 This is a schematic diagram of the structure of the movable support component in this invention;

[0035] Figure 10 This is a schematic diagram of the structure of the movable support sleeve in the movable support assembly of the present invention.

[0036] In the diagram: 1. Slide box base; 2. Base plate; 3. Rib plate; 4. Vertical plate; 5. Square tool holder; 6. Shaft; 7. Reinforcing rib plate; 8. First positioning pin; 9. First fastening bolt; 10. Extended tool holder; 11. Second positioning pin; 12. Double bracket; 13. First fastening screw; 14. Second fastening screw; 15. Adjustable cutting tool; 16. Adjusting screw; 17. Tool holder base; 18. Tool holder; 19. Support frame; 20. Adjusting screw; 21. Fixing block; 22. Nut; 23. Fixing support sleeve; 24. Second... Fastening bolt 24, hex bolt 25, pressure plate 26, third fastening bolt 27, rapid traverse mechanism 28, third fastening screw 29, moving support sleeve 30, fourth fastening screw 301, nylon bushing 31, support shaft 32, cover 33, tapered roller bearing 34, spindle taper sleeve 35, lathe spindle 36, machined part 37, tool post assembly 38, support frame assembly 39, moving support assembly 40, operating platform 41, machine tool guide rail 42. Detailed Implementation

[0037] Example 1.

[0038] The following will be combined with the appendix Figure 1-10 The present invention will be further described below.

[0039] This invention includes a slide box base 1, a base plate 2, a vertical plate 4, a square tool holder 5, a shaft 6, a first fastening bolt 9, an extended tool holder 10, a second positioning pin 11, a double bracket 12, a first fastening screw 13, a second fastening screw 14, an adjustable lathe tool 15, an adjusting screw 16, a tool holder base 17, a tool holder 18, a support frame 19, an adjusting screw 20, a fixing block 21, a nut 22, a fixing support sleeve 23, a second fastening bolt 24, a hex bolt 25, a pressure plate 26, a third fastening bolt 27, a rapid traversing mechanism 28, a third fastening screw 29, a moving support sleeve 30, a fourth fastening screw 301, a nylon bushing 31, a support shaft 32, a cover 33, and a circular... The components include a tapered roller bearing 34, a spindle tapered sleeve 35, a lathe spindle 36, a workpiece 37, a tool post assembly 38, a support frame assembly 39, a moving support assembly 40, an operating platform 41, and a machine tool guide rail 42. Specifically, the structure includes an operating platform 41, with a moving support assembly 40 fixedly installed on the inner wall of the operating platform 41. A support frame assembly 39 is installed on the side of the moving support assembly 40, a rapid traverse mechanism 28 is installed on the side wall of the support frame assembly 39, and a tool post assembly 38 is fixedly installed on the side of the rapid traverse mechanism 28. The moving support assembly 40, support frame assembly 39, rapid traverse mechanism 28, and tool post assembly 38 are mounted on the surface of the operating platform 41.

[0040] The operating platform 41 has a lathe spindle 36 fixedly mounted on its side wall. A movable support assembly 40 is installed in the inner tapered hole of the lathe spindle 36. The movable support assembly 40 includes a spindle tapered sleeve 35. The outer tapered surface of the spindle tapered sleeve 35 is connected to the inner tapered hole of the lathe spindle 36. A tapered roller bearing 34 is installed in the inner hole of the spindle tapered sleeve 35. A cover 33 is installed on the side wall of the tapered roller bearing 34. The inner ring assembly of the tapered roller bearing 34 is connected to one end of the support shaft 32. A movable support sleeve 30 is installed on the axial surface of the support shaft 32. A nylon bushing 31 is fixedly installed in the movable support sleeve 30 by a fourth fastening screw 301. The other end of the support shaft 32 is fixedly connected to the support frame assembly 39. The semicircle of the movable support sleeve 30 is connected to the head of the extended tool holder 10.

[0041] The support frame assembly 39 includes a fixed support sleeve 23. The other end of the support shaft 32 is connected to a small round hole in the fixed support sleeve 23. The fixed support sleeve 23 is installed on the surface of the support frame 19. An adjusting bolt 20 is installed on the side wall of the fixed support sleeve 23. The adjusting bolt 20 is threadedly connected to a fixing block 21. The fixing block 21 is fixedly installed on the surface of the support frame 19. The semicircle of the fixed support sleeve 23 is connected to the extended tool bar 10. A support frame base plate 1901 is installed on the bottom surface of the support frame 19. The support frame base plate 1901 is connected to the machine tool guide rail 42. A rapid traverse mechanism 28 is installed on the support frame base plate 1901 and is connected to the machine tool rack.

[0042] The rapid traversal mechanism 28 includes a movable slider 2802, on which a sliding pin 2801 is mounted. The bottom surface of the sliding pin 2801 is fixedly mounted on the machine tool rack by screws.

[0043] An adjustable cutting tool 15 is installed in the end groove of the extended tool bar 10, and the other end of the extended tool bar 10 is fixedly connected by a double bracket 12; the tool post assembly 38 includes a double bracket 12, which is fixedly installed on both sides of the tool post square tool table 5. The tool post square tool table 5 is fixedly connected to the surface of the vertical plate 4 through a shaft 6. The bottom surface of the vertical plate 4 is connected to the base plate 2, and the base plate 2 is connected to the slide box base 1 of the machine tool.

[0044] Instructions for use: 1) Before use, the double support 12 with the extended tool bar 10 can be clamped by the fastening screws of the tool holder square tool post 5. The middle part and end of the extended tool bar 10 should contact the fixed support sleeve 23 and the movable support sleeve 30 respectively, and the mutual spacing and support clearance should be adjusted. Then, the rapid traverse mechanism 28 should be activated to push the fixed support frame 19 and the movable support assembly 40 forward at the same time, i.e., in the direction of the spindle, to ensure that the inner ring assembly of the tapered roller bearing 34 at the end of the support shaft 32 contacts the outer ring of the spindle tapered sleeve 35. 2) During use, the base plate of the tool holder 2. Connected to the lathe's slide base 1, the extended tool holder 10 moves longitudinally. Under the combined action of the fixed support frame 19 and the moving support assembly 40, the entire device achieves cutting at medium and high speeds, large feed rates, and large depths of cut. The adjustable cutting tool 15 enables radial feed fine-tuning, precisely controlling the diameter of the machined hole. 3) When installing or removing the workpiece, the rapid traverse mechanism 28 is activated, pushing the fixed support frame 19 and the moving support assembly 40 horizontally along the machine tool guideway, avoiding interference between the support device and the workpiece, and facilitating workpiece installation and adjustment. The entire device has a compact structure, is robust and stable, easy to clamp and adjust, has high processing efficiency, and is highly practical, better enabling the machining of deep holes.

[0045] Example 2.

[0046] This invention includes a slide box base 1, a base plate 2, a stiffening plate 3, a vertical plate 4, a square tool holder 5, a shaft 6, a reinforcing stiffening plate 7, a first positioning pin 8, a first fastening bolt 9, an extended tool holder 10, a second positioning pin 11, a double bracket 12, a first fastening screw 13, a second fastening screw 14, an adjustable cutting tool 15, an adjusting screw 16, a tool holder base 17, a tool holder 18, a support frame 19, an adjusting screw 20, a fixing block 21, a nut 22, a fixing support sleeve 23, a second fastening bolt 24, a hex bolt 25, a pressure plate 26, a third fastening bolt 27, a rapid traversing mechanism 28, a third fastening screw 29, a moving support sleeve 30, a fourth fastening screw 301, a nylon bushing 31, and a support shaft 3. 2. A cover 33, a tapered roller bearing 34, a spindle tapered sleeve 35, a lathe spindle 36, a workpiece 37, a tool post assembly 38, a support frame assembly 39, a moving support assembly 40, an operating platform 41, and a machine tool guide rail 42. The specific structure includes an operating platform 41, a moving support assembly 40 fixedly installed on the inner wall of the operating platform 41, a support frame assembly 39 installed on the side of the moving support assembly 40, a rapid traverse mechanism 28 installed on the side wall of the support frame assembly 39, and a tool post assembly 38 fixedly installed on the side of the rapid traverse mechanism 28. The moving support assembly 40, the support frame assembly 39, the rapid traverse mechanism 28, and the tool post assembly 38 are mounted on the surface of the operating platform 41.

[0047] The operating platform 41 has a lathe spindle 36 fixedly mounted on its side wall. A movable support assembly 40 is installed in the inner tapered hole of the lathe spindle 36. The movable support assembly 40 includes a spindle tapered sleeve 35. The outer tapered surface of the spindle tapered sleeve 35 is connected to the inner tapered hole of the lathe spindle 36. A tapered roller bearing 34 is installed in the inner hole of the spindle tapered sleeve 35. A cover 33 is installed on the side wall of the tapered roller bearing 34. The inner ring assembly of the tapered roller bearing 34 is connected to one end of the support shaft 32. A movable support sleeve 30 is installed on the axial surface of the support shaft 32. A nylon bushing 31 is fixedly installed in the movable support sleeve 30 by a fourth fastening screw 301. The other end of the support shaft 32 is fixedly connected to the support frame assembly 39. The semicircle of the movable support sleeve 30 is connected to the head of the extended tool holder 10.

[0048] The support frame assembly 39 includes a fixed support sleeve 23. The other end of the support shaft 32 is connected to a small round hole in the fixed support sleeve 23. The fixed support sleeve 23 is installed on the surface of the support frame 19. An adjusting bolt 20 is installed on the side wall of the fixed support sleeve 23. The adjusting bolt 20 is threadedly connected to a fixing block 21. The fixing block 21 is fixedly installed on the surface of the support frame 19. The semicircle of the fixed support sleeve 23 is connected to the extended tool bar 10. A support frame base plate 1901 is installed on the bottom surface of the support frame 19. The support frame base plate 1901 is connected to the machine tool guide rail 42. A rapid traverse mechanism 28 is installed on the support frame base plate 1901 and is connected to the machine tool rack.

[0049] The rapid traversal mechanism 28 includes a movable slider 2802, on which a sliding pin 2801 is mounted. The bottom surface of the sliding pin 2801 is fixedly mounted on the machine tool rack by screws.

[0050] An adjustable cutting tool 15 is installed in the end groove of the extended tool bar 10, and the other end of the extended tool bar 10 is fixedly connected by a double bracket 12; the tool post assembly 38 includes a double bracket 12, which is fixedly installed on both sides of the tool post square tool table 5. The tool post square tool table 5 is fixedly connected to the surface of the vertical plate 4 through a shaft 6. The bottom surface of the vertical plate 4 is connected to the base plate 2, and the base plate 2 is connected to the slide box base 1 of the machine tool.

[0051] The side walls of the upright plate 4 are respectively fixedly installed with reinforcing ribs 7; the bottom plate 2 is fixedly installed on the surface of the slide box base 1 by the first fastening bolt 9 and the first positioning pin 8; the surface of the bottom plate 2 is fixedly installed with reinforcing ribs 3.

[0052] Instructions for use: 1) Before use, the double support 12 with the extended tool bar 10 can be clamped by the fastening screws of the tool holder square tool post 5. The middle part and end of the extended tool bar 10 should contact the fixed support sleeve 23 and the movable support sleeve 30 respectively, and the mutual spacing and support clearance should be adjusted. Then, the rapid traverse mechanism 28 should be activated to push the fixed support frame 19 and the movable support assembly 40 forward at the same time, i.e., in the direction of the spindle, to ensure that the inner ring assembly of the tapered roller bearing 34 at the end of the support shaft 32 contacts the outer ring of the spindle tapered sleeve 35. 2) During use, the base plate of the tool holder 2. Connected to the lathe's slide box base 1, the extended tool holder 10 moves longitudinally. Under the combined action of the fixed support frame 19 and the moving support assembly 40, the entire device achieves cutting machining at medium and high speeds, large feed rates, and large depths of cut. The adjustable cutting tool 15 enables radial feed fine-tuning, precisely controlling the diameter of the machined hole. 3) When installing or removing the workpiece, the rapid traverse mechanism 28 is activated, pushing the fixed support frame 19 and the moving support assembly 40 horizontally along the machine tool guideway, avoiding interference between the support device and the workpiece, and facilitating workpiece installation and adjustment. The entire device has a compact structure, is robust and stable, easy to clamp and adjust, has high processing efficiency, and is highly practical, better enabling the machining of deep holes. The reinforcing ribs 7 improve the strength of the vertical plate 4.

Claims

1. A deep-hole extended tool holder fixing support device, comprising an operating platform (41), characterized in that: A movable support assembly (40) is fixedly installed on the inner wall of the operating platform (41). A support frame assembly (39) is installed on the side of the movable support assembly (40). A rapid traversing mechanism (28) is installed on the side wall of the support frame assembly (39). A tool holder assembly (38) is fixedly installed on the side of the rapid traversing mechanism (28). The movable support assembly (40), the support frame assembly (39), the rapid traversing mechanism (28), and the tool holder assembly (38) are installed on the surface of the operating platform (41). A lathe is fixedly installed on the side wall of the operating platform (41). A movable support assembly (40) is installed in the inner tapered hole of the lathe spindle (36). The movable support assembly (40) includes a spindle tapered sleeve (35). The spindle tapered sleeve (35) is installed in the inner tapered hole of the lathe spindle (36). The outer tapered surface of the spindle tapered sleeve (35) is connected to the inner tapered hole of the lathe spindle (36). A tapered roller bearing (34) is installed in the inner hole of the spindle tapered sleeve (35). A cover (33) is installed on the side wall of the tapered roller bearing (34). The inner ring assembly of the tapered roller bearing (34) is connected to one end of the support shaft (32). A movable support sleeve (30) is mounted on the shaft surface of the shaft (32). A nylon bushing (31) is fixedly mounted inside the movable support sleeve (30) by a fourth fastening screw (301). The other end of the support shaft (32) is fixedly connected to the support frame assembly (39). The semicircle of the movable support sleeve (30) is connected to the head of the extended tool bar (10). The support frame assembly (39) includes a fixed support sleeve (23). The other end of the support shaft (32) is connected to the small round hole of the fixed support sleeve (23). The fixed support sleeve (23) is mounted on the surface of the support frame (19). On the side wall of the fixed support sleeve (23), an adjusting bolt (20) is installed. The adjusting bolt (20) is threadedly connected to the fixing block (21). The fixing block (21) is fixedly installed on the surface of the support frame (19). The semicircle of the fixed support sleeve (23) is connected to the extended tool bar (10). The bottom surface of the support frame (19) is equipped with a support frame base plate (1901). The support frame base plate (1901) is connected to the machine tool guide rail (42). The rapid traverse mechanism (28) is installed on the support frame base plate (1901). The rapid traverse mechanism (28) is connected to the machine tool rack.

2. The deep hole extended tool holder fixing support device as described in claim 1, characterized in that: The rapid traversal mechanism (28) includes a movable slider (2802), on which a sliding pin (2801) is mounted. The bottom surface of the sliding pin (2801) is fixedly mounted on the machine tool rack by screws.

3. The deep hole extended tool holder fixing support device as described in claim 2, characterized in that: An adjustable cutting tool (15) is installed in the end groove of the extended tool bar (10), and the other end of the extended tool bar (10) is fixedly connected by a double bracket (12); the tool post assembly (38) includes a double bracket (12), which is fixedly installed on both sides of the tool post square tool table (5). The tool post square tool table (5) is fixedly connected to the surface of the vertical plate (4) through a shaft (6). The bottom surface of the vertical plate (4) is connected to the base plate (2), and the base plate (2) is connected to the slide box base (1) of the machine tool.

4. The deep hole extended tool holder fixing support device as described in claim 3, characterized in that: The side walls of the upright plate (4) are respectively fixedly installed with reinforcing ribs (7); the bottom plate (2) is fixedly installed on the surface of the slide box base (1) by the first positioning pin (8); the surface of the bottom plate (2) is fixedly installed with ribs (3).

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