Deep hole lengthened cutter bar fixing and supporting device

Abstract

The deep hole lengthened cutter bar fixing and supporting device comprises an operation platform, a movable supporting assembly is fixedly installed on the inner side wall face of the operation platform, a supporting frame assembly is installed on the side of the movable supporting assembly, a rapid moving mechanism is installed on the side wall face of the supporting frame assembly, and a cutter rest assembly is fixedly installed on the side of the rapid moving mechanism. The movable supporting assembly, the supporting frame assembly, the rapid moving mechanism and the tool rest assembly are installed on the surface of the operation platform. The machine tool has the beneficial effects that the structural design is reasonable, the conception is novel, the operation is convenient, the machining and manufacturing cost is low, the cost input is reduced, multiple shockproof supporting mechanisms are arranged, the stability performance of the whole machine can be fully guaranteed, the supporting stability and strength of the whole machine are improved, the horizontal linear precision of the whole machine is guaranteed, the cutter bar can move in the horizontal and vertical directions, and the machining efficiency is improved. The application range is expanded, the machining precision of machined parts is improved, and the machining efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of deep hole processing equipment in mechanical manufacturing, in particular to a deep hole lengthened tool rod fixing and supporting device. Background Art

[0002] The deep hole drill extension rod is mainly used for deep hole processing. It can extend the length of the drill bit, allowing the drill bit to reach the position that was originally difficult to reach, and improve the depth and accuracy of the drilling. In mechanical manufacturing, cylindrical holes with a depth of more than ten times the hole diameter are generally called deep holes. The characteristics of deep hole processing include poor tool bar rigidity, low strength, easy vibration during cutting, difficulty in chip removal and cooling and lubrication, and difficulty in judging the cutting process. Using an extension rod can help solve these problems and improve the efficiency and quality of deep hole processing.

[0003] In the existing processing, some inner holes have a diameter of no more than 0.5-0.7m, but are very long, 2m-3m deep. The blank is manufactured by centrifugal casting, and the inner hole surface has problems such as sticky sand, hard spots, and uneven retention. It is easy to produce vibration and "cutting" during cutting, and the processing surface has ripples and tapers. The existing equipment is expensive, and the processing effect is low, which cannot solve the above technical problems.

[0004] The announcement number is: CN106514316B, and the name is: A drill rod support device, which specifically discloses that during processing, the workpiece rotates at high speed, the tool bar rotates at low speed and the tool makes a feed motion, and the rotation speed of the tool bar is controlled during processing. Due to the guiding effect of the guide rail, the mobile support assembly, the support connecting sleeve, and the nut part will make a feed motion with the tool bar, so that the feed speed of the tool bar is twice the feed speed of the mobile support assembly, so that the mobile support assembly is always kept in the middle of the axis length of the deep hole being processed, so that the axis of the tool bar and the axis of the deep hole being processed remain coincident. The fixed support assembly is located between the cutter head and the mobile support assembly, and the fixed support assembly keeps the center of the cutter head at the position of the deep hole axis.

[0005] Although the above device can solve the problem of deep hole processing and improve efficiency, the fixing effect is not good and the stable support effect for the extended tool rod is not good, which further affects the processing quality of the deep hole. Summary of the invention

[0006] The purpose of the present invention is to provide a deep hole extended tool rod fixing support device with reasonable structural design, novel concept, convenient operation, low processing and manufacturing cost, reduced cost investment, and multiple shock-proof support mechanisms, which can fully guarantee the stability performance of the whole machine, improve the stability and strength of the whole machine support, and ensure the horizontal linear accuracy of the whole machine. The tool rod can realize horizontal and vertical movement, expand the scope of use, improve the processing accuracy of the workpiece, and have high processing efficiency.

[0007] The present invention discloses a deep hole lengthened tool rod fixed support device, comprising an operating platform, a movable support assembly is fixedly installed on the inner wall surface of the operating platform, a support frame assembly is installed on the side of the movable support assembly, a rapid moving mechanism is installed on the side wall surface of the support frame assembly, a tool holder assembly is fixedly installed on the side position of the rapid moving mechanism, and the movable support assembly, the support frame assembly, the rapid moving mechanism and the tool holder assembly are installed on the surface of the operating platform.

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

[0009] The provided spindle taper sleeve can be installed in the spindle taper hole of the lathe to play a positioning role; the outer ring of the tapered roller bearing is installed in the inner hole of the spindle taper sleeve, and the inner ring assembly of the tapered roller bearing is installed as a whole with the support shaft, so as to improve the overall working effect and prevent the two from being separated due to excessive working time; the tapered roller bearing is installed with a baffle cover to further prevent the tapered roller bearing from axially disengaging; 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, and helps to improve the stability of the whole machine operation; and when working, the support shaft does not rotate, so it plays a fixed support and guiding role.

[0010] The support frame assembly includes a fixed support sleeve, the other end of the support shaft is connected to the small circular hole of the fixed support sleeve, the fixed support sleeve is installed on the surface of the support frame, the side wall of the fixed support sleeve is installed with an adjusting bolt, the adjusting bolt is connected to the thread of the fixed block, and the fixed block is fixedly installed on the surface of the support frame; the semicircle of the fixed support sleeve is connected to the extended tool rod; the bottom surface of the support frame is installed with a support frame base plate, and the support frame base plate is connected to the machine tool guide rail; the rapid moving mechanism is installed on the support frame base plate, and the rapid moving mechanism is connected to the machine tool rack.

[0011] The fast moving mechanism comprises a moving slide block, a sliding pin is installed on the moving slide block, and the bottom surface of the sliding pin is fixedly installed on the machine tool rack by screws.

[0012] A movable support sleeve is set, and the movable support sleeve is installed on the support shaft as a whole, and the movable support sleeve adopts a semicircular structure and is clamped in the end of the extended tool rod. The two sides of the end of the extended tool rod are fixed together by fastening screws to realize the function of axial movement; one end of the support shaft is installed in the small circular hole of the fixed support sleeve and fixed with a fastening screw. It has the function of adjusting the center height, and can realize the function of the first-level support of the movable support assembly. It has good supporting effect, strong stability, and improved seismic performance, which assists in better processing of the workpiece and improves the processing accuracy of the workpiece.

[0013] The fixed support sleeve as a whole is a convex and concave structure divided into upper and lower parts, which is connected by several second fastening bolts; the bottom of the fixed support sleeve adopts a convex platform, which is installed on a support frame with a concave platform and fixed together with several second fastening bolts, and the radial clearance of the fixed support sleeve is adjusted by the adjusting screw arranged on the fixing block, that is, the height adjustment of the fixed support sleeve in the horizontal direction is realized, the operation is more flexible, and it can be adjusted arbitrarily according to the needs of the operator, and the application range is wide; the bottom surface of the support frame is installed on the machine tool guide rail with several third fastening bolts and the support frame bottom plate, which can improve the overall stability of the support frame assembly, fix firmly and reliably, further improve the stability of the whole machine, realize the role of the second-level support of the support frame assembly, have good fixing effect, stronger support stability, and improved seismic performance, which assists in better processing of workpieces and improves the processing accuracy of workpieces.

[0014] The quick moving mechanism is installed on the bottom plate of the support frame with a number of fastening screws and sliding pins, and the gear is meshed with the machine tool rack to achieve horizontal movement of the fixed support frame and the mobile support assembly on the machine tool guide surface, avoiding interference between the support device and the workpiece, facilitating the installation and adjustment of the workpiece, and being easy and flexible to operate, thereby improving processing efficiency.

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

[0016] The side wall surfaces of the vertical plates are respectively fixedly mounted with reinforcing ribs; the bottom plate is fixedly mounted on the surface of the slide box base by means of a first fastening bolt and a first positioning pin; and the surface of the bottom plate is fixedly mounted with ribs.

[0017] The tool holder square tool platform is set up, and the tool holder square tool platform is manufactured as a whole by assembly welding, and reinforcing ribs are welded around to ensure the overall rigidity and strength; the bottom plate set on the bottom surface of the tool holder square tool platform is fixed to the slide box base by multiple first fastening bolts and first locating pins to ensure the overall stability and strength of the tool holder assembly; the extended tool rod and the double bracket are fixed by several second locating pins. After the extended tool rod and the double bracket are installed and combined, the upper and lower surfaces of the double bracket bracket handle need to be secondary processed to ensure that the double bracket and the extended tool rod are parallel, vertical, and have the same height, so as to ensure the overall horizontal straight line accuracy of the tool holder assembly; improve the processing accuracy of the workpiece and fully guarantee the processing quality of the workpiece; the processing tool rod is installed on the tool holder square tool platform through the double bracket and fixed with the tool platform fastening screws to ensure that the processing tool rod can realize the horizontal and vertical square movement function; the adjustable turning tool is set up, and the adjustable turning tool utilizes the properties of thread differential to realize the tool fine-tuning function to ensure precise processing of the inner hole.

[0018] Beneficial effects of the present invention: 1) The spindle taper sleeve is provided, and the spindle taper sleeve can be installed in the taper hole of the spindle of the lathe to play a positioning role; the outer ring of the tapered roller bearing is installed in the inner hole of the spindle taper sleeve, and the inner ring assembly of the tapered roller bearing is installed as a whole with the support shaft, so as to improve the overall working effect and prevent the two from being separated due to excessive working time; the tapered roller bearing is installed with a baffle cover, which can further prevent the tapered roller bearing from axially disengaging; and a nylon bushing is fixedly installed in the movable support sleeve by the fourth fastening screw, which has the effects of shock absorption and self-lubrication, and helps to improve the stability of the whole machine operation, and when working, the support shaft does not rotate, which plays a fixed support and guiding role.

[0019] 2) The support frame assembly includes a fixed support sleeve, the other end of the support shaft is connected to the small circular hole of the fixed support sleeve, the fixed support sleeve is installed on the surface of the support frame, the side wall of the fixed support sleeve is installed with an adjusting bolt, the adjusting bolt is connected to the thread of the fixed block, and the fixed block is fixedly installed on the surface of the support frame; the semicircle of the fixed support sleeve is connected to the extended tool rod; the bottom surface of the support frame is installed with a support frame base plate, and the support frame base plate is connected to the machine tool guide rail; the rapid moving mechanism is installed on the support frame base plate, and the rapid moving mechanism is connected to the machine tool rack.

[0020] 3) A movable support sleeve is provided, and the movable support sleeve is integrally installed on the support shaft, and the movable support sleeve adopts a semicircular structure, which is clamped in the end of the extended tool rod, and the two sides of the end of the extended tool rod are fixed together by fastening screws to realize the function of axial movement; one end of the support shaft is installed in the small circular hole of the fixed support sleeve and fixed with a fastening screw, which has the function of adjusting the center height, and can realize the function of the first-level support of the movable support assembly, with good supporting effect, strong stability, improved seismic performance, and auxiliary better processing of the workpiece and improving the processing accuracy of the workpiece.

[0021] 4) The fixed support sleeve as a whole is a convex and concave structure divided into upper and lower parts, which is connected by several second fastening bolts; the bottom of the fixed support sleeve adopts a convex platform, which is installed on a support frame with a concave platform and fixed together with several second fastening bolts. The radial clearance of the fixed support sleeve is adjusted by the adjusting screws arranged on the fixing block, that is, the height adjustment of the fixed support sleeve in the horizontal direction is realized, the operation is more flexible, and it can be adjusted arbitrarily according to the needs of the operator, and the application range is wide; the bottom surface of the support frame is installed on the machine tool guide rail with several third fastening bolts and the support frame bottom plate, which can improve the overall stability of the support frame assembly, fix it firmly and reliably, further improve the stability of the whole machine, realize the role of the second-level support of the support frame assembly, have good fixing effect, stronger support stability, and improved seismic performance, which can assist in better processing of workpieces and improve the processing accuracy of workpieces.

[0022] 5) The quick moving mechanism is installed on the bottom plate of the support frame with several fastening screws and sliding pins, and the gear is meshed with the machine tool rack to achieve horizontal movement of the fixed support frame and the mobile support assembly on the machine tool guide surface, avoiding interference between the support device and the workpiece, facilitating the installation and adjustment of the workpiece, and making the operation convenient and flexible, thereby improving processing efficiency.

[0023] 6) The tool holder square tool platform is manufactured by assembly welding as a whole, and is welded with reinforcing ribs all around to ensure overall rigidity and strength; the bottom plate set on the bottom surface of the tool holder square tool platform is fixed to the base of the slide box by multiple first fastening bolts and first locating pins to ensure the overall stability and strength of the tool holder assembly; the extended tool rod and the double bracket are fixed by several second locating pins. After the extended tool rod and the double bracket are installed and combined, the upper and lower surfaces of the double bracket bracket handle need to be secondary processed to ensure that the double bracket and the extended tool rod are parallel, vertical, and of the same height to ensure the overall horizontal straight line accuracy of the tool holder assembly; improve the processing accuracy of the workpiece and fully ensure the processing quality of the workpiece; the processing tool rod is installed on the tool holder square tool platform through the double bracket and fixed with the tool platform fastening screws to ensure that the processing tool rod can realize horizontal and vertical directional movement functions; the adjustable turning tool is set, and the adjustable turning tool uses the properties of thread differentials to realize the tool fine-tuning function to ensure precise processing of the inner hole.

[0024] 7) The device has a reasonable structural design, novel concept, convenient operation, low processing and manufacturing cost, and reduces 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, and ensure the horizontal linear accuracy of the whole machine. The tool bar can move in the horizontal and vertical directions, expand the scope of use, improve the processing accuracy of the workpiece, and increase the processing efficiency. It has been put into use with good results and is worthy of large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the tool holder assembly in the present invention; Figure 3 It is a schematic diagram of the installation structure of the machining tool rod and the double bracket in the tool holder assembly of the present invention; Figure 4 It is a structural schematic diagram of an adjustable turning tool in a tool bar assembly of the present invention; Figure 5 It is a schematic diagram of the installation structure of the tool bar base and the tool bar in the tool bar assembly of the present invention; Figure 6 It is a schematic structural diagram of a double bracket in the knife bar assembly of the present invention; Figure 7 It is a structural schematic diagram of the support frame assembly in the present invention; Figure 8 It is a structural schematic diagram of the rapid moving mechanism in the present invention; Fig. 9 It is a structural schematic diagram of the mobile support assembly in the present invention; Fig.10 is a schematic structural diagram of a mobile support sleeve in a mobile support assembly of the present invention, In the figure: slide box base 1, bottom plate 2, rib plate 3, vertical plate 4, square tool table 5, shaft 6, reinforcing rib plate 7, first positioning pin 8, first fastening bolt 9, lengthened tool bar 10, second positioning pin 11, double bracket 12, first fastening screw 13, second fastening screw 14, adjustable turning tool 15, adjusting screw 16, tool bar base 17, tool bar 18, support frame 19, adjusting screw 20, fixing block 21, nut 22, fixing support sleeve 23, second Fastening bolt 24, hexagon socket bolt 25, pressure plate 26, third fastening bolt 27, quick moving mechanism 28, third fastening screw 29, movable support sleeve 30, fourth fastening screw 301, nylon bushing 31, support shaft 32, baffle 33, tapered roller bearing 34, spindle taper sleeve 35, lathe spindle 36, workpiece 37, tool holder assembly 38, support frame assembly 39, movable support assembly 40, operating platform 41, machine tool guide rail 42. DETAILED DESCRIPTION

[0026] Example 1. The following will be combined with the attached Figure 1-10 The present invention is further described.

[0027] The present invention comprises a slide box base 1, a bottom plate 2, a vertical plate 4, a square tool platform 5, a shaft 6, a first fastening bolt 9, an extended tool bar 10, a second positioning pin 11, a double bracket 12, a first fastening screw 13, a second fastening screw 14, an adjustable turning tool 15, an adjusting screw 16, a tool bar base 17, a tool bar 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 hexagonal bolt 25, a pressing plate 26, a third fastening bolt 27, a quick moving 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, a round Tapered roller bearing 34, spindle taper sleeve 35, lathe spindle 36, workpiece 37, tool holder assembly 38, support frame assembly 39, mobile support assembly 40, operating platform 41, machine tool guide rail 42. The specific structure includes operating platform 41, the inner wall surface of the operating platform 41 is fixedly mounted with mobile support assembly 40, the side of mobile support assembly 40 is mounted with support frame assembly 39, the side wall surface of support frame assembly 39 is mounted with rapid moving mechanism 28, the side position of rapid moving mechanism 28 is fixedly mounted with tool holder assembly 38, mobile support assembly 40, support frame assembly 39, rapid moving mechanism 28, tool holder assembly 38 are mounted on the surface of operating platform 41.

[0028] The side wall of the operating platform 41 is fixedly installed with a lathe spindle 36, and 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 taper sleeve 35, and a spindle taper sleeve 35 is installed in the inner tapered hole of the lathe spindle 36. The outer tapered surface of the spindle taper sleeve 35 is connected to the inner tapered hole of the lathe spindle 36, and a tapered roller bearing 34 is installed in the inner hole of the spindle taper sleeve 35, and a baffle 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, and a movable support sleeve 30 is installed on the axial surface of the support shaft 32, and a nylon bushing 31 is fixedly installed in the movable support sleeve 30 by a fourth fastening screw 301, and the other end of the support shaft 32 is fixedly connected to the support frame assembly 39, and the semicircle of the movable support sleeve 30 is connected to the head of the extended tool rod 10.

[0029] 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 installed on the surface of the support frame 19, and the side wall of the fixed support sleeve 23 is installed with an adjusting bolt 20, the adjusting bolt 20 is connected to the thread of the fixed block 21, and the fixed 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 rod 10; the bottom surface of the support frame 19 is installed with a support frame base plate 1901, and the support frame base plate 1901 is connected to the machine tool guide rail 42; the rapid moving mechanism 28 is installed on the support frame base plate 1901, and the rapid moving mechanism 28 is connected to the machine tool rack.

[0030] The fast moving mechanism 28 comprises a moving slider 2802, on which a sliding pin 2801 is mounted, and the bottom surface of the sliding pin 2801 is fixedly mounted on the machine tool rack by screws.

[0031] An adjustable turning tool 15 is installed in the end groove of the extended tool rod 10, and the other end of the extended tool rod 10 is fixedly connected by a double bracket 12; the tool holder assembly 38 includes a double bracket 12, and the double bracket 12 is fixedly installed on both sides of the tool holder square tool table 5, and the tool holder square tool table 5 is fixedly connected to the surface of the vertical plate 4 through the shaft 6, and the bottom surface of the vertical plate 4 is connected to the bottom plate 2, and the bottom plate 2 is connected to the slide box base 1 of the machine tool.

[0032] Instructions for use: 1) Adjustment before use: The double bracket 12 with the extended tool rod 10 can be fixed and clamped by the fastening screws of the tool holder square tool table 5. The middle part and the end of the extended tool rod 10 are respectively in contact with the fixed support sleeve 23 and the movable support sleeve 30 to adjust the mutual spacing and support gap; then start the fast moving mechanism 28 to push the fixed support frame 19 and the movable support assembly 40 forward at the same time, that is, to move 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 is in contact with the outer ring of the spindle tapered sleeve 35; 2) When in use, the bottom plate of the tool holder 2 is connected to the slide box base 1 of the lathe, and the tool rod 10 is extended to move longitudinally. Under the joint action of the fixed support frame 19 and the mobile support assembly 40, the entire device can realize cutting processing at medium and high speeds, large feed rates, and large cutting depths. The radial feed fine-tuning function is realized through the adjustable turning tool 15 to accurately control the diameter of the processed hole; 3) When installing or disassembling the workpiece, start the fast moving mechanism 28 to push the fixed support frame 19 and the mobile support assembly 40 to move horizontally on the machine tool guide surface to avoid interference between the support device and the workpiece, which is convenient for the installation and adjustment of the workpiece. The entire device has a compact structure, is firm and stable, is easy to clamp and adjust, has high processing efficiency, and is highly practical, which can better realize the processing of deep holes.

[0033] Example 2. The present invention comprises a slide box base 1, a bottom plate 2, a rib plate 3, a vertical plate 4, a square tool platform 5, a shaft 6, a reinforcing rib plate 7, a first positioning pin 8, a first fastening bolt 9, an extended tool bar 10, a second positioning pin 11, a double bracket 12, a first fastening screw 13, a second fastening screw 14, an adjustable turning tool 15, an adjusting screw 16, a tool bar base 17, a tool bar 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 hexagonal bolt 25, a pressing plate 26, a third fastening bolt 27, a quick moving 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. Block cover 33, tapered roller bearing 34, spindle taper sleeve 35, lathe spindle 36, workpiece 37, tool holder assembly 38, support frame assembly 39, mobile support assembly 40, operating platform 41, machine tool guide rail 42. The specific structure includes operating platform 41. Mobile support assembly 40 is fixedly installed on the inner wall of operating platform 41. Support frame assembly 39 is installed on the side of mobile support assembly 40. Rapid moving mechanism 28 is installed on the side wall of support frame assembly 39. Tool holder assembly 38 is fixedly installed on the side of rapid moving mechanism 28. Mobile support assembly 40, support frame assembly 39, rapid moving mechanism 28 and tool holder assembly 38 are installed on the surface of operating platform 41.

[0034] The side wall of the operating platform 41 is fixedly installed with a lathe spindle 36, and 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 taper sleeve 35, and a spindle taper sleeve 35 is installed in the inner tapered hole of the lathe spindle 36. The outer tapered surface of the spindle taper sleeve 35 is connected to the inner tapered hole of the lathe spindle 36, and a tapered roller bearing 34 is installed in the inner hole of the spindle taper sleeve 35, and a baffle 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, and a movable support sleeve 30 is installed on the axial surface of the support shaft 32, and a nylon bushing 31 is fixedly installed in the movable support sleeve 30 by a fourth fastening screw 301, and the other end of the support shaft 32 is fixedly connected to the support frame assembly 39, and the semicircle of the movable support sleeve 30 is connected to the head of the extended tool rod 10.

[0035] 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 installed on the surface of the support frame 19, and the side wall of the fixed support sleeve 23 is installed with an adjusting bolt 20, the adjusting bolt 20 is connected to the thread of the fixed block 21, and the fixed 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 rod 10; the bottom surface of the support frame 19 is installed with a support frame base plate 1901, and the support frame base plate 1901 is connected to the machine tool guide rail 42; the rapid moving mechanism 28 is installed on the support frame base plate 1901, and the rapid moving mechanism 28 is connected to the machine tool rack.

[0036] The fast moving mechanism 28 comprises a moving slider 2802, on which a sliding pin 2801 is mounted, and the bottom surface of the sliding pin 2801 is fixedly mounted on the machine tool rack by screws.

[0037] An adjustable turning tool 15 is installed in the end groove of the extended tool rod 10, and the other end of the extended tool rod 10 is fixedly connected by a double bracket 12; the tool holder assembly 38 includes a double bracket 12, and the double bracket 12 is fixedly installed on both sides of the tool holder square tool table 5, and the tool holder square tool table 5 is fixedly connected to the surface of the vertical plate 4 through the shaft 6, and the bottom surface of the vertical plate 4 is connected to the bottom plate 2, and the bottom plate 2 is connected to the slide box base 1 of the machine tool.

[0038] The side walls of the vertical plates 4 are respectively fixedly mounted with reinforcing ribs 7 ; the bottom plate 2 is fixedly mounted on the surface of the slide box base 1 by means of a first fastening bolt 9 and a first positioning pin 8 ; and the surface of the bottom plate 2 is fixedly mounted with ribs 3 .

[0039] Instructions for use: 1) Adjustment before use: The double bracket 12 with the extended tool rod 10 can be fixed and clamped by the fastening screws of the tool holder square tool table 5. The middle part and the end of the extended tool rod 10 are respectively in contact with the fixed support sleeve 23 and the movable support sleeve 30 to adjust the mutual spacing and support gap; then start the fast moving mechanism 28 to push the fixed support frame 19 and the movable support assembly 40 forward at the same time, that is, to move 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 is in contact with the outer ring of the spindle tapered sleeve 35; 2) When in use, the bottom plate of the tool holder 2 is connected to the slide box base 1 of the lathe, and the tool rod 10 is lengthened to move longitudinally. Under the joint action of the fixed support frame 19 and the mobile support assembly 40, the entire device can realize cutting processing at medium and high speeds, large feed rates, and large cutting depths. The radial feed fine-tuning function is realized through the adjustable turning tool 15 to accurately control the diameter of the processed hole; 3) When installing or disassembling the workpiece, start the fast moving mechanism 28 to push the fixed support frame 19 and the mobile support assembly 40 to move horizontally on the machine tool guide surface to avoid interference between the support device and the workpiece, which is convenient for the installation and adjustment of the workpiece. The entire device has a compact structure, is firm and stable, is easy to clamp and adjust, has high processing efficiency, and is highly practical, and can better realize the processing of deep holes. The set reinforcing rib plate 7 can increase the strength of the vertical plate 4.

Claims

1. A deep hole lengthened tool bar fixing support device, comprising an operating platform (41), characterized in that: A movable support assembly (40) is fixedly mounted on the inner wall surface of the operating platform (41); a support frame assembly (39) is mounted on the side of the movable support assembly (40); a rapid moving mechanism (28) is mounted on the side wall surface of the support frame assembly (39); a tool holder assembly (38) is fixedly mounted on the side position of the rapid moving mechanism (28); and the movable support assembly (40), the support frame assembly (39), the rapid moving mechanism (28), and the tool holder assembly (38) are mounted on the surface of the operating platform (41).

2. A deep hole lengthened tool bar fixing support device as claimed in claim 1, characterized in that: The side wall of the operating platform (41) is fixedly mounted with a lathe spindle (36), and a movable support assembly (40) is mounted in the inner tapered hole of the lathe spindle (36). The movable support assembly (40) comprises a spindle taper sleeve (35), and a spindle taper sleeve (35) is mounted in the inner tapered hole of the lathe spindle (36). The outer tapered surface of the spindle taper sleeve (35) is connected to the inner tapered hole of the lathe spindle (36), and a tapered roller bearing (34) is mounted in the inner hole of the spindle taper sleeve (35). A retaining cover (33) is installed on the side wall of the 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) via a fourth fastening screw (301); the other end of the support shaft (32) is fixedly connected to the support frame assembly (39); and the semicircle of the movable support sleeve (30) is connected to the head of the extended knife rod (10).

3. A deep hole lengthened tool bar fixing support device as claimed in claim 2, characterized in that: The support frame assembly (39) comprises a fixed support sleeve (23), the other end of the support shaft (32) is connected to the small circular hole of the fixed support sleeve (23), the fixed support sleeve (23) is installed on the surface of the support frame (19), the side wall surface of the fixed support sleeve (23) is installed with an adjusting bolt (20), the adjusting bolt (20) is connected to the thread of the fixed block (21), and the fixed 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 rod (10); the bottom surface of the support frame (19) is installed with a support frame bottom plate (1901), and the support frame bottom plate (1901) is connected to the machine tool guide rail (42); the rapid moving mechanism (28) is installed on the support frame bottom plate (1901), and the rapid moving mechanism (28) is connected to the machine tool rack.

4. A deep hole lengthened tool bar fixing support device as claimed in claim 3, characterized in that: The rapid moving mechanism (28) comprises a moving slider (2802), a sliding pin (2801) is mounted on the moving slider (2802), and the bottom surface of the sliding pin (2801) is fixedly mounted on the machine tool rack by means of screws.

5. A deep hole lengthened tool bar fixing and supporting device as claimed in claim 4, characterized in that: An adjustable turning tool (15) is installed in the end groove of the extended tool rod (10), and the other end of the extended tool rod (10) is fixedly connected via a double bracket (12); the tool holder assembly (38) includes a double bracket (12), and the double bracket (12) is fixedly installed on both sides of the tool holder square tool table (5), the tool holder square tool table (5) is fixedly connected to the surface of the vertical plate (4) via a shaft (6), the bottom surface of the vertical plate (4) is connected to the bottom plate (2), and the bottom plate (2) is connected to the slide box base (1) of the machine tool.

6. A deep hole lengthened tool bar fixing and supporting device as claimed in claim 5, characterized in that: The side wall surfaces of the vertical plates (4) are respectively fixedly mounted with reinforcing rib plates (7); the bottom plate (2) is fixedly mounted on the surface of the slide box base (1) via a first positioning pin (8); and the surface of the bottom plate (2) is fixedly mounted with a rib plate (3).

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