CN209935960U - Numerical control deep hole keyway milling machine - Google Patents

Abstract

The utility model discloses a numerical control deep hole keyway milling machine, which belongs to the technical field of machine tools. A worktable is installed on the machine bed, a follow-up tailstock is fixed at the front end of the worktable, a main transmission box is arranged behind the machine bed, and a cantilever boring frame extending forward is arranged on the main transmission box. The machine tool electrical cabinet and the machine tool control panel are respectively provided. There is a hydraulic station outside the front end of the machine bed. The length of the cantilever boring frame is more than 10 times its radial dimension. The power source of the milling spindle of the milling shaft box and the milling spindle of the milling shaft box also comes from the main transmission box outside the cantilever boring frame; the workpiece is hoisted and placed on the support frame, and the worktable is moved backward, so that the deep hole of the workpiece is sleeved outside the cantilever boring frame, so that the The front end of the cantilever boring frame is connected to the front end of the worktable, and the size of the cutting tool is adjusted manually. The main transmission box controls the operation of the tool, and the main transmission box controls the movement of the milling shaft box from the rear end of the deep hole workpiece to the front end to realize deep hole milling. .

Description

A CNC deep hole keyway milling machine

technical field

The utility model relates to a numerical control deep hole keyway milling machine, which belongs to the technical field of machine tools.

Background technique

The grooving of deep holes in workpieces with large length-diameter ratios has always been a difficult problem in domestic machining, especially for large workpieces with a length-diameter ratio of more than ten times deep holes. For example, a deep hole workpiece with a length of 5 meters and an inner hole diameter of 0.5 meters cannot be processed by the existing machine tool tools into the elongated hole. At present, the known deep hole machining machine can only process deep holes with a diameter of more than 1 meter, but the machining depth is less than ten meters.

In China, the machining of large and ultra-deep inner hole keyways can only be carried out manually or semi-mechanically, or the workpiece can be processed in sections. The precision of the segmented groove line is sufficient, but it is difficult to ensure the consistency of multiple groove lines, and it is difficult to ensure the accuracy of the keyway in manual and semi-mechanical processing. It not only increases the labor intensity of the staff, but also reduces the processing efficiency of the factory, and can not meet the needs of the market.

Utility model content

In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a numerical control deep hole keyway milling machine. By changing the structure of the machine tool, it cooperates with the machine tool control system to realize the milling of the inner hole surface keyway of large cylindrical parts. Automatic processing, can process the whole pipe body after coupling, can quickly realize the clamping and alignment of the long cylindrical shaft hole, the keyway can be completed at one time, the processing power head is inside the workpiece, and the processing power source is outside the workpiece, reducing the internal processing device. Volume, while ensuring the stability of the cantilever, it increases the working length of the cantilever, improves the processing accuracy, improves the processing efficiency, and meets the needs of the market.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a numerical control deep hole keyway milling machine, comprising a machine bed, a machine tool electrical cabinet, a machine tool control panel, a workbench, a support frame, a tailstock, a main transmission box, a cantilever boring machine The machine bed is a horizontal bed, the two parallel guide rails of the machine bed are installed with a worktable, the front end of the worktable is fixedly installed with a follow-up tailstock, and the worktable is supported by The machine frame supports the deep hole workpiece, the main transmission box is arranged behind the machine bed, and the main transmission box is provided with a cantilever boring frame extending forward. It is connected with various electrical components of the machine tool, and the machine tool control panel is connected to the PLC in the electric cabinet. The machine tool control panel is composed of a numerical control system LCD touch screen and work lights. The machine tool adopts the well-known SIEMENS 828D numerical control system and SIEMENS electric The control system is equipped with a hydraulic station outside the front end of the machine bed. The hydraulic station is fully enclosed. The hydraulic station consists of two sets of pumps, one is used for the lubrication of the bed guide rails, and the other is used to supply oil to the hydraulic cylinders of the machine tool; Wherein, the length of the cantilever boring frame is more than 10 times its radial dimension, and inside the cantilever boring frame is a milling shaft box that drives the front and rear displacement through the main transmission box, and the power source of the milling spindle of the milling shaft box also comes from the cantilever. The main transmission box outside the boring frame;

The worktable is moved to the front end of the machine bed, the workpiece is hoisted and placed on the support frame on the worktable, supported and clamped by the support frame, and the worktable is moved backward so that the deep hole of the workpiece is sleeved outside the cantilever boring frame, so that the cantilever boring frame is The front end is connected with the tailstock at the front end of the worktable to improve the stability of the cantilever boring frame. The milling shaft box is located at the outer end of the deep hole workpiece. The size of the cutting tool can be adjusted manually. The tool operation is controlled by the main transmission box. The back end of the deep hole workpiece moves to the front end to realize deep hole milling.

The main transmission box is provided with an I-shaped seat, a reduction box, a frequency conversion motor, a servo motor, a driving light bar, a driving box shaft seat and a driving screw, and the top of the main transmission box is fixedly connected with a "I"-shaped tool. Type seat, the left and right sides of the middle vertical plate of the I-type seat are respectively fixed with a driving light rod and a driving lead screw through the driving box shaft seat, and the rear end of the right driving screw screw is connected with the servo motor fixed on the main transmission box through a coupling The rear end of the left driving light bar is connected with the output shaft of the reduction box fixed on the main transmission box through the coupling, and the input shaft of the reduction box is connected with a frequency conversion motor through the coupling, and the frequency conversion motor passes through The support plate is fixed on the ground; after the frequency conversion motor, the drive light bar is driven by the reduction box, and the servo motor drives the drive screw by the coupling;

The cantilever boring frame is composed of a cantilever side plate, a cantilever top plate, a butt sleeve, a cantilever shaft seat, a cantilever screw, an inner slide rail, a connecting cover, an expansion sleeve frame, a cantilever light bar and an outer slide rail. The strip-shaped plate body, the cantilever top plate is a rectangular plate body, the front end of the cantilever top plate is fixedly connected with a cylindrical butt joint, the left and right side walls of the cantilever top plate are fixedly connected with the front end of the cantilever side plate, and the tops of the left and right cantilever side plates pass through a number of equally spaced The connection cover is connected. The cantilever top plate, the cantilever side plate and the connection cover form a rectangular cylinder. The length of the rectangular cylinder is ten times greater than the size of its cross-section butt line. On the left and right sides, the rear end of the cantilever side plate is joined with the inner wall of the upper and lower plates of the I-shaped seat, the cantilever side plate is fixedly connected with the I-shaped seat by screws, and the upper and lower ends of the cantilever side plate and the joint surface of the upper and lower plates of the I-shaped seat are provided with Adjustable inclined iron; two upper and lower parallel inner slide rails are arranged on the inner wall of the cantilever side plate, and a cantilever light fixed by the cantilever shaft seat is arranged between the two inner slide rails on the inner wall of the left cantilever side plate A cantilever lead screw fixed by the cantilever shaft seat is arranged between the two inner slide rails on the inner side wall of the right cantilever side plate. The cantilever light bar is fixedly connected with the driving light bar of the main transmission box through the coupling. It is fixedly connected with the driving screw of the main transmission box through the coupling; an outer slide rail is arranged on the outer side wall of the cantilever side plate, and an expansion sleeve frame is arranged in the two cantilever side plates. It is composed of a support frame body, an expansion sleeve slider and a connecting rod. The tops of the front and rear support frame bodies are connected by a pair of connecting rods, and both sides of the front and rear support frame bodies are connected with the inner slide rail of the cantilever side plate through the expansion sleeve slider;

The milling shaft box is located between the front and rear support frame bodies of the inner expansion sleeve frame of the cantilever boring frame. It consists of cylinder, adjusting screw, slider, gear set, bevel gear, main shaft and internal thread block. The left and right sides of the box are connected with the inner slide rail of the cantilever boring frame through the slider. The right side of the box is fixed with a pair of sleeves on the cantilever. The screw nut sleeve of the cantilever screw in the boring frame is driven by the screw nut sleeve to limit the forward and backward movement of the box located on the inner slide rail. The left side of the box is fixed with another pair of cantilever smooth bars that are sleeved in the cantilever boring frame. The light bar tile cover, the front end light bar tile cover on the box body is provided with an inner sliding key outer gear sleeve set on the cantilever light bar, the inner sliding key outer gear sleeve can slide on the cantilever light bar, and pass through the gas inner sliding key. Realize the synchronous operation with the cantilever light bar in the process of sliding back and forth. The box is provided with a gear set that meshes with the inner slide key and the outer gear sleeve. The top of the box is provided with a main shaft sleeve that is inserted into its interior and protrudes from its bottom end. The main shaft is equipped with a rotatable main shaft in the main shaft sleeve. The main shaft meshes with the gear group through the cooperation of the gear and the bevel gear. After the cantilever light bar runs, the main shaft is driven to rotate through the cooperation of the inner sliding key and the outer gear sleeve and the gear. The end sampling BT interface can be installed with various general clamping tools. There is an adjustment screw inserted into the inside of the box next to the main shaft at the top of the box. The adjustment screw is fixedly connected to the box through the screw shaft seat, and the thread on the adjustment screw There is an internal thread block screwed in, the side wall of the thread block is fixedly connected with the spindle sleeve, the square head of the adjusting screw is located on the top surface of the box, and the top surface of the box outside the square head of the screw is provided with a scale Ring, rotate the adjusting screw, the adjusting screw controls the up and down displacement of the main shaft sleeve through the inner thread block, and the main shaft in the main shaft sleeve moves up and down accordingly;

There is a spray head at the bottom of the milling shaft box. The spray head adopts a retractable automatic hose reel. The spray head is sprayed on the edge of the cutting edge. The spray cooling system can be connected with the hydraulic system of the machine tool, or can be set separately;

The rear end of the worktable is provided with a cantilever auxiliary bracket, which is composed of an L-shaped frame body, an L-shaped shaft seat and a roller, and a pair of L-shaped frame bodies are fixedly connected by a connecting plate. The front end of the rod is fixedly connected with the worktable. The ends of the vertical rods of the two L-shaped frame bodies are provided with L-shaped shaft seats. The L-shaped shaft seats are fixed with rollers through the rotating shaft. The two rollers can be moved to the cantilever boring through the translation of the worktable. Below the outer slide rails on the left and right sides of the frame, the cantilever boring frame is assisted by supporting the outer slide rails;

There are three equally spaced arrays of support frames on the worktable, and the support frames are all composed of a support box, a spacing adjustment screw, a sliding table, a top wheel seat, a top wheel, a clamping jaw seat, a clamping jaw and a clamping jaw screw. The support box is fastened on the workbench by screws, and a pair of parallel spacing adjustment screws are arranged between the left and right side walls of the support box. The spacing adjustment screws are fixedly connected to the support box through the screw bearing seat. The spacing adjustment screws The end of the rod protrudes, and through manual adjustment, there are a pair of sliding tables on the left and right sides of the top of the support box that can slide on the top surface. The sliding table is fixedly connected with the nut on the other distance adjusting lead screw. The top of the left and right sliding tables is fixed with a top wheel seat, and the top wheel seat is provided with a rotatable top wheel. There is a gripper seat, and a gripper screw is arranged in the gripper seat. The gripper screw is fixed on the gripper seat through the screw bearing seat. The bottom end of the gripper screw is a protruding lead screw. The top of the lead screw is covered with a nut sleeve, and the end of the nut sleeve is provided with a clamping claw. The distance between the two sliding tables is controlled by adjusting the rotation distance of the lead screw, and the extension distance of the clamping claw is adjusted by adjusting the clamping claw screw. The top wheel seat of the support frame at the front end and the rear end are provided with a top wheel drive motor connected with the top wheel through a reduction box;

The tailstock is composed of a tailstock seat, a bearing cover, a support shaft, a pressing oil cylinder, a hydraulic motor, a support shaft drive box, a rack, a spring, a guide bearing and a drive gear, and the tailstock seat is located on the slide rail of the machine bed. It is fixedly connected with the worktable. The worktable drive motor is installed on the tailstock seat. The worktable drive motor meshes with the internal rack of the machine bed through gears. After driving, it controls the front and rear displacement of the worktable and the tailstock. The tailstock seat There is a pair of bearing cover on the top, the rear bearing cover is fixed on the tailstock seat by screws, the left and right sides of the front bearing cover are pressed on the tailstock seat by four pressing cylinders, and the cylinder rod end of the pressing cylinder is fixed on the tailstock. On the frame seat, the cylinder rod is sleeved with a spring supporting the bearing cover, and a support shaft is inserted into the two bearing covers. The support shaft can slide back and forth in the two bearing covers. The front end is fixed with a support shaft drive box that is sleeved outside the support shaft. The support shaft drive box is provided with a hydraulic motor. The shaft end of the hydraulic motor is inserted into the support shaft drive box, and meshes with the rack of the support shaft through the drive gear to drive the hydraulic pressure. The motor, the support shaft extends or retracts at the rear end of the top of the tailstock, and a rectangular slot is opened at the rear of the top of the tailstock. The rectangular slot is provided with a guide bearing fixed by the bearing seat. When the tailstock moves to the cantilever boring frame , the butt sleeve at the end of the cantilever boring frame is inserted into the bearing cover through the guide of the guide bearing.

The beneficial effects of the utility model are as follows: the domestic problem of difficulty in milling deep hole workpieces with large length and diameter is solved, and a new type of CNC deep hole keyway milling machine is provided. The automatic machining of keyway milling of the inner hole surface of large cylindrical parts can be realized by cooperation. The keyway can be completed at one time, the processing power head is inside the workpiece, and the power source of the power head is outside the workpiece. The size of the power head motor inside the workpiece is omitted, and the volume of the internal processing device is reduced, thereby increasing the length of the deep hole in the workpiece processed by the machine tool. The diameter ratio and the size of the cantilever are increased, and the front, rear, and middle parts of the cantilever are fixed and supported. While ensuring the stability of the cantilever, the working length of the cantilever is improved, the processing accuracy is improved, and the processing efficiency is improved to meet the needs of the market.

Description of drawings

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is an overall side view of the utility model.

FIG. 3 is a schematic structural diagram of the main transmission box of the present invention.

4 is a rear view of the main transmission box of the present invention.

FIG. 5 is a front view of the main transmission box of the present invention.

6 is a top sectional view of the main transmission box of the present invention.

FIG. 7 is a schematic structural diagram of the cantilever boring frame of the present invention.

8 is a front cross-sectional view of the cantilever boring frame of the present invention.

FIG. 9 is a schematic structural diagram of the expansion sleeve frame of the present invention.

FIG. 10 is a schematic structural diagram of the milling axle box of the present invention.

FIG. 11 is a schematic structural diagram of the milling axle box of the present invention.

12 is a side sectional view of the milling axle box of the present invention.

FIG. 13 is a front view of the milling axle box of the present invention.

14 is a bottom cross-sectional view of the milling axle box of the present invention.

FIG. 15 is a schematic structural diagram of the workbench of the present invention.

16 is a schematic structural diagram of the cantilever auxiliary support of the present invention.

17 is a schematic diagram of the structure of the support frame of the present invention.

Figure 18 is a side view of the tailstock of the present invention.

19 is a partial side sectional view of the tailstock of the present invention.

20 is a side sectional view of the tailstock of the present invention.

Labels in the figure:

1. Machine tool bed, 2. Machine tool electrical cabinet, 3. Machine tool control panel, 4. Work table, 5. Support frame, 6. Tailstock, 7. Deep hole workpiece, 8. Main transmission box, 9. Cantilever boring frame , 10, milling axle box, 11, table drive motor;

401, cantilever auxiliary bracket, 4011, L-shaped frame body, 4012, L-shaped axle seat, 4013, roller;

501. Spacing adjustment lead screw, 502, sliding table, 503, top wheel seat, 504, top wheel, 505, clamping jaw seat, 506, clamping jaw, 507, clamping jaw screw, 508, top wheel drive motor;

601, Tailstock, 602, Bearing cover, 603, Support shaft, 604, Clamping cylinder, 605, Hydraulic motor, 606, Support shaft drive box, 607, Rack, 608, Spring, 609, Guide bearing, 6051, drive gear;

801, I-shaped seat, 802, reduction box, 803, frequency conversion motor, 804, servo motor, 805, drive light bar, 806, drive box axle seat, 807, drive screw;

901, cantilever side plate, 902, cantilever top plate, 903, butt sleeve, 904, cantilever shaft seat, 905, cantilever screw, 906, inner slide rail, 907, connecting cover, 908, expansion sleeve, 909, cantilever light bar , 9010, outer slide rail;

9081, support frame body, 9082, expansion sleeve slider, 9083, connecting rod;

1001, smooth bar tile cover, 1002, nut sleeve, 1003, inner slide key outer gear sleeve, 1004, spindle sleeve, 1005, adjusting screw, 1006, slider, 1007, spray head, 1008, cutter, 1009, Gear set, 10010, bevel gear, 10011, main shaft, 10012, female thread block.

Detailed ways

As shown in Figure 1-20, a CNC deep hole keyway milling machine includes a machine bed 1, a machine tool electrical cabinet 2, a machine tool control panel 3, a worktable 4, a support frame 5, a tailstock 6, a main transmission box 8, and a cantilever. The boring frame 9, the milling shaft box 10, the worktable drive motor 11, the machine bed 1 is a horizontal bed, the two parallel guide rails of the machine bed 1 are installed with the worktable 4, and the front end of the worktable 4 is fixedly installed with a follower The tailstock 6, the worktable 4 supports the deep hole workpiece 7 through the support frame 5, the main transmission box 8 is arranged behind the machine bed 1, and the main transmission box 8 is provided with a cantilever boring frame 9 extending forward. 8. There are machine tool electrical cabinet 2 and machine tool control panel 3 on both sides respectively. Machine tool electrical cabinet 2 is connected with various electrical components of the machine tool, machine tool control panel 3 is connected with the PLC in the electrical cabinet 2, and machine tool control panel 3 is touched by the LCD of the numerical control system. It is composed of a control display screen and a work lighting. The machine tool adopts the well-known SIEMENS 828D numerical control system and SIEMENS electronic control system. There is a hydraulic station outside the front end of the machine bed 1. The hydraulic station is fully enclosed, and the hydraulic station consists of two sets It is composed of a pump group, one set is used for lubricating the guide rail of the bed, and the other set is used to supply oil to each hydraulic cylinder of the machine tool; wherein, the length of the cantilever boring frame 9 is greater than 10 times its radial dimension, and inside the cantilever boring frame 9 There is a milling spindle box 10 that drives the front and rear displacement through the main transmission box 8, and the power source of the milling spindle of the milling spindle box 10 also comes from the main transmission box 8 outside the cantilever boring frame 9;

The worktable 4 is moved to the front end of the machine bed 1, the workpiece is hoisted and placed on the support frame 5 on the worktable 4, supported and clamped by the support frame 5, and the worktable 4 is moved backward, so that the deep hole of the workpiece is sleeved on the cantilever boring frame In addition, the front end of the cantilever boring frame 9 is connected with the front end tailstock 6 of the worktable 4 to improve the stability of the cantilever boring frame 9. The milling shaft box 10 is located at the outer end of the deep hole workpiece 7. Manually adjust the size of the lower tool and pass the main transmission box. 8. Control the operation of the tool, and control the milling shaft box 10 to move from the rear end of the deep hole workpiece 7 to the front end through the main transmission box 8 to realize deep hole milling.

The main transmission box 8 is provided with a working type seat 801, a reduction box 802, a frequency conversion motor 803, a servo motor 804, a driving light bar 805, a driving box shaft seat 806 and a driving screw 807, and the top of the main transmission box 8 is fixedly connected There is an I-shaped seat 801 with a "I"-shaped cross-section. The left and right sides of the middle vertical plate of the I-shaped seat 801 are respectively fixed with a driving light rod 805 and a driving screw 807 through the driving box shaft seat 806. After the right driving screw 807 The end is connected with the power end of the servo motor 804 fixed on the main transmission box 8 through the coupling, and the rear end of the left driving light bar 805 is connected with the output shaft of the reduction box 802 fixed on the main transmission box 8 through the coupling The input shaft of the reduction box 802 is connected to a frequency conversion motor 803 through a coupling, and the frequency conversion motor 803 is fixed on the ground through a support plate; the frequency conversion motor 803 drives the light bar 805 through the reduction box 802, and the servo motor 804 runs through the coupling The shaft drives the drive screw 807 to run;

The cantilever boring frame 9 is composed of a cantilever side plate 901, a cantilever top plate 902, a docking sleeve 903, a cantilever shaft seat 904, a cantilever screw 905, an inner slide rail 906, a connection cover 907, an expansion sleeve frame 908, a cantilever light bar 909 and The outer slide rail 9010 is formed, the cantilever side plate 901 is an elongated plate body, the cantilever top plate 902 is a rectangular plate body, the front end of the cantilever top plate 902 is fixedly connected with a cylindrical butt sleeve 903, the left and right side walls of the cantilever top plate 902 and the cantilever side plate 901 The front ends are fixedly connected, the tops of the left and right cantilever side plates 901 are connected by a number of equally spaced connection covers 907, the cantilever top plate 902, the cantilever side plates 901 and the connection covers 907 form a rectangular column, the length of the rectangular column is greater than its cross section Ten times the size of the butt wire, the rear ends of the two cantilever side plates 901 are fastened on the left and right sides of the I-shaped seat 801 on the top of the main transmission box 8, the rear ends of the cantilever side plates 901 are engaged with the inner walls of the upper and lower plates of the I-shaped seat 801, and the cantilever side plates 901 The cantilever side plate 901 is fixedly connected with the I-shaped seat 801, and there are adjustable inclined irons between the upper and lower ends of the cantilever side plate 901 and the joint surfaces of the upper and lower plates of the I-shaped seat 801; A cantilever light bar 909 fixed by the cantilever axle seat 904 is arranged on the inner side wall of the left cantilever side plate 901 between the two inner slide rails 906, and on the inner side wall of the right cantilever side plate 901 A cantilever lead screw 905 fixed by the cantilever shaft seat 904 is arranged between the two inner slide rails 906, the cantilever light bar 909 is fixedly connected with the driving light bar 805 of the main transmission box 8 through a coupling, and the cantilever lead screw 905 is connected to the drive light bar 805 through a coupling. The driving screw 807 of the main transmission box 8 is fixedly connected; an outer slide rail 9010 is arranged on the outer side wall of the cantilever side plate 901, and an expansion sleeve 908 is arranged in the two cantilever side plates 901. 908 is composed of a support frame body 9081, an expansion sleeve slider 9082 and a connecting rod 9083. The top ends of the front and rear support frame bodies 9081 are connected by a pair of connecting rods 9083. Both sides of the front and rear support frame bodies 9081 are connected to the cantilever through the expansion sleeve slider 9082. The inner slide rail 906 of the side plate 901 is connected;

The milling shaft box 10 is located between the front and rear support frame bodies 9081 of the inner expansion sleeve frame 908 of the cantilever boring frame 9. The key outer gear sleeve 1003, the main shaft sleeve 1004, the adjusting screw 1005, the slider 1006, the gear set 1009, the bevel gear 10010, the main shaft 10011 and the inner thread block 10012 are composed of the left and right sides of the box body through the slider 1006 and the cantilever boring frame The inner slide rail 906 of The box body moves back and forth, and another pair of light bar tile covers 1001 sleeved on the cantilever light bar 909 in the cantilever boring frame 9 is fixed on the left side of the box body. The inner sliding key outer gear sleeve 1003 on the upper side, the inner sliding key outer gear sleeve 1003 can slide on the cantilever light bar 909, and through the gas internal sliding key, it can run synchronously with the cantilever light bar 909 in the process of sliding back and forth. There is a gear set 1009 that meshes with the inner feather key and the outer gear sleeve 1003. The top of the box is provided with a main shaft sleeve 1004 that is inserted into its interior and protrudes from its bottom end. The main shaft sleeve 1004 is provided with a rotatable main shaft 10011. , the main shaft 10011 meshes with the gear set 1009 through the cooperation of the gear and the bevel gear 10010. After the cantilever light bar 909 runs, the main shaft 10011 is driven to rotate through the cooperation of the inner sliding key and the outer gear sleeve 1003 with the gear. The bottom end of the main shaft 10011 samples the BT40 interface. Various general-purpose clamping tools 1008 can be installed. Next to the main shaft 10011 at the top of the box, there is an adjustment screw 1005 inserted into the box. The adjustment screw 1005 is fixedly connected to the box through the screw shaft seat. The inner thread block 10012 is screwed in, and the side wall of the thread block 10012 is fixedly connected with the main shaft sleeve 1004. The square head of the adjusting screw 1005 is located on the top surface of the box, and the top surface of the box outside the square head of the screw There is a scale ring on it, and the adjusting screw 1005 is rotated. The adjusting screw 1005 controls the up and down displacement of the main shaft sleeve 1004 through the inner thread block 10012, and the main shaft 10011 in the main shaft sleeve 1004 moves up and down accordingly;

A spray head 1007 is arranged at the bottom of the milling shaft box 10. The spray head 1007 adopts a retractable automatic hose reel. The spray head 1007 is sprayed on the edge of the cutting edge. The spray cooling system can be connected with the hydraulic system of the machine tool or can be set separately;

The rear end of the worktable 4 is provided with a cantilever auxiliary support 401. The cantilever auxiliary support 401 is composed of an L-shaped frame body 4011, an L-shaped shaft seat 4012 and a roller 4013. A pair of L-shaped frame bodies 4011 are fixedly connected by a connecting plate. The front ends of the horizontal rods of the two L-shaped frame bodies 4011 are fixedly connected with the workbench 4, and the ends of the vertical rods of the two L-shaped frame bodies 4011 are provided with L-shaped shaft seats 4012, and the L-shaped shaft seats 4012 are fixed with rollers 4013 through the rotating shaft. The two rollers 4013 can be moved to below the outer slide rails 9010 on the left and right sides of the cantilever boring frame 9 through the translation of the worktable 4, and the cantilever boring frame 9 is supported by supporting the outer slide rails 9010;

The worktable 4 is provided with three supporting frames 5 in an array of equal intervals. The supporting frames 5 are all composed of a supporting box, a spacing adjustment screw 501, a sliding table 502, a top wheel seat 503, a top wheel 504, and a clamping claw seat 505. , a clamping jaw 506 and a clamping jaw screw 507, the support box is fastened on the table 4 by screws, and a pair of parallel spacing adjustment screws 501 are arranged between the left and right side walls of the support box. The rod bearing seat is fixedly connected with the support box, and the end of the pitch adjusting lead screw 501 protrudes. Through manual adjustment, a pair of sliding tables 502 that can slide on the top surface of the left and right sides of the top of the support box are provided, and the left sliding table 502 is fixedly connected with the screw nut on one spacing adjusting screw 501, the right sliding table 502 is fixedly connected with the screw nut on the other spacing adjusting screw 501, the top of the left and right sliding tables 502 are fixed with a top wheel seat 503, The wheel base 503 is provided with a rotatable top wheel 504, and the top wheel base 503 of the left and right sliding tables 502 is provided with a gripper seat 505. The gripper seat 505 is provided with a gripper lead screw 507, and a gripper lead screw 507 It is fixed on the gripper seat 505 through the screw bearing seat. The bottom end of the gripper screw 507 is a protruding lead screw. The top end of the gripper screw 507 is covered with a nut sleeve, and the end of the nut sleeve is provided with a gripper 506, the distance between the two sliding tables 502 is controlled by rotating the pitch adjusting screw 501, and the extension distance of the gripping jaw 506 is adjusted by adjusting the gripping jaw screw 507, wherein, on the top wheel seat 503 of the support frame 5 at the front end and the rear end Both are provided with a top wheel drive motor 508 connected to the top wheel 504 through a reduction box;

The tailstock 6 is composed of a tailstock seat 601, a bearing cover 602, a support shaft 603, a pressing oil cylinder 604, a hydraulic motor 605, a support shaft drive box 606, a rack 607, a spring 608, a guide bearing 609 and a drive gear 6051 , the tailstock 601 is located on the slide rail of the machine bed 1, and is fixedly connected with the worktable 4. The tailstock 601 is installed with a worktable drive motor 11, and the worktable drive motor 11 is connected to the internal gear of the machine bed 1 through gears. The rack teeth mesh, drive the rear control table 4 and the tailstock 6 to move back and forth, a pair of bearing covers 602 are arranged on the top of the tailstock 601, the rear bearing covers 602 are fixed on the tailstock 601 by screws, and the front bearing covers 602 are on both sides The four pressing oil cylinders 604 are pressed on the tailstock seat 601, the cylinder rod ends of the pressing oil cylinders 604 are fixed on the tailstock seat 601, and the cylinder rods are sleeved with springs 608 supporting the bearing cover 602. A support shaft 603 is inserted inside the bearing cover 602, the support shaft 603 can slide back and forth in the two bearing covers 602, the side wall of the support shaft 603 is provided with a rack 607, and the front end of the tailstock seat 601 is fixed with a support shaft sleeved outside the support shaft 603 The drive box 606, the support shaft drive box 606 is provided with a hydraulic motor 605, the shaft end of the hydraulic motor 605 is inserted into the support shaft drive box 606, and the drive gear 6051 meshes with the rack 607 of the support shaft 603 to drive the hydraulic motor 605, The support shaft 603 extends or retracts at the top rear end of the tailstock seat 601. A rectangular groove is opened at the top rear end of the tailstock seat 601. The rectangular groove is provided with a guide bearing 609 fixed by the bearing seat. When the frame 9 moves, the butting sleeve 903 at the end of the cantilever boring frame 9 is inserted into the bearing shell cover 602 through the guide of the guide bearing 609 .

The workpiece is hoisted to the support frame 5 of the worktable 4, and by manually adjusting the spacing on the support frame 5, the lead screw 501 is adjusted to control the position of the top pulley 504 to support the deep hole workpiece 7, and the two top pulleys 504 are adjusted to move to one side. By changing the left and right positions of the deep hole workpiece 7, and adjusting the two top wheels 504 to move inward or outward at the same time, the height position of the deep hole workpiece 7 can be changed, and the center position of the deep hole can be determined by a measuring ruler, and the cylindrical workpiece can start the top wheel drive motor 508, make the workpiece run, and drive the center position of the deep hole of the workpiece by percentage, which can quickly realize the concentric alignment of the shaft hole of the long cylinder. to fix the workpiece;

When the workpiece size is greater than the length of the cantilever boring frame 9:

When the worktable 4 is moved to the cantilever boring frame 9, the two rollers 4013 of the cantilever auxiliary support 401 can be moved to the bottom of the outer slide rails 9010 on the left and right sides of the cantilever boring frame 9 through the translation of the worktable 4, and the outer slide rails 9010 are supported by the support The cantilever boring frame 9 is supported, and the front end of the cantilever boring frame 9 is sleeved on the support shaft 603, so that the end of the cantilever boring frame 9 is supported and fixed, and the milling shaft box 10 is located at the rear end of the workpiece. The lever 1005 controls the position of the tool, starts the frequency conversion motor 803 of the main transmission box 8, and makes it drive the light bar 805. After the light bar 805 is driven to run, the outer gear sleeve 1003 and the gear set 1009 are passed through the inner sliding key of the milling shaft box 10. It cooperates with the bevel gear 10010 to drive the main shaft 10011 to operate to realize the operation of the tool;

The servo motor 804 of the main transmission box 8 is started to drive the driving screw 807. After the driving screw 807 runs, the milling spindle box 10 is driven by the screw nut sleeve 1002 of the milling spindle box 10 on the inner slide rail 906 of the cantilever boring frame 9. When the milling shaft box 10 is displaced back and forth, its front and rear faces are pressed against the support frame body 9081 of the expansion frame 908, which drives it to move back and forth accordingly. The expansion frame 908 can effectively prevent the cantilever boring frame 9 The cantilever side plates 901 on both sides are internally bent and deformed to ensure the smoothness of the inner slide rails 906 at the front and rear of the milling spindle box 10, reduce the vibration amount during the operation of the milling spindle box 10, improve the tool stability, and improve the machining accuracy. The head 1007 sprays lubricating fluid onto the edge of the cutting edge for cooling.

When the workpiece size is smaller than the cantilever boring frame 9:

The docking sleeve 903 of the cantilever boring frame 9 is sleeved on the support shaft 603, and the worktable 4 continues to translate in the direction of the cantilever boring frame 9. Under the action of the hydraulic motor 605, the support shaft 603 is removed from the tailstock with the insertion of the cantilever boring frame 9. 6. The front end slowly extends, when the butting sleeve 903 of the cantilever boring frame 9 is inserted into the bearing cover 602 at the rear end of the tailstock 6, the butting sleeve 903 at the end of the cantilever boring frame 9 is inserted into the bearing cover 602 through the guide of the guide bearing 609, and starts at the same time. Press the oil cylinder 604 to press the bearing cover 602, thereby fixing the front end of the cantilever boring frame 9 to the butt sleeve 903 to improve the rigidity and stability of the entire cantilever boring frame 9, and then perform deep hole milling as above.

The electric control devices of each electrical component of the device are connected with the machine tool electronic control system, and the PLC is controlled through the machine tool control panel to realize the switch. PLC realizes the switch of its various hydraulic valves.

Claims (7)

1. A CNC deep hole keyway milling machine, comprising a machine bed (1), a machine tool electrical cabinet (2), a machine tool control panel (3), a worktable (4), a support frame (5), a tailstock (6), The main transmission box (8), the cantilever boring frame (9), the milling shaft box (10), the worktable drive motor (11), the machine bed (1) is a horizontal bed, and the two A worktable (4) is installed on the parallel guide rails, a follow-up tailstock (6) is fixedly installed at the front end of the worktable (4), and the worktable (4) supports the deep hole workpiece (7) through the support frame (5). The rear of the body (1) is provided with a main transmission box (8), the main transmission box (8) is provided with a cantilever boring frame (9) extending forward, and machine tool electrical cabinets ( 2) and the machine tool control panel (3), the machine tool electric cabinet (2) is connected to various electrical components of the machine tool, the machine tool control panel (3) is connected to the PLC in the electric cabinet (2), and the machine tool control panel (3) is connected through the numerical control system. It is composed of a liquid crystal touch screen and a work light. The machine tool adopts the well-known SIEMENS 828D numerical control system and SIEMENS electronic control system. There is a hydraulic station outside the front end of the machine bed (1). The hydraulic station is fully enclosed and hydraulic The station consists of two sets of pump sets, one set is used for lubricating the guide rails of the bed, and the other set is used to supply oil to each hydraulic cylinder of the machine tool; it is characterized in that the length of the cantilever boring frame (9) is greater than 10% of its radial dimension. times, inside the cantilever boring frame (9) is provided with a milling shaft box (10) that drives forward and backward displacement through the main transmission box (8), and the power source of the milling spindle of the milling shaft box (10) also comes from the cantilever boring frame (9) The main transmission box (8) outside; the worktable (4) is moved to the front end of the machine bed (1), the workpiece is hoisted and placed on the support frame (5) on the worktable (4), and supported by the support frame (5) Clamp, move the worktable (4) backwards so that the deep hole of the workpiece is sleeved outside the cantilever boring frame (9), connect the front end of the cantilever boring frame (9) with the tailstock (6) at the front end of the worktable (4), and raise the cantilever The stability of the boring frame (9), the milling shaft box (10) is located at the outer end of the deep hole workpiece (7), the size of the lower tool is adjusted manually, and the operation of the tool is controlled by the main transmission box (8), which is controlled by the main transmission box (8). The milling shaft box (10) moves from the rear end of the deep hole workpiece (7) to the front end to realize deep hole milling. 2. A CNC deep hole keyway milling machine according to claim 1, characterized in that: the main transmission box (8) is provided with a work-type seat (801), a reduction box (802), a frequency conversion motor (803) ), servo motor (804), drive light bar (805), drive box shaft seat (806) and drive screw (807), the top of the main transmission box (8) is fixedly connected with a "I"-shaped I-shaped seat. (801), the left and right sides of the middle vertical plate of the I-shaped seat (801) are respectively fixed with a driving light rod (805) and a driving screw (807) through the driving box shaft seat (806), and the right driving screw (807) The rear end is connected with the power end of the servo motor (804) fixed on the main transmission box (8) through the coupling, and the rear end of the left driving light bar (805) is connected with the main transmission box (8) through the coupling ) is connected to the output shaft of the reduction box (802), the input shaft of the reduction box (802) is connected to a frequency conversion motor (803) through a coupling, and the frequency conversion motor (803) is fixed on the ground through a support plate; the frequency conversion motor ( 803) and then through the reduction box (802) to make the driving light screw (805) run, and the servo motor (804) makes the driving screw (807) run through the coupling. 3. A CNC deep hole keyway milling machine according to claim 1, characterized in that: the cantilever boring frame (9) is composed of a cantilever side plate (901), a cantilever top plate (902), a butt sleeve (903), Cantilever shaft seat (904), cantilever lead screw (905), inner slide rail (906), connection cover (907), expansion frame (908), cantilever light bar (909) and outer slide rail (9010), the cantilever The side plate (901) is an elongated plate body, the cantilever top plate (902) is a rectangular plate body, the front end of the cantilever top plate (902) is fixedly connected with a cylindrical butt sleeve (903), the left and right side walls of the cantilever top plate (902) are connected to the cantilever The front ends of the side panels (901) are fixedly connected, and the tops of the left and right cantilever side panels (901) are connected by a plurality of equally spaced connection covers (907), the cantilever top panel (902), the cantilever side panels (901) and the connection covers (907) A rectangular cylinder is formed, and the length of the rectangular cylinder is ten times greater than the size of its cross-section butt wire. The rear ends of the two cantilever side plates (901) are buckled on the left and right sides of the I-shaped seat (801) on the top of the main transmission box (8). The rear end of the cantilever side plate (901) is engaged with the inner wall of the upper and lower plates of the I-shaped seat (801). Adjustable inclined irons are arranged between the joint surfaces of the upper and lower plates of the mold seat (801); two upper and lower parallel inner slide rails (906) are arranged on the inner wall of the cantilever side plate (901). A cantilever light bar (909) fixed by a cantilever axle seat (904) is arranged between the two inner slide rails (906) on the inner side wall of the plate (901), and two inner slides are arranged on the inner side wall of the right cantilever side plate (901). A cantilever lead screw (905) fixed by the cantilever shaft seat (904) is arranged between the rails (906), and the cantilever light bar (909) is fixedly connected with the driving light bar (805) of the main transmission box (8) through a coupling, The cantilevered lead screw (905) is fixedly connected with the drive lead screw (807) of the main transmission case (8) through a coupling; an outer slide rail (9010) is provided on the outer side wall of the cantilevered side plate (901). The two cantilever side plates (901) are provided with an expansion frame (908), and the expansion frame (908) is composed of a support frame body (9081), an expansion slider (9082) and a connecting rod (9083). The top ends of the two support frame bodies (9081) are connected by a pair of connecting rods (9083), and both sides of the front and rear support frame bodies (9081) are connected to the inner slide rail (906) of the cantilever side plate (901) through the expansion sleeve slider (9082) )connect. 4. A CNC deep hole keyway milling machine according to claim 1, characterized in that: the milling shaft box (10) is located on the front and rear support frame bodies of the cantilever boring frame (9) inner expansion sleeve frame (908) (9081), the milling shaft box (10) consists of a box body, a smooth bar tile cover (1001), a nut sleeve (1002), an inner feather key outer gear sleeve (1003), a spindle sleeve (1004), The adjusting screw (1005), the slider (1006), the gear set (1009), the bevel gear (10010), the main shaft (10011) and the internal thread block (10012) are composed of the left and right sides of the box through the slider (1006) and the The inner slide rail (906) of the cantilever boring frame (9) is connected, and the right side of the box is fixed with a pair of screw nut sleeves (1002) sleeved on the cantilever screw (905) in the cantilever boring frame (9), the cantilever screw (905) ) during operation through the screw nut sleeve (1002) to drive the box body limited to the inner slide rail (906) to move back and forth, and the left side of the box body is fixed with another pair of light beams (909) that are sleeved on the cantilever light bar (909) in the cantilever boring frame (9). The bar tile cover (1001), the front end smooth bar tile cover (1001) of the box body is provided with an inner sliding key outer gear sleeve (1003) on the cantilever smooth bar (909), an inner sliding key outer gear sleeve (1003) It can slide on the cantilever light bar (909), and can run synchronously with the cantilever light bar (909) in the process of sliding back and forth through the gas internal sliding key. The gear set (1009) is engaged, the top of the box is provided with a main shaft sleeve (1004) which is inserted into its interior and protrudes from its bottom end, and a rotatable main shaft (10011) is arranged in the main shaft sleeve (1004), and the main shaft ( 10011) meshes with the gear set (1009) through the cooperation of the gear and the bevel gear (10010), and the cantilever light bar (909) drives the main shaft (10011) to rotate through the cooperation of the inner feather key outer gear sleeve (1003) and the gear after the operation, The bottom end of the main shaft (10011) samples the BT (40) interface, which can be installed with various general-purpose machine tools (1008). There is an adjusting screw (1005) inserted into the inside of the case next to the main shaft (10011) at the top of the case. The lead screw (1005) is fixedly connected to the box body through the lead screw shaft seat, the inner thread block (10012) is screwed into the thread of the adjusting lead screw (1005), and the side wall of the thread block (10012) is fixed with the spindle sleeve (1004). connection, the square head of the adjusting screw (1005) is located on the top surface of the box, and a scale ring is provided on the top surface of the box outside the square head of the screw. 1005) Control the vertical displacement of the main shaft sleeve (1004) through the female thread block (10012), and the main shaft (10011) in the main shaft sleeve (1004) moves up and down accordingly. 5 . The CNC deep hole keyway milling machine according to claim 1 , wherein the rear end of the worktable ( 4 ) is provided with a cantilever auxiliary support ( 401 ), and the cantilever auxiliary support ( 401 ) is formed by an L-shaped frame. 6 . Body (4011), L-shaped axle seat (4012) and roller (4013), a pair of L-shaped frame bodies (4011) are fixedly connected by connecting plates, and the front end of the horizontal rod of the two L-shaped frame bodies (4011) is connected to the workbench (4) Fixed connection. The ends of the vertical rods of the two L-shaped frame bodies (4011) are provided with L-shaped shaft seats (4012), and the L-shaped shaft seats (4012) are fixed with rollers (4013) through the rotating shaft. 4013) can be moved to below the outer slide rails (9010) on the left and right sides of the cantilever boring frame (9) through the translation of the worktable (4), and the cantilever boring frame (9) is assisted by supporting the outer slide rails (9010). 6. A CNC deep hole keyway milling machine according to claim 1, characterized in that: the worktable (4) is provided with three supporting frames (5) in an equally spaced array, and the supporting frames (5) are all formed by Support box, spacing adjusting screw (501), sliding table (502), top wheel seat (503), top wheel (504), gripper seat (505), gripper (506) and gripper screw (507) ), the support box is fastened on the table (4) by screws, and a pair of parallel spacing adjustment screws (501) are arranged between the left and right side walls of the support box, and the spacing adjustment screws (501) pass through the screw bearing seat It is fixedly connected with the support box, and the end of the pitch adjusting screw (501) protrudes. Through manual adjustment, a pair of sliding tables (502) that can slide on the top surface are provided on the left and right sides of the top of the support box, and the left side slides. The stage (502) is fixedly connected with the screw nut on one spacing adjustment screw (501), the right sliding table (502) is fixedly connected with the screw nut on the other spacing adjustment screw (501), and the left and right sliding stages (502) ) are fixed with a top wheel seat (503) at the top, a rotatable top wheel (504) is arranged in the top wheel seat (503), and clamping jaws are provided next to the top wheel seat (503) of the left and right sliding tables (502). The seat (505), the gripper seat (505) is provided with a gripper screw (507), the gripper screw (507) is fixed on the gripper seat (505) through the screw bearing seat, and the gripper screw (507) ) at the bottom end is the protruding square head of the lead screw, the top end of the gripper screw (507) is covered with a nut sleeve, and the end of the nut sleeve is provided with a gripper (506). The distance between the sliding tables (502) is adjusted by adjusting the clamping jaw screw (507) to adjust the extension distance of the clamping jaw (506). There is a top wheel drive motor (508) connected with the top wheel (504) through a reduction box. 7. A CNC deep hole keyway milling machine according to claim 1, characterized in that: the tailstock (6) consists of a tailstock seat (601), a bearing cover (602), a support shaft (603), a pressure Tightening oil cylinder (604), hydraulic motor (605), support shaft drive box (606), rack (607), spring (608), guide bearing (609) and drive gear (6051), tailstock seat (601) It is located on the slide rail of the machine bed (1) and is fixedly connected with the worktable (4). The tailstock (601) is provided with a worktable drive motor (11), which is connected to the machine tool through gears. The inner rack of the bed (1) is meshed with teeth to drive the rear control table (4) and the tailstock (6) to move forward and backward. A pair of bearing covers (602) are provided on the top of the tailstock seat (601), and the rear bearing covers (602) It is fixed on the tailstock seat (601) by screws, and the left and right sides of the front bearing cover (602) are pressed on the tailstock seat (601) by four pressing oil cylinders (604), and the cylinder rod of the pressing oil cylinder (604) is pressed. The end is fixed on the tailstock seat (601), the cylinder rod is sleeved with a spring (608) supporting the bearing cover (602), and a support shaft (603) is inserted into the two bearing covers (602), and the support shaft ( 603) can slide back and forth in the two bearing covers (602), the side wall of the support shaft (603) is provided with a rack (607), and the front end of the tailstock seat (601) is fixed with a support shaft that is sleeved outside the support shaft (603) to drive Box (606), a hydraulic motor (605) is provided on the support shaft drive box (606), the shaft end of the hydraulic motor (605) is inserted into the support shaft drive box (606), and is connected to the support shaft (603) through the drive gear (6051) ) of the rack (607) meshes to drive the hydraulic motor (605), the support shaft (603) extends or retracts at the top rear end of the tailstock seat (601), and a rectangular shape is opened at the top rear end of the tailstock seat (601). The rectangular groove is provided with a guide bearing (609) fixed by the bearing seat. When the tailstock (6) moves to the cantilever boring frame (9), the butting sleeve (903) at the end of the cantilever boring frame (9) passes through the guide The guide for the bearing (609) is inserted into the bearing cover (602).

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