Deep hole sleeve machining device for lathe

Abstract

The utility model relates to the technical field of lathe machining, in particular to a deep hole sleeve machining device used for a lathe, a cutter bar is connected in a lathe spindle taper hole of a numerical control lathe through a cutter bar supporting shaft, the cutter bar does not rotate when an inner hole of a deep hole sleeve is machined, and the deep hole sleeve rotates along with a lathe chuck. The broaching tool holder moves back and forth along with a lathe tool rest of the numerical control lathe, the broaching tool holder moves to drive the turning tool mounting ring to move back and forth through the broaching tool rod, so that the turning tool moves in an inner hole of the deep hole sleeve, the two ends of the tool rod are stably supported, the mechanism strength of the tool rod is guaranteed, and the machining precision is improved. The deep hole sleeve does not need to be turned over during use, the roughness and concentricity of inner hole machining of the deep hole sleeve are guaranteed, the production efficiency is improved, the machining cost is reduced, special inner hole machining devices do not need to be purchased additionally, and the deep hole sleeve inner hole machining device can be applied to an existing numerical control machine tool.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe processing, in particular to a deep hole sleeve processing device used for a lathe. Background Art

[0002] The deep hole sleeve is a component used in cold rolling coilers. The workpiece is relatively long, generally about 2 meters. The inner hole is required to be concentric with the outer circle, and there should be no chatter marks or knife marks on the inner hole surface. When finishing on a lathe, a long inner hole tool bar is clamped to the tool holder for processing. The tool holder cannot bear the weight of the tool bar, and the inner hole cannot be finished. If half of the inner hole is finished first and then the other half is turned around and finished, two lathes are required, and the inner hole tool bar is limited by the length of the inner hole. The tool bar is long, has poor rigidity, and low strength, resulting in a small amount of cutting. Multiple passes are required to complete the processing during the processing, resulting in low processing efficiency. In addition, knife marks will appear during the finishing process, the inner hole sizes at both ends are not consistent, and the center axis at both ends deviates, resulting in scrapped workpieces. If you consider using a special machine for inner hole processing, the processing accuracy is good, but the disadvantage is that it can only process inner holes and cannot be used for other processing, and the equipment price is high. Utility Model Content

[0003] The utility model aims to provide a deep hole sleeve processing device used in a lathe, which solves the problem of insufficient strength of the tool rod, ensures the roughness and concentricity of the inner hole of the sleeve, improves production efficiency and reduces processing costs.

[0004] The utility model discloses a deep hole sleeve processing device used in a lathe, comprising a tool rod support shaft, a tool rod, a broach seat, a broach rod and a turning tool mounting ring, the tool rod support shaft comprises a tapered column, a stop platform and a support column, the stop platform is arranged between the tapered column and the support column, the tapered column, the stop platform and the support column are coaxial, the outer diameter of the stop platform is larger than the outer diameter of the support column, the tapered column is inserted into the tapered hole of the lathe spindle, the tool rod is inserted into the support column, the end of the tool rod is top-connected to the stop platform, the turning tool mounting ring is slidably sleeved on the outer wall of the tool rod, the turning tool mounting seat is connected to the outer wall of the turning tool mounting ring on the side close to the lathe chuck, two turning tool mounting seats are provided, the two turning tool mounting seats are symmetrical with the turning tool mounting ring axis as the center, the two turning tool mounting seats are fixedly connected with a turning tool, and the turning tool A support ear I is provided on the outer wall of the mounting ring away from the lathe chuck. There are two support ears I, and the two support ears I are symmetrical with the axis of the turning tool mounting ring as the center. The broaching seat is fixedly connected to the lathe tool holder. A tool rod groove is provided on the top of the broaching seat. The tool rod groove is slidably connected to the outer wall of the tool rod. Two holes are provided on the top of the broaching seat. There are two broaching rods, and the two broaching rods are fixedly connected in the two holes respectively. The ends of the two broaching rods away from the two holes are respectively fixedly connected to the two support ears I. The deep hole sleeve is clamped on the lathe chuck, the tool rod, turning tool mounting ring, broaching rod and turning tool are all provided on the inner side of the deep hole sleeve, the turning tool is turned on the inner wall of the deep hole sleeve, the rear end of the tool rod extends out of the deep hole sleeve, and the broaching seat is connected to the tool rod extending out of the deep hole sleeve.

[0005] Furthermore, the broach seat includes a base plate, a vertical plate and a rib plate. The vertical plate is fixedly connected to the top surface of the base plate. The tool rod groove and two holes are both provided on the vertical plate. The top surface of the tool rod groove is open and the bottom surface is an arc. The two holes are respectively provided on both sides of the tool rod groove. The rib plate is fixedly connected between the base plate and the vertical plate. There are two base plates. The base plate is connected to the lathe tool holder by bolts. The base plate is provided with a through hole for the bolts to pass through, and the lathe tool holder is provided with a screw hole for the bolt connection.

[0006] Furthermore, the two support ears I are fixedly connected with studs, which are arranged on the side of the support ear I away from the turning tool mounting seat. The two studs are coaxial with the two holes respectively. The inner wall of one end of the broaching rod is internally threaded, and the outer wall of the other end of the broaching rod is provided with an external thread. The outer wall of the broaching rod is fixedly connected with a stop platform II, which is arranged close to the external thread. The internal thread is connected to the stud, and the external thread is inserted into the hole. After the external thread passes through the hole, it is connected with a nut, and the vertical plate is clamped between the stop platform II and the nut.

[0007] Furthermore, a keyway is provided on the outer wall of the bottom of the tool rod, and a guide key is fixedly connected in the keyway. The inner wall of the bottom of the turning tool mounting ring is provided with a slide groove I, and the slide groove I is slidably connected to the sub-guide key.

[0008] Furthermore, there are multiple guide keys linearly distributed in the keyway, each guide key is connected to the keyway by a countersunk screw, and the guide key is provided with a countersunk hole for the countersunk screw to pass through; the bottom surface of the keyway is provided with a screw hole for the countersunk screw to connect.

[0009] Furthermore, it also includes a tool rod fixing assembly, which is arranged between the deep hole sleeve and the broach seat, and the tool rod fixing assembly includes a fixing seat and a pressure plate, and the fixing seat includes a base and a column, the column is fixedly connected to the top surface of the base, and the base is slidably connected to the lathe guide rail, and a screw hole is provided on the base, and a bolt is connected in the screw hole, and the front end of the bolt is connected to the lathe guide rail, and the pressure plate is fixedly connected to the top surface of the column, and the pressure plate and the column are connected by bolts, and a through hole for the bolt to pass through is provided on the pressure plate, and a screw hole for the bolt to be connected is provided on the column, and a tool rod hole and a sliding hole are provided between the pressure plate and the fixing seat, and there are two sliding holes, and the two sliding holes are respectively provided on the left and right sides of the tool rod hole, the tool rod is fixedly connected in the tool rod hole, and the two broaching rods are slidably connected in the two sliding holes.

[0010] Furthermore, the top surface of the column is provided with a semicircular groove I and a semicircular groove II, and there are two semicircular grooves II, which are respectively arranged on both sides of the semicircular groove I. The pressure plate includes an arc plate and a support ear II, and there are two support ears II, which are fixedly connected to the left and right sides of the arc plate. The bottom surface of the arc plate is provided with a semicircular groove III and a semicircular groove IV, and there are two semicircular grooves IV, which are respectively arranged on both sides of the semicircular groove III. The semicircular groove III is arranged at the top of the semicircular groove I, and the semicircular groove III and the semicircular groove I form a shank hole. The two semicircular grooves II are respectively arranged at the top of the two semicircular grooves IV, and the semicircular groove II and the semicircular groove IV form a sliding hole.

[0011] Furthermore, the arc plate is provided with a pin hole IV, the knife rod is provided with a pin hole I, the pin hole I passes through the knife rod, the pin hole I and the pin hole IV are coaxial, and a positioning pin is inserted into both the pin hole I and the pin hole IV.

[0012] Furthermore, a pulling sleeve is fixedly connected to the tailstock of the CNC lathe, and the rear end of the tool rod passes through the tool rod groove and is inserted into the pulling sleeve. The pulling sleeve is provided with a pin hole III, and the pin hole III passes through the pulling sleeve. The rear end of the tool rod is provided with a pin hole II, and the pin hole II passes through the tool rod. The pin hole III and the pin hole II are coaxial, and connecting pins are inserted into the pin holes III and the pin holes II.

[0013] Furthermore, the tool rod is provided with a measuring hole, which is a waist-shaped hole and passes through the tool rod. There are multiple measuring holes, and the multiple measuring holes are linearly evenly distributed along the length direction of the tool rod.

[0014] The beneficial effects of the utility model are:

[0015] The utility model forms a stable support on both ends of the tool rod, ensures the structural strength of the tool rod, thereby ensuring the processing stability of the deep hole sleeve. There is no need to turn the deep hole sleeve over when in use, which ensures the processing stability of the deep hole sleeve and the roughness and concentricity of the inner hole processing of the deep hole sleeve, improves production efficiency, reduces processing costs, and does not need to purchase special inner hole processing equipment separately. It can be applied to existing CNC machine tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the utility model;

[0018] Figure 3 For this utility model Figure 2 AA section view;

[0019] Figure 4 This is a schematic structural diagram of the tool bar support shaft of the utility model;

[0020] Figure 5 Schematic diagram of the structure of the tool bar;

[0021] Figure 6 For this utility model Figure 5 BB cross-sectional view;

[0022] Figure 7 For this utility model Figure 5 CC cross-sectional view;

[0023] Figure 8 For this utility model Figure 5 DD cross-sectional view;

[0024] Figure 9 This is a schematic structural diagram of the broaching rod of the utility model;

[0025] Figure 10 This is a structural diagram of the turning tool mounting ring of the utility model

[0026] Figure 11 For this utility model Figure 10 E-direction view;

[0027] Figure 12 For this utility model Figure 10 F-direction view;

[0028] Figure 13 This is a structural diagram of the tool bar fixing assembly of the utility model;

[0029] Figure 14 This is a schematic structural diagram of the fixing seat of the utility model;

[0030] Figure 15 This is a schematic structural diagram of the pressing plate of the utility model;

[0031] Figure 16 This is a structural diagram of the broach seat of the utility model;

[0032] Figure 17 For this utility model Figure 16 GG cross-sectional view;

[0033] Figure 18 For this utility model Figure 16 HH cross-sectional view.

[0034] In the figure: 1. Lathe; 2. Deep hole sleeve; 3. Tool bar support shaft; 301. Tapered column; 302. Stop table I; 303. Support column; 4. Tool bar; 401. Pin hole I; 402. Pin hole II; 404. Measuring hole; 405. Keyway; 5. Guide key; 6. Pulling sleeve; 601. Pin hole III; 7. Connecting pin; 8. Broaching tool holder; 801. Base plate; 802. Vertical plate; 803. Rib plate; 804. Tool bar groove; 805. Hole; 9. Broaching tool bar; 901. Internal thread; 902. External thread; 903. Stop table II; 10. Lathe tool Mounting ring; 1001. Support lug I; 1002. Stud; 1003. Turning tool mounting base; 1004. Slide groove I; 11. Tool bar mounting assembly; 12. Mounting base; 1201. Base; 1202. Column; 1203. Semi-circular groove I; 1204. Semi-circular groove II; 13. Pressure plate; 1301. Arc plate; 1302. Support lug II; 1303. Pin hole IV; 1304. Semi-circular groove III; 1305. Semi-circular groove IV; 14. Locating pin; 15. Center rest; 16. Turning tool; 17. Tool bar hole; 18. Slide hole DETAILED DESCRIPTION

[0035] like Figures 1-18As shown, the utility model is a deep hole sleeve processing device used in a lathe, comprising a tool rod support shaft 3, a tool rod 4, a broach seat 8, a broach rod 9 and a turning tool mounting ring 10, the tool rod support shaft 3 comprises a tapered column 301, a stop table 302 and a support column 303, the stop table 302 is arranged between the tapered column 301 and the support column 303, the tapered column 301, the stop table 302 and the support column 303 are coaxial, the outer diameter of the stop table 302 is larger than the outer diameter of the support column 303, the tapered column 301 is inserted into the taper hole of the lathe spindle, the tool rod 4 is inserted into the support column 303, the end of the tool rod 4 is top-connected to the stop table 302, the turning tool mounting ring 10 is slidably sleeved on the outer wall of the tool rod 4, and the turning tool mounting seat 1003 is connected to the outer wall of the turning tool mounting ring 10 close to the lathe chuck. There are two, two turning tool mounting seats 1003 are symmetrical with the axis of the turning tool mounting ring 10 as the center, and the two turning tool mounting seats 1003 are fixedly connected with a turning tool 16. The turning tool mounting ring 10 is provided with a support ear Ⅰ 1001 on the outer wall of the side away from the lathe chuck. There are two support ears Ⅰ 1001, and the two support ears Ⅰ 1001 are symmetrical with the axis of the turning tool mounting ring 10 as the center. The broaching seat 8 is fixedly connected to the lathe tool holder, and the top of the broaching seat 8 is provided with a tool rod groove 804, and the tool rod groove 804 is slidably connected to the outer wall of the tool rod 4. There are two holes 805 on the top of the broaching seat 8, and there are two broaching rods 9. The two broaching rods 9 are respectively fixedly connected in the two holes 805, and the ends of the two broaching rods 9 away from the two holes 805 are respectively fixedly connected to the two support ears Ⅰ 1001, deep The hole sleeve 2 is clamped on the lathe chuck, the tool rod 4, the turning tool mounting ring 10, the broaching tool rod 9 and the turning tool 16 are all arranged on the inner side of the deep hole sleeve 2, the turning tool 16 is turned on the inner wall of the deep hole sleeve 2, the rear end of the tool rod 4 extends out of the deep hole sleeve 2, and the broaching tool seat 8 is connected to the tool rod 4 extending out of the deep hole sleeve 2; the broaching tool seat 8 includes a bottom plate 801, a vertical plate 802 and a rib plate 803, the vertical plate 802 is fixedly connected to the top surface of the bottom plate 801, the tool rod groove 804 and the two holes 805 are all provided on the vertical plate 802, the tool rod groove 804 has an open top surface and a circular arc bottom surface, and the two holes 805 are respectively provided on both sides of the tool rod groove 804, the rib plate 803 is fixedly connected between the bottom plate 801 and the vertical plate 802, the bottom plate 801 is provided with two, the bottom plate 801 is connected to the lathe tool holder by bolts, and the bottom The plate 801 is provided with a through hole for the bolt to pass through, and the lathe tool holder is provided with a screw hole for the bolt connection; the two support ears Ⅰ 1001 are fixedly connected with a stud 1002, and the stud 1002 is provided on the side of the support ear Ⅰ 1001 away from the lathe tool mounting seat 1003, and the two studs 1002 are coaxial with the two holes 805 respectively. The inner wall of one end of the broaching rod 9 is provided with an internal thread 901, and the outer wall of the other end of the broaching rod 9 is provided with an external thread 902. A stop table II 903 is fixedly connected to the outer wall of the broaching rod 9, and the stop table II 903 is provided near the external thread 902. The internal thread 901 is connected to the stud 1002, and the external thread 902 is inserted into the hole 805. After the external thread 902 passes through the hole 805, it is connected with a nut, and the vertical plate 802 is clamped between the stop table II 903 and the nut;A keyway 405 is provided on the outer bottom wall of the tool arbor 4, into which a guide key 5 is fixedly connected. A slide groove 1004 is provided on the inner bottom wall of the tool mounting ring 10, which is slidably connected to the guide key 5. Multiple guide keys 5 are evenly distributed linearly within the keyway 405, each connected to the keyway 405 by a countersunk screw. The guide key 5 has a countersunk hole for the countersunk screw to pass through. The bottom surface of the keyway 405 has a screw hole for the countersunk screw to connect. The tool arbor 4 is provided with a waist-shaped measuring hole 403, which extends through the tool arbor 4. There are multiple measuring holes 403, which are evenly distributed linearly along the length of the tool arbor 4.

[0036] The tool rod 4 of the utility model is connected to the spindle taper hole of the CNC lathe 1 through the tool rod support shaft 3. When the inner hole of the deep hole sleeve 2 is processed, the tool rod 4 does not rotate, and the deep hole sleeve 2 rotates together with the lathe chuck. When the inner hole of the deep hole sleeve 2 is processed, the broaching seat 8 moves back and forth together with the lathe tool holder of the CNC lathe 1. The movement of the broaching seat 8 drives the turning tool mounting ring 10 to move back and forth through the broaching rod 9, thereby realizing the movement of the turning tool 16 in the inner hole of the deep hole sleeve 2. The tool rod 4 provides support for the back and forth movement of the broaching seat 8 and the turning tool mounting ring 10. The turning tool mounting ring 10 drives the turning tool 21 to realize the overall processing from beginning to end inside the deep hole sleeve 2. There is no need to flip the deep hole sleeve 2 for separate processing from both ends, thereby ensuring the processing accuracy of the inner hole of the deep hole sleeve 2.

[0037] The arrangement of the guide key 5 and the slide groove Ⅰ 1004 ensures the movement stability of the turning tool mounting ring 10 .

[0038] The arrangement of the measuring hole 403 is used to measure the tool rod 4, thereby ensuring that the tool rod 4 is coaxial with the spindle axis of the CNC lathe 1. A dial indicator is generally used to align the tool rod 4 during use.

[0039] However, since the length of the deep hole sleeve 2 is generally about 2 meters, and the length of the tool rod 4 exceeds the length of the deep hole sleeve 2, the tool rod 4 also has a longer length. The strength of the end of the tool rod 4 extending out of the deep hole sleeve 2 is relatively low, which can easily affect the processing accuracy. The broaching seat 8 can form a certain support for the end extending out of the deep hole sleeve 2, but since the broaching seat 8 moves back and forth, the support of the tool rod 4 by the broaching seat 8 is not stable.

[0040] In order to solve the problem of supporting the tool bar 4, the utility model also includes a tool bar fixing assembly 11, the tool bar fixing assembly 11, the tool bar fixing assembly 11 is arranged between the deep hole sleeve 2 and the broach seat 8, the tool bar fixing assembly 11 includes a fixing seat 12 and a pressure plate 13, the fixing seat 12 includes a base 1201 and a column 1202, the column 1202 is fixedly connected to the top surface of the base 1201, the base 1201 is slidably connected to the lathe guide rail, the base 1201 is provided with a screw hole, a bolt is connected in the screw hole, the front end of the bolt is connected to the lathe guide rail, and the pressure plate 13 is fixedly connected On the top surface of the column 1202, the pressure plate 13 is connected to the column 1202 by bolts. A through hole for the bolt to pass through is provided on the pressure plate 13, and a screw hole for the bolt connection is provided on the column 1202. A knife bar hole 17 and a sliding hole 18 are provided between the pressure plate 13 and the fixed seat 12. There are two sliding holes 18, which are respectively provided on the left and right sides of the knife bar hole 17. The knife bar 4 is fixedly connected to the knife bar hole 17, and the two broaching rods 9 are respectively slidably connected to the two sliding holes 18; a semicircular arc groove I 1203 and a semicircular arc groove II 1203 are provided on the top surface of the column 1202. 04, there are two semi-circular grooves II 1204, and the two semi-circular grooves II 1204 are respectively arranged on both sides of the semi-circular groove I 1203. The pressure plate 13 includes an arc plate 1301 and a support ear II 1302. There are two support ears II 1302, and the two support ears II 1302 are fixedly connected to the left and right sides of the arc plate 1301. A semi-circular groove III 1304 and a semi-circular groove IV 1305 are provided on the bottom surface of the arc plate 1301. There are two semi-circular grooves IV 1305, and the two semi-circular grooves IV 1305 are respectively arranged on both sides of the semi-circular groove III 1304. 04 is arranged at the top of the semicircular arc groove Ⅰ1203, the semicircular arc groove Ⅲ1304 and the semicircular arc groove Ⅰ1203 form a shank hole 17, the two semicircular arc grooves Ⅱ1204 are respectively arranged at the top of the two semicircular arc grooves Ⅳ1305, the semicircular arc groove Ⅱ1204 and the semicircular arc groove Ⅳ1305 form a sliding hole 18; a pin hole Ⅳ1303 is provided on the arc plate 1301, and a pin hole Ⅰ401 is provided on the shank 4, the pin hole Ⅰ401 passes through the shank 4, the pin hole Ⅰ401 is coaxial with the pin hole Ⅳ1303, and a positioning pin 14 is inserted into the pin hole Ⅰ401 and the pin hole Ⅳ1303.

[0041] The arrangement of the tool bar fixing assembly 11 provides a stable support for the tool bar 4 without affecting the movement of the broaching seat 8 and the tool bar 9.

[0042] The fixing seat 12 moves on the lathe guide rail to change the support position, thereby adapting to deep hole sleeves 2 and tool rods 4 of different lengths. After the position of the fixing seat 12 is determined, it is fixedly connected to the lathe guide rail by bolts.

[0043] A pulling sleeve 6 is fixedly connected to the tailstock of the CNC lathe 1. The rear end of the tool rod 4 passes through the tool rod groove 804 and is inserted into the pulling sleeve 6. A pin hole III 601 is provided on the pulling sleeve 6. The pin hole III 601 passes through the pulling sleeve 6. A pin hole II 402 is provided at the rear end of the tool rod 4. The pin hole III 601 and the pin hole II 402 pass through the tool rod 4. The pin hole III 601 and the pin hole II 402 are coaxial. A connecting pin 7 is inserted into the pin hole III 601 and the pin hole II 402.

[0044] The setting of the pulling sleeve 6 plays a supporting role on the tool rod 4 on the one hand, and on the other hand, the pulling sleeve 6 can drive the tool rod 4 to move and thus drive the tool rod 4 to be removed after the processing is completed.

[0045] When the present invention is in use, the center frame 15 of the CNC lathe 1 can also be set on a side of the deep hole sleeve 2 away from the CNC lathe 1, thereby ensuring the stability of the deep hole sleeve 2.

Claims

1. A deep hole sleeve processing device for a lathe, characterized in that: The tool bar support shaft (3), the tool bar (4), the broach seat (8), the broach bar (9) and the turning tool mounting ring (10) are included. The tool bar support shaft (3) includes a tapered column (301), a stop table (302) and a support column (303). The stop table (302) is arranged between the tapered column (301) and the support column (303). The tapered column (301), the stop table (302) and the support column (303) are coaxial. The outer diameter of the stop table (302) is larger than the outer diameter of the support column (303). The tapered column (301) is inserted into the tapered hole of the lathe spindle. The tool rod (4) is plugged into the support column (303), the end of the tool rod (4) is connected to the stop table (302), the turning tool mounting ring (10) is slidably sleeved on the outer wall of the tool rod (4), and the turning tool mounting ring (10) is connected to a turning tool mounting seat (1003) on the outer wall of the side close to the lathe chuck. There are two turning tool mounting seats (1003), and the two turning tool mounting seats (1003) are symmetrical with the axis of the turning tool mounting ring (10) as the center. A turning tool (16) is fixedly connected to the two turning tool mounting seats (1003). A support ear I (1001) is provided on the outer wall of the side of the mounting ring (10) away from the lathe chuck, and two support ears I (1001) are provided. The two support ears I (1001) are symmetrical with the axis of the turning tool mounting ring (10). The broaching seat (8) is fixedly connected to the lathe tool holder. A tool rod groove (804) is provided on the top of the broaching seat (8). The tool rod groove (804) is slidably connected to the outer wall of the tool rod (4). Two holes (805) are provided on the top of the broaching seat (8). Two broaching rods (9) are provided. The two broaching rods (9) are fixed respectively. Connected in the two holes (805), the ends of the two broaching rods (9) away from the two holes (805) are fixedly connected to the two support ears I (1001), the deep hole sleeve (2) is clamped on the lathe chuck, the tool rod (4), the turning tool mounting ring (10), the broaching rod (9) and the turning tool (16) are all arranged on the inner side of the deep hole sleeve (2), the turning tool (16) is turned on the inner wall of the deep hole sleeve (2), the rear end of the tool rod (4) extends out of the deep hole sleeve (2), and the broaching seat (8) is connected to the tool rod (4) extending out of the deep hole sleeve (2).

2. The deep hole sleeve processing device for a lathe according to claim 1, characterized in that: The broach seat (8) includes a base plate (801), a vertical plate (802) and a rib plate (803). The vertical plate (802) is fixedly connected to the top surface of the base plate (801). The tool bar groove (804) and two holes (805) are both provided on the vertical plate (802). The top surface of the tool bar groove (804) is open and the bottom surface is an arc. The two holes (805) are respectively provided on both sides of the tool bar groove (804). The rib plate (803) is fixedly connected between the base plate (801) and the vertical plate (802). There are two base plates (801). The base plate (801) is connected to the lathe tool holder by bolts. A through hole for the bolt to pass through is provided on the base plate (801), and a screw hole for the bolt connection is provided on the lathe tool holder.

3. The deep hole sleeve processing device for a lathe according to claim 2, characterized in that: The two support ears I (1001) are fixedly connected with a stud (1002), and the stud (1002) is arranged on the side of the support ear I (1001) away from the turning tool mounting seat (1003). The two studs (1002) are coaxial with the two holes (805) respectively. The inner wall of one end of the broaching rod (9) is provided with an internal thread (901), and the outer wall of the other end of the broaching rod (9) is provided with an external thread (902). The outer wall of the broaching rod (9) is fixedly connected with a stop table II (903), and the stop table II (903) is arranged close to the external thread (902). The internal thread (901) is connected to the stud (1002), and the external thread (902) is inserted into the hole (805). After the external thread (902) passes through the hole (805), it is connected with a nut, and the vertical plate (802) is clamped between the stop table II (903) and the nut.

4. The deep hole sleeve processing device for a lathe according to claim 3, characterized in that: The bottom outer wall of the tool rod (4) is provided with a keyway (405), and a guide key (5) is fixedly connected in the keyway (405). The bottom inner wall of the turning tool mounting ring (10) is provided with a slide groove I (1004), and the slide groove I (1004) is slidably connected to the sub-guide key (5).

5. The deep hole sleeve processing device for a lathe according to claim 4, characterized in that: The guide keys (5) are linearly and evenly distributed in the keyway (405), and each guide key (5) is connected to the keyway (405) by a countersunk screw. The guide key (5) is provided with a countersunk hole for the countersunk screw to pass through; and the bottom surface of the keyway (405) is provided with a screw hole for the countersunk screw to connect.

6. A deep hole sleeve processing device for a lathe according to any one of claims 1 to 4, characterized in that: The tool bar fixing assembly (11) is also included. The tool bar fixing assembly (11) is arranged between the deep hole sleeve (2) and the broach seat (8). The tool bar fixing assembly (11) includes a fixing seat (12) and a pressure plate (13). The fixing seat (12) includes a base (1201) and a column (1202). The column (1202) is fixedly connected to the top surface of the base (1201). The base (1201) is slidably connected to the lathe guide rail. A screw hole is provided on the base (1201). A bolt is connected in the screw hole. The front end of the bolt is connected to the lathe guide rail. The pressure plate (13) is fixedly connected. On the top surface of the column (1202), the pressure plate (13) is connected to the column (1202) by bolts. The pressure plate (13) is provided with a through hole for the bolt to pass through, and the column (1202) is provided with a screw hole for the bolt to connect. A knife rod hole (17) and a sliding hole (18) are provided between the pressure plate (13) and the fixed seat (12). There are two sliding holes (18), and the two sliding holes (18) are respectively provided on the left and right sides of the knife rod hole (17). The knife rod (4) is fixedly connected in the knife rod hole (17), and the two pull knife rods (9) are respectively slidably connected in the two sliding holes (18).

7. The deep hole sleeve processing device for a lathe according to claim 6, characterized in that: The top surface of the column (1202) is provided with a semicircular arc groove I (1203) and a semicircular arc groove II (1204), two semicircular arc grooves II (1204) are provided, and the two semicircular arc grooves II (1204) are respectively provided on both sides of the semicircular arc groove I (1203), the pressing plate (13) includes an arc plate (1301) and a support ear II (1302), two support ears II (1302) are provided, and the two support ears II (1302) are fixedly connected to the left and right sides of the arc plate (1301), and the bottom surface of the arc plate (1301) is provided with a semicircular arc groove III (1304) and a semi-circular groove IV (1305), two semi-circular grooves IV (1305) are provided, the two semi-circular grooves IV (1305) are respectively provided on both sides of the semi-circular groove III (1304), the semi-circular groove III (1304) is provided at the top of the semi-circular groove I (1203), the semi-circular groove III (1304) and the semi-circular groove I (1203) form a shank hole (17), the two semi-circular grooves II (1204) are respectively provided at the top of the two semi-circular grooves IV (1305), the semi-circular groove II (1204) and the semi-circular groove IV (1305) form a sliding hole (18).

8. The deep hole sleeve processing device for a lathe according to claim 7, characterized in that: The arc plate (1301) is provided with a pin hole IV (1303), and the knife rod (4) is provided with a pin hole I (401), the pin hole I (401) passes through the knife rod (4), the pin hole I (401) and the pin hole IV (1303) are coaxial, and a positioning pin (14) is inserted into both the pin hole I (401) and the pin hole IV (1303).

9. A deep hole sleeve machining device for a lathe according to any one of claims 1, 2, 3, 4, 5, 7, and 8, characterized in that: The tailstock of the CNC lathe (1) is fixedly connected with a pulling sleeve (6), the rear end of the tool rod (4) passes through the tool rod groove (804) and is inserted into the pulling sleeve (6), the pulling sleeve (6) is provided with a pin hole III (601), the pin hole III (601) passes through the pulling sleeve (6), the rear end of the tool rod (4) is provided with a pin hole II (402), the pin hole II (402) passes through the tool rod (4), the pin hole III (601) and the pin hole II (402) are coaxial, and a connecting pin (7) is inserted into the pin hole III (601) and the pin hole II (402).

10. The deep hole sleeve processing device for a lathe according to claim 9, characterized in that: The knife rod (4) is provided with a measuring hole (403), which is a waist-shaped hole. The measuring hole (403) passes through the knife rod (4). There are multiple measuring holes (403), and the multiple measuring holes (403) are linearly evenly distributed along the length direction of the knife rod (4).

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