Combined double-sided turning tool for lathe deep hole machining

Abstract

The invention relates to the technical field of lathe deep hole machining, in particular to a combined double-sided turning tool for lathe deep hole machining, which comprises a tool bar and a turning tool apron movably mounted at the upper end of the tool bar, the tool bar is formed by combining a clamping part and a containing part, and curved surface chutes are respectively formed in two sides of the turning tool apron; the double-faced turning tool has the beneficial effects that the tool bar and the turning tool apron are designed by adopting a split structure, so that the turning tool apron can be used as a compensation block at the upper part of the accommodating part when being hidden and can be used as a base of the double-faced turning tool when extending out, the milling of upper and lower planes in deep hole machining is realized, and the problems of limited deep hole machining and single function of an existing turning tool are solved; the combined structure of the tool bar and the tool apron can be optimized, stable operation of the turning tool during deep hole turning and milling can be achieved, drilling and milling of deep holes can be achieved, efficient storage and independent storage without disassembly of all parts when the turning tool is idle are achieved, and the effect that one object has multiple purposes is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lathe deep hole processing, in particular to a combined double-sided turning tool for lathe deep hole processing. Background Art

[0002] The combined double-sided turning tool is a new type of tool designed to address the various defects that occur in traditional lathe tools during use. Traditional lathe tools have many shortcomings in cutting bars, grooving workpieces and threading. At present, most turning tools can only perform single-sided processing during the processing process. For some shell parts, when the upper and lower surfaces need to be processed, there will be certain limitations. The product needs to be turned over for secondary clamping and secondary processing, which undoubtedly greatly reduces the production efficiency in mass production.

[0003] In the prior art, for example, a lathe double-sided turning tool for deep hole machining with publication number CN216263476U includes a workbench, a turning tool body, a threaded rod and a connecting block, a fixed block is fixed on one side of the workbench, a second motor is fixed on one side of the fixed block, a third through hole is opened on one side of the fixed block, a transmission shaft rotatably connected to the second motor extends into the third through hole, a housing is fixed on one side of the transmission shaft rotatably connected to the second motor, and the housing is plugged into a cylinder. The turning tool can be adjusted according to the size of the deep hole to be machined, thereby improving work efficiency.

[0004] In order to solve the problem that the double-sided turning tool for deep hole machining cannot be adjusted according to the size of the deep hole to be machined, resulting in reduced work efficiency, the prior art uses thread adaptation to achieve deep hole size adjustment.

[0005] However, in actual use, it can only realize the aperture turning of a single plane, and it is impossible to simultaneously perform step hole processing on the upper and lower surfaces. The deep hole processing positioning effect is not good. In addition, the functionality of the turning tool is single, and the blade cannot be hidden when the turning tool is idle.

[0006] Therefore, the present invention proposes a combined double-sided turning tool for lathe deep hole processing to solve the problem that the existing turning tools are limited in deep hole processing and have single functionality. The combined structure of the tool bar and the tool seat can be optimized, which can not only meet the stable operation of the turning tool during deep hole turning and milling, but also meet the drilling and milling of deep holes, and also meet the safe storage of the turning tool when idle, thereby achieving the effect of one thing for multiple uses. Summary of the invention

[0007] The object of the present invention is to provide a combined double-sided turning tool for deep hole machining on a lathe to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined double-sided turning tool for deep hole processing on a lathe, comprising a tool rod and a turning tool seat movably mounted on its upper end, the tool rod being composed of a clamping portion and a receiving portion, curved inclined grooves being respectively arranged on both sides of the turning tool seat, and tool seat side receiving grooves being opened on the other two opposite sides of the turning tool seat, a side double-sided turning tool assembly being movably mounted inside each group of the tool seat side receiving grooves, two groups of the side double-sided turning tool assemblies being arranged, and a center thread drill being arranged on the central inner surface of the upper end of the turning tool seat.

[0009] Preferably, the side double-sided turning tool assembly includes a column bolt, a threaded fastening base plate and a turning tool. The threaded fastening base plate is detachably connected to the turning tool. The inner surface of the threaded fastening base plate is threadedly connected to the outer surface of the column bolt. Both ends of the column bolt pass through the inner wall of the curved bevel groove and are threadedly connected thereto.

[0010] Preferably, a limiting installation groove is provided at one end of the turning tool away from the threaded fastening base plate, a blade is fixedly installed on the inner side of the limiting installation groove by bolts, and the turning tool is movably installed on the inner side of the storage groove on the side of the tool holder.

[0011] Preferably, the turning tool and the blade are provided in two groups, and the two groups of the turning tool and the blade are relatively distributed. A circular hole and a limiting T-slot are provided on the inner wall of the turning tool. The circular hole is provided in two groups, and the two groups of the circular holes are both provided on the upper inner wall of the turning tool. A screw sleeve is provided inside the circular hole, and a cylindrical groove is provided on the central inner wall of the screw sleeve.

[0012] Preferably, a center limiting boss is fixedly installed on the bottom surface of the inner cavity of the circular hole, and the outer surface of the center limiting boss is movably connected to the inner surface of the cylindrical groove provided on the central inner wall of the screw sleeve, and the outer ring surface of the screw sleeve is rotatably connected to the inner surface of the circular hole, and reserved arc grooves are respectively provided on the inner walls on both sides of the screw sleeve, and the reserved arc grooves are in the form of an inwardly concave curved groove body structure, and the inner surface of the reserved arc groove is movably abutted against a locking push rod.

[0013] Preferably, the locking push rods are provided in two groups and are symmetrically distributed about the central axis of the screw sleeve, and the two groups of locking push rods are provided with rounded corners at one end close to the screw sleeve, and the outer surface of the rounded corners is movably abutted against the inner surface of the reserved arc groove, and the outer surface of the locking push rods is movably connected to the inner surface of the limiting T-slot.

[0014] Preferably, a fixed connecting plate is fixedly installed on the upper surface of the locking push rod, and the upper outer surface of the fixed connecting plate is movably connected to the inner top surface of the limiting T-slot, and the outer side surface of the fixed connecting plate is fixedly connected to an elastic block, and the other end of the elastic block is fixedly connected to a blocking block, and the blocking block is fixedly installed on the inner top surface of the limiting T-slot.

[0015] Preferably, locking grooves are respectively provided on the inner walls on both sides of the storage groove on the side of the knife holder, and the inner surface of the locking groove is movably plugged with the outer surface of the locking push rod.

[0016] Preferably, a turning tool holder receiving groove is provided on the central inner wall of the receiving portion, the inner surface of the turning tool holder receiving groove is movably connected to the outer surface of the turning tool holder, an electromagnetic block 1 is fixedly installed on the bottom surface of the inner cavity of the turning tool holder receiving groove, an electromagnetic block 2 is electromagnetically connected above the electromagnetic block 1, and the electromagnetic block 2 is fixedly installed on the lower bottom surface of the turning tool holder.

[0017] Preferably, telescopic sleeve rods and return springs are provided on both sides of the electromagnetic block, the lower ends of the telescopic sleeve rods and return springs are fixedly connected to the bottom surface of the inner cavity of the turning tool seat accommodating groove, the upper end outer surfaces of the telescopic sleeve rods and return springs are respectively fixedly connected to the bottom surface of the turning tool seat, and the return spring sliding sleeve is arranged on the outside of the telescopic sleeve rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a combined double-sided turning tool for deep hole processing on a lathe, in which the tool bar and the tool holder are designed with a split structure, so that the tool holder can be used as a compensating block on the upper part of the accommodating part when hidden, and can be used as a base of the double-sided turning tool when extended, thereby realizing milling of the upper and lower planes of deep hole processing, solving the problem that the existing turning tools are limited in deep hole processing and have single functionality, and can optimize the combined structure of the tool bar and the tool holder, which can not only meet the stable operation of the turning tool during deep hole turning and milling processing, but also meet the drilling and milling of deep holes, and also meet the efficient storage of various components when the turning tool is idle, without the need to disassemble and store separately, thereby achieving the effect of one thing for multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a schematic diagram of the structure of the turning tool holder of the present invention in a state where the turning tool holder is hidden in the receiving portion; Figure 2 This is a schematic structural diagram of a state where a turning tool holder of the present invention extends out of the turning tool holder; Figure 3 It is a schematic diagram of a partially hidden cross-sectional structure of a turning tool holder of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A; Figure 5 It is a schematic diagram of the connection structure between the receiving portion and the tool holder of the extended turning tool of the present invention; Figure 6 It is a schematic diagram of the partial cross-sectional structure of the side double-sided turning tool assembly after being unfolded; Figure 7 It is a schematic diagram of a partial cross-sectional structure of the side double-sided turning tool assembly after being stored; Figure 8For the present invention Figure 7 A schematic diagram of the enlarged structure at B; Fig. 9 It is a schematic diagram of the side cross-sectional structure of the turning tool holder of the present invention; Fig.10 It is a structural schematic diagram of a single-group side double-sided turning tool assembly of the present invention; Fig.11 It is a schematic diagram of the side cross-sectional structure of the side double-sided turning tool assembly of the present invention; Fig.12 For the present invention Fig.11 A schematic diagram of the enlarged structure at C; Fig.13 It is a schematic diagram of the exploded structure of the screw sleeve bolt and the turning tool of the present invention; Fig.14 It is a structural schematic diagram of the deep hole processing state of the present invention.

[0019] In the figure: 1. tool bar; 11. clamping part; 12. receiving part; 120. receiving groove of tool holder; 1200. side groove; 1201. strip debris collection frame; 2. tool holder; 21. curved bevel groove; 22. center thread drill; 23. side double-sided tool assembly; 231. column bolt; 232. threaded fastening base plate; 233. tool; 234. blade; 24. electromagnetic block 1; 241. electromagnetic block 2; 242. telescopic sleeve rod; 243. reset spring; 20. side receiving groove of tool holder; 2330. circular hole; 2331. center limiting convex column; 3. screw sleeve bolt; 30. reserved arc groove; 31. locking push rod; 311. fixed connecting piece; 312. elastic block; 313. blocking block; 23300. limiting T-slot; 201. locking groove. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] For example, see Figure 1 - Fig.14The present invention provides a technical solution: a combined double-sided turning tool for deep hole processing on a lathe, comprising a tool bar 1 and a turning tool seat 2 movably mounted on the upper end thereof, the tool bar 1 being composed of a clamping portion 11 and a receiving portion 12, curved inclined grooves 21 being respectively arranged on both sides of the turning tool seat 2, and tool seat side receiving grooves 20 being respectively opened on the other two opposite sides of the turning tool seat 2, and side double-sided turning tool assemblies 23 being movably mounted inside each group of tool seat side receiving grooves 20, and two groups of side double-sided turning tool assemblies 23 are arranged, and a center thread drill is arranged on the inner surface of the upper center of the turning tool seat 2 Tool 22; by designing the tool rod 1 and the turning tool holder 2 with a split structure, the turning tool holder 2 can be used as compensation for the upper part of the accommodating portion 12 when hidden, and can be used as a base for the double-sided turning tool when extended, to achieve milling of the upper and lower planes of deep hole processing, solving the problem of limited deep hole processing and single functionality of existing turning tools, and the combined structure of the tool rod and the tool holder can be optimized, which can not only meet the stable operation of the turning tool during deep hole turning and milling, and meet the drilling and milling of deep holes, but also meet the efficient storage of various components when the turning tool is idle, without the need to disassemble and store separately, achieving the effect of one thing for multiple uses.

[0022] Embodiment 2, on the basis of embodiment 1, in order to realize double-sided processing of deep holes of lathe and quick storage of double-sided turning tools when idle, this embodiment further proposes: the side double-sided turning tool assembly 23 includes a column bolt 231, a threaded fastening base plate 232 and a turning tool 233, the threaded fastening base plate 232 and the turning tool 233 are detachably connected, the inner surface of the threaded fastening base plate 232 is threadedly connected to the outer surface of the column bolt 231, and the two ends of the column bolt 231 pass through the inner wall of the curved bevel groove 21 and are threadedly connected thereto; a limited opening is provided at one end of the turning tool 233 away from the threaded fastening base plate 232 The inner side of the limiting installation groove is fixed with a blade 234 by bolts, and the turning tool 233 is movably installed on the inner side of the storage groove 20 on the side of the tool holder; the turning tool 233 and the blade 234 are provided with two groups, and the two groups of turning tools 233 and blades 234 are relatively distributed. A circular hole 2330 and a limiting T-shaped slot 23300 are opened on the inner wall of the turning tool 233. There are two groups of circular holes 2330, and the two groups of circular holes 2330 are opened on the upper inner wall of the turning tool 233. A screw sleeve bolt 3 is arranged inside the circular hole 2330, and a cylindrical groove is opened on the central inner wall of the screw sleeve bolt 3; In this embodiment, the tool holder side receiving grooves 20 provided on both sides of the tool holder 2 can accommodate two sets of side double-sided tool assemblies 23. When double-sided processing of deep holes is required, Figure 5 - Figure 6 As shown, the column bolt 231 passes through one end of the threaded fastening base plate 232 and extends to the inner wall of the curved inclined groove 21 to be threadedly adapted thereto, ensuring that the threaded fastening base plate 232 and the turning tool 233 achieve a fastening effect, as shown in FIG. Figure 6As shown, the two sets of turning tools 233 are horizontal, one set of blades 234 faces upward, and the other set of blades 234 faces downward, so that the two sets of blades 234 are in two different horizontal planes. When the workpiece is fixed by the clamp and fed, the two sets of blades 234 perform deep hole processing on the workpiece; it is worth noting that the blades 234 are fastened to the limit mounting grooves by bolts, and a knife pad is installed at the bottom of the blades 234. The two are fixedly connected and fixed by bolts to form a stable whole, so as to prevent damage to the blades 234 during the locking process and increase the locking force. force, reducing the vibration of the blade 234, and further improving the stability of the deep hole drill during processing; when the side double-sided turning tool assembly 23 is not needed and the center thread drill 22 is needed for auxiliary drilling, the side double-sided turning tool assembly 23 is hidden as a whole, and the center thread drill 22 here can be used for preliminary drilling and positioning. Specifically, the column bolt 231 is rotated in the opposite direction, and the side double-sided turning tool assembly 23 is turned downward to ensure that the side double-sided turning tool assembly 23 is completely stored in the inner side of the tool holder side storage groove 20, which can achieve the effect of one thing serving two purposes.

[0023] Embodiment 3, on the basis of embodiment 2, in order to realize the locking of the double-sided turning tool assembly 23 on the side and the storage groove 20 on the side of the tool holder after storage to avoid accidental ejection, this embodiment further proposes: a center limiting boss 2331 is fixedly installed on the bottom surface of the inner cavity of the circular hole 2330, and the outer surface of the center limiting boss 2331 is movably connected to the inner surface of the cylindrical groove opened on the central inner wall of the screw sleeve bolt 3, and the outer ring surface of the screw sleeve bolt 3 is rotatably connected to the inner surface of the circular hole 2330, and reserved arc grooves 30 are respectively opened on the inner walls of both sides of the screw sleeve bolt 3, and the reserved arc grooves 30 are in an inwardly concave curved groove structure, and the inner surface of the reserved arc groove 30 is movably abutted with a locking push rod 31; the locking push rod 31 is provided with two groups and is symmetrically distributed about the central axis of the screw sleeve bolt 3, and the two groups of locking push rods 31 are provided with rounded corners at one end close to the screw sleeve bolt 3, and the outer surface of the rounded corners is in contact with the inner surface of the reserved arc groove 30 The cam 312 is a block 311 that is fixedly connected to the locking cam 310 of the locking cam 310, and the cam 312 is a block 311 that is fixedly connected to the locking cam 310 of the locking cam 310. In this embodiment, a circular hole 2330 is provided on the surface of the turning tool 233 for installing the screw sleeve bolt 3, and a central limiting protrusion 2331 is fixedly provided on the bottom surface of the circular hole 2330 as a limiting piece for installing the screw sleeve bolt 3. When the side double-sided turning tool assembly 23 is completely stored inside the side storage groove 20 of the tool holder, the hand holds the screw sleeve bolt 3 and rotates it 90° to the left or right. At this time, the locking push rods 31 on both sides of the screw sleeve bolt 3 are locked by the reserved arc groove 30. The limiting activity moves relatively to both sides respectively, and the rounded corners of the locking push rod 31 are in conflict with the outer ring surface of the screw sleeve bolt 3 under the continuous rotation of the screw sleeve bolt 3. At the same time, the locking push rod 31 slides on the inner wall of the limiting T-shaped groove 23300 respectively, and then is inserted into the inner side of the locking groove 201 respectively, so as to lock the turning tool 233 to prevent accidental falling off; it is worth noting that by connecting the elastic block 3 on the upper surface of the locking push rod 31 When the locking cam 31 is in the state of being moved back and forth, the locking cam 313 is in the state of being moved back and forth, so that the locking cam 313 can be moved back and forth when the locking cam 31 is in the state of being moved back and forth, so that the locking cam 313 can be moved back and forth when the locking cam 31 is in the state of being moved back and forth.

[0024] Embodiment 4, on the basis of embodiment 3, in order to realize that the turning tool seat 2 is hidden as a whole in the middle of the accommodating portion 12, this embodiment further proposes: a turning tool seat accommodating groove 120 is opened on the central inner wall of the accommodating portion 12, the inner surface of the turning tool seat accommodating groove 120 is movably connected to the outer surface of the turning tool seat 2, an electromagnetic block 1 24 is fixedly installed on the inner cavity bottom surface of the turning tool seat accommodating groove 120, and an electromagnetic block 2 241 is electromagnetically connected above the electromagnetic block 1 24, and the electromagnetic block 2 241 is fixedly installed on the lower bottom surface of the turning tool seat 2; telescopic sleeve rod 242 and reset spring 243 are arranged on both sides of the electromagnetic block 1 24, the lower ends of the telescopic sleeve rod 242 and the reset spring 243 are fixedly connected to the inner cavity bottom surface of the turning tool seat accommodating groove 120, the upper end outer surfaces of the telescopic sleeve rod 242 and the reset spring 243 are respectively fixedly connected to the bottom surface of the turning tool seat 2, and the reset spring 243 is slidably sleeved on the outside of the telescopic sleeve rod 242; In this embodiment, when the turning tool holder 2 needs to be received as a whole in the inner cavity of the turning tool holder receiving groove 120, refer to Figure 3As shown, when the turning tool holder 2 extends out of the receiving portion 12, it is always powered by the electromagnetic block 1 24. Specifically, when the electromagnetic block 1 24 is powered on, it always generates a repulsive force on the electromagnetic block 2 241, so that the electromagnetic block 241 pushes the turning tool holder 2 to be disengaged as a whole, so that both sides of the side storage groove 20 of the holder are exposed. At the same time, when the electromagnetic block 241 pushes the turning tool holder 2 to move outward, the telescopic sleeve rod 242 and the return spring 243 are elastically stretched by the pulling force of the turning tool holder 2, playing a role of guiding, limiting and buffering. When the turning tool holder 2 is completely pushed out, the curved bevel groove 21 is also in an exposed state. It is worth noting that the curved bevel groove 21 is set as an inclined surface. When the center thread drill 22 is used to drill the center of the aperture, the generated debris will exist in the inclined surface formed by the curved bevel groove 21 and the turning tool holder 2. When the turning tool holder 2 is extended out of the receiving portion 12 as a whole, the accumulated debris is discharged together; and by Figure 3 It can be clearly seen that the inner cavity of the side storage groove 20 of the tool holder is divided into two parts, one part is used to store the side double-sided turning tool assembly 23, and the other part is in a cavity state. It is worth noting that even if the cavity part of the side storage groove 20 of the tool holder accumulates a certain amount of debris due to the drilling operation of the blade 234 and is not processed in time, when the turning tool holder 2 is recovered to the inner cavity of the turning tool holder receiving groove 120, the cavity position of the side storage groove 20 of the tool holder is exposed by disassembling the strip debris collection frame 1201, so that the accumulated debris can be cleaned in time to avoid damage to the blade 234 and blockage of the turning tool holder receiving groove 120. In this way, the side storage groove 20 of the tool holder can not only realize the storage of the tool, but also is suitable for the collection and cleaning of debris, and is fully functional.

[0025] In actual use, step 1, preparation for deep hole double-sided processing on the lathe: pass both ends of the column bolt 231 through the inner wall of the curved bevel groove 21 and threadedly connect it to ensure that the turning tool 233 is away from the limit installation groove opened at one end of the threaded fastening base plate 232, and the blade 234 is fixedly installed by bolts, and the two sets of turning tools 233 and the blade 234 are adjusted to relatively distributed positions to ensure that they are in two different horizontal planes for double-sided processing; step 2, deep hole double-sided processing: start the tool and rotate the lathe as a whole. At this time, the two sets of blades 234 process deep holes of two apertures on the surface of the workpiece; step 3, store the tool and lock it: after the processing is completed, rotate the column bolt 231 in the opposite direction, and rotate the side double-sided turning tool assembly 23 downward as a whole, and store it in the inner side of the storage groove 20 on the side of the tool holder. On the surface of the turning tool 233, the screw sleeve bolt 3 installed through the circular hole 2330 is locked, and the hand buckle Take the screw sleeve bolt 3 and rotate it 90° to the left or right, so that the locking push rods 31 on both sides of the screw sleeve bolt 3 are limited by the reserved arc groove 30, move relatively to both sides, and insert into the inner side of the lock groove 201 to achieve locking; Step 4, overall storage of the turning tool and cleaning of debris: When the turning tool holder 2 needs to be stored as a whole in the inner cavity of the turning tool holder receiving groove 120, ensure that the electromagnetic block 1 24 and the electromagnetic block 2 241 are powered on. At this time, the electromagnetic block 1 24 is electrically connected to the electric The second magnetic block 241 generates a repulsive force, pushing the turning tool holder 2 out as a whole. After the turning tool holder 2 is completely pushed out, the debris accumulated in the inclined surface formed by the curved inclined groove 21 and the turning tool holder 2 can be cleaned. At the same time, the debris in the hollow part of the storage groove 20 on the side of the tool holder can also be checked and cleaned. After cleaning, the turning tool holder 2 is recovered as a whole into the inner cavity of the turning tool holder receiving groove 120 to ensure efficient storage of various components when the turning tool is idle, without the need to disassemble and store them separately.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined double-sided turning tool for deep hole machining on a lathe, comprising a tool bar (1) and a turning tool holder (2) movably mounted on the upper end thereof, characterized in that: The tool rod (1) is composed of a clamping portion (11) and a receiving portion (12), and curved inclined grooves (21) are respectively provided on two sides of the turning tool seat (2), and tool seat side receiving grooves (20) are respectively provided on the other two opposite sides of the turning tool seat (2), and a side double-sided turning tool assembly (23) is movably installed inside each group of the tool seat side receiving grooves (20), and two groups of the side double-sided turning tool assemblies (23) are provided, and a center thread drill (22) is provided on the central inner surface of the upper end of the turning tool seat (2).

2. The combined double-sided turning tool for deep hole machining on a lathe according to claim 1, characterized in that: The side double-sided turning tool assembly (23) comprises a column bolt (231), a threaded fastening base plate (232) and a turning tool (233); the threaded fastening base plate (232) and the turning tool (233) are detachably connected; the inner surface of the threaded fastening base plate (232) is threadedly connected to the outer surface of the column bolt (231); and both ends of the column bolt (231) penetrate the inner wall of the curved bevel groove (21) and are threadedly connected thereto.

3. The combined double-sided turning tool for deep hole machining on a lathe according to claim 2, characterized in that: A limiting installation groove is provided at one end of the turning tool (233) away from the threaded fastening base plate (232), a blade (234) is fixedly mounted on the inner side of the limiting installation groove by means of bolts, and the turning tool (233) is movably mounted on the inner side of the storage groove (20) on the tool holder side.

4. The combined double-sided turning tool for deep hole machining on a lathe according to claim 3, characterized in that: The turning tool (233) and the blade (234) are provided in two groups, and the two groups of the turning tool (233) and the blade (234) are relatively distributed. A circular hole (2330) and a limiting T-shaped slot (23300) are provided on the inner wall of the turning tool (233). Two groups of the circular holes (2330) are provided, and the two groups of the circular holes (2330) are provided on the upper inner wall of the turning tool (233). A screw sleeve bolt (3) is provided inside the circular hole (2330), and a cylindrical slot is provided on the central inner wall of the screw sleeve bolt (3).

5. The combined double-sided turning tool for deep hole machining on a lathe according to claim 4, characterized in that: A central limiting boss (2331) is fixedly mounted on the bottom surface of the inner cavity of the circular hole (2330); the outer surface of the central limiting boss (2331) is movably connected to the inner surface of a cylindrical groove provided on the central inner wall of the screw sleeve (3); the outer ring surface of the screw sleeve (3) is rotatably connected to the inner surface of the circular hole (2330); reserved arc grooves (30) are respectively provided on the inner walls on both sides of the screw sleeve (3); the reserved arc grooves (30) are in the form of an inwardly concave curved groove structure; the inner surface of the reserved arc groove (30) is movably abutted against a locking push rod (31).

6. The combined double-sided turning tool for deep hole machining on a lathe according to claim 5, characterized in that: The locking push rods (31) are provided in two groups and are symmetrically distributed about the central axis of the screw sleeve bolt (3). The two groups of locking push rods (31) are provided with rounded corners at one end close to the screw sleeve bolt (3). The outer surface of the rounded corner is movably abutted against the inner surface of the reserved arc groove (30). The outer surface of the locking push rod (31) is movably connected to the inner surface of the limiting T-shaped groove (23300).

7. The combined double-sided turning tool for deep hole machining on a lathe according to claim 6, characterized in that: A fixed connecting piece (311) is fixedly mounted on the upper surface of the locking push rod (31); the upper outer surface of the fixed connecting piece (311) is movably connected to the inner top surface of the limiting T-shaped slot (23300); an elastic block (312) is fixedly connected to the outer side surface of the fixed connecting piece (311); the other end of the elastic block (312) is fixedly connected to a blocking block (313); and the blocking block (313) is fixedly mounted on the inner top surface of the limiting T-shaped slot (23300).

8. The combined double-sided turning tool for deep hole machining on a lathe according to claim 1, characterized in that: Locking grooves (201) are respectively provided on the inner walls of both sides of the knife seat side storage groove (20), and the inner surface of the locking groove (201) is movably plugged with the outer surface of the locking push rod (31).

9. The combined double-sided turning tool for deep hole machining on a lathe according to claim 1, characterized in that: A turning tool holder receiving groove (120) is provided on the central inner wall of the receiving portion (12); the inner surface of the turning tool holder receiving groove (120) is movably connected to the outer surface of the turning tool holder (2); an electromagnetic block 1 (24) is fixedly mounted on the inner cavity bottom surface of the turning tool holder receiving groove (120); an electromagnetic block 2 (241) is electromagnetically connected above the electromagnetic block 1 (24); and the electromagnetic block 2 (241) is fixedly mounted on the lower bottom surface of the turning tool holder (2).

10. The combined double-sided turning tool for deep hole machining on a lathe according to claim 9, characterized in that: A telescopic sleeve rod (242) and a return spring (243) are provided on both sides of the electromagnetic block 1 (24); the lower ends of the telescopic sleeve rod (242) and the return spring (243) are fixedly connected to the bottom surface of the inner cavity of the lathe tool holder accommodating groove (120); the upper end outer surfaces of the telescopic sleeve rod (242) and the return spring (243) are respectively fixedly connected to the bottom surface of the lathe tool holder (2); and the return spring (243) is slidably sleeved on the outside of the telescopic sleeve rod (242).

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