Tool holder seat structure of a turret lathe

Abstract

The utility model provides a tool fixing seat structure of lathe tool turret, relates to tool fixing seat technical field, tool mounting seat is connected with four locating blocks on the fixedly, four locating grooves which are corresponding and are adapted with four locating blocks are all set up on the tool turret, the detachable connection through screw between tool mounting seat and tool turret, the number of screw is same with the number of locating block and sets up one -to -one correspondence, the utility model provides a tool fixing seat structure of lathe tool turret, through setting up locating block, tool mounting seat, tool turret, screw, prevent the mechanism of unhooking and limit rotation and fixed mechanism, can fix the position between locating block and tool turret, limit the rotation of screw again, reduce the screw rotation loosening caused by vibration when the equipment works, limit the depth of threaded rod in the tool turret of screw to keep invariant simultaneously, thereby reduce the loosening of screw, ensure the firmness of tool mounting seat, guarantee the precision of product processing.

Description

Technical Field

[0001] The present invention relates to the technical field of tool fixing seats, and in particular to a tool fixing seat structure of a turret lathe. Background Art

[0002] In the field of modern mechanical processing, the turret lathe is the core equipment for achieving high-precision and high-efficiency parts processing. Its performance directly affects the processing quality and production efficiency of the workpiece. The tool holder structure is the key component for carrying and fixing the tool in the turret lathe. The rationality, stability and adaptability of its structural design play a decisive role in the positioning accuracy, stress state and service life of the tool during the cutting process. With the development of the manufacturing industry towards intelligence, high speed and precision, the requirements for the tool holder structure of the turret lathe are also increasing. The traditional tool holder structure has gradually exposed many problems that need to be solved.

[0003] Among the existing tool fixing seat structures of turret lathes, the bolt-tightened fixing seat structure is widely used due to its simple structure and low cost. However, in the actual processing process, when facing high-speed cutting or large cutting force conditions, the bolts are affected by vibration and alternating loads and are very likely to loosen. This will not only cause the tool to shift during the processing process, significantly reduce the processing accuracy of the workpiece, but may even cause safety accidents such as tool falling off. At the same time, frequent bolt tightening and disassembly operations also increase the labor intensity of operators and reduce the production efficiency of equipment. For example, when cutting materials with higher hardness, the probability of bolt loosening increases significantly, and operators are often required to frequently stop the machine to check and tighten the bolts, which seriously affects the continuity of processing and production progress. Summary of the Invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a tool fixing seat structure of a turret lathe.

[0005] The present invention provides a tool fixing seat structure for a turret lathe, comprising a tool mounting seat and a turret, wherein four positioning blocks are fixedly connected to the tool mounting seat, and the turret is provided with four positioning grooves corresponding to and matching the four positioning blocks.

[0006] The tool mounting seat and the turret are detachably connected by screws, the number of the screws being the same as the number of the positioning blocks and being arranged in a one-to-one correspondence, the screws comprising a hexagonal nut and a threaded rod, one end of the threaded rod being fixedly connected to one end of the hexagonal nut, and the other end of the threaded rod sequentially passing through the tool mounting seat and the positioning block and being threadedly connected to the turret;

[0007] The tool mounting seat is provided with an anti-slip and rotation-limiting mechanism, which can prevent the hexagonal nut from rotating on the tool mounting seat and can also fix the position of the positioning block in the positioning groove;

[0008] A fixing mechanism is installed on the turret, and the fixing mechanism is used to fix the position of the end of the threaded rod in the turret.

[0009] Preferably, the anti-slip and rotation-limiting mechanism comprises a positioning pin, a rotation-limiting rod, a driving member and a transmission member; a receiving groove capable of receiving the positioning pin is provided on the side of the positioning block, and an anti-slip hole adapted to the end of the positioning pin is provided on the inner wall of the positioning groove, and the end of the positioning pin can be inserted into the anti-slip hole;

[0010] The rotation-limiting rod is slidably installed in the positioning block, and one end of the rotation-limiting rod passes through the positioning block and the tool mounting seat. The bottom end of the hexagonal nut is circumferentially provided with a plurality of rotation-limiting grooves adapted to the end of the rotation-limiting rod around the threaded rod, and the end of the rotation-limiting rod can be inserted into the limiting groove;

[0011] The driving member can drive the rotation-limiting rod to move upward;

[0012] When the rotation-limiting rod moves upward, the transmission member can transmit the upward movement of the rotation-limiting rod to the movement of the positioning pin being inserted into the anti-drop hole laterally.

[0013] Preferably, the driving member includes a No. 1 spring; the No. 1 spring is located in the positioning block, and the No. 1 spring can make the rotation-limiting rod have a tendency to move upward.

[0014] Preferably, the transmission member includes a long transmission gear; the long transmission gear is rotatably installed in the positioning block, and the positioning pin and the rotation-limiting rod are both engaged with the long transmission gear.

[0015] Preferably, the limiting groove is slidably mounted with an ejection mechanism, and the ejection mechanism can drive the end of the rotation-limiting rod to disengage from the limiting groove.

[0016] Preferably, the ejection mechanism includes an ejection tooth, a connecting ring, a connecting rod and a ring piece; the number of the ejection teeth is the same as the number of the limiting grooves and is arranged in a one-to-one correspondence, the ejection teeth are slidably arranged in the limiting grooves, the ends of the plurality of ejection teeth are connected to a connecting ring, and the bottom of the hexagonal nut is provided with an annular groove that slides with the connecting ring;

[0017] One end of the connecting rod is fixedly connected to the connecting ring, and the other end of the connecting rod passes through the hexagonal nut and extends into the hexagonal groove of the hexagonal nut and is fixedly connected to the ring piece, and the ring piece is slidably set in the hexagonal groove at the top of the hexagonal nut.

[0018] Preferably, the fixing mechanism includes a docking pin, a latching pin, a second spring, a pushing assembly, and a pressing assembly; a telescopic slot is provided on the bottom inner wall of the positioning slot, the docking pin is slidably installed in the telescopic slot, and a docking hole adapted to the docking pin is provided at the bottom end of the threaded rod;

[0019] The outer periphery of the docking pin is provided with a hidden hole capable of receiving the latching pin, and the inner wall of the docking hole is provided with an annular fixing groove adapted to the latching pin;

[0020] The second spring is installed in the telescopic slot, and the two ends of the second spring are respectively against the bottom inner wall of the telescopic slot and the bottom surface of the docking pin;

[0021] The ejection assembly is used to drive the latch pin to extend and retract in the hidden hole;

[0022] The pressing assembly is used to drive the docking pin to retract into the telescopic slot.

[0023] Preferably, the ejection assembly includes a driving inclined plane block, a transverse inclined plane block, a No. 3 spring and a retracting member; a lifting slot is provided in the docking pin, the driving inclined plane block is slidably installed in the lifting slot, the transverse inclined plane block is fixedly connected to the end of the clamping pin, and a transverse slot is provided in the docking pin for sliding cooperation with the transverse inclined plane block, and the inclined surface of the transverse inclined plane block is slidably cooperated with the inclined surface of the driving inclined plane block;

[0024] The retracting member is used to drive the latching pin to retract into the hidden hole;

[0025] The No. 3 spring is located in the lifting groove, and the two ends of the No. 3 spring respectively abut against the bottom inner wall of the lifting groove and the bottom end of the driving inclined plane block.

[0026] Preferably, the retraction member includes a retraction spring; the retraction spring is located in the transverse displacement groove, and both ends of the retraction spring respectively abut against the transverse displacement inclined plane block and the inner wall of the end of the transverse displacement groove.

[0027] Preferably, the pressing assembly includes a lifting rod, a pressing rod, a No. 4 spring and a pressing plate; the bottom end of the lifting rod passes through the top end of the docking pin and extends into the lifting slot, and the driving ramp block is fixedly connected to the side of the lifting rod;

[0028] One end of the pressing rod passes through the hexagonal nut and the threaded rod in sequence and extends into the docking hole. The outer periphery of the pressing rod is circumferentially connected to a boss. A boss slide groove is provided in the threaded rod to slide with the boss. The No. 4 spring is located in the boss slide groove. The two ends of the No. 4 spring respectively abut against the boss and the inner wall of the end of the boss slide groove.

[0029] The pressing plate is fixedly connected to the top end of the pressing rod, and the pressing plate is slidably arranged in the hexagonal groove on the top end of the hexagonal nut.

[0030] The tool fixing seat structure of a turret lathe proposed in the present invention has the following beneficial effects: through the provision of a positioning block, a tool mounting seat, a turret, a screw, an anti-slip and rotation limiting mechanism and a fixing mechanism, the position between the positioning block and the turret can be fixed, and then the rotation of the screw can be limited, thereby reducing the loosening of the screw caused by vibration when the equipment is working, and at the same time limiting the depth of the threaded rod in the screw in the turret to remain unchanged, thereby reducing the loosening of the screw, ensuring the firmness of the tool mounting seat, and ensuring the accuracy of product processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a tool fixing seat structure of a turret lathe proposed by the present invention;

[0032] Figure 2 This is a cross-sectional view of the tool mounting seat and turret of a tool fixing seat structure of a turret lathe proposed by the present invention;

[0033] Figure 3 A tool fixing seat structure for a turret lathe proposed by the present invention Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 A tool fixing seat structure for a turret lathe proposed by the present invention Figure 2 Enlarged view of point B in the middle;

[0035] Figure 5 A cross-sectional view of a screw in a tool fixing seat structure of a turret lathe proposed by the present invention;

[0036] Figure 6 This is a top view of the push-out teeth, connecting ring, connecting rod and ring piece in the tool fixing seat structure of a turret lathe proposed by the present invention;

[0037] Figure 7 This is a schematic structural diagram of a driving ramp block and a lifting rod in a tool fixing seat structure of a turret lathe proposed by the present invention;

[0038] Figure 8 This is a structural schematic diagram of a pressing rod and a pressing plate in a tool fixing seat structure of a turret lathe proposed by the present invention;

[0039] Figure 9 The present invention provides a cross-sectional view of a docking pin in a tool fixing seat structure of a turret lathe.

[0040] In the figure: 1. Tool mounting seat; 2. Turret; 3. Positioning block; 4. Hexagon socket nut; 5. Threaded rod; 6. Positioning pin; 7. Limiting rod; 8. Spring No. 1; 9. Transmission long gear; 10. Push-out gear; 11. Connecting ring; 12. Connecting rod; 13. Ring plate; 14. Docking pin; 15. Snap-in pin; 16. Spring No. 2; 17. Driving ramp block; 18. Transverse ramp block; 19. Spring No. 3; 20. Lifting rod; 21. Pressing rod; 22. Spring No. 4; 23. Pressing plate; 24. Retraction spring. DETAILED DESCRIPTION

[0041] Reference Figures 1-9 The present invention proposes a tool fixing seat structure of a turret lathe, including a tool mounting seat 1 and a turret 2, wherein four positioning blocks 3 are fixedly connected to the tool mounting seat 1, and the turret 2 is provided with four positioning grooves corresponding to and matching the four positioning blocks 3. When the tool mounting seat 1 is installed, the four positioning blocks 3 are inserted into the corresponding positioning grooves to ensure the position of the tool mounting seat 1, and the tool mounting seat 1 and the turret 2 are detachably connected by screws. The number of screws is the same as the number of positioning blocks 3 and is set in one-to-one correspondence. The screw includes a hexagonal nut 4 and a threaded rod 5. One end of the threaded rod 5 is fixedly connected to one end of the hexagonal nut 4, and the other end of the threaded rod 5 sequentially passes through the tool mounting seat 1, the positioning block 3 and is threadedly connected to the turret 2. After the position of the tool mounting seat 1 is aligned, the tool mounting seat 1 is installed on the turret 2 by screws, thereby ensuring the firmness of the tool mounting seat 1. In the current actual situation, long-term use will cause the vibration of the CNC lathe to cause The screw becomes loose, which causes the tool mounting seat 1 and the tool to become loose, resulting in a large error in the processing accuracy of the product. Therefore, the following design is provided: an anti-slip and rotation-limiting mechanism is installed on the tool mounting seat 1, which can prevent the hexagonal nut 4 from rotating on the tool mounting seat 1, and the anti-slip and rotation-limiting mechanism can also fix the position of the positioning block 3 in the positioning groove. During specific use, the rotation of the hexagonal nut 4 is restricted by the anti-slip and rotation-limiting mechanism, thereby reducing the rotation of the threaded rod 5 and reducing the loosening of the tool mounting seat 1 caused by the rotation of the threaded rod 5, thereby ensuring the accuracy of product processing. In addition, the anti-slip and rotation-limiting mechanism fixes the position of the positioning block 3 in the positioning groove, thereby ensuring the firmness of the tool mounting seat 1 installation, and a fixing mechanism is installed on the turret 2, which is used to fix the position of the end of the threaded rod 5 in the turret 2. Finally, the position of the threaded rod 5 in the turret 2 is fixed by the fixing mechanism, thereby ensuring the firmness of the tool mounting seat 1 and the accuracy of product processing.

[0042] like Figure 2 and Figure 3As shown in, the anti-slip and rotation-limiting mechanism includes a positioning pin 6, a rotation-limiting rod 7, a driving member and a transmission member; a receiving groove that can accommodate the positioning pin 6 is opened on the side of the positioning block 3, and an anti-slip hole that matches the end of the positioning pin 6 is opened on the inner wall of the positioning groove, and the end of the positioning pin 6 can be inserted into the anti-slip hole, and the rotation-limiting rod 7 is slidably installed in the positioning block 3, and one end of the rotation-limiting rod 7 passes through the positioning block 3 and the tool mounting seat 1, and the bottom end of the hexagonal nut 4 is circumferentially provided with a plurality of rotation-limiting grooves that match the end of the rotation-limiting rod 7 around the threaded rod 5, and the end of the rotation-limiting rod 7 can be inserted into the limiting groove, and the driving member can drive the rotation-limiting rod 7 to move upward, and when the rotation-limiting rod 7 moves upward, the transmission member can transmit the upward movement of the rotation-limiting rod 7 to the movement of the positioning pin 6 inserted laterally into the anti-slip hole, and the driving member includes a No. 1 spring 8; the No. 1 spring 8 is located at the positioning block 3, and the No. 1 spring 8 can make the limiting rod 7 have a tendency to move upward, and the transmission part includes a long transmission gear 9; the long transmission gear 9 is rotatably installed in the positioning block 3, and the positioning pin 6 and the limiting rod 7 are engaged with the long transmission gear 9. In the specific working process, the No. 1 spring 8 makes the limiting rod 7 have a tendency to move upward. When the limiting rod 7 moves upward, the positioning pin 6 is driven to be inserted horizontally into the anti-slip hole through the long transmission gear 9; the end of the limiting rod 7 is inserted into the limiting groove to limit the rotation of the hexagonal nut 4, and the positioning pin 6 is inserted into the anti-slip hole to fix the position of the positioning block 3, ensuring the stability of the screw, reducing the loosening of the screw during long-term use, ensuring the firmness of the installation of the tool mounting seat 1, ensuring the accuracy of product processing, and also reducing the maintenance frequency of the operator, reducing the workload of frequently tightening the screws, and improving production efficiency.

[0043] like Figure 5 and Figure 6As shown in, the limiting groove is slidably installed with an ejection mechanism, which can drive the end of the limiting rod 7 to disengage from the limiting groove. The ejection mechanism includes a pushing tooth 10, a connecting ring 11, a connecting rod 12 and a ring piece 13; the number of pushing teeth 10 is the same as the number of limiting grooves and is arranged one by one. The pushing teeth 10 are slidably set in the limiting groove, and the ends of multiple pushing teeth 10 are connected to a connecting ring 11. The bottom of the hexagonal nut 4 is provided with an annular groove that slides with the connecting ring 11. One end of the connecting rod 12 is fixedly connected to the connecting ring 11, and the other end of the connecting rod 12 passes through the hexagonal nut 4 and extends to the hexagonal groove of the hexagonal nut 4 and is fixedly connected to the ring piece 13. The ring piece 13 is slidably set in the hexagonal nut When the screw needs to be removed, the hexagonal slot at the top of the cap 4 is inserted into the hexagonal slot at the top of the hexagonal nut 4. The hexagonal slot presses the ring piece 13 downward, and the ring piece 13 drives the connecting rod 12, the connecting ring 11 and the ejection tooth 10 to descend synchronously. When the ejection tooth 10 descends, it abuts against the top of the limiting rod 7, and the limiting rod 7 is pushed out of the limiting slot. The hexagonal nut 4 can be rotated to remove the threaded rod 5 from the turret 2. Similarly, after the installation is completed, the limiting rod 7 is lifted up by the work of the No. 1 spring 8, and the top end of the limiting rod 7 is inserted into the limiting slot at the corresponding position of the bottom end of the hexagonal nut 4, thereby fixing the position of the hexagonal nut 4, and the limiting rod 7 lifts up the ejection tooth 10 in the limiting slot.

[0044] like Figure 4 、 Figure 7 and Figure 9As shown in, the fixing mechanism includes a docking pin 14, a card pin 15, a No. 2 spring 16, a pushing assembly and a pressing assembly; a telescopic slot is provided on the bottom inner wall of the positioning slot, and the docking pin 14 is slidably installed in the telescopic slot, and a docking hole is provided at the bottom end of the threaded rod 5 to match the docking pin 14, and a hidden hole is provided on the outer periphery of the docking pin 14 to accommodate the card pin 15, and an annular fixing groove is provided on the inner wall of the docking hole to match the card pin 15, and the No. 2 spring 16 is installed in the telescopic slot, and the two ends of the No. 2 spring 16 respectively abut against the bottom inner wall of the telescopic slot and the bottom surface of the docking pin 14, and the pushing assembly is used to drive the card pin 15 to retract in the hidden hole, and the pressing assembly is used to drive the docking pin 14 to retract into the telescopic slot. In the specific working process, when installing the screws, when installing the screws, the threaded rod 5 is inserted With the turret 2, the docking pin 14 is extended under the action of the No. 2 spring 16. Under the action of the pressing component, the docking pin 14 cannot enter the docking hole, and the docking pin 14 is pushed down and retracted into the telescopic slot. While the pressing component tends to lower the docking pin 14, it ensures that the locking pin 15 is retracted into the hidden hole. As the threaded rod 5 is tightened, the pressing component is gradually loosened, and the docking pin 14 is gradually inserted into the docking hole under the rebound action of the No. 2 spring 16. After the docking pin 14 is inserted into the docking hole, the locking pin 15 is pushed out of the hidden hole and inserted into the annular fixing groove under the action of the pushing component. At this time, the docking pin 14 is in the highest raised position, fixing the position of the end of the threaded rod 5 in the turret 2, reducing the situation where the threaded rod 5 becomes loose and pulled out, and ensuring the stability and firmness of the installation of the tool mounting seat 1.

[0045] like Figure 4 、 Figure 7 and Figure 9 As shown in , the ejection assembly includes a driving ramp block 17, a transverse ramp block 18, a No. 3 spring 19 and a retraction member; a lifting groove is provided in the docking pin 14, and the driving ramp block 17 is slidably installed in the lifting groove, and the transverse ramp block 18 is fixedly connected to the end of the card pin 15, and a transverse groove is provided in the docking pin 14 with which the transverse ramp block 18 slides. The inclined surface of the transverse ramp block 18 slides with the inclined surface of the driving ramp block 17, and the retraction member is used to drive the card pin 15 to retract into the hidden hole. The No. 3 spring 19 is located in the lifting groove, and the two ends of the No. 3 spring 19 are respectively connected to the bottom inner wall of the lifting groove and the bottom inner wall of the driving ramp block 17 The end is abutted, and the retraction part includes a retraction spring 24; the retraction spring 24 is located in the transverse groove, and the two ends of the retraction spring 24 are respectively abutted against the transverse inclined plane block 18 and the inner wall of the end of the transverse groove. The retraction spring 24 can drive the card pin 15 to retract into the hidden hole, and drive the driving inclined plane block 17 to move upward under the rebound action of the No. 3 spring 19. When the driving inclined plane block 17 moves upward, it slides with the inclined plane of the transverse inclined plane block 18 and makes the transverse inclined plane block 18 move laterally. The transverse inclined plane block 18 drives the card pin 15 to move laterally and insert into the annular fixed groove, thereby fixing the position of the end of the threaded rod 5 in the turret 2.

[0046] like Figure 2 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 9 As shown in, the pressing assembly includes a lifting rod 20, a pressing rod 21, a No. 4 spring 22 and a pressing plate 23; the bottom end of the lifting rod 20 passes through the top of the docking pin 14 and extends into the lifting slot, and the driving ramp block 17 is fixedly connected to the side of the lifting rod 20, and one end of the pressing rod 21 passes through the hexagonal nut 4 and the threaded rod 5 in sequence and extends into the docking hole, and the outer periphery of the pressing rod 21 is circumferentially connected with a boss, and a boss slide groove that slides with the boss is opened in the threaded rod 5, and the No. 4 spring 22 is located in the boss slide groove, and the two ends of the No. 4 spring 22 respectively abut against the inner wall of the end of the boss and the boss slide groove, and the pressing plate 23 is fixedly connected to the top of the pressing rod 21, and the pressing plate 23 is slidably set in the hexagonal groove at the top of the hexagonal nut 4. In the specific use process, the pressing plate 23 can Blocking the top opening of the hexagonal groove at the top of the hexagonal nut 4 can prevent some dirt such as lubricating oil from entering the hexagonal groove. During disassembly, the hexagonal wrench rests on the pressing plate 23, causing the pressing plate 23 to descend in the hexagonal groove. During the descending process of the pressing plate 23, the ring piece 13 will be driven to descend, thereby driving the ejection tooth 10 to descend synchronously, and the rotation limit rod 7 can be pushed out of the limiting groove, thereby ensuring that the hexagonal nut 4 can rotate. When the pressing plate 23 descends, the pressing plate 23 will drive the pressing rod 21 to descend synchronously, and the bottom end of the pressing rod 21 rests on the top of the lifting rod 20, so that the lifting rod 20 is retracted into the docking pin 14. Under the rebound action of the retraction spring 24, the locking pin 15 is retracted into the docking pin 14, which can ensure the normal disassembly and installation of the threaded rod 5.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tool fixing seat structure of a turret lathe, characterized in that: It comprises a tool mounting seat (1) and a turret (2), wherein four positioning blocks (3) are fixedly connected to the tool mounting seat (1), and the turret (2) is provided with four positioning grooves corresponding to and matching the four positioning blocks (3) in a one-to-one manner; The tool mounting seat (1) and the turret (2) are detachably connected via screws, the number of the screws being the same as the number of the positioning blocks (3) and being arranged in a one-to-one correspondence, the screws comprising a hexagonal nut (4) and a threaded rod (5), one end of the threaded rod (5) being fixedly connected to one end of the hexagonal nut (4), and the other end of the threaded rod (5) sequentially passing through the tool mounting seat (1), the positioning block (3) and being threadedly connected to the turret (2); The tool mounting seat (1) is provided with an anti-slip and rotation-limiting mechanism, which can prevent the hexagonal nut (4) from rotating on the tool mounting seat (1), and can also fix the position of the positioning block (3) in the positioning groove; A fixing mechanism is installed on the turret (2), and the fixing mechanism is used to fix the position of the end of the threaded rod (5) inside the turret (2); The anti-slip and rotation-limiting mechanism comprises a positioning pin (6), a rotation-limiting rod (7), a driving member and a transmission member; a side surface of the positioning block (3) is provided with a receiving groove capable of receiving the positioning pin (6); an inner wall of the positioning groove is provided with an anti-slip hole adapted to the end of the positioning pin (6); the end of the positioning pin (6) can be inserted into the anti-slip hole; The rotation-limiting rod (7) is slidably mounted in the positioning block (3), and one end of the rotation-limiting rod (7) passes through the positioning block (3) and the tool mounting seat (1). The bottom end of the hexagonal nut (4) is provided with a plurality of rotation-limiting grooves circumferentially around the threaded rod (5) and adapted to the end of the rotation-limiting rod (7). The end of the rotation-limiting rod (7) can be inserted into the limiting groove. The driving member is capable of driving the rotation-limiting rod (7) to move upward; When the rotation-limiting rod (7) moves upward, the transmission member can transmit the upward movement of the rotation-limiting rod (7) to the movement of the positioning pin (6) being inserted laterally into the anti-drop hole; The fixing mechanism includes a docking pin (14), a latching pin (15), a second spring (16), a pushing assembly and a pressing assembly; a telescopic slot is provided on the bottom inner wall of the positioning slot, the docking pin (14) is slidably mounted in the telescopic slot, and a docking hole adapted to the docking pin (14) is provided at the bottom end of the threaded rod (5); The outer periphery of the docking pin (14) is provided with a hidden hole capable of receiving the snap-in pin (15), and the inner wall of the docking hole is provided with an annular fixing groove adapted to the snap-in pin (15); The second spring (16) is installed in the telescopic slot, and the two ends of the second spring (16) respectively abut against the bottom inner wall of the telescopic slot and the bottom surface of the docking pin (14); The ejection assembly is used to drive the latch pin (15) to extend and retract in the hidden hole; The pressing assembly is used to drive the docking pin (14) to retract into the telescopic slot.

2. The tool fixing seat structure of a turret lathe according to claim 1, characterized in that: The driving member includes a No. 1 spring (8); the No. 1 spring (8) is located in the positioning block (3), and the No. 1 spring (8) can make the rotation-limiting rod (7) have a tendency to move upward.

3. The tool fixing seat structure of a turret lathe according to claim 2, characterized in that: The transmission member comprises a long transmission gear (9); the long transmission gear (9) is rotatably mounted in the positioning block (3), and the positioning pin (6) and the rotation-limiting rod (7) are both engaged with the long transmission gear (9).

4. The tool fixing seat structure of a turret lathe according to claim 3, characterized in that: The limiting groove is slidably mounted with an ejection mechanism, and the ejection mechanism can drive the end of the rotation-limiting rod (7) to disengage from the limiting groove.

5. The tool fixing seat structure of a turret lathe according to claim 4, characterized in that: The ejection mechanism comprises an ejection tooth (10), a connecting ring (11), a connecting rod (12) and a ring piece (13); the number of the ejection teeth (10) is the same as the number of the limiting grooves and is arranged in a one-to-one correspondence, the ejection teeth (10) are slidably arranged in the limiting grooves, the ends of the plurality of ejection teeth (10) are all connected to a connecting ring (11), and the bottom of the hexagonal nut (4) is provided with an annular groove that is slidably matched with the connecting ring (11); One end of the connecting rod (12) is fixedly connected to the connecting ring (11), and the other end of the connecting rod (12) passes through the hexagonal socket nut (4) and extends into the hexagonal socket of the hexagonal socket nut (4) to be fixedly connected to the ring piece (13), and the ring piece (13) is slidably arranged in the hexagonal socket at the top of the hexagonal socket nut (4).

6. The tool fixing seat structure of a turret lathe according to claim 1, characterized in that: The ejection assembly includes a driving inclined plane block (17), a transverse inclined plane block (18), a third spring (19) and a retracting member; a lifting slot is provided in the docking pin (14), the driving inclined plane block (17) is slidably installed in the lifting slot, the transverse inclined plane block (18) is fixedly connected to the end of the clamping pin (15), and a transverse slot is provided in the docking pin (14) for sliding cooperation with the transverse inclined plane block (18), and the inclined surface of the transverse inclined plane block (18) is slidably cooperated with the inclined surface of the driving inclined plane block (17); The retracting member is used to drive the latching pin (15) to retract into the hidden hole; The third spring (19) is located in the lifting groove, and the two ends of the third spring (19) respectively abut against the bottom inner wall of the lifting groove and the bottom end of the driving inclined surface block (17).

7. The tool fixing seat structure of a turret lathe according to claim 6, characterized in that: The retracting member includes a retraction spring (24); the retraction spring (24) is located in the transverse displacement groove, and the two ends of the retraction spring (24) respectively abut against the transverse displacement inclined plane block (18) and the inner wall of the end of the transverse displacement groove.

8. The tool fixing seat structure of a turret lathe according to claim 7, characterized in that: The pressing assembly includes a lifting rod (20), a pressing rod (21), a No. 4 spring (22) and a pressing plate (23); the bottom end of the lifting rod (20) passes through the top end of the docking pin (14) and extends into the lifting slot, and the driving bevel block (17) is fixedly connected to the side of the lifting rod (20); One end of the pressing rod (21) passes through the hexagonal nut (4) and the threaded rod (5) in sequence and extends into the docking hole. The outer periphery of the pressing rod (21) is circumferentially connected to a boss. A boss slot that slides with the boss is provided in the threaded rod (5). The fourth spring (22) is located in the boss slot. Both ends of the fourth spring (22) abut against the boss and the inner wall of the end of the boss slot, respectively. The pressing plate (23) is fixedly connected to the top end of the pressing rod (21), and the pressing plate (23) is slidably arranged in the hexagonal groove at the top end of the hexagonal nut (4).

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