A turret for a numerical control machine tool

Abstract

The application relates to a tool tower for a numerical control machine tool, comprising a tower body, a tool disc, a plurality of tool seats, a protective cover arranged on the tower body, wherein the protective cover comprises a cover body and a cover plate; a first matching part is arranged on the cover body, a second matching part is arranged on the cover plate, the first matching part and the second matching part are inserted and matched when the cover plate is connected with the cover body, so as to limit the rotation of the cover body relative to the cover plate; a plurality of first sliding grooves are arranged on the tool disc, and a plurality of tool seats are slidingly arranged in the first sliding grooves; a driving device is arranged on the tower body, and the driving device is used for driving the tool seats on the machining station to slide; a limiting ring block is rotationally arranged on the cover plate, and the limiting ring block blocks the notches of the plurality of first sliding grooves when the cover plate is connected with the cover body; when the cover plate moves away from the cover body, a space for disassembling the tool seats is formed between the cover body and the cover plate. The tool tower can protect the tool and facilitate the disassembly and assembly of the tool seats on the tool disc.

Description

Technical Field

[0001] This invention relates to the field of CNC machining equipment, and in particular to a tool turret for CNC machine tools. Background Technology

[0002] The turret is an important machining component on a CNC machine tool, mainly used to mount various cutting tools such as lathe tools.

[0003] Chinese patent CN222958103U discloses a high-strength turret, including a turret body and a turret base, with multiple tool holders for mounting tools on the turret body.

[0004] The cutting tools of the above products are exposed. When using a CNC lathe to sample-process some complex parts, if the program is wrong, it will cause the machine tool to collide with the tool. Once the machine tool collides with the tool, all the exposed tools are likely to collide with the workpiece and break. Therefore, the above tool turret does not have protective performance. Summary of the Invention

[0005] This application provides a tool turret for CNC machine tools, which can protect the unprocessed tool and facilitate the disassembly and assembly of the tool holder on the tool turret.

[0006] The CNC machine tool turret provided in this application adopts the following technical solution:

[0007] A CNC machine tool turret includes a turret body, a tool disc mounted on a rotating shaft of the turret body, and multiple tool holders arranged annularly on the tool disc for mounting tools. The turret body is provided with a protective cover, which includes a cover body and a cover plate. The cover body is rotatably connected to the rotating shaft of the turret body. Mounting plates are provided on both the upper and lower sides of the turret body, and guide rods are provided on both mounting plates. The cover plate is slidably mounted on the two guide rods. A first mating part is provided on the cover body, and a second mating part is provided on the cover plate. When the cover plate is connected to the cover body, the first mating part and the second mating part engage, thereby restricting the rotation of the cover body relative to the cover plate.

[0008] The cutter head is located between the cover and the cover plate. The cutter head is provided with a plurality of first sliding grooves, and a plurality of the tool holders are slidably disposed in the first sliding grooves. The cover is provided with a clearance groove. When a tool holder rotates to face the clearance groove, it is located at the machining station. The tower body is provided with a driving device. The driving device is used to drive the tool holder at the machining station to slide so that the tool on the tool holder extends out of the clearance groove.

[0009] The cover plate is rotatably provided with a limiting ring block. When the cover plate is connected to the cover body, the limiting ring block blocks the openings of multiple first sliding grooves to prevent the tool holder from disengaging from the first sliding groove. When the cover plate moves away from the cover body, a space for assembling and disassembling the tool holder is formed between the cover body and the cover plate.

[0010] Preferably, the driving device includes an electric cylinder mounted on the tower body, a top block mounted on the output shaft of the electric cylinder, and multiple first springs respectively mounted in multiple first sliding grooves. The first springs are in contact with the tool holder and always drive the tool holder to move toward the limiting ring block. The top block is located between the cover body and the cover plate, and the tool holder located at the machining station is on the movement path of the top block. When the output shaft of the electric cylinder retracts, the top block pushes the cover plate away from the cover body. When the output shaft of the electric cylinder extends, the top block pushes the tool holder located at the machining station toward the clearance groove. When the cover plate is connected to the cover body, the first spring presses the tool holder against the limiting ring block. When the cover plate moves away from the cover body, the first spring drives the tool holder to slide toward the cover plate, so that the end of the tool holder near the cover plate slides out of the first sliding groove.

[0011] Preferably, the first mating part includes a plurality of slots provided on the cover body, and the second mating part includes a plurality of inserts provided on the cover plate, wherein the plurality of inserts are inserted into the plurality of slots and restrict the cover body from rotating relative to the cover plate.

[0012] Preferably, a second spring is fitted on each of the two guide rods. The two ends of the two second springs abut against the corresponding mounting plate and the cover plate, respectively. The elastic force of the two second springs acts on the cover plate and always drives the cover plate to move toward the cover body.

[0013] Preferably, the cutter head includes a limiting body and a mounting body. The limiting body is sleeved on the rotating shaft of the tower body, and the mounting body is rotatably connected to the rotating shaft of the tower body, while also being sleeved on the outside of the limiting body. Multiple first sliding grooves are formed on the mounting body. A first slot is formed on the side wall of the limiting body, and a second slot is formed on the side wall of the mounting body. A locking block is slidably disposed in the first slot along the length direction of the first sliding groove, and the locking block extends into the second slot and engages with the second slot. A limiting groove is formed in the limiting body and connected to the first slot. A limiting block is slidably disposed in the limiting groove and connected to the locking block. A second power unit for driving the movement of the limiting block is provided in the limiting body. When the locking block moves with the limiting block and disengages from the second slot, the mounting body can rotate relative to the limiting body.

[0014] Preferably, the second power unit includes a third spring, which is disposed in the limiting groove. The third spring is located on the side of the limiting block facing away from the cover plate. The elastic force of the third spring acts on the limiting block, which always drives the limiting block to slide closer to the cover plate. When the cover plate is connected to the cover body, the limiting ring block presses the locking block against the second locking groove, thereby keeping the locking block in the state of being locked into the second locking groove.

[0015] Preferably, the mounting body is detachably connected to an anti-detachment block, which is located on the side of the limiting block near the cover plate. After the limiting ring block moves away from the cover plate, the third spring rebounds and drives the limiting block to slide, so that the limiting block slides to abut against the anti-detachment block. At this time, the locking block moves out of the second locking groove.

[0016] The main technical effects of this invention are reflected in the following aspects:

[0017] 1. When the present invention needs to process a workpiece, the output shaft of the electric cylinder extends and drives the tool holder to slide through the top block, so that the tool on the tool holder extends out of the clearance groove;

[0018] 2. When the tool holder needs to be disassembled or assembled, the output shaft of the electric cylinder retracts and pushes the cover plate away from the cover body through the top block, so that the slide can form a space between the cover body and the cover plate, which makes it convenient for technicians to disassemble or assemble the tool holder.

[0019] 3. When inspecting cutting tools, the present invention can drive the mounting body to rotate relative to the limiting body, so that multiple tool holders pass through the observation position in sequence, which facilitates a comprehensive inspection of the cutting tools. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the turret's state when the top block is in pause position two.

[0021] Figure 2 yes Figure 1 A partial sectional view of the turret along line AA.

[0022] Figure 3 This is an exploded view of the protective shield's structure.

[0023] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle.

[0024] Figure 5 This is a schematic diagram of the turret's state when the top block moves to the pause position.

[0025] Figure 6 yes Figure 5 A magnified view of a section at point C.

[0026] Figure 7 yes Figure 5 A partial sectional view of the turret along line DD.

[0027] Figure 8 yes Figure 7 A magnified view of a section at point E in the middle.

[0028] Figure 9 This is a schematic view of the turret's state when the top block is in the paused position.

[0029] Reference numerals: 1. Tower body; 11. Mounting plate; 12. Guide rod; 13. Rotating shaft; 14. First bearing; 15. Second bearing; 2. Cutter head; 21. First slide groove; 22. Limiting body; 23. Mounting body; 24. First slot; 25. Second slot; 26. Locking block; 27. Limiting groove; 28. Limiting block; 29. ​​Anti-detachment block; 3. Cutter holder; 4. Protective cover; 41. Cover body; 42. Cover plate; 43. Clearance groove; 44. Limiting ring block; 5. Drive device; 51. Electric cylinder; 52. Top block; 53. First spring; 6. First mating part; 61. Slot; 7. Second mating part; 71. Insert block; 8. Second spring; 9. Second power unit; 91. Third spring. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this application can be more easily understood and mastered.

[0031] Reference Figure 1 and Figure 2 This embodiment of a CNC machine tool turret includes a turret body 1 and a tool disc 2 mounted on a rotating shaft 13 of the turret body 1. A protective cover 4 is provided on the turret body 1, comprising a cover body 41 and a cover plate 42. A first bearing 14 is fitted onto the front end of the rotating shaft 13 of the turret body 1, and the cover body 41 is fitted onto the outer ring of the first bearing 14. Mounting plates 11 are provided on both the upper and lower sides of the turret body 1, and guide rods 12 are provided on both mounting plates 11. The cover plate 42 is slidably mounted on the two guide rods 12 along the length of the turret body 1, and is fitted onto the outside of the rotating shaft 13 of the turret body 1.

[0032] Reference Figure 1 Each of the two guide rods 12 is fitted with a second spring 8. The two ends of the two second springs 8 respectively abut against the corresponding mounting plate 11 and the cover plate 42. The elastic force of the two second springs 8 acts on the cover plate 42, constantly driving the cover plate 42 to move towards the cover body 41. Therefore, without the action of external force, the cover body 41 and the cover plate 42 are always in a connected state.

[0033] Reference Figure 1 and Figure 3 The cover 41 is provided with a first mating part 6, and the cover plate 42 is provided with a second mating part 7. The first mating part 6 and the second mating part 7 are inserted into each other to restrict the relative rotation of the cover 41 and the cover plate 42, so that the cover 41 cannot rotate with the cutter head 2. The first mating part 6 includes a plurality of slots 61 provided on the cover 41, and the second mating part 7 includes a plurality of inserts 71 provided on the cover plate 42. When the cover plate 42 is connected to the cover 41, the plurality of inserts 71 are inserted into the plurality of slots 61 and restrict the rotation of the cover 41 relative to the cover plate 42.

[0034] Reference Figure 1 and Figure 2The cutter head 2 is located between the cover 41 and the cover plate 42. The cutter head 2 includes a limiting body 22 and a mounting body 23. The limiting body 22 is sleeved and fixed on the rotating shaft 13 of the tower body 1. A second bearing 15 is sleeved on the rotating shaft 13 of the tower body 1, and the mounting body 23 is sleeved on the outer ring of the second bearing 15, and is also sleeved outside the limiting body 22.

[0035] Reference Figure 1 , Figure 2 , Figures 4-8 The limiting body 22 has a first slot 24 on its side wall facing the cover plate 42, and the mounting body 23 has a second slot 25 on its side wall facing the cover plate 42. A locking block 26 is slidably disposed in the first slot 24 along the length direction of the first sliding groove 21, and the locking block 26 extends into the second slot 25 and engages with the second slot 25. The limiting body 22 has a limiting groove 27 connected to the first slot 24, and the limiting groove 27 is located on the side of the first slot 24 away from the cover plate 42. A limiting block 28 is slidably disposed in the limiting groove 27, and the limiting block 28 is connected to the locking block 26. An anti-detachment block 29 is detachably connected to the mounting body 23, and the anti-detachment block 29 is located on the side of the limiting block 28 closer to the cover plate 42 and adjacent to the locking block 26.

[0036] Reference Figure 2 , Figure 4 , Figure 7 , Figure 8 The limiting body 22 is provided with a second power unit 9 for driving the movement of the limiting block 28. The second power unit 9 includes a third spring 91, which is disposed in the limiting groove 27. The third spring 91 is located on the side of the limiting block 28 facing away from the cover plate 42. The elastic force of the third spring 91 acts on the limiting block 28, which always drives the limiting block 28 to slide closer to the cover plate 42.

[0037] Reference Figures 2-4 , Figure 7 , Figure 8 A limiting ring block 44 is rotatably mounted on the cover plate 42. When the turret is in the machining state, the cover plate 42 is connected to the cover body 41, and the limiting ring block 44 presses the locking block 26 into the second locking groove 25, causing the mounting body 23 and the limiting body 22 to rotate synchronously. When the turret is in the tool changing state, the limiting ring block 44 will move away from the cover body 41 along with the cover plate 42, and the third spring 91 will rebound to drive the limiting block 28 and the locking block 26 to slide towards the cover plate 42. Finally, the limiting block 28 slides to abut against the anti-detachment block 29, and the locking block 26 slides out of the second locking groove 25. After the locking block 26 moves out of the second locking groove 25, the mounting body 23 can rotate relative to the limiting body 22.

[0038] Reference Figure 1 , Figure 2 , Figures 4-8The mounting body 23 has multiple first sliding grooves 21 on the side facing the cover plate 42. Each first sliding groove 21 is a T-shaped groove. A tool holder 3 is slidably disposed within each of the multiple first sliding grooves 21 along the length of the turret. When the cover plate 42 is connected to the cover body 41, a limiting ring block 44 blocks the openings of the multiple first sliding grooves 21 to prevent the tool holder 3 from detaching from the first sliding grooves 21. When the cover plate 42 moves away from the cover body 41, a space for assembling and disassembling the tool holder 3 is formed between the cover body 41 and the cover plate 42.

[0039] Reference Figure 1 and Figure 9 The cover 41 is provided with a clearance groove 43. When a certain tool holder 3 rotates to face the clearance groove 43, it is located on the processing station. The tower body 1 is provided with a drive device 5. The drive device 5 is used to drive the tool holder 3 on the processing station to slide so that the tool on the tool holder 3 extends out of the clearance groove 43.

[0040] Reference Figure 1 , Figure 2 , Figure 4 The driving device 5 includes an electric cylinder 51 mounted on the turret body 1, a top block 52 mounted on the output shaft of the electric cylinder 51, and multiple first springs 53 respectively mounted in multiple first sliding grooves 21. The top block 52 is located between the cover body 41 and the cover plate 42, and the tool holder 3 located at the machining station is exactly on the movement path of the top block 52. The multiple first springs 53 are respectively located on the side of the multiple tool holders 3 facing away from the cover plate 42, and the multiple first springs 53 respectively abut against the multiple tool holders 3, and always drive the tool holders 3 to move toward the limiting ring block 44. When the turret is in the machining state, when the cover plate 42 is connected to the cover body 41, the first springs 53 press the tool holders 3 against the limiting ring block 44.

[0041] Reference Figure 1 , Figure 5 and Figure 9 The encoder sets the program to the electric cylinder 51 so that the top block 52 has three pause positions, namely pause position one, pause position two and pause position three, where pause position two is located between pause position one and pause position three.

[0042] Reference Figure 1 , Figure 2 and Figure 9 Initially, the top block 52 is in the second pause position. When it is necessary to push the tool holder 3 to slide, the output shaft of the electric cylinder 51 extends, causing the top block 52 to move from the second pause position to the first pause position. During this process, the top block 52 pushes the tool holder 3 located at the machining station toward the clearance groove 43, so that the tool can extend out of the cover 41 through the clearance groove 43 to machine the workpiece. When the tool holder 3 slides close to the clearance groove 43, the tool holder 3 will press against the first spring 53, thereby further compressing the first spring 53.

[0043] Reference Figure 1 , Figure 2, Figure 5 and Figure 6 When a tool change is needed, the turret switches to the tool changing state. The extension and retraction of the output shaft of the electric cylinder 51 causes the top block 52 to move from the second pause position to the third pause position. The top block 52 pushes the cover plate 42 away from the cover body 41, creating sufficient space between the cover plate 42 and the cover body 41 to remove the tool holder 3. As the cover plate 42 moves away from the cover body 41, the first spring 53 drives the tool holder 3 to slide towards the cover plate 42, so that the end of the tool holder 3 near the cover plate 42 slides out of the first slide groove 21, making it easier for technicians to grasp the tool holder 3 and remove it from the cover body 41 from the first slide groove 21.

[0044] The workflow for Dota 2 in this application is as follows:

[0045] Reference Figure 1 , Figure 2 , Figure 4 Initially, the turret is in the processing state, the cover 41 and the cover plate 42 are connected to each other, multiple insert blocks 71 are inserted into multiple slots 61, the limiting ring block 44 restricts multiple tool holders 3 in multiple first slide grooves 21, and presses the locking block 26 against the second locking groove 25. At this time, the limiting body 22 and the mounting body 23 move synchronously.

[0046] Reference Figure 1 , Figure 2 and Figure 9 Technicians use a CNC machine tool to command the cutter head 2 to rotate, causing the tool holder 3, which is equipped with the selected tool, to rotate to the machining station. Then, the output shaft of the electric cylinder 51 extends, causing the top block 52 to move from the second pause position to the first pause position. During this process, the top block 52 pushes the tool holder 3 on the machining station toward the clearance groove 43, ultimately causing the tool on the tool holder 3 to pass through the clearance groove 43 and extend out of the cover 41, thus enabling the machining of the workpiece. When the tool holder 3 moves closer to the clearance groove 43, it presses against the first spring 53, causing the first spring 53 to be compressed.

[0047] Reference Figure 1 , Figure 2 and Figure 9 After the selected tool finishes machining, the output shaft of the electric cylinder 51 retracts, causing the top block 52 to move from the first pause position to the second pause position. During this process, the first spring 53 rebounds, driving the tool holder 3 to move along with the top block 52. Finally, the first spring 53 presses the tool holder 3 against the limiting ring block 44. Then, the above actions are repeated, allowing multiple tools to machine workpieces one by one according to a preset program.

[0048] Reference Figure 1 , Figure 5When the tool needs to be replaced for maintenance, the technicians use the CNC machine tool to give the command to the tool head 2 to switch to the tool changing state. The output shaft of the electric cylinder 51 will retract, causing the top block 52 to move from the pause position two to the pause position three. During this process, the top block 52 will push the cover plate 42 away from the cover body 41, causing the two second springs 8 to be compressed.

[0049] Reference Figure 1 , Figure 2 , Figures 4-8 As the cover plate 42 moves away from the cover body 41, the limiting ring block 44 gradually releases the blockage of the opening of the first slide groove 21. During this process, the first spring 53 pushes the knife holder 3 to move a small distance toward the cover plate 42, so that the end of the knife holder 3 near the cover plate 42 slides out of the first slide groove 21, making it easier for technicians to grasp the knife holder 3 and remove the cover body 41 from the first slide groove 21.

[0050] Reference Figure 1 , Figure 2 , Figures 4-8 Simultaneously, as the limiting ring 44 moves away from the cover 41 along with the cover plate 42, it releases its pressure on the locking block 26. The third spring 91 rebounds, driving the limiting block 28 and the locking block 26 to slide towards the cover plate 42. Finally, the limiting block 28 slides to contact the anti-detachment block 29, and the locking block 26 slides out of the second locking groove 25. After the locking block 26 moves out of the second locking groove 25, the mounting body 23 can rotate relative to the limiting body 22.

[0051] Reference Figures 4-8 Then, the technician can rotate the mounting body 23 and easily see the wear level of the tools on each tool holder 3 through the window of the CNC machine tool, without the need for the technician to crawl inside the CNC machine tool to check the wear condition of each tool. When the technician finds that a tool is worn to the point of needing replacement, the corresponding tool holder 3 can be directly removed from the mounting body 23 and taken out between the cover plate 42 and the cover body 41.

[0052] Reference Figure 1 , Figure 2 , Figures 4-8 After the tool holder 3 is replaced, all tool holders 3 are reinstalled into their corresponding first slide grooves 21. Then, the technician rotates the mounting body 23 so that the second slot 25 is aligned with the first slot 24, allowing the locking block 26 to move into the second slot 25. Then, the CNC machine tool issues a command, and the output shaft of the electric cylinder 51 extends, causing the top block 52 to move from the pause position three to the pause position two. During this process, the two second springs 8 rebound and drive the cover plate 42 to move closer to the cover body 41, connecting the cover plate 42 to the cover body 41. As the cover plate 42 moves closer to the cover body 41, the limiting ring block 44 presses multiple tool holders 3 back into multiple first slide grooves 21 and presses the locking block 26 into the first slot 24 and the second slot 25, thus re-locking the limiting body 22 and the mounting body 23.

[0053] Reference Figure 1 and Figure 3 After the cover 41 is connected to the cover plate 42, multiple insert blocks 71 will be inserted into multiple slots to restrict the cover 41 from rotating with the tool disc 2 and ensure the position of the clearance slot 43. After the top block 52 moves to the second pause position, the tool turret will re-enter the machining state and the workpiece can be machined.

[0054] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A tool turret for a CNC machine tool, comprising a turret body (1), a tool disc (2) disposed on a rotating shaft (13) of the turret body (1), and a plurality of tool holders (3) arranged in a ring on the tool disc (2) for mounting tools, characterized in that: The tower body (1) is provided with a protective cover (4), which includes a cover body (41) and a cover plate (42). The cover body (41) is rotatably connected to the rotating shaft (13) of the tower body (1). The tower body (1) is provided with mounting plates (11) on both the upper and lower sides. Each of the two mounting plates (11) is provided with a guide rod (12). The cover plate (42) is slidably mounted on the two guide rods (12). The cover body (41) is provided with a first mating part (6), and the cover plate (42) is provided with a second mating part (7). When the cover plate (42) is connected to the cover body (41), the first mating part (6) and the second mating part (7) are inserted and engaged, thereby restricting the rotation of the cover body (41) relative to the cover plate (42). The cutter head (2) is located between the cover (41) and the cover plate (42). The cutter head (2) is provided with a plurality of first sliding grooves (21), and a plurality of cutter holders (3) are slidably disposed in the first sliding grooves (21). The cover (41) is provided with a relief groove (43). When a cutter holder (3) rotates to face the relief groove (43), it is located on the machining station. The tower body (1) is provided with a driving device (5). The driving device (5) is used to drive the cutter holder (3) on the machining station to slide so that the cutter on the cutter holder (3) extends out of the relief groove (43). A limiting ring block (44) is rotatably provided on the cover plate (42). When the cover plate (42) is connected to the cover body (41), the limiting ring block (44) blocks the openings of multiple first sliding grooves (21) to restrict the tool holder (3) from disengaging from the first sliding groove (21). When the cover plate (42) moves away from the cover body (41), a space for assembling and disassembling the tool holder (3) is formed between the cover body (41) and the cover plate (42). The driving device (5) includes an electric cylinder (51) mounted on the tower body (1), a top block (52) mounted on the output shaft of the electric cylinder (51), and multiple first springs (53) respectively mounted in multiple first slide grooves (21). The first springs (53) are in contact with the tool holder (3) and always drive the tool holder (3) to move toward the limiting ring block (44). The top block (52) is located between the cover body (41) and the cover plate (42), and the tool holder (3) located at the machining station is on the movement path of the top block (52). When the output shaft of the electric cylinder (51) retracts, the top block (52) The first spring (53) will push the cover plate (42) away from the cover body (41) when the output shaft of the electric cylinder (51) extends. The top block (52) will push the tool holder (3) located at the machining station toward the clearance groove (43). When the cover plate (42) is connected to the cover body (41), the first spring (53) will press the tool holder (3) against the limiting ring block (44). When the cover plate (42) moves away from the cover body (41), the first spring (53) will drive the tool holder (3) to slide toward the cover plate (42) so that the end of the tool holder (3) near the cover plate (42) slides out of the first slide groove (21).

2. The tool turret for a CNC machine tool according to claim 1, characterized in that: The first mating part (6) includes a plurality of slots (61) provided on the cover (41), and the second mating part (7) includes a plurality of inserts (71) provided on the cover plate (42). The plurality of inserts (71) are inserted into the plurality of slots (61) and restrict the cover (41) from rotating relative to the cover plate (42).

3. A tool turret for a CNC machine tool according to claim 1, characterized in that: A second spring (8) is fitted on each of the two guide rods (12). The two ends of the two second springs (8) abut against the corresponding mounting plate (11) and the cover plate (42) respectively. The elastic force of the two second springs (8) acts on the cover plate (42) and always drives the cover plate (42) to move toward the cover body (41).

4. A tool turret for a CNC machine tool according to claim 3, characterized in that: The cutter head (2) includes a limiting body (22) and a mounting body (23). The limiting body (22) is sleeved on the rotating shaft (13) of the tower body (1). The mounting body (23) is rotatably connected to the rotating shaft (13) of the tower body (1) and is sleeved on the outside of the limiting body (22). Multiple first sliding grooves (21) are formed on the mounting body (23). A first slot (24) is formed on the side wall of the limiting body (22), and a second slot (25) is formed on the side wall of the mounting body (23). A locking block is slidably arranged in the first slot (24) along the length direction of the first sliding groove (21). 26), the card block (26) extends into the second card slot (25) and engages with the second card slot (25); the limiting body (22) has a limiting groove (27) connected to the first card slot (24), and a limiting block (28) is slidably arranged in the limiting groove (27). The limiting block (28) is connected to the card block (26), and the limiting body (22) has a second power unit (9) for driving the movement of the limiting block (28); when the card block (26) moves with the limiting block (28) and disengages from the second card slot (25), the mounting body (23) can rotate relative to the limiting body (22).

5. A tool turret for a CNC machine tool according to claim 4, characterized in that: The second power unit (9) includes a third spring (91), which is located in the limiting groove (27). The third spring (91) is located on the side of the limiting block (28) facing away from the cover plate (42). The elastic force of the third spring (91) acts on the limiting block (28), which always drives the limiting block (28) to slide closer to the cover plate (42). When the cover plate (42) is connected to the cover body (41), the limiting ring block (44) presses the locking block (26) against the second locking groove (25), thereby keeping the locking block (26) locked in the second locking groove (25).

6. A tool turret for a CNC machine tool according to claim 5, characterized in that: The mounting body (23) is detachably connected to an anti-detachment block (29). The anti-detachment block (29) is located on the side of the limiting block (28) near the cover plate (42). After the limiting ring block (44) moves away from the cover body (41) along with the cover plate (42), the third spring (91) rebounds and drives the limiting block (28) to slide, so that the limiting block (28) slides to abut against the anti-detachment block (29). At this time, the locking block (26) moves out of the second locking groove (25).

Images