A turret with an external protective cover

Abstract

The present invention provides a turret with an external protective cover, comprising a turret mounting frame, a servo motor, a turret turntable and a tool holder, wherein the servo motor is fixedly arranged on the turret mounting frame, the turret turntable is arranged on the output shaft of the servo motor, the tool holder is arranged on the turret turntable in a ring array, the tool holder comprises a rotating tool holder and a sliding tool holder, a turret outer cover is also fixedly arranged on the turret mounting frame, a push rod assembly for driving the sliding tool holder to extend and retract is also fixedly arranged on the turret mounting frame, a transmission assembly is also fixedly arranged in the turret turntable, and the transmission assembly is used to provide rotational power to the rotating tool holder, the turret outer cover is arranged and the turret turntable is arranged in the turret outer cover, so that the tool is hidden, and the tool is pushed out by the push rod assembly, so that the tool can be extended alone to process the workpiece, thereby protecting the tool and the operator under the condition of ensuring that the tool processing does not interfere.

Description

Technical Field

[0001] The invention relates to a turret, in particular to a turret with an external protective cover. Background Art

[0002] The CNC lathe turret is an important and core accessory on the CNC lathe. Its main functions and roles include fixing and converting tools, transmitting processing power, and ensuring processing accuracy and efficiency. The CNC lathe turret is generally composed of the turret body, tool holder and other parts, and the tool can be installed on the tool holder.

[0003] At present, a Chinese patent with announcement number CN218252949U discloses a turret, including a turret housing and a cutter disc, and also including a motor and a motor shaft. The motor is arranged outside the turret, the motor shaft is arranged at the output end of the motor, and the top end of the motor shaft is fixed to the cutter disc and drives the cutter disc to rotate.

[0004] The above patent still has shortcomings. Usually, the tool is directly installed on the tool holder of the turret and exposed to the outside, so as to facilitate the replacement of the tool. However, the tool is usually sharp. When using a CNC lathe to process samples of some complex parts, the operator usually needs to stop the machine and manually measure the sample size. When measuring on a lathe with exposed tools, the operator needs to be careful to avoid the tool position, which can easily cause scratches during measurement. At the same time, when a program error causes the lathe to collide with the tool, the exposed tool can easily damage multiple tools and cause the turret itself to receive a greater impact. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a turret with an external protective cover, which has the function of wrapping the turret and the tool.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a turret with an external protective cover, comprising a turret mounting frame, a servo motor, a turret turntable and a tool holder, the servo motor is fixedly arranged on the turret mounting frame, the turret turntable is arranged on the output shaft of the servo motor, the tool holder is arranged on the turret turntable in a ring array, the tool holder comprises a rotating tool holder and a sliding tool holder, the turret mounting frame is also fixedly provided with a turret outer cover, a rotating cavity is provided in the turret outer cover, the turret turntable is arranged in the rotating cavity, an X-axis machining groove and a Z-axis machining groove are provided at the side end of the turret outer cover, the tool in the sliding tool holder faces the X-axis machining groove, the tool in the rotating tool holder faces the Z-axis machining groove, the sliding tool holder and the turret turntable are in sliding cooperation, a push rod assembly for driving the sliding tool holder to extend and retract is also fixedly arranged on the turret mounting frame, a transmission assembly is also provided in the turret turntable, and the transmission assembly is used to provide rotational power to the rotating tool holder.

[0007] Through the above-mentioned technical means, by setting a turret cover and setting the turret turntable inside the turret cover, the tool is hidden, and by setting an X-axis processing slot and a Z-axis processing slot and pushing the tool out through the push rod assembly, the tool can be extended independently and process the workpiece, thereby protecting the tool and the operator while ensuring that the tool processing does not interfere.

[0008] Preferably, the turret turntable is respectively provided with an X-axis station and a Z-axis station, the sliding tool holder and the rotating tool holder are arranged on the X-axis station and the Z-axis station, the X-axis station is provided with a T-shaped slide groove, a front baffle plate and a rear baffle plate, the bottom of the sliding tool holder is provided with a T-shaped slider, and the push rod assembly drives the T-shaped slider to slide in the T-shaped slide groove.

[0009] Through the above technical means, the movement accuracy of the sliding tool holder is increased through the cooperation between the T-shaped slider and the T-shaped slide groove, while ensuring that the sliding tool holder will not separate from the turret turntable.

[0010] Preferably, the push rod assembly includes a linear cylinder, a push-pull shaft and a butt head, the linear cylinder is arranged on a turret mounting frame, the push-pull shaft is arranged at the output end of the linear cylinder, the butt head is arranged at the top end of the push-pull shaft and extends into the turret outer cover, the butt head is square and has a telescopic slot, a pair of wedge-shaped blocks are arranged in the telescopic slot, a spring is arranged between the two wedge-shaped blocks, a barb slot cooperating with the wedge-shaped block is arranged at the tail end of the sliding tool holder, the butt head is fixed to the sliding tool holder when the wedge-shaped block is inserted into the barb slot, and a decoupling component for driving the wedge-shaped block to disengage from the barb slot is also arranged in the push-pull shaft.

[0011] Through the above-mentioned technical means, the push-pull shaft is driven to move by the linear cylinder, and the sliding tool holder is pressed against the front baffle to ensure the fixed stability of the sliding tool holder. Through the cooperation between the wedge-shaped block and the barb groove, when the tool needs to be retracted for tool change, the sliding tool holder can be driven to retract by the linear cylinder, and the wedge-shaped block can be retracted through the unhooking component to completely detach the butt head from the barb groove.

[0012] Preferably, the unhooking assembly includes a negative pressure chamber opened in the abutment head, a piston head one is provided at the end of the push-pull shaft and is slidably set in the negative pressure chamber, a piston head two is provided at the tail of the wedge-shaped block, the negative pressure chamber is connected with the telescopic groove, a limiting hole is also provided at the tail of the abutment head, a limiting groove is provided at the side end of the push-pull shaft, a limiting column is provided in the limiting hole and slides on the limiting groove.

[0013] Through the above-mentioned technical means, through the cooperation between the piston head 1 and the negative pressure chamber, when the sliding tool holder is against the rear baffle, the head cannot continue to move outward. At this time, the push-pull shaft continues to move, so that the piston head 1 and the negative pressure chamber generate negative pressure, thereby retracting the wedge-shaped block, thereby completing the continued recovery of the head and preparing for the replacement of the tool.

[0014] Preferably, a pressure buffer ring is further provided in the turret outer cover, a pressure buffer ring is provided with a pressure relief chamber and is arranged on the outside of the push-pull shaft, a piston head three is further provided at the tail of the abutment head, the piston head three is slidingly connected to the pressure relief chamber, and a venting channel is also provided in the push-pull shaft.

[0015] Through the above-mentioned technical means, by setting a pressure buffer ring and setting a piston head three at the tail of the abutment head, when the sliding tool holder gradually moves toward the rear baffle, the piston head three is inserted into the pressure relief chamber and the pressure in the pressure relief chamber is gradually increased. The pressure in the pressure relief chamber forms a resistance with the pressure in the negative pressure chamber, thereby reducing the influence of the pressure in the pressure relief chamber on the wedge-shaped block and slowing down the wear of the wedge-shaped block.

[0016] Preferably, a connecting sleeve and external teeth are provided at the tail of the turret turntable, and the transmission assembly includes a high-speed motor and a power rod core. The power rod core is arranged in the middle of the connecting sleeve and fixed to the output end of the high-speed motor, the connecting sleeve is arranged between the turret turntable and the turret mounting frame and cooperates with the rotation of the turret turntable, the external teeth are fixed on the turret turntable, and the output end of the servo motor is provided with gear one, and the gear one is meshed with the external teeth.

[0017] Through the above technical means, through the cooperation between the external teeth and the gear one, it is ensured that the high-speed motor drives the power rod core to rotate while the servo motor can also drive the turret turntable to rotate.

[0018] Preferably, the power rod core rotates in the connecting sleeve column, and a gear 2 is arranged at its end. A gear 3 is also vertically arranged in the middle of the turret turntable. Gears 2 and 3 are both provided with helical teeth and mesh with each other. A through hole is also provided in the turret turntable. Gear 3 is connected to a flat card slot, and a flat card block is provided at the tail of the rotating tool holder. Gear 3 drives the tool in the rotating tool holder to rotate.

[0019] Through the above technical means, the rotation direction is changed by the cooperation between gear two and gear three, and the slot can be matched with multiple rotating tool holders by opening a through hole and making the slot match the slot block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 It is a partial schematic diagram of an embodiment;

[0022] Figure 3 A partial cross-sectional view of an embodiment Figure 1 ;

[0023] Figure 4A partial cross-sectional view of an embodiment Figure 2 ;

[0024] Figure 5 It is a structural schematic diagram of the push rod assembly in the extended state;

[0025] Figure 6 The structure diagram of the push rod assembly in the retracted state Figure 1 ;

[0026] Figure 7 The structure diagram of the push rod assembly in the retracted state Figure 2 ;

[0027] Figure 8 A partial schematic diagram of the transmission assembly.

[0028] Figure numerals: 1, turret mounting frame; 2, servo motor; 3, turret turntable; 4, tool holder; 5, rotating tool holder; 6, sliding tool holder; 7, turret cover; 8, rotating chamber; 9, X-axis processing groove; 10, Z-axis processing groove; 11, push rod assembly; 12, transmission assembly; 13, X-axis station; 14, Z-axis station; 15, T-shaped slide; 16, front baffle; 17, rear baffle; 18, T-shaped slide block; 19, linear cylinder; 20, push-pull shaft; 21, butt; 22, telescopic slot; 23, wedge-shaped block; 24 , spring; 25, barb groove; 26, unhooking assembly; 27, negative pressure chamber; 28, piston head one; 29, piston head two; 30, limiting hole; 31, limiting slide groove; 32, limiting column; 33, pressure buffer ring; 34, pressure relief chamber; 36, piston head three; 37, venting flow channel; 38, connecting sleeve column; 39, external teeth; 40, high-speed motor; 41, power rod core; 42, gear one; 43, gear two; 44, gear three; 45, through hole; 46, straight card block; 47, straight card slot; 48, transmission rod. DETAILED DESCRIPTION

[0029] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0030] A turret with an external protective cover, such as Figure 1 , Figure 2As shown, it includes a turret mounting frame 1, a servo motor 2, a turret turntable 3 and a tool holder 4. The tool holder 4 mounting tower is installed on the XZ axis support plate of the CNC lathe. The servo motor 2 is fixedly arranged on the turret mounting frame 1. The turret turntable 3 is arranged on the output shaft of the servo motor 2. The tool holder 4 is arranged on the turret turntable 3 in a ring array. The tool holder 4 includes a rotating tool holder 5 and a sliding tool holder 6. The rotating tool holder 5 and the sliding tool holder 6 are both used to install processing tools. The rotating tool holder 5 is usually used to install drill bits and milling cutters. The sliding tool holder 6 is usually used to install turning tools. The turret mounting frame 1 is also fixedly provided with a turret cover 7. The turret cover 7 has a The turret turntable 3 is arranged in the rotating cavity 8, and the side end of the turret cover 7 is provided with an X-axis processing groove 9 and a Z-axis processing groove 10, which are respectively arranged at the side end and the front end of the turret cover 7. The tool in the sliding tool holder 6 faces the X-axis processing groove 9 and extends from there, and the tool in the rotating tool holder 5 faces the Z-axis processing groove 10 and extends from there. The sliding tool holder 6 and the turret turntable 3 are in sliding cooperation, and a push rod assembly 11 for driving the sliding tool holder 6 to extend and retract is also fixedly arranged on the turret mounting frame 1. A transmission assembly 12 is also arranged in the turret turntable 3, and the transmission assembly 12 is used to provide rotational power to the rotating tool holder 5.

[0031] like Figure 3 , Figure 4 As shown, twelve stations are arranged on the turret turntable 3, which are composed of an X-axis station 13 and a Z-axis station 14. The sliding tool holder 6 and the rotating tool holder 5 are respectively arranged on the X-axis station 13 and the Z-axis station 14. The X-axis station 13 is provided with a T-shaped slide groove 15, a front baffle plate 16 and a rear baffle plate 17. A T-shaped slider 18 is arranged at the bottom of the sliding tool holder 6. The push rod assembly 11 drives the T-shaped slider 18 to slide in the T-shaped slide groove 15. When a tool on a sliding tool holder 6 is needed, the sliding tool holder 6 can be pushed out along the T-shaped slide groove 15 by the push rod assembly 11. When a tool on a rotating tool holder 5 is needed, the rotating tool holder 5 can be directly rotated to the Z-axis processing groove 10 to expose it, so that the tool can be extended alone to process the workpiece, and the tool and the operator are protected under the condition of ensuring that the tool processing does not interfere.

[0032] like Figure 4 , Figure 5As shown, the push rod assembly 11 includes a linear cylinder 19, a push-pull shaft 20 and a butt 21. The linear cylinder 19 is arranged on the turret mounting frame 1, the push-pull shaft 20 is arranged at the output end of the linear cylinder 19, the front end of the push-pull shaft 20 extends into the turret outer cover 7, and the butt 21 is arranged at the top of the push-pull shaft 20. The butt 21 is square and has a telescopic groove 22 in the vertical direction. A pair of wedge-shaped blocks 23 are arranged in the telescopic groove 22. The two wedge-shaped blocks 23 are arranged between A spring 24 is arranged in between, and the spring 24 pushes the wedge-shaped block 23 out of the telescopic slot 22. A hook groove 25 cooperating with the wedge-shaped block 23 is provided at the tail end of the sliding tool holder 6. When the linear cylinder 19 drives the push-pull shaft 20 to move toward the sliding tool holder 6 and supports its movement, the wedge-shaped block 23 is inserted into the hook groove 25, and the butt 21 is fixed to the sliding tool holder 6. A disengaging component 26 for driving the wedge-shaped block 23 to disengage from the hook groove 25 is also arranged in the push-pull shaft 20.

[0033] The push-pull shaft 20 is driven to move by the linear cylinder 19, so that the sliding tool holder 6 is pressed against the front baffle 16, ensuring that the tool on the sliding tool holder 6 is not prone to shaking during processing, thereby improving the processing stability of the tool. Through the cooperation between the wedge-shaped block 23 and the barb groove 25, when the tool needs to be retracted for tool change, the sliding tool holder 6 can be driven to retract by the linear cylinder 19, and the wedge-shaped block 23 can be retracted through the unhooking component 26 to make the butt head 21 completely disengage from the barb groove 25.

[0034] like Figure 5 , Figure 6 , Figure 7 As shown, the unhooking assembly 26 includes a negative pressure chamber 27 opened in the butt head 21, a piston head 1 28 is provided at the end of the push-pull shaft 20 and is slidably set in the negative pressure chamber 27, a piston head 29 is provided at the tail of the wedge-shaped block 23, the negative pressure chamber 27 is connected with the telescopic groove 22, a limiting hole 30 is also provided at the tail of the butt head 21, a limiting groove 31 is provided at the side end of the push-pull shaft 20, a limiting column 32 is provided in the limiting hole 30 and slides on the limiting groove 31, when the sliding tool holder 6 is against the rear baffle 17, the butt head 21 cannot continue to move outward due to the clamping connection between the wedge-shaped block 23 and the hook groove 25, and the linear cylinder 19 continues to retract. Figure 6 As shown, the push-pull shaft 20 continues to move, causing negative pressure to be generated in the negative pressure chamber 27, and generating a certain suction force on the wedge-shaped block 23 to retract it. When the wedge-shaped block 23 retracts, the abutment 21 is disengaged from the sliding tool holder 6, thereby completing the continued recovery of the abutment 21, making way for the rotation of the turret turntable 3, and preparing for the replacement of the tool.

[0035] like Figure 6 , Figure 7As shown, a pressure buffer ring 33 is further provided in the turret cover 7, a pressure buffer ring 33 is provided with a pressure relief chamber 34 and is arranged outside the push-pull shaft 20, a piston head 36 is further provided at the tail of the abutment head 21, the piston head 36 is slidably connected with the pressure relief chamber 34, and a venting flow channel 37 is further provided in the push-pull shaft 20. When the sliding tool holder 6 abuts against the rear baffle 17, the pulling shaft continues to move, which will apply a certain pulling force to the wedge-shaped block 23, which may cause the wedge-shaped block 23 to be unable to retract due to friction, and even if it is retracted, a certain amount of wear will occur. The pressure relief chamber 34 is provided so that the pressure in the pressure relief chamber 34 is counteracted by the pressure in the negative pressure chamber 27. That is, when the abutment 21 moves toward the rear baffle 17, the piston head 36 is inserted into the pressure relief chamber 34, so that the pressure in the pressure relief chamber 34 on the piston head 36 and the pulling force in the negative pressure chamber 27 on the abutment 21 are counteracted, thereby reducing the pressure between the wedge-shaped block 23 and the barb groove 25, and reducing the wear of the wedge-shaped block 23. When the venting channel 37 connects the pressure relief chamber 34 with the outside world, the pressure in the pressure relief chamber 34 against the abutment 21 disappears.

[0036] like Figure 3 , Figure 8 As shown, a connecting sleeve 38 and external teeth 39 are provided at the tail of the turret turntable 3, and the transmission assembly 12 includes a high-speed motor 40 and a power rod core 41. The power rod core 41 is arranged in the middle of the connecting sleeve 38 and is fixed to the output end of the high-speed motor 40. The connecting sleeve 38 is arranged between the turret turntable 3 and the turret mounting frame 1 and is rotated with the turret turntable 3. The external teeth 39 are fixed on the turret turntable 3. A gear 1 42 is provided at the output end of the servo motor 2, and the gear 1 42 is meshed with the external teeth 39. Through the cooperation between the external teeth 39 and the gear 1 42, it is ensured that while the high-speed motor 40 drives the power rod core 41 to rotate, the servo motor 2 can also drive the turret turntable 3 to rotate.

[0037] The power rod core 41 rotates in the connecting sleeve column 38, and a gear 2 43 is arranged at the end thereof away from the high-speed motor 40. A gear 3 44 is also vertically arranged in the middle of the turret turntable 3. The gear 2 43 and the gear 3 44 are both provided with helical teeth and mesh with each other, thereby changing the transmission direction. A through hole 45 is also arranged in the turret turntable 3. When the rotating tool holder 5 is installed, its tail passes through the through hole 45. A rotating rod is connected to the gear 3 44, and a slot 47 is provided on the transmission rod 48. The rotating A straight-line card block 46 is provided at the tail of the tool holder 5. When the straight-line card block 46 is inserted into the straight-line card slot 47, the height motor drives the gear 2 43 and the gear 3 44 to rotate, which will drive the tool in the rotating tool holder 5 to rotate. When the turret turntable 3 needs to be rotated, the straight-line card block 46 needs to be rotated to the initial point. At this time, the rotation of the turret turntable 3 will drive the rotating tool holder 5 to rotate. The straight-line card slot 47 can be directly detached from the straight-line card block 46 and inserted into the straight-line card slot 47 at the bottom of other rotating tool holders 5.

[0038] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A turret with an external protective cover, comprising a turret mounting frame (1), a servo motor (2), a turret turntable (3) and a tool holder (4), wherein the servo motor (2) is fixedly mounted on the turret mounting frame (1), the turret turntable (3) is arranged on the output shaft of the servo motor (2), and the tool holder (4) is arranged on the turret turntable (3) in a ring array, wherein: The tool holder (4) comprises a rotating tool holder (5) and a sliding tool holder (6); a turret outer cover (7) is fixedly arranged on the turret mounting frame (1); a rotating chamber (8) is provided in the turret outer cover (7); the turret turntable (3) is arranged in the rotating chamber (8); an X-axis machining groove (9) and a Z-axis machining groove (10) are provided at the side end of the turret outer cover (7); the tool in the sliding tool holder (6) faces the X-axis machining groove (9); the tool in the rotating tool holder (5) faces the Z-axis machining groove (10); the sliding tool holder (6) and the turret turntable (3) are in sliding cooperation; a push rod assembly (11) for driving the sliding tool holder (6) to extend and retract is fixedly arranged on the turret mounting frame (1); a transmission assembly (12) is also provided in the turret turntable (3); the transmission assembly (12) is used to provide rotational power to the rotating tool holder (5); The turret turntable (3) is provided with an X-axis station (13) and a Z-axis station (14); the sliding tool holder (6) and the rotating tool holder (5) are respectively provided on the X-axis station (13) and the Z-axis station (14); the X-axis station (13) is provided with a T-shaped slide groove (15), a front baffle plate (16) and a rear baffle plate (17); a T-shaped slider (18) is provided at the bottom of the sliding tool holder (6); and the push rod assembly (11) drives the T-shaped slider (18) to slide in the T-shaped slide groove (15); The push rod assembly (11) comprises a linear oil cylinder (19), a push-pull shaft (20) and a butt head (21); the linear oil cylinder (19) is arranged on a turret mounting frame (1); the push-pull shaft (20) is arranged at the output end of the linear oil cylinder (19); the butt head (21) is arranged at the top end of the push-pull shaft (20) and extends into the turret outer cover (7); the butt head (21) is square and has a telescopic slot (22); a telescopic slot (22) is provided inside the butt head (21); A pair of wedge-shaped blocks (23) are arranged, a spring (24) is arranged between the two wedge-shaped blocks (23), a barb groove (25) cooperating with the wedge-shaped blocks (23) is opened at the tail of the sliding tool holder (6), when the wedge-shaped blocks (23) are inserted into the barb groove (25), the abutment head (21) is fixed to the sliding tool holder (6), and a disengaging component (26) for driving the wedge-shaped blocks (23) to disengage from the barb groove (25) is also arranged in the push-pull shaft (20).

2. The turret with an external protective cover according to claim 1, characterized in that: The decoupling assembly (26) includes a negative pressure chamber (27) provided in the abutment head (21); a piston head 1 (28) is provided at the end of the push-pull shaft (20) and is slidably provided in the negative pressure chamber (27); a piston head 2 (29) is provided at the tail of the wedge-shaped block (23); the negative pressure chamber (27) is connected to the telescopic groove (22); a limiting hole (30) is also provided at the tail of the abutment head (21); a limiting groove (31) is provided at the side end of the push-pull shaft (20); a limiting column (32) is provided in the limiting hole (30) and slides on the limiting groove (31).

3. The turret with an external protective cover according to claim 2, characterized in that: A pressure buffer ring (33) is also provided in the turret outer cover (7), a pressure buffer chamber (34) is provided in the pressure buffer ring (33) and is arranged outside the push-pull shaft (20), a piston head three (36) is also provided at the tail of the abutment head (21), the piston head three (36) is slidably connected to the pressure buffer chamber (34), and a venting channel (37) is also provided in the push-pull shaft (20).

4. The turret with an external protective cover according to claim 1, characterized in that: A connecting sleeve (38) and external teeth (39) are arranged at the tail of the turret turntable (3); the transmission assembly (12) comprises a high-speed motor (40) and a power rod core (41); the power rod core (41) is arranged in the middle of the connecting sleeve (38) and is fixed to the output end of the high-speed motor (40); the connecting sleeve (38) is arranged between the turret turntable (3) and the turret mounting frame (1) and is rotatably matched with the turret turntable (3); the external teeth (39) are fixed on the turret turntable (3); and a gear 1 (42) is arranged at the output end of the servo motor (2); the gear 1 (42) is meshed with the external teeth (39).

5. The turret with an external protective cover according to claim 4, characterized in that: The power rod core (41) rotates in the connecting sleeve column (38), and a second gear (43) is arranged at the end thereof. A third gear (44) is vertically arranged in the middle of the turret turntable (3). The second gear (43) and the third gear (44) are both provided with helical teeth and mesh with each other. A through hole (45) is also provided in the turret turntable (3). A straight-line card slot (47) is connected to the third gear (44). A straight-line card block (46) is provided at the tail of the rotating tool holder (5). The third gear (44) drives the tool in the rotating tool holder (5) to rotate.

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