Numerical control power turret for a lathe

Abstract

This invention relates to a CNC lathe power turret, comprising a base, a mounting seat rotatably mounted on the base, a lathe tool mounted on the end of the mounting seat, a mounting platform on the base extending into the mounting seat, and a gear one mounted on the mounting platform; a first mounting rod rotatably connected within the mounting seat, with a gear two mounted on the first mounting rod, the gear two meshing with the gear one; a first power mechanism within the mounting seat for driving the gear two to rotate; a receiving hole within the first mounting rod, with a limit rod slidably mounted within the receiving hole, the bottom end of the limit rod extending out of the mounting seat; and multiple limit holes circumferentially distributed on the base for the limit rod to be inserted. This invention features a simple rotary structure, high integration, and small footprint.

Description

Technical Field

[0001] This invention relates to the field of tool turrets, and particularly to a power tool turret for CNC lathes. Background Technology

[0002] Lathes are the mother machines of industry. With the revitalization and development of the national equipment manufacturing industry, lathes have also been fully developed into CNC machines. When machining complex workpieces on a lathe, it is necessary for the tool turret to have a rotation function so that the tool can adjust the feed angle to adapt to the machining requirements of the workpiece.

[0003] The rotational positioning accuracy and rigidity of the turret directly affect the machining quality; the turret structure of traditional CNC lathes is complex and occupies a large space. Summary of the Invention

[0004] This application provides a CNC lathe power turret, which features a simple rotary structure, high integration, and small footprint.

[0005] The CNC lathe power turret provided in this application adopts the following technical solution: A CNC lathe power turret includes a base, a mounting seat rotatably mounted on the base, and a lathe tool mounted on the end of the mounting seat. The base is provided with a mounting platform that extends into the mounting seat. A gear is provided on the mounting platform, and the axis of the gear coincides with the rotation axis of the mounting seat. A first mounting rod is rotatably connected inside the mounting base. A second gear is provided on the first mounting rod. The second gear meshes with the first gear. A first power mechanism is provided inside the mounting base. The first power mechanism is used to drive the second gear to rotate. When the second gear rotates, it drives the mounting base to rotate. The first mounting rod has a receiving hole, and a limiting rod is slidably arranged in the receiving hole along the axial direction of the first mounting rod. The bottom end of the limiting rod extends out of the mounting base. The base has a plurality of limiting holes distributed circumferentially for the insertion of the limiting rod. When the limiting rod is inserted into the limiting hole, it restricts the rotation of the mounting base relative to the base. A spring is provided inside the receiving hole, and a mating block is provided at the top of the limiting rod. The spring is located on the side of the mating block near the base. The elastic force of the spring acts on the mating block, causing the limiting rod to tend to retract upward. Under normal conditions, the bottom end of the limiting rod is located inside the mounting base. A pressing part is slidably disposed inside the mounting base along the axial direction of the first mounting rod. The pressing part is located above the limiting rod. When the pressing part moves down, it presses the limiting rod and drives the limiting rod to move toward the base. A second power mechanism is provided inside the mounting base, which is used to drive the pressing part to move.

[0006] By adopting the above technical solution, when the feed angle of the cutting tool needs to be adjusted, the first power mechanism first drives the second gear to rotate, so that the second gear rotates a predetermined number of times, causing the mounting base to rotate by a predetermined angle, thereby changing the angle of the cutting tool. After the mounting base rotates, the limiting rod will align with a certain limiting hole. Then, the second power mechanism drives the pressing part to move downward, so that the mounting part presses the limiting rod, driving the limiting rod towards the base, and finally allowing the bottom end of the limiting rod to insert into the corresponding limiting rod, restricting the rotation of the mounting base and the base, and preventing the mounting base from rotating when the cutting tool is machining the workpiece.

[0007] Preferably, the first power mechanism includes a servo motor disposed in the mounting base and a third gear disposed on the rotating shaft of the servo motor, wherein the third gear meshes with the second gear.

[0008] By adopting the above technical solution, when the servo motor rotates, it will drive gear three to rotate, and when gear three rotates, it will drive gear two to rotate.

[0009] Preferably, the second power mechanism includes a reciprocating lead screw rotatably disposed in the mounting base and a power component for driving the reciprocating lead screw to rotate, wherein the pressing part is threadedly connected to the reciprocating lead screw.

[0010] By adopting the above technical solution, when the power component drives the reciprocating screw, the reciprocating screw drives the pressing part to move up and down, thereby controlling whether the pressing part presses the limit rod.

[0011] Preferably, the mounting base is provided with guide rods, and the two guide rods are located on both sides of the reciprocating lead screw; the pressing part includes a slider slidably disposed on the two guide rods and a pressure rod disposed on the slider. The slider is threadedly connected to the reciprocating lead screw, and the pressure rod is located above the limiting rod. When the slider drives the pressure rod to move down, the pressure rod presses the limiting rod, driving the limiting rod to move towards the base.

[0012] By adopting the above technical solution, the reciprocating screw drives the slider to slide when it rotates, and the slider drives the pressure rod to slide when it slides.

[0013] Preferably, the servo motor shaft is fitted with a first one-way bearing and a second one-way bearing, and the gear three is fitted on the outer ring of the first one-way bearing; the power assembly includes a gear four fitted on a reciprocating lead screw and a gear five fitted on the outer ring of the second one-way bearing, the gear four and gear five meshing; when the servo motor shaft rotates forward, it drives the gear three to rotate through the first one-way bearing; when the servo motor shaft rotates in reverse, it drives the gear five to rotate through the second one-way bearing.

[0014] By adopting the above technical solution, when the servo motor rotates forward, it drives gear three to rotate. When gear three rotates, it drives gear two to rotate, causing the mounting base to rotate. After the mounting base rotates to a predetermined angle, the servo motor reverses, driving the reciprocating screw through the second one-way bearing and gears five and four, thereby driving the pressing part to press down the limit rod for locking.

[0015] Preferably, a first bearing is sleeved on the first mounting rod, and multiple connecting rods are provided on the outer ring of the first bearing, all of which are connected to the inner sidewall of the mounting base.

[0016] By adopting the above technical solution, the connection rigidity between the first mounting rod and the mounting base is enhanced, so that when the second gear rotates, it can more stably drive the mounting base to rotate synchronously through the first mounting rod.

[0017] The main technical effects of this invention are reflected in the following aspects: 1. When the servo motor of this invention rotates forward, it drives gear three to rotate. When gear three rotates, it drives gear two to rotate, causing the mounting base to rotate. After the mounting base rotates by a predetermined angle, the servo motor reverses and drives the reciprocating lead screw through the second one-way bearing and gears five and four, thereby driving the pressing part to press down the limit rod for locking. 2. The invention provides multiple connecting rods to enhance the connection rigidity between the first mounting rod and the mounting base, so that when the gear two rotates, it can more stably drive the mounting base to rotate synchronously through the first mounting rod. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the power turret of this application.

[0019] Figure 2 yes Figure 1 A partial sectional view of the medium-powered turret along line AA.

[0020] Figure 3 This is a schematic diagram of the base structure.

[0021] Figure 4 yes Figure 2 A magnified view of a section at point B.

[0022] Figure 5 yes Figure 1 A partial cross-sectional view of the mounting base.

[0023] Reference numerals: 1. Base; 11. Mounting platform; 12. Gear 1; 13. Limiting hole; 2. Mounting seat; 21. Lathe tool; 22. First mounting rod; 23. Receiving hole; 24. Limiting rod; 25. Spring; 26. Mating block; 27. Guide rod; 28. Gear 2; 3. First power mechanism; 31. Servo motor; 32. Gear 3; 4. Pressing part; 41. Slider; 42. Pressure rod; 5. Second power mechanism; 51. Reciprocating lead screw; 52. Power assembly; 521. Gear 4; 522. Gear 5; 61. First one-way bearing; 62. Second one-way bearing; 71. First bearing; 72. Connecting rod. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-3 This embodiment of a CNC lathe power turret includes a base 1, a mounting seat 2 rotatably mounted on the base 1, and a lathe tool 21 mounted on the end of the mounting seat 2. The base 1 is provided with a mounting platform 11, which extends into the mounting seat 2. The mounting platform 11 is provided with a gear 12, the axis of which coincides with the rotation axis of the mounting seat 2.

[0026] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 A first mounting rod 22 is rotatably connected inside the mounting base 2, and the axis of the first mounting rod 22 is parallel to the axis of gear 12. A second gear 28 is mounted on the first mounting rod 22, and gear 28 meshes with gear 12. A first power mechanism 3 is provided inside the mounting base 2 to drive gear 28 to rotate, which in turn drives the mounting base 2 to rotate. To enhance the connection rigidity between the first mounting rod 22 and the mounting base 2, a first bearing 71 is sleeved on the first mounting rod 22. Two connecting rods 72 are provided on the outer ring of the first bearing 71, and both connecting rods 72 are connected to the inner sidewall of the mounting base 2.

[0027] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5The first power mechanism 3 includes a servo motor 31 and a gear 32 housed within the mounting base 2. A first one-way bearing 61 is mounted on the shaft of the servo motor 31, and the gear 32 is mounted on the outer ring of the first one-way bearing 61, meshing with a gear 28. When the servo motor 31 rotates forward, it drives the gear 32 to rotate via the first one-way bearing 61. When the gear 32 rotates, it drives the gear 28 to rotate. When the gear 28 rotates, it rotates around the gear 12 and drives the mounting base 2 to rotate, thereby changing the angle of the cutting tool 21 and adjusting the feed angle of the cutting tool 21.

[0028] Reference Figures 1-5 The first mounting rod 22 has a receiving hole 23. A limiting rod 24 is slidably arranged in the receiving hole 23 along the axial direction of the first mounting rod 22. The bottom end of the limiting rod 24 extends out of the mounting base 2. The base 1 has eight limiting holes 13 equidistantly distributed around the circumference for the insertion of the limiting rod 24. When the limiting rod 24 is inserted into the limiting hole 13, it restricts the rotation of the mounting base 2 relative to the base 1.

[0029] Reference Figure 2 and Figure 4 A spring 25 is installed inside the receiving hole 23. A mating block 26 is integrally formed at the top of the limiting rod 24. The spring 25 is located on the side of the mating block 26 near the base 1 and is sleeved on the limiting rod 24. The elastic force of the spring 25 acts on the mating block 26, causing the limiting rod 24 to tend to retract upward. Under normal conditions, the bottom end of the limiting rod 24 is located inside the mounting base 2.

[0030] Reference Figure 2 , Figure 4 and Figure 5 The mounting base 2 is provided with guide rods 27, and a pressing part 4 is slidably disposed on the guide rods 27 along the axial direction of the first mounting rod 22. The pressing part 4 includes a slider 41 slidably disposed on the two guide rods 27 and a pressure rod 42 disposed on the slider 41. The pressure rod 42 is located above the limiting rod 24. When the slider 41 drives the pressure rod 42 to move downward, the pressure rod 42 presses the limiting rod 24, driving the limiting rod 24 to move towards the base 1.

[0031] Reference Figure 2 , Figure 4 and Figure 5 The mounting base 2 is equipped with a second power mechanism 5, which drives the pressing part 4 to move. The second power mechanism 5 includes a reciprocating screw 51 rotatably disposed in the mounting base 2 and a power assembly 52 for driving the reciprocating screw 51 to rotate. The axis of the reciprocating screw 51 is parallel to the axis of the first mounting rod 22, and the slider 41 is threadedly connected to the reciprocating screw 51.

[0032] Reference Figure 2 , Figure 4 and Figure 5A second one-way bearing 62 is mounted on the motor shaft, positioned above the first one-way bearing 61. The second power mechanism 5 also includes a power assembly 52 for driving the reciprocating lead screw 51. The power assembly 52 includes a fourth gear 521 mounted on the reciprocating lead screw 51 and a fifth gear 522 mounted on the outer ring of the second one-way bearing 62. The fourth gear 521 and the fifth gear 522 mesh with each other. When the servo motor 31's shaft rotates in reverse, the fifth gear 522 is driven to rotate via the second one-way bearing 62, while the third gear 32 does not rotate due to the action of the first one-way bearing 61. When the servo motor 31's shaft rotates in forward direction, the third gear 32 is driven to rotate via the first one-way bearing 61, while the fifth gear 522 does not rotate due to the action of the second one-way bearing 62.

[0033] Reference Figures 1-5 The angle adjustment of the turret lathe tool 21 in this application includes the following steps: During turret initialization, the drive mounting base 2 is rotated sequentially to the target positions. Fine adjustments are made to precisely align the limit rod 24 with the corresponding limit hole 13, and the absolute position coordinate data of the servo motor 31 is recorded. This process is repeated until the absolute position coordinate data of the servo motor 31 corresponding to all eight target positions are recorded. Then, the eight coordinate data are written into the CNC system used to control the servo motor 31.

[0034] When it is necessary to switch to the target station, the CNC system reads the coordinate data of the corresponding station and controls the servo motor 31 to rotate forward a certain number of times. When the servo motor 31 rotates forward, it drives the gear 32 and the gear 28 to rotate, so that the mounting base 2 rotates, and finally the cutting tool 21 rotates to the target station, and the limit rod 24 is aligned with the limit hole 13 corresponding to the target station.

[0035] Then, the CNC system controls the servo motor 31 to reverse, causing gear 522 to rotate. The rotation of gear 522 drives gear 421 and the reciprocating screw 51 to rotate. The rotation of the reciprocating screw 51 drives the slider 41 and the pressure rod 42 to move downward. The pressure rod 42 moves downward and presses the limiting rod 24, causing the limiting rod 24 and the mating block 26 to move downward. Finally, the slider 41 and the pressure rod 42 move downward to the lowest position, and at the same time, the limiting rod 24 inserts into the limiting hole 13. When the mating block 26 moves downward, it presses the spring 25, causing the spring 25 to be compressed.

[0036] When the cutting tool 21 needs to be rotated to another station, the CNC system controls the servo motor 31 to reverse, causing the reciprocating screw 51 to rotate. As the reciprocating screw 51 rotates, it drives the slider 41 and pressure rod 42 to move upwards. When the pressure rod 42 moves upwards, the spring 25 rebounds, driving the mating block 26 and the limit rod 24 to move upwards, causing the limit rod 24 to retract into the mounting base 2. Finally, the limit rod 24 retracts into the mounting base 2, and the slider 41 and pressure rod 42 move to their highest positions. Then, the CNC system reads the coordinate data of the corresponding station and controls the servo motor 31 to rotate clockwise a certain number of times, causing the cutting tool 21 to rotate to the predetermined station.

[0037] 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 CNC lathe power turret, comprising a base (1), a mounting seat (2) rotatably mounted on the base (1), and a lathe tool (21) mounted on the end of the mounting seat (2), characterized in that: The base (1) is provided with a mounting platform (11), which extends into the mounting base (2). The mounting platform (11) is provided with a gear (12), and the axis of the gear (12) coincides with the rotation axis of the mounting base (2). The mounting base (2) is rotatably connected to a first mounting rod (22), and a second gear (28) is provided on the first mounting rod (22). The second gear (28) meshes with the first gear (12). The mounting base (2) is provided with a first power mechanism (3), which is used to drive the second gear (28) to rotate. When the second gear (28) rotates, it drives the mounting base (2) to rotate. The first mounting rod (22) has a receiving hole (23) and a limiting rod (24) is slidably arranged in the receiving hole (23) along the axial direction of the first mounting rod (22). The bottom end of the limiting rod (24) extends out of the mounting base (2). The base (1) has a plurality of limiting holes (13) distributed circumferentially for the insertion of the limiting rod (24). When the limiting rod (24) is inserted into the limiting hole (13), it restricts the rotation of the mounting base (2) relative to the base (1). A spring (25) is provided in the receiving hole (23), and a mating block (26) is provided at the top of the limiting rod (24). The spring (25) is located on the side of the mating block (26) close to the base (1). The elastic force of the spring (25) acts on the mating block (26), causing the limiting rod (24) to have an upward retraction tendency. Under normal conditions, the bottom end of the limiting rod (24) is located in the mounting base (2). A pressing part (4) is slidably provided inside the mounting base (2) along the axial direction of the first mounting rod (22). The pressing part (4) is located above the limiting rod (24). When the pressing part (4) moves down, it presses the limiting rod (24) and drives the limiting rod (24) to move toward the base (1). A second power mechanism (5) is provided inside the mounting base (2). The second power mechanism (5) is used to drive the pressing part (4) to move.

2. The CNC lathe power turret according to claim 1, characterized in that: The first power mechanism (3) includes a servo motor (31) located in the mounting base (2) and a gear three (32) located on the rotating shaft of the servo motor (31), wherein the gear three (32) meshes with the gear two (28).

3. A CNC lathe power turret according to claim 2, characterized in that: The second power mechanism (5) includes a reciprocating screw (51) rotatably disposed in the mounting base (2) and a power assembly (52) for driving the reciprocating screw (51) to rotate. The pressing part (4) is threadedly connected to the reciprocating screw (51).

4. A CNC lathe power turret according to claim 3, characterized in that: The mounting base (2) is provided with guide rods (27); the pressing part (4) includes a slider (41) slidably disposed on the two guide rods (27) and a pressure rod (42) disposed on the slider (41). The slider (41) is threadedly connected to the reciprocating screw (51). The pressure rod (42) is located above the limiting rod (24). When the slider (41) drives the pressure rod (42) to move down, the pressure rod (42) presses the limiting rod (24) and drives the limiting rod (24) to move toward the base (1).

5. A CNC lathe power turret according to claim 3, characterized in that: The servo motor (31) has a first one-way bearing (61) and a second one-way bearing (62) mounted on its shaft. The gear three (32) is mounted on the outer ring of the first one-way bearing (61). The power assembly (52) includes a gear four (521) mounted on the reciprocating screw (51) and a gear five (522) mounted on the outer ring of the second one-way bearing (62). The gear four (521) and the gear five (522) mesh with each other. When the shaft of the servo motor (31) rotates forward, it drives the gear three (32) to rotate through the first one-way bearing (61). When the shaft of the servo motor (31) rotates in reverse, it drives the gear five (522) to rotate through the second one-way bearing (62).

6. A CNC lathe power turret according to claim 1, characterized in that: The first mounting rod (22) is fitted with a first bearing (71), and the outer ring of the first bearing (71) is provided with multiple connecting rods (72), all of which are connected to the inner sidewall of the mounting base (2).

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