Turn-milling combined type numerical control machine tool

Abstract

The utility model relates to the field of numerical control machining equipment, in particular to a turning and milling combined type numerical control machine tool which comprises a machine tool body and a workpiece clamping rotary seat, the workpiece clamping rotary seat is provided with a base assembly, an indexing rotary drum assembly, a core seat, a rotary table assembly and a rotary table power assembly, and a clutch is arranged between the rotary table power assembly and the rotary table assembly. A brake is arranged on the rotary table assembly; and the indexing drum assembly is arranged above the base assembly provided with the retainer. According to the turning and milling combined type numerical control machine tool, the turning and milling combined type numerical control machine tool is improved, the rotating table assembly and the rotating table power assembly can be rapidly connected or disconnected through the clutch, and the brake is used for braking; the indexing drum assembly intermittently rotates for indexing and is stopped by the retainer, so that a workpiece can be quickly switched when the workpiece needs to rotate at a high speed during turning and does not need to rotate during milling, and the requirement of indexing according to a certain rotating angle during milling can be met, so that the working efficiency and the machining precision can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control processing equipment field, concretely relates to a turning and milling combined numerical control machine tool. BACKGROUND

[0002] The turning and milling combined numerical control machine tool is the numerical control equipment that is developed faster and is used more widely among the compound processing machine tool, and the turning and milling combination has the turning function of workpiece rotation / turning tool linear feed, and has the milling function of workpiece non-rotation and milling cutter rotation and milling cutter or workpiece linear feed. Although the cutting tools used in turning and milling are different, but the problem of different tool clamping can be solved by using interchangeable tool shanks such as BT and BBT tool shanks. However, for the problem that the workpiece needs to be rotated at high speed when turning and does not need to be rotated when milling but sometimes needs to be indexed at a certain rotation angle, the current workpiece clamping mechanism is mostly complex and high in cost, and some need to temporarily install an indexing head, which affects the work efficiency. For example, the utility model patent with the authorization announcement number CN217750339U discloses a turning and milling combined numerical control machine tool, in order to solve the problem that the workpiece needs to be rotated when turning and does not need to be rotated when milling, a vertical spindle box 11 is arranged, "... including vertical shaft 111, spindle sleeve 112, belt pulley 113… belt pulley 113 is in transmission connection with driving motor 12…"; "... when turning, vertical spindle box 11 drives the rotation of the parts… to realize the turning of the parts…"; "... when milling or drilling, vertical spindle box 11 and driving motor 12 do not work, and the parts remain stationary… to realize the milling or drilling of the parts…". Although the disclosed technology has a relatively simple structure, it only relies on the non-working of the vertical spindle box 11 and the driving motor 12 to further limit the rotation of the vertical shaft 111 without a braking mechanism, and the vertical shaft 111 will be unstable under the influence of the cutting force of milling or drilling, which will affect the machining precision and will also cause impact on the driving motor 12; in addition, it is not easy to solve the problem of indexing the workpiece sometimes in the milling process by using the vertical spindle box 11. In view of this, it is necessary to further improve the turning and milling combined numerical control machine tool, how to make the workpiece rotate at high speed when turning and not need to rotate when milling but sometimes need to be indexed at a certain rotation angle to realize quick switching and improve the work efficiency and machining precision, which is the problem to be solved in the case. CONTENT OF THE UTILITY MODEL

[0003] To overcome the shortcomings of existing technologies, this utility model discloses a milling-turning composite CNC machine tool, including a machine tool body and a workpiece clamping hub. The workpiece clamping hub is provided with a base assembly, an indexing drum assembly, a core seat, a rotary table assembly, and a rotary table power assembly. The rotary table assembly, core seat, and indexing drum assembly are arranged sequentially from top to bottom. A clutch is provided between the rotary table power assembly and the rotary table assembly. When the clutch is engaged, the rotary table power assembly can drive the rotary table assembly to rotate. A brake is provided on the rotary table assembly to limit the rotation of the rotary table assembly. The indexing drum assembly is rotatably connected above the base assembly. It can rotate intermittently for indexing and can be stopped by a stop. This invention improves upon the milling-turning composite CNC machine tool by using a clutch to quickly connect or disconnect the rotary table assembly and the rotary table power assembly, and by using a brake for braking. The indexing drum assembly is used for intermittent rotation for indexing, and a stop is used for stopping. This allows for rapid switching between high-speed rotation during turning and non-rotation during milling, and also meets the requirement of indexing at specific rotation angles in milling processes, thereby improving work efficiency and machining accuracy.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A milling-turning composite CNC machine tool includes a machine body, which comprises a frame and a main power head for clamping and rotating a cutting tool. The frame is equipped with a moving component that drives the main power head to move laterally, longitudinally, and vertically, and a rotating component that rotates along a vertical plane. The tool is characterized by further including a workpiece clamping hub, which comprises a base assembly, an indexing cylinder assembly, a core seat, a rotary table assembly, and a rotary table power assembly. The rotary table assembly, core seat, and indexing cylinder assembly are arranged sequentially from top to bottom, and the lower part of the rotary table assembly is inserted into the core seat. The core seat is located in the cavity of the core seat and is rotatably connected to the core seat. The turntable power assembly is located below the rotary table assembly and a clutch component is provided between the turntable power assembly and the rotary table assembly. When the clutch component is engaged, the turntable power assembly can drive the rotary table assembly to rotate. The rotary table assembly is provided with a braking component, which can limit the rotation of the rotary table assembly. The lower part of the core seat is inserted into the cavity of the indexing rotary cylinder assembly and is fixedly connected to the indexing rotary cylinder assembly. The indexing rotary cylinder assembly is provided with a cylindrical body that can rotate intermittently for indexing. The indexing rotary cylinder assembly is rotatably connected above the base assembly.

[0006] The base assembly includes a fixed seat and a first bearing assembly. The fixed seat is a ⊥-shaped circular seat with a through cavity in the center. The first bearing assembly is connected to the fixed seat, and the fixed seat is fixed to one side of the machine tool body.

[0007] The indexing drum assembly comprises a drum, a bevel gear, a bevel gear wheel and a first motor, the drum is a П-shaped cylindrical body, the inner cavity of which is through from top to bottom, the drum is rotatably connected to the fixed base by the first bearing set of the base assembly, the bevel gear and the bevel gear wheel are a pair of transmission pairs that can mesh with each other, the bevel gear is fixed to the outer wall of the drum, the bevel gear wheel is connected to the output shaft of the first motor, the bevel gear wheel is above the tooth surface of the bevel gear, and the first motor is fixed to the machine body of the machine tool body.

[0008] The base assembly further comprises a stopper, the stopper is vertically arranged below the bevel gear and on the side with the bevel gear wheel, the stopper can limit the rotation of the bevel gear wheel, the stopper comprises a telescopic cylinder, a pressing plate and a damping plate, the pressing plate is locked to the rod end of the telescopic cylinder, the damping plate is fixed to the top surface of the pressing plate, and the telescopic cylinder is fixed to the fixed base.

[0009] The core seat is a T-shaped circular seat body, and a stepped circular hole is arranged in the inside and is through from top to bottom.

[0010] The rotating table assembly comprises an upper rotating shaft, a table plate and a second bearing set, the upper rotating shaft is a stepped circular shaft, the table plate is fixed to the top of the vertically arranged upper rotating shaft, the second bearing set is connected to the upper rotating shaft, the upper rotating shaft is inserted into the circular hole of the core seat, and the rotating table assembly is rotatably connected to the core seat by the second bearing set.

[0011] The rotating table power assembly comprises a lower rotating shaft, a second motor and a third bearing set, the lower rotating shaft is a stepped circular shaft, the third bearing set is connected to the lower rotating shaft, the lower rotating shaft is arranged below the upper rotating shaft and is inserted into the circular hole of the core seat, the lower rotating shaft is rotatably connected to the core seat by the third bearing set, the lower end of the rotating shaft is connected to the output shaft of the second motor, and the second motor is fixed to the fixed base.

[0012] The workpiece clamping rotary seat further comprises a clutch and a brake, the two ends of the clutch are connected to the upper rotating shaft and the lower rotating shaft respectively, the brake is sleeved on the upper rotating shaft and is fixed to the core seat, and the brake can limit the rotation of the upper rotating shaft.

[0013] The workpiece clamping rotary seat further comprises a clamping disc, and the clamping disc is fixed to the table plate of the rotating table assembly.

[0014] The first bearing set, the second bearing set and the third bearing set respectively comprise a plurality of radial bearings and thrust bearings.

[0015] The clutch is preferably an electromagnetic clutch, and the brake is preferably a hydraulic brake with a multi-plate brake.

[0016] The clamping disc is a chuck provided with three claws or four claws for clamping workpieces.

[0017] The first motor and the second motor are servo motors with deceleration and braking functions, and the second motor can rotate intermittently and rotate reversely.

[0018] The telescopic cylinder is preferably an oil cylinder.

[0019] As can be seen from the above description, the turning-milling combined numerical control machine tool has the following advantages: the rotating table assembly, the core seat and the indexing drum assembly are arranged in sequence from top to bottom, the clutch is arranged between the rotating table assembly and the rotating table power assembly, and the brake is arranged on the rotating table assembly; the indexing drum assembly is rotatably connected above the base assembly and can rotate intermittently for indexing, the rotating table assembly and the rotating table power assembly can be quickly connected or disconnected by the clutch, and the brake is used for braking; the indexing drum assembly rotates intermittently for indexing and is stopped by the stopper, so that the workpiece can be quickly switched when high-speed rotation is required during turning and no rotation is required during milling, and the requirement that the workpiece needs to be indexed at a certain rotation angle during milling is met. The turning-milling combined numerical control machine tool is improved, and the operation efficiency and the machining precision are improved. The turning-milling combined numerical control machine tool is reasonable in design, simple in structure, low in cost and convenient to popularize. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a general schematic view of a turning-milling combined numerical control machine tool according to the present application;

[0021] Figure 2 Fig. 6 is an enlarged schematic view of a workpiece clamping rotary seat;

[0022] Figure 3 Fig. 7 is an enlarged schematic view of a base assembly;

[0023] Figure 4 Fig. 8 is an enlarged schematic view of a stopper;

[0024] Figure 5 Fig. 9 is an enlarged schematic view of an indexing drum assembly;

[0025] Figure 6 Fig. 10 is an enlarged schematic view of a core seat;

[0026] Figure 7 Fig. 11 is an enlarged schematic view of a rotating table assembly;

[0027] Figure 8 Fig. 12 is an enlarged schematic view of a rotating table power assembly.

[0028] REFERENCE SIGNS:

[0029] 1machine tool body; 2workpiece clamping swivel seat; 21base assembly; 211fixed seat; 212first bearing set; 213stop; 2131extension cylinder; 2132top pressing plate; 2133damping plate; 22indexing rotary drum assembly; 221drum body; 222bevel gear ring; 223bevel gear; 224first motor; 23core seat; 24rotary table assembly; 241upper rotating shaft; 242table plate; 243second bearing set; 25rotary table power assembly; 251lower rotating shaft; 252second motor; 253third bearing set; 26clutch; 27brake; 28clamping disc. DETAILED DESCRIPTION

[0030] The utility model will be further described through the specific implementation.

[0031] As Figure 1 and Figure 2 The utility model discloses a turn-milling combined numerical control machine tool, including machine tool body 1 and workpiece clamping swivel seat 2, machine tool body 1 contains the main drive head for clamping cutter and drive cutter rotation, and the main drive head is provided with the moving member of drive along the transverse, longitudinal and vertical direction movement and the rotating member along the vertical plane rotation, and the vertical plane is W face in the drawing.The workpiece clamping swivel seat 2 is equipped with base assembly 21, indexing rotary drum assembly 22, core seat 23, rotary table assembly 24, rotary table power assembly 25, clutch 26, brake 27 and clamping disc 28, and the rotary table assembly 24, core seat 23 and indexing rotary drum assembly 22 are sequentially arranged from top to bottom, the lower part of rotary table assembly 24 is inserted in the cavity of core seat 23 and is rotationally connected with core seat 23, and rotary table assembly 24 can only rotate but can not move in the transverse, longitudinal and vertical direction.The rotary table power assembly 25 is arranged below rotary table assembly 24, and the clutch 26 is arranged between rotary table power assembly 25 and rotary table assembly 24, rotary table power assembly 25 can drive rotary table assembly 24 to rotate when the clutch 26 is engaged, the rotary table assembly 24 is equipped with brake 27, which can limit the rotation of rotary table assembly 24, the lower part of core seat 23 is inserted in the cavity of indexing rotary drum assembly 22 and is fixedly connected with indexing rotary drum assembly 22, and the indexing rotary drum assembly 22 is provided with a cylindrical body that can rotate intermittently to index, and the indexing rotary drum assembly 22 is rotationally connected above base assembly 21, and the indexing rotary drum assembly 22 can only rotate but can not move in the transverse, longitudinal and vertical direction.The clamping disc 28 is a chuck provided with three claws or four claws for clamping workpieces, and the clamping disc 28 is fixedly connected on the rotary table assembly 24.

[0032] As Figures 1 to 5The base assembly 21 includes a fixed seat 211, a first bearing group 212 and a stopper 213, the fixed seat 211 is a ⊥-shaped circular seat body, the center of which is provided with an up-down through cavity, the first bearing group 212 is connected to the fixed seat 211, the first bearing group 212 includes a plurality of radial bearings and thrust bearings, and the fixed seat 211 is fixedly connected to one side of the machine body of the machine tool body 1. The indexing drum assembly 22 includes a drum body 221, a fan tooth ring 222, a bevel gear 223 and a first motor 224, the drum body 221 is a П-shaped cylindrical body, the inner cavity of which is up-down through, the drum body 221 is rotatably connected to the fixed seat 211 by the first bearing group 212 of the base assembly 21, the fan tooth ring 222 and the bevel gear 223 are a pair of transmission pairs that can be meshed with each other, the fan tooth ring 222 is fixedly connected to the outer wall of the drum body 221, the bevel gear 223 is connected to the output shaft of the first motor 224, the bevel gear 223 is arranged above the tooth surface of the fan tooth ring 222, the first motor 224 is fixedly connected to the machine body of the machine tool body 1, and the first motor 224 is a servo motor with a speed reduction and braking function. The stopper 213 is vertically arranged below the fan tooth ring 222 and on the side where the bevel gear 223 is arranged, the stopper 213 can limit the rotation of the bevel gear 223, the stopper 213 includes a telescopic cylinder 2131, a pressing plate 2132 and a damping plate 2133, the pressing plate 2132 is locked to the rod end of the telescopic cylinder 2131, the damping plate 2133 is fixedly connected to the top surface of the pressing plate 2132, and the telescopic cylinder 2131 is fixedly connected to the fixed seat 211, and the telescopic cylinder 2131 of the embodiment is an oil cylinder.

[0033] As Figures 1 to 8The utility model discloses a core seat 23 is T-shaped round seat body, its inside is equipped with the stepped round hole and is through from top to bottom. The rotating table joint 24 includes upper pivot 241, table plate 242 and second bearing group 243, and the upper pivot 241 is stepped round axle, and the table plate 242 is fixedly connected at the top of the vertical upper pivot 241, and the second bearing group 243 is connected on the upper pivot 241, and the second bearing group 243 includes several radial bearings and thrust bearings. The upper pivot 241 is inserted in the round hole of core seat 23, and the rotating table joint 24 is rotatably connected on the core seat 23 by the second bearing group 243. The rotating table power joint 25 includes lower pivot 251, second motor 252 and third bearing group 253, and the lower pivot 251 is stepped round axle, and the third bearing group 253 is connected on the lower pivot 251, and the third bearing group 253 includes several radial bearings and thrust bearings. The lower pivot 251 is placed below the upper pivot 241 and is inserted in the round hole of core seat 23, and the lower pivot 251 is rotatably connected on the core seat 23 by the third bearing group 253, and the lower end of the lower pivot 251 is connected with the output shaft of second motor 252, and the second motor 252 is fixedly connected on the fixed seat 211, and the second motor 252 is servo motor with deceleration and brake function, which can intermittently rotate and reversely rotate. The clutch 26 is connected on the upper pivot 241 and the lower pivot 251 respectively, the brake 27 is sleeved on the upper pivot 241 and is fixedly connected on the core seat 23, and the brake 27 can limit the rotation of the upper pivot 241, and the clutch 26 of the embodiment is electromagnetic clutch, and the brake 27 is hydraulic brake of multi-plate brake.

[0034] When the present turning and milling combined numerical control machine tool is used, the workpiece is first clamped on the clamping disc 28 of the workpiece clamping rotating seat 2.

[0035] If turning is needed, the turning tool is mounted on the main power head of the machine tool body 1, the first motor 224 of the indexing rotating cylinder joint 22 is not operated, the telescopic cylinder 2131 is started to limit the rotation of the cylinder body 221 by the stopper 213, the clutch 26 is engaged to connect the rotating table joint 24 and the rotating table power joint 25, and the second motor 252 of the rotating table power joint 25 is started, at this time, the rotating table power joint 25 drives the rotating table joint 24 to rotate at high speed with the workpiece, so that the turning tool does not rotate but only moves linearly to realize turning.

[0036] If milling or drilling is needed, the milling cutter or drill bit is mounted on the main power head of the machine tool body 1, the first motor 224 and the second motor 252 are not operated, the telescopic cylinder 2131 is started to limit the rotation of the cylinder body 221 by the stopper 213, the brake 27 is started to limit the rotation of the rotating table joint 24, at this time, the workpiece is not moved, and the milling cutter or drill bit rotates and moves linearly to realize milling or drilling.

[0037] If indexing is needed in the process of milling or drilling, the telescopic cylinder 2131 can be retracted, the stopper 213 is removed from the top pressure of the gear ring 222, the rotation restriction of the cylinder 221 is cancelled; the brake 27 still keeps the rotation restriction of the rotating table assembly 24, the rotating table assembly 24 cannot rotate on the core seat 23; the first motor 224 is started, the cylinder 221 is intermittently rotated at a set angle, the core seat 23 and the rotating table assembly 24 are intermittently rotated together, and the workpiece is indexed.

[0038] The utility model discloses an improvement is carried out to the turning and milling combined numerical control machine tool, the rotating table assembly 24, core seat 23 and index rotating cylinder assembly 22 are sequentially arranged from top to bottom, the clutch 26 is equipped between the rotating table power assembly 25 and the rotating table assembly 24, and the brake 27 is equipped on the rotating table assembly 24;The index rotating cylinder assembly 22 is rotatably connected above the base assembly 21 and can be intermittently rotated for indexing, the rotating table assembly 24 can be quickly connected or disconnected with the rotating table power assembly 25 by the clutch 26, and the brake 27 is utilized for braking;The index rotating cylinder assembly 22 is intermittently rotated for indexing and is stopped by the stopper 213, so that the workpiece can be quickly switched when needing high-speed rotation during turning and not needing rotation during milling, and the demand that indexing is needed according to a certain rotation angle in the milling process can be met, thereby the operation efficiency and the machining precision can be improved.

[0039] The above is only one specific embodiment of the utility model, but the design concept of the utility model does not limit to this, and any non-essential change of the utility model by using the concept should belong to the act of infringing the protection scope of the utility model.

Claims

1. A hybrid NC machine tool comprising a machine tool body (1) including a machine frame and a main power head for clamping a tool, the machine frame being provided with moving members for moving the main power head in a transverse direction, a longitudinal direction and an upright direction and a rotating member for rotating the main power head in an upright surface, characterized in that: Also include workpiece clamping swivel seat (2), the workpiece clamping swivel seat (2) is equipped with base assembly (21), index rotating drum assembly (22), core seat (23), rotating table assembly (24) and rotating table power assembly (25), rotating table assembly (24), core seat (23) and index rotating drum assembly (22) are sequentially arranged from top to bottom, the lower part of rotating table assembly (24) is inserted in the cavity provided in core seat (23) and is rotationally connected with core seat (23), rotating table power assembly (25) is arranged below rotating table assembly (24), and a clutch member is arranged between rotating table power assembly (25) and rotating table assembly (24), when the clutch member is engaged, rotating table power assembly (25) can drive rotating table assembly (24) to rotate, the rotating table assembly (24) is provided with a brake member, which can limit the rotation of the rotating table assembly (24), the lower part of the core seat (23) is inserted into the cavity provided in the index rotating drum assembly (22) and is fixedly connected with the index rotating drum assembly (22), the index rotating drum assembly (22) is provided with a cylindrical body that can rotate intermittently, and the index rotating drum assembly (22) is rotationally connected above the base assembly (21). ​ 2. The hybrid NC machine tool according to claim 1, characterized in that: The base assembly (21) includes a fixed seat (211) and a first bearing set (212), the fixed seat (211) is a ⊥-shaped circular seat body, a cavity penetrating through the upper and lower portions is arranged in the center thereof, the first bearing set (212) is connected to the fixed seat (211), and the fixed seat (211) is fixedly connected to one side of the machine body of the machine tool body (1).

3. The hybrid NC machine tool according to claim 2, characterized in that: The index rotating drum assembly (22) includes a cylindrical body (221), a cup gear ring (222), a bevel gear (223) and a first motor (224), the cylindrical body (221) is a П-shaped cylindrical body, an inner cavity penetrating through the upper and lower portions is arranged in the cylindrical body (221), the cylindrical body (221) is rotationally connected to the fixed seat (211) by the first bearing set (212) of the base assembly (21), the cup gear ring (222) and the bevel gear (223) are a pair of transmission pairs that can mesh with each other, the cup gear ring (222) is fixedly connected to the outer wall of the cylindrical body (221), the bevel gear (223) is connected to the output shaft of the first motor (224), and the bevel gear (223) is arranged above the tooth surface of the cup gear ring (222).

4. The hybrid NC machine tool according to claim 3, characterized in that: The base assembly (21) further includes a stopper (213), the stopper (213) is arranged vertically below the cup gear ring (222), the stopper (213) includes a telescopic cylinder (2131), a pressing plate (2132) and a damping plate (2133), the pressing plate (2132) is locked to the rod end of the telescopic cylinder (2131), the damping plate (2133) is fixedly connected to the top surface of the pressing plate (2132), and the telescopic cylinder (2131) is fixedly connected to the fixed seat (211).

5. A turn-mill-composite type NC machine tool according to claim 4, characterized in that: The core seat (23) is a T-shaped circular seat body, a stepped circular hole is arranged in the inside thereof and penetrates through the upper and lower portions.

6. The hybrid NC machine tool according to claim 5, wherein: The rotating table assembly (24) comprises an upper rotating shaft (241), a table plate (242) and a second bearing set (243), the upper rotating shaft (241) is a stepped circular shaft, the table plate (242) is fixed on the top of the upper rotating shaft (241), the second bearing set (243) is connected to the upper rotating shaft (241), the upper rotating shaft (241) is inserted into the circular hole of the core seat (23), and the rotating table assembly (24) is rotatably connected to the core seat (23) by the second bearing set (243).

7. The hybrid NC machine tool according to claim 6, characterized in that: The rotating table power assembly (25) comprises a lower rotating shaft (251), a second motor (252) and a third bearing set (253), the lower rotating shaft (251) is a stepped circular shaft, the third bearing set (253) is connected to the lower rotating shaft (251), the lower rotating shaft (251) is arranged below the upper rotating shaft (241) and is inserted into the circular hole of the core seat (23), the lower rotating shaft (251) is rotatably connected to the core seat (23) by the third bearing set (253), and the lower end of the lower rotating shaft (251) is connected to the output shaft of the second motor (252).

8. The hybrid NC machine tool according to claim 7, characterized in that: The workpiece clamping rotary seat (2) further comprises a clutch (26) and a brake (27), two ends of the clutch (26) are connected to the upper rotating shaft (241) and the lower rotating shaft (251) respectively, and the brake (27) is sleeved on the upper rotating shaft (241) and is fixed on the core seat (23).

9. The hybrid NC machine tool according to claim 8, characterized in that: The workpiece clamping rotary seat (2) further comprises a clamping disc (28), and the clamping disc (28) is fixed on the table plate (242) of the rotating table assembly (24).

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