High-rigidity numerical control lathe

Abstract

The utility model discloses a high-rigidity numerical control lathe which comprises a base assembly body, a saddle assembly body, a tool turret assembly body, a spindle box assembly body and a tailstock assembly body. The base assembly body is provided with a horizontal base, the horizontal base comprises a main shaft area and a saddle area which are connected front and back, the assembly surfaces of the main shaft area and the saddle area are obliquely arranged, and the inclination angle of the assembly surface of the main shaft area is larger than that of the assembly surface of the saddle area; the saddle assembly body is installed on the saddle area in a left-right moving mode, and the tool turret assembly body is installed on the saddle assembly body in a front-back inclined moving mode. The spindle box assembly body and the tailstock assembly body are arranged on the assembly face of the spindle area in a left-right distribution mode. The lathe structure is improved, the vibration resistance, the bearing capacity and the machining precision of the lathe are improved, the lathe can better deal with some special workpieces, and the machining range of the lathe is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe technical field, specifically point to a kind of high rigidity numerical control lathe. BACKGROUND

[0002] With the development of modern manufacturing, the requirement of machining precision is higher and higher. In many fields such as aerospace, automobile manufacturing, precision mold, the dimensional accuracy and surface quality of parts are required to be harsh. For example, the complex curved surface and high precision of aero-engine blade require that the machining equipment must have high rigidity to reduce vibration and deformation in the machining process and ensure machining precision.

[0003] The pursuit of processing efficiency in manufacturing industry promotes machine tools to bear higher cutting capacity and carry out high-speed and powerful cutting. Traditional horizontal numerical control lathe has defects in structure design and material performance. In terms of structure, the bed and guide rail of some old lathes are designed simply, with limited rigidity, which is difficult to bear the huge cutting force and complex working conditions in modern machining. With the development of numerical control technology, the low rigidity of traditional lathe cannot meet the requirements of high-precision complex curved surface machining and other advanced machining processes.

[0004] In view of this, the above problems are studied in depth, and a new type of frame wall structure which can effectively improve the anti-seismic performance and out-of-plane anti-collapse performance of the infilled wall is proposed. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a high rigidity numerical control lathe, improving the design of lathe structure, improving the anti-vibration performance, carrying capacity and machining precision of lathe, so that the lathe can better cope with some special workpieces and widen the machining range of lathe.

[0006] In order to achieve the above purpose, the solution of the utility model is as follows:

[0007] A high rigidity numerical control lathe, comprising a base assembly, a saddle assembly, a tool tower assembly, a spindle box assembly and a tailstock assembly; the base assembly has a horizontal base, the horizontal base comprises a main shaft area and a saddle area connected in front and back, the assembly surfaces of the main shaft area and the saddle area are both inclined, and the inclination angle of the assembly surface of the main shaft area is greater than that of the saddle area; the saddle assembly is installed on the assembly surface of the saddle area in a left-right movable manner, and the tool tower assembly is installed on the saddle assembly in a front-rear oblique movable manner; the spindle box assembly and the tailstock assembly are distributed left and right on the assembly surface of the main shaft area, the spindle box assembly is fixedly installed on the assembly surface of the main shaft area, and the tailstock assembly is installed on the assembly surface of the main shaft area in a left-right movable manner.

[0008] The inclination angle of the assembly surface of the main shaft area is 20-40 degrees, and the inclination angle of the assembly surface of the saddle area is 10-30 degrees.

[0009] The displacement linkage mechanism is arranged between the saddle assembly and the tailstock assembly, and the displacement linkage mechanism comprises a linkage slot, a linkage pin, and an oil pressure unit for driving the linkage pin.

[0010] The base assembly comprises two groups of first linear rails, a first lead screw, and a first servo motor. The two groups of first linear rails are arranged in parallel on the assembly surface of the saddle area, the first lead screw is arranged in parallel between the two groups of first linear rails, and the first lead screw is in transmission connection with the first servo motor. The saddle assembly comprises a saddle, two groups of first linear rail sliders, and a first lead screw nut. The two groups of first linear rail sliders are slidably installed on the two groups of first linear rails in one-to-one correspondence, and the first lead screw nut is assembled on the first lead screw.

[0011] The base assembly further comprises a first motor seat and a first tail end bearing seat. The first servo motor is installed on the first motor seat, and the two ends of the first lead screw are respectively installed on the first motor seat and the first tail end bearing seat.

[0012] The saddle assembly comprises two groups of second linear rails, a second lead screw, and a second servo motor. The two groups of second linear rails are arranged in parallel on the saddle, the second lead screw is arranged in parallel between the two groups of second linear rails, and the second lead screw is in transmission connection with the second servo motor. The tool turret assembly comprises a tool turret seat, a servo tool turret, two groups of second linear rail sliders, and a second lead screw nut. The two groups of second linear rail sliders are slidably installed on the two groups of second linear rails in one-to-one correspondence, and the second lead screw nut is assembled on the second lead screw.

[0013] The saddle assembly further comprises a second motor seat and a second tail end bearing seat. The second servo motor is installed on the second motor seat, and the two ends of the second lead screw are respectively installed on the second motor seat and the second tail end bearing seat.

[0014] The tool turret assembly further comprises a tool turret gasket for longitudinally adjusting the servo tool turret and a tool turret adjusting block for transversely adjusting the servo tool turret.

[0015] The spindle box assembly comprises a spindle motor, a spindle box, and a spindle assembly. The spindle motor and the spindle box are installed on the main shaft area. The spindle assembly comprises a spindle, a pull rod, a three-jaw chuck, and a rotary oil cylinder. The spindle penetrates through the spindle box. The spindle motor is in transmission connection with the spindle through a belt wheel and a belt. The pull rod penetrates through the spindle. The three-jaw chuck and the rotary oil cylinder are respectively arranged in transmission connection with the pull rod.

[0016] The main shaft box assembly further comprises an encoder assembly component, the encoder assembly component comprises an encoder gear ring, an encoder read head and an encoder read head support, the encoder gear ring is sleeved on the main shaft, the encoder read head support is installed on the main shaft box, the encoder read head is installed on the encoder read head support, and the encoder read head is arranged correspondingly with the encoder gear ring.

[0017] The tail seat assembly comprises a tail seat body, a tail seat base and a tail seat guide rail; the tail seat guide rail is locked and connected with the assembly surface of the main shaft area, the tail seat base is movably assembled on the tail seat guide rail, and the tail seat body is arranged on the tail seat base.

[0018] After the above scheme is adopted, the new type has the beneficial effects over the prior art, which are as follows:

[0019] Firstly, the horizontal lathe of the new type is arranged in a slanted bed body, and is divided into a main shaft area and a saddle area with different inclination angles, so that the center of gravity of the bed body is more reasonable, the stability during machining is better, the anti-vibration performance and the carrying capacity of the machine tool during operation are enhanced, the cutting stability of the lathe machining is improved, and the working precision can be maintained for a long time when long-time machining is performed.

[0020] Secondly, the slanted bed body design enables the iron chips to slide down in time by gravity, and the drainage capacity is excellent, so that the interference of chip accumulation on machining is reduced; the operation space of the slanted bed body is large in terms of tool changing and workpiece clamping, so that the operator can conveniently perform feeding and workpiece adjustment.

[0021] Thirdly, on the basis of the main shaft area and the saddle area with different inclination angles, the main shaft area adopts a horizontal and straight arrangement of the main shaft, the workbench rotates in a horizontal plane, and the saddle area adopts a vertical or inclined feeding machining mode, so that it is beneficial to machining of large and heavy workpieces with a large radial dimension and a relatively small axial dimension and a complex shape, the problem that the workpiece is too thick to be clamped is solved, the lathe can better cope with some special workpieces, and the use range of the lathe machining is greatly widened. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the lathe of the new type;

[0023] Figure 2 is a perspective view of the base assembly of the new type;

[0024] Figure 3-1 is a perspective view of the saddle assembly of the new type Figure 1 ;

[0025] Figure 3-2 is a perspective view of the saddle assembly of the new type Figure 2 ;

[0026] Figure 4-1 is a perspective view of the tool tower assembly of the new typeFigure 1 ;

[0027] Figure 4-2 is the three-dimensional schematic of the new tool turret assembly Figure 2 ;

[0028] Figure 5-1 is the three-dimensional schematic of the new spindle box assembly Figure 1 ;

[0029] Figure 5-2 is the partial structural schematic of the new spindle box assembly

[0030] Figure 5-3 is the internal structural schematic of the new spindle assembly

[0031] Figure 5-4 is the structural schematic of the new spindle encoder assembly

[0032] Figure 6 is the structural schematic of the new tailstock assembly

[0033] Explanation of reference numerals

[0034] Seat assembly 1, horizontal base 11, saddle area 112, spindle area 111, first linear rail 12, first screw rod 13, first servo motor 14, first motor seat 15, first tail end bearing seat 16

[0035] Saddle assembly 2, linkage slot 20, saddle 21, first linear rail slider 22, first screw rod nut 23, second linear rail 24, second screw rod 25, second servo motor 26, second motor seat 27, second tail end bearing seat 28

[0036] Tool turret assembly 3, tool turret seat 31, servo tool turret 32, second linear rail slider 34, second screw rod nut 35, tool turret gasket 36, tool turret adjustment block 37

[0037] Spindle box assembly 4, spindle motor 41, pulley 411, belt 412, spindle box 42, spindle assembly 43, spindle 431, pull rod 432, three-jaw chuck 433, rotary oil cylinder 434, encoder assembly 44, encoder gear ring 441, encoder read head 442, encoder read head support 443

[0038] Tailstock assembly 5, tailstock body 51, tailstock base 52, tailstock guide rail 53 DETAILED DESCRIPTION

[0039] The present case will be further described in detail in combination with the drawings and specific embodiments.

[0040] The present case relates to a high-rigidity numerical control lathe, such as Figure 1-6As shown, it comprises a base assembly 1, a saddle assembly 2, a turret assembly 3, a spindle box assembly 4 and a tailstock assembly 5.

[0041] As shown, Figure 1-2 The base assembly 1 has a horizontal base 11, and the bottom of the horizontal base 11 is provided with several foot pads 17 to stably support the horizontal base 11. The horizontal base 11 comprises a spindle area 111 and a saddle area 112 connected in front and back, and the assembly surfaces of the spindle area 111 and the saddle area 112 are both inclined, and the inclination angle of the assembly surface of the spindle area 111 is greater than that of the saddle area 112. In a preferred embodiment, the inclination angle of the assembly surface of the spindle area 111 is 20-40 degrees, and the inclination angle of the assembly surface of the saddle area 112 is 10-30 degrees.

[0042] The saddle assembly 2 is installed on the assembly surface of the saddle area 112 in a left-right movable manner, and the turret assembly 3 is installed on the saddle assembly 2 in a front-rear oblique movable manner. Since the saddle assembly 2 is inclined on the assembly surface of the saddle area 112, the turret assembly 3 moves obliquely forward and backward. The turret assembly 3 adopts a twelve-position turret to realize quick tool changing for lathe machining.

[0043] The spindle box assembly 4 and the tailstock assembly 5 are distributed left and right on the assembly surface of the spindle area 111. The spindle box assembly 4 is fixedly installed on the assembly surface of the spindle area 111, and the tailstock assembly 5 is installed on the assembly surface of the spindle area 111 in a left-right movable manner.

[0044] During operation, the workpiece is clamped between the spindle box assembly 4 and the tailstock assembly 5, and is supported by the saddle assembly 2. The turret assembly 3 performs double-axis reciprocating displacement to effectively machine the workpiece.

[0045] The design of the base assembly 1 constitutes a horizontal lathe, which is arranged in a slanted bed body. In particular, the spindle area 111 and the saddle area 112 have different inclination angles, which makes the center of gravity of the bed body more reasonable, and the stability during machining is better. The anti-vibration performance and load-carrying capacity during operation are enhanced, the cutting stability during machining is improved, and the working accuracy can be maintained for a long time during long-time machining. In addition, the slanted bed body design allows the iron chips to slide down timely under the action of gravity, and the drainage capacity is excellent, reducing the interference of chip accumulation on machining. Moreover, the operation space of the slanted bed body is large in terms of tool changing and workpiece clamping, which facilitates the operator to perform feeding and workpiece adjustment.

[0046] The horizontal lathe is based on the main shaft area 111 and the saddle area 112 with different inclination angles. The main shaft area 111 adopts horizontal and straight arrangement of the main shaft, and the workbench rotates in the horizontal plane. The saddle area 112 adopts machining mode of vertical or inclined feeding of the tool rest. Thus, it is beneficial for machining large and heavy workpieces with large radial size and relatively small axial size and complex shape, and solves the problem of too thick workpiece that cannot be clamped, so that the lathe can better cope with some special workpieces.

[0047] In the preferred embodiment, a displacement linkage mechanism is arranged between the saddle assembly 2 and the tailstock assembly 5. The displacement linkage mechanism includes a linkage slot 20, a linkage pin (not shown in the figure), and an oil pressure unit (not shown in the figure) for driving the linkage pin. The linkage slot 20 is arranged on the saddle assembly 2, and the linkage pin is movably arranged on the tailstock assembly 5. The linkage pin is matched and limited with the tailstock driving block under the driving of the oil pressure unit to realize linkage connection. Thus, the saddle assembly 2 can be reciprocally displaced left and right, and the tailstock assembly 5 can be synchronously reciprocally operated left and right in parallel.

[0048] In the preferred embodiment, as shown in Figure 2 , Figure 3-1 and Figure 3-2 , the base assembly 1 includes two groups of first linear rails 12, a first lead screw 13, and a first servo motor 14. The two groups of first linear rails 12 are arranged in parallel on the assembly surface of the saddle area 112 in front and back and high and low positions. The first lead screw 13 is arranged in parallel between the two groups of first linear rails 13, and the first lead screw 13 is drivingly connected with the first servo motor 14 through a shaft coupling. The saddle assembly 2 includes a saddle 21, two groups of first linear rail sliders 22 arranged on the saddle 21, and a first lead screw nut 23. The two groups of first linear rail sliders 22 are slidably installed on the two groups of first linear rails 12 one by one, and the first lead screw nut 23 is assembled on the first lead screw 13. Thus, the first lead screw 13 is driven to rotate by the first servo motor 14, and the two groups of first linear rail sliders 22 slide along the two groups of first linear rails 12 respectively under the cooperation of the first lead screw 13 and the first lead screw nut 23, so as to realize reciprocating displacement of the saddle assembly 2 left and right on the saddle area 112.

[0049] Further, the base assembly 1 further includes a first motor seat 15 and a first tail end bearing seat 16. The first servo motor 14 is installed on the first motor seat 15, and the two ends of the first lead screw 13 are respectively installed on the first motor seat 15 and the first tail end bearing seat 16.

[0050] In the preferred embodiment, as shown in Figures 3-1 to 4-2As shown, the saddle assembly 2 includes two sets of second linear rails 24, second lead screws 25 and second servo motors 26. The two sets of second linear rails 24 are arranged in parallel on the left and right of the saddle 21, the second lead screws 25 are arranged in parallel between the two sets of second linear rails 24, and the second lead screws 25 are drivingly connected with the second servo motors 26 through couplings. The tool tower assembly 3 includes a tool tower seat 31, a servo tool tower 32 arranged on the tool tower seat 31, two sets of second linear rail sliders 34 and second lead screw nuts 35. The two sets of second linear rail sliders 34 are slidingly installed on the two sets of second linear rails 24 one by one, and the second lead screw nuts 35 are assembled on the second lead screws 25. In this way, the second servo motors 26 drive the second lead screws 25 to rotate, and under the cooperation of the second lead screws 25 and the second lead screw nuts 35, the two sets of second linear rail sliders 34 slide along the two sets of second linear rails 24 respectively, realizing the reciprocating displacement operation of the tool tower assembly 3 on the saddle assembly 2.

[0051] Further, the saddle assembly 2 further includes a second motor seat 27 and a second tail end bearing seat 28, the second servo motors 26 are installed on the second motor seat 27, and the two ends of the second lead screws 25 are respectively installed on the second motor seat 27 and the second tail end bearing seat 28.

[0052] Further, the tool tower assembly 3 further includes a tool tower gasket 36 and a tool tower adjusting block 37. The tool tower gasket 36 is used for longitudinally adjusting the servo tool tower 32, i.e. for height adjustment, to ensure that the servo tool tower 32 is coaxially arranged with the main shaft of the main shaft box assembly 4. Similarly, the tool tower adjusting block 37 is used for transversely adjusting the servo tool tower 32, i.e. for left-right position fine adjustment.

[0053] The preferred embodiment is as follows: Figures 5-1 to 5-3 As shown, the main shaft box assembly 4 includes a main shaft motor 41, a main shaft box 42 and a main shaft assembly 43. The main shaft motor 41 and the main shaft box 42 are installed in the main shaft area 111. The main shaft assembly 43 includes a main shaft 431, a pull rod 432, a three-jaw chuck 433 and a rotary oil cylinder 434. The main shaft 431 penetrates through the main shaft box 42 and is installed and locked to perform precision detection operation. The main shaft motor 41 is drivingly connected with the main shaft 431 through a belt pulley 411 and a belt 412. The pull rod 432 penetrates through the main shaft 431, and the three-jaw chuck 433 and the rotary oil cylinder 434 are drivingly connected with the pull rod 432 in front and back, respectively. The pull rod 432, the three-jaw chuck 433 and the rotary oil cylinder 434 of the main shaft assembly 43 constitute a clamping mechanism, which realizes clamping or loosening operation of the workpiece under the cooperation of the related hydraulic oil system unit.

[0054] Further, the spindle box assembly 4 further comprises an encoder assembly component 44, which comprises an encoder gear ring 441, an encoder read head 442 and an encoder read head support 443, the encoder gear ring 441 is sleeved on the spindle 431, the encoder read head support 443 is installed on the spindle box 42, the encoder read head 442 is installed on the encoder read head support 443, and the encoder read head 442 is correspondingly arranged with the encoder gear ring 441.

[0055] Preferred embodiments, such as Figure 6 As shown, the tailstock assembly 5 comprises a tailstock body 51, a tailstock base 52 and a tailstock guide rail 53. The tailstock guide rail 53 is connected with the assembly surface of the spindle area 111 by locking, and the accuracy of the tailstock assembly 5 itself and the coaxial accuracy with the spindle box assembly 4 need to be corrected during the locking process. The tailstock base 52 is movably assembled on the tailstock guide rail 53, and the tailstock body 51 is arranged on the tailstock base 52. In specific embodiments, the tailstock assembly 5 is synchronously shifted left and right under the linkage action of the saddle assembly 2.

[0056] The numerical control machine tool has the advantages that the first servo motor 14, the second servo motor 26 and the spindle motor 41 are mainly controlled by the PLC related system, the three-jaw chuck 433 on the spindle box 42 rotates in the vertical plane, the tool tower assembly 3 parallelly, vertically or obliquely feeds, and the workpiece clamped horizontally is precisely machined by parallel, vertical or oblique feeding.

[0057] The above is only the preferred embodiment of the present application, and any equivalent changes and modifications made within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A high rigidity CNC lathe characterized by: The base assembly body, the saddle assembly body, the tool tower assembly body, the main shaft box assembly body and the tailstock assembly body; the base assembly body has a horizontal base, the horizontal base includes a front and rear connected main shaft area and a saddle area, the assembly surface of the main shaft area and the saddle area are both inclined, and the inclination angle of the assembly surface of the main shaft area is greater than that of the saddle area; the saddle assembly body is installed on the assembly surface of the saddle area in a left and right movable manner, the tool tower assembly body is installed on the saddle assembly body in a front and rear inclined movable manner; the main shaft box assembly body and the tailstock assembly body are distributed left and right on the assembly surface of the main shaft area, the main shaft box assembly body is fixedly installed on the assembly surface of the main shaft area, and the tailstock assembly body is installed on the assembly surface of the main shaft area in a left and right movable manner.

2. A high rigidity NC lathe as set forth in claim 1, characterized by: The inclination angle of the assembly surface of the main shaft area is 20-40 degrees, and the inclination angle of the assembly surface of the saddle area is 10-30 degrees.

3. A high rigidity NC lathe as set forth in claim 1, characterized by: The saddle assembly body and the tailstock assembly body are provided with a displacement linkage mechanism, the displacement linkage mechanism includes a linkage slot, a linkage bolt and an oil pressure unit driving the linkage bolt; the linkage slot is provided on the saddle assembly body, the linkage bolt is movably provided on the tailstock assembly body, and the linkage bolt is matched and limited with the tailstock driving block under the driving of the oil pressure unit to realize linkage connection.

4. A high rigidity NC lathe as set forth in claim 1, characterized by: The base assembly body includes two groups of first linear rails, a first lead screw and a first servo motor; the two groups of first linear rails are arranged in parallel on the assembly surface of the saddle area, the first lead screw is arranged in parallel between the two groups of first linear rails, and the first lead screw is in transmission connection with the first servo motor; the saddle assembly body includes a saddle, two groups of first linear rail sliders and a first lead screw nut provided on the saddle, the two groups of first linear rail sliders are slidably installed on the two groups of first linear rails in one-to-one correspondence, and the first lead screw nut is assembled on the first lead screw.

5. A high rigidity NC lathe as set forth in claim 1, characterized by: The saddle assembly body includes two groups of second linear rails, a second lead screw and a second servo motor; the two groups of second linear rails are arranged in parallel on the saddle, the second lead screw is arranged in parallel between the two groups of second linear rails, and the second lead screw is in transmission connection with the second servo motor; the tool tower assembly body includes a tool tower seat, a servo tool tower, two groups of second linear rail sliders and a second lead screw nut provided on the tool tower seat, the two groups of second linear rail sliders are slidably installed on the two groups of second linear rails in one-to-one correspondence, and the second lead screw nut is assembled on the second lead screw.

6. A high rigidity NC lathe as set forth in claim 5, characterized by: The tool tower assembly body further includes a tool tower gasket for longitudinally adjusting the servo tool tower and a tool tower adjusting block for transversely adjusting the servo tool tower.

7. A high rigidity NC lathe as set forth in claim 1, characterized by: The main shaft box assembly body includes a main shaft motor, a main shaft box and a main shaft assembly component; the main shaft motor and the main shaft box are installed on the main shaft area, the main shaft assembly component includes a main shaft, a pull rod, a three-jaw chuck and a rotary oil cylinder; the main shaft penetrates through the main shaft box, the main shaft motor is in transmission connection with the main shaft through a belt wheel and a belt, the pull rod penetrates through the main shaft, and the three-jaw chuck and the rotary oil cylinder are in transmission connection with the pull rod in front and back, respectively.

8. A high rigidity NC lathe as set forth in claim 7, characterized by: The main shaft box assembly further comprises an encoder assembly component, the encoder assembly component comprises an encoder gear ring, an encoder read head and an encoder read head support, the encoder gear ring is sleeved on the main shaft, the encoder read head support is installed on the main shaft box, the encoder read head is installed on the encoder read head support, and the encoder read head is correspondingly arranged with the encoder gear ring.

9. A high rigidity NC lathe as set forth in claim 1, characterized by: The tail seat assembly comprises a tail seat body, a tail seat base and a tail seat guide rail; the tail seat guide rail is lockingly connected with the assembly surface of the main shaft area, the tail seat base is movably assembled on the tail seat guide rail, and the tail seat body is arranged on the tail seat base.

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