A dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool

Abstract

The present invention relates to the field of machine tools, and in particular to a dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool, comprising a machine base, fixed tables are fixedly arranged at both ends of the top of the machine base, a chip removal groove is arranged between the two fixed tables at the upper end of the machine base, spindle boxes are fixedly arranged on the fixed tables, an inclined bed is arranged on one side of the machine base, two sets of spindle boxes are respectively assembled and connected with a first spindle and a second spindle arranged oppositely, servo motors are fixedly arranged on both sides of the machine base, the first spindle and the second spindle are respectively connected to the corresponding servo motors, a set of sliding screw pairs are symmetrically arranged at both ends of the inclined bed surface, and tool holder plates are slidably installed on the sliding screw pairs. The present invention can not only provide sufficient processing space for turning and grinding processes, but also realize flexible switching and adjustment of turning and grinding processing methods, and can realize the integrated processing process of turning, grinding and chamfering on the same machine tool.

Description

Technical Field

[0001] The invention relates to the technical field of machine tools, and in particular to a dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawing.

[0003] When processing a spherical part with a traditional machine tool, the workpiece needs to be turned on a CNC lathe first, and then transferred to a CNC grinder for grinding to obtain a qualified spherical part. The workpiece needs to be clamped multiple times during the transfer, which affects the processing accuracy and the processing efficiency is significantly slower. Summary of the invention

[0004] The purpose of the present invention is to provide a dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool, aiming to solve the above technical problems.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool, including a machine base, fixed tables are fixedly arranged at both ends of the top of the machine base, a chip removal groove is arranged at the upper end of the machine base between the two fixed tables, spindle boxes are fixedly arranged on each of the fixed tables, an inclined bed is arranged on one side of the machine base, two groups of spindle boxes are respectively assembled and connected with a first spindle and a second spindle which are relatively arranged, servo motors are fixedly arranged on both sides of the machine base, the first spindle and the second spindle are respectively connected to the corresponding servo motors, a group of sliding screw pairs are symmetrically arranged at both ends of the surface of the inclined bed, tool holder plates are slidably installed on the sliding screw pairs, and the two groups of tool holder plates correspond to the first spindle and the second spindle respectively.

[0007] The upper end of the tool holder plate is slidably mounted with a first tool assembly and a second tool assembly respectively in a direction perpendicular to the sliding screw pair, the first tool assembly comprises a sliding seat 1, a mounting bracket is fixedly mounted on the upper end of the sliding seat 1, a driving motor is fixedly mounted on one side of the mounting bracket, an upper slide plate and a lower slide plate are slidably mounted in the mounting bracket respectively, the driving motor drives the upper slide plate and the lower slide plate to slide towards each other, a grinding unit is arranged at the front end of the upper slide plate, and a turning unit is arranged at the front end of the lower slide plate.

[0008] The second tool assembly includes a sliding seat 2, a rotating table is arranged at the upper end of the sliding seat 2, a mounting plate is fixedly connected to the top of the rotating table, tool rods are arranged at both ends of the mounting plate, and chamfering tool heads and rounded corner tool heads are fixedly arranged at the front ends of the tool rods at both ends.

[0009] As a further solution of the present invention: the bottom of the tool holder plate is slidably installed on sliding plate one, the sliding plate one is fixedly installed on the upper end of sliding plate two, the sliding plate two is adapted to be slidably installed on the corresponding sliding screw pair, a sliding cylinder is fixedly provided on one end of the sliding plate, and the output end of the sliding cylinder is connected to the tool holder plate.

[0010] As a further solution of the present invention: the sliding direction of the tool holder plate on the sliding plate 1 and the sliding direction of the sliding plate 2 on the sliding screw pair are perpendicular to each other.

[0011] As a further solution of the present invention: an upper slide rail and a lower slide rail are respectively arranged inside the mounting bracket, an upper baffle plate is extended at one end of the upper slide plate, and a lower baffle plate is extended at one end of the lower slide plate. The upper slide plate is adapted to be slidably installed on the upper slide rail and is blocked and limited by the upper baffle plate, and the lower slide plate is adapted to be slidably installed on the lower slide rail and is blocked and limited by the lower baffle plate.

[0012] As a further solution of the present invention: the output end of the driving motor is connected to a gear, the bottom straight line of the upper slide plate is provided with an upper tooth groove, the top straight line of the lower slide plate is provided with a lower tooth groove, and the gear is meshed with the upper tooth groove and the lower tooth groove at the same time.

[0013] As a further solution of the present invention: the grinding unit comprises a grinding motor, the grinding motor is fixedly arranged on the top of the upper slide plate, and the output end of the grinding motor is connected to a grinding head.

[0014] As a further solution of the present invention: the turning unit includes a turning motor, which is fixedly arranged at one end of the lower slide plate, the output end of the turning motor is connected to a rotating shaft, the end of the rotating shaft is slidably installed with a turning seat, and a turning tool head is fixedly arranged inside the turning seat by a locking bolt.

[0015] As a further solution of the present invention: a lifting screw is threadedly connected to the bottom of the rotating shaft, and the top of the lifting screw is rotatably matched with the turning seat. A locking bolt 1 for locking and fixing the turning seat is provided on one side of the end of the rotating shaft.

[0016] As a further solution of the present invention: one end of the tool rod away from the tool head is rotatably matched with the mounting plate through an angle adjustment bolt, a positioning groove is penetrated through the tool rod, and a locking bolt three is passed through the positioning groove.

[0017] Beneficial effects of the present invention:

[0018] (1) By setting a first tool assembly and a second tool assembly, when processing a sphere, the workpiece is clamped and fixed in the first spindle or the second spindle, and a movement control command is sent through the CNC box of the machine tool, so that the turning unit gradually approaches the workpiece until it reaches the designated station, and then the workpiece is turned. After turning is completed, the driving motor controls the lower slide to retreat, and the upper slide to move forward synchronously, so that the grinding unit gradually approaches the workpiece, thereby realizing the synchronous advance and retreat process of the turning unit and the grinding unit. The "one advance and one retreat" method can not only provide sufficient processing space for the turning and grinding processes, but also realize the flexible switching and adjustment of the turning and grinding processing methods. After the processing is completed, the first tool assembly retreats and the second tool assembly advances. The chamfering tool head or the corner fillet tool head is rotated and adjusted to the designated station as needed to chamfer or fillet the workpiece, thereby realizing the integrated processing process of turning, grinding and corner filleting on the same machine tool.

[0019] (2) When processing a sphere, the turning head is first fed to the turning station. At this time, the axis of the rotating shaft is aligned with the center of the pre-processed sphere. Then, the turning motor drives the turning head to rotate around the axis of the rotating shaft through the rotating shaft, so that the sphere can be turned on the workpiece. When the diameter of the turned sphere needs to be adjusted, the lifting screw is rotated so that the lifting screw drives the turning seat to slide up and down at the end of the rotating shaft. After the position is determined, the turning seat is locked and fixed with a locking bolt, so that the diameter of the processed sphere can be finely adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the tool holder plate in the present invention.

[0023] Figure 3 It is a structural schematic diagram of the first tool assembly in the present invention.

[0024] Figure 4 It is a schematic diagram of the installation of the upper slide plate and the lower slide plate in the present invention.

[0025] Figure 5 It is a structural schematic diagram of the turning seat in the present invention.

[0026] Figure 6 It is a schematic diagram of the installation of the turning tool head in the present invention.

[0027] Figure 7 It is a structural schematic diagram of the second tool assembly in the present invention.

[0028] In the figure: 1, machine base; 11, fixed table; 12, chip removal groove; 2, spindle box; 3, servo motor; 4, first spindle; 5, second spindle; 6, inclined bed; 7, sliding screw pair; 8, tool holder plate; 81, sliding plate 1; 82, sliding plate 2; 83, sliding cylinder; 9, first tool assembly; 91, sliding seat 1; 92, mounting bracket; 921, upper slide rail; 922, lower slide rail; 93, drive motor; 931, gear; 94, upper slide plate; 941, grinding motor; 942, grinding head; 943, upper stop Plate; 944, upper tooth groove; 95, lower slide plate; 951, turning motor; 952, rotating shaft; 9521, locking bolt one; 9522, lifting screw; 953, turning seat; 9531, turning tool head; 9532, locking bolt two; 954, lower baffle plate; 955, lower tooth groove; 10, second tool assembly; 101, sliding seat two; 102, rotating table; 103, mounting plate; 104, tool rod; 1041, angle adjustment bolt; 1042, locking bolt three; 105, chamfering tool head; 106, fillet tool head. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 As shown, the present invention is a dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool, including a machine base 1, fixed tables 11 are fixedly arranged at both ends of the top of the machine base 1, a chip removal groove 12 is arranged between the two fixed tables 11 at the upper end of the machine base 1, a spindle box 2 is fixedly arranged on the fixed table 11, an inclined bed 6 is arranged on one side of the machine base 1, two groups of spindle boxes 2 are respectively assembled and connected with a first spindle 4 and a second spindle 5 which are relatively arranged, servo motors 3 are fixedly arranged on both sides of the machine base 1, the first spindle 4 and the second spindle 5 are respectively connected to the corresponding servo motors 3, a group of sliding screw pairs 7 are symmetrically arranged at both ends of the surface of the inclined bed 6, tool holder plates 8 are slidably installed on the sliding screw pairs 7, and the two groups of tool holder plates 8 correspond to the first spindle 4 and the second spindle 5 respectively.

[0031] Specifically, by arranging a first spindle 4 and a second spindle 5 on the upper end of the machine base 1, and arranging two sets of tool holder plates 8 corresponding to the first spindle 4 and the second spindle 5 respectively on the inclined bed 6, the machine tool has two independent machining systems, which can realize simultaneous machining of two sets of workpieces on one machine tool, thereby effectively improving the machining efficiency.

[0032] like Figure 2and Figure 3 As shown, the upper end of the tool holder plate 8 is slidably installed with a first tool assembly 9 and a second tool assembly 10 along a direction perpendicular to the sliding screw pair 7. The first tool assembly 9 includes a sliding seat 91. A mounting bracket 92 is fixedly installed on the upper end of the sliding seat 91. A driving motor 93 is fixedly installed on one side of the mounting bracket 92. An upper slide plate 94 and a lower slide plate 95 are slidably installed in the mounting bracket 92. The driving motor 93 drives the upper slide plate 94 and the lower slide plate 95 to slide toward each other. A grinding unit is arranged at the front end of the upper slide plate 94, and a turning unit is arranged at the front end of the lower slide plate 95.

[0033] like Figure 7 As shown, the second tool assembly 10 includes a sliding seat 101, a rotating table 102 is arranged on the upper end of the sliding seat 101, a mounting plate 103 is fixedly connected to the top of the rotating table 102, tool rods 104 are arranged at both ends of the mounting plate 103, and chamfering tool heads 105 and rounded corner tool heads 106 are fixedly arranged at the front ends of the tool rods 104 at both ends.

[0034] Specifically, by setting the first tool assembly 9 and the second tool assembly 10, when processing the sphere, the workpiece is clamped and fixed in the first spindle 4 or the second spindle 5, and the movement control command is sent through the machine tool CNC box, so that the turning unit gradually approaches the workpiece until it reaches the designated station, and then the workpiece is turned. After turning is completed, the driving motor 93 controls the lower slide 95 to retreat, and the upper slide 94 moves forward synchronously, so that the grinding unit gradually approaches the workpiece, thereby realizing the synchronous advance and retreat process of the turning unit and the grinding unit. The "one advance and one retreat" method can not only provide sufficient processing space for the turning and grinding processes, but also realize the flexible switching and adjustment of the turning and grinding processing methods. After the processing is completed, the first tool assembly 9 retreats and the second tool assembly 10 feeds. The chamfering tool head 105 or the corner fillet tool head 106 is rotated and adjusted to the designated station as needed to chamfer or fillet the workpiece, thereby realizing the integrated processing process of turning, grinding and chamfering on the same machine tool.

[0035] like Figure 2 As shown, the bottom of the tool holder plate 8 is slidably mounted on the sliding plate 1 81, the sliding plate 1 81 is fixedly mounted on the upper end of the sliding plate 2 82, the sliding plate 2 82 is adapted to be slidably mounted on the corresponding sliding screw pair 7, and a sliding cylinder 83 is fixedly provided at the end of the sliding plate 1 81, and the output end of the sliding cylinder 83 is connected to the tool holder plate 8.

[0036] Furthermore, the sliding direction of the tool holder plate 8 on the sliding plate 1 81 and the sliding direction of the sliding plate 2 82 on the sliding screw pair 7 are perpendicular to each other.

[0037] Specifically, the sliding process of the tool holder plate 8 on the sliding plate 1 81 and the sliding process of the sliding plate 2 82 on the sliding screw pair 7 are both controlled by the operating instructions of the machine tool CNC box. The moving stroke can be set in advance so that the tool can accurately reach the designated processing station. At the same time, compared with the gear transmission of traditional machine tools, the screw drive has the advantages of fast speed, high precision and low noise.

[0038] like Figure 3 and Figure 4 As shown, an upper slide rail 921 and a lower slide rail 922 are respectively provided inside the mounting bracket 92, an upper baffle plate 943 is extended at one end of the upper slide plate 94, and a lower baffle plate 954 is extended at one end of the lower slide plate 95. The upper slide plate 94 is adapted to be slidably installed on the upper slide rail 921 and is blocked and limited by the upper baffle plate 943, and the lower slide plate 95 is adapted to be slidably installed on the lower slide rail 922 and is blocked and limited by the lower baffle plate 954.

[0039] like Figure 4 As shown, the output end of the driving motor 93 is connected to a gear 931 , an upper tooth groove 944 is linearly arranged at the bottom of the upper slide plate 94 , a lower tooth groove 955 is linearly arranged at the top of the lower slide plate 95 , and the gear 931 is meshed with both the upper tooth groove 944 and the lower tooth groove 955 .

[0040] Specifically, during turning, the driving motor 93 drives the lower slide 95 to feed forward through the gear 931, while the upper slide 94 synchronously retreats until the turning unit reaches the workstation. When the upper slide 94 is blocked and limited by the upper baffle 943 during the retreat process, it means that the lower slide 95 has been fed to the limit position. Similarly, during grinding, when the lower slide 95 is blocked and limited by the lower baffle 954 during the retreat process, it means that the upper slide 94 has also been fed to the limit position, thereby constraining and limiting the feeding distance of the turning unit and the grinding unit to avoid overfeeding.

[0041] like Figure 3 As shown, the grinding unit includes a grinding motor 941 , which is fixedly arranged on the top of the upper slide plate 94 , and the output end of the grinding motor 941 is connected to a grinding head 942 .

[0042] like Figure 5 and Figure 6 As shown, the turning unit includes a turning motor 951, which is fixedly arranged at one end of the lower slide plate 95. The output end of the turning motor 951 is connected to a rotating shaft 952. A turning seat 953 is installed on the end of the rotating shaft 952 for sliding up and down. A turning tool head 9531 is fixed inside the turning seat 953 by a locking bolt 9532.

[0043] Furthermore, a lifting screw 9522 is threadedly connected to the bottom of the rotating shaft 952, and the top of the lifting screw 9522 is rotatably matched with the turning seat 953. A locking bolt 9521 is provided on one side of the end of the rotating shaft 952 for locking and fixing the turning seat 953.

[0044] Specifically, when processing a sphere, the turning tool head 9531 is first fed to the turning station. At this time, the axis of the rotating shaft 952 is aligned with the center of the pre-processed sphere. Then, the turning motor 951 drives the turning tool head 9531 to rotate around the axis of the rotating shaft 952 through the rotating shaft 952, so that a sphere can be turned on the workpiece. When the diameter of the turned sphere needs to be adjusted, the lifting screw 9522 is rotated so that the lifting screw 9522 drives the turning seat 953 to slide up and down at the end of the rotating shaft 952. After determining the position, the turning seat 953 is locked and fixed with a locking bolt 9521, so that fine adjustment of the diameter of the processed sphere can be achieved. After turning is completed, the turning tool head 9531 is retracted, and the grinding head 942 is fed at the same time. The grinding motor 941 drives the grinding head 942 to grind the surface of the sphere.

[0045] like Figure 7 As shown, one end of the knife rod 104 away from the knife head is rotatably matched with the mounting plate 103 through an angle adjustment bolt 1041, and a positioning groove is provided through the knife rod 104, and a locking bolt 1042 is passed through the positioning groove.

[0046] Specifically, when performing chamfering or rounding, the tool rod 104 can be deflected by rotating the angle adjustment bolt 1041, and then the tool rod 104 can be locked and fixed using the locking bolt, so that the deflection angle of the tool rod 104 can be adjusted, and then the processing angle during chamfering or rounding can be adjusted, which is easy to operate.

[0047] The working principle of the present invention is as follows: Figure 1-Figure 7As shown, when in use, the workpiece is clamped and fixed in the first spindle 4 or the second spindle 5, and the movement control command is sent through the machine tool CNC box, so that the turning unit gradually approaches the workpiece until it reaches the specified station, and then the workpiece is turned. The turning head 9531 is first fed to the turning station. At this time, the axis of the rotating shaft 952 is aligned with the center of the pre-processed sphere, and then the turning motor 951 drives the turning head 9531 to rotate around the axis of the rotating shaft 952 through the rotating shaft 952, so that a turning can be performed on the workpiece. Sphere, when it is necessary to adjust the diameter of the turned sphere, the lifting screw 9522 is rotated to make the lifting screw 9522 drive the turning seat 953 to slide up and down at the end of the rotating shaft 952. After determining the position, the turning seat 953 is locked and fixed using the locking bolt 9521, so as to achieve fine adjustment of the diameter of the processed sphere. After turning is completed, the turning head 9531 is retracted, and the grinding head 942 is fed at the same time, and the grinding motor 941 drives the grinding head 942 to grind the surface of the sphere. The "one advance and one retreat" method not only provides sufficient processing space for turning and grinding processes, but also realizes flexible switching and adjustment of turning and grinding processing methods. After processing is completed, the first tool assembly 9 retracts and the second tool assembly 10 advances. The chamfering head 105 or the corner fillet head 106 is rotated and adjusted to the designated workstation as needed to chamfer or fillet the workpiece, thereby realizing an integrated processing process of turning, grinding and chamfering on the same machine tool.

[0048] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A dual-spindle spherical turning, grinding and chamfering integrated CNC machine tool, comprising a machine base (1), fixed tables (11) are fixedly arranged at both ends of the top of the machine base (1), a chip removal groove (12) is arranged between the two fixed tables (11) at the upper end of the machine base (1), a spindle box (2) is fixedly arranged on each of the fixed tables (11), and an inclined bed (6) is arranged on one side of the machine base (1), characterized in that: The two groups of spindle boxes (2) are respectively equipped with a first spindle (4) and a second spindle (5) which are arranged opposite to each other. Servo motors (3) are fixedly arranged on both sides of the machine base (1). The first spindle (4) and the second spindle (5) are respectively connected to the corresponding servo motors (3) in a transmission manner. A group of sliding screw pairs (7) are symmetrically arranged at both ends of the surface of the inclined bed (6). A tool holder plate (8) is slidably mounted on each of the sliding screw pairs (7). The two groups of tool holder plates (8) respectively correspond to the first spindle (4) and the second spindle (5). The upper end of the tool holder plate (8) is slidably mounted with a first tool assembly (9) and a second tool assembly (10) in a direction perpendicular to the sliding screw pair (7), the first tool assembly (9) comprising a sliding seat (91), a mounting bracket (92) being fixedly mounted on the upper end of the sliding seat (91), a driving motor (93) being fixedly mounted on one side of the mounting bracket (92), an upper slide plate (94) and a lower slide plate (95) being slidably mounted in the mounting bracket (92), the driving motor (93) driving the upper slide plate (94) and the lower slide plate (95) to slide towards each other, a grinding unit being disposed at the front end of the upper slide plate (94), and a turning unit being disposed at the front end of the lower slide plate (95); The second tool assembly (10) comprises a second sliding seat (101), a rotating table (102) is arranged at the upper end of the second sliding seat (101), a mounting plate (103) is fixedly connected to the top of the rotating table (102), a tool rod (104) is arranged at both ends of the mounting plate (103), and a chamfering tool head (105) and a rounding tool head (106) are fixedly arranged at the front ends of the tool rods (104) at both ends respectively; An upper slide rail (921) and a lower slide rail (922) are respectively arranged inside the mounting bracket (92); an upper baffle plate (943) is extended from one end of the upper slide plate (94); a lower baffle plate (954) is extended from one end of the lower slide plate (95); the upper slide plate (94) is adapted to be slidably mounted on the upper slide rail (921) and is blocked and limited by the upper baffle plate (943); the lower slide plate (95) is adapted to be slidably mounted on the lower slide rail (922) and is blocked and limited by the lower baffle plate (954); The output end of the driving motor (93) is connected to a gear (931); an upper tooth groove (944) is linearly arranged at the bottom of the upper slide plate (94); a lower tooth groove (955) is linearly arranged at the top of the lower slide plate (95); and the gear (931) is meshed with both the upper tooth groove (944) and the lower tooth groove (955); The grinding unit comprises a grinding motor (941), the grinding motor (941) being fixedly arranged on the top of the upper slide plate (94), and the output end of the grinding motor (941) being connected to a grinding head (942); The turning unit comprises a turning motor (951), the turning motor (951) being fixedly arranged at one end of the lower slide plate (95), the output end of the turning motor (951) being connected to a rotating shaft (952), the end of the rotating shaft (952) being slidably mounted with a turning seat (953) up and down, and a turning tool head (9531) being fixedly arranged inside the turning seat (953) via a second locking bolt (9532); A lifting screw rod (9522) is threadedly connected to the bottom of the rotating shaft (952), and the top end of the lifting screw rod (9522) is rotatably matched with the turning seat (953). A locking bolt 1 (9521) for locking and fixing the turning seat (953) is provided at one side of the end of the rotating shaft (952); One end of the knife rod (104) away from the knife head is rotatably engaged with the mounting plate (103) via an angle adjustment bolt (1041); a positioning groove is provided through the knife rod (104), and a locking bolt three (1042) is passed through the positioning groove.

2. The dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool according to claim 1, characterized in that: The bottom of the tool holder plate (8) is slidably mounted on the sliding plate 1 (81), the sliding plate 1 (81) is fixedly mounted on the upper end of the sliding plate 2 (82), the sliding plate 2 (82) is adapted to be slidably mounted on the corresponding sliding screw pair (7), and a sliding cylinder (83) is fixedly arranged at the end of the sliding plate 1 (81), and the output end of the sliding cylinder (83) is connected to the tool holder plate (8).

3. The dual-spindle sphere turning, grinding and chamfering integrated CNC machine tool according to claim 2, characterized in that: The sliding direction of the tool holder plate (8) on the sliding plate 1 (81) and the sliding direction of the sliding plate 2 (82) on the sliding screw pair (7) are perpendicular to each other.

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