A spindle synchronous transmission device for double-station multi-wire cutting machine

Abstract

The present invention relates to a spindle synchronous transmission device for a double-station multi-wire cutting machine, comprising a main frame, a spindle assembly, a motor, a follower spindle assembly and a synchronous transmission mechanism; the spindle assembly and the follower spindle assembly are respectively arranged between the operation side and the transmission side of the main frame; the spindle assembly and the follower spindle assembly are connected between the sides located on the transmission side of the main frame through a synchronous transmission mechanism; the motors are respectively connected to one end of the spindle assembly located on the transmission side of the main frame and fixedly connected to the main frame. The present invention achieves synchronous operation between the spindle assemblies by adjusting the distribution of the motors and utilizing the synchronous transmission mechanism, thereby reducing the number of motors used; the original spindle assembly is improved in lightweight structure, and on the basis of ensuring the support stiffness of the follower spindle assembly, the influence of the inertia of the mass of the rotating part of the motor during the acceleration and deceleration process is reduced, so that the multi-wire cutting machine can run at a higher routing speed.

Description

Technical Field

[0001] The invention relates to the technical field of multi-wire cutting processing equipment, and in particular to a main shaft synchronous transmission device for a double-station multi-wire cutting machine. Background Art

[0002] Multi-wire cutting is a new cutting method that uses a diamond wire mesh to reciprocate at high speed to cut hard and brittle materials such as semiconductors into hundreds of thin slices at a time. A certain number of grooved wheels are installed in the multi-wire cutting machine, and their rotation center axes are parallel. The diamond wire is wound in the grooves of the grooved wheels to form a wire mesh, which is fed relative to the material for slicing.

[0003] In order to improve the efficiency of multi-wire cutting processing, a group of groove wheels is arranged between the two groups of groove wheels of the traditional single-station multi-wire cutting machine, forming a double-station multi-wire cutting machine with two symmetrical cutting operation areas. This double-station multi-wire cutting machine currently has a four-group groove wheel arrangement of upper and lower three or a five-group groove wheel arrangement of upper two and lower three; currently, the operation of each spindle groove wheel requires a separate motor to drive. For double-station models that need to use more spindles, due to the large size and high quality of the drive motor, the installation and arrangement of multiple motors occupies a larger space on the frame, which greatly increases the manufacturing cost of the machine tool. The increased number of motors also increases the use cost and maintenance cost of the machine tool.

[0004] Considering that the upper spindle of the double-station machine mainly guides the wire saw, and the lower middle spindle mainly separates the stations, converting it into a follower shaft can also meet the cutting needs, which can reduce the number of motors used; but since the current single follower spindle has a large mass, and only the cutting wire net drives these follower shafts in the existing machine structure, the inertia of the follower shaft during rotation will affect the stable operation of the wire net, thereby affecting the slicing quality of the material. Therefore, in the field of double-station multi-wire cutting, it is necessary to design a device that can allow each spindle to operate synchronously and at high speed. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a spindle synchronous transmission device for a double-station multi-wire cutting machine, which can reduce the number of motors used and ensure the synchronous high-speed operation of each spindle component when there are a large number of spindles, thereby reducing the use cost of the double-station multi-wire cutting machine.

[0006] The technical solution adopted by the present invention is as follows:

[0007] The present invention proposes a spindle synchronous transmission device for a double-station multi-wire cutting machine, comprising a main frame, a spindle assembly, a motor, a follower spindle assembly and a synchronous transmission mechanism; the spindle assembly and the follower spindle assembly are respectively arranged between the operation side and the transmission side of the main frame; the spindle assembly and the follower spindle assembly are connected between one side of the transmission side of the main frame through the synchronous transmission mechanism; the motors are respectively connected to one end of the spindle assembly located on the transmission side of the main frame and are fixedly connected to the main frame.

[0008] Furthermore, the follower main shaft assembly includes a main shaft steel core, a locking bolt, a groove wheel sleeve, an end cover, a transmission side sleeve, a transmission side main shaft, a rolling bearing, an operating side main shaft and an operating side sleeve; the two ends of the main shaft steel core are respectively fitted with the operating side main shaft and the transmission side main shaft at a certain taper; the bolt head of the locking bolt is coaxially countersunk to the inside of the operating side main shaft, the rod body coaxially penetrates the main shaft steel core, and the bolt tail is coaxially connected to the inside of the transmission side main shaft; the groove wheel sleeve is bonded to the outer circumferential surface of the main shaft steel core; the rolling bearings are respectively assembled in pairs on the inner and outer sides of the transmission side main shaft and the operating side main shaft; the transmission side sleeve and the operating side sleeve are respectively sleeved on the two pairs of rolling bearing outer rings on the corresponding sides, and their inner and outer ends are respectively fixedly connected to the end covers; the two ends of the follower main shaft assembly are respectively connected to the inner hole walls correspondingly opened on the operating side and the transmission side of the main frame through the transmission side sleeve and the operating side sleeve.

[0009] Furthermore, washers and round nuts are installed between a pair of rolling bearings located on the outer sides of the transmission side main shaft and the operating side main shaft and the end covers at the outer ends of the corresponding sides for axial positioning of the rolling bearings.

[0010] Furthermore, an intermediate inner spacer ring and an intermediate outer spacer ring are respectively installed between the two pairs of rolling bearings on the transmission side main shaft and the operating side main shaft.

[0011] Furthermore, the inner circumferential surface of the main shaft steel core is arranged with long ribs.

[0012] Furthermore, the sheave jacket is made of polyester material.

[0013] Furthermore, the locking bolt is a hexagon socket bolt head.

[0014] Furthermore, the synchronous transmission mechanism includes a tensioning wheel, a synchronous belt and a synchronous pulley; the synchronous pulleys are respectively assembled on one end of the main shaft assembly located on the transmission side and one end of the main shaft on the transmission side of the follower main shaft assembly; the synchronous belt is meshed and connected between the synchronous pulleys; the tensioning wheels are respectively installed on the transmission side of the main frame, and are used to tension each section of the synchronous belt; the main shaft assembly is driven by a motor, and the follower main shaft assembly is driven to operate synchronously therewith through the synchronous transmission mechanism.

[0015] Furthermore, the two sides of the main shaft assembly and the follower main shaft assembly are respectively fixedly installed in the corresponding inner hole walls on both sides of the main frame, adopting a triangular arrangement of one upper and three lower or a rectangular arrangement of two upper and three lower.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adjusts the upper guide spindle assembly and the spindle assembly for separating the workstations in the middle of the lower end of the conventional double-station multi-wire cutting machine into a follower spindle assembly, cancels the use of the motor connected and installed therewith, and only retains the motors at the left and right ends of the lower end as the power driving source; at the same time, the stable transmission ratio of the synchronous belt drive is utilized to realize the synchronous high-speed operation of the follower spindle assembly and the active spindle assembly, and ensures that the motors have sufficient power sources while reducing the number of motors used, thereby reducing the use cost of the multi-wire cutting machine.

[0018] 2. The present invention performs a certain degree of lightweight processing on the basis of ensuring the supporting rigidity of the follower spindle assembly, mainly including the adjustment of the operating side spindle, the spindle steel core and the transmission side spindle structure. The operating side and transmission side spindles that do not bear the load are changed into hollow rotating bodies compared with the original operating side and transmission side spindles. For the spindle steel core that bears the wire network load, a linear array of grooves is sunk along the inner circumference on the basis of the wall thickness of the original spindle steel core, leaving a criss-cross rib structure, which ensures the supporting rigidity of the spindle steel core while reducing the wall thickness. The lightweight structural adjustment reduces the influence of the inertia of the mass of the rotating part of the follower assembly during the acceleration and deceleration of the motor, thereby increasing the operating speed of the motor so that the multi-wire cutting machine can run at a higher routing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front isometric view of embodiment 1 of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the follower spindle assembly in the present invention;

[0021] Figure 3 It is a schematic cross-sectional view of the main shaft steel core in the follower main shaft assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the main shaft assembly of an existing double-station multi-wire cutting machine;

[0023] Figure 5 is a structural schematic diagram of a synchronous transmission mechanism in Embodiment 1 of the present invention;

[0024] Figure 6 is a rear isometric view of the first embodiment of the present invention;

[0025] Figure 7is a structural schematic diagram of a synchronous transmission mechanism in Embodiment 2 of the present invention;

[0026] Figure 8 is a rear isometric view of a second embodiment of the present invention;

[0027] Fig. 9 It is a rear isometric view of an existing five-axis dual-station multi-wire cutting machine;

[0028] Fig.10 It is a rear isometric view of an existing four-axis dual-station multi-wire cutting machine.

[0029] Among them, the figure markings are: 1-first follower spindle assembly; 2-first spindle assembly; 3-second follower spindle assembly; 4-second spindle assembly; 5-third follower spindle assembly; 6-motor; 7-main frame; 8-spindle steel core; 9-locking bolt; 10-groove wheel sleeve; 11-first end cover; 12-transmission side sleeve; 13-second end cover; 14-transmission side spindle; 15-washer; 16-round nut; 17-rolling bearing; 18-third end cover; 19-middle inner spacer ring; 20-middle outer spacer ring; 21-fourth end cover; 22-operating side spindle; 23-operating side sleeve; 24-original locking bolt; 25-original operating side spindle; 26-original spindle steel core; 27-original transmission side spindle; 28-tensioning wheel; 29-synchronous belt; 30-synchronous pulley. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] It should be noted that in the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "up", "down", "top", "bottom", "one side", "the other side", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0032] Embodiment 1

[0033] See attached Figure 1-6, a specific structure of an embodiment of a spindle synchronous transmission device for a double-station multi-wire cutting machine proposed by the present invention is given. The device includes a first follower spindle assembly 1, a first spindle assembly 2, a second follower spindle assembly 3, a second spindle assembly 4, a third follower spindle assembly 5, a motor 6, a main frame 7 and a synchronous transmission mechanism; the first follower spindle assembly 1, the first spindle assembly 2, the second follower spindle assembly 3, the second spindle assembly 4 and the third follower spindle assembly 5 are respectively arranged between the operating side and the transmission side of the main frame 7, and adopt a rectangular arrangement of two on top and three on bottom, wherein the first spindle assembly 2 and the second spindle assembly 4 are respectively located at the left and right ends of the lower row and have the same structure, adopting the following Figure 4 The existing spindle assembly shown in the figure can be used; the first follower spindle assembly 1, the first spindle assembly 2, the second follower spindle assembly 3, the second spindle assembly 4 and the third follower spindle assembly 5 are located on the outside of the transmission side of the main frame 7 and are connected by a synchronous transmission mechanism; the motor 6 is respectively connected to one end of the first spindle assembly 2 and the second spindle assembly 4 on the transmission side of the main frame 7, and the motor 6 is fixedly connected to the main frame 7. The main frame 7 and the follower spindle assembly are divided into an operating side and a transmission side, the operating side is the side where the worker operates the machine tool, and the transmission side is the side connected to the motor 6.

[0034] The first follower spindle assembly 1, the second follower spindle assembly 3 and the third follower spindle assembly 5 have the same structure, and all include a spindle steel core 8, a locking bolt 9, a groove wheel sleeve 10, a first end cover 11, a transmission side sleeve 12, a second end cover 13, a transmission side spindle 14, a washer 15, a round nut 16, a rolling bearing 17, a third end cover 18, an intermediate inner spacer ring 19, an intermediate outer spacer ring 20, a fourth end cover 21, an operating side spindle 22 and an operating side sleeve The two ends of the spindle steel core 8 are respectively fitted with the operating side spindle 22 and the transmission side spindle 14 at a certain taper, and the operating side spindle 22 and the transmission side spindle 14 are both hollow rotating bodies; the locking bolt 9 is a hexagonal bolt head, the bolt head is coaxially countersunk to the inside of the operating side spindle 22, the rod body coaxially penetrates the spindle steel core 8, and the bolt tail is coaxially connected with the internal thread corresponding to the internal setting of the transmission side spindle 14 through the external thread; the groove wheel sleeve 10 It is made of polyester material and is coaxially bonded to the outer circumference of the main shaft steel core 8; the rolling bearings 17 are respectively assembled in pairs on the inner and outer sides of the transmission side main shaft 14 and the operating side main shaft 22, that is, four rolling bearings 17 are assembled on the outside of the transmission side main shaft 14, and four rolling bearings 17 are also assembled on the outside of the operating side main shaft 22, and they are all installed in pairs of two, and each pair of rolling bearings 17 is separated by an intermediate inner spacer ring 19 and an intermediate outer spacer ring 20; the transmission side sleeve 12 and the operating side sleeve 23 are respectively sleeved on the outer rings of the two pairs of rolling bearings 17 on the corresponding sides, and the inner and outer ends of the transmission side sleeve 12 are respectively coaxially fixedly connected to the first end cover 11 and the second end cover 13, and the inner and outer ends of the operating side sleeve 23 are respectively coaxially fixedly connected to the third end cover 18 and the fourth end cover 21; the two ends of each follower main shaft are respectively fixedly connected to the inner hole walls correspondingly opened on the operating side and the transmission side of the main frame 7 through the transmission side sleeve 12 and the operating side sleeve 23. A washer 15 and a round nut 16 are coaxially assembled between a pair of rolling bearings 17 located on the outer side of the transmission side main shaft 14 and the second end cover 13. Similarly, a washer 15 and a round nut 16 are coaxially assembled between a pair of rolling bearings 17 located on the outer side of the operating side main shaft 22 and the fourth end cover 21 for axial positioning of the rolling bearings 17.

[0035] One end face of the inner ring of the rolling bearing 17 is axially positioned by the shoulder of the transmission side main shaft 14 or the operating side main shaft 22, and the other end face is axially positioned by the round nut 16; the inner ring of the rolling bearing 17 and the transmission side main shaft 14 or the operating side main shaft 22 are in a small interference fit; the middle inner spacer ring 19 and the transmission side main shaft 14 or the operating side main shaft 22 are in a small clearance fit; the outer ring of the rolling bearing 17, the middle outer spacer ring 20 and the transmission side sleeve 12 or the operating side sleeve 23 are all in a small clearance fit; the first end cover 11 and the first end cover 11 are ... The two end covers 13 are fixedly connected to the two ends of the transmission side sleeve 12 by bolt groups respectively, and one end face of the outer ring of a pair of rolling bearings 17 located on the inner side is axially positioned by the first end cover 11, and the other end face is axially positioned by the second end cover 13 and the gasket 15; the third end cover 18 and the fourth end cover 21 are fixedly connected to the two ends of the operating side sleeve 23 by bolt groups respectively, and one end face of the outer ring of a pair of rolling bearings 17 located on the inner side is axially positioned by the third end cover 18, and the other end face is axially positioned by the fourth end cover 21 and the gasket 15.

[0036] The inner circumference of the main shaft steel core 8 is evenly arranged with long ribs in a tic-tac-toe pattern.

[0037] The synchronous transmission mechanism includes a tensioning wheel 28, a synchronous belt 29 and a synchronous pulley 30; the synchronous pulley 30 is coaxially key-connected and sleeved on one end of each main shaft assembly located on the transmission side and one end of the transmission side main shaft 14 of each follower main shaft assembly; the synchronous belt 29 is meshed and connected between the synchronous pulleys 30; the tensioning wheels 28 are respectively installed on the transmission side of the main frame 7, and are used to tension each section of the synchronous belt 29 to prevent the synchronous belt 29 from shaking; the first main shaft assembly 2 and the second main shaft assembly 4 are respectively driven by the motor 6, and the follower main shaft assembly is synchronized with it through the synchronous transmission mechanism.

[0038] Embodiment 2

[0039] See attached Figure 7-8 , gives the specific structure of another embodiment of the spindle synchronous transmission device for a double-station multi-wire cutting machine proposed by the present invention. The structure of this embodiment is basically the same as that of embodiment 1, except that: the spindle assembly and the follower spindle assembly adopt a triangle arrangement of one on top and three on the bottom, that is, the number of the spindle assembly and the follower spindle assembly is two, and the two spindle assemblies are also located at the left and right ends of the bottom row.

[0040] When the present invention is used, two motors 6 synchronously drive the two main shaft parts to run, and the synchronous pulley 30 at the tail end of the main shaft part is synchronously operated. The synchronous pulley 30 and the synchronous belt 29 are meshed and driven by the gears, so that the synchronous pulley 30 at the tail end of the follower main shaft part is synchronously operated. There is a certain gap between the transmission side main shaft 14 in the follower main shaft part and the first end cover 11 and the second end cover 13, and there is a certain gap between the operating side main shaft 22 and the third end cover 18 and the fourth end cover 21. There is a certain gap between the main shaft steel core 8 and the first end cover 11 and the third end cover 18, and the axial pre-tightening of the locking bolt 9 makes the main shaft steel core 8 and the contact cone surface of the transmission side main shaft 14 and the operating side main shaft 22 more tightly connected. The transmission side main shaft 14 and the operating side main shaft 22 in the follower main shaft part are synchronously operated together with the main shaft steel core 8 and the inner ring of the rolling bearing 17, the middle inner spacer ring 19, etc. driven by the synchronous pulley 30. For the rectangular arrangement of the main shaft assembly in the five-axis multi-wire cutting machine, two active shafts drive one follower shaft to rotate in the horizontal direction, and two active shafts drive two follower shafts to rotate in the vertical direction; for the triangular arrangement of the main shaft assembly in the four-axis multi-wire cutting machine, two active shafts drive one follower shaft to rotate in the horizontal direction, and two active shafts drive one follower shaft to rotate in the vertical direction. Such a main shaft arrangement can provide sufficient power for the main shaft assembly, so that the motor speed is effectively guaranteed, so that the multi-wire cutting machine can run at a sufficiently high routing speed.

[0041] Matters not covered in the present invention are all known technologies.

[0042] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A spindle synchronous transmission device for a double-station multi-wire cutting machine, characterized in that: The device comprises a main frame, a main shaft assembly, a motor, a follower main shaft assembly and a synchronous transmission mechanism; the main shaft assembly and the follower main shaft assembly are respectively arranged between the operation side and the transmission side of the main frame; the main shaft assembly and the follower main shaft assembly are connected between the sides located on the transmission side of the main frame through the synchronous transmission mechanism; the motors are respectively connected to one end of the main shaft assembly located on the transmission side of the main frame and are fixedly connected to the main frame; The follower main shaft assembly comprises a main shaft steel core, a locking bolt, a groove wheel sleeve, an end cover, a transmission side sleeve, a transmission side main shaft, a rolling bearing, an operating side main shaft and an operating side sleeve; the two ends of the main shaft steel core are respectively fitted with the operating side main shaft and the transmission side main shaft at a certain taper; the bolt head of the locking bolt is coaxially countersunk to the inside of the operating side main shaft, the rod body coaxially penetrates the main shaft steel core, and the bolt tail is coaxially connected to the inside of the transmission side main shaft; the groove wheel sleeve is bonded to the outer circumferential surface of the main shaft steel core; the rolling bearings are respectively assembled in pairs on the inner and outer sides of the transmission side main shaft and the operating side main shaft; the transmission side sleeve and the operating side sleeve are respectively sleeved on the two pairs of rolling bearing outer rings on the corresponding sides, and the inner and outer ends thereof are respectively fixedly connected to the end covers; the two ends of the follower main shaft assembly are respectively connected to the inner hole walls correspondingly opened on the operating side and the transmission side of the main frame through the transmission side sleeve and the operating side sleeve; The synchronous transmission mechanism includes a tensioning wheel, a synchronous belt and a synchronous pulley; the synchronous pulleys are respectively mounted on one end of the main shaft assembly located on the transmission side and one end of the main shaft on the transmission side of the follower main shaft assembly; the synchronous belt is meshed and connected between the synchronous pulleys; the tensioning wheels are respectively mounted on the transmission side of the main frame, and are used to tension each section of the synchronous belt; the main shaft assembly is driven by a motor, and the follower main shaft assembly is synchronously operated with it through the synchronous transmission mechanism; The two sides of the main shaft assembly and the follower main shaft assembly are respectively fixedly mounted in the inner hole walls corresponding to the two sides of the main frame, in a triangular arrangement of three on top and three on bottom or a rectangular arrangement of two on top and three on bottom; The inner circumference of the main shaft steel core is arranged with long ribs in a tic-tac-toe shape.

2. A spindle synchronous transmission device for a double-station multi-wire cutting machine according to claim 1, characterized in that: A pair of rolling bearings located on the outer sides of the transmission side main shaft and the operating side main shaft and the end covers at the corresponding outer ends are equipped with washers and round nuts for axial positioning of the rolling bearings.

3. The spindle synchronous transmission device for a double-station multi-wire cutting machine according to claim 1, characterized in that: An intermediate inner spacer ring and an intermediate outer spacer ring are respectively installed between the two pairs of rolling bearings on the transmission side main shaft and the operation side main shaft.

4. The spindle synchronous transmission device for a double-station multi-wire cutting machine according to claim 1, characterized in that: The sheave housing is made of polyester material.

5. The spindle synchronous transmission device for a double-station multi-wire cutting machine according to claim 1, characterized in that: The locking bolt is a hexagon socket bolt head.

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