Multi-spindle drilling machine

Abstract

The present application belongs to the technical field of PCB manufacturing devices, and relates to a multi-spindle drilling machine. The multi-spindle drilling machine comprises a machine tool, worktables and a plurality of spindle mechanisms; the worktables are slidably installed on the machine tool in a first direction, and each worktable is used for bearing at least one material plate; all the spindle mechanisms are slidably installed on the machine tool in a second direction, and every two spindle mechanisms are used for processing the same material plate; each spindle mechanism comprises a base plate, a driving assembly, a spindle and an air-bearing sleeve, wherein the base plate is slidably installed on the machine tool in the second direction, the driving assembly and the air-bearing sleeve are respectively installed on the base plate, an air-bearing hole is formed in the air-bearing sleeve, the upper end of the spindle is connected to the driving assembly, the lower end of the spindle penetrates through the air-bearing hole, and an air-bearing gap is formed between the spindle and the air-bearing sleeve; and the driving assembly is used for driving the spindle to move in a third direction. The multi-spindle drilling machine can improve the processing efficiency, and can reduce the energy consumption.

Description

Multi-spindle drilling machine

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on December 5, 2023, with application number 202323305541.9 and application name “Multi-axis Drilling Machine”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of PCB board manufacturing equipment, and in particular relates to a multi-axis drilling machine. Background Art

[0003] PCBs, short for printed circuit boards, are a crucial component in the electronics industry. Virtually every electronic device, from small electronic watches and calculators to large computers, communications equipment, and military weapon systems, that contains integrated circuits and other electronic components, requires a printed circuit board to electrically interconnect them. They replace complex wiring to achieve electrical connections between components in a circuit. This not only simplifies the assembly and soldering of electronic products, reducing the wiring workload required by traditional methods and alleviating worker labor, but also reduces overall size, lowers product costs, and improves the quality and reliability of electronic equipment.

[0004] PCBs demanded by the end market are generally small. To improve processing efficiency, the PCB production process typically involves cutting several identical small pieces from a single large PCB, which are then cut. However, existing PCB drilling machines, whether single-spindle or multi-spindle, drill holes on a single PCB using a single spindle mechanism. This method results in slow processing and low efficiency.

[0005] Utility Model Content

[0006] The technical problem to be solved by the present application is to provide a multi-axis drilling machine to address the technical problem of low processing efficiency of existing PCB drilling machines.

[0007] To solve the above technical problems, an embodiment of the present application provides a multi-axis drilling machine, comprising a machine tool, a worktable, and a plurality of spindle mechanisms, wherein the worktable is slidably mounted on the machine tool along a first direction, and the worktable is used to carry at least one sheet; each of the spindle mechanisms is slidably mounted on the machine tool along a second direction, and every two of the spindle mechanisms are used to process the same sheet;

[0008] The spindle mechanism includes a base plate, a drive assembly, a spindle, and an air flotation sleeve. The base plate is slidably mounted on the machine tool along the second direction. The drive assembly and the air flotation sleeve are respectively mounted on the base plate. An air flotation hole is provided on the air flotation sleeve. The upper end of the spindle is connected to the drive assembly, and the lower end of the spindle is arranged through the air flotation hole. An air flotation gap is formed between the spindle and the air flotation sleeve.

[0009] The driving assembly is used to drive the main shaft to move along the third direction.

[0010] Optionally, the driving assembly includes a linear motor and a driving plate, the linear motor is mounted on the base plate, the driving plate is connected to the linear motor, and the linear motor is used to drive the driving plate to move along the third direction;

[0011] The upper end of the main shaft is connected to the driving plate.

[0012] Optionally, the positions of the air floating sleeve and the main shaft along the plane where the first direction and the second direction are located are adjustable.

[0013] Optionally, the spindle mechanism further comprises an air-floating sleeve clamp, the air-floating sleeve is mounted on the air-floating sleeve clamp, and the air-floating sleeve can move relative to the air-floating sleeve clamp along a plane where the first direction and the second direction are located.

[0014] Optionally, the spindle mechanism further includes a hoisting connecting rod, which is connected between the driving assembly and the spindle.

[0015] Optionally, the main shaft mechanism further includes a locking assembly, and the hoisting link can form an unlocked state or a locked state with the main shaft through the locking assembly, and the main shaft can follow the movement of the air floating sleeve in the unlocked state.

[0016] Optionally, the multi-axis drilling machine further includes a plurality of first driving mechanisms, which are arranged in a one-to-one correspondence with the plurality of spindle mechanisms, and the first driving mechanisms are used to drive the corresponding spindle mechanisms to slide along the second direction.

[0017] Optionally, the multi-axis drilling machine further includes a second driving mechanism, and the second driving mechanism is used to drive the workbench to slide along the first direction.

[0018] Optionally, a plurality of the workbenches are provided, and the workbenches are spaced apart along the second direction.

[0019] Optionally, the machine tool includes a bed and a crossbeam connected to the bed, the workbench is slidably mounted on the bed along the first direction, and the spindle mechanism is slidably mounted on the crossbeam along the second direction.

[0020] The multi-axis drilling machine according to the embodiment of the present application can simultaneously drill holes in the same sheet material using multiple spindle mechanisms, saving processing time and improving processing efficiency. Furthermore, the multi-axis drilling machine according to the embodiment of the present application utilizes an air-floating spindle mechanism in which the spindle is combined with an air-floating sleeve. This reduces costs compared to traditional clamping spindle structures (where the spindle is clamped and driven by a clamping structure). Furthermore, since the drive assembly only needs to drive the spindle, energy consumption at the drive assembly can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a multi-spindle drilling machine provided in one embodiment of the present application;

[0022] FIG2 is a schematic diagram of the spindle mechanism in FIG1 ;

[0023] FIG3 is a schematic diagram of the air flotation sleeve in FIG2 .

[0024] The reference numerals in the specification are as follows:

[0025] 1. Machine tool; 11. Bed; 12. Crossbeam;

[0026] 2. Workbench;

[0027] 3. Spindle mechanism; 31. Base plate; 32. Drive assembly; 321. Linear motor; 322. Drive plate; 33. Spindle; 34. Air bearing sleeve; 341. Screw hole; 35. Air bearing sleeve clamp; 36. Lifting connecting rod; 37. Drill bit; 38. Locking assembly;

[0028] 4. Material board;

[0029] 5. Second driving mechanism;

[0030] Y, first direction; X, second direction; Z, third direction. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by this application more clearly understood, this application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0032] As shown in Figures 1 to 3, the multi-spindle drilling machine provided in an embodiment of the present application includes a machine tool 1, a worktable 2, and multiple spindle mechanisms 3. The worktable 2 is slidably mounted on the machine tool 1 along a first direction Y and is used to support at least one sheet 4. Each spindle mechanism 3 is slidably mounted on the machine tool 1 along a second direction X, and every two spindle mechanisms 3 are used to process the same sheet 4.

[0033] The spindle mechanism 3 includes a base plate 31, a drive assembly 32, a spindle 33 and an air flotation sleeve 34. The base plate 31 is slidably mounted on the machine tool 1 along the second direction X. The drive assembly 32 and the air flotation sleeve 34 are respectively mounted on the base plate 31. The air flotation sleeve 34 is provided with an air flotation hole. The upper end of the spindle 33 is connected to the drive assembly 32, and the lower end of the spindle 33 is arranged through the air flotation hole. A air flotation gap is formed between the spindle 33 and the air flotation sleeve 34.

[0034] The driving assembly 32 is used to drive the main shaft 33 to move along the third direction Z.

[0035] The multi-axis drilling machine provided in the embodiment of the present application can simultaneously use multiple spindle mechanisms 3 to drill the same sheet 4 when processing a sheet 4, thereby saving processing time and improving processing efficiency. Furthermore, the multi-axis drilling machine in the embodiment of the present application utilizes an air-floating spindle mechanism 3, which incorporates a spindle 33 and an air-floating sleeve 34. This reduces costs compared to conventional clamping spindle structures (where the spindle 33 is clamped and driven by a clamping structure). Furthermore, since the drive assembly 32 only needs to drive the spindle 33, energy consumption at the drive assembly 32 can be reduced.

[0036] In one embodiment, as shown in FIG2 , the driving assembly 32 includes a linear motor 321 and a driving plate 322 . The linear motor 321 is mounted on the base plate 31 . The driving plate 322 is connected to the linear motor 321 . The linear motor 321 is used to drive the driving plate 322 to move along the third direction Z.

[0037] The upper end of the main shaft 33 is connected to the driving plate 322 .

[0038] When the linear motor 321 is working, it can drive the driving plate 322 to move along the third direction Z, thereby driving the main shaft 33 to move relative to the air bearing sleeve 34 along the third direction Z to achieve drilling. During the drilling process, the air bearing sleeve 34 can provide guidance for the movement of the main shaft 33.

[0039] In one embodiment, because multiple spindle mechanisms 3 are used to drill the same sheet 4, the Y-axis coordinates of the multiple spindle mechanisms 3 corresponding to the same sheet 4 must be identical. This requires that the front-to-back position of the spindle 33, i.e., its position in the Y-axis, must be adjusted when installing or replacing the spindle. Therefore, the position of the air bearing sleeve 34 and the spindle 33 along the plane containing the first direction Y and the second direction X must be adjustable.

[0040] In a specific embodiment, as shown in Figure 2, the spindle mechanism 3 also includes an air floating sleeve clamp 35, and the air floating sleeve 34 is installed on the air floating sleeve clamp 35. The air floating sleeve 34 can move relative to the air floating sleeve clamp 35 along the plane where the first direction Y and the second direction X are located, so as to achieve position adjustment of the air floating sleeve 34 along the plane where the first direction Y and the second direction X are located.

[0041] Preferably, as shown in FIG3 , a plurality of screw holes 341 may be provided on the upper edge of the air flotation sleeve 34 , through which the air flotation sleeve 34 and the air flotation sleeve clamp 35 can be temporarily fixed, and the position of the air flotation sleeve 34 can be easily adjusted.

[0042] In one embodiment, as shown in FIG. 2 , the spindle mechanism 3 further includes a lifting connecting rod 36 , which is connected between the driving assembly 32 and the spindle 33 to achieve installation of the spindle 33 .

[0043] In one embodiment, as shown in FIG2 , the spindle mechanism 3 further includes a locking assembly 38 , through which the hoisting link 36 can be locked or unlocked with the spindle 333 , and the spindle 33 can follow the movement of the air-floating sleeve 34 in the unlocked state.

[0044] In one embodiment, as shown in FIG. 2 , the spindle mechanism 3 further includes a drill bit 37 , which is mounted on the bottom of the spindle 33 and is used for drilling holes.

[0045] In one embodiment, the multi-axis drilling machine further includes a plurality of first driving mechanisms, which are arranged in a one-to-one correspondence with the plurality of spindle mechanisms 3 , and the first driving mechanisms are used to drive the corresponding spindle mechanisms 3 to slide along the second direction X.

[0046] Thus, each spindle mechanism 3 can be driven independently along the second direction X and the third direction Z.

[0047] In the embodiment shown in Figure 1 , the multi-spindle drilling machine is provided with two worktables 2. Three material plates 4 are provided on each worktable 2. Two spindle mechanisms 3 are provided for each material plate 4, i.e., a total of 12 spindle mechanisms 3 are provided. Correspondingly, 12 first drive mechanisms are provided, so that the first drive mechanisms and spindle mechanisms 3 are provided in a one-to-one correspondence.

[0048] In one embodiment, as shown in FIG. 1 , the multi-axis drilling machine further includes a second driving mechanism 5 , which is configured to drive the workbench 2 to slide along the first direction Y.

[0049] In one embodiment, as shown in FIG. 1 , a plurality of workbenches 2 are provided, and the workbenches 2 are spaced apart along the second direction X.

[0050] In one embodiment, as shown in Figure 1, the machine tool 1 includes a bed 11 and a beam 12 connected to the bed 11. The worktable 2 is slidably mounted on the bed 11 along a first direction Y, and the spindle mechanism 3 is slidably mounted on the beam 12 along a second direction X, thereby realizing the installation connection between the worktable 2 and the spindle mechanism 3 and the machine tool 1.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-axis drilling machine, characterized in that: It comprises a machine tool, a workbench and a plurality of spindle mechanisms, wherein the workbench is slidably mounted on the machine tool along a first direction, and the workbench is used to carry at least one sheet; each of the spindle mechanisms is slidably mounted on the machine tool along a second direction, and every two of the spindle mechanisms are used to process the same sheet; The spindle mechanism comprises a base plate, a driving assembly, a spindle and an air flotation sleeve, the base plate is slidably mounted on the machine tool along the second direction, the driving assembly and the air flotation sleeve are respectively mounted on the base plate, an air flotation hole is arranged on the air flotation sleeve, the upper end of the spindle is connected to the driving assembly, the lower end of the spindle is arranged through the air flotation hole, and an air flotation gap is formed between the spindle and the air flotation sleeve; The driving assembly is used to drive the main shaft to move along the third direction.

2. The multi-axis drilling machine according to claim 1, characterized in that: The driving assembly comprises a linear motor and a driving plate, wherein the linear motor is mounted on the bottom plate, the driving plate is connected to the linear motor, and the linear motor is used to drive the driving plate to move along the third direction; The upper end of the main shaft is connected to the driving plate.

3. The multi-axis drilling machine according to claim 1, characterized in that: The positions of the air floating sleeve and the main shaft along the plane where the first direction and the second direction are located are adjustable.

4. The multi-axis drilling machine according to claim 3, characterized in that: The spindle mechanism further comprises an air-floating sleeve clamp, the air-floating sleeve is mounted on the air-floating sleeve clamp, and the air-floating sleeve can move relative to the air-floating sleeve clamp along a plane where the first direction and the second direction are located.

5. The multi-axis drilling machine according to claim 4, characterized in that: A plurality of screw holes are arranged on the upper peripheral edge of the air flotation sleeve, and the plurality of screw holes are used to fix the air flotation sleeve and the air flotation sleeve clamp.

6. The multi-axis drilling machine according to claim 4, characterized in that: The spindle mechanism also includes a hoisting connecting rod, which is connected between the driving assembly and the spindle.

7. The multi-axis drilling machine according to claim 6, characterized in that: The spindle mechanism further comprises a locking assembly, through which the hoisting connecting rod can form an unlocked state or a locked state with the spindle, and in the unlocked state, the spindle can follow the movement of the air floating sleeve.

8. The multi-axis drilling machine according to claim 1, characterized in that: The multi-axis drilling machine further includes a plurality of first driving mechanisms, which are arranged in one-to-one correspondence with the plurality of spindle mechanisms, and the first driving mechanisms are used to drive the corresponding spindle mechanisms to slide along the second direction.

9. The multi-axis drilling machine according to claim 1, characterized in that: The multi-axis drilling machine further comprises a second driving mechanism, and the second driving mechanism is used for driving the workbench to slide along the first direction.

10. The multi-axis drilling machine according to claim 1, characterized in that: A plurality of workbenches are provided, and the workbenches are spaced apart along the second direction.

11. The multi-axis drilling machine according to claim 1, characterized in that: The multi-axis drilling machine is provided with two workbenches, each of which is provided with three material plates, and each of which is provided with two spindle mechanisms.

12. The multi-axis drilling machine according to any one of claims 1 to 11, characterized in that: The machine tool comprises a bed and a crossbeam connected to the bed, the workbench is slidably mounted on the bed along the first direction, and the spindle mechanism is slidably mounted on the crossbeam along the second direction.

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