Main shaft assembly and circuit board processing equipment

Abstract

The utility model provides a main shaft assembly which is suitable for circuit board processing equipment and comprises a first bottom plate, a main shaft clamp, a main shaft cover and a main shaft, the main shaft clamp is installed on the first bottom plate through a connecting part, the main shaft cover is installed on the main shaft clamp, and the main shaft is arranged in an annular interval defined by the main shaft clamp and the main shaft cover; and the adjusting part is arranged on the connecting part and is used for finely adjusting the position of the main shaft relative to the first bottom plate. The utility model further provides circuit board processing equipment. According to the main shaft assembly and the circuit board processing equipment, the relative positions of the main shafts and the first bottom plate can be changed, so that the synchronous processing precision of the double main shafts is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of circuit board processing equipment, and more precisely, the present disclosure relates to a spindle assembly and a circuit board processing equipment. Background Art

[0002] Currently, single-axis processing has been achieved in circuit board processing equipment. To further improve the equipment utilization rate, multi-axis processing has gradually become the development direction. To achieve multi-axis processing at the same station, it is necessary to adjust the central position of the spindles in the X and Y directions for processing the same station. How to adjust the position of the spindles to make the central positions of multiple spindles within a preset range has become a technical problem that must be solved for the circuit board processing equipment to improve efficiency. Summary of the Utility Model

[0003] The present disclosure provides a spindle assembly and a circuit board processing equipment to solve the problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, there is provided a spindle assembly applicable to a circuit board processing equipment, including: a first base plate, a spindle clamp, a spindle cover, and a spindle. The spindle clamp is installed on the first base plate through a connecting portion, the spindle cover is installed on the spindle clamp, and the spindle is disposed within an annular interval defined by the spindle clamp and the spindle cover; an adjusting portion disposed on the connecting portion for finely adjusting the position of the spindle relative to the first base plate.

[0005] In some alternative embodiments of the present disclosure, the connecting portion includes a first connecting member and a second connecting member. The first connecting member is disposed on the first base plate, the second connecting member is disposed on the spindle clamp, and the first connecting member and the second connecting member are assembled to form a surface contact.

[0006] In some alternative embodiments of the present disclosure, the first connecting member includes a first groove, the second connecting member includes a second through hole, the first groove and the second through hole communicate with each other, and the adjusting portion penetrates through the second through hole and extends into the first groove.

[0007] In some alternative embodiments of the present disclosure, the second connecting member includes a limiting portion, and the limiting portion further includes a central opening. The limiting portion is located at an end of the second through hole away from the first groove, and the limiting portion is used to limit the movement of the adjusting portion in the axial direction within the second through hole and the first groove.

[0008] In some alternative embodiments of the present disclosure, the spindle clamp is installed on the first base plate through two connecting portions on both sides of the spindle. The first groove of each connecting portion is circular, the second through holes are all waist-shaped holes, and the extending directions of the long sides of the cross-sections of the second through holes on both sides of the spindle are perpendicular to each other.

[0009] In some alternative embodiments of the present disclosure, the adjustment part rotates within the first groove and the second through hole to finely adjust the relative positions of the first connecting member and the second connecting member; the adjustment part includes any one of the following: an eccentric component, an inclined plane component, and a threaded component.

[0010] In some alternative embodiments of the present disclosure, the connecting part further includes a locking member that passes through the first connecting member and the second connecting member and is used to switch the first connecting member and the second connecting member between a locked state and a released state.

[0011] In some alternative embodiments of the present disclosure, the main shaft assembly further includes a chip suction hood guide rod that penetrates through the first connecting member and the second connecting member.

[0012] In some alternative embodiments of the present disclosure, a plurality of second grooves are provided on the inner wall of the annular interval, and a plurality of support members are provided in each second groove. Each support member protrudes toward the central axis direction of the annular interval, and its top abuts against the outer side wall of the main shaft; the support member is an insulating member.

[0013] According to a second aspect of the present disclosure, there is provided a circuit board processing device, including: a base, a cross beam, a main shaft device, and a workbench; the workbench is arranged on the base and moves along a second direction, and the cross beam is erected above the workbench. At least one main shaft device moving along a first direction is slidably connected to the cross beam; the main shaft device includes a second bottom plate and a main shaft part, and the second bottom plate drives the main shaft part to move along the first direction; the main shaft part includes a main shaft assembly and a driving part. A guide rail is provided on the second bottom plate, and the driving part drives the main shaft assembly to move along a third direction on the guide rail; the main shaft assembly includes: a first bottom plate, a main shaft clamp, a main shaft cover, and a main shaft. The main shaft clamp is installed on the first bottom plate through a connecting part, the main shaft cover is installed on the main shaft clamp, and the main shaft is arranged in the annular interval surrounded by the main shaft clamp and the main shaft cover; an adjustment part is arranged on the connecting part, and the adjustment part drives the main shaft, the main shaft clamp, and the main shaft cover to move along the first direction and / or the second direction to finely adjust the position of the main shaft relative to the first bottom plate; the first direction, the second direction, and the third direction are perpendicular to each other.

[0014] In some alternative embodiments of the present disclosure, the circuit board processing device includes the above-mentioned main shaft assembly of the present disclosure.

[0015] The above-mentioned main shaft assembly and circuit board processing device of the present disclosure have the following technical effects: (1) By means of the adjustment part, the relative position between the main shaft and the first bottom plate is simply and efficiently changed, so that the central position of the main shaft is adjusted to a preset range. (2) The two adjustment parts can achieve adjustments in different directions, providing the possibility of adjusting the central position of the main shaft in the first direction and / or the second direction. (3) By arranging the adjustment part at the connecting part between the main shaft clamp and the bottom plate, on the one hand, the cost is low, and on the other hand, it is convenient for operation and maintenance. The central position of the main shaft can be detected and adjusted multiple times, thereby improving the double-axis synchronous processing accuracy of the circuit board processing device.

[0016] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] Figure 1 is a schematic diagram of a partial structure of a circuit board processing device provided by an embodiment of the present disclosure;

[0019] Figure 2 is a schematic diagram of a partial structure of a circuit board processing device provided by an embodiment of the present disclosure;

[0020] Figure 3 is a schematic diagram of a partial structure of a second spindle device provided by an embodiment of the present disclosure;

[0021] Figure 4 is a schematic diagram of a partial structure of a spindle assembly provided by an embodiment of the present disclosure;

[0022] Figure 5 is a schematic diagram of a partial structure of a spindle assembly provided by an embodiment of the present disclosure;

[0023] Figure 6 is a schematic diagram of a partial structure of a spindle assembly provided by an embodiment of the present disclosure;

[0024] Figure 7 is a schematic diagram of a partial structure of a spindle assembly provided by an embodiment of the present disclosure;

[0025] Figure 8 is a schematic diagram of a partial structure of a spindle assembly provided by an embodiment of the present disclosure.

[0026] Figures 1 to 8The one-to-one correspondence between the names of the components and the reference numerals in the figures is as follows: 10, processing unit; 20, workbench; 30, crossbeam; 40, base; 11, first spindle device; 12, second spindle device; 13, second base plate; 14, spindle unit; 110, first spindle assembly; 1100, first spindle; 120, second spindle assembly; 1200, second spindle; 1201, first base plate; 1202, spindle clamp; 1203, spindle cover; 1204, connecting part; 1205, annular interval; 1206, adjusting part; 1207, locking part; 1208, chip suction hood guide rod; 12041, first connecting piece; 12042, second connecting piece; 12043, first groove; 12044, second through hole; 12051, second groove; 12052, support piece; 12071, through hole; 12081, chip suction hood; 12082, through hole; 21, processing position; 22, circuit board; 23, cutting tool. Detailed Description of the Invention

[0027] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present disclosure.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present disclosure, its application or use. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] The specific embodiments of the present disclosure will now be described with reference to the accompanying drawings. In this document, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationships between relevant parts, rather than defining the absolute positions of these relevant parts. In this document, "first", "second", "third", "fourth", etc. are only used for mutual distinction, rather than indicating importance, order, and the premise of mutual existence, etc. In this document, "equal", "same", "aligned", "vertical", "horizontal", "above", "consistent", "synchronous", "simultaneous", "sequentially", etc. are not strict mathematical and / or geometric limitations, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0030] The circuit board processing equipment in the present disclosure includes: a base, a cross beam, a spindle device, a workbench, etc. The workbench is arranged on the base and moves along the second direction. The cross beam is erected above the workbench, and at least one spindle device moving along the first direction is slidably connected to the cross beam. The spindle device moves along the third direction to process the circuit board carried on the workbench. The first direction, the second direction, and the third direction are perpendicular to each other. In the context embodiments of the present disclosure, the circuit board processing equipment can be implemented as a drilling equipment, a shaping equipment, a routing machine equipment, a drilling and routing integrated equipment, etc., which is not limited herein. In the context embodiments of the present disclosure, the number of spindle devices of the circuit board processing equipment can be one, two, three, six, ten, twelve, etc., which is not limited herein.

[0031] The spindle device of the present disclosure includes a second base plate and a spindle part. The second base plate drives the spindle part to move along the first direction. The spindle part includes a spindle assembly and a driving part. A guide rail is arranged on the second base plate, and the driving part drives the spindle assembly to move along the third direction on the guide rail to process the circuit board carried on the workbench. The spindle assembly includes: a first base plate, a spindle clamp, a spindle cover, and an adjustment part. The spindle clamp is installed on the first base plate through a connecting part, the spindle cover is installed on the spindle clamp, and the spindle is arranged in the annular interval surrounded by the spindle clamp and the spindle cover. The adjustment part is arranged on the connecting part and drives the spindle, the spindle clamp, and the spindle cover to move along the first direction and / or the second direction to finely adjust the position of the spindle relative to the first base plate. The first direction, the second direction, and the third direction are perpendicular to each other. In the present disclosure, each spindle clamps a tool at the lower end, and the spindle assembly clamps the tool and reciprocates in the third direction to realize the switching of multiple processing points. The tool rotates at a high speed to realize the processing of a single processing point on the circuit board. Finely adjusting the position of the spindle and slightly moving relative to the circuit board changes the central position of the spindle. Finely adjusting the central positions of multiple spindles enables the central positions of multiple spindles to be within a preset range, thereby improving the precision of synchronous processing of multiple spindles.

[0032] To adjust the central position of the spindle and enable the central positions of multiple spindles for processing circuit boards at the same station to be within a preset range. The present disclosure provides a spindle assembly applicable to circuit board processing equipment, including: a first base plate, a spindle clamp, a spindle cover, and a spindle. The spindle clamp is installed on the first base plate through a connecting part, the spindle cover is installed on the spindle clamp, and the spindle is arranged in the annular interval surrounded by the spindle clamp and the spindle cover. The adjustment part is arranged on the connecting part and is used to finely adjust the position of the spindle relative to the first base plate. This spindle assembly can finely adjust the central position of the spindle to adjust the central position of the spindle to within a preset range, thereby improving the processing precision of the spindle.

[0033] In some embodiments of the present disclosure, the connecting portion includes a first connecting member and a second connecting member. The first connecting member is disposed on the first base plate, and the second connecting member is disposed on the spindle chuck. The first connecting member and the second connecting member are assembled and cooperated to form a surface contact. The connecting portion includes two parts: a first connecting member and a second connecting member; the first connecting member is disposed on the first base plate and integrally formed with the first base plate; the second connecting member is disposed on the spindle chuck and integrally formed with the spindle chuck. The first connecting member and the second connecting member are assembled and cooperated to fix the spindle chuck on the first base plate. The assembly here can be in the form of snap connection, stacking, etc., which is not limited herein. No matter which method, the first connecting member and the second connecting member are assembled to form at least a part of the surface contact. The spindle chuck is fixed on the first base plate by a surface contact assembly method, which improves the stability of the spindle chuck and is beneficial to assembly and maintenance.

[0034] In some embodiments of the present disclosure, the spindle assembly further includes a locking member. The locking member passes through the first connecting member and the second connecting member and is used to switch the first connecting member and the second connecting member between a locked state and a released state. The locking member includes a bolt. Through holes communicating with each other are provided on the first connecting member and the second connecting member. Internal threads are provided on the inner wall of the through holes. There is a gap between the bolt and the through holes to accommodate the relative displacement of the first connecting member and the second connecting member, thereby finely adjusting the position of the spindle. The bolt and the through holes cooperate to lock the first connecting member and the second connecting member. When it is necessary to finely adjust the position of the spindle, the bolt is adjusted, and the first connecting member and the second connecting member are in a released state, and the central position of the spindle is adjusted to a preset range. After the adjustment is completed, the bolt is adjusted again, and the first connecting member and the second connecting member are in a locked state. The locking member locks the first connecting member and the second connecting member, which can prevent the change of the central position of the spindle from being affected by vibration and machining.

[0035] In some embodiments of the present disclosure, the first connecting member includes a first groove, and the second connecting member includes a second through hole. The first groove and the second through hole communicate with each other. The adjusting portion passes through the second through hole and extends into the first groove. The first groove and the second through hole communicate with each other so that the adjusting portion passes through the second through hole and extends into the first groove. The adjusting portion rotates in the communicating first groove and second through hole, prompting the relative displacement of the first connecting member and the second connecting member, so as to finely adjust the relative position of the first connecting member and the second connecting member, thereby finely adjusting the positions of the spindle, the spindle chuck, and the spindle cover relative to the first base plate. In some embodiments of the present disclosure, the adjusting portion can be any one of the following: an eccentric assembly, an inclined plane assembly, a threaded assembly. In some preferred embodiments, the adjusting portion is an eccentric assembly, which can rotate conveniently and flexibly in the first groove and the second through hole to achieve the purpose of finely adjusting the position of the spindle.

[0036] In some embodiments of the present disclosure, the second connecting member is located above the first connecting member, and the second through hole is located above the first groove. The second connecting member includes a limiting portion, and the limiting portion is located at one end of the second through hole away from the first groove, that is, in the height direction, the limiting portion is located at the top end of the second through hole, and the first groove is located at the bottom end of the second through hole. The limiting portion and the first groove enclose a space in the second through hole, and the adjusting portion is disposed in this space. The limiting portion is used to limit the movement of the adjusting portion in the axial direction within the second through hole and the first groove. The limiting portion further includes a central opening, and an operating tool passes through the central opening of the limiting portion to abut against the adjusting portion to control the rotational movement of the adjusting portion within the second through hole and the first groove. As a preferred embodiment, the limiting portion is integrally formed with the second connecting member, and a circular hole is provided in the central region of the limiting portion to facilitate the operating tool to control the rotational movement of the adjusting portion.

[0037] In some embodiments of the present disclosure, the spindle clamp is mounted on the first base plate through two connecting portions on both sides of the spindle. The first groove of each connecting portion is circular, and the second through hole is a waist-shaped hole. The extending directions of the long sides of the cross-sections of the second through holes on both sides of the spindle are perpendicular to each other. The spindle clamp is a U-shaped structure, semi-circularly surrounding the rear side of the spindle, and the spindle cover semi-circularly surrounds the front side of the spindle. The spindle clamp and the spindle cover are assembled and cooperated to jointly surround and fix the spindle. To better fix the spindle and the spindle clamp to the first base plate, the spindle clamp is provided with one connecting portion on each of the left and right sides in the first direction, and the spindle clamp is mounted on the first base plate through the two connecting portions. In some preferred embodiments of the present disclosure, the first groove of each connecting portion is circular, and the second through hole is a waist-shaped hole. The extending directions of the long sides of the cross-sections of the second through holes on both sides of the spindle are perpendicular to each other. The cross-section of each waist-shaped hole includes a long side and a short side, and its long side extends in a predetermined direction. The second through hole of the connecting portion on the left side of the spindle is a waist-shaped hole, and the long side of the cross-section of this waist-shaped hole extends in the second direction; the second through hole of the connecting portion on the right side of the spindle is a waist-shaped hole, and the long side of the cross-section of this waist-shaped hole extends in the first direction, and the first direction is perpendicular to the second direction. The adjusting portion rotates within the waist-shaped hole extending in the first direction, driving the corresponding first connecting member and the second connecting member to undergo relative displacement in the first direction, thereby changing the relative positions of the spindle, the spindle clamp, the spindle cover and the first base plate in the first direction to finely adjust the central position of the spindle in the first direction. The adjusting portion rotates within the waist-shaped hole extending in the second direction, driving the corresponding first connecting member and the second connecting member to undergo relative displacement in the second direction, thereby changing the relative positions of the spindle, the spindle clamp, the spindle cover and the first base plate in the second direction to finely adjust the central position of the spindle in the second direction. In the actual application process, the two adjusting portions on both sides of the spindle can be adjusted simultaneously, or one adjusting portion can be adjusted to adjust the central position of the spindle within a preset range. In the above and below embodiments of the present disclosure, both sides of the spindle refer to both sides along the first direction, and the two connecting portions and the spindle are arranged as a whole along the first direction.

[0038] In some embodiments of the present disclosure, the spindle assembly further includes a chip suction hood guide rod that penetrates through the first connecting member and the second connecting member. A chip suction hood is provided at the bottom end of the spindle, and the tool passes through a through hole in the middle of the chip suction hood. The chip suction hood is used to suck the debris during the process of the tool machining the circuit board. The chip suction hood guide rod fixes the chip suction hood on the first bottom plate. On both sides of the spindle, a dust suction hood guide rod is provided respectively. Each chip suction hood guide rod extends along the third direction and penetrates through the connecting portion. On the second connecting member, the through hole through which the chip suction hood guide rod passes is in the same plane as the second through hole and the through hole.

[0039] In some embodiments of the present disclosure, the spindle clamp and the spindle cover jointly enclose an annular interval. A plurality of second grooves are provided on the inner wall of the annular interval. A plurality of support members are provided in each second groove. Each support member protrudes towards the central axis direction of the annular interval, and its top abuts against the outer wall of the spindle; the support member is an insulating member. The spindle is fixed to the spindle clamp and the spindle cover. The spindle clamp is fixed to the first bottom plate through the connecting portion, and the spindle cover is fixed to the spindle clamp. The spindle clamp and the spindle cover enclose an annular interval. The annular interval is a tubular structure. The inner wall of the annular interval is also the inner wall of the spindle clamp and the spindle cover. A plurality of second grooves extending along the third direction are formed on the inner wall. A plurality of support members are provided in each second groove. The support members protrude towards the central axis direction of the annular interval, and the top of the support member abuts against the outer wall of the spindle. On the one hand, the support member can abut against the spindle to support the spindle circumferentially and prevent the position and vibration of the spindle; on the other hand, the support member can also adjust the perpendicularity of the spindle. When the perpendicularity of the spindle does not meet the predetermined range, open the spindle cover and add a gasket between the corresponding support member and the outer wall of the spindle, so as to change the perpendicularity of the spindle. In some preferred embodiments of the present disclosure, the support member is an insulating member, and the support member insulates between the spindle and the spindle clamp, which can ensure the electrical detection of the tool on the spindle during the process of machining the circuit board.

[0040] A circuit board processing device provided by the present disclosure includes: a base, a cross beam, a spindle device, and a workbench; the workbench is arranged on the base and moves along the second direction. The cross beam is erected above the workbench, and at least one spindle device moving along the first direction is slidably connected to the cross beam; the spindle device includes a second bottom plate and a spindle part. The second bottom plate drives the spindle part to move along the first direction; the spindle part includes a spindle assembly and a driving part. A guide rail is provided on the second bottom plate, and the driving part drives the spindle assembly to move along the third direction on the guide rail; the spindle assembly includes: a first bottom plate, a spindle clamp, a spindle cover, and a spindle. The spindle clamp is installed on the first bottom plate through a connecting portion, the spindle cover is installed on the spindle clamp, and the spindle is arranged in the annular interval enclosed by the spindle clamp and the spindle cover; an adjusting part is arranged on the connecting portion, and the adjusting part drives the spindle, the spindle clamp, and the spindle cover to move along the first direction and / or the second direction to finely adjust the position of the spindle relative to the first bottom plate; the first direction, the second direction, and the third direction are perpendicular to each other.

[0041] In the context of the embodiments of the present disclosure, when the perpendicularity of the main shaft is within a preset range, the central coordinates of the main shaft are used to determine the central position of the main shaft. Specifically, the central coordinates of the main shaft can be detected and determined by detecting the tip of the cutting tool clamped at the bottom end of the main shaft, and can be detected by detection tools such as a tool setter or a tool inspection component. At the same time, when the central coordinates of the main shaft are not within the preset range, the workbench and the main shaft move relative to each other to change the central coordinates of the main shaft in the second direction; the main shaft slides along the crossbeam to change the central coordinates of the main shaft in the first direction; thus realizing the adjustment of the central coordinates of the main shaft. During synchronous machining of two main shafts, taking the central coordinates of one main shaft as a reference, an adjustment part installed on the other main shaft is used to finely adjust the central coordinates of the other main shaft, so that the central coordinates of the two main shafts are spaced apart by a predetermined distance in the first direction, and the central coordinates in the second direction are basically the same, so as to improve the accuracy of synchronous machining of the two main shafts.

[0042] In the context of the embodiments of the present disclosure, the central position of the main shaft is finely adjusted. Here, the fine adjustment refers to making a fine adjustment according to the deviation between the actual central position and the theoretical central position. Its adjustment range is usually at the micron level or the millimeter level. Due to the high assembly and machining accuracy of the circuit board processing equipment, the deviation that actually needs to be adjusted by the adjustment part may be 20 microns, 10 microns, or even a few microns. For this order-of-magnitude fine adjustment, manual adjustment can effectively reduce costs.

[0043] Embodiment 1

[0044] In this embodiment, taking a circuit board processing equipment as a twelve-axis drilling equipment, and taking the synchronous drilling of two main shaft assemblies for a circuit board at one station as an example, the structure of the main shaft assembly and how to adjust the central position of the main shaft are described in detail.

[0045] In this embodiment, as Figure 1 , Figure 2 shown, the circuit board processing equipment is a 12-axis drilling equipment. Every two main shaft devices 11 and 12 form a processing part 10, and there are 6 identical processing parts 10 in the first direction. Six processing positions 21 are arranged on the workbench 20, and each processing position 21 carries a circuit board 22. Each processing part 10 corresponds to each processing position 21 one by one. As Figure 2 shown, each processing part 10 includes a first main shaft device 11 and a second main shaft device 12, and synchronously processes a circuit board 22 at the corresponding processing position 21. To improve efficiency, the 6 processing parts 10 move synchronously in the first direction, and the workbench 20 moves as a whole in the second direction to synchronously process the 6 circuit boards 22 on the workbench 20.

[0046] As Figure 2As shown, in each processing unit 10, the first spindle device 11 includes a first spindle assembly 110, and the first spindle assembly 110 includes a first spindle 1100; the second spindle device 12 includes a second spindle assembly 120, and the second spindle assembly 120 includes a second spindle 1200; tools 23 for processing circuit boards are clamped at the bottom ends of both the first spindle assembly 110 and the second spindle assembly 120. Taking the center position of the first spindle 1100 as a reference, the center position of the second spindle 1200 is finely adjusted to adjust the center position of the second spindle within a preset range, so as to reduce the center position deviation between the first spindle 1100 and the second spindle 1200, improve the precision of synchronous processing of the first spindle 1100 and the second spindle 1200, and improve the precision of processing while improving the processing efficiency. In this embodiment, the center position of the spindle is detected by detection tools such as a tool setting gauge and a tool inspection assembly, and no limitation is made here.

[0047] In this embodiment, as Figures 3 to 8 shown, the second spindle assembly 120 includes: a first base plate 1201, a spindle clamp 1202, a spindle cover 1203, and a second spindle 1200. The spindle clamp 1202 is installed on the first base plate 1201 through a connecting portion 1204. The spindle cover 1203 is installed on the spindle clamp 1202. The second spindle 1200 is disposed in an annular interval 1205 defined by the spindle clamp 1202 and the spindle cover 1203; an adjusting portion 1206 is disposed on the connecting portion 1204 and is used for finely adjusting the position of the second spindle 1200 relative to the first base plate 1201.

[0048] The connecting portion 1204 includes a first connecting member 12041 and a second connecting member 12042. The first connecting member 12041 is integrally formed with the first base plate 1201 and extends towards the spindle clamp 1202; the second connecting member 12042 is integrally formed with the spindle clamp 1202 and extends towards the first base plate 1201. The first connecting member 12041 and the second connecting member 12042 are assembled to form a surface contact, and the second connecting member 12042 is located above the first connecting member 12041.

[0049] The first connecting member 12041 is provided with a first groove 12043, and the second connecting member 12042 is provided with a second through hole 12044. The first groove 12043 and the second through hole 12044 communicate with each other. The adjusting portion 1206 penetrates through the second through hole 12044 and extends into the first groove 12043. On the second connecting member 12042, a limiting portion is provided at the top end of the second through hole 12044, and the bottom end communicates with the first groove 12043. The limiting portion restricts the axial movement of the adjusting portion 1206 within the interval defined by the second through hole 12044 and the first groove 12043. The limiting portion further includes a central opening, and an operating tool passes through the central opening and abuts against the adjusting portion 1206 to control the rotational movement of the adjusting portion 1206 within the interval defined by the second through hole 12044 and the first groove 12043. The outer contour of the adjusting portion 1206 presses against the second connecting member, causing relative displacement between the first connecting member 12041 and the second connecting member 12042, thereby achieving the purpose of finely adjusting the position of the second main shaft 1200 relative to the first base plate 1201. In this embodiment, the adjusting portion 1206 is an eccentric assembly.

[0050] The structure of the eccentric assembly includes a rotating member and an eccentric member. The rotating member penetrates through the second through hole 12044 and extends into the first groove 12043, and abuts against the bottom wall of the first groove 12043. In this embodiment, in the third direction, the second through hole 12044 is located above the first groove 12043, and the outer contour of the eccentric member abuts against the inner wall of the second through hole 12044. The second connecting member 12042 further includes a limiting portion. The limiting portion and the first groove 12043 are located at both ends of the second through hole 12044. The limiting portion is used to restrict the axial movement of the adjusting portion within the second through hole and the first groove to ensure that the adjusting portion 1206 rotates in the radial direction within the space of the second through hole and the first groove. The limiting portion is provided with a central opening, and the central opening facilitates the insertion of the operating tool and abuts against the rotating member, thereby controlling the rotation of the rotating member.

[0051] In this embodiment, when manually adjusting the eccentric component, a technician uses an operating tool to extend through the central opening into the second through-hole and abut against the rotating member. The rotating member is manually adjusted by the operating tool, and the rotating member drives the eccentric member to rotate. The outer contour of the eccentric member presses against the inner wall of the second through-hole 12044, causing the first groove 12043 and the second through-hole 12044 to be slightly misaligned, that is, the first connecting member 12041 and the second connecting member 12042 undergo relative displacement. Since the first connecting member 12041 is integrally formed with the first base plate 1201, therefore, the spindle cover 1202 integrally formed with the second connecting member 12042 undergoes relative displacement with the first base plate 1201. The second spindle 1200 is fixed on the spindle clamp 1202 and the spindle cover 1203, and the relative displacement of the spindle cover 1202 drives the relative position of the second spindle 1200. The displacement direction and displacement distance depend on the adjustment action of the eccentric component, and the technician reasonably adjusts the adjustment portion 1206 according to the deviation of the central position of the second spindle.

[0052] As Figure 5 , Figure 6 , Figure 8 shown, two connecting portions 1204 are provided on the left and right sides of the second spindle 1200 in the first direction. Each connecting portion 1204 includes a first connecting member 12041, a second connecting member 12042, a first groove 12043, and a second through-hole 12044. The adjustment portion 1206 is provided on the connecting member 1204. The first groove 12043 and the second through-hole 12044 on the same side of the second spindle 1200 are communicated. The first groove 12043 is circular, and the second through-holes 12044 are all waist-shaped holes. The cross-sectional area of the waist-shaped hole is larger than the cross-sectional area of the circle. In this embodiment, the waist-shaped hole is an elliptical annular hole. The elliptical cross-section of the waist-shaped hole includes a long side and a short side, and its long side extends in a predetermined direction. The extending direction of the waist-shaped hole refers to the extending direction of the long side of its cross-section. The extending directions of the waist-shaped holes on both sides of the second spindle 1200 are perpendicular to each other. As Figure 6 and Figure 8 shown, specifically, the second through-hole 12044 of the connecting portion 1204 on the left side of the second spindle 1200 is a waist-shaped hole, and the long side of the cross-section of this waist-shaped hole extends in the second direction; the second through-hole 12044 of the connecting portion 1204 on the right side of the second spindle 1200 is a waist-shaped hole, and the long side of the cross-section of this waist-shaped hole extends in the first direction, and the first direction is perpendicular to the second direction. As Figure 6 and Figure 8As shown, the adjusting portion 1206 on the right side of the second main shaft 1200 rotates in the waist-shaped hole 12044 extending in the first direction, driving the corresponding first connecting member 12041 and second connecting member 12042 to have a relative displacement in the first direction, thereby changing the relative positions of the second main shaft 1200, the spindle chuck 1202, the spindle cover 1203 and the first base plate 1201 in the first direction, so as to finely adjust the central position of the second main shaft 1200 in the first direction. The adjusting portion 1206 on the left side of the second main shaft 1200 rotates in the waist-shaped hole 12044 extending in the second direction, driving the corresponding first connecting member 12041 and second connecting member 12042 to have a relative displacement in the second direction, thereby changing the relative positions of the second main shaft 1200, the spindle chuck 1202, the spindle cover 1203 and the first base plate 1201 in the second direction, so as to finely adjust the central position of the second main shaft 1200 in the second direction. In the actual application process, the two adjusting portions 1206 on both sides of the second main shaft 1200 can be adjusted simultaneously, or one adjusting portion 1206 can be adjusted to adjust the central position of the second main shaft 1200 within a preset range. In this embodiment, the two adjusting portions 1206 on both sides of the second main shaft 1200 are manually adjusted by technicians. An operating tool is used to manually adjust the position of the eccentric assembly, thereby driving the adjusting portion 1206 to rotate in the connected first groove 12043 and second through hole 12044.

[0053] A locking member 1207 is further provided on the connecting portion 1204. The locking member 1207 connects the first connecting member 12041 and the second connecting member 12042 through a through hole 12071, and is used to switch the first connecting member 12041 and the second connecting member 12042 between a locked state and a released state. In this embodiment, the locking member 1207 is a bolt. Communication through holes 12071 are provided on the first connecting member 12041 and the second connecting member 12042. Internal threads are provided on the inner wall of the through hole 12071. There is a gap between the bolt and the through hole 12071 to accommodate the relative displacement of the first connecting member 12041 and the second connecting member 12042, so as to finely adjust the position of the second main shaft 1200. The bolt and the through hole are in a locking fit to lock the first connecting member and the second connecting member. When it is necessary to finely adjust the position of the main shaft, the bolt is adjusted to be loosened, and the first connecting member 12041 and the second connecting member 12042 are in a released state. The central position of the second main shaft 1200 is adjusted to a preset range. After the adjustment is completed, the bolt is adjusted again to be tightened, and the first connecting member 12041 and the second connecting member 12042 are in a locked state. The locking member 1207 locks and releases the first connecting member 12041 and the second connecting member 12042, and the adjusting portion 1206 can be adjusted according to the central position of the second main shaft 1200 to adjust the central position of the second main shaft 1200 to a preset range, improving the accuracy of double main shaft machining. In this embodiment, there are multiple groups of the locking member 1207 and the through hole 12071. At least two groups of the locking member 1207 and the through hole 12071 are provided on each connecting portion 1204 to stably and reliably lock the first connecting member 12041 and the second connecting member 12042, preventing uncontrollable displacement of the two caused by vibration, thereby affecting the machining accuracy.

[0054] In this embodiment, the second main shaft assembly 120 further includes a chip suction hood guide rod 1208. The chip suction hood guide rod 1208 penetrates through the first connecting member 12041 and the second connecting member 12042. A chip suction hood 12081 is provided at the bottom end of the second main shaft 1200. The tool 23 passes through a through hole in the middle of the chip suction hood 12081. The chip suction hood 12081 is used to suck chips during the process of the tool 23 machining the circuit board. The chip suction hood guide rod 1208 fixes the chip suction hood 12081 on the first bottom plate 1201. On both sides of the second main shaft 1200, there is one chip suction hood guide rod 1208 each. Each chip suction hood guide rod 1208 extends along the third direction and penetrates through the connecting portion 1204. On the second connecting member 12042, the chip suction hood guide rod 1208 passes through a through hole 12082. As Figure 8 shown, the through hole 12082, the second through hole 12044, and the through hole 12071 are in the same plane.

[0055] In this embodiment, the spindle clamp 1202 and the spindle cover 1203 jointly enclose an annular interval 1205. A plurality of second grooves 12051 are provided on the inner wall of the annular interval 1205. A plurality of support members 12052 are provided in each second groove 12051. Each support member 12052 protrudes towards the central axis direction of the annular interval 1205, and its top abuts against the outer wall of the second spindle 1200; the support member 12052 is an insulating member. The second spindle 1200 is fixed to the spindle clamp 1202 and the spindle cover 1203. The spindle clamp 1202 is fixedly installed on the first base plate 1201 through the connecting portion 1204, and the spindle cover 1203 is fixedly installed on the spindle clamp 1202. The spindle clamp 1202 and the spindle cover 1203 enclose an annular interval 1205. The inner wall of the annular interval 1205 is also the inner wall of the spindle clamp 1202 and the spindle cover 1203. A plurality of second grooves 12051 extending in the third direction are formed on the inner wall. A plurality of support members 12052 are provided in each second groove 12051. The support member 12052 protrudes towards the central axis direction of the annular interval 1205, and the top of the support member 12052 abuts against the outer wall of the spindle. On the one hand, the support member 12052 can abut against the second spindle 1200 to support the second spindle 1200 circumferentially and prevent the second spindle 1200 from vibrating; on the other hand, the support member 12052 can also adjust the verticality of the spindle. When the verticality of the spindle does not meet the predetermined range, the spindle cover 1203 is opened, and a gasket is added between the support member 12052 and the outer wall of the second spindle 1200 in the second groove 12051 in the corresponding direction, so as to change the verticality of the second spindle 1200. In some preferred embodiments of the present disclosure, the support member 12052 is an insulating member, and the support member 12052 insulates between the second spindle 1200 and the spindle clamp 1202 and the spindle cover 1203, which can ensure the electrical detection of the cutter of the spindle during the process of processing the circuit board.

[0056] Embodiment 2

[0057] Taking the circuit board processing equipment with twelve spindle devices and two spindle components synchronously drilling and processing the circuit board at one station as an example, this embodiment details the structure of the circuit board processing equipment and how to adjust the central position of the spindle.

[0058] The circuit board processing equipment of this embodiment, as Figure 1 shown, includes: a base 40, a cross beam 30, a processing unit 10, and a workbench 20; the workbench 20 is arranged on the base 40 and moves along the second direction, and the cross beam 30 is erected above the workbench 20. Six processing units 10 that slide along the first direction are connected to the cross beam 30. As Figure 2 、 Figure 3As shown, each processing unit 10 includes two adjacent spindle devices 11 and 12. Among the 12 spindle devices, each of the 6 spindle devices 12 includes a second base plate 13 and a spindle portion 14. The second base plate 13 is connected to the cross beam 30 through sliders and slide rails, and the second base plate 13 drives the spindle portion 14 to move along the first direction on the cross beam 30. In this embodiment, the difference between two adjacent spindle devices 11 and 12 is that the spindle device 12 is provided with an adjustment portion, while the spindle device 11 is not provided with an adjustment portion. When a processing unit 10 corresponds to a processing position 21 on a workbench 20, the two spindle devices 11 and 12 of this processing unit 10 synchronously process the circuit board 12 at the same processing position 21. The spindle device 11 detects its central position through a tool setter, and uses the workbench 20 and the cross beam 30 to adjust the central position of the spindle device 11. First, adjust the central position of the spindle device 11. Taking the central position of the spindle device 11 as a reference, adjust the adjustment portion 1206 of the spindle device 12 to finely adjust the central position of the spindle device 12. In the first direction, make the central position of the spindle device 12 be spaced apart from the spindle device 11 by a predetermined distance, and in the second direction, make the central position of the spindle 12 be basically consistent with the central position of the spindle device 11. Here, being basically consistent means that the coordinates of the two are within a preset error range.

[0059] As Figure 3 shown, in each spindle device 12, the spindle portion 14 includes a second spindle assembly 120 and a driving portion. A guide rail is provided on the second base plate 13, and the driving portion drives the second spindle assembly 120 to move along the third direction on the guide rail; the driving portion is a driving mechanism for the second spindle assembly 120 to move along the guide rail on the second base plate 13 in the third direction.

[0060] The second spindle assembly 120 includes: a first base plate 1201, a spindle chuck 1202, a spindle cover 1203, and a second spindle 1200. The spindle chuck 1202 is mounted on the first base plate 1201 through a connecting portion 1204. The spindle cover 1203 is mounted on the spindle chuck 1202. The second spindle 1200 is disposed within an annular interval defined by the spindle chuck 1202 and the spindle cover 1203. The cross-sections of the spindle chuck 1202 and the spindle cover 1203 are circular ring structures. The spindle cover 1203 is fixed to the spindle chuck 1202 by screws. The spindle cover 1203 is provided to be detachable from the spindle chuck 1202. On the one hand, it is convenient to maintain the second spindle 1200. On the other hand, the perpendicularity of the second spindle 1200 can be adjusted within a preset range. The spindle chuck 1202 and the spindle cover 1203 form a tubular structure and are sleeved outside the second spindle 1200. The second spindle 1200 is fixedly mounted on the spindle chuck 1202 and the spindle cover 1203. The spindle chuck 1202 and the spindle cover 1203 are fixedly mounted on the first base plate 1201 through the connecting portion 1204. In the upper and lower embodiments of the present disclosure, the annular interval 1205 is formed by enclosing a tubular structure, and the second spindle 1200 passes through the tubular structure.

[0061] As Figures 3 to 8 shown, an adjusting portion 1206 is disposed on the connecting portion 1204. The connecting portion 1204 includes a first connecting member 12041, a second connecting member 12042, a first groove 12043 on the first connecting member 12041, and a second through hole 12044 on the second connecting member 12042. The first groove 12043 communicates with the second through hole 12044. The adjusting portion 1206 rotates within the communicated first groove 12043 and second through hole 12044. A technician manually adjusts the adjusting portion 1206, and the adjusting portion 1206 drives the second spindle 1200, the spindle chuck 1202, and the spindle cover 1203 to move in a first direction and / or a second direction to finely adjust the position of the second spindle 1200 relative to the first base plate 1201; the first direction, the second direction, and the third direction are perpendicular to each other.

[0062] The structure of the connecting portion 1204 is the same as that in the first embodiment and will not be described herein again. In this embodiment, the adjusting portion 1206 is an inclined plane assembly, and a circumferential inclined plane is provided on the inclined plane assembly. When adjusting the adjusting portion 1206, the inclined plane assembly moves in the third direction within the connected first groove 12043 and the second through hole 12044, squeezing the side walls of the first groove 12043 and the second through hole 12044. The inclined plane causes the squeezing forces received by the side walls of the first groove 12043 and the second through hole 12044 to be different, resulting in a relative displacement between the first connecting member 12041 and the second connecting member 12042. Thereby driving the second main shaft 1200, the spindle clamp 1202, and the spindle cover 1203 to move in the first direction and / or the second direction. Similar to the first embodiment, a connecting portion 1204 is provided on each side of the second main shaft 1200, and each connecting portion 1204 is configured with an adjusting portion 1206. The adjusting portions 1206 on both sides are inclined plane assemblies, but the inclined planes of the inclined plane assemblies face different directions. The inclined plane of the left inclined plane assembly faces the second direction, and the inclined plane of the right inclined plane assembly faces the first direction. Technicians adjust the two inclined plane assemblies to drive the second main shaft 1200 to move in the first direction and / or the second direction, where the first direction and the second direction are perpendicular to each other.

[0063] In this embodiment, the structures such as the connecting portion, the spindle clamp, the spindle cover, the annular interval, and the chip suction hood guide rod are the same as those in the first embodiment and will not be described herein again. During the actual application process, before the double-spindle synchronous machining of the circuit board processing equipment, the central positions of the two spindle devices for machining the same circuit board are detected. When the central positions of the two spindle devices are within the preset deviation range, the accuracy requirements are met and normal synchronous machining is performed. When the central positions of the two main shafts are not within the preset deviation range, a prompt is issued to remind the technician to manually adjust. During the adjustment process, since the second spindle device is equipped with an adjusting portion, first, the central coordinates of the first spindle device are adjusted. After the adjustment is completed, based on the first spindle device, the adjusting portion of the second spindle device is adjusted to adjust the central coordinates of the second spindle device to within the preset range.

[0064] Embodiment III

[0065] This embodiment takes a circuit board processing equipment with twelve spindle devices and two spindle assemblies synchronously drilling and machining a circuit board at one station as an example to illustrate in detail the structure of the circuit board processing equipment and how to adjust the central position of the spindle.

[0066] The structure of the circuit board processing device and the connecting part 1204 in this embodiment is the same as that in the first embodiment, which will not be elaborated here. The difference is that in this embodiment, the adjusting part 1206 is a threaded component. When adjusting the adjusting part 1206, the first groove 12043 is circular, the second through hole 12044 is a waist-shaped hole, and the threaded component moves along the third direction in the connected first groove 12043 and second through hole 12044, squeezing the side walls of the first groove 12043 and the second through hole 12044. Since the second through hole 12044 is a waist-shaped hole, the squeezing forces of the threaded component on the side walls of the first groove 12043 and the second through hole 12044 are different, causing relative displacement between the first connecting piece 12041 and the second connecting piece 12042. This displacement may be 3 to 5 micrometers. Thereby driving the second main shaft 1200, the main shaft clamp 1202 and the main shaft cover 1203 to move along the first direction and / or the second direction. The same as in the first embodiment, a connecting part 1204 is provided on each side of the second main shaft 1200, and each connecting part 1204 is configured with an adjusting part 1206. The adjusting parts 1206 on both sides are threaded components, but the orientations of the waist-shaped holes are different. The long side of the cross section of the waist-shaped hole on the left extends along the second direction, and the long side of the cross section of the waist-shaped hole on the right extends along the first direction. Technicians adjust the two threaded components to drive the second main shaft 1200 to move along the first direction and / or the second direction. Here, the first direction and the second direction are perpendicular to each other.

[0067] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A spindle assembly, characterized in that, Applicable to circuit board processing equipment, including: A first base plate, a spindle clamp, a spindle cover and a spindle, The spindle clamp is installed on the first base plate through a connecting part, the spindle cover is installed on the spindle clamp, and the spindle is arranged in an annular interval surrounded by the spindle clamp and the spindle cover; An adjusting part is arranged on the connecting part for finely adjusting the position of the spindle relative to the first base plate.

2. The spindle assembly according to claim 1, wherein, The connecting part includes a first connecting piece and a second connecting piece. The first connecting piece is arranged on the first base plate, the second connecting piece is arranged on the spindle clamp, and the first connecting piece and the second connecting piece are assembled to form a surface contact.

3. The spindle assembly according to claim 2, wherein, The first connecting piece includes a first groove, the second connecting piece includes a second through hole, the first groove and the second through hole communicate with each other, and the adjusting part penetrates through the second through hole and extends into the first groove.

4. The spindle assembly according to claim 3, characterized in that, The second connecting piece includes a limiting part, and the limiting part further includes a central opening. The limiting part is located at one end of the second through hole far away from the first groove, and the limiting part is used to limit the movement of the adjusting part in the axial direction in the second through hole and the first groove.

5. The spindle assembly according to claim 3, wherein, The spindle clamp is installed on the first base plate through two connecting parts on both sides of the spindle. The first groove of each connecting part is circular, the second through hole is an oval hole, and the extending directions of the long sides of the cross sections of the second through holes on both sides of the spindle are perpendicular to each other.

6. The spindle assembly according to claim 3, characterized in that, The adjusting part rotates in the first groove and the second through hole to finely adjust the relative position of the first connecting piece and the second connecting piece; the adjusting part includes any one of the following: an eccentric component, an inclined plane component, a threaded component.

7. The spindle assembly according to claim 2, characterized in that, The connecting part further includes a locking piece, and the locking piece passes through the first connecting piece and the second connecting piece for switching the first connecting piece and the second connecting piece between a locked state and a released state.

8. The spindle assembly according to claim 2, wherein The spindle assembly further includes a chip suction hood guide rod, and the chip suction hood guide rod penetrates through the first connecting piece and the second connecting piece.

9. The spindle assembly according to any one of claims 1 to 8, characterized in that, A plurality of second grooves are arranged on the inner wall of the annular interval, a plurality of supporting pieces are arranged in each second groove, each supporting piece protrudes towards the central axis direction of the annular interval, and the top end thereof abuts against the outer side wall of the spindle; the supporting piece is an insulating piece.

10. A circuit board processing device, characterized in that, Including: A base, a cross beam, a spindle device, a workbench; The workbench is arranged on the base and moves along a second direction. The cross beam is erected above the workbench, and at least one spindle device moving along a first direction is slidably connected to the cross beam; The spindle device includes a second base plate and a spindle part. The second base plate drives the spindle part to move along the first direction; the spindle part includes a spindle assembly and a driving part. A guide rail is arranged on the second base plate, and the driving part drives the spindle assembly to move along a third direction on the guide rail; The spindle assembly includes: a first base plate, a spindle clamp, a spindle cover and a spindle. The spindle clamp is installed on the first base plate through a connecting part, the spindle cover is installed on the spindle clamp, and the spindle is arranged in an annular interval surrounded by the spindle clamp and the spindle cover; An adjustment part is arranged on the connection part. The adjustment part drives the main shaft, the main shaft clamp and the main shaft cover to move in a first direction and / or a second direction, so as to finely adjust the position of the main shaft relative to the first bottom plate; the first direction, the second direction and the third direction are perpendicular to each other.

11. The circuit board processing device according to claim 10, characterized in that, The circuit board processing equipment includes the main shaft assembly according to any one of claims 2 to 8.

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