CN113798967A

CN113798967A - Processing equipment for large-radius arc surface on rib wood of piano

Info

Publication number: CN113798967A
Application number: CN202111228572.1A
Authority: CN
Inventors: 张牧春
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2021-12-17

Abstract

The invention discloses a processing device for a large-radius arc surface on a rib wood of a piano, which comprises a processing table, wherein the top of a mounting plate positioned on the rear side is fixedly connected with a first circular plate, the top of the mounting plate positioned on the front side is fixedly connected with a second circular plate, a grinding wheel is movably connected between the first circular plate and the second circular plate, and the grinding wheel slides along a first annular slide rail while rotating. Drive the input shaft through servo motor and just reverse, the emery wheel that drives and second output shaft rotates with faster rotational speed, gear with first output shaft is connected simultaneously rotates with slower rotational speed, about cooperation gear and ring gear's meshing, make the gear reciprocate along the ring gear surface and advance, thereby when control emery wheel rotates with faster rotation speed, the axle center department of emery wheel is along the reciprocal slip of arc orbit an, rethread piano rib slides to the left end face of piano rib butt at the chute from right side left side along the chute, thereby reach the mesh of polishing to piano rib arc face.

Description

Processing equipment for large-radius arc surface on rib wood of piano

Technical Field

The invention relates to the technical field of wood processing, in particular to processing equipment for a large-radius arc surface on a rib wood of a piano.

Background

Wood working generally refers to a process of beveling wood such as trees and the like to form a required shape, and in the processing production of pianos, wood parts of the pianos, such as a cover plate, a rib and the like of the pianos, need to be processed, two ends of the rib of the pianos are provided with two arc-shaped surfaces with larger radiuses, the arc-shaped surfaces with approximate shapes, which are cut by the rib, are usually polished by manpower, and are continuously corrected to obtain the required arc-shaped surfaces.

Through retrieval, a Chinese patent with publication number CN103341815B discloses a processing device for a large-radius arc surface on a rib wood of a piano, which comprises a frame, a workbench, a power wheel, a tension wheel, a profiling grinding head, an abrasive belt and a power device, wherein the power device is connected with the power wheel, the profiling grinding head is fixed on the frame and is provided with an arc surface; the abrasive belt surrounds the power wheel, the tension wheel and the profiling grinding head to form a closed triangle; a processing space for pushing the end part of the ribbed wood in during processing is formed between the profiling grinding head and the workbench; the outer diameter of the abrasive belt on the circular arc surface of the profiling grinding head is equal to the radius of the large-radius circular arc surface on the rib wood. The processing equipment for the large-radius arc surface on the piano rib wood has the advantages of high working efficiency, high precision and low labor intensity, but the copying grinding head can rub with an abrasive belt in the processing process, the diameter of the arc surface of the copying grinding head can be reduced and the thickness of the abrasive belt can be reduced after the processing time is long, so that the precision of the arc surface of the subsequently processed rib wood cannot meet the requirement, the abrasive belt is convenient to replace, but the copying grinding head needs to be specially made, and the copying grinding head of one specification can only process the piano rib wood of a certain size, so that the processing requirement of the piano rib wood of all sizes is difficult to adapt, and the required raw materials are increased when the copying grinding heads of various specifications are used for processing.

We are through setting up an annular rail of fixing on the base, piano rib is polished along the gliding emery wheel of annular rail on a limit rotation limit of rethread, because annular rail can maintain through smearing lubricating oil etc. mode, annular rail's diameter is difficult for changing because of the friction, and the emery wheel is common grinding tool, when changing, convenient the obtaining, after the emery wheel of changing different diameters, can be applicable to the operation of polishing of the piano rib of different specifications, and then the processing equipment of major radius arc surface on the piano rib that proposes.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides equipment for processing a large-radius arc surface on a piano rib.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a processing equipment of major radius arc surface on piano rib wood, includes the processing platform, the chute feeder has been seted up on the right side of processing bench top portion, the equal fixedly connected with mounting panel of side around processing bench top portion center department is located the rear side the first plectane of mounting panel top fixedly connected with is located the front side the mounting panel top fixedly connected with second plectane, swing joint has the emery wheel between first plectane and the second plectane, and the emery wheel is along first annular slide rail slip in the limit rotation.

Preferably, the front side of first plectane is opened and is equipped with first annular slide rail, and sliding connection has first arc slider in the first annular slide rail, the equal fixedly connected with first flange of both sides wall of first annular slide rail opening part, and the center department of first annular slide rail diapire has seted up the annular and has dodged the groove, and the annular is dodged the inner wall fixedly connected with ring gear that the groove is close to first plectane axle center one side.

Preferably, a second annular slide rail is arranged on the rear side of the second circular plate, a second arc-shaped slide block is connected in the second annular slide rail in a sliding mode, and second flanges are fixedly connected to two side walls of an opening of the second annular slide rail.

Preferably, first arc slider center department fixedly connected with differential mechanism, differential mechanism top center department rotates and is connected with the input shaft, and the rear side rotation of differential mechanism is connected with first output shaft, and the front side rotation of differential mechanism is connected with the second output shaft, and first output shaft runs through first arc slider and extends to the rear side of first arc slider, and first output shaft rotates and connects first arc slider.

Preferably, a gear is fixedly connected to the rear end of the first output shaft, and the gear is meshed with the ring gear.

Preferably, the front end of the second output shaft is fixedly connected with a grinding wheel, and the second output shaft penetrates through the grinding wheel and extends to the front side of the grinding wheel to be rotatably connected with the second arc-shaped sliding block.

Preferably, the first arc-shaped sliding block is mutually matched with two side walls of the first annular sliding rail, mounting grooves are formed in the left side surface and the right side surface of the first arc-shaped sliding block, rollers which are rotatably connected with the first arc-shaped sliding block are arranged in the mounting grooves, and the rollers are rotatably connected to the two side walls of the first annular sliding rail.

Preferably, the left end face of the feed chute is positioned right below the midpoint of the axis connecting line of the first circular plate and the second circular plate, and the projection of the grinding wheel in the vertical direction is positioned in the feed chute.

Preferably, the input shaft is fixedly connected with the output end of a servo motor, the servo motor is fixedly connected to one side, close to the axis of the first circular plate, of the front portion of the first arc-shaped sliding block, the servo motor drives the input shaft to periodically rotate in the forward and reverse directions, the axis of the grinding wheel is driven to deflect in a reciprocating manner from the position right below the midpoint of the connecting line of the axis of the first circular plate and the axis of the second circular plate to the position right below the midpoint of the connecting line of the axis of the first circular plate and the axis of the second circular plate, the circle center of the arc-shaped track a is overlapped with the axis of the first circular plate, and the circle center angle of the arc-shaped track a is equal to that of the large-radius arc surface on the rib wood of the piano.

Preferably, the length between the axis of the first circular plate and the axis of the grinding wheel is L, the radius of the grinding wheel is R, and the radius of the large-radius arc surface on the rib of the piano is R, wherein R is L + R.

Compared with the prior art, the invention provides a processing device for a large-radius arc surface on a piano rib wood, which has the following beneficial effects:

1. the servo motor drives the input shaft to rotate positively and negatively to drive the grinding wheel connected with the second output shaft to rotate at a higher rotating speed, the gear connected with the first output shaft rotates at a lower rotating speed, and the gear moves forwards and backwards along the surface of the ring gear in a manner of matching with the left and right meshing of the gear and the ring gear, so that the axis of the grinding wheel slides in a reciprocating manner along the arc-shaped track a while the grinding wheel rotates at the higher rotating speed, and then the piano rib slides from right to left along the feeding chute until the piano rib abuts against the left end surface of the feeding chute, thereby achieving the purpose of grinding the arc-shaped surface of the piano rib;

2. according to the invention, the length between the axle center of the first circular plate and the axle center of the grinding wheel is L, the radius of the grinding wheel is R, the radius of the large-radius arc surface on the piano rib is R, and R is L + R;

3. according to the invention, the grinding wheel slides back and forth along the arc-shaped track a while rotating, after one piano rib is machined, the piano rib can be replaced manually or by a mechanical arm with a preset program, and the subsequent piano rib to be machined slides to the left end face of the feeding groove from right to left along the feeding groove, so that the purpose of continuous machining is realized.

Drawings

FIG. 1 is a schematic diagram of a right front side view perspective of the present invention;

FIG. 2 is a schematic diagram of a right rear side view angle perspective structure of the present invention;

FIG. 3 is a front perspective view of a first circular plate according to the present invention;

FIG. 4 is a schematic diagram of the right view structure of the present invention;

FIG. 5 is a rear view of the present invention;

FIG. 6 is a schematic top view of the present invention;

FIG. 7 is a schematic cross-sectional view of the first annular slide rail of the present invention;

FIG. 8 is a right side structural view of the differential of the present invention in assembly with a grinding wheel and gear;

FIG. 9 is a schematic structural view of a rib of a piano of the present invention;

FIG. 10 is a schematic view of the grinding range of the grinding wheel of the present invention;

in the figure: 1. a processing table; 2. a feed chute; 3. mounting a plate; 4. a first circular plate; 5. a first annular slide rail; 6. a first arc-shaped sliding block; 61. mounting grooves; 62. a roller; 7. a first flange; 8. an annular avoidance groove; 9. a ring gear; 10. a differential mechanism; 101. an input shaft; 102. a first output shaft; 103. a second output shaft; 11. a gear; 12. a grinding wheel; 13. a second circular plate; 14. a second annular slide rail; 15. a second arc-shaped sliding block; 16. a second flange; arc-shaped track (a) and grinding range.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, a processing device for a large-radius arc surface on a rib wood of a piano comprises a processing table 1, wherein a feeding chute 2 is formed in the right side of the top of the processing table 1, mounting plates 3 are fixedly connected to the front side and the rear side of the center of the top of the processing table 1, a first circular plate 4 is fixedly connected to the top of the mounting plate 3 on the rear side, a second circular plate 13 is fixedly connected to the top of the mounting plate 3 on the front side, a grinding wheel 12 is movably connected between the first circular plate 4 and the second circular plate 13, and the grinding wheel 12 slides along a first annular slide rail 5 while rotating.

Referring to fig. 1 and 7, a first annular slide rail 5 is provided at the front side of the first circular plate 4, a first arc-shaped slider 6 is slidably connected in the first annular slide rail 5, both side walls of an opening of the first annular slide rail 5 are fixedly connected with first flanges 7, an annular avoiding groove 8 is provided at the center of the bottom wall of the first annular slide rail 5, an annular gear 9 is fixedly connected to the inner wall of the annular avoiding groove 8 close to one side of the axis of the first circular plate 4, the first arc-shaped slider 6 is limited by the bottom wall of the first annular slide rail 5 and one side of the first flanges 7 close to the bottom wall of the first annular slide rail 5, the first arc-shaped slider 6 can stably slide along the first annular slide rail 5, and the reliability of the device is improved.

Referring to fig. 2 and 8, a second annular slide rail 14 is disposed at the rear side of the second circular plate 13, a second arc-shaped slider 15 is slidably connected in the second annular slide rail 14, both side walls of an opening of the second annular slide rail 14 are fixedly connected with second flanges 16, the second arc-shaped slider 15 and the second flanges 16 are in mirror symmetry, the second arc-shaped slider 15 can stably slide along the second annular slide rail 14 by limiting the second arc-shaped slider 15 by the second annular slide rail 14 and the second flanges 16, and the second arc-shaped slider 15 and the first arc-shaped slider 6 can be stabilized from the front end and the rear end of the differential 10, so as to ensure the stability of the grinding wheel 12 during the rotation process.

Referring to fig. 1-8, a differential 10 is fixedly connected to the center of a first arc-shaped slider 6, an input shaft 101 is rotatably connected to the center of the top of the differential 10, a first output shaft 102 is rotatably connected to the rear side of the differential 10, a second output shaft 103 is rotatably connected to the front side of the differential 10, the first output shaft 102 penetrates through the first arc-shaped slider 6 and extends to the rear side of the first arc-shaped slider 6, the first output shaft 102 is rotatably connected to the first arc-shaped slider 6, a gear 11 is fixedly connected to the rear end of the first output shaft 102, the gear 11 is engaged with a ring gear 9, a grinding wheel 12 is fixedly connected to the front end of the second output shaft 103, the second output shaft 103 penetrates through the grinding wheel 12 and extends to the front side of the grinding wheel 12 and is rotatably connected to a second arc-shaped slider 15, and the grinding wheel 12 is capable of grinding piano rib wood at a relatively fast rotation speed through differential rotation of the first output shaft 102 and the second output shaft 103, gear 11 rotates under slower rotational speed, cooperation gear 11 and ring gear 9's meshing effect, make first arc slider 6 slowly slide along first annular slide rail 5, rethread second output shaft 103 rotates with second arc slider 15 to be connected, first arc slider 6 slowly slides in step with second arc slider 15, thereby make emery wheel 12 rotation rotational speed higher, and it is slower to do the gliding speed of marcing of arc along first annular slide rail 5 and second annular slide rail 14, and then the guarantee is to the effect of polishing of piano rib wood.

Referring to fig. 7, two side walls of the first arc-shaped slider 6 and the first annular slide rail 5 are engaged with each other, mounting grooves 61 are formed on both left and right side surfaces of the first arc-shaped slider 6, rollers 62 rotatably connected to the first arc-shaped slider 6 are disposed inside the mounting grooves 61, the rollers 62 are rotatably connected to two side walls of the first annular slide rail 5, the second arc-shaped slider 15 is also provided with the mounting grooves 61 and the rollers 62, the second arc-shaped slider 15 and the first arc-shaped slider 6 are designed in a mirror image manner, and the first arc-shaped slider 6 slides along the first annular slide rail 5 and the second arc-shaped slider 15 slides along the second annular slide rail 14 more smoothly through the rolling effect of the rollers 62.

Referring to fig. 1-2 and 4-6, the left end face of the feed chute 2 is located right below the midpoint of the connecting line of the axes of the first circular plate 4 and the second circular plate 13, the projection of the grinding wheel 12 in the vertical direction is located in the feed chute 2, when the piano rib slides along the feeding groove 2 from right to left, the left end of the piano rib abuts against the left end surface of the feeding groove 2, at the moment, the top of the left end of the rib wood of the piano is just positioned right below the midpoint of the axis connecting line of the first circular plate 4 and the second circular plate 13, when the axle center of the grinding wheel 12 is positioned right below the axle center connection of the first circular plate 4 and the second circular plate 13, the lowest point of the grinding wheel 12 is just abutted against the top of the left end of the rib wood of the piano, when the grinding wheel 12 slides to the upper right along the first annular slide rail 5 while rotating, the contact point of the circumferential surface of the grindstone 12 with the piano rib is formed in an arc shape from the top of the left end of the piano rib to the upper right.

Referring to fig. 9-10, an input shaft 101 is fixedly connected to an output end of a servo motor, the servo motor is fixedly connected to a side of a front portion of a first arc-shaped slider 6 close to an axis of a first circular plate 4, the servo motor drives the input shaft 101 to periodically rotate in a forward and reverse direction, an axis of a grinding wheel 12 is driven to reciprocate along an arc-shaped track a from a position right below a midpoint between axes of the first circular plate 4 and a second circular plate 13 to a position right below a midpoint between axes of the first circular plate 4 and the second circular plate 13, a center of the arc-shaped track a coincides with an axis of the first circular plate 4, a center angle of the arc-shaped track a is equal to a center angle of a large-radius arc surface on a piano rib, so that when the grinding wheel 12 slides back and forth from a rotating edge in the arc-shaped track a, a point of the farthest position from the axes of the first circular plate 4 and the axes of the second circular plate 13 at the midpoint of the piano rib is always located on an arc surface to be processed by the piano rib, the grinding wheel 12 reciprocates along the arc-shaped trajectory a plurality of times to enhance the grinding effect on the piano ribs, and in addition, continuous processing can be performed by replacing the piano ribs.

The length between the axle center of the first circular plate 4 and the axle center of the grinding wheel 12 is L, the radius of the grinding wheel 12 is R, the radius of the large-radius arc surface on the piano rib is R, and R is L + R.

The working principle is as follows: the input shaft 101 is driven to rotate by the servo motor, so that the first output shaft 102 and the second output shaft 103 are driven to rotate, and the differential 10 is in the prior art, so that the differential 10 can realize that the rotating speed of the second output shaft 103 is greater than that of the first output shaft 102, so that the grinding wheel 12 rotates at a higher autorotation speed, the gear 11 rotates at a lower rotating speed, and the gear 11 advances along the ring gear 9 through the meshing action of the gear 11 and the ring gear 9, so that the first arc-shaped sliding block 6 is driven to slide along the first ring-shaped sliding rail 5, and the second output shaft 103 penetrates through the grinding wheel 12 and then is rotationally connected with the second arc-shaped sliding block 15, so that the second arc-shaped sliding block 15 and the first arc-shaped sliding block 6 synchronously move;

the input shaft 101 is controlled to rotate in the intermittent forward and reverse directions through the servo motor, the grinding wheel 12 is driven to rotate at a high speed, the axis of the grinding wheel 12 is located in the arc-shaped track a and slides in a reciprocating mode, at the moment, the piano rib slides along the feed chute 2 from right to left until the piano rib abuts against the left end face of the feed chute 2, the large-radius arc-shaped face of the piano rib is polished through the rotation of the grinding wheel 12 and the arc-shaped moving track, after polishing of one piano rib is completed, the piano rib can be replaced through manual work or a manipulator with a preset program, and continuous processing is conducted.

When piano ribs of different specifications are processed, the grinding wheels 12 mounted on the second output shaft 103 are replaced by the grinding wheels 12 of different diameters so as to adapt to the radius of the large-radius arc-shaped surface of the piano ribs of different specifications and adapt to the processing requirements of the piano ribs of different specifications.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a processing equipment of big radius arc surface on piano rib wood, includes processing platform (1), its characterized in that: feed chute (2) have been seted up on the right side at processing platform (1) top, the equal fixedly connected with mounting panel (3) of front and back side of processing platform (1) top center department is located the rear side first plectane (4) of mounting panel (3) top fixedly connected with is located the front side mounting panel (3) top fixedly connected with second plectane (13), swing joint has emery wheel (12) between first plectane (4) and second plectane (13), and emery wheel (12) limit rotation limit slides along first annular slide rail (5).

2. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 1, wherein: first annular slide rail (5) are opened to the front side of first plectane (4), and sliding connection has first arc slider (6) in first annular slide rail (5), the equal fixedly connected with first flange (7) of both sides wall of first annular slide rail (5) opening part, and the center department of first annular slide rail (5) diapire has seted up the annular and has dodged groove (8), and the annular dodges groove (8) and is close to inner wall fixedly connected with ring gear (9) on one side of first plectane (4) axle center.

3. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 1, wherein: a second annular slide rail (14) is arranged on the rear side of the second circular plate (13), a second arc-shaped slide block (15) is connected in the second annular slide rail (14) in a sliding mode, and second flanges (16) are fixedly connected to two side walls of an opening of the second annular slide rail (14).

4. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 2, wherein: the center of the first arc-shaped sliding block (6) is fixedly connected with a differential (10), the center of the top of the differential (10) is rotatably connected with an input shaft (101), the rear side of the differential (10) is rotatably connected with a first output shaft (102), the front side of the differential (10) is rotatably connected with a second output shaft (103), and the first output shaft (102) penetrates through the first arc-shaped sliding block (6) and extends to the rear side of the first arc-shaped sliding block (6).

5. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 4, wherein: the rear end of the first output shaft (102) is fixedly connected with a gear (11), and the gear (11) is meshed with the ring gear (9).

6. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 4, wherein: the front end of the second output shaft (103) is fixedly connected with the grinding wheel (12), and the second output shaft (103) penetrates through the grinding wheel (12) and extends to the front side of the grinding wheel (12) to be rotationally connected with the second arc-shaped sliding block (15).

7. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 2, wherein: the two side walls of the first arc-shaped sliding block (6) and the first annular sliding rail (5) are mutually matched, mounting grooves (61) are formed in the left side surface and the right side surface of the first arc-shaped sliding block (6), idler wheels (62) which are rotatably connected with the first arc-shaped sliding block (6) are arranged inside the mounting grooves (61), and the idler wheels (62) are rotatably connected to the two side walls of the first annular sliding rail (5).

8. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 1, wherein: the left end face of the feed tank (2) is located right below the midpoint of the axis connecting line of the first circular plate (4) and the second circular plate (13), and the projection of the grinding wheel (12) in the vertical direction is located in the feed tank (2).

9. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 4, wherein: the input shaft (101) is fixedly connected with the output end of a servo motor, the servo motor is fixedly connected to one side, close to the axis of the first circular plate (4), of the front portion of the first arc-shaped sliding block (6), the servo motor drives the input shaft (101) to rotate forwards and backwards periodically, the axis of the grinding wheel (12) is driven to deflect back and forth along the arc-shaped track (a) from the position right below the midpoint of the connecting line of the axis of the first circular plate (4) and the axis of the second circular plate (13) to the position right below the midpoint of the connecting line of the axis of the first circular plate (4) and the axis of the second circular plate (13), the circle center of the arc-shaped track (a) is overlapped with the axis of the first circular plate (4), and the circle center angle of the arc-shaped track (a) is equal to that of a large-radius arc surface on a piano rib wood.

10. The processing equipment of the large radius arc surface on the rib of the piano as claimed in claim 1, wherein: the length between the axle center of the first circular plate (4) and the axle center of the grinding wheel (12) is L, the radius of the grinding wheel (12) is R, the radius of the large-radius arc surface on the rib of the piano is R, and R is L + R.