CN212471839U - High-precision drilling and cutting integrated device for wooden chair - Google Patents

Abstract

The utility model provides a wooden chair high accuracy drilling cutting integrated device belongs to wooden chair production technical field. The high-precision drilling and cutting integrated device for the wooden chair comprises a workbench, a first bearing table, a drilling piece, a cutting piece, a second bearing table, a power piece, a first supporting plate, a first pushing piece, a second supporting plate, a fixing piece and a second pushing piece. The utility model discloses in can control the plank accurately towards being close to drilling or cutting piece motion, drilling to be handled and bore for drilling plank and first sweeps, cutting is cut for cutting plank and second sweeps drilling plank, realizes that control drilling with high accuracy for the plank is drilled and control cutting is cut for the plank, and the precision is higher, simple structure, easy and simple to handle.

Description

High-precision drilling and cutting integrated device for wooden chair

Technical Field

The utility model belongs to the technical field of wooden chair production, a wooden chair high accuracy drilling cutting integrated device is related to.

Background

The current wooden chair needs drilling and cutting, but general wooden chair all separately carries out drilling and cutting, can't carry out drilling and cutting simultaneously to the production wooden chair like this, causes the efficiency lower, and the precision is lower.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the above-mentioned problem that prior art exists, provide a wooden chair high accuracy drilling cutting integrated device, the utility model aims to solve the technical problem that: how to provide a wooden chair high accuracy drilling cutting integrated device.

The purpose of the utility model can be realized by the following technical proposal:

a high-precision drilling and cutting integrated device for a wood chair is used for drilling and cutting a wood board to be processed of the wood chair, and comprises a workbench, a first bearing table arranged at the first end of the workbench, a drilling part used for drilling the wood board to be processed into the drilled wood board and first scraps, a cutting part used for cutting the drilled wood board into the cut wood board and second scraps, a second bearing table arranged at the second end of the workbench, a power part arranged at the top end of the second bearing table and used for respectively driving the drilling part and the cutting part, a first supporting plate arranged at the first end of the first bearing table, a second supporting plate arranged at the second end of the first bearing table, a first pushing part used for pushing the first supporting plate to move towards the direction close to the drilling part and the cutting part or driving the first supporting plate to move towards the direction far away from the drilling part and the cutting part, a second supporting plate arranged at the first end of the top of the first supporting plate, a second supporting plate arranged at the, The second pushing piece is arranged at the second end of the top of the first supporting plate and used for pushing the second supporting plate to move from the first end to the second end on the first supporting plate.

Preferably, the hydraulic lifting device further comprises a first hydraulic cylinder, one end of the first hydraulic cylinder is connected with the first end of the workbench, the other end of the first hydraulic cylinder is connected with the first bearing platform and used for lifting the first bearing platform, the first hydraulic cylinder is vertically arranged, the bottom end of the first hydraulic cylinder is fixed on the workbench, and a first piston rod of the first hydraulic cylinder is fixed on the first bearing platform.

Preferably, still include that one end is connected in workstation second end, the other end is connected in the second plummer, is used for the second pneumatic cylinder of lift second plummer, the vertical setting of second pneumatic cylinder, second pneumatic cylinder bottom mounting in workstation, the second piston rod of second pneumatic cylinder is fixed in the second plummer.

Preferably, the device further comprises a shell arranged at the top end of the workbench.

Preferably, still including setting up in the feed inlet in workstation middle part, set up in feed inlet department, be used for bearing the weight of the cutting plank and make the elasticity that first sweeps and second sweeps permeate bear the net, set up in the workstation inside, be used for collecting the waste bin of first sweeps and second sweeps.

Preferably, the power part includes first motor, one end is connected in the first end of second plummer, the other end is connected in the first support column of first motor bottom, set up in the first motor shaft of first motor, first pivot pole, one end is connected in first motor shaft, the other end is connected in the first shaft coupling of first pivot pole, cup joint in the first bearing of first pivot pole first end, one end is connected in second plummer second end, the other end is connected in the second support column of first bearing bottom, cup joint in the first gear of first pivot pole second end.

Preferably, the drilling piece is including the second dwang that is located first dwang one side, cup joint in the second bearing of the first end of second dwang, one end is connected in the second bearing bottom, the other end is connected in the third support column of second plummer third end, cup joint in the third bearing of second dwang second end, one end is connected in the third bearing bottom, the fourth support column of second plummer fourth end is connected to the other end, cup joint and lie in the second bearing on the second dwang, the part between the third bearing, mesh in the second gear of first gear one end, connect in the drill bit of second dwang tip.

Preferably, the cutting part comprises a third rotating rod positioned on the other side of the first rotating rod, a fourth bearing sleeved at the first end of the third rotating rod, a fifth supporting column with one end connected to the fourth bearing and the other end connected to the fifth end of the second bearing table, a fifth bearing sleeved at the second end of the third rotating rod, a sixth supporting column with one end connected to the fifth bearing and the other end connected to the sixth end of the second bearing table, a part sleeved on the third rotating rod and positioned between the fourth bearing and the fifth bearing, a third gear meshed with the other end of the first gear and a cutting knife connected to one end of the third rotating rod.

Preferably, the mounting is including the first fixed block that is fixed in the first end of second backup pad, set up the first internal thread hole in first fixed block, be fixed in the second fixed block of second backup pad second end, set up second internal thread hole, one end spiro union in first internal thread hole and butt in the first spiro union of pending plank first end, one end spiro union in the second internal thread and butt in the second spiro union of pending plank second end, be equipped with the first external screw thread portion that spiro union in first internal thread hole, length are less than first spiro union pole length on the first spiro union pole, be equipped with second internal thread hole, length on the second spiro union pole and be less than the second external screw thread portion of second spiro union pole length.

Preferably, the center line of the first rotating rod, the center line of the second rotating rod and the center line of the third rotating rod are parallel, the center line of the first supporting plate is perpendicular to the center line of the first rotating rod, the center line of the second supporting plate is parallel to the center line of the first supporting plate, the first pushing member is a third hydraulic cylinder used for pushing the first supporting plate to make linear motion along the direction parallel to the center line of the drill bit, and the second pushing member is a fourth hydraulic cylinder used for pushing the second supporting plate to make linear motion along the direction perpendicular to the center line of the cutting knife.

The utility model provides a power spare drives drilling spare and cutting piece respectively, the mounting is fixed in the second backup pad with the pending plank, first impeller promotes first backup pad towards being close to drilling spare, the direction motion of cutting piece or drive first backup pad towards keeping away from drilling spare, the direction motion of cutting piece, the second impeller promotes the second backup pad and moves from first end to second end in first backup pad, thereby can control the plank towards being close to drilling spare or cutting piece motion accurately, drilling spare is treated and is drilled for drilling plank and first sweeps, cutting piece cuts drilling plank for cutting plank and second sweeps, realize that control drilling spare drills for the plank and control cutting piece cuts for the plank high-accuracy, the precision is higher, moreover, the steam generator is simple in structure, and is easy and simple to handle.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a top view of a table top in the present invention;

fig. 3 is a side view of the first gear engaged with the second gear at one end and the third gear at the other end.

In the figure: 1-shell, 2-workbench, 21-waste bin, 22-elastic bearing net, 31-second hydraulic cylinder, 32-second bearing table, 33-first hydraulic cylinder, 34-first bearing table, 41-first motor, 42-first supporting column, 43-coupler, 44-first rotating rod, 45-first gear, 46-first bearing, 47-second supporting column, 51-second rotating rod, 52-second bearing, 53-third bearing, 54-second gear, 55-drill, 56-third supporting column, 57-fourth supporting column, 61-third rotating rod, 62-fourth bearing, 63-fifth bearing, 64-third gear, 65-cutter, 66-fifth supporting column, 71-a first supporting plate, 72-a third hydraulic cylinder, 73-a second supporting plate, 74-a fourth hydraulic cylinder, 81-a first fixing block, 82-a first screw rod, 83-a second fixing block, 84-a second screw rod, and 9-a wood board to be processed.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Referring to fig. 1, 2 and 3, the integrated device for drilling and cutting a wood board 9 to be processed of a wood chair in an embodiment of the present invention includes a working table 2, a first supporting table 34 disposed at a first end of the working table 2, a drilling member for drilling the wood board 9 to be processed into a drilled wood board and first scraps, a cutting member for cutting the drilled wood board into a cut wood board and second scraps, a second supporting table 32 disposed at a second end of the working table 2, a power member disposed at a top end of the second supporting table 32 for driving the drilling member and the cutting member respectively, a first supporting plate 71 disposed at a first end of the first supporting table 34, a second supporting plate 71 disposed at a second end of the first supporting table 34, and a first supporting plate 71 having one end connected to the first supporting plate 71 for pushing the first supporting plate 71 to move toward a direction close to the drilling member and the cutting member or driving the first supporting plate 71 to move away from the drilling member, A first pushing part moving in the direction of the cutting part, a second supporting plate 73 arranged at the first end of the top of the first supporting plate 71, a fixing part arranged at the top end of the second supporting plate 73 and used for fixing the wood board 9 to be processed, and a second pushing part arranged at the second end of the top of the first supporting plate 71 and used for pushing the second supporting plate 73 to move on the first supporting plate 71 from the first end to the second end.

Here, the power part drives drilling and cutting respectively, the mounting is fixed in second backup pad 73 with pending plank 9, first impeller promotes first backup pad 71 towards being close to drilling, the direction motion of cutting or drive first backup pad 71 towards keeping away from drilling, the direction motion of cutting, second impeller promotes second backup pad 73 and moves from first end to second end on first backup pad 71, thereby can control the plank towards being close to drilling or cutting the motion, drilling is treated to handle and is drilled plank and first sweeps, cutting is cut into drilling plank and second sweeps, realize that control drilling is drilled for the plank with high accuracy and control cutting is cut for the plank, the precision is higher, moreover, the steam generator is simple in structure, and the operation is simple and convenient.

As wood chair high accuracy drilling cutting integrated device in this embodiment can also include that one end is connected in workstation 2 first end, the other end is connected in first plummer 34, be used for the first pneumatic cylinder 33 of first plummer 34 of going up and down, the vertical setting of first pneumatic cylinder 33, first pneumatic cylinder 33 bottom mounting is in workstation 2, the first piston rod of first pneumatic cylinder 33 is fixed in first plummer 34, can conveniently adjust the height of first plummer 34 through first pneumatic cylinder 33 when plank height is less than drilling or cutting member like this, and then adjust first backup pad 71, the height of second backup pad 73, thereby realize adjusting the height of plank, make plank and drilling, cutting member be in the coplanar, make things convenient for drilling and cutting member to carry out the drilling for the plank, improve drilling accuracy and cutting accuracy.

As wood chair high accuracy drilling cutting integrated device in this embodiment can also include that one end is connected in workstation 2 second end, the other end is connected in second plummer 32, a second hydraulic cylinder 31 for going up and down second plummer 32, the vertical setting of second hydraulic cylinder 31, 31 bottom mounting in workstation 2 of second hydraulic cylinder, the second piston rod of second hydraulic cylinder 31 is fixed in second plummer 32, can conveniently adjust the height of second plummer 32 through second hydraulic cylinder 31 when plank is higher than drilling or cutting piece like this, and then adjust the height of drilling or cutting piece, thereby make drilling and plank be in the coplanar or cutting piece and plank are in the coplanar, make things convenient for drilling to carry out drilling and cutting for the plank, improve drilling precision and cutting precision. The worktable 2 may be a rectangular body worktable 2, the first bearing platform 34 and the second bearing platform 32 may be rectangular body bearing platforms, the first bearing platform 34 may be welded at a first end of the worktable 2, and the second bearing platform 32 may be welded at a second end of the worktable 2.

The integrated device for high-precision drilling and cutting of the wooden chair in the embodiment can also comprise a shell 1 arranged at the top end of the workbench 2. Shell 1 can swing joint in workstation 2, both can avoid first sweeps and the departure of second sweeps and polluted environment like this, can open shell 1 again and take out the cutting plank and clear up the sweeps after accomplishing the operation.

As the high-precision drilling and cutting integrated device for the wooden chair in the embodiment, the device can further comprise a feeding hole arranged in the middle of the workbench 2, an elastic bearing net 22 arranged at the feeding hole and used for bearing a cutting wood board and enabling first scraps and second scraps to penetrate through, and a waste box 21 arranged inside the workbench 2 and used for collecting the first scraps and the second scraps. The cutting plank can be held to elasticity carrier net 22, and the mesh of elasticity carrier net 22 can make first sweeps and second sweeps see through to make cutting plank and first sweeps, the separation of second sweeps, four angles of elasticity carrier net 22 can be through screw swing joint in workstation 2, conveniently take off the cutting plank after screw off, open the elasticity carrier net 22 time collect first sweeps and second sweeps.

The power member may include a first motor 41, one end is connected to the first end of the second bearing platform 32, the other end is connected to the first supporting column 42 at the bottom end of the first motor 41, a first motor 41 shaft disposed on the first motor 41, a first rotating rod 44, one end is connected to the first motor 41 shaft, the other end is connected to the first coupling 43 of the first rotating rod 44, a first bearing 46 sleeved on the first end of the first rotating rod 44, one end is connected to the second end of the second bearing platform 32, the other end is connected to the second supporting column 47 at the bottom end of the first bearing 46, and a first gear 45 sleeved on the second end of the first rotating rod 44. The first bearing 46 may be sleeved on an end of the first rotating rod 44, the first gear 45 may be sleeved on a portion of the first rotating rod 44 located between the first bearing 46 and the first coupling 43, one end of the first supporting column 42 may be welded to the first motor 41, and the other end thereof may be welded to the second bearing platform 32, one end of the second supporting column 47 may be welded to the first bearing 46, and the other end thereof may be welded to the second bearing platform 32. The first support column 42 and the second support column 47 may be rectangular support columns. The centerline of the first rotating lever 44 may be parallel to the centerline of the table 2.

The drilling member may include a second rotating rod 51 disposed on one side of the first rotating rod 44, a second bearing 52 sleeved on a first end of the second rotating rod 51, a third supporting pillar 56 having one end connected to a bottom end of the second bearing 52 and the other end connected to a third end of the second bearing platform 32, a third bearing 53 sleeved on a second end of the second rotating rod 51, a fourth supporting pillar 57 having one end connected to a bottom end of the third bearing 53 and the other end connected to a fourth end of the second bearing platform 32, a portion sleeved on the second rotating rod 51 and located between the second bearing 52 and the third bearing 53, a second gear 54 engaged with one end of the first gear 45, and a drill 55 connected to one end of the second rotating rod 51. The center line of the second rotating rod 51 may be parallel to the center line of the first rotating rod 44, the center line of the drill 55 may be parallel to the center line of the first rotating rod 44, and the third and fourth supporting columns 56 and 57 may be rectangular supporting columns. The third supporting column 56 is welded to the third bearing 53 at one end and welded to the second bearing platform 32 at the other end. The fourth supporting column 57 has one end welded to the fourth bearing 62 and the other end welded to the second bearing platform 32. The second rotating shaft 51 is welded to the drill 55.

The cutting member may include a third rotating rod 61 located at the other side of the first rotating rod 44, a fourth bearing 62 sleeved on the first end of the third rotating rod 61, a fifth supporting pillar 66 with one end connected to the fourth bearing 62 and the other end connected to the fifth end of the second carrier 32, a fifth bearing 63 sleeved on the second end of the third rotating rod 61, a sixth supporting pillar with one end connected to the fifth bearing 63 and the other end connected to the sixth end of the second carrier 32, a portion sleeved on the third rotating rod 61 and located between the fourth bearing 62 and the fifth bearing 63, a third gear 64 engaged with the other end of the first gear 45, and a cutting blade 65 connected to one end of the third rotating rod 61. The central line of the third rotating rod 61 can be parallel to the central line of the first rotating rod 44, the cutting knife 65 can be a circular cutting knife 65, the cutting knife 65 can be perpendicular to the central line of the first rotating rod 44, and the third rotating rod 61 is welded at the center of the circle of the cutting knife 65. The fifth support column 66 and the sixth support column may be rectangular support columns. The fifth supporting column 66 may be welded to the fifth bearing 63 at one end and welded to the second carrier stage 32 at the other end. One end of the sixth supporting column may be welded to the sixth bearing, and the other end may be welded to the second carrier stage 32. The third rotating lever 61 and the second rotating lever 51 may be symmetrically disposed on both sides of the first rotating lever 44.

The fixing member may include a first fixing block 81 fixed to a first end of the second support plate 73, a first internal threaded hole disposed in the first fixing block 81, a second fixing block 83 fixed to a second end of the second support plate 73, a second internal threaded hole disposed in the second fixing block 83, a first threaded rod 82 having one end screwed to the first internal threaded hole and abutted to a first end of the wood board 9 to be processed, a second threaded rod 84 having one end screwed to a second internal thread and abutted to a second end of the wood board 9 to be processed, a first external threaded portion having a length smaller than that of the first threaded rod 82 and being provided with a second internal threaded hole on the second threaded rod 84, and a second external threaded portion having a length smaller than that of the second threaded rod 84. The first fixing block 81 and the second fixing block 83 can be rectangular fixing blocks, the center line of the first internal thread hole coincides with the center line of the second internal thread hole, and the center line of the first internal thread hole is perpendicular to the center line of the first rotating rod 44, so that the center line of the wood board is perpendicular to the center line of the first rotating rod 44, the position of the wood board to be drilled is parallel to the center line of the first rotating rod 44, the cutting position of the wood board is tangent to the circular cutting knife 65, and cutting is convenient.

The center line of the first rotating rod 44, the center line of the second rotating rod 51 and the center line of the third rotating rod 61 are parallel, the center line of the first supporting plate 71 is perpendicular to the center line of the first rotating rod 44, the center line of the second supporting plate 73 is parallel to the center line of the first supporting plate 71, the first pushing member is a third hydraulic cylinder 72 for pushing the first supporting plate 71 to make a linear motion along a direction parallel to the center line of the drill 55, and the second pushing member is a fourth hydraulic cylinder 74 for pushing the second supporting plate 73 to make a linear motion along a direction perpendicular to the center line of the cutting knife 65. The center line of the first pushing member coincides with the center line of the first support plate 71, and the first support plate 71 may be a rectangular support plate. The center line of the second push rod member coincides with the center line of the second support plate 73, and the second support plate 73 may be a rectangular support plate.

Firstly, fixing a wood board through a fixing part, enabling a hole to be drilled and a drilling part of the wood board to be positioned on the same plane through a first hydraulic cylinder 33 and a second hydraulic cylinder 31, then pushing a second supporting plate 73 through a second pushing part to enable the hole to be drilled to be parallel to a drill 55, then pushing a first supporting plate 71 through a first pushing part to move towards the direction close to the drill 55 so as to enable the drill 55 to drill the wood board, then pulling the first supporting plate 71 through the first pushing part to move towards the direction far away from the drill 55, then pulling the second supporting plate 73 through the second pushing part so as to enable the position to be cut to be positioned at one side of a cutting knife 65, then pushing the first supporting plate 71 through the first pushing part so as to enable the wood board to be positioned at one end of the cutting knife 65, enabling the position to be cut to be positioned at a preset height at one end of the cutting knife 65 through the second hydraulic cylinder 31 or, so that the cutting blade 65 cuts the wooden board to obtain a cut wooden board.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The utility model provides a wooden chair high accuracy drilling cutting integrated device for to the pending plank (9) of wooden chair bore and cut, its characterized in that: comprises a workbench (2), a first bearing platform (34) arranged at the first end of the workbench (2), a drilling part for drilling a wood board (9) to be processed into the drilled wood board and first scraps, a cutting part for cutting the drilled wood board into the cut wood board and second scraps, a second bearing platform (32) arranged at the second end of the workbench (2), a power part arranged at the top end of the second bearing platform (32) and used for respectively driving the drilling part and the cutting part, a first supporting plate (71) arranged at the first end of the first bearing platform (34), a first pushing part arranged at the second end of the first bearing platform (34) and provided with one end connected to the first supporting plate (71) and used for pushing the first supporting plate (71) to move towards the direction close to the drilled part and the cutting part or driving the first supporting plate (71) to move towards the direction far away from the drilled part and the cutting part, a first pushing part for pushing the first pushing part to move towards the, The wood board processing device comprises a second supporting plate (73) arranged at the first end of the top of the first supporting plate (71), a fixing piece arranged at the top end of the second supporting plate (73) and used for fixing a wood board (9) to be processed, and a second pushing piece arranged at the second end of the top of the first supporting plate (71) and used for pushing the second supporting plate (73) to move on the first supporting plate (71) from the first end to the second end.

2. The integrated wood chair high-precision drilling and cutting device as claimed in claim 1, wherein: still include that one end is connected in workstation (2) first end, the other end connect in first plummer (34), be used for first pneumatic cylinder (33) of first plummer (34) of going up and down, the vertical setting of first pneumatic cylinder (33), first pneumatic cylinder (33) bottom mounting is in workstation (2), the first piston rod of first pneumatic cylinder (33) is fixed in first plummer (34).

3. The integrated wood chair high-precision drilling and cutting device as claimed in claim 1 or 2, wherein: still include that one end is connected in workstation (2) second end, the other end connects in second plummer (32), is used for second hydraulic cylinder (31) of lift second plummer (32), the vertical setting of second hydraulic cylinder (31), second hydraulic cylinder (31) bottom mounting in workstation (2), the second piston rod of second hydraulic cylinder (31) is fixed in second plummer (32).

4. The integrated wood chair high-precision drilling and cutting device as claimed in claim 3, wherein: the device also comprises a shell (1) arranged at the top end of the workbench (2).

5. The integrated wood chair high-precision drilling and cutting device as claimed in claim 4, wherein: the wood cutting machine is characterized by further comprising a feeding hole arranged in the middle of the workbench (2), an elastic bearing net (22) arranged at the feeding hole and used for bearing a cutting wood board and enabling first scraps and second scraps to penetrate, and a scrap box (21) arranged inside the workbench (2) and used for collecting the first scraps and the second scraps.

6. The integrated wood chair high-precision drilling and cutting device as claimed in claim 4, wherein: the power part comprises a first motor (41), one end of the power part is connected with the first end of the second bearing platform (32), the other end of the power part is connected with a first supporting column (42) at the bottom end of the first motor (41), a first motor (41) shaft arranged on the first motor (41), a first rotating rod (44), one end of the power part is connected with the first motor (41) shaft, the other end of the power part is connected with a first coupler (43) of the first rotating rod (44), a first bearing (46) sleeved at the first end of the first rotating rod (44), one end of the power part is connected with the second end of the second bearing platform (32), the other end of the power part is connected with a second supporting column (47) at the bottom end of the first bearing (46), and a first gear (45) sleeved at the second.

7. The integrated wood chair high-precision drilling and cutting device as claimed in claim 6, wherein: the drilling piece is including second dwang (51) that is located first dwang (44) one side, cup joint in second bearing (52) of second dwang (51) first end, one end is connected in second bearing (52) bottom, the other end is connected in third support column (56) of second plummer (32) third end, cup joint in third bearing (53) of second dwang (51) second end, one end is connected in third bearing (53) bottom, the other end is connected in fourth support column (57) of second plummer (32) fourth end, cup joint lie in second bearing (52) on second dwang (51), the part between third bearing (53), mesh in second gear (54) of first gear (45) one end, connect in drill bit (55) of second dwang (51) one end portion.

8. The integrated wood chair high-precision drilling and cutting device as claimed in claim 7, wherein: the cutting piece is including third dwang (61) that is located first dwang (44) opposite side, cup joint in fourth bearing (62) of third dwang (61) first end, one end is connected in fourth bearing (62), the other end is connected in fifth support column (66) of second plummer (32) fifth end, cup joint in fifth bearing (63) of third dwang (61) second end, one end is connected in fifth bearing (63), the other end is connected in the sixth support column of second plummer (32) sixth end, cup joint and lie in fourth bearing (62) on third dwang (61), the part between fifth bearing (63), mesh in third gear (64) of first gear (45) other end, connect in cutting knife (65) of third dwang (61) one end portion.

9. The integrated wood chair high-precision drilling and cutting device as claimed in claim 1, wherein: the mounting is including first fixed block (81) that is fixed in second backup pad (73) first end, set up the first internal thread hole in first fixed block (81), be fixed in second fixed block (83) of second backup pad (73) second end, set up second internal thread hole in second fixed block (83), one end spiro union in first internal thread hole and butt in first spiro union (82) of pending plank (9) first end, one end spiro union in second internal thread and butt in second spiro union (84) of pending plank (9) second end, be equipped with the spiro union on first spiro union (82) in first internal thread hole, length are less than the first thread portion of first spiro union (82) length, be equipped with second internal thread hole on second spiro union (84), length is less than the second external thread portion of second spiro union (84) length.

10. The integrated wood chair high-precision drilling and cutting device as claimed in claim 8, wherein: the center line of the first rotating rod (44), the center line of the second rotating rod (51) and the center line of the third rotating rod (61) are parallel, the center line of the first supporting plate (71) is perpendicular to the center line of the first rotating rod (44), the center line of the second supporting plate (73) is parallel to the center line of the first supporting plate (71), the first pushing piece is a third hydraulic cylinder (72) used for pushing the first supporting plate (71) to do linear motion along the direction parallel to the center line of the drill bit (55), and the second pushing piece is a fourth hydraulic cylinder (74) used for pushing the second supporting plate (73) to do linear motion along the direction perpendicular to the center line of the cutting knife (65).