Floating cutter handle for wood-working machine

Abstract

The floating knife handle for the wood-working machine comprises a knife handle body, the upper end of the knife handle body is connected with a pop rivet, the lower end of the knife handle body is connected with a knife shaft, a knife handle hollow cavity is formed in the knife handle body, a groove hole is formed in the upper end of the knife shaft, a pin hole corresponding to the groove hole is formed in the side wall of the knife handle body, and a pin is inserted into the pin hole and the groove hole. The cutter shaft is inserted into the hollow cavity of the cutter handle and movably connected with the cutter handle through a pin, and the diameter of the pin is smaller than that of the pin hole and that of the slotted hole, so that the cutter shaft has a displacement space for moving up and down in the hollow cavity of the cutter handle, an elastic piece is arranged in the hollow cavity of the cutter handle, and the upper end of the elastic piece is connected with the top end of the hollow cavity of the cutter handle; when the floating type groove milling machine is used, the groove milling action is floating type cutter feeding, and the cutter shaft can fluctuate up and down along with the unevenness of the working surface, so that the depth of groove holes machined through cutter feeding is consistent, the mortise and tenon splicing precision is greatly improved, and the abrasion of the milling cutter is also reduced.

Description

Technical Field

[0001] The invention relates to a floating tool handle for a woodworking machine, belonging to the technical field of woodworking machines. Background Art

[0002] In the field of woodworking, furniture made with traditional mortise and tenon joint technology has the advantages of tight and firm structure, beautiful appearance and durability. The mortise and tenon joint technology requires very high precision in mechanical processing, but existing woodworking machinery, such as dovetail machines for panel furniture and dovetail slot cutting machines, have various technical defects, such as complicated manufacturing process, low processing precision and low production efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a floating tool handle for woodworking machinery with a novel structure and high processing precision.

[0004] The technical solution of the present invention is: a floating tool handle for woodworking machinery, including a tool handle, a rivet is connected to the upper end of the tool handle, a tool shaft is connected to the lower end of the tool handle, a tool handle hollow cavity is provided inside the tool handle, a slot hole is provided at the upper end of the tool shaft, a pin hole is provided on the side wall of the tool handle corresponding to the slot hole, pins are inserted in the pin hole and the slot hole, the tool shaft is inserted into the hollow cavity of the tool handle and is movably connected to the tool handle through the pin, the diameter of the pin is smaller than the diameter of the pin hole and the slot hole, that is, the pin has displacement space for moving up and down in the pin hole and the slot hole, so that the tool shaft has displacement space for moving up and down in the hollow cavity of the tool handle; an elastic piece is provided in the hollow cavity of the tool handle, the upper end of the elastic piece is connected to the top of the hollow cavity of the tool handle, and the lower end of the elastic piece is connected to the top of the tool shaft.

[0005] Furthermore, a bushing is provided at the lower end of the hollow cavity in the knife handle, the bushing is fixedly connected to the knife handle, a bushing hollow cavity is provided in the middle of the bushing, and the knife shaft passes through the bushing hollow cavity and is movably connected to the knife handle.

[0006] Furthermore, the bushing is made of wear-resistant material.

[0007] Furthermore, a bearing seat is provided at the lower end of the cutter shaft, a nut and a lower baffle are provided in the bearing seat, the lower baffle is fixedly connected to the outer wall of the nut, the upper end surface of the lower baffle is abutted against the inner top surface of the bearing seat, a rotating bearing is provided on the outer wall of the nut, the rotating bearing is located in the bearing hollow cavity of the bearing seat and is fixedly connected to the bearing seat, the lower end of the cutter shaft passes through the bearing seat and is fixedly connected to the nut, the bearing seat is freely rotated relative to the cutter shaft through the rotating bearing, and a slag outlet is provided on the side wall of the bearing seat.

[0008] Furthermore, a stopper is connected to the lower end of the bearing seat.

[0009] Furthermore, the stopper is made of wear-resistant material.

[0010] Furthermore, a connecting piece is provided on the side wall of the bearing seat, and a through hole is provided on the connecting piece, the through hole is communicated with the interior of the bearing seat, and an external ventilation pipe is connected to the through hole of the connecting piece.

[0011] When wood is processed by woodworking machinery, the milling cutter handle and cutter shaft in the prior art are fixed after adjusting the angle and height, and the height cannot be adjusted during feed. The boards or wood strips to be processed often have slight bends or curvatures, so the slots milled out will be of different depths, which not only reduces the mortise and tenon joint accuracy, affects the beauty and service life of the furniture, but also increases the wear rate of the milling cutter. The design key point of the present invention is to improve the milling operation in the existing woodworking machinery from fixed feed to floating feed, and set a hollow cavity and elastic member structure in the handle, so that the cutter shaft has displacement space to move up and down in the hollow cavity of the handle. During the feed processing, the cutter shaft can rise and fall with the unevenness of the working surface (the surface of the board to be processed) to ensure that the slots processed by the feed are of the same depth, which greatly improves the mortise and tenon joint accuracy and reduces the wear of the milling cutter during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structural decomposition of the present invention; Figure 3 It is another structural schematic diagram of the present invention.

[0013] Description of reference numerals: 1 pull nail, 2 knife handle, 201 knife handle hollow cavity, 202 pin hole, 203 elastic member, 204 screw hole, 205 upper protrusion, 3 bushings, 301 bushing hollow cavity, 4 pins, 5 knife shaft, 501 slot, 502 external thread, 503 lower protrusion, 6 Upper baffle, 7 nut, 701 lower baffle, 702 internal thread, 703 rotary bearing, 8 bearing seat, 801 inner top surface, 802 slag outlet, 803 connecting piece, 804 through hole, 805 external ventilation pipe, 9 stops.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0015] See also Figure 1 , Figure 2A floating tool handle for woodworking machinery comprises a tool handle 2, wherein a rivet 1 is threadedly connected to the upper end of the tool handle 2, and the rivet 1 is used to connect with a machining center; a tool handle hollow cavity 201 is provided inside the tool handle 2, and the lower end of the tool handle hollow cavity 201 to the bottom end of the tool handle 2 is in the shape of a through hole; a bushing 3 is installed at the lower end of the tool handle hollow cavity 201, and the bushing 3 is made of wear-resistant material graphite. The bushing 3 is fixedly connected to the tool handle 2, and several screw holes 204 can be set on the side wall of the lower end of the tool handle hollow cavity 201, and the bushing 3 is fixedly connected to the tool handle 2 by screws; a tool shaft 5 is installed in the tool handle hollow cavity 201, and a slot hole 501 is provided at the upper end of the tool shaft 5, and a pin hole 202 is provided on the side wall of the tool handle 2 corresponding to the slot hole 501, and the tool shaft 5 first passes through the bushing hollow cavity 301, and then is inserted into the tool handle hollow cavity 201, and a pin 4 is inserted into the pin hole 202 and the slot hole 501, and the through hole 501 is inserted into the pin hole 202. The knife shaft 5 is movably connected to the knife handle 2 through the pin 4, and the diameter of the pin 4 is smaller than the diameters of the pin hole 202 and the slot hole 501, that is, the pin 4 has a displacement space that can move up and down in the pin hole 202 and the slot hole 501, that is to say, the knife shaft 5 has a displacement space that can move up and down in the hollow cavity 201 of the knife handle, and this displacement space can be set at a distance of about 5 mm; the knife shaft 5 is installed in the knife handle 2, and there is still a space between the top end of the knife shaft 5 and the top end of the hollow cavity 201 of the knife handle. An elastic member 203, such as a compression spring, is arranged in this space. The upper end of the compression spring is connected to the top end of the hollow cavity 201 of the knife handle, and the lower end of the compression spring is connected to the top end of the knife shaft 5. An upper protrusion 205 can be arranged at the top end of the hollow cavity 201 of the knife handle, and a lower protrusion 503 can be arranged at the top end of the knife shaft 5, and the compression spring is installed using the upper protrusion 205 and the lower protrusion 503.

[0016] In order to better use the floating tool handle of the present invention, a bearing seat 8 can also be provided at the lower end of the tool shaft 5. Figure 1 , Figure 2As shown, a nut 7 and a lower baffle 701 are provided in the bearing seat 8, the lower baffle 701 is fixedly connected to the outer wall of the nut 7, the upper end surface of the lower baffle 701 abuts against the inner top surface 801 of the bearing seat 8, and a rotating bearing 703 is movably sleeved on the outer wall of the nut 7. The rotating bearing 703 can adopt an angular contact bearing. The rotating bearing 703 is located in the bearing mounting cavity of the bearing seat 8 and is fixedly connected to the bearing seat 8. An external thread 502 is provided at the lower end of the knife shaft 5, and an upper baffle 6 is provided between the knife shaft 5 and the bearing seat 8. The lower end of the knife shaft 5 passes through the upper baffle 6, the bearing seat 8, and the rotating bearing 703, and is fixedly connected to the internal thread 702 of the nut 7. The upper baffle 6 is fixedly connected to the bearing seat 8 by screws. When in use, the bearing seat 8 can rotate freely relative to the knife shaft 5 through the rotating bearing 703, and a plurality of slag outlets 802 are provided on the side wall of the bearing seat 8. The function of the bearing seat 8 is to provide a stable and firm support force to the floating knife handle, assist in bearing force during the cutting process of the equipment, and absorb part of the friction resistance through the rotating bearing 703 installed in the bearing seat 8. In order to reduce friction and protect the bearing seat 8, a stopper 9 can also be set on the lower end surface of the bearing seat 8. The stopper 9 is a wear-resistant material, such as a polymer rubber block, etc. The stopper 9 is fixedly connected to the bearing seat 8.

[0017] In some embodiments, a connecting piece 803 may be provided on the side wall of the bearing seat 8, see Figure 3 As shown, a through hole 804 is provided on the connecting piece 803 , and the through hole 804 is communicated with the interior of the bearing seat 8 . An external ventilation pipe 805 is connected to the connecting piece 803 via a threaded structure, and the external ventilation pipe 805 is communicated with the through hole 804 .

[0018] The usage is briefly described as follows: Install the milling cutter at the lower end of the cutter shaft 5, install the floating cutter handle on the woodworking machining center through the rivet 1, place the plate to be processed on the workbench, adjust the angle and height of the floating cutter handle, so that the bearing seat 8 at the lower end of the cutter handle 2 contacts the plate surface. Start the equipment to perform milling. During the processing, the bearing seat 8 is always pressed on the plate surface. Under the action of the rotating bearing 703, the bearing seat 8 can be appropriately rotated relative to the cutter shaft 5 (milling cutter), and cooperate with the milling cutter to perform the milling action forward, backward, left and right, and always give the floating cutter handle a stable and firm support force. When the plate surface has a height or curvature change (generally speaking, the height change is about <5mm), since the cutter shaft 5 can float up and down, with the support of the bearing seat 8, the depth of the milling groove will always remain consistent, and there will be no uneven depth, and the milling cutter will not be excessively worn due to being inserted too deep into the plate surface, which well guarantees the processing accuracy and extends the service life of the milling cutter.

[0019] During the processing, the milled wood chips are discharged through the slag outlet 802. In some embodiments, an external ventilation pipe 805 can be set on the side wall of the bearing seat 8, and a blowing device is connected to the external ventilation pipe 805 (for example, compressed air can be connected through a pressure regulating valve, etc.). This can better discharge the wood chips and improve the processing accuracy.

Claims

1. A floating tool handle for a woodworking machine, comprising a tool handle (2), a rivet (1) connected to the upper end of the tool handle (2), and a tool shaft (5) connected to the lower end of the tool handle (2), characterized in that: A handle hollow cavity (201) is provided inside the handle (2), a slot hole (501) is provided at the upper end of the handle shaft (5), a pin hole (202) is provided on the side wall of the handle (2) corresponding to the slot hole (501), the handle shaft (5) is inserted into the handle hollow cavity (201) and is movably connected to the handle (2) by inserting a pin (4) into the pin hole (202) and the slot hole (501), the diameter of the pin (4) is smaller than the diameter of the pin hole (202) and the slot hole (501), that is, the pin (4) has a displacement space for moving up and down in the pin hole (202) and the slot hole (501), so that the handle shaft (5) has a displacement space for moving up and down in the handle hollow cavity (201); An elastic member (203) is provided in the hollow cavity (201) in the knife handle, the upper end of the elastic member (203) is connected to the top end of the hollow cavity (201) in the knife handle, and the lower end of the elastic member (203) is connected to the top end of the knife shaft (5).

2. The floating tool handle for woodworking machinery according to claim 1, characterized in that: A bushing (3) is provided at the lower end of the hollow cavity (201) of the knife handle, the bushing (3) is fixedly connected to the knife handle (2), a bushing hollow cavity (301) is provided in the middle of the bushing (3), and the knife shaft (5) passes through the bushing hollow cavity (301) and is movably connected to the knife handle (2).

3. The floating tool handle for woodworking machinery according to claim 2, characterized in that: The bushing (3) is made of wear-resistant material.

4. The floating tool handle for woodworking machinery according to claim 1, characterized in that: A bearing seat (8) is provided at the lower end of the knife shaft (5), a nut (7) and a lower baffle (701) are provided in the bearing seat (8), the lower baffle (701) is fixedly connected to the outer wall of the nut (7), the upper end surface of the lower baffle (701) is in contact with the inner top surface (801) of the bearing seat (8), a rotary bearing (703) is provided on the outer wall of the nut (7), the rotary bearing (703) is located in the bearing hollow cavity of the bearing seat (8) and is fixedly connected to the bearing seat (8), the lower end of the knife shaft (5) passes through the bearing seat (8) and is fixedly connected to the nut (7), the bearing seat (8) is freely rotatable relative to the knife shaft (5) through the rotary bearing (703), and a slag outlet (802) is provided on the side wall of the bearing seat (8).

5. The floating tool handle for woodworking machinery according to claim 4, characterized in that: A stopper (9) is connected to the lower end of the bearing seat (8).

6. The floating tool handle for woodworking machinery according to claim 5, characterized in that: The stopper (9) is made of wear-resistant material.

7. The floating tool handle for woodworking machinery according to claim 4, characterized in that: A connecting piece (803) is provided on the side wall of the bearing seat (8), a through hole (804) is provided on the connecting piece (803), the through hole (804) is communicated with the interior of the bearing seat (8), and an external ventilation pipe (805) is connected to the through hole (804) of the connecting piece (803).

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