Universal milling head with damping function

Abstract

The utility model discloses a kind of universal milling heads with shock-absorbing function, it relates to universal milling head technical field, including base, vertical installation pipe, horizontal installation pipe and adjusting pipe, the base top end is connected with vertical installation pipe by bolt damping structure, the vertical installation pipe top end is connected with horizontal installation pipe, the horizontal installation pipe is connected with adjusting pipe by bolt damping structure, the adjusting pipe is connected with milling head assembly away from horizontal installation pipe one end, filling damping structure is arranged in the vertical installation pipe and horizontal installation pipe, the base outside is connected with protective shell by connecting structure, the bolt damping structure includes screw head, screw rod, RTV silica gel layer, nut and RTV silica gel annular pad.The universal milling head with shock-absorbing function, by the synergistic effect of bolt damping structure and filling damping structure, to improve damping effect, improve noise reduction effect by protective shell, by connecting structure, it is convenient to disassemble protective shell.

Description

Technical Field

[0001] This utility model relates to the field of universal milling head technology, specifically a universal milling head with shock absorption function. Background Technology

[0002] The universal milling head is a core functional component of a five-axis linkage machining center. Its core value lies in enabling flexible adjustment of the tool's spatial posture to meet the high-precision machining requirements of complex curved surfaces (such as aero-engine blades, ship propellers, and automotive molds).

[0003] Referring to Chinese Patent Publication No. CN210254444U, published on April 7, 2020, a universal milling head is disclosed, comprising: a base, a first circular groove on the top side of the base, in which several first bolts are engaged; a first ring frame with several first through holes fixedly connected to the bottom of a vertical mounting bracket, the threaded end of each first bolt being threaded through the first through hole and screwed with a first nut; a second circular groove on the right side of a horizontal mounting bracket, in which several second bolts are engaged; a second ring frame with several second through holes fixedly connected to the left side of an adjusting tube, the threaded end of each second bolt being threaded through the second through hole and screwed with a second nut; a milling head fixedly connected to the right end of the adjusting tube; a rotating shaft rotatably connected to the bottom of the milling head; and a milling cutter fixedly connected to the bottom of the rotating shaft. This utility model relates to the field of milling cutters and can arbitrarily adjust the direction of the milling cutter to process workpieces according to actual needs.

[0004] The existing technology has the following technical problems: the vibration reduction and noise reduction effect of the existing universal milling head needs to be improved; therefore, we propose a universal milling head with vibration reduction function to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a universal milling head with vibration damping function to solve the problem mentioned in the background art that the vibration damping and noise reduction effect of existing universal milling heads needs to be improved.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a universal milling head with shock absorption function, comprising a base, a vertical mounting tube, a horizontal mounting tube, and an adjusting tube. The top of the base is connected to the vertical mounting tube via a bolt shock absorption structure. The top of the vertical mounting tube is connected to the horizontal mounting tube. The horizontal mounting tube is connected to the adjusting tube via a bolt shock absorption structure. A milling head assembly is connected to the end of the adjusting tube away from the horizontal mounting tube. A filling shock absorption structure is provided inside the vertical and horizontal mounting tubes. A protective shell is connected to the outside of the base via a connecting structure.

[0007] The bolt vibration damping structure includes a screw head, a screw rod, an RTV silicone layer, a nut, and an RTV silicone annular gasket. The outer side of the screw rod is coated with an RTV silicone layer. An RTV silicone annular gasket is provided between the screw head and the plate. An RTV silicone annular gasket is provided between the nut and the plate.

[0008] Preferably, the filling damping structure includes a first elastic plug, a second elastic plug, and a filler, wherein the first elastic plug and the second elastic plug are filled with the filler.

[0009] Preferably, the first elastic plug is fixed to the bottom inside of the vertical installation pipe and the left inside of the horizontal installation pipe, respectively.

[0010] Preferably, the second elastic plug is fixed to the top of the inner side of the vertical installation pipe and the right end of the inner side of the horizontal installation pipe.

[0011] Preferably, the protective shell includes an inner layer, a middle layer, and an outer layer, and the protective shell is provided with an inner layer, a middle layer, and an outer layer from the inside to the outside.

[0012] Preferably, the connection structure includes a connecting plate and connecting bolts, wherein the connecting plate is provided with connecting bolts and the connecting plate is fixedly connected to the outer layer.

[0013] Preferably, a screw is fixedly connected to one end of the screw head, and a nut is threaded onto the outer side of the screw.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the universal milling head with shock absorption function improves the shock absorption effect through the synergistic effect of the bolt shock absorption structure and the filling shock absorption structure, improves the noise reduction effect through the protective shell, and facilitates the disassembly of the protective shell through the connection structure.

[0015] 1. It is equipped with a bolt damping structure and a filling damping structure. The outer side of the bolt damping screw is coated with an RTV silicone layer. RTV silicone pads are placed between the bolt head and the plate, and between the nut and the plate. RTV silicone has good damping and sealing properties, thereby improving the damping effect.

[0016] Furthermore, the first and second elastic plugs of the damping structure are both made of oil-resistant nitrile rubber or fluororubber, and tungsten alloy microspheres and graphite powder are filled between the two plugs to improve the airtightness of the damper, thereby improving the damping effect.

[0017] 2. It is equipped with a protective shell and connecting structure. The inner, middle and outer layers are made of stainless steel or aluminum alloy corrugated plate, high damping butyl rubber-aluminum foil restraint layer and open-cell polyurethane foam, respectively. The functions are to resist impact and prevent chipping, absorb vibration and sound insulation, attract and reduce noise. Using this three-layer composite wall, the noise reduction effect is improved.

[0018] Furthermore, the protective shell is composed of two semi-circular rings, and a connecting plate is fixedly connected to the outer side of the two semi-circular rings. The two semi-circular rings are fixedly connected by connecting bolts, so that the protective shell is fixed to the outside of the pipe wall, thereby improving the noise reduction effect. The protective shell is installed through this connection structure, making it easy to disassemble. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure between the protective shell and each pipe of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0023] Figure 5 This is a schematic diagram of the protective shell structure of this utility model.

[0024] In the diagram: 1. Base; 2. Vertical mounting tube; 3. Horizontal mounting tube; 4. Adjusting tube; 5. Milling head assembly; 6. Bolt damping structure; 601. Screw head; 602. Screw; 603. RTV silicone layer; 604. Nut; 605. RTV silicone ring gasket; 7. Filling damping structure; 701. First elastic plug; 702. Second elastic plug; 703. Filler; 8. Protective shell; 801. Inner layer; 802. Middle layer; 803. Outer layer; 9. Connecting structure; 901. Connecting plate; 902. Connecting bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 5 The present invention provides the following technical solution:

[0027] A universal milling head with shock absorption function includes a base 1, a vertical mounting tube 2, a horizontal mounting tube 3, and an adjusting tube 4. The top of the base 1 is connected to the vertical mounting tube 2 via a bolt shock absorption structure 6. The top of the vertical mounting tube 2 is connected to the horizontal mounting tube 3. The horizontal mounting tube 3 is connected to the adjusting tube 4 via the bolt shock absorption structure 6. A milling head assembly 5 is connected to the end of the adjusting tube 4 away from the horizontal mounting tube 3. A filling shock absorption structure 7 is provided inside the vertical mounting tube 2 and the horizontal mounting tube 3. A protective shell 8 is connected to the outside of the base 1 via a connecting structure 9.

[0028] like Figure 1 - Figure 4 As shown, the base 1 and the vertical mounting tube 2, and the horizontal mounting tube 3 and the adjusting tube 4 are all fixedly connected by the bolt vibration damping structure 6. The bolt vibration damping structure 6 includes a screw head 601, a screw rod 602, an RTV silicone layer 603, a nut 604, and an RTV silicone ring washer 605. The screw rod 602 is coated with an RTV silicone layer 603 on the outside, so that a viscoelastic ring can be formed between the screw rod 602 and the wall of the connecting hole, cutting off the transmission of transverse vibration and playing a role in radial micro-vibration isolation.

[0029] An RTV silicone ring washer 605 is provided between the screw head 601 and the plate. After the screw 602 is pre-tightened, the RTV silicone ring washer 605 is compressed by 20%~30%, forming a high-damping shear layer. The viscoelastic properties of the RTV silicone ring washer 605 provide continuous rebound force, reduce the attenuation of pre-tightening force, and increase the anti-loosening torque by 25%, thereby improving the anti-loosening effect. An RTV silicone ring washer 605 is provided between the nut 604 and the plate, forming a "double shear damping" symmetrical structure with the RTV silicone ring washer 605 of the screw head 601, which suppresses the bidirectional bending vibration of the plate, thereby improving the vibration reduction effect.

[0030] like Figure 3 As shown, a damping structure 7 is provided inside the vertical mounting pipe 2 and the horizontal mounting pipe 3. The damping structure 7 includes a first elastic plug 701, a second elastic plug 702, and a filler 703. The first elastic plug 701 and the second elastic plug 702 are filled with the filler 703. Both the first elastic plug 701 and the second elastic plug 702 are made of high-damping oil-resistant nitrile rubber (or high-temperature resistant fluororubber). Tungsten alloy microspheres and graphite powder are filled between the two plugs to form a "labyrinth-viscoelastic" composite seal, which improves the airtightness of the damper and thus improves the damping effect.

[0031] like Figure 1 , Figure 2 and Figure 5As shown, protective shells 8 are installed on the outer sides of the base 1, vertical mounting tube 2, horizontal mounting tube 3, adjusting tube 4, and milling head assembly 5. The protective shell 8 consists of an inner layer 801, a middle layer 802, and an outer layer 803 from the inside out. The inner layer 801 uses open-cell polyurethane foam to form a broadband sound-absorbing layer. The middle layer 802 uses a high-damping butyl rubber-aluminum foil constraint layer, which absorbs vibration and insulates sound. The outer layer 803 uses stainless steel or aluminum alloy corrugated plate, which is impact-resistant and chip-proof. This structure forms a protective-soundproof cover, thereby improving the noise reduction effect.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, the connecting structure 9 includes a connecting plate 901 and a connecting bolt 902. The protective shell 8 is composed of two semi-circular rings, each of which is fixedly connected to the outer side of the connecting plate 901. The two semi-circular rings are snapped onto the outer side of the mounting tube, the two connecting plates 901 are aligned, and the connecting bolt 902 is used for fixed connection. The protective shell 8 can be disassembled by removing the connecting bolt 902, making the protective shell 8 easy to disassemble and assemble.

[0033] The above completes a series of operations for the universal milling head with vibration damping function. The contents not described in detail in this instruction are existing technologies known to those skilled in the art.

[0034] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A universal milling head with shock absorption function, comprising a base (1), a vertical mounting tube (2), a horizontal mounting tube (3), and an adjusting tube (4), characterized in that: The top of the base (1) is connected to a vertical mounting tube (2) via a bolt damping structure (6). The top of the vertical mounting tube (2) is connected to a horizontal mounting tube (3). The horizontal mounting tube (3) is connected to an adjusting tube (4) via a bolt damping structure (6). The end of the adjusting tube (4) away from the horizontal mounting tube (3) is connected to a milling head assembly (5). The vertical mounting tube (2) and the horizontal mounting tube (3) are provided with a filling damping structure (7). The outer side of the base (1) is connected to a protective shell (8) via a connecting structure (9). The bolt vibration damping structure (6) includes a screw head (601), a screw rod (602), an RTV silicone layer (603), a nut (604), and an RTV silicone ring washer (605). The screw rod (602) is coated with an RTV silicone layer (603) on the outside. An RTV silicone ring washer (605) is provided between the screw head (601) and the plate. An RTV silicone ring washer (605) is provided between the nut (604) and the plate.

2. The universal milling head with vibration damping function according to claim 1, characterized in that: The filling damping structure (7) includes a first elastic plug (701), a second elastic plug (702) and a filler (703), wherein the first elastic plug (701) and the second elastic plug (702) are filled with the filler (703).

3. A universal milling head with vibration damping function according to claim 2, characterized in that: The first elastic plug (701) is fixed to the bottom inside of the vertical installation pipe (2) and the left inside of the horizontal installation pipe (3).

4. A universal milling head with vibration damping function according to claim 2, characterized in that: The second elastic plug (702) is fixed to the top of the inside of the vertical installation pipe (2) and the right end of the inside of the horizontal installation pipe (3).

5. A universal milling head with vibration damping function according to claim 1, characterized in that: The protective shell (8) includes an inner layer (801), a middle layer (802) and an outer layer (803), and the protective shell (8) is provided with an inner layer (801), a middle layer (802) and an outer layer (803) from the inside to the outside.

6. A universal milling head with vibration damping function according to claim 1, characterized in that: The connection structure (9) includes a connecting plate (901) and a connecting bolt (902). The connecting plate (901) is provided with the connecting bolt (902), and the connecting plate (901) is fixedly connected to the outer layer (803).

7. A universal milling head with vibration damping function according to claim 1, characterized in that: One end of the screw head (601) is fixedly connected to a screw rod (602), and a nut (604) is threadedly connected to the outside of the screw rod (602).

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