Inner-cooling U drill chuck device

Abstract

The utility model belongs to the field of composite material processing devices, and discloses an inner-cooling U drill chuck device which comprises an inner-cooling U drill chuck body, the two ends of the inner-cooling U drill chuck body are a chuck input end and a chuck output end respectively, the chuck input end of the inner-cooling U drill chuck body is connected with a common motor, and the chuck output end of the inner-cooling U drill chuck body is connected with a U drill. A shaft sleeve is arranged on the outer edge of the side close to the input end of the clamping head in a sleeving mode, and a sealing bearing embedded in the circumferential direction of the inner cooling U drill clamping head body is arranged between the shaft sleeve and the inner cooling U drill clamping head body so as to guarantee the air tightness of the whole device. A cooling medium pipeline connecting hole is formed in the side close to the output end of the clamping head. An external pressurized cooling medium pipeline is added through an inner-cooling U drill chuck device, so that a U drill is used in a woodworking machine tool in which a common motor is directly connected with a cutter, and a pressurized cooling medium is introduced into the cutter to forcibly cool a cutting edge of the cutter. The U drill alloy blade is used for replacing a common high-speed steel drill bit, and tool durability is improved.

Description

Technical Field

[0001] The utility model relates to the field of composite material processing devices, and more specifically to an internally cooled U-drill chuck device. Background Art

[0002] In the processing of composite materials (FRP), woodworking machine tools that use ordinary motors directly connected to tools are commonly used. When hole processing is required, ordinary drill bits are severely worn and the processing efficiency is low because the composite materials (FRP) contain a large amount of reinforcing glass fibers. At the same time, ordinary motors cannot change speed and can only process small holes with a diameter of less than 10 mm, with a narrow processing range. As an emerging high-efficiency drilling tool, U drills have the advantages of high speed, large feed, replaceable blades, high efficiency and low cost. They are widely used in various fields of mechanical processing, but they require the introduction of pressurized cooling medium inside during operation, and are rarely used in woodworking machine tools.

[0003] In addition, when composite materials (FRP) are processed using ordinary drill bits, the chip removal is poor and the drill bit needs to be constantly pulled out for chip removal, resulting in low processing efficiency.

[0004] After searching, CN202320164611.4 discloses a dual-spindle flange CNC U drill clamping and positioning mechanism, including: a flange end, an input shaft and a drill clamp seat, the top surface of the flange end is fixedly installed with a fixed cover, the top surface of the flange end is provided with a shaft sleeve and a liquid injection nozzle, the bottom end of the input shaft passes through the inside of the flange end and is sleeved on the inner side of the drill clamp seat, the inner side of the flange end is fixedly installed with a bearing, the inner side of the bearing is fixedly sleeved with a moving shaft sleeve, the surface of the moving shaft sleeve is provided with a threaded end and is threadedly connected with a fastening gland. By setting a separate drill transmission structure, the input shaft and the drill are connected and engaged by the drill clamp seat inside the flange end, and the input shaft drives the drill clamp seat to rotate, and the input shaft can effectively isolate the heat conduction between the drill bit and the electric spindle without affecting the replaceable and removable function of the drill bit, so as to avoid damage to the electric spindle caused by high heat of the drill bit. It is suitable for special electric spindles for CNC machine tools; it requires the use of special materials and components such as special spring chucks and alumina ceramic input shafts, and its use cost is high.

[0005] CN201721828666.1 discloses a U-drill chuck used in a CNC horizontal lathe, which is suitable for a horizontal CNC lathe. The U-drill tool is installed on the machine tool turret and does not rotate and is not suitable for high-speed rotation conditions.

[0006] The above technologies are not suitable for composite material (FRP) processing. Inventing an internally cooled U-drill chuck device that can use a large-diameter U-drill on a woodworking machine with a common motor directly connected to a tool has great practical significance and economic value. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the utility model discloses an internally cooled U-drill chuck device, which can be used on a woodworking machine tool in which an ordinary motor is directly connected to a tool, can be connected to a large-diameter U-drill, expand the drilling diameter range, and improve the drilling efficiency.

[0008] The utility model is realized through the following technical solutions:

[0009] Disclosed is an internally cooled U-drill chuck device, comprising an internally cooled U-drill chuck body, comprising a chuck input end and a chuck output end, wherein the chuck input end of the internally cooled U-drill chuck body is connected to a common motor, and the chuck output end of the internally cooled U-drill chuck body is connected to a U drill; a shaft sleeve is provided on the outer edge sleeve near one side of the chuck input end, and a sealing bearing embedded in the circumference of the internally cooled U-drill chuck body is provided between the shaft sleeve and the internally cooled U-drill chuck body to ensure the air tightness of the entire device; and a cooling medium pipeline connection hole is provided near one side of the chuck output end.

[0010] The internally cooled U-drill chuck device of the utility model can be directly connected to a woodworking machine tool with a tool, and can be used by installing an internally cooled U-drill. When drilling, the motor power is transmitted to the connected internally cooled U-drill through the internally cooled U-drill chuck device, so that it rotates at high speed for processing, and a pressurized cooling medium is continuously introduced during processing to cool the U-drill and force chip removal.

[0011] Furthermore, the inner cavity of the inner-cooled U-drill chuck body is a variable diameter cavity structure; the inner diameter of the inner cavity of the inner-cooled U-drill chuck body near the chuck input end is smaller than the inner diameter of the inner cavity of the inner-cooled U-drill chuck body near the chuck input end. The design of the variable diameter cavity structure can provide installation space, effectively connect the ordinary motor and the U drill, and make the entire device compact and highly reliable.

[0012] Furthermore, a mounting groove is provided on the outer side of the inner cooling U drill chuck body. This structure is used to cooperate with the shaft sleeve to clamp and position the sealing structure.

[0013] Furthermore, the outer side of the internally-cooled U-drill chuck body is also provided with cooling medium pipeline connection holes and connection through holes evenly distributed in the circumferential direction, and the connection through holes are used to connect the internally-cooled U-drill.

[0014] Furthermore, the shaft sleeve includes clamping end surfaces at both ends, and a mounting through hole is provided on the outer side of the shaft sleeve. The mounting through hole is close to the cooling medium pipeline connecting hole to facilitate the connection and fixation of the cooling medium pipeline.

[0015] Furthermore, the inner edge of the clamping end face is stepped, and its inner diameter is larger than the outer diameter of the sealed bearing.

[0016] Furthermore, sealing springs and sealing bearings are provided on both sides of the clamping end surface to fix and limit the clamping end surface.

[0017] Furthermore, the groove pitch of the installation groove is greater than the thickness of the sealing retaining ring.

[0018] Furthermore, a tapered hole matching with a common motor is arranged on the input end of the chuck, and a straight hole matching with an internally-cooled U-drill is arranged on the output end of the chuck.

[0019] Furthermore, the taper of the tapered hole gradually shrinks from the chuck input end toward the straight hole.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] This internally cooled U-drill chuck device can be used on woodworking machines with ordinary motors directly connected to tools. It can be connected to large-diameter U-drills to expand the drilling diameter range, improve drilling efficiency, and have a wider range of applications. This internally cooled U-drill chuck device uses common parts such as ordinary bearings, retaining rings, and sealing rings, which is low in cost and high in efficiency. This internally cooled U-drill chuck device is suitable for U-drills to be installed on the spindle of machine tools and can adapt to high-speed rotation conditions.

[0022] By adding an external pressurized cooling medium pipeline through the internally cooled U-drill chuck device, the U-drill can be used on woodworking machines with ordinary motors directly connected to the tools. The pressurized cooling medium passes through the tool to force the cooling of the tool cutting edge. The use of U-drill alloy blades instead of ordinary high-speed steel drill bits improves the tool durability. The wear resistance of U-drill alloy tools is greatly improved, and forced cooling during cutting improves cutting performance, further extends the tool life, and reduces tool costs.

[0023] The diameter of the large-diameter U drill can reach 30mm, which matches the high speed of ordinary motors and effectively expands the drilling range of the machine tool.

[0024] The pressurized cooling medium that is passed through the tool during drilling can effectively remove the machining chips and form the hole in one go. When drilling holes with a U drill, pressurized cooling medium is passed through the tool to effectively remove the chips. There is no need to remove the drill bit to remove chips, which effectively improves machining efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the internally cooled U-drill chuck device of the utility model.

[0026] Figure 2 It is a schematic diagram of the installation structure of the internally cooled U-drill chuck device of the utility model.

[0027] Figure 3 It is a schematic cross-sectional structure diagram of the internally cooled U-drill chuck device of the utility model.

[0028] Among them, 1-internal cooling U drill chuck body, 11-chuck input end, 12-chuck output end, 13-installation groove, 15-connection through hole, 2-sealed bearing, 3-sleeve, 31-clamping end face, 32-installation through hole, 8-cooling medium pipeline connection hole, 9-sealing retaining spring. DETAILED DESCRIPTION

[0029] In order to facilitate the description and understanding of the present invention, the following Figure 1-Figure 3 The embodiments of the present utility model are described in detail. Example 1

[0030] The internally cooled U-drill chuck device of this embodiment can be connected to an ordinary motor for use, and can be directly connected to a woodworking machine tool with a tool. The device includes an internally cooled U-drill chuck body 1, including a chuck input end 11 and a chuck output end 12. The chuck input end 11 of the internally cooled U-drill chuck body 1 is connected to an ordinary motor, and the chuck output end 12 of the internally cooled U-drill chuck body 1 is connected to a U drill; specifically, the chuck input end 11 is provided with a tapered hole that matches an ordinary motor, and the chuck output end 12 is provided with a straight hole that matches an internally cooled U drill. In this embodiment, the taper of the tapered hole gradually shrinks from the chuck input end 11 to the straight hole direction.

[0031] At the same time, a sleeve 3 is provided on the outer edge of one side near the input end 11 of the chuck, and the sleeve 3 includes a clamping end face 31 at both ends, and a mounting through hole 32 is provided on the outer side of the sleeve 3. The mounting through hole 32 is close to the cooling medium pipeline connection hole 8 to facilitate the connection and fixation of the cooling medium pipeline. The inner edge of the clamping end face 31 is stepped, and its inner diameter is larger than the outer diameter of the sealing bearing 2. Sealing retaining springs 9 and sealing bearings 2 are provided on both sides of the clamping end face 31 to fix and limit the clamping end face 31. A sleeve is provided on the outer cylindrical surface of the internally cooled U-drill chuck body 1, and a sealed bearing is installed in the sleeve. Holes are provided in the diameter direction of the internally cooled U-drill chuck body 1 and the sleeve 3, and the holes are located between the two sealing bearings 2.

[0032] A sealing bearing 2 is provided between the sleeve 3 and the inner-cooled U-drill chuck body 1 and is embedded in the circumference of the inner-cooled U-drill chuck body 1 to ensure the air tightness of the entire device; a cooling medium pipeline connection hole 8 is provided on one side close to the chuck output end 12.

[0033] The inner cavity of the inner-cooled U-drill chuck body 1 is a variable diameter cavity structure; the inner diameter of the inner cavity of the inner-cooled U-drill chuck body 1 near the chuck input end 11 is smaller than the inner diameter of the inner cavity of the inner-cooled U-drill chuck body 1 near the chuck input end 11. The design of the variable diameter cavity structure can provide installation space, effectively connect the ordinary motor and the U drill, and make the whole device compact and highly reliable.

[0034] The outer side of the internally cooled U-drill chuck body 1 is provided with a mounting groove 13, and the groove pitch of the mounting groove 13 is greater than the thickness of the sealing retaining ring 9. The outer side of the internally cooled U-drill chuck body 1 is also provided with cooling medium pipeline connection holes 8 and connection through holes 15 uniformly distributed in the circumferential direction, and the connection through holes 15 are used to connect the internally cooled U-drill.

[0035] The internally cooled U-drill chuck device has an external pressurized cooling medium pipeline, wherein the chuck input end 11 is a tapered hole that matches the ordinary motor, and is also provided with a straight hole that matches the internally cooled U-drill. At the same time, a cooling medium pipeline connection hole 8 connected to the external pressurized cooling medium pipeline is provided on the sleeve 3. The cooling medium pipeline connection hole 8 in this embodiment is a threaded hole. When drilling, the motor power is transmitted to the connected internally cooled U-drill through the internally cooled U-drill chuck device, so that it rotates at high speed for processing, and the pressurized cooling medium is continuously introduced during the processing to cool the U-drill and force chip removal.

[0036] By adding an external pressurized cooling medium pipeline through the internally cooled U-drill chuck device, the U-drill can be used on woodworking machines with ordinary motors directly connected to the tools. The pressurized cooling medium passes through the tool to force the cooling of the tool cutting edge. The use of U-drill alloy blades instead of ordinary high-speed steel drill bits improves the tool durability. The wear resistance of U-drill alloy tools is greatly improved, and forced cooling during cutting improves cutting performance, further extends the tool life, and reduces tool costs.

[0037] The U drill is accurately and firmly connected to the motor shaft through the internal cooling U drill chuck device, and the pressurized cooling medium is continuously introduced to ensure the efficient and stable operation of the U drill. By replacing different U drills, holes with a diameter of 30mm and a hole depth of 280mm can be efficiently processed. The U drill has replaceable blades and does not require sharpening and can be reused. It can improve drilling efficiency, expand the drilling diameter range of machine tools, and reduce tool use costs. At the same time, it has a simple structure and is easy to manufacture.

[0038] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the utility model.

Claims

1. An internally cooled U-drill chuck device, characterized in that: The invention comprises an internally cooled U-drill chuck body (1), wherein two ends of the internally cooled U-drill chuck body (1) are respectively a chuck input end (11) and a chuck output end (12); the chuck input end (11) of the internally cooled U-drill chuck body (1) is connected to a common motor, and the chuck output end (12) of the internally cooled U-drill chuck body (1) is connected to a U drill; a shaft sleeve (3) is provided on the outer edge sleeve of one side close to the chuck input end (11); a sealing bearing (2) is provided between the shaft sleeve (3) and the internally cooled U-drill chuck body (1) and is embedded in the circumference of the internally cooled U-drill chuck body (1) to ensure the air tightness of the entire device; and a cooling medium pipeline connection hole (8) is provided on one side close to the chuck output end (12).

2. The internally cooled U-drill chuck device according to claim 1, characterized in that: The inner cavity of the internally-cooled U-drill chuck body (1) is a variable diameter cavity structure; the inner diameter of the inner cavity of the internally-cooled U-drill chuck body (1) on the side close to the chuck input end (11) is smaller than the inner diameter of the inner cavity of the internally-cooled U-drill chuck body (1) on the side close to the chuck input end (11).

3. The internally cooled U-drill chuck device according to claim 2, characterized in that: A mounting groove (13) is provided on the outer side of the internally cooled U-drill chuck body (1).

4. The internally cooled U-drill chuck device according to claim 3, characterized in that: The outer side of the internally-cooled U-drill chuck body (1) is also provided with cooling medium pipeline connection holes (8) and connection through holes (15) evenly distributed in the circumferential direction, and the connection through holes (15) are used for connecting the internally-cooled U-drill.

5. The internally cooled U-drill chuck device according to claim 4, characterized in that: The shaft sleeve (3) comprises clamping end surfaces (31) at both ends, and a mounting through hole (32) is provided on the outer side of the shaft sleeve (3), wherein the mounting through hole (32) is close to the cooling medium pipeline connection hole (8) so as to be connected and fixed to the cooling medium pipeline.

6. The internally cooled U-drill chuck device according to claim 5, characterized in that: The inner edge of the clamping end surface (31) is stepped, and its inner diameter is larger than the outer diameter of the sealing bearing (2).

7. The internally cooled U-drill chuck device according to claim 6, characterized in that: Sealing springs (9) and sealing bearings (2) are provided on both sides of the clamping end surface (31) to fix and limit the clamping end surface (31).

8. The internally cooled U-drill chuck device according to claim 7, characterized in that: The groove pitch of the installation groove (13) is greater than the thickness of the sealing clamping ring (9).

9. The internally cooled U-drill chuck device according to any one of claims 1 to 8, characterized in that: The chuck input end (11) is provided with a tapered hole matching with a common motor, and the chuck output end (12) is provided with a straight hole matching with an internally cooled U drill.

10. The internally cooled U-drill chuck device according to claim 9, characterized in that: The taper of the tapered hole gradually shrinks from the chuck input end (11) toward the straight hole.

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