Inner-cooling drilling and milling spindle tool with cavity cleaning structure

Abstract

The utility model relates to the technical field of numerical control machining, in particular to an inner-cooling drilling and milling spindle tool with a cavity cleaning structure, which comprises a spindle core, the right end of the spindle core is connected with the left end of a rotary joint, and a mounting cavity is arranged in the middle of the inner side of the spindle core. The multifunctional tool is extruded towards the blind rivet under the action of axial force from the spring, so that the right end of the blind rivet is tightly attached to the left end of the multifunctional tool, and cooling water in the center hole of the pull rod can directly flow into the center hole of the blind rivet through the center hole of the multifunctional tool and flows into the center hole of the blind rivet through the structure. During the period, the water does not enter a cavity between the pull claw and the shaft core and is directly communicated into a milling cutter inner hole in the drilling and milling cutter handle, so that the water directly acts on a workpiece, the interior of the shaft core is kept dry, and the situation that the shaft core is rusted due to water flow entering is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, in particular to an internally cooled drilling and milling spindle tooling with a cavity cleaning structure. Background Art

[0002] CNC machining refers to a process method for machining parts on CNC machine tools. It is a mechanical machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve problems such as a wide variety of parts, small batches, complex shapes, and high precision, and to achieve efficient and automated machining. However, with the faster and faster processing upgrades of products, more and more deep holes are being machined. How to ensure the machining efficiency of deep holes and clean the drill chips in deep holes has become a top priority. The spindle with a center water outlet structure was born. However, with the continuous use of customers, their requirements for the spindle have gradually increased. Therefore, we have launched an internally cooled drilling and milling spindle tooling with a cavity cleaning structure.

[0003] The existing technology has the following problems: although the current spindle with a center water outlet structure meets the function of center water outlet, the water flow in the cavity between the tool handle and the core shaft will splash everywhere onto the machine tool surface when changing the tool, causing the machine tool environment to be dirty; and when the existing center water outlet spindle is in use, the water flow will enter the cavity between the tool handle and the core shaft through the center hole, which will make the inside of the shaft core difficult to clean and easy to rust, greatly shortening the service life of the core shaft. Utility Model Content

[0004] The purpose of this utility model is to provide an internally cooled drilling and milling spindle fixture with a cavity cleaning structure to address the problems raised in the above-mentioned background art. To achieve the above-mentioned purpose, the utility model provides the following technical solution: an internally cooled drilling and milling spindle fixture with a cavity cleaning structure includes a shaft core, the right end of the shaft core is connected to the left end of the rotary joint, and a mounting cavity is defined in the inner middle portion of the shaft core.

[0005] Further preferably, a pull rod is fixedly installed in the middle of the installation cavity, a plurality of disc springs are sleeved on the outer side of the pull rod, and a spring is provided in the middle of the left end of the pull rod.

[0006] Further preferably, the left end of the spring fits against the right end of the multifunctional tooling, and an elastic structure is formed between the multifunctional tooling and the pull rod via the spring.

[0007] Further preferably, the inner wall of the left end of the pull rod is provided with an internal thread, and the inner wall of the left end of the pull rod is threadedly connected to the right end of the pull claw through the internal thread. The left end of the pull claw is provided with a plurality of hooks, and pull nails are clamped between the plurality of hooks.

[0008] Further preferably, the left end of the pull rivet is connected to the right end of the drilling and milling cutter handle, and the right end of the pull rivet is fitted with the left end of the multifunctional tooling, and the left end of the multifunctional tooling is provided with a nylon plug.

[0009] Further preferably, the left end of the multifunctional tooling passes through the middle of the pulling claw, and the central axis of the multifunctional tooling coincides with that of the pulling claw, and one side of the pulling claw is threadedly connected with a top screw positioning pin.

[0010] Further preferably, the shaft core, rotary joint, pull rod, multifunctional tooling, pull rivet, nylon plug and drilling and milling cutter handle are all provided with a cylindrical center hole in the middle.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In the utility model, the spring is installed in the inner hole of the pull rod, the multifunctional tooling is installed in the pull claw, and then the top screw positioning pin is used to press against the limit groove of the multifunctional tooling to prevent the multifunctional tooling from rotating. Then, the external thread on the outside of the pull claw is threadedly connected with the internal thread on the inner hole wall of the pull rod. At this time, under the action of the spring, the multifunctional tooling will be subjected to the axial force from the spring to squeeze the multifunctional tooling toward the direction of the pull rivet, so that the right end of the pull rivet and the left end of the multifunctional tooling are tightly attached. This structure can make the cooling water in the center hole of the pull rod directly flow into the center hole of the pull rivet through the center hole of the multifunctional tooling, and flow in from the center hole of the pull rivet. During the process, it will not enter the cavity between the pull claw and the shaft core, and is directly connected to the inner hole of the milling cutter in the drilling and milling cutter handle, thereby directly acting on the workpiece, keeping the inside of the shaft core dry, and preventing the shaft core from rusting due to water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the half-section structure of the utility model;

[0016] Figure 4 For this utility model Figure 3 A in the figure is an enlarged structural diagram.

[0017] In the figure: 1. Shaft core; 2. Rotary joint; 3. Mounting cavity; 4. Pull rod; 5. Disc spring; 6. Spring; 7. Multifunctional tooling; 8. Pull claw; 9. Pull pin; 10. Drill and milling cutter handle; 11. Nylon plug; 12. Top screw positioning pin. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] See also Figures 1 to 4 The utility model provides a technical solution: an internally cooled drilling and milling spindle tooling with a cavity cleaning structure, comprising a shaft core 1, the right end of the shaft core 1 is connected to the left end of a rotary joint 2, and an installation cavity 3 is opened in the middle of the inner side of the shaft core 1.

[0020] In this embodiment, Figure 2 、 Figure 3 and Figure 4 As shown, a pull rod 4 is fixedly installed in the middle of the installation cavity 3, and several disc springs 5 ​​are sleeved on the outside of the pull rod 4. A spring 6 is provided in the middle of the left end of the pull rod 4, and the left end of the spring 6 fits with the right end of the multifunctional tooling 7. The multifunctional tooling 7 and the pull rod 4 form an elastic structure through the spring 6. The inner wall of the left end of the pull rod 4 is provided with an internal thread, and the inner wall of the left end of the pull rod 4 is threadedly connected with the right end of the claw 8 through the internal thread. The left end of the claw 8 is provided with several claws, and a pull pin 9 is clamped between the several claws. The middle of the shaft core 1, the rotary joint 2, the pull rod 4, the multifunctional tooling 7, the pull pin 9, the nylon plug 11 and the drilling and milling cutter handle 10 are all provided with a cylindrical center hole; under the action of the spring 6, The multifunctional tooling 7 will be subjected to the axial force from the spring 6 to squeeze the multifunctional tooling 7 toward the pull pin 9, so that the right end of the pull pin 9 is tightly attached to the left end of the multifunctional tooling 7. This structure enables the cooling water in the center hole of the pull rod 4 to flow directly into the center hole of the pull pin 9 through the center hole of the multifunctional tooling 7. During the flow, it will not enter the cavity between the pull claw 8 and the shaft core 1, and will be directly connected to the inner hole of the milling cutter in the drilling and milling cutter handle 10, thereby directly acting on the workpiece, keeping the inside of the shaft core 1 dry, and preventing the shaft core 1 from rusting due to water flow. At the same time, when changing the tool, no large amount of water will be sprayed out from the shaft core 1 to make the machine tool table dirty.

[0021] In this embodiment, Figure 2 、 Figure 3 and Figure 4As shown, the left end of the rivet 9 is connected to the right end of the drilling and milling cutter handle 10, and the right end of the rivet 9 is fitted with the left end of the multifunctional tooling 7, and the left end of the multifunctional tooling 7 is provided with a nylon plug 11; the nylon plug 11 makes the sealing between the multifunctional tooling 7 and the rivet 9 better, preventing water from seeping from the gap between the rivet 9 and the nylon plug 11 into the cavity between the shaft core 1 and the claw 8, the left end of the multifunctional tooling 7 passes through the middle of the claw 8, and the central axis of the multifunctional tooling 7 coincides with the central axis of the claw 8, and a top screw positioning pin 12 is threadedly connected to one side of the claw 8.

[0022] The use method and advantages of the utility model: When the internal cooling drilling and milling spindle fixture with a cavity cleaning structure is used, the working process is as follows:

[0023] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, first connect the rotary joint 2 with the external knife fixing seat, then install the spring 6 into the inner hole of the pull rod 4, install the multifunctional tooling 7 into the pull claw 8, and then use the top screw positioning pin 12 to press against the limit groove of the multifunctional tooling 7 to prevent the multifunctional tooling 7 from rotating, and then thread the external thread on the outside of the pull claw 8 with the internal thread on the inner hole wall of the pull rod 4. At this time, under the action of the spring 6, the multifunctional tooling 7 will be subjected to the axial force from the spring 6 to squeeze the multifunctional tooling 7 toward the direction of the pull pin 9, so that the right end of the pull pin 9 is tightly attached to the left end of the multifunctional tooling 7. This structure can make the cooling water in the center hole of the pull rod 4 directly The water flows into the center hole of the rivet 9 through the center hole of the multifunctional tooling 7, and does not enter the cavity between the pull claw 8 and the shaft core 1 during the process. It is directly connected to the inner hole of the milling cutter in the drilling and milling cutter handle 10, thereby directly acting on the workpiece, keeping the inside of the shaft core 1 dry, and preventing the shaft core 1 from rusting due to water flow entering. At the same time, when changing the tool, a large amount of water will not be sprayed out from the shaft core 1, causing the machine tool table to be dirty. The nylon plug 11 makes the sealing between the multifunctional tooling 7 and the rivet 9 better, and further prevents water from seeping into the cavity between the shaft core 1 and the pull claw 8 from the gap between the rivet 9 and the nylon plug 11.

[0024] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An internally cooled drilling and milling spindle tooling with a cavity cleaning structure, comprising a shaft core (1), characterized in that: The right end of the shaft core (1) is connected to the left end of the rotary joint (2), and a mounting cavity (3) is provided in the middle of the inner side of the shaft core (1).

2. The internally cooled drilling and milling spindle fixture with a cavity cleaning structure according to claim 1, characterized in that: A pull rod (4) is fixedly installed in the middle of the installation cavity (3), a plurality of disc springs (5) are sleeved on the outer side of the pull rod (4), and a spring (6) is provided in the middle of the left end of the pull rod (4).

3. The internally cooled drilling and milling spindle tooling with a cavity cleaning structure according to claim 2 is characterized in that: The left end of the spring (6) fits in with the right end of the multifunctional tooling (7), and an elastic structure is formed between the multifunctional tooling (7) and the pull rod (4) via the spring (6).

4. The internally cooled drilling and milling spindle tooling with a cavity cleaning structure according to claim 3 is characterized in that: The inner wall of the left end of the pull rod (4) is provided with an internal thread, and the inner wall of the left end of the pull rod (4) is threadedly connected to the right end of the pull claw (8) through the internal thread. The left end of the pull claw (8) is provided with a plurality of hook claws, and a pull nail (9) is clamped between the plurality of hook claws.

5. The internally cooled drilling and milling spindle tooling with a cavity cleaning structure according to claim 4 is characterized in that: The left end of the pull nail (9) is connected to the right end of the drilling and milling tool handle (10), and the right end of the pull nail (9) is in contact with the left end of the multifunctional tool (7), and the left end of the multifunctional tool (7) is provided with a nylon plug (11).

6. The internally cooled drilling and milling spindle fixture with a cavity cleaning structure according to claim 5, characterized in that: The left end of the multifunctional tooling (7) passes through the middle of the pull claw (8), and the central axis of the multifunctional tooling (7) coincides with that of the pull claw (8). One side of the pull claw (8) is threadedly connected with a top screw positioning pin (12).

7. The internally cooled drilling and milling spindle tooling with a cavity cleaning structure according to claim 1 is characterized in that: The shaft core (1), the rotary joint (2), the pull rod (4), the multifunctional tooling (7), the pull nail (9), the nylon plug (11) and the drilling and milling cutter handle (10) are all provided with a cylindrical center hole in the middle.

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