Numerical control drilling machine with optimized cooling mechanism

Abstract

The utility model relates to the field of numerical control drilling machines, in particular to a numerical control drilling machine with an optimized cooling mechanism, which comprises a workbench, a lifting mechanism, a spindle driving mechanism, a sliding seat, a drill bit, an upper guide sleeve and a lower splash-proof sleeve, the upper guide sleeve and the lower splash-proof sleeve are nested with each other and surround the drill bit in the middle, and cooling liquid is sprayed out from the inner wall of the splash-proof sleeve. The drill is cooled. The lower splash-proof sleeve completely surrounds the drill bit, cooling liquid is prevented from splashing, and environmental pollution is reduced; when the cooling liquid finally flows out of the liquid outlet hole, the pressure of the cooling liquid pushes the lower splash-proof sleeve to extend out relative to the upper guide sleeve, and when the drill bit and the lower splash-proof sleeve make contact with the workpiece to be machined, the acting force generated by the workpiece to be machined easily counteracts the thrust generated by the cooling liquid, the lower splash-proof sleeve can be jacked back, and deep punching of the drill bit is not hindered at all.

Description

Technical Field

[0001] The utility model belongs to the field of numerical control drilling machines, in particular to a numerical control drilling machine with an optimized cooling mechanism. Background Art

[0002] CNC drilling machines are mainly used for drilling, reaming, boring and tapping. During processing, existing CNC drilling machines need to spray cooling water on the drill bit to cool the drill bit and the workpiece being processed. However, the existing drill bit is in a state of rapid rotation during processing, causing cooling water to splash around. Since the CNC drilling machine has a glass protective cover on the outside, although closing the glass protective cover will not interfere with the operator and environment outside the machine tool, the coolant will still significantly pollute the internal environment of the drilling machine. Utility Model Content

[0003] The utility model aims to provide a numerical control drilling machine with an optimized cooling mechanism capable of reducing splashing of coolant.

[0004] To achieve the above-mentioned purpose, the utility model provides a CNC drilling machine with an optimized cooling mechanism, comprising a workbench, a lifting mechanism, a spindle drive mechanism, a slide and a drill bit, the CNC drilling machine also comprising an upper guide sleeve and a lower splash-proof sleeve, the upper guide sleeve being fixed to the bottom of the slide and surrounding the drill bit, the upper guide sleeve comprising an inner and outer two-layer side wall, a side surface of the upper guide sleeve being provided with a liquid inlet for a coolant, the lower splash-proof sleeve comprising an inner and outer two-layer side wall, a sealing plate being provided at the bottom of the lower splash-proof sleeve to seal the area between the two side walls, The upper end of the lower splash-proof sleeve is open, and the upper end of the lower splash-proof sleeve is inserted between the inner and outer side walls of the upper guide sleeve. Under the restriction of the upper guide sleeve, the lower splash-proof sleeve can only be raised and lowered. The lower splash-proof sleeve is provided with a liquid outlet and a limiter on the inner side. The coolant first enters the upper guide sleeve, then enters the lower splash-proof sleeve, and finally sprays out from the liquid outlet and contacts the drill bit or the workpiece to be processed. A rope is provided between the limiter and the slide seat. When the rope is straightened, it ensures that the lower splash-proof sleeve cannot separate from the upper guide sleeve.

[0005] As an improvement of the above solution, a plurality of liquid outlet holes are evenly arranged around the drill bit.

[0006] As an improvement of the above solution, at least two limiting members are provided, and the limiting members are evenly distributed around the drill bit to ensure force balance.

[0007] As an improvement of the above solution, the rope is an elastic rope, and the head and tail ends of the rope are respectively fixed to the sliding seat and the inner wall of the lower splash-proof sleeve by bolts.

[0008] As an improvement of the above solution, the cross-sections of the upper guide sleeve and the lower splash-proof sleeve are both circular.

[0009] As an improvement of the above solution, the outer side wall of the lower splash-proof sleeve is provided with a circle of annular grooves, and a sealing ring is provided in the annular grooves. When the lower splash-proof sleeve is extended and retracted relative to the upper guide sleeve, the sealing ring follows the lower splash-proof sleeve to rise and fall.

[0010] The utility model has the following beneficial effects: the lower splash-proof sleeve fully surrounds the drill bit to prevent coolant from splashing and reduce environmental pollution; when the coolant finally flows out of the liquid outlet, the pressure of the coolant will push the lower splash-proof sleeve to extend relative to the upper guide sleeve, and when the drill bit and the lower splash-proof sleeve contact the workpiece to be processed, the force generated by the workpiece to be processed can easily offset the thrust generated by the coolant, so the lower splash-proof sleeve can be pushed back without hindering the drill bit from drilling deeply. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is an appearance diagram of a CNC drilling machine under an embodiment;

[0012] Figure 2 is a cross-sectional view of a drill bit region of an embodiment;

[0013] Figure 3 The diagram is a schematic diagram of the cooperation between the upper guide sleeve and the lower splash-proof sleeve in an embodiment.

[0014] Explanation of the reference numerals: 11, workbench; 12, lifting mechanism; 21, slide seat; 22, drill bit; 31, upper guide sleeve; 32, lower splash-proof sleeve; 41, liquid inlet; 42, liquid outlet; 43, rope. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0018] Reference Figures 1 to 3 The utility model discloses a CNC drilling machine with an optimized cooling mechanism, including a workbench 11, a lifting mechanism 12, a spindle drive mechanism, a slide 21 and a drill 22. The lifting mechanism 12 is used to drive the slide 21 and the drill 22 to rise and fall in the Z-axis direction, the spindle drive mechanism is used to rotate the drill 22, and the workbench 11 can move freely in the XY directions. The other structures of the CNC drilling machine refer to the prior art. Figure 1 As shown, the workbench 11 is also provided with a perforated plate for mounting a universal fixture.

[0019] The CNC drilling machine also includes an upper guide sleeve 31 and a lower splash sleeve 32. The upper guide sleeve 31 is fixed to the bottom of the slide 21 and surrounds the drill bit 22. The upper guide sleeve 31 includes an inner and outer side wall. The side of the upper guide sleeve 31 is provided with a coolant inlet 41. The lower splash sleeve 32 includes an inner and outer side wall. The bottom of the lower splash sleeve 32 is provided with a sealing plate to seal the area between the two side walls. The upper end of the lower splash sleeve 32 is open, and the upper end of the lower splash sleeve 32 is inserted into the upper guide sleeve 3 1, under the restriction of the upper guide sleeve 31, the lower splash-proof sleeve 32 can only be raised and lowered, and the lower splash-proof sleeve 32 is provided with a liquid outlet 42 and a limiter on the inner side. The coolant first enters the upper guide sleeve 31, then enters the lower splash-proof sleeve 32, and finally sprays out from the liquid outlet 42 and contacts the drill bit 22 or the workpiece to be processed. A rope 43 is provided between the limiter and the slide seat 21. When the rope 43 is straightened, it ensures that the lower splash-proof sleeve 32 cannot be separated from the upper guide sleeve 31.

[0020] The lower splash-proof sleeve 32 completely surrounds the drill bit 22 to prevent coolant from splashing and reduce environmental pollution. When the coolant finally flows out of the liquid outlet 42, the pressure of the coolant will push the lower splash-proof sleeve 32 to extend relative to the upper guide sleeve 31. When the drill bit 22 and the lower splash-proof sleeve 32 contact the workpiece to be processed, the force generated by the workpiece to be processed can easily offset the thrust generated by the coolant, and then push the lower splash-proof sleeve 32 back, without hindering the drill bit 22 from drilling deeply.

[0021] As an improvement of the above solution, a plurality of the liquid outlet holes 42 are evenly arranged around the drill bit 22. The above solution ensures uniform spraying. At the same height, two liquid outlet holes 42 can be arranged at symmetrical positions, and at different heights, another pair of the liquid outlet holes 42 is deflected by 90°, so as to realize three-dimensional flushing of the drill bit 22 at four angles and two heights.

[0022] As an improvement of the above solution, at least two limiting members are provided, and the limiting members are evenly distributed around the drill bit 22 and are respectively in symmetrical positions to ensure force balance.

[0023] As an improvement of the above solution, the rope 43 is an elastic rope, and the first and second ends of the rope 43 are respectively fixed to the inner wall of the slide seat 21 and the lower splash-proof sleeve 32 by bolts. In one embodiment, a screw hole is provided on the surface of the slide seat 21, and after the end of the rope 43 is inserted into the screw hole, the bolt is screwed into the screw hole to achieve locking.

[0024] As an improvement of the above solution, the cross-sections of the upper guide sleeve 31 and the lower splash-proof sleeve 32 are both circular, and correspondingly, the inner and outer side walls are both cylindrical, and their ends are connected and fixed to each other.

[0025] As an improvement of the above solution, the outer side wall of the lower splash-proof sleeve 32 is provided with a circle of annular grooves, and a sealing ring is provided in the annular grooves, and when the lower splash-proof sleeve 32 is extended and retracted relative to the upper guide sleeve 31, the sealing ring rises and falls with the lower splash-proof sleeve 32. The above solution is adopted to reduce the leakage of coolant from other places.

[0026] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A CNC drilling machine with an optimized cooling mechanism, comprising a workbench, a lifting mechanism, a spindle drive mechanism, a slide seat and a drill bit, characterized in that: The CNC drilling machine also includes an upper guide sleeve and a lower splashproof sleeve, wherein the upper guide sleeve is fixed to the bottom of the slide seat and surrounds the drill bit, the upper guide sleeve includes an inner and outer side walls, the side of the upper guide sleeve is provided with a liquid inlet for coolant, and the lower splashproof sleeve includes an inner and outer side walls, and the bottom of the lower splashproof sleeve is provided with a sealing plate to seal the area between the two side walls. The upper end of the lower splashproof sleeve is open, and the upper end of the lower splashproof sleeve is inserted between the inner and outer side walls of the upper guide sleeve. Under the restriction of the upper guide sleeve, the lower splashproof sleeve can only be raised and lowered, and the lower splashproof sleeve is provided with a liquid outlet and a limiting member on the inner side. The coolant first enters the upper guide sleeve, then enters the lower splashproof sleeve, and finally sprays out from the liquid outlet and contacts the drill bit or the workpiece to be processed. A rope is provided between the limiting member and the slide seat. When the rope is straightened, it is ensured that the lower splashproof sleeve cannot separate from the upper guide sleeve.

2. The CNC drilling machine with optimized cooling mechanism according to claim 1, characterized in that: A plurality of the liquid outlet holes are evenly arranged around the drill bit.

3. The CNC drilling machine with optimized cooling mechanism according to claim 2, characterized in that: At least two limiting members are provided, and the limiting members are evenly distributed around the drill bit to ensure force balance.

4. The CNC drilling machine with optimized cooling mechanism according to claim 3, characterized in that: The rope is an elastic rope, and the head and tail ends of the rope are respectively fixed to the slide seat and the inner wall of the lower splash-proof sleeve by bolts.

5. The CNC drilling machine with optimized cooling mechanism according to claim 1, characterized in that: The cross sections of the upper guide sleeve and the lower splash-proof sleeve are both circular.

6. The CNC drilling machine with optimized cooling mechanism according to claim 5, characterized in that: The outer side wall of the lower splash-proof sleeve is provided with an annular groove, and a sealing ring is provided in the annular groove. When the lower splash-proof sleeve is extended and retracted relative to the upper guide sleeve, the sealing ring rises and falls with the lower splash-proof sleeve.

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