Chip removal mechanism for numerical control gantry milling machine

Abstract

The utility model discloses a chip removal mechanism for a numerical control gantry milling machine, which relates to the field of numerical control gantry milling machines and comprises a negative pressure pipe head, the bottom end of the negative pressure pipe head is slidably connected with a blocking ring along the vertical direction, the bottom surface of the blocking ring is contacted with the surface of a workpiece, and the surface of the blocking ring is provided with a plurality of ventilation ports for ventilation. A constant-pressure air inlet assembly is arranged at the ventilation opening. When the milling range of the milling cutter does not exceed the blocking ring, the bottom face of the blocking ring makes contact with the surface of a workpiece, cuttings cannot fly out, air enters the blocking ring through the ventilation openings in the blocking ring at the moment, and air enters the bottom end of the blocking ring from the groove after the surface of the workpiece is cut into the groove along with movement of the milling cutter. And the baffle at the ventilation opening is closed by the elastic force of the torsion spring, and air enters the blocking ring from the groove to form an air curtain, so that cuttings are effectively prevented from flying out along the milled groove.

Description

Technical Field

[0001] The utility model relates to the field of numerical control gantry milling, in particular to a chip removal mechanism for numerical control gantry milling. Background Art

[0002] The CNC gantry milling machine consists of a portal frame, a bed workbench and an electrical control system. The portal frame is composed of columns and top beams, with a crossbeam in the middle. The crossbeam has at least one milling head with a vertical spindle that can move laterally along the crossbeam guide rail.

[0003] The chip removal mechanism of the existing CNC gantry milling machine includes a negative pressure pipe that follows the movement of the milling head and is coaxially arranged with the milling head. The bottom end of the negative pressure pipe is close to the surface of the workpiece but does not contact the surface of the workpiece. A gap is left for air to enter. The milling head is located at the center of the bottom end of the negative pressure pipe. The chips generated during the milling process will be blocked by the inner wall of the negative pressure pipe and will not splash around. Instead, they will be sucked away along the negative pressure pipe due to the negative pressure in the negative pressure pipe and discharged into the chip collection assembly.

[0004] Regarding the above-mentioned related technologies, the chip removal mechanism of the existing CNC gantry milling machine makes the bottom end of the negative pressure pipe close to the workpiece surface. Although it can block most of the chips from flying, grooves will be generated when the milling head mills the workpiece surface. At this time, as the milling head moves horizontally, some chips are easy to fly out from the grooves, affecting the cleanliness of the working environment and increasing the workload of manual subsequent chip cleaning. In summary, the chip removal mechanism of the existing CNC gantry milling machine has the problem of chips easily flying out. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a chip removal mechanism for a CNC gantry milling machine, so as to solve the technical problem that chips are easily ejected from the existing chip removal mechanism of the CNC gantry milling machine.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a chip removal mechanism for CNC gantry milling, comprising a negative pressure pipe head, the bottom end of the negative pressure pipe head is slidably connected to a blocking ring in the vertical direction, the bottom surface of the blocking ring is in contact with the surface of the workpiece, and a plurality of air vents for ventilation are provided on the surface, and a constant pressure air intake assembly is provided at the air vent.

[0007] By adopting the above technical solution, when the milling range of the milling cutter does not exceed the blocking ring, the bottom surface of the blocking ring contacts the surface of the workpiece, preventing the chips from flying out. At this time, the air vents on the blocking ring let air into the blocking ring. As the milling cutter moves, a groove is cut out on the surface of the workpiece, and the bottom end of the blocking ring lets air in at the groove. The baffle at the air vent is closed by the elastic force of the torsion spring. At this time, only air flows into the blocking ring from the groove to form a wind curtain, effectively preventing the chips from flying out along the milled groove.

[0008] The utility model is further configured such that the bottom end of the negative pressure pipe head is fixedly connected with a fixing ring, the fixing ring is slidably connected with a blocking ring up and down, and the top and bottom ends of the fixing ring are both provided with limiting structures for the blocking ring.

[0009] By adopting the above technical solution, the fixing ring is used to limit the sliding of the blocking ring, thereby preventing the blocking ring and the fixing ring from separating from each other when the milling cutter is lifted.

[0010] The utility model is further configured such that the air vents are arranged at intervals in an annular shape on the top surface of the blocking ring.

[0011] By adopting the above technical solution, chips can be further prevented from flying out of the air vent.

[0012] The utility model is further configured such that a baffle for blocking the air vent is rotatably provided on the inner wall of the blocking ring at the air vent, a torsion spring is provided in the rotating shaft of the baffle, and the baffle can be adsorbed by a magnetic strip provided on the side of the air vent away from the rotating shaft.

[0013] By adopting the above technical solution, the chips that are about to fly out are made to fly back into the blocking ring and transported to the waste chip collection assembly along the negative pressure pipeline.

[0014] The utility model is further configured such that the rotating shaft of the baffle is arranged on a side of the air vent away from the center of the blocking ring.

[0015] By adopting the above technical solution, the chips are prevented from spreading outward and are also facilitated to be carried away by the air flow along the negative pressure pipe.

[0016] The present invention is further configured such that the side wall of the negative pressure pipe head extends to one side and is provided with a first interface.

[0017] By adopting the above technical solution, the first interface is used to connect the negative pressure pipeline.

[0018] The present invention is further configured such that the top end of the negative pressure pipe head is connected to a second interface via a bellows.

[0019] By adopting the above technical solution, the second interface is used to connect to the milling cutter moving platform of the milling machine.

[0020] In summary, the present invention has the following beneficial effects:

[0021] The utility model provides a blocking ring at the bottom end of the negative pressure pipe that slides up and down under its own gravity, so that the bottom surface of the blocking ring contacts the surface of the workpiece. When the milling range of the milling cutter does not exceed the blocking ring, the bottom surface of the blocking ring contacts the surface of the workpiece, so that chips cannot fly out. At this time, the air vents on the blocking ring intake air into the blocking ring. As the milling cutter moves, grooves are cut out on the workpiece surface, and the bottom end of the blocking ring intakes air at the grooves. The baffle at the air vent is closed by the elastic force of the torsion spring. At this time, air only enters the grooves into the blocking ring to form a wind curtain, which effectively prevents chips from flying out along the milled grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 This is a three-dimensional diagram from another perspective of the present invention;

[0024] Figure 3 This is a three-dimensional diagram of the barrier ring of the utility model in a removed state;

[0025] Figure 4 This is a three-dimensional diagram of the blocking ring of the utility model in the open state of the baffle;

[0026] Figure 5 This is a three-dimensional diagram of the blocking ring of the utility model in the open state of the baffle from another perspective;

[0027] Figure 6 For the utility model Figure 5 A magnified view of center.

[0028] In the figure: 1. Negative pressure pipe head; 2. Fixing ring; 3. Blocking ring; 4. Air vent; 5. Baffle; 6. Magnetic strip; 7. First interface; 8. Second interface. DETAILED DESCRIPTION

[0029] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure.

[0031] Example 1

[0032] A chip removal mechanism for CNC gantry milling, such as Figure 1-6As shown, it includes a negative pressure pipe head 1, the bottom end of the negative pressure pipe head 1 is connected to a blocking ring 3 in a vertical sliding manner, the bottom surface of the blocking ring 3 is in contact with the surface of the workpiece, and a plurality of air vents 4 for ventilation are provided on the surface, and a constant pressure air intake component is provided at the air vent 4. Specifically, the constant pressure air intake component can be a constant pressure air intake valve, etc. In this embodiment, a baffle 5 with a torsion spring is specifically used. The bottom end of the negative pressure pipe head 1 is fixedly connected to a fixing ring 2, and the fixing ring 2 is connected to the blocking ring 3 by sliding up and down. The top and bottom ends of the fixing ring 2 are both provided with a fixing ring 3 for the blocking ring 3. The limiting structure of the fixing ring 2 is as follows: specifically, the top and bottom ends of the fixing ring 2 are fixedly connected with a circular ring structure for limiting the sliding of the blocking ring 3. During the installation of the blocking ring 3, the blocking ring 3 is first slidably connected to the fixing ring 2, and then the circular ring structures at the top and bottom ends of the fixing ring 2 are connected to the fixing ring 2. The limiting structure on the fixing ring 2 is used to limit the sliding of the blocking ring 3 to prevent the blocking ring 3 and the fixing ring 2 from separating from each other when the milling cutter is lifted. The air vents 4 are arranged at annular intervals on the top surface of the blocking ring 3 to further prevent chips from flying out of the air vents 4.

[0033] See also Figure 2-6 When the workpiece is in the air, the air is sucked in from the air filter 4, and the air is directed back to the workpiece, so that the air filter 5 can enter the workpiece 4 at will, and the air filter 5 can enter the workpiece 4 at will.

[0034] See also Figure 1-2 The side wall of the negative pressure pipe head 1 extends to one side and is provided with a first interface 7. The first interface 7 is used to connect the negative pressure pipeline. Specifically, the first interface 7 is connected to the negative pressure bellows through a pipe clamp. The top of the negative pressure pipe head 1 is connected to the second interface 8 through the bellows. The second interface 8 is used to connect the milling cutter moving table of the milling machine. Specifically, the second interface 8 is fixedly connected to the milling cutter moving table through bolts and other fixing parts.

[0035] Example 2

[0036] A chip removal mechanism for CNC gantry milling, such as Figure 1-6As shown, based on Example 1, the difference from Example 1 is that the rotating shaft of the baffle 5 is arranged on the side of the air vent 4 away from the center of the blocking ring 3, so that the baffle 5 is inclined downward toward the center of the blocking ring 3 when it is in the open state. The air flow of the intake air can blow the waste chips toward the center of the blocking ring 3, avoiding the outward expansion of the chips while also helping the chips to be carried away by the air flow along the negative pressure pipe.

[0037] After the workpiece is emptied, the air in the air filter 3 is pulled out of the air filter 5 and the air filter 3 is turned off, so that the workpiece emptied out of the air filter 3 and the air filter 3 is turned off.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A chip removal mechanism for a CNC gantry milling machine, comprising a negative pressure pipe head (1), characterized in that: The bottom end of the negative pressure pipe head (1) is slidably connected to a blocking ring (3) in a vertical direction, the bottom surface of the blocking ring (3) contacts the surface of the workpiece, and the surface is provided with a plurality of air vents (4) for ventilation, and a constant pressure air intake assembly is provided at the air vents (4).

2. The chip removal mechanism for CNC gantry milling according to claim 1, characterized in that: The bottom end of the negative pressure pipe head (1) is fixedly connected to a fixing ring (2), the fixing ring (2) is slidably connected to a blocking ring (3) up and down, and the top and bottom ends of the fixing ring (2) are both provided with limiting structures for the blocking ring (3).

3. The chip removal mechanism for CNC gantry milling according to claim 1, characterized in that: The air vents (4) are arranged at intervals in an annular shape on the top surface of the blocking ring (3).

4. The chip removal mechanism for CNC gantry milling according to claim 3, characterized in that: The inner wall of the blocking ring (3) is rotatably provided with a baffle (5) for blocking the air vent (4) at the air vent (4), a torsion spring is provided in the rotating shaft of the baffle (5), and the baffle (5) can be adsorbed by a magnetic strip (6) provided on the side of the air vent (4) away from the rotating shaft.

5. The chip removal mechanism for CNC gantry milling according to claim 4, characterized in that: The rotating shaft of the baffle (5) is arranged on a side of the air vent (4) away from the center of the blocking ring (3).

6. The chip removal mechanism for CNC gantry milling according to claim 1, characterized in that: The side wall of the negative pressure pipe head (1) extends to one side and is provided with a first interface (7).

7. The chip removal mechanism for CNC gantry milling according to claim 1, characterized in that: The top end of the negative pressure pipe head (1) is connected to a second interface (8) via a bellows.

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