Cooling device of automatic drilling and tapping machine for automobile covering part mold

Abstract

The automatic drilling and tapping machine cooling device comprises a water inlet sleeve, a water inlet pipe and a drill bit, the drill bit is provided with a blind hole and a cooling hole, a drill clamp is provided with a water inlet ring groove, a transverse hole and a vertical hole, and the vertical hole is communicated with the blind hole of the drill bit; a water inlet hole communicated with the water inlet pipe is formed in the water inlet sleeve; the drilling device has the beneficial effects that when the automobile covering part die is drilled, the water inlet sleeve is rotationally connected with the drill clamp, when the drill clamp rotates, the water inlet sleeve is fixed, and cooling liquid passes through the water inlet pipe, a water inlet hole of the water inlet sleeve, a water inlet ring groove of the drill clamp, a transverse hole, a vertical hole, a blind hole of a drill bit and a cooling hole; and the core part of the drill bit is cooled, so that heat of the drill bit can be taken away in time, pressure can be increased when the drill bit is used for drilling, the drilling speed is increased, and the purpose of the utility model is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of drilling technology, and specifically relates to a cooling device for an automatic drilling and tapping machine used in automotive body panel molds. Background Technology

[0002] Initially, when our company needed to drill holes in the molds for manufacturing automotive body panels, we used a method of marking lines on the molds and then drilling holes with a radial drilling machine, which was inefficient. Later, our company developed an automatic drilling and tapping robot. However, when using our automatic tapping and drilling machine, we found that if we increased the drilling speed, we needed to apply more pressure to the drill bit. After applying the pressure, we found that the drill bit was smoking, or burning. The reason for this was that the existing method of adding coolant to the outside of the drill bit was not enough to cool the core of the drill bit, causing overheating, which needed to be solved. Utility Model Content

[0003] The purpose of this invention is to provide a cooling device for an automatic drilling and tapping machine used in automotive body panel molds, which can cool the core of the drill bit so as not to burn the drill bit during drilling in automotive body panel molds and to increase the drilling speed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The tapping machine includes a tumbler that can flip and rotate, and a robotic arm for mounting the tumbler, the tumbler being equipped with a cooling device.

[0006] A cooling device for an automatic drilling and tapping machine used in automotive body panel molds includes a water inlet sleeve rotatably connected to a drill chuck, a water inlet pipe fixedly connected to the water inlet sleeve, and a drill bit fixed at the center of the drill chuck. The center of the drill bit has a blind hole along its length. The drill bit has a drill bit with a cutting edge, and a chip removal groove is provided between adjacent cutting edges. A cooling hole perpendicularly communicating with the blind hole is provided in the chip removal groove. The cooling hole is connected through the blind hole, the drill chuck, and the water inlet sleeve. The cooling hole is used to spray coolant into the gap between the drill bit and the workpiece being drilled. The drill chuck is provided with a clamping arm for clamping the drill bit.

[0007] Furthermore, the robotic arm is equipped with a guide block, and the water inlet pipe is slidably connected to the guide block.

[0008] Furthermore, it also includes a water tank, a water pump fixedly connected to the water tank, and hoses fixedly connected to the water pump and the water inlet pipe respectively, wherein the water tank contains coolant for cooling the drill bit.

[0009] Furthermore, a bearing is provided between the water inlet sleeve and the drill chuck.

[0010] Furthermore, the drill chuck is provided with a flange, and the inner ring of the bearing transitions and fits with the outer circle of the drill chuck; the lower end face of the inner ring of the bearing abuts against the flange, and the outer ring of the bearing is installed in the water inlet sleeve, and the water inlet sleeve is provided with an end cap for pressing the outer ring of the bearing.

[0011] Furthermore, the water inlet sleeve is provided with a water inlet hole that communicates with the water inlet pipe.

[0012] Furthermore, the drill chuck corresponding to the water inlet hole is provided with a water inlet annular groove, the water inlet hole is connected to the water inlet annular groove, the center of the drill chuck is provided with a vertical hole, the vertical hole is connected to the blind hole of the drill bit; the drill chuck is provided with transverse holes that are connected to the water inlet annular groove and the vertical hole respectively.

[0013] The water inlet annular groove is provided with sealing rings on both the upper and lower sides, and the sealing rings are located between the drill chuck and the water inlet sleeve.

[0014] Furthermore, a sealing gasket is provided between the top of the drill bit and the drill chuck.

[0015] Compared with the prior art, the significant beneficial effects achieved by this application are as follows:

[0016] When drilling holes in automotive body panel molds, a water inlet sleeve is rotatably connected to the drill chuck. When the drill chuck rotates, the water inlet sleeve remains stationary. Coolant flows into the vertical hole of the drill chuck through the water inlet hole, then into the blind hole of the drill bit, and finally sprays coolant into the gap between the workpiece and the drill bit through the cooling hole, thereby cooling the core of the drill bit. In this way, the heat of the drill bit can be carried away in time, and the drill bit can increase the pressure during drilling, thereby increasing the drilling speed, thus achieving the purpose of the invention.

[0017] By setting a sealing ring and fitting it on both sides of the water inlet ring groove of the drill chuck, the coolant can be prevented from flowing out through the gap between the drill chuck and the water inlet sleeve, thus avoiding waste of coolant and contamination of the drill table.

[0018] By using a sealing gasket, coolant can be prevented from flowing out from the mating surface between the drill bit end face and the drill chuck, thus reducing cooling of the drill bit core. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the structure of this application;

[0020] Appendix Figure 2 This is a schematic diagram of the drill bit structure;

[0021] Appendix Figure 3 This is a sectional view of the drill bit.

[0022] Appendix Figure 4 for Figure 1 Enlarged view of point A;

[0023] In the attached diagram,

[0024] 1-Drill chuck, 2-Clamping arm, 3-Drill bit, 4-Water inlet sleeve, 5-Water inlet pipe, 6-Guide block, 7-Hose,

[0025] 8-Water pump, 9-Water tank;

[0026] 11-Horizontal hole, 12-Water inlet ring groove, 13-Vertical hole;

[0027] 31-Blind hole, 32-Cooling hole, 33-Drill bit, 34-Chip groove;

[0028] 41-Sealing ring, 42-End cap, 43-Water inlet hole, 44-Bearing. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0031] Example 1

[0032] like Figure 1-4 As shown,

[0033] The tapping machine includes a tumbler 1 that can be flipped and rotated, and a robotic arm for mounting the tumbler 1. The tumbler 1 is equipped with a cooling device.

[0034] A cooling device for an automatic drilling and tapping machine used in automotive body panel molds includes a water inlet sleeve 4 rotatably connected to a drill chuck 1, a water inlet pipe 5 fixedly connected to the water inlet sleeve 4, and a drill bit 3 fixed at the center of the drill chuck 1.

[0035] like Figure 2-3 As shown, the detailed structure of the drill bit 3 is that a blind hole 31 is provided at the center of the drill bit 3 along the length direction of the drill bit 3. The distance between the blind hole 31 and the drill tip of the drill bit 3 shall not be less than 5mm, so as to avoid the blind hole 31 affecting the strength of the drill tip.

[0036] The drill bit 3 is provided with a drill bit 33, and a chip removal groove 34 is provided between adjacent drill bits 33. A cooling hole 32 is provided in the chip removal groove 34, which is perpendicular to the blind hole 31. The diameter of the cooling hole 32 cannot be greater than the width of the chip removal groove 34, so as to avoid the cooling hole 32 affecting the strength of the drill bit 33. The number of cooling holes 32 is not less than four along the length of the drill bit 3, and the four cooling holes 32 are evenly distributed along the center of the drill bit 3.

[0037] The cooling hole 32 is connected through the blind hole 31, the drill chuck 1, and the water inlet sleeve 5; this provides a closed channel for the coolant, which facilitates cooling of the drill bit 3 from the core; the cooling hole 32 is used to spray coolant into the gap between the drill bit 3 and the workpiece being drilled; the drill chuck 1 is provided with a clamping arm 2 for clamping the drill bit 3.

[0038] The robotic arm is equipped with a guide block 6, and the water inlet pipe 5 is slidably connected to the guide block 6. In this way, when the drill bit 3 drills and cuts the workpiece and moves downward, the drill chuck 1 will move downward. The drill chuck 1 drives the water inlet pipe 5 to slide along the guide block 6 through the water inlet sleeve 4, so as to avoid the water inlet pipe 5 getting tangled on the drill chuck 1.

[0039] The cooling device also includes a water inlet system, comprising a water tank 9, a water pump 8 fixedly connected to the water tank 9, and hoses 7 fixedly connected to the water pump 8 and the water inlet pipe 5 respectively. The water tank 9 contains coolant for cooling the drill bit 3. Under the suction of the water pump 8, the coolant flows along the hoses 7, the water inlet pipe 5, the water inlet hole 43 of the water inlet sleeve 4, the water inlet annular groove 12 of the drill chuck 1, the transverse hole 11, the vertical hole 13, the blind hole 31 of the drill bit 3, and the cooling hole 32, cooling the drill bit 3 from the core. A bearing 44 is provided between the water inlet sleeve 4 and the drill chuck 1, and the drill chuck 1 has a flange. The detailed installation scheme of the bearing 44 is as follows: the inner ring of the bearing 44 transitions with the outer circle of the drill chuck 1; the lower end face of the inner ring of the bearing 44 abuts against the flange; the outer ring of the bearing 44 is installed inside the water inlet sleeve 4, and the water inlet sleeve 4 has an end cap 42 for pressing the outer ring of the bearing 44.

[0040] The water inlet sleeve 4 is provided with a water inlet hole 43 that communicates with the water inlet pipe 5.

[0041] The drill chuck 1, corresponding to the water inlet hole 43, is provided with a water inlet annular groove 12. The water inlet hole 43 is connected to the water inlet annular groove 12. The center of the drill chuck 1 is provided with a vertical hole 13, which is connected to the blind hole 31 of the drill bit 3. The drill chuck 1 is provided with a transverse hole 11 that is connected to the water inlet annular groove 12 and the vertical hole 13 respectively.

[0042] To prevent the workpiece from overheating during drilling, this application does not allow the removal of the original cooling device from the tapping machine. This application only improves the internal cooling of the drill bit 3, thus preventing overheating during drilling.

[0043] This can increase the drilling speed.

[0044] Work process,

[0045] When drilling holes in an automotive body panel mold, first press the top of the drill bit 3 against the bottom of the vertical hole 13 of the drill chuck 1; then clamp the drill bit 3 to the drill chuck 1 using the clamping arm 2; then start the water pump 8, and coolant flows from the water tank 9 along the water pump 8, hose 7, inlet pipe 5, inlet hole 43 of the inlet sleeve 4, inlet ring groove 12 of the drill chuck 1, horizontal hole 11, vertical hole 13, blind hole 31 of the drill bit 3, and cooling hole 32, cooling the drill bit 3 from the core. At the same time, turn on the original cooling device of the automatic drilling and tapping machine so that the coolant cools the inside and outside of the drill bit simultaneously; start the drilling machine so that the drill bit 3 comes into contact with the workpiece, and drilling can begin.

[0046] Example 2

[0047] The structure of this embodiment is largely the same as that of Embodiment 1.

[0048] The difference is that,

[0049] like Figure 1 As shown, a sealing gasket is provided between the top of the drill bit 3 and the drill chuck 1.

[0050] The sealing gaskets provided above can prevent coolant from leaking out from the joint between the top of the drill bit 3 and the drill chuck 1, thus avoiding affecting the cooling of the drill bit 3.

[0051] Example 3

[0052] The structure of this embodiment is largely the same as that of embodiment 2.

[0053] The difference is that,

[0054] like Figure 4 As shown, sealing rings 41 are provided on both the upper and lower sides of the water inlet annular groove 12.

[0055] It is located between the drill chuck 1 and the water inlet sleeve 4.

[0056] The sealing ring 41 prevents coolant from leaking out of the water inlet ring groove 41 when the drill chuck 1 rotates. Without the sealing ring 41, the outer surface of the drill chuck 1 would be contaminated, wasting coolant and causing it to splash everywhere, affecting the lubrication of the rotating parts.

[0057] Currently, the technical solution of this application is not limited to drilling of automotive body panel molds, but can also be used for drilling other workpieces; a pilot test has been conducted, which is a small-scale experiment before the product is mass-produced; after the pilot test was completed, a user survey was conducted on a small scale, and the survey results showed that user satisfaction was high; now we have begun to prepare for the formal production and industrialization of the product (including intellectual property risk warning survey).

Claims

1. A cooling device for an automatic drilling and tapping machine for automobile covering molds, the tapping machine comprising a drill chuck (1) capable of being flipped and rotated, and a mechanical arm for mounting the drill chuck (1), wherein the drill chuck (1) is provided with a cooling device, characterized in that: The device includes a water inlet sleeve (4) rotatably connected to the drill chuck (1), a water inlet pipe (5) fixedly connected to the water inlet sleeve (4), and a drill bit (3) fixed at the center of the drill chuck (1). The center of the drill bit (3) has a blind hole (31) along the length of the drill bit (3). The drill bit (3) has a drill bit (33) and a chip removal groove (34) between adjacent drill bits (33). The chip removal groove (34) has a cooling hole (32) that is perpendicular to the blind hole (31). The cooling hole (32) is connected to the water inlet sleeve (4) through the blind hole (31), the drill chuck (1), and the drill bit (4). The cooling hole (32) is used to spray coolant into the gap between the drill bit (3) and the workpiece being drilled. The drill chuck (1) has a clamping arm for clamping the drill bit (3).

2. An automatic drilling and tapping machine cooling device for an automobile covering mold according to claim 1, characterized in that: The robotic arm is equipped with a guide block (6), and the water inlet pipe (5) is slidably connected to the guide block (6).

3. The automatic drilling and tapping machine cooling device for an automobile cover mold according to claim 2, characterized in that: It also includes a water tank (9), a water pump (8) fixedly connected to the water tank (9), and a hose (7) fixedly connected to the water pump (8) and the water inlet pipe (5), respectively. The water tank (9) contains coolant for cooling the drill bit (3).

4. The automatic drilling and tapping machine cooling device for an automobile cover mold according to claim 3, characterized in that: A bearing (44) is provided between the water inlet sleeve (4) and the drill chuck (1).

5. An automatic drilling and tapping machine cooling device for an automobile panel mold according to claim 4, characterized in that: The drill chuck (1) is provided with a flange, and the inner ring of the bearing (44) is in transition fit with the outer circle of the drill chuck (1); the lower end face of the inner ring of the bearing (44) abuts against the flange, and the outer ring of the bearing (44) is installed in the water inlet sleeve (4), and the water inlet sleeve (4) is provided with an end cap (42) for pressing the outer ring of the bearing (44).

6. An automatic drilling and tapping machine cooling device for an automobile panel mold according to claim 5, characterized in that: The water inlet sleeve (4) is provided with a water inlet hole (43) that communicates with the water inlet pipe (5).

7. The automatic drilling and tapping machine cooling device for an automobile cover mold according to claim 6, characterized in that: The drill chuck (1) corresponding to the water inlet hole (43) is provided with a water inlet annular groove (12), the water inlet hole (43) is connected to the water inlet annular groove (12), the center of the drill chuck (1) is provided with a vertical hole (13), the vertical hole (13) is connected to the blind hole (31) of the drill bit (3); the drill chuck (1) is provided with a transverse hole (11) that is connected to the water inlet annular groove (12) and the vertical hole (13) respectively.

8. The automatic drilling and tapping machine cooling device for an automobile cover mold according to claim 7, characterized in that: The water inlet annular groove (12) is provided with sealing rings (41) on both the upper and lower sides, and the sealing rings (41) are located between the drill chuck (1) and the water inlet sleeve (4).

9. The automatic drilling and tapping machine cooling device for an automobile cover mold according to claim 7, characterized in that: A sealing gasket is provided between the top of the drill bit (3) and the drill chuck (1).

Images