A cooling medium recovery device for a BTA deep hole drill

Abstract

This utility model provides a cooling medium recovery device for BTA deep hole drilling, relating to the field of machining cooling medium recovery. The solution includes: a collection cylinder capable of moving along the tool holder axis, positioned close to the outer circumferential surface of the workpiece during use; a connecting rod mounted on the collection cylinder, the connecting rod having an [-shaped structure, positioned above or below the workpiece during use; a blowout preventer connected to the collection cylinder via the connecting rod, the blowout preventer including a bottom, coaxially arranged with the collection cylinder, and its opening facing the inner circumferential surface of the workpiece; and a storage assembly communicating with the collection cylinder. This utility model can recover cooling medium outside the hole, avoiding environmental pollution and worker injury.

Description

Technical Field

[0001] This utility model relates to the field of cooling medium recovery in machining, and in particular to a cooling medium recovery device for BTA deep hole drilling. Background Technology

[0002] The dual-hole single-tube internal chip removal deep hole drilling system (BTA deep hole drill) is a deep hole machining method commonly used for ring-shaped workpieces. It introduces coolant through the gap between the drill rod and the hole wall, and the cutting fluid pressure forces the chips out of the inner hole of the drill rod. It is suitable for drilling deep holes with a diameter of 6 mm or more and a depth-to-diameter ratio of less than 100. Its production efficiency is more than 3 times higher than that of gun drilling.

[0003] In existing technologies, the coolant flow rate for BTA deep hole drilling is 5-18 m / s. This flow rate ensures that the coolant effectively removes cutting heat, lubricates the tool, and smoothly discharges chips from the drill rod's inner hole to achieve high machining accuracy and surface quality. The larger the depth-to-diameter ratio of the hole to be machined, the more difficult it is for the coolant to discharge chips, requiring a higher flow rate. For example, when machining a deep hole with a depth-to-diameter ratio of 25:1, the coolant flow rate is controlled at 200 L / min to 300 L / min, at which point the flow rate can reach about 5 m / s to 8 m / s to ensure smooth chip removal and tool cooling.

[0004] When the above technical solutions are adopted, the flow rate of the cooling medium is relatively high. The process of the cooling medium being pumped from the oil circuit onto the circumference of the workpiece and into the hole to be processed will, on the one hand, splash onto other places around it and pollute the environment around the equipment. On the other hand, when workers observe the processing at close range, the cooling oil will splash onto the workers and may cause burns or abrasions. Utility Model Content

[0005] In order to solve the technical problems of environmental pollution and human harm caused by coolant in the prior art, this utility model provides a coolant recovery device for BTA deep hole drilling, which can recover the coolant outside the hole and avoid environmental pollution and injury to workers.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a cooling medium recovery device for BTA deep hole drilling, comprising: a collecting cylinder, which is sleeved on the tool holder and can move along the axial direction of the tool holder; in use, the collecting cylinder is close to the outer circumferential surface of the workpiece; a connecting rod, which is disposed on the collecting cylinder and has an [-shaped structure; in use, the connecting rod is located at the upper or lower part of the workpiece; a blowout preventer, which is connected to the collecting cylinder through the connecting rod, the blowout preventer including a bottom and coaxially disposed with the collecting cylinder; in use, the opening of the blowout preventer is close to the inner circumferential surface of the workpiece; and a storage component, which is connected to the collecting cylinder through a liquid inlet pipe.

[0007] This invention, by setting up a collection cylinder and a blowout preventer, can recover the coolant that has not entered the hole and the coolant that has flowed out of the hole and store it in the storage component, thereby preventing the coolant from splashing from both ends of the hole and preventing environmental pollution and human injury.

[0008] Furthermore, a positioning ring is rotatably mounted on the inner wall of the collecting cylinder via a bearing, and three floating balls are rotatably mounted on the inner wall of the positioning ring along its radial direction. A spring is provided between the floating balls and the bottom of the hole of the positioning ring.

[0009] This invention, by incorporating bearings, a positioning ring, and a floating ball, prevents the collecting cylinder from rotating with the tool holder, thus avoiding tangling of the inlet pipe. Furthermore, the rotating floating ball facilitates axial relative movement between the collecting cylinder and the tool holder, ensuring that the collecting cylinder remains in contact with the outer surface of the workpiece. It also allows for the sharing of a single device among tool holders within a certain diameter range, enhancing the device's versatility.

[0010] Furthermore, the connecting rod includes rod one and rod two, both of which are L-shaped. One end of rod one is connected to the collecting cylinder, and the other end of rod one is screwed with a threaded sleeve. The threaded sleeve is rotatably connected to one end of rod two, and the other end of rod two is connected to the blowout preventer.

[0011] This invention allows for adjustment of the connecting rod length by setting a threaded sleeve, making it suitable for processing workpieces of various widths and improving the flexibility of the device.

[0012] Furthermore, the first rod is detachably connected to the collecting cylinder, and the second rod is detachably connected to the blowout preventer.

[0013] This invention facilitates maintenance and reduces maintenance costs through its disassembly and connection mechanism.

[0014] Furthermore, the inner diameter of the blowout preventer is larger than the inner diameter of the collecting cylinder.

[0015] This invention overcomes the manufacturing and installation difficulties of this device by designing a larger collection cylinder, thus ensuring the anti-spraying effect of coolant when the hole is drilled through.

[0016] Furthermore, the blowout preventer also includes a cylinder body, and the bottom of the cylinder is detachably connected to the blowout preventer.

[0017] This invention facilitates the cleaning of the blowout preventer by disassembling and connecting the bottom of the cylinder.

[0018] Furthermore, the storage assembly also includes an oil tank, and the inlet pipe is connected to the oil tank.

[0019] Furthermore, the storage assembly also includes an oil storage tank, which is connected to the collection cylinder via the liquid inlet pipe.

[0020] Furthermore, a filter screen is installed at the oil inlet of the oil storage tank.

[0021] As can be seen from the above technical solutions, this utility model has the following advantages: This invention provides a coolant recovery device for BTA deep hole drilling. By incorporating a collection cylinder and a blowout preventer, it can recover coolant that has not entered the hole or has flowed out of the hole and store it in a storage component, preventing coolant from splashing from both ends of the hole and thus avoiding environmental pollution and injury to personnel. The inclusion of bearings, a positioning ring, and a floating ball prevents the collection cylinder from rotating with the tool holder, thus preventing the inlet pipe from becoming tangled. Furthermore, the rotating floating ball facilitates axial relative movement between the collection cylinder and the tool holder, ensuring the collection cylinder remains in contact with the outer surface of the workpiece. This device allows for the use of a single set of tools with a certain diameter range, improving its versatility. The use of a threaded sleeve allows for adjustment of the connecting rod length, enabling the device to be used for machining workpieces of various widths, enhancing its operational flexibility. The detachable connection facilitates maintenance, reducing maintenance costs. The larger design of the collection cylinder overcomes manufacturing and installation challenges, ensuring a blowout-proof effect on coolant during hole penetration. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the collection tube in one specific embodiment of this utility model.

[0025] Figure 3 This is a schematic diagram of the oil storage tank in a specific embodiment of this utility model.

[0026] Figure 4 This is a schematic diagram of the connecting rod in the second specific embodiment of this utility model.

[0027] In the diagram, 1. Collection cylinder; 101. Positioning ring; 102. Spring; 103. Floating ball; 104. Bearing; 2. Connecting rod; 201. Rod two; 202. Screw sleeve; 203. Rod one; 3. Blowout preventer; 301. Cylinder body; 302. Cylinder bottom; 4. Liquid inlet pipe; 5. Oil storage tank; 501. Box body; 502. Filter screen; 6. Tool holder; 7. Workpiece. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent. Specific Implementation Method 1 like Figure 1 and Figure 2 As shown in the figure, this specific embodiment provides a cooling medium recovery device for BTA deep hole drilling, including a collection cylinder 1, a connecting rod 2, a blowout preventer 3, and a storage assembly. The collection cylinder 1 is sleeved on the tool holder 6 and can move axially along the tool holder 6. In use, the collection cylinder 1 is close to the outer circumferential surface of the workpiece 7. The collection cylinder 1 can collect the coolant that has not entered the hole and the coolant flowing out of the hole, preventing the coolant from splashing from the hole opening. The connecting rod 2 is disposed on the collection cylinder 1 and has a [-shaped structure. In use, the connecting rod 2 is located above or below the workpiece 7. The blowout preventer 3 is connected to the collection cylinder 1 through the connecting rod 2. The blowout preventer 3 includes a bottom 302 and is coaxially arranged with the collection cylinder 1. In use, the opening of the blowout preventer 3 is close to the inner circumferential surface of the workpiece. The blowout preventer 3 can recover the coolant sprayed from the bottom of the hole when the hole is drilled through. The storage assembly is connected to the collection cylinder 1 through a liquid inlet pipe 4.

[0030] This specific embodiment, by setting up a collection cylinder 1 and a blowout preventer 3, can recover the coolant that has not entered the hole and the coolant that flows out of the hole and store it in the storage component, thereby preventing the coolant from splashing from both ends of the hole and preventing environmental pollution and human injury.

[0031] like Figure 2As shown, to prevent the inlet pipe 4 from winding due to the rotation of the collection cylinder 1, a positioning ring 101 is rotatably mounted on the inner wall of the collection cylinder 1 via a bearing 104. Three blind holes are provided on the inner wall of the positioning ring 101 along its radial direction. A floating ball 103 is rotatably mounted in each blind hole, and a spring 102 is provided between the floating ball 103 and the bottom of the blind hole. With this arrangement, the positioning ring 101 will not transmit the rotational action of the guide rod 6, and the collection cylinder 1 will basically not rotate. The setting of the floating ball 103 ensures that when the guide rod 6 is inserted, the collection cylinder 1 and the guide rod 6 will move axially without affecting the drilling. At the same time, the floating ball 103 makes the actual assembly diameter of the positioning ring 101 within a certain range, so that guide rods 6 within a certain diameter range can share a set of this device, improving the versatility of this device. The rotatable setting of the floating ball 103 can also reduce the friction between the positioning ring 101 and the guide rod 6.

[0032] In this specific embodiment, to reduce maintenance costs, one end of the connecting rod 2 is detachably connected to the collecting cylinder 1, and the other end of the connecting rod 2 is detachably connected to the blowout preventer 3; specifically, the collecting cylinder 1 and the blowout preventer 3 are provided with threaded holes, and the connecting rod 2 is provided with threads.

[0033] like Figure 1 As shown, in order to reduce the impact of manufacturing and installation errors on the blowout prevention effect, in this specific embodiment, the inner diameter of the blowout preventer 3 is larger than the inner diameter of the collection cylinder 1; the blowout preventer 3 also includes a cylinder body 301, and the cylinder bottom 302 is detachably connected to the blowout preventer 3. With this setting, the blowout preventer 3 can be easily cleaned by detaching and connecting the cylinder bottom 302.

[0034] like Figure 3 As shown, in this specific embodiment, the storage component further includes an oil storage tank 5, and the liquid inlet pipe is connected to the oil storage tank 5; the oil storage tank 5 includes a tank body 501, an oil inlet is provided on the tank body 501, and a filter screen 502 is inserted into the tank body 501 near the oil inlet, through which metal slag is filtered and recycled.

[0035] In this specific embodiment, the liquid inlet pipe 4 is connected to the collection cylinder 1 and the oil storage tank 5 by quick-connect plugs. The liquid inlet pipe 4 also includes a branch line, which connects the blowout preventer 3 to the oil storage tank 5. Specific Implementation Method Two like Figure 4As shown, this specific embodiment provides a cooling medium recovery device for BTA deep hole drilling, which is basically the same in structure as the first embodiment, except that: the connecting rod 2 includes rod one 203 and rod two 201, both of which are L-shaped. One end of rod one 203 is connected to the collecting cylinder 1, and the other end of rod one 203 is screwed with a threaded sleeve 202. The threaded sleeve 202 is rotatably connected to one end of rod two 201, and the other end of rod two 201 is connected to the blowout preventer 3. When the width of the workpiece 7 changes, the distance between rod one 203 and rod two 201 is changed by rotating the threaded sleeve 202, thereby adjusting the length of the connecting rod 2.

[0037] This specific embodiment achieves the adjustment of the length of the connecting rod 2 by setting the screw sleeve 202, which can be used to process workpieces 7 of various widths, thus improving the flexibility of the device.

[0038] As can be seen from the above specific embodiments, this utility model has the following beneficial effects: 1. By setting up a collection cylinder 1 and a blowout preventer 3, the coolant that does not enter the hole and flows out of the hole can be recovered and stored in the storage component, preventing the coolant from splashing from both ends of the hole and preventing environmental pollution and human injury. 2. By setting bearing 104, positioning ring 101 and floating ball 103, the rotation of collecting cylinder 1 with tool holder 6-203 can be prevented from causing the inlet pipe 4 to become tangled; in addition, by setting rotating floating ball 103, collecting cylinder 1 and tool holder 6 can more easily generate axial relative movement, ensuring that collecting cylinder 1 is always in contact with the outer surface of workpiece, and realizing that tool holder 6 within a certain diameter range can share a set of this device, improving the versatility of this device; 3. The length of the connecting rod 2 can be adjusted by setting the screw sleeve 202, which can be used to process workpieces 7 of various widths, thus improving the flexibility of the device. 4. The disassembly and connection facilitates maintenance and reduces maintenance costs; 5. By designing the collection cylinder 1 to be larger, the manufacturing and installation difficulties of this device can be overcome, ensuring the anti-spraying effect of coolant when the hole is drilled through.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling medium recovery device for BTA deep hole drilling, characterized in that, include: The collecting cylinder (1) is sleeved on the tool holder (6). The collecting cylinder (1) can move along the axial direction of the tool holder (6). When in use, the collecting cylinder (1) is close to the outer circumferential surface of the workpiece. Connecting rod (2), the connecting rod (2) is set on the collecting cylinder (1), the connecting rod (2) has a [-shaped structure, and when in use, the connecting rod (2) is located at the upper or lower part of the workpiece; Blowout preventer (3), the blowout preventer (3) is connected to the collection cylinder (1) through the connecting rod (2), the blowout preventer (3) includes a cylinder bottom (302), the blowout preventer (3) and the collection cylinder (1) are coaxially arranged, and when in use, the opening of the blowout preventer (3) is close to the inner circumferential surface of the workpiece; Storage component, which is connected to the collection cylinder (1) via liquid inlet pipe (4).

2. The cooling medium recovery device for BTA deep hole drilling as described in claim 1, characterized in that, The inner wall of the collecting cylinder (1) is provided with a positioning ring (101) through a bearing. Three floating balls (103) are provided on the inner wall of the positioning ring (101) along its radial direction. A spring (102) is provided between the floating ball (103) and the bottom of the hole of the corresponding positioning ring (101).

3. The cooling medium recovery device for BTA deep hole drilling as described in claim 2, characterized in that, The connecting rod (2) includes rod one (203) and rod two (201). Both rod one (203) and rod two (201) are L-shaped. One end of rod one (203) is connected to the collecting cylinder (1), and the other end of rod one (203) is screwed with a screw sleeve (202). The screw sleeve (202) is rotatably connected to one end of rod two (201), and the other end of rod two (201) is connected to the blowout preventer (3).

4. The cooling medium recovery device for BTA deep hole drilling as described in claim 3, characterized in that, The first rod (203) is detached from the collection cylinder (1), and the second rod (201) is detached from the blowout preventer (3).

5. The cooling medium recovery device for BTA deep hole drilling as described in claim 4, characterized in that, The inner diameter of the blowout preventer (3) is larger than the inner diameter of the collecting cylinder (1).

6. The cooling medium recovery device for BTA deep hole drilling as described in claim 5, characterized in that, The blowout preventer (3) also includes a cylinder body (301), and the bottom of the cylinder (302) is detachably connected to the blowout preventer (3).

7. The cooling medium recovery device for BTA deep hole drilling as described in any one of claims 1-6, characterized in that, The storage assembly also includes an oil storage tank (5), which is connected to the collection cylinder (1) through the liquid inlet pipe (4).

8. The cooling medium recovery device for BTA deep hole drilling as described in claim 7, characterized in that, A filter screen (502) is provided at the oil inlet of the oil storage tank (5).

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