A guide sleeve cooling device for deep hole drilling

Abstract

The utility model discloses a kind of guide sleeve cooling devices of deep hole drilling, including guide sleeve and external cooling assembly, guide sleeve built-in drill head assembly and end portion is equipped in punching end;The fixed sleeve end of cooling assembly is fixed in punching end outside, and its inner and outer wall is equipped with multiple groups of parallel installation surface, face installs hole and installs cooling spray head, spray head is all towards guide sleeve outer wall, guide sleeve outer wall has evenly spaced, the flow guide groove of same size, spray head can cover flow guide groove;Device is precisely matched with flow guide groove by spray head and high-efficiency cooling, spray head outer extension bucket covers flow guide groove area, can uniformly spray coolant to guide sleeve surface, flow guide groove guides coolant axial flow, quickly takes away drilling friction heat;Four installation surfaces of fixed sleeve provide stable reference for spray head, mounting hole outer wall positioning groove is matched with spray head positioning installation ring, then fastened by bolt and fixed hole, ensure that spray head angle, position is unified, avoid cooling blind area.

Description

Technical Field

[0001] This utility model specifically relates to a guide sleeve cooling device for deep hole drilling. Background Technology

[0002] Deep hole drilling, as a key precision process in the field of mechanical manufacturing, is widely used in high-end equipment manufacturing scenarios such as energy, automobiles, and aerospace. In the process of deep hole drilling, the guide sleeve assembly, as the core guiding structure, needs to control its diameter tolerance at the H5 level. By providing rigid support and precise positioning for the drill bit, it can improve the straightness accuracy of hole machining and plays an irreplaceable role in ensuring machining quality.

[0003] The semi-enclosed working conditions of deep hole drilling make it difficult for cutting heat to dissipate effectively, and the continuous friction between the guide sleeve and the high-speed rotating drill bit further aggravates the heat accumulation. At present, most guide sleeve cooling methods are external spray cooling, which cools the drill bit through the nozzle after drilling is completed. However, this method cannot cool the guide sleeve in real time during the machining process, and the coolant utilization rate is low and it is difficult to penetrate to the guide friction surface.

[0004] Therefore, it is necessary to invent a guide sleeve cooling device for deep hole drilling to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model To address the technical problems existing in the background art, this utility model proposes a guide sleeve cooling device for deep hole drilling.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a guide sleeve cooling device for deep hole drilling, comprising a guide sleeve and a cooling assembly fixed externally thereto, wherein a drill bit assembly is installed inside the guide sleeve, and the end of the guide sleeve is installed at the punching end; The cooling assembly includes a fixed sleeve, the end of which is fixed to the outside of the punched end. The outer and inner walls of the fixed sleeve are provided with multiple parallel mounting surfaces. The mounting surfaces are provided with mounting holes, and cooling nozzles are installed in the mounting holes. All cooling nozzles face the outer wall of the guide sleeve. The outer wall of the guide sleeve is provided with multiple evenly spaced guide grooves, the multiple guide grooves have the same internal size, and the multiple cooling nozzles cover the multiple guide grooves.

[0007] Preferably, the mounting surface has four surfaces, and the other surfaces of the fixing sleeve are all arc surfaces. The outer wall of the mounting hole is also provided with a positioning groove. The end of the cooling nozzle is provided with a positioning mounting ring that matches the positioning groove. The positioning groove is provided with multiple evenly spaced fixing holes. The positioning mounting ring is fixed in the positioning groove by matching the fixing holes with bolts.

[0008] Preferably, the ends of the plurality of cooling nozzles are connected to a plurality of coolant pipes, and the plurality of coolant pipes are all connected to an external coolant storage device.

[0009] Preferably, the cooling nozzle is provided with an expansion bucket on its exterior, and the expansion bucket covers the area where the guide channel is set.

[0010] Preferably, the internal dimensions of the fixed sleeve are such that the coolant in the cooling nozzle is sprayed into the guide groove.

[0011] Preferably, the overall size of the guide sleeve is smaller than the internal size of the fixed sleeve, and the internal size of the guide sleeve matches the size of the drill bit assembly.

[0012] Preferably, the internal depth of the fixed sleeve matches the overall length of the guide sleeve.

[0013] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are: 1. This utility model achieves efficient cooling of the guide sleeve through the precise matching of cooling nozzles and guide grooves. Multiple cooling nozzles facing the outer wall of the guide sleeve are provided on the mounting surfaces of the inner and outer walls of the fixed sleeve. Combined with the expansion buckets outside the nozzles covering the area where the guide grooves are set, the coolant can be sprayed accurately and evenly onto the surface of the guide sleeve. The guide grooves on the outer wall of the guide sleeve are evenly spaced and of the same size, which can quickly guide the coolant to flow along the axial direction of the guide sleeve, effectively removing the heat generated by the friction between the drill bit assembly and the guide sleeve during deep hole drilling. 2. The four mounting surfaces of the fixed sleeve of this utility model provide a stable mounting reference for the cooling nozzle. The positioning groove on the outer wall of the mounting hole is precisely matched with the positioning mounting ring at the end of the cooling nozzle. Then, the nozzle is fastened to the fixing hole in the positioning groove by bolts, which can ensure that the installation angle and position of each cooling nozzle are uniform and avoid cooling blind spots caused by nozzle offset. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall installation structure of this utility model; Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the cooling component of this utility model; Figure 4This is a schematic diagram of the external structure of the guide sleeve of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Guide sleeve; 11. Flow guide groove; 2. Cooling assembly; 21. Fixing sleeve; 22. Mounting surface; 23. Mounting hole; 24. Cooling nozzle; 25. Positioning groove; 26. Positioning mounting ring; 27. Fixing hole; 28. Coolant pipe; 29. ​​Expansion bucket; 3. Drill bit assembly. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-4 The guide sleeve cooling device shown includes a guide sleeve 1 and a cooling assembly 2 fixed externally. A drill bit assembly 3 is installed inside the guide sleeve 1, and the end of the guide sleeve 1 is installed at the punching end. The cooling assembly 2 includes a fixed sleeve 21. The end of the fixed sleeve 21 is fixed to the outside of the punched end. The outer wall and inner wall of the fixed sleeve 21 are provided with multiple parallel mounting surfaces 22. The multiple mounting surfaces 22 are provided with mounting holes 23. Cooling nozzles 24 are installed in the multiple mounting holes 23. The multiple cooling nozzles 24 are all facing the outer wall of the guide sleeve 1. The outer wall of the guide sleeve 1 is provided with multiple evenly spaced guide grooves 11, the internal dimensions of the multiple guide grooves 11 are the same, and multiple cooling nozzles 24 cover the multiple guide grooves 11.

[0019] The mounting surface 22 has four surfaces, and the other surfaces of the fixing sleeve 21 are all arc surfaces. The outer wall of the mounting hole 23 is also provided with a positioning groove 25. The end of the cooling nozzle 24 is provided with a positioning mounting ring 26 that matches the positioning groove 25. The positioning groove 25 is provided with multiple evenly spaced fixing holes 27. The positioning mounting ring 26 is fixed in the positioning groove 25 by bolts matching the fixing holes 27.

[0020] Multiple cooling nozzles 24 are connected to multiple coolant pipes 28 at their ends, and all of the coolant pipes 28 are connected to an external coolant storage device.

[0021] The cooling nozzle 24 is provided with an expansion bucket 29 on the outside, which covers the area where the guide channel 11 is set.

[0022] The internal dimensions of the fixed sleeve 21 are such that the coolant in the cooling nozzle 24 is sprayed into the guide groove 11.

[0023] The overall size of the guide sleeve 1 is smaller than the internal size of the fixed sleeve 21, and the internal size of the guide sleeve 1 matches the size of the drill bit assembly 3.

[0024] The internal depth of the fixed sleeve 21 matches the overall length of the guide sleeve 1.

[0025] In this embodiment, the guide sleeve 11 is checked for blockages, deformations, etc., to ensure its surface is smooth and free of impurities, ensuring smooth flow of coolant within the guide sleeve 11. Simultaneously, the fixing sleeve 21 of the cooling assembly 2 is carefully inspected to check if the mounting surface 22 is flat, if the mounting hole 23 is damaged, and if the positioning groove 25 is clear and complete. For the cooling nozzle 24, its nozzle outlet is checked for unobstructed flow, and the positioning mounting ring 26 is checked for damage. Cleaning tools, such as clean cloths and brushes, are prepared to clean each component, removing surface dust, oil, and other impurities to prevent these impurities from entering the device and affecting its normal operation. During installation, appropriate tools are needed, such as wrenches, screwdrivers, and Allen wrenches. Wrenches are used to tighten or loosen bolts to ensure secure connections between components; screwdrivers and Allen wrenches are used to install and disassemble small parts to ensure smooth installation.

[0026] Specifically, when installing the guide sleeve 1 at the punching end, it is necessary to ensure that the centerline of the guide sleeve 1 coincides with the centerline of the punching end to guarantee the stability of the drill assembly 3 and the drilling accuracy during operation. Using a professional installation fixture, the guide sleeve 1 should be slowly and smoothly inserted into the punching end to avoid collisions and damage. When installing the cooling assembly 2, first align the end of the fixing sleeve 21 with the outside of the punching end. Using the mounting surfaces 22 of the outer and inner walls of the fixing sleeve 21, securely fix the fixing sleeve 21 to the outside of the punching end with bolts. During installation, ensure the bolts are tightened to ensure a tight fit between the fixing sleeve 21 and the punching end to prevent loosening during processing, which could affect the cooling effect.

[0027] Specifically, when installing the cooling nozzle 24 into the mounting hole 23, first align the positioning mounting ring 26 at the end of the cooling nozzle 24 with the positioning groove 25 and slowly insert it. An interference fit is used between the positioning mounting ring 26 and the positioning groove 25 to ensure the installation accuracy and stability of the cooling nozzle 24. After insertion, use bolts to connect with the fixing hole 27 through the hole on the positioning mounting ring 26. By tightening the bolts, the cooling nozzle 24 is fixed in the positioning groove 25. When tightening the bolts, operate according to a specific sequence and torque requirements to ensure that the cooling nozzle 24 is securely installed and that the installation angle of each cooling nozzle 24 is consistent, ensuring that the coolant can be evenly sprayed into the guide groove 11 on the outer wall of the guide sleeve 1.

[0028] Specifically, multiple coolant pipes 28 are connected to the corresponding ends of the cooling nozzles 24 using quick-connect couplings or threaded connections to ensure a tight, leak-free connection. When connecting the coolant pipes 28 to external coolant storage equipment, the connection must also be airtight to prevent coolant leakage, waste, and environmental pollution. Sealant or gaskets can be used at the connections to enhance the sealing effect. After connection, a pressure test is performed on the entire coolant piping system to check for leaks and ensure that the coolant can be delivered normally to each cooling nozzle 24, providing reliable cooling for the guide sleeve 1.

[0029] In this embodiment, during deep hole drilling, the intense friction between the tool and the workpiece generates a large amount of heat. If this heat cannot be dissipated in time, it will lead to accelerated tool wear, decreased machining accuracy, and even workpiece deformation. This guide sleeve cooling device achieves efficient, all-around cooling of the guide sleeve 1 through the ingenious combination of multiple cooling nozzles 24 and guide channels 11. The cooling nozzles 24 are evenly distributed on the mounting surface 22 of the fixed sleeve 21, enabling precise spraying of coolant into the guide channels 11 on the outer wall of the guide sleeve 1. The design of the guide channels 11 increases the contact area between the coolant and the guide sleeve 1, allowing the coolant to fully absorb the heat from the guide sleeve 1 and quickly carry it away, effectively solving the problem of heat accumulation during deep hole drilling.

[0030] In this embodiment, the cooling nozzles 24 are precisely positioned via the positioning groove 25 and the positioning mounting ring 26, ensuring that the position of each cooling nozzle 24 is accurate and that the coolant can be sprayed evenly onto the outer wall of the guide sleeve 1, avoiding localized overheating caused by uneven cooling. The fixed sleeve 21 is tightly fitted to the guide sleeve 1, with the internal depth of the fixed sleeve 21 matching the overall length of the guide sleeve 1, and the overall size of the guide sleeve 1 being smaller than the internal size of the fixed sleeve 21. This precise dimensional design ensures the stability of the device during operation. During processing, even under large cutting forces and vibrations, the guide sleeve 1 remains stable without shifting or shaking, thus ensuring the stable operation of the drill assembly 3 and providing a reliable guarantee for drilling accuracy. In deep hole machining of precision molds, this device can control the drilling deviation within a very small range, meeting the requirements of high-precision machining.

[0031] In this embodiment, the cooling nozzle 24 is independently installed, fixed in the positioning groove 25 by bolts to the fixing hole 27. This design makes the maintenance and replacement of the cooling nozzle 24 very convenient. When the cooling nozzle 24 malfunctions, such as clogging or damage, the operator only needs to unscrew the bolts to easily remove it from the positioning groove 25 for cleaning, repair, or replacement, without disassembling the entire device, greatly saving maintenance time and costs. Compared with traditional cooling devices, this guide sleeve cooling device is more convenient for maintaining and replacing cooling components, improving the ease of use and economy of the equipment, reducing equipment downtime, and increasing production efficiency.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling device for a guide sleeve in deep hole drilling, characterized in that: It includes a guide sleeve (1) and a cooling assembly (2) fixed externally, a drill assembly (3) is installed inside the guide sleeve (1), and the end of the guide sleeve (1) is installed at the punching end; The cooling assembly (2) includes a fixed sleeve (21), the end of which is fixed to the outside of the punch end. The outer and inner walls of the fixed sleeve (21) are provided with multiple parallel mounting surfaces (22). The mounting surfaces (22) are provided with mounting holes (23). Cooling nozzles (24) are installed in the mounting holes (23). The multiple cooling nozzles (24) face the outer wall of the guide sleeve (1). The outer wall of the guide sleeve (1) is provided with a plurality of evenly spaced guide grooves (11), the plurality of guide grooves (11) have the same internal size, and the plurality of cooling nozzles (24) cover the plurality of guide grooves (11).

2. The guide sleeve cooling device for deep hole drilling according to claim 1, characterized in that: The mounting surface (22) is provided with four, and the other surfaces of the fixing sleeve (21) are all arc surfaces. The outer wall of the mounting hole (23) is also provided with a positioning groove (25). The end of the cooling nozzle (24) is provided with a positioning mounting ring (26) that matches the positioning groove (25). The positioning groove (25) is provided with multiple evenly spaced fixing holes (27). The positioning mounting ring (26) is fixed in the positioning groove (25) by bolts matching the fixing holes (27).

3. The guide sleeve cooling device for deep hole drilling according to claim 1, characterized in that: Multiple cooling nozzles (24) are connected to multiple coolant pipes (28) at their ends, and all of the multiple coolant pipes (28) are connected to an external coolant storage device.

4. The guide sleeve cooling device for deep hole drilling according to claim 1, characterized in that: The cooling nozzle (24) is provided with an expansion bucket (29) on its exterior, and the expansion bucket (29) covers the area where the guide groove (11) is set.

5. A guide sleeve cooling device for deep hole drilling according to claim 1, characterized in that: The internal dimensions of the fixed sleeve (21) are such that the coolant in the cooling nozzle (24) is sprayed into the guide groove (11).

6. The guide sleeve cooling device for deep hole drilling according to claim 1, characterized in that: The overall size of the guide sleeve (1) is smaller than the internal size of the fixed sleeve (21), and the internal size of the guide sleeve (1) matches the size of the drill bit assembly (3).

7. A guide sleeve cooling device for deep hole drilling according to claim 1, characterized in that: The internal depth of the fixed sleeve (21) matches the overall length of the guide sleeve (1).

Images