A variable diameter sleeve for a turning tool having two sets of internal cooling channels

Abstract

The utility model relates to tool technical field especially is a kind of tool holder reducing sleeve with two sets of internal cooling channels, including tool holder body, the axial setting of tool holder body has tool mounting hole, first internal cooling channel and second internal cooling channel, first internal cooling channel and second internal cooling channel are located in the circumferential side of tool mounting hole, first internal cooling channel penetrates the front end face and rear end face of tool holder body, the middle part of tool holder body is radially set with the first liquid supply hole that communicates with the rear end of second internal cooling channel, the front end of second internal cooling channel penetrates the front end face of tool holder body.This application has two sets of independent control internal cooling channels, flexible, convenient to use, when using, it can satisfy two different supply cooling liquid mode, to meet the use demand of the utility model application in two different occasions, ensure that cooling liquid can be accurately sprayed on the cutting edge of tool, to ensure that the cooling and chip removal effect of cooling liquid to tool.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a turning tool reducing sleeve with two sets of internal cooling channels. Background Technology

[0002] The tool reducer sleeve is used to mount the lathe tool, acting as a bridge connecting the lathe and the tool. However, existing tool reducers have a limited function, merely fixing the tool. When tool cooling is required, an external coolant supply pipe is needed to spray coolant onto the tool, which is insufficient to meet the demands of modern machining. For example, Chinese patent applications 202320460239.1 (disclosing a tool reducer sleeve in a lathe tool holder), 201620197428.4 (disclosing a tool reducer sleeve), and 202310081589.1 (disclosing a tool sleeve locking structure) all only fix the tool and cannot spray coolant onto it. Therefore, the shortcomings are obvious, and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a tool reducing sleeve with two sets of internal cooling channels.

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

[0005] A turning tool reducing sleeve with two sets of internal cooling channels includes a tool sleeve body. The tool sleeve body has a tool mounting hole, a first internal cooling channel and a second internal cooling channel arranged axially. The first internal cooling channel and the second internal cooling channel are located around the tool mounting hole. The first internal cooling channel penetrates the front end face and the rear end face of the tool sleeve body. A first liquid supply hole communicating with the rear end of the second internal cooling channel is radially opened in the middle of the tool sleeve body. The front end of the second internal cooling channel penetrates the front end face of the tool sleeve body.

[0006] Furthermore, the tool holder body has a locking hole in the radial direction, which communicates with the tool mounting hole. The locking hole is threaded with a locking fastener, the inner end of which can extend into the tool mounting hole.

[0007] Furthermore, there are multiple locking holes, which are arranged along the axis of the tool holder body on the peripheral wall of the tool holder body.

[0008] Furthermore, the tool reducing sleeve with two sets of internal cooling channels also includes a spray head installed on the front end face of the tool sleeve body, with one spray head connected to the front end of the first internal cooling channel and the front end of the second internal cooling channel.

[0009] Furthermore, the front end face of the blade sheath body is recessed with an insertion hole, and a spray head is inserted into an insertion hole.

[0010] Furthermore, the spray head includes an insert ring fitted into an insert hole and a spray ball rotatably connected to the insert ring, the spray ball having a spray hole; the spray hole communicates with the front end of the first internal cooling channel or the front end of the second internal cooling channel, or the spray hole communicates with the front end of the first internal cooling channel or the front end of the second internal cooling channel through the inner hole of the insert ring.

[0011] Furthermore, a sealing ring is fitted into the inner wall of the fitting hole, and the sealing ring is fitted onto the outer side wall of the fitting ring.

[0012] Furthermore, the inner hole of the injection ball and the insert ring are interference fit.

[0013] Furthermore, the tool reducing sleeve with two sets of internal cooling channels also includes a tool holder fitted outside the tool holder body. The tool holder has a second liquid supply hole communicating with the first liquid supply hole, and the tool holder is detachably connected to a locking member for locking the tool holder body onto the tool holder.

[0014] Furthermore, at least two sealing rings are fitted into the inner hole of the tool holder and / or the outer wall of the tool sleeve body, with the first liquid supply hole and the second liquid supply hole located between two adjacent sealing rings.

[0015] The beneficial effects of this invention are as follows: In practical applications, the tool holder of the lathe tool is installed in the tool mounting hole, and the cutting edge of the lathe tool is located outside the front end of the tool holder body. When this invention is used on a milling-turning lathe, the cutting edge of the lathe tool corresponds to the first internal cooling channel, and coolant is supplied to the inner end of the first internal cooling channel, so that the coolant is accurately sprayed onto the cutting edge of the lathe tool from the front end of the first internal cooling channel. When this invention is used on a conventional lathe, the cutting edge of the lathe tool corresponds to the second internal cooling channel, and coolant is supplied to the first supply hole. The coolant flows through the first supply hole into the second internal cooling channel, and the second internal cooling channel accurately sprays the coolant onto the cutting edge of the lathe tool. Of course, depending on the actual application scenario, coolant can be selectively supplied to the first and second internal cooling channels, or coolant can be supplied to both the first and second internal cooling channels simultaneously, so that coolant is sprayed from both the first and second internal cooling channels. This invention features two independently controlled internal cooling channels, offering flexibility and convenience in use. It can accommodate two different coolant supply methods, thus meeting the application requirements of this invention in two different situations, achieving a dual-purpose effect. It can accurately spray coolant onto the cutting edge of the tool, ensuring the coolant's cooling and chip removal effects on the cutting tool. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0018] Figure 3 This is an exploded structural diagram of the present invention.

[0019] Figure 4 This is a cross-sectional view of the blade sheath body of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the blade sheath body of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the blade sheath body and the spray head of this utility model from another perspective.

[0022] Figure 7 This is a three-dimensional structural diagram of the present invention mounted on a side-fixed tool holder.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Tool holder body; 2. Tool mounting hole; 3. First internal cooling channel; 4. Second internal cooling channel; 5. First liquid supply hole; 6. Locking hole; 7. Locking fastener; 8. Spray head; 9. Insertion hole; 10. Insertion ring; 11. Spray ball; 12. Spray hole; 14. Tool holder; 15. Second liquid supply hole; 16. Locking element; 18. Limiting ring; 19. Positioning facet; 20. Locking hole; 21. Lathe tool; 22. Side-locked tool holder. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0026] like Figures 1 to 7 As shown, the present invention provides a turning tool reducing sleeve with two sets of internal cooling channels, which includes a tool sleeve body 1. The tool sleeve body 1 is axially provided with a tool mounting hole 2, a first internal cooling channel 3 and a second internal cooling channel 4. The first internal cooling channel 3 and the second internal cooling channel 4 are located on the periphery of the tool mounting hole 2. The first internal cooling channel 3 penetrates the front end face and the rear end face of the tool sleeve body 1. The middle part of the tool sleeve body 1 is radially provided with a first liquid supply hole 5 that communicates with the rear end of the second internal cooling channel 4. The front end of the second internal cooling channel 4 penetrates the front end face of the tool sleeve body 1.

[0027] In practical applications, the tool holder of the lathe tool 21 is installed in the tool mounting hole 2, and the cutting edge of the lathe tool 21 is located outside the front end of the tool holder body 1. When this invention is used on a milling and turning lathe, the cutting edge of the lathe tool 21 corresponds to the first internal cooling channel 3, and coolant is supplied to the inner end of the first internal cooling channel 3, so that the coolant is accurately sprayed from the front end of the first internal cooling channel 3 onto the cutting edge of the lathe tool 21. When this invention is used on a conventional lathe, the cutting edge of the lathe tool 21 corresponds to the second internal cooling channel 4, and coolant is supplied to the first supply hole 5. The coolant flows through the first supply hole 5 into the second internal cooling channel 4, and the second internal cooling channel 4 accurately sprays the coolant onto the cutting edge of the lathe tool 21. Of course, depending on the actual application scenario, coolant can be selectively supplied to the first internal cooling channel 3 and the second internal cooling channel 4, or coolant can be supplied to the first internal cooling channel 3 and the second internal cooling channel 4 simultaneously, so that coolant is sprayed from both the first internal cooling channel 3 and the second internal cooling channel 4. This utility model has two independently controlled internal cooling channels, which are flexible and convenient to use. It can meet the needs of two different coolant supply methods during use, thus meeting the application requirements of this utility model in two different occasions and achieving the effect of one product serving two purposes. It can accurately spray coolant onto the cutting edge of the tool, ensuring the cooling and chip removal effect of the coolant on the cutting tool 21.

[0028] In this embodiment, the tool holder body 1 has a locking hole 6 radially formed, which communicates with the tool mounting hole 2. A locking fastener 7 is threadedly connected to the locking hole 6, and the inner end of the locking fastener 7 can extend into the tool mounting hole 2; specifically, the locking fastener 7 is a screw. In practical applications, after inserting the shank of the lathe tool 21 into the tool mounting hole 2, the locking fastener 7 is tightened so that the inner end of the locking fastener 7 abuts against the shank of the lathe tool 21, thereby locking the shank of the lathe tool 21 into the tool mounting hole 2 of the tool holder body 1, ensuring the firmness of the lathe tool 21 mounted on the tool holder body 1.

[0029] In this embodiment, there are multiple locking holes 6, which are arranged along the axis of the tool holder body 1 on the peripheral wall of the tool holder body 1. Each locking hole 6 is detachably connected to a locking fastener 7. This structural design, by using multiple locking fasteners 7 to lock the shank of the lathe tool 21 to the tool holder body 1, further improves the firmness of locking the lathe tool 21.

[0030] In this embodiment, the tool reducing sleeve with two sets of internal cooling channels also includes a spray head 8 mounted on the front end face of the sleeve body 1. The front end of the first internal cooling channel 3 and the front end of the second internal cooling channel 4 are each connected to a spray head 8. In practical applications, the coolant in the first internal cooling channel 3 and the coolant in the second internal cooling channel 4 are accurately sprayed onto the cutting edge of the tool 21 through the corresponding spray head 8.

[0031] In this embodiment, the front end face of the blade sheath body 1 is recessed with an insertion hole 9, and a spray head 8 is inserted into one insertion hole 9. This structural design makes the spray head 8 and the blade sheath body 1 compact, realizes the embedded assembly of the spray head 8, protects the spray head 8, and prevents the spray head 8 from being exposed and easily damaged by collision or wear with external structures.

[0032] In this embodiment, the spray head 8 includes an insert ring 10 fitted into an insert hole 9 and a spray ball 11 rotatably connected to the insert ring 10. The spray ball 11 has a spray hole 12. The spray hole 12 communicates with the front end of the first internal cooling channel 3 or the front end of the second internal cooling channel 4, or the spray hole 12 communicates with the front end of the first internal cooling channel 3 or the front end of the second internal cooling channel 4 through the inner hole of the insert ring 10. With this structural design, the spray ball 11 can rotate relative to the insert ring 10 to adjust the spray angle of the spray hole 12 of the spray ball 11, so that the coolant sprayed from the spray hole 12 can be accurately sprayed onto the cutting edge of the cutting tool 21 to meet the different spray angle requirements of the coolant.

[0033] In this embodiment, a sealing ring is fitted into the inner wall of the fitting hole 9, and the sealing ring is sleeved on the outer side wall of the fitting ring 10. The sealing ring can seal the gap between the inner wall of the fitting hole 9 and the outer side wall of the fitting ring 10, improve the sealing performance, and prevent leakage.

[0034] In this embodiment, the spray ball 11 and the inner hole of the mounting ring 10 are interference-fitted. This ensures that the spray angle of the spray hole 12 of the spray ball 11 can be adjusted, while also preventing the spray ball 11 from rotating freely relative to the mounting ring 10. When it is necessary to adjust the spray angle of the spray hole 12 of the spray ball 11, a force is applied to the spray ball 11, allowing it to rotate relative to the mounting ring 10. For example, an external rod is inserted into the spray hole 12 of the spray ball 11, and the rod is swung, causing the rod to drive the spray ball 11 to rotate relative to the mounting ring 10, thereby achieving angle adjustment of the spray ball 11.

[0035] In this embodiment, the tool reducing sleeve with two sets of internal cooling channels also includes a tool holder 14 fitted outside the tool holder body 1. The bottom surface of the tool holder 14 has a second liquid supply hole 15 communicating with the first liquid supply hole 5. The tool holder 14 is detachably connected to a locking member 16 for locking the tool holder body 1 onto the tool holder 14. Specifically, the locking member 16 is threadedly connected to the tool holder 14, and the inner end of the locking member 16 can extend into the inner hole of the tool holder 14. The locking member 16 is a locking bolt.

[0036] In practical applications, when it needs to be installed on a conventional lathe, the tool holder body 1 with the cutting tool 21 is inserted into the inner hole of the tool holder 14, and the locking member 16 locks the tool holder body 1 into the inner hole of the tool holder 14 to ensure the assembly of the tool holder body 1 and the tool holder 14. Then, the tool holder 14 is installed on the worktable of the conventional lathe, and coolant is supplied to the second liquid supply hole 15. The coolant enters the first liquid supply hole 5 from the second liquid supply hole 15, flows from the first liquid supply hole 5 to the second internal cooling channel 4, and finally the coolant is sprayed from the second internal cooling channel 4 onto the cutting edge of the cutting tool 21.

[0037] Specifically, a limiting ring 18 protrudes from the front circumference of the tool holder body 1, and the limiting ring 18 is used to abut against the end face of the tool holder 14. During the assembly of the tool holder body 1 into the inner hole of the tool holder 14, when the limiting ring 18 abuts against the end face of the tool holder 14, it proves that the tool holder body 1 is installed in place. At this time, the locking member 16 locks the tool holder body 1 into the inner hole of the tool holder 14. The limiting ring 18 plays a limiting role in the assembly of the tool holder body 1, preventing the tool holder body 1 from being over-assembled into the inner hole of the tool holder 14.

[0038] Specifically, the circumference of the tool holder body 1 is provided with a positioning surface 19, and the inner end face of the locking member 16 is used to contact the positioning surface 19. Multiple locking holes 6 are arranged along the length direction of the positioning surface 19. In practical applications, after the tool holder body 1 is installed in the inner hole of the tool holder 14, the tool holder body 1 is rotated so that the positioning surface 19 on the tool holder body 1 corresponds to the locking hole 6. Then, the locking member 7 is tightened until the inner end of the locking member 7 abuts against the positioning surface 19, so that the locking member 7 firmly locks the tool holder body 1 onto the tool holder 14.

[0039] Furthermore, there are two positioning surfaces 19, which are symmetrically arranged on the blade holder body 1.

[0040] Specifically, the tool holder 14 has multiple locking holes 20; in practical applications, the bolt assembly passes through the locking holes 20 and connects to the worktable of a conventional lathe to lock the tool holder 14 onto the worktable of the conventional lathe.

[0041] In this embodiment, at least two sealing rings are fitted into the inner hole of the cutter holder 14 and / or the outer wall of the cutter sleeve body 1, and the first liquid supply hole 5 and the second liquid supply hole 15 are both located between two adjacent sealing rings. The sealing rings seal the gap between the inner hole of the cutter holder 14 and the outer wall of the cutter sleeve body 1, improving the sealing performance and preventing leakage.

[0042] In addressing the issue that traditional side-mounted tool holders 22 lack a coolant spray structure at their front end, when a cutting tool 21 is mounted on the side-mounted tool holder 22, the coolant spray structure next to the machine tool spindle is far from the cutting edge at the front end of the cutting tool 21, resulting in insufficient cooling during cutting, the tool holder body 1 of this application is provided with a first internal cooling channel 3. The tool holder body 1 is inserted into the tool holder hole of the side-mounted tool holder 22 from the rear end, allowing the coolant entering from the rear end of the side-mounted tool holder 22 to flow into the first internal cooling channel 3 of the tool holder body 1. The coolant is then sprayed out from the spray ball 11 of the first internal cooling channel 3, spraying it close to the cutting edge of the cutting tool 21, thereby achieving precise and sufficient cooling.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A tool reducing sleeve with two sets of internal cooling channels, characterized in that: The tool holder body (1) includes a tool mounting hole (2), a first internal cooling channel (3) and a second internal cooling channel (4) axially arranged on the tool mounting hole (2). The first internal cooling channel (3) and the second internal cooling channel (4) are located on the periphery of the tool mounting hole (2). The first internal cooling channel (3) penetrates the front end face and the rear end face of the tool holder body (1). The middle part of the tool holder body (1) is radially provided with a first liquid supply hole (5) that communicates with the rear end of the second internal cooling channel (4). The front end of the second internal cooling channel (4) penetrates the front end face of the tool holder body (1).

2. A tool reducing sleeve with two sets of internal cooling channels according to claim 1, characterized in that: The tool holder body (1) has a locking hole (6) in the radial direction. The locking hole (6) is connected to the tool mounting hole (2). The locking hole (6) is threaded with a locking fastener (7). The inner end of the locking fastener (7) can extend into the tool mounting hole (2).

3. A tool reducing sleeve with two sets of internal cooling channels according to claim 2, characterized in that: There are multiple locking holes (6), which are arranged along the axis of the tool holder body (1) on the peripheral wall of the tool holder body (1).

4. A turning tool reducing sleeve with two sets of internal cooling channels according to claim 1, characterized in that: The tool reducing sleeve with two sets of internal cooling channels also includes a spray head (8) installed on the front end face of the tool sleeve body (1), and the front end of the first internal cooling channel (3) and the front end of the second internal cooling channel (4) are each connected to a spray head (8).

5. A turning tool reducing sleeve with two sets of internal cooling channels according to claim 4, characterized in that: The front end face of the blade sheath body (1) is recessed with an insert hole (9), and a spray head (8) is inserted into an insert hole (9).

6. A turning tool reducing sleeve with two sets of internal cooling channels according to claim 5, characterized in that: The spray head (8) includes an insert ring (10) fitted in an insert hole (9) and a spray ball (11) rotatably connected to the insert ring (10). The spray ball (11) has a spray hole (12). The spray hole (12) is connected to the front end of the first internal cooling channel (3) or the front end of the second internal cooling channel (4), or the spray hole (12) is connected to the front end of the first internal cooling channel (3) or the front end of the second internal cooling channel (4) through the inner hole of the insert ring (10).

7. A turning tool reducing sleeve with two sets of internal cooling channels according to claim 6, characterized in that: A sealing ring is fitted into the inner wall of the fitting hole (9), and the sealing ring is fitted onto the outer side wall of the fitting ring (10).

8. A tool reducing sleeve with two sets of internal cooling channels according to claim 6, characterized in that: The inner hole of the spray ball (11) and the insert ring (10) are interference fit.

9. A turning tool reducing sleeve with two sets of internal cooling channels according to any one of claims 1 to 8, characterized in that: The tool reducing sleeve with two internal cooling channels also includes a tool holder (14) fitted outside the tool holder body (1). The tool holder (14) has a second liquid supply hole (15) communicating with the first liquid supply hole (5). The tool holder (14) is detachably connected to a locking member (16) for locking the tool holder body (1) onto the tool holder (14).

10. A turning tool reducing sleeve with two sets of internal cooling channels according to claim 9, characterized in that: At least two sealing rings are fitted into the inner hole of the tool holder (14) and / or the outer wall of the tool sleeve body (1), with the first liquid supply hole (5) and the second liquid supply hole (15) located between two adjacent sealing rings.

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