An internal water outlet cutter bar

Abstract

This utility model discloses an internally outlet water-cooled cutter bar, including a handle and a cutter head. The handle has a water inlet and a spirally twisting main water channel. The cutter head has a branch water channel connected to the main water channel and a blade groove. The branch water channel includes two first branches at both ends and a middle second branch with a larger inner diameter. A water storage chamber is provided between the main water channel and the branch water channel. The handle is equipped with an adjusting screw to regulate the pressure; the cutter head is equipped with a branch channel screw to regulate the flow rate. This structure enhances the stability of water flow through the spiral main water channel and segmented branch water channels. The dual regulation mechanism enables flexible control of pressure and flow rate, adapting to different materials and cutting parameters, improving cooling and chip removal effects and equipment adaptability.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to an internally water-cooled cutting tool holder. Background Technology

[0002] As a key component in metal cutting, the internal coolant shank precisely delivers coolant to the cutting area of ​​the tool through internal water channels, achieving cooling, lubrication, and chip removal functions. It plays an important role in improving machining efficiency, extending tool life, and ensuring workpiece machining quality.

[0003] In existing technologies, the main water channel of internally supplied water cooler cutter bars often adopts a straight cylindrical structure design. While this structure is easy to manufacture, the water flow is prone to turbulence during transport due to factors such as changes in flow velocity and the roughness of the inner wall of the pipe. This results in significant fluctuations in water pressure, causing not only unstable coolant delivery but also water dispersion, making it difficult to form a concentrated, directional jet. Consequently, the coolant cannot accurately act on the cutting area, significantly reducing cooling efficiency. Simultaneously, the pressure fluctuations generated by turbulence exacerbate water energy loss, leading to insufficient effective flow reaching the cutting area. This affects the timely removal of chips, causing chip accumulation, secondary cutting, and other problems, increasing the risk of tool wear and workpiece surface scratches.

[0004] In terms of water pressure and flow rate regulation, existing internal water-cooled tool holders have relatively limited adjustment methods. Some tool holders lack dedicated adjustment structures and can only regulate the overall flow rate through external water pump pressure, making it difficult to precisely control the flow rate according to the actual needs of the cutting area. Other tool holders, while equipped with simple throttling structures, have limited adjustment ranges and cannot achieve coordinated regulation of pressure and flow rate. When machining different materials or using different cutting parameters, fixed water pressure and flow rate are difficult to match the actual working conditions: if the flow rate is too high, it may lead to coolant splashing and waste, or even impact the cutting area causing vibration; if the flow rate is insufficient, it cannot meet the cooling and chip removal requirements, severely restricting the adaptability of the tool holder to complex machining scenarios.

[0005] Therefore, how to improve the water flow stability of the internal water outlet cutter bar to ensure cooling and chip removal effects, while achieving flexible adjustment of water pressure and flow rate to adapt to diverse processing needs, has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] This invention addresses the problems of poor water flow stability and limited pressure and flow regulation methods in existing internal water outlet cutter bars by providing an internal water outlet cutter bar with good water flow stability and flexible pressure and flow regulation.

[0007] This utility model provides the following technical solution: an internal water-discharge cutter bar, including a handle and a cutter head. One end of the handle is provided with a water inlet, and the other end of the handle is connected to the cutter head. The handle has a main water channel communicating with the water inlet. The cutter head has a branch water channel communicating with the main water channel and a blade groove for placing the blade. The water outlet direction of the branch water channel corresponds to the blade tip installed on the blade groove. The main water channel is a flow channel that extends spirally along its central axis. The main water channel is formed by at least one spirally twisted inner wall surface. The branch water channel includes a first branch at both ends and a second branch in its middle section. The inner diameter of the second branch is larger than that of the first branch.

[0008] In some embodiments, a water storage chamber is provided at the connection between the main waterway and the branch waterway, and the diameter of the water storage chamber is much larger than the diameter of the branch waterway.

[0009] In some embodiments, the tool holder is provided with an adjusting threaded hole, and an adjusting screw is provided in the adjusting threaded hole. The adjusting threaded hole is connected to the water storage chamber, and the end of the adjusting screw is inserted into the water storage chamber.

[0010] In some embodiments, the second branch is located at the bend of the first branch at both ends.

[0011] In some embodiments, the blade head is provided with a first water outlet groove, the end of the branch water channel is connected to the first water outlet groove, a first water outlet pin is installed in the first water outlet groove, the first water outlet pin is provided with a first water outlet connected to the branch water channel, and the water outlet direction of the first water outlet corresponds to the blade tip installed on the blade groove.

[0012] In some embodiments, the cutter head is provided with a second water outlet groove, and a second water outlet pin is provided in the second water outlet groove. The first water outlet pin and the second water outlet pin are arranged at intervals. The second water outlet pin is provided with a second water outlet. The cutter head is provided with a connecting branch. The second water outlet is connected to the water storage chamber through the connecting branch. The central axis of the first water outlet and the central axis of the second water outlet are arranged at an angle and respectively scour the left and right sides of the cutter head.

[0013] In some embodiments, the cutter head is provided with a branch channel adjustment hole, and a branch channel screw is fitted inside the branch channel adjustment hole. The branch channel adjustment hole is connected to the branch channel, and the end of the branch channel screw is inserted into the branch channel.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] 1. Enhanced water flow stability: The main waterway adopts a spiral twisting structure extending along the central axis, which enables the water to form a stable rotating flow state during the flow process, reducing turbulence and pressure fluctuations; at the same time, the branch waterway, through the segmented design of the first branch and the large inner diameter second branch, can form a buffer during water flow turning or conveying, further improving water flow stability and providing a foundation for subsequent precise cooling and chip removal.

[0016] II. Flexible Pressure and Flow Regulation: The water storage chamber at the connection between the main waterway and the branch waterway can change its effective volume by adjusting the screw and adjusting the threaded hole, thereby regulating the water pressure entering the branch waterway; the branch screw in the branch waterway adjustment hole can directly change the flow cross-sectional area of ​​the branch waterway, realizing fine regulation of the outflow rate. This dual regulation mechanism can adapt to the processing needs of different materials and cutting parameters, improving the adaptability of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0020] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model from another angle;

[0023] Figure 6 This is a schematic diagram of the internal structure of Embodiment 2 of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of Embodiment 3 of this utility model from another angle;

[0026] Figure 9 This is a schematic diagram of the internal structure of Embodiment 3 of this utility model.

[0027] In the diagram: 1. Blade holder; 11. Water inlet; 12. Adjusting threaded hole; 13. Adjusting screw; 2. Blade head; 21. Blade groove; 22. Connecting branch; 23. Branch adjusting hole; 24. Branch screw; 25. First water outlet groove; 26. Second water outlet groove; 3. Main water channel; 4. Branch water channel; 41. First branch; 42. Second branch; 5. Water storage chamber; 6. First water outlet pin; 61. First water outlet; 7. Second water outlet pin; 71. Second water outlet. Detailed Implementation

[0028] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0031] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0033] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0034] Example 1

[0035] This specification provides an internal water discharge cutter bar in Example 1. Please refer to [link / reference]. Figures 1-3As shown, this embodiment uses an internal water outlet groove cutter bar as an example. This description is merely illustrative and does not limit the scope of this application. For example, it includes a cutter handle 1 and a cutter head 2. One end of the cutter handle 1 is provided with a water inlet 11, and the other end of the cutter handle 1 is connected to the cutter head 2. The cutter handle 1 has a main water channel 3 that communicates with the water inlet 11. The cutter head 2 has a branch water channel 4 that communicates with the main water channel 3 and a blade groove 21 for placing the blade. The water outlet direction of the branch water channel 4 corresponds to the blade tip installed on the blade groove 21. The main water channel 3 is a flow channel that extends spirally along its central axis. The main water channel 3 is formed by at least one spirally twisted inner wall surface. The branch water channel 4 includes a first branch 41 at both ends and a second branch 42 located in its middle section. The inner diameter of the second branch 42 is larger than that of the first branch 41.

[0036] It should be noted that the main waterway 3 is a cylindrical flow channel.

[0037] like Figures 1-3 As shown, a water storage chamber 5 is provided at the connection between the main waterway 3 and the branch waterway 4. The diameter of the water storage chamber 5 is much larger than that of the branch waterway 4. It should be noted that the setting of the water storage chamber 5 can form a buffer area by expanding the water flow transition space, effectively weakening the turbulent impact when the spiral water flow of the main waterway 3 enters the branch waterway 4, further reducing water flow pressure fluctuations and improving the stability of the water output from the branch waterway 4; at the same time, the larger cavity volume provides sufficient margin for water flow pressure regulation.

[0038] It should be noted that the diameter of the water storage chamber 5 is at least twice the diameter of the branch channel 4.

[0039] like Figures 1-3 As shown, the tool holder 1 is provided with an adjustment threaded hole 12, and an adjustment screw 13 is provided in the adjustment threaded hole 12. The adjustment threaded hole 12 is connected to the water storage chamber 5. The end of the adjustment screw 13 is inserted into the water storage chamber 5. It should be noted that when the insertion depth of the adjustment screw 13 is changed, the effective volume of the water storage chamber 5 can be changed to achieve linear control of the water flow pressure, making the pressure regulation more precise and adapting to the differentiated requirements of coolant pressure under different cutting scenarios.

[0040] Example 2

[0041] This specification provides an internal water outlet cutter bar in Embodiment 2, taking an internal water outlet inner hole cutter bar as an example. It is basically the same as Embodiment 1, except that... (Please refer to...) Figures 4-6As shown, the second branch 42 is located at the bend of the first branch 41 at both ends. It should be noted that when water flows through the bend in the branch channel 4, it is prone to turbulence and local pressure loss due to sudden changes in direction. By placing the large-diameter second branch 42 here, the local resistance coefficient of the water flow when turning can be effectively reduced by expanding the flow cross-section of the bend area, thus weakening the turbulence intensity. At the same time, the larger cavity space can form a turning buffer, preventing the water flow from forming eddies or sudden pressure drops at the bend, allowing the water flow to complete the direction change more smoothly, reducing energy loss, and further ensuring the stability and continuity of the water outlet of the branch channel 4, providing a continuous and stable water flow basis for precise cooling and chip removal.

[0042] Example 3

[0043] This specification provides an internally outlet cutter bar in Embodiment 3, taking an internally outlet outer circular cutter bar as an example. It is basically the same as Embodiment 1, except that... (Please refer to...) Figures 7-9 As shown, the cutter head 2 is provided with a first water outlet groove 25, and the end of the branch water channel 4 is connected to the first water outlet groove 25. A first water outlet pin 6 is installed in the first water outlet groove 25. The first water outlet pin 6 is provided with a first water outlet 61 connected to the branch water channel 4. The water outlet direction of the first water outlet 61 corresponds to the cutting tip of the cutting tool installed on the cutting tool groove 21. It should be noted that the first water outlet 61, through precise positioning design, can directly guide the coolant to the cutting tip area where the cutting heat is most concentrated, avoid water flow dispersion, significantly improve cooling efficiency, and reduce thermal deformation and wear of the cutting tool caused by overheating. In addition, the modular water outlet pin structure facilitates later maintenance and replacement, reducing the overall maintenance cost of the cutting tool holder.

[0044] In other embodiments, such as Figures 7-9 As shown, the cutter head 2 is provided with a second water outlet groove 26, and a second water outlet pin 7 is provided in the second water outlet groove 26. The first water outlet pin 6 and the second water outlet pin 7 are arranged at intervals. The second water outlet pin 7 is provided with a second water outlet 71. The cutter head 2 is provided with a connecting branch channel 22. The second water outlet 71 is connected to the water storage chamber 5 through the connecting branch channel 22. The central axis of the first water outlet 61 and the central axis of the second water outlet 71 are arranged at an angle and respectively rinse the left and right sides of the blade. It should be noted that this structure, through the interval arrangement of the first and second water outlet pins 7, can avoid the two water outlets from being separated. The water flow from the nozzles does not interfere with each other, ensuring the stability of their respective cooling paths. The angled design allows the water flow to accurately cover the cutting areas on both sides of the blade, significantly improving heat exchange efficiency and effectively suppressing blade deformation or wear caused by local high temperatures. Meanwhile, the second outlet 71 is connected to the water storage chamber 5 through the connecting branch 22, which can ensure stable water pressure by means of the pressure stabilizing effect of the water storage chamber 5. The independent water outlet pin structure makes it easy to replace according to different blade specifications and flexibly adjust the water outlet angle to adapt to diverse cutting needs, further enhancing the versatility and machining reliability of the tool holder.

[0045] In other embodiments, such as Figures 7-9 As shown, the cutter head 2 is provided with a branch channel adjustment hole 23, and a branch channel screw 24 is fitted inside the branch channel adjustment hole 23. The branch channel adjustment hole 23 is connected to the branch water channel 4, and the end of the branch channel screw 24 is inserted into the branch water channel 4. It should be noted that the fitting structure of the branch channel adjustment hole 23 and the branch channel screw 24 can change the insertion depth of the screw into the branch water channel 4 by rotating the screw, thereby directly adjusting the effective flow cross-sectional area of ​​the branch water channel 4 and realizing fine control of the water flow rate. This structure is easy to operate and can quickly adjust the flow rate according to parameters such as the hardness of the cutting material and the cutting speed, avoiding the waste of coolant due to excessive flow or the impact of insufficient flow on the cooling and chip removal effect. At the same time, the tight fit between the screw and the hole can ensure the sealing of the structure after adjustment, prevent water leakage, and improve the stability and reliability of the cutter head operation.

[0046] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An internal water-discharge cutter bar, comprising a handle (1) and a cutter head (2), wherein one end of the handle (1) is provided with a water inlet (11), and the other end of the handle (1) is connected to the cutter head (2), characterized in that: The handle (1) has a main waterway (3) connected to the water inlet (11) inside. The blade head (2) has a branch waterway (4) connected to the main waterway (3) and a blade groove (21) for placing the blade. The water outlet direction of the branch waterway (4) corresponds to the blade tip installed on the blade groove (21). The main waterway (3) is a flow channel that extends spirally along its central axis. The main waterway (3) is formed by at least one spirally twisted inner wall surface. The branch waterway (4) includes a first branch (41) at both ends and a second branch (42) in its middle section. The inner diameter of the second branch (42) is larger than that of the first branch (41).

2. The internal water outlet cutter bar according to claim 1, characterized in that: A water storage chamber (5) is provided at the connection between the main waterway (3) and the branch waterway (4), and the diameter of the water storage chamber (5) is much larger than the diameter of the branch waterway (4).

3. The internal water outlet cutter bar according to claim 2, characterized in that: The handle (1) is provided with an adjustment threaded hole (12), and an adjustment screw (13) is provided in the adjustment threaded hole (12). The adjustment threaded hole (12) is connected to the water storage chamber (5), and the end of the adjustment screw (13) is inserted into the water storage chamber (5).

4. The internal water outlet cutter bar according to claim 3, characterized in that: The second branch (42) is located at the bend of the first branch (41) at both ends.

5. The internal water outlet cutter bar according to claim 3, characterized in that: The cutter head (2) is provided with a first water outlet groove (25), and the end of the branch water channel (4) is connected to the first water outlet groove (25). A first water outlet pin (6) is installed in the first water outlet groove (25). The first water outlet pin (6) is provided with a first water outlet (61) connected to the branch water channel (4). The water outlet direction of the first water outlet (61) corresponds to the blade tip installed on the blade groove (21).

6. The internal water outlet cutter bar according to claim 5, characterized in that: The cutter head (2) is provided with a second water outlet groove (26), and a second water outlet pin (7) is provided in the second water outlet groove (26). The first water outlet pin (6) and the second water outlet pin (7) are spaced apart. The second water outlet pin (7) is provided with a second water outlet (71). The cutter head (2) is provided with a connecting branch (22). The second water outlet (71) is connected to the water storage chamber (5) through the connecting branch (22). The central axis of the first water outlet (61) and the central axis of the second water outlet (71) are set at an angle and respectively scour the left and right sides of the blade.

7. The internal water outlet cutter bar according to claim 6, characterized in that: The cutter head (2) is provided with a branch channel adjustment hole (23), and a branch channel screw (24) is fitted inside the branch channel adjustment hole (23). The branch channel adjustment hole (23) is connected to the branch channel (4), and the end of the branch channel screw (24) is inserted into the branch channel (4).

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