Self-liquid-absorbing knife handle and processing machine tool

Abstract

The utility model relates to a self-liquid-sucking knife handle and a machining machine tool, the self-liquid-sucking knife handle comprises a body and a self-liquid-sucking part which are axially connected, the self-liquid-sucking part is provided with a liquid cavity and a self-liquid-sucking channel which is communicated with the liquid cavity and located on the outer side of the liquid cavity, and the self-liquid-sucking channel comprises a stopping face and a first drainage face which are oppositely arranged; and the first drainage surface and the stop surface are distributed at an acute angle. According to the technical scheme, the technical problem that the roughness of a machined product is large due to the fact that the cooling liquid supply amount of a center spindle of a traditional machining machine tool to a grinding wheel is limited is effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of grinding equipment, and particularly to a self-suction liquid tool holder and a processing machine tool. Background Art

[0002] During the grinding process, a large amount of cutting heat is generated at the grinding wheel, seriously affecting the grinding effect of the product and the service life of the grinding wheel. Therefore, it is necessary to cool the grinding wheel during the grinding process.

[0003] In the related art, generally, coolant is introduced into the center of the grinding wheel through the tool holder by the central spindle. However, since the size of the central hole of the central spindle is limited by the tool size, the water output is limited, resulting in a large roughness of the processed product and unable to meet the production requirements. Summary of the Utility Model

[0004] This application provides a self-suction liquid tool holder and a processing machine tool to solve the technical problem that the coolant supply amount of the central spindle of the traditional processing machine tool to the grinding wheel is limited, resulting in a large roughness of the processed product.

[0005] To this end, in a first aspect, an embodiment of this application provides a self-suction liquid tool holder, including an axially connected body and a self-suction liquid member. The self-suction liquid member is provided with a liquid cavity and a self-suction liquid channel that communicates with the liquid cavity and is located outside the liquid cavity. The self-suction liquid channel includes a relatively arranged stop surface and a first drainage surface, and the first drainage surface is distributed at an acute angle to the stop surface.

[0006] In a possible implementation manner, the range of the acute angle is 20° to 55°.

[0007] In a possible implementation manner, the stop surface is a plane, the first drainage surface is an arc surface, and the acute angle is the included angle between the tangent at the minimum distance between the first drainage surface and the stop surface and the stop surface.

[0008] In a possible implementation manner, the self-suction liquid channel further includes a second drainage surface, and the second drainage surface is arranged between the first drainage surface and the liquid cavity and is parallel to the stop surface.

[0009] In a possible implementation manner, in the circumferential direction of the self-suction liquid member, the ratio of the opening width between the second drainage surface and the stop surface to the diameter of the self-suction liquid tool holder is (1 to 10):64.

[0010] In a possible implementation manner, the opening width (D) between the second drainage surface and the stop surface is 0.5 mm - 5 mm; and / or,

[0011] In the axial direction of the self-suction liquid member, the opening depth (H) of the self-suction liquid channel is 10 mm to 20 mm.

[0012] In a possible implementation, the liquid cavity includes a first inner arc surface and a second inner arc surface that are smoothly connected. The side of the first inner arc surface away from the second inner arc surface is smoothly connected to the second drainage surface, and the side of the second inner arc surface away from the first inner arc surface is smoothly connected to the stop surface of the adjacent self-suction liquid channel. The first inner arc surface and the second inner arc surface enclose at least part of the liquid cavity.

[0013] In a possible implementation, the ratio of the chord length of the first inner arc surface to the chord length of the second inner arc surface is (7:20):1.

[0014] In a possible implementation, the main body and the self-suction liquid member are integrally formed; and / or,

[0015] There are two or more self-suction liquid channels, and the two or more self-suction liquid channels are spaced apart in the circumferential direction of the liquid cavity and keep the self-suction liquid member in a dynamic balance state during rotation.

[0016] In a second aspect, the present application further provides a processing machine tool, including a central spindle, a tool, and the self-suction liquid tool holder as described above. The main body of the self-suction liquid tool holder is connected to the central spindle, and the self-suction liquid member of the self-suction liquid tool holder is connected to the tool.

[0017] According to the self-suction liquid tool holder and the processing machine tool provided by the embodiments of the present application, the self-suction liquid tool holder includes a main body and a self-suction liquid member that are axially connected. The self-suction liquid member is provided with a liquid cavity and a self-suction liquid channel that communicates with the liquid cavity and is located outside the liquid cavity. The self-suction liquid channel includes a stop surface and a first drainage surface that are oppositely arranged, and the first drainage surface and the stop surface are distributed at an acute angle. In the technical solution of the present application, a main body and a self-suction liquid member are provided on the tool holder, so as to introduce external coolant into the tool holder through the self-suction liquid member and send it to the tool connected to the front end of the tool holder through the tool holder, thereby increasing the coolant supply amount at the tool and improving the problem that the coolant supply amount at the tool is small, resulting in a large roughness of the product processed by the tool, and improving the product processing quality and yield. Compared with the traditional liquid delivery mode of a numerical control machine tool that needs to pass coolant through the central hole of the central spindle and then through the tool holder to the tool, the self-suction liquid tool holder provided by the embodiments of the present application adds a new way for external coolant to enter the tool, and can make the coolant at the periphery of the self-suction liquid member enter the liquid cavity under the action of the self-suction force of the rotating self-suction liquid tool holder to achieve the purpose of supplying the tool, greatly increasing the coolant amount at the tool, making the roughness of the processed product small, the surface smooth, and meeting the production requirements. Description of the Drawings

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the accompanying drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings without creative efforts. One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the accompanying drawings are represented as similar elements. Unless otherwise stated, the drawings in the accompanying drawings do not constitute a scale limitation.

[0019] Figure 1 Schematic perspective view of the self-priming liquid tool shank provided for the embodiment of this application;

[0020] Figure 2 and Figure 3 Top view of the self-priming liquid tool shank provided for the embodiment of this application;

[0021] Figure 4 Schematic partial perspective view of the machining tool provided for the embodiment of this application;

[0022] Figure 5 is Figure 4 Another perspective view of

[0023] Explanation of reference numerals in the drawings:

[0024] 100, body; 110, socket; 120, limiting boss; 130, annular groove;

[0025] 200, self-priming liquid part; 201, liquid cavity; 202, self-priming liquid channel; 203, connecting hole; 210, stop surface; 220, first drainage surface; 230, second drainage surface; 240, first inner arc surface; 250, second inner arc surface; 260, first outer arc surface;

[0026] A, acute angle; D, opening width; H, opening depth;

[0027] 10, cutting tool; 20, substrate. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part rather than all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the applicability of other processes and / or the use of other materials.

[0030] For ease of description, spatially relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms such as "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "upper", "front", "rear", etc. The intention of these spatially relative relationship terms is to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or motion state change, then these directional indications will change accordingly. For example, an element described as "below" or "beneath" another element or feature will then be oriented as "above" or "upper" another element or feature. Therefore, the exemplary term "below" can include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatially relative relationship descriptors used in the text are interpreted accordingly.

[0031] See Figures 1 to 5 , the present application provides a self-priming liquid handle, including an axially connected body 100 and a self-priming liquid member 200. The self-priming liquid member 200 is provided with a liquid cavity 201 and a self-priming liquid channel 202 that communicates with the liquid cavity 201 and is located outside the liquid cavity 201. The self-priming liquid channel 202 includes a stop surface 210 and a first drainage surface 220 that are oppositely arranged, and the first drainage surface 220 is distributed at an acute angle A with respect to the stop surface 210.

[0032] In this embodiment, a body 100 and a self-suction liquid member 200 are provided on the tool shank, so that the external coolant can be introduced into the tool shank through the self-suction liquid member 200 and sent to the tool 10 connected to the front end of the tool shank through the tool shank, thereby increasing the coolant supply at the tool 10 and improving the problem of large roughness of the product processed by the tool 10 due to insufficient coolant supply at the tool 10, and improving the product processing quality and yield. Compared with the traditional liquid delivery mode of the CNC machine tool, which needs to pass the coolant through the central hole of the central spindle and then through the tool shank to the tool 10, the self-suction liquid tool shank provided by the embodiment of the present application adds a new way for the external coolant to enter the tool 10. The coolant around the self-suction liquid member 200 can enter the liquid cavity 201 under the action of the self-suction force of the rotating self-suction liquid tool shank to achieve the purpose of supplying the tool 10, greatly increasing the coolant volume at the tool 10, making the roughness of the processed product small, the surface smooth, and meeting the production requirements.

[0033] Specifically, the self-suction liquid tool shank is configured as a combined component at least including the body 100 and the self-suction liquid member 200. The body 100 can be a cylindrical joint, which is used to connect the central spindle of the processing machine tool; a liquid passing hole is provided in the center of the body 100, and the liquid passing hole is communicated with the central hole of the central spindle for transporting the coolant. The self-suction liquid member 200 can be an annular structure with a liquid cavity 201 provided in the center. A self-suction liquid channel 202 communicating with the liquid cavity 201 is provided on the peripheral side of the annular structure, so as to communicate the space around the self-suction liquid member 200 and the liquid cavity 201, which is beneficial to the coolant entering from the side of the self-suction liquid member 200 and increasing the coolant entry path; moreover, the self-suction liquid channel 202 is configured as a composite shape channel at least including a first drainage surface 220 and a stop surface 210. The stop surface 210 is used to block the coolant from continuing to rotate around the outer wall surface of the self-suction liquid member 200 and cooperate with the opposite first drainage surface 220 to introduce the coolant from the self-suction liquid channel 202 into the liquid cavity 201 of the self-suction liquid tool shank; the first drainage surface 220 is used to drain the coolant rotating around the outer wall surface of the self-suction liquid member 200 into the self-suction liquid channel 202. At the same time, the first drainage surface 220 and the stop surface 210 are opposite and arranged at an acute angle A. In this way, it is beneficial for the self-suction liquid member 200 to use the suction force generated by rotation to suck the coolant in the peripheral space thereof into the liquid cavity 201, increasing the coolant volume self-sucked into the liquid cavity 201 per unit time, and being able to provide a large amount of continuous coolant for the tool 10 connected to the front end of the self-suction liquid member 200 in a short time, making the workpiece to be processed on the tool 10 side in a rich coolant environment, improving the grinding processing effect, and reducing the surface roughness of the workpiece to be processed. In addition, a through hole communicating with the liquid passing hole of the body 100 is also provided in the center of the self-suction liquid member 200, and the through hole can lead the coolant in the central hole of the central spindle and the liquid passing hole of the spindle to the tool 10 side to supply coolant to the tool 10.

[0034] As described above, the self-priming liquid tool holder provided in this example provides at least two supply paths for external coolant: One is that the coolant passes through the central hole of the central spindle, the liquid passage hole of the body 100, and the through hole of the self-priming liquid member 200 and then converges into the liquid cavity 201, and then supplies coolant to the tool 10; The other is that the coolant is self-primed into the liquid cavity 201 from the periphery of the self-priming liquid member 200 by rotation and supplies coolant to the tool 10. It can be seen that this self-priming liquid tool holder has multiple coolant introduction paths, a large amount of introduced coolant, and a large central liquid discharge amount on the tool 10 side, resulting in a low surface roughness and a smooth surface of the processed product, meeting the processing requirements; Moreover, the structure of this self-priming liquid tool holder is simple, convenient for processing, and has a low cost.

[0035] In one example, the body 100 includes a plug connector 110, a limit boss 120, and an annular groove 130 that are connected in sequence. The plug connector 110, the limit boss 120, and the annular groove 130 are coaxially arranged. The limit boss 120 can be a short cylindrical structure, and its radial dimension is larger than that of the plug connector 110 to achieve position limitation of the central spindle in the radial direction of the tool holder. The plug connector 110 is used to be inserted into the plug sleeve of the central spindle. It can be a long cylindrical structure, and its axial dimension is larger than that of the limit boss 120 to increase the axial contact area between the plug connector 110 and the central spindle and improve the connection tightness between the plug connector 110 and the central spindle. The annular groove 130 can be an annular inner groove for connecting the self-priming liquid member 200; The radial dimension of the self-priming liquid member 200 is comparable to that of the limit boss 120 and slightly larger than that of the annular groove 130.

[0036] In a possible implementation manner, the range of the acute angle A is 20° to 55°. With such a setting, the best drainage angle can be formed between the stop surface 210 and the first drainage surface 220, which can avoid too small an angle between the two, resulting in too small a drainage space for the self-priming liquid channel 202 and affecting the overall coolant intake; It can also avoid too large an angle between the two, resulting in the coolant entering the liquid cavity 201 being easily ejected, affecting the stability of the internal coolant and interfering with the incoming coolant, making the opening of the self-priming liquid channel 202 at an appropriate opening degree, ensuring the coolant intake while improving the stability of the introduced coolant and enhancing the self-priming liquid supply effect. For example but not limited to, the acute angle A is 31°.

[0037] In a possible implementation, the stop surface 210 is a flat surface, the first drainage surface 220 is an arc surface, and the acute angle A is the angle between the tangent line at the minimum distance between the first drainage surface 220 and the stop surface 210 and the stop surface 210. With such a setting, configuring the stop surface 210 as a flat surface can prevent the curved surface design from swirling and discharging some of the coolant entering the self-priming liquid channel 202, which is beneficial to the entry and accumulation of the coolant at the liquid inlet of the self-priming liquid channel 202. At the same time, configuring the first drainage surface 220 as an arc surface protruding towards the stop surface 210 enables the coolant flowing along the peripheral wall surface of the self-priming member 200 to smoothly enter the self-priming liquid channel 202 through this arc surface, reducing the difficulty of coolant entry and increasing the amount of coolant collection. Moreover, configuring the angle between the tangent line at the minimum distance between the two and the stop surface 210 as the acute angle A can avoid the volume of the self-priming liquid channel 202 being too small and the suction amount of the coolant being too small due to the too small curvature of the first drainage surface 220, or avoid the curvature of the first drainage surface 220 being too large and affecting its drainage effect on the coolant. By configuring the stop surface 210 and the first drainage surface 220 within an appropriate inclination angle range, while increasing the volume of the self-priming liquid channel 202, the drainage effect of the self-priming liquid channel 202 on the coolant is improved, thereby enhancing the self-priming effect of the self-priming member 200.

[0038] In a possible implementation, in the direction from the self-priming liquid channel 202 to the liquid chamber 201, the distance between the stop surface 210 and the first drainage surface 220 becomes smaller and smaller. With such a setting, the self-priming liquid channel 202 can be gradually narrowed into a trumpet-shaped structure from its liquid inlet to its liquid outlet direction, further enhancing the collection effect of the self-priming liquid channel 202 on the coolant and improving the self-priming effect of the self-priming member 200 on the coolant.

[0039] In a possible implementation, the self-priming liquid channel 202 further includes a second drainage surface 230, and the second drainage surface 230 is disposed between the first drainage surface 220 and the liquid chamber 201 and is parallel to the stop surface 210.

[0040] In this embodiment, the specific configuration of the self-priming liquid channel 202 is further optimized. Specifically, the self-priming liquid channel 202 is set as a composite-shaped channel including at least a stop surface 210, a first drainage surface 220, and a second drainage surface 230. The second drainage surface 230 can be in a planar shape and is arranged parallel and spaced apart from the stop surface 210 to form a second channel with a fixed size at the liquid outlet of the self-priming liquid channel 202, improving the self-priming stability of the self-priming liquid channel 202. At the same time, a first channel with a gradually changing size is formed at the liquid inlet of the self-priming liquid channel 202 through the first drainage surface 220 and the stop surface 210, improving the convergence and drainage of the coolant. In this example, the second drainage surface 230 is used to avoid forming a sharp-corner structure at the liquid outlet of the self-priming liquid channel 202, thus avoiding the situation where the sharp-corner structure is easily washed / impacted and broken by the self-priming liquid, resulting in a short service life of the self-priming liquid component 200, and improving the mechanical properties of the self-priming liquid component 200. At the same time, by setting the second channel, it is convenient for the coolant to enter and exit, improving the coolant supply volume and supply efficiency; and it can effectively reduce the generation of eddy currents and noise, improving the use performance of the self-priming liquid tool shank.

[0041] In one example, in the radial direction of the self-priming liquid tool shank, the length of the second drainage surface 230 is 1.5 mm to 5 mm. With such a setting, it can avoid the poor water-accumulating and guiding effect caused by too small a radial length of the second channel, and can also avoid the low flow rate of the coolant entering the liquid cavity 201 and the poor self-priming effect caused by too large a radial length of the second channel, making the length of the second drainage surface 230 enclosing the second channel within a suitable range, ensuring the water-accumulating and guiding effect while improving the flow stability of the internal coolant. For example but not limited to, the length of the second drainage surface 230 is 1.9 mm.

[0042] In a possible implementation manner, the orthographic projection of the second drainage surface 230 on the stop surface 210 is received in the stop surface 210. With such a setting, the second drainage surface 230 can be made to face the stop surface 210 directly, ensuring that the inner wall surface of the second channel is all planar and improving the self-priming effect of the coolant. And the stop surface 210 can be extended as far as possible outwards. For example, when at the maximum threshold, it can be extended outwards to the periphery of the main body 100, making the stop surface 210 present the largest stop surface 210 area, which is beneficial to guiding the rotating coolant into the liquid cavity 201 and further improving the water-blocking and self-priming effect.

[0043] It should be explained that the "receiving" mentioned in this example means that the orthographic projection of the second drainage surface 230 is completely covered by the orthographic projection of the stop surface 210. In the flow direction of the self-priming liquid channel 202, the second drainage surface 230 does not extend beyond the corresponding stop surface 210, and the second drainage surface 230 only corresponds to a part of the stop surface 210 opposite to it.

[0044] In a possible implementation, in the circumferential direction of the self-priming liquid member 200, the ratio of the opening width D between the second drainage surface 230 and the stop surface 210 to the diameter of the self-priming liquid tool shank is (1 to 10):64. In this example, the parameter ratio between the second drainage surface 230 and the stop surface 210 is defined, which can avoid ineffective water accumulation due to too large an opening width D and can also avoid affecting the coolant inflow due to too small an opening width D, so that the self-priming liquid channel 202 between the second drainage surface 230 and the stop surface 210 is maintained at the optimal opening width D size, improving both the coolant inflow and the water accumulation effect in the liquid cavity 201. For example but not limited to, when the diameter of the self-priming liquid tool shank is 32 mm, the opening width between the second drainage surface 230 and the stop surface 210 is 0.5 mm to 5 mm. For example, the opening width D of the self-priming liquid channel 202 between the second drainage surface 230 and the stop surface 210 is 3 mm.

[0045] In a possible implementation, in the axial direction of the self-priming liquid member 200, the opening depth H of the self-priming liquid channel 202 is 10 mm to 20 mm. At the same time, the parameter of the opening depth H of the self-priming liquid channel 202 is defined, which can avoid affecting the coolant flow due to too small an opening depth H and can also avoid increasing the tool 10 yaw due to too large an opening depth H, so that the self-priming liquid channel 202 is maintained at the optimal opening depth H size, improving both the coolant inflow and reducing the tool 10 yaw amplitude, and improving the grinding effect of the tool 10 on the product. For example but not limited to, the opening depth H of the self-priming liquid channel 202 is 15 mm.

[0046] In a possible implementation, the liquid cavity 201 includes a first inner arc surface 240 and a second inner arc surface 250 that are smoothly connected. One side of the first inner arc surface 240 away from the second inner arc surface 250 is smoothly connected to the second drainage surface 230, and one side of the second inner arc surface 250 away from the first inner arc surface 240 is smoothly connected to the stop surface 210 of the adjacent self-priming liquid channel 202. The first inner arc surface 240 and the second inner arc surface 250 enclose at least part of the liquid cavity 201.

[0047] In this embodiment, the specific configuration of the self-priming liquid member 200 is further optimized. Specifically, the self-priming liquid member 200 is configured as a composite member including at least a stop surface 210, a second drainage surface 230, a first inner arc surface 240, and a second inner arc surface 250. The first inner arc surface 240 can be a minor arc cylindrical surface, which forms a part of the inner wall surface of the liquid cavity 201; the second inner arc surface 250 can be a minor arc cylindrical surface, which forms a part of the inner wall surface of the liquid cavity 201. The coolant entering from the self-priming liquid channel 202 is sequentially guided in the liquid cavity 201 through the second inner arc surface 250 and the first inner arc surface 240, and finally flows out from the liquid outlet hole side of the tool 10. The first inner arc surface 240 and the second inner arc surface 250 can be tangentially connected to reduce the flow resistance of the coolant in the liquid cavity 201. In this example, by providing two arc surface structures on the inner wall surface of the liquid cavity 201, the smooth movement of the self-priming coolant in the liquid cavity 201 is improved, the movement resistance is reduced, and the self-priming effect is greatly improved.

[0048] In a possible implementation manner, the ratio of the chord length of the first inner arc surface 240 to the chord length of the second inner arc surface 250 is (7 - 20):1. In this example, the arc surface area of the first inner arc surface 240 is set to be larger than the arc surface area of the second inner arc surface 250, that is to say, the curvature of the first inner arc surface 240 is greater than the curvature of the second inner arc surface 250. In this way, the coolant entering from the self-priming liquid channel 202 can be quickly guided through the small-area second inner arc surface 250, improving the smoothness and stability of the movement of the self-priming coolant in the liquid cavity 201; and the large-area first inner arc surface 240 can reduce the splashing of the coolant from another self-priming liquid channel 202, thereby interfering with the coolant introduced from this self-priming liquid channel 202, and further improving the movement stability of the coolant in the liquid cavity 201.

[0049] In a specific example, the chord length of the first inner arc surface 240 is 25 mm - 30 mm, and the chord length of the second inner arc surface 250 is 1.8 mm - 3 mm. By limiting the specific chord length parameters of the first inner arc surface 240 and the second inner arc surface 250, it is avoided that the chord length of the first inner arc surface 240 is too small and the chord length of the second inner arc surface 250 is too large, resulting in excessive diversion and affecting the flow rate of the coolant in the liquid cavity 201, thereby improving the self-priming effect of the self-priming liquid member 200; or, it is avoided that the chord length of the first inner arc surface 240 is too large and the chord length of the second inner arc surface 250 is too small, resulting in the coolant at the tail being easily ejected from another self-priming liquid channel 202 and interfering with the coolant entering from there. For example but not limited to, the chord length of the first inner arc surface 240 is 29.17 mm, the curvature of the first inner arc surface 240 is 1 / 11; the chord length of the second inner arc surface 250 is 2.39 mm, and the curvature of the second inner arc surface 250 is 1 / 15.

[0050] As Figures 1 to 3As shown, in a possible implementation, the self - suction liquid member 200 further includes a first outer arc surface 260 that is smoothly connected to the first drainage surface 220. One side of the first outer arc surface 260 away from the first drainage surface 220 is smoothly connected to the stop surface 210, and the other side of the stop surface 210 is connected to the liquid cavity 201. The side of the first drainage surface 220 away from the first outer arc surface 260 is smoothly connected to the second drainage surface 230, and the other side of the second drainage surface 230 is connected to the liquid cavity 201; in the radial direction of the body 100, the first outer arc surface 260 coincides with the outer circular surface of the body 100, and the first drainage surface 220 is received within the outer circular surface of the body 100.

[0051] In this embodiment, the specific configuration of the self - suction liquid member 200 is further optimized. Specifically, the self - suction liquid member 200 is configured to be a composite member including at least a stop surface 210, a first drainage surface 220, a second drainage surface 230, and a first outer arc surface 260. The first outer arc surface 260 can be a minor - arc cylindrical surface, which forms part of the outer wall surface of the self - suction liquid member 200; the first drainage surface 220 can be a minor - arc cylindrical surface, which forms another part of the outer wall surface of the self - suction liquid member 200. During the rotation of the self - suction liquid tool shank, the coolant around the self - suction liquid member 200 sequentially enters the liquid cavity 201 along the first outer arc surface 260 and the first drainage surface 220 from the self - suction liquid channel 202, realizing the self - suction of the coolant. In the axial direction of the self - suction liquid tool shank, the first outer arc surface 260 coincides with the outer circular surface of the body 100, and the first drainage surface 220 gradually rotates inwards towards the center of the outer circular surface of the body 100. In this way, it is convenient to introduce the coolant at the periphery of the self - suction liquid member 200 into the liquid cavity 201, reducing the flow resistance of the coolant on the outer wall surface of the self - suction liquid member 200. In this example, by setting a two - segment arc surface structure on the outer wall surface of the self - suction liquid member 200, the smoothness of the movement of the coolant outside the self - suction liquid member 200 is improved, the movement resistance is reduced, and the self - suction effect is greatly improved.

[0052] In a possible implementation, the chord length of the first drainage surface 220 is 25 mm to 30 mm. With such a setting, the first drainage surface 220 can be completely received within the circular end surface of the body 100, realizing the drainage of the coolant at the outer periphery of the self - suction liquid member 200 and enhancing the self - suction effect. Moreover, by limiting the specific chord - length parameter of the first drainage surface 220, it can avoid too little coolant being drained due to too short a chord length of the first drainage surface 220, increasing the amount of drained coolant; and it can also avoid too small a flow rate of the drained coolant due to too long a chord length of the first drainage surface 220, resulting in poor drainage effect. For example but not limited to, the chord length of the first drainage surface 220 is 22.52 mm.

[0053] In a possible implementation, the body 100 is connected to a central main shaft (not shown in the figure), and one side of the self-priming liquid part 200 away from the body 100 is connected to the tool 10. With this arrangement, the coolant drawn in by self-priming can be directly introduced into the tool 10, reducing the axial movement loss of the coolant, improving the liquid discharge efficiency and liquid discharge volume of the coolant, and enhancing the grinding effect of the tool 10 on the product. At the same time, it can also reduce the accumulation of coolant at the central main shaft, reduce the corrosion of the central main shaft by the coolant, improve the accuracy of the central main shaft, and extend the service life of the central main shaft.

[0054] In an example, as Figure 1 shown, a connection hole 203 is provided on the self-priming liquid part 200, and the connection hole 203 extends along the axial direction of the self-priming liquid tool handle. The tool 10 is connected to the connection hole 203 of the self-priming liquid part 200 through fasteners such as screws / bolts. For example but not limited to, at least four connection holes 203 are provided on one self-priming liquid part 200 to increase the connection tightness between the self-priming liquid tool handle and the tool 10 in terms of quantity.

[0055] In a possible implementation, the body 100 and the self-priming liquid part 200 are integrally formed. With this arrangement, it can be ensured that there is no deviation during the processing and installation of the self-priming liquid tool handle, guarantee the dynamic balance and concentricity of the self-priming liquid tool handle, improve the grinding effect of the tool 10 connected to the self-priming liquid tool handle, and enhance the mechanical performance of the processing machine tool.

[0056] In a possible implementation, there are two or more self-priming liquid channels 202. The two or more self-priming liquid channels 202 are spaced apart circumferentially in the liquid cavity 201 and keep the self-priming liquid part 200 in a dynamic balance state during rotation.

[0057] In this embodiment, by setting two or more self-priming liquid channels 202 arranged symmetrically in terms of force, the inflow path of the coolant on the side of the self-priming liquid part 200 is increased, the self-priming liquid volume of the self-priming liquid tool handle is improved, the coolant supply to the side of the tool 10 is increased, and the surface roughness of the product processed by the tool 10 is low and the surface is smooth, meeting the production requirements. It should be noted that the "arranged symmetrically in terms of force" mentioned in this example means that two or more self-priming liquid channels 202 are symmetrically arranged along the circumferential direction of the self-priming liquid tool handle to ensure that the coolant in each self-priming liquid channel 202 during the rotation receives the same torque force, thereby ensuring the structural stability and self-priming reliability of the self-priming liquid part 200.

[0058] For example, two self-priming liquid channels 202 may be provided. At this time, two approximately crescent-shaped self-priming liquid flaps are provided on the self-priming liquid member 200. The self-priming liquid flaps are symmetrically and spaced apart on the body 100. The first drainage surface 220 and the second drainage surface 230 of one self-priming liquid flap are opposite and spaced apart from the stop surface 210 of the other self-priming liquid flap to enclose the self-priming liquid channel 202. The two opposite self-priming liquid channels 202 are arranged in mirror symmetry. In this way, each self-priming liquid flap needs to receive the same and uniform torque force during the rotation process, so as to ensure that the coolant distributed around the self-priming liquid member 200 can receive a uniform rotational force, and then use the principles of rotation and convection to form a vortex of the liquid at the outer periphery of the self-priming liquid member 200, which is self-primed into the liquid cavity 201 of the tool holder and flows out from the liquid outlet hole of the tool 10, realizing the supply of coolant to the tool 10.

[0059] In addition, as Figure 4 and Figure 5 shown, the present application also provides a machining tool, including a central spindle, a tool 10 and the self-priming liquid tool holder as described above. The body 100 of the self-priming liquid tool holder is connected to the central spindle, and the self-priming liquid member 200 of the self-priming liquid tool holder is connected to the tool 10. The specific structure of the self-priming liquid tool holder refers to the above embodiments. Since this machining tool adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0060] In this embodiment, the machining tool may be a CNC numerical control machine tool. The central spindle may be a CNC machine tool spindle. The tool 10 may be a grinding wheel. The self-priming liquid tool holder may be an HSK tool holder. The tool 10 may be connected to the self-priming liquid tool holder through a base body 20. The base body 20 may be used to grind the contour to ensure the concentricity of the grinding wheel. The HSK tool holder may be connected to the CNC machine tool spindle. When the machining program is started and the CNC machine tool spindle rotates, the coolant can form a vortex and be self-primed into the liquid cavity 201 of the HSK tool holder by using the principles of rotation and convection. And, without pausing the CNC machine tool spindle, the sucked coolant can be discharged from the outflow center of the tool 10, playing the role of internal cooling the tool 10 and discharging chips. It effectively avoids the occurrence of tool marks caused by the extrusion of sand grains and glass powder at the bottom of the rotating tool 10 during the machining process, and improves the appearance yield of the product.

[0061] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0062] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer or section from another. Unless the context clearly dictates otherwise, terms such as "first", "second" and other numerical terms when used herein do not imply an order or sequence. Thus, the first element, component, region, layer or section discussed below may be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0063] The foregoing are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. 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 application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A self-priming liquid handle, characterized in that: The invention comprises an axially connected body (100) and a self-sucking liquid component (200), wherein the self-sucking liquid component is provided with a liquid cavity (201) and a self-sucking liquid channel (202) which is in communication with the liquid cavity (201) and is located outside the liquid cavity (201), wherein the self-sucking liquid channel (202) comprises a stop surface (210) and a first drainage surface (220) which are arranged opposite to each other, and the first drainage surface (220) and the stop surface (210) are distributed at an acute angle (A).

2. The self-priming liquid handle according to claim 1, characterized in that: The acute angle (A) ranges from 20° to 55°.

3. The self-priming liquid handle according to claim 2, characterized in that: The stop surface (210) is a plane, the first drainage surface (220) is an arc surface, and the acute angle (A) is the angle between the tangent line at the minimum distance between the first drainage surface (220) and the stop surface (210) and the stop surface (210).

4. The self-priming liquid handle according to claim 1, characterized in that: The self-priming liquid channel (202) further comprises a second drainage surface (230), wherein the second drainage surface (230) is arranged between the first drainage surface (220) and the liquid chamber (201), and is parallel to the stop surface (210).

5. The self-priming liquid handle according to claim 4, characterized in that: In the circumferential direction of the self-priming liquid part, the ratio of the opening width (D) between the second drainage surface (230) and the stop surface (210) to the diameter of the self-priming liquid handle is (1-10):

64.

6. The self-priming liquid handle according to claim 5, characterized in that: The opening width (D) between the second guide surface (230) and the stop surface (210) is 0.5 mm-5 mm; and / or, In the axial direction of the self-liquid-absorbing member, the opening depth (H) of the self-liquid-absorbing channel (202) is 10 mm to 20 mm.

7. The self-priming liquid handle according to claim 4, characterized in that: The liquid cavity (201) comprises a first inner curved surface (240) and a second inner curved surface (250) which are smoothly connected, wherein a side of the first inner curved surface (240) away from the second inner curved surface (250) is smoothly connected to the second drainage surface (230), and a side of the second inner curved surface (250) away from the first inner curved surface (240) is smoothly connected to a stop surface (210) of an adjacent self-priming liquid channel, and the first inner curved surface (240) and the second inner curved surface (250) enclose at least a portion of the liquid cavity (201).

8. The self-priming liquid handle according to claim 7, characterized in that: The ratio of the chord length of the first inner curved surface (240) to the chord length of the second inner curved surface is (7-20):

1.

9. The self-priming liquid handle according to claim 1, characterized in that: The main body (100) and the self-liquid absorbing member (200) are integrally formed; and / or, Two or more self-sucking liquid channels (202) are provided, and the two or more self-sucking liquid channels (202) are distributed at intervals in the circumference of the liquid chamber (201), and enable the self-sucking liquid member (200) to maintain a dynamic balance state during rotation.

10. A processing machine tool, characterized in that: It comprises a central spindle, a tool (10) and a self-priming tool handle according to any one of claims 1 to 9, wherein a body (100) of the self-priming tool handle is connected to the central spindle, and a self-priming part (200) of the self-priming tool handle is connected to the tool (10).

Images