CN215902742U - Tool, tool assembly, machining device, and machine tool - Google Patents

Abstract

The utility model discloses a cutter, a cutter assembly, a machining device and a machine tool, wherein the cutter comprises a connecting section and a working section which are integrally formed, the outer diameter of the connecting section is larger than or equal to that of the working section, a plurality of grooves which axially extend and are radially recessed are arranged on the periphery of the connecting section, the grooves extend from the end surface of the connecting section to the rear end part of the working section, and the grooves are used for transmitting cooling media and/or lubricating media. The axial grooves are machined in the periphery of the cutter, so that the cooling efficiency is improved, the machining difficulty of a cooling channel is reduced, the transmission of a cooling medium and/or a lubricating medium can be conveniently machined, and the connection precision of the cutter, the cutter handle and other structures can be ensured.

Description

Tool, tool assembly, machining device, and machine tool

Technical Field

The utility model relates to the field of machine tool machining, in particular to a cutter, a cutter assembly, a machining device and a machine tool.

Background

In the technical field of machining, on the basis of the principle of expansion with heat and contraction with cold, a knife handle and a knife tool can be connected in an interference fit mode through expansion with heat and contraction with cold. After the tool is connected with the tool shank, cooling needs to be performed through cooling liquid so that the tool is firmly connected with the tool shank. At present, in order to cool the cutter and the cutter handle, a cooling liquid transmission through hole is usually formed in the cutter handle, and a central hole is formed in the cutter, so that cooling liquid/trace lubricating liquid can be sprayed to a machining area from a cutter head of the cutter, the cutter or the cutter handle is cooled, and the cutter head or a workpiece is lubricated in a trace manner. However, at present, the center through hole is difficult to be formed on the cutter, high precision is needed, and meanwhile, the transmission efficiency of cooling liquid and micro-lubricating liquid is low, so that the micro-lubricating and cooling effects are poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome at least one of the defects in the prior art, the utility model aims to provide a cutter, a cutter assembly, a machining device and a machine tool, which solve the problems that a central through hole is difficult to open on the cutter, the through hole is large in size, high precision is required, and the micro-lubricating and cooling effects are poor.

The purpose of the application is realized by adopting the following technical scheme:

the embodiment of the application provides a cutter, including integrated into one piece's linkage segment and working segment, the external diameter of linkage segment is more than or equal to the external diameter of working segment, the linkage segment periphery is provided with a plurality of recesses of radial sunken, the recess is followed the terminal surface of linkage segment extends to the back tip of working segment, the recess is used for transmitting coolant and/or lubricating medium.

Optionally, the groove extends linearly in the axial direction.

Optionally, the groove extends helically around the shaft.

Optionally, the connecting section is provided with a transition section arranged between the connecting section and the working section, and the groove extends from the end face of the connecting section to the rear end part of the transition section.

Optionally, the transition section outer diameter is equal to the working section outer diameter.

Optionally, the outer diameter of the transition section is larger than that of the working section and smaller than that of the connecting section, and the outer circumferential surface of the transition section is a conical surface or a cylindrical surface.

Optionally, a plurality of the grooves are uniformly distributed on the periphery of the connecting section.

Optionally, the shape of the groove in the radial cross section is any one of a V shape, a U shape, and a circular arc shape.

The embodiment of the application further provides a cutter assembly, including cutter clamping structure and any embodiment in this application the cutter, cutter clamping hole has been seted up to cutter clamping structure, cutter fixed mounting in the cutter clamping hole.

Optionally, the tool is heat mounted in the tool holding hole.

Optionally, the tool holding structure is provided with an inner cooling channel along the axial direction.

The embodiment of the application provides a machining device, including handle of a knife, in the arbitrary embodiment of this application cutter unit spare, cutter unit spare with the handle of a knife is connected, the handle of a knife along the axial seted up with interior cold through-hole of cutter centre gripping hole intercommunication.

The embodiment of the application provides a machine tool, including the lathe body, set up the main shaft on the lathe body to and the processingequipment in the embodiment of the application, processingequipment with the main shaft is connected.

The utility model provides a cutter, a cutter assembly, a machining device and a machine tool. The axial grooves are processed on the periphery of the cutter, so that the cooling efficiency of the cutter and the structure for clamping the cutter is improved on the basis of ensuring the rigidity and the strength of the whole structure of the cutter; compared with the mode of processing a central hole on the cutter, the processing difficulty of the cooling channel is reduced, the transmission access processing of the cooling medium and/or the lubricating medium is more convenient to realize, and the connection precision of the cutter and the cutter handle and other structures can be ensured.

Drawings

FIG. 1 is an axial cross-sectional view of a tool of the present application, primarily showing the flutes formed in the connecting section along the axial line;

FIG. 2 is an axial cross-sectional view of a tool of the present application, primarily illustrating the helical extension of the flutes about the axis at the connecting section;

FIG. 3 is a schematic view of the tool shown in FIG. 1 attached to a tool holding structure;

FIG. 4 is an axial cross-sectional view of the tool shown in FIG. 3 attached to a tool holding structure;

FIG. 5 is a bottom view of the tool shown in FIG. 1 attached to a tool holding structure, primarily illustrating the U-shaped recess;

FIG. 6 is a top view of one of the tools of the present application, primarily illustrating the V-shaped flutes;

FIG. 7 is a top view of a tool of the present application, primarily illustrating the grooves as circular arcs;

FIG. 8 is an axial cross-sectional view of the present application with the tool clamped to the shank;

wherein, 1, a cutter; 11. a connecting section; 12. A working section; 13. a groove; 2. a tool holding structure; 21. a tool clamping hole; 3. a knife handle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. The front end is the end close to the workpiece to be machined when the high-frequency ultrasonic tool shank in the embodiment is adopted for machining, and the rear end is the end away from the workpiece to be machined.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 8, the present application provides a tool 1, which includes a connection section 11 and a working section 12, where the working section 12 is used to process a workpiece, and the connection section 11 is used to be connected with a tool shank, that is, the connection section 11 is clamped by the tool shank, so as to implement precise processing of the workpiece. The external diameter of linkage segment 11 is greater than or equal to the external diameter of working segment 12 to can be connected with the handle of a knife cooperation, guarantee the steadiness of connecting, the work piece of being processed can not be interfered to the diameter of working segment 12 simultaneously, guarantees the precision of work piece processing. While avoiding the tool holding device from closing the outlet of the later described recess 13 after the tool is connected to the tool holding device, the outlet of the recess 13 being located at the front end of the connecting section 11.

Referring to fig. 1 to 8, the connecting section 11 is provided with a plurality of axially extending and radially recessed grooves 13 on the outer periphery thereof, and the grooves 13 extend from the end surface of the connecting section 11 to the rear end of the working section 12. The grooves may extend straight in the axial direction as shown in fig. 1, or may extend spirally around the shaft as shown in fig. 2. When the cutter is connected with the cutter handle with the central through hole, the handle part of the cutter is tightly matched and connected with the cutter handle, the inner peripheral surface of the groove and the inner peripheral surface of the cutter handle form an inner cooling channel which is sealed in the peripheral surface and is axially communicated, and the inner cooling channel is communicated with the central through hole of the cutter handle. The cooling medium and/or the lubricating medium transmitted by the through hole in the center of the cutter handle can be transmitted to the working section through the inner cooling channel comprising the groove 13, and the cooling medium and/or the lubricating medium can be transmitted to the machining area, so that the lubricating and/or cooling effect is realized, the groove can be machined more easily in the connecting section 11, and the machining difficulty is reduced. In one embodiment, the cutting tool of the present application is integrally formed from a hard material, such as tungsten steel. The cooling medium includes: coolant, water, carbon dioxide, nitrogen, air, etc., and the lubricating medium includes oil mist, etc.

Referring to fig. 1, 3 and 4, in order to avoid the interference of the connecting section 11 with the workpiece to be machined as much as possible, a transition section is further included between the connecting section 11 and the working section 12, wherein the diameter of the transition section is greater than or equal to the diameter of the working section 12. In one embodiment, the transition section has a diameter M, the connecting section has a diameter L, and the working section has a diameter N, and the transition section does not interfere with the surface of the machined workpiece when the diameter of the transition section is equal to the diameter of the working section (M = N). The grooves 13 of the connecting section 11 extend from the end face of the connecting section 11 to the rear end of the transition section, and since the cooling medium and/or the lubricating medium is a fluid with pressure, when the cooling medium/lubricating medium reaches the outlet of the grooves 13 along the axial direction, the cooling medium and/or the lubricating medium is sprayed out in a parabolic curve, so that the cooling medium and/or the lubricating medium is not sprayed to the periphery of the rear end of the working section 12. The provision of the transition section thus ensures that the cooling medium and/or the lubricating medium is sprayed onto the surface of the working section 12, while at the same time ensuring the rigidity and strength of the working section.

Alternatively, referring to fig. 1, 3 and 4 in combination with the foregoing example, when the diameter of the transition section is larger than the outer diameter of the working section 12 and smaller than the outer diameter of the connecting section (N < M < L), the outer peripheral surface of the transition section may be any one of a conical surface, a circular arc surface and a cylindrical surface, and the diameter of the rear end of the transition section may be equal to the diameter of the connecting section 11 and the diameter of the front end of the transition section may be equal to the diameter of the working section. When the peripheral surface of the transition section is a cylindrical surface, the connecting section, the transition section and the working section are connected in a step shape. The grooves 13 of the connecting section 11 extend from the end face of the connecting section 11 to the rear end of the transition section, so that cooling medium and/or lubricating medium can be sprayed to the working section 12 along the surface of the transition section, the whole surface of the working section 12 can be contacted with the cooling medium and/or lubricating medium, and the cooling and/or micro-lubricating efficiency of a cutter and a machining area is improved. It should be noted that the embodiments provided in the present application only exemplarily give the shape of the outer peripheral surface of the partial transition section.

In the embodiment that this application provided, refer to fig. 2 and fig. 5 to fig. 7, a plurality of recess 13 evenly distributed in linkage segment 11 periphery for guarantee handle of a knife and cutter 1's connection stability, make cutter 1 periphery can with handle of a knife even contact, guarantee that the handle of a knife can guarantee to the global clamping-force of evenly applying of cutter, guarantee the clamping effect. In other embodiments, the spacing between the grooves is not limited, i.e., the grooves are not uniformly distributed around the circumference of the connecting section.

In the embodiments provided by the present application, referring to fig. 5 to 7, the groove 13 has a V-shape in radial cross section, so that the cooling medium and/or the lubricating medium has a larger contact area with the shank of the clamping tool 1, and the cooling effect is ensured. In a further embodiment, the groove 13 is U-shaped in radial cross-section, so that the cooling and/or lubricating medium has a larger contact area with the shank and tool connecting section 11 holding the tool 1, ensuring a cooling effect. In a further embodiment, the groove 13 is shaped as a circular arc in radial cross section, which, while ensuring a larger contact area of the cooling and/or lubricating medium with the shank holding the tool 1, also ensures a larger contact area of the cooling and/or lubricating medium with the tool connecting section in radial direction, so that the radially outermost peripheral part of the tool connecting section 11 can be cooled more quickly. It should be noted that the embodiments provided in the present application only exemplarily give the shape of the radial cross section of the partial groove, and the groove that can realize the cooling medium/lubricating medium transmission is included in the technical solution of the present application.

The embodiment of the present application still provides a cutter assembly, refer to fig. 3 to 5, including cutter clamping structure 2 and the cutter 1 that the embodiment of the present application provided, cutter clamping hole 21 has been seted up to cutter clamping structure 2, and cutter 1 fixed mounting is in cutter clamping hole 21. In one embodiment, the rear end of the tool is flush with the rear end of the tool holding structure to reduce the accumulation of dirt. In another embodiment, the rear end of the tool is located in the tool holding bore 21 to improve the transport efficiency of a small amount of lubricating medium, such as oil mist. Alternatively, the tool 1 is clamped into the tool holding hole 21 by being shrink-fitted into said tool holding hole 21, i.e. the tool 1 and the tool holding structure 2 are assembled by thermal expansion. Optionally, the tool holding structure 2 is provided with an inner cooling channel (not shown) along the axial direction, and the inner cooling channel is disposed outside the tool holding hole to improve the micro-lubrication efficiency and the cooling efficiency. It should be noted that the tool holding structure 2 provided in the embodiment of the present application is a structure for connecting a tool to a tool shank, and therefore, the tool holding structure may also be a collet, an amplitude transformer, or the like, and thus, the tool holding structure is not limited in this application in particular.

The embodiment of the present application further provides a processing apparatus, refer to fig. 3, fig. 4 and fig. 8, including handle of a knife 3, the cutter assembly that this application embodiment provided, combine aforesaid to know, cutter clamping structure 2 in the cutter assembly has seted up cutter clamping hole 21, cutter 1 set up in cutter clamping hole 21, cutter clamping structure 2 can be connected with collet chuck and amplitude transformer. The handle of a knife 3 can be ultrasonic handle of a knife, hydraulic pressure handle of a knife etc. takes seal assembly's handle of a knife all can realize the technical scheme of this application promptly. The tool handle 3 is provided with an axial through hole, the tool handle comprises a tool handle body, an amplitude transformer and a rivet, the tool handle body, the amplitude transformer and the rivet are coaxially arranged, so that a core pipe for transmitting cooling medium and/or lubricating medium is mounted, the mounting difficulty of a pipeline for transmitting cooling medium and/or lubricating medium is reduced, a sealing pressing ring and a sealing ring are arranged in a corresponding structure, and further the cooling medium and/or the lubricating medium are prevented from leaking into a containing cavity of the tool handle body.

The embodiment of the application further provides a machine tool, including the lathe body, set up the main shaft on the lathe body to and the processingequipment among the technical scheme of this application, processingequipment with the main shaft is connected to cool off and/or the micro-lubrication to the work piece through interior cold mode.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (13)

1. A cutter is characterized by comprising a connecting section and a working section which are integrally formed, wherein the connecting section is used for being connected with a cutter clamping structure connected to a collet chuck, the outer diameter of the connecting section is larger than or equal to that of the working section, a plurality of grooves which are radially recessed are formed in the periphery of the connecting section, the grooves extend from the end face of the connecting section to the rear end portion of the working section, and the grooves are used for transmitting a cooling medium and/or a lubricating medium.

2. The tool according to claim 1, wherein the groove extends linearly in an axial direction.

3. The tool according to claim 1, wherein the groove extends helically around the shaft.

4. The tool according to claim 1, further comprising a transition section disposed between the connecting section and the working section, the groove extending from an end face of the connecting section to a rear end of the transition section.

5. The tool according to claim 4, wherein the transition section outer diameter is equal to the working section outer diameter.

6. The tool according to claim 4, wherein the outer diameter of the transition section is larger than the outer diameter of the working section and smaller than the outer diameter of the connecting section, and the outer peripheral surface of the transition section is a conical surface or a cylindrical surface.

7. The tool according to claim 1, wherein a plurality of the flutes are evenly distributed about the periphery of the connecting section.

8. The tool according to claim 1, wherein the shape of the groove in a radial cross section is any one of a V-shape, a U-shape, and a circular arc shape.

9. A tool assembly comprising a tool holding structure and a tool according to any one of claims 1 to 8, the tool holding structure defining a tool holding aperture in which the tool is fixedly mounted.

10. The cutter assembly of claim 9, wherein said cutter is heat mounted within said cutter-retaining bore.

11. The tool assembly of claim 9, wherein the tool holding structure is axially provided with internal cooling channels.

12. A machining device, characterized by comprising a shank and the tool assembly according to any one of claims 9 to 11, wherein the tool assembly is connected to the shank, and the shank is provided with an inner-cooling through hole axially communicating with the tool holding hole.

13. A machine tool comprising a machine tool body, a spindle provided on the machine tool body, and the machining device according to claim 12, the machining device being connected to the spindle.

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