A detachable thread milling cutter

Abstract

The present application relates to the technical field of thread milling cutters, and more specifically to a detachable thread milling cutter, comprising: a cutter body, one end of the cutter body having a plurality of mounting grooves arranged in an annular shape, the side surface of the cutter body having a plurality of lubrication holes arranged in an annular shape, and the end of the cutter body away from the mounting groove having a blind hole, the blind hole being connected to each lubrication hole. The utility model provides a blind hole in the cutter body and connects the blind hole with the lubrication hole. Even if the aperture of the threaded hole to be machined is slightly larger than the maximum radial dimension of the detachable thread milling cutter, the lubricating fluid can flow into the blind hole and flow directly to the milling processing area along the lubrication hole, thereby achieving the advantage that the lubricating fluid can flow directly to the milling processing area, and the cooling and lubrication effect is better.

Description

Technical Field

[0001] The present application relates to the technical field of thread milling cutters, and more specifically to a detachable thread milling cutter. Background Art

[0002] Traditional thread processing methods mainly use thread turning tools to turn threads or use taps, dies for manual tapping and threading. With the development of CNC processing technology, thread milling with thread milling cutters has been widely used. Depending on whether the blade on the cutter body is detachable, thread milling cutters include integrated thread milling cutters and detachable thread milling cutters. Detachable thread milling cutters can achieve thread processing of different pitches by replacing the blade.

[0003] Our company currently has a detachable thread milling cutter, such as Figure 1 As shown, it includes a cutter body 90, one end of which has a plurality of mounting grooves 901 for mounting blades. Before milling, the blades are fixedly mounted in the mounting grooves 901, and the cutter body 90 is mounted on the working axis of the milling center to perform thread milling on the clamped workpiece. However, when using the above-mentioned detachable thread milling cutter to mill threads, the processing personnel need to align the lubricating liquid cavity port with the threaded hole to be processed. When the aperture of the threaded hole to be processed is slightly larger than the sum of the maximum radial dimensions of the blade installed on the cutter body 90, due to the small clearance at the threaded hole aperture, the lubricating liquid flows into the milling processing area slowly, and the cooling and lubrication effect is poor.

[0004] Therefore, there is a need to provide a detachable thread milling cutter that can directly flow lubricating fluid to the milling processing area and has better cooling and lubrication effects. Utility Model Content

[0005] The main purpose of the present application is to provide a detachable thread milling cutter, wherein the detachable thread milling cutter comprises a cutter body, one end of the cutter body has a plurality of mounting grooves arranged in an annular shape, the side of the cutter body has a plurality of lubrication holes arranged in an annular shape, and the end of the cutter body away from the mounting groove has a blind hole, and the blind hole is connected with each of the lubrication holes. By arranging the blind hole in the cutter body and connecting the blind hole with the lubrication hole, even if the aperture of the machined threaded hole is slightly larger than the maximum radial dimension of the detachable thread milling cutter, the lubricating fluid can flow from the blind hole and flow directly to the milling processing area along the lubrication hole. Compared with the prior art, the lubricating fluid can flow directly to the milling processing area, and the cooling and lubrication effect is better.

[0006] Another object of the present application is to provide a detachable thread milling cutter, wherein the cutter body has an annular groove at one end of the mounting groove, the mounting groove divides the annular groove, and the bottom side wall of the annular groove is an inclined surface, and by setting the annular groove, the lubricating liquid splashed into the annular groove slides from the inclined surface to the corresponding blade.

[0007] Another object of the present application is to provide a detachable thread milling cutter, wherein one end of the tool body having the mounting groove also has a plurality of splash grooves arranged in an annular shape, the splash groove and the mounting groove are staggered in the circumferential direction of the tool body, and the splash groove is located on the side of the mounting groove close to the blind hole, and each of the splash grooves is provided with a lubrication hole, and the bottom side surface of each splash groove has a chamfer, and the splash groove is provided to facilitate the lubricating liquid splashed into the splash groove to flow into the annular groove.

[0008] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a detachable thread milling cutter, wherein the detachable thread milling cutter comprises:

[0009] A knife body, one end of which has a plurality of mounting grooves arranged in a ring shape, the side of the knife body has a plurality of lubrication holes arranged in a ring shape, and the end of the knife body away from the mounting groove has a blind hole, the blind hole is connected to each of the lubrication holes.

[0010] In one or more embodiments of the present application, the mounting grooves correspond to the lubrication holes one by one, and the mounting grooves and the lubrication holes are staggered in the circumferential direction of the cutter body.

[0011] In one or more embodiments of the present application, the blade body has an end having the mounting groove and further has an annular groove, the mounting groove partitions the annular groove, and the bottom side wall of the annular groove is an inclined surface.

[0012] In one or more embodiments of the present application, one end of the blade body having the mounting groove also has a plurality of splash grooves arranged in a ring shape, the splash groove and the mounting groove are staggered in the circumferential direction of the blade body, and the splash groove is located on the side of the mounting groove close to the blind hole, and each of the splash grooves is provided with a lubrication hole, and the bottom side of each of the splash grooves has a chamfer.

[0013] In one or more embodiments of the present application, each of the mounting grooves has a mounting hole.

[0014] In one or more embodiments of the present application, the included angles of any two adjacent mounting holes in a group are different.

[0015] In one or more embodiments of the present application, the blade body further includes a threaded protrusion, and the threaded protrusion is located at an end of the blade body away from the mounting groove.

[0016] In one or more embodiments of the present application, the tool body further includes a plurality of clamping surfaces sequentially connected in the circumferential direction of the tool body, and the clamping surfaces are located between the threaded protrusion and the lubrication hole.

[0017] In one or more embodiments of the present application, the blade body further includes a connecting hole, and the connecting hole extends a predetermined distance from an end portion of the blade body having the mounting groove toward the direction of the threaded protrusion.

[0018] In an embodiment of the present application, a detachable thread milling cutter includes a cutter body, one end of the cutter body has a plurality of mounting grooves arranged in a ring shape, the side of the cutter body has a plurality of lubrication holes arranged in a ring shape, and the end of the cutter body away from the mounting groove has a blind hole, the blind hole is connected to each lubrication hole, by arranging the blind hole in the cutter body and connecting the blind hole with the lubrication hole, even if the aperture of the machined threaded hole is slightly larger than the maximum radial dimension of the detachable thread milling cutter, the lubricating fluid can flow into the blind hole and flow directly to the milling processing area along the lubrication hole. Compared with the prior art, the lubricating fluid can flow directly to the milling processing area, and the cooling and lubrication effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0020] Figure 1 The figure shows a structural schematic diagram of an existing detachable thread milling cutter;

[0021] Figure 2 The figure shows a structural schematic diagram of a detachable thread milling cutter of the utility model from a certain viewing angle;

[0022] Figure 3 The figure shows a cross-sectional view of a detachable thread milling cutter of the utility model;

[0023] Figure 4 The figure shows a schematic structural diagram of a detachable thread milling cutter from another perspective;

[0024] Figure 5 The figure shows a structural schematic diagram of a detachable thread milling cutter from another perspective. DETAILED DESCRIPTION

[0025] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0028] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0029] Application Overview

[0030] When using a detachable thread milling cutter to mill threads, the processing personnel need to align the lubricating fluid chamber opening with the threaded hole to be processed. When the aperture of the threaded hole to be processed is slightly larger than the sum of the maximum radial dimensions of the blade installed on the cutter body, due to the small clearance at the threaded hole opening, the lubricating fluid flows into the milling processing area slowly, and the cooling and lubrication effect is poor.

[0031] Based on the above technical problems, the present application proposes a detachable thread milling cutter, wherein the detachable thread milling cutter has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the detachable thread milling cutter provided by the present application is easy to produce and low-cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0032] Schematic detachable thread milling cutter,

[0033] refer to Figures 2 to 5 According to a preferred embodiment of the utility model, a detachable thread milling cutter comprises a cutter body 10, one end of the cutter body 10 has a plurality of mounting grooves 101 arranged in an annular shape, the mounting grooves 101 are used to install a blade, the side of the cutter body 10 has a plurality of lubrication holes 102 arranged in an annular shape, the end of the cutter body 10 away from the mounting groove 101 has a blind hole 103, the blind hole 103 is obtained by extending a predetermined distance from the end surface of the cutter body 10 away from the mounting groove 101 in the direction of the mounting groove 101, and the blind hole 103 is connected to each of the lubrication holes 102.

[0034] It should be noted that, in the prior art, when milling the threaded hole to be processed, the external lubricating liquid cavity is aligned with the threaded hole to be processed. When the aperture of the threaded hole to be processed is slightly larger than the maximum radial dimension of the detachable thread milling cutter, due to the small clearance through the aperture of the threaded hole to be processed, the unit flow rate of the coolant passing through the aperture of the threaded hole to be processed is small, and it is difficult to timely fully cool and lubricate the thread milling part; and in the embodiment of the present application, by providing the blind hole 103 and the lubricating hole 102 on the cutter body 10, when milling the threaded hole to be processed, the lubricating liquid can be lubricated from the blind hole 10 3 is injected and flows to each of the lubrication holes 102. Since the lubricating liquid flows directly from the channel inside the cutter body 10 to the thread milling part at this time, even in the case where the hole diameter of the threaded hole to be processed is slightly larger than the maximum radial dimension of the detachable thread milling cutter, the lubricating liquid can still fully lubricate the milling part; in addition, since the lubrication holes 102 are arranged in an annular shape, the lubricating liquid can cool and lubricate the side of the threaded hole to be processed more evenly. It is obvious that, compared with the prior art, the embodiment of the present application has the advantage that the lubricating liquid can flow directly to the milling processing area, and the cooling and lubrication effect is better.

[0035] Furthermore, since it still takes a short time for the lubricating liquid to flow out of the lubricating hole 102 and fall onto the thread surface to be processed, in order to realize the milling of the blade in the installation groove 101, the lubricating liquid can be poured on the milling place more timely, referring to Figure 2 and Figure 4 The mounting grooves 101 correspond to the lubrication holes 102 one by one, and the mounting grooves 101 and the lubrication holes 102 are staggered in the circumferential direction of the cutter body 10. More specifically, each of the lubrication holes 102 is located on one side of the shorter side of the mounting groove 101, and the included angle is 4° to 7°.

[0036] Furthermore, when the lubricating liquid slides out of the lubrication hole 102 and contacts the wall of the processed threaded hole, residual lubricating liquid is likely to splash onto the side surface of the end of the tool body 10 having the mounting groove 101. In the prior art, since one side of the tool body 10 having the mounting groove 101 is a smooth cylindrical surface, this part of the splashed residual lubricating liquid will freely slide down along the cylindrical surface under the action of gravity, and only a small part of the residual lubricating liquid falls on the blade below, resulting in waste.

[0037] In view of this, in the embodiments of the present application, Figure 2 and Figure 5 As shown, the blade body 10 has an annular groove 104 at one end of the mounting groove 101 . The mounting groove 101 partitions the annular groove 104 , and the bottom side wall of the annular groove 104 is an inclined surface.

[0038] It should be noted that, by providing the annular groove 104, when the splashed residual lubricant falls into the annular groove 104, it will fall onto the corresponding blade along the inclined surface at the bottom of the annular groove 104, and finally flow out along the lubricant flow channel formed on the blade. Compared with the prior art, the splashed residual lubricant is fully utilized to further lubricate the blade.

[0039] It should also be noted that if the splashed lubricant residue splashes directly onto the area of ​​the cutter body 10 above the blade, this portion of the lubricant residue will flow directly onto the blade under the action of gravity.

[0040] Furthermore, when the splashed lubricating liquid falls above the annular groove 104, in order to facilitate the lubricating liquid to slide into the annular groove 104, as shown in FIG. Figure 2 and Figure 5 As shown, the blade body 10 has a plurality of splash grooves 105 arranged in an annular shape at one end of the installation groove 101. The splash grooves 105 and the installation grooves 101 are arranged in an offset manner in the circumferential direction of the blade body 10, and the splash grooves 105 are located on the side of the installation groove 101 close to the blind hole 103, and each of the splash grooves 105 is provided with a lubrication hole 102, and the bottom side of each of the splash grooves 105 has a chamfer; in addition, the side of the annular groove 104 away from the inclined surface also has a chamfer. It should be noted that when the splashed lubricating liquid falls into the splash groove 105, it will slide down along the chamfer at the bottom and flow into the annular groove 104 along the chamfer of the annular groove 104.

[0041] Further, in the embodiment of the present application, the blade is fixed to the blade body 10 by bolts. More specifically, Figure 2 and Figure 4As shown, each of the mounting slots 101 has a mounting hole 106 therein, and the mounting hole 106 has threads.

[0042] Further, in the embodiments of the present application, referring to Figure 4 , the included angles of any two adjacent mounting holes 106 in a group are not the same. More specifically, the number of the mounting slots 101 is 6, the slot widths of each mounting slot 101 are equal, and the positions of the mounting holes 106 in each mounting slot 101 are all at the central plane of the mounting slot 101; the included angle of one group of two adjacent mounting holes 106 is 62°, the included angle of another group of two adjacent mounting holes 106 is 61°, the included angle of another group of two adjacent mounting holes 106 is 55°, the included angle of another group of two adjacent mounting holes 106 is 60°, and the included angles of the remaining two groups are 64° and 58°, respectively.

[0043] Further, in order to realize the connection between the blade body 10 and the outside, refer to Figure 2 , Figure 3 and Figure 5 The blade body 10 further includes a threaded protrusion 107 , and the threaded protrusion 107 is located at an end of the blade body 10 away from the mounting groove 101 .

[0044] Furthermore, in order to facilitate the clamping of the detachable thread milling cutter, as Figure 2 and Figure 5 As shown, the cutter body 10 further includes a plurality of clamping surfaces 108 sequentially connected in the circumferential direction of the cutter body 10, and the clamping surfaces 108 are located between the threaded protrusion 107 and the lubrication hole 102. In the embodiment of the present application, the number of the clamping surfaces 108 is six, and the cross-section of the portion of the cutter body 10 having the clamping surfaces 108 is generally a regular hexagon.

[0045] Furthermore, if Figure 2 and Figure 3 As shown, the blade body 10 further includes a connecting hole 109, which extends a predetermined distance from one end of the blade body 10 having the mounting groove 101 toward the threaded protrusion 107, and has a thread in the connecting hole 109. It should be noted that in the embodiment of the present application, the connecting hole 109 is connected to the lubrication hole 102, and the hole diameter of the connecting hole 109 is larger than the hole diameter of the lubrication hole 102. When each of the blades is placed in the corresponding mounting groove 101, it is connected to the blade body 10 through a cover plate and each of the blades is pressed. The function of the connecting hole 109 is to provide a prerequisite for the bolt connection between the blade body 10 and the cover plate.

[0046] In summary, the detachable thread milling cutter according to the embodiment of the present application is explained, which provides the detachable thread milling cutter with advantages such as lubricating liquid being able to flow directly to the milling processing area and better cooling and lubrication effects.

[0047] It is worth mentioning that in the embodiment of the present application, the detachable thread milling cutter has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the detachable thread milling cutter provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0048] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A detachable thread milling cutter, characterized in that: The detachable thread milling cutter comprises A knife body, one end of the knife body has a plurality of mounting grooves arranged in an annular shape, the side of the knife body has a plurality of lubrication holes arranged in an annular shape, the end of the knife body facing away from the mounting groove has a blind hole, the blind hole is connected to each of the lubrication holes, the mounting grooves correspond to the lubrication holes one by one, and the mounting grooves and the lubrication holes are staggered in the circumferential direction of the knife body, the end of the knife body having the mounting groove also has an annular groove, the mounting groove separates the annular groove, and the bottom side wall of the annular groove is an inclined surface, the end of the knife body having the mounting groove also has a plurality of splash grooves arranged in an annular shape, the splash groove and the mounting groove are staggered in the circumferential direction of the knife body, and the splash groove is located on the side of the mounting groove close to the blind hole, and each of the splash grooves is provided with a lubrication hole, and the bottom side of each splash groove has a chamfer.

2. The detachable thread milling cutter according to claim 1, characterized in that: Each of the mounting grooves has a mounting hole.

3. The detachable thread milling cutter according to claim 2, characterized in that: The included angles of any two adjacent mounting holes are different.

4. The detachable thread milling cutter according to claim 3, characterized in that: The knife body further comprises a threaded protrusion, and the threaded protrusion is located at an end of the knife body away from the mounting groove.

5. The detachable thread milling cutter according to claim 4, characterized in that: The cutter body further comprises a plurality of clamping surfaces which are sequentially connected in the circumferential direction of the cutter body, and the clamping surfaces are located between the threaded protrusion and the lubrication hole.

6. The detachable thread milling cutter according to claim 5, characterized in that: The knife body further comprises a connecting hole, wherein the connecting hole extends from an end portion of the knife body having the mounting groove toward the direction of the threaded protrusion by a predetermined distance.

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