CN109500442B - Variable-diameter disc milling cutter handle tool - Google Patents
Variable-diameter disc milling cutter handle tool Download PDFInfo
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- CN109500442B CN109500442B CN201811506587.8A CN201811506587A CN109500442B CN 109500442 B CN109500442 B CN 109500442B CN 201811506587 A CN201811506587 A CN 201811506587A CN 109500442 B CN109500442 B CN 109500442B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/08—Disc-type cutters
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Abstract
The application discloses but reducing disc milling cutter handle of a knife instrument belongs to machining technical field. The tool comprises a cutter head main body, a machining cutter bar and a first locking mechanism, wherein the cutter head main body (1) comprises a central cylinder (11) connected with a milling cutter handle (5) and a plurality of mounting bosses (12) distributed on the peripheral side of the central cylinder (11), a through hole is formed in any one of the mounting bosses (12), and the axis of the through hole is intersected with the axis of the central cylinder (11) on one surface of the cutter head main body (1) facing the milling cutter handle (5); the machining cutter bar (4) is arranged in the through hole in a sliding manner; the first locking mechanism is used for fixing the machining cutter rod (4) after the machining cutter rod moves to a set position. The cutter rod is slid along the direction of the inclination angle of the through hole, the cutter points with different radius values are different in height, and accordingly layered cutting of different cutting depths of the cutter head main body of the variable-diameter disc milling cutter in each rotation feeding can be achieved, and the precision of a machined surface is improved.
Description
Technical Field
The application belongs to the technical field of machining, in particular to a diameter-variable disc milling cutter handle tool.
Background
In machining, large-area planar milling is the most common machining application scenario. At present, a large-diameter disc milling cutter is mostly adopted and is formed by repeatedly milling, and the reciprocating times are determined by the width of a machined surface/(the diameter of the disc milling cutter-the cutter path overlapping amount). Because the diameter of the cutter head which can be selected to be used is a fixed value, a large number of cutter paths for smoothing planes and switching R are needed during programming, and the production efficiency is difficult to further improve under the condition that the processing depth is constant each time.
The corner R is an indispensable processing content in the mechanical processing, when the radius of the cutter head is smaller than the required radius R, a programming means is needed to carry out circular interpolation milling processing, and the processing surface has high smoothness and high precision due to the existence of the trimming allowance. If the radius of the cutter disc is equal to the required radius R, circular interpolation supplementary machining is not needed, but because of no trimming allowance, factors such as vibration and the like influence, the finish degree of a machined surface is poor, and the optimal material removing efficiency can be obtained. And if the radius of the cutter head is larger than the required R radius, the required R size cannot be machined.
The single-piece production working hours of large mechanical parts such as steel beams, guide rails, boxes and other parts are very long, and the time required by one-time reciprocating milling is as long as ten minutes to dozens of minutes. Since the disc milling cutters which can be selected to be used are all of a fixed diameter, the number of reciprocations required for machining is also fixed, and it is difficult to further improve the production efficiency with a constant depth of machining each time.
In the case body processing, the cavity processing is an indispensable processing content. If the radius of the disc milling cutter matched with the machine tool is larger than the required R size, the cutter with the small diameter needs to be replaced to adjust and machine the R size again, and the machining time is increased. In the actual generation process, due to the variety of products, the diameter of the disc milling cutter which can be selected in programming has great influence on the programming of the processing program, and a large amount of processing time is consumed.
Disclosure of Invention
It is an object of the present application to provide a variable diameter disc cutter handle tool to address at least one of the problems discussed above.
The application discloses but reducing disc milling cutter handle of a knife instrument includes:
the cutter head main body comprises a central cylinder body and a plurality of mounting bosses, wherein the central cylinder body can be connected with the milling cutter handle, the mounting bosses are distributed on the periphery of the central cylinder body, a through hole is formed in any one of the mounting bosses, and the axis of the through hole is intersected with the axis of the central cylinder body on one surface of the cutter head main body, which faces the milling cutter handle;
the machining cutter bar is arranged in the through hole in a sliding manner;
and the first locking mechanism is used for fixing the machining cutter rod after the machining cutter rod moves to a set position.
Preferably, the first locking mechanism comprises a fixing screw, and a threaded hole is formed in the side wall of the through hole and is adapted to mount the fixing screw.
Preferably, the through-hole is the quad slit, the machine adds the cutter arbor and has the adaptation the quad slit's square body of rod.
Preferably, the blade of the machining cutter rod is detachably connected to the end part of the machining cutter rod.
Preferably, the number of the mounting bosses is four, and the four mounting bosses are uniformly distributed on the peripheral side of the central column.
Preferably, the intersection angle of the axis of the through hole and the axis of the central cylinder is 25-45 degrees.
Preferably, the intersection angle of the axis of the through hole and the axis of the central cylinder is 30-35 °.
Preferably, still include the radius calibrator, the one side that deviates from the center cylinder of blade disc main part be provided with the coaxial blind hole of center cylinder, the radius calibrator include guide arm, slide rail and can gliding slider on the slide rail, the one end of slide rail can wind the guide arm is rotatory, guide arm demountable installation in the blind hole, the slider is when sliding to setting for the position, locks through second locking mechanical system.
Preferably, the guide rod is connected with the slide rail through a bearing.
Preferably, the second locking mechanism comprises a locking screw, a through hole is formed in the sliding block and sleeved on the sliding rail in a sliding mode, a second threaded hole is formed in the side wall of the through hole, and the locking screw is installed in a matched mode.
The length of probing out of this application machine plus cutter arbor can cooperate the radius calibrator of different readings to finely tune out the radius value that the discrepancy is different. Because the machining cutter bar slides along the direction of the inclination angle of the through hole, the heights of the cutter points corresponding to different radius values are different, so that the layered cutting of the variable-diameter disc milling cutter head main body with different cutting depths can be realized when the cutter head main body is fed in each rotation, and the precision of the machined surface is improved. Because the extension lengths of the machining cutter bars are different, the cutting amount born by a single cutter bar is different, the abrasion speed of the rough machining cutter bar is different from that of the finish machining cutter bar, and the service life of the cutter bar is greatly prolonged.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of the variable diameter disc cutter handle tool of the present application;
FIG. 2 is a front view of the embodiment of FIG. 1 of the present application;
fig. 3 is an exploded view of the embodiment of fig. 1 of the present application.
The milling cutter comprises a cutter head body 1, a center column 11, a mounting boss 12, a radius calibrator 2, a guide rod 21, a sliding rail 22, a sliding block 23, a fixing screw 3, a machining cutter rod 4 and a milling cutter handle 5.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "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 used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The variable diameter disc milling cutter shank tool of the present application is described in further detail below with reference to fig. 1-3.
This application but reducing disc milling cutter handle of a knife instrument includes:
the cutter head main body 1 comprises a central column body 11 capable of being connected with the milling cutter handle 5 and a plurality of mounting bosses 12 distributed on the peripheral side of the central column body 11, wherein a through hole is formed in any one of the mounting bosses 12, and the axis of the through hole is intersected with the axis of the central column body 11 on one surface, facing the milling cutter handle 5, of the cutter head main body 1;
the machining cutter bar 4 is arranged in the through hole in a sliding mode;
and the first locking mechanism is used for fixing the machining cutter rod 4 after the machining cutter rod moves to a set position.
In this embodiment, the disc milling cutter adopts a straight shank type structure, as shown in fig. 1 to 3, a rotary installation shank, i.e., a central column 11, is arranged on a cutter head main body 1 of the disc milling cutter, and is suitable for matching and clamping a standard milling cutter shank and a clamp spring. According to the application, a plurality of mounting bosses 12 are machined on a cutter head main body 1 of the variable-diameter disc milling cutter, then through holes are machined in the mounting bosses, in some optional embodiments, as shown in fig. 1-3, four mounting bosses are machined in total, four square inclined holes symmetrical by 90 degrees are correspondingly machined, and the central lines of the square inclined holes pass through side generatrices of the cutter head main body 1 of the variable-diameter disc milling cutter and are inclined to the rotation axis of a main shaft. And a machining cutter bar 4 with replaceable blades is arranged in the square inclined hole, the machining cutter bar 4 slides along the inclined direction of the square inclined hole, and when the machining cutter bar 4 slides in place, the first locking mechanism is used for locking, so that the machining cutter bar 4 is fixed relative to the cutter head main body 1, and the radius required by the rotation of the cutter head is determined.
This application is because machine adds cutter arbor 4 and slides along square inclined hole inclination direction, and the corresponding knife tip height of different radius values is different to this realization variable diameter disc milling cutter blade disc main part 1 different depth of cut's when the every commentaries on classics feeds layering cutting, with the improvement machined surface precision. Because the extension lengths of the machining cutter bars 4 are different, the cutting amount born by a single cutter bar is different, the abrasion speed of the rough machining cutter bar is different from that of the fine machining cutter bar, and the service life of the cutter bar is greatly prolonged. The cutter head has strong universality, can quickly calibrate and change the diameter of the cutter head, and is suitable for processing parts and components with frequently changed sizes of new products.
In this embodiment, the cutter head body 1 is a disc-shaped cylinder. The small end cylinder (central column 11) of the upper plane has the diameter phi of 32mm and is tightly connected with the standard milling cutter handle 5. 4 cutting angles which are symmetrical at 90 degrees and inclined at 30 degrees are processed on the cutter head main body to reduce weight and increase the strength of the cutter head. The diameter of the large end is phi 100mm, four 90-degree symmetrical square inclined holes are processed at the large end of the cutter head main body, and the central line of each square inclined hole passes through a side generatrix of the cutter head main body and is inclined to the rotation axis of the main shaft.
In this embodiment, any standard milling cutter shank with a straight shank clamping capacity of a diameter of Φ 32mm can be used as the milling cutter shank 5. In actual use, the specific diameters of the milling cutter head main bodies for manufacturing the variable-diameter disc milling cutters are different, so that the straight handle clamping part of the milling cutter head main body can be changed, and an applicable standard milling cutter handle or a milling cutter head with an integrated cutter body and handle can be selected as required.
In some alternative embodiments, the first locking mechanism comprises a fixing screw 3, and the through hole sidewall is provided with a threaded hole adapted to mount the fixing screw 3. In some alternative embodiments, the through hole is a square hole, and the machining tool bar 4 has a square rod body fitted to the square hole.
In an alternative embodiment, the through hole may also be provided as a threaded circular hole to accommodate screwing of a machine tool bar 4 having an external thread, so that locking of the machine tool bar 4 relative to the cutterhead body 1 is performed as a first locking structure by means of rotational adjustment.
In some optional embodiments, the blade of the machining tool bar 4 is detachably connected to the end of the machining tool bar 4, and the blade meeting the actual product requirement can be selected according to the actual machining condition.
In some alternative embodiments, the intersection angle of the through hole axis and the axis of the center column 11 is 25 ° to 45 °.
In some alternative embodiments, the intersection angle of the through hole axis and the axis of the central cylinder (11) is 30-35 °.
The range of the inclination angle of the square inclined hole is selected from 25 degrees to 45 degrees. When a larger inclination angle such as 45 degrees is selected, the telescopic adjustment of the machining cutter rod 4 is most convenient, but the cutter rod extending stroke can be influenced by the interference of the diameter of the cutter head clamping cutter handle during the telescopic adjustment. And the cutter bar is too long to extend out, so that the integral rigidity of the cutter head is influenced, vibration is easily caused in ferrous metal processing, the smoothness of the surface of a part is difficult to ensure, but the cutter head of the variable-diameter disc milling cutter with the square inclined hole inclined by 45 degrees has the largest adjustment stroke range when nonferrous metals are processed.
When a smaller inclination angle, such as 25 °, is selected, the extension and retraction stroke of the machining tool bar 4 is not limited by the diameter of the tool shank holding portion. But the range of travel over which the cutter head can be adjusted is minimal. Enough rigidity and strength can be ensured when ferrous metal and difficult-to-machine materials are machined, and roughness and size can be ensured. The strength and the applicability of the cutter bar of the square inclined hole are optimal within the range of 30-35 degrees through repeated practice, the processing size is stable, and the universality and the flexibility are strong. In practical production, the cutter bars with various inclination angles are flexibly selected according to the requirements of actual products.
In some optional embodiments, the cutter head further comprises a radius calibrator 2, a blind hole coaxial with the center column 11 is formed in one surface, deviating from the center column 11, of the cutter head main body 1, the radius calibrator 2 comprises a guide rod 21, a slide rail 22 and a slide block 23 capable of sliding on the slide rail 22, one end of the slide rail 22 can rotate around the guide rod, the guide rod 21 is detachably mounted in the blind hole, and the slide block 23 is locked by a second locking mechanism when sliding to a set position.
In some alternative embodiments, the guide bar 21 is coupled to the slide rail 22 via a bearing.
In some optional embodiments, the second locking mechanism includes a locking screw, a through hole is formed in the slider 23 to be sleeved on the slide rail 22 in a sliding manner, and a second threaded hole is formed in a side wall of the through hole to be adapted to the locking screw.
In the above embodiment, the center of the bottom of the cutter head body 1 is machined into a round hole with the depth of phi 14mm and the round hole with the depth of 15mm, and the round hole is connected with the radius calibrator 2 when the radius of the cutter head R is calibrated.
The radius calibrator 2 comprises a guide rod 21, a slide rail 22 and a slide block 23, wherein the slide rail 22 is of a rectangular structure, and one end of the slide rail 22 is processed with a cylindrical connecting rod (the guide rod 21) which is vertically connected with a phi 14mm diameter and is used for being connected with a phi 14mm hole at the lower end of a cutter disc when the radius of the cutter disc is calibrated. Metric length readings are depicted on the sides of the slide 22 for positioning in adjusting the calibration size. The sliding block 23 is of a cuboid structure, and a square groove is machined on the side face of the sliding block 23 and used for sliding on the sliding rail 22 to match with size calibration. The locking screw of the radius calibrator is used for locking the radius calibrator slide after the radius calibrator performs size reading calibration.
When the device is used, the sliding block 23 of the radius calibrator is adjusted according to the required radius R value and metric reading carved on the sliding rail 22, and the locking screw of the radius calibrator is fastened after the required radius value is adjusted.
And inserting the guide rod 21 on the adjusted radius calibrator slide rail 22 into a central hole phi 14mm at the bottom of the variable diameter disc milling cutter head body 1. The machining cutter bar 4 with the installed blades is inserted into the square inclined hole in the cutter head main body 1 of the variable-diameter disc milling cutter, and the sliding machining cutter bar 4 fastens the machining cutter bar 4 through the fixing screw 3 on the cutter head main body after the cutter head touches the sliding block 23 of the radius calibrator. After the adjustment is repeated for three times, four machining cutter bars 4 are completely fastened on the cutter head main body 1 of the variable-diameter disc milling cutter, and the turning radius of the cutter head is the required radius R.
The protruding lengths (radiuses R) of the four machine cutter bars 4 can be matched with the radius calibrator 2 with different readings to finely adjust radius values with different differences. Because the machining cutter bar 4 slides along the direction of the inclination angle of the square inclined hole, the heights of the cutter points corresponding to different radius values are different, so that the layered cutting of different cutting depths of the cutter head main body 1 of the variable-diameter disc milling cutter can be realized when the cutter head main body is fed in each rotation, and the precision of the machined surface is improved. Because the extension lengths of the machining cutter bars 4 are different, the cutting amount born by a single cutter bar is different, the abrasion speed of the rough machining cutter bar is different from that of the fine machining cutter bar, and the service life of the cutter bar is greatly prolonged.
The cutter head of the variable-diameter disc milling cutter has strong universality and high flexibility, and the problem of the diversity of the diameters of the cutters required by large-scale cross beams, guide rails and box parts in machining is solved. The cutter head has the characteristics of reducing and staggered deep milling, so that the cutter head has the characteristic of obviously improving the production efficiency in large-area processing. The cutter paths used for smoothing planes and switching R in a large quantity during programming are saved, and therefore the production efficiency is greatly improved during processing. The problems of long customized time, high cost and the like of the special cutter during small-batch processing are solved. Because the cutter head of the variable-diameter disc milling cutter has strong universality and simple operation, the technical requirements on operators are reduced, and the product quality and the production efficiency are ensured by fully utilizing the conventional common low-price cutter.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A variable diameter disc milling cutter handle tool, comprising:
the cutter head main body (1) comprises a central cylinder (11) capable of being connected with a milling cutter handle (5) and a plurality of mounting bosses (12) distributed on the peripheral side of the central cylinder (11), a through hole is formed in any one of the mounting bosses (12), and the axis of the through hole is intersected with the axis of the central cylinder (11) on one surface, facing the milling cutter handle (5), of the cutter head main body (1);
the machining cutter bar (4) is arranged in the through hole in a sliding mode;
the first locking mechanism is used for fixing the machining cutter rod (4) after the machining cutter rod moves to a set position;
but reducing disc milling cutter handle of a knife instrument still includes radius calibrator (2), the one side that deviates from central cylinder (11) of blade disc main part (1) be provided with the coaxial blind hole of central cylinder (11), radius calibrator (2) include guide arm (21), slide rail (22) and can gliding slider (23) are gone up in slide rail (22), the one end of slide rail (22) can wind the guide arm is rotatory, guide arm (21) demountable installation be in the blind hole, slider (23) are when sliding to setting for the position, lock through second locking mechanical system.
2. The variable diameter disc milling cutter handle tool according to claim 1, wherein the first locking mechanism comprises a set screw (3), and the through hole sidewall is provided with a threaded hole adapted to mount the set screw (3).
3. The variable diameter disc mill handle tool according to claim 2, characterized in that the through hole is a square hole, and the machining bar (4) has a square rod body fitting the square hole.
4. The variable diameter disc milling cutter handle tool according to claim 1, wherein the insert of the machining tool bar (4) is removably attached to an end of the machining tool bar (4).
5. The variable diameter disc mill shank tool according to claim 4, characterized in that the mounting bosses (12) have four, evenly distributed on the periphery of the central column (11).
6. A variable diameter disc milling cutter shank tool according to claim 1, wherein the intersection angle of the through bore axis and the axis of the central cylinder (11) is 25 ° to 45 °.
7. A variable diameter disc milling cutter shank tool according to claim 1, wherein the intersection angle of the through bore axis and the axis of the central cylinder (11) is 30 ° to 35 °.
8. The variable diameter disc milling cutter handle tool according to claim 1, wherein the guide bar (21) is connected with the slide rail (22) by a bearing.
9. The variable diameter disc milling cutter handle tool according to claim 1, wherein the second locking mechanism comprises a locking screw, a through hole is formed in the sliding block (23) to be slidably sleeved on the sliding rail (22), and a second threaded hole is formed in a side wall of the through hole and adapted to be mounted with the locking screw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811506587.8A CN109500442B (en) | 2018-12-10 | 2018-12-10 | Variable-diameter disc milling cutter handle tool |
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| CN201811506587.8A CN109500442B (en) | 2018-12-10 | 2018-12-10 | Variable-diameter disc milling cutter handle tool |
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| CN109500442A CN109500442A (en) | 2019-03-22 |
| CN109500442B true CN109500442B (en) | 2020-08-11 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110842258B (en) * | 2019-11-18 | 2020-11-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for adjusting cutting diameter of drill bit |
| CN118023594B (en) * | 2024-04-09 | 2024-06-18 | 苏州高昇精密工具有限公司 | Variable-diameter multi-form ball end mill |
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| CN109500442A (en) | 2019-03-22 |
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