Large-cutting-depth inserted tooth end face milling cutter with adjustable tooth depth and tooth depth adjusting method

Abstract

The tooth-depth-adjustable large-cutting-depth tooth-inserted end face milling cutter comprises a cutter connecting base, a plurality of sliding grooves are formed in the periphery of the lower portion of the cutter connecting base, an upper connecting sinking groove is formed in the center of the upward end of the cutter connecting base, and a circular lower connecting sinking groove is formed in the center of the downward end of the cutter connecting base. A connecting hole is formed in the cutter connecting seat between the upper connecting sinking groove and the lower connecting sinking groove; the cutter position adjusting assembly comprises a sliding block which is just connected to the cutter connecting base in a sliding mode through the sliding groove, a height-adjustable cutter bar is connected to the sliding block, and a cutter body is fixedly connected to the portion, below the cutter connecting base, of the cutter bar; the multi-cutter-position adjustable design is adopted, multiple cutter positions are adjusted to be in stepped distribution in the working condition, the total allowance of plane machining is distributed to the multiple cutter positions, layered milling can be achieved through the multiple cutter positions when the cutter head rotates, and meanwhile the rotation diameters of the multiple cutter positions can be finely adjusted; the technical problem that the width direction needs to be machined twice when the rotation diameter of the milling cutter is slightly smaller than the machining width is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, in particular to a large-depth insert end mill with adjustable tooth depth and a tooth depth adjustment method. Background Art

[0002] Milling is the most common machining type in machining. It uses the rotation of the milling cutter as the main motion and the motion of the milling cutter or the workpiece as the feed motion to achieve the machining method of cutting. Milling can machine planes, steps, grooves, holes, and various curved surfaces, etc., and is especially good at machining various planes. When machining a plane, an end mill is generally used. Because the end mill can machine a relatively wide surface with one feed of its large diameter rotation, it is quite efficient when machining a plane. However, this efficiency is generally reflected in the width of the plane machining, and in the depth direction, it still needs to be cut layer by layer step by step. If the machining allowance in the depth direction of the plane is too large, it is necessary to perform multiple layer feeds for machining, which results in low plane machining efficiency. At the same time, due to multiple feeds of the machine tool, the wear times of the lead screw and the guide rail increase. If the end mill can perform large-depth milling, it will surely greatly reduce the number of feeds and improve the efficiency of plane milling, and can also effectively reduce the wear of the lead screw and the guide rail of the machine tool, which has a positive significance for improving production efficiency and protecting the accuracy of the machine tool. In addition, the current end mill has a fixed rotation diameter. When the machining width is slightly larger than the rotation diameter of the milling cutter, the width direction has to be machined in two times, and the machining efficiency will surely be greatly reduced. In view of this, it is very important to develop an end mill with large-depth machining and a fine-tunable rotation diameter to improve the efficiency of plane machining. Summary of the Invention

[0003] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. In this part, as well as in the abstract and the title of the specification of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above and / or existing problems in plane machining, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a large-depth insert end mill with adjustable tooth depth and a tooth depth adjustment method. The present invention adopts a multi-tool position adjustable design. In the working condition, the multi-tool positions are adjusted to a stepped distribution, and the total machining allowance of the plane machining is distributed to multiple tool positions. When the cutter head rotates, the multi-tool positions can achieve layer milling, and thus can achieve large-depth machining of the plane. At the same time, the rotation diameters of the multi-tool positions can all be finely adjusted, solving the technical problem that when the rotation diameter of the milling cutter is slightly smaller than the machining width, the width direction needs to be machined in two times. To solve the above technical problems, the present invention provides the following technical solutions: A large cutting depth insert type face milling cutter with adjustable tooth depth, including, A tool connecting seat, on the outer periphery of the lower part of the tool connecting seat, several sliding grooves are arranged. At the center of the upper end of the tool connecting seat, a circular upper connecting counterbore is opened. At the center of the lower end of the tool connecting seat, a circular lower connecting counterbore is opened. On the tool connecting seat between the upper connecting counterbore and the lower connecting counterbore, a connecting hole is opened; A tool position adjusting assembly, including a slider that is just slidably connected to the tool connecting seat through the sliding groove. A tool rod with adjustable height is connected to the slider. A tool body is fixedly connected to the tool rod below the tool connecting seat.

[0006] As a preferred solution of a large cutting depth insert type face milling cutter with adjustable tooth depth in the present invention, wherein: At one end of the slider opposite to the lower connecting groove, a diameter adjusting hole is opened. On the tool connecting seat on the outer periphery of the lower connecting counterbore, several first stepped holes corresponding to the sliding grooves one by one are arranged. The tool connecting seat is rotationally connected with a diameter adjusting rod through the first stepped holes. A first gland is sleeved on the diameter adjusting rod. The first gland can be fixedly connected to the tool connecting seat inside the sliding groove and can press the diameter adjusting rod against the tool connecting seat.

[0007] As a preferred solution of a large cutting depth insert type face milling cutter with adjustable tooth depth in the present invention, wherein: A through hole is opened on the slider. A tool position hole is opened on the slider below the through hole. The slider is rotationally connected with a depth adjusting rod through the through hole. The slider is slidably connected with a tool rod through the tool position hole. At the upper end of the tool rod, a tooth depth adjusting hole is opened. One end of the depth adjusting rod extending downward into the tool position hole is threadedly connected to the tool rod through the tooth depth adjusting hole. On the outer periphery of the tool rod above the tool body, a first connecting thread is provided. When the tool rod is adjusted to the required height, the tool rod is threadedly connected with a locknut through the first connecting thread, and the locknut presses against the lower side of the tool connecting seat.

[0008] As a preferred solution of a large cutting depth insert type face milling cutter with adjustable tooth depth in the present invention, wherein: A second stepped hole is opened on the slider above the through hole. A limiting step is fixed on the depth adjusting rod. After the depth adjusting rod is inserted into the slider through the through hole, the lower side of the limiting step abuts against the slider below the second stepped hole. A second gland is sleeved on the slider above the limiting step. The second gland can be fixedly connected to the upper end of the slider and press the limiting step against the slider.

[0009] As another object of the present invention, the present invention provides a tooth depth adjusting method for a large cutting depth insert type face milling cutter with adjustable tooth depth, wherein: The method includes the following steps, S1. According to the processing dimension requirements of the drawing, and then according to the actually measured dimensions of the workpiece blank, determine the total machining allowance of the plane; S2. Allocate the total machining allowance determined to n tool positions. Then, the allowance value to be cut for each tool position is the total allowance divided by n. S3. Adjust the circumgyration radius of each tooth of this face milling cutter. Use a wrench to rotate the diameter adjusting rod so that the positions of several sliders are at different radial positions. Taking the position R1 of the first slider as the reference, the radii of the remaining sliders in the machining direction are successively increased by a set distance. When the tool connecting seat rotates, each slider is arranged in a set stepped layout. S4. Use the tooth depth adjusting device to adjust the tooth depth of each tooth of this face milling cutter.

[0010] As a preferred embodiment of the tooth depth adjusting method in the present invention, wherein: the tooth depth adjusting device includes a chassis. A support rod is fixed at the center of the chassis. A support plate is fixed on the support rod. A number of tooth depth adjusting screw holes corresponding to the tool bars one by one are arranged on the support plate. The support plate is threadedly connected with a tool setting column through the tooth depth adjusting screw holes. An adjusting sink is opened at the lower end of the tool setting column. A tooth depth adjusting screw hole is opened at the top of the support rod.

[0011] As a preferred embodiment of the tooth depth adjusting method in the present invention, wherein: step S4 is specifically as follows. S401. First, place the tooth depth adjusting device on the workbench, use a pressing plate to press the chassis to fix the tooth depth adjusting device on the workbench. Use a wrench and the adjusting sink on the bottom surface of the tool setting column to screw several tool setting columns into several tooth depth adjusting screw holes of the support plate. Select one of the tool setting columns as the reference. Use a height gauge to limit the position and rotate the upper plane of the reference tool setting column to the ideal height. Then, allocate the previously calculated machining allowance to the remaining several tool setting columns. Use a height gauge to limit the position and successively add the height values of the allocated machining allowance to the other three tool setting columns and rotate them to the ideal height. S402. Place several tool bars installed with tools into the tool position holes, pay attention to the installation directions of each tool bar, and make the tool bodies on each tool bar be in the cutting direction of the rotation of the tool connecting seat. Then, use the depth adjusting rod on the back to screw the tool bar into the ideal position in the tool position hole. S403. Sleeve the lower connecting sink under the tool connecting seat onto the support rod. Pass a tooth depth fastening screw through the connecting hole on the tool connecting seat and screw the tooth depth fastening screw into the tooth depth adjusting screw hole at the top of the support rod. By visual inspection and manual rotation, make the tool position hole with a radius of R1 be approximately coaxial with the lowest reference tool setting column. At this time, rotate the tooth depth fastening screw until it is tightened. At this time, the tool connecting seat is positioned and fastened with the tooth depth adjusting device. S404. Use a feeler gauge with a set thickness as a measuring tool, and slowly rotate the depth adjustment rod to slowly bring the tool body on the tool rod closer to the upper plane of the tool setting column until the feeler gauge cannot slide. At this time, the position of the tool body is the set thickness from the upper plane of the tool setting column. After each tool body is aligned in this way, the height of each tool body meets the requirements of the machining allowance, and the set thickness is equal to the machining allowance; S405. Rotate the locknut to fasten several tool rods; S406. Install the tool connecting seat with the tool body having each tooth depth adjusted to the BT tool sleeve, and then install the tool sleeve on the machine tool spindle (this is an existing technology and not an improvement point of the present application). Turn on the machine tool spindle, use the tool body on the tool position hole with a radius of R1 to face the upper plane of the workpiece, and then feed the total machining allowance to be processed.

[0012] As a preferred embodiment of the tooth depth adjustment method in the present invention, wherein: a first hexagonal groove for inserting a wrench is provided at one end of the diameter adjustment rod opposite to the lower connecting sunk groove. A plurality of first fixing holes are arranged on the first gland. A plurality of first threaded holes corresponding to the first fixing holes one by one are arranged on the tool connecting seat on the outer periphery of the first stepped hole. After the slider moves to the ideal position, use the first fastening screw to screw into the first fixing hole and the first threaded hole to press the first gland tightly on the diameter adjustment rod.

[0013] As a preferred embodiment of the tooth depth adjustment method in the present invention, wherein: a second hexagonal groove for inserting a wrench is provided at the upper end of the depth adjustment rod. A plurality of second fixing holes are arranged on the second gland. A plurality of second threaded holes corresponding to the second fixing holes one by one are arranged on the tool connecting seat on the outer periphery of the second stepped hole. After the tool rod is lifted or lowered to the ideal position, use the second fastening screw to screw into the second fixing hole and the second threaded hole to press the second gland tightly on the limiting step.

[0014] Compared with the prior art, the present invention has the following technical effects: 1. Adopt a multi-tool position adjustable design. During machining, the total machining allowance for plane machining is distributed to multiple tool positions. When the tool disc rotates, multi-tool positions can achieve layer milling, and thus large-depth milling of the plane can be realized; 2. The swing diameters of multiple tool positions can be finely adjusted to cope with the situation where the swing diameter of the milling cutter is slightly smaller than the machining width; 3. In cooperation with the tooth depth adjustment device, the tool setting column can freely adjust its height according to the different machining allowances of each tooth, fully meeting the needs of adjusting the height of the tool body in each tool position; 4. Using the present invention for machining can greatly reduce the number of machining feeds, improve the efficiency of plane milling, effectively reduce the wear of the machine tool lead screw and guide rail, and has a positive significance for improving production efficiency and protecting the accuracy of the machine tool. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them: Figure 1 is a cross-sectional view of the present invention.

[0016] Figure 2 is Figure 1 a partial enlarged view of part A in

[0017] Figure 3 is the front view of the tool connecting seat in the present invention.

[0018] Figure 4 is the top view of the present invention.

[0019] Figure 5 is Figure 4 a partial enlarged view of part B in

[0020] Figure 6 is Figure 5 the end view of section C-C in

[0021] Figure 7 is the bottom view of the slider in the present invention.

[0022] Figure 8 is the left view of the slider in the present invention.

[0023] Figure 9 is the three-dimensional structure diagram when the tool body is fixedly connected to the tool bar in the present invention.

[0024] Figure 10 is the three-dimensional structure diagram of the tooth depth adjusting rod in the present invention.

[0025] Figure 11 is the schematic diagram of adjusting 4 sliders into a stepped shape in the present invention.

[0026] Figure 12 is the front view of the tooth depth adjusting device in the present invention.

[0027] Figure 13 is the top view of the tooth depth adjusting device in the present invention.

[0028] Figure 14 is the schematic diagram when adjusting the tooth depth.

[0029] Figure 15 is the schematic diagram of large cutting depth processing of this face milling cutter.

[0030] In the figure, 1 is a tool connecting seat, 101 is a lower connecting sink, 102 is a transmission slot, 103 is an upper connecting sink, 104 is a connecting hole, 105 is a sliding slot, 106 is a first stepped hole, 107 is a first threaded hole, 2 is a tool position adjusting assembly, 201 is a tool shank, 201-1 is a tooth depth adjusting hole, 202 is a slider, 202-1 is a through hole, 202 is a slider, 202-1 is a through hole, 202-2 is a tool position hole, 202-3 is a second threaded hole, 202-4 is a second stepped hole, 202-5 is a diameter adjusting hole, 203 is a diameter adjusting rod, 203-1 is a first hexagonal slot, 204 is a second fastening screw, 205 is a second gland, 206 is a depth adjusting rod, 206-1 is a second hexagonal slot, 206-2 is a limiting step, 207 is a jam nut, 208 is a tool body, 3 is a tooth depth adjusting device, 301 is a support rod, 301-1 is a tooth depth adjusting screw hole, 302 is a chassis, 303 is a support plate, 304 is a tool setting post, 304-1 is an adjusting sink, 4 is a workpiece, and 5 is a tooth depth fastening screw. Detailed implementation manners

[0031] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0032] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0034] Embodiment 1 Referring to Figures 1 to 15 , this embodiment provides a large cutting depth insert face milling cutter with adjustable tooth depth, which can achieve large cutting depth milling of the upper plane of the workpiece 4. During milling, the number of machining feed times can be significantly reduced, and the plane milling efficiency is high.

[0035] A large cutting depth insert face milling cutter with adjustable tooth depth includes a tool connecting seat 1, and a tool position adjusting assembly 2 for adjusting the position of the tool body 208 is connected to the tool connecting seat 1.

[0036] Specifically, a plurality of sliding grooves 105 are arranged on the outer periphery of the lower part of the tool connecting seat 1. A circular upper connecting counterbore 103 is opened at the center of the upper end of the tool connecting seat 1. Transmission grooves 102 are respectively opened on the tool connecting seat 1 at both ends of the upper connecting counterbore 103. A transmission block on the BT tool sleeve (which is a prior art) is connected to the tool connecting seat 1 through the transmission groove 102. A circular lower connecting counterbore 101 is opened at the center of the lower end of the tool connecting seat 1. A connecting hole 104 is opened on the tool connecting seat 1 between the upper connecting counterbore 103 and the lower connecting counterbore 101. The tool position adjusting assembly 2 includes a slider 202 slidably connected to the tool connecting seat 1 just through the sliding groove 105. A tool rod 201 with adjustable height is connected to the slider 202. A tool body 208 is fixedly connected to the tool rod 201 below the tool connecting seat 1.

[0037] Adjust the position of the tool body 208 in the diameter direction according to the machining width, so that the slider 202 slides in the sliding groove 105. The slider 202 drives the tool body 208 to move in the radial direction through the tool rod 201. When the tool body 208 moves to the ideal position, stop the slider 202 from moving. The position of the slider 202 is fixed in the radial direction. Adjust the height of the tool rod 201 according to the milling depth. The tool rod 201 drives the tool body 208 to move in the height direction. When the height of the tool body 208 is adjusted to the ideal position, stop the tool rod 201 from moving. The position of the tool rod 201 is fixed in the height direction.

[0038] Specifically, a diameter adjustment hole 202-5 is opened at one end of the slider 202 opposite to the lower connecting groove. A plurality of first stepped holes 106 corresponding to the sliding grooves 105 one by one are arranged on the tool connecting seat 1 on the outer periphery of the lower connecting counterbore 101. A diameter adjustment rod 203 is rotatably connected to the tool connecting seat 1 through the first stepped holes 106. A diameter adjustment hole 202-5 is opened on one side of the slider 202 opposite to the first stepped hole 106. The diameter adjustment rod 203 is threadedly connected to the slider 202 through the diameter adjustment hole 202-5. A first hexagonal groove 203-1 for inserting a wrench is opened at one end of the diameter adjustment rod 203 opposite to the lower connecting counterbore 101. A first gland is sleeved on the diameter adjustment rod 203. The first gland can be fixedly connected to the tool connecting seat 1 inside the sliding groove 105 and can press the diameter adjustment rod 203 against the tool connecting seat 1. The structure for realizing the fixed connection between the second gland 205 and the tool connecting seat 1 is that a plurality of first fixing holes are arranged on the first gland. A plurality of first threaded holes 107 corresponding to the first fixing holes one by one are arranged on the tool connecting seat 1 on the outer periphery of the first stepped hole 106. After the slider 202 moves to the ideal position, use the first fastening screw to screw into the first fixing hole and the first threaded hole 107 to press the first gland against the diameter adjustment rod 203.

[0039] Insert the wrench into the first hexagonal slot 203-1, drive the diameter adjusting rod 203 to rotate through the wrench, the diameter adjusting rod 203 drives the slider 202 to slide horizontally in the radial direction, the slider 202 drives the tool body 208 to move through the tool rod 201. When the radial position of the tool body 208 is adjusted to the ideal position, stop rotating the wrench, and use the first fastening screw to screw into the first fixing hole and the first threaded hole 107 in sequence to press the first gland on the diameter adjusting rod 203 to fix the diameter adjusting rod 203.

[0040] Specifically, a through hole 202-1 is formed in the slider 202, and a tool position hole 202-2 is formed in the slider 202 below the through hole 202-1. The slider 202 is rotationally connected with a depth adjusting rod 206 through the through hole 202-1. The upper end of the depth adjusting rod 206 is provided with a second hexagonal slot 206-1 for facilitating the insertion of the wrench. The slider 202 is slidably connected with a tool rod 201 through the tool position hole 202-2. One end of the tool rod 201 facing upward is provided with a tooth depth adjusting hole 201-1. One end of the depth adjusting rod 206 extending downward into the tool position hole 202-2 is threadedly connected to the tool rod 201 through the tooth depth adjusting hole 201-1. The outer periphery of the tool rod 201 above the tool body 208 has a first connecting thread. When the tool rod 201 is adjusted to the required height, the tool rod 201 is threadedly connected with a locknut 207 through the first connecting thread, and the locknut 207 is pressed against the lower side of the tool connecting seat 1. A second stepped hole 202-4 is formed in the slider 202 above the through hole 202-1. A limiting step 206-2 is fixed on the depth adjusting rod 206. After the depth adjusting rod 206 is inserted into the slider 202 through the through hole 202-1, the lower side of the limiting step 206-2 abuts against the slider 202 below the lower side of the second stepped hole 202-4. A second gland 205 is sleeved on the slider 202 above the limiting step 206-2. The second gland 205 can be fixedly connected to the upper end of the slider 202 and press the limiting step 206-2 on the slider 202. The structure for realizing the fixed connection between the second gland 205 and the slider 202 is that a plurality of second fixing holes are arranged on the second gland 205, and a plurality of second threaded holes 202-3 corresponding to the second fixing holes one by one are arranged on the tool connecting seat 1 outside the second stepped hole 202-4. When the tool rod 201 is lifted and lowered to the ideal position, use the second fastening screw 204 to screw into the second fixing hole and the second threaded hole 202-3 to press the second gland 205 on the limiting step 206-2.

[0041] When it is necessary to adjust the position of the tool body 208 in the height direction, insert a wrench into the second hexagonal groove 206-1, rotate the wrench to drive the depth adjustment rod 206 to rotate. The depth adjustment rod 206 drives the tool bar 201 to slide in the tool position hole 202-2, and the tool bar 201 drives the tool body 208 to move. When the tool body 208 is lifted or lowered to the appropriate height, stop rotating the wrench. Then, use the second fastening screw 204 to screw into the second fixing hole and the corresponding second threaded hole 202-3 in turn, so that the second gland 205 is pressed against the limiting step to fix the depth adjustment rod 206. Screw the union nut 207 onto the tool bar 201 above the tool body 208, and tighten the union nut 207 on the lower side of the tool connection seat 1 to further fix the tool bar 201.

[0042] Through the above structure, the position fine adjustment on the swing diameter of each tool position and the position adjustment in the height direction of each tool position are realized, respectively solving the technical problems in the prior art that the machining width cannot adapt to the swing diameter of the milling cutter and multiple cuts are required to achieve multi-layer cutting.

[0043] Embodiment 2 Refer to Figures 1 to 15 , this embodiment is based on Embodiment 1. The difference from Embodiment 1 is that this embodiment provides a manufacturing method for a large cutting depth insert face milling cutter with adjustable tooth depth, which can further realize large cutting depth milling of the plane.

[0044] The present invention provides a tooth depth adjustment method for a large cutting depth insert face milling cutter with adjustable tooth depth, including the following steps. S1. According to the machining dimension requirements of the drawing and the actual measured dimensions of the workpiece 4 blank, determine the total machining allowance for the plane. S2. Allocate the determined total machining allowance to n tool positions, and the allowance value to be cut and processed for each tool position is the total allowance divided by n. S3. Adjust the swing radius of each tooth of this face milling cutter. Insert a wrench into the first hexagonal groove 203-1 and rotate the diameter adjustment rod 203 to place the positions of several sliders 202 at different radial positions. Fix the first gland, and the first gland presses the diameter adjustment rod 203 against the tool connection seat 1 to realize the position adjustment of the sliders 202 in the diameter direction. Taking the position R1 of the first slider 202 as the reference, the radius of the remaining sliders 202 in the machining direction is increased by a set distance in turn. When the tool connection seat 1 rotates, the sliders 202 are arranged in a set stepped pattern. S4. Use the tooth depth adjustment device 3 to adjust the tooth depth of each tooth of the face milling cutter. The tooth depth adjustment device 3 includes a chassis 302. A support rod 301 is fixed at the center of the chassis 302. A support plate 303 is fixed on the support rod 301. A number of tooth depth adjustment screw holes corresponding to the tool shanks 201 one by one are arranged on the support plate 303. A tool setting column 304 is threadedly connected to the support plate 303 through the tooth depth adjustment screw holes. An adjustment sink 304-1 is opened at the lower end of the tool setting column 304. A tooth depth adjustment screw hole 301-1 is opened at the top of the support rod 301.

[0045] Step S4 is specifically as follows. S401. First, place the tooth depth adjustment device 3 on the workbench, use a pressing plate to press the chassis 302 to fix the tooth depth adjustment device 3 on the workbench. Insert a wrench into the adjustment sink 304-1 on the bottom surface of the tool setting column 304 and screw a number of tool setting columns 304 into a number of tooth depth adjustment screw holes on the support plate 303. Select one of the tool setting columns 304 as a reference, use a height gauge to limit the position and rotate the upper plane of the reference tool setting column 304 to the ideal height. Then distribute the previously calculated machining allowance to the remaining several tool setting columns 304. Use a height gauge to limit the position and respectively add the height values of the distributed machining allowance to the remaining three tool setting columns 304 in turn and rotate them to the ideal height. S402. Place a number of tool shanks 201 installed with cutters into the tool position holes 202-2, pay attention to the installation directions of the respective tool shanks 201, and make the cutter bodies 208 on the respective tool shanks 201 be in the cutting direction of the rotation of the tool connection seat 1. Then use the depth adjustment rod 206 on the back to screw the tool shank 201 into the ideal position in the tool position hole 202-2. S403. Sleeve the lower connection sink 101 below the tool connection seat 1 onto the support rod 301. Pass a tooth depth fastening screw 5 through the connection hole 104 on the tool connection seat 1 and screw the tooth depth fastening screw 5 into the tooth depth adjustment screw hole 301-1 at the top of the support rod 301. By visual inspection and manual rotation, make the tool position hole 202-2 with a radius of R1 be approximately coaxial with the lowest reference tool setting column 304. At this time, rotate the tooth depth fastening screw 5 until it is tightened. At this time, the tool connection seat 1 is positioned and fastened with the tooth depth adjustment device 3. S404. Use a feeler gauge with a set thickness as a measuring tool, slowly rotate the depth adjustment rod 206 to make the cutter body 208 on the tool shank 201 slowly approach the upper plane of the tool setting column 304 until the feeler gauge cannot slide. At this time, the position of the cutter body 208 is at a set thickness from the upper plane of the tool setting column 304. When each cutter body 208 is tool set in this way, the heights of each cutter body 208 meet the machining allowance requirements, and the set thickness is equal to the machining allowance. S405. Rotate the locknut 207 to fasten a number of tool shanks 201. S406. Install the tool connecting seat 1 of the tool body 208 with each tooth depth adjusted onto the BT tool sleeve, then install the tool sleeve onto the machine tool spindle. Turn on the machine tool spindle, and use the tool body 208 on the tool position hole 202-2 with a radius of R1 to machine the upper plane of the workpiece 4, and then feed the total machining allowance to be processed.

[0046] In this application, preferably 4 tool positions are arranged on the tool connecting seat 1. If the total machining allowance is set to 0.8 mm, then the machining allowance for each tool position is 0.2 mm. In this case, the thickness of the feeler gauge is 0.2 mm. In step S3, when the set distance is preferably 5 mm, the radii of the remaining sliders 202 in the machining direction are increased by 5 mm in sequence, that is, R1 + 5 = R2, R2 + 5 = R3, R3 + 5 = R4, as Figure 11 shown; when the tool connecting seat 1 rotates, the 4 sliders 202 are arranged in a stepped shape, as Figure 15 shown.

[0047] When this face milling cutter performs large cutting depth face milling machining, when the machining width is slightly larger than the milling cutter's circumgyration diameter, the positions of the 4 sliders 202 can be adjusted through the diameter adjusting rod 203 for fine adjustment on the circumgyration diameter to cope with the situation where the milling cutter's circumgyration diameter is slightly smaller than the machining width. In actual implementation, the number of tool positions can be set according to the number of cuts actually required, the set distance can also be other distances, and the positions of the remaining sliders 202 are set according to actual needs.

[0048] Using the method of the present invention, the tooth depth can be adjusted according to the milling depth, and the positions of each tool position in the diameter direction can be adjusted according to the machining width to cope with the situation where the milling cutter's circumgyration diameter is slightly smaller than the machining width, realizing one-time layered cutting of the upper plane of the workpiece 4, and having high face milling efficiency.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A large cutting depth face milling cutter with adjustable tooth depth, characterized in that: These include, A tool connection seat (1), wherein a plurality of slide grooves (105) are arranged on the outer periphery of the lower part of the tool connection seat (1), a circular upper connection groove (103) is opened at the center of the upper end of the tool connection seat (1), a circular lower connection groove (101) is opened at the center of the lower end of the tool connection seat (1), and a connection hole (104) is opened on the tool connection seat (1) between the upper connection groove (103) and the lower connection groove (101); The tool position adjustment assembly (2) comprises a sliding block (202) which is slidably connected to the tool connection seat (1) via a sliding groove (105); a height-adjustable tool rod (201) is connected to the sliding block (202); and a tool body (208) is fixedly connected to the tool rod (201) below the tool connection seat (1).

2. A large cutting depth face milling cutter with an adjustable tooth depth as claimed in claim 1, characterized in that: A diameter adjustment hole (202-5) is formed at one end of the sliding block (202) opposite to the lower connecting groove; a plurality of first step holes (106) corresponding to the sliding groove (105) are arranged on the tool connecting seat (1) on the outer periphery of the lower connecting groove (101); the tool connecting seat (1) is rotatably connected to a diameter adjustment rod (203) via the first step holes (106); a first pressure cover is sleeved on the diameter adjustment rod (203); the first pressure cover can be fixedly connected to the tool connecting seat (1) on the inner side of the sliding groove (105) and can be pressed against the tool connecting seat (1) by the diameter adjustment rod (203).

3. A large cutting depth face milling cutter with an adjustable tooth depth as claimed in claim 2, characterized in that: The slider (202) is provided with a through hole (202-1), a knife position hole (202-2) is provided on the slider (202) below the through hole (202-1), the slider (202) is rotatably connected to a depth adjustment rod (206) through the through hole (202-1), the slider (202) is slidably connected to a knife rod (201) through the knife position hole (202-2), a tooth depth adjustment hole (201-1) is provided on an upward end of the knife rod (201), and the depth adjustment rod (206) is rotatably connected to a knife rod (201) through the knife position hole (202-2). One end of the section rod (206) extending downward into the tool position hole (202-2) is threadedly connected to the tool rod (201) via the tooth depth adjustment hole (201-1); the outer periphery of the tool rod (201) above the tool body (208) has a first connecting thread; when the depth of the tool rod (201) is adjusted to a required height, the tool rod (201) is threadedly connected to a cap (207) via the first connecting thread, and the cap (207) is pressed tightly against the lower side of the tool connection seat (1).

4. A large cutting depth face milling cutter with an adjustable tooth depth as claimed in claim 3, characterized in that: A second step hole (202-4) is formed on the slider (202) on the upper side of the through hole (202-1), and a limiting step (206-2) is fixed on the depth adjustment rod (206). After the depth adjustment rod (206) is inserted into the slider (202) through the through hole (202-1), the lower side of the limiting step (206-2) abuts against the slider (202) on the lower side of the second step hole (202-4), and the slider (202) on the upper side of the limiting step (206-2) is sleeved with a second pressure cover (205), and the second pressure cover (205) can be fixedly connected to the upper end of the slider (202) and press the limiting step (206-2) onto the slider (202).

5. A method for adjusting the tooth depth of a large cutting depth face milling cutter with an adjustable tooth depth as claimed in claim 4, characterized in that: The following steps are included: S1. Determine the total machining allowance of the plane according to the machining dimension requirements of the drawing and the actual measured dimensions of the workpiece (4); S2. Allocate the determined total machining allowance to n tool positions, and the allowance value required for cutting at each tool position is the total allowance divided by n; S3, adjusting the turning radius of each tooth of the face milling cutter, using a wrench to rotate the diameter adjustment rod (203), so that the positions of the plurality of sliders (202) are placed at different radial positions, taking the position R1 of the first slider (202) as a reference, the radii of the remaining sliders (202) in the processing direction are sequentially increased by a set distance, and when the tool connecting seat (1) rotates, the sliders (202) are arranged in a set step shape; S4. Use the tooth depth adjustment device (3) to adjust the tooth depth of each tooth of the face milling cutter.

6. The tooth depth adjustment method according to claim 5, characterized in that: The tooth depth adjustment device (3) comprises a chassis (302), a support rod (301) is fixed at the center of the chassis (302), a support plate (303) is fixed on the support rod (301), a plurality of tooth depth adjustment screw holes corresponding to the knife rod (201) are arranged on the support plate (303), a tool column (304) is threadedly connected to the support plate (303) through the tooth depth adjustment screw holes, an adjustment groove (304-1) is provided at the lower end of the tool column (304), and a tooth depth adjustment screw hole (301-1) is provided at the top of the support rod (301).

7. The tooth depth adjustment method according to claim 6, characterized in that: Step S4 specifically includes: S401, first put the tooth depth adjustment device (3) on the workbench, use the pressure plate to press the chassis (302) to fix the tooth depth adjustment device (3) on the workbench, use the wrench and the adjustment groove (304-1) on the bottom surface of the tool setting column (304) to screw a plurality of tool setting columns (304) into a plurality of tooth depth adjustment screw holes of the support plate (303), select one of the tool setting columns (304) as the reference, use the height gauge limiter to rotate the upper plane of the reference tool setting column (304) to the ideal height, then distribute the previously calculated machining allowances to the remaining plurality of tool setting columns (304), use the height gauge limiter to sequentially add the height values ​​of the distributed machining allowances to the remaining three tool setting columns (304) and rotate them to the ideal heights; S402, placing a plurality of tool rods (201) with tools installed thereon into the tool position holes (202-2), paying attention to the installation direction of each tool rod (201), placing the tool body (208) on each tool rod (201) in the cutting direction of the tool connection seat (1) when it rotates, and then using the depth adjustment rod (206) on the back to rotate the tool rod (201) into the tool position hole (202-2) to an ideal position; S403, insert the lower connection groove (101) below the tool connection seat (1) into the support rod (301), use the tooth depth tightening screw (5) to pass through the connection hole (104) on the tool connection seat (1), screw the tooth depth tightening screw (5) into the tooth depth adjustment screw hole (301-1) at the top of the support rod (301), visually inspect and manually rotate to make the tool position hole (202-2) with a radius of R1 roughly coaxial with the lowest reference tool column (304), at this time, rotate the tooth depth tightening screw (5) until it is tightened, at this time, the tool connection seat (1) and the tooth depth adjustment device (3) are positioned and tightened; S404, using a feeler gauge of set thickness as a gauge, slowly rotate the depth adjustment rod (206) to make the tool body (208) on the tool rod (201) slowly approach the upper plane of the tool setting column (304) until the feeler gauge cannot slide. At this time, the position of the tool body (208) is the set thickness from the upper plane of the tool setting column (304). When all tool bodies (208) are aligned in this way, the height of each tool body (208) meets the machining allowance requirement, and the set thickness is equal to the machining allowance; S405, rotating the cap (207) to tighten the plurality of knife bars (201); S406, install the tool connecting seat (1) with the tool body (208) with each tooth depth adjusted on the BT tool sleeve, then install the tool sleeve on the machine tool spindle, turn on the machine tool spindle, use the tool body (208) on the tool hole (202-2) with a radius of R1 to align the upper plane of the workpiece (4), and then feed the total allowance to be processed.

8. The tooth depth adjustment method according to claim 5, characterized in that: The end of the diameter adjustment rod (203) opposite to the lower connecting groove (101) is provided with a first hexagonal groove (203-1) for facilitating the insertion of a wrench, a first pressure cover is provided with a plurality of first fixing holes, and a tool connection seat (1) on the periphery of the first step hole (106) is provided with a plurality of first threaded holes (107) corresponding to the first fixing holes one by one. When the slider (202) is moved to an ideal position, a first fastening screw is screwed into the first fixing hole and the first threaded hole (107) to press the first pressure cover onto the diameter adjustment rod (203).

9. The tooth depth adjustment method according to claim 5, characterized in that: The upper end of the depth adjustment rod (206) is provided with a second hexagonal slot (206-1) for convenient insertion of a wrench, a plurality of second fixing holes are arranged on the second pressure cover (205), and a plurality of second threaded holes (202-3) corresponding to the second fixing holes are arranged on the tool connecting seat (1) on the periphery of the second step hole (202-4). When the tool rod (201) is raised or lowered to an ideal position, a second fastening screw (204) is screwed into the second fixing hole and the second threaded hole (202-3) to press the second pressure cover (205) onto the limiting step (206-2).

Images