Novel special R-arc machine clamp type cutter

By setting up an R arc machining part on the edge of the blade to achieve the R arc machining method of drilling, and using multiple R arc machining parts on the flip and optimizing the tool structure, the existing organic clamp R arc tool has been solved, and efficient and low-cost R arc machining on the orifice is achieved.

CN223185599UActive Publication Date: 2025-08-05HIMILE MECHANICAL MFG
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Patent Information

Application Number
CN202422422534.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-09
Publication Date
2025-08-05
Estimated Expiration
2034-10-09

AI Technical Summary

Technical Problem

The existing organic clamp R arc tools have low processing efficiency, poor stability, and high cost, so they cannot be further improved by increasing the linear speed and feed parameters.

Method used

The R-arc machining part at the edge of the blade is used to drill and process the outer R-arc machining of the orifice, and multiple R-arc machining parts are used to flip the surface to optimize the size of the cutter head and tool rod to improve rigidity, and set up internal cold passages and side-fixed edges to improve stability.

Benefits of technology

Improve processing efficiency and stability, reduce blade and processing costs, and replace milling by drilling and processing, enhance the rigidity and machining accuracy of tool use.

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Abstract

The utility model discloses a novel special R-arc machine clamp type cutter, which belongs to the technical field of cutting equipment and comprises a plurality of blades, each blade is provided with a first matching surface and a second matching surface, the edge of each blade is provided with a plurality of R-arc processing parts, and two ends of each R-arc processing part respectively extend to the first matching surface and the second matching surface. A plurality of chip removal parts in one-to-one correspondence with the blades are arranged at one end of the tool bit, clamping grooves matched with the blades in shape are formed in the chip removal parts, and the blades can be fixed in the clamping grooves; when the blade is fixed in the clamping groove, at least one R arc machining part is located outside the tool bit. According to the utility model, the R arc processing part at the edge of the blade can be used for processing the outer R arc of the orifice in a drilling mode, so that the processing efficiency is higher, and the processing stability is better; the multiple R-arc machining parts on the blade can be used in sequence, each R-arc machining part can be used twice in a turn-over mode, and the use cost and the machining cost of the blade are greatly reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of cutting equipment, in particular to a new special R-arc machine clamping tool. Background Art

[0002] A machine-clamped tool is a tool in which the blade is fixed to the tool holder by mechanical clamping. When the blade becomes blunt, it can be directly replaced with a new sharpened blade.

[0003] At present, the main processing method for the R-arc outside the hole mouth is milling, which has low processing efficiency and high processing cost; the existing machine-clamped R-arc tools on the market are usually general-purpose milling tools, and their processing parameters have reached the maximum limit that the tool can bear, and the linear speed and feed cannot be further increased, thereby unable to further improve the processing efficiency; in addition, the length of the tool shank is long, which affects the rigidity of the tool and the processing stability is also poor.

[0004] Therefore, the research and development of a new type of special R-arc machine-clamped tool that can replace milling with drilling processing with better processing efficiency and processing stability, with a more optimized structure and lower processing cost is an urgent problem to be solved at this stage. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a new type of special R-arc machine-clamped tool, which utilizes the R-arc processing part at the edge of the blade to realize the R-arc processing outside the hole by drilling, with higher processing efficiency and better processing stability; multiple R-arc processing parts on the blade can be used in sequence, and each R-arc processing part can be used twice by turning it over, which greatly reduces the use cost and processing cost of the blade.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] The utility model provides a new type of special R-arc machine clamping tool, comprising:

[0008] A plurality of blades, each having a first mating surface and a second mating surface, wherein a plurality of R-arc processing portions are provided on the edge of the blade, and two ends of the R-arc processing portions extend to the first mating surface and the second mating surface respectively;

[0009] A cutter head, wherein one end of the cutter head is provided with a plurality of chip removal parts corresponding one to one with the blades, and the chip removal parts are provided with clamping grooves matching the shapes of the blades, and the blades can be fixed in the clamping grooves; when the blades are fixed in the clamping grooves, at least one of the R-arc processing parts is located outside the cutter head.

[0010] As a preferred technical solution, it further comprises a cutter rod, and one end of the cutter head away from the blade is fixedly connected to the cutter rod.

[0011] As a preferred technical solution, a side fixed edge is provided at one end of the cutter rod away from the cutter head.

[0012] As a preferred technical solution, the diameter of the cutter rod is smaller than the diameter of the cutter head;

[0013] And / or, an empty knife groove is provided at one end of the knife rod close to the knife head;

[0014] And / or, the tool bar has an internal cooling channel;

[0015] And / or, the length of the knife bar is set to 80 mm, and the length of the side fixed edge is set to 60 mm.

[0016] As a preferred technical solution, when the blade is fixed in the clamping groove, the blade is loosely fitted with the clamping groove; one of the first fitting surface and the second fitting surface abuts against the bottom wall of the clamping groove, and the other is arranged away from the clamping groove.

[0017] As a preferred technical solution, the blade is plate-shaped, and the first mating surface and the second mating surface are parallel to each other;

[0018] And / or, the first mating surface and the second mating surface each have a plurality of edges corresponding one-to-one to the R-arc processed portions;

[0019] And / or, the first mating surface and the second mating surface are both square-shaped.

[0020] As a preferred technical solution, the thickness of the blade is the same as the depth of the clamping groove;

[0021] and / or, a mounting hole is provided at the center of the blade;

[0022] And / or, the number of the blades is set to two.

[0023] As a preferred technical solution, the back angle of the blade is set to 0°.

[0024] As a preferred technical solution, the plurality of R-arc processing portions are evenly distributed along the circumference of the blade;

[0025] And / or, the R-arc processing portion is set to an R2 arc.

[0026] As a preferred technical solution, the length of the cutter head is set to 40 mm;

[0027] And / or, when the diameter of the hole to be processed is X, the minimum effective diameter of the cutter head is set to X, the maximum effective diameter of the cutter head is set to X+4mm, the maximum rotation diameter of the cutter head is set to X+10mm, and the diameter of the cutter head is set to X+9.8mm.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. The utility model drives the R-arc processing part at the edge of the blade to rotate by the cutter head, and can realize the processing of the R-arc outside the hole opening in the manner of drilling processing, which has higher processing efficiency and better processing stability; at the same time, when one R-arc processing part is worn, multiple R-arc processing parts can be used in sequence by changing the blade clamping angle, and each R-arc processing part on the blade can be used again by turning the blade over and clamping it, which greatly reduces the use cost of the blade and thus effectively reduces the processing cost.

[0030] 2. The utility model shortens the ineffective length and improves the rigidity of the tool shank by optimizing the size of the cutter head and the tool shank. It can not only replace milling with drilling to complete R-arc processing outside the hole, but also select higher feed parameters for processing, further improving processing efficiency. In addition, the tool shank is provided with a side fixed edge, which can make the cutter head fit the tool handle, better ensuring the stability of the tool during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a new type of special R-arc machine clamping tool of the utility model;

[0032] Figure 2 for Figure 1 A top view of the blade in FIG;

[0033] Figure 3 for Figure 2 Side view of

[0034] Figure 4 This is a schematic diagram of the assembly of the utility model and the knife handle.

[0035] In the figure: 1-blade, 11-first mating surface, 12-second mating surface, 13-R arc processing part, 14-mounting hole, 2-tool head, 21-chip removal part, 22-clamping groove, 3-tool rod, 31-side fixed edge, 32-empty tool groove, 4-tool handle. DETAILED DESCRIPTION

[0036] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0037] Please refer to Figures 1-4, which is an embodiment of a new type of special R-arc machine clamping tool provided by the utility model, includes a cutter head 2 and two blades 1. One end of the cutter head 2 is provided with two chip removal parts 21 corresponding to the blades 1 one by one, and the chip removal part 21 is used to discharge iron chips during the drilling process; the chip removal part 21 is provided with a clamping groove 22 matching the shape of the blade 1, and the blade 1 can be fixed in the clamping groove 22; the blade 1 has a first mating surface 11 and a second mating surface 12, and four R-arc processing parts 13 are provided at the edge of the blade 1, and the two ends of the R-arc processing part 13 extend to the first mating surface 11 and the second mating surface 12 respectively; when the blade 1 is fixed in the clamping groove 22, at least one R-arc processing part 13 is located outside the cutter head 2, and the blade 1 rotates and feeds with the cutter head 2, that is, the R-arc processing outside the hole mouth to be processed can be realized by drilling processing.

[0038] In other embodiments, the number of blades 1 may also be set to one, three, four or more, as long as the blades 1 rotate and feed along with the cutter head 2 to achieve R-arc processing outside the hole.

[0039] For details, please refer to Figure 2 and Figure 3 The blade 1 is plate-shaped, the first mating surface 11 and the second mating surface 12 are the same size and parallel to each other, the first mating surface 11 and the second mating surface 12 are both square-shaped, and the four R-arc processing parts 13 are respectively arranged at the four edges of the first mating surface 11 and the second mating surface 12 and are evenly distributed along the circumference of the blade 1. When an R-arc processing part 13 is worn, the clamping angle of the blade 1 can be easily adjusted to expose a new R-arc processing part 13 from the cutter head 2; in other embodiments, the first mating surface 11 and the second mating surface 12 can also be an equilateral triangle, a regular pentagon or a regular hexagon, and accordingly, the number of the R-arc processing parts 13 can be matched therewith.

[0040] For further information, please refer to Figure 1 and Figure 2 A mounting hole 14 is provided at the center of the blade 1, which facilitates fastening the blade 1 in the clamping groove 22 using screws and also allows for convenient adjustment of the clamping angle of the blade 1.

[0041] For clarification, please refer to Figure 1 and Figure 4When the blade 1 is fixed in the clamping groove 22, the edge of the blade 1 is matched with the side wall clearance of the clamping groove 22, and the clamping groove 22 can effectively position the blade 1; one of the first mating surface 11 and the second mating surface 12 is in contact with the bottom wall of the clamping groove 22, and the other is arranged away from the clamping groove 22. One end of the R-arc processing part 13 located outside the cutter head 2 is the use part of the R-arc processing outside the orifice; it should be noted that when the R-arc processing part 13 is in use, the length of the worn part of the R-arc processing part 13 should not be greater than half of the length of the R-arc processing part 13 between the first mating surface 11 and the second mating surface 12, that is, the length of the worn part of the R-arc processing part 13 cannot exceed half of the thickness of the blade 1, ensuring that after the cutter head 2 is turned over, the other end of the R-arc processing part 13 can still be used normally, which makes the 4 R-arc processing parts 13 in this embodiment can be used 8 times, greatly reducing the use cost of the blade 1; further, the thickness of the blade 1 should be the same as the depth of the clamping groove 22, which is convenient for confirming whether the blade 1 is clamped in place.

[0042] In order to ensure the machining surface quality of the R-arc outside the hole and the durability of the tool, the angle between the flank surface of the blade 1 and the cutting plane is preferably set to 0°.

[0043] In this embodiment, please refer to Figure 1 and Figure 4 The present invention should also include a tool rod 3, and the end of the cutter head 2 away from the blade 1 is fixedly connected to the tool rod 3, and the cutter head 2 can be conveniently fixedly connected to the tool handle 4 through the tool rod 3; further, the tool rod 3 should have an internal cooling channel. During the drilling process, the cutting fluid passes through the internal cooling channel and is sprayed at the blade 1, which can better control the iron chips and cool the blade 1, thereby improving the service life of the blade 1.

[0044] Based on the above examples, please refer to Figure 1 and Figure 4 A side fixing edge 31 is provided at one end of the tool rod 3 away from the tool head 2. The length of the side fixing edge 31 is preferably 20 mm shorter than the length of the tool rod 3, so that the tool rod 3 can be clamped by the side fixing tool handle 4. The side fixing edge 31 cooperates with the side fixing tool handle 4 to improve the clamping efficiency and stability.

[0045] For details, please refer to Figure 1 The diameter of the tool rod 3 should be smaller than the diameter of the cutter head 2, so that a step is formed between the cutter head 2 and the tool rod 3. The tool rod 3 will not affect the feeding and rotation of the cutter head 2. At the same time, the step can make the cutter head 2 fit with the tool handle 4, ensuring the stability of the tool during processing; an empty tool groove 32 is provided at the end of the tool rod 3 close to the cutter head 2, which can avoid interference between the tool rod 3 and the tool handle 4 when clamping.

[0046] For clarification, please refer to Figure 1When the diameter of the hole to be processed is X, the minimum effective diameter a of the cutter head 2 is preferably set to X, the maximum effective diameter b of the cutter head 2 is preferably set to X+4mm, the maximum rotation diameter c of the cutter head 2 is preferably set to X+10mm, and the diameter d of the cutter head 2 is preferably set to X+9.8mm.

[0047] In a specific embodiment, the R-arc processing portion 13 is set to an R2 arc, the diameter X of the hole to be processed is set to 30 mm, the minimum effective diameter a of the cutter head 2 is set to 30 mm, the maximum effective diameter b of the cutter head 2 is set to 34 mm, the maximum rotation diameter c of the cutter head 2 is set to 40 mm, the diameter d of the cutter head 2 is set to 39.8 mm, and the length of the cutter head 2 is set to 40 mm; the diameter of the tool rod 3 is set to 32 mm, the length of the tool rod 3 is set to 80 mm, and the length of the side fixed edge 31 is set to 60 mm; the sizes of the tool head 2 and the tool rod 3 are reasonable, the processing efficiency is high, and the processing stability is good; the specific clamping and processing process is as follows:

[0048] Clamping process:

[0049] Tool clamping: Blow clean the mating surface between the clamping groove 22 and the blade 1 to avoid the presence of foreign matter; confirm the direction of tool rotation (clockwise rotation), insert the blade 1 into the clamping groove 22, and tighten it with special screws; confirm whether the mating surface between the clamping groove 22 and the blade 1 is completely fitted together, and use a feeler gauge for auxiliary verification if necessary.

[0050] Clamping the tool arbor 3: Fit the side fixing edge 31 of the tool arbor 3 with the side fixing tool holder 4. After confirming the tool extension length according to the processing requirements, use the fastening screw to lock the tool arbor 3 and the side fixing tool holder 4. After the tool arbor 3 is clamped, the tool runout needs to be verified according to the processing accuracy.

[0051] Drilling process: rotate the spindle forward to drive the tool to rotate; feed the tool to the center of the hole to be processed and spray cutting fluid; switch the tool to chip feed and complete the R arc outside the hole mouth; return the tool and move it to the center of the next hole to be processed, and process the R arc outside the hole mouth of all holes to be processed in turn.

[0052] It should be noted that in other embodiments, the specifications of the R-arc processing part 13 can also be adjusted according to the specification requirements of the R-arc outside the orifice, such as the R-arc processing part 13 is set to R1.5 arc, R3 arc, etc.; accordingly, the specific dimensions of the tool head 2 and the tool rod 3 can also be adjusted accordingly.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A new type of special R-arc machine clamping tool, characterized in that: include: A plurality of blades (1), each having a first mating surface (11) and a second mating surface (12); a plurality of R-arc processing portions (13) are provided at the edge of each blade (1); two ends of each R-arc processing portion (13) extend to the first mating surface (11) and the second mating surface (12), respectively; A cutter head (2), wherein one end of the cutter head (2) is provided with a plurality of chip removal portions (21) corresponding one to one with the blade (1), the chip removal portion (21) is provided with a clamping groove (22) matching the shape of the blade (1), and the blade (1) can be fixed in the clamping groove (22); when the blade (1) is fixed in the clamping groove (22), at least one of the R-arc processing portions (13) is located outside the cutter head (2).

2. A new type of special R-arc machine clamping tool according to claim 1, characterized in that: It also includes a knife rod (3), and one end of the knife head (2) away from the blade (1) is fixedly connected to the knife rod (3).

3. A new type of special R-arc machine clamping tool according to claim 2, characterized in that: One end of the cutter bar (3) away from the cutter head (2) is provided with a side fixed edge (31).

4. A new type of special R-arc machine clamping tool according to claim 3, characterized in that: The diameter of the cutter bar (3) is smaller than the diameter of the cutter head (2); And / or, an empty knife groove (32) is provided at one end of the knife rod (3) close to the knife head (2); And / or, the tool bar (3) has an internal cooling channel; And / or, the length of the knife rod (3) is set to 80 mm, and the length of the side fixed edge (31) is set to 60 mm.

5. A new type of special R-arc machine clamping tool according to claim 1, characterized in that: When the blade (1) is fixed in the clamping groove (22), the blade (1) is loosely fitted with the clamping groove (22); one of the first fitting surface (11) and the second fitting surface (12) abuts against the bottom wall of the clamping groove (22), and the other is arranged away from the clamping groove (22).

6. A new type of special R-arc machine clamping tool according to claim 1 or 5, characterized in that: The blade (1) is plate-shaped, and the first mating surface (11) and the second mating surface (12) are parallel to each other; And / or, the first mating surface (11) and the second mating surface (12) both have a plurality of edges corresponding one-to-one to the R-arc processed portion (13); And / or, the first mating surface (11) and the second mating surface (12) are both square-shaped.

7. A new type of special R-arc machine clamping tool according to claim 1 or 5, characterized in that: The thickness of the blade (1) is the same as the depth of the clamping groove (22); And / or, a mounting hole (14) is provided at the center of the blade (1); And / or, the number of the blades (1) is set to two.

8. A new type of special R-arc machine clamping tool according to claim 1 or 5, characterized in that: The back angle of the blade (1) is set to 0°.

9. A new type of special R-arc machine clamping tool according to claim 1, characterized in that: The plurality of R-arc processing portions (13) are evenly distributed along the circumference of the blade (1); And / or, the R-arc processing portion (13) is set to an R2 arc.

10. A new type of special R-arc machine clamping tool according to claim 1, characterized in that: The length of the cutter head (2) is set to 40 mm; And / or, when the diameter of the hole to be processed is X, the minimum effective diameter of the cutter head (2) is set to X, the maximum effective diameter of the cutter head (2) is set to X+4 mm, the maximum rotation diameter of the cutter head (2) is set to X+10 mm, and the diameter of the cutter head (2) is set to X+9.8 mm.