Corrugated milling cutter with extensible cutter body

Abstract

The utility model belongs to the technical field of cutting tools, particularly relates to a corrugated milling cutter with an extensible cutter body, and provides the following scheme aiming at the problems that the length of a cutter handle of the existing corrugated milling cutter cannot be extended, the cutter handle cannot be extended as required during use, and the use scene of the corrugated milling cutter is limited: the corrugated milling cutter comprises a cutter bar main body, the corrugated milling cutter head is located at the top of the cutter bar body, the extension cutter bar is installed below the cutter bar body, and a limiting assembly used for locking the cutter bar body and the extension cutter bar is arranged on the extension cutter bar. The top of the extension cutter bar is fixedly provided with a connector, the connector penetrates through the bottom of the cutter bar main body, and the extension cutter bar can be inserted into the fixed slot through the fixed insertion rod on the connector, so that the connection work of the extension cutter bar and the cutter bar main body is realized; and the extended cutter bar can be directly mounted on the cutter bar main body, so that the use is convenient.

Description

Technical Field

[0001] The utility model relates to a corrugated milling cutter, in particular to a corrugated milling cutter with an extendable cutter body, belonging to the technical field of cutting tools. Background Art

[0002] A corrugated milling cutter, also known as a wave-edge end mill, is a specially designed milling tool. It uses a special milling fixture to further process the spiral rake face of an ordinary high-speed steel end mill into a wavy helical surface, which intersects with the flank face to form a wavy cutting edge.

[0003] In the prior art, a corrugated milling cutter disclosed in Publication No. CN221269779U includes a shank and a cutter head disposed at the end of the shank. The cutter head has a plurality of spiral chip grooves formed along its length, and the sidewalls of the cutter head between adjacent chip grooves form a cutting edge. Each side edge of the cutting edge has a plurality of corrugated teeth disposed along its length, and each corrugated tooth is flat on the side away from the cutting edge. Both sides of each corrugated tooth are provided with a first arc surface, with the arc center of the first arc surface located on the side of the corrugated tooth closest to the cutting edge. This application has the effect of increasing the service life of the cutting edge of the corrugated milling cutter.

[0004] However, in actual use, when the above-mentioned corrugated milling cutter is in use, the length of its shank cannot be extended, and the shank cannot be extended as needed during use, which limits the use scenarios of the corrugated milling cutter. Utility Model Content

[0005] The utility model provides a corrugated milling cutter with an extendable cutter body to solve the problem that the length of the corrugated milling cutter handle cannot be extended, the handle cannot be extended as needed during use, and the use scenarios of the corrugated milling cutter are limited.

[0006] The utility model achieves the above-mentioned object through the following technical solutions: a corrugated milling cutter with an extendable cutter body, comprising a cutter bar body, a corrugated milling cutter head located on the top of the cutter bar body, and an extended cutter bar installed below the cutter bar body, wherein the extended cutter bar is provided with a limit assembly for locking the cutter bar body and the extended cutter bar;

[0007] A connector is fixed on the top of the extended knife rod, and the connector passes through the bottom of the knife rod body. Four groups of fixed plug rods passing through the surface of the connector are arranged inside the connector, and a fixed slot that is compatible with the fixed plug rod is opened inside the knife rod body.

[0008] As a further solution of the present invention: the limiting assembly includes a knob base rotatably mounted on the bottom of the extended knife rod, and a limiting block is fixedly provided on the surface of the knob base.

[0009] As a further scheme of the utility model: the inside of the extension knife rod is provided with an installation groove matched with the limiting block, and the limiting block and the knob base form a I-shaped structure.

[0010] As a further scheme of the utility model: the top of the limiting block is provided with an adjusting screw rod penetrating the inside of the extension knife rod, and the adjusting screw rod is rotatably installed in the inside of the extension knife rod.

[0011] As a further scheme of the utility model: the surface of the adjusting screw rod is connected with a lifting slider with a trapezoidal structure through a screw rod sleeve, a guide spring is arranged between the lifting slider and the limiting block, and the guide spring is sleeved on the outside of the adjusting screw rod.

[0012] As a further scheme of the utility model: the surface of the fixed insertion rod is sleeved with a limiting spring, and the distal end of the fixed insertion rod is fixedly provided with an abutting piece, and the two ends of the limiting spring are connected with the abutting piece and the connecting head respectively.

[0013] As a further scheme of the utility model: the abutting piece and the lifting slider are mutually attached.

[0014] The utility model has the beneficial effects that:

[0015] The extension knife rod can be inserted into the inside of the fixed insertion groove through the fixed insertion rod on the connecting head, so that the connection work of the extension knife rod and the knife rod body is realized, when the knife body needs to be extended, the extension knife rod can be directly installed on the knife rod body, and the use is convenient.

[0016] The limiting assembly is arranged, the knob base at the bottom is rotated, the adjusting screw rod is driven to rotate through the limiting block, under the action of the lifting slider, the fixed insertion rod is inserted into the fixed insertion groove, the extension knife rod and the knife rod body are limited and locked in combination with the guide spring and the limiting spring. DRAWINGS

[0017] Fig. 1 It is the whole structure schematic view of the utility model;

[0018] Fig. 2 It is the structure schematic view of the connecting head of the utility model;

[0019] Fig. 3 It is the structure schematic view of the limiting assembly of the utility model;

[0020] Fig. 4 It is the structure schematic view of the knife rod body and the extension knife rod of the utility model.

[0021] In the figure: 1. Tool bar body; 2. Corrugated milling cutter head; 3. Extended tool bar; 4. Limit assembly; 401. Knob base; 402. Limit block; 403. Guide spring; 404. Adjusting screw; 405. Lifting slider; 406. Abutment; 407. Limit spring; 5. Connector; 6. Fixed rod; 7. Fixed slot; 8. Mounting slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0023] like Figs. 1 to 4 As shown, a corrugated milling cutter with an extendable cutter body includes a cutter bar body 1, a corrugated milling cutter head 2 located on the top of the cutter bar body 1, and an extended cutter bar 3 installed below the cutter bar body 1. The extended cutter bar 3 is provided with a limit assembly 4 for locking the cutter bar body 1 and the extended cutter bar 3;

[0024] A connecting head 5 is fixed on the top of the extended knife rod 3, and the connecting head 5 passes through the bottom of the knife rod main body 1. Four groups of fixed plug rods 6 are provided inside the connecting head 5 and pass through the surface of the connecting head 5. The interior of the knife rod main body 1 is provided with a fixed slot 7 adapted to the fixed plug rod 6. The extended knife rod 3 can be inserted into the interior of the fixed slot 7 through the fixed plug rod 6 on the connecting head 5, thereby realizing the connection between the extended knife rod 3 and the knife rod main body 1. When the knife body needs to be extended, the extended knife rod 3 can be directly installed on the knife rod main body 1 for easy use. Example 2

[0025] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0026] The limit assembly 4 includes a knob base 401 rotatably installed at the bottom of the extended knife rod 3, and a limit block 402 is fixedly provided on the surface of the knob base 401. The limit assembly 4 is connected to the extended knife rod 3 through the limit block 402. The knob base 401 at the bottom is rotated, thereby driving the limit block 402 to rotate inside the extended knife rod 3.

[0027] An installation groove 8 is provided inside the extended knife rod 3 to match the limit block 402, and the limit block 402 and the knob base 401 form an I-shaped structure. The installation groove 8 limits the limit block 402 to prevent the limit block 402 from detaching from the extended knife rod 3.

[0028] The top of the limiting block 402 is provided with an adjusting screw rod 404 penetrating the inside of the extension cutter bar 3, and the adjusting screw rod 404 is rotationally installed in the inside of the extension cutter bar 3, and the limiting block 402 can drive the adjusting screw rod 404 to rotate by rotating. Embodiment three

[0029] In addition to comprising all the technical features in embodiment one, the embodiment also comprises:

[0030] The surface of the adjusting screw rod 404 is connected with a lifting slider 405 with a trapezoidal structure through a screw rod sleeve, a guide spring 403 is arranged between the lifting slider 405 and the limiting block 402, the guide spring 403 is sleeved on the outside of the adjusting screw rod 404, guide rods penetrating the inside of the lifting slider 405 are arranged on both sides of the adjusting screw rod 404, which are not shown in the figure, and the guide rods can guide the lifting slider 405, so that the lifting slider 405 can only move up and down, and the guide spring 403 can stretch and contract with the lifting slider 405.

[0031] The surface of the fixed insertion rod 6 is sleeved with a limiting spring 407, and the distal end of the fixed insertion rod 6 is fixedly provided with an abutting piece 406, the two ends of the limiting spring 407 are connected with the abutting piece 406 and the connecting head 5 respectively, and the limiting spring 407 can stretch and contract with the movement of the fixed insertion rod 6, when the abutting piece 406 contacts the uppermost end of the lifting slider 405, the fixed insertion rod 6 can be retracted into the inside of the connecting head 5 under the pulling of the limiting spring 407, so that the fixed insertion rod 6 is separated from the fixed insertion slot 7.

[0032] The abutting piece 406 and the lifting slider 405 are mutually attached, with the lifting of the lifting slider 405, the distance between the abutting piece 406 and the axis of the lifting slider 405 is changed, so as to push the fixed insertion rod 6, and the fixed insertion rod 6 is inserted into the fixed insertion slot 7 or separated from the fixed insertion slot 7.

[0033] Working principle: when the corrugated milling cutter with the extendable cutter body is used, the knob base 401 at the bottom is rotated, so as to drive the limiting block 402 to rotate in the inside of the extension cutter bar 3, and drive the adjusting screw rod 404 to rotate, at this time, the lifting slider 405 moves downward, the guide spring 403 can be compressed with the lowering of the lifting slider 405, at this time, when the abutting piece 406 contacts the uppermost end of the lifting slider 405, the fixed insertion rod 6 can be retracted into the inside of the connecting head 5 under the pulling of the limiting spring 407, and the connecting head 5 on the extension cutter bar 3 is inserted into the bottom of the cutter bar body 1, after the knob base 401 is loosened, the guide spring 403 is reset, so as to push the lifting slider 405 to move upward, so that the abutting piece 406 contacts the lowermost end of the lifting slider 405, so as to push the fixed insertion rod 6 to be inserted into the fixed insertion slot 7, and the connection work of the extension cutter bar 3 and the cutter bar body 1 is realized, when the cutter body needs to be extended, the extension cutter bar 3 can be directly installed on the cutter bar body 1, which is convenient to use.

[0034] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments should, therefore, be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0035] Furthermore, it should be understood that although the present specification is described in terms of exemplary embodiments, not every implementation embodies only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other implementations that those skilled in the art can understand.

Claims

1. A corrugated milling cutter with an extendable cutter body, characterized in that: The invention comprises a tool bar body (1), a corrugated milling cutter head (2) located at the top of the tool bar body (1), and an extended tool bar (3) installed below the tool bar body (1), wherein the extended tool bar (3) is provided with a limit assembly (4) for locking the tool bar body (1) and the extended tool bar (3); A connector (5) is fixedly provided on the top of the extended blade rod (3), and the connector (5) passes through the bottom of the blade rod body (1); four groups of fixed plug rods (6) passing through the surface of the connector (5) are provided inside the connector (5), and a fixed slot (7) adapted to the fixed plug rod (6) is opened inside the blade rod body (1).

2. The corrugated milling cutter with an extendable cutter body according to claim 1, characterized in that: The limiting assembly (4) comprises a knob base (401) rotatably mounted on the bottom of the extended knife rod (3), and a limiting block (402) is fixedly provided on the surface of the knob base (401).

3. The corrugated milling cutter with an extendable cutter body according to claim 2, characterized in that: The interior of the extended knife rod (3) is provided with a mounting groove (8) adapted to the limiting block (402), and the limiting block (402) and the knob base (401) form an I-shaped structure.

4. The corrugated milling cutter with an extendable cutter body according to claim 3, characterized in that: An adjusting screw rod (404) that passes through the interior of the extended knife rod (3) is installed on the top of the limiting block (402), and the adjusting screw rod (404) is rotatably installed inside the extended knife rod (3).

5. The corrugated milling cutter with an extendable cutter body according to claim 4, characterized in that: The surface of the adjusting screw rod (404) is connected to a lifting slider (405) having a trapezoidal cross-section via a screw rod sleeve. A guide spring (403) is provided between the lifting slider (405) and the limiting block (402), and the guide spring (403) is sleeved on the outside of the adjusting screw rod (404).

6. The corrugated milling cutter with an extendable cutter body according to claim 5, characterized in that: A limit spring (407) is sleeved on the surface of the fixed insert rod (6), and an abutment member (406) is fixedly provided at the end of the fixed insert rod (6), and the two ends of the limit spring (407) are respectively connected to the abutment member (406) and the connector (5).

7. The corrugated milling cutter with an extendable cutter body according to claim 6, characterized in that: The abutment member (406) and the lifting slider (405) are in contact with each other.

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