Lengthened milling cutter

Abstract

The utility model discloses a lengthened milling cutter which comprises a milling cutter body and a connecting plug, the connecting plug is mounted at the top end of the milling cutter body, a plugging sleeve is arranged above the milling cutter body, three groups of second limiting buckles are mounted on the outer wall of the plugging sleeve at equal intervals, and the second limiting buckles are fixedly connected with the plugging sleeve. Threaded holes are formed in the positions, on one sides of the second limiting buckles, of the outer wall of the inserting sleeve correspondingly, the threaded holes extend into the inserting sleeve, locking bolts are arranged in the threaded holes correspondingly, the locking bolts are in threaded connection with the threaded holes, and three sets of clamping blocks are arranged in the inserting sleeve at equal intervals; and the clamping block is movably connected with the locking bolt. According to the utility model, the milling cutter can be conveniently centered, clamped and fixed, the length of the milling cutter can be adjusted in a multi-stage manner, the milling cutter can be conveniently and quickly disassembled and assembled, the structural strength is increased, and the convenience in disassembly and assembly of the milling cutter and the stability in milling are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lengthening milling cutter technical field, concretely is a lengthening milling cutter. BACKGROUND

[0002] Milling cutter refers to the rotating cutter for milling processing, with one or more cutter teeth, each cutter tooth intermittently cuts the excess of workpiece in turn, it is mainly used for processing plane, step, groove, forming surface and cutting workpiece on milling machine, milling cutter is multi-tooth rotary cutter, each cutter tooth is equivalent to a turning tool fixed on the rotary surface of milling cutter, the cutting edge participating in cutting at the same time is longer during milling, and there is no idle stroke, so the productivity is higher, milling cutters are various in structure and widely used, and can be divided into three categories according to their uses, namely, milling cutter for processing plane, milling cutter for processing groove and milling cutter for processing forming surface, the size of the traditional milling cutter is mostly fixed size, the size of the traditional milling cutter is shorter, and it cannot be used for deep hole milling processing, meanwhile, the traditional lengthening milling cutter is mostly lengthened by welding steel bars, and the structural strength is poor, in order to improve the situation, the lengthening milling cutter is provided.

[0003] As disclosed in a kind of double-edge milling cutter with lengthening rod in authorized announcement No. CN219292843U, including milling cutter column and blade, the blade is spirally arranged on the side wall of milling cutter column, ball nose milling cutter is located at the bottom end of milling cutter column, first lengthening rod is connected at the top end of milling cutter column, second lengthening rod is connected at the top end of first lengthening rod, fastening bolt is screwed and connected on the side wall of the top end of first lengthening rod, nut is screwed and locked at the right end of fastening bolt, threaded column is vertically fixed at the top end of milling cutter column, screw hole is arranged at the bottom end of first lengthening rod, abutment groove is located at the top end of first lengthening rod, fastening hole is arranged on the side wall of the top end of first lengthening rod, abutment column is vertically fixed at the bottom end of second lengthening rod, abutment hole is arranged at the center of abutment column;

[0004] It realizes that first lengthening rod and second lengthening rod are connected and fastened by fastening bolt penetrating fastening hole and abutment hole and being screwed and fastened with nut.

[0005] But it does not solve the problem that the existing lengthening milling cutter is not convenient to center clamping and fixing milling cutter and multi-stage adjusting the length of milling cutter when in use, is not conducive to the quick disassembly and assembly of milling cutter, and affects the convenience of disassembly and assembly of milling cutter and the stability during milling. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of lengthening milling cutter, to solve the problem that the lengthening milling cutter is not convenient to center clamping and fixing milling cutter and multi-stage adjusting the length of milling cutter in the above background art, is not conducive to the quick disassembly and assembly of milling cutter, and affects the convenience of disassembly and assembly of milling cutter and the stability during milling.

[0007] To achieve the above object, the utility model provides the following technical scheme: a lengthening milling cutter, including milling cutter body and plug connector, the top of milling cutter body is installed with plug connector, the top of milling cutter body is provided with plug sleeve, the outer wall of plug sleeve is installed with three groups of second limit buckles of equal interval, and second limit buckle is fixedly connected with plug sleeve, the outer wall of plug sleeve of one side of second limit buckle all is installed with threaded hole, and threaded hole extends to the inside of plug sleeve, the inside of threaded hole all is provided with locking bolt, and locking bolt is connected with threaded hole threadedly, the inside of plug sleeve is provided with three groups of clamping blocks of equal interval, and clamping block is movably connected with locking bolt, the inner wall of plug sleeve is installed with three groups of limit blocks of equal interval, and clamping block is slidably connected with limit block.

[0008] Preferably, the inner wall of the clamping block is installed with three groups of clamping grooves of equal interval, and the clamping grooves are slidably connected with the plug connector.

[0009] Preferably, the top of the plug sleeve is provided with a connecting sleeve, and the connecting sleeve is threadedly connected with the plug sleeve.

[0010] Preferably, the outer wall of the connecting sleeve is installed with three groups of third limit buckles of equal interval, and the third limit buckles are fixedly connected with the connecting sleeve.

[0011] Preferably, the top of the connecting sleeve is provided with an extension rod, and the extension rod is threadedly connected with the connecting sleeve.

[0012] Preferably, the outer wall of the extension rod is installed with three groups of first limit buckles of equal interval, and the first limit buckles are fixedly connected with the extension rod, and the centers of the first limit buckles, the third limit buckles, and the second limit buckles are located on the same center line.

[0013] Preferably, the inside of the first limit buckle is provided with a long screw rod, and the long screw rod extends into the inside of the third limit buckle and the second limit buckle.

[0014] Preferably, the surface of the long screw rod is sleeved with a nut, and the nut is threadedly connected with the long screw rod.

[0015] Compared with the prior art, the lengthening milling cutter not only realizes convenient centering clamping and fixing of the milling cutter and multi-stage adjustment of the length of the milling cutter, facilitates quick disassembly and assembly of the milling cutter, increases the structural strength, and improves the convenience during disassembly and assembly of the milling cutter and the stability during milling. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 is a three-dimensional explosion structure schematic view of the utility model.

[0018] Figure 3 It is the three-dimensional perspective structure schematic view of the plug-in sleeve of the utility model.

[0019] Figure 4 It is the overhead section structure schematic view of the plug-in sleeve of the utility model.

[0020] Figure 5 It is the three-dimensional structure schematic view of the clamping block of the utility model.

[0021] In the figure: 1, lengthening rod; 2, long screw rod; 3, connecting sleeve; 4, plug-in sleeve; 5, milling cutter body; 6, nut; 7, first limiting buckle; 8, locking bolt; 9, plug-in head; 10, clamping block; 11, threaded hole; 12, second limiting buckle; 13, third limiting buckle; 14, limiting block; 15, clamping groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides an embodiment: a lengthening milling cutter, including milling cutter body 5 and plug-in head 9, the top end of milling cutter body 5 is installed with plug-in head 9, the top of milling cutter body 5 is provided with plug-in sleeve 4, the outer wall of plug-in sleeve 4 is installed with three groups of second limiting buckle 12 at equal intervals, and second limiting buckle 12 is fixedly connected with plug-in sleeve 4, the outer wall of plug-in sleeve 4 on the side of second limiting buckle 12 is all installed with threaded hole 11, and threaded hole 11 extends to the inside of plug-in sleeve 4, the inside of threaded hole 11 is all provided with locking bolt 8, and locking bolt 8 is threadedly connected with threaded hole 11, the inside of plug-in sleeve 4 is provided with three groups of clamping block 10 at equal intervals, and clamping block 10 is movably connected with locking bolt 8, the inner wall of plug-in sleeve 4 is installed with three groups of limiting block 14 at equal intervals, and clamping block 10 is slidably connected with limiting block 14.

[0024] When the milling cutter body 5 needs to be lengthened, the milling cutter body 5 is taken, the plug-in connector 9 is inserted into the inside of the plug-in sleeve 4, the plug-in connector 9 is clamped in the inside of the clamping groove 15, the plug-in connector 9 can be clamped in the position, and then the length of the milling cutter body 5 is adjusted. After that, the locking bolt 8 is pressed in the inside of the threaded hole 11, the locking bolt 8 is rotated, the plug-in connector 9 is clamped and fixed in the inside of the plug-in sleeve 4 by the three groups of clamping blocks 10, the fixed connection of the milling cutter body 5 is completed, and the length of the milling cutter is adjusted. When the milling cutter body 5 needs to be quickly disassembled, the locking bolt 8 is disassembled from the threaded hole 11, the milling cutter body 5 is disassembled from the inside of the plug-in sleeve 4, the plug-in sleeve 4 is screwed in the inside of the connecting sleeve 3, and the lengthening rod 1 is screwed in the inside of the connecting sleeve 3, so that the lengthening of the milling cutter body 5 is completed, the convenient center clamping and fixing of the milling cutter and the multi-stage adjustment of the length of the milling cutter are realized, the quick disassembly and assembly of the milling cutter are facilitated, and the convenience of the disassembly and assembly of the milling cutter is improved.

[0025] The inner wall of the clamping block 10 is provided with three groups of clamping grooves 15 at equal intervals, and the clamping groove 15 is in sliding connection with the plug-in connector 9.

[0026] The upper part of the plug-in sleeve 4 is provided with the connecting sleeve 3, and the connecting sleeve 3 is in threaded connection with the plug-in sleeve 4. The outer wall of the connecting sleeve 3 is provided with three groups of third limiting buckles 13 at equal intervals, and the third limiting buckle 13 is in fixed connection with the connecting sleeve 3.

[0027] The upper part of the connecting sleeve 3 is provided with the lengthening rod 1, and the lengthening rod 1 is in threaded connection with the connecting sleeve 3. The outer wall of the lengthening rod 1 is provided with three groups of first limiting buckles 7 at equal intervals, and the first limiting buckle 7 is in fixed connection with the lengthening rod 1. The centers of the first limiting buckle 7, the third limiting buckle 13 and the second limiting buckle 12 are located on the same center line.

[0028] The inside of the first limiting buckle 7 is provided with the long screw rod 2, and the long screw rod 2 extends into the inside of the third limiting buckle 13 and the second limiting buckle 12. The surface of the long screw rod 2 is provided with the nut 6, and the nut 6 is in threaded connection with the long screw rod 2.

[0029] The long screw rod 2 is inserted into the interiors of the first limiting buckle 7, the third limiting buckle 13 and the second limiting buckle 12 in sequence, and then the nut 6 is screwed on the surface of the long screw rod 2, so that the connection between the lengthening rod 1, the connecting sleeve 3 and the plug-in sleeve 4 is more closely connected under the limiting action of the first limiting buckle 7 and the second limiting buckle 12, and the structure strength of the whole device is strengthened by the three groups of long screw rods 2, so as to guarantee the stability of the milling cutter body 5 during operation, increase the structure strength and improve the stability during milling. The above is the whole use content of the lengthening milling cutter.

[0030] Working principle: when it is needed to lengthen the milling cutter body 5, the milling cutter body 5 is taken, the plug-in head 9 is inserted into the interior of the plug-in sleeve 4 by the milling cutter body 5, and the plug-in head 9 is clamped in the clamping groove 15, because the clamping grooves 15 are sequentially arranged from top to bottom, so the position of the clamping of the plug-in head 9 can be adjusted, and then the length of the milling cutter body 5 is adjusted, and then the locking bolt 8 is pressed in the threaded hole 11, the locking bolt 8 is rotated, and the clamping block 10 is moved to the center position in the plug-in sleeve 4 under the threaded connection of the locking bolt 8 and the threaded hole 11 and the movable cooperation of the locking bolt 8 and the clamping block 10, and the clamping block 10 is limited by the limiting block 14, so that the plug-in head 9 is clamped and fixed in the interior of the plug-in sleeve 4 by the three groups of clamping blocks 10, so as to complete the fixed connection of the milling cutter body 5. When it is needed to quickly disassemble the milling cutter body 5, the milling cutter body 5 can be disassembled from the interior of the plug-in sleeve 4 by only disassembling the locking bolt 8 from the threaded hole 11, and then the plug-in sleeve 4 is screwed in the interior of the connecting sleeve 3, and the lengthening rod 1 is screwed in the interior of the connecting sleeve 3, so as to complete the lengthening of the milling cutter body 5. The long screw rod 2 is inserted into the interiors of the first limiting buckle 7, the third limiting buckle 13 and the second limiting buckle 12 in sequence, and then the nut 6 is screwed on the surface of the long screw rod 2, so that the connection between the lengthening rod 1, the connecting sleeve 3 and the plug-in sleeve 4 is more closely connected under the limiting action of the first limiting buckle 7 and the second limiting buckle 12, and the structure strength of the whole device is strengthened by the three groups of long screw rods 2, so as to guarantee the stability of the milling cutter body 5 during operation, increase the structure strength and improve the stability during milling. The above is the whole use content of the lengthening milling cutter.

Claims

1. An extended milling cutter comprising a milling cutter body (5) and a plug-in head (9), characterized in that: The top end of the milling cutter body (5) is provided with a plug (9), and the upper end of the milling cutter body (5) is provided with a plug sleeve (4), the outer wall of the plug sleeve (4) is provided with three groups of second limiting buckles (12) at equal intervals, and the second limiting buckles (12) are fixedly connected with the plug sleeve (4), the outer wall of the plug sleeve (4) on one side of the second limiting buckle (12) is provided with a threaded hole (11), and the threaded hole (11) extends to the inside of the plug sleeve (4), the inside of the threaded hole (11) is provided with a locking bolt (8), and the locking bolt (8) is in threaded connection with the threaded hole (11), the inside of the plug sleeve (4) is provided with three groups of clamping blocks (10) at equal intervals, and the clamping blocks (10) are in movable connection with the locking bolt (8), the inner wall of the plug sleeve (4) is provided with three groups of limiting blocks (14) at equal intervals, and the clamping blocks (10) are in sliding connection with the limiting blocks (14).

2. A lengthened milling cutter according to claim 1, characterised in that: The inner wall of the clamping block (10) is provided with three groups of clamping grooves (15) at equal intervals, and the clamping grooves (15) are in sliding connection with the plug (9).

3. A lengthened milling cutter according to claim 1, wherein: The upper end of the plug sleeve (4) is provided with a connecting sleeve (3), and the connecting sleeve (3) is in threaded connection with the plug sleeve (4).

4. A lengthened milling cutter according to claim 3, wherein: The outer wall of the connecting sleeve (3) is provided with three groups of third limiting buckles (13) at equal intervals, and the third limiting buckles (13) are fixedly connected with the connecting sleeve (3).

5. A lengthened milling cutter according to claim 3, wherein: The upper end of the connecting sleeve (3) is provided with an extension rod (1), and the extension rod (1) is in threaded connection with the connecting sleeve (3).

6. A lengthened milling cutter according to claim 5, wherein: The outer wall of the extension rod (1) is provided with three groups of first limiting buckles (7) at equal intervals, and the first limiting buckles (7) are fixedly connected with the extension rod (1), and the centers of the first limiting buckles (7), the third limiting buckles (13) and the second limiting buckles (12) are located on the same center line.

7. A lengthened milling cutter according to claim 6, wherein: The inside of the first limiting buckle (7) is provided with a long screw rod (2), and the long screw rod (2) extends to the inside of the third limiting buckle (13) and the second limiting buckle (12).

8. A lengthened milling cutter according to claim 7, wherein: The surface of the long screw rod (2) is provided with a nut (6), and the nut (6) is in threaded connection with the long screw rod (2).

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