Milling cutter clamping handle

Abstract

The milling cutter clamping cutter handle comprises a cutter handle barrel used for installing a milling cutter and a connecting base used for being connected with a machine tool, the cutter handle barrel is coaxial with the connecting base and fixedly arranged at the bottom of the connecting base, the bottom of the cutter handle barrel is open, and a fixing piece used for fixing the milling cutter is detachably arranged in the cutter handle barrel. And a pushing piece for separating the milling cutter from the cutter handle cylinder is arranged on the connecting seat. The cutter handle has the advantage of stable cutting at a high speed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a milling cutter clamping handle. Background Art

[0002] The tool holder is a tool that connects the mechanical spindle to the cutting tool and other accessories. The main standards currently include BT, SK, CAPTO, BBT, HSK and other spindle models.

[0003] As disclosed in the utility model patent with publication number CN218904485U and the name of a quick-loading and disassembly BT tool holder, it includes a tool seat and a sleeve seat. The outer side wall of the tool seat is fixedly connected to a mounting ring, and the outer side wall of the mounting ring is provided with two tool holders.

[0004] When this type of BT tool holder is connected and installed with the milling cutter, the milling cutter is still fixed in the sleeve seat by the abutment of the collet and the top cap. Because the collet is only fixed by abutment, the cutter head will vibrate when used at a higher speed, affecting the processing of the workpiece. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a milling cutter clamping shank. This device is used to solve the technical problem that the BT shank will vibrate the cutter head at a higher rotation speed and affect the workpiece processing quality.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A milling cutter clamping shank comprises a shank tube for mounting the milling cutter and a connecting seat for connecting to a machine tool. The shank tube is coaxial with the connecting seat and is fixed to the bottom of the connecting seat. The bottom of the shank tube is open and a fixing part for fixing the milling cutter is detachably provided in the shank tube. The connecting seat is provided with a pushing part for separating the milling cutter from the shank tube.

[0008] By adopting the above technical solution, the milling cutter can be effectively fixed and clamped in the shank tube through the fixing part, the milling cutter clamped in the shank tube can be conveniently pushed out through the pushing part during disassembly, and the distance that the fixed milling cutter extends out of the shank tube can be conveniently adjusted when installing the milling cutter.

[0009] The utility model is further configured as follows: the fixing part includes a collet and a rotating head, the collet is coaxial with the tool handle tube and is detachably installed in the tool handle tube, the rotating head is threadedly installed at the bottom of the tool handle tube, and when the rotating head is screwed upward along the tool handle tube, it abuts against the side wall of the collet and causes the collet to shrink.

[0010] By adopting the above technical solution, the provided collet can facilitate the installation of the milling cutter therein, and the collet can be contracted by the provided rotating head to clamp and fix the milling cutter in the collet.

[0011] The present utility model is further configured as follows: the collet includes a fixed sleeve and a plurality of semi-arc-shaped abutment pieces, the fixed sleeve is detachably connected to the shank tube, the plurality of abutment pieces are evenly distributed on the bottom of the fixed sleeve with the fixed sleeve as the axis, the bottoms of the plurality of abutment pieces extend outside the shank tube along the axis of the shank tube, an annular protrusion is provided in the rotating head, and the protrusion is used to abut against a section of the side wall of the plurality of abutment pieces extending outside the shank tube.

[0012] By adopting the above technical solution, the fixed sleeve can be detachably connected to the tool holder tube, which can effectively prevent the milling cutter from vibrating when the collet is rotated at high speed. Through the abutment of the provided protrusions and the plurality of abutment plates, the abutment plates can be effectively contracted toward the extension line of the axis of the fixed sleeve, and the milling cutter can be clamped therebetween.

[0013] The utility model is further configured as follows: a connecting block is fixedly provided between the shank tube and the connecting seat, and an annular clamping groove is provided on the side wall of the connecting block.

[0014] By adopting the above technical solution, the clamping groove is set up, and the clamping groove can be effectively clamped by the external tool changing device, and the entire tool handle can be driven to move for tool changing. The setting of the clamping groove also makes it easy to place the tool handle on the tool holder.

[0015] The utility model is further configured as follows: the pushing member includes a pushing rod and a spring, the pushing rod is vertically slidably penetrated on the connecting seat, a connecting groove is provided in the connecting block, the bottom of the pushing rod slides through the connecting block and the connecting groove in sequence and extends into the shank tube, the spring is sleeved on the pushing rod, one end of the spring is fixedly connected to the bottom of the connecting groove, and the other end of the spring is fixedly connected to the pushing rod.

[0016] By adopting the above technical solution, a push rod and a spring are provided, and the push rod is effectively slid so that the bottom of the push rod abuts against the end of the milling cutter, making it easy to push the milling cutter out of the shank tube during disassembly, and the push rod returns to its initial position by the rebound force of the spring.

[0017] The utility model is further configured as follows: a pushing block is provided at the bottom of the pushing rod, and an anti-slip layer is provided at the bottom of the pushing block.

[0018] By adopting the above technical solution, the push block can prevent the bottom of the push rod from sliding out of the tool holder tube, and when installing the milling cutter, the extension distance of the milling cutter can be effectively adjusted by the abutment between the top of the milling cutter and the bottom of the push block, and the anti-slip layer can prevent the milling cutter from rotating when it abuts against the push block.

[0019] The utility model is further configured as follows: an arc-shaped and I-shaped sliding block is provided on the connecting block, and the sliding block is used to cooperate with the connection part of the machine tool.

[0020] By adopting the above technical solution, the sliding block is connected to the connection of the machine tool in a sliding fit, thereby preventing the tool holder connected to the milling cutter from falling directly after the machine tool issues a tool change command. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic cross-sectional view of the overall structure of an embodiment of the utility model;

[0022] Figure 2 Schematic diagram of the overall structure of the collet.

[0023] In the above drawings: 1. Tool handle cylinder; 2. Connecting seat; 3. Collet; 4. Rotating head; 5. Fixed sleeve; 6. Abutment plate; 7. Protrusion; 8. Connecting block; 9. Clamping groove; 10. Push rod; 11. Spring; 12. Connecting groove; 13. Push block; 14. Anti-slip layer; 15. Slider. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0025] Example:

[0026] Reference Figure 1 and Figure 2 This device is a milling cutter clamping handle, including a shank tube 1 for mounting the milling cutter and a connecting base 2 for connecting to a machine tool. The shank tube 1 is coaxial with the connecting base 2 and is fixedly mounted on the bottom of the connecting base 2. A connecting block 8 is fixedly mounted between the shank tube 1 and the connecting base 2. An annular clamping groove 9 is provided on the side wall of the connecting block 8. An arc-shaped and I-shaped slider 15 is provided on the connecting block 8. The slider 15 is used to cooperate with the connection of the machine tool. This arrangement can effectively connect to the machine tool through the connecting base 2 and to the milling cutter rod through the shank tube 1. When changing tools, because the connecting base 2 and the machine tool are fixedly connected by the negative pressure generated by vacuum suction, the sliding connection of the slider 15 with the machine tool can prevent the shank and the milling cutter from falling directly.

[0027] like Figure 1 and Figure 2 As shown, the bottom of the tool handle cylinder 1 is open and a fixing part for fixing the milling cutter is detachably provided inside the tool handle cylinder 1. The fixing part includes a collet 3 and a rotating head 4. The collet 3 is coaxial with the tool handle cylinder 1 and is detachably installed inside the tool handle cylinder 1. The rotating head 4 is threadedly installed at the bottom of the tool handle cylinder 1. When the rotating head 4 is screwed upward along the tool handle cylinder 1, it abuts against the side wall of the collet 3 and causes the collet 3 to shrink. Figure 2As shown, the collet 3 includes a fixed sleeve 5 and a plurality of semi-arc-shaped abutment pieces 6. The fixed sleeve 5 is detachably connected to the tool handle cylinder 1. The abutment pieces 6 are evenly distributed on the bottom of the fixed sleeve 5 with the fixed sleeve 5 as the axis. The bottoms of the abutment pieces 6 extend outward from the tool handle cylinder 1 along the axis of the tool handle cylinder 1. The rotating head 4 is provided with an annular protrusion 7. The protrusion 7 is used to abut a section of the side wall of the abutment pieces 6 extending outside the tool handle cylinder 1. The fixed sleeve 5 is detachably mounted on the tool handle cylinder 1 by bolts. The abutment between the protrusion 7 and the abutment pieces 6 holds the milling cutter in the collet 3.

[0028] like Figure 1 As shown, the connecting seat 2 is provided with a push piece for disengaging the milling cutter from the shank tube 1. The push piece includes a push rod 10 and a spring 11. The push rod 10 is vertically slidably provided on the connecting seat 2. A connecting groove 12 is provided in the connecting block 8. The bottom of the push rod 10 slides through the connecting block 8 and the connecting groove 12 in sequence and extends into the shank tube 1. The spring 11 is sleeved on the push rod 10. One end of the spring 11 is fixedly connected to the bottom of the connecting groove 12, and the other end of the spring 11 is fixedly connected to the push rod 10. A push block 13 is provided at the bottom of the push rod 10. An anti-slip layer 14 is provided at the bottom of the push block 13. The anti-slip layer 14 is a rubber layer.

[0029] Working principle:

[0030] During installation, first install one side of the milling cutter arbor of suitable diameter in the collet 3, and adjust the distance of the milling cutter extension by abutting against the push block 13, then connect the rotating head 4 with the tool holder barrel 1 through the thread, so that the protrusion 7 in the rotating head 4 slides against the outer wall of the several abutment pieces 6, and after the rotating head 4 rotates a certain number of circles, the several abutment pieces 6 are clamped and fixed to the milling cutter arbor. After the installation is completed, connect the connecting seat 2 to the machine tool. When a vacuum negative pressure is formed between the connecting seat 2 and the machine tool, the push rod 10 and the push block 13 will rise, so that the push block 13 does not contact the milling cutter, and processing can be carried out after installation. When it is necessary to change the tool, first break the vacuum between the machine tool and the connecting seat 2, and then rotate the connecting block 8 to make the slider 15 on the connecting block 8 slide out of the machine tool, and then the tool holder can be removed.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A milling cutter clamping handle, characterized by: The invention comprises a tool handle cylinder (1) for mounting a milling cutter and a connecting seat (2) for connecting to a machine tool, wherein the tool handle cylinder (1) is coaxial with the connecting seat (2) and is fixedly arranged at the bottom of the connecting seat (2), the bottom of the tool handle cylinder (1) is open, and a fixing part for fixing the milling cutter is detachably arranged in the tool handle cylinder (1), and a pushing part for separating the milling cutter from the tool handle cylinder (1) is arranged on the connecting seat (2).

2. The milling cutter clamping handle according to claim 1, characterized in that: The fixing part comprises a collet (3) and a rotating head (4); the collet (3) is coaxial with the tool handle tube (1) and is detachably mounted in the tool handle tube (1); the rotating head (4) is threadedly mounted on the bottom of the tool handle tube (1); and when the rotating head (4) is screwed upward along the tool handle tube (1), it abuts against the side wall of the collet (3) and causes the collet (3) to contract.

3. The milling cutter clamping handle according to claim 2, characterized in that: The collet (3) comprises a fixed sleeve (5) and a plurality of semi-arc-shaped abutting pieces (6); the fixed sleeve (5) is detachably connected to the shank tube (1); the plurality of abutting pieces (6) are evenly distributed on the bottom of the fixed sleeve (5) with the fixed sleeve (5) as the axis; the bottoms of the plurality of abutting pieces (6) extend outward from the shank tube (1) along the axis of the shank tube (1); an annular protrusion (7) is provided in the rotating head (4); the protrusion (7) is used to abut against a section of the side wall of the plurality of abutting pieces (6) extending outward from the shank tube (1).

4. The milling cutter clamping handle according to claim 1, characterized in that: A connecting block (8) is fixedly provided between the shank tube (1) and the connecting seat (2), and an annular clamping groove (9) is provided on the side wall of the connecting block (8).

5. The milling cutter clamping handle according to claim 4, characterized in that: The pushing member includes a pushing rod (10) and a spring (11), the pushing rod (10) is vertically slidably penetrated on the connecting seat (2), a connecting groove (12) is provided in the connecting block (8), the bottom of the pushing rod (10) slides through the connecting block (8) and the connecting groove (12) in sequence and extends into the shank tube (1), the spring (11) is sleeved on the pushing rod (10), one end of the spring (11) is fixedly connected to the bottom of the connecting groove (12), and the other end of the spring (11) is fixedly connected to the pushing rod (10).

6. The milling cutter clamping handle according to claim 5, characterized in that: A pushing block (13) is provided at the bottom of the pushing rod (10), and an anti-slip layer (14) is provided at the bottom of the pushing block (13).

7. The milling cutter clamping handle according to claim 4, characterized in that: The connecting block (8) is provided with an arc-shaped and I-shaped sliding block (15), and the sliding block (15) is used for slidingly matching with the connection part of the machine tool.

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