CN216263551U - Adjustable side fixed cutter handle - Google Patents

Abstract

An adjustable side-fixing knife handle is characterized in that a clamping part of a knife handle body is provided with a central hole, two side-fixing screws are axially arranged on the clamping part of the knife handle body, and the central hole of the knife handle body is an internal threaded hole; the outer contour of the eccentric sleeve is T-shaped, the periphery of the external thread sleeve of the eccentric sleeve is an external thread peripheral surface matched with the internal thread hole of the knife handle body, an inner hole of the external thread sleeve is an eccentric unthreaded hole eccentric relative to the external thread peripheral surface, a notch formed by cutting off the external thread sleeve part outer wall is arranged on one vertical side surface of the unthreaded hole of the external thread sleeve and the external thread peripheral surface in an offset direction, the eccentric sleeve is screwed into a central hole of the knife handle body through threaded connection, and an adjusting gap is reserved between the inner side surface of the end edge of the eccentric sleeve and the end surface of the knife handle body. The eccentric sleeve and the knife handle body are matched together, the eccentric sleeve is rotated to realize the offset of the knife and the center of the knife handle, the purpose of adjusting the machining amount of the knife is achieved, the adjustable offset is large, the adjustment is convenient, and the rigidity of the clamped knife is strong; the micro-adjustment can be realized through the scale marks, and the cutter adjustment is accurate and convenient.

Description

Adjustable side fixed cutter handle

Technical Field

The utility model relates to a side fixed cutter handle used as a machine tool accessory, in particular to an adjustable side fixed cutter handle.

Background

The side fixed cutter handle is used as a machine tool accessory, is a frequently used cutter handle and is used for realizing the connection of a cutter and a machine tool spindle. The common side-fixing tool shank is not adjustable, and after the tool shank or a cutter is abraded, a workpiece cannot be machined to a required size, a qualified product cannot be produced, or a radially clamped tool bit is inconvenient to adjust. The utility model patent number CN201720240728.0 discloses a handle of a knife with adjustable is provided with the annular adjustment tank that the cross-section is isosceles trapezoid at the periphery of handle of a knife body, annular adjustment tank bottom and installation cavity inner wall form the regulation thin wall, extrude annular adjustment tank deformation through the adjustment mechanism that sets up at the handle of a knife body periphery, in order to realize adjusting the purpose that the handle of a knife body precision is beated, because the utility model purpose of this patent is used for eliminating the beat error of handle of a knife, so the volume that this structure can be adjusted is very little, and need check the adjustment volume of adjusting the jackscrew in the adjustment mechanism many times in accommodation process, it is troublesome to adjust, the adjustment of unsuitable big offset.

Disclosure of Invention

The utility model aims to provide an adjustable side fixing cutter handle, which solves the problems that the offset of the side fixing cutter handle cannot be adjusted or the adjustment is troublesome and the required adjustment amount cannot be achieved in the prior art.

The object of the utility model is achieved in the following way: an adjustable side-fixed knife handle is provided with a knife handle body which is formed by concentrically integrating an outer cone part connected with a machine tool spindle and a clamping part used for being connected with a knife tool, wherein the clamping part of the knife handle body is provided with a central hole; the outer contour of the eccentric sleeve is in a T shape, the outer periphery of the external thread sleeve of the eccentric sleeve is an external thread peripheral surface matched with the internal thread hole of the tool shank body, an inner hole of the external thread sleeve is an eccentric unthreaded hole eccentric relative to the external thread peripheral surface, an offset is arranged between the central line of the eccentric unthreaded hole and the central line of the external thread peripheral surface, a notch formed by cutting off the outer wall of the external thread sleeve part is arranged on one vertical side surface of the unthreaded hole of the external thread sleeve and the external thread peripheral surface in the offset direction, the eccentric sleeve is screwed into the central hole of the tool shank body through threaded connection, a side fixing screw is positioned in the range of the notch of the eccentric sleeve, an adjusting gap is reserved between the inner side surface of the end edge of the eccentric sleeve and the end surface of the tool shank body, and the adjusting gap is reserved for the eccentric sleeve to move back and forth relative to the tool shank body when the eccentric sleeve is rotated; the cutter is placed in the eccentric unthreaded hole of the eccentric sleeve, the eccentric sleeve is rotated to be positioned at a required eccentric position, the side fixing screw is noticed not to be separated from the range of the notch, the side fixing screw is rotated to enable the tip of the side fixing screw to penetrate through the notch to be abutted against the peripheral surface of the cutter and screwed tightly, and the cutter is eccentrically fixed with the cutter handle body.

Two poking notches with the same diameter are reserved at the end edge of the eccentric sleeve, so that a user can conveniently use a tool to clamp the poking notches to rotate the eccentric sleeve.

The threads on the central hole of the knife handle body and the external thread sleeve of the eccentric sleeve are matched T-shaped threads, and the T-shaped threads are adopted to ensure the connection precision of the eccentric sleeve and the central hole of the knife handle body.

The outer periphery of the end part of the cutter handle body clamping part is marked with a datum line, and the outer periphery of the end edge of the eccentric sleeve is marked with a scale line for dividing angles. So as to know the rotating angle of the eccentric sleeve and further know the eccentric amount.

The fan-shaped angle of the notch is between 120 and 130 degrees, the angle is an appropriate angle, is not required to be required in size, and can be adjusted according to the design requirement of a product; the length of the opening is smaller than the length of the external thread sleeve and the connecting parts are reserved at the two ends of the opening on the external thread sleeve, the length of the opening can be only limited by the condition that the two side fixing screws can be accommodated, namely the length of the opening is larger than the sum of the distance between the two side fixing screws and the radius of the two side fixing screws, and the connecting parts are reserved at the two ends of the opening of the external thread sleeve and are used for guaranteeing the strength requirement of the external thread sleeve.

The eccentric sleeve and the knife handle body are matched together, the eccentric sleeve is rotated to realize the offset of the knife and the center of the knife handle, the purpose of adjusting the machining amount of the knife is achieved, the adjustable offset is large, the adjustment is convenient, and the rigidity of the clamped knife is strong; the micro-adjustment can be realized through the scale marks, and the cutter adjustment is accurate and convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a partial view of fig. 1 taken along direction B.

Fig. 4 is a perspective view of the eccentric sleeve.

Fig. 5 is a front view of the eccentric sleeve.

Fig. 6 is a left side view of the eccentric sleeve.

In the figure: 1-a knife handle body; 2-eccentric sleeve; 3-side fixing screw; 4-cutting tool; 5-base line; 6-scale mark; 7-external thread sleeve; 8-end edge; 9-poking the notch; 10-a gap; a-offset.

Detailed Description

Referring to fig. 1 to 6, there is a tool shank body 1 formed by concentrically integrating an external taper portion connected to a spindle of a machine tool and a clamping portion for connection to a tool, the clamping portion of the tool shank body 1 has a center hole, the clamping portion of the tool shank body 1 is axially provided with two screw holes communicating with the center hole from an outer peripheral surface, in the screw holes are provided side fixing screws 3 by screwing, the side fixing screws 3 are countersunk head screws which are not higher than the peripheral surface of the tool shank body 1 after screwing, and the center hole of the tool shank body 1 is an internal screw hole; the eccentric sleeve 2 is formed by integrating an end edge 8 and an external thread sleeve 7, the external profile of the eccentric sleeve 2 is T-shaped, two poking gaps 9 which are positioned on the same diameter and are convenient for using tools to clamp and rotate the eccentric sleeve 2 are reserved on the outer edge of the end edge 8 of the eccentric sleeve 2, the periphery of the external thread sleeve 7 of the eccentric sleeve 2 is an external thread peripheral surface matched with an internal thread hole of the tool shank body 1, a center hole of the tool shank body 1 and a thread on the external thread sleeve 7 of the eccentric sleeve 2 are T-shaped threads matched, an inner hole of the external thread sleeve 7 is an eccentric unthreaded hole which is eccentric relative to the external thread peripheral surface, an offset a is arranged between the center line of the eccentric unthreaded hole and the center line of the external thread peripheral surface, the offset a can be designed to be 0.5mm, the offset can be increased according to needs, after the offset a is increased, the offset of the eccentric sleeve 2 relative to the tool shank body 1 per unit angle is increased, and the adjustment precision per unit angle is reduced accordingly, a notch 10 formed by cutting off the outer wall of the external thread sleeve 7 is arranged on one side surface of the unthreaded hole of the external thread sleeve 7 in the direction vertical to the peripheral surface of the external thread in the offset a direction, the fan-shaped angle of the notch 10 is designed to be 53 degrees +73 degrees, and when the offset a =0.5mm, the cutter can be changed between minus 0.2mm and 0.5 mm; the length of the gap 10 is smaller than that of the external thread sleeve 7, connecting parts are left at two ends of the gap 10 on the external thread sleeve 7, the eccentric sleeve 2 is screwed into the central hole of the knife handle body 1 through thread connection, the side fixing screw 3 is positioned in the range of the gap 10 of the eccentric sleeve 2, an adjusting gap is left between the inner side surface of the end edge 8 of the eccentric sleeve 2 and the end surface of the knife handle body 1, and the gap can be 0.5 mm; the outer periphery of the end part of the clamping part of the knife handle body 1 is marked with a reference line 5, and the outer periphery of the end edge 8 of the eccentric sleeve 2 is marked with a scale mark 6 for dividing the angle, so that the rotating angle of the eccentric sleeve 2 can be known conveniently, and the size of the eccentric amount a can be known.

The cutter 4 is placed in the eccentric unthreaded hole of the eccentric sleeve 2, the eccentric sleeve 2 is rotated to be positioned at a required eccentric position, the side fixing screw 3 is rotated to enable the tip to penetrate through the notch 10 to be pressed against the outer peripheral surface of the cutter 4 and screwed tightly, and the cutter 4 is eccentrically fixed with the cutter handle body 1.

Claims (5)

1. An adjustable side-fixing tool holder, which has a tool shank body composed of an outer cone part connected with a machine tool spindle and a clamping part for connecting with a tool, the clamping part of the tool shank body has a central hole, the clamping part of the tool shank body is provided with two threaded holes which are communicated with the central hole from the outer peripheral surface along the axial direction, and a side-fixing screw is arranged in the threaded holes through threaded connection, and is characterized in that: the center hole of the knife handle body (1) is an internal thread hole; in addition, an eccentric sleeve (2) which is integrally formed by an end edge (8) and an external thread sleeve (7) and has a T-shaped outer contour is arranged, the periphery of the external thread sleeve (7) of the eccentric sleeve (2) is an external thread peripheral surface matched with an internal thread hole of the knife handle body (1), an inner hole of the external thread sleeve (7) is an eccentric unthreaded hole which is eccentric relative to the external thread peripheral surface, a notch (10) formed by cutting off part of the outer wall of the external thread sleeve (7) is arranged on one vertical side surface of the external thread sleeve (7) in the direction of offset (a) from the external thread peripheral surface, the eccentric sleeve (2) is screwed into a central hole of the knife handle body (1) through threaded connection, a side fixing screw (3) is positioned in the range of the notch (10) of the eccentric sleeve (2), and an adjusting gap is reserved between the inner side surface of the end edge (8) of the eccentric sleeve (2) and the end surface of the knife handle body (1).

2. The adjustable side mounted tool shank of claim 1, wherein: two poking gaps (9) with the same diameter are reserved on the outer edge of the end edge (8) of the eccentric sleeve (2).

3. The adjustable side mounted tool shank of claim 1, wherein: the central hole of the knife handle body (1) and the thread on the external thread sleeve (7) of the eccentric sleeve (2) are matched T-shaped threads.

4. The adjustable side mounted tool shank of claim 1, wherein: the outer periphery of the end part of the clamping part of the tool handle body (1) is marked with a reference line (5), and the outer periphery of the end edge (8) of the eccentric sleeve (2) is marked with a scale mark (6) for dividing angles.

5. The adjustable side mounted tool shank of claim 1, wherein: the fan-shaped angle of the notch (10) is 120-130 degrees, the length of the notch (10) is less than that of the external thread sleeve (7), and connecting parts are reserved at two ends of the notch (10) on the external thread sleeve (7).

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