An improved boring bar for boring mixing cylinders

Abstract

The utility model relates to the field of mechanical processing equipment, in particular to an improved boring bar for boring a mixing cylinder, comprising a boring bar body, a clamping sleeve and a tightening screw, wherein the boring bar body is provided with a chamfered surface at its suspension end, and an oblique insertion hole is obliquely provided from the chamfered surface to the upper surface of the boring bar body; the clamping sleeve is formed by splicing two completely identical half blocks with L-shaped inner walls, the outer wall of the spliced ​​clamping sleeve is circular, and the inner cavity thereof is square with a notch; the clamping sleeve is placed in the oblique insertion hole of the boring bar body, the tightening screw screwed on the boring bar body can contact the outer wall of the clamping sleeve, the clamping sleeve can clamp the square tool handle of the boring tool and is tightened by the tightening screw so that the clamping sleeve is fixedly connected to the boring bar body. The utility model improves the boring bar used for boring a mixing cylinder so that the boring cutter can meet the needs of boring holes in the mixing cylinder and boring end faces after being installed in place at one time and is easy to rotate and adjust, thereby improving the boring accuracy and operation efficiency of the mixing cylinder.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing equipment, in particular to an improved boring bar used for boring a mixing cylinder. Background Art

[0002] The two ends of the mixing cylinder of the engineering mixing main machine are respectively provided with mounting holes for installing the mixing main shaft. Because the mounting holes at both ends have larger diameters and higher requirements for dimensional accuracy, coaxiality, and verticality with the end plates at both ends, it is generally necessary to install a boring tool on both ends of the double-head boring machine used for the mixing cylinder to bore the mounting holes and end faces of the mixing cylinder. The boring tool needs to be fixed by a boring bar, and the boring bar is connected to the power head of the boring machine. The commonly used boring bar installation method for boring tools is generally divided into horizontal installation or vertical installation. The difference between horizontal installation and vertical installation is whether the handle of the boring tool is perpendicular to or parallel to the center line of the boring bar. For a single boring hole or a single boring end face, a horizontally installed or vertically installed boring tool can be used. However, for both boring holes and boring end faces on a mixing cylinder, it is difficult to ensure the relevant accuracy if the boring tool is installed in batches. Therefore, a boring bar that can take into account both horizontal and vertical installation of the boring tool is required, so that the boring tool can be installed in place at one time to meet the needs of boring holes and boring end faces. In addition, the corresponding clamping holes on the shank of the boring tool and the boring bar are mostly square, which is not conducive to rotating and adjusting the blade angle when installing the boring tool, thereby affecting the boring accuracy and boring tool installation efficiency. In view of this, it is necessary to improve the boring bar used for boring mixing cylinders. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model discloses an improved boring bar for boring a mixing cylinder, comprising a boring bar body, a clamping sleeve and a tightening screw, wherein the boring bar body is provided with a chamfered surface at its suspension end, and an oblique insertion hole is obliquely provided from the chamfered surface to the upper surface of the boring bar body; the clamping sleeve is formed by splicing two completely identical half blocks with L-shaped inner walls, the outer wall of the spliced ​​clamping sleeve is circular, and the inner cavity thereof is square with a notch; the clamping sleeve is placed in the oblique insertion hole of the boring bar body, and the tightening screw screwed on the boring bar body can abut against the outer wall of the clamping sleeve, the clamping sleeve can clamp the square tool handle of the boring tool and be tightened by the tightening screw so that the clamping sleeve is fixedly connected to the boring bar body. The utility model improves a boring bar used for boring a mixing cylinder, a circular oblique insertion hole is arranged near the suspension end of the boring bar body, and a split clamping sleeve with an "outer circle and inner square" shape which can clamp a boring tool is arranged in the oblique insertion hole and is tightened by a tightening screw, so that the clamped boring tool is obliquely fixed to the boring bar body to take into account the lateral and longitudinal forces of the boring tool and the position adjustment in two directions, so that the boring tool can meet the needs of boring the mixing cylinder hole and the needs of boring the end face after being installed in place once; and the square handle of the boring tool is conveniently clamped and rotated and adjusted by arranging the clamping sleeve with an outer circle and inner square shape, so as to improve the installation efficiency of the boring tool, thereby improving the boring accuracy and working efficiency of the mixing cylinder.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The improved boring bar for boring a mixing cylinder is used for clamping a boring tool for boring a mixing cylinder and can be locked with a power head of the boring agitator. The characteristic is that it comprises a boring bar body, a clamping sleeve and a tightening screw. The boring bar body is a rod-shaped body, one end of which is set as a connecting end, and the other end of which is set as a hanging end and a chamfered surface is provided on the hanging end. The chamfered surface is formed by obliquely cutting off a part of the end face of the hanging end from the lower surface of the boring bar body, and an oblique insertion hole is obliquely provided from the chamfered surface to the upper surface of the boring bar body. The clamping sleeve is a split clamping sleeve, which is placed in the oblique insertion hole of the boring bar body. The tightening screw screwed on the boring bar body can contact the outer wall of the clamping sleeve. The clamping sleeve can clamp the square handle of the boring tool and is tightened by the tightening screw to fix the clamping sleeve on the boring bar body.

[0006] The oblique insertion hole is a round hole.

[0007] The clamping sleeve includes a first half block and a second half block. The first half block and the second half block are two identical L-shaped block components divided axially symmetrically from a cylinder. The outer walls of the first half block and the second half block are both semicircular arc surfaces, and the inner walls of the first half block and the second half block are both L-shaped surfaces composed of two inner side surfaces perpendicular to each other.

[0008] The outer wall radius of the first half block and the second half block matches the radius of the oblique insertion hole of the boring bar body. When the first half block and the second half block are assembled into a clamping sleeve to clamp the square handle of the boring tool, the clamping sleeve can be inserted into the oblique insertion hole and the first half block and the second half block do not conflict with each other.

[0009] The L-shaped surfaces of the inner walls of the first half block and the second half block are both provided with anti-skid patterns, and the anti-skid patterns are diamond-shaped ridges or spherical convex points.

[0010] The boring bar body is made of a columnar rod, the left and right sides of which are two parallel side planes, and a plurality of screw holes are symmetrically arranged from the two side planes to the oblique insertion hole, and the plurality of screw holes are perpendicular to the center line of the oblique insertion hole and penetrate the oblique insertion hole.

[0011] The clamping screws are in the form of a plurality of pieces, which are screwed onto a plurality of screw holes of the boring bar body.

[0012] The boring bar body is provided with a connecting seat at the connecting end for locking with the power head of the boring mixing cylinder, and a plurality of mounting holes are dispersedly provided on the connecting seat.

[0013] From the above description, it can be seen that the advantage of the improved boring bar for boring a mixing cylinder provided by the utility model is that a circular oblique insertion hole is provided near the suspension end of the boring bar body, and a split clamping sleeve with an "outer circle and inner square" shape for clamping the boring tool is provided in the oblique insertion hole and is tightened by a tightening screw. First, the clamped boring tool is fixedly connected to the boring bar body at an angle, which can take into account the lateral and longitudinal forces of the boring tool and the position adjustment in two directions, so that the boring tool can meet the needs of boring holes in the mixing cylinder and boring end faces after being installed in place once, which can improve the working efficiency and boring accuracy; second, by setting a clamping sleeve with an outer circle and an inner square, it is also convenient to clamp and rotate the square handle of the boring tool, which can improve the installation efficiency of the boring tool; third, the clamping sleeve can be made into multiple spare parts with the same outer circle diameter and different square sizes of the inner cavity, so that the square handles of boring tools of other sizes can be clamped without replacing the boring bar, so as to meet the convenience of replacing boring tools when boring other products. The utility model can improve the boring accuracy and working efficiency of the mixing cylinder by improving the boring bar used for boring the mixing cylinder. The utility model has a reasonable design, a simple structure, a low cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a general schematic diagram of an improved boring bar for boring a mixing cylinder according to the utility model;

[0015] Figure 2 for Figure 1 A-direction schematic diagram in FIG.

[0016] Figure 3 for Figure 2 A schematic diagram of the B direction in FIG.

[0017] Figure 4 It is an enlarged schematic diagram of the boring bar body;

[0018] Figure 5 It is an enlarged schematic diagram of the clamping sleeve.

[0019] Reference numerals:

[0020] 1 boring bar body; 11 connecting end; 12 hanging end; 13 side plane; 14 chamfered surface; 15 oblique insertion hole; 2 clamping sleeve; 21 first half block; 22 second half block; 20 anti-slip groove; 3 tightening screw; 900 boring tool. DETAILED DESCRIPTION

[0021] The present invention is further described below through specific implementation methods.

[0022] like Figures 1 to 4As shown, the utility model discloses an improved boring bar for boring a mixing cylinder, which is used to clamp a boring tool 900 for boring a mixing cylinder and can be locked with a power head for boring a mixing cylinder, and comprises a boring bar body 1, a clamping sleeve 2 and a tightening screw 3. The boring bar body 1 is a rod-shaped body prepared from a columnar rod, one end of which is set as a connecting end 11, and the other end of which is set as a hanging end 12, and a chamfered surface 14 is provided at the hanging end 12, and the chamfered surface 14 is formed by obliquely cutting off a part of the end surface of the hanging end 12 toward the lower surface of the boring bar body 1, and an oblique insertion hole 15 is obliquely provided from the oblique cutting surface 14 to the upper surface of the boring bar body 1, and the oblique insertion hole 15 is a round hole. The left and right sides of the boring bar body 1 are two parallel side planes 13, and a plurality of screw holes are symmetrically arranged from the two side planes 13 to the oblique insertion hole 15, and the plurality of screw holes are perpendicular to the center line of the oblique insertion hole 15 and penetrate the oblique insertion hole 15. The boring bar body 1 is provided with a connecting seat at the connecting end 11 for locking with the power head of the boring mixing cylinder, and a plurality of mounting holes are dispersedly arranged on the connecting seat.

[0023] like Figures 1 to 5 As shown, the clamping sleeve 2 described in the utility model is a split type clamping sleeve, and the clamping sleeve 2 includes a first half block 21 and a second half block 22. The first half block 21 and the second half block 22 are two identical L-shaped block components that are symmetrically split along the axial direction from a cylindrical body. The outer walls of the first half block 21 and the second half block 22 are both semicircular arc surfaces, and the inner walls of the first half block 21 and the second half block 22 are both L-shaped surfaces composed of two inner side surfaces that are perpendicular to each other. The outer wall radius of the first half block 21 and the second half block 22 matches the radius of the oblique insertion hole 15 of the boring bar body 1. When the first half block 21 and the second half block 22 are assembled into the clamping sleeve 2 to clamp the square handle of the boring tool 900, the clamping sleeve 2 can be inserted into the oblique insertion hole 15 and the first half block 21 and the second half block 22 do not conflict with each other. The L-shaped surfaces of the inner walls of the first half block 21 and the second half block 22 are both provided with anti-skid patterns 20 , and the anti-skid patterns 20 are diamond-shaped ridges or spherical convex points. The anti-skid patterns 20 of the present embodiment are diamond-shaped ridges.

[0024] like Figures 1 to 3 As shown, the jacking screws 3 described in the utility model are several pieces, and the several jacking screws 3 are screwed on several screw holes of the boring bar body 1. The jacking screws 3 screwed on the boring bar body 1 can contact the outer wall of the clamping sleeve 2, and the clamping sleeve 2 can clamp the square handle of the boring tool 900 and be tightened by the jacking screws 3 so that the clamping sleeve 2 is fixed to the boring bar body 1. If it is necessary to fine-tune the angle of the blade relative to the center line of the boring bar body 1 when installing the boring tool 900, the jacking screws 3 can be loosened and the clamping sleeve 2 can be rotated and then tightened with the jacking screws 3.

[0025] The utility model improves the boring bar used for boring a mixing cylinder, and a circular oblique insertion hole 15 is provided on the boring bar body 1 adjacent to the suspension end 12, and a split clamping sleeve 2 with an "outer circle and inner square" shape for clamping a boring tool is provided in the oblique insertion hole 15 and is tightened by a tightening screw 3, so that the clamped boring tool 900 is obliquely fixed to the boring bar body 1 to take into account the lateral and longitudinal forces of the boring tool 900 and the position adjustment in two directions, so that the boring tool 900 can meet the needs of boring a mixing cylinder and the needs of boring an end face after being installed in place once; and by providing the clamping sleeve 2 with an outer circle and inner square shape, it is also convenient to clamp the square handle of the boring tool and perform rotation adjustment to improve the installation efficiency of the boring tool, thereby improving the boring accuracy and working efficiency of the mixing cylinder.

[0026] The above is only a specific embodiment of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantial changes to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. An improved boring bar for boring a mixing cylinder, which is used to clamp a boring tool (900) for boring a mixing cylinder, and can be locked with a power head for boring a mixing cylinder, characterized in that: The invention comprises a boring bar body (1), a clamping sleeve (2) and a tightening screw (3). The boring bar body (1) is a rod-shaped body, one end of which is set as a connecting end (11), and the other end of which is set as a suspension end (12). A chamfered surface (14) is provided on the suspension end (12). An oblique insertion hole (15) is obliquely provided from the chamfered surface (14) to the upper surface of the boring bar body (1). The clamping sleeve (2) is a split-type clamping sleeve. The clamping sleeve (2) is placed in the oblique insertion hole (15) of the boring bar body (1). The tightening screw (3) screwed on the boring bar body (1) can contact the outer wall of the clamping sleeve (2). The clamping sleeve (2) can clamp the square handle of the boring tool (900) and be tightened by the tightening screw (3).

2. The improved boring bar for boring a mixing cylinder according to claim 1, characterized in that: The oblique insertion hole (15) is a round hole.

3. The improved boring bar for boring a mixing cylinder according to claim 2, characterized in that: The clamping sleeve (2) comprises a first half block (21) and a second half block (22), wherein the first half block (21) and the second half block (22) are two identical L-shaped block components which are symmetrically divided along the axial direction from a cylindrical body, the outer walls of the first half block (21) and the second half block (22) are both semicircular arc surfaces, and the inner walls of the first half block (21) and the second half block (22) are both L-shaped surfaces composed of two inner side surfaces which are perpendicular to each other.

4. The improved boring bar for boring a mixing cylinder according to claim 3, characterized in that: The outer wall radius of the first half block (21) and the second half block (22) matches the radius of the oblique insertion hole (15) of the boring bar body (1); when the first half block (21) and the second half block (22) are assembled into a clamping sleeve (2) to clamp the square handle of the boring tool (900), the clamping sleeve (2) can be inserted into the oblique insertion hole (15) and the first half block (21) and the second half block (22) do not conflict with each other.

5. The improved boring bar for boring a mixing cylinder according to claim 4, characterized in that: The L-shaped surfaces of the inner walls of the first half block (21) and the second half block (22) are both provided with anti-skid patterns (20), and the anti-skid patterns (20) are rhombus-shaped ridges or spherical convex points.

6. The improved boring bar for boring a mixing cylinder according to claim 4, characterized in that: The boring bar body (1) is made of a columnar rod, and its left and right sides are two parallel side planes (13), and a plurality of screw holes are symmetrically arranged from the two side planes (13) to the oblique insertion hole (15), and the plurality of screw holes are perpendicular to the center line of the oblique insertion hole (15) and penetrate the oblique insertion hole (15).

7. The improved boring bar for boring a mixing cylinder according to claim 6, characterized in that: The clamping screws (3) are composed of a plurality of pieces, and the plurality of clamping screws (3) are screwed onto a plurality of screw holes of the boring bar body (1).

8. The improved boring bar for boring a mixing cylinder according to claim 1, characterized in that: The boring bar body (1) is provided with a connecting seat at the connecting end (11), and a plurality of mounting holes are dispersedly provided on the connecting seat.

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