CN205270957U - Adjustable countersink - Google Patents

Abstract

The utility model relates to the field of mechanical processing props, and aims to provide an adjustable countersink. An adjustable countersinking tool, comprising: a countersinking tool body, a tool handle and a positioning mandrel coaxially arranged with the tool handle; the adjustable countersinking tool also includes: a tool rest connected to the lower end of the tool handle, and the lower end is connected to the countersinking tool The adjustment bar connected with the body and the locking screw; the knife handle is a Morse taper handle; one side of the knife holder is provided with an upper slope and a lower slope; the knife holder is provided with an inclined hole; The lower end is connected; the lower inclined surface is provided with a locking screw hole connected with the inclined hole; the adjustment bar is located in the inclined hole, the screw rod of the locking screw is threadedly connected with the locking screw hole and one end of the screw rod of the locking screw presses the adjustment bar; positioning The mandrel is detachably connected with the lower end of the knife holder. The adjustable countersink has high versatility, convenient production management and low cost.

Description

Adjustable Countersink

technical field

The utility model relates to the field of mechanical processing props, in particular to an adjustable countersink.

Background technique

Both the oil port joint of the hydraulic cylinder and the oil hole at the bottom of the cylinder need to be processed with a countersink on the sealing end face. , including a cutter body and a positioning guide mechanism arranged on the cutter body, the positioning guide mechanism includes a mandrel fixed on the front end of the cutter body coaxially with the cutter body, a rotating body is sleeved on the mandrel, and the rotating body It has an outer peripheral surface that fits in the positioning hole of the workpiece with clearance, and an anti-off structure with axial thrust fit between the core shafts of the rotating body. Traditional countersinks have the disadvantages of processing holes with different diameters, requiring different specifications of countersinks, troublesome production management and high cost. Therefore, an adjustable countersink with high versatility, convenient production management and low cost is designed. become an urgent problem to be solved.

Utility model content

The purpose of this utility model is to overcome the shortcomings of current countersinks that machining holes with different diameters require countersinks of different specifications, troublesome production management and high cost, and provide a kind of tool with high versatility, convenient production management and low cost. adjustable countersink.

Concrete technical scheme of the present utility model is:

An adjustable countersinking tool, comprising: a countersinking tool body, a tool handle, and a positioning mandrel coaxially arranged with the tool handle; the adjustable countersinking tool also includes: a tool rest connected to the lower end of the tool handle, and the lower end is connected to the countersinking tool The adjustment bar connected with the body and the locking screw; the handle is a Morse taper handle; one side of the knife holder is provided with an upper slope and a lower slope; the knife holder is provided with a slanted hole; The lower end runs through; the lower slope is provided with a locking screw hole connected to the inclined hole; the adjustment bar is located in the inclined hole, the screw rod of the locking screw is threadedly connected with the locking screw hole and one end of the screw rod of the locking screw presses the adjustment bar; positioning The mandrel is detachably connected with the lower end of the knife holder. When the adjustable countersink is in use, according to the needs of countersinking processing, a corresponding positioning mandrel is selected to be connected with the lower end of the knife holder, and the position of the adjustment bar in the inclined hole is adjusted and locked with screws. The adjustable countersink has high versatility, convenient production management and low cost.

As a preference, the adjustable countersink also includes a set screw: the positioning mandrel includes: a positioning segment and a mounting segment connected to the upper end of the positioning segment; The front end of the frame is provided with a set screw hole communicating with the installation counterbore; the installation section is located in the installation counterhole; the screw rod of the set screw is threadedly connected with the set screw hole and one end of the screw rod of the set screw presses the installation section. The positioning mandrel and tool holder are easy to assemble and disassemble.

Preferably, the cross-sectional shape of the adjusting bar is rectangular; the cross-sectional shape of the oblique hole is rectangular and matches the adjusting bar. It is more stable after the adjustment bar is locked.

Preferably, the included angle between the inclined hole and the axis of the handle is 40° to 50°; the lower inclined surface is parallel to the inclined hole; the included angle between the upper inclined surface and the lower inclined surface is 90°. It is beneficial for the adjustment bar to be stable and not shifted during countersinking, and it is convenient for the adjustment bar to be assembled and disassembled.

Compared with the prior art, the beneficial effect of the utility model is that the adjustable countersink has high versatility, convenient production management and low cost. The positioning mandrel and tool holder are easy to assemble and disassemble. The cross-sectional shape of the adjustment bar is rectangular; the cross-sectional shape of the oblique hole is rectangular and matches the adjustment bar, and the adjustment bar is more stable after being locked. The included angle between the inclined hole and the axis of the tool handle is 40° to 50°, the lower inclined surface is parallel to the inclined hole, and the included angle between the upper inclined surface and the lower inclined surface is 90°, which is beneficial for the adjustment bar to be stable and not shifted during countersinking. Conducive to the assembly and disassembly of the adjustment bar.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

In the figure: countersink body 1, tool handle 2, positioning mandrel 3, tool holder 4, adjustment bar 5, locking screw 6, set screw 7, upper bevel 8, lower bevel 9, inclined hole 10, locking screw Hole 11, positioning section 12, installation section 13, installation counterbore 14, tightening screw hole 15.

detailed description

Below in conjunction with shown in the accompanying drawings the utility model is further described.

As shown in accompanying drawing 1: an adjustable countersinking tool, comprising: a countersinking tool body 1, a handle 2, a positioning mandrel 3 coaxially arranged with the handle 2, a tool rest 4 welded to the lower end of the handle 2, the lower end The adjustment bar 5 welded with the countersink body 1, the locking screw 6, and the set screw 7; the tool handle 2 is a Morse taper handle; one side of the tool holder 4 is provided with an upper slope 8 and a lower slope 9; the tool holder 4 A slanted hole 10 is provided; the two ends of the slanted hole 10 respectively communicate with the upper slant 8 and the lower end of the tool holder 4; the lower slant 9 is provided with a locking screw hole 11 communicating with the slanted hole 10; the adjustment bar 5 is located in the slanted hole 10, The screw rod of the locking screw 6 is threadedly connected with the locking screw hole 11 and one end of the screw rod of the locking screw 6 presses the adjusting bar 5;

In this embodiment, the positioning mandrel 3 includes: a positioning section 12 and a mounting section 13 integrally connected to the upper end of the positioning section 12; the lower end of the tool holder 4 is provided with a mounting counterbore 14 whose diameter is in clearance with the diameter of the mounting section 13 ; The front end of the knife rest 4 is provided with the fastening screw hole 15 communicating with the installation counterbore 14; the installation section 13 is located in the installation counterbore 14; One end of the screw rod presses the mounting section 13. The cross-sectional shape of the adjusting bar 5 is rectangular; the cross-sectional shape of the oblique hole 10 is rectangular and is in clearance fit with the adjusting bar 5 . The included angle between the inclined hole 10 and the axis of the handle 2 is 45 degrees; the lower inclined surface 9 is parallel to the inclined hole 10; the included angle between the upper inclined surface 8 and the lower inclined surface 9 is 90 degrees.

When the adjustable countersink is in use, according to the needs of countersinking processing, select the positioning mandrel 3 with the corresponding diameter positioning section 12, insert the installation section 13 of the positioning mandrel 3 into the installation counterbore 14 and tighten it with the set screw 7, adjust Adjust the position of the bar 5 in the inclined hole 10 and lock it with screws.

The beneficial effects of the utility model are: the adjustable countersink has high versatility, convenient production management and low cost. The positioning mandrel and tool holder are easy to assemble and disassemble. The cross-sectional shape of the adjustment bar is rectangular; the cross-sectional shape of the oblique hole is rectangular and matches the adjustment bar, and the adjustment bar is more stable after being locked. The included angle between the inclined hole and the shaft axis is 45 degrees, the lower inclined surface is parallel to the inclined hole, and the included angle between the upper inclined surface and the lower inclined surface is 90 degrees. Assembly and disassembly.

It is obvious to those skilled in the art that the present utility model can be changed in many ways, and such changes are not considered to depart from the scope of the present utility model. All such modifications obvious to those skilled in the art are intended to be included within the scope of this claim.

Claims (4)

1. An adjustable countersinking tool, comprising: a countersinking tool body, a handle and a positioning mandrel coaxially arranged with the handle; it is characterized in that, the adjustable countersinking tool also includes: a knife connected to the lower end of the handle Frame, the adjustment bar connected to the countersink body at the lower end, and the locking screw; one side of the tool frame is provided with an upper slope and a lower slope; the tool frame is provided with a slanted hole; ;The lower inclined surface is provided with a locking screw hole connected with the inclined hole; the adjustment bar is located in the inclined hole, the screw rod of the locking screw is threadedly connected with the locking screw hole and one end of the screw rod of the locking screw presses the adjustment bar; the positioning mandrel It is detachably connected with the lower end of the knife holder. 2. The adjustable countersink according to claim 1, characterized in that it also includes a set screw: the positioning mandrel includes: a positioning segment and a mounting segment connected to the upper end of the positioning segment; the lower end of the tool holder is provided with a diameter and a mounting segment The installation counterbore with matching diameter; the front end of the tool holder is provided with a set screw hole communicating with the installation counter hole; the installation section is located in the installation counter hole; the screw rod of the set screw is threadedly connected with the set screw hole and the screw rod of the set screw One end presses the mounting section. 3. The adjustable countersink according to claim 1 or 2, wherein the cross-sectional shape of the adjustment bar is rectangular; the cross-sectional shape of the oblique hole is rectangular and matches the adjustment bar. 4. The adjustable countersink according to claim 1 or 2, wherein the angle between the inclined hole and the axis of the handle is 40 to 50 degrees; the lower slope is parallel to the slope; the upper slope is The angle between it and the lower slope is 90 degrees.