CN204724875U - Brill, the anti-spot-facing cutter of boring - Google Patents

Abstract

The utility model discloses a countersinking tool for drilling and boring, which comprises a cutter bar and a blade holder assembly arranged at the lower end of the cutter holder, and is characterized in that the blade holder assembly includes a blade holder, a The blade on the upper surface and the cross pin crossing the blade seat, the cross pin part is placed in the axial mounting hole of the blade seat; the diameter of the lower end of the knife rod is the same as the size of the processed through hole For adaptation, the end of the knife rod has a mounting plane, and an arc groove is opened on at least one side of the mounting plane. When in use, pass the cutter bar through the processed through hole, then install the blade holder assembly on the lower end of the cutter holder, and rotate the cutter holder so that the cross pin falls into the arc groove at the end of the cutter rod for positioning, and is driven by the cross pin during rotation processing And pull the insert seat for spot facing. Using this tool to process such countersinking not only guarantees its shape and position accuracy, but also is flexible and convenient to use, and the manufacture is not complicated.

Description

Drilling, boring countersinking tools

technical field

The utility model relates to the field of mechanical processing, in particular to the field of cutting tools, in particular to a drilling and boring countersinking tool.

Background technique

For large machine tool bases and box parts, when designing the skirt fixing holes, in order to prevent the fasteners from interfering with other parts and to ensure that the contact surface of the fasteners is flat, the designer often countersinks the through holes. . However, processing such parts not only requires a special custom-made lengthened drill bit, but also after the drill bit is lengthened, not only the position accuracy of the hole is affected, but the processing efficiency is also extremely low. So it is very necessary to find a clever way to process such holes, so as to ensure the quality of parts and improve production efficiency.

Contents of the invention

The utility model aims to solve the above-mentioned technical problems existing in the prior art, and aims to provide a drilling, boring and countersinking tool with high machining accuracy and flexible and convenient use.

In order to solve the above-mentioned problems, the utility model adopts the following technical solutions: drilling and boring countersinking tools include a tool bar and a blade seat assembly arranged at the lower end of the tool bar, and it is characterized in that the blade seat assembly includes a blade seat, The blade inlaid on the upper surface of the blade seat and the cross pin crossing the blade seat, the cross pin part is placed in the axial mounting hole of the blade seat; the diameter of the lower end of the knife rod is the same as The size of the processed through hole is suitable, and the end of the tool rod has a mounting plane, and an arc groove is opened on at least one side of the mounting plane.

The tool for drilling, boring and countersinking of the utility model, when in use, passes the tool bar through the processed through hole, then installs the blade seat assembly on the lower end of the tool bar, and rotates the tool bar so that the horizontal pin falls into the arc at the end of the tool bar It is positioned in the groove, and the cross pin drives and pulls the insert seat for spot facing during rotary machining. Using this tool to process such countersinking not only guarantees its shape and position accuracy, but also is flexible and convenient to use, and the manufacture is not complicated.

As an improvement of the utility model, circular arc grooves are provided on both sides of the installation plane, which can be flexibly selected for different installation directions of the blades.

As a further improvement of the utility model, the blades are in a group, and are evenly distributed on the upper surface of the blade seat. It is advisable to use 3-4 blades.

Description of drawings

Fig. 1 is the structural representation of the utility model drilling, boring countersinking tool.

Fig. 2 is a schematic structural view of the blade holder assembly of the present invention.

Fig. 3 is a structural schematic diagram of the utility model cutter bar.

Fig. 4 is a right side view of Fig. 3 .

Fig. 5 is a schematic diagram of the use state of the utility model.

Detailed ways

Referring to FIG. 1 , the drilling and countersinking tool of the present utility model includes a tool holder 1 and a blade seat assembly 12 arranged at the lower end of the tool holder 1 .

Referring to Fig. 2, the blade seat assembly 12 includes a blade seat 3, a blade 2 inlaid on the upper surface of the blade seat 3, and a cross pin 4 crossing the blade seat 3, and the cross pin 4 is partially positioned In the axial mounting hole 11 of the blade seat 3; the number of the blades 2 is four, which are evenly distributed on the upper surface of the blade seat 3.

Referring to Figures 3 and 4, the diameter of the lower end of the cutter bar 1 is adapted to the size of the processed through hole, and the end of the cutter bar 1 has a mounting plane 8, which is respectively set on both sides of the mounting plane 8. There are arc grooves 9,10.

With reference to Fig. 5, the working process of the present utility model is as follows:

1. Install the tool bar 1 on the machine tool spindle 5, and the end of the tool bar 1 passes through the processing through hole on the skirt 7 of the processed part 6 from top to bottom.

2. Install the blade holder assembly 12 on the lower end of the cutter bar 1, insert the axial mounting hole 11 of the blade holder into the cutter holder 1, and make the installation plane of the cutter holder 1 face the horizontal pin 4.

3. Rotate the blade seat 3 so that the horizontal pin 4 falls into the arc groove 9 or 10 (depending on the direction of rotation of the blade) for positioning.

4. Turn on the switch of the machine tool, the machine tool spindle 5 drives the tool bar 1 to rotate, and the cross pin 4 drives and pulls the blade seat 3 to carry out countersinking processing on the bottom surface of the skirt edge 7 of the processed part 6 .

It should be understood that: the above embodiments are only descriptions of the utility model, rather than limitations of the utility model, and any inventions that do not exceed the spirit of the utility model fall within the protection scope of the utility model.

Claims (4)

1. Drilling and boring back countersinking tools, comprising a tool holder (1) and a blade holder assembly (12) arranged at the lower end of the cutter holder (1), characterized in that the blade holder assembly (12) includes a blade holder (3), the blade (2) inlaid on the upper surface of the blade seat (3) and the horizontal pin (4) crossing the blade seat (3), the horizontal pin (4) part is placed on the In the axial mounting hole (11) of the blade seat (3); the diameter of the lower end of the cutter rod (1) is adapted to the size of the processed through hole, and the end of the cutter rod (1) has a mounting plane (8), arc grooves (9, 10) are opened on at least one side of the installation plane (8). 2. The drilling, boring and countersinking tool according to claim 1, characterized in that arc grooves (9, 10) are opened on both sides of the mounting plane (8). 3. The drilling, boring and countersinking tool according to claim 1 or 2, characterized in that the blades (2) are in a group and evenly distributed on the upper surface of the blade seat (3). 4. The tool for drilling and boring countersinking as claimed in claim 3, characterized in that there are 3-4 blades (2).