CN204430377U - A kind of brill boring gang tool for hole machined - Google Patents

Abstract

The utility model discloses a combined drilling and boring tool for hole processing, which comprises: a tool body, the front end of which is provided with a first notch, and the rear end is rotatably connected with the main shaft of a machine tool; a blade includes a first blade and a second blade, The first blade is arranged as a pair, and a pair of first blades are arranged at the first notch, and are arranged away from and close to the central axis of the cutter body respectively, and the second blade is arranged on the cutter body away from the installation position of the pair of first blades, And the area of the circle formed by the rotation of the second blade around the central axis of the cutter body is greater than the area of the circle formed by the rotation of a pair of first blades around the central axis of the cutter body. The utility model has the beneficial effects of simultaneously drilling and boring, reducing the use cost, increasing the production efficiency and improving the processing quality.

Description

A combined drilling and boring tool for hole processing

technical field

The utility model relates to a drilling and boring combined tool. More specifically, the utility model relates to a combined drilling and boring tool used for rapid machining of various shallow holes with high precision in machining.

Background technique

In mechanical processing, for some holes with small depth-to-diameter ratio, a large number of holes, and high precision requirements, the most commonly used method at present is to drill holes first, and then ream or bore holes. However, there are some defects in this traditional processing method. First, at least two to three knives must be prepared to process a hole, which virtually increases the inventory of the knives, resulting in higher processing costs; secondly, because the processing of a hole requires at least It needs two processes to complete. After the hole is drilled, the boring tool or reamer needs to be replaced to bore or ream the hole. This increases the time for tool change. When the next workpiece is processed, the tool needs to be changed back, which again To increase the tool change time once, the whole process will increase two tool changes, resulting in a reduction in production efficiency.

Utility model content

It is an object of the present invention to solve at least the aforementioned drawbacks and to provide at least the advantages to be described later.

Another object of the utility model is to provide a combined drilling and boring tool capable of adjusting the radial dimension of the second blade, which can realize fine adjustment of the radial dimension.

In order to achieve these objects and other advantages according to the present utility model, a combined drilling and boring tool for hole processing is provided, including:

The cutter body is provided with a first notch at its front end, and its rear end is rotatably connected with the main shaft of the machine tool;

A blade, which includes a first blade and a second blade, the first blade is arranged as a pair, and the pair of first blades are arranged at the first notch, respectively far away from and close to the central axis of the cutter body, the first The two blades are arranged on the cutter body away from the installation position of the pair of first blades, and the area of the circle formed by the rotation of the second blade around the central axis of the cutter body is larger than that of the circle formed by the rotation of the pair of first blades around the cutter body. The area of the circle formed by the rotation of the central axis of the body.

Preferably, in the combined drilling and boring tool for hole machining, the second blade is arranged on the outer wall of the cutter body, and is radially and movably connected with the outer wall of the cutter body through a connecting piece.

Preferably, in the combined drilling and boring tool for hole processing, the connecting piece is a radial adjustment screw, and the two ends of the radial adjustment screw are respectively provided with a left-handed thread and a right-handed thread. Two ends of the screw are respectively connected to the outer wall of the cutter body and the second blade.

Preferably, in the combined drilling and boring tool for hole processing, a tool holder is provided between the second blade and the outer wall of the cutter, and a second gap is provided on the tool holder, and the second blade passes through the The second fastener is installed at the second notch of the tool holder, and the tool holder is installed on the cutter body through the third fastener.

Preferably, in the combined drilling and boring tool for hole processing, the cutter body is provided with an arc-shaped notch at a position close to the second blade, and the arc-shaped notch is connected to the second blade. The positions of the two blades partially overlap.

Preferably, in the combined drilling and boring tool for hole machining, a pair of first blades are respectively arranged on both sides of the central axis of the cutter body, and the central axes of the pair of first blades coincide.

Preferably, in the combined drilling and boring tool for hole processing, the inner edge of one first blade is located at the central axis of the cutter body, and the outer edge of the other first blade is located at the outer edge of the cutter body place.

Preferably, in the combined drilling and boring tool for hole processing, a pair of first blades are mounted on the first notch through a first fastener.

Preferably, in the combined drilling and boring tool for hole processing, the diameter of the circle formed by the rotation of the second blade around the central axis of the cutter body is smaller than that of a pair of first blades around the central axis of the cutter body. The diameter of the circle formed by rotation is 0.2-0.3mm larger.

Preferably, in the combined drilling and boring tool for hole processing, an internal cooling hole is provided at the central axis of the rear end of the cutter body, and an internal cooling hole is provided at the front end of the cutter body along the center of the cutter body. Two axially symmetrical water outlet holes, the inner cooling hole communicates with the two water outlet holes through the coolant inside the cutter body.

The utility model at least includes the following beneficial effects: since the first blade and the second blade are all arranged on the cutter body, after the cutter body is connected with the machine tool spindle, the first blade and the machine tool spindle are concentric because the central axis of the cutter body is concentric with the machine tool spindle. The second blade follows the main shaft of the machine tool and rotates around the central axis of the cutter body, so that the two kinds of blades can simultaneously cut the hole, and the area of the circle formed by the rotation of the second blade around the central axis of the cutter body is larger than that of a pair of first The area of the circle formed by the rotation of the blade around the central axis of the cutter body, that is, the diameter of the circle drawn by the second blade is longer than the diameter of the circle drawn by the pair of first blades, so that the combined drilling and boring tool can be used in rough drilling. At the same time, it can also finely bore holes and improve the production efficiency of hole processing; due to the radial adjustment screw structure set between the second blade and the cutter body, the distance between the second blade and the cutter body can be changed to realize the adjustment of the radial dimension. fine-tuning.

Other advantages, objectives and features of the utility model will partly be embodied through the following description, and partly will be understood by those skilled in the art through the research and practice of the utility model.

Description of drawings

Fig. 1 is the front view of the combined drilling and boring tool for hole processing described in the utility model;

Fig. 2 is a bottom view of the combined drilling and boring tool for hole processing according to the present invention.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

It should be understood that terms such as "having", "comprising" and "including" used herein do not denote the presence or addition of one or more other elements or combinations thereof.

As shown in Figure 1, the utility model provides a combined drilling and boring tool for hole processing, including:

Cutter body 7, its front end is provided with the first notch, and rear end is connected with the main shaft of machine tool in rotation; Blade, it comprises first blade 1 and second blade 3, and described first blade 1 is arranged as a pair, a pair of first blade It is arranged at the first notch, respectively away from and close to the central axis of the cutter body 7, wherein the function of a first blade arranged away from the central axis of the cutter body 7 is to complete the forming of the aperture, close to the center of the cutter body 7 The effect of another first blade that shaft is provided with is to be used for finishing the cutting of drill, and described second blade 3 is arranged on described cutter body 7 and is far away from the mounting position of a pair of first blade 1, and described second blade 3 The area of the circle formed by rotating around the central axis of the cutter body 7 is greater than the area of the circle formed by the rotation of a pair of first blades 3 around the central axis of the cutter body 7, and the diameter of the circle formed by the rotation of the second blade 3 Greater than the diameter of the circle formed by the rotation of the first blade 1, that is, the diameter of the boring is greater than the diameter of the drilled hole.

As shown in FIG. 1 , the second blade 3 is arranged on the outer wall of the cutter body 7 and is radially and movably connected with the outer wall of the cutter body 7 through a connecting piece. In this way, fine adjustment of the radial dimension between the second blade 3 and the cutter body 7 can be realized. Moreover, this way is only a way to meet the radially movable connection between the second blade 3 and the outer wall of the cutter body 7, but it is not limited thereto.

As shown in Figure 2, the connector is a radial adjustment screw 8, the two ends of the radial adjustment screw 8 are respectively provided with a left-handed thread and a right-handed thread, and the two ends of the radial adjustment screw 8 are respectively connected to the knife The outer wall of the body 7 and the second blade 3. The setting method of the double-headed opposite direction thread of the radial adjustment screw 8 can allow the radial adjustment screw 8 to rotate in one direction, allowing the cutter body 7 and the second blade 3 to approach or move away from each other at the same time, so as to speed up the radial adjustment. speed.

As shown in Figure 1, a tool holder 6 is provided between the second blade 3 and the outer wall of the cutter body 7, and a second gap is provided on the tool holder 6, and the second blade 3 passes through the second fastener 4 It is installed at the second notch of the tool holder 6 , and the tool holder 6 is installed on the cutter body through the third fastener 5 . This technical scheme has the advantage of modular structure, is provided with tool holder 6 between second blade 3 and cutter body 7, and second blade 3 is installed on the tool holder 6 by second fastener 4, and tool holder 6 The setting can better fix the second blade 3, and the tool holder 6 is installed on the cutter body 7 through the third fastener 5. This setting method can ensure that the second blade 3 is broken and the blade is replaced, and the tool holder 6 is broken. The cutter holder 6 does not need to replace the cutter body 7 as a whole due to partial damage. Moreover, the fastener includes various implementation forms, for example, screws, bolts, and snap buttons.

As shown in Figure 1, the cutter body 7 is provided with an arc-shaped notch 11 at a position close to the second blade 3, and the arc-shaped notch 11 is in the same position as the second blade 3. overlapping. Adopting this solution can increase the space for chip removal, and prevent the chips generated by the second blade 3 from being stuck in the toolholder 6 during cutting, thereby chipping the cutting edge of the second blade 3 .

As shown in FIG. 1 , a pair of first blades 1 are separately arranged on both sides of the central axis of the cutter body 7 , and the central axes of the pair of first blades 1 coincide. This solution ensures that the pair of first blades 1 are concentric and coaxial when drilling.

As shown in FIG. 1 , the inner edge of one first blade 1 is located at the central axis of the cutter body 7 , and the outer edge of the other first blade 1 is located at the outer edge of the cutter body 7 . Adopting this scheme can allow the first blade positioned at the outer edge of the cutter body 7 to complete the forming of the hole during the cutting process, and the first blade positioned at the central axis of the cutter body 7 completes the cutting of the drill during the cutting process. And, this arrangement mode of a pair of first blades 1 is the standard disposition of drill bit, if the hole of processing is bigger, can increase blade between a pair of first blades according to actual situation.

As shown in FIG. 1 , a pair of first blades 1 are mounted on the first notch through a first fastener 2 . The first notch can ensure that the first blade 1 is better installed on the cutter body 7 .

As shown in Figure 1, the diameter of the circle formed by the rotation of the second blade 3 around the central axis of the cutter body 7 is larger than the diameter of the circle formed by the rotation of a pair of first blades 1 around the central axis of the cutter body 7. 0.2-0.3mm larger. Adopting this scheme can ensure that the diameter of the boring hole is larger than the diameter of the drilling hole.

As shown in Figures 1 and 2, an internal cooling hole 9 is provided at the central axis of the rear end of the cutter body 7, and two cooling holes 9 symmetrical to the central axis of the cutter body 7 are provided at the front end of the cutter body 7. The water outlet hole 10 , the inner cooling hole 9 and the two water outlet holes 10 communicate through the coolant inside the cutter body 7 . When the blade is drilling and boring, a lot of heat will be generated, which will affect the cutting. This solution can cool down the processing part when the blade is cutting.

The number of devices and the scale of processing described here are used to simplify the description of the present invention. The application, modification and variation of the utility model combined drilling and boring tool will be obvious to those skilled in the art.

As mentioned above, according to the present invention, since the first blade and the second blade are simultaneously arranged on one cutter body, it has the effects of reducing the use cost and improving the production efficiency.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the description and the implementation, and it can be applied to various fields suitable for the present utility model. For those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1., for a brill boring gang tool for hole machined, it is characterized in that, comprising:

Cutter hub, its front end is provided with the first breach, and rear end is rotatably connected with machine tool chief axis;

Blade, it comprises the first blade and the second blade, described first blade is set to a pair, a pair first blades are arranged on described first indentation, there, arrange away from the central shaft close to cutter hub respectively, described second blade is arranged on the installed position away from a pair first blades on described cutter hub, and described second blade rotates around the central shaft of described cutter hub the area of circle formed is greater than a pair first blades to rotate the circle formed area around the central shaft of described cutter hub.

2. as claimed in claim 1 for the brill boring gang tool of hole machined, it is characterized in that, described second blade is arranged on the outer wall of described cutter hub, and is flexibly connected with described cutter hub outer wall radial direction by a connection piece.

3. as claimed in claim 2 for the brill boring gang tool of hole machined, it is characterized in that, described connector is radiai adjustment screw, described radiai adjustment screw two ends are respectively arranged with left hand thread and right-handed thread, and described radiai adjustment screw two ends connect outer wall and second blade of described cutter hub respectively.

4. as claimed in claim 3 for the brill boring gang tool of hole machined, it is characterized in that, cutter holder is provided with between described second blade and described cutter hub outer wall, described cutter holder is provided with the second breach, second blade is arranged on the second indentation, there of described cutter holder by the second securing member, and described cutter holder is arranged on described cutter hub by the 3rd securing member.

5. as claimed in claim 4 for the brill boring gang tool of hole machined, it is characterized in that, described cutter hub is provided with a circular arc cutaway in the position near described second blade, and described circular arc cutaway and described second blade present position partly overlap.

6. as claimed in claim 2 for the brill boring gang tool of hole machined, it is characterized in that, a pair first blades divide the both sides being located at described cutter hub central shaft, and the central shaft of a pair first blades overlaps.

7., as claimed in claim 6 for the brill boring gang tool of hole machined, it is characterized in that, the inward flange of first blade is positioned at the central axis of described cutter hub, and the outward flange of another the first blade is positioned at the outer edge of described cutter hub.

8., as claimed in claim 7 for the brill boring gang tool of hole machined, it is characterized in that, a pair first blades are arranged on described first indentation, there by the first securing member.

9. as claimed in claim 1 for the brill boring gang tool of hole machined, it is characterized in that, described second blade rotates the diameter of a circle that formed and rotates the large 0.2-0.3mm of the diameter of a circle of formation than a pair first blades around the central shaft of described cutter hub around the central shaft of described cutter hub.

10. as claimed in claim 1 for the brill boring gang tool of hole machined, it is characterized in that, the center axial position of the rear end of described cutter hub is provided with an interior Cooling Holes, the front end of described cutter hub is provided with axisymmetric two apopores in center along described cutter hub, and described interior Cooling Holes is communicated with by the cooling fluid of described cutter hub inside with described two apopores.