CN203221234U - countersunk knife - Google Patents

Abstract

The utility model discloses a countersink tool, including a driving part, a cutting part, a clamping part, and also includes a positioning column for positioning during drilling machine processing, a countersink blade for making a countersink hole, and a chamfering blade for making a chamfer of the inner hole and the hole mouth of the countersink. The positioning column is arranged on the cutting part, and the clamping part is connected to the drilling and tapping quick-change handle of the drilling machine, and is also provided with a chip removal groove. When the blade is worn or cracked, the utility model only needs to replace the blade to ensure that the diameter of the countersink hole is uniform, the bottom is flat, and the chamfer is consistent. The countersink tool can simply, quickly, and standardizedly process the countersink hole and its chamfer.

Description

countersunk knife

technical field

The utility model belongs to the field of drilling technology, in particular to a countersunk knife.

Background technique

Traditionally, when processing countersink holes with the same axis but different diameters, there are three types of countersunk cutters used: ordinary drills are ground into flat bottoms for processing (processing on a drilling machine); high-speed steel countersunk cutters are used for processing (processing on a drilling machine); or milling or plunge milling with an end mill (processing on a milling machine).

In the machining process, various countersunk holes are often processed on the workpiece, and most of the inner and outer holes of the countersunk head need to be chamfered to remove burrs. The existing countersink hole chamfering is generally processed after the countersink hole is finished, and then the chamfering process is performed separately. If the inner and outer holes need to be chamfered, the tool needs to be replaced three times to completely process the entire countersink hole. Low, waste of man-hours.

In addition, due to the traditional countersunk cutters, flat-bottomed drills specially ground with twist drills, end mills, and chamfering cutters, when the cutting edge is cracked or worn, it needs to be reground or the entire tool is scrapped and replaced. new, otherwise it can no longer be used. If it is regrinded, it will lead to further waste of processing hours and another reduction in processing efficiency, or to ensure efficiency, it is necessary to increase inventory and pre-grind for use, resulting in an increase in tool costs; if it is discarded, it will virtually cause material waste for countersunk knives, and at the same time It also leads to an increase in the cost of purchasing tools.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a countersunk knife that can be used repeatedly and can process the countersink hole and its chamfering in a simple, fast and standardized manner.

In order to achieve the above purpose, the technical solution of the utility model is: a countersunk knife, including a driving part, a cutting part, a clamping part, a positioning column for positioning during drilling, and a countersunk knife for making countersink holes. Grains and chamfering cutter grains for chamfering the inner hole and hole of the countersunk head, the positioning column is set on the cutting part, and the clamping part is connected with the quick-change handle of the drilling machine. The countersunk knife grain is used for the countersink hole, and the chamfering knife grain is used for the chamfering of the inner hole of the countersunk head and the opening of the countersunk head. It can be chamfered while making the countersink hole; The processing quality and efficiency of the countersink hole can be guaranteed by changing the cutter grain, the operation is simple and fast, and the efficiency is improved.

As a further improvement of the utility model, the clamping part is provided with a slot for matching with the quick-change handle of the drill press. The card slot cooperates with the quick-change handle for drilling and tapping of the drilling machine to prevent the countersunk head from slipping out of the quick-changing handle for drilling and tapping of the drilling machine; stop.

As a further improvement of the utility model, the cutting part is in the form of a stepped cylinder whose size varies with the size of the counterbore.

As a further improvement of the utility model, the cross-section of the chamfering and countersunk chamfering cutter grains is rhombus. The chamfering cutter grains are best arranged at 45° (it can also be adjusted during cutter body production according to actual processing needs).

As a further improvement of the utility model, there are at least two chamfering blades. The two chamfering blades respectively chamfer the inner hole of the countersunk head and the opening of the countersunk head.

As a further improvement of the utility model, the cutting part is provided with cutting grooves. When the utility model works, the cutting groove helps to discharge chips.

The beneficial effect of the utility model is that: the utility model uses the countersunk knife grain to make the countersunk hole, and the chamfering knife grain is used as the chamfering of the inner hole of the countersunk head and the countersunk hole, and can be processed while making the countersunk hole. Chamfering, simple and fast operation, improving efficiency.

Description of drawings

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

Detailed ways

In order to make the purpose, technical solution and advantages of the present utility model clearer, it will be further described in detail in conjunction with the following drawings, referring to FIG. 1 .

The countersunk knife includes a driving part 1, a cutting part 3, a clamping part 2, and also includes a positioning column 31 for positioning when drilling a drilling machine, a countersunk knife grain 32 for making a countersink hole, and a countersunk knife for making a countersink. The chamfering cutter grain 33 for chamfering the hole and the hole, the positioning column 31 are arranged on the cutting part 3, and the clamping part 2 is connected with the quick-change handle of the drilling machine. The positioning column 31 ensures that the countersunk knife is positioned accurately during processing. The countersunk knife grain 32 is used as the countersunk hole, and the chamfering knife grain 33 is used as the chamfering of the inner hole of the countersunk head and the countersunk hole. It performs chamfering; when the blades are worn and cracked, only the blades need to be replaced to ensure the processing quality and efficiency of the countersunk hole. The operation is simple and fast, and the efficiency is improved.

The clamping part 2 is provided with a slot 21 for matching with the quick-change handle of the drill press. The card slot 21 cooperates with the quick-change handle of the drill press to prevent the countersunk head from slipping out of the quick-change handle of the drill press; the clamping part 2 is also provided with a drive part with a square end face, so as to ensure that the countersunk knife and the spindle of the drill press Start and stop.

The cutting part 3 is a stepped cylinder whose size changes with the size of the countersunk hole, so as to make countersunk knives of different specifications.

The cross section of the chamfering blade 33 is rhombus. The chamfering cutter grains 33 are optimally arranged at 45° (it can also be adjusted when the cutter body is made according to actual processing needs).

There are at least two chamfering cutter grains 33 . The two chamfering blades 33 respectively chamfer the inner hole of the countersunk head and the opening of the countersunk head.

The cutting part 3 is provided with a flute disposed between the countersunk blade 32 and the chamfering blade 33 . Chip flute helps to discharge chips when the utility model is working.

The utility model is connected and matched with the quick-change handle of the drilling machine, and the driving part 1 is driven to rotate through the main shaft of the drilling machine and the quick-change handle of the drilling machine, so that the countersunk knife of the utility model rotates as a whole. At this time, the countersunk knife grain 32 is Countersunk hole, chamfering cutter grain 33 is done the chamfering of countersunk head endoporus and orifice.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also make appropriate changes and modifications to the above embodiment. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims (6)

1. countersunk head cutter, comprise drive division, cutting portion, clamping part, it is characterized in that, also comprise for drilling machine and add the reference column of location in man-hour, the rose reamer grain that is used for doing the countersunk head cutter grain of counter sink and is used for doing countersunk head endoporus and aperture chamfering, reference column is arranged at cutting portion, and clamping part is attacked the quick change handle with the drilling machine brill and is connected.

2. countersunk head cutter according to claim 1 is characterized in that: clamping part is provided with for boring with drilling machine and attacks the draw-in groove that the quick change handle cooperates.

3. countersunk head cutter according to claim 1 is characterized in that: the stepped cylinder of cutting portion.

4. countersunk head cutter according to claim 1, it is characterized in that: the cross section of countersunk head and rose reamer grain is rhombus.

5. countersunk head cutter according to claim 1, it is characterized in that: the rose reamer grain is provided with two at least.

6. countersunk head cutter according to claim 1 is characterized in that: cutting portion is provided with row and cuts groove.

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