CN207447432U - Tools and Drilling Equipment - Google Patents

Abstract

The utility model relates to a cutter and drilling equipment, the cutter includes: the end of the drill bit is provided with a first blade part used for drilling a hole in a workpiece, the end of the milling cutter is provided with a second blade part used for finish machining of the workpiece, the diameter of the milling cutter is larger than that of the drill bit, the length of the milling cutter is larger than the thickness of the workpiece at the position where the drill bit is to be drilled, and a spiral groove used for chip removal is formed in the surface of the milling cutter. Above-mentioned cutter can be in the same place the processing step union of opening thick, finish machining hole and accomplish, only needs once to process and can accomplish and drill out the through-hole that accords with the standard, for traditional processing, it has reduced tool changing time and manufacturing procedure, has improved machining efficiency greatly.

Description

Tools and Drilling Equipment

technical field

The utility model relates to the technical field of mechanical processing, in particular to a cutting tool and drilling equipment.

Background technique

In the processing of electronic products, it is often necessary to process through holes on the workpiece. Some of the round through holes have very strict requirements on size and appearance. If processing, the bottom of the through hole is prone to burrs, and the processing efficiency is low if the milling cutter is used only, and it is difficult to meet the processing requirements.

Utility model content

Based on this, it is necessary to provide a cutting tool and drilling equipment with high processing efficiency and good processing effect.

A cutting tool, comprising: a tool holder connected in sequence, a milling cutter, and a drill bit, the end of the drill bit has a first cutting edge portion for drilling a hole through a workpiece, and the end of the milling cutter has a first cutting edge portion for precision machining of the workpiece. The second cutting edge portion processed, the diameter of the milling cutter is greater than the diameter of the drill bit, the length of the milling cutter is greater than the thickness of the workpiece to be drilled, and the surface of the milling cutter is provided with a spiral groove for chip removal .

In one of the embodiments, the tool holder, the milling cutter and the drill bit are arranged coaxially.

In one of the embodiments, the tool handle, the milling cutter and the drill bit are integrally formed.

In one embodiment, the diameter of the milling cutter is 0.06 mm larger than that of the drill bit, and the length of the second cutting edge is 0.2 mm.

In one embodiment, the included angle between the two opposite sides of the first blade portion is an obtuse angle.

In one embodiment, the included angle is 140 degrees.

In one of the embodiments, the first cutting edge portion includes two first cutting edges fixed on opposite sides of the bottom of the drill bit, and the second cutting edge portion includes two opposite first cutting edges fixed on the bottom of the milling cutter. The two second blades on the side.

In one of the embodiments, the connection between the milling cutter and the handle has a chamfer for chamfering the workpiece.

In one of the embodiments, the milling cutter and the drill bit are hard alloy parts.

A drilling device includes a rotating part and the above-mentioned tool connected with the rotating part.

The above-mentioned tool can combine the processing steps of roughing and finishing holes together, and only one processing is required to complete and drill a through hole that meets the standard. Compared with traditional processing, it reduces the tool change time and processing procedures. Greatly improved processing efficiency.

Description of drawings

Fig. 1 is a side view structural schematic diagram of a cutter provided by an embodiment;

Fig. 2 is the partial structure diagram when utilizing the tool shown in Fig. 1 to drill through holes to the workpiece;

Fig. 3 is an enlarged schematic diagram of the connection between the milling cutter and the drill bit in the tool shown in Fig. 1 .

Detailed ways

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intervening elements at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used herein in the description of the utility model is only for the purpose of describing specific implementations, and is not intended to limit the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to Fig. 1, Fig. 2, the utility model provides a kind of cutting tool 10, is used for drilling through hole to workpiece 400, for example, carries out the processing of through hole to superhard engineering plastic workpiece 400, and cutting tool 10 comprises the handle of a knife that is connected sequentially 100, milling cutter 200, drill bit 300.

The drill bit 300 is connected to the front end of the milling cutter 200, and the end of the drill bit 300 has a first cutting edge portion 310 for drilling a hole (opening) to the workpiece 400; the milling cutter 200 is connected to the front end of the tool handle 100, and The end of the cutter 200 has a second cutting edge portion 210 for finishing the workpiece 400, the end of the second cutting edge portion 210 is connected with the drill bit 300, the diameter of the milling cutter 200 is greater than the diameter of the drilling bit 300, and the end of the milling cutter 200 The length is greater than the thickness H3 of the workpiece 400 where the hole is to be drilled. The surface of the milling cutter 200 is provided with a spiral groove (not shown in the figure), and debris can be discharged from the spiral groove during drilling. The tool handle 100 can be set in a cylindrical shape, and can be clamped in a tool holding device during processing. The tool holding device is connected to a power device, and the power device drives the tool handle 100 to drill through holes on the workpiece 400 .

Please refer to Fig. 1 to Fig. 3 in conjunction with Fig. 3. When processing a through hole on the workpiece 400, first use the drill bit 300 to align the position of the workpiece 400 to be drilled to drill a positioning hole, then roughly machine the via hole, and then use the milling cutter 200 to pass through. The hole is finished to complete the machining of the through hole.

When using the cutter 10 to process a through hole, there is no need to use multiple cutters, and one cutter can complete the processing of the through hole at one time. Compared with the traditional processing method, it greatly reduces the tool change time and tool withdrawal time, and can The process of drilling through holes and finishing holes is completed at one station, and the processing efficiency is high. There will be no burrs at the bottom of the processed through holes, and the size and appearance can meet the standards.

The tool handle 100, the milling cutter 200 and the drill bit 300 can be arranged coaxially, that is, the central rotation axes of the three coincide. The tool holder 100 may be a solid structure; the tool holder 100 may also be a hollow structure, for example, a connection portion for connecting and fixing the milling cutter 200 is provided in the tool holder 100 .

The handle 100, the milling cutter 200 and the drill bit 300 can be integrally formed, or combined by welding or connecting pieces. The diameter of the bottom surface of the second cutting edge portion 210 is equal to the diameter of the top surface of the drill bit 300 , and the diameter of the top surface of the milling cutter 200 is equal to the diameter of the bottom surface of the chamfer portion 110 . Both the milling cutter 200 and the drill bit 300 can be made of cemented carbide. The cemented carbide material has the advantages of wear resistance, oxidation resistance and high temperature resistance. The tool 10 has a long service life and can improve the reliability of the through hole after the workpiece 400 is processed. Surface accuracy can also increase the cutting speed and feed speed of the tool 10.

Please refer to Fig. 2, Fig. 3, in one embodiment, the included angle β of the two opposite sides of the first blade portion 310 of the drill bit 300 is set as an obtuse angle, for example, the included angle β is set to 140 degrees, it can also be Other angles, such as 120 degrees, 150 degrees, etc.; the angle between the opposite sides of the second blade portion 210 of the milling cutter 200 is set to be smaller than the angle β of the opposite sides of the first blade portion 310 of the drill bit 300, the first The distance H1 from the bottom of the cutting edge portion 310 to the bottom surface of the second cutting edge portion 210 is set to be greater than the distance H2 from the top surface of the milling cutter 200 to the top surface of the second cutting edge portion 210 .

The diameter of the milling cutter 200 is set to be larger than that of the drill bit 300 , and the length of the milling cutter 200 is greater than that of the drill bit 300 . In one embodiment, the diameter of the milling cutter 200 is set to be 0.06 mm larger than the diameter of the drill bit 300 , and a margin of 0.03 mm is left on one side of the drill bit 300 for machining in the area of the milling cutter 200 . The length of the second cutting edge portion 210 is 0.2 mm, which is much smaller than that of the milling cutter 200 .

In one embodiment, the first cutting edge portion 310 includes two first cutting edges fixed on opposite sides of the bottom of the drill bit 300, and the second cutting edge portion 210 includes two first cutting edges fixed on opposite sides of the milling cutter 200 near the bottom. Two blades. It can be understood that the number of blades is not limited to two, and can be other numbers of blades, for example, three blades are arranged at a mutual angle of 120 degrees along the circumferential direction.

The connection between the handle 100 and the milling cutter 200 is provided with a chamfer 110, which is used to chamfer and deburr the top edge of the through hole, so as to further save the process. Since the length of the milling cutter 200 and the length of the drill bit 300 are greater than The thickness of the workpiece 400 to be drilled, the second cutting edge portion 210 will not touch the workpiece 400 when the chamfering portion 110 is chamfering. In one embodiment, the diameter of the tool holder 100 is larger than that of the milling cutter 200, and the chamfering portion 110 is formed by a chamfering knife between the tool holder 100 and the milling cutter 200. shape, the diameter of the top surface of the chamfering cutter is equal to the diameter of the handle 100, and the diameter of the bottom surface of the chamfering cutter is equal to the diameter of the top surface of the milling cutter 200. The included angles on the opposite sides of the chamfering knife are set as acute angles or 90 degrees. When the included angles are set to 90 degrees, a 45-degree chamfer can be processed on the top of the round hole after the chamfering process. The side of the chamfering knife can also be an arc surface, and the R angle can be processed on the top surface of the through hole after the chamfering process. It can be understood that the chamfer 110 may also be formed by connecting two cutting edges arranged between the milling cutter 200 and the handle 100 , and the two cutting edges are arranged symmetrically with respect to the central axis of the cutting tool 10 . It can be understood that the number of blades is not limited to two, and can be other numbers of blades, for example, three blades are arranged at a mutual angle of 120 degrees along the circumferential direction.

The utility model also provides drilling equipment. The drilling equipment includes a rotating part and the above-mentioned cutter 10 connected with the rotating part. The rotating part can drive the cutter 10 to process through holes. Both the milling cutter 200 and the drill bit 300 can be made of cemented carbide. The cemented carbide has the advantages of wear resistance, oxidation resistance and high temperature resistance. The tool 10 has a long service life. When the workpiece 400 is processed through holes, the processed product has no burrs, and the tool 10 has no breakage, no burns, and no serrations.

The above-mentioned tool can combine the processing steps of roughing and finishing holes together, and only one processing is required to complete and drill a through hole that meets the standard. Compared with traditional processing, it reduces the tool change time and processing procedures. Greatly improved processing efficiency.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. a kind of cutter, which is characterized in that including：Sequentially connected handle of a knife, milling cutter, bit, the end of the bit, which has, to be used There is the second blade part finished to workpiece, institute in the end to drilled first blade part of workpiece, the milling cutter The diameter for stating milling cutter is more than the diameter of the bit, and the length of the milling cutter is more than the thickness at workpiece place hole to be drilled, the milling cutter Surface offer helicla flute for chip removal.

2. cutter according to claim 1, which is characterized in that the handle of a knife, milling cutter and bit coaxial arrangement.

3. cutter according to claim 2, which is characterized in that the handle of a knife, milling cutter and bit are integrally formed.

4. cutter according to claim 2, which is characterized in that the diameter of the milling cutter is bigger than the diameter of the bit 0.06mm, the length of second blade part is 0.2mm.

5. cutter according to claim 1, which is characterized in that the angle of the opposite both sides of first blade part is blunt Angle.

6. cutter according to claim 5, which is characterized in that the angle is 140 degree.

7. cutter according to claim 1, which is characterized in that first blade part includes being fixed on the bit bottom Two the first blades of opposite sides, second blade part include being fixed on the milling cutter close to the opposite both sides of bottom Two the second blades.

8. cutter according to claim 1, which is characterized in that the junction of the milling cutter and the handle of a knife have for pair The chamfered section of chamfering work piece.

9. cutter according to claim 1, which is characterized in that the milling cutter, bit are hard alloy piece.

10. a kind of drilling device, which is characterized in that be connected including rotation section and with the rotation section such as claim 1 to 9 times Cutter described in one.