CN206382848U - Drilling and milling cutters and drilling equipment - Google Patents

Abstract

The utility model relates to a drilling and milling cutter and drilling equipment, the drilling and milling cutter comprises: a tool handle, an end mill, and a drill bit connected in sequence, the end of the drill bit has a first blade portion for drilling a hole in a workpiece, the end of the end mill has a second blade portion for fine machining of the workpiece, and the connection between the end mill and the tool handle has a chamfering portion for chamfering the workpiece. The above-mentioned drilling and milling cutter can combine the processing steps of drilling a hole, fine machining a hole, and chamfering together, and only needs one processing to complete and drill a through hole that meets the standard. Compared with traditional processing, it reduces the tool change time and processing procedures, and greatly improves the processing efficiency.

Description

Drilling and milling cutters and drilling equipment

technical field

The utility model relates to the field of mechanical processing, in particular to a drilling and milling cutter and drilling equipment.

Background technique

In CNC machining, it is often necessary to process a through hole on the workpiece. The traditional processing steps are: first drill the positioning hole, then use the drill bit to drill the through hole, then use the tool to finish the hole, and finally chamfer to complete the processing. Traditional processing methods have many procedures, frequent tool changes, and low processing efficiency.

Utility model content

Based on this, it is necessary to provide a drilling and milling cutter and drilling equipment with fewer processing steps and high processing efficiency.

A drilling and milling cutter, comprising: a tool holder connected in sequence, an end mill, and a drill bit, the end of the drill bit has a first cutting edge for drilling a hole through a workpiece, and the end of the end mill has a As for the second cutting edge portion for finishing the workpiece, the connection between the end mill and the handle has a chamfering portion for chamfering the workpiece.

In one of the embodiments, the tool holder, the end mill and the drill bit are arranged coaxially.

In one of the embodiments, the tool holder, the end mill and the drill bit are integrally formed.

In one embodiment, the diameter of the bottom surface of the second cutting edge is equal to the diameter of the top surface of the drill bit, and the diameter of the top surface of the end mill is equal to the diameter of the bottom surface of the chamfer.

In one of the embodiments, the surface of the end mill is provided with a spiral groove for chip removal.

In one of the embodiments, the chamfering portion is a truncated chamfering knife with a large top and a small bottom.

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

In one of the embodiments, the distance from the top surface of the end mill to the top surface of the second cutting edge portion is greater than the distance from the top surface of the second cutting edge portion to the bottom of the first cutting edge portion.

In one of the embodiments, both the end mill and the drill bit are carbide-coated cutters.

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

The above-mentioned drilling and milling cutter can combine the processing steps of drilling through holes, finishing holes and chamfering together. It only needs one processing to complete and drill through holes that meet the standards. Compared with traditional processing, it reduces Cutting time and processing procedures, greatly improving the processing efficiency.

Description of drawings

Fig. 1 is the side structure schematic diagram of the embodiment of the utility model drilling and milling cutter;

Fig. 2 is the partial sectional view of utilizing the drilling and milling cutter shown in Fig. 1 to drill;

Fig. 3 is the schematic diagram of the three-dimensional structure utilizing the drilling and milling cutter shown in Fig. 1;

Fig. 4 is a longitudinal sectional view of a workpiece drilled with the drilling and milling cutter shown in Fig. 1 .

detailed description

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 , the utility model provides a drilling and milling cutter 10 , which includes a tool holder 100 , an end mill 200 , and a drill bit 300 connected in sequence.

Referring to 3, specifically, the drill bit 300 is connected to the front end of the end mill 200, and the end of the drill bit 300 has a first cutting edge portion 310 for drilling the workpiece 500; the end mill 200 is connected to the handle 100, the end of the end mill 200 has a second blade portion 210 for finishing the workpiece 500, the end of the second blade portion 210 is connected to the drill bit 300, and the surface of the end mill 200 is provided with a spiral groove (not shown in the figure). shown), debris can be discharged from the spiral groove during drilling; the chamfer 400 is connected to the connection between the end mill 200 and the handle 100, and is used for chamfering and deburring the top edge of the through hole 510 . The tool handle 100 can be arranged 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 holes on the workpiece 500 .

Please refer to Figure 2 and Figure 3. When machining the through hole 510 on the workpiece 500, first use the drill bit 300 to align with the pre-drilled position of the workpiece 500 to drill the positioning hole, then roughly machine the through hole, and then use the end mill 200 to pass through The hole is finished, and finally the edge of the top of the finished via hole is chamfered and deburred with the chamfered part, so as to complete the processing of the through hole 510 .

Referring to FIG. 4 , when using the drilling and milling cutter 10 for processing, it is not necessary to use multiple cutters, and one cutter can complete the processing of the through hole 510 at one time. Compared with the traditional processing method, it greatly reduces the tool change time and tool retraction time, the three processes of drilling through holes, finishing holes and chamfering can be completed in one station, the processing efficiency is high, and the processed through holes 510 can meet the standards.

The tool holder 100, the end mill 200 and the drill bit 300 can be arranged coaxially, that is, the central rotation axes of the three coincide.

The tool holder 100, the end mill 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 end mill 200 is equal to the diameter of the bottom surface of the chamfer portion 400 .

The knife handle 100 can be a solid structure; the knife handle 100 can also be a hollow structure, and a connecting part for connecting and fixing the chamfered part 400 is arranged in the knife handle 100 .

Please refer to FIG. 1 , in one embodiment, the chamfering portion 400 is a chamfering knife formed between the tool holder 100 and the end mill 200 , the chamfering knife is in the shape of a circular platform with a large top and a small bottom, and the top of the chamfering knife is The diameter of the face is equal to the diameter of the tool holder 100, and the diameter of the bottom face of the chamfering cutter is equal to the diameter of the top face of the end mill 200. The included angle β1 of the two opposite sides of the cone-shaped chamfering knife is set to 90 degrees, and after the chamfering process, a 45-degree chamfer can be processed on the top of the round hole. The side of the chamfering knife can also be an arc surface, and after the chamfering process, an R angle can be processed on the top surface of the through hole 510 .

The chamfer 400 can also be a first cutting edge (not shown) and a second cutting edge (not shown) that are connected between the end mill 200 and the handle 100, the first cutting edge and the second cutting edge are relative to the drilling and milling cutter The central axis of 10 is arranged symmetrically. Of course, the number of blades is not limited to two, and may be other numbers of blades, for example, three blades are provided which form an included angle of 120 degrees along the circumferential direction.

Please refer to FIG. 1 , in one embodiment, the included angle β2 of the opposite sides of the first cutting edge portion 310 of the drill bit 300 is set as an obtuse angle, and the included angle β3 of the opposite sides of the second cutting edge portion 210 of the end mill 200 Set to sharp angles. The distance H1 from the top surface of the end mill 200 to the top surface of the second blade portion 210 is set to be greater than the distance H2 from the top surface of the second blade portion 210 to the bottom of the first blade portion 310, and the chamfering portion 400 is chamfered at the second The blade portion 210 does not touch the workpiece 500 .

Both the end mill 200 and the drill bit 300 can use cemented carbide coated tools. The cemented carbide coated tools have the advantages of wear resistance, oxidation resistance and high temperature resistance. The tool life is long and can improve the workpiece 500 The surface accuracy of the through hole 510 can also improve the cutting speed and feed speed of the drilling and milling cutter 10 .

The utility model also provides drilling equipment. The drilling equipment includes a rotating part and the above-mentioned drilling and milling cutter 10 connected with the rotating part. The rotating part can drive the drilling and milling cutter 10 to process through holes.

The above-mentioned drilling and milling cutter can combine the processing steps of drilling through holes, finishing holes and chamfering together. It only needs one processing to complete and drill through holes that meet the standards. Compared with traditional processing, it reduces Cutting time and processing procedures, greatly improving the 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 interpreted as a limitation on the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. a kind of drill mill, it is characterised in that including：Handle of a knife, slotting cutter, the bit being sequentially connected, the end tool of the bit Have for the first blade part drilled to workpiece, the end of the slotting cutter has the second blade for being used for finishing to workpiece The junction of portion, the slotting cutter and the handle of a knife, which has, is used for the chamfered section to chamfering work piece.

2. drill mill according to claim 1, it is characterised in that the handle of a knife, slotting cutter and bit are coaxially disposed.

3. drill mill according to claim 1, it is characterised in that the handle of a knife, slotting cutter and bit are integrally formed.

4. drill mill according to claim 3, it is characterised in that the diameter of the second blade part bottom surface is equal to described bore The diameter of mouth top surface, the diameter of the slotting cutter top surface is equal to the diameter of the chamfered section bottom surface.

5. drill mill according to claim 1, it is characterised in that the surface of the slotting cutter offers the spiral shell for chip removal Spin slot.

6. drill mill according to claim 1, it is characterised in that the chamfered section is round table-like to be fallen in up big and down small Angle knife.

7. drill mill according to claim 1, it is characterised in that the angle of the relative both sides of first blade part is blunt Angle, the angle of the relative both sides of second blade part is acute angle.

8. drill mill according to claim 1, it is characterised in that the top surface of the slotting cutter to second blade part The distance of top surface is more than the top surface of second blade part to the distance of the bottom of first blade part.

9. drill mill according to claim 1, it is characterised in that the slotting cutter, bit are hard alloy coating knife Tool.

10. a kind of rig, it is characterised in that be connected including rotation section and with the rotation section such as claim 1 to 9 times Drill mill described in one.