CN207013776U - Double-sided chamfering form milling cutter - Google Patents

Abstract

A double-sided chamfer forming milling cutter comprises a cutter handle and a cutter body which are connected; the cutter body is provided with a conical first cutter head and a columnar second cutter head, and the second cutter head is connected with the first cutter head and the cutter handle; the first cutter head is provided with two chip grooves, and first chamfer milling edges are arranged on the first cutter head corresponding to the chip grooves respectively; the second tool bit is provided with two chip guide grooves which are respectively communicated with two chip discharge grooves, and each chip guide groove extends to the tool shank from the first tool bit in a spiral way; the second tool bit comprises a first cylindrical part connected with the first tool bit, a second cylindrical part connected with the tool handle and a chamfer part connected with the first cylindrical part and the second cylindrical part; the diameter of the first cylindrical part is larger than that of the second cylindrical part, a side wall milling blade is arranged on the first cylindrical part corresponding to each chip guide groove, and a second chamfer milling blade is arranged on the chamfer part corresponding to each chip guide groove. The utility model discloses can once go on to position entrance point, exit end chamfer processing and deburring, reduce the secondary clamping, shorten the clamping time.

Description

Double-sided chamfering form milling cutter

technical field

The utility model belongs to the technical field of processing cutters, in particular to a double-sided chamfering forming milling cutter.

Background technique

Chamfering is an essential and important process in mechanical processing, because its importance is directly related to product assembly and transfer, so it has become a work content that designers must specify in design drawings.

In the current drilling process, it is often necessary to process chamfering at the inlet and outlet ends of the through-hole of the workpiece, and remove the flanging burrs; the traditional processing method is to use a chamfering tool to chamfer one end, and then turn the workpiece over , and then chamfer the other end. This processing method requires two kinds of chamfering tools, and the tool needs to be clamped twice. The clamping time is longer and the efficiency is low; at the same time, after the two clamping, There is a positioning error and the machining accuracy is reduced.

Therefore, a kind of double-sided chamfering milling cutter capable of chamfering the inlet end and the outlet end and removing the flanging burrs at one time, with higher processing efficiency and higher processing accuracy is urgently needed.

Utility model content

Based on this, the utility model aims at the above problems, and provides a double-sided chamfering forming milling cutter capable of chamfering the inlet end and the outlet end and removing flanging burrs, with high processing efficiency and high processing precision.

In order to realize the purpose of the utility model, the utility model adopts the following technical solutions:

A double-sided chamfering forming milling cutter, including connecting the handle and a cutter body; the cutter body has a conical first cutter head and a columnar second cutter head, and the second cutter head is connected to the first cutter head A cutter head and a handle; the first cutter head is provided with two chip removal grooves, and the first cutter head is provided with a first chamfering milling edge corresponding to each chip removal groove; the second cutter head is provided with There are two chip guide grooves, and the two chip guide grooves are respectively connected to the two chip discharge grooves, and each of the chip guide grooves extends spirally from the first cutter head to the handle; the second cutter head includes The first cylindrical part connected with the first cutter head, the second cylindrical part connected with the knife handle and the chamfered part connected with the first cylindrical part and the second cylindrical part; the first column The diameter of the body part is greater than the diameter of the second cylinder part, the first cylinder part is provided with sidewall milling edges corresponding to the chip guide grooves, and the chamfered part is provided with sidewall milling edges corresponding to the chip guide grooves. Second chamfering milling edge.

The above-mentioned double-sided chamfering forming milling cutter, by setting the first chamfering milling edge on the first cutter head, and setting the second chamfering milling edge on the chamfering part of the second cutter head, makes the entrance end of the hole position, The chamfering and deburring of the exit end can be carried out at one time, which reduces the secondary clamping, shortens the clamping time, improves the processing efficiency, reduces the positioning error caused by the secondary clamping, and makes the processing accuracy higher.

In one embodiment, an undercut groove is provided on the end of the second cylinder portion close to the chamfered portion.

In one embodiment, the apex angle of the first cutter head is 90°.

In one embodiment, the outer sides of the first cutter head and the second cutter head are coated with a tungsten gold layer.

In one of the embodiments, a cooling channel is provided inside the handle, and the cooling channel includes a main cooling channel arranged coaxially with the tool handle, several water inlet channels connected to the main cooling channel, and two cooling channels. The water outlet channel of the main cooling channel is connected; the water inlet channel is located at the end of the knife handle away from the knife body, the water outlet channel is located at the end of the knife handle close to the knife body, and each of the water inlet channels The central axis of the channel and the central axis of each of the water outlet channels are set perpendicular to the central axis of the main cooling channel; a water jacket is provided on the handle corresponding to the water inlet channel, and the water jacket has a top end An open water storage chamber, the water storage chamber is connected to each of the water inlet channels; a metal hose connected to the water outlet channels is installed on the handle corresponding to each of the water outlet channels, and the metal flexible The water outlet of the pipe is towards the cutter body.

In one of the embodiments, the water jacket includes an outer wall located on the periphery of the knife handle and coaxial with the knife handle and a connecting wall connecting the outer wall and the knife handle, the outer wall, the connecting wall and the The knife handle surrounds the water storage chamber.

In one embodiment, each metal hose is provided with a flow regulating valve.

In one of the embodiments, the cross-section of the flute is V-shaped, and the cross-sectional size of the flute gradually changes from the tip of the first cutter head toward the direction of the second cutter head. big.

In one of the embodiments, the cross section of the chip guiding groove is arc-shaped.

Description of drawings

Fig. 1 is a schematic structural view of a double-sided chamfering milling cutter shown in the first embodiment of the present invention;

Fig. 2 is a schematic structural view of a partly sectioned double-sided chamfering forming milling cutter shown in the second embodiment of the present invention.

In the picture:

10. Knife handle; 11. Main cooling channel; 12. Water inlet channel; 13. Water outlet channel;

20. Cutter body; 30. First cutter head; 31. Chip flute; 32. First chamfering milling edge; 40. Second cutter head; 41. Chip guide groove; 42. First cylinder part; 43. Side wall milling edge; 44, second cylinder part; 45, tool relief groove; 46, chamfering part; 47, second chamfering milling edge; 50, water jacket; 51, water storage cavity; 52, outer wall; 53 , connecting wall; 60, metal hose; 70, flow regulating valve.

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 can 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 understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

As shown in FIG. 1 , it is a double-sided chamfering forming milling cutter according to the first embodiment of the present invention. The double-sided chamfering forming milling cutter includes a connected tool handle 10 and a cutter body 20 . The cutter body 20 has a conical first cutter head 30 and a cylindrical second cutter head 40 , and the second cutter head 40 connects the first cutter head 30 and the handle 10 .

In order to enhance the performance of the cutter body 20 for milling workpieces, the outer sides of the first cutter head 30 and the second cutter head 40 are coated with a tungsten gold layer.

The angle of the apex angle of the first cutter head 30 is 90°. The first cutter head 30 is provided with two flutes 31, and the first cutter head 30 is respectively provided with a first chamfering milling edge 32 corresponding to each chip flute 31, and the first chamfering milling edge 32 can be used for drilling, It can also be used to chamfer the inlet end of the workpiece hole and remove the flanging burr.

The cross-section of the chip flute 31 is V-shaped, and the cross-sectional dimension of the chip flute 31 gradually increases from the tip of the first cutter head 30 toward the direction of the second cutter head 40 .

The second cutter head 40 is provided with two chip guide grooves 41, and the two chip guide grooves 41 respectively communicate with the two chip discharge grooves 31. Each chip guide groove 41 spirally extends from the first cutter head 30 to the handle 10. In this embodiment Among them, the cross section of the chip guide groove 41 is arc-shaped;

The second cutter head 40 includes a first cylinder portion 42 connecting the first cutter head 30 , a second cylinder portion 44 connecting the handle 10 and a chamfer connecting the first cylinder portion 42 and the second cylinder portion 44 46; the diameter of the first cylinder part 42 is greater than the diameter of the second cylinder part 44, and the first cylinder part 42 is provided with a side wall milling edge 43 corresponding to each chip guide groove 41, which is used to remove the hole on the side wall of the workpiece. The chamfering portion 46 is provided with a second chamfering milling edge 47 corresponding to each chip guide groove 41, which is used for chamfering the outlet end of the workpiece hole and removing the flanging burr.

An end of the second cylinder portion 44 close to the chamfered portion 46 is provided with an undercut 45 to facilitate the processing and forming of the chamfered portion 46 .

The above-mentioned double-sided chamfering forming milling cutter, by setting the first chamfering milling edge 32 on the first cutter head 30, and setting the second chamfering milling edge 47 on the chamfering portion 46 of the second cutter head 40, makes the The chamfering processing and deburring of the inlet and outlet ends of the hole position can be carried out at one time, which reduces the secondary clamping, shortens the clamping time, improves the processing efficiency, reduces the positioning error caused by the secondary clamping, and makes the processing accuracy higher.

As shown in Figure 2, it is a double-sided chamfering forming milling cutter according to the second embodiment of the utility model. The handle 10 is provided with the main cooling channel 11 concentrically, several water inlet channels 12 connected to the main cooling channel 11 and two water outlet channels 13 connected to the main cooling channel 11; At one end, the water outlet flow channel 13 is located at the end of the handle 10 near the cutter body 20, and the central axis of each water inlet flow channel 12 and the central axis of each water outlet flow channel 13 are arranged perpendicular to the central axis of the main cooling flow channel 11; There is a water jacket 50 corresponding to the water inlet flow channel 12 on the top, and the water jacket 50 has a water storage chamber 51 with an open top, and the water storage chamber 51 is connected to each water inlet flow channel 12; The metal hose 60 of the water outlet channel 13 , the water outlet of the metal hose 60 faces the cutter body 20 .

The water jacket 50 includes an outer wall 52 located on the periphery of the handle 10 and coaxial with the handle 10 and a connecting wall 53 connecting the outer wall 52 and the handle 10. The outer wall 52, the connecting wall 53 and the handle 10 form a water storage chamber. 51.

In this embodiment, each metal hose 60 is provided with a flow regulating valve 70, which is used to make the metal hose 60 adjust the water output of the metal hose 60 according to the situation.

When the above-mentioned double-sided chamfering forming milling cutter mills a workpiece, the external water supply pipe sends cooling water to the water storage chamber 51 of the water jacket 50, and the cooling water enters the main cooling flow channel 11 through the water inlet flow channel 12 to maintain the tool holder. 10 to cool down, so that the cutter body 20 connected to the handle 10 can also be cooled rapidly; the cooling water in the main cooling channel 11 is sprayed onto the cutter body 20 through the metal hose 60 to cool down and rinse the cutter body 20 , so that the temperature of the cutter body 20 is further reduced, prolonging the service life of the cutter body 20 .

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 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 (9)

1. a kind of Double-side rounding profile milling cutter, it is characterised in that including the handle of a knife and cutter hub being connected；The cutter hub has taper The first cutter head and column the second cutter head, second cutter head connects first cutter head and handle of a knife；First cutter head is set There are two chip areas, each chip area is corresponded on first cutter head and is respectively equipped with the first chamfering milling edge；Set on second cutter head There are two dregs guiding grooves, two dregs guiding groove is respectively communicated with two chip area, and each dregs guiding groove prolongs from the first cutter head spiral Extend on the handle of a knife；Second cutter head includes connecting the first trunk portion of first cutter head, the of the connection handle of a knife Two trunk portions and the chamfered section of connection first trunk portion and the second trunk portion；The diameter of first trunk portion is more than second The diameter of trunk portion, each dregs guiding groove is corresponded in first trunk portion and is provided with milling side wall sword, it is corresponding in the chamfered section Each dregs guiding groove is provided with the second chamfering milling edge.

2. Double-side rounding profile milling cutter according to claim 1, it is characterised in that close to described in second trunk portion One end of chamfered section is provided with escape.

3. Double-side rounding profile milling cutter according to claim 1, it is characterised in that the angle of the drift angle of first cutter head For 90 °.

4. Double-side rounding profile milling cutter according to claim 1, it is characterised in that first cutter head and the second cutter head Outer application has tungsten layer gold.

5. Double-side rounding profile milling cutter according to claim 1, it is characterised in that coolant flow channel is provided with the handle of a knife, The coolant flow channel includes main cooling flow road, some water inlet flow channels for connecting main cooling duct with the concentric setting of the handle of a knife And two the main cooling duct of connection outlet passage；The water inlet flow channel is located at the one end of the handle of a knife away from the cutter hub, described Outlet passage is located at the handle of a knife close to one end of the cutter hub, the central axis of each water inlet flow channel and it is each it is described go out current The central axis in road is set with the central axis upright in the main cooling flow road；The water inlet flow channel is corresponded on the handle of a knife to set There is a water jacket, the water jacket has the open water storage cavity in top, and the water storage cavity connects each water inlet flow channel；On the handle of a knife Corresponding each outlet passage is separately installed with the metal hose of the connection outlet passage, the delivery port of the metal hose Towards the cutter hub.

6. Double-side rounding profile milling cutter according to claim 5, it is characterised in that the water jacket includes being located at the handle of a knife Periphery and with the outer wall of the concentric setting of the handle of a knife and be connected the connection wall of the outer wall and handle of a knife, the outer wall, connection Wall and handle of a knife surround the water storage cavity.

7. Double-side rounding profile milling cutter according to claim 5, it is characterised in that each metal hose is provided with stream Adjustable valve.

8. Double-side rounding profile milling cutter according to claim 1, it is characterised in that the cross section of the chip area is V-shaped, The cross sectional dimensions of the chip area becomes larger from the direction of point of a knife towards second cutter head of first cutter head.

9. Double-side rounding profile milling cutter according to claim 1, it is characterised in that the cross section of the dregs guiding groove is in arc Shape.