TWI554350B - Discarded reamer - Google Patents

Description

Discarding reamer

The present invention relates to an improvement of a reamer, and more particularly to a disposable reamer that can change the direction of coolant output.

Referring to FIG. 11 , a rotary reaming tool for performing precision cutting mainly includes a tool spindle 50 and a reaming head 60. The reaming head 60 is a disposable design. A plurality of blades 61 are annularly arranged on the head 60, and are welded to the blade holder 62. The high-speed rotary reaming tool performs a small amount of reaming operation, and has the function of accurately processing the inner hole size and achieving fine surface roughness; The reaming operation of the inner hole has the advantages of perforation and blind hole. The work of the hinge pin needs to assist the lubrication by the cutting fluid, reduce the friction and cutting resistance of the blade, reduce the processing temperature of the blade and wash away the cutting debris, especially The way to remove the chips is to match the different reamer 60 with the perforation or blind hole operation. Please refer to Figure 12 for the application of the perforation reaming operation. The center position of the reamer head 61 There is a non-penetrating fluid hole 611, and the fluid hole 611 is provided with a side flow hole 612 which extends outward and downwards to the outside of the cutting groove 63, and the cutting fluid will pass from the tool body 50 to the reamer head 61, and The side flow hole 612 of the reamer head 61 is discharged. Lubricated, cooled and the coolant flows downwards to take the iron scraps away and flow out towards the perforations; see also Figure 13 for the blind hole reaming operation, the center of the reamer head 62 has A through-hole through hole 621, the cutting fluid will pass from the tool spindle 50 to the reamer head 62, and will flow out from the end of the fluid perforation 621 of the reamer head 62, and the cutting fluid will turn upward through the blind hole, and follow the blind. The edge of the hole flows out to the outer end of the blind hole. The coolant simultaneously contacts the blade of the reamer head 62 and the edge of the blind hole to achieve lubrication, cooling, and when the coolant flows upward, the iron scrap is taken away and flows out of the blind hole.

As can be summarized from the foregoing, the conventional reaming tool must be equipped with a different retracting reamer head 60 for piercing or blind hole reaming, and a reaming head 61 with a side flow hole 612 for perforating reaming work. The reamer head 62 used in the blind hole reaming operation has a fluid perforation 621 therethrough; therefore, the user must prepare two discarded reamer heads 60 of different types of coolant outlets, and the inability to share is its main disadvantage. In order to increase the cost of the tool for the user, when the same workpiece is used for perforation and blind hole reaming, the manufacturer must replace the different reaming reamer 60. Once the reamer 60 is replaced, the center position of the tool must be recalibrated. Tool change and calibration time will reduce production time and increase production costs.

Conventional reaming reamers must be used with different retractable reamer heads for perforation or blind hole reaming. For perforated reaming work, reamer heads with side flow holes are used, and blind hole reaming operations are used. The reamer head has a perforated fluid perforation, so the user must prepare two discarded reamer heads of different types of coolant outlets, and the two discarding reamer heads cannot be shared.

The retractable reamer of the present invention comprises a tool spindle, the tool spindle end locking a retractable reamer head, wherein one end of the tool spindle is provided with a connecting portion, and an end surface of the connecting portion is provided with a receiving hole, the connecting portion The outer end of the flange body is provided with a flange body extending toward the two sides, and the outer side edges of the flange body are provided with screw holes facing the radial direction and penetrating the receiving holes; the reamer head is provided with a set of shafts at one end thereof. The center of the reamer head is provided with an axially penetrating fluid perforation, and a screw hole of a suitable length is arranged at the other end of the reamer head, the screw hole is connected with the fluid perforation, and an adjusting bolt is screwed on the foregoing Within the screw hole, a number of lateral flow holes are inclined from the chip flute toward the inside of the screw hole The communicating direction has a proper angle with the central shaft such that the lateral flow hole is formed downwardly and outwardly from the chip flute, and the outer peripheral surfaces of the sleeve shafts are provided with conical recessed holes. The conical recessed hole corresponds to the screw hole of the outer side surface of the flange body, and the socket shaft is screwed to the connecting portion by a fixing screw.

The adjusting bolt of the invention has different lengths of length and length, and the long adjusting bolt can close the lateral flow hole of the reamer head, and the long adjusting bolt is provided with a through hole for penetrating, can be applied to the reaming operation of the blind hole, and the short adjusting bolt Then, the end surface of the reamer head is closed to guide the cutting fluid to flow out from the lateral flow hole.

10‧‧‧Tool spindle

11‧‧‧ Sockets

12‧‧‧Perforation

13‧‧‧Connecting Department

131‧‧‧ accommodating holes

132‧‧‧Flange body

133‧‧‧ screw holes

20‧‧‧ Reamer head

21‧‧‧ Socket shaft

22‧‧‧Reamer

221‧‧‧Conical recess

23‧‧‧ Chip flutes

24‧‧‧Fluid perforation

25‧‧‧ screw holes

26‧‧‧lateral orifice

30‧‧‧Adjusting bolts

31‧‧‧Long adjustment screw

311‧‧‧through hole

32‧‧‧Short adjustment screw

40‧‧‧ fixing screws

‧‧‧‧ angle

Θ‧‧‧ angle

50‧‧‧Tool spindle

60‧‧‧One reamer

61‧‧‧blade

611‧‧‧Fluid hole

612‧‧‧ lateral orifice

62‧‧‧Tool holder

621‧‧‧Fluid perforation

63‧‧‧cutting trough

Figure 1 is a perspective view of the present invention

Figure 2 is a plan view of the combination of the present invention

Figure 3 is a perspective view of the long adjustment screw of the present invention

Figure 4 is a perspective view of the short adjustment screw of the present invention.

Figure 5 is a diagram showing an embodiment of the retracting reamer of the present invention applied to blind hole reaming

Figure 6 is a view showing an embodiment of the retracting reamer of the present invention applied to perforation reaming

Figure 7 is an end view of the reaming head of the present invention

Figure 8 is an end view of the combination of the reaming head and the tool spindle of the present invention

Figure 9 is a diagram showing an embodiment of the combination of the tool spindle and the reaming head of the present invention.

Figure 10 is a schematic view showing the offset of the position of the conical recessed hole of the reamer head of the present invention and the position of the screw hole of the tool spindle.

Figure 11 is a combination of the discarded reamer

Figure 12 is a schematic diagram of a perforated reaming using a conventional reaming reamer

Figure 13 is a schematic diagram of blind hole reaming using a conventional reaming reamer

Referring to Figures 1 and 2, the disposable reamer of the present invention is provided with a tool spindle 10, and the tool spindle 10 is end-locked with a retractable reamer head 20, wherein: the tool spindle 10 has a set of one end at one end. The portion 11 is connected to the rotating shaft of the machine, and the tool spindle 10 is rotated. The central shaft portion of the tool spindle 10 is provided with a through hole 12 through which the cutting fluid of the machine flows into the tool spindle 10, A connecting portion 13 is disposed at the other end of the tool spindle 10. The receiving portion 13 is provided with a receiving hole 131. The receiving hole 131 is connected to the through hole 12, and the outer end of the connecting portion 13 is extended to both sides. The flange body 132 has two outer edge faces of the flange body 132 and a screw hole 133 that penetrates the receiving hole 131 in the radial direction.

The reamer head 20 is provided with a set of shafts 21 at one end of the reamer head 20, and the reamer head 20 is provided with a plurality of reamer blades 22 which are welded to the knives, and each hinge One side of the blade 22 is provided with a chip flute 23 which extends axially through the reamer head 20. The center of the reamer head 20 is provided with an axially extending fluid perforation 24, and the reamer head 20 is The other end is provided with a screw hole 25 of a suitable length. The screw hole 25 communicates with the fluid perforation 24, an adjusting bolt 30 is screwed into the screw hole 25, and a plurality of lateral flow holes 26 are arranged. The flutes 23 are obliquely communicated toward the inside of the screw hole 25, and have an appropriate angle α with the central shaft such that the lateral flow holes 26 are formed downwardly and outwardly from the flutes 23, and the aforementioned sleeve shaft 21 is inserted. The outer peripheral surface of the two sides is provided with a conical recessed hole 211 corresponding to the screw hole 133 of the outer peripheral surface of the flange body 132, and the sleeve shaft 21 is screwed to the joint portion by a fixing screw 40. 13.

Referring to Figures 3 and 4, the adjusting bolt 30 has a different length and length. The long adjusting bolt 31 is provided with a through hole 311 therethrough, and the short adjusting bolt 32 is not provided. In the form of a normal screw, the long and short adjusting screws 31 and 32 can change the outflow direction of the cutting fluid of the reamer head 20, thereby Reaming operation for blind holes or perforations, the application of which is described later: Please refer to Figure 5 for an example of blind hole reaming. When blind hole reaming is performed, the cutting fluid must be directly The center of the end of the reamer head 20 flows out, so it is necessary to match the long adjusting bolt 31. When the long adjusting bolt 31 is screwed into the screw hole 25, the side lateral flow hole 26 is closed, and the long adjusting bolt 31 is provided through. The through hole 311, so the cutting fluid will pass through the through hole 12 of the tool spindle 10, the fluid perforation 24 of the reamer head 20 and flow out through the through hole 311 of the long adjustment bolt 31, and enter the chip flute 23 through the end of the blind hole. When it is discharged outwards, it is lubricated and cooled, and when the coolant flows upward, the iron scraps are taken away and flow out toward the blind holes.

Referring to Fig. 6, the embodiment of the perforating reaming operation, when the perforation reaming is performed, the cutting fluid must flow out from the lateral flow hole 26 of the reamer head 20, so it is necessary to match the short adjustment bolt 32, which is short. The adjusting bolt 32 is screwed into the screw hole 25, and the short adjusting bolt 32 has a short length, so that the lateral side flow hole 26 is opened, so that the cutting fluid will pass through the through hole 12 of the tool spindle 10 and the reamer head 20 The fluid perforation 24 flows into the lateral flow hole 26 due to the blockage of the short adjustment bolt 31, and flows out through the chip discharge groove 23, and finally flows out toward the end of the perforation to achieve lubrication, cooling, and the coolant flows out toward the end of the perforation. The iron filings are carried away and flow out towards the end of the perforation.

From the foregoing description, the disposable reaming head 20 of the present invention can be applied to the reaming operation of the blind hole or the perforation by the change of the long and short adjusting screws 31, 32 without replacing the different reaming heads 20 The replacement speed is fast and convenient.

Referring to Fig. 7, which is an end view of the reaming head 20, the drilling position of the conical recess 211 is deflected by an appropriate angle θ with the horizontal axis, which is the angle θ in this embodiment. It is about 20°. Referring to FIG. 8, the disposable reamer head 20 is combined with the tool spindle 10, and the reamer head 20 must be rotated by an angle θ (20°) so that the fixing screw 40 is pressed against the conical recess 211, the reaming cutter When the head 20 rotates, the chip flute 23 is offset from the flange body 132, so that the flange body 132 does not block the chip flute 23, and the cutting fluid discharged through the flute 23 when the blind hole is reaming operation Iron filings are not blocked and affect the reaming operation.

Referring to FIG. 9, an embodiment in which the number of the screw holes 133 of the flange body 132 of the present invention and the conical recessed holes 211 of the reamer head 20 are changed is the same as that of the embodiment. The 133 and the conical recessed holes 211 are each set to 2 sets, and the fixing screws 40 are also increased. By the increase of the number, the force of the reamer head 20 is increased, and the higher torque can be withstood.

Referring to FIG. 10, the position of the conical recess 211 of the reamer head 20 of the present invention has a slight offset e from the position of the screw hole 133 provided in the tool spindle 10, and the reamer 20 is combined with the cutter. When the main shaft 10 is 10, the position of the conical recess 211 is lower than the screw hole 133. When the fixing screw 40 is forced, the reamer head 20 is biased upward, so that the reamer 20 and the flange body 132 are closely arranged. The effect of forcedness.

In summary, the discarding reaming head of the present invention can change the direction of the cutting fluid by using the combination of the long and short adjusting bolts, and only needs to replace the long and short screws in the direction of the water outlet, and does not need to replace the discarding reaming knife. Head, the change is very fast, this structural design is the first in the tool industry, profound and innovative.

10‧‧‧Tool spindle

11‧‧‧ Sockets

12‧‧‧Perforation

13‧‧‧Connecting Department

131‧‧‧ accommodating holes

132‧‧‧Flange body

133‧‧‧ screw holes

20‧‧‧ Reamer head

21‧‧‧ Socket shaft

22‧‧‧Reamer

23‧‧‧ Chip flutes

25‧‧‧ screw holes

26‧‧‧lateral orifice

30‧‧‧Adjusting bolts

40‧‧‧ fixing screws

‧‧‧‧ angle

Claims (5)

The utility model relates to a discarding reamer, which comprises a tool spindle, wherein the tool spindle end locks a discarded reamer head, wherein: the tool spindle has a connecting portion at one end thereof, and a central perforation is arranged in the central axis of the tool spindle. The other end of the tool main shaft is provided with a connecting portion, the end surface of the connecting portion is provided with a receiving hole, and the receiving hole is connected with the through hole, and the outer side end of the connecting portion is provided with a flange body extending toward both sides, the flange The outer side surface of the body is provided with a screw hole facing the radial direction and penetrating the receiving hole; the reamer head is provided with a set of connecting shafts at one end thereof, and the reamer head ring is provided with a plurality of reamer blades, one of each reamer blade The side of the reamer head is provided with an axially penetrating fluid perforation, and a screw hole of a suitable length is arranged at the other end of the reamer head, and the screw hole is connected with the fluid perforation. The adjusting bolt is screwed in the screw hole, and the plurality of lateral flow holes are obliquely communicated from the chip flute toward the inside of the screw hole, and have an appropriate angle with the central axis such that the lateral flow hole is downward and Outwardly, the chip is passed through the chip flute, and the outer edges of the sleeve shafts are It provided with conical recesses, with the cone flange recesses two outer lines corresponding to the screw hole edge surface of the body, by the fixing screws screwed into the connecting sleeved shaft portion. The disposable reamer of claim 1, wherein the adjusting bolt is set to be a short adjusting bolt, so that the cutting fluid flows to the lateral flow hole. The disposable reamer of claim 1, wherein the adjusting bolt is configured as a long adjusting bolt of a longer size, the long adjusting bolt is provided with a through hole, and the long adjusting bolt is to be sideways The lateral flow holes are closed so that the cutting fluid flows out of the through holes. The disposable reamer of claim 1, wherein the conical recess of the reaming head is positioned at an appropriate angle to the horizontal axis. The discarding reamer of claim 1, wherein the screw holes provided on both sides of the flange body and the conical recessed holes on both sides of the reamer head are at least one set or more.