TW201701989A - A tungsten steel heating combination cutter pole with wide application - Google Patents

Abstract

This invention relates to a tungsten steel heating combination cutter pole with wide application, which includes a pole body and a cutterblock. Said pole body is made integral by tungsten steel to increase the weight of the pole body, one end of the pole body has a combining circumference for heating combination the cutterblock, and part of the combining circumference is set with a external thread. Said cutterblock is provided with a combining recess which is for connecting the combining circumference of the pole body, and part of the combining recess is set with a internal thread. Therefore, the pole body and the cutterblock can be inserted each other by heating expansion the cutterblock, and the external thread of combining circumference of pole body and the internal thread of cutterblock can be twisted each other to assist the combination of the pole body and the cutterblock and to prevent the cutterblock separated from the pole body when the machine in high speed rotating. Moreover, said cutterblock can be provided with a knife groove for set with a knife before combining tha pole body and cutterblock, so that the length of the knife can be shortened to ensure that the knife will not shack, to reduce the interference range of cutter pole, and to ensure the precision of processing.

Description

Universal tungsten steel sintered shank

The invention relates to a general-purpose tungsten steel sintering shank, in particular to a shank portion which is integrally formed by a metallurgical method using a tungsten steel material to enhance the weight of the shank portion and is combined with the shank portion and the shank portion. Previously, the shank seat was appropriately expanded by a sintering method to integrate the shank portion with the shank holder, and a sipe was provided on the arbor to set the cutter, and then the shank holder was heated by sintering. The tool is completely combined with the sipe of the tool holder to form a replaceable structure, thereby reducing the interference outer diameter of the arbor, thereby shortening the elongation outside the tool, and the cutter does not sway when the processing machine drives the arbor to rotate, so as to improve the machining precision. Degree, and to avoid hitting the workpiece, to reduce the incidence of damage.

According to the tools used in the current rotary processing machine, such as Taiwan's new bulletin No. 532246, "Corner chuck type fixed collet structure improvement" and new patent No. M412022 "back pull type shank chuck lock structure", collet (The following Taiwan New Bulletin No. 532246 explains that the circumference of the body is long slits, and the bottom end does not penetrate the bottom end of the collet, forming a number of elastic clips arranged at intervals, and a short slot at the bottom end. The upper end of the short split slot is staggered into the bottom end of the upper elastic clamping piece, and is formed through the bottom end of the collet, forming a plurality of bottom elastic clamping pieces arranged at intervals; when assembling the collet, the screw seat is placed from the bottom plug hole And screwed into the through hole of the chuck, set the required depth of the protruding bottom hole, and put the bolt into the hole at the bottom of the chuck, then the bolt can pass through the polygonal hole of the screw seat and the screw lock cylinder Clip, and force the lock, form a bolt with a screw base as the base, lock the collet and force the collet. When not using the collet to be removed, first withdraw the bolt, and then insert the hexagonal rod tool into the polygonal hole of the screw seat, then turn the screw seat to advance the screw seat in the direction of the bottom plug hole, and then the top mover clip. The collet is clamped out of the bottom of the collet. The long slit and the short slit are formed by the collet, and the elastic clamping piece which penetrates the bottom end and penetrates the bottom end of the elastic clamping piece is formed to clamp the cutter (milling cutter).

However, the chucks used by the above-mentioned conventionals are made of alloy steel and processed by machining. Although the material cost is low, the density of the alloy steel is slightly inferior to that of tungsten steel. The weight of the head is not as good as that of the tungsten steel metallurgical mold. When the conventional chuck is combined with a rotary processing machine (such as a milling machine) and rotated for the rotary processing machine, it is easy to produce a certain degree of sloshing, resulting in a combination of the collet and the cutter. The resonance result makes the tool easy to sway, which reduces the precision of the machining, especially if the mold to be processed itself has insufficient space for the tool to penetrate, or when more precise irregular surface processing is required, It can be found that the aforementioned prior art cannot cope with the problem. In order to meet the needs of various processing tools, the length of the chuck will also be adjusted, and the longer the length of the chuck, the more obvious the swaying degree, and the accuracy will be reduced, resulting in more serious consequences.

Secondly, the clip of the prior art is provided with an elastic piece, which can be matched with the outer diameter of the cutter of various specifications by the opening and closing property of the elastic piece, but when the collet clamps the cutter, it is actually attached to each elastic piece. There is a slight gap between them. When the rotary processing tool is matched with the tool clamped by the collet, when the metal workpiece is processed, the metal scrap generated by the metal workpiece is uncontrolled and accumulated in the gap. Even because the metal chips enter the gap of the collet, the tool is deflected, and the problem of proper accuracy is lost. Therefore, the tool must be removed and cleaned every time it is used, or the tool is tilted. It will become more and more serious, causing processing defects and affecting the finished product quality of the workpiece.

Furthermore, the above-mentioned prior art, the biggest disadvantage is that as shown in FIG. 1 or FIG. 2, the conventional tool holder 1 is provided by the cutter collet 11 provided at the end 10 thereof, so that the cutter 2 can be provided. It is replaced smoothly. Therefore, the cutter collet 11 is provided with a plurality of elastically closed flaps, and the cutters are opened and closed to allow the cutter 2 to enter or exit for the tool change operation. It is economical to let the arbor to be replaced with different tool diameters. However, since the conventional cutter bar needs to be provided with the cutter collet 11 to fix the cutter, it is necessary to increase the interference between the end 10 of the cutter bar 10 and the outer diameter D1 to be between 14 and 16 mm. Therefore, when the workpiece A needs to be predetermined. In the planing process, in order to avoid the interference of the outer end D0 and D1 of the cutter bar 1 against the workpiece A, the machining surface area A0 of the workpiece A is damaged, and the only way is to lengthen the extension length of the cutter 2. L1, however, the structure of the cutter 2 clamped by the cutter collet 12 has caused the cutter and the cutter bar to be completely unable to be completely combined. Even if the cutter is not rotated at a high speed, the sway of the cutter is felt by the force of the finger, and When the cutter bar is set on the processing machine and then the cutter bar is driven at high speed, the sway phenomenon of the tool will be more obvious. Therefore, the machining surface area A0 of the workpiece A cannot achieve the accuracy, and must be The operation and calibration of the experienced operation engineer from time to time not only affects the completion time of the workpiece, but also the measurement calibration needs to be experienced, otherwise it cannot be achieved, which makes the metal mold processing factory unable to achieve automation. Operation to reduce manpower and improve product precision.

Secondly, if the extension length L1 of the tool is not increased, as described above, the conventional tool bar 1 has an interference outer diameter of between 14 and 16 mm, and the interference is excessive when the tool operates according to the programmed process. The outer diameter will cause the arbor to collide with the machining surface area A0 of the workpiece A, causing the machining surface area A0 to be impacted and affecting the precision, and even causing damage to the workpiece, and the new machining parts need to replace the damage of the reworker.

For this reason, the present inventors have accumulated many years of development of related precision molds, and the present invention has been invented for the problem that the tool using the conventional processing tool is easy to shake, and the outer diameter of the interference at the end of the holder is too large, resulting in insufficient processing precision.

The object of the present invention is to provide a general-purpose tungsten steel sintered shank, which is sintered and combined with a shank portion integrally formed of a tungsten steel material to prevent the yaw state from occurring and avoid the knives. The rod seat is shaken by high-speed rotation, and the sipe is further arranged on the arbor to weld the tool. After the shank seat is cooled, the tool and the shank seat can be fully combined to reduce the interference outer diameter of the arbor between 8 Between 9mm, the elongation outside the tool can be shortened, and the tool is never biased to ensure the precision of the machining.

In order to achieve the above object, the general-purpose tungsten steel sintered shank of the present invention is formed by integrally forming a shank portion by a metallurgical method using a tungsten steel material to increase the weight of the shank portion, and then the shank portion is The combined ring circumference is combined with the joint groove of the tool holder, and the sipe is arranged on the arbor to set the cutter, and then the squeegee is fully combined with the shank seat to shorten the outer extension of the cutter. To ensure that the tool does not sway when the tool holder rotates the tool bar, the outer diameter of the tool bar is reduced, so as to avoid collision with the workpiece, causing damage and ensuring the precision of the machining.

The general-purpose tungsten steel sintered shank of the present invention is provided with a partial length thread outside the joint ring of the shank portion, and then a corresponding length of the internal thread is arranged in the joint groove of the shank seat; thus, when sintering The method combines the shank portion and the shank seat first, and the internal thread provided by the coupling groove of the external thread and the shank seat of the shank portion is forced to be combined and assisted by the hand tool. In order to prevent the cutter holder from being detached from the shank portion when the processing machine rotates at a high speed, the risk is caused.

In the general-purpose tungsten steel sintered shank of the present invention, wherein the outer diameter of the joint circumference of the shank portion is 8 mm, the inner diameter of the joint groove of the shank holder is smaller than the outer diameter of the joint circumference of the shank portion. For example, it can be about 7.98 mm, and the method can be used to force the method of the shank portion to be combined with the holder, so as to ensure that the two are combined and never shake.

The utility model relates to a general-purpose tungsten steel sintering arbor according to the present invention, wherein the outer diameter of the connecting ring of the shank portion is equal to the inner diameter of the internal thread of the internal thread provided by the coupling groove of the shank holder; For example, each is 9mm. When the internal thread of the coupling groove of the thread and the holder is combined with the auxiliary bolt by the hand tool forcing the joint of the shank portion, it is ensured that the shank seat is absolutely impossible. The detachment of the shank is dangerous.

In order to enable the examiner to fully understand the progressive technical features of the general-purpose tungsten steel sintered shank of the present invention, the following is explained in the following drawings.

3 and 4, the general-purpose tungsten steel sintered shank of the present invention comprises at least: a shank portion 3 which is integrally formed by a metallurgical technique using a tungsten steel material, and the density of the tungsten steel material itself is greater than The characteristics of the alloy steel are used to increase the weight of the shank portion 3. Therefore, if a shank portion having a length of time is formed in accordance with various types of processing machines, the stable combination of the shank portion 3 and the processing machine can be ensured, and the arbor is fixed. Department 3 will never shake itself. One end of the aforementioned shank portion 3 is provided for the shank holder 4, and the two are combined by a sintering method.

As shown in FIGS. 5 and 6, one end of the shank portion 3 is provided with a coupling ring 30. The outer diameter of the coupling ring 30 is of course smaller than the outer diameter of the shank portion 3, and the coupling ring 30 is provided with a partial length thread. 31 is to cooperate with the internal thread provided by the coupling groove of the knife holder to serve as a more stable combination of the auxiliary cutter portion and the holder. And the shank portion 3 is provided with a combined cutting surface 32 of the hand tool, which is combined with the hand tool to rotate the shank portion 3 (see FIG. 3).

7 and 8, the holder 4 of the present invention is coupled to the holder portion 3, and the outer wall surface 40 of the holder 4 is divided into an upper end portion 400 and a lower end portion 401, and the upper end portion 400 is straight. The lower end portion 401 has a tapered cylindrical shape. The lower end portion 401 of the shank holder 4 is configured to reduce the interference outer diameter of the arbor to be between 8 and 9 mm, and the shank 4 is provided with the coupling groove 41. The coupling ring 30 of the shank portion 3 can be coupled to each other, and the coupling groove 41 is disposed adjacent to the upper portion of the internal thread 42 to match the coupling circumference 30 of the shank portion 3; The thread 31 is provided, and the outer diameter of the external thread 31 of the joint circumference 30 of the shank portion 3 is equal to the inner diameter of the internal thread 42 of the joint groove 41 of the shank holder 4. The shank holder 4 is provided with a sipe 43. The sipe 43 and the coupling groove 41 have the same center line and are linear grooves to match the shape of the shank of the tool. Therefore, it is not limited to a straight shape, and if the shape of the handle of the tool is special, it can be processed into the groove of the special shape. The shank holder 4 is provided with a venting hole 44, and the venting hole 44 is penetrated from the outside of the shank holder 4 to the abutment of the sipe 43 and the coupling groove 41, so that after the cutter 5 is firstly combined with the sipe 43 When the shank portion is combined with the shank holder, the air remaining in the coupling groove is discharged by the vent hole 44, and the resistance when the shank portion is combined with the holder is eliminated, thereby allowing the knife to be knives. The rod portion and the knife holder seat are completely combined.

9 and 10, when the shank portion 3 and the shank holder 4 of the present invention are coupled to each other, the coupling groove 30 provided at one end of the shank portion 3 and the coupling groove 41 provided by the shank holder 4 are provided. It is preferable that the outer diameter of the joint circumference 30 of the shank portion 3 is smaller than the inner diameter of the joint groove 41 of the shank holder 4, for example, the outer diameter of the joint circumference 30 of the shank portion 3; The inner diameter of the coupling groove 41 of the shank holder 4 is 7.98 mm. Of course, the outer diameter of the coupling ring 30 of the shank portion 3 is equal to the coupling groove 41 of the shank holder 4, and is also With the structure, the sintering method first heats the holder 4 to cause the above-mentioned holder 4 to expand properly. At this time, the operator can quickly combine the circumference of the holder portion 30 with the holder 4 The coupling grooves 41 are coupled to each other, and at the same time, the tool holder 3 is rotated by the hand tool, so that the external thread 31 of the coupling ring 30 of the shank portion 3 is provided with the coupling groove 41 of the shank holder 4. The internal threads 42 can be bolted to each other to form an auxiliary combination of the shank portion and the shank holder 4, thereby preventing the arbor from being caused when the processing machine rotates at a high speed. Departing from the arbor portion, causing health hazards. After the shank holder 4 is cooled, the shank holder 4 and the shank portion 3 can be combined into a shank, or the specially shaped shank holder 4a (including the cutter) and the shank portion 3 can be directly combined. Nothing.

9 and 10, before the cutter 5 and the holder 4 of the present invention are combined with each other, the sintering method first heats the holder 4 to cause the holder 4 to appropriately expand. At this time, the operator The shank portion 50 of the tool 5 and the sipe 43 of the shank holder 4 can be quickly combined with each other. After the shank holder 4 is cooled, the tool can be combined with the shank holder 4 to reduce the length of the outer extension of the tool. In order to ensure that the high-speed rotation of the tool can maintain a linear state, to ensure the precision of processing. If the tool is to be replaced, it is only necessary to heat the holder 4 again to cause the above-mentioned holder 4 to expand properly. At this time, the operator must quickly remove the tool 5 from the sipe 43 of the holder 4 and The shank portion 50 of the tool 5 to be replaced extends into the sipe 43 of the shank holder 4. After the shank holder 4 is cooled, the tool and the shank holder can be fully combined to complete the replacement action.

As shown in Fig. 11, when the cutter bar of the present invention is combined with the cutter, since the elongation of the cutter can be reduced, there is no residual gap between the cutter and the cutter holder, and the cutter drives the cutter at a high speed for processing. During the machining process, the tool does not yaw and the machining precision is improved. Moreover, because the combination of the cutter and the tool holder is combined, the elongation L2 outside the tool can be shortened, and the swaying phenomenon that the tool can be driven by the rotation of the processing machine can be removed, and the processing efficiency and accuracy can be improved. Moreover, in the present invention, as compared with the conventional ones of Figs. 1 and 2, the same tool extension length, the depth of processing of the present invention will be greater than that of the prior art, and the number of times the operator adjusts the tool can be reduced to improve the processing efficiency. Moreover, the interference outer diameter D2 of the shank of the present invention is about 8 to 9 mm, and the interference outer diameter D1 of the conventional ones of FIGS. 1 and 2 is between about 14 and 16 mm, and the interference outer diameter of the present invention is better than the conventional one. It can be reduced by about 6 to 8mm, so that the arbor can drive the tool deeper into the processing surface area of the workpiece A, and it is less prone to the problem of colliding with the workpiece, which can reduce the processing damage and improve the efficiency. It can be seen that the invention has practicality. Novelty and progress, the composition of this case.

3‧‧‧Toolbar
30‧‧‧Combined circle
31‧‧‧ external thread
32‧‧‧Combined facets
4‧‧‧Tool holder
40‧‧‧ outer wall
400‧‧‧Upper end
401‧‧‧ lower end
41‧‧‧ Combination slot
42‧‧‧ internal thread
43‧‧‧ knife slot
44‧‧‧ venting holes
4a‧‧‧Tool holder
5‧‧‧Tools
50‧‧‧ handle
L2‧‧‧External elongation
D2‧‧‧Interference outer diameter

Fig. 1 is a view showing a state in which a tool of the first conventional tool holder is processed for a workpiece. Fig. 2 is a view showing a state in which a tool of a conventional tool holder is processed for a workpiece. Figure 3 is a cross-sectional view showing a first embodiment of the present invention. Figure 4 is a cross-sectional view taken along line A-A of Figure 3. Figure 5 is a cross-sectional view of the shank portion of the present invention. Figure 6 is a cross-sectional view taken along line B-B of Figure 5; Figure 7 is a view of the holder of the present invention. Figure 8 is a cross-sectional view taken along line C-C of Figure 7; Fig. 9 is a cross-sectional view showing a first embodiment of the operation of the second embodiment of the tool holder according to the present invention. Fig. 10 is a cross-sectional view showing the second operation example of the second embodiment of the tool holder according to the present invention in combination with the cutter. Figure 11 is a view showing a state in which a workpiece is processed in accordance with the present invention.

3‧‧‧Tools

30‧‧‧Combined circle

31‧‧‧ external thread

32‧‧‧Combined facets

4‧‧‧Tool holder

40‧‧‧ outer wall

41‧‧‧ Combination slot

42‧‧‧ internal thread

43‧‧‧ knife slot

44‧‧‧ venting holes

Claims (9)

A general-purpose tungsten steel sintering shank comprises at least a shank portion formed by integrally forming a tungsten steel material by a metallurgical method, and one end of the shank portion is provided with a coupling ring to be sintered and combined with the shank holder. The coupling ring is provided with a part of the length of the outer thread; the shank holder is provided with the coupling groove and the combined rim of the shank portion, and the coupling groove is provided with a partial length of the internal thread; when the shank is sintered The part and the holder are combined with each other, and the internal thread provided by the coupling groove of the external thread and the holder of the holder is combined with the auxiliary tool by the hand tool to prevent the high-speed rotation. The shank holder is detached from the shank portion; the arbor is provided with a sipe, and the squeezing method allows the knives to be completely combined with the shank holder to shorten the outer extension of the cutter, the cutter does not sway during rotation, and the interference of the arbor can be reduced The outer diameter avoids collision with the workpiece, causing damage and ensuring the precision of the machining. The general-purpose tungsten steel sintered shank according to claim 1, wherein the shank portion is integrally formed by a metallurgical technique using a tungsten steel material, and the density of the tungsten steel material itself is greater than that of the alloy steel to increase The weight of the shank. The general-purpose tungsten steel sintered shank according to claim 1, wherein the outer diameter of the joint circumference of the shank portion is slightly larger than the inner diameter of the joint groove of the shank holder. The general-purpose tungsten steel sintered shank according to claim 1, wherein the shank portion is provided with a joint cutting surface, and the hand tool is used to rotate the shank portion. The general-purpose tungsten steel sintered shank according to claim 1, wherein the outer wall surface of the shank holder is divided into an upper end portion and a lower end portion, the upper end portion is a straight cylindrical shape, and the lower end portion is a tapered cylindrical shape. The lower end of the aforementioned shank holder allows the outer diameter of the arbor to be between 8 and 9 mm. The general-purpose tungsten steel sintered shank according to claim 1, wherein the sipe of the shank holder and the coupling groove have the same center line to match the shape of the shank of the tool. The general-purpose tungsten steel sintered shank according to claim 1, wherein the arbor is provided with a venting hole, and the venting hole is penetrated from the outer side of the shank to the adjacent portion of the sipe and the coupling groove, by The venting hole discharges the air remaining in the coupling groove or the sipe, and excludes the air resistance when the shank portion is combined with the shank holder or the shank holder and the cutter. The general-purpose tungsten steel sintered shank according to claim 1, wherein before the shank portion and the shank holder are combined with each other, the sintering method first heats the shank holder to cause the shank holder to appropriately expand. At this time, the operator must quickly combine the joint ring of the shank portion with the joint groove of the shank seat, and the shank seat and the shank portion can be combined into a shank after the shank seat is cooled. According to the general-purpose tungsten steel sintering arbor according to claim 1, wherein the cutter and the shank are combined with each other, the sintering method first heats the shank holder to cause the shank seat to appropriately expand. The operator must quickly combine the shank of the tool with the sipe of the shank seat. After the shank seat is cooled, the tool can be combined with the shank seat to reduce the length of the outer extension of the tool to ensure The tool that rotates at high speed can still maintain the linear state, ensuring the precision of machining.