Cutter

Abstract

The utility model discloses a cutter. The cutter comprises a cutter head and a cutter blade, the drill rod is provided with a chip removal space, and the tool bit is arranged at the front end of the drill rod; the transducer assembly is arranged on the drill rod and used for enabling the drill rod and the tool bit to achieve ultrasonic vibration. In this way, the cutter provided by the utility model not only has a chip removal space, but also has an ultrasonic auxiliary function.

Description

Technical Field

[0001] The present application relates to the technical field of ultrasonic machining, and in particular to a tool. Background Art

[0002] Ultrasonic machining is widely used in the machining of non-metallic, hard and brittle materials, as well as micro-holes and deep holes, because the tool tip has ultrasonic energy. Currently, the large-size deep hole drilling tools commonly used in the market often do not have ultrasonic auxiliary functions installed due to chip removal problems, or because ultrasonic assistance is introduced, the chip removal groove is abandoned. Utility Model Content

[0003] The present application provides a tool which has both chip removal space and ultrasonic assistance function.

[0004] In a first aspect, the present application provides a tool, comprising: a cutter head; a drill rod, the drill rod being provided with a chip removal space, wherein the cutter head is arranged at the front end of the drill rod; and a transducer assembly, the transducer assembly being arranged on the drill rod, for making the drill rod and the cutter head realize ultrasonic vibration.

[0005] The tool further comprises: a shell, the shell is sleeved on the drill rod, and the transducer assembly is located in the space provided by the shell.

[0006] A groove or a hole is arranged in the drill rod and extends to the housing along the axial direction of the drill rod to form a chip removal space.

[0007] The transducer assembly includes: an ultrasonic transducer, which is sleeved on the drill rod; and a fastener, which is arranged at one end of the ultrasonic transducer and is used to fix the ultrasonic transducer.

[0008] The transducer assembly further includes a cover plate, which is located between the ultrasonic transducer and the fastener and is sleeved on the drill rod.

[0009] The transducer assembly further includes an elastic connector, one end of which abuts against the fastener, and the other end of which abuts against the inner wall of the shell, and is sleeved on the drill rod.

[0010] The shell is provided with a through hole for accommodating the wiring harness of the ultrasonic transducer.

[0011] Wherein, a fixing part is arranged on the shell body for connecting with the tool using equipment.

[0012] The cutter head is provided with a first cutting structure and a second cutting structure, and the first cutting structure and the second cutting structure are discontinuous and share a common rotation axis.

[0013] Wherein, the gap between the first cutting structure and the second cutting structure is connected to the chip removal space.

[0014] The beneficial effects of the present application are as follows: Different from the prior art, the present application provides a tool that can reduce the actual processing time and the contact time between the tool and the workpiece during deep hole processing by setting a transducer assembly on the drill rod and setting a chip removal space on the drill rod, which is beneficial to heat dissipation. At the same time, due to the change in the force mode, continuous cutting is changed to intermittent cutting, and only lower stress needs to be borne, thereby extending the tool life. The longer chip removal space connected to the tail can discharge more chips faster during deep hole processing, preventing chips from accumulating at the tool tip, hindering processing, or hindering heat dissipation, causing the workpiece and tool to be deformed due to heat, and reducing processing accuracy and tool life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a tool provided by the present application;

[0017] Figure 2 It is a structural schematic diagram of another embodiment of a tool provided by the present application;

[0018] Figure 3 This application provides Figure 2 A cross-sectional structural schematic diagram of;

[0019] Figure 4 This application provides Figure 2 Another cross-sectional structural schematic diagram of;

[0020] Figure 5 This application provides Figure 2 Schematic diagram of the exploded structure of the tool shown;

[0021] Figure 6 This application provides Figure 2 A schematic diagram of a one-view structure;

[0022] Figure 7 This application provides Figure 6 Schematic diagram of the cross-sectional structure of the middle edge CC;

[0023] Figure 8 This application provides Figure 2 Another perspective structural diagram of;

[0024] Fig. 9 This application provides Figure 8Schematic diagram of the cross-sectional structure along the middle line BB;

[0025] Fig.10 It is a structural schematic diagram of an embodiment of a cutter head provided in the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] Ultrasonic machining is widely used in the machining of non-metallic, hard and brittle materials, as well as micro-holes and deep holes, because the tool tip has ultrasonic energy. Currently, the large-size deep hole drilling tools commonly used in the market often do not have ultrasonic auxiliary functions installed due to chip removal problems, or because ultrasonic assistance is introduced, the chip removal groove is abandoned.

[0029] Based on this, the present application proposes a tool, which can reduce the actual processing time and the contact time between the tool and the workpiece during deep hole processing by setting a transducer assembly on the drill rod and setting a chip removal space on the drill rod, which is conducive to heat dissipation. At the same time, due to the change in the force mode, from continuous cutting to intermittent cutting, only lower stress needs to be borne, thereby extending the tool life. The chip removal space on the drill rod connected to the tail can discharge more chips faster during deep hole processing, preventing chips from accumulating at the tip of the tool, hindering processing, or hindering heat dissipation, causing the workpiece and tool to deform due to heat, and reducing processing accuracy and tool life.

[0030] See also Figure 1 The tool 100 includes: a tool head 10, a drill rod 20 and a transducer assembly 30.

[0031] The tool head 10 is the part that comes into direct contact with the workpiece for processing.

[0032] The drill rod 20 is provided with a chip removal space A, and the cutter head 10 is provided at the front end of the drill rod 20. In some embodiments, a through hole is provided in the drill rod 20 to form a chip removal space. The through hole can be located at the center of the drill rod 20. An open end of the through hole is located at the cutter head 10, so that when the cutter head 10 processes a workpiece, cutting fluid, coolant and chips enter the chip removal space A from the open end and are discharged from the other open end of the through hole.

[0033] The transducer assembly 30 is arranged on the drill rod 20, and is used to make the drill rod 20 and the cutter head 10 realize ultrasonic vibration. The transducer assembly 30 can generate corresponding ultrasonic waves, so that the drill rod 20 and the cutter head 10 realize ultrasonic vibration. Specifically, the transducer assembly 30 can bring about ultrasonic vibration of the tip of the cutter head 10, so that when the tool 100 performs deep hole processing, the actual processing time can be reduced, the contact time between the tool and the workpiece can be reduced, and heat dissipation is facilitated. At the same time, due to the change in the force mode, from continuous cutting to intermittent cutting, only lower stress needs to be borne, thereby extending the tool life.

[0034] In some embodiments, the transducer assembly 30 may be integrally formed and may be fixedly connected to the drill pipe 20 by welding or other secure connection methods.

[0035] In some embodiments, the tool head 10 includes a support pad / guide rod and a corresponding spaced cutting structure. The spaced cutting structure and the chip removal space A enable the support pad / guide rod to be cooled by the coolant in a more efficient manner, improve the chip removal effect, reduce the possibility of chips adhering to the support pad / guide rod and the inner wall of the borehole, and avoid dangers (such as friction overheating, increased tool force) that lead to a reduction in tool life.

[0036] The tool 100 provided in the present application, by setting a transducer assembly 30 on the drill rod 20 and setting a chip removal space A on the drill rod 20, enables the ultrasonic vibration of the transducer assembly 30 to assist the processing during deep hole processing, reduces the actual processing time, reduces the contact time between the tool 100 and the workpiece, and is conducive to heat dissipation. At the same time, due to the change in the force mode, from continuous cutting to intermittent cutting, only lower stress needs to be borne, thereby extending the tool life. The chip removal space A connected from the cutter head 10 to the tail of the drill rod 20 can discharge more chips faster during deep hole processing, prevent chips from accumulating at the tip of the tool, hinder processing, or hinder heat dissipation, causing the workpiece and the tool 100 to be deformed by heat, and reduce processing accuracy and tool life.

[0037] Continue reading Figure 1The transducer assembly 30 includes an ultrasonic transducer 31 and a fastener 32. The ultrasonic transducer 31 is sleeved on the drill rod 20. The fastener 32 is arranged at one end of the ultrasonic transducer 31 to fix the ultrasonic transducer 31 and prevent the ultrasonic transducer 31 from sliding. From the axial direction of the tool, the cutter head 10, the ultrasonic transducer 31 and the fastener 32 are arranged in sequence.

[0038] In some embodiments, see Figure 2 and Figure 3 The tool 100 comprises: a tool head 10, a drill rod 20, a transducer assembly 30 and a housing 40. The housing 40 is sleeved on the drill rod 20, and the transducer assembly 30 is located in a space provided by the housing 40.

[0039] The drill rod 20 is provided with a groove or hole extending axially from the drill rod 20 to the housing 40 to form a chip removal space. The groove or hole in the drill rod 20 is a through groove or hole.

[0040] The transducer assembly 30 includes: an ultrasonic transducer 31 and a fastener 32. The ultrasonic transducer 31 is sleeved on the drill rod 20. The fastener 32 is arranged at one end of the ultrasonic transducer 31, and is used to fix the ultrasonic transducer 31 to prevent the ultrasonic transducer 31 from sliding. From the axial direction of the tool, the cutter head 10, the ultrasonic transducer 31 and the fastener 32 are arranged in sequence. That is, the ultrasonic transducer 31 and the fastener 32 are sleeved on the drill rod 20 and accommodated in the space provided by the housing 40. The ultrasonic transducer 31 can make the tool 100 vibrate periodically with a certain amplitude. By using ultrasonic assisted drilling, the cutting force and cutting heat can be reduced, the processing quality can be effectively improved, and the tool life can be increased.

[0041] In some embodiments, one end of the shell 40 is connected to the protrusion 21 on the outer peripheral surface of the drill rod 20, and the other end of the shell 40 away from the cutter head 10 can be flush with one end of the drill rod 20. The structure is simple and easy to install and connect.

[0042] In some embodiments, in deep hole drilling, chips and coolant will flow through the ultrasonic transducer 31 inside and outside, and in order to protect the waterproofness of the ultrasonic transducer 31, the cavity where the ultrasonic transducer 31 is located must be isolated from the coolant and chips, so the housing 40 and the drill rod 20 need to be sealed. For example, welding connection is used for sealing at the connection between the housing 40 and the drill rod 20, or reasonable sealing connection such as screw + thread sealant connection can be selected, as well as other sealing connection methods that can ensure the rigidity of the cutter head 10.

[0043] In some embodiments, see 2 and Figure 4The tool 100 includes: a cutter head 10, a drill rod 20, a transducer assembly 30 and a housing 40. The housing 40 is sleeved on the drill rod 20, and the transducer assembly 30 is located in the space provided by the housing 40. The transducer assembly 30 includes: an ultrasonic transducer 31, a fastener 32 and a cover plate 33. The cover plate 33 is located between the ultrasonic transducer 31 and the fastener 32, and is sleeved on the drill rod 20 to space the fastener 32 and the ultrasonic transducer 31, so as to protect the ultrasonic transducer 31. In some embodiments, in order to facilitate the opening of the hole, a nut is selected instead of a pre-tightening screw to fix the cover plate 33 behind the ultrasonic transducer 31.

[0044] In some embodiments, see Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The tool 100 includes: a tool head 10, a drill rod 20, a transducer assembly 30 and a housing 40. The housing 40 is sleeved on the drill rod 20, and the transducer assembly 30 is located in the space provided by the housing 40. The transducer assembly 30 includes: an ultrasonic transducer 31, a fastener 32, a cover plate 33 and an elastic connector 34. One end of the elastic connector 34 abuts against the fastener 32, and the other end of the elastic connector 34 abuts against the inner wall of the housing 40, and is sleeved on the drill rod 20. When the ultrasonic transducer 31 is working, the elastic connector 34 can absorb the ultrasonic energy of the ultrasonic transducer 31 toward the elastic connector 34, thereby preventing the ultrasonic vibration from being transmitted to the rear machine tool tooling.

[0045] In some embodiments, in order to protect the ultrasonic transducer 31, the elastic connector 34 and the housing 40 may be connected by a sealant to protect the ultrasonic transducer 31. In other embodiments, other reasonable sealing connection methods may also be selected. On the other hand, to achieve good seismic isolation, the elastic connector 34 may be made of silicone material to achieve the purpose of seismic isolation.

[0046] Furthermore, the shell 40 is provided with a via hole for accommodating the wiring harness of the ultrasonic transducer 31. In some embodiments, the shell 40 is provided with a first via hole 41 and a second via hole 42, the first via hole 41 is used to accommodate the positive wiring harness of the ultrasonic transducer 31, and the second via hole 42 is used to accommodate the negative wiring harness of the ultrasonic transducer 31. Alternatively, the first via hole 41 is used to accommodate the negative wiring harness of the ultrasonic transducer 31, and the second via hole 42 is used to accommodate the positive wiring harness of the ultrasonic transducer 31. As for the end of the wiring harness of the ultrasonic transducer 31, the wiring harness is led out of the shell 40 by the via hole and connected to the signal receiving module of the power supply module. Therefore, it is possible to choose to fill the via hole with sealant for sealing.

[0047] Furthermore, a fixing portion is provided on the housing 40 for connecting with a tool using device, such as a corresponding machine tool.

[0048] The fixing part is in the form of an inner spiral or an outer spiral. The fixing part is fixed to the machine tool in the form of an inner spiral or an outer spiral, and is used to realize the rotation and / or movement of the tool through the control of the machine tool, so as to process the workpiece. In other embodiments, the fixing part can adopt a pneumatic standard interface and be installed on a horizontal milling machine.

[0049] For further information, see Fig.10 The cutter head 10 in any of the above embodiments is provided with a first cutting structure 11 and a second cutting structure 12, and the first cutting structure 11 and the second cutting structure 12 are discontinuous and share a common rotation axis.

[0050] Furthermore, since the first cutting structure 11 and the second cutting structure 12 are not continuous, there is a gap between the first cutting structure 11 and the second cutting structure 12. Therefore, the gap between the first cutting structure 11 and the second cutting structure 12 is connected to the chip removal space A, so that when deep hole processing is performed, the chips and cutting fluid generated by the first cutting structure 11 and the second cutting structure 12 on the workpiece can flow into the chip removal space A through the gap between the first cutting structure 11 and the second cutting structure 12, and then be discharged through the chip removal space A.

[0051] In some embodiments, the first cutting structure 11 and the second cutting structure 12 may be provided with corresponding cutting parts (knife grains), and the cutting parts are used to cut the target workpiece. For example, part of the cutting parts are distributed on the periphery of the cutter head 10 for reaming, and part of the cutting parts are distributed on the tip of the cutter head 10 for drilling. In this process, the cut waste and the cutting fluid used for cooling and lubrication will be discharged through the chip removal space A, thereby reducing the accumulation of waste during the processing, further reducing the time for manual cleaning of waste, and improving processing efficiency.

[0052] In the tool 100 provided in any of the above embodiments, in order to facilitate chip removal, the chip removal space A can be formed by opening a central through hole on the drill rod 20 of the tool 100. And in order to prevent tool deformation from affecting the processing accuracy, a connection structure is retained at the end face of the cutter head 10 to improve the rigidity of the cutter head 10. Some of the blade grains are distributed on the periphery for reaming, and some of the blade grains are distributed on the tip for drilling. The ultrasonic transducer 31 connected to the drill rod 20 behind the tool 100 can also be made into a central through hole, so that its central through hole and the chip removal space A are consistent, and while transmitting ultrasonic vibration to the cutter head 10 through surface contact, smooth chip removal is ensured.

[0053] Furthermore, in some embodiments, a through pipe is installed inside the ultrasonic transducer to replace the connecting bridge, which is responsible for guiding the chips to flow out completely. The connecting bridge does not use interference connection, but uses other connection methods, such as glue bonding.

[0054] Furthermore, in the tool 100 provided in any of the above embodiments, the structure of the chip removal space A can be changed, and instead of using a central through hole, the chips can be removed through an outer circle, and the chips can leave the cavity between the inner wall of the tool housing and the outer wall of the ultrasonic transducer, and some isolation structures can be set to protect the ultrasonic transducer from being scratched by the chips.

[0055] In summary, the tool 100 provided in the present application is a large-sized ultrasonic deep hole drill that takes into account the chip groove. By integrating the ultrasonic transducer 31 with the chip groove / hole, the tool 100 can not only enjoy the low cutting heat and low stress brought by ultrasonic vibration, but also can promptly discharge the large amount of chips generated by the tool tip during deep hole processing to prevent blockage.

[0056] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A knife, It is characterized in that The tool comprises: A drill rod, wherein the drill rod is provided with a chip removal space; A cutter head, the cutter head being arranged at the front end of the drill rod; A transducer assembly is arranged on the drill rod and is used to make the drill rod and the cutter head realize ultrasonic vibration.

2. The cutting tool according to claim 1, It is characterized in that The tool also includes: The shell is sleeved on the drill rod, and the transducer assembly is located in the space provided by the shell.

3. The tool according to claim 2, It is characterized in that The drill rod is provided with a groove or a hole extending axially from the drill rod to the housing to form the chip removal space.

4. The cutting tool according to claim 2, It is characterized in that The transducer assembly comprises: An ultrasonic transducer, wherein the ultrasonic transducer is sleeved on the drill rod; A fastener is arranged at one end of the ultrasonic transducer and is used to fix the ultrasonic transducer.

5. The cutting tool according to claim 4, It is characterized in that The transducer assembly further comprises: A cover plate is located between the ultrasonic transducer and the fastener and is sleeved on the drill rod.

6. The cutting tool according to claim 4, It is characterized in that The transducer assembly further comprises: An elastic connector, one end of which abuts against the fastener, and the other end of which abuts against the inner wall of the shell, is sleeved on the drill rod.

7. The cutting tool according to claim 4, It is characterized in that The housing is provided with a through hole for accommodating the wiring harness of the ultrasonic transducer.

8. The cutting tool according to claim 2, It is characterized in that The housing is provided with a fixing portion for connecting with a tool using device.

9. The cutting tool according to claim 1, It is characterized in that The cutter head is provided with a first cutting structure and a second cutting structure, wherein the first cutting structure and the second cutting structure are discontinuous and share a common rotation axis.

10. The cutting tool according to claim 9, It is characterized in that A gap between the first cutting structure and the second cutting structure is communicated with the chip removal space.

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