Cutter

Abstract

The utility model relates to the technical field of machining equipment, in particular to a tool which comprises a tool bit and a tool bar. The tool bit comprises a body, a broaching tool part and a drilling part, the broaching tool part is arranged at one end of the body, the drilling part is arranged at the end, away from the body, of the broaching tool part, the broaching tool part comprises at least two broaching tool bodies arranged in a stepped mode, and the diameters of cutting edges of the broaching tool bodies are sequentially increased from the drilling part to the body. The diameter of the cutting edge in the drilling part is smaller than that of the smallest cutting edge in the reamer part; the cutter bar is connected with the end, away from the drilling part, of the body and provided with a spiral chip groove in the length direction of the cutter bar. According to the reamer, the cutting force borne by the blade of each reamer body is effectively reduced, and the blade is protected.

Description

Technical Field

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

[0002] The vehicle's lubrication system includes an oil pan, an oil pump, an oil filter, a main oil channel, a pressure limiting valve, an oil pump suction pipe, a crankcase ventilation device and an oil pressure switch, among which the main oil channel is used to transport lubricating oil to various lubrication parts.

[0003] There are two existing main oil channel forming methods, one is casting, and the other is drilling from one or both ends of the body using a deep hole drill or a gun drill.

[0004] However, when drilling the main oil channel on the vermicular iron body, the deep hole drill or gun drill is subjected to high cutting force, which is easy to wear the deep hole drill or gun drill. Utility Model Content

[0005] The present application provides a tool for solving the problem that when drilling a main oil channel on a vermicular iron body, a deep hole drill or a gun drill is subjected to a high cutting force and is easily worn.

[0006] The present application provides a cutting tool, comprising a cutting head and a cutting rod;

[0007] The cutter head comprises a body, a reaming portion and a drilling portion, wherein the reaming portion is arranged at one end of the body, and the drilling portion is arranged at an end of the reaming portion away from the body, and the reaming portion comprises at least two reaming bodies arranged in a stepped manner, wherein the diameter of the blade of each reaming body increases successively from the drilling portion to the body, and the diameter of the blade in the drilling portion is smaller than the diameter of the smallest blade in the reaming portion;

[0008] The tool rod is connected to one end of the body away from the drilling part, and the tool rod is provided with a spiral chip removal groove along the length direction thereof.

[0009] In a possible implementation, in the tool provided by the present application, the difference in blade diameters in adjacent reamer bodies is between 1 mm and 2.5 mm.

[0010] In a possible implementation, the tool provided by the present application has a cutting edge of the expansion body close to the body transitioning into a circular arc with the outer peripheral wall of the body.

[0011] In a possible implementation, the tool provided in the present application has a drilling portion comprising a drilling head and a drilling rod, wherein the drilling head is connected to the drilling rod, and the drilling rod is connected to the expanding portion.

[0012] In a possible implementation, in the tool provided by the present application, an end of the drilling head facing away from the drilling rod is configured as a tip.

[0013] In a possible implementation, in the tool provided by the present application, the blade diameter of the drilling head is between one third and one half of the diameter of the workpiece to be machined.

[0014] In a possible implementation, in the tool provided by the present application, the length of the drilling rod is 1-1.5 times the diameter of the drilling head blade.

[0015] In a possible implementation, the cutting tool provided by the present application further includes a connecting piece;

[0016] One end of the knife rod has an inserting part, and the end of the body away from the expanding knife part has an inserting groove, the inserting part is inserted into the inserting groove, and the connecting piece is configured to connect the body and the inserting part to connect the knife rod to the body.

[0017] In a possible implementation, the tool provided in the present application has a body with a positioning shaft disposed in the insertion groove, and a positioning hole is provided on the insertion portion, and the positioning shaft is inserted into the positioning hole.

[0018] In one possible implementation, the tool provided in the present application has at least two pads disposed on the tool rod near the plug-in portion, the pads are evenly spaced along the circumference of the tool rod, the pads are slidably disposed along the length direction of the tool rod, and the pads are configured to be inserted into the gap between the plug-in portion and the plug-in slot.

[0019] The present application provides a tool, which comprises a tool head and a tool rod, wherein the tool head comprises a body, a reaming portion and a drilling portion, wherein the reaming portion is arranged at one end of the body, and the drilling portion is arranged at an end of the reaming portion away from the body, and the reaming portion comprises at least two reaming bodies arranged in a stepped manner, wherein the diameter of the blade of each reaming body increases successively from the drilling portion to the body, and the diameter of the blade in the drilling portion is smaller than the diameter of the smallest blade in the reaming portion; the tool rod is connected to the end of the body away from the drilling portion, and the tool rod has a spiral arrangement along its length direction. Chip groove, when drilling the main oil channel on the vermicular iron body, first install the tool rod on the driving device, then make the drilling part in the cutter head face the vermicular iron body, start the driving device, drive the tool rod and the cutter head to rotate together, the drilling part first drills the vermicular iron body to achieve processing positioning, and then the expanding cutter part abuts against the vermicular iron body to cut the vermicular iron body, and the stepped expanding cutter bodies cut the vermicular iron body in turn, effectively reducing the cutting force on each expanding cutter body blade and protecting the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1 A schematic diagram of the structure of a tool head in a tool provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 Left view of

[0023] Figure 3 A schematic diagram of the structure of the tool bar in the tool provided in the embodiment of the present application;

[0024] Figure 4 for Figure 3 Left view of .

[0025] Description of reference numerals:

[0026] 100-blade head;

[0027] 110-Ontology;

[0028] 111-plug slot;

[0029] 112-positioning shaft;

[0030] 120-expansion knife part;

[0031] 121-expanding cutter body;

[0032] 130-drilling part;

[0033] 131- drilling head;

[0034] 132-drilling rod;

[0035] 200-tool bar;

[0036] 210-plug-in portion;

[0037] 211- positioning hole;

[0038] 220-Spiral chip flute;

[0039] 300-connector;

[0040] 400-shim block.

[0041] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the implementation of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner.

[0044] As mentioned in the background technology: the vehicle's lubrication system includes an oil pan, an oil pump, an oil filter, a main oil channel, a pressure limiting valve, an oil pump suction pipe, a crankcase ventilation device and an oil pressure switch, wherein the main oil channel is used to transport lubricating oil to various lubrication parts.

[0045] There are two existing main oil channel forming methods, one is casting, and the other is drilling from one or both ends of the body using a deep hole drill or a gun drill.

[0046] However, when drilling the main oil channel on the vermicular iron body, the deep hole drill or gun drill is subjected to a high cutting force, which not only easily wears the deep hole drill or gun drill, but also makes the processing accuracy difficult to control.

[0047] In order to solve the technical problems raised above, the present application provides a tool, which is provided with a tool head and a tool rod, wherein the tool head includes a body, a reaming portion and a drilling portion, the reaming portion is arranged at one end of the body, the drilling portion is arranged at an end of the reaming portion away from the body, the reaming portion includes at least two reaming bodies arranged in a stepped manner, the diameter of the blade of each reaming body increases successively from the drilling portion to the body, the diameter of the blade in the drilling portion is smaller than the diameter of the smallest blade in the reaming portion; the tool rod is connected to the end of the body away from the drilling portion, and the tool rod is connected along its length The direction has a spiral chip groove. When drilling the main oil channel on the vermicular iron body, first install the tool rod on the driving device, and then make the drilling part in the cutter head face the vermicular iron body. Start the driving device to drive the tool rod and the cutter head to rotate together. The drilling part first drills the vermicular iron body to achieve processing positioning, and then the expanding cutter part abuts against the vermicular iron body to cut the vermicular iron body. The stepped expanding cutter bodies cut the vermicular iron body in turn, which effectively reduces the cutting force on the blade of each expanding cutter body and protects the blade.

[0048] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0049] refer to Figure 1 , Figure 2 and Figure 3 , an embodiment of the present application discloses a cutting tool, including a cutting head 100 and a cutting rod 200 .

[0050] The cutter head 100 includes a body 110, a reaming portion 120 and a drilling portion 130. The reaming portion 120 is arranged at one end of the body 110, and the drilling portion 130 is arranged at the end of the reaming portion 120 away from the body 110. The reaming portion 120 includes at least two reaming bodies 121 arranged in a stepped manner. The diameter of the blade of each reaming body 121 increases successively from the drilling portion 130 to the body 110, and the diameter of the blade in the drilling portion 130 is smaller than the diameter of the smallest blade in the reaming portion 120.

[0051] The tool bar 200 is connected to one end of the body 110 away from the drilling portion 130 , and the tool bar 200 has a spiral chip removal groove 220 along the length direction thereof.

[0052] Exemplarily, the main body 110 is a cylinder, the reaming portion 120 includes three reaming bodies 121 arranged in a stepped manner, each reaming body 121 is a disc, and the side of the reaming body 121 facing away from the main body 110 is a cutting edge, and the drilling portion 130 is a drilling head 131, and the drilling head 131 has a tip.

[0053] Exemplarily, the blade rod 200 and the body 110 may be fixedly connected (such as welding) or detachably connected.

[0054] Exemplarily, the body 110 and the expanding blade portion 120 have notches that are centrally symmetrically arranged, and the notches are arranged along the length direction of the cutter head 100 to reduce the production cost of the body 110 and the expanding blade portion 120 .

[0055] Exemplarily, two ends of the spiral chip groove 220 respectively penetrate through two ends of the tool rod 200 , so that the chips generated by the tool head 100 when drilling the vermicular iron body can be discharged through the spiral chip groove 220 .

[0056] By adopting the above technical solution, when drilling the main oil channel on the vermicular iron body, the tool rod 200 is first installed on the driving device, and then the drilling part 130 in the cutter head 100 is facing the vermicular iron body. The driving device is started to drive the tool rod 200 and the cutter head 100 to rotate together. The drilling part 130 first drills the vermicular iron body to achieve processing positioning, and then the expanding cutter part 120 abuts against the vermicular iron body to cut the vermicular iron body. The stepped expanding cutter bodies 121 cut the vermicular iron body in turn, which effectively reduces the cutting force on the blade of each expanding cutter body 121 and protects the blade.

[0057] In some embodiments, the difference in blade diameters of adjacent reamer bodies 121 is between 1 mm and 2.5 mm.

[0058] Exemplarily, the difference between the blade diameters of adjacent reamer bodies 121 is one of 1 mm, 1.5 mm and 2 mm.

[0059] By adopting the above technical solution and limiting the diameters of the blades in adjacent reaming blade bodies 121 , it is avoided that the difference in the diameters of the blades in adjacent reaming blade bodies 121 is too large or too small.

[0060] In some embodiments, the blade of the reamer body 121 close to the body 110 transitions to the outer peripheral wall of the body 110 in an arc shape.

[0061] Exemplarily, the radius of the arc transition between the blade of the reamer body 121 close to the body 110 and the outer peripheral wall of the body 110 is 1.2 mm.

[0062] By adopting the above technical solution, when processing the main oil channel from both ends of the vermicular iron body, the blade of the expansion cutter body 121 close to the main body 110 transitions with the outer wall of the main body 110 in an arc, which can effectively alleviate the problem of misalignment of the middle intersection of the main oil channel.

[0063] In some embodiments, the drilling portion 130 includes a drilling head 131 and a drilling rod 132 , the drilling head 131 is connected to the drilling rod 132 , and the drilling rod 132 is connected to the reaming portion 120 .

[0064] By adopting the above technical solution, by setting the drilling head 131 and the drilling rod 132, the drilling head 131 can drill the vermicular iron body, and the setting of the drilling rod 132 can deepen the drilling depth of the drilling head 131, thereby increasing the processing accuracy of the subsequent expansion part 120.

[0065] In some embodiments, an end of the drilling head 131 facing away from the drilling rod 132 is configured as a tip.

[0066] Exemplarily, the drilling head 131 includes a cone and four ribs, the four ribs are evenly spaced on the cone surface, and the sides of the four ribs facing away from the cone are cutting edges.

[0067] By adopting the above technical solution, the drilling head 131 can also locate the processing position of the vermicular iron body, thereby improving the processing accuracy.

[0068] In some embodiments, the diameter of the cutting edge of the drilling head 131 is between one third and one half of the diameter of the workpiece to be machined.

[0069] Exemplarily, the diameter of the cutting edge of the drilling head 131 is one third of the diameter of the workpiece to be machined.

[0070] By adopting the above technical solution and limiting the blade diameter of the drilling head 131, not only can the processing position of the workpiece to be processed be located, but also part of the processing material can be drilled away, so that the processing allowance of the expansion part 120 is reduced, thereby reducing the cutting force on the blade of the expansion part 120, thereby protecting the blade of the expansion part 120.

[0071] In some embodiments, the length of the drilling rod 132 is 1-1.5 times the diameter of the cutting edge of the drilling head 131 .

[0072] Exemplarily, the length of the drilling rod 132 is the same as the diameter of the cutting edge of the drilling head 131 .

[0073] By adopting the above technical solution and limiting the length of the drilling rod 132 , it is prevented that the drilling rod 132 is too long or too short, thereby preventing the drilling of the drilling part 130 from being affected.

[0074] In some embodiments, the tool further includes a connecting piece 300 .

[0075] One end of the knife rod 200 has an inserting portion 210, and the end of the body 110 away from the expanding knife portion 120 has an inserting groove 111, the inserting portion 210 is inserted into the inserting groove 111, and the connecting member 300 is configured to connect the body 110 and the inserting portion 210 to connect the knife rod 200 to the body 110.

[0076] Exemplarily, the plug-in portion 210 is a plug-in block, which is integrally formed with the knife rod 200 , and a diameter of the plug-in block is smaller than a diameter of the knife rod 200 .

[0077] Exemplarily, the plug-in slot 111 is a cylindrical slot, and the cylindrical slot matches the plug-in portion 210 .

[0078] Exemplarily, the connecting member 300 is a screw, which penetrates the conductor and abuts against the plug-in portion 210 .

[0079] By adopting the above technical solution, when the knife rod 200 needs to be connected to the knife head 100, it is only necessary to insert the plug-in portion 210 on the knife rod 200 into the plug-in slot 111 on the main body 110, and then use the connecting piece 300 to connect the main body 110 and the plug-in portion 210; when the knife rod 200 and the knife head 100 need to be disassembled, it is only necessary to disassemble the connecting piece 300, and then move the plug-in portion 210 of the knife rod 200 away from the plug-in slot 111 of the main body 110, which is convenient for the staff to install and disassemble the knife rod 200 and the knife head 100, thereby facilitating the subsequent replacement of the knife head 100.

[0080] refer to Figure 1 , Figure 3 and Figure 4 In some embodiments, the body 110 is provided with a positioning shaft 112 in the plug-in slot 111 , and the plug-in portion 210 has a positioning hole 211 , and the positioning shaft 112 is inserted into the positioning hole 211 .

[0081] Exemplarily, the positioning shaft 112 is a positioning rod, which may be a round rod or an angular rod (eg, a square rod).

[0082] Exemplarily, the axis of the positioning shaft 112 is arranged in a colinear relationship with the axis of the body 110 , or the axis of the positioning shaft 112 is arranged in a non-colinear relationship with the axis of the body 110 .

[0083] By adopting the above technical solution, by setting the positioning shaft 112 and the positioning hole 211, the positions of the plug-in part 210 and the plug-in slot 111 can be positioned, so that it is convenient for the staff to insert the plug-in part 210 into the plug-in slot 111 in an accurate orientation, thereby facilitating the staff to connect the tool rod 200 and the tool head 100.

[0084] In some embodiments, at least two pads 400 are provided at positions of the knife rod 200 near the plug-in portion 210. The pads 400 are evenly spaced along the circumference of the knife rod 200. The pads 400 are slidably arranged along the length direction of the knife rod 200. The pads 400 are configured to be inserted into the gap between the plug-in portion 210 and the plug-in slot 111.

[0085] After the plug-in portion 210 is inserted into the plug-in slot 111 , a certain gap is formed between the plug-in portion 210 and the plug-in slot 111 .

[0086] Exemplarily, a surface of the cushion block 400 facing away from the knife rod 200 is an inclined surface. When the cushion block 400 is moved, a portion of the cushion block 400 can be inserted into the gap between the plug-in portion 210 and the plug-in groove 111 .

[0087] Exemplarily, four cushion blocks 400 are provided, and the four cushion blocks 400 are evenly spaced around the circumference of the arbor 200 .

[0088] By adopting the above technical solution, by setting a cushion block 400, the tool rod 200 is connected to the tool head 100, and when the gap between the plug-in portion 210 and the plug-in slot 111 is too large, the cushion block 400 can be moved so that the cushion block 400 is inserted into the gap between the plug-in portion 210 and the plug-in slot 111, thereby ensuring the stability of the connection between the plug-in portion 210 and the plug-in slot 111, and further ensuring the stability of the tool rod 200 and the tool head 100 after connection.

[0089] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0090] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0091] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0092] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0093] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cutting tool, characterized in that: Including a cutter head and a cutter bar; The cutter head comprises a body, a reaming portion and a drilling portion, wherein the reaming portion is arranged at one end of the body, and the drilling portion is arranged at one end of the reaming portion away from the body, and the reaming portion comprises at least two reaming bodies arranged in a stepped manner, wherein the diameter of the blade of each reaming body increases successively from the drilling portion to the body, and the diameter of the blade in the drilling portion is smaller than the diameter of the smallest blade in the reaming portion; The tool rod is connected to one end of the body away from the drilling portion, and the tool rod has a spiral chip removal groove along its length direction.

2. The tool according to claim 1, characterized in that The difference in blade diameters of adjacent reamer bodies is between 1 mm and 2.5 mm.

3. The tool according to claim 1, characterized in that The blade of the reamer body close to the body transitions to the outer peripheral wall of the body in an arc.

4. The tool according to claim 1, characterized in that The drilling part comprises a drilling head and a drilling rod, wherein the drilling head is connected to the drilling rod, and the drilling rod is connected to the expanding part.

5. The tool according to claim 4, characterized in that One end of the drilling head facing away from the drilling rod is arranged as a tip.

6. The tool according to claim 4, characterized in that The diameter of the cutting edge of the drilling head is between one third and one half of the diameter of the workpiece to be processed.

7. The tool according to claim 4, characterized in that The length of the drilling rod is 1-1.5 times the diameter of the drilling head blade.

8. The tool according to any one of claims 1 to 7, characterized in that Also includes connectors; One end of the knife rod has an inserting portion, and the end of the body away from the expanding knife portion has an inserting groove, the inserting portion is inserted into the inserting groove, and the connecting piece is configured to connect the body and the inserting portion to connect the knife rod to the body.

9. The tool according to claim 8, characterized in that The main body is provided with a positioning shaft in the plug-in slot, the plug-in portion is provided with a positioning hole, and the positioning shaft is inserted into the positioning hole.

10. The tool according to claim 8, characterized in that The knife rod is provided with at least two pads near the plug-in portion, each of the pads is evenly spaced along the circumference of the knife rod, and the pads are slidably arranged along the length direction of the knife rod. The pads are configured to be inserted into the gap between the plug-in portion and the plug-in slot.

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