Split type crankshaft key groove machining tool

Abstract

The utility model discloses a split type crankshaft keyway processing cutter which comprises a cutter body and a cutter handle, the cutter body comprises a cutter bar and a cutter head, one end of the cutter bar is provided with a connecting table and a transmission head, the transmission head is located on the face, back to the cutter bar, of the connecting table, the cutter head is connected to the other end of the cutter bar, one end of the cutter handle is provided with a connecting face, and a transmission hole is formed in the center of the connecting face. The connecting table is detachably connected to the connecting face, and the transmission head is in transmission connection to the transmission hole. According to the cutter, the detachable cutter body and the detachable cutter handle are arranged, when the cutter body is damaged in the using process, the cutter body can be detached and replaced independently, the cutter handle does not need to be scrapped together, the cutter handle is recycled, material waste is greatly reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a split crankshaft keyway machining tool. Background Art

[0002] The automobile crankshaft is an important component of the automobile engine. It converts reciprocating motion into rotational motion through the connecting rod to drive the power system of the automobile. Usually, in the production process of the automobile crankshaft, it is necessary to process the keyway on the automobile crankshaft so that it can be used to connect the flywheel, camshaft or other rotating parts to ensure the normal operation of the engine.

[0003] Generally speaking, the processing of automobile crankshaft keyways requires the use of special processing tools. Such tools are usually composed of a tool body and a tool handle. In the prior art, the tool body and the tool handle are designed in one piece. During the processing, if the tool body breaks, the entire tool can no longer be used, so the tool body and the tool handle are scrapped together, causing great waste. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a split crankshaft keyway processing tool, comprising: a tool body and a tool handle, the tool body comprising a tool rod and a tool disc, one end of the tool rod having a connecting platform and a transmission head, the transmission head being located on a side of the connecting platform facing away from the tool rod, the tool disc being connected to the other end of the tool rod, one end of the tool handle having a connecting surface, a transmission hole being provided at the center of the connecting surface, the connecting platform being detachably connected to the connecting surface, and the transmission head being transmission-connected to the transmission hole.

[0005] According to one embodiment of the utility model, the tool rod includes a rod body, the rod body includes a mounting section and a limiting section, the outer diameter of the limiting section is larger than the outer diameter of the mounting section, the connecting platform is located at one end of the limiting section facing away from the mounting section, the cutter disc is mounted on the mounting section of the rod body and is transmission-connected to the rod body, the tool rod also includes a fixing member, the fixing member is detachably mounted on one end of the mounting section, one end of the fixing member abuts against one side of the cutter disc, so that the other side of the cutter disc abuts against one end of the limiting section.

[0006] According to one embodiment of the utility model, a connecting through hole is provided at the center of the cutter disc, the inner diameter of the connecting through hole is larger than the outer diameter of the mounting section and smaller than the outer diameter of the limiting section, the inner wall of the connecting through hole is provided with a first key groove, one end of the first key groove is connected to one side of the cutter disc and faces the limiting section, the cutter rod also includes a transmission key, a second key groove is provided on the rod body, both ends of the second key groove are respectively opened in the mounting section, the connecting through hole is sleeved in the mounting section, and the transmission key is respectively located in the first key groove and the second key groove.

[0007] According to one embodiment of the utility model, the fixing piece is cylindrical, with fixing holes provided at both ends along its axis, the inner wall of the fixing hole is provided with an internal thread, the outer wall of one end of the installation section facing away from the limiting section is provided with an external thread, and the fixing piece is threadedly connected to one end of the installation section.

[0008] According to one embodiment of the utility model, the connecting platform is provided with a plurality of first connecting holes, which are arranged along the knife rod ring on the connecting platform and pass through the connecting platform, and the connecting surface is provided with a plurality of second connecting holes corresponding to the first connecting hole ring, and the knife rod is detachably connected to the second connecting hole through the first connecting holes.

[0009] According to one embodiment of the utility model, the transmission head has first transmission planes on both sides, and the inner wall of the transmission hole has second transmission planes on both sides. When the transmission head is installed in the transmission hole, the first transmission plane fits the second transmission plane.

[0010] According to one embodiment of the utility model, the cutter disc includes a base body and a plurality of blades, a connecting through hole is opened at the center of the base body, and the plurality of blades are arranged on the outer wall of the base body along the circumferential direction.

[0011] According to an embodiment of the present invention, the plurality of blades are all welded to the outer wall of the base.

[0012] The beneficial effect of the utility model is that by providing a detachably connected knife body and knife handle, when the knife body is damaged during use, the knife body can be disassembled and replaced alone without scrapping the knife handle, thereby achieving the reuse of the knife handle, greatly reducing material waste and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 It is a schematic diagram of the exploded structure of the split crankshaft keyway machining tool in the embodiment;

[0015] Figure 2 Schematic diagram of the knife bar structure in the embodiment;

[0016] Figure 3 It is a schematic diagram of the structure of the cutter head in the embodiment;

[0017] Figure 4 Schematic diagram of the knife handle structure in the embodiment. DETAILED DESCRIPTION

[0018] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0019] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0020] See also Figure 1 , Figure 2 and Figure 4 , Figure 1 This is a schematic diagram of the exploded structure of the split crankshaft keyway machining tool in the embodiment. Figure 2 It is a schematic diagram of the knife bar structure in the embodiment, Figure 4 The schematic diagram of the tool handle structure in the embodiment. In this example, a split crankshaft keyway processing tool comprises a tool body 1 and a tool handle 2, wherein the tool body 1 comprises a tool bar 11 and a tool disc 12, one end of the tool bar 11 comprises a connecting platform 112 and a transmission head 113, the transmission head 113 is located on the side of the connecting platform 112 facing away from the tool bar 11, the tool disc 12 is connected to the other end of the tool bar 11, one end of the tool handle 2 comprises a connecting surface 21, the center of the connecting surface 21 comprises a transmission hole 211, the connecting platform 112 is detachably connected to the connecting surface 21, so that the tool bar 11 can be detachably connected to the tool handle 2, and the transmission head 122 The transmission is connected in the transmission hole 211, so that the tool rod 11 is transmission-connected to the tool handle 2. When in use, the tool handle 2 is installed on the tool installation position of the milling machine, and the tool handle 2 drives the tool rod 11 to rotate, so that the cutter disc 12 rotates with the tool rod 11 to perform milling work. When the cutter disc 12 is cracked or the tool rod 11 is broken, the tool rod 11 can be removed from the tool handle 2 to replace a new tool rod 11. In this way, the tool handle 2 can be effectively reused to avoid waste caused by the tool handle 2 being scrapped due to damage to the tool rod 11 or the cutter disc 12, thereby effectively saving materials.

[0021] Review Figure 1-Figure 2 and Figure 4Furthermore, the knife bar 11 includes a rod body 111, the rod body 111 has a mounting section 1111 and a limiting section 1112, the outer diameter of the limiting section 1112 is larger than the outer diameter of the mounting section 1111, the connecting platform 112 is located at one end of the limiting section 1112 facing away from the mounting section 1111, the knife disc 12 is sleeved and mounted on the mounting section 1111 of the rod body 111, and is transmission-connected to the rod body 111, the knife bar 11 also includes a fixing member 114, and the fixing member 114 is detachably mounted on one end of the mounting section 1111 At this time, one end of the fixing member 114 abuts against one side of the cutter disc 12, so that the other side of the cutter disc 12 abuts against one end of the limiting section 1112. In this way, the cutter disc 12 can be fixed to the mounting section 1111. When the cutter disc 12 is damaged by cracking, wear, etc., the fixing member 114 can be removed, and the cutter disc 12 can be taken out and replaced, that is, there is no need to replace the knife rod 11. In this way, the knife rod 11 can be effectively reused to avoid the waste caused by the scrapping of the knife rod 11 due to the damage of the cutter disc 12, thereby further saving materials.

[0022] Specifically, a connecting through hole 1211 is provided at the center of the cutter disc 12, the inner diameter of the connecting through hole 1211 is larger than the outer diameter of the mounting section 1111 and smaller than the outer diameter of the limiting section 1112, the inner wall of the connecting through hole 1211 is provided with a first key groove 12111, one end of the first key groove 12111 is connected to one side of the cutter disc 12 and faces the limiting section 1112, the cutter rod 11 also includes a transmission key 115, a second key groove 1113 is provided on the rod body 111, both ends of the second key groove 1113 are respectively opened in the mounting section 1111, the connecting through hole 1211 is sleeved in the mounting section 1111, and the transmission key 115 is respectively located in the first key groove 12111 and the second key groove 1113. During installation, the transmission key 115 is installed in the second key groove 1113. At this time, the connecting through hole 1211 of the cutter disc 12 can be installed on the outer wall of the installation section 1111. As the cutter disc 12 approaches the limiting section 1112, one end of the transmission key 115 enters the first key groove 12111 from one end of the first key groove 12111. After the cutter disc 12 is installed to the installation section 1111, the fixing member 114 is installed at one end of the installation section 1111 and abuts against the cutter disc 12 so that the other side of the cutter disc 12 abuts against one end of the limiting section 1112 to maintain the stability of the cutter disc 12 and prevent the cutter disc 12 from falling off. At the same time, the stability of the transmission of the transmission key 115 is ensured. In this way, when the tool rod 11 rotates, the tool disc 12 is driven to rotate along with the tool rod 11 through the transmission key 115, so that the cutter disc 11 performs milling work.

[0023] Furthermore, the fixing member 114 is cylindrical, and a fixing hole 1141 is provided along the central axis of the fixing member 114 and passes through both ends thereof. The inner wall of the fixing hole 1141 has an internal thread, and the outer wall of one end of the mounting section 1111 facing away from the limiting section 1112 is correspondingly provided with an external thread. The fixing member 114 is threadedly connected to one end of the mounting section 1111, thereby realizing a detachable connection of the fixing member 114.

[0024] Furthermore, the connecting platform 112 is provided with a plurality of first connecting holes 1121, and the plurality of first connecting holes 1121 are arranged around the connecting platform 112 along the arbor 11 and penetrate the connecting platform 112, and the connecting surface 21 is provided with a plurality of second connecting holes 212 along the arbor 11 corresponding to the first connecting holes 1121, and the first connecting hole 1121 through the arbor 11 is detachably connected to the second connecting hole 212, wherein the second connecting hole 212 is a threaded hole, and in specific implementation, the first connecting hole 1121 and the second connecting hole 121 can be connected by bolts, so that the connecting platform 112 can be detachably connected to the connecting surface 21, and then the arbor 11 can be detachably connected to the shank 2.

[0025] Furthermore, the transmission head 113 has a first transmission plane 1131 on both sides, and the transmission hole 211 has a second transmission plane 2111 on both sides of the inner wall. When the transmission head 113 is installed in the transmission hole 211, the first transmission plane 1131 is attached to the second transmission plane 2111. In this way, when the handle 2 rotates, the transmission hole 211 drives the transmission head 113 to rotate, so that the tool rod 11 rotates with the handle 2.

[0026] Specifically, a transmission groove 22 is further provided at one end of the tool handle 2 facing away from the tool rod 11 . The transmission groove 22 is arranged along the radial direction of the tool handle 2 . When the tool handle 2 is installed on a milling machine, the milling machine can drive the tool handle 2 to rotate through the transmission groove 22 .

[0027] In addition, a plurality of fixing holes 23 are provided on the side wall of the tool handle 2. The plurality of fixing holes 23 are arranged opposite to each other along the peripheral wall of the tool handle 2. Every two opposite fixing holes 23 are located on the same diameter of the tool handle 2 and are all arranged through the side wall of the tool handle 2. When the tool handle 2 is installed on a milling machine, the tool handle 2 can be fixed to the milling machine through the fixing holes 23.

[0028] See also Figure 3 , review Figure 1 , Figure 3 Schematic diagram of the cutter disc structure in the embodiment. Further, the cutter disc 12 includes a base 121 and a plurality of blades 122, a connecting through hole 1211 is opened at the center of the base 121, and a plurality of blades 122 are arranged circumferentially on the outer wall of the base 121. In specific implementation, the plurality of blades 122 can be welded to the outer wall of the base 121 by welding. When the blade 122 is damaged such as cracking, a single blade 122 can be re-welded to replace the single blade 122. In this way, the base 121 can be reused, avoiding the base 121 from being scrapped due to damage to the blade 122, and further saving materials.

[0029] In this example, the base 121 is made of 45# tempered steel, and the blade 122 is made of cemented carbide.

[0030] In summary, in this example, the blade body and the blade handle are arranged in a detachable connection mode, so that when the blade body is damaged, only the blade body needs to be replaced, and the blade handle can be reused; by setting the blade disc and the blade rod in a detachable connection mode, when the blade disc is damaged, only the blade disc needs to be replaced, and the blade handle and the blade rod can be reused further; by welding the blade to the base of the blade disc, when the blade is damaged, the blade can be replaced, and the base, blade rod and blade handle can be reused further, thus effectively avoiding material waste and greatly saving material costs.

[0031] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A split crankshaft keyway machining tool, It is characterized in that include A knife body (1) and a knife handle (2), wherein the knife body (1) comprises a knife rod (11) and a knife disc (12), wherein one end of the knife rod (11) is provided with a connecting platform (112) and a transmission head (113), wherein the transmission head (113) is located on a side of the connecting platform (112) facing away from the knife rod (11), wherein the knife disc (12) is connected to the other end of the knife rod (11), wherein one end of the knife handle (2) is provided with a connecting surface (21), wherein a transmission hole (211) is provided at the center of the connecting surface (21), wherein the connecting platform (112) is detachably connected to the connecting surface (21), and wherein the transmission head (113) is transmission-connected to the transmission hole (211).

2. The split crankshaft keyway machining tool according to claim 1, It is characterized in that The knife rod (11) comprises a rod body (111), the rod body (111) comprises a mounting section (1111) and a limiting section (1112), the outer diameter of the limiting section (1112) is larger than the outer diameter of the mounting section (1111), the connecting platform (112) is located at one end of the limiting section (1112) facing away from the mounting section (1111), the knife disc (12) is sleeved and mounted on the mounting section (1111) of the rod body (111), and is transmission-connected to the rod body (111), the knife rod (11) further comprises a fixing member (114), the fixing member (114) is detachably mounted on one end of the mounting section (1111), one end of the fixing member (114) abuts against one side of the knife disc (12), so that the other side of the knife disc (12) abuts against one end of the limiting section (1112).

3. The split crankshaft keyway machining tool according to claim 2, It is characterized in that The blade disc (12) has a connecting through hole (1211) at the center, the inner diameter of the connecting through hole (1211) is larger than the outer diameter of the mounting section (1111) and smaller than the outer diameter of the limiting section (1112), the inner wall of the connecting through hole (1211) has a first key groove (12111), one end of the first key groove (12111) is connected to one side of the blade disc (12) and faces the limiting section (1112), the blade rod (11) also includes a transmission key (115), a second key groove (1113) is provided on the rod body (111), two ends of the second key groove (1113) are respectively opened in the mounting section (1111), the connecting through hole (1211) is sleeved in the mounting section (1111), and the transmission key (115) is respectively located in the first key groove (12111) and the second key groove (1113).

4. The split crankshaft keyway machining tool according to claim 2, It is characterized in that The fixing member (114) is cylindrical, and fixing holes (1141) are provided at both ends along its axis, an inner wall of the fixing hole (1141) is provided with an internal thread, an outer wall of one end of the mounting section (1111) facing away from the limiting section (1112) is provided with an external thread, and the fixing member (114) is threadedly connected to one end of the mounting section (1111).

5. The split crankshaft keyway machining tool according to claim 1, It is characterized in that The connecting platform (112) is provided with a plurality of first connecting holes (1121), and the plurality of first connecting holes (1121) are arranged around the connecting platform (112) along the knife rod (11) and penetrate the connecting platform (112); the connecting surface (21) is arranged around a plurality of second connecting holes (212) corresponding to the first connecting holes (1121), and the knife rod (11) is detachably connected to the second connecting hole (212) through the first connecting holes (1121).

6. The split crankshaft keyway machining tool according to claim 1, It is characterized in that The transmission head (113) has first transmission planes (1131) on both sides, and the inner wall of the transmission hole (211) has second transmission planes (2111) on both sides. When the transmission head (113) is installed in the transmission hole (211), the first transmission plane (1131) is in contact with the second transmission plane (2111).

7. The split crankshaft keyway machining tool according to claim 3, It is characterized in that The blade disc (12) comprises a base (121) and a plurality of blades (122); the connecting through hole (1211) is opened at the center of the base (121); and the plurality of blades (122) are arranged on the outer wall of the base (121) along the circumferential direction.

8. The split crankshaft keyway machining tool according to claim 7, It is characterized in that The plurality of blades (122) are all welded to the outer wall of the base (121).

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