Efficient four-spiral twist drill based on automobile crankshaft machining

Abstract

The utility model belongs to the technical field of twist drills, particularly relates to an efficient four-spiral twist drill based on automobile crankshaft machining, and solves the problems that in the prior art, after a drill body is used for a long time, the corner of the outer edge of a drill bit is prone to abrasion, and due to the fact that the drill body is of an integrated structure with a first cutting edge and a second cutting edge at one end, the drill bit is not prone to abrasion. According to the scheme, the twist drill comprises a twist drill handle, a twist drill body is installed on the upper portion of the twist drill handle in a threaded mode, a first installation groove is further formed in the connecting position of the twist drill handle and the twist drill body, the first installation groove is formed in the upper portion of the twist drill handle, and a guide groove is formed in the bottom end of the first installation groove. According to the twist drill, the twist drill is divided into the twist drill handle and the twist drill body, and the twist drill handle and the twist drill body are connected in a threaded installation mode, so that when the corner of the outer edge of the drill bit is abraded, only the abraded twist drill body needs to be replaced regularly, and the good working state of the whole twist drill can be kept.

Description

Technical Field

[0001] The utility model relates to a high-efficiency quadruple helical twist drill for machining automobile crankshafts, in particular to a high-efficiency quadruple helical twist drill based on machining automobile crankshafts, and belongs to the technical field of twist drills. Background Art

[0002] The crankshaft is the most important component in the engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work. During the processing of automobile crankshafts, twist drills are needed to open holes in them.

[0003] The rake angle values ​​of various points on the main cutting edge of the existing twist drill are very different inside and outside. The tool may vibrate during the processing, and the vibration will cause the cutting amount of the circumferential edge of the end mill to be uneven, and the cutting expansion amount will increase compared to the original value, which will cause the outer edge corner of the drill to be easily worn. This wear will not only affect the drilling efficiency, but also reduce the quality of the processed surface.

[0004] A twist drill with a publication number of CN219234060U comprises a drill body, a first cutting edge and a second cutting edge at the other end of the drill body. The twist drill is characterized in that it can effectively increase the smoothness of chip removal and prevent the cutting edge from being damaged.

[0005] In the above technical solution, the chip groove one is connected with the cutting edge one, and the chip groove two is connected with the cutting edge two, which can effectively increase the smoothness of chip removal and prevent the cutting edge from being damaged. However, after long-term use, the drill body will easily cause wear at the corners of the outer edge of the drill bit. Since the drill body and the cutting edge one and the cutting edge two at one end are an integrated structure, the user's cost loss will increase during replacement. For this reason, we provide a high-efficiency four-helix twist drill based on automobile crankshaft processing. Utility Model Content

[0006] The utility model aims to solve the problem that the outer edge corners of the drill bit are easily worn after the drill body is used for a long time, and since the drill body and the cutting edge 1 and the cutting edge 2 at one end are an integrated structure, the cost loss of the user will increase when replacing them. Therefore, a high-efficiency four-helix twist drill based on automobile crankshaft processing is provided.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: an efficient four-helix twist drill based on automobile crankshaft processing, comprising a twist drill shank, a twist drill body is threadedly installed on the upper part of the twist drill shank, a first mounting groove is also provided at the connection between the twist drill shank and the twist drill body, and the first mounting groove is provided in the upper inner part of the twist drill shank;

[0008] A guide groove is provided at the bottom end of the first installation groove, a spring stop block is fixedly connected to the upper surface of the guide groove, and a first spring is movably installed above the spring stop block.

[0009] As a further solution of the utility model: a drill center axis is fixedly connected to the inner center of the twist drill body, and a first drill blade, a second drill blade, a third drill blade and a fourth drill blade are fixedly arranged above the drill center axis.

[0010] As a further solution of the utility model: a first chip removal groove is provided on the lower surface of the first drill blade.

[0011] As a further solution of the utility model: a second chip withdrawal groove is provided below the second drill blade.

[0012] As a further solution of the utility model: a third chip withdrawal groove is provided below the third drill blade.

[0013] As a further solution of the utility model: a fourth chip withdrawal groove is provided below the fourth drill blade.

[0014] As a further solution of the utility model: a first mounting block is fixed at the connection between the twist drill body and the twist drill shank, the first mounting block is fixed to the bottom end of the twist drill body, the bottom end of the first mounting block protrudes and is fixedly connected with a guide block, and a spring mounting groove is opened inside the guide block.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model divides the twist drill into two parts, namely, the twist drill shank and the twist drill body, and connects them by threaded installation, so that when the corner of the outer edge of the drill bit is worn, only the twist drill body needs to be replaced. By regularly replacing the worn twist drill body, the whole twist drill can be kept in good working condition.

[0017] 2. The utility model fixes a drill center axis at the center of the twist drill body, and fixes a first drill blade, a second drill blade, a third drill blade and a fourth drill blade thereon. This multi-blade design enables the twist drill to perform multi-point cutting simultaneously during the processing, greatly improving the cutting efficiency and processing speed.

[0018] 3. The utility model fixes the first mounting block at the connection between the twist drill body and the twist drill shank, and protrudes a connecting guide block at the bottom end thereof, thereby ensuring the stability and accuracy of the twist drill body during installation. The spring mounting groove inside the guide block provides space for the installation of the spring, further enhancing the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the twist drill shank and the twist drill body of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first mounting block, the guide block and the first mounting groove of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the first mounting block and the first mounting groove of the utility model;

[0022] Figure 4 The utility model is a structural schematic diagram of the installation of the twist drill shank and the twist drill body.

[0023] In the figure: 1, twist drill shank; 2, twist drill body; 3, drill center axis; 4, first drill blade; 5, second drill blade; 6, third drill blade; 7, fourth drill blade; 8, first mounting block; 9, guide block; 10, first mounting groove; 11, guide groove; 12, spring stop block; 13, spring mounting groove; 14, first spring; 15, first chip groove; 16, fourth chip groove; 17, third chip groove; 18, second chip groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0025] like Figures 1 to 4 As shown, a high-efficiency four-helix twist drill based on automobile crankshaft processing includes a twist drill shank 1, and a twist drill body 2 is threadedly installed on the upper part of the twist drill shank 1. The twist drill is divided into two parts, the twist drill shank 1 and the twist drill body 2, and the two parts are connected by threaded installation. When wear occurs at the corner of the outer edge of the drill bit, only the twist drill body 2 needs to be replaced. Only the worn twist drill body 2 needs to be replaced regularly to keep the whole twist drill in good working condition. A first installation groove 10 is also provided at the connection between the twist drill shank 1 and the twist drill body 2. The first installation groove 10 is provided at A guide groove 11 is provided at the bottom end of the first mounting groove 10 on the upper inner part of the twist drill shank 1, a spring stopper 12 is fixedly connected to the upper surface of the guide groove 11, a first spring 14 is movably installed above the spring stopper 12, and a first mounting groove 10 is provided at the connection between the twist drill shank 1 and the twist drill body 2, which works together with the spring stopper 12 fixedly connected above the guide groove 11 and the movably installed first spring 14 to ensure that the twist drill body 2 can be firmly and reliably fixed on the twist drill shank 1 after installation, is not easy to loosen, and improves the stability of processing. Embodiment 2

[0026] In addition to all the technical features of the first embodiment, the present embodiment further includes: a drill center axis 3 is fixedly connected to the inner center of the twist drill body 2, a first drill blade 4, a second drill blade 5, a third drill blade 6 and a fourth drill blade 7 are fixedly arranged above the drill center axis 3, a first chip groove 15 is provided on the lower surface of the first drill blade 4, a first chip groove 18 is provided below the second drill blade 5, a third chip groove 17 is provided below the third drill blade 6, and a fourth chip groove 16 is provided below the fourth drill blade 7. By fixing the drill center axis 3 at the inner center of the twist drill body 2 and fixing the first drill blade 4, the second drill blade 5, the third drill blade 6 and the fourth drill blade 7 thereon, this multi-blade design enables the twist drill to perform multi-point cutting at the same time during the processing, greatly improving the cutting efficiency and processing speed. A chip groove is designed below each drill blade, i.e., a first chip groove 18 is provided below the second drill blade 5, a third chip groove 17 is provided below the third drill blade 6, and a fourth chip groove 16 is provided below the fourth drill blade 7. The chip groove 15, the second chip groove 18, the third chip groove 17 and the fourth chip groove 16 can discharge the waste generated in the cutting process in time and prevent the waste from accumulating in the cutting area, thereby reducing the cutting resistance and optimizing the cutting process. A first mounting block 8 is also fixed at the connection between the twist drill body 2 and the twist drill shank 1. The first mounting block 8 is fixed to the bottom end of the twist drill body 2. The bottom end of the first mounting block 8 protrudes and is fixedly connected with a guide block 9. A spring mounting groove 13 is opened inside the guide block 9. By fixing the first mounting block 8 at the connection between the twist drill body 2 and the twist drill shank 1 and protruding and connecting the guide block 9 at its bottom end, the stability and accuracy of the twist drill body 2 during installation are ensured. The spring mounting groove 13 inside the guide block 9 provides space for the installation of the spring, further enhancing the stability of the connection. In addition, the twist drill body 2 and the twist drill shank 1 can be replaced separately.

[0027] Working principle: First, the twist drill shank 1 and the twist drill body 2 are connected together by threaded installation, so that when wear occurs at the corner of the outer edge of the drill bit, only the twist drill body 2 needs to be replaced, thereby maintaining the good working condition of the entire twist drill. At the same time, a first installation groove 10 is provided at the connection between the twist drill body 2 and the twist drill shank 1. The spring stop block 12 above the guide groove 11 and the movably installed first spring 14 work together to ensure that the twist drill body 2 can be firmly and reliably fixed on the twist drill shank 1 after installation, and is not easy to loosen, thereby improving the stability of processing.

[0028] Secondly, four drill blades are provided on the drill center axis 3 fixedly connected to the inner center of the twist drill body 2, namely the first drill blade 4, the second drill blade 5, the third drill blade 6 and the fourth drill blade 7. This multi-blade design enables the twist drill to perform multi-point cutting simultaneously during the processing, greatly improving the cutting efficiency and processing speed. A chip withdrawal groove is provided under each drill blade, namely the first chip withdrawal groove 15, the second chip withdrawal groove 18, the third chip withdrawal groove 17 and the fourth chip withdrawal groove 16. These chip withdrawal grooves can discharge the waste generated during the cutting process in time to prevent the waste from accumulating in the cutting area, thereby reducing the cutting resistance and optimizing the cutting process.

[0029] Then, when working, the twist drill drives the four drill blades to cut simultaneously through the rotation of the drill center axis 3. The waste generated during the cutting process is discharged in time through each chip removal groove to keep the cutting area clean. Since the twist drill body 2 and the twist drill shank 1 adopt a split design, when the drill blade or the twist drill body 2 is worn, only the twist drill body 2 needs to be replaced, and there is no need to replace the entire twist drill, thereby reducing the cost of use. When the first mounting block 8 and the guide block 9 are installed in the first mounting groove 10, the first spring 14 can be moved into the spring mounting groove 13, which effectively improves the stability between the twist drill shank 1 and the twist drill body 2, making it convenient for users to use.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-efficiency four-helix twist drill for automobile crankshaft processing, comprising a twist drill shank (1), characterized in that: The twist drill body (2) is threadedly mounted on the upper portion of the twist drill shank (1), and a first mounting groove (10) is provided at the connection between the twist drill shank (1) and the twist drill body (2), wherein the first mounting groove (10) is provided in the upper interior of the twist drill shank (1); A guide groove (11) is provided at the bottom end of the first installation groove (10), a spring stopper (12) is fixedly connected to the upper surface of the guide groove (11), and a first spring (14) is movably mounted above the spring stopper (12).

2. The high-efficiency quadruple twist drill for automobile crankshaft processing according to claim 1, characterized in that: A drill center axis (3) is fixedly connected to the inner center of the twist drill body (2), and a first drill blade (4), a second drill blade (5), a third drill blade (6) and a fourth drill blade (7) are fixedly arranged above the drill center axis (3).

3. The high-efficiency quadruple twist drill for automobile crankshaft processing according to claim 2, characterized in that: A first chip removal groove (15) is provided on the lower surface of the first drill blade (4).

4. The high-efficiency quadruple twist drill for automobile crankshaft processing according to claim 2, characterized in that: A second chip removal groove (18) is provided below the second drilling blade (5).

5. The high-efficiency quadruple twist drill for automobile crankshaft processing according to claim 2, characterized in that: A third chip removal groove (17) is provided below the third drilling blade (6).

6. The high-efficiency quadruple twist drill for automobile crankshaft processing according to claim 2, characterized in that: A fourth chip removal groove (16) is provided below the fourth drilling blade (7).

7. The high-efficiency quadruple twist drill for automobile crankshaft processing according to claim 1, characterized in that: A first mounting block (8) is also fixed at the connection between the twist drill body (2) and the twist drill shank (1); the first mounting block (8) is fixed to the bottom end of the twist drill body (2); a guide block (9) is protruding and fixedly connected to the bottom end of the first mounting block (8); a spring mounting groove (13) is provided inside the guide block (9).

Images