Tool for machining eccentric shaft workpiece by numerical control lathe

Abstract

The utility model discloses a tool for processing an eccentric shaft workpiece on a numerical control lathe, which is used for processing the eccentric shaft workpiece twice in sequence on a first chuck and a second chuck of the numerical control lathe, and comprises soft claws which are respectively arranged on the first chuck and the second chuck, and the bottom walls of the soft claws are connected with the first chuck and the second chuck in a sliding manner. And the first tool body is arranged on the soft claw of the first chuck, the end of the first tool body is detachably connected with the soft claw, and the gear part of the eccentric shaft workpiece is matched with the interior of the first tool body. The second tool body is arranged on the soft claw of the second chuck and opposite to the first tool body in position, and the inner wall of the second tool body is matched with the gear part of the eccentric shaft workpiece. The locking assemblies are arranged on the first tool body and the second tool body and detachably connected with the first tool body and the second tool body. The soft claw, the first tool body, the second tool body and the locking assembly are used in cooperation, the eccentricity of the eccentric shaft workpiece and the angular relation between the eccentricity and the tooth shape are guaranteed, the machining precision is guaranteed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric shaft workpiece tooling, in particular to a tooling for machining eccentric shaft workpieces on a numerically controlled lathe. Background Art

[0002] An eccentric shaft workpiece is a workpiece in which the outer circles of the parts or the outer circles and the axis of the inner hole are parallel but not overlapped and there is a certain distance between them.

[0003] The processing of eccentric shaft workpieces is usually carried out on lathes or CNC lathes. Usually, when processing eccentric shaft workpieces on CNC lathes, it is found that the eccentric part of the eccentric shaft workpiece cannot be aligned by using chucks and ordinary tooling, and it is difficult to coincide the axis of the eccentric part with the axis of the lathe spindle. The processing work cannot be completed according to the processing requirements, and it is difficult to ensure the processing accuracy and processing stability of the eccentric shaft workpiece, and the production efficiency is low.

[0004] Therefore, a special tooling is required to mount the eccentric shaft workpiece on the CNC lathe. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a tooling for machining an eccentric shaft workpiece on a CNC lathe, wherein the eccentric shaft workpiece is locked on the CNC lathe through soft claws, a first tooling body, a second tooling body and a locking assembly.

[0006] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0007] A tool for machining an eccentric shaft workpiece on a CNC lathe, used for machining the eccentric shaft workpiece twice on a first chuck and a second chuck of the CNC lathe, comprising:

[0008] The soft claws are respectively arranged on the first chuck and the second chuck, and the bottom walls of the soft claws are slidably connected with the first chuck and the second chuck.

[0009] The first tooling body is arranged on the soft jaws of the first chuck, and the end portion thereof is detachably connected with the soft jaws, and the gear portion of the eccentric shaft workpiece is adapted to the interior of the first tooling body.

[0010] The second tooling body is arranged on the soft claws of the second chuck and is opposite to the first tooling body. The inner wall of the second tooling body is matched with the gear part of the eccentric shaft workpiece.

[0011] The locking components are arranged on the first tool body and the second tool body, and are detachably connected to the first tool body and the second tool body, and are used to locate and lock the eccentric position of the eccentric shaft workpiece on the first tool body or the second tool body.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The first tool body and the second tool body use their own structures and the eccentric shaft workpiece, and the locking assembly first locates the position of the eccentric shaft workpiece on the first tool body or the second tool body, then locks it, and then fixes the first tool body or the second tool body through the soft claw. Through the coordinated use of the soft claw, the first tool body, the second tool body and the locking assembly, the eccentricity of the eccentric shaft workpiece and the angular relationship between the eccentricity and the tooth shape are effectively guaranteed, thereby ensuring the processing accuracy and improving the work efficiency.

[0014] Further preferably, the first tool body or the second tool body comprises:

[0015] The inner cavity is arranged at the position of the first tooling body and the second tooling body close to the soft claws, and is matched and connected with the gear part of the eccentric shaft workpiece and the inner wall of the inner cavity.

[0016] The outer cavity is arranged at the position of the first tooling body and the second tooling body away from the soft claws and is communicated with the inner cavity. The outer wall of the eccentric shaft workpiece is matched and connected with the cavity wall of the outer cavity.

[0017] By adopting the above technical solution, after the gear part cooperates with the inner cavity and the outer wall cooperates with the inner wall of the outer cavity, the eccentric shaft workpiece can be installed in the first tooling body or the second tooling body as required.

[0018] Further preferably, the locking assembly comprises:

[0019] The positioning piece is arranged in the first tool body and the second tool body, and its end extends into the inner cavity and cooperates with the gear part, so as to find out the axis of the gear part that coincides with the main shaft of the CNC lathe.

[0020] The locking piece is arranged in the first tool body and the second tool body, and its end extends into the outer cavity and abuts against the outer wall of the eccentric shaft workpiece, and is used to lock the position of the eccentric shaft workpiece in the outer cavity by rotating in the outer cavity.

[0021] By adopting the above technical solution, the installation position of the eccentric shaft workpiece can be ensured by the positioning member, and the eccentric shaft is locked and fixed in the first tooling body or the second tooling body by the locking member, thereby achieving precise positioning and fixation of the eccentric shaft workpiece and ensuring processing accuracy.

[0022] More preferably, the positioning member is a positioning screw, which is threadedly connected to the first tooling body. The locking member is a locking screw, which is threadedly connected to the first tooling body or the second tooling body.

[0023] By adopting the above technical solution, the eccentric shaft workpiece can be installed more firmly through screw connection by means of the positioning screw and the locking screw.

[0024] Further optimization is that the lower cross-section of the positioning piece is trapezoidal.

[0025] By adopting the above technical solution, the positioning member cooperates with the gear part of the eccentric shaft workpiece through the lower part to prevent the eccentric axis of the eccentric shaft workpiece from shifting, thereby improving the processing accuracy.

[0026] Further optimization is that the lower side wall of the positioning member abuts against the inner wall of the gear part.

[0027] By adopting the above technical solution, the positioning member and the tooth groove part in the gear part can be well matched, thereby preventing the gear part from being greatly offset during the processing.

[0028] Further optimization is that the bottom surface of the locking piece is a plane.

[0029] By adopting the above technical solution, the locking member abuts against the side wall of the eccentric shaft workpiece in a surface-to-surface contact manner, ensuring that the locking member and the side wall of the eccentric shaft workpiece have a larger contact area, thereby further locking the eccentric shaft workpiece.

[0030] Further optimization is that the inner diameter of the soft claw is equal to the outer diameter of the first tool body or the second tool body.

[0031] By adopting the above technical solution, it is ensured that the jumping between the machined soft claws and the first tooling body and the second tooling body is within the allowable range.

[0032] Further optimization is that the side walls of the first tool body and the second tool body are both provided with planes, and the positioning member and the locking member are both located in the eccentric shaft workpiece after passing through the planes.

[0033] By adopting the above technical solution, when installing the eccentric shaft workpiece, it is easier to screw the positioning piece and the locking piece into the first tooling body and the second tooling body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of this embodiment.

[0035] Figure 2 Schematic diagram of the structure of the soft claw in this embodiment.

[0036] Figure 3 It is a schematic diagram of the structure of the first tooling body in this embodiment.

[0037] Figure 4 It is a schematic diagram of the connection between the eccentric shaft workpiece and the first tooling body in this embodiment.

[0038] Figure 5 Schematic diagram of the structure of the gear part in this embodiment.

[0039] Figure 6 It is a schematic diagram of the structure of the positioning member and the locking member in this embodiment.

[0040] Figure 7It is a schematic diagram of the connection structure between the positioning member and the first tooling body in this embodiment.

[0041] Figure markings: 1-first chuck; 11-main jaw; 2-soft jaw; 3-first tooling body; 31-inner cavity; 32-outer cavity; 4-second tooling body; 5-positioning piece; 6-locking piece; 7-eccentric shaft workpiece; 71-first eccentric part; 72-second eccentric part; 73-gear part; 8-second chuck. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-Figure 7 The utility model is further introduced in detail.

[0043] A tooling for machining an eccentric shaft workpiece 7 on a CNC lathe, such as Figure 1 As shown, it is used to process the eccentric shaft workpiece 7 twice on the first chuck 1 and the second chuck 8 of the CNC lathe, comprising:

[0044] The soft jaw 2 is respectively arranged on the first chuck 1 and the second chuck 8, and its bottom wall is slidably connected with the first chuck 1 and the second chuck 8. Specifically, the soft jaw 2 is slidably connected with the main jaw 11, and the main jaw 11 on the first chuck 1 or the second chuck 8 moves by sliding.

[0045] The first tooling body 3 is disposed on the soft jaws 2 of the first chuck 1 , and its end is detachably connected to the soft jaws 2 . The gear portion 73 of the eccentric shaft workpiece 7 is adapted to the interior of the first tooling body 3 .

[0046] The second tooling body 4 is disposed on the soft jaws 2 of the second chuck 8 , opposite to the first tooling body 3 , and its inner wall is adapted to the gear portion 73 of the eccentric shaft workpiece 7 .

[0047] The soft jaw 2 moves on the main jaw 11 to clamp the first tooling body 3 and the second tooling body 4 for installation.

[0048] The locking components are arranged on the first tooling body 3 and the second tooling body 4, and are detachably connected to the first tooling body 3 and the second tooling body 4, and are used to locate and lock the eccentric shaft workpiece 7 at the eccentric position on the first tooling body 3 or the second tooling body 4.

[0049] The first tool body 3 and the second tool body 4 use their own structures and the eccentric shaft workpiece 7, and the locking assembly first locates the position of the eccentric shaft workpiece 7 on the first tool body 3 or the second tool body 4, and then locks it, and then fixes the first tool body 3 or the second tool body 4 through the soft claw 2. Through the coordinated use of the soft claw 2, the first tool body 3, the second tool body 4 and the locking assembly, the eccentricity of the eccentric shaft workpiece 7 and the angular relationship between the eccentricity and the tooth shape are effectively guaranteed, thereby ensuring the processing accuracy and improving the work efficiency.

[0050] Specifically, Figure 1 and Figure 3 As shown, the first tooling body 3 or the second tooling body 4 in this embodiment includes:

[0051] The inner cavity 31 is provided at a position of the first tooling body 3 and the second tooling body 4 close to the soft claw 2 , and is matched and connected with the gear portion 73 of the eccentric shaft workpiece 7 and the inner wall of the inner cavity 31 .

[0052] The outer cavity 32 is provided at a position of the first tooling body 3 and the second tooling body 4 away from the soft claw 2 and is communicated with the inner cavity 31 . The outer wall of the eccentric shaft workpiece 7 is cooperatively connected with the cavity wall of the outer cavity 32 .

[0053] After the gear portion 73 is matched with the inner cavity 31 and the outer wall is matched with the inner wall of the outer cavity 32 , the eccentric shaft workpiece 7 is installed in the first tooling body 3 or the second tooling body 4 as required.

[0054] Specifically, Figure 1 , Figure 4 as well as Figure 7 As shown, the locking assembly in this embodiment includes:

[0055] The positioning member 5 is arranged in the first tooling body 3 and the second tooling body 4, and its end portion extends into the inner cavity 31 and cooperates with the gear part 73 to find out the axis of the gear part 73 that coincides with the main shaft of the CNC lathe.

[0056] The locking member 6 is arranged in the first tooling body 3 and the second tooling body 4, and its end extends into the outer cavity 32 and abuts against the outer wall of the eccentric shaft workpiece 7, and is used to lock the position of the eccentric shaft workpiece 7 in the outer cavity 32 by rotating in the outer cavity 32.

[0057] The installation position of the eccentric shaft workpiece 7 can be ensured by the positioning member 5, and the eccentric shaft is locked and fixed in the first tooling body 3 or the second tooling body 4 by the locking member 6, so as to achieve accurate positioning and fixation of the eccentric shaft workpiece 7 and ensure processing accuracy.

[0058] Specifically, Figure 4 and Figure 5 As shown, the positioning member 5 in this embodiment is a positioning screw, which is screwed to the first tooling body 3. The locking member 6 is a locking screw, which is screwed to the first tooling body 3 or the second tooling body 4, and the eccentric shaft workpiece 7 is better and more firmly installed by screwing the positioning screw and the locking screw.

[0059] Specifically, Figure 5 and Figure 6As shown, the lower cross-section of the positioning member 5 in this embodiment is trapezoidal, and the positioning member 5 cooperates with the tooth groove in the gear portion 73 of the eccentric shaft workpiece 7 through the lower portion to prevent the eccentric axis of the eccentric shaft workpiece 7 from shifting, thereby improving the processing accuracy.

[0060] Specifically, Figure 4 and Figure 6 As shown, the lower side wall of the positioning member 5 in this embodiment abuts against the inner wall of the gear portion 73, so that the positioning member 5 and the tooth groove portion in the gear portion 73 are well matched, preventing the gear portion 73 from being significantly offset during the processing.

[0061] Specifically, Figure 5 and Figure 6 As shown, the bottom surface of the locking member 6 in this embodiment is a plane, which abuts against the side wall of the eccentric shaft workpiece 7 in a surface-to-surface contact manner, ensuring that the locking member 6 has a larger contact area with the side wall of the eccentric shaft workpiece 7, thereby further locking the eccentric shaft workpiece 7.

[0062] Specifically, Figure 2 and Figure 3 As shown, the inner diameter of the soft claw 2 in this embodiment is equal to the outer diameter of the first tooling body 3 or the second tooling body 4, ensuring that the jump between the machined soft claw 2 and the first tooling body 3 or the second tooling body 4 is within the allowable range.

[0063] Specifically, Figure 5 and Figure 6 As shown, in this embodiment, the side walls of the first tooling body 3 and the second tooling body 4 are both provided with planes, and the positioning member 5 and the locking member 6 are both located in the eccentric shaft workpiece 7 after passing through the planes. When installing the eccentric shaft workpiece 7, it is easier to screw the positioning member 5 and the locking member 6 into the first tooling body and the second tooling body 4.

[0064] Please combine Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 7 Taking the installation of the first tooling body 3 on the first chuck 1 and the installation of the second tooling body 4 on the second chuck 8 as an example, the installation and processing process of the eccentric shaft workpiece 7 is described as follows:

[0065] The eccentric shaft workpiece 7 is loaded into the first tooling body 3, and then the positioning member 5 is screwed into the first tooling body 3. The eccentric shaft workpiece 7 is rotated to find the position where its axis coincides with the main shaft of the CNC lathe, and the positioning screw is further screwed into the gear part 73 and the corresponding tooth groove for positioning. The locking screw is screwed into the first tooling body 3 and abutted against the side wall of the eccentric shaft workpiece 7 for locking, and finally the first eccentric part 71 on the eccentric shaft workpiece 7 is processed.

[0066] After the first eccentric portion 71 is processed, the positioning member 5 and the locking member 6 are screwed out, the eccentric shaft workpiece 7 is disassembled, and then installed in the second tooling body 4 in the same way, and positioned and locked, and then the second eccentric portion 72 on the eccentric shaft workpiece 7 is processed.

[0067] In summary, the first tooling body 3, the second tooling body 4 and the eccentric shaft workpiece 7 are first positioned on the first tooling body 3 or the second tooling body 4 by the locking assembly through their own structures, and then locked, and then the first tooling body 3 or the second tooling body 4 is fixed by the soft claw 2. Through the coordinated use of the soft claw 2, the first tooling body 3, the second tooling body 4 and the locking assembly, the eccentricity of the eccentric shaft workpiece 7, the angular relationship between the eccentricity and the tooth shape are effectively guaranteed, thereby ensuring the processing accuracy and improving the work efficiency. The structure also has the following characteristics: strong pertinence, low production cost, suitable for all eccentric shaft workpiece 7 products, wide application range, simple and convenient to operate.

[0068] This specific embodiment is merely an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the protection scope of the utility model, it is protected by the patent law.

Claims

1. A tool for machining an eccentric shaft workpiece on a CNC lathe, used for machining an eccentric shaft workpiece (7) twice on a first chuck (1) and a second chuck (8) of the CNC lathe, characterized in that: include: The soft claws (2) are respectively arranged on the first chuck (1) and the second chuck (8), and the bottom walls thereof are slidably connected to the first chuck (1) and the second chuck (8); A first tooling body (3) is arranged on the soft claw (2) of the first chuck (1), and its end is detachably connected to the soft claw (2), and the gear part (73) of the eccentric shaft workpiece (7) is adapted to the inside of the first tooling body (3); A second tooling body (4) is arranged on the soft claw (2) of the second chuck (8) and is opposite to the first tooling body (3), and its inner wall is adapted to the gear part (73) of the eccentric shaft workpiece (7); The locking components are arranged on the first tooling body (3) and the second tooling body (4), and are detachably connected to the first tooling body (3) and the second tooling body (4), and are used to locate and lock the eccentric position of the eccentric shaft workpiece (7) on the first tooling body (3) or the second tooling body (4).

2. The tooling for machining eccentric shaft workpieces on a CNC lathe according to claim 1, characterized in that: The first tool body (3) or the second tool body (4) comprises: An inner cavity (31) is provided at a portion of the first tooling body (3) and the second tooling body (4) close to the soft claw (2), and is cooperatively connected with the gear portion (73) of the eccentric shaft workpiece (7) and the inner wall of the inner cavity (31); The outer cavity (32) is arranged at a position of the first tooling body (3) and the second tooling body (4) away from the soft claw (2), and is connected to the inner cavity (31); the outer wall of the eccentric shaft workpiece (7) is cooperatively connected with the cavity wall of the outer cavity (32).

3. The tooling for machining eccentric shaft workpieces on a CNC lathe according to claim 2, characterized in that: The locking assembly comprises: A positioning member (5) is arranged in the first tooling body (3) and the second tooling body (4), with its end extending into the inner cavity (31) and cooperating with the gear part (73) to find out the axis of the gear part (73) that coincides with the main shaft of the CNC lathe; A locking member (6) is arranged in the first tooling body (3) and the second tooling body (4), with its end extending into the outer cavity (32) and abutting against the outer wall of the eccentric shaft workpiece (7), and is used for locking the position of the eccentric shaft workpiece (7) in the outer cavity (32) by rotating in the outer cavity (32).

4. The tooling for machining an eccentric shaft workpiece on a CNC lathe according to claim 3, characterized in that: The positioning member (5) is a positioning screw and is threadedly connected to the first tool body (3); the locking member (6) is a locking screw and is threadedly connected to both the first tool body (3) and the second tool body (4).

5. The tooling for machining an eccentric shaft workpiece on a CNC lathe according to claim 3, characterized in that: The lower cross section of the positioning member (5) is trapezoidal.

6. The tooling for machining an eccentric shaft workpiece using a CNC lathe according to claim 5, characterized in that: The side wall of the positioning member (5) abuts against the inner wall of the gear portion (73).

7. The tooling for machining an eccentric shaft workpiece on a CNC lathe according to claim 3, characterized in that: The bottom surface of the locking piece (6) is a plane.

8. The tooling for machining an eccentric shaft workpiece on a CNC lathe according to claim 2, characterized in that: The inner diameter of the soft claw (2) is equal to the outer diameter of the first tooling body (3) or the second tooling body (4).

9. The tooling for machining an eccentric shaft workpiece on a CNC lathe according to claim 3, characterized in that: The side walls of the first tool body (3) and the second tool body (4) are both provided with a plane, and the positioning member (5) and the locking member (6) are both located in the eccentric shaft workpiece (7) after passing through the plane.

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