Rear turning blank diameter thread rolling production line

Abstract

The utility model belongs to the field of fastener machining, and particularly relates to a rear turning blank diameter thread rolling production line. Comprising a reducing machine tool, a diameter detection device, a thread rolling system, a first three-axis truss mechanical arm used for transferring a workpiece from the reducing machine tool to the diameter detection device, and a transferring device used for transferring the workpiece from the diameter detection device to the thread rolling system, a workpiece is clamped to a reducing machine tool through a previous process of the first three-axis truss mechanical arm or on a material frame, after the workpiece is reduced, the workpiece is transferred to a diameter detection device through the first three-axis truss mechanical arm, whether reducing is qualified or not is checked, qualified workpieces are transferred to a thread rolling system through a transfer device, thread rolling machining is conducted, and unqualified workpieces are removed, so that the machining efficiency is improved. The diameter of the workpiece can be detected in advance on the production line, the workpiece with unqualified diameter shrinkage is prevented from entering the subsequent process, waste is reduced, the workpiece does not need to be transferred out of the production line due to the fact that the diameter detection device is integrated into the production line, and production efficiency is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of fastener processing, and particularly relates to a rear-turning blank diameter rolling thread production line. Background Art

[0002] In the manufacturing process of bolts, in the existing production line, generally, the bolt blank needs to go through the processes of end chamfering, diameter reduction, rolling thread and quality inspection. The quality inspection includes detecting parameters such as thread diameter, pitch, and thread angle. The thread diameter is determined during the diameter reduction process. If the product fails the quality inspection due to an unqualified thread diameter, there will be a waste problem in the rolling thread processing step in the diameter reduction process. According to the existing technology, if it is necessary to detect whether the diameter reduction is qualified before the rolling thread processing, the workpiece needs to be transferred from the production line to a special device for quality inspection and then taken back to the production line after completion, which will greatly reduce the production efficiency of the production line. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a rear-turning blank diameter rolling thread production line, which can avoid workpieces with unqualified diameter reduction from entering the rolling thread process in advance and ensure the overall production efficiency.

[0004] The utility model provides a rear-turning blank diameter rolling thread production line, including:

[0005] A diameter reduction machine tool, a diameter detection device and a rolling thread system arranged in sequence;

[0006] A three-axis truss manipulator one for transferring the workpiece from the diameter reduction machine tool to the diameter detection device; and

[0007] A transfer device for transferring the workpiece from the diameter detection device to the rolling thread system.

[0008] Optionally, the number of the three-axis truss manipulator ones is two, and they are distributed side by side, and the diameter detection device is located between the ends of the two three-axis truss manipulator ones.

[0009] Optionally, a plurality of diameter reduction machine tools are linearly arranged below the two three-axis truss manipulator ones respectively.

[0010] Optionally, the transfer device includes a three-axis truss manipulator two arranged above the diameter detection device, a two-axis truss manipulator arranged between the three-axis truss manipulator two and the rolling thread system, and a three-axis truss manipulator three arranged above the rolling thread system. The truss manipulator two is used to remove the workpiece from the diameter detection device, the two-axis truss manipulator is used to receive the workpiece on the truss manipulator two, and the three-axis truss manipulator is used to transfer the workpiece on the two-axis truss manipulator to the rolling thread system and remove it after rolling the thread.

[0011] Optionally, the diameter detection device is horizontally arranged in the production line direction, and a material receiving box is arranged on one side of the diameter detection device for collecting unqualified workpieces.

[0012] Optionally, the diameter detection device includes a bracket, a linear guide rail arranged on the bracket, two linear drive frames arranged on the linear guide rail, and a diameter detection unit arranged between the two linear drive frames. The linear drive frames are used to carry the moving workpiece to the diameter detection unit.

[0013] Optionally, the diameter detection unit includes two linear drive members I symmetrically arranged on both sides of the linear guide rail and two contact type diameter measuring sensors respectively arranged on the two linear drive members I.

[0014] Optionally, the linear drive frame includes a linear drive member II, a base slidably connected to the linear guide rail, and a magnetic chuck fixedly arranged on the base. The workpiece is placed on the magnetic chuck.

[0015] Optionally, a connecting frame is arranged between the base and the magnetic chuck to adapt the heights of workpieces of different specifications to the diameter detection unit.

[0016] Optionally, the post-turning blank diameter rolling production line further includes a stepped loading machine, a chamfering machine, and a three-axis truss manipulator IV arranged between the stepped loading machine and the chamfering machine. The three-axis truss manipulator I receives the chamfered workpiece from the three-axis truss manipulator IV.

[0017] The beneficial effects of the present utility model are as follows: the three-axis truss manipulator I clamps the workpiece from the previous process or the material rack to the necking machine tool. After the workpiece is necked, the three-axis truss manipulator I transfers the workpiece to the diameter detection device to check whether the necking is qualified. The qualified ones are transferred to the rolling system through the transfer device for rolling processing, and the unqualified ones are removed. Thus, the diameter of the workpiece is detected in advance on the production line, which not only avoids unqualified necked workpieces from entering the subsequent processes and reduces waste, but also ensures the production efficiency because the diameter detection device is integrated into the production line and the workpiece does not need to be transferred out of the production line. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the post-turning blank diameter rolling production line of the present utility model;

[0019] Figure 2 is Figure 1 the enlarged view of area A in

[0020] Figure 3 a schematic structural diagram of the diameter detection device of the present utility model.

[0021] In the figure: 1.1, workpiece; 10, diameter-reducing machine tool; 20, diameter detection device; 201, support; 202, linear guide rail; 203, linear drive frame; 2031, second linear drive part; 2032, base; 2033, magnetic chuck; 204, diameter detection unit; 2041, first linear drive part; 2042, contact-type diameter measuring sensor; 2043, U-shaped frame; 205, connecting frame; 30, thread rolling system; 301, thread rolling machine; 302, conveyor; 303, five-axis truss manipulator; 40, first three-axis truss manipulator; 50, transfer device; 501, second three-axis truss manipulator; 502, two-axis truss manipulator; 503, third three-axis truss manipulator; 60, stepped loader; 70, chamfering machine; 80, fourth three-axis truss manipulator. Detailed implementation mode

[0022] As Figures 1-3 Shown in the figure, a post-turning blank diameter thread rolling production line provided by the present utility model includes: a diameter-reducing machine tool 10, a diameter detection device 20, and a thread rolling system 30 arranged in sequence, a first three-axis truss manipulator 40 for transferring the workpiece 1.1 from the diameter-reducing machine tool 10 to the diameter detection device 20, and a transfer device 50 for transferring the workpiece 1.1 from the diameter detection device 20 to the thread rolling system 30.

[0023] Compared with the prior art, in the post-turning blank diameter thread rolling production line provided by the present utility model, the first three-axis truss manipulator 40 clamps the workpiece 1.1 from the previous process or the rack to the diameter-reducing machine tool 10. After the diameter of the workpiece 1.1 is reduced, the first three-axis truss manipulator 40 transfers the workpiece 1.1 to the diameter detection device 20 to check whether the diameter reduction is qualified. The qualified ones are transferred to the thread rolling system 30 through the transfer device 50 for thread rolling processing, and the unqualified ones are removed. Thus, the diameter of the workpiece 1.1 is detected in advance on the production line, which not only avoids the unqualified workpiece 1.1 with reduced diameter from entering the subsequent process and reduces waste, but also ensures the production efficiency because the diameter detection device 20 is integrated into the production line and the workpiece 1.1 does not need to be transferred out of the production line.

[0024] In one embodiment, usually the time for shrinkage processing is longer than the time for diameter detection. If only one set of the first three-axis truss manipulator 40 and the diameter-reducing machine tool 10 are arranged on the production line, the diameter detection device 20 will have a long idle time. Therefore, to further improve the production efficiency, the number of the first three-axis truss manipulator 40 is two and they are arranged side by side, and the diameter detection device 20 is located between the ends of the two first three-axis truss manipulators 40. Specifically, the two first three-axis truss manipulators 40 respectively clamp the workpiece 1.1 from the previous process or the rack to the corresponding diameter-reducing machine tool 10 and then transfer it to the diameter detection device 20 in sequence. In this way, the idle time of the diameter detection device 20 is reduced and the production efficiency is improved.

[0025] Furthermore, a plurality of necking machines 10 are linearly arranged below the two three-axis truss manipulators 40 respectively. In this way, according to the necking time and the diameter detection time, through comprehensive calculation, the appropriate number of necking machines 10 is selected, thereby further reducing the idle time of the diameter detection device 20 and then improving the production efficiency.

[0026] In one embodiment, the transfer device 50 includes a three-axis truss manipulator two 501 arranged above the diameter detection device 20, a two-axis truss manipulator 502 arranged between the three-axis truss manipulator two 501 and the rolling thread system 30, and a three-axis truss manipulator three 503 arranged above the rolling thread system 30. The three-axis truss manipulator two is used to remove the workpiece 1.1 from the diameter detection device 20. The two-axis truss manipulator 502 is used to receive the workpiece 1.1 on the three-axis truss manipulator two. The three-axis truss manipulator is used to transfer the workpiece 1.1 on the two-axis truss manipulator 502 to the rolling thread system 30 and remove it after rolling the thread. In this way, through the cooperation of the three-axis truss manipulator two 501, the two-axis truss manipulator 502 and the three-axis truss manipulator three 503, the residence time of the workpiece 1.1 in the intermediate link is reduced, which is beneficial to improving the production efficiency. And through the running speeds of the three, the production speeds of the front and back processes can be adjusted to make the production more reasonable. In addition, the two-axis truss manipulator 502 located in the middle of the three plays a buffering role, and there is no need to set a material rack between the diameter detection device 20 and the rolling thread system 30, and the length of the production line is also shortened.

[0027] In one embodiment, please refer to Figure 2 and Figure 3 , the diameter detection device 20 is horizontally arranged in the production line direction, and a receiving box is arranged on one side of the diameter detection device 20 for collecting unqualified workpieces 1.1. Specifically, the diameter detection device 20 includes a bracket 201, a linear guide rail 202 arranged on the bracket 201, two linear driving frames 203 arranged on the linear guide rail 202, and a diameter detection unit 204 arranged between the two linear driving frames 203. The linear driving frame 203 is used to carry and move the workpiece 1.1 to the diameter detection unit 204. In this way, the diameter detection device 20 has two initial positions for placing the workpiece 1.1 at both ends, and can receive the workpiece 1.1 from the two three-axis truss manipulators 40 distributed side by side. The two linear driving frames 203 alternately carry and move the workpiece 1.1 to the diameter detection unit 204, thereby reducing the idle time of the diameter detection unit 204 and further improving the production efficiency.

[0028] In one embodiment, the diameter detection unit 204 includes two linear driving members 2041 symmetrically arranged on both sides of the linear guide 202 and two contact type diameter measuring sensors 2042 respectively arranged on the two linear driving members 2041. Specifically, the linear driving member 2041 is a cylinder or an electric cylinder. When the linear driving frame 203 moves the workpiece 1.1 along the linear track to the diameter detection unit 204, then the two linear driving members 2041 are started simultaneously to attach the two contact type diameter measuring sensors 2042 to both sides of the workpiece 1.1 to detect the diameter of one part of the workpiece 1.1. Then, the two linear driving members 2041 drive the two contact type diameter measuring sensors 2042 to disengage from the workpiece 1.1. The linear driving frame 203 moves forward a certain distance and stops. Then, the two linear driving members 2041 repeat the above steps. In this way, the diameter of multiple parts of the workpiece 1.1 can be detected, so as to ensure the reliability of the detection and further prevent unqualified workpieces 1.1 from entering the subsequent processes.

[0029] In one embodiment, to facilitate the symmetrical arrangement of the two linear driving members 2041 on both sides of the linear guide 202, the two linear driving members 2041 are installed on a U-shaped frame 2043, and the U-shaped frame 2043 is fixedly connected to the linear guide 202 in a spanning manner.

[0030] In one embodiment, the linear driving frame 203 includes a linear driving member 2031, a base 2032 slidably connected to the linear guide 202, and a magnetic adsorption fixture 2033 fixedly arranged on the base 2032, and the workpiece 1.1 is placed on the magnetic adsorption fixture 2033. Specifically, after the three-axis truss manipulator 40 places the workpiece 1.1 on the magnetic adsorption fixture 2033, the linear driving member 2031 drives the base 2032 and the magnetic adsorption fixture 2033 to move towards the diameter detection unit 204, and then resets after detection. In this way, the normal operation of the diameter detection device 20 is ensured.

[0031] In this embodiment, the linear driving member 2031 includes a rack arranged parallel to the linear guide 202, a motor fixedly arranged on the base 2032, and a gear arranged on the output shaft of the motor, and the gear meshes with the rack. The rotational movement of the motor is converted into a linear movement through the cooperation of the rack and the gear, so as to drive the base 2032 and the magnetic adsorption fixture 2033 to move along the linear guide 202; in other embodiments, the linear driving member 2031 is a cylinder or an electric cylinder.

[0032] In one embodiment, a connecting frame 205 is arranged between the base 2032 and the magnetic adsorption fixture 2033 to adapt the heights of workpieces 1.1 with different specifications to the diameter detection unit 204. Specifically, by replacing the connecting frames 205 with different heights, the heights of workpieces 1.1 with different specifications are adapted to the diameter detection unit 204.

[0033] In one embodiment, the rear blank diameter thread rolling production line further includes a stepped loader 60, a chamfering machine 70, and a three-axis truss manipulator four 80 disposed between the stepped loader 60 and the chamfering machine 70. The three-axis truss manipulator one 40 receives the chamfered workpiece 1.1 from the three-axis truss manipulator four 80. Specifically, the stepped loader 60 sequentially moves the messy workpieces 1.1 to the designated positions, then the three-axis truss manipulator four 80 transfers the workpiece 1.1 to the chamfering machine 70 for chamfering, and then the three-axis truss manipulator one 40 performs the foregoing steps, thereby further improving the automation level of the production line and improving the production efficiency.

[0034] In this embodiment, the thread rolling system 30 includes a thread rolling machine 301, a conveyor 302, and a three-axis truss manipulator five 303. The three-axis truss manipulator three 503 moves the workpiece 1.1 to the processing position of the thread rolling machine 301. After thread rolling, another three-axis truss manipulator three 503 moves the thread-rolled workpiece 1.1 to the conveyor 302, and at the rear section of the conveyor 302, the three-axis truss manipulator five 303 transfers it to the storage rack for storage.

[0035] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present application is limited to these examples; under the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0036] One or more embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application shall be included within the protection scope of the present application.

Claims

1. A back-turning billet diameter thread rolling production line, characterized in that: include: A diameter reducing machine tool (10), a diameter detection device (20) and a thread rolling system (30) are arranged in sequence; A three-axis truss robot (40) for transferring a workpiece (1.1) from a diameter reducing machine (10) to a diameter detection device (20); and A transfer device (50) for transferring a workpiece (1.1) from a diameter measuring device (20) to a thread rolling system (30).

2. The back-turning diameter thread rolling production line according to claim 1 is characterized in that: The number of the three-axis truss manipulators (40) is two and they are arranged side by side, and the diameter detection device (20) is located between the ends of the two three-axis truss manipulators (40).

3. The back-turning billet diameter thread rolling production line according to claim 2 is characterized in that: A plurality of reducing machine tools (10) are respectively arranged in a straight line below the two three-axis truss manipulators (40).

4. The back-turning billet diameter thread rolling production line according to claim 1 is characterized in that: The transfer device (50) comprises a three-axis truss manipulator (501) arranged above the diameter detection device (20), a two-axis truss manipulator (502) arranged between the three-axis truss manipulator (501) and the thread rolling system (30), and a three-axis truss manipulator (503) arranged above the thread rolling system (30); the two-axis truss manipulator (502) is used to move the workpiece (1.1) out of the diameter detection device (20); the two-axis truss manipulator (502) is used to receive the workpiece (1.1) on the two-axis truss manipulator; and the three-axis truss manipulator is used to transfer the workpiece (1.1) on the two-axis truss manipulator (502) to the thread rolling system (30) and to move it out after thread rolling.

5. The back-turning billet diameter thread rolling production line according to claim 1 is characterized in that: The diameter detection device (20) is arranged transversely in the direction of the production line, and a receiving box is arranged on one side of the diameter detection device (20) for collecting unqualified workpieces (1.1).

6. The back-turning diameter thread rolling production line according to claim 1 is characterized in that: The diameter detection device (20) comprises a bracket (201), a linear guide rail (202) arranged on the bracket (201), two linear drive frames (203) arranged on the linear guide rail (202), and a diameter detection unit (204) arranged between the two linear drive frames (203); the linear drive frame (203) is used to carry a movable workpiece (1.1) to the diameter detection unit (204).

7. The back-turning diameter thread rolling production line according to claim 6 is characterized in that: The diameter detection unit (204) comprises two linear drive members (2041) symmetrically arranged on both sides of the linear guide rail (202) and two contact-type diameter measuring sensors (2042) respectively arranged on the two linear drive members (2041).

8. The back-turning billet diameter thread rolling production line according to claim 6 is characterized in that: The linear drive frame (203) comprises a second linear drive component (2031), a base (2032) slidably connected to the linear guide rail (202), and a magnetic suction clamp (2033) fixedly arranged on the base (2032), and the workpiece (1.1) is placed on the magnetic suction clamp (2033).

9. The back-turning billet diameter thread rolling production line according to claim 8, characterized in that: The base (2032) and the magnetic clamp (2033) are provided with a connecting frame (205) so that workpieces (1.1) of different specifications can be adapted to the height and diameter detection unit (204).

10. The back-turning diameter thread rolling production line according to any one of claims 1 to 9, characterized in that: It also includes a stepped material loader (60), a chamfering machine (70) and a three-axis truss manipulator four (80) arranged between the stepped material loader (60) and the chamfering machine (70), wherein the three-axis truss manipulator one (40) receives the chamfered workpiece (1.1) from the three-axis truss manipulator four (80).

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