High-precision dual rotary spindles

Abstract

The present invention relates to a high-precision dual-rotation spindle, characterized in that it includes a dual-rotation spindle body, the dual-rotation spindle body being fixed to a translation plate via a mounting seat, the dual-rotation spindle body being composed of an outer rotating cylinder and an inner rotating shaft, one end of the inner rotating shaft extending into the outer rotating cylinder, the inner rotating shaft extending into the outer rotating cylinder being fitted with a first bearing, the inner rotating shaft being movably connected to the outer rotating cylinder via the first bearing, the end of the outer rotating cylinder connected to the inner rotating shaft being fitted with a first gear, the first gear being connected to a rotation drive mechanism of the outer rotating cylinder fixed to a support plate, the other end of the inner rotating shaft being fitted with a second gear, the first gear being connected to the second gear via a linkage mechanism, and a threaded core head fixture being provided on the end of the outer rotating cylinder away from the second gear. This design has the advantages of simple structure, easy manufacture, and practicality and high efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of thread core head processing, and in particular to a high-precision double-rotation main spindle. Background Art

[0002] A threaded core head is required in the drawing process of copper tubes, and the thread groove on the surface of the threaded core head needs to be processed by a special machine tool. The thread groove is processed by continuously adjusting the position of the core head and the tool during the processing. Nowadays, after processing a thread groove, workers often loosen the threaded core head fixture and manually adjust the threaded core head to rotate it to a certain angle and then re-fix it before continuing processing. This method is not only very troublesome, but also requires workers to have sufficient processing experience. Otherwise, it is easy to cause the processed products to be scrapped. Therefore, in order to improve processing efficiency and reduce unnecessary losses, it is particularly important to design a high-precision double-rotary spindle. Summary of the Invention

[0003] In order to solve the above problems, the present invention has designed a high-precision double-rotating spindle. By pulling the handle, the inner rotating shaft can be rotated independently, so there is no need to disassemble the thread core head, which improves the processing efficiency; and according to actual conditions, the second gear can be re-locked after the second gear rotates a certain number of teeth, thereby completing the adjustment of the thread core head processing position, which improves the processing accuracy and increases practical performance.

[0004] The cam is fixedly mounted on the drive means for rotating the said frame, and the cam is mounted on a link member which is adapted to move the said second end of the said second frame upwards.

[0005] Further: the outer rotating cylinder is composed of a limiting cylinder and a mounting cylinder connected on the left and right sides. One end of the inner rotating shaft passes through the limiting cylinder and is rotatably connected in the mounting cylinder through a first bearing. The first bearing is restricted in the mounting cylinder by the limiting cylinder.

[0006] Furthermore: the outer rotating cylinder is a linkage mechanism including a mounting plate, a pull handle, a guide column, a tension spring and a lock plate. The mounting plate is L-shaped, and one end of the mounting plate is provided with a through hole for the inner rotating shaft to pass through and is fixedly connected to the first gear. The inner rotating shaft passes through the mounting plate along the through hole and is movably connected to it. The other end of the mounting plate is provided with a guide through hole matching the guide column, and one end of the guide column passes through the guide through hole and is connected to the lock plate as a whole. The pull handle is arranged at the other end of the guide column, and a tension spring is arranged between the pull handle and the mounting plate. The lock plate is connected to the second gear under the action of the tension spring.

[0007] Furthermore, the locking plate is arc-shaped, and locking teeth matching the second gear are provided on its inner wall. The locking teeth are meshed with the second gear under the action of a tension spring.

[0008] Furthermore: the mounting seat is composed of an upper seat body and a lower seat body connected up and down, and the lower surface of the upper seat body and the upper surface of the lower seat body are provided with semicircular grooves matching the outer rotating cylinder, and the outer rotating cylinder is rotatably connected between the upper seat body and the lower seat body through a second bearing mounted on its outer wall.

[0009] Furthermore: a slide rail is provided on the support plate, and the translation plate is slidably connected to the slide rail via a slider provided at the bottom, and the translation plate is connected to a position adjustment electric cylinder.

[0010] Furthermore: the outer drum rotation drive mechanism includes a rotation drive motor, a drive shaft and a drive gear. A boss is provided on the support plate on one side of the mounting seat. The rotation drive motor is mounted on the boss and connected to the drive shaft. The drive gear is mounted on the end of the drive shaft away from the rotation drive motor and meshes with the first gear.

[0011] Furthermore, the driving toothed member includes an elongated cylindrical body and a toothed portion provided on the outer wall of the elongated cylindrical body, and the first gear is meshed with the toothed portion on the outer wall of the elongated cylindrical body.

[0012] Furthermore: a guide seat is also provided on the boss, and the drive shaft passes through the guide seat. The drive shaft is rotatably connected to the guide seat through a third bearing fixed on the outer wall.

[0013] After adopting the above structure, the present invention can make the inner shaft rotate independently by pulling the handle, thereby eliminating the need to disassemble the thread core head, thereby improving processing efficiency; and according to actual conditions, the second gear can be re-locked after the second gear rotates a certain number of teeth, thereby completing the adjustment of the thread core head processing position, thereby improving processing accuracy and increasing practical performance; and the present invention also has the advantages of simple structure, easy manufacturing, practicality and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a usage state diagram of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the present invention.

[0017] Figure 3 for Figure 2 A magnified view of the middle panel.

[0018] The figures are marked as follows: 1 is a support plate, 2 is a slide rail, 3 is a boss, 4 is a translation plate, 5 is a slider, 6 is a drive shaft, 7 is a drive gear, 8 is a double-rotation spindle body, 8-1 is a mounting cylinder, 8-2 is a limit cylinder, 8-3 is a first gear, 8-4 is a second gear, 8-5 is an inner rotating shaft, 8-6 is a mounting plate, 8-7 is a pull handle, 8-8 is a guide column, 8-9 is a tension spring, 8-10 is a locking plate, 9 is a threaded core head clamp, 10 is a guide seat, 11 is a rotary drive motor, 12 is a lower seat body, and 13 is an upper seat body. DETAILED DESCRIPTION

[0019] like Figure 1 and Figure 2 A high-precision dual-rotation spindle shown in FIG. 1 includes a dual-rotation spindle body 8, which is fixed to a translation plate 4 via a mounting seat. The dual-rotation spindle body 8 is composed of an outer rotating cylinder and an inner rotating shaft 8-5. One end of the inner rotating shaft 8-5 extends into the outer rotating cylinder. The inner rotating shaft 8-5 extending into the outer rotating cylinder is provided with a first bearing. The inner rotating shaft 8-5 is movably connected to the outer rotating cylinder via the first bearing. A first gear 8-3 is provided on one end of the outer rotating cylinder connected to the inner rotating shaft 8-5. The first gear 8-3 is connected to the outer rotating cylinder rotation drive mechanism fixed to the support plate 1. A second gear 8-4 is fixedly mounted on the other end of the inner rotating shaft 8-5, and the first gear 8-3 is connected to the second gear 8-4 through a linkage mechanism. A threaded core head clamp 9 is provided on the end of the outer rotating cylinder away from the second gear 8-4. The threaded core head clamp 9 extends into the outer rotating cylinder and is detachably connected to the inner rotating shaft 8-5. The threaded core head clamp 9 rotates with the inner rotating shaft 8-5 and is movably connected to the outer rotating cylinder. A slide rail 2 is provided on the support plate 1, and the translation plate 4 is slidably connected to the slide rail 2 through a slider 5 provided at the bottom, and the translation plate 4 is connected to the position adjustment electric cylinder.

[0020] like Figure 2The outer rotating cylinder shown is composed of a limiting cylinder 8-2 and a mounting cylinder 8-1 connected on the left and right. One end of the inner rotating shaft 8-5 passes through the limiting cylinder 8-2 and is rotatably connected to the mounting cylinder 8-1 through a first bearing. The first bearing is limited in the mounting cylinder 8-1 by the limiting cylinder 8-2.

[0021] like Figure 2 and Figure 3 The linkage mechanism shown includes a mounting plate 8-6, a pull handle 8-7, a guide column 8-8, a tension spring 8-9 and a lock plate 8-10. The mounting plate 8-6 is L-shaped, and one end thereof is provided with a through hole for the inner rotating shaft 8-5 to pass through and is fixedly connected to the first gear 8-3. The inner rotating shaft 8-5 passes through the mounting plate 8-6 along the through hole and is movably connected thereto. The other end of the mounting plate 8-6 is provided with a guide through hole matching the guide column 8-8. One end of the guide column 8-8 passes through the guide through hole and is connected to the lock plate 8-10 as a whole. The pull handle 8-7 is arranged at the other end of the guide column 8-8. A tension spring 8-9 is arranged between the pull handle 8-7 and the mounting plate 8-6. The lock plate 8-10 is connected to the second gear 8-4 under the action of the tension spring 8-9. The present invention can rotate the inner shaft 8-5 independently by pulling the handle 8-7, thereby finely rotating the thread core head in the thread core head fixture 9, thereby improving the processing accuracy of the thread core head and increasing practical performance.

[0022] The above-mentioned locking plate 8-10 is arc-shaped, and locking teeth matching the second gear 8-4 are provided on its inner wall. The locking teeth are engaged with the second gear 8-4 under the action of the tension spring 8-9.

[0023] like Figure 1 The mounting seat shown is composed of an upper seat body 13 and a lower seat body 12 connected up and down. The lower surface of the upper seat body 13 and the upper surface of the lower seat body 12 are both provided with semicircular grooves matching the outer rotating cylinder. The outer rotating cylinder is rotatably connected between the upper seat body 13 and the lower seat body 12 through a second bearing mounted on its outer wall.

[0024] like Figure 1The outer drum rotation drive mechanism shown includes a rotation drive motor 11, a drive shaft 6, and a drive gear 7. A boss 3 is provided on the support plate 1 on one side of the mounting seat. The rotation drive motor 11 is mounted on the boss 3 and connected to the drive shaft 6. The drive gear 7 is mounted on the end of the drive shaft 6 away from the rotation drive motor 11 and meshes with the first gear 8-3. The drive gear 7 includes an elongated cylindrical body and a toothed portion provided on the outer wall of the elongated cylindrical body. The first gear 8-3 meshes with the toothed portion on the outer wall of the elongated cylindrical body. The present invention utilizes the design of the elongated cylindrical body and the toothed portion provided on the outer wall of the elongated cylindrical body to continue driving the outer drum to rotate after the translation plate 4 is moved, thereby increasing practical performance.

[0025] like Figure 1 A guide seat 10 is also provided on the boss 3 shown. The drive shaft 6 passes through the guide seat 10. The drive shaft 6 is rotatably connected to the guide seat 10 through a third bearing fixed on the outer wall. The present invention adopts the above to improve the structural stability.

[0026] During processing, the thread core head to be processed is first clamped and fixed by a thread core head fixture, and then the processing tool is brought into contact with the thread core head to be processed, and the rotary drive motor and the position adjustment electric cylinder are started so that the processing tool completes the processing of the first groove on the outer surface of the thread core head during the rotation and advancement of the thread core head. After the first groove is processed, the position adjustment electric cylinder is started in the reverse direction to return the thread core head fixture to its original position with the thread core head, and then the pull handle is pulled to separate the locking plate from the first gear. At this time, the rotation of the inner shaft will not rotate with the outer drum. After adjusting the inner shaft so that the first gear on it rotates a corresponding number of teeth, it is continued to be locked by the locking plate, so that the outer drum continues to rotate with the inner shaft. At this time, the processing tool is facing the initial part of the second groove of the thread core head, and the rotary drive motor and the position adjustment electric cylinder are continued to be started to complete the processing of the second groove, and this process is repeated until the entire thread core head is processed. After adopting the above design, the present invention can accurately control the position of the processed groove on the thread core head by controlling the inner shaft to rotate a certain number of teeth, thereby preventing the production of defective products and increasing practical performance.

[0027] To sum up, the present invention can make the inner shaft rotate independently by pulling the handle, thereby eliminating the need to disassemble the thread core head, thereby improving processing efficiency; and can re-lock the second gear after the second gear rotates a certain number of teeth according to actual conditions, thereby completing the adjustment of the thread core head processing position, thereby improving processing accuracy and increasing practical performance; and the present invention also has the advantages of simple structure, easy manufacturing, practicality and high efficiency.

[0028] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A high-precision dual-rotation spindle, characterized by: The invention comprises a double-rotating main shaft body (8), wherein the double-rotating main shaft body (8) is fixed on the translation plate (4) through a mounting seat, and the double-rotating main shaft body (8) is composed of an outer rotating cylinder and an inner rotating shaft (8-5), one end of the inner rotating shaft (8-5) extends into the outer rotating cylinder, and a first bearing is sleeved on the inner rotating shaft (8-5) extending into the outer rotating cylinder, and the inner rotating shaft (8-5) is movably connected to the outer rotating cylinder through the first bearing, and a first bearing is sleeved on the end of the outer rotating cylinder connected to the inner rotating shaft (8-5). A gear (8-3), the first gear (8-3) is connected to the outer rotating drum rotation drive mechanism fixed on the support plate (1), the second gear (8-4) is fixed on the other end of the inner rotating shaft (8-5), the first gear (8-3) is connected to the second gear (8-4) through a linkage mechanism, and a thread core head clamp (9) is provided on the end of the outer rotating drum away from the second gear (8-4), the thread core head clamp (9) extends into the outer rotating drum and is detachable from the inner rotating shaft (8-5) The threaded core head fixture (9) rotates along with the inner rotating shaft (8-5) and is movably connected to the outer rotating cylinder; the linkage mechanism includes a mounting plate (8-6), a pull handle (8-7), a guide column (8-8), a tension spring (8-9) and a locking plate (8-10), the mounting plate (8-6) is L-shaped, one end of which is provided with a through hole for the inner rotating shaft (8-5) to pass through and is fixedly connected to the first gear (8-3), the inner rotating shaft (8-5) passes through the mounting plate (8-6) along the through hole ) and is movably connected thereto, the other end of the mounting plate (8-6) is provided with a guide through hole matching the guide post (8-8), one end of the guide post (8-8) passes through the guide through hole and is connected to the lock plate (8-10) as a whole, the pull handle (8-7) is arranged at the other end of the guide post (8-8), a tension spring (8-9) is provided between the pull handle (8-7) and the mounting plate (8-6), and the lock plate (8-10) is connected to the second gear (8-4) under the action of the tension spring (8-9).

2. The high-precision dual rotary spindle according to claim 1, characterized in that: The outer rotating cylinder is composed of a limiting cylinder (8-2) and a mounting cylinder (8-1) connected to each other on the left and right sides. One end of the inner rotating shaft (8-5) passes through the limiting cylinder (8-2) and is rotatably connected to the mounting cylinder (8-1) through a first bearing. The first bearing is restricted in the mounting cylinder (8-1) by the limiting cylinder (8-2).

3. The high-precision dual rotary spindle according to claim 1, characterized in that: The locking plate (8-10) is arc-shaped, and locking teeth matching the second gear (8-4) are provided on its inner wall. The locking teeth mesh with the second gear (8-4) under the action of the tension spring (8-9).

4. The high-precision dual rotary spindle according to claim 1, characterized in that: The mounting seat is composed of an upper seat body (13) and a lower seat body (12) connected up and down. The lower surface of the upper seat body (13) and the upper surface of the lower seat body (12) are both provided with a semicircular groove matching the outer rotating cylinder. The outer rotating cylinder is rotatably connected between the upper seat body (13) and the lower seat body (12) through a second bearing mounted on the outer wall thereof.

5. The high-precision dual rotary spindle according to claim 1, characterized in that: The support plate (1) is provided with a slide rail (2), the translation plate (4) is slidably connected to the slide rail (2) via a slider (5) provided at the bottom, and the translation plate (4) is connected to a position adjustment electric cylinder.

6. The high-precision dual rotary spindle according to claim 5, characterized in that: The outer drum rotation drive mechanism comprises a rotation drive motor (11), a drive shaft (6) and a drive tooth member (7); a boss (3) is provided on the support plate (1) on one side of the mounting seat; the rotation drive motor (11) is mounted on the boss (3) and connected to the drive shaft (6); the drive tooth member (7) is mounted on an end of the drive shaft (6) away from the rotation drive motor (11) and meshes with the first gear (8-3).

7. The high-precision dual rotary spindle according to claim 6, characterized in that: The driving toothed member (7) comprises a long cylindrical body and a toothed portion arranged on the outer wall of the long cylindrical body, and the first gear (8-3) is meshed with the toothed portion on the outer wall of the long cylindrical body.

8. The high-precision dual rotary spindle according to claim 6, characterized in that: A guide seat (10) is also provided on the boss (3), and the drive shaft (6) passes through the guide seat (10). The drive shaft (6) is rotatably connected to the guide seat (10) via a third bearing fixedly mounted on the outer wall.

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