Core shaft floating type chain wheel type rotary table

Abstract

The utility model discloses a core shaft floating type chain wheel type rotary table, and particularly relates to rotary table equipment, which comprises a main rotary table and a lower chain wheel fixedly arranged on the main rotary table, a main core shaft is arranged on the main rotary table along the vertical direction in a sliding manner, an upper chain wheel is fixedly arranged at the top end of the main core shaft, and a main table body is fixedly arranged at the top end of the upper chain wheel; a main magnetic plate is fixedly mounted on an annular plate fixedly mounted on the outer wall of the main mandrel, an electromagnet is arranged on a bracket fixedly mounted in the main rotary table, and the main magnetic plate is close to the electromagnet when the main mandrel moves upwards. According to the central spindle floating type crankset type rotary table, the main central spindle slides in the vertical direction, so that the main table body on the upper crankset is driven to move upwards, at the moment, the electromagnet is started, the magnetic pole of the magnetic attraction face of the electromagnet is opposite to the magnetic pole of the side, adjacent to the main magnetic plate, of the main magnetic plate, and therefore the electromagnet conducts magnetic attraction on the main magnetic plate; and therefore, the main mandrel is subjected to upward traction force to reduce the downward pressure of the main mandrel, so that the main mandrel is better driven to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of turntables, in particular to a core shaft floating toothed disc type turntable. Background Art

[0002] A turntable is a machine tool device used to improve flexibility and efficiency. It allows workpieces to be machined on multiple sides from a single location, reducing the need for re-clamping and improving machining efficiency while ensuring accuracy during machining.

[0003] According to patent announcement number CN204397500U, announcement date: 2015-06-17, a toothed disc type vertical rotary workbench is disclosed, including a left toothed disc, a right toothed disc, a cross liquid bearing, a worm gear, a self-aligning liquid bearing, a rotary seat, a spacer, a retaining ring, a first oil chamber, a core shaft, a cylinder cover, a cylinder body, a positioning key, a synchronous belt, a screw, a bearing pressure cover, a fixed sleeve, a chamfered pin, a piston, a second oil chamber, a workbench, and a synchronous pulley. The workbench is fixedly installed on the core shaft, and the first oil chamber and the second oil chamber are provided in the center part above the core shaft. A self-aligning liquid bearing is provided on the left side above the core shaft, a spacer is connected to the lower left corner of the self-aligning liquid bearing, a retaining ring is provided at the lower right corner of the self-aligning liquid bearing, and a self-aligning liquid bearing is provided on the left side of the core shaft. A swivel seat is provided on the upper part, a worm gear is provided on the left side of the swivel seat, a cross liquid bearing is provided on the left side of the worm gear, a left sprocket and a right sprocket are provided on the upper part of the cross liquid bearing, and the right end face sprocket of the left sprocket is meshed with the left end face sprocket of the right sprocket; a piston is provided on the left side below the core shaft, and a cylinder body is provided on the right side, and a cylinder cover is installed on the upper part of the cylinder body; the lower part of the first oil chamber and the second oil chamber is provided with a cylinder body, and a positioning key is provided under the cylinder body; a chamfered pin is provided under the piston, and the chamfered pin is fixed in the fixed sleeve, and the worm gear is connected by the chamfered pin to make the workbench rotate, and a bearing cover is provided under the fixed sleeve, and two screws are provided under the bearing cover, a synchronous pulley is installed on the screw, and a synchronous belt is installed on the synchronous pulley.

[0004] In the prior art including the above-mentioned patent, when using a turntable, the table body is driven to rise by a corresponding hydraulic assembly, and then the table body is rotated by a worm gear to adjust the position of the workpiece. Finally, the hydraulic assembly is used to reset the table body to lower it. During the process of the table body lowering, the engagement between the two toothed discs is utilized to achieve further alignment and precise control. However, when the table body is driven to rotate by the worm gear, because the workpiece is fixed on the table body, the worm gear generates greater extrusion and friction than when the table body is unloaded. Long-term use will cause the gap between the worm gear and the worm gear to become larger, thereby causing the positioning accuracy of the table body to decrease. Utility Model Content

[0005] The purpose of the utility model is to provide a core shaft floating toothed disc type turntable to solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a core shaft floating chainring type turntable, comprising a main turntable and a lower chainring fixedly mounted on the main turntable, a main core shaft is provided on the main turntable for sliding in the vertical direction, and an upper chainring is fixedly mounted on the top of the main core shaft, a main table body is fixedly mounted on the top of the upper chainring, a main magnetic plate is fixedly mounted on the ring plate fixedly mounted on the outer wall of the main core shaft, an electromagnet is provided on a bracket fixedly mounted inside the main turntable, and when the main core shaft moves upward, the main magnetic plate approaches the electromagnet, a stainless steel bearing is fixedly mounted on the bracket, and the stainless steel bearing embraces the electromagnet.

[0007] Preferably, the bracket is coaxial with the main core shaft and embraces the outer wall of the main core shaft. A plurality of push plates that move synchronously are slidably provided on the bracket, and the plurality of push plates move synchronously to push the main core shaft.

[0008] Preferably, an iron plate is fixedly mounted on the bracket, and the iron plate is located on the magnetic attraction surface of the electromagnet, and the magnet provided on the push plate is located on one side of the iron plate.

[0009] Preferably, when the magnetic poles on the electromagnet change, the magnet is magnetically attracted to the iron plate.

[0010] Preferably, the bracket is a stainless steel frame.

[0011] Preferably, a main worm wheel and a main worm are movably provided in the main turntable for driving the main core shaft to rotate. In the above technical solution, the utility model provides a core shaft floating chainring type turntable with the following beneficial effects: the main core shaft slides in the vertical direction, thereby driving the main table body on the upper chainring to move upward, at this time, the electromagnet is turned on and the magnetic poles of the electromagnet's magnetic attraction surface and the adjacent side of the main magnetic plate are opposite, so that the electromagnet magnetically attracts the main magnetic plate, so that the main core shaft is subjected to an upward pulling force, thereby reducing the downward pressure of the main core shaft, so as to better drive the main core shaft to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 A schematic diagram of the overall structure of the main turntable provided in an embodiment of the present utility model;

[0014] Figure 2A schematic diagram of the cross-sectional structure of the main turntable provided in an embodiment of the present utility model;

[0015] Figure 3 A schematic diagram of a partial cross-sectional structure of a main turntable provided in an embodiment of the present utility model;

[0016] Figure 4 The embodiment of the present invention provides Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Description of reference numerals:

[0018] 1. Main turntable; 2. Main table body; 3. Main worm; 4. Main core shaft; 5. Upper chainring; 6. Bracket; 7. Electromagnet; 8. Stainless steel bearing; 31. Main worm gear; 32. Hydraulic cylinder sleeve; 41. Ring plate; 42. Main magnetic plate; 51. Lower chainring; 61. Guide rod; 62. Push plate; 63. Support plate; 64. Magnet; 65. Iron plate. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-4 As shown, a core shaft floating chainring type turntable includes a main turntable 1 and a lower chainring 51 fixedly mounted on the main turntable 1, a main core shaft 4 is provided on the main turntable 1 for sliding along the vertical direction, and an upper chainring 5 is fixedly mounted on the top end of the main core shaft 4, a main table body 2 is fixedly mounted on the top end of the upper chainring 5, a main magnetic plate 42 is fixedly mounted on the ring plate 41 fixedly mounted on the outer wall of the main core shaft 4, an electromagnet 7 is provided on the bracket 6 fixedly mounted inside the main turntable 1, and when the main core shaft 4 moves upward, the main magnetic plate 42 approaches the electromagnet 7, a stainless steel bearing 8 is fixedly mounted on the bracket 6, and the stainless steel bearing 8 surrounds the electromagnet 7.

[0021] By sliding the main core shaft 4 in the vertical direction, the main table body 2 on the upper chainring 5 is driven to move upward. At this time, the electromagnet 7 is turned on and the magnetic poles of the magnetic surface of the electromagnet 7 and the adjacent side of the main magnetic plate 42 are opposite, so that the electromagnet 7 magnetically attracts the main magnetic plate 42, so that the main core shaft 4 is subjected to an upward pulling force to reduce the downward pressure of the main core shaft 4, so as to better drive the main core shaft 4 to rotate.

[0022] Specifically, a hydraulic cylinder sleeve 32 is rotatably installed in the main turntable 1, and the main core shaft 4 is slidably installed in the hydraulic cylinder sleeve 32 along the vertical direction. By generating an upward pulling force on the main core shaft 4, the downward pressure on the hydraulic cylinder sleeve 32 is reduced, thereby reducing the friction force when the hydraulic cylinder sleeve 32 rotates.

[0023] As a technical solution further provided by the present invention, the bracket 6 is coaxial with the main core shaft 4 and surrounds the outer wall of the main core shaft 4. A plurality of push plates 62 that move synchronously are slidingly provided on the bracket 6, and the plurality of push plates 62 move synchronously to push the main core shaft 4.

[0024] Specifically, multiple push plates 62 are used to move synchronously to push the main core shaft 4, so that the main core shaft 4 is located in the center of the multiple push plates 62. Therefore, the main core shaft 4 is supported and the central axis is calibrated by pushing the multiple push plates 62.

[0025] Furthermore, an iron plate 65 is fixedly mounted on the bracket 6 , and the iron plate 65 is located on the magnetic attraction surface of the electromagnet 7 , and the magnet 64 provided on the push plate 62 is located on one side of the iron plate 65 .

[0026] Specifically, the guide rod 61 fixedly mounted on the push plate 62 slides on the bracket 6, and a support plate 63 is fixedly mounted on one end of the guide rod 61 opposite to the push plate 62, and the magnet 64 is fixedly mounted on the support plate 63. Figure 3 As shown, by setting the magnetic surface of electromagnet 7 to the north pole, the south pole of the main magnetic plate 42 adjacent to the electromagnet 7 can be magnetically attracted by electromagnet 7 as the main core shaft 4 moves upward. At the same time, because the magnetic surface of electromagnet 7 is the north pole, the iron plate 65 is also the north pole. At this time, the south pole of the magnet 64 adjacent to the iron plate 65 is magnetically attracted to the iron plate 65, thereby causing the iron plate 65 to simultaneously attract multiple magnets 64, driving multiple push plates 62 away from the main core shaft 4, thus freeing the main core shaft 4 from the squeeze limit. At the same time, the magnetic attraction of electromagnet 7 to the main magnetic plate 42 generates an upward pulling force on the main core shaft 4.

[0027] Furthermore, when the magnetic poles of the electromagnet 7 change, the magnet 64 is magnetically attracted to the iron plate 65 .

[0028] Specifically, by setting the magnetic surface of the electromagnet 7 to an N-pole, the S-pole on the side of the main magnetic plate 42 adjacent to the electromagnet 7 can be magnetically attracted by the electromagnet 7 as the main core shaft 4 moves upward. At the same time, the S-pole on the side of the magnet body 64 adjacent to the iron plate 65 can be magnetically attracted to the iron plate 65. Then, by changing the magnetic pole of the electromagnet 7 so that the magnetic surface of the electromagnet 7 is an S-pole, when the main core shaft 4 slides down into the hydraulic cylinder sleeve 32, the S-pole on the electromagnet 7 and the S-pole on the main magnetic plate 42 repel each other, thereby generating downward force on the falling main core shaft 4, thereby increasing the force exerted on the main core shaft 4 to slide down. At the same time, when the magnetic surface of the electromagnet 7 is an S-pole, the iron plate 65 is an S-pole. At this time, the iron plate 65 and the S-pole on the side of the magnet body 64 adjacent to the iron plate 65 repel each other, causing the multiple push plates 62 to slide and push on the main core shaft 4, thereby calibrating the axis of the main core shaft 4 and providing a certain support for the main core shaft 4 to slide down.

[0029] Furthermore, the bracket 6 is a stainless steel frame.

[0030] Furthermore, a main worm gear 31 and a main worm 3 for driving the main core shaft 4 to rotate are movably provided in the main turntable 1 .

[0031] Specifically, the main worm gear 31 is fixedly mounted on the outer wall of the hydraulic cylinder sleeve 32, and the main worm 3 is rotatably disposed within the main turntable 1 and meshes with the main worm gear 31. The main worm 3 can be rotated by a servo motor. When the main spindle 4 moves upward to disengage the lower chainring 51 from the upper chainring 5, the main worm 3 can be rotated by the servo motor, thereby meshing the main worm 3 with the main worm gear 31, driving the hydraulic cylinder sleeve 32 to rotate, thereby driving the main table body 2 at the top of the main spindle 4 to rotate.

[0032] Working principle: By setting the magnetic surface of the electromagnet 7 to the N pole, the S pole of the main magnetic plate 42 adjacent to the electromagnet 7 can be magnetically attracted by the electromagnet 7 as the main core shaft 4 moves upward. This generates an upward pulling force on the main core shaft 4, reducing the downward pressure exerted by the workpiece on the main platform 2 on the hydraulic cylinder sleeve 32. When the servo motor controls the rotation of the main worm 3, causing the main worm 3 and the main worm gear 31 to engage and drive the rotation of the hydraulic cylinder sleeve 32, the friction between the main worm 3 and the main worm gear 31 is reduced. At the same time, the S pole of the magnet 64 adjacent to the iron plate 65 can be magnetically attracted to the iron plate 65. Then, by changing the magnetic pole on the electromagnet 7 so that the magnetic surface of the electromagnet 7 is the S pole, when the main core shaft 4 slides down in the hydraulic cylinder sleeve 32, the S pole on the electromagnet 7 and the S pole on the main magnetic plate 42 repel each other, thereby generating a downward force on the fall of the main core shaft 4 to increase the force acting on the main core shaft 4 to slide down. At the same time, when the magnetic surface of the electromagnet 7 is the S pole, the iron plate 65 is the S pole. At this time, the iron plate 65 and the S pole on the side of the adjacent iron plate 65 of the magnet body 64 repel each other, so that the multiple push plates 62 slide and push on the main core shaft 4, thereby calibrating the axis of the main core shaft 4 and providing a certain support for the downward movement of the main core shaft 4.

[0033] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A spindle floating crankset turntable, characterized in that: The invention comprises a main turntable (1) and a lower tooth plate (51) fixedly mounted on the main turntable (1); a main core shaft (4) is provided on the main turntable (1) so as to slide in a vertical direction, and an upper tooth plate (5) is fixedly mounted on the top of the main core shaft (4); a main table body (2) is fixedly mounted on the top of the upper tooth plate (5); a main magnetic plate (42) is fixedly mounted on a ring plate (41) fixedly mounted on the outer wall of the main core shaft (4); an electromagnet (7) is provided on a bracket (6) fixedly mounted inside the main turntable (1); and when the main core shaft (4) moves upward, the main magnetic plate (42) approaches the electromagnet (7); a stainless steel bearing (8) is fixedly mounted on the bracket (6), and the stainless steel bearing (8) surrounds the electromagnet (7).

2. The spindle floating crankset turntable according to claim 1, characterized in that: The bracket (6) and the main core shaft (4) are coaxial and embrace the outer wall of the main core shaft (4); a plurality of push plates (62) that move synchronously are slidably provided on the bracket (6), and the plurality of push plates (62) move synchronously to push the main core shaft (4).

3. The core shaft floating crankset turntable according to claim 2, characterized in that: An iron plate (65) is fixedly mounted on the bracket (6), and the iron plate (65) is located on the magnetic attraction surface of the electromagnet (7), and the magnet (64) provided on the push plate (62) is located on one side of the iron plate (65).

4. The spindle floating crankset turntable according to claim 1, characterized in that: When the magnetic poles on the electromagnet (7) change, the magnet (64) is magnetically attracted to the iron plate (65).

5. The spindle floating crankset turntable according to claim 1, characterized in that: The bracket (6) is a stainless steel frame.

6. The spindle floating crankset turntable according to claim 1, characterized in that: A main worm wheel (31) and a main worm (3) for driving the main core shaft (4) to rotate are movably arranged in the main turntable (1).

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