Rotary working table capable of reducing in sliding mode

Abstract

The utility model relates to the field of horizontal boring machines, in particular to a slidable reducing rotary table which comprises a rotary seat. A working table coaxial with the rotary base is fixedly installed above the rotary base, T-shaped rails are arranged in the circumferential direction of the working table at equal angles, sliding supporting bodies capable of sliding in the radial direction of the working table are arranged on the T-shaped rails, and shaking type power assemblies matched with the sliding supporting bodies in a tooth mode are arranged on the front sides of the sliding supporting bodies in the length direction. Sliding grooves are formed in the upper side end faces of the sliding supporting bodies in the length direction, and sliding limiting mechanisms capable of sliding in cooperation with the sliding grooves are arranged above the sliding grooves. According to the utility model, the sliding support body and the rocking type power assembly are arranged on the workbench, so that the sliding support body can move in the radial direction of the workbench, thereby expanding the support range of the workbench; a sliding limiting mechanism is arranged on the sliding supporting body, so that the limiting requirement during machining of workpieces of multiple sizes is met; the problem that the supporting range is insufficient when the rotating table is used for machining large workpieces is solved.

Description

Technical Field

[0001] This utility model belongs to the field of horizontal boring machines, specifically designing a rotary worktable with a sliding diameter change. Background Technology

[0002] Horizontal boring machines offer significant advantages for machining large and complex-shaped workpieces, primarily used for machining holes and keyways on large workpieces. A rotary table is an important accessory on a horizontal boring machine, capable of rotating around its central axis. Its main function is to achieve workpiece indexing and circumferential feed during boring, facilitating the machining of holes, grooves, and other structures distributed along the circumference. For example, when machining a slewing bearing with multiple equally spaced circumferential holes, the rotary table can fix the workpiece and precisely rotate it to a specified angle, allowing the boring tool to machine these holes one by one. Traditional rotary tables are often designed for workpieces of conventional size and weight, with relatively fixed support structures and dimensions. In fields such as aerospace, shipbuilding, and energy equipment, there are frequent demands for machining ultra-large workpieces. For example, large turbine disks for aero engines and hubs for large wind turbines; existing rotary tables often exhibit insufficient support range when handling such large workpieces. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, this utility model provides a sliding variable diameter rotary table, which can solve the problem of insufficient support range of traditional rotary tables when processing large workpieces.

[0004] The technical solution adopted by this utility model is as follows: a slidable variable diameter rotary worktable, including a rotary base, a worktable, a sliding support body, a rocking power component, and a sliding limiting mechanism; a worktable coaxial with the rotary base is fixedly installed above the rotary base, and the worktable also includes a T-shaped track and scale lines. The T-shaped track is set at equal angles along the circumference of the worktable, and a sliding support body that can slide along the radial direction of the worktable is set on the T-shaped track. A scale line with the same length as the sliding support body is set on the left side of the sliding support body, and the length direction of the scale line is parallel to the length direction of the sliding support body. A rocking power component that meshes with the teeth of the sliding support body is set on the front side of the sliding support body along its length direction. The sliding support body also includes a slide groove, a rectangular groove, and a rack; wherein the slide groove is set on the upper end face of the sliding support body along its length direction, and a sliding limiting mechanism that can slide with the slide groove is set above the slide groove; the rectangular groove is opened on the left end face of the sliding support body along its length direction, and a rack with opposing teeth is installed on the upper and lower groove walls of the rectangular groove.

[0005] The lower side of the sliding support has an inverted T-shaped structure, and seated universal ball bearings are evenly installed along the length of the lower end face of the sliding support.

[0006] The rocking power assembly includes a crank handle, a rotating shaft, a support base, and a gear; wherein the support base is fixedly installed on the workbench, a bearing is provided above the support base, a rotating shaft is sleeved inside the bearing, a crank handle is provided at the left end of the rotating shaft, a gear is sleeved at the right end of the rotating shaft, and the gear is meshed with a rack installed on the upper and lower walls of the rectangular groove.

[0007] Each of the rotating shafts is fitted with a shaft locking device, which is fixed to the end face of the support base near the crank handle by bolts.

[0008] The sliding limit mechanism includes a slider, a fixed lead screw, a pressure plate, a fastening nut, and a limit post; wherein the slider slides in conjunction with the slide groove, a limit post is provided on the side of the slider near the axis of the worktable, a fixed lead screw is provided on the side of the slider away from the axis of the worktable, a pressure plate is sleeved below the fixed lead screw, the pressure plate can move up and down in the length direction of the fixed lead screw, and a fastening nut is screwed onto the fixed lead screw above the pressure plate.

[0009] The beneficial effects of this utility model are as follows: The mechanism of this utility model is reasonably designed. By setting a sliding support body, a rocking power component, and scale lines on the worktable, the sliding support body can move accurately in the radial direction of the worktable, thereby expanding the support range of the worktable. A sliding limit mechanism is set on the sliding support body, which allows the fixture to slide along the length direction of the sliding support body, thereby adapting to the limit requirements when processing workpieces of various sizes. It solves the problem of insufficient support range of existing rotary worktables when processing large workpieces, and has flexible applicability. Attached Figure Description

[0010] Figure 1 This is a front view of the present utility model;

[0011] Figure 2 This is a top view of the present invention;

[0012] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 4 This utility model Figure 3 Enlarged view of a specific area;

[0014] Figure 5 This is a schematic diagram of the rocking component structure of this utility model;

[0015] Figure 6 This is a schematic diagram of the sliding limiting mechanism of this utility model;

[0016] Figure 7 This is a schematic diagram of the universal ball bearing structure with mounting base of this utility model;

[0017] Figure 8 This is a schematic diagram of the shaft locking device of this utility model.

[0018] The markings in the diagram are: 1. Rotary seat; 2. Worktable; 21. T-shaped rail; 22. Scale line; 3. Sliding support; 31. Slide groove; 32. Rectangular groove; 33. Rack; 4. Rocking power unit; 41. Handle; 42. Rotating shaft; 43. Support seat; 44. Gear; 5. Sliding limit mechanism; 51. Slider; 52. Fixed lead screw; 53. Pressure plate; 54. Fastening nut; 55. Limiting post; 6. Sealed universal ball bearing; 7. Shaft locking device. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-8 As shown, a slidable variable-diameter rotary worktable includes a rotary base 1, a worktable 2, a sliding support body 3, a rocking power component 4, and a sliding limit mechanism 5. A worktable 2, coaxial with the rotary base 1, is fixedly mounted above the rotary base 1. The worktable 2 also includes a T-shaped track 21 and scale lines 22. The T-shaped track 21 is arranged at equal angles along the circumference of the worktable 2. A sliding support body 3, which can slide along the radial direction of the worktable 2, is arranged on the T-shaped track 21. A sliding support body 3 is arranged on the left side of the sliding support body 3 on the worktable 2. The sliding support body 3 has graduation lines 22 of the same length as the body 3, and the length direction of the graduation lines 22 is parallel to the length direction of the sliding support body 3. Each sliding support body 3 has a rocking power component 4 that meshes with the teeth of the sliding support body 3 on its front side along its length direction. The sliding support body 3 also includes a sliding groove 31, a rectangular groove 32, and a rack 33. The sliding groove 31 is located on the upper end face along the length direction of the sliding support body 3, and a sliding limiting mechanism 5 that can slide with the sliding groove 31 is located above the sliding groove 31. The rectangular groove 32 is formed along the length direction of the sliding support body 3. On the left end face, the upper and lower walls of the rectangular groove 32 are fitted with toothed racks 33 with opposing teeth. When the rotary table rotates, the rotary seat 1 rotates, which in turn drives the worktable 2 to rotate. In this example, there are 8 T-shaped rails 21, and the number of T-shaped rails 21 can be adjusted according to actual needs. Four evenly distributed T-shaped rails 21 are provided with sliding support bodies 3 that can slide along the radial direction of the worktable 2. The number of sliding support bodies 3 can also be set according to actual needs. The rocking power component 4 is the power source for the sliding support body 3. The rocking power component 4 and the sliding support body 3 are toothed and coordinated. By rocking the rocking power component 4, the sliding support body 3 slides away from the axis of the worktable 2, thereby expanding the support range of the worktable 2. When expanding the support range of the worktable 2, the movement distance of the sliding support body 3 can be precisely controlled by observing the scale line 22, which is beneficial to the accuracy of this utility model. The sliding limit mechanism 5 can slide along the length direction of the sliding support body, thereby adapting to the limit requirements when processing workpieces of various sizes.

[0021] The lower side of the sliding support 3 has an inverted T-shaped structure, and the lower end face of the T-shaped structure is uniformly equipped with seated universal ball bearings 6 along its length. The inverted T-shaped structure on the lower side of the sliding support cooperates with the T-shaped track 21 set on the worktable 2. During the sliding process of the sliding support 3, the ball bearings of the seated universal ball bearings 6 slide in contact with the bottom surface of the T-shaped track 21. This setting helps the sliding support 3 to slide more smoothly and can improve its sliding efficiency.

[0022] The rocking power assembly 4 includes a handle 41, a rotating shaft 42, a support base 43, and a gear 44. The support base 43 is fixedly installed on the workbench 2. A bearing is provided above the support base 43, and the rotating shaft 42 is sleeved inside the bearing. The handle 41 is provided at the left end of the rotating shaft 42, and the gear 44 is sleeved at the right end of the rotating shaft 42. The gear 44 meshes with the rack 33 installed on the upper and lower walls of the rectangular groove 32. The function of the rocking power assembly 4 is to provide sliding power to the sliding support 3. Specifically, by manually cranking the handle 41, the handle 41 drives the rotating shaft 42, the rotating shaft 42 drives the gear 44, the gear 44 rotates and causes the rack 33 to move. The rack 33 causes the sliding support 3 to move along the length of the T-shaped track 21. The rocking power assembly 4 uses the hand cranking handle 41 to make the gear 44 and rack 33 mesh and transmit power, thereby moving the sliding support 3 along the length of the T-shaped track 21. It has the advantages of simple and intuitive operation, precise power transmission, high reliability, and low cost.

[0023] Each rotating shaft 42 is fitted with a shaft locking device 7, which is fixed to the end face of the support base 43 near the crank handle 41 by bolts. Here, the shaft locking device 7 of IMAO, model QCSPL0920-S, is used. Its function is to lock the rotating shaft 42 when a workpiece is being processed on the worktable 2, thereby fixing the position of the sliding support body 3 and preventing the sliding support body 3 from moving due to the transmission of gear 44 and rack 33 during workpiece processing, thus avoiding processing errors. Specifically, when processing the workpiece, the knob above the shaft locking device is rotated to make its built-in clamping part grab and limit the shaft. This setting is beneficial to the stability of this utility model and the accuracy of processing workpieces.

[0024] The sliding limiting mechanism 5 includes a slider 51, a fixed lead screw 52, ​​a pressure plate 53, a fastening nut 54, and a limiting post 55. The slider 51 slides in conjunction with the slide groove 31. A limiting post 55 is located on the side of the slider 51 near the axis of the worktable 2. A fixed lead screw 52 is located on the side of the slider 51 away from the axis of the worktable 2. A pressure plate 53 is sleeved below the fixed lead screw 52 and can move up and down along the length of the fixed lead screw 52. A fastening nut 54 is screwed onto the fixed lead screw 52 above the pressure plate 53. When limiting the workpiece, the size of the workpiece is considered. Adjust the sliding support 3 to a suitable position, place the workpiece on the sliding support 3, and slide the sliding limit mechanism 5 on the sliding support 3 to make the limit posts 55 on the sliding limit mechanism 5 press against the workpiece. Then, turn down the fastening nut 54 screwed on the fixing screw 52 so that the lower end face of the fastening nut 54 is close to the pressure plate 53, and the lower end face of the pressure plate 53 is close to the upper end face of the sliding support 3, thereby fixing the workpiece. Multiple fastening nuts 54 can be provided and screwed onto the pressure plate 53 in sequence to further stabilize its limiting performance.

[0025] Specific working principle:

[0026] When processing large workpieces and needing to expand the support range of the rotary table, crank the handle 41 towards the axis of the worktable 2 by hand. The handle 41 drives the rotating shaft 42, which in turn drives the gear 44. The gear 44 meshes with the rack 33, causing the sliding support 3 to move radially away from the axis of the worktable 2. During this process, adjust the sliding support 3 to the appropriate position according to the workpiece size and the scale line 22 set on the worktable 2. Then, lock the rotating shaft 42 with the knob above the locking device. Place the workpiece on the sliding support 3 and slide the sliding limit mechanism 5 on the sliding support 3 to make the limit post 55 on the sliding limit mechanism 5 press against the workpiece. Then, turn down the fastening nut 54 screwed on the fixing screw 52 so that the lower end face of the fastening nut 54 is close to the pressure plate 53. The lower end face of the pressure plate 53 is close to the upper end face of the sliding support 3, thus fixing the workpiece.

Claims

1. A slidable variable diameter swivel table, characterized by: The utility model provides a rotary seat (1), workstation (2), sliding support (3), swing power assembly (4), sliding limit mechanism (5), rotary seat (1) top fixed installation has with rotary seat (1) coaxial workstation (2), workstation (2) still includes T type track (21), scale line (22), workstation (2) circumferential direction equal angle is provided with T type track (21), T type track (21) is provided with the sliding support (3) of the radial direction sliding of workstation (2), workstation (2) is provided with the scale line (22) of the same length with sliding support (3) left side of sliding support (3), the length direction of scale line (22) and the length direction of sliding support (3) are parallel, and the length direction front side of sliding support (3) is provided with swing power assembly (4) with the tooth of sliding support (3) cooperation, and sliding support (3) still includes sliding groove (31), rectangular recess (32), rack (33), wherein sliding groove (31) sets up on the length direction upper side end face of sliding support (3), and the sliding groove (31) top is provided with the sliding limit mechanism (5) of the cooperation sliding of sliding groove (31), and rectangular recess (32) is opened in the length direction left side end face of sliding support (3), and the rectangular recess (32) upper and lower groove wall is installed rack (33) with the opposite tooth.

2. The slidable variable diameter swivel table of claim 1, wherein: The lower side of the sliding support (3) is a reverse T-shaped structure, and the lower end surface of the sliding support (3) is uniformly provided with a seat universal ball (6) in the length direction.

3. The slidable variable diameter swivel table of claim 1, wherein: The swing power assembly (4) comprises a crank handle (41), a rotating shaft (42), a support seat (43) and a gear (44). The support seat (43) is fixedly installed on the workstation (2), a bearing is arranged above the support seat (43), the rotating shaft (42) is sleeved in the bearing, the crank handle (41) is arranged at the left end of the rotating shaft (42), the gear (44) is sleeved at the right end of the rotating shaft (42), and the gear (44) is in meshing connection with the rack (33) installed on the upper and lower groove walls of the rectangular recess (32).

4. The slidable variable diameter swivel table of claim 3, wherein: The rotating shaft (42) is sleeved with an axle lock (7), and the axle lock (7) is fixed on the side end face of the support seat (43) close to the crank handle (41) through bolts.

5. The slidable variable diameter swivel table of claim 1 wherein: The sliding limit mechanism (5) comprises a sliding block (51), a fixed screw rod (52), a pressing plate (53), a fastening nut (54) and a limiting column (55). The sliding block (51) is in sliding connection with the sliding groove (31), the limiting column (55) is arranged on the upper side of the sliding block (51) close to the shaft center of the workstation (2), the fixed screw rod (52) is arranged on the upper side of the sliding block (51) away from the shaft center of the workstation (2), the pressing plate (53) is sleeved below the fixed screw rod (52), the pressing plate (53) can move up and down in the length direction of the fixed screw rod (52), and the fastening nut (54) is screwed on the fixed screw rod (52) above the pressing plate (53).

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