Expansion sleeve device for machining inner hole of sun gear

Abstract

The utility model discloses an expansion sleeve device for sun gear inner hole machining, which relates to the technical field of sun gear machining and comprises a sun gear body and a base, the upper portion of the base is connected with an outer fixing sleeve, a lead screw is arranged in the outer fixing sleeve and connected with a sliding block through threads, and the front end of the sliding block is connected with a moving block. The device is provided with an expansion sleeve structure, when the device is used, the handle can be rotated to enable the lead screw to rotate, the lead screw rotates and drives the sliding block on the upper portion to move in a sliding groove in the outer fixing sleeve at the same time, and therefore the device is convenient to use. When the sun gear body is machined, the sliding block moves and drives the front moving block to descend synchronously, at the moment, the moving block enables the lower triangular wedge to move downwards, the wedge extrudes the inner fixing sleeve, meanwhile, the spring in the inner fixing sleeve is stretched, the connecting rod slides out of the inner fixing sleeve, fixing of the sun gear body is completed, and the sun gear body can be machined.

Description

Technical Field

[0001] The utility model relates to the technical field of sun gear processing, in particular to a sleeve expansion device used for processing the inner hole of a sun gear. Background Art

[0002] The sun gear is widely used in reducers and speed reducers, and mainly plays the role of a connecting link. When processing the sun gear, it must be fixed first. The sun gear itself is a thin-walled clamp, and the diameter of the CNC lathe jaws will be deformed during clamping. At the same time, the outer diameter of the tooth is larger than the bearing gear, and the jaws are not convenient for clamping. The existing device still has some defects; for example;

[0003] For example, the publication number is CN211192068U, a high-precision expansion sleeve tooling for processing the inner hole of a sun gear. When the technology is used, it includes an inner cone seat, a locking nut and a sun gear. The inner cone seat is threadedly connected to the locking nut. A top is provided at the bottom of the inner cone seat. The sun gear is placed inside the inner cone seat. One end of the sun gear contacts the top to complete the first positioning. An expansion sleeve is provided at the upper end of the sun gear. An open groove is provided on the expansion sleeve. The sun gear is fixed by rotating and squeezing the expansion sleeve through the locking nut to complete the second positioning, thereby realizing high-precision positioning of the sun gear and high-precision repeated positioning.

[0004] The above device has some problems. It is cumbersome to use. The clamping force of the three-jaw chuck is large, and the inner cone seat is easily marked by clamping. The locking nut and the inner cone seat are connected by threads, and the installation is too complicated. The top part is inserted into the center hole, which causes interference with the tool during processing.

[0005] Therefore, we proposed a sleeve expansion device for processing the inner hole of the sun gear in order to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a sleeve expansion device for processing the inner hole of a sun gear, so as to solve the problem raised by the above background technology that the sleeve expansion device for processing the inner hole of a sun gear on the market currently has a poor sleeve expansion effect and is inconvenient to fix sun gears of different sizes when used.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sun gear inner hole processing expansion sleeve device, comprising a sun gear body and a base;

[0008] The upper part of the base is connected to the outer fixing sleeve, and a screw rod is arranged inside the outer fixing sleeve, and the screw rod is connected to the slider through a threaded connection, the front end of the slider is connected to the moving block, and a wedge is connected below the moving block, and an inner fixing sleeve is arranged inside the outer fixing sleeve;

[0009] The base is provided with a through hole, and a latch is connected through the through hole, and the latch is connected to a fixed block, the inner side of the fixed block is fixedly connected to a sliding rod, and the sliding rod is connected to the placement table through an adjustment mechanism.

[0010] As a preferred technical solution of the utility model, the upper part of the base is connected to the two sides of the bottom of the outer fixing sleeve by bolts, and the bolts are symmetrically arranged about the center of the outer fixing sleeve, and the bolts are made of metal.

[0011] As a preferred technical solution of the utility model, a handle is arranged below the screw rod, and the surface of the handle is provided with anti-slip grooves, and the screw rod is symmetrically arranged about the center of the outer fixing sleeve.

[0012] As a preferred technical solution of the utility model, a slider is connected above the screw rod, and a wedge is connected below the slider, and the wedge is triangular.

[0013] As a preferred technical solution of the utility model, the interior of the outer fixing sleeve is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the spring, and one end of the spring is fixedly connected to the interior of the inner fixing sleeve, and the connecting rod is connected to the inner fixing sleeve by a sliding connection.

[0014] As the preferred technical solution of the utility model, the adjustment mechanism includes a connecting block, and the connecting block is fixedly connected to the sliding rod, and a push rod is connected to the connecting block, the front end of the push rod is connected to the adjustment arm, and the top of the adjustment arm is connected to the bottom of the placement table, and the adjustment arm is connected to the sliding rod through a sliding connection.

[0015] As a preferred technical solution of the utility model, a trapezoidal groove is arranged inside the placement table, and the placement table is symmetrically arranged about the center of the base, and the through holes are arranged in an array on both sides of the base.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The device is provided with an expansion sleeve structure. When in use, the handle can be turned to rotate the screw rod. When the screw rod rotates, the upper slider is driven to move in the slide groove inside the outer fixed sleeve, so that the slider moves and drives the front moving block to descend synchronously. At this time, the moving block moves the lower triangular wedge downward, so that the wedge squeezes the inner fixed sleeve, and the spring in the inner fixed sleeve is stretched. At this time, the connecting rod slides out of the inner fixed sleeve, completing the fixation of the sun gear body, and it can be processed;

[0018] 2. The device is provided with an adjustment structure. When in use, the sun gear body is placed above the placement table. Since trapezoidal grooves of different sizes are provided inside the placement table, it can be better adapted to sun gear bodies of different sizes. When the sun gear body is too large or too small, the push rod on the connecting block can be started to drive the adjustment arm to slide on the slide rod, so that the adjustment arm drives the placement table above to adjust, and sun gear bodies of different sizes can be fixed. When the sun gear body is too high or too low, the pin on the fixing block can be pulled out, and the size of the sun gear body can be adjusted. The fixing block can be connected to the through holes at different positions on the base through the pin to facilitate the use of sun gears of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the side section structure of the base of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the external fixing sleeve of the utility model;

[0023] Figure 5 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the wedge of the utility model.

[0025] In the figure: 1. sun gear body; 2. base; 3. external fixing sleeve; 4. screw rod; 5. slider; 6. moving block; 7. wedge; 8. connecting rod; 9. spring; 10. internal fixing sleeve; 11. latch; 12. fixing block; 13. through hole; 14. sliding rod; 15. connecting block; 16. push rod; 17. adjusting arm; 18. placing table. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] See also Figure 1-6 The utility model provides a technical solution: a sun gear inner hole processing expansion sleeve device, comprising a sun gear body 1 and a base 2, the upper part of the base 2 is connected to the bottom two sides of an outer fixing sleeve 3 by bolts, and the bolts are symmetrically arranged about the center of the outer fixing sleeve 3, and the bolts are made of metal;

[0028] The top of the base 2 is connected to the outer fixing sleeve 3, the inside of the outer fixing sleeve 3 is connected to one end of the connecting rod 8, and the other end of the connecting rod 8 is connected to the spring 9, and one end of the spring 9 is fixedly connected to the inside of the inner fixing sleeve 10, the connecting rod 8 is connected to the inner fixing sleeve 10 through a sliding connection, and a screw rod 4 is arranged inside the outer fixing sleeve 3, a handle is arranged below the screw rod 4, and the surface of the handle is provided with anti-slip patterns, and the screw rod 4 is symmetrically arranged about the center of the outer fixing sleeve 3, a slider 5 is connected above the screw rod 4, and a wedge 7 is connected below the slider 5, and the wedge 7 is triangular, and the screw rod 4 is connected to the slider 5 through a threaded connection, the front end of the slider 5 is connected to the moving block 6, and the moving block 6 is connected with the wedge 7 below, and the inner fixing sleeve 10 is arranged inside the outer fixing sleeve 3;

[0029] At the same time, when in use, the handle can be turned to rotate the screw rod 4, and the screw rod 4 rotates and drives the upper slider 5 to move in the slide groove inside the outer fixed sleeve 3, so that the slider 5 moves and drives the moving block 6 in the front to synchronously descend. At this time, the moving block 6 moves the triangular wedge 7 below downward, so that the wedge 7 squeezes the inner fixed sleeve 10, and the spring 9 in the inner fixed sleeve 10 is stretched. At this time, the connecting rod 8 slides out of the inner fixed sleeve 10 to complete the fixation of the sun gear body 1, and it can be processed. When the processing is completed, it only needs to reverse the handle to reverse the screw rod 4 to move the slider 5 upward, so that the wedge 7 moves upward. At this time, the connecting rod 8 is automatically reset by the spring 9, and the inner fixed sleeve 10 is reset at the same time.

[0030] The base 2 is provided with a through hole 13, and a latch 11 is connected through the inside of the through hole 13, and the latch 11 is connected to the fixed block 12, the inner side of the fixed block 12 is fixedly connected to the slide bar 14, and the slide bar 14 is connected to the placement table 18 through an adjustment mechanism, the adjustment mechanism includes a connecting block 15, and the connecting block 15 is fixedly connected to the slide bar 14, and a push rod 16 is connected to the connecting block 15, the front end of the push rod 16 is connected to the adjustment arm 17, and the upper part of the adjustment arm 17 is connected to the bottom of the placement table 18, and the adjustment arm 17 is connected to the slide bar 14 through a sliding connection, a trapezoidal groove is provided inside the placement table 18, and the placement table 18 is symmetrically arranged about the center of the base 2, and the through holes 13 are arranged in an array on both sides of the base 2;

[0031] First, when using, place the sun gear body 1 on the placement table 18. Since the placement table 18 is provided with trapezoidal grooves of different sizes, it can be better adapted to sun gear bodies 1 of different sizes. When the sun gear body 1 is too large or too small, the push rod 16 on the connecting block 15 can be started to drive the adjusting arm 17 to slide on the sliding rod 14, so that the adjusting arm 17 drives the placement table 18 above to adjust, and sun gear bodies 1 of different sizes can be fixed. When the sun gear body 1 is too high or too low, the pin 11 on the fixing block 12 can be pulled out, and the size of the sun gear body 1 can be adjusted, and the fixing block 12 can be connected to the through holes 13 at different positions on the base 2 through the pin 11, so as to facilitate the use of sun gears of different heights.

[0032] Working principle: When using the expansion sleeve device for processing the inner hole of the sun gear, first place the sun gear body 1 on the placement table 18. Since the placement table 18 is provided with trapezoidal grooves of different sizes, it can be better adapted to sun gear bodies 1 of different sizes. When the sun gear body 1 is too large or too small, the push rod 16 on the connecting block 15 can be started to drive the adjusting arm 17 to slide on the sliding rod 14, so that the adjusting arm 17 drives the placement table 18 above to adjust, and sun gear bodies 1 of different sizes can be fixed. When the sun gear body 1 is too high or too low, the pin 11 on the fixing block 12 can be pulled out, and the size of the sun gear body 1 can be adjusted, and the fixing block 12 can be connected to the through holes 13 at different positions on the base 2 through the pin 11, so as to facilitate adjustment of different heights. The sun gear is used, and the handle can be turned during use to rotate the screw rod 4, and the screw rod 4 rotates, and the upper slider 5 is driven to move in the slide groove inside the outer fixed sleeve 3 while the screw rod 4 rotates, so that the slider 5 drives the moving block 6 in the front to descend synchronously while moving. At this time, the moving block 6 moves the triangular wedge 7 below downward, so that the wedge 7 squeezes the inner fixed sleeve 10, and the spring 9 in the inner fixed sleeve 10 is stretched. At this time, the connecting rod 8 slides out of the inner fixed sleeve 10, completing the fixation of the sun gear body 1, and it can be processed. When the processing is completed, you only need to reverse the handle to reverse the screw rod 4 to move the slider 5 upward, so that the wedge 7 moves upward. At this time, the connecting rod 8 is automatically reset by the spring 9, and the inner fixed sleeve 10 is driven to reset.

[0033] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sun gear inner hole processing expansion sleeve device, comprising a sun gear body (1) and a base (2); Features: The upper part of the base (2) is connected to the outer fixing sleeve (3), and a screw rod (4) is arranged inside the outer fixing sleeve (3), and the screw rod (4) is connected to the slider (5) through a threaded connection, the front end of the slider (5) is connected to the moving block (6), and a wedge (7) is connected below the moving block (6), and an inner fixing sleeve (10) is arranged inside the outer fixing sleeve (3); The base (2) is provided with a through hole (13), and a latch (11) is connected through the inside of the through hole (13), and the latch (11) is connected to a fixed block (12), the inner side of the fixed block (12) is fixedly connected to a slide bar (14), and the slide bar (14) is connected to a placement platform (18) through an adjustment mechanism.

2. The expansion sleeve device for sun gear inner hole machining according to claim 1, characterized in that: The top of the base (2) is connected to the two sides of the bottom of the outer fixing sleeve (3) via bolts, and the bolts are symmetrically arranged about the center of the outer fixing sleeve (3), and the bolts are made of metal.

3. The expansion sleeve device for sun gear inner hole machining according to claim 1, characterized in that: A handle is provided below the screw rod (4), and the surface of the handle is provided with anti-slip grooves, and the screw rod (4) is symmetrically arranged with respect to the center of the outer fixing sleeve (3).

4. The expansion sleeve device for sun gear inner hole machining according to claim 3, characterized in that: The upper part of the screw rod (4) is connected with a slider (5), and the lower part of the slider (5) is connected with a wedge (7), and the wedge (7) is triangular.

5. The expansion sleeve device for sun gear inner hole machining according to claim 1, characterized in that: The interior of the outer fixing sleeve (3) is connected to one end of a connecting rod (8), and the other end of the connecting rod (8) is connected to a spring (9), and one end of the spring (9) is fixedly connected to the interior of an inner fixing sleeve (10), and the connecting rod (8) is connected to the inner fixing sleeve (10) via a sliding connection.

6. The expansion sleeve device for sun gear inner hole machining according to claim 1, characterized in that: The adjustment mechanism comprises a connecting block (15), and the connecting block (15) and the sliding rod (14) are fixedly connected, and a push rod (16) is connected to the connecting block (15), the front end of the push rod (16) is connected to an adjustment arm (17), and the upper part of the adjustment arm (17) is connected to the bottom of a placement table (18), and the adjustment arm (17) is connected to the sliding rod (14) through a sliding connection.

7. The expansion sleeve device for sun gear inner hole machining according to claim 1, characterized in that: A trapezoidal groove is arranged inside the placement platform (18), and the placement platform (18) is arranged symmetrically with respect to the center of the base (2), and the through holes (13) are arranged in an array on both sides of the base (2).

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