CN212144841U

CN212144841U - Manual tight device that expands of gear hobbing

Info

Publication number: CN212144841U
Application number: CN202020734568.7U
Authority: CN
Inventors: 邓雪梅
Original assignee: JIANGSU NANFANG ELECTROMECHANICAL CO LTD
Current assignee: JIANGSU NANFANG ELECTROMECHANICAL CO LTD
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-12-15
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to a manual tight device that expands of gear hobbing, including fixed disk, base, mount pad and positioning disk, the base is in through first screw fixed mounting on the fixed disk, through second screw fixed connection on the base top surface the mount pad, the mount pad lateral surface has cup jointed the floating ring, be connected with elastic component between floating ring and mount pad, floating ring and mount pad pass through the cylindric lock location, the floating ring lateral surface cup joints the positioning disk, the positioning disk is close to base one end is through third screw fixed connection to on the mount pad, floating ring top surface fixed connection rises the cover, fixedly connected with bolt on the mount pad top surface. The utility model provides a manual tight device that expands of gear hobbing adopts the mode in interior outer awl cooperation adjustment clearance for product and the cover zonulae occludens that expands, through packing ring roof pressure toper cover, local atress influence life-span is avoided appearing in increase area of contact, makes things convenient for the work piece to dismantle convenient to use simultaneously.

Description

Manual tight device that expands of gear hobbing

Technical Field

The utility model relates to a gear frock preparation correlation technique field, concretely relates to manual tight device that expands of gear hobbing.

Background

The hobbing is to process gears by generating method principle, and the hobbing is used to process the opposite wheel which is equivalent to the meshing of helical gear pair.

The traditional hobbing tool is simple to manufacture, but the precision of a processed product is unstable, the requirement on the size of an inner hole is strict and is not easy to control, the subsequent gear grinding cannot be performed due to large clearance, and the subsequent processing has to be ensured by increasing allowance, so that the cost is increased, and the strength of a gear is influenced to a certain extent; the small clearance is difficult to clamp, and some ordered hydraulic expansion mechanisms are expensive, long in order period, have some specific requirements on a machine tool, and have higher cost for small-batch products.

SUMMERY OF THE UTILITY MODEL

For solving the problem that prior art exists, the utility model provides a manual tight device that expands of gear-hobbing adopts the mode in interior outer awl cooperation adjustment clearance for product and the cover zonulae occludens that expands, through packing ring roof pressure toper cover, local atress influence life-span is avoided appearing in the increase area of contact, makes things convenient for the work piece to dismantle convenient to use simultaneously.

In order to achieve the above object, the utility model adopts the following technical scheme: a manual gear hobbing expansion device comprises a fixed disc, a base, a mounting seat and a positioning disc, wherein the base is fixedly mounted on the fixed disc through a first screw, the top surface of the base is fixedly connected with the mounting seat through a second screw, a floating ring is sleeved on the outer side surface of the mounting seat, an elastic assembly is connected between the floating ring and the mounting seat, the floating ring and the mounting seat are axially positioned through a cylindrical pin, the outer side surface of the floating ring is sleeved with the positioning disc, one end, close to the base, of the positioning disc is fixedly connected onto the mounting seat through a third screw, and a workpiece is mounted at the other end of the positioning disc;

the top surface of the floating ring is fixedly connected to an expansion sleeve, one part of the inner side surface of the expansion sleeve is sleeved on the outer side surface of the mounting seat, the other part of the inner side surface of the expansion sleeve inclines towards the outer side surface to form a conical surface and is sleeved on the outer side surface of the conical sleeve, the outer side surface of the conical sleeve is matched with the conical surface on the inner side of the expansion sleeve, and a workpiece is sleeved on the outer side surface of the expansion sleeve;

the mounting seat is characterized in that a bolt is fixedly connected to the top surface of the mounting seat, a washer and a nut are sequentially sleeved on the bolt in the axial direction, one end face of the washer axially presses the conical sleeve, the other end face of the washer is attached to the end face of the nut, and the nut is matched with the bolt and is in rotating connection with the bolt.

Preferably, the first screw, the second screw and the third screw are all provided with a plurality of screws and are arranged in an equidistant circumferential array.

In any of the above aspects, preferably, the elastic member is provided in a plurality and arranged in an equidistant circumferential array.

In any of the above schemes, preferably, the elastic assembly includes a pressure spring whose elastic direction is designed in an axial direction, one end of the pressure spring is fixedly connected to the mounting seat, and the other end of the pressure spring is fixedly connected to the floating ring.

In any of the above solutions, preferably, the cylindrical pin axially penetrates through the floating ring and then is fixedly inserted into the mounting seat, and the floating ring can move up and down.

In any of the above schemes, preferably, a sliding groove is formed in the inner side surface of the conical sleeve, a key block is fixedly connected to the top of the mounting seat, and the key block is matched with the sliding groove and slides axially relative to the sliding groove.

In any of the above schemes, preferably, the inner side surface of the conical sleeve is designed in a stepped manner, the washer is located inside the conical sleeve, one end of the washer is pressed against the axial end surface of the step, a part of the nut is located inside the conical sleeve, and one end of the nut is attached to the other end surface of the washer, a retainer ring is arranged at an opening of the conical sleeve, and the retainer ring is embedded inside the conical sleeve and sleeved on the outer side surface of the nut.

In any of the above schemes, preferably, the expansion sleeve is fixedly connected with a retaining column, and the retaining column is inserted into the expansion sleeve in a direction perpendicular to the axial direction to strengthen the circumferential connection of the expansion sleeve.

Compared with the prior art, the utility model provides a manual tight device that expands of gear hobbing has following beneficial effect:

1) the utility model provides a manual tight device that expands of gear hobbing adopts the mode in the interior external conical surface cooperation adjustment clearance for work piece and the cover zonulae occludens that expands, through packing ring roof pressure toper cover, the area of contact of increase nut and packing ring avoids appearing local atress and influences the nut life-span, realizes through the cooperation of floating ring and pressure spring that the roof pressure rises the cover and drives the work piece and remove, makes things convenient for the work piece to dismantle convenient to use.

2) The utility model provides a manual tight device that expands of gear hobbing makes the floating ring can carry out axial motion through the cylindric lock location, avoids appearing with the unable axial displacement's of mount pad or positioning disk roof pressure phenomenon.

3) The utility model provides a manual tight device that expands of gear hobbing realizes getting into the material of inside influence through being equipped with the retaining ring outside dust, water etc. and plays isolation protection's effect.

Drawings

Fig. 1 is a sectional view of the manual gear hobbing expansion device provided by the utility model;

the figures are labeled as follows: 1. a nut; 2. a retainer ring; 3. a conical sleeve; 4. a gasket; 5. a key block; 6. expanding sleeves; 7. a bumping post; 8. a mounting seat; 9. a floating ring; 10. positioning a plate; 11. a pressure spring; 12. a second screw; 13. a base; 14. a first screw; 15. fixing the disc; 16. a cylindrical pin; 17. and a third screw.

Detailed Description

In order to further understand the inventive content of the present invention, the present invention will be explained in detail with reference to the specific embodiments.

As shown in fig. 1, according to an embodiment of the manual gear hobbing expansion device provided by the present invention, the manual gear hobbing expansion device comprises a fixed disk 15, a base 13, a mounting seat 8 and a positioning disk 10.

The base 13 is fixedly installed on the fixed disk 15 through a first screw 14, the first screw 14 is provided with a plurality of equidistant circumferential arrays, wherein, six are taken as the preferred scheme, the top surface of the base 13 is fixedly connected with the installation seat 8 through a second screw 12, the second screw 12 is provided with a plurality of equidistant circumferential arrays, wherein, six are taken as the preferred scheme, the outer side surface of the installation seat 8 is sleeved with a floating ring 9, an elastic component is connected between the floating ring 9 and the installation seat 8, the floating ring 9 and the installation seat 8 are axially positioned through a cylindrical pin 16, the cylindrical pin 16 axially penetrates through the floating ring 9 and is fixedly inserted into the installation seat 8, the floating ring 9 can move up and down, the outer side surface of the floating ring 9 is sleeved with a positioning disk 10, one end of the positioning disk 10 close to the base 13 is fixedly connected to the installation seat 8 through a third screw 17, the third screw 17 is provided with a plurality of equidistant circumferential, and the other end of the positioning plate 10 is provided with a workpiece, wherein six are taken as preferable schemes.

In the above embodiment, the elastic members are provided in plural and arranged in an equidistant circumferential array.

The elastic component comprises a pressure spring 11 with the elastic direction designed in the axial direction, one end of the pressure spring 11 is fixedly connected with the mounting seat 8, and the other end of the pressure spring 11 is fixedly connected with the floating ring 9.

In the last embodiment, the mounting seat 8 is provided with a plurality of mounting grooves, one end of the mounting groove, in which the compression spring 11 is mounted, is fixedly mounted in the mounting groove, and the other end of the compression spring 11 is fixedly connected to the floating ring 9.

It should be noted that the floating ring 9 moves a small distance to press the expansion sleeve 6 under the action of the pressure spring 11, so that the workpiece is convenient to disassemble.

The top surface of the floating ring 9 is fixedly connected to the expansion sleeve 6, one part of the inner side surface of the expansion sleeve 6 is sleeved on the outer side surface of the mounting seat 8, the other part of the inner side surface of the expansion sleeve 6 inclines towards the outer side surface to form a conical surface and is sleeved on the outer side surface of the conical sleeve 3, the outer side surface of the conical sleeve 3 is matched with the conical surface on the inner side of the expansion sleeve 6, a workpiece is sleeved on the outer side surface of the expansion sleeve 6, and a small gap exists between the workpiece and the outer side surface.

In the above embodiment, the inner side of the conical sleeve 3 is designed in a stepped manner.

It should be noted that the expansion sleeve 6 generates micro-deformation to press the workpiece to stabilize the workpiece.

Fixedly connected with bolt on the 8 top surfaces of mount pad, the axial of bolt has cup jointed packing ring 4 and nut 1 in proper order, and the conical sleeve 3 of an axial roof pressure of a terminal surface of packing ring 4, the laminating of another terminal surface of packing ring 4 and nut 1, nut 1 and bolt adaptation and swivelling joint.

In the previous embodiment, the washer 4 is located inside the tapered sleeve 3, one end of the washer is pressed against the axial end face of the step, one part of the nut 1 is located inside the tapered sleeve 3, and one end of the nut is attached to the other end face of the washer 4, the retainer ring 2 is arranged at the opening of the tapered sleeve 3, and the retainer ring 2 is embedded inside the tapered sleeve 3 and is sleeved on the outer side face of the nut 1.

In the above embodiment, the inner side surface of the conical sleeve 3 is provided with a sliding groove, the top of the mounting seat 8 is fixedly connected with the key block 5, and the key block 5 is matched with the sliding groove and slides axially relative to the sliding groove.

In the above embodiment, the expanding sleeve 6 is fixedly connected with the retaining post 7, and the retaining post 7 is inserted into the expanding sleeve 6 in the direction perpendicular to the axial direction to strengthen the circumferential connection of the expanding sleeve 6.

The working principle and method of the embodiment are as follows:

when the device is used, the nut 1 is screwed, the nut 1 rotates and presses the gasket 4, the gasket 4 presses the conical sleeve 3, the outer conical surface of the conical sleeve 3 presses the inner conical surface of the expansion sleeve 6 to enable the expansion sleeve 6 to generate micro deformation, the expansion sleeve 6 expands outwards to reduce the gap between the workpiece and the expansion sleeve 6 and directly presses the workpiece, the expansion sleeve 6 does not generate radial displacement due to the limitation of the stop pillar 7, the workpiece placed on the positioning disc 10 is enabled to be more stable, the expansion sleeve 6 presses the floating ring 9 downwards, the floating ring 9 presses the pressure spring 11 under the limiting action of the cylindrical pin 16, and the pressure spring 11 is pressed.

After the use, the nut 1 is loosened, the expansion sleeve 6 is restored to the original state and is not pressed against the workpiece, the expansion sleeve 6 presses the conical sleeve 3, the conical sleeve 3 presses the gasket 4 to return to the original position, the pressure spring 11 is restored to the original state to press the floating ring 9, the floating ring 9 presses the expansion sleeve 6 to generate small-distance displacement, and the workpiece is convenient to disassemble.

Compared with the prior art, the embodiment has the following beneficial effects:

It will be understood by those skilled in the art that any combination of the elements of the present invention, including the summary and detailed description of the invention provided in the foregoing description and illustrated in the accompanying drawings, is not to be considered limiting in scope and in order to make the description more concise, and not to describe every element of the combination. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A manual gear hobbing expansion device is characterized by comprising a fixed disc, a base, an installation seat and a positioning disc, wherein the base is fixedly installed on the fixed disc through a first screw, the top surface of the base is fixedly connected with the installation seat through a second screw, a floating ring is sleeved on the outer side surface of the installation seat, an elastic assembly is connected between the floating ring and the installation seat, the floating ring and the installation seat are axially positioned through a cylindrical pin, the outer side surface of the floating ring is sleeved with the positioning disc, one end, close to the base, of the positioning disc is fixedly connected onto the installation seat through a third screw, and a workpiece is installed at the other end of the positioning disc;

2. The hobbing manual expansion device of claim 1, wherein: the first screw, the second screw and the third screw are all provided with a plurality of screws and are arranged in an equidistant circumferential array.

3. The hobbing manual expansion device of claim 1, wherein: the elastic component is provided with a plurality of elastic components which are arranged in an equidistant circumferential array.

4. The hobbing manual expansion device of claim 1, wherein: the elastic assembly comprises a pressure spring with the elastic direction designed in the axial direction, one end of the pressure spring is fixedly connected with the mounting seat, and the other end of the pressure spring is fixedly connected to the floating ring.

5. The hobbing manual expansion device of claim 1, wherein: the cylindrical pin penetrates through the floating ring in the axial direction and then is fixedly inserted into the mounting seat, and the floating ring can move up and down.

6. The hobbing manual expansion device of claim 1, wherein: the tapered sleeve is characterized in that a sliding groove is formed in the inner side face of the tapered sleeve, a key block is fixedly connected to the top of the mounting seat, and the key block is matched with the sliding groove and slides axially relative to the sliding groove.

7. The hobbing manual expansion device of claim 1, wherein: the inner side surface of the conical sleeve is designed in a stepped manner, the washer is positioned on the inner side of the conical sleeve, one end of the washer is pressed against the axial end surface of the step, one part of the nut is positioned on the inner side of the conical sleeve, one end of the nut is attached to the other end surface of the washer, a retainer ring is arranged at the opening of the conical sleeve, and the retainer ring is embedded into the conical sleeve and is sleeved on the outer side surface of the nut.

8. The hobbing manual expansion device of claim 1, wherein: the expansion sleeve is fixedly connected with a retaining column, the retaining column is inserted into the expansion sleeve in the direction perpendicular to the axial direction, and the circumferential connection of the expansion sleeve is enhanced.