CN218426024U - Asymmetric pressure angle worm gear hobbing cutter - Google Patents

Abstract

The utility model belongs to the technical field of the cutter, especially, be an asymmetric pressure angle worm gear hobbing cutter, including hobbing cutter body and arbor, the cavity has been seted up to hobbing cutter body's inside below, the axle bed has been installed in the inside below of cavity insertion, the bottom of axle bed is equipped with the arbor, be fixed with the screw rod in the middle of the inside of axle bed, the outer wall sliding connection of screw rod has the plectane, the bottom of plectane is equipped with four evenly around the A-frame that distributes, the spout has been seted up to A-frame's inside, A-frame has the fixed pin through spout sliding connection, the top outer wall threaded connection of screw rod has the nut, four evenly around the pinhole that distributes are seted up to the inner wall of cavity, the outer wall cover of screw rod has the spring, and the spring is located the below of plectane, when hobbing cutter needs to be used, often need assemble hobbing cutter and hobbing cutter axle, but current hobbing cutter is not convenient for assembling for most, thereby staff's time and physical power can be consumeed, the problem of staff's use experience has been reduced.

Description

Asymmetric pressure angle worm gear hob

Technical Field

The utility model belongs to the technical field of the cutter, concretely relates to asymmetric pressure angle worm gear hobbing cutter.

Background

The hob is a gear machining tool with cutter teeth arranged along a cylinder or a cone in a spiral line, and is used for machining cylindrical gears, worm gears and other cylindrical toothed workpieces (see gear machining and gears) according to a generating method. When machining, the hob is equivalent to a spiral gear with a large spiral angle, the number of teeth is the number of heads of the hob, the workpiece is equivalent to another spiral gear, the hob is in space meshing with the other spiral gear according to a pair of spiral gears, the hob rotates at a fixed speed ratio, and the tooth shapes of the hob are enveloped by the tooth shapes of the hob teeth at adjacent positions cut in sequence. According to different purposes, the hob is divided into a gear hob, a worm gear hob, a non-involute generating hob, a fixed hob and the like, when the hob needs to be used, the hob and a hob shaft are often required to be assembled, but most of the existing hobs are inconvenient to assemble, so that the time and physical strength of workers can be consumed, and the use experience of the workers is reduced; in view of the problems exposed during the use of the current cutting tools, there is a need for improvement and optimization of the cutting tools.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides an asymmetric pressure angle worm gear hobbing cutter has the hobbing cutter of being convenient for and arbor fast assembly and to the inside dirt-proof characteristics of hobbing cutter.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an asymmetric pressure angle worm gear hobbing cutter, includes hobbing cutter body and arbor, the cavity has been seted up to hobbing cutter body's inside below, the axle bed is installed in the inside below insertion of cavity, the bottom of axle bed is equipped with the arbor, be fixed with the screw rod in the middle of the inside of axle bed, the outer wall sliding connection of screw rod has the plectane, the bottom of plectane is equipped with four evenly around the A-frame that distributes, the spout has been seted up to the inside of A-frame, the A-frame has the fixed pin through spout sliding connection, the top outer wall threaded connection of screw rod has the nut, four evenly around the pinhole that distributes are seted up to the inner wall of cavity.

As the utility model discloses an optimal technical scheme of asymmetric pressure angle worm gear hobbing cutter, the outer wall cover of screw rod has the spring, and the spring is located the below of plectane.

As the utility model discloses an optimal technical scheme of asymmetric pressure angle worm gear hobbing cutter, the accent has been seted up to the inside top of hobbing cutter body, and the accent is linked together with the cavity, the sealing plug is installed at the top of hobbing cutter body, and the bottom of sealing plug inserts to install to the inside top of accent.

As the utility model discloses an optimal technical scheme of asymmetric pressure angle worm gear hobbing cutter, contained angle between spout and the screw rod is fifteen degrees.

As the utility model discloses an optimal technical scheme of asymmetric pressure angle worm gear hobbing cutter, the sealing plug is the rubber buffer of rubber material.

As the utility model discloses an asymmetric pressure angle worm gear hobbing cutter preferred technical scheme, the fixed pin is close to the inside slot of having seted up of one end of A-frame.

As the utility model discloses an optimal technical scheme of asymmetric pressure angle worm gear hobbing cutter, axle bed and arbor are integrated into one piece.

Compared with the prior art, the beneficial effects of the utility model are that: when the nut is unscrewed, the circular plate is pushed to move upwards through the resilience of the spring to drive the triangular support, and the triangular support drives the fixing pin to contract inwards through the sliding groove; when the nut is screwed up, the circular plate is pushed to move downwards to drive the triangular support, and the triangular support drives the fixing pin to extend outwards through the sliding groove, so that the hob can be installed, fixed and detached only through one nut.

When the hob body is used, the sealing plug is installed to block the cavity hole, so that machining chips or dust are prevented from entering the cavity hole.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic structural view of the middle knife shaft of the present invention;

fig. 4 is a schematic structural view of a middle circular plate of the present invention;

in the figure: 1. a hob body; 2. a shaft seat; 3. a screw; 4. a circular plate; 5. a triangular bracket; 6. a chute; 7. a fixing pin; 8. a trench; 9. a nut; 10. a pin hole; 11. a cutter shaft; 12. a cavity; 13. a bore; 14. a sealing plug; 15. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides an asymmetric pressure angle worm gear hobbing cutter, including hobbing cutter body 1 and arbor 11, cavity 12 has been seted up to hobbing cutter body 1's inside below, the inside below of cavity 12 inserts installs axle bed 2, the bottom of axle bed 2 is equipped with arbor 11, be fixed with screw rod 3 in the middle of the inside of axle bed 2, the outer wall sliding connection of screw rod 3 has plectane 4, the bottom of plectane 4 is equipped with four evenly around the triangular support 5 that distributes, spout 6 has been seted up to the inside of triangular support 5, triangular support 5 has fixed pin 7 through spout 6 sliding connection, the top outer wall threaded connection of screw rod 3 has nut 9, four evenly around the pinhole 10 that distributes are seted up to the inner wall of cavity 12, in this embodiment, when installation hobbing cutter body 1, through inserting axle bed 2 inside cavity 12, clockwise turning up nut 9, nut 9 promotes plectane 4 and drives the downward movement of triangular support 5, triangular support 5 drives fixed pin 7 and outwards extends from the inner wall of axle bed 2 through spout 6, insert the inside of pinhole 10, and then install hobbing cutter body 1 and fix with axle bed 2.

Specifically, the outer wall cover of screw rod 3 has spring 15, and spring 15 is located the below of plectane 4, and when dismantling hobbing cutter body 1 in this embodiment, through anticlockwise rotation unscrewing nut 9, the pressure that kick-backs through spring 15 promotes plectane 4 and drives the upward motion of A-frame 5, and A-frame 5 drives fixed pin 7 through spout 6 and withdraws to the inner wall of axle bed 2, and then can take out axle bed 2 from cavity 12 is inside, separates hobbing cutter body 1 and axle bed 2.

Specifically, a cavity hole 13 is formed in the upper portion of the inner portion of the hob body 1, the cavity hole 13 is communicated with the cavity 12, in the embodiment, a sealing plug 14 is installed at the top of the hob body 1, the bottom of the sealing plug 14 is inserted into the upper portion of the inner portion of the cavity hole 13, and when the hob body 1 and the shaft seat 2 are disassembled and assembled, a hexagon socket sleeve is installed through a wrench and extends into the cavity hole 13, so that the nut 9 is adjusted; when the hob body 1 is used, the sealing plug 14 is installed to block the cavity hole 13, so that machining chips or dust are prevented from entering the cavity hole 13.

Specifically, an included angle between the chute 6 and the screw 3 is fifteen degrees, in the embodiment, the circular plate 4 drives the triangular bracket 5 when moving upwards, and the triangular bracket 5 drives the fixing pin 7 to contract inwards through the chute 6; when the circular plate 4 moves downwards, the triangular support 5 is driven, and the triangular support 5 drives the fixing pin 7 to extend outwards through the sliding groove 6.

Specifically, the sealing plug 14 is made of rubber, and rubber in the embodiment has the advantages of dust prevention, water prevention, wear resistance, tear resistance and aging resistance, so that the service life is prolonged.

Specifically, fixed pin 7 is close to the inside slot 8 that has seted up of one end of A-frame 5, when fixed pin 7 along 2 inner walls horizontal motions of axle bed in this embodiment, avoids causing the interference with A-frame 5 through slot 8.

Specifically, axle bed 2 and arbor 11 are integrated into one piece, reduce manufacturing cost in this embodiment, and improve firm degree and the bearing capacity between axle bed 2 and the arbor 11.

The utility model discloses a theory of operation and use flow: when the hob body 1 and the shaft seat 2 are installed, the shaft seat 2 is inserted into the cavity 12, the inner hexagonal sleeve is installed by a wrench and extends into the cavity hole 13, the nut 9 is screwed by clockwise rotation, the nut 9 pushes the circular plate 4 to drive the triangular bracket 5 to move downwards, the triangular bracket 5 drives the fixing pin 7 to extend outwards from the inner wall of the shaft seat 2 through the sliding groove 6 and is inserted into the pin hole 10, and then the hob body 1 and the shaft seat 2 are installed and fixed; when dismantling hobbing cutter body 1, through anticlockwise rotation unscrewing nut 9, the pressure that kick-backs through spring 15 promotes plectane 4 and drives the upward motion of A-frame 5, and A-frame 5 drives fixed pin 7 through spout 6 and withdraws to the inner wall of axle bed 2, and then can take out axle bed 2 from cavity 12 is inside, separates hobbing cutter body 1 and axle bed 2.

When the hob body 1 is used, the sealing plug 14 is installed to block the cavity hole 13, so that machining chips or dust are prevented from entering the cavity hole 13.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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 (7)

1. The utility model provides an asymmetric pressure angle worm gear hobbing cutter, includes hobbing cutter body (1) and arbor (11), its characterized in that: cavity (12) have been seted up to the inside below of hobbing cutter body (1), the inside below of cavity (12) is inserted and is installed axle bed (2), the bottom of axle bed (2) is equipped with arbor (11), be fixed with screw rod (3) in the middle of the inside of axle bed (2), the outer wall sliding connection of screw rod (3) has plectane (4), the bottom of plectane (4) is equipped with four evenly around the A-frame (5) that distributes, spout (6) have been seted up to the inside of A-frame (5), A-frame (5) have fixed pin (7) through spout (6) sliding connection, the top outer wall threaded connection of screw rod (3) has nut (9), four evenly around pinhole (10) that distribute are seted up to the inner wall of cavity (12).

2. An asymmetric pressure angle worm-gear hob as in claim 1 wherein: the outer wall of the screw rod (3) is sleeved with a spring (15), and the spring (15) is positioned below the circular plate (4).

3. An asymmetric pressure angle worm gear hob as claimed in claim 1, characterized in that: cavity hole (13) has been seted up to the inside top of hobbing cutter body (1), and cavity hole (13) are linked together with cavity (12), sealing plug (14) is installed at the top of hobbing cutter body (1), and inserts the top of installing to cavity hole (13) inside top of sealing plug (14).

4. An asymmetric pressure angle worm gear hob as claimed in claim 1, characterized in that: and an included angle between the sliding groove (6) and the screw rod (3) is fifteen degrees.

5. An asymmetric pressure angle worm-gear hob according to claim 3, characterized in that: the sealing plug (14) is a rubber plug made of rubber.

6. An asymmetric pressure angle worm gear hob as claimed in claim 1, characterized in that: the fixing pin (7) is close to one end of the triangular support (5) and is internally provided with a groove (8).

7. An asymmetric pressure angle worm-gear hob as in claim 1 wherein: the shaft seat (2) and the cutter shaft (11) are integrally formed.

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