CN214639104U

CN214639104U - Expanding device for cross wedge rolling intermediate shaft

Info

Publication number: CN214639104U
Application number: CN202120312966.4U
Authority: CN
Inventors: 张淏威
Original assignee: Zunhua Huitong Machinery Co ltd
Current assignee: Zunhua Huitong Machinery Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-11-09
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to the technical field of automobile part processing, in particular to an expanding device for a cross wedge rolling intermediate shaft, which comprises a base and a mounting frame, wherein the upper end of the base is provided with the mounting frame, the outer side end part of the mounting frame is fixedly connected with a hydraulic cylinder, the other end of the hydraulic cylinder is fixedly connected with a shaft coupler, the other end of the shaft coupler is fixedly connected with a push rod, the outer side of the push rod is provided with an expander, the outer side of the expander is fixedly connected with a connecting frame through a bolt, and the other end of the connecting frame is fixedly connected with the mounting frame; the utility model discloses in, through the expander that sets up, push head, reset spring, spout and fixing bolt, treat the hole enlargement and accomplish the back, reset spring is under self spring action, to the expansion portion of the tensile expander of inboard, and the expansion portion resets under the spring action of self shrink simultaneously, can prevent that the card from appearing in the expansion portion and pausing, makes the expander can reset smoothly, can adjust the distance between two mounting brackets simultaneously, makes the device be applicable to the hole enlargement of different length axles.

Description

Expanding device for cross wedge rolling intermediate shaft

Technical Field

The utility model relates to an automobile parts processing technology field specifically is a hole enlargement device for cross wedge rolling jackshaft.

Background

The wedge cross rolling is a new steel rolling technology appeared in 1961, it is suitable for rolling variable section solid of revolution, two rolls with wedge hole type, rotate in the same direction along the advancing direction of the wedge, roll the blank into variable section solid of revolution gradually, the wedge hole type is wedged, formed, finish three sections to form, equipped with the cutter after finishing section, the roll is rotated once, can roll one or a pair of, the function of the cutter is to cut off the stub bar or separate into two pieces to the pair, the wedge cross rolling can produce various solid or hollow ladder-like shaft parts, the ladder part can be cylindrical, conical or spherical, can be single step, multiple steps and vertical step, etc., and can roll out horizontal groove, rolled piece, etc., this process can both produce the part blank, can supply the blank for further plastic working, can also realize the little chip or finish machining without chip.

The jackshaft is a piece of axle in the motor transmission, and axle itself is as an organic whole with the gear, and the effect is with one with two hub connections, selects through the transform of gear level and meshes with different gears, makes two axles can output different rotational speeds, turn to and the moment of torsion, and the production of jackshaft adopts the cross wedge rolling technology mostly.

The diameter expanding device for the cross wedge rolling intermediate shaft aims at solving the problems that the diameter expanding treatment of the intermediate shaft end is needed in the processing process of the intermediate shaft, a reset mechanism is not arranged in a common diameter expanding machine, and a conical head is easy to be clamped with a workpiece after diameter expanding, so that the resetting of equipment is difficult, the diameter expanding quality is poor, and the precision of a product is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hole enlargement device for cross wedge rolling jackshaft to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the expanding device for the cross wedge rolling intermediate shaft comprises a base and a mounting frame, wherein the mounting frame is arranged at the upper end of the base, a hydraulic cylinder is fixedly connected to the outer end of the mounting frame, a coupler is fixedly connected to the other end of the hydraulic cylinder, a push rod is fixedly connected to the other end of the coupler, an expander is arranged on the outer side of the push rod, a connecting frame is fixedly connected to the outer side of the expander through bolts, and the other end of the connecting frame is fixedly connected with the mounting frame.

Preferably, the outer side end of the push rod is fixedly connected with a push head, the outer side of the push head is fixedly connected with a return spring, and the other end of the return spring is fixedly connected with the expander.

Preferably, the middle part of the upper end of the base is fixedly connected with a supporting table, the upper end of the supporting table is fixedly connected with a shaft support, and the shaft support is in a semicircular ring shape and is symmetrically distributed at the upper end of the supporting table.

Preferably, the expander includes main part and expansion portion, the main part is the ring shape setting, and passes through bolt and link fixed connection in the main part outside, the expansion portion is that 6 the same flexure strips encircle to form, and the outer terminal surface and the hole of expansion portion all are coniform setting.

Preferably, 4 chutes are symmetrically formed in the upper end of the base, fixing bolts are arranged in the chutes, and the base and the mounting frame are fixedly connected through the fixing bolts.

Preferably, the number of the return springs fixedly connected with the outer side of the pushing head is 6, and the return springs are distributed around the outer side of the pushing head.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, after the diameter expansion is completed, the hydraulic cylinder contracts to drive the push rod to move outwards, the push rod drives the push head to reset, the reset spring stretches the expansion part of the expander inwards under the action of self elasticity, and the expansion part resets under the action of self-contracted elasticity, so that the expansion part can be prevented from being blocked and the expander can be reset smoothly;

2. the utility model discloses in, through spout and the fixing bolt that sets up, the spout has been seted up to base upper end symmetry, the inside fixing bolt that is equipped with of spout, and base and mounting bracket pass through fixing bolt and realize fixed connection, can adjust the distance between two mounting brackets, make the device be applicable to the hole enlargement of different length axles.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of the base of the present invention;

FIG. 3 is a schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 4 is a schematic view of the mounting structure of the return spring of the present invention;

fig. 5 is a left side view of the overall structure of the dilator of the present invention.

In the figure: the device comprises a base 1, a mounting frame 2, a hydraulic cylinder 3, a coupler 4, a push rod 5, an expander 6, a connecting frame 7, a pushing head 8, a return spring 9, a supporting platform 10, a shaft support 11, a main body part 12, an expansion part 13, a sliding groove 14 and a fixing bolt 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a hole enlargement device for cross wedge rolling jackshaft, includes base 1 and

mounting bracket

2, and 1 upper end of base is equipped with

mounting bracket

2, and 2 outside end fixedly connected with pneumatic cylinders 3 of mounting bracket, 3 other end fixedly connected with shaft coupling 4 of pneumatic cylinder, 4 other end fixedly connected with push rod 5 of shaft coupling, the 5 outsides of push rod are equipped with expander 6, and bolt fixedly connected with link 7 is passed through in the 6 outsides of expander, the 7 other ends of link and 2 fixed connection of mounting bracket.

The outer side end of the push rod 5 is fixedly connected with a push head 8, the outer side of the push head 8 is fixedly connected with a reset spring 9, the other end of the reset spring 9 is fixedly connected with an expander 6, the middle part of the upper end of the base 1 is fixedly connected with a saddle 10, the upper end of the saddle 10 is fixedly connected with a shaft bracket 11, the shaft bracket 11 is used for bearing and fixing an intermediate shaft, the shaft bracket 11 is arranged at the upper end of the saddle 10 in a semicircular ring shape and is symmetrically distributed at the upper end of the saddle 10, the expander 6 comprises a main body part 12 and an expanding part 13, the main body part 12 is arranged in a circular ring shape, the outer side of the main body part 12 is fixedly connected with a connecting frame 7 through bolts, the expanding part 13 is formed by surrounding 6 same elastic sheets, the outer end surface and an inner hole of the expanding part 13 are both arranged in a conical shape, the upper end of the base 1 is symmetrically provided with 4 sliding grooves 14, fixing bolts 15 are arranged in the sliding grooves 14, the base 1 and the mounting frame 2 are fixedly connected through the fixing bolts 15, the setting can adjust the distance between the two mounting frames 2, the device is suitable for expanding shafts with different lengths, the number of the return springs 9 fixedly connected with the outer side of the push head 8 is 6, and the return springs 9 are distributed on the outer side of the push head 8 in a surrounding manner.

The working process is as follows: electrical appliances are external power supplies, an intermediate shaft to be expanded is placed at the upper end of a shaft support 11, a hydraulic cylinder 3 is started to carry out pre-compression, the center of a push head 8 is coincided with the axis, the hydraulic cylinder 3 operates to push a push rod 5 to contract inwards, the push rod 5 presses an expansion part 13 of an expander 6 outwards to expand the elastic sheet of the expansion part 13 uniformly outwards, so that the shaft hole can be expanded, after the expansion is completed, the hydraulic cylinder 3 contracts to drive the push rod 5 to move outwards, the push rod 5 drives the push head 8 to reset, a reset spring 9 stretches the expansion part 13 of the expander 6 inwards under the action of self elasticity, the expansion part 13 resets under the action of the self-contraction elasticity, the expansion part 13 can be prevented from being stuck, the expander 6 can be reset smoothly, 4 sliding grooves 14 are symmetrically formed in the upper end of a base 1, fixing bolts 15 are arranged inside the sliding grooves 14, and the base 1 and an installation frame 2 are fixedly connected through the fixing bolts 15, the arrangement can adjust the distance between the two mounting frames 2, so that the device is suitable for expanding shafts with different lengths.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hole enlargement device for cross wedge rolling jackshaft, includes base (1) and mounting bracket (2), its characterized in that: base (1) upper end is equipped with mounting bracket (2), mounting bracket (2) outside end fixedly connected with pneumatic cylinder (3), pneumatic cylinder (3) other end fixedly connected with shaft coupling (4), shaft coupling (4) other end fixedly connected with push rod (5), the push rod (5) outside is equipped with expander (6), expander (6) outside is through bolt fixedly connected with link (7), link (7) other end and mounting bracket (2) fixed connection.

2. The expanding device for a cross wedge rolling intermediate shaft according to claim 1, wherein: the outer side end of the push rod (5) is fixedly connected with a push head (8), the outer side of the push head (8) is fixedly connected with a return spring (9), and the other end of the return spring (9) is fixedly connected with the expander (6).

3. The expanding device for a cross wedge rolling intermediate shaft according to claim 1, wherein: the base is characterized in that a supporting platform (10) is fixedly connected to the middle of the upper end of the base (1), a shaft support (11) is fixedly connected to the upper end of the supporting platform (10), and the shaft support (11) is in the shape of a semicircular ring and is symmetrically distributed on the upper end of the supporting platform (10).

4. The expanding device for a cross wedge rolling intermediate shaft according to claim 1, wherein: expander (6) include main part (12) and expansion portion (13), main part (12) set up for the ring shape, and main part (12) outside passes through bolt and link (7) fixed connection, expansion portion (13) are that 6 the same flexure strips encircle to form, and the outer terminal surface and the hole of expansion portion (13) all are coniform setting.

5. The expanding device for a cross wedge rolling intermediate shaft according to claim 1, wherein: 4 spout (14) have been seted up to base (1) upper end symmetry, spout (14) inside is equipped with fixing bolt (15), and base (1) and mounting bracket (2) realize fixed connection through fixing bolt (15).

6. The expanding device for a cross wedge rolling intermediate shaft according to claim 2, wherein: the number of the return springs (9) fixedly connected with the outer side of the push head (8) is 6, and the return springs (9) are distributed on the outer side of the push head (8) in a surrounding manner.