阅读说明：本技术 导向套热镦机及其热镦方法 (Guide sleeve hot heading machine and hot heading method thereof ) 是由 李亮 张袁寿 于 2020-12-31 设计创作，主要内容包括：一种导向套热镦机,包括机架,机架上热镦台,热镦台上固定芯模,芯模外设有外模,芯模与外模之间的环形空间为热镦加工空间,芯模外设有水平定位套,水平定位套固定在热镦台上,水平定位套的顶部固定竖直定位环,竖直定位环的内边缘压在外模的上表面,热镦加工空间的上方设有上模,上模固定连接在液压缸的活塞端的下端。相对于现有技术,本发明的技术效果为,本发明的热镦环境为无氧环境,工件不会氧化、脱皮,尺寸可以比较精确,能进行精确热镦加工。(The utility model provides a uide bushing hot heading machine, includes the frame, hot heading platform in the frame, fixed mandrel on the hot heading platform, the mandrel is equipped with the external mold outward, the annular space between mandrel and the external mold is hot-heading process space, be equipped with the horizontal position cover outside the mandrel, the horizontal position cover is fixed on the hot heading platform, vertical holding ring is fixed at the top of horizontal position cover, the inward flange pressure of vertical holding ring is at the upper surface of external mold, the top in hot-heading process space is equipped with the mould, go up the lower extreme of mould fixed connection at the piston end of pneumatic cylinder. Compared with the prior art, the invention has the technical effects that the hot heading environment is an oxygen-free environment, the workpiece cannot be oxidized and peeled, the size can be relatively accurate, and the accurate hot heading processing can be carried out.)

1. A guide sleeve hot heading machine comprises a machine frame (10), a hot heading table (20) is arranged on the machine frame (10), a core die (23) is fixed on the hot heading table (20), an outer die (24) is arranged outside the core die (23), an annular space between the core die (23) and the outer die (24) is a hot heading processing space (25), a horizontal positioning sleeve (26) is arranged outside the core die (23), the horizontal positioning sleeve (26) is fixed on the hot heading table (20), a vertical positioning ring (27) is fixed at the top of the horizontal positioning sleeve (26), the inner edge of the vertical positioning ring (27) is pressed on the upper surface of the outer die (24), an upper die (28) is arranged above the hot heading processing space (25), the upper die (28) is fixedly connected to the lower end of a piston end (72) of a hydraulic cylinder, the hydraulic cylinder is arranged up and down, a cylinder body end (71) of the hydraulic cylinder is fixedly connected to the machine frame (10), and the upper die, the method is characterized in that:

the upper surface of the horizontal positioning sleeve (26) is fixedly connected with the lower end of a vertical rod (48), the vertical rod (48) is vertically arranged, the upper end of the vertical rod (48) is fixedly connected with a connecting ring (49), the connecting ring (49) is horizontally arranged, the outer surface of the connecting ring (49) is fixedly connected with a sealing cover (41), the sealing cover (41) extends downwards until being fixed on the ground (99), and a vent pipe (45) is arranged at the position of the connecting part of the sealing cover (41) and the ground;

the space between the connecting ring (49) and the vertical positioning ring (27) is a passage for the workpiece to pass through;

except for an escape channel and a vent pipe (45) between the connecting ring (49) and the upper die, the space in the sealing cover (41) is a closed space, and the air pressure in the sealing cover (41) is greater than the atmospheric pressure;

an intermediate frequency table (31) is further arranged on the ground, one side of the intermediate frequency table (31) is fixed with the intermediate frequency furnace (30), the other side of the intermediate frequency table (31) is provided with a spare workpiece station (32), and the intermediate frequency furnace (30), the intermediate frequency table (31) and the spare workpiece station (32) are all positioned on the inner side of the sealing cover (41);

two operation channels (43) are arranged on the sealing cover (41), the operation channels (43) extend inwards, and the end parts of the operation channels are operation gloves.

2. The guide sleeve hot heading machine as claimed in claim 1, wherein: the upper part (411) of the sealing cover (41) is made of high-temperature-resistant cloth.

3. The guide sleeve hot heading machine as claimed in claim 1, wherein: the upper part (411) of the sealing cover (41) is a high-temperature-resistant cloth sealing cover (41) which is a soft cover.

4. The guide sleeve hot heading machine as claimed in claim 1, wherein: the lower part (412) of the sealing cover (41) is made of transparent plastic cloth.

5. A hot heading method using the guide bush hot heading machine according to claim 1, characterized in that: when in use, the method comprises the following steps:

s1, selecting a proper core mold (23) and a proper outer mold (24), and fixing the core mold and the outer mold;

derusting and oiling a workpiece, and placing the workpiece at a standby workpiece station (32) for standby;

s2, the upper die (28) is moved to the high position, the door of the intermediate frequency furnace (30) is opened, carbon dioxide is continuously introduced from the vent pipe (45), and air in the sealing cover (41) escapes from the space between the sealing cover (41) and the upper die;

s3, extending two hands into the two operation channels (43), opening a door of the intermediate frequency furnace (30), placing a workpiece (90) in the intermediate frequency furnace (30) from the standby workpiece station (32), closing the door of the intermediate frequency furnace (30), heating the workpiece (90) by the intermediate frequency furnace (30), and gasifying and escaping oil on the surface of the workpiece during heating;

s4, after heating, extending two hands into the two operation channels (43), opening the door of the intermediate frequency furnace (30), placing the workpiece (90) into the hot heading processing space (25) by using a holding tool, and closing the door of the intermediate frequency furnace (30);

s5, descending the upper die (28) through the hydraulic cylinder to perform hot heading operation;

in the above steps S1-S5, the carbon dioxide is continuously introduced into the vent pipe (45).

Technical Field

The invention relates to a guide sleeve hot heading machine and a hot heading method thereof.

Background

At present, as shown in fig. 1, one end of the guide sleeve 91 expands outwards to form an outer convex portion 92, which is an important component of the hydraulic bracket, mainly used for telescopic guidance of the hydraulic bracket, and simultaneously bears the influence of external load on lateral force, bending, vibration and the like formed by the guide pillar, and simultaneously plays a role in sealing. At present, the hot heading machine is generally used for processing.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: when a hot header machine tool is used for processing, a workpiece is easy to oxidize and peel, and the dimension is not accurate, so that only rough processing and fine processing can be carried out.

If the hot heading workshop is provided with an oxygen-free workshop, the difficulty is too high (the airtightness of the workshop is poor) and the workshop is required to work by people (people need oxygen for breathing), so that the operation is not practical.

Therefore, how to design an oxygen-free hot heading environment is a technical problem.

The technical scheme of the invention is as follows:

a guide sleeve hot heading machine comprises a machine frame 10, a hot heading table 20 is arranged on the machine frame 10, a core die 23 is fixed on the hot heading table 20, an outer die 24 is arranged outside the core die 23, an annular space between the core die 23 and the outer die 24 is a hot heading processing space 25, a horizontal positioning sleeve 26 is arranged outside the core die 23, the horizontal positioning sleeve 26 is fixed on the hot heading table 20, a vertical positioning ring 27 is fixed at the top of the horizontal positioning sleeve 26, the inner edge of the vertical positioning ring 27 is pressed on the upper surface of the outer die 24, an upper die 28 is arranged above the hot heading processing space 25, the upper die 28 is fixedly connected to the lower end of a piston end 72 of a hydraulic cylinder, the hydraulic cylinder is arranged up and down, a cylinder body end 71 of the hydraulic cylinder is fixedly connected to the machine frame 10, the upper die 28 is an executing piece for hot heading operation, the upper surface of the horizontal positioning sleeve 26 is fixedly connected with the lower end of, the outer surface of the connecting ring 49 is fixedly connected with the sealing cover 41, the sealing cover 41 extends downwards until being fixed on the ground 99, and the sealing cover 41 is provided with a vent pipe 45 at the position of the connection position of the sealing cover 41 and the ground. The space between the connection ring 49 and the vertical positioning ring 27 is a passage through which the workpiece passes. Except for the escape passage between the connection ring 49 and the upper die and the vent pipe 45, the space inside the seal cover 41 is a closed space, and the air pressure inside the seal cover 41 is greater than the atmospheric pressure. An intermediate frequency table 31 is further arranged on the ground, one side of the intermediate frequency table 31 is fixed with the intermediate frequency furnace 30, the other side of the intermediate frequency table 31 is a spare workpiece station 32, and the intermediate frequency furnace 30, the intermediate frequency table 31 and the spare workpiece station 32 are all located on the inner side of the sealing cover 41. Two operation channels 43 are arranged on the sealing cover 41, the operation channels 43 extend inwards, and the end parts of the operation channels 43 are operation gloves.

The upper part 411 of the sealing cover 41 is made of high temperature resistant cloth.

The upper part 411 of the sealing cover 41 is made of high temperature resistant cloth, and the sealing cover 41 is a soft cover.

The lower portion 412 of the sealing cap 41 is a transparent plastic cloth.

A hot heading method using the guide sleeve hot heading machine comprises the following steps of:

s1, selecting a proper core mold 23 and a proper outer mold 24, and fixing the core mold 23 and the outer mold 24;

derusting and oiling a workpiece, and placing the workpiece at a standby workpiece station 32 for standby;

s2, the upper die 28 is put to the high position, the door of the intermediate frequency furnace 30 is opened, carbon dioxide is continuously introduced from the vent pipe 45, and air in the sealing cover 41 escapes from the space between the sealing cover 41 and the upper die;

s3, extending two hands into the two operation channels 43, opening a door of the intermediate frequency furnace 30, placing the workpiece 90 in the intermediate frequency furnace 30 from the spare workpiece station 32, closing the door of the intermediate frequency furnace 30, heating the workpiece 90 by the intermediate frequency furnace 30, and gasifying and escaping oil on the surface of the workpiece during heating;

s4, after heating, extending two hands into the two operation channels 43, opening the door of the intermediate frequency furnace 30, placing the workpiece 90 into the hot heading processing space 25 by using a holding tool, and closing the door of the intermediate frequency furnace 30;

s5, descending the upper die 28 through the hydraulic cylinder to perform hot heading operation;

in the above step, the carbon dioxide is continuously introduced into the vent pipe 45.

The technical scheme of the invention is as follows:

compared with the prior art, the invention has the technical effects that the hot heading environment is an oxygen-free environment, the workpiece cannot be oxidized and peeled, the size can be relatively accurate, and the accurate hot heading processing can be carried out.

Drawings

FIG. 1 is a schematic view of a prior art guide sleeve.

FIG. 2 is a schematic diagram of the present invention.

FIG. 3 is an enlarged schematic view of a hot heading region.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, in the present invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, are only used for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have this particular orientation, be configured to operate in a particular orientation, and thus should not be construed as limiting the present invention.

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

A guide sleeve hot heading machine comprises a machine frame 10, a hot heading table 20 is arranged on the machine frame 10, a core die 23 is fixed on the hot heading table 20, an outer die 24 is arranged outside the core die 23, an annular space between the core die 23 and the outer die 24 is a hot heading machining space 25, a horizontal positioning sleeve 26 is arranged outside the core die 23, the horizontal positioning sleeve 26 is fixed on the hot heading table 20, a vertical positioning ring 27 is fixed at the top of the horizontal positioning sleeve 26, and the inner edge of the vertical positioning ring 27 is pressed on the upper surface of the outer die 24.

An upper die 28 is arranged above the hot heading processing space 25, the upper die 28 is fixedly connected to the lower end of a piston end 72 of a hydraulic cylinder, the hydraulic cylinder is arranged up and down, a cylinder body end 71 of the hydraulic cylinder is fixedly connected to the rack 10, and the upper die 28 is an executive part for performing hot heading operation.

The upper surface of horizontal position sleeve 26 links firmly the lower extreme of montant 48, and montant 48 sets up vertically, and the upper end of montant 48 links firmly go-between 49, and go-between 49 level sets up, and the surface of go-between 49 links firmly sealed cowling 41, and sealed cowling 41 downwardly extending is until fixing on ground 99, and sealed cowling 41 is equipped with breather pipe 45 in its position with the ground junction.

The space between the connection ring 49 and the vertical positioning ring 27 is a passage through which the workpiece passes.

Except for the escape passage between the connection ring 49 and the upper die and the vent pipe 45, the space inside the seal cover 41 is a closed space, and the air pressure inside the seal cover 41 is greater than the atmospheric pressure.

An intermediate frequency table 31 is further arranged on the ground, an intermediate frequency furnace 30 (heating furnace) is fixed on one side of the intermediate frequency table 31, a standby workpiece station 32 is arranged on the other side of the intermediate frequency table 31, and the intermediate frequency furnace 30, the intermediate frequency table 31 and the standby workpiece station 32 are all located on the inner side of the sealing cover 41.

The sealing cover 41 is provided with two operation channels 43, the operation channels 43 extend inwards, and the end parts of the operation channels 43 are operation gloves (not shown in the figure).

In order to prevent the upper mold 28 from damaging the sealing cover 41, the upper portion 411 of the sealing cover 41 is made of a high temperature resistant cloth (e.g., a fire-proof, anti-siphon and waterproof cloth disclosed in patent publication No. CN 204426818U).

For convenience of operation, the sealing cover 41 is a soft cover, such as plastic cloth, and the cost is low.

For ease of viewing, the lower portion 412 of the sealing cap 41 is a clear plastic cloth.

The working principle is as follows:

when the utility model is used, the utility model can be used,

s1, selecting a proper core mold 23 and a proper outer mold 24, and fixing the core mold 23 and the outer mold 24;

and derusting and oiling the workpiece, and placing the workpiece at a standby workpiece station 32 for standby.

S2, the upper mold 28 is brought to the high position, the door of the intermediate frequency furnace 30 is opened, carbon dioxide is continuously introduced through the vent pipe 45 (see arrow a), and the air in the seal cover 41 escapes from the space between the seal cover 41 and the upper mold (see arrow b). The density of the carbon dioxide is greater than that of the air, so that the air can escape conveniently.

S3, extending two hands into the two operation channels 43, opening a door of the intermediate frequency furnace 30, placing the workpiece 90 in the intermediate frequency furnace 30 from the standby workpiece station 32, closing the door of the intermediate frequency furnace 30, heating the workpiece 90 by the intermediate frequency furnace 30, and gasifying and escaping oil on the surface of the workpiece during heating.

S4, after the heating is completed, the two hands are inserted into the two operation passages 43, the door of the intermediate frequency furnace 30 is opened, the workpiece 90 is placed in the hot heading processing space 25 by using the holding tool, and the door of the intermediate frequency furnace 30 is closed.

And S5, descending the upper die 28 through the hydraulic cylinder to perform hot heading operation.

In the above steps S1-S5, the carbon dioxide is continuously introduced into the vent pipe 45.

The inventor considers that the sealing cover 41 covers the whole frame 10 completely, however, the volume of the hot header is too large and the height can be 4 meters, and considering the sealing performance of the sealing cover, the sealing cover only covers the outer die, and the sealing volume is reduced.

In the scheme, after the workpiece is derusted, air (oxygen) is separated by outer oil, the workpiece is in an anaerobic environment from being placed in the standby workpiece station 32, the workpiece is wrapped by carbon dioxide during subsequent heating (in an intermediate frequency furnace), during the time from the intermediate frequency furnace to the hot upsetting processing space 25 in transit and during the hot upsetting of the hot upsetting processing space 25, the air (oxygen) is separated, so that the workpiece is not oxidized during the hot upsetting, the size of the hot upsetting processing space 25 can be consistent with that of a guide sleeve (a finished product), and the workpiece is directly subjected to hot upsetting forming and can be precisely processed.

See the prior art for additional details.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.