阅读说明：本技术 辗环生产工艺 (Production process of ring rolling ) 是由 饶涛 于 2020-04-30 设计创作，主要内容包括：本发明属于机械加工无缝金属环的技术领域,具体公开了辗环生产工艺包括以下步骤,坯料称重,准备坯料与坯料装料装置,将坯料依次进行称重；热处理,准备坯料加热装置,将坯料放入坯料加热装置进行加热；镦粗与开槽,准备坯料镦粗装置,将坯料放入坯料镦粗装置内进行镦粗与开槽；开孔,准备坯料开孔装置,将坯料放入坯料开孔装置内进行开孔；扩孔,准备辗环机,将坯料放入辗环机内进行扩孔；收集,准备辗环机输送装置坯料放入辗环机输送装置内进行回收。本发明的目的在于提供辗环生产工艺,以解决用于由于坯料厚度较大导致开孔困难的问题。(The invention belongs to the technical field of machining seamless metal rings, and particularly discloses a ring rolling production process which comprises the following steps of weighing a blank, preparing a blank and a blank charging device, and weighing the blank in sequence; heat treatment, preparing a blank heating device, and putting the blank into the blank heating device for heating; upsetting and slotting, namely preparing a blank upsetting device, and putting the blank into the blank upsetting device for upsetting and slotting; opening holes, namely preparing a blank hole opening device, and placing blanks into the blank hole opening device for opening holes; reaming, preparing a ring rolling machine, and putting the blank into the ring rolling machine for reaming; and collecting, namely preparing blanks of the conveying device of the ring rolling machine to be put into the conveying device of the ring rolling machine for recycling. The invention aims to provide a ring rolling production process to solve the problem of difficult hole opening caused by large blank thickness.)

1. The production process of the ring rolling is characterized by comprising the following steps:

s1: weighing, namely weighing the blanks in sequence, and selecting the blanks with the weight of 3-5 Kg;

s2: heat treatment, namely heating the blank screened in the step S1 at 800-1100 ℃ for 15-30 min;

s3: upsetting and slotting, namely preparing a blank upsetting device, and placing the blank which is subjected to the step S2 into the blank upsetting device for upsetting and slotting; the blank upsetting device comprises a first workbench, a supporting seat is fixedly connected to the first workbench, two telescopic mechanisms which stretch in the vertical direction are fixed to the supporting seat, and upsetting hammers for upsetting and extrusion rods for extrusion are fixedly connected to the free ends of the two telescopic mechanisms respectively;

s4: opening holes, namely placing the blanks subjected to the step S3 into a blank opening device for opening holes;

s5: reaming, namely, putting the blank subjected to the step S4 into a ring rolling machine for reaming;

s6: and (4) collecting, and putting the blanks obtained in the step S5 into a ring rolling machine conveying device for recycling.

2. The ring rolling production process according to claim 1, characterized in that: s1, a blank charging device is also used, and the blank charging device comprises a charging box, wherein the bottom of the charging box is fixedly connected with a hook, and the tail end of the hook faces downwards; the loading bin is characterized by further comprising a base, wherein the base is fixedly connected with a positioning cylinder which is connected with the hook in an inserting mode, and the base is further fixedly connected with a supporting column which is used for supporting the loading bin.

3. The ring rolling production process according to claim 1, characterized in that: s2, a blank heating device is further used, the blank heating device comprises a heating furnace, a conveying plate is fixedly connected to the inlet end of the heating furnace, a horizontally telescopic mechanism is fixedly connected to the conveying plate, and the telescopic end of the telescopic mechanism faces to one side close to the heating furnace.

4. The ring rolling production process according to claim 1, characterized in that: s3, a blank upsetting device is further used, a cooling mechanism is further fixedly connected to the supporting seat, and the output end of the cooling mechanism faces to the lower side of the upsetting hammer; the supporting seat is fixedly connected with a negative pressure fan.

5. The ring rolling production process according to claim 4, characterized in that: the negative pressure fan is embedded and fixedly connected to the supporting seat.

6. The ring rolling production process according to claim 1, characterized in that: the blank punching device is further used in the S4 and comprises a second workbench, a supporting seat is fixedly connected onto the second workbench, a telescopic mechanism which stretches in the vertical direction is fixed onto the supporting seat, and a free end of the telescopic mechanism is fixedly connected with a punching hammer.

7. The ring rolling production process according to claim 6, characterized in that: a supporting table is fixed to the second workbench under the hole-opening hammer, a through hole is formed in the supporting table, and the inner diameter of the through hole is larger than the outer diameter of the hole-opening hammer.

8. The ring rolling production process according to claim 1, characterized in that: the ring rolling machine is further used in the S5 and comprises a rack, a driving roller, a driven roller, a guide roller and a signal roller are respectively connected to the rack in a rotating mode, a supporting plate is fixedly connected to the rack, two slideway structures are fixedly connected to the supporting plate, square rods are fixedly connected to two axial ends of the signal roller, and the square rods are respectively connected to the slideway structures in a sliding mode.

9. The ring rolling production process according to claim 1, characterized in that: s6, a conveying mechanism for the ring rolling machine is further used, the conveying mechanism comprises a conveyor belt, a collecting box is arranged right below the output end of the conveyor belt, an opening is formed above the collecting box, and a plurality of parallel chains are fixedly connected between the opposite side walls of the collecting box.

10. The ring rolling production process according to claim 9, characterized in that: and the output end of the conveying belt is fixedly connected with a sliding plate for buffering blanks.

Technical Field

The invention belongs to the technical field of machining of seamless metal rings, and particularly discloses a ring rolling production process.

Background

The ring products have wide application in various fields of national economy, such as: flanges, gear rings, tires, etc. At present, the process flow of ring piece production is as follows: heating a steel blank, punching the heated blank by a press, and then sending the blank into a ring rolling machine for rolling by using a manipulator. The blank is rolled into a ring on a ring rolling machine.

For example, the Chinese invention patent (publication number: CN104985087A) discloses a forging method for producing an isolating ring, which sequentially comprises blanking, heating, upsetting, punching and reaming, ring rolling and normalizing, wherein the normalizing comprises a heating stage, a first heat preservation stage, a cooling stage, a second heat preservation stage and a cooling stage, the first heat preservation stage is 880 ℃ for 75min, and the second heat preservation stage is 450 ℃ for 150 min.

According to the production process, the blank is directly punched and reamed after upsetting is finished, although the blank has a small blank thickness after upsetting, the blank still has a cylindrical structure and high hardness, and the punching can be finished only by overcoming the large reaction force of the blank in the subsequent punching process.

Disclosure of Invention

The invention aims to provide a ring rolling production process to solve the problem of difficult hole opening caused by large blank thickness.

In order to achieve the purpose, the basic scheme of the invention is as follows: the ring rolling production process comprises the following steps:

s1: weighing, namely weighing the blanks in sequence, and selecting the blanks with the weight of 3-5 Kg;

s2: heat treatment, namely heating the blank screened in the step S1 at 800-1100 ℃ for 15-30 min;

s3: upsetting and slotting, namely preparing a blank upsetting device, and placing the blank which is subjected to the step S2 into the blank upsetting device for upsetting and slotting; the blank upsetting device comprises a first workbench, a supporting seat is fixedly connected to the first workbench, two telescopic mechanisms which are telescopic in the vertical direction are fixed to the supporting seat, and upsetting hammers for upsetting and extrusion rods for extrusion are fixedly connected to free ends of the two telescopic mechanisms respectively;

s4: opening holes, namely placing the blanks subjected to the step S3 into a blank opening device for opening holes;

s5: reaming, namely, putting the blank subjected to the step S4 into a ring rolling machine for reaming;

s6: and (4) collecting, and putting the blanks obtained in the step S5 into a ring rolling machine conveying device for recycling.

The working principle and the beneficial effects of the basic scheme are as follows: 1. in the step 1, raw materials are prepared and weighed so as to ensure the uniformity of raw materials of the product and avoid the problem that the processed product does not meet the requirements due to non-uniform quality. 2. The blank is subjected to heat treatment in the step 2, and the technical scheme improves the plastic processing performance of the blank by heating the blank at high temperature, improves the mechanical performance of the blank and eliminates the residual stress in the blank. 3. And (3) upsetting and grooving the blank in the step 3, so that the thickness of the blank is effectively reduced, and the blank is easy to open holes in the follow-up process. Compared with the prior art, the technical scheme completes upsetting and grooving under the same device, effectively simplifies the working process and improves the production efficiency. 4. In step 4, the blank is perforated so that the blank can be placed into a ring rolling machine for subsequent reaming. 5. The billet is reamed in step 5 to facilitate expansion of the inner and outer diameters of the billet, reduction of the radial thickness of the billet and final machining to the desired dimensions. 6. In step 6, the finished blanks are finally collected.

Compared with the prior art, the technical process adopts the blank charging device, the blank heating device, the blank upsetting device, the blank punching device, the ring rolling machine and the conveying mechanism for the ring rolling machine, and the whole process is controlled by machinery, so that the technical effects of accurate and automatic processing and labor and material resource saving are achieved.

Compared with the prior art, in the upsetting process before the hole opening process, the upsetting treatment is carried out on the blank, the grooving treatment is also carried out on the blank, the thickness of the hole opening position of the blank is effectively reduced, the difficulty of subsequent blank hole opening is effectively reduced, and the hole opening success rate is greatly improved.

Further, a blank charging device is used in S1, and the blank charging device includes a charging box, a hook is fixedly connected to the bottom of the charging box, and the end of the hook faces downward; the loading bin is characterized by further comprising a base, wherein the base is fixedly connected with a positioning cylinder which is connected with the hook in an inserting mode, and the base is further fixedly connected with a supporting column which is used for supporting the loading bin.

Has the advantages that: this technical scheme is through adopting the support column in order to realize the technological effect of putting charging box slope. Put through the slope of charging box, make the interior blank of charging box can be unified concentrate on charging box's low potential end one side, reduced the high convenient to use person who takes at blank place on the one hand, on the other hand has also realized utilizing gravity to concentrate the technical effect together with the blank. In addition, the positioning holes are utilized to realize the positioning effect on the charging box, so that the inclined placing stability of the charging box is improved.

Further, a blank heating device is used in the step S2 and comprises a heating furnace, a conveying plate is fixedly connected to the inlet end of the heating furnace, a horizontally telescopic mechanism is fixedly connected to the conveying plate, and the telescopic end of the telescopic mechanism faces to one side close to the heating furnace.

Has the advantages that: according to the technical scheme, the function of automatically feeding the blanks into the heating furnace is realized through the telescopic mechanism. Compare and get the blank and put into the heating furnace in prior art's manual clamp, have higher work efficiency to have better security performance, effectively reduce the risk that operating personnel is burnt, scalded by the heating furnace.

Further, a blank upsetting device is used in the step S3, a cooling mechanism is fixedly connected to the supporting seat, and the output end of the cooling mechanism faces to the lower part of the upsetting hammer; the supporting seat is fixedly connected with a negative pressure fan.

Has the advantages that: this technical scheme is through add negative-pressure air fan on the supporting seat to the realization is to the clear away function of vapor. When cooling water is generated into steam when meeting high-temperature blanks, the steam can be quickly pumped out of the workbench under the action of the negative pressure fan, so that operators can always clearly observe the real-time situation of blank upsetting, and the safety in the production process is effectively improved.

Further, the negative pressure fan is embedded and fixedly connected to the supporting seat.

Has the advantages that: this technical scheme adopts the mode of inlaying to fix negative-pressure air fan on the supporting seat, can effectively reduce negative-pressure air fan's occupation space on the one hand, reduces the space occupation volume of whole device, and on the other hand fixes also makes negative-pressure air fan be close to the position that steam produced the source more in the supporting seat, effectively improves the cleanliness of high definition removal steam.

Further, still use blank trompil device in S4, including the second workstation, fixedly connected with supporting seat on the second workstation, be fixed with the telescopic machanism that vertical direction is flexible on the supporting seat, telescopic machanism' S free end fixedly connected with trompil hammer.

Has the advantages that: according to the technical scheme, the ring blank is punched in a telescopic punching mode.

Further, a supporting table is fixed to the second workbench under the hole-opening hammer, a through hole is formed in the supporting table, and the inner diameter of the through hole is larger than the outer diameter of the hole-opening hammer.

Has the advantages that: this technical scheme has the brace table of through-hole through the fixing, and the brace table can play the effect of stable support to the blank on the one hand, and the through-hole on the brace table on the other hand also can hold the waste material that is blanked off, is convenient for subsequent concentrated recovery.

Further, still use ring rolling machine in S5, including the frame, rotate respectively in the frame and be connected with drive roll, driven voller, guide roll and signal roller, still fixedly connected with backup pad in the frame, two slide structures of fixedly connected with in the backup pad, the axial both ends fixedly connected with square pole of signal roller, two square pole difference sliding connection is structural at the slide.

Has the advantages that: this technical scheme is through add the slide in the frame to the realization is to the free regulation of signal roller in the position. An operator can slide and adjust the signal roller according to the size of the outer diameter of the ring product, and the model range of the ring rolling machine for producing the ring is effectively expanded.

Further, a conveying mechanism for the ring rolling machine is further used in the S6 and comprises a conveyor belt, a collecting box is arranged right below the output end of the conveyor belt, an opening is formed above the collecting box, and a plurality of parallel chains are fixedly connected between the opposite side walls of the collecting box.

Has the advantages that: this technical scheme utilizes the chain to realize the cushioning effect to the ring blank, breaks away from the in-process that falls the collecting box on from the conveyer belt when the ring blank. The ring piece blank can drop on the chain, and the chain plays the effect of buffering to the ring piece blank, effectively avoids the ring piece blank to lead to the problem of product damage to take place because of freely falling.

Further, the output end of the conveying belt is fixedly connected with a sliding plate used for buffering blanks.

Has the advantages that: according to the technical scheme, the sliding plate is additionally arranged to further buffer the ring blank. When the ring blanks are detached from the conveyor belt they first fall onto a slide plate, which on the one hand has a guiding effect on the blanks and on the other hand also has the effect of reducing the speed in the vertical direction.

Drawings

FIG. 1 is a frame diagram of a ring rolling production process according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a ring rolling production process according to an embodiment of the present invention;

fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the continuous heating furnace comprises a charging box 101, a hanging lug 102, a supporting member 103, a hook 104, a supporting column 105, a positioning barrel 106, a stop block 107, a continuous heating furnace 201, a supporting frame 202, a conveying plate 203, a first telescopic oil cylinder 204, a push plate 205, a supporting leg 206, a first guide channel 207, a second guide channel 208, a third guide channel 209, a baffle 211, a first working platform 301, a first supporting seat 302, a second telescopic oil cylinder 03, a third telescopic oil cylinder 04, an upsetting hammer 305, a squeezing rod 306, an upsetting platform 307, a squeezing platform 308, a negative pressure fan 309, a positive pressure fan 310, a second working platform 401, a second supporting seat 402, a fourth telescopic oil cylinder 403, a bearing plate 404, a sliding rod 405, a compression spring 406, a hole-opening hammer 407, a rack 501, a driving roller 502, a driven roller 503, a guide roller 504, a signal roller 505, a rolling wheel 506, a supporting plate 507, a square supporting rod 508, a square rod 509, a conveying belt 601, a sliding plate 602, a collecting, Receiving rod 604, iron chain 605, pulley 606.