CN113510020B - Gearbox synchronizing ring double-piece molybdenum spraying clamp and clamping structure and spraying method thereof - Google Patents

Gearbox synchronizing ring double-piece molybdenum spraying clamp and clamping structure and spraying method thereof Download PDF

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Publication number
CN113510020B
CN113510020B CN202110602622.1A CN202110602622A CN113510020B CN 113510020 B CN113510020 B CN 113510020B CN 202110602622 A CN202110602622 A CN 202110602622A CN 113510020 B CN113510020 B CN 113510020B
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Prior art keywords
spraying
low
synchronizing ring
molybdenum
column
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CN113510020A (en
Inventor
祝琼
邓尉平
王暑斌
李少兵
秦振华
刘宗明
向彪
樊晓光
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Dongfeng Longqing Power Co ltd
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Dongfeng Commercial Vehicle Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/18—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the material having originally the shape of a wire, rod or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Coating By Spraying Or Casting (AREA)

Abstract

The invention relates to the field of commercial vehicles, and discloses a double-piece molybdenum spraying clamp for a heavy-duty automobile gearbox synchronizing ring, which comprises a station rotating seat and a clamp base arranged on the station rotating seat, wherein at least three groups of lifting devices are arranged on the clamp base, each lifting device comprises a high supporting column and a low supporting column which are different in height, a plurality of groups of limiting devices are further arranged on the clamp base, each limiting device comprises high limiting columns distributed on two sides of the high supporting columns and low limiting columns distributed on two sides of the low supporting columns, and the high supporting columns, the low supporting columns, the high limiting columns and the low limiting columns are distributed on the circumference of the clamp base. The invention also discloses a clamping structure and a spraying method of the heavy-duty automobile gearbox synchronizing ring double-piece molybdenum spraying clamp. The gearbox synchronizing ring double-piece molybdenum spraying clamp, the clamping structure thereof and the spraying method can place two synchronizing rings at one time, and have high processing efficiency and high material utilization rate.

Description

Gearbox synchronizing ring double-piece molybdenum spraying clamp and clamping structure and spraying method thereof
Technical Field
The invention relates to the field of commercial vehicles, in particular to a gearbox synchronizing ring double-piece molybdenum spraying clamp, a clamping structure and a spraying method thereof.
Background
In order to improve the wear resistance, the ablation resistance and the service life of the synchronizing ring of the gearbox, molybdenum spraying process treatment needs to be carried out on the inner conical surface of the synchronizing ring.
The existing molybdenum spraying equipment is used for processing front and rear auxiliary synchronizing rings of a certain heavy box, domestic enterprises adopt a single molybdenum spraying process, the equipment has 24 stations, each station is provided with a part, and the parts are sent to sand spraying and molybdenum spraying stations in a turntable circulating mode. The equipment is provided with 4 molybdenum spraying guns, two sand spraying guns and two molybdenum spraying guns which are respectively used for pretreatment and molybdenum spraying processing of the surface of a part. And for the front auxiliary synchronizing ring, one part is machined by vertically reciprocating each molybdenum spraying gun for 8 times, and for the rear auxiliary synchronizing ring, one part is machined by vertically reciprocating each molybdenum spraying gun for 20 times. The beat of the front auxiliary synchronizing ring is 0.6 min/piece, the beat of the rear auxiliary synchronizing ring is 1.25 min/piece, and 4 synchronizing rings (2 front auxiliary synchronizing rings and 2 rear auxiliary synchronizing rings) are arranged in one car.
Specifically as shown in fig. 3, a fixture base is arranged on the station rotary base, the fixture base can be driven by the station rotary base to rotate, the fixture base is provided with a limiting column, every 2 limiting columns can limit the position of a bump on the synchronizing ring, 6 limiting columns can limit the position of 3 bumps on the synchronizing ring, the fixture base is further provided with a support column, the end face of the support column is a boss end face capable of limiting the synchronizing ring, and the 3 equal-height support columns on the fixture can keep the rear end face of the synchronizing ring to be horizontal. Thus, the center, the up-down position and the rotation angle of the synchronizer ring can be fixed after the synchronizer ring is placed.
The technical scheme has the following three disadvantages:
1. the single piece processing efficiency is low;
2. when single piece molybdenum spraying is carried out, the utilization rate of the molybdenum wire is not high due to idle strokes at two ends of the stroke of the molybdenum spraying gun;
3. the single molybdenum spraying device has long auxiliary time for replacing molybdenum wires, cleaning nozzles and the like.
Therefore, the current production method has the advantages of low molybdenum material yield, high cost and capacity which can not meet the production requirement.
Disclosure of Invention
The invention aims to provide a double-piece molybdenum spraying clamp for a synchronizing ring of a gearbox, a clamping structure and a spraying method thereof, aiming at overcoming the defects of the prior art, so that two synchronizing rings can be placed at one time, the processing efficiency is high, and the material utilization rate is high.
In order to achieve the purpose, the heavy-duty automobile gearbox synchronizing ring double-piece molybdenum spraying clamp comprises a station rotating seat and a clamp base arranged on the station rotating seat, wherein at least three groups of lifting devices are arranged on the clamp base, each lifting device comprises a high supporting column and a low supporting column which are different in height, a plurality of groups of limiting devices are further arranged on the clamp base, each limiting device comprises a high limiting column distributed on two sides of the high supporting column and a low limiting column distributed on two sides of the low supporting column, and the high supporting columns, the low supporting columns, the high limiting columns and the low limiting columns are distributed on the circumference of the clamp base.
Preferably, the lifting devices are evenly distributed on the circumference of the clamp base.
Preferably, the height difference between the high-support column and the low-support column is greater than the height of the synchronizing ring.
Preferably, the limiting device comprises high limiting columns distributed on two sides of the high supporting columns and a low limiting column distributed on the outer side of the low supporting column.
Preferably, the limiting device comprises two high limiting columns and one low limiting column which are sequentially arranged, and the limiting device is far away from the lifting device.
The utility model provides a heavy load motor transmission synchronizer ring two-piece molybdenum spraying fixture's clamping structure, two synchronizer rings are placed with one heart, just the lug of synchronizer ring staggers, makes the lug of below synchronizer ring be located on the low post that holds in the palm, the lug of top synchronizer ring is located on the high post that holds in the palm, and the lug of below synchronizer ring is by two adjacent low spacing post centre grippings, and the lug of top synchronizer ring is by two adjacent high spacing post centre grippings.
The utility model provides a heavy load motor transmission synchronizer ring two-piece molybdenum spraying fixture's clamping structure, two synchronizer rings are placed with one heart, just the lug of synchronizer ring staggers, makes the lug of below synchronizer ring be located on the low support post, the lug of top synchronizer ring is located on the high support post, and the lug of below synchronizer ring is by adjacent low spacing post and high spacing post centre gripping, and the lug of top synchronizer ring is by two adjacent high spacing post centre grippings.
The utility model provides a heavy load motor transmission synchronizer ring two-piece molybdenum spraying clamp's clamping structure, two synchronizer rings are placed with one heart, just the lug of synchronizer ring staggers, makes the lug of below synchronizer ring be located on the low support post, the lug of top synchronizer ring is located on the high support post, and at least one lug of below synchronizer ring is by adjacent low spacing post and high spacing post centre gripping, and at least one lug of top synchronizer ring is by two adjacent high spacing post centre gripping.
A spraying method of the heavy-duty automobile gearbox synchronizing ring double-piece molybdenum spraying clamp comprises the following steps:
A) feeding: the two synchronizing rings are concentrically arranged, and the lugs of the synchronizing rings are staggered, so that the lug of the lower synchronizing ring is positioned on the low-support column, the lug of the upper synchronizing ring is positioned on the high-support column, the lug of the lower synchronizing ring is clamped by two adjacent low-limit columns, and the lug of the upper synchronizing ring is clamped by two adjacent high-limit columns;
B) pretreatment: setting a sand blasting starting position, a sand blasting ending position, a sand blasting feeding speed and sand blasting processing times, and setting molybdenum wire clamping force, a molybdenum spraying starting position, a molybdenum spraying ending position, an up-down interval, spraying times, a wire feeding speed and workpiece revolution;
C) sand blasting;
D) spraying molybdenum;
E) and (6) blanking.
A spraying method of the heavy-duty automobile gearbox synchronizing ring double-piece molybdenum spraying clamp comprises the following steps:
A) feeding: the two synchronizing rings are concentrically arranged, and the lugs of the synchronizing rings are staggered, so that the lug of the lower synchronizing ring is positioned on the low-support column, the lug of the upper synchronizing ring is positioned on the high-support column, the lug of the lower synchronizing ring is clamped by the adjacent low-limit column and the high-limit column, and the lug of the upper synchronizing ring is clamped by the two adjacent high-limit columns;
B) pretreatment: setting a sand blasting starting position, a sand blasting ending position, a sand blasting feeding speed and sand blasting processing times, and setting molybdenum wire clamping force, a molybdenum spraying starting position, a molybdenum spraying ending position, an up-down interval, spraying times, a wire feeding speed and workpiece revolution;
C) sand blasting;
D) spraying molybdenum;
E) and (6) blanking.
Compared with the prior art, the invention has the following advantages:
1. the improved fixture has compact structure, maintains the positioning precision of the upper and lower synchronous rings and is convenient for taking and placing workpieces;
2. the two pieces are processed simultaneously, so that the processing efficiency is high;
2. the idle strokes at two ends of the stroke of the molybdenum spraying gun are reduced, and the utilization rate of the molybdenum wire is improved;
3. the auxiliary time for replacing the molybdenum wire and cleaning the nozzle is reduced.
Drawings
FIG. 1 is a schematic structural view of a dual molybdenum spraying fixture for a synchronizing ring of a heavy-duty automobile gearbox according to the present invention;
FIG. 2 is a schematic diagram of a dual molybdenum spraying principle of the dual molybdenum spraying fixture for heavy-duty vehicle transmission synchronizer rings according to the present invention;
FIG. 3 is a schematic structural diagram of another embodiment of a dual molybdenum-sprayed clamp for a synchronizer ring of a heavy-duty vehicle transmission according to the present invention;
FIG. 4 is a schematic diagram of a dual molybdenum spraying clamp for a heavy-duty vehicle transmission synchronizer ring according to another embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a single-piece molybdenum spraying fixture in the prior art;
FIG. 6 is a schematic diagram of molybdenum spraying of a prior art single piece molybdenum spraying fixture.
The components in the figures are numbered as follows:
the device comprises a station rotating seat 1, a clamp base 2, a lifting device 3, a high supporting column 4, a low supporting column 5, a high limiting column 6, a low limiting column 7, a synchronizing ring 8, a bump 9, a molybdenum spraying gun 10 and a limiting device 11.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, comparative examples and specific embodiments, and the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Comparative example
As shown in a single molybdenum spraying clamp of a synchronizer ring shown in fig. 5 and a single molybdenum spraying principle diagram of the synchronizer ring shown in fig. 6, a spraying distance L is 120mm, a minimum distance a _ min between an upper spraying point and a lower spraying point and an end surface of a part is 5mm, an included angle alpha between an axis of a molybdenum spraying gun and the end surface is 16 degrees, a minimum distance b _ min between the molybdenum spraying gun and the upper end surface of the part is 5mm at the lower spraying point position, an included angle of 90 degrees (16 degrees-7 degrees) between the axis of the molybdenum spraying gun and a sprayed surface is 81 degrees at the time due to an inclined angle of an inner conical surface of the synchronizer ring is 7 degrees, and a vertical moving distance H of the molybdenum spraying gun is 31 mm.
The parameters of the single-piece spraying process are as follows:
1. pretreatment: the sandblasting starting position R67 is-5, and the sandblasting ending position R68 is-23.5;
the sand blasting feeding speed R75 is 180 mm/min; the number of times of sand blasting R69 is 10;
2. molybdenum spraying: the clamping force of the molybdenum wire is 3.5 bar;
the molybdenum spraying starting position R67 is 5, and the molybdenum spraying ending position R68 is-26;
the upper and lower intervals R72 and R73 are 0.5, and the spraying times R69 are 20;
wire feed speed: 400-500mm/min, workpiece revolution: 50 r/min.
3. Gas: acetylene flow rate: 17.5 NLPM; oxygen flow rate: 52.6 NLPM; compressed air flow rate: 572 NLPM.
According to the process, the beat of the auxiliary synchronous ring before processing is 0.6min per piece; the beat of the secondary synchronizing ring after processing is 1.25 min/piece.
Example one
The utility model provides a heavy load motor transmission synchronizer ring two spares spout molybdenum anchor clamps, include station roating seat 1 and establish anchor clamps base 2 on station roating seat 1, be provided with three group at least lifting device 3 on the anchor clamps base 2, lifting device 3 includes high support post 4 and the low support post 5 of high difference, still be equipped with a plurality of groups of stop device 11 on the anchor clamps base 2, stop device 11 is including distributing at the high spacing post 6 of high support post 4 both sides and distributing at the low spacing post 7 of low support post 5 both sides, high support post 4, low support post 5, high spacing post 6 and low spacing post 7 distribute on the circumference of anchor clamps base 2.
The spraying of this embodiment includes the following steps:
A) feeding: the two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lug 9 of the lower synchronizing ring 8 is positioned on the low-support column 5, the lug 9 of the upper synchronizing ring 8 is positioned on the high-support column 4, the lug 9 of the lower synchronizing ring 8 is clamped by two adjacent low-limit columns 7, and the lug 9 of the upper synchronizing ring 8 is clamped by two adjacent high-limit columns 6;
B) pretreatment: setting a sandblasting starting position R67 to-27.5, a sandblasting ending position R68 to-80.93, a sandblasting feeding speed R75 to 340mm/min and a sandblasting processing frequency R69 to 8, setting molybdenum wire clamping force to be 3.5bar, a molybdenum spraying starting position R67 to 2, a molybdenum spraying ending position R68 to-46, an upper and lower interval R72, R73 to 0.5, a spraying frequency R69 to 20, a wire feeding speed of 300 and 350mm/min and a workpiece rotation number of 50R/min;
C) sand blasting;
D) molybdenum spraying, molybdenum spraying gun 10 acetylene flow: 17.5 NLPM; oxygen flow rate: 52.6 NLPM; compressed air flow rate: 572 NLPM;
E) and (6) blanking.
In the embodiment, the spraying distance L is 120mm, the minimum distance a _ min between the upper spraying point and the lower spraying point and the end surface of the part is 5mm, the included angle between the axis of the molybdenum spraying gun and the end surface is increased to alpha being 20 degrees, the minimum distance b _ min between the molybdenum spraying gun and the upper end surface of the part is 5mm at the lower spraying point position, the included angle between the axis of the molybdenum spraying gun and the sprayed surface is 90 degrees (20 degrees-7 degrees) at the time being 77 degrees due to the inclined angle of the inner conical surface of the synchronous ring, and the up-down moving distance H of the molybdenum spraying gun is 48 mm.
As the up-and-down movement distance of the molybdenum spraying gun is seen, 31mm is needed for single-piece molybdenum spraying, 48mm is needed for double-piece molybdenum spraying, 14mm is saved compared with a single-piece molybdenum spraying mode, and the loss of molybdenum materials in the stroke is saved. In addition, the production efficiency is obviously improved along with the acceleration of the production takt.
In this embodiment, the beat of the auxiliary synchronizing ring before processing is 0.3 min/piece, the efficiency is improved by 50%, and the beat of the auxiliary synchronizing ring after processing is 0.93 min/piece, the efficiency is improved by 25.6%; the material utilization rate of the front auxiliary synchronizing ring is improved by 35 percent, and the material utilization rate of the rear auxiliary synchronizing ring is improved by 30 percent; the single piece assist time is reduced by 10%.
Example two
The utility model provides a heavy load motor transmission synchronizer ring two spares spout molybdenum anchor clamps, include station roating seat 1 and establish anchor clamps base 2 on station roating seat 1, be provided with three group at least lifting device 3 on the anchor clamps base 2, lifting device 3 includes high support post 4 and the low support post 5 of high difference, still be equipped with a plurality of groups of stop device 11 on the anchor clamps base 2, stop device 11 is including distributing at the high spacing post 6 of high support post 4 both sides and distributing at the low spacing post 7 of low support post 5 both sides, high support post 4, low support post 5, high spacing post 6 and low spacing post 7 distribute on the circumference of anchor clamps base 2, and lifting device 3 evenly distributed is on the circumference of anchor clamps base 2.
The spraying of this embodiment includes the following steps:
A) feeding: the two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lug 9 of the lower synchronizing ring 8 is positioned on the low-support column 5, the lug 9 of the upper synchronizing ring 8 is positioned on the high-support column 4, the lug 9 of the lower synchronizing ring 8 is clamped by two adjacent low-limit columns 7, and the lug 9 of the upper synchronizing ring 8 is clamped by two adjacent high-limit columns 6;
B) pretreatment: setting a sandblasting starting position R67 to-27.5, a sandblasting ending position R68 to-80.93, a sandblasting feeding speed R75 to 340mm/min and a sandblasting processing frequency R69 to 8, setting molybdenum wire clamping force to be 3.5bar, a molybdenum spraying starting position R67 to 2, a molybdenum spraying ending position R68 to-46, an upper and lower interval R72, R73 to 0.5, a spraying frequency R69 to 20, a wire feeding speed of 300 and 350mm/min and a workpiece rotation number of 50R/min;
C) sand blasting;
D) molybdenum spraying, molybdenum spraying gun 10 acetylene flow: 17.5 NLPM; oxygen flow rate: 52.6 NLPM; compressed air flow rate: 572 NLPM;
E) and (6) blanking.
In the embodiment, the spraying distance L is 120mm, the minimum distance a _ min between the upper spraying point and the lower spraying point and the end surface of the part is 5mm, the included angle between the axis of the molybdenum spraying gun and the end surface is increased to alpha being 20 degrees, the minimum distance b _ min between the molybdenum spraying gun and the upper end surface of the part is 5mm at the lower spraying point position, the included angle between the axis of the molybdenum spraying gun and the sprayed surface is 90 degrees (20 degrees-7 degrees) at the time being 77 degrees due to the inclined angle of the inner conical surface of the synchronous ring, and the up-down moving distance H of the molybdenum spraying gun is 48 mm.
As the up-and-down movement distance of the molybdenum spraying gun is seen, 31mm is needed for single-piece molybdenum spraying, 48mm is needed for double-piece molybdenum spraying, 14mm is saved compared with a single-piece molybdenum spraying mode, and the loss of molybdenum materials in the stroke is saved. In addition, the production efficiency is obviously improved along with the acceleration of the production takt.
In the embodiment, the beat of the auxiliary synchronizing ring is 0.3 min/piece before processing, the efficiency is improved by 50%, the beat of the auxiliary synchronizing ring is 0.93 min/piece after processing, and the efficiency is improved by 25.6%; the material utilization rate of the front auxiliary synchronizing ring is improved by 35 percent, and the material utilization rate of the rear auxiliary synchronizing ring is improved by 30 percent; the single piece assist time is reduced by 10%.
EXAMPLE III
The utility model provides a heavy load motor transmission synchronizer ring two spares spout molybdenum anchor clamps, include station roating seat 1 and establish anchor clamps base 2 on station roating seat 1, be provided with three group at least lifting device 3 on the anchor clamps base 2, lifting device 3 includes high support post 4 and the low support post 5 of high difference, still be equipped with a plurality of groups of stop device 11 on the anchor clamps base 2, stop device 11 is including distributing at the high spacing post 6 of high support post 4 both sides and distributing at the low spacing post 7 of low support post 5 both sides, high support post 4, low support post 5, high spacing post 6 and low spacing post 7 distribute on the circumference of anchor clamps base 2, and lifting device 3 evenly distributed is on the circumference of anchor clamps base 2.
In this embodiment, the height difference between the high-support column 4 and the low-support column 5 is greater than 1mm of the height of the synchronizing ring 8.
The spraying of this embodiment includes the following steps:
A) feeding: the two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lug 9 of the lower synchronizing ring 8 is positioned on the low-support column 5, the lug 9 of the upper synchronizing ring 8 is positioned on the high-support column 4, the lug 9 of the lower synchronizing ring 8 is clamped by two adjacent low-limit columns 7, and the lug 9 of the upper synchronizing ring 8 is clamped by two adjacent high-limit columns 6;
B) pretreatment: setting a sandblasting starting position R67-27.5, a sandblasting ending position R68-80.93, a sandblasting feeding speed R75-340 mm/min and a sandblasting processing frequency R69-8, setting a molybdenum wire clamping force of 3.5bar, a molybdenum spraying starting position R67-2, a molybdenum spraying ending position R68-46, an upper and lower interval R72, R73-0.5, a spraying frequency R69-20, a wire feeding speed of 300-350mm/min and a workpiece revolution number of 50R/min;
C) sand blasting;
D) molybdenum spraying, molybdenum spraying gun 10 acetylene flow: 17.5 NLPM; oxygen flow rate: 52.6 NLPM; compressed air flow rate: 572 NLPM;
E) and (6) blanking.
In the embodiment, the spraying distance L is 120mm, the minimum distance a _ min between the upper spraying point and the lower spraying point and the end surface of the part is 5mm, the included angle between the axis of the molybdenum spraying gun and the end surface is increased to alpha being 20 degrees, the minimum distance b _ min between the molybdenum spraying gun and the upper end surface of the part is 5mm at the lower spraying point position, the included angle between the axis of the molybdenum spraying gun and the sprayed surface is 90 degrees (20 degrees-7 degrees) at the time being 77 degrees due to the inclined angle of the inner conical surface of the synchronous ring, and the up-down moving distance H of the molybdenum spraying gun is 48 mm.
As the up-and-down movement distance of the molybdenum spraying gun is seen, 31mm is needed for single-piece molybdenum spraying, 48mm is needed for double-piece molybdenum spraying, 14mm is saved compared with a single-piece molybdenum spraying mode, and the loss of molybdenum materials in the stroke is saved. In addition, the production efficiency is obviously improved along with the acceleration of the production takt.
In this embodiment, the beat of the auxiliary synchronizing ring before processing is 0.3 min/piece, the efficiency is improved by 50%, and the beat of the auxiliary synchronizing ring after processing is 0.93 min/piece, the efficiency is improved by 25.6%; the material utilization rate of the front auxiliary synchronizing ring is improved by 35 percent, and the material utilization rate of the rear auxiliary synchronizing ring is improved by 30 percent; the single piece assist time is reduced by 10%.
Example four
As shown in fig. 1, a heavy load automotive transmission synchronizer ring two-piece molybdenum spraying fixture, include station roating seat 1 and establish fixture base 2 on station roating seat 1, be provided with three group at least lifting device 3 on fixture base 2, lifting device 3 includes high support post 4 and the low support post 5 of high difference, still be equipped with a plurality of groups of stop device 11 on fixture base 2, stop device 11 is including distributing at the high spacing post 6 of high support post 4 both sides and distributing at the low spacing post 7 of a low support post 5 outside, high support post 4, low support post 5, high spacing post 6 and low spacing post 7 distribute on the circumference of fixture base 2, and lifting device 3 evenly distributed is on the circumference of fixture base 2.
In this embodiment, the height difference between the high-support column 4 and the low-support column 5 is 1mm greater than the height of the synchronizing ring 8.
The spraying of this embodiment includes the following steps:
A) feeding: the two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lug 9 of the lower synchronizing ring 8 is positioned on the low-support column 5, the lug 9 of the upper synchronizing ring 8 is positioned on the high-support column 4, the lug 9 of the lower synchronizing ring 8 is clamped by the adjacent low-limit column 7 and the adjacent high-limit column 6, and the lug 9 of the upper synchronizing ring 8 is clamped by the two adjacent high-limit columns 6;
B) pretreatment: setting a sandblasting starting position R67 to-27.5, a sandblasting ending position R68 to-80.93, a sandblasting feeding speed R75 to 340mm/min and a sandblasting processing frequency R69 to 8, setting molybdenum wire clamping force to be 3.5bar, a molybdenum spraying starting position R67 to 2, a molybdenum spraying ending position R68 to-46, an upper and lower interval R72, R73 to 0.5, a spraying frequency R69 to 20, a wire feeding speed of 300 and 350mm/min and a workpiece rotation number of 50R/min;
C) sand blasting;
D) molybdenum spraying, molybdenum spraying gun 10 acetylene flow: 17.5 NLPM; oxygen flow rate: 52.6 NLPM; compressed air flow rate: 572 NLPM;
E) and (6) blanking.
In the present embodiment, as shown in fig. 2, the spraying distance L is 120mm, the minimum distance a _ min between the upper spraying point and the lower spraying point and the end surface of the part is 5mm, the included angle between the axis of the molybdenum spraying gun and the end surface is increased to α being 20 °, the minimum distance b _ min between the molybdenum spraying gun and the upper end surface of the part is 5mm at the lower spraying point position, and since the inclined angle of the inner conical surface of the synchronization ring is 7 °, the included angle between the axis of the molybdenum spraying gun and the sprayed surface is 90 ° - (20 ° -7 °) being 77 °, and the up-down moving distance H of the molybdenum spraying gun is 48 mm.
As the up-and-down movement distance of the molybdenum spraying gun is seen, 31mm is needed for single-piece molybdenum spraying, 48mm is needed for double-piece molybdenum spraying, 14mm is saved compared with a single-piece molybdenum spraying mode, and the loss of molybdenum materials in the stroke is saved. In addition, the production efficiency is obviously improved along with the acceleration of the production takt.
In this embodiment, the beat of the auxiliary synchronizing ring before processing is 0.3 min/piece, the efficiency is improved by 50%, and the beat of the auxiliary synchronizing ring after processing is 0.93 min/piece, the efficiency is improved by 25.6%; the material utilization rate of the front auxiliary synchronizing ring is improved by 35 percent, and the material utilization rate of the rear auxiliary synchronizing ring is improved by 30 percent; the single piece assist time is reduced by 10%.
EXAMPLE five
As shown in figure 3, a heavy load motor transmission synchronizing ring two-piece molybdenum spraying fixture, include station roating seat 1 and establish the anchor clamps base 2 on station roating seat 1, be provided with three group at least lifting device 3 on the anchor clamps base 2, lifting device 3 includes high support post 4 and the low support post 5 of high difference, still be equipped with a plurality of groups of stop device 11 on the anchor clamps base 2, stop device 11 is including two high spacing posts 6 and a low spacing post 7 of arranging in proper order, and stop device 11 keeps away from lifting device 3, lifting device 3 evenly distributed is on the circumference of anchor clamps base 2.
In this embodiment, the height difference between the high-support column 4 and the low-support column 5 is 1mm greater than the height of the synchronizing ring 8.
The spraying of this embodiment includes the following steps:
A) feeding: the two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lug 9 of the lower synchronizing ring 8 is positioned on the low-support column 5, the lug 9 of the upper synchronizing ring 8 is positioned on the high-support column 4, at least one lug 9 of the lower synchronizing ring 8 is clamped by the adjacent low-limit column 7 and the adjacent high-limit column 6, and at least one lug 9 of the upper synchronizing ring 8 is clamped by the two adjacent high-limit columns 6;
B) pretreatment: setting a sandblasting starting position R67 to-27.5, a sandblasting ending position R68 to-80.93, a sandblasting feeding speed R75 to 340mm/min and a sandblasting processing frequency R69 to 8, setting molybdenum wire clamping force to be 3.5bar, a molybdenum spraying starting position R67 to 2, a molybdenum spraying ending position R68 to-46, an upper and lower interval R72, R73 to 0.5, a spraying frequency R69 to 20, a wire feeding speed of 300 and 350mm/min and a workpiece rotation number of 50R/min;
C) sand blasting;
D) molybdenum spraying, molybdenum spraying gun 10 acetylene flow: 17.5 NLPM; oxygen flow rate: 52.6 NLPM; compressed air flow rate: 572 NLPM;
E) and (6) blanking.
In the present embodiment, as shown in fig. 4, the spraying distance L is 120mm, the minimum distance a _ min between the upper spraying point and the lower spraying point and the end surface of the part is 5mm, the included angle between the axis of the molybdenum spraying gun and the end surface is increased to α being 20 °, the minimum distance b _ min between the molybdenum spraying gun and the upper end surface of the part is 5mm at the lower spraying point position, and since the inclination angle of the inner conical surface of the synchronization ring is 7 °, the included angle between the axis of the molybdenum spraying gun and the sprayed surface is 90 ° - (20 ° -7 °) being 77 °, and the up-down moving distance H of the molybdenum spraying gun is 48 mm.
As the up-and-down movement distance of the molybdenum spraying gun is seen, 31mm is needed for single-piece molybdenum spraying, 48mm is needed for double-piece molybdenum spraying, 14mm is saved compared with a single-piece molybdenum spraying mode, and the loss of molybdenum materials in the stroke is saved. In addition, the production efficiency is obviously improved along with the acceleration of the production takt.
In this embodiment, the beat of the auxiliary synchronizing ring before processing is 0.3 min/piece, the efficiency is improved by 50%, and the beat of the auxiliary synchronizing ring after processing is 0.93 min/piece, the efficiency is improved by 25.6%; the material utilization rate of the front auxiliary synchronizing ring is improved by 35 percent, and the material utilization rate of the rear auxiliary synchronizing ring is improved by 30 percent; the single piece assist time is reduced by 10%.
In the first embodiment, the second embodiment and the third embodiment, the clamping structure of the heavy-duty automobile gearbox synchronizing ring two-piece molybdenum spraying clamp is that two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lugs 9 of the lower synchronizing ring 8 are positioned on the low-support columns 5, the lugs 9 of the upper synchronizing ring 8 are positioned on the high-support columns 4, the lugs 9 of the lower synchronizing ring 8 are clamped by two adjacent low-limit columns 7, and the lugs 9 of the upper synchronizing ring 8 are clamped by two adjacent high-limit columns 6.
In the fourth embodiment, the clamping structure of the heavy-duty automobile gearbox synchronizing ring two-piece molybdenum spraying clamp is that two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lugs 9 of the lower synchronizing ring 8 are positioned on the low-supporting columns 5, the lugs 9 of the upper synchronizing ring 8 are positioned on the high-supporting columns 4, the lugs 9 of the lower synchronizing ring 8 are clamped by the adjacent low-limiting columns 7 and the adjacent high-limiting columns 6, and the lugs 9 of the upper synchronizing ring 8 are clamped by the two adjacent high-limiting columns 6. Compared with the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, the high limiting column 6 is shared, so that the structure is simpler.
In the fifth embodiment, the clamping structure of the heavy-duty automobile gearbox synchronizing ring two-piece molybdenum spraying clamp is that two synchronizing rings 8 are concentrically arranged, and the lugs 9 of the synchronizing rings 8 are staggered, so that the lug 9 of the lower synchronizing ring 8 is positioned on the low-support column 5, the lug 9 of the upper synchronizing ring 8 is positioned on the high-support column 4, in addition, at least one lug 9 of the lower synchronizing ring 8 is clamped by the adjacent low-limit column 7 and the adjacent high-limit column 6, and at least one lug 9 of the upper synchronizing ring 8 is clamped by the two adjacent high-limit columns 6. Because stop device 11 is kept away from lifting device 3, the interference problem that stop device 11 and lifting device 3 take place when the installation has been avoided.
In the invention, a high limit column 6 and a high support column 4 are designed to restrict the position of an upper synchronous ring 8, and a low limit column 7 and a low support column 5 are designed or a high limit column 6 is shared to restrict the position of a lower synchronous ring 7. The upper and lower synchronizing rings 7 are concentrically arranged, the convex blocks 9 are staggered by an angle, and the upper and lower synchronizing rings 8 are completely restrained by the high supporting columns 4, the low supporting columns 5, the high limiting columns 6 and the low limiting columns 7 on the circumference. The improved fixture has compact structure, maintains the positioning precision of the upper and lower synchronizing rings 8 and is convenient for taking and placing workpieces.
After the molybdenum spraying of the above embodiment, the part is detected, the depth of the molybdenum layer is 0.20mm, and the porosity: 9.8% -10%, bonding strength: MIN 20MPa (test block inspection), the requirement of molybdenum spraying of a synchronizer ring product is met, and the fact that the quality of molybdenum spraying is not affected by the change of the included angle of 4 degrees between a spray gun and a sprayed surface under the condition of double molybdenum spraying is proved.
The clamp structure is suitable for spraying molybdenum on a front auxiliary synchronizing ring and a rear auxiliary synchronizing ring, the clamp structures of the two parts are the same, the sizes of the clamps are different, the corresponding machining process parameters are different, and in actual use, the process parameters can be adjusted and changed according to the size of the synchronizing ring.
According to the gearbox synchronizing ring double-piece molybdenum spraying clamp and the clamping structure and the spraying method thereof, the improved clamp is compact in structure, the positioning accuracy of the upper synchronizing ring 8 and the lower synchronizing ring 8 is kept, and workpieces are convenient to take and place; the double workpieces are processed simultaneously, the processing efficiency is high, the beat of the auxiliary synchronous ring is 0.3 min/workpiece before processing, the efficiency is improved by 50%, the beat of the auxiliary synchronous ring is 0.93 min/workpiece after processing, and the efficiency is improved by 25.6%; the idle strokes at two ends of the stroke of the molybdenum spraying gun 10 are reduced, the utilization rate of the molybdenum wire is improved, the material utilization rate of the front auxiliary synchronizing ring is improved by 35 percent, and the material utilization rate of the rear auxiliary synchronizing ring is improved by 30 percent; the auxiliary time for replacing the molybdenum wire and cleaning the nozzle is reduced, and the auxiliary time for a single piece is reduced by 10 percent.
Finally, it should be noted that the above is a detailed description of the invention, and the embodiments of the invention are not to be considered as limited to the description, and those skilled in the art to which the invention pertains will be able to make simple substitutions without departing from the spirit of the invention. The above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Meanwhile, it should be noted that the above description of the technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims. The features of the various embodiments of the present invention may be partially or fully combined or spliced with each other and performed in a variety of different configurations as would be well understood by those skilled in the art. Embodiments of the invention may be performed independently of each other or may be performed together in an interdependent relationship.
For those skilled in the art to which the invention relates, several simple deductions or substitutions may be made without departing from the spirit of the invention, and the above-mentioned structures should be considered as belonging to the protection scope of the invention.

Claims (5)

1. The utility model provides a two molybdenum anchor clamps that spout of heavy load motor transmission synchronizer ring which characterized in that: include station roating seat (1) and establish anchor clamps base (2) on station roating seat (1), its characterized in that: at least three groups of lifting devices (3) are arranged on the clamp base (2), each lifting device (3) comprises a high supporting column (4) and a low supporting column (5) which are different in height, and a plurality of groups of limiting devices (11) are further arranged on the clamp base (2);
the limiting device (11) comprises high limiting columns (6) distributed on two sides of the high supporting column (4) and a low limiting column (7) distributed on the outer side of the low supporting column (5), the high supporting columns (4), the low supporting columns (5), the high limiting columns (6) and the low limiting columns (7) are distributed on the circumference of the clamp base (2), two synchronous rings (8) are concentrically arranged, and the lugs (9) of the synchronizing rings (8) are staggered, so that the lug (9) of the lower synchronizing ring (8) is positioned on the low support column (5), the lug (9) of the upper synchronizing ring (8) is positioned on the high support column (4), and the lug (9) of the lower synchronizing ring (8) is clamped by the adjacent low limiting column (7) and the high limiting column (6), and the lug (9) of the upper synchronizing ring (8) is clamped by the two adjacent high limiting columns (6).
2. The heavy-duty vehicle transmission synchronizing ring two-piece molybdenum spraying clamp as claimed in claim 1, wherein: the lifting devices (3) are uniformly distributed on the circumference of the clamp base (2).
3. The heavy-duty automobile gearbox synchronizing ring double-piece molybdenum spraying clamp as recited in claim 1, wherein: the height difference between the high support column (4) and the low support column (5) is greater than the height of the synchronizing ring (8).
4. The utility model provides a heavy load motor transmission synchronizer ring two-piece spouts molybdenum anchor clamps which characterized in that: include station roating seat (1) and establish anchor clamps base (2) on station roating seat (1), its characterized in that: at least three groups of lifting devices (3) are arranged on the clamp base (2), each lifting device (3) comprises a high supporting column (4) and a low supporting column (5) which are different in height, and a plurality of groups of limiting devices (11) are further arranged on the clamp base (2);
the limiting device (11) comprises two high limiting columns (6) and a low limiting column (7) which are arranged in sequence, the limiting device (11) is far away from the lifting device (3), the high supporting column (4), the low supporting column (5), the high limiting column (6) and the low limiting column (7) are distributed on the circumference of the clamp base (2), the two synchronous rings (8) are concentrically arranged, and the lugs (9) of the synchronizing rings (8) are staggered, so that the lug (9) of the lower synchronizing ring (8) is positioned on the low-support column (5), the lug (9) of the upper synchronizing ring (8) is positioned on the high-support column (4), and the lug (9) of the lower synchronizing ring (8) is clamped by the adjacent low limiting column (7) and the high limiting column (6), and the lug (9) of the upper synchronizing ring (8) is clamped by the two adjacent high limiting columns (6).
5. The spraying method of the heavy-duty vehicle gearbox synchronizing ring two-piece molybdenum spraying clamp as claimed in claim 1, characterized in that: the method comprises the following steps:
A) feeding: the two synchronizing rings (8) are concentrically arranged, the lugs (9) of the synchronizing rings (8) are staggered, the lug (9) of the lower synchronizing ring (8) is positioned on the low-support column (5), the lug (9) of the upper synchronizing ring (8) is positioned on the high-support column (4), the lug (9) of the lower synchronizing ring (8) is clamped by the adjacent low-limit column (7) and the adjacent high-limit column (6), and the lug (9) of the upper synchronizing ring (8) is clamped by the two adjacent high-limit columns (6);
B) pretreatment: setting a sand blasting starting position, a sand blasting ending position, a sand blasting feeding speed and sand blasting processing times, and setting molybdenum wire clamping force, a molybdenum spraying starting position, a molybdenum spraying ending position, an up-down interval, spraying times, a wire feeding speed and workpiece revolution;
C) sand blasting;
D) spraying molybdenum;
E) and (6) blanking.
CN202110602622.1A 2021-05-31 2021-05-31 Gearbox synchronizing ring double-piece molybdenum spraying clamp and clamping structure and spraying method thereof Active CN113510020B (en)

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