CN111853043B - Cold-rolled seamless steel tube for automobile transmission shaft and preparation process thereof - Google Patents

Cold-rolled seamless steel tube for automobile transmission shaft and preparation process thereof Download PDF

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Publication number
CN111853043B
CN111853043B CN202010560212.0A CN202010560212A CN111853043B CN 111853043 B CN111853043 B CN 111853043B CN 202010560212 A CN202010560212 A CN 202010560212A CN 111853043 B CN111853043 B CN 111853043B
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China
Prior art keywords
seamless steel
sliding
wheel
supporting plate
shaft
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CN202010560212.0A
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Chinese (zh)
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CN111853043A (en
Inventor
杜海滨
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Zhejiang Jiuding Machinery Co ltd
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Zhejiang Jiuding Machinery Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/023—Shafts; Axles made of several parts, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/03—Shafts; Axles telescopic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/44—Shaping by deformation without removing material by rolling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/62—Shaping by removing material, e.g. machining by turning, boring, drilling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2235/00—Cleaning
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Forging (AREA)

Abstract

The invention discloses a cold-rolled seamless steel tube for an automobile transmission shaft and a preparation process thereof, and the cold-rolled seamless steel tube comprises a seamless steel tube body I, a seamless steel tube body II, a telescopic sleeve and a flange I, wherein the seamless steel tube body II is positioned in the seamless steel tube body I, one end of the seamless steel tube body is provided with a connecting shaft, one end of the connecting shaft is connected with the telescopic sleeve, the other end of the connecting shaft is fixedly connected with the seamless steel tube body I and the seamless steel tube body II respectively, the other end of the seamless steel tube body I and the seamless steel tube body II are fixedly connected with the connecting shaft, the other end of the seamless steel tube body I is fixedly connected with the fork frame, the other end of the seamless steel tube body II is detachably connected with the fork frame, a cross shaft is arranged in the fork frame, the cross shaft is in threaded connection with the upper end and the lower end of the fork frame, the fork frame is connected with a flange II matched with the flange I through the cross shaft, and the flange I is in threaded connection with the flange II. The invention has the beneficial effects that: the strength of the automobile transmission shaft is enhanced.

Description

Cold-rolled seamless steel tube for automobile transmission shaft and preparation process thereof
Technical Field
The invention relates to the technical field related to seamless steel pipes, in particular to a cold-rolled seamless steel pipe for an automobile transmission shaft and a preparation process thereof.
Background
The seamless steel pipe is made of monolithic metal and has no seam on the surface, and is widely used for manufacturing structural parts and mechanical parts, such as annular parts manufactured by steel pipes for petroleum drill pipes, automobile transmission shafts, bicycle frames, steel scaffold used in building construction and the like, so that the material utilization rate can be improved, the manufacturing process can be simplified, and the materials and the processing time can be saved. The automobile transmission shaft is a rotating body with high rotating speed and few supports, and is easy to break in the running process, so that the strength of the seamless steel pipe needs to be improved to enhance the strength of the automobile transmission shaft.
Disclosure of Invention
The invention provides a cold-rolled seamless steel tube for an automobile transmission shaft, which has high strength and is not easy to break, and a preparation process thereof, in order to overcome the defects of low strength and easy to break of the automobile transmission shaft in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a cold rolling seamless steel pipe for automobile transmission shaft, includes seamless steel pipe body one, seamless steel pipe body two, flexible cover and flange one, seamless steel pipe body two is located seamless steel pipe body one, seamless steel pipe body one end is equipped with the connecting axle, the one end and the flexible cover of connecting axle are connected, the other end of connecting axle respectively with seamless steel pipe body one and seamless steel pipe body two fixed connection, seamless steel pipe body one's the other end is equipped with fork frame, fork frame's shape is U type fork, seamless steel pipe body one end and seamless steel pipe body two's one end all with connecting axle fixed connection, seamless steel pipe body one's the other end and fork frame fixed connection, seamless steel pipe body two's the other end and fork frame detachable connection, be equipped with the cross axle in the fork frame, the upper and lower both ends threaded connection of cross axle and fork frame, the fork frame is connected with flange two assorted flange two through the cross axle, flange one and flange two threaded connection.
The seamless steel pipe body is located in the seamless steel pipe body I, one end of the seamless steel pipe body I is provided with a connecting shaft, one end of the connecting shaft is connected with a telescopic sleeve, the other end of the connecting shaft is fixedly connected with the seamless steel pipe body I and the seamless steel pipe body II respectively, the other end of the seamless steel pipe body I is provided with a fork-shaped frame, the fork-shaped frame is U-shaped, one end of the seamless steel pipe body I and one end of the seamless steel pipe body II are fixedly connected with the connecting shaft, the other end of the seamless steel pipe body I is fixedly connected with the fork-shaped frame, the other end of the seamless steel pipe body II is detachably connected with the fork-shaped frame, a cross shaft is arranged in the fork-shaped frame and is in threaded connection with the upper end and the lower end of the fork-shaped frame, the fork-shaped frame is connected with a flange II matched with the flange I through the cross shaft, and the flange I is in threaded connection with the flange II. In the prior art, the automobile transmission shaft is manufactured by a single seamless steel pipe to be transmitted and is easy to break, and the two seamless steel pipes are adopted to greatly enhance the strength of the automobile transmission shaft, so that the purposes of high strength and difficult breaking are achieved.
Preferably, an external spline is arranged on the connecting shaft, an internal spline matched with the external spline is arranged in the telescopic sleeve, one end of the connecting shaft is installed in the telescopic sleeve in a matched mode through the external spline and the internal spline, the other end of the connecting shaft is fixedly connected with the first seamless steel pipe body and is provided with a first connecting block, the first connecting block is located in the first seamless steel pipe body, the connecting shaft is fixedly connected with the second seamless steel pipe body through the first connecting block, the opening end of the fork frame is connected with the second flange through the cross shaft, the bottom end of the fork frame is fixedly connected with the first seamless steel pipe body and is provided with a second connecting block, the second connecting block is located in the first seamless steel pipe body and is internally provided with a mounting groove matched with the second seamless steel pipe body, the second seamless steel pipe body is sleeved in the second connecting block on the fork frame in a matched mode, and a plurality of evenly distributed through holes are formed in the second seamless steel pipe body. The seamless steel tube body II is provided with the through hole, so that the weight of the automobile transmission shaft is reduced, and the high-speed rotation is facilitated while the strength of the transmission shaft is ensured.
Preferably, the cross shaft comprises a first shaft and a second shaft which are fixedly connected, the first shaft and the second shaft are mutually perpendicular and are in a cross shape, two ends of the first shaft are respectively in threaded connection with the upper end and the lower end of the fork-shaped frame, two rotating rods are arranged on one side of the second flange, the second flange is respectively in rotary connection with two ends of the second shaft through the two rotating rods, a plurality of raised strips are arranged on the other side of the second flange, and a plurality of grooves matched with the raised strips are formed in the first flange. When the transmission shaft rotates, the first flange is in threaded connection with the second flange, the convex strips on the second flange are matched with the grooves on the first flange, so that the deformation of bolts can be prevented, and the strength of flange connection is greatly improved.
The invention also provides a preparation process of the cold-rolled seamless steel tube for the automobile transmission shaft, which comprises the following steps:
step one, performing three-roller continuous rolling on a billet, and performing sizing test after extrusion;
step two, detecting whether the outer surface has cracks or not, cutting off a billet after the detection is qualified and the outer surface has no cracks, and carrying out centering treatment through a puncher;
step three, heating the steel billet to carry out hot rolling perforation, and producing the steel billet into a blank pipe;
step four, pickling the steel billet by using liquid, observing whether a large number of bubbles are generated on the surface of the steel billet, and if no large number of bubbles are generated, enabling the quality of the steel billet to reach the standard;
Step five, performing preliminary cold rolling treatment on the steel billet, performing heat treatment after cold rolling, reducing the hardness of the pipe after processing, and reducing the structure of the steel pipe;
step six, straightening the billet after heat treatment;
cutting off the head and the tail of the billet, and chamfering the two ends of the billet;
step eight, carrying out acid-phosphorus soap lubrication treatment on the steel billet, and producing a finished product by using a two-roll cold rolling mill;
step nine, straightening the steel pipe by adopting a straightener;
step ten, the steel pipe is subjected to oil removal treatment in the oil removal cylinder to remove greasy dirt;
step eleven, the steel pipe is immersed in rust-preventive oil to prevent rust;
step twelve, performing eddy current and ultrasonic flaw detection treatment, checking defects of the inner surface and the outer surface of the steel pipe, detecting tolerance dimensions by a micrometer and an internal diameter meter, and respectively forming a qualified seamless steel pipe body I and a seamless steel pipe body II, wherein the diameter of the seamless steel pipe body II is smaller than that of the seamless steel pipe body I;
thirteenth, drilling a plurality of uniformly distributed through holes on the seamless steel tube body II through a drilling machine, and chamfering the edges of the through holes;
fourteen, fixedly connecting one end of the seamless steel tube body II with the connecting block I on the connecting shaft through welding, fixedly connecting one end of the seamless steel tube body II with the connecting shaft through welding, sleeving the fork-shaped frame at the other end of the seamless steel tube body II through the connecting block I, and finally fixedly connecting the fork-shaped frame with the other end of the seamless steel tube body II through welding.
The transmission shaft adopts seamless steel pipe body one and seamless steel pipe body two preparation, has improved the intensity of transmission shaft greatly, bores simultaneously and gets a plurality of through-hole on the seamless steel pipe body two, is favorable to alleviateing the weight of car transmission shaft, is convenient for high-speed rotation when guaranteeing transmission shaft intensity.
Preferably, the straightening machine comprises an operation table, the shape of the operation table is cuboid, a plurality of supporting columns which are uniformly distributed are arranged at the bottom of the operation table, conveying devices are arranged at two ends of the operation table, a turnover mechanism and a straightening area are arranged in the middle of the operation table, the turnover mechanism is located between one conveying device and the straightening area, a plurality of fixed wheels which correspond to the conveying devices and a plurality of sliding wheels which correspond to the conveying devices are arranged in the straightening area, the fixed wheels are uniformly distributed along the length direction of the operation table, the fixed wheels are arranged at the top of the operation table and are rotationally connected with the operation table, a sliding groove I is arranged on the side surface of the fixed wheels, a cylinder I is arranged on one side of the sliding groove I, the fixed wheels are located at the other side corresponding to the sliding groove I, a sliding block I is arranged in the sliding groove I, the output end of the cylinder I is fixedly connected with the sliding block I, the sliding block I is slidingly connected with the sliding groove I along the width direction of the operation table, the sliding wheels are arranged on the sliding block I and are uniformly distributed along the length direction of the operation table, and the sliding wheels are rotationally connected with the sliding block. An operator clamps the head end of the seamless steel pipe on a conveying device far away from the turnover mechanism to carry out forward conveying, then starts a first cylinder to push a sliding wheel to move to one side of a fixed wheel to enable the sliding wheel to move to a proper position, straightens two sides of the seamless steel pipe, and sequentially passes through the turnover mechanism and the conveying device close to the turnover mechanism; when the tail end of the seamless steel tube is about to be separated from the conveying device far away from the turnover mechanism, starting the conveying device near the turnover mechanism, and clamping the seamless steel tube to continue forward conveying; when the tail end of the seamless steel pipe is straightened through the straightening area, starting a turnover mechanism, clamping the seamless steel pipe, loosening the seamless steel pipe by a conveying device close to the turnover mechanism, driving the seamless steel pipe to rotate by 90 degrees by the turnover mechanism, clamping the seamless steel pipe again by the conveying device close to the turnover mechanism, loosening the seamless steel pipe, reversely conveying the seamless steel pipe by the conveying device close to the turnover mechanism, and straightening the other two sides of the seamless steel pipe; when the front end of the seamless steel pipe is about to be separated from the conveying device close to the turnover mechanism in reverse conveying, the conveying device far away from the turnover mechanism is started, and the seamless steel pipe is clamped to continue to be conveyed reversely until straightening is finished.
Preferably, the operation table is provided with a first rectangular hole, one side of the first rectangular hole is close to the fixed wheel and the sliding wheel, the other corresponding side of the first rectangular hole is far away from the fixed wheel and the sliding wheel, a first supporting plate is arranged in the first rectangular hole and is arranged on one side of the first rectangular hole, which is close to the fixed wheel and the sliding wheel, a first motor is arranged on the first supporting plate, a gear is arranged at the output end of the first motor, a plurality of racks matched with the gears are arranged on the turnover mechanism, and the gears are meshed with the racks. And the motor I controls the rotation angle of the turnover mechanism through the engagement of the gear and the rack, so that automatic operation is realized.
As the preference, tilting mechanism includes steering sleeve and spacing pipe, the mid portion of spacing pipe is located steering sleeve, the both ends of spacing pipe are located steering sleeve outside, the center pin of spacing pipe is the same axis with the center pin of steering sleeve, be equipped with two claw assemblies on the inside wall of steering sleeve, two claw assemblies take steering sleeve's center pin as the center and take mirror image distribution, the cross section shape of spacing pipe is oval, be equipped with two rectangular hole second corresponding with claw assemblies on the spacing pipe, rectangular hole second's length direction is the same with spacing pipe's length direction, rectangular hole second's one of them long limit is located spacing pipe on the position department of keeping away from central axis, rectangular hole second's another long limit is located spacing pipe on the position department of being close to central axis, rectangular Kong Erwei is in steering sleeve, claw assembly's one end and steering sleeve fixed connection, the other end of the claw component penetrates through the rectangle Kong Erwei and is rotationally connected with the limit pipe through the rectangle hole II, one end of the first supporting plate is fixedly connected with one side, close to the fixed wheel and the sliding wheel, in the rectangle hole I, of the first supporting plate, the other end of the first supporting plate is far away from the fixed wheel and the sliding wheel and is fixedly connected with the second supporting plate, one end of the second supporting plate is fixedly connected with the first supporting plate, the other end of the second supporting plate is provided with a U-shaped supporting plate I, the outer side of the bottom of the first U-shaped supporting plate I is fixedly connected with the second supporting plate, the second U-shaped supporting plate I is arranged on the operating table and is fixedly connected with the operating table, the U-shaped supporting plate I is positioned on one side, close to the fixed wheel and the sliding wheel, the shape and the size of the first U-shaped supporting plate I are identical to the shape and the size of the second U-shaped supporting plate I, the inner side of the bottom of the second U-shaped supporting plate I is provided with a supporting plate III, one end of a third supporting plate is fixedly connected with one end of a first U-shaped supporting plate, the other end of the third supporting plate is in contact with one end of a limiting pipe, one end of the third supporting plate is fixedly connected with a second U-shaped supporting plate, the other end of the third supporting plate is in contact with the other end of the limiting pipe, one end of the third supporting plate, which is in contact with the limiting pipe, is provided with a second sliding connection with the second sliding groove, one end of the clamping block is in contact with the limiting pipe, a rubber pad is arranged on a contact surface of the clamping block, which is in contact with the limiting pipe, a tensioning spring is arranged in the second sliding groove, one end of the tensioning spring is fixedly connected with one clamping block, the other end of the tensioning spring is fixedly connected with the other clamping block, a steering sleeve is arranged between the third supporting plate, one end of the steering sleeve is arranged on the first U-shaped supporting plate, the other end of the steering sleeve is arranged on the second U-shaped supporting plate, racks are arranged on the outer side wall of the steering sleeve and between the first U-shaped supporting plate and the second U-shaped supporting plate, and a plurality of racks are uniformly distributed along the circumferential direction of the steering sleeve. In the initial state, the two claw assemblies are positioned at positions far away from the central shaft of the limiting pipe, and the clamping blocks always clamp the limiting pipe; an operator clamps the head end of the seamless steel pipe on a conveying device far away from the turnover mechanism to carry out forward conveying, then starts a first cylinder to push a sliding wheel to move to one side of a fixed wheel to enable the sliding wheel to move to a proper position, straightens two sides of the seamless steel pipe, and sequentially passes through a limiting pipe and the conveying device close to the turnover mechanism; when the tail end of the seamless steel tube is about to be separated from the conveying device far away from the turnover mechanism, starting the conveying device near the turnover mechanism, and clamping the seamless steel tube to continue forward conveying; when the tail end of the seamless steel pipe is straightened through the straightening area, a motor I is started, the steering sleeve is controlled to rotate by a certain angle through the meshing of the gear and the rack, so that the two claw assemblies are close to each other and are positioned at the position close to the central shaft of the limiting pipe and clamp the seamless steel pipe, at the moment, the conveying device close to the overturning mechanism loosens the seamless steel pipe, the motor I drives the steering sleeve and the limiting pipe to continue rotating by 90 degrees, the conveying device close to the overturning mechanism clamps the seamless steel pipe again, the motor I controls the steering sleeve to reversely rotate by a certain angle, so that the two claw assemblies are far away from each other and then return to the position far from the central shaft of the limiting pipe again and loosen the seamless steel pipe, and the conveying device close to the overturning mechanism reversely conveys the seamless steel pipe and straightens the other two sides of the seamless steel pipe; when the front end of the seamless steel pipe is about to be separated from the conveying device close to the turnover mechanism in reverse conveying, the conveying device far away from the turnover mechanism is started, and the seamless steel pipe is clamped to continue to be conveyed reversely until straightening is finished; the tension spring is convenient for the two clamping blocks to draw close to each other to clamp the limiting pipe; a rubber pad is arranged on the contact surface of the clamping block and the limiting pipe so as to increase the friction force between the clamping block and the outer side wall of the limiting pipe, and the two claw assemblies can be used for clamping or loosening the seamless steel pipe in a rotating manner; the contact surface of the clamping block or the rubber pad and the limiting pipe can be arranged into an arc shape so as to increase the contact area of the rubber pad and the limiting pipe.
Preferably, the jaw assembly comprises a jaw head, a telescopic shaft tube I and a telescopic shaft tube II, wherein the jaw head is positioned in the limiting tube, the jaw head is in a strip shape, the length of the jaw head is larger than that of the rectangular hole II, one side of the jaw head is provided with a plurality of rubber bumps, the other side of the jaw head is fixedly connected with the telescopic shaft tube I, one end of the telescopic shaft tube I is slidably connected with the telescopic shaft tube II, the other end of the telescopic shaft tube I penetrates through the rectangular hole II and the jaw head fixedly connected, one end of the telescopic shaft tube II is fixedly connected with the inner side wall of the steering sleeve, the other end of the telescopic shaft tube II is slidably connected with the telescopic shaft tube I, a spring I is arranged in the telescopic shaft tube I, one end of the spring I is positioned in the telescopic shaft tube I and is fixedly connected with the jaw head, and the other end of the spring I penetrates through the telescopic shaft tube I and is positioned in the telescopic shaft tube II and is fixedly connected with the inner side wall of the steering sleeve. The length of the claw heads is larger than that of the rectangular hole II, so that the claw heads on the two claw assemblies are convenient to draw together or separate away from each other along with the inner side wall of the limiting pipe, and the seamless steel pipe is clamped and loosened; when the claw head clamps the seamless steel tube, the first telescopic shaft tube is contacted with the long side of the second rectangular hole, and at the moment, the motor drives the steering sleeve to rotate by 90 degrees and drives the limiting tube to rotate, so that the seamless steel tube is driven to rotate by 90 degrees, and the other two sides of the seamless steel tube are straightened; the friction force between the claw head and the outer side wall of the seamless steel pipe is increased, so that the seamless steel pipe is more stable and is not easy to fall off when rotating, and the outer side wall of the seamless steel pipe is prevented from being damaged, so that the device is safe and reliable; the design of flexible central siphon first, flexible central siphon second and spring first is convenient for claw head slide along the inside wall of spacing pipe better, reasonable in design is simple.
Preferably, the operation table and the first sliding block are respectively provided with a plurality of rotating shafts, the fixed wheels are rotationally connected with the operation table through corresponding rotating shafts, the sliding wheels are rotationally connected with the sliding blocks through corresponding rotating shafts, limiting blocks are arranged at the top ends of the rotating shafts and rotationally connected with the rotating shafts, the fixed wheels and the sliding wheels are respectively positioned at the bottom ends of the corresponding rotating shafts, the second springs are sleeved on the rotating shafts, the fixed wheels and the sliding wheels are respectively connected with the corresponding limiting blocks through the second springs, the shape and the size of the fixed wheels are identical to those of the sliding wheels, the fixed wheels comprise an upper wheel and a lower wheel, the shape and the size of the upper wheel are identical to those of the lower wheel, the upper wheel and the lower wheel are in up-down symmetrical distribution, the upper wheel and the lower wheel are rotationally connected with the operation table through the rotating shafts, the bottom of the upper wheel is close to the lower wheel, the top of the upper wheel is far away from the lower wheel, and a guide inclined plane is arranged at the bottom edge of the upper wheel, and the top of the upper wheel is connected with the limiting blocks through the second springs. The fixed wheel and the sliding wheel clamp the seamless steel tube and straighten the seamless steel tube; the fixed wheel and the sliding wheel can rotate so as to facilitate the seamless steel pipe to be conveyed under the conveying of the conveying device; the second spring is convenient for the upper wheel to press the seamless steel tube; the guide inclined plane is convenient for the seamless steel pipe to be inserted between the upper wheel and the lower wheel, and the operation is convenient.
Preferably, the top of the operation table is provided with a U-shaped groove, the length direction of the U-shaped groove is the same as the width direction of the operation table, the fixed wheel and the sliding wheel are both positioned between the first rectangular hole and the U-shaped groove, the two ends of the operation table are both provided with mounting grooves, the conveying device is positioned in the mounting grooves and comprises a second sliding block and a fixed block, the second sliding block and the fixed block are both rectangular and parallel to each other, the length direction of the second sliding block and the length direction of the fixed block are the same as the length direction of the operation table, the two ends of the fixed block are fixedly connected with the inner side walls of the two sides of the mounting grooves respectively, the two sides of the mounting grooves are both provided with rectangular sliding holes, the two sliding blocks are in sliding connection with the mounting grooves through the rectangular sliding holes, the length direction of the rectangular sliding holes is the same as the width direction of the operation table, one end of the second sliding block on one conveying device penetrates through the corresponding rectangular sliding hole I, the other end of the second sliding block penetrates through the corresponding rectangular sliding hole to the outside of one end of the operating platform, one end of the second sliding block on the other conveying device penetrates through the corresponding rectangular sliding hole to be positioned in the U-shaped groove, the other end of the second sliding block penetrates through the outside of the other end of the operating platform, the second air cylinder is arranged in the U-shaped groove, the first rectangular hole and two ends of the operating platform, the second air cylinder is arranged on the side face of the rectangular sliding hole, the output end of the second air cylinder is fixedly connected with the end of the second sliding block, the second air cylinder in the first rectangular hole is positioned on one side, far away from the fixed wheel and the sliding wheel, of the second sliding block and the fixed block are respectively provided with a transmission assembly, the transmission assembly comprises a driven roller, a driving roller, a conveying belt and a second motor, the second motor on one transmission assembly is arranged at one end of the fixed block, and the driven roller on this transmission component rotates with the fixed block to be connected and is located the other end of fixed block, and the second motor on another transmission component installs in the one end of slider two, and the driven roller on this transmission component rotates with slider two to be connected and is located the other end of slider two, the output and the driving roller fixed connection of motor two, driving roller passes through conveyor belt and is connected with driven roller, conveyor belt's one end cup joints with driving roller, conveyor belt's the other end cup joints with driven roller, conveyor belt is equipped with a plurality of evenly distributed's protruding muscle, the shape of protruding muscle is rectangular shape, the material that protruding muscle adopted is rubber. The design of the conveying device is beneficial to conveying the seamless steel pipe with large curvature, and the application range is wide; the second cylinder drives the sliding block to close to the fixed block through the output end to clamp the seamless steel pipe, and the second motor on the fixed block and the second motor on the sliding block drive the conveying belt to rotate in opposite directions, so that the seamless steel pipe is conveyed, and the design is reasonable; the convex ribs are made of rubber, so that friction between the conveying belt and the seamless steel pipe is increased, and the seamless steel pipe is convenient to convey.
The beneficial effects of the invention are as follows: the strength of the automobile transmission shaft is greatly enhanced; the full-directional straightening is realized, the product quality is improved, manual operation is not needed in the whole process, and the automation degree is greatly improved, so that the working efficiency is improved; the design of the conveying device is beneficial to conveying the seamless steel pipe with large curvature, and the application range is wide; safe and reliable, convenient operation and reasonable design.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a right side view of the second flange of FIG. 1;
FIG. 3 is a schematic view of the construction of the leveler;
fig. 4 is an enlarged view of the structure at a in fig. 3;
FIG. 5 is an internal structural view of the steering sleeve;
fig. 6 is an enlarged view of the structure at B in fig. 3.
In the figure: 1. the seamless steel pipe comprises a first seamless steel pipe body, a second seamless steel pipe body, a third telescopic sleeve, a fourth flange, a fifth connecting shaft, a fourth fork-shaped frame, a fourth cross shaft, a fourth flange, a fourth connecting block, a fourth 11 through hole, a fourth shaft, a fourth 14 rotating rod, a fourth 15 convex strip, a fourth 16 concave groove, a fourth 17 operating table, a fourth 18 conveying device, a fourth 19 tilting mechanism, a fourth 20 straightening area, a fourth 21 fixed wheel, a fourth 22 sliding wheel, a fourth 23 sliding groove, a fourth 24 cylinder, a fourth 25 sliding block, a fourth 26 rectangular hole, a fourth 27 supporting plate, a fourth 28 motor, a fourth 29 gear, a fourth 30 rack, a fourth 31 steering sleeve, a fourth limiting pipe, the hydraulic brake system comprises a jaw assembly, a rectangular hole II, a supporting plate II, a U-shaped supporting plate I, a U-shaped supporting plate II, a supporting plate III, a sliding groove II, a clamping block II, a jaw head II, a telescopic shaft tube I, a telescopic shaft tube II, a rubber lug II, a spring I, a limiting block II, a spring II, a upper wheel 49, a lower wheel 50, a guide inclined plane 51, a U-shaped groove 52, a mounting groove 53, a sliding block II, a fixing block 54, a rectangular sliding hole 55, a cylinder II, a transmission assembly 57, a driven roller 58, a driving roller 59, a conveying belt 60, a motor II and a convex rib 62.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
In the embodiment shown in fig. 1, a cold-rolled seamless steel tube for an automobile transmission shaft comprises a seamless steel tube body 1, a seamless steel tube body 2, a telescopic sleeve 3 and a flange 4, wherein the seamless steel tube body 2 is positioned in the seamless steel tube body 1, one end of the seamless steel tube body 1 is provided with a connecting shaft 5, one end of the connecting shaft 5 is connected with the telescopic sleeve 3, the other end of the connecting shaft 5 is fixedly connected with the seamless steel tube body 1 and the seamless steel tube body 2 respectively, the other end of the seamless steel tube body 1 is provided with a fork-shaped frame 6, the fork-shaped frame 6 is in a U-shaped fork shape, one end of the seamless steel tube body 1 and one end of the seamless steel tube body 2 are fixedly connected with the connecting shaft 5, the other end of the seamless steel tube body 1 is fixedly connected with the fork-shaped frame 6, the other end of the seamless steel tube body 2 is detachably connected with the fork-shaped frame 6, a cross shaft 7 is arranged in the fork-shaped frame 6, the cross shaft 7 is in threaded connection with the upper end and the lower end of the fork-shaped frame 6, the fork-shaped frame 6 is connected with a flange 8 matched with the flange 4 through the cross shaft 7, and the flange 4 is in threaded connection with the flange 8.
As shown in fig. 1, an external spline is arranged on a connecting shaft 5, an internal spline matched with the external spline is arranged in a telescopic sleeve 3, one end of the connecting shaft 5 is installed in the telescopic sleeve 3 in a matched manner through the external spline and the internal spline, the other end of the connecting shaft 5 is fixedly connected with a first seamless steel pipe body 1 and is provided with a first connecting block 9, the first connecting block 9 is positioned in the first seamless steel pipe body 1, the connecting shaft 5 is fixedly connected with a second seamless steel pipe body 2 through the first connecting block 9, the open end of a fork-shaped frame 6 is connected with a second flange 8 through a cross shaft 7, the bottom end of the fork-shaped frame 6 is fixedly connected with the first seamless steel pipe body 1 and is provided with a second connecting block 10, the second connecting block 10 is positioned in the first seamless steel pipe body 1, an installation groove matched with the second seamless steel pipe body 2 is arranged in the second connecting block 10 sleeved on the fork-shaped frame 6 in a matched manner, and a plurality of through holes 11 are uniformly distributed in the second seamless steel pipe body 2.
As shown in fig. 1, the cross shaft 7 comprises a first shaft 12 and a second shaft 13, the first shaft 12 and the second shaft 13 are fixedly connected, the first shaft 12 and the second shaft 13 are mutually perpendicular and are in a cross shape, two ends of the first shaft 12 are respectively in threaded connection with the upper end and the lower end of the fork-shaped frame 6, two rotating rods 14 are arranged on one side of the flange II 8, the flange II 8 is respectively in rotating connection with two ends of the second shaft 13 through the two rotating rods 14, a plurality of raised strips 15 are arranged on the other side of the flange II 8, and a plurality of grooves 16 matched with the raised strips 15 are formed in the flange I4.
As shown in fig. 1, 2 and 3, the invention also provides a preparation process of the cold-rolled seamless steel tube for the automobile transmission shaft, which comprises the following steps:
step one, performing three-roller continuous rolling on a billet, and performing sizing test after extrusion;
step two, detecting whether the outer surface has cracks or not, cutting off a billet after the detection is qualified and the outer surface has no cracks, and carrying out centering treatment through a puncher;
step three, heating the steel billet to carry out hot rolling perforation, and producing the steel billet into a blank pipe;
step four, pickling the steel billet by using liquid, observing whether a large number of bubbles are generated on the surface of the steel billet, and if no large number of bubbles are generated, enabling the quality of the steel billet to reach the standard;
step five, performing preliminary cold rolling treatment on the steel billet, performing heat treatment after cold rolling, reducing the hardness of the pipe after processing, and reducing the structure of the steel pipe;
Step six, straightening the billet after heat treatment;
cutting off the head and the tail of the billet, and chamfering the two ends of the billet;
step eight, carrying out acid-phosphorus soap lubrication treatment on the steel billet, and producing a finished product by using a two-roll cold rolling mill;
step nine, straightening the steel pipe by adopting a straightener;
step ten, the steel pipe is subjected to oil removal treatment in the oil removal cylinder to remove greasy dirt;
step eleven, the steel pipe is immersed in rust-preventive oil to prevent rust;
step twelve, performing eddy current and ultrasonic flaw detection treatment, checking defects on the inner surface and the outer surface of the steel pipe, and detecting tolerance dimensions by a micrometer and an internal diameter meter to respectively form a qualified seamless steel pipe body 1 and a seamless steel pipe body 2, wherein the diameter of the seamless steel pipe body 2 is smaller than that of the seamless steel pipe body 1;
thirteenth, drilling a plurality of uniformly distributed through holes 11 through a drilling machine by the seamless steel tube body II 2, and chamfering the edges of the through holes 11;
fourteen, fixedly connecting one end of the seamless steel tube body II 2 with the first connecting block 9 on the connecting shaft 5 through welding, fixedly connecting one end of the seamless steel tube body II 1 with the connecting shaft 5 through welding, sleeving the fork-shaped frame 6 at the other end of the seamless steel tube body II 2 through the first connecting block 10, and finally fixedly connecting the fork-shaped frame 6 with the other end of the seamless steel tube body II 1 through welding.
As shown in fig. 3, the straightening machine comprises an operation table 17, the operation table 17 is in a cuboid shape, a plurality of supporting columns which are uniformly distributed are arranged at the bottom of the operation table 17, conveying devices 18 are arranged at two ends of the operation table 17, a turnover mechanism 19 and a straightening area 20 are arranged in the middle of the operation table 17, the turnover mechanism 19 is positioned between one of the conveying devices 18 and the straightening area 20, a plurality of fixed wheels 21 corresponding to the conveying devices 18 and a plurality of sliding wheels 22 corresponding to the conveying devices 18 are arranged in the straightening area 20, the fixed wheels 21 are uniformly distributed along the length direction of the operation table 17, the fixed wheels 21 are mounted on the top of the operation table 17 and are rotatably connected with the operation table 17, a sliding groove I23 is arranged on the side surface of the fixed wheels 21, a cylinder I24 is arranged on one side of the sliding groove I23, the fixed wheels 21 are positioned on the other side corresponding to the sliding groove I23, a sliding block I25 is arranged in the sliding groove I23, the output end of the cylinder I24 is fixedly connected with the sliding block I25, the sliding block I25 is slidingly connected with the sliding groove I23 along the width direction of the operation table 17, the sliding wheels 22 are uniformly distributed along the length direction of the operation table 17, and the sliding wheels 22 are uniformly distributed along the length direction of the operation table 17.
As shown in fig. 3, the operation table 17 is provided with a rectangular hole one 26, one side of the rectangular hole one 26 is close to the fixed wheel 21 and the sliding wheel 22, the other side corresponding to the rectangular hole one 26 is far away from the fixed wheel 21 and the sliding wheel 22, as shown in fig. 4, a support plate one 27 is arranged in the rectangular hole one 26, the support plate one 27 is arranged on one side, close to the fixed wheel 21 and the sliding wheel 22, of the rectangular hole one 26, a motor one 28 is arranged on the support plate one 27, a gear 29 is arranged at the output end of the motor one 28, a plurality of racks 30 matched with the gear 29 are arranged on the turnover mechanism 19, and the gears 29 are meshed with the racks 30.
As shown in fig. 4 and 5, the turnover mechanism 19 includes a steering sleeve 31 and a limiting tube 32, the middle part of the limiting tube 32 is located in the steering sleeve 31, both ends of the limiting tube 32 are located outside the steering sleeve 31, the central axis of the limiting tube 32 and the central axis of the steering sleeve 31 are the same axis, two jaw assemblies 33 are arranged on the inner side wall of the steering sleeve 31, the two jaw assemblies 33 are distributed in mirror image with the central axis of the steering sleeve 31 as the center, the cross section of the limiting tube 32 is elliptical, two rectangular holes 34 corresponding to the jaw assemblies 33 are arranged on the limiting tube 32, the length direction of the rectangular holes 34 is the same as the length direction of the limiting tube 32, one long side of the rectangular holes 34 is located at a position on the limiting tube 32 away from the central axis thereof, the other long side of the rectangular holes 34 is located at a position on the limiting tube 32 near the central axis thereof, the rectangular hole II 34 is positioned in the steering sleeve 31, one end of the claw assembly 33 is fixedly connected with the steering sleeve 31, the other end of the claw assembly 33 penetrates through the rectangular hole II 34 and is positioned in the limiting pipe 32, the claw assembly 33 on the steering sleeve 31 is rotationally connected with the limiting pipe 32 through the rectangular hole II 34, one end of the first supporting plate 27 is fixedly connected with one side, close to the fixed wheel 21 and the sliding wheel 22, in the rectangular hole II 26, the other end of the first supporting plate 27 is far away from the fixed wheel 21 and the sliding wheel 22 and is fixedly connected with the second supporting plate 35, one end of the second supporting plate 35 is fixedly connected with the first supporting plate 27, the other end of the second supporting plate 35 is provided with the first U-shaped supporting plate 36, the outer side of the bottom of the first U-shaped supporting plate 36 is fixedly connected with the second supporting plate 35, the operating table 17 is provided with the second U-shaped supporting plate 37, the outer side of the bottom of the second U-shaped supporting plate 37 is fixedly connected with the operating table 17, the second U-shaped supporting plate 37 is positioned at one side, close to the fixed wheel 21 and the sliding wheel 22, the shape and the size of the U-shaped support plate I36 are the same as those of the U-shaped support plate II 37, the bottom inner side of the U-shaped support plate I36 and the bottom inner side of the U-shaped support plate II 37 are respectively provided with a support plate III 38, one end of one support plate III 38 is fixedly connected with the U-shaped support plate I36, the other end of the support plate III is contacted with one end of the limiting pipe 32, one end of the other support plate III 38 is fixedly connected with the U-shaped support plate II 37, the other end of the support plate III is contacted with the other end of the limiting pipe 32, one end of the support plate III 38 contacted with the limiting pipe 32 is provided with a slide groove II 39 and two clamping blocks 40, the two clamping blocks 40 are respectively positioned at two sides of the limiting pipe 32, one end of the clamping block 40 is positioned in the slide groove II 39 and is in sliding connection with the slide groove II 39, the other end of the clamping block 40 is contacted with the limiting pipe 32, a rubber pad is arranged on the contact surface of the clamping block 40 contacted with the limiting pipe 32, a tensioning spring is arranged in the second sliding groove 39, one end of the tensioning spring is fixedly connected with one clamping block 40, the other end of the tensioning spring is fixedly connected with the other clamping block 40, the steering sleeve 31 is positioned between the three supporting plates 38, one end of the steering sleeve 31 is arranged on the first U-shaped supporting plate 36, the other end of the steering sleeve 31 is arranged on the second U-shaped supporting plate 37, the racks 30 are positioned on the outer side wall of the steering sleeve 31 and between the first U-shaped supporting plate 36 and the second U-shaped supporting plate 37, and a plurality of racks 30 are uniformly distributed along the circumferential direction of the steering sleeve 31.
As shown in fig. 5, the jaw assembly 33 includes a jaw 41, a first telescopic shaft tube 42 and a second telescopic shaft tube 43, the jaw 41 is located in the limiting tube 32, the jaw 41 is in a strip shape, the length of the jaw 41 is greater than that of the rectangular hole 34, one side of the jaw 41 is provided with a plurality of rubber bumps 44, the other side of the jaw 41 is fixedly connected with the first telescopic shaft tube 42, one end of the first telescopic shaft tube 42 is slidably connected with the second telescopic shaft tube 43, the other end of the first telescopic shaft tube 42 penetrates through the rectangular hole 34 and is fixedly connected with the jaw 41, one end of the second telescopic shaft tube 43 is fixedly connected with the inner side wall of the steering sleeve 31, the other end of the second telescopic shaft tube 43 is slidably connected with the first telescopic shaft tube 42, a first spring 45 is arranged in the first telescopic shaft tube 42, one end of the first spring 45 is located in the first telescopic shaft tube 42 and is fixedly connected with the jaw 41, and the other end of the first spring 45 penetrates through the first telescopic shaft tube 43 and is fixedly connected with the inner side wall of the steering sleeve 31.
As shown in fig. 1, the operation table 17 and the first slider 25 are respectively provided with a plurality of rotating shafts, the fixed wheel 21 is rotationally connected with the operation table 17 through corresponding rotating shafts, the sliding wheel 22 is rotationally connected with the first slider 25 through corresponding rotating shafts, as shown in fig. 6, the top end of each rotating shaft is provided with a limiting block 46, each limiting block 46 is rotationally connected with the corresponding rotating shaft, the fixed wheel 21 and the sliding wheel 22 are respectively positioned at the bottom end of the corresponding rotating shaft, the rotating shafts are sleeved with a second spring 47, each fixed wheel 21 and each sliding wheel 22 are respectively connected with the corresponding limiting block 46 through the second spring 47, the shape and the size of the fixed wheel 21 are identical to the shape and the size of the sliding wheel 22, each fixed wheel 21 comprises an upper wheel 48 and a lower wheel 49, the shape and the size of the upper wheel 48 are identical to the shape and the size of the lower wheel 49, the upper wheel 48 and the lower wheel 49 are in up-down symmetrical distribution, the upper wheel 48 and the lower wheel 49 are respectively rotationally connected with the operation table 17 through the rotating shafts, the bottom of the upper wheel 48 is close to the lower wheel 49, the top of the upper wheel 48 is far away from the lower wheel 49, and the bottom edge of the upper wheel 48 is provided with a guide inclined surface 50, and the top of the upper wheel 48 is respectively connected with the limiting block 46 through the second spring 47.
As shown in FIG. 1, the top of the operation table 17 is provided with a U-shaped groove 51, the length direction of the U-shaped groove 51 is the same as the width direction of the operation table 17, the fixed wheel 21 and the sliding wheel 22 are both positioned between the rectangular hole I26 and the U-shaped groove 51, both ends of the operation table 17 are provided with mounting grooves 52, the conveying device 18 is positioned in the mounting grooves 52, the conveying device 18 comprises a sliding block II 53 and a fixed block 54, the sliding block II 53 and the fixed block 54 are both rectangular, the sliding block II 53 and the fixed block 54 are mutually parallel, the length direction of the sliding block II 53 and the fixed block 54 are the same as the length direction of the operation table 17, both ends of the fixed block 54 are respectively fixedly connected with both side inner side walls of the mounting grooves 52, both sides of the mounting grooves 52 are provided with rectangular sliding holes 55, the sliding block II 53 is in sliding connection with the mounting grooves 52 through the rectangular sliding holes 55, the rectangular sliding holes 55 are positioned on the side surfaces of the fixed block 54, the length direction of the rectangular sliding hole 55 is the same as the width direction of the operation table 17, one end of the second sliding block 53 on one conveying device 18 penetrates through the corresponding rectangular sliding hole 55 to be positioned in the first rectangular hole 26, the other end of the second sliding block 53 on the other conveying device 18 penetrates through the corresponding rectangular sliding hole 55 to be positioned outside one end of the operation table 17, one end of the second sliding block 53 on the other conveying device 18 penetrates through the corresponding rectangular sliding hole 55 to be positioned in the U-shaped groove 51, the other end of the second sliding block 55 penetrates through the corresponding rectangular sliding hole 55 to be positioned outside the other end of the operation table 17, the second air cylinder 56 is arranged in the U-shaped groove 51, the first rectangular hole 26 and both ends of the operation table 17, the second air cylinder 56 is arranged on the side surface of the rectangular sliding hole 55, the output end of the second air cylinder 56 is fixedly connected with the end of the corresponding second sliding block 53, the second air cylinder 56 in the first rectangular hole 26 is positioned on one side of the rectangular hole 26 away from the fixed wheel 21 and the sliding wheel 22, the second slider 53 and the fixed block 54 are respectively provided with a transmission component 57, the transmission component 57 comprises a driven roller 58, a driving roller 59, a conveying belt 60 and a second motor 61, the second motor 61 on one transmission component 57 is arranged at one end of the fixed block 54, the driven roller 58 on the transmission component 57 is rotationally connected with the fixed block 54 and is positioned at the other end of the fixed block 54, the second motor 61 on the other transmission component 57 is arranged at one end of the second slider 53, the driven roller 58 on the transmission component 57 is rotationally connected with the second slider 53 and is positioned at the other end of the second slider 53, the output end of the second motor 61 is fixedly connected with the driving roller 59, the driving roller 59 is connected with the driven roller 58 through the conveying belt 60, one end of the conveying belt 60 is sleeved with the driving roller 59, the other end of the conveying belt 60 is sleeved with the driven roller 58, a plurality of evenly distributed convex ribs 62 are arranged on the conveying belt 60, the convex ribs 62 are in a strip shape, and materials adopted by the convex ribs 62 are rubber.
Working principle: in the initial state, the claw heads 41 on the two claw assemblies 33 are positioned at positions far away from the central shaft of the limiting pipe 46, and the clamping blocks 40 always clamp the limiting pipe 46; an operator places the head end of the seamless steel pipe on the conveying device 18 far away from the turnover mechanism 19, the second air cylinder 56 drives the second sliding block 53 to close towards the fixed block 54 through the output end to clamp the seamless steel pipe, the second motor 61 on the fixed block 54 and the second motor 61 on the second sliding block 53 drive the conveying belt 60 to rotate in opposite directions to carry out forward conveying, then the first air cylinder 24 is started, the sliding wheel 22 is pushed to move to one side of the fixed wheel 21 to enable the sliding wheel 22 to move to a proper position, and after two sides of the seamless steel pipe are straightened, the two sides sequentially pass through the limiting pipe 46 and the conveying device 18 close to the turnover mechanism 19; when the tail end of the seamless steel tube is about to be separated from the conveying device 18 far away from the turnover mechanism 19, starting the conveying device 18 near the turnover mechanism 19, and clamping the seamless steel tube to continue forward conveying; when the tail end of the seamless steel pipe is straightened through the straightening area 20, a motor I28 is started, the steering sleeve 31 is controlled to rotate by a certain angle through the engagement of the gear 29 and the rack 30, so that the claw heads 41 on the two claw assemblies 33 are mutually close and then are positioned at the position close to the central axis of the limiting pipe 46 and clamp the seamless steel pipe, at the moment, the telescopic shaft pipe I42 is contacted with the long side of the rectangular hole II 34, the conveying device 18 close to the turnover mechanism 19 loosens the seamless steel pipe, the motor I28 drives the steering sleeve 31 and the limiting pipe 46 to continuously rotate for 90 degrees, thereby driving the seamless steel pipe to rotate for 90 degrees, the conveying device 18 close to the turnover mechanism 19 clamps the seamless steel pipe again, the motor I28 controls the steering sleeve 31 to reversely rotate by a certain angle, so that the claw heads 41 on the two claw assemblies 33 are mutually far away from each other and then return to the position far away from the central axis of the limiting pipe 46 again and loosen the seamless steel pipe, and the conveying device 18 close to the turnover mechanism 19 reversely conveys the seamless steel pipe, and straightens the other two sides of the seamless steel pipe; when the front end of the seamless steel pipe is about to be separated from the conveying device 18 close to the turnover mechanism 19 in reverse conveying, the conveying device 18 far away from the turnover mechanism 19 is started, and the seamless steel pipe is clamped to continue to be conveyed reversely until straightening is finished.

Claims (5)

1. The cold-rolled seamless steel tube for the automobile transmission shaft is characterized by comprising a first seamless steel tube body (1), a second seamless steel tube body (2), a telescopic sleeve (3) and a first flange (4), wherein the second seamless steel tube body (2) is positioned in the first seamless steel tube body (1), one end of the first seamless steel tube body (1) is provided with a connecting shaft (5), one end of the connecting shaft (5) is connected with the telescopic sleeve (3), the other end of the connecting shaft (5) is fixedly connected with the first seamless steel tube body (1) and the second seamless steel tube body (2) respectively, the other end of the first seamless steel tube body (1) is provided with a fork-shaped frame (6), the shape of the fork-shaped frame (6) is U-shaped fork-shaped, one end of the first seamless steel tube body (1) and one end of the second seamless steel tube body (2) are fixedly connected with the connecting shaft (5), the other end of the first seamless steel tube body (1) is detachably connected with the fork-shaped frame (6), the other end of the second seamless steel tube body (2) is internally provided with a fork-shaped frame (6) and the two ends of the first cross-shaped frame (7) are connected with the first flange (8) through the first flange (8), the flange I (4) is connected with the flange II (8) through threads, an external spline is arranged on the connecting shaft (5), an internal spline matched with the external spline is arranged in the telescopic sleeve (3), one end of the connecting shaft (5) is installed in the telescopic sleeve (3) through the matching of the external spline and the internal spline, the other end of the connecting shaft (5) is fixedly connected with the seamless steel pipe body I (1) and is provided with a connecting block I (9), the connecting block I (9) is positioned in the seamless steel pipe body I (1), the connecting shaft (5) is fixedly connected with the seamless steel pipe body II (2) through the connecting block I (9), the opening end of the fork frame (6) is connected with the flange II (8) through a cross shaft (7), the bottom end of the fork frame (6) is fixedly connected with the seamless steel pipe body I (1) and is provided with a connecting block II (10), the connecting block II (10) is positioned in the seamless steel pipe body I (1), a mounting groove matched with the seamless steel pipe body II (2) is formed in the connecting block II (10), and the fork frame II (6) is uniformly distributed on the seamless steel pipe II (2) and is provided with a plurality of through holes (11) which are uniformly distributed on the seamless steel pipe II (2); the preparation process of the cold-rolled seamless steel tube for the automobile transmission shaft comprises the following steps of:
Step one, performing three-roller continuous rolling on a billet, and performing sizing test after extrusion;
step two, detecting whether the outer surface has cracks or not, cutting off a billet after the detection is qualified and the outer surface has no cracks, and carrying out centering treatment through a puncher;
step three, heating the steel billet to carry out hot rolling perforation, and producing the steel billet into a blank pipe;
step four, pickling the steel billet by using liquid, observing whether a large number of bubbles are generated on the surface of the steel billet, and if no large number of bubbles are generated, enabling the quality of the steel billet to reach the standard;
step five, performing preliminary cold rolling treatment on the steel billet, performing heat treatment after cold rolling, reducing the hardness of the pipe after processing, and reducing the structure of the steel pipe;
step six, straightening the billet after heat treatment;
cutting off the head and the tail of the billet, and chamfering the two ends of the billet;
step eight, carrying out acid-phosphorus soap lubrication treatment on the steel billet, and producing a finished product by using a two-roll cold rolling mill;
step nine, straightening the steel pipe by adopting a straightener;
step ten, the steel pipe is subjected to oil removal treatment in the oil removal cylinder to remove greasy dirt;
step eleven, the steel pipe is immersed in rust-preventive oil to prevent rust;
step twelve, performing eddy current and ultrasonic flaw detection treatment, checking defects on the inner surface and the outer surface of the steel pipe, detecting tolerance sizes by a micrometer and an internal diameter meter, and respectively forming a qualified seamless steel pipe body I (1) and a seamless steel pipe body II (2), wherein the diameter of the seamless steel pipe body II (2) is smaller than that of the seamless steel pipe body I (1);
Thirteenth, drilling a plurality of uniformly distributed through holes (11) through a drilling machine by the seamless steel tube body II (2), and chamfering the edges of the through holes (11);
fourteen, fixedly connecting one end of the seamless steel tube body II (2) with a connecting block I (9) on a connecting shaft (5) through welding, fixedly connecting one end of the seamless steel tube body I (1) with the connecting shaft (5) through welding, sleeving a fork frame (6) on the other end of the seamless steel tube body II (2) through a connecting block II (10), and finally fixedly connecting the fork frame (6) with the other end of the seamless steel tube body I (1) through welding;
the straightening machine comprises an operation table (17), the shape of the operation table (17) is cuboid, a plurality of supporting columns which are uniformly distributed are arranged at the bottom of the operation table (17), conveying devices (18) are arranged at two ends of the operation table (17), a turnover mechanism (19) and a straightening area (20) are arranged in the middle of the operation table (17), the turnover mechanism (19) is positioned between one conveying device (18) and the straightening area (20), a plurality of fixed wheels (21) corresponding to the conveying devices (18) and a plurality of sliding wheels (22) corresponding to the conveying devices (18) are arranged in the straightening area (20), the fixed wheels (21) are uniformly distributed along the length direction of the operation table (17), the fixed wheels (21) are arranged at the top of the operation table (17) and are rotatably connected with the operation table (17), one side of the fixed wheels (21) is provided with a sliding groove one (23), one side of the sliding groove one (23) is provided with a cylinder one (24), the fixed wheels (21) are positioned at the other side of the sliding groove one (23), one sliding groove (25) is arranged in the sliding groove one side (23), one sliding groove (25) is fixedly connected with one sliding end (25) of the sliding groove (25) along the sliding direction, a plurality of sliding wheels (22) are arranged on the first sliding block (25) and are uniformly distributed along the length direction of the operating platform (17), and the sliding wheels (22) are rotationally connected with the first sliding block (25); the operation table (17) is provided with a rectangular hole I (26), one side of the rectangular hole I (26) is close to the fixed wheel (21) and the sliding wheel (22), the other side corresponding to the rectangular hole I (26) is far away from the fixed wheel (21) and the sliding wheel (22), a supporting plate I (27) is arranged in the rectangular hole I (26), the supporting plate I (27) is arranged on one side, close to the fixed wheel (21) and the sliding wheel (22), of the rectangular hole I (26), a motor I (28) is arranged on the supporting plate I (27), a gear (29) is arranged at the output end of the motor I (28), a plurality of racks (30) matched with the gear (29) are arranged on the turnover mechanism (19), and the gears (29) are meshed with the racks (30); the turning mechanism (19) comprises a steering sleeve (31) and a limiting pipe (32), the middle part of the limiting pipe (32) is positioned in the steering sleeve (31), the two ends of the limiting pipe (32) are both positioned outside the steering sleeve (31), the central axis of the limiting pipe (32) and the central axis of the steering sleeve (31) are the same axis, two claw assemblies (33) are arranged on the inner side wall of the steering sleeve (31), the two claw assemblies (33) take the central axis of the steering sleeve (31) as the center and are distributed in a mirror image mode, the cross section of the limiting pipe (32) is elliptical, two rectangular holes (34) corresponding to the claw assemblies (33) are formed in the limiting pipe (32), the length direction of the rectangular holes (34) is the same as the length direction of the limiting pipe (32), one long side of the rectangular holes (34) is positioned at the position, far away from the central axis, on the limiting pipe (32), the other long side of the rectangular holes (34) is positioned at the position, close to the central axis, on the limiting pipe (32), of the rectangular holes (34) and the other long side, of the rectangular holes (34) are positioned at the position, where the rectangular holes (34) are positioned at the position, of the limiting pipe (32) and are positioned at the position, where the central axis, and are positioned, and penetrate through the rectangular holes (33) and are fixedly connected with the claw assemblies (33) and one end (33), the jaw assembly (33) on the steering sleeve (31) is rotationally connected with the limit pipe (32) through a rectangular hole II (34), one end of the first supporting plate (27) is fixedly connected with one side, close to the fixed wheel (21) and the sliding wheel (22), in the rectangular hole I (26), the other end of the first supporting plate (27) is far away from the fixed wheel (21) and the sliding wheel (22) and is fixedly connected with a second supporting plate (35), one end of the second supporting plate (35) is fixedly connected with the first supporting plate (27), the other end of the second supporting plate (35) is provided with a first U-shaped supporting plate (36), the outer side of the bottom of the first U-shaped supporting plate (36) is fixedly connected with the second supporting plate (35), the operating platform (17) is provided with a second U-shaped supporting plate (37), the outer side of the bottom of the second U-shaped supporting plate (37) is fixedly connected with the operating platform (17), the second U-shaped supporting plate (37) is positioned on one side, close to the fixed wheel (21) and the sliding wheel (22), the inner side of the second U-shaped supporting plate (36) is in the same shape as the first U-shaped supporting plate (37), the inner side of the first U-shaped supporting plate (36) is fixedly connected with the first U-shaped supporting plate (38), the other end of the third supporting plate (38) is fixedly connected with one end of the limiting pipe (32), one end of the third supporting plate is fixedly connected with the second U-shaped supporting plate (37), the other end of the third supporting plate is contacted with the other end of the limiting pipe (32), one end of the third supporting plate (38) contacted with the limiting pipe (32) is provided with a second sliding groove (39) and two clamping blocks (40), the two clamping blocks (40) are respectively positioned at two sides of the limiting pipe (32), one end of the clamping block (40) is positioned in the second sliding groove (39) and is in sliding connection with the second sliding groove (39), the other end of the clamping block (40) is contacted with the limiting pipe (32), a rubber pad is arranged on a contact surface of the clamping block (40) contacted with the limiting pipe (32), a tensioning spring is arranged in the second sliding groove (39), one end of the tensioning spring is fixedly connected with one of the second sliding groove (40), the other end of the tensioning spring is fixedly connected with the other clamping block (40), the steering sleeve (31) is positioned between the third supporting plate (38), one end of the steering sleeve (31) is positioned on the first U-shaped supporting plate (36) and the second steering sleeve (36) is positioned on the U-shaped supporting plate (37) and is positioned on the second U-shaped supporting plate (37), the racks (30) are uniformly distributed along the circumferential direction of the steering sleeve (31).
2. The cold-rolled seamless steel tube for the automobile transmission shaft according to claim 1, wherein the cross shaft (7) comprises a first shaft (12) and a second shaft (13), the first shaft (12) and the second shaft (13) are fixedly connected, the first shaft (12) and the second shaft (13) are mutually perpendicular and are cross-shaped, two ends of the first shaft (12) are respectively in threaded connection with the upper end and the lower end of the fork frame (6), two rotating rods (14) are arranged on one side of the second flange (8), the second flange (8) is respectively in rotary connection with two ends of the second shaft (13) through the two rotating rods (14), a plurality of raised strips (15) are arranged on the other side of the second flange (8), and a plurality of grooves (16) matched with the raised strips (15) are formed in the first flange (4).
3. The cold-rolled seamless steel tube for the automobile transmission shaft according to claim 1, wherein the claw assembly (33) comprises a claw head (41), a first telescopic shaft tube (42) and a second telescopic shaft tube (43), the claw head (41) is positioned in the limiting tube (32), the claw head (41) is in a strip shape, the length of the claw head (41) is larger than that of the second rectangular hole (34), a plurality of rubber bumps (44) are arranged on one side of the claw head (41), the other side of the claw head (41) is fixedly connected with the first telescopic shaft tube (42), one end of the first telescopic shaft tube (42) is in sliding connection with the second telescopic shaft tube (43), the other end of the first telescopic shaft tube (42) penetrates through the second rectangular hole (34) and is fixedly connected with the first telescopic shaft tube (41), one end of the second telescopic shaft tube (43) is in sliding connection with the first telescopic shaft tube (42), a first spring (45) is arranged in the first telescopic shaft tube (42), one end of the first spring (45) is fixedly connected with the first telescopic shaft tube (41), the other end of the first spring (45) penetrates through the first telescopic shaft tube (42) and is positioned in the second telescopic shaft tube (43) and fixedly connected with the inner side wall of the steering sleeve (31).
4. The cold-rolled seamless steel tube for the automobile transmission shaft according to claim 1, 2 or 3, wherein a plurality of rotating shafts are arranged on the operating platform (17) and the first sliding block (25), the fixed wheel (21) is rotationally connected with the operating platform (17) through the corresponding rotating shaft, the sliding wheel (22) is rotationally connected with the first sliding block (25) through the corresponding rotating shaft, a limiting block (46) is arranged at the top end of the rotating shaft, the limiting block (46) is rotationally connected with the rotating shaft, the fixed wheel (21) and the sliding wheel (22) are both positioned at the bottom end of the corresponding rotating shaft, a second spring (47) is sleeved on the rotating shaft, the fixed wheel (21) and the sliding wheel (22) are connected with corresponding limiting blocks (46) through springs II (47), the shape and the size of the fixed wheel (21) are the same as those of the sliding wheel (22), the fixed wheel (21) comprises an upper wheel (48) and a lower wheel (49), the shape and the size of the upper wheel (48) are the same as those of the lower wheel (49), the upper wheel (48) and the lower wheel (49) are distributed symmetrically up and down, the upper wheel (48) and the lower wheel (49) are both connected with an operating platform (17) in a rotating way through a rotating shaft, the bottom of the upper wheel (48) is close to the lower wheel (49), the top of the upper wheel (48) is far away from the lower wheel (49), the bottom edge of the upper wheel (48) is provided with a guide inclined plane (50), and the top of the upper wheel (48) is connected with a limiting block (46) through a second spring (47).
5. The cold-rolled seamless steel tube for the automobile transmission shaft according to claim 1, 2 or 3, wherein the top of the operation table (17) is provided with a U-shaped groove (51), the length direction of the U-shaped groove (51) is the same as the width direction of the operation table (17), the fixed wheel (21) and the sliding wheel (22) are both positioned between the rectangular hole I (26) and the U-shaped groove (51), both ends of the operation table (17) are provided with mounting grooves (52), the conveying device (18) is positioned in the mounting grooves (52), the conveying device (18) comprises a slider II (53) and a fixed block (54), the shape of the slider II (53) and the shape of the fixed block (54) are cuboid, the length direction of the slider II (53) and the length direction of the fixed block (54) are the same as the length direction of the operation table (17), both ends of the fixed block (54) are respectively connected with the rectangular holes (52) on both sides of the mounting grooves (52), the two sides of the fixed block II (53) are connected with the rectangular hole (55) by the rectangular hole II (55), the length direction of the rectangular sliding hole (55) is the same as the width direction of the operation table (17), one end of a sliding block II (53) on one conveying device (18) penetrates through the corresponding rectangular sliding hole (55) to be positioned in a rectangular hole I (26), the other end of the sliding block II (53) penetrates through the corresponding rectangular sliding hole (55) to be positioned outside one end of the operation table (17), one end of the sliding block II (53) on the other conveying device (18) penetrates through the corresponding rectangular sliding hole (55) to be positioned in a U-shaped groove (51), the other end of the sliding block II (55) penetrates through the corresponding rectangular sliding hole (55) to be positioned outside the other end of the operation table (17), air cylinders II (56) are respectively arranged in the U-shaped groove (51), in the rectangular hole I (26) and at two ends of the operation table (17), the air cylinders II (56) are arranged on the side surface of the rectangular sliding hole II (55), the output end of the air cylinders II (56) is fixedly connected with the end of the corresponding sliding block II (53), the air cylinders II (56) in the rectangular sliding hole I (26) are positioned outside the rectangular sliding hole II (26) and the end of the sliding hole II (21) and the driving roller (57), the driving roller (57) are arranged on one side of the driving roller (57), the driving roller assembly (57) and the driving roller assembly (57), one of them is transmitted motor two (61) on subassembly (57) and is installed in the one end of fixed block (54), and driven roller (58) on this subassembly (57) are connected with fixed block (54) rotation and are located the other end of fixed block (54), and motor two (61) on another subassembly (57) are installed in the one end of slider two (53), and driven roller (58) on this subassembly (57) are connected with slider two (53) rotation and are located the other end of slider two (53), the output and the driving roller (59) fixed connection of motor two (61), driving roller (59) are connected with driven roller (58) through conveyer belt (60), one end and driving roller (59) of conveyer belt (60) cup joint, the other end and driven roller (58) of conveyer belt (60) cup joint, be equipped with a plurality of evenly distributed bead (62) on conveyer belt (60), the shape of bead (62) is rectangular shape, the material that bead (62) adopted is rubber.
CN202010560212.0A 2020-06-18 2020-06-18 Cold-rolled seamless steel tube for automobile transmission shaft and preparation process thereof Active CN111853043B (en)

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CN1744955A (en) * 2003-01-31 2006-03-08 住友金属工业株式会社 Seamless steel tube for drive shaft and method for manufacturing the same
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CN104196903A (en) * 2014-09-22 2014-12-10 江苏荣基重工科技有限公司 Cross-shaft type universal coupling with spline pair
CN104533972A (en) * 2014-12-10 2015-04-22 镇江市远程传动机械有限责任公司 Coupler with spline pair
CN107088593A (en) * 2017-04-06 2017-08-25 张家港市宏大钢管有限公司 A kind of pipe straightener
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1744955A (en) * 2003-01-31 2006-03-08 住友金属工业株式会社 Seamless steel tube for drive shaft and method for manufacturing the same
RU2234428C1 (en) * 2003-04-24 2004-08-20 Закрытое Акционерное Общество "Техмаш" Ground vehicle propeller shaft
CN202073945U (en) * 2010-12-30 2011-12-14 河南汇丰管业有限公司 Device for connecting speed reducer with elongator or perforator in seamless steel pipe production
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CN104196903A (en) * 2014-09-22 2014-12-10 江苏荣基重工科技有限公司 Cross-shaft type universal coupling with spline pair
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Denomination of invention: Cold rolled seamless steel pipe for automotive transmission shaft and its preparation process

Granted publication date: 20230523

Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd.

Pledgor: ZHEJIANG JIUDING MACHINERY Co.,Ltd.

Registration number: Y2024980030919

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