CN107243717A - The preparation method of welded type chrome-plated roller - Google Patents
The preparation method of welded type chrome-plated roller Download PDFInfo
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- CN107243717A CN107243717A CN201611010299.4A CN201611010299A CN107243717A CN 107243717 A CN107243717 A CN 107243717A CN 201611010299 A CN201611010299 A CN 201611010299A CN 107243717 A CN107243717 A CN 107243717A
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- roller
- outer circumference
- circumference surface
- chuck
- plated
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- 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
Abstract
The present invention relates to a kind of preparation method of welded type chrome-plated roller, the process of roller processing comprises the following steps：The step of normalized treatment is carried out to the roller of forging and molding, the step of normalized treatment is carried out to the roller of forging and molding；The outer circumference surface and endoporus of pair roller barrel carry out rough turn step；Modifier treatment is carried out by quenching and high tempering pair roller barrel, the step of controlling the hardness of roller；Using the smart car roller of numerically controlled lathe half outer circumference surface and endoporus the step of；The amount of unbalance of roller body is detected, when being more than 150g based on aequum, uses chuck clamping device on lathe to clamp roller body with by means of bias, the step of outer circumference surface and roller of smart car roller and the endoporus of sleeve are to eliminate amount of unbalance；Chromium is plated on roller body surface to obtain welded type chrome-plated roller.The preparation method of the present invention can avoid the surface of chrome-plated roller from crackle occur.
Description
Technical field
The present invention relates to a kind of preparation method of welded type chrome-plated roller.
Background technology
Welded type chrome-plated roller is generally thin-walled roller, as shown in figure 1, chrome-plated roller is made up of two parts：Roller 1 and sleeve 2 are thin
Wall roller is prepared from by following technique：
Roller 1：Get the raw materials ready --- rough turn --- UT --- quenched --- half smart car --- Quenching Treatment --- smart car (endoporus,
Outer circumference surface).
Sleeve：--- rough turn --- smart car of getting the raw materials ready coordinates outer circumference surface.
It is assembled：--- amendment aperture --- half smart car (roller outer circumference surface, set endoporus) --- static balance is tried for welding
Test that --- --- --- dynamic balancing --- repaiies aperture --- fine cylindrical side face --- smart car set --- to smart car to duplicate removal (borrow bias)
Texturing chromium plating.
1st, due to the characteristic of material, product shrinks and torsional deformation in heat treatment process, easily, it is difficult to ensure that product is quenched
The uniformity and hardness requirement of fiery depth, are easily caused product rejection.
2nd, product, to prevent contraction and the torsional deformation of quenching, more surplus has been stayed to subsequent handling, has been given before quenching
Processing brings certain difficulty.
3rd, welded after product heat treatment with set, be also easy to produce weld crack, certain risk is brought to product final mass, its
Reason is, because roller surface has higher hardness, 150 DEG C -200 DEG C need to be preheated during welding, using low current it is quick, point
Section welding, reduces welding heat affected zone, and postheating reduces stress, prevents crackle, and process control requirement is strict, holds
It is also easy to produce weld crack.
4th, reconciliation of inventory precision is not high, need to be also easy to produce eccentric error by repeatedly balancing, external periphery quenching hardness
Uniformity and depth zone carry out certain influence.
The content of the invention
It is an object of the invention to provide a kind of preparation method for the welded type chrome-plated roller for avoiding the occurrence of crackle.
The technical scheme for solving above-mentioned technical problem is as follows：
The preparation method of welded type chrome-plated roller, includes process, the process of sleeve processing, roller and the sleeve weldering of roller processing
The process and the treatment process of postwelding connect, the process of the roller processing comprises the following steps：
The step of normalized treatment is carried out to the roller of forging and molding；
Outer circumference surface and the endoporus progress of pair roller barrel are rough turn, control the circularity, roughness and surplus of the outer circumference surface
The step of；
Modifier treatment is carried out by quenching and high tempering pair roller barrel, the step of controlling the hardness of roller；
Using the smart car roller of numerically controlled lathe half outer circumference surface and endoporus the step of；
The process of the sleeve processing comprises the following steps：
Outer circumference surface and endoporus to sleeve carry out rough turn step；
The process of roller and sleeve weld comprises the following steps：
Roller and sleeve, after 150-250 DEG C of preheating, roller and sleeve are carried out welding the step of obtaining roller body；
The treatment process of postwelding includes：
The step of de-stress is carried out to roller body；
The step of outer circumference surface of pair roller barrel carries out low half smart car of arcwall face in the high two ends in middle part；
The step of being quenched to roller body；
The step of outer circumference surface of pair roller barrel is roughly ground；
The step of endoporus of pair roller barrel and sleeve carries out half smart car；
The amount of unbalance of roller body is detected, when being more than 150g based on aequum, using the chuck clamping device pair on lathe
Roller body clamping is with by means of bias, and the outer circumference surface and roller of smart car roller and the endoporus of sleeve are to eliminate the step of amount of unbalance
Suddenly；
Chromium is plated on roller body surface to obtain welded type chrome-plated roller.
Further, roller process process in, it is described it is rough turn be use engine lathe size side face, stay 5.5-
6.5mm machining allowance, the circularity of outer circumference surface is within 0.2, and roughness is Ra6.3um.
Further, it is that the outer circumference surface of pair roller barrel carries out the low arc in the high two ends in middle part in the treatment process of postwelding
The step of half smart car of shape face is the outer circumference surface using CNC Lathe Turning roller, it is ensured that 2.2+ is stayed in the middle part of outer circumference surface
Stay 1.4+0.2mm grinding allowances in 0.2mm grinding allowances, the two ends of outer circumference surface.
Further, it is to use Medium frequency induction circle in the treatment process of postwelding, the step of the quenching, quenching power is
220-230KW；Quenching velocity is 250r/min；Hardening heat is 850-870 DEG C, water-spraying control, in 300-320 DEG C of baking oven ring
Air cooling after 6h is incubated under border and forms the soft ribbons that length is 35-45mm at the two ends of roller after quenching.
Further, in the treatment process of postwelding, between to the detection of the amount of unbalance of roller body and the step of chromium plating,
It is further comprising the steps of：
Dynamically balanced step is carried out to roller body；
According to dynamic balancing result, the step of being balanced on sleeve using duplicate removal method.
Further, after the duplicate removal, in addition to：
The step of outer circumference surface of roller is roughly ground using grinding machine；
Using lathe frame centre frame, smart car hub internal bore, it is ensured that axiality is the step of within 0.02mm.
Further, the chuck clamping device includes the first chuck clamping device and the connection being connected on lathe spindle
In the second chuck clamping device on tail stock.
Further, the first chuck clamping device is scroll chuck or chuck.
Further, second chuck mechanism includes shell, flange, chuck, the threaded claw of tool, screw mandrel, shell
One end be morse shank, shell is provided with pilot hole, and one end of flange is provided with axle, and the axle extend into the pilot hole of shell and led to
Cross bearing integral with cage connection, one end of the chuck is fixedly connected with the other end of flange, and the other end of chuck is provided with
Groove, the wall of groove is provided with screw thread, and the claw coordinates in the groove on chuck, after the screw mandrel is extend into the groove on chuck
Respectively with the threaded connection on the screw thread and claw on cell wall, claw under the rotation of screw mandrel along chuck radial displacement.
Advantages of the present invention is as follows：
Roller and sleeve gap when the 1, by controlling to weld, effectively prevent roller quenching from shrinking the risk cracked.
2nd, by first welding again the technique of Quenching Treatment, solve roller and first quench and then assembled welding, be also easy to produce crackle
The problem of.
3rd, quenching blanket roller makes certain R type convexitys, solves after quenching due to roller deformation, causes roller quenching hard
Spend the problem of depth is uneven.
4th, by the utilization of the double chucks of engine lathe, it is not high to solve original product balance quality, gives product final matter
Amount brings the possibility of risk.
5th, the balancing technique that eccentric excursions method and duplicate removal are combined is employed, it is ensured that the dynamically balanced realization of product.
Brief description of the drawings
Fig. 1 is the schematic diagram of the chrome-plated roller of the present invention；
Fig. 2 is the schematic diagram of the roller of forging and molding in the present invention；
Fig. 3 is that roller body carries out clamping progress by means of eccentric schematic diagram by double chuck devices of lathe；
Fig. 4 for the present invention in chuck clamping device schematic diagram.
Embodiment
As shown in figure 1, the preparation method of the welded type chrome-plated roller of the present invention, includes process, the sleeve processing of roller processing
Process, the treatment process of the process of roller and sleeve weld and postwelding, below the process to every part illustrate：
First, the process of the roller processing comprises the following steps：
1st, forging blank, normalized treatment：
Normalized treatment is carried out to the roller of forging and molding, hardness control≤228HB carries out normalizing to the roller of forging and molding
The step of processing.
2nd, it is rough turn：
Outer circumference surface and the endoporus progress of pair roller barrel are rough turn, control the circularity, roughness and surplus of the outer circumference surface；
Preferably, using engine lathe turning roller outer circumference surface φ 350, surplus control 6mm, circularity reaches 0.2, and roughness reaches
Ra6.3um.The endoporus of roller is machined within φ 300, it is therefore an objective to reduce the deformation of quenching.
3rd, modifier treatment (quenching+high tempering)：
Modifier treatment is carried out by quenching and high tempering pair roller barrel, the hardness of roller is controlled, it is preferable that hardness is controlled
In HRC26-32.
4th, half smart car：
Using the smart car roller of numerically controlled lathe half outer circumference surface and endoporus the step of.Preferably, using engine lathe or
The outer circumference surface and endoporus of CNC Lathe Turning roller, smart car coordinate endoporus, it is desirable to roughness Ra more than 1.6.Focus on control
The axiality of centre bore processed.
2nd, the process of sleeve processing comprises the following steps：
1st, get the raw materials ready：
Using common medium-carbon steel
2nd, it is rough turn：
Outer circumference surface and endoporus to sleeve carry out rough turn.Preferably, using engine lathe or CNC Lathe Turning set
The outer circumference surface of cylinder (it is required that coordinating endoporus to coordinate using gap with roller, controls gap 0.25-0.40mm, it is considered to which roller is welded
With quenching amount of contraction) and endoporus φ 200 (leaving surplus 6mm), smart car cooperation endoporus.Focus on control set outer circumference surface and end
The perpendicularity in face.
3rd, weld：
3rd, the process of roller and sleeve weld comprises the following steps：
1st, roller and sleeve, after 150-250 DEG C of preheating, roller and sleeve weld obtaining roller body.Preferably,
It is using manual welding (wind weldering) that roller and sleeve weld is integral by roller and sleeve after being preheating to 200 DEG C, obtain the roller
Body.Preheating can improve welding region plasticity, reduce postwelding residual stress.
4th, the treatment process of postwelding includes：
1st, the step of de-stress being carried out to roller body；Preferably, the roller of butt welding aftershaping originally carries out eliminating stress immediately
Heat treatment, the mode for eliminating stress is to be tempered roller body in 600-650 DEG C of environment.
2nd, half smart car：
The outer circumference surface of pair roller barrel carries out the low smart car of arcwall face half in the high two ends in middle part.Preferably, half smart car is to adopt
With the outer circumference surface of CNC Lathe Turning roller, it is ensured that stay 2.2+0.2mm grinding allowances in the middle part of outer circumference surface, outer circumference surface
Stay 1.4+0.2mm grinding allowances in two ends.Purpose：By the contraction distortion of outer circumference surface after quenching, quenched after control product grinding
The uniformity of depth and the uniformity of case hardness.
3rd, magnetic powder inspection, it is ensured that flawless before material quenching；
4th, quench：
Roller body is quenched.Preferably, the quenching is to use Medium frequency induction circle, and quenching power is 220-230KW；
Quenching velocity is 250r/min；Hardening heat is 850-870 DEG C, and water-spraying control is incubated 6h under 300-320 DEG C of oven environment
Air cooling forms the soft ribbons that length is 35-45mm after quenching at the two ends of roller afterwards.
5th, smart car amendment aperture：
Using the aperture of engine lathe or numerical control lathe bedstead centre frame amendment sleeve, it is easy to grinding.
6th, outer circumference surface is roughly ground：
The outer circumference surface of pair roller barrel is roughly ground.Preferably, roller outer circumference surface is roughly ground using grinding machine, it is ensured that the face of cylinder is complete
Portion is ground, and purpose ensures the precision of subsequent reference and balance.
7th, half smart car：
The endoporus of pair roller barrel and sleeve carries out half smart car.Preferably, using lathe or numerical control lathe bedstead centre frame, smart car roller
Cylinder and hub internal bore, it is ensured that axiality is within 0.02mm.
8th, static balance：By static balance, reconciliation of inventory precision is verified.
9th, by means of eccentric (repairing two ends centre bore)：
The amount of unbalance of roller body is detected, when being more than 150g based on aequum, using the chuck clamping device pair on lathe
Roller body clamping is with by means of bias, and the outer circumference surface and roller of smart car roller and the endoporus of sleeve are to eliminate the step of amount of unbalance
Suddenly；
10th, dynamic balancing：Verify Product Precision requirement.
11st, duplicate removal is balanced：According to dynamic balancing result, it is balanced in set position using duplicate removal method.
12nd, fine cylindrical side face：Roller outer circumference surface is roughly ground to finished product using common M1350 grinding machines.
13rd, smart car sleeve：Using engine lathe or numerical control lathe bedstead centre frame, smart car set endoporus, it is ensured that axiality exists
Within 0.02mm.
14th, texturing chromium plating：Chromium is plated on roller body surface so as to obtain welded type chrome-plated roller, the thickness of chromium plating is 0.08-
0.1mm。
As shown in Figures 2 and 3, the chuck clamping device used in the process of above-mentioned implementing process includes being connected to lathe main
The first chuck clamping device 14 and the second chuck clamping device being connected on tail stock 15 on axle 13.First chuck
Clamping device 14 is scroll chuck or chuck.Second chuck mechanism includes shell 16, flange 17, chuck 18, had
Claw 19, the screw mandrel 20 of screw thread, one end of shell 16 is morse shank, and shell 16 is provided with the shell 16 in pilot hole, the present invention,
It is to be formed in the top transformation being connected on the tailstock 15 of original lathe, i.e., top one end with tip is arranged to one
Individual plane, and pilot hole is opened up along top axial direction, the pilot hole is stepped hole, and original top other end is morse shank,
Therefore, the one end of shell 16 in this hair is morse shank, so, in the case where not changing the original tailstock structure of lathe, is passed through
Shell 16 can be attached with tailstock 15.One end of flange 17 is provided with axle 17a, and axle 17a extend into the pilot hole of shell 16
In and linked into an integrated entity by bearing with shell 16, the direction of the pilot hole of shell 16 from outer cover body to morse shank is divided into successively
First endoporus, the second endoporus, the 3rd endoporus, the 4th endoporus, the aperture of the first endoporus to the 4th endoporus are sequentially reduced, and bearing includes
Clutch shaft bearing 21, second bearing 22,3rd bearing 23, fourth bearing 24,5th bearing 25, clutch shaft bearing 21 and second bearing 22
In the second endoporus of shell 16,3rd bearing 23 is arranged in the 3rd endoporus, and fourth bearing 24 and 5th bearing 25 are pacified
In the 4th endoporus, and end plate 26 is installed in first endoporus, for carrying out axial limiting to clutch shaft bearing 21, it is preferable that the
One bearing 21 and second bearing 22 use cylinder roller bearing, and 3rd bearing 23 uses thrust ball bearing, and fourth bearing 24 is used
Single-row needle bearing, 5th bearing 25 uses self-aligning ball bearing.One end of the chuck 18 is fixed with the other end of flange 17 to be connected
Connect, the other end of chuck 18 is provided with groove, and radial arrangement of the groove along chuck, the number of groove is at least three, in present embodiment, groove
Quantity be four, on the wall of each groove be provided with screw thread.The claw 19 coordinates in the groove on chuck 18, the screw mandrel
20 extend into the groove on chuck after respectively with the threaded connection on the screw thread on cell wall and claw 19, claw 19 is in screw mandrel 20
Along the radial displacement of chuck under rotation, so as to adjust the clip position of claw 19.The chuck clamping device of the present invention changes biography
Unite the installation way of V-type frame, be not only used in existing chuck, but on lathe it is original it is top transformed, from
And form a kind of rotary body of new highly precision clamp.The advantage of the chuck clamping device of the present invention is as follows：
The present invention can carry out radiai adjustment in clamping in ten word directions, be easy to precision controlling；
Product clamping range can be expanded by the utilization of positive and negative claw；
The clamping surface of product can effectively be protected by specific soft claw (positive and negative form)；
By two ends four paws, with reference to amesdial A, the mode of synchronous adjustment offset improves reconciliation of inventory precision.
Claims (9)
1. the preparation method of welded type chrome-plated roller, includes process, process, roller and the sleeve weld of sleeve processing of roller processing
Process and postwelding treatment process, it is characterised in that the process of roller processing comprises the following steps：
The step of normalized treatment is carried out to the roller of forging and molding；
Outer circumference surface and the endoporus progress of pair roller barrel are rough turn, control the step of the circularity, roughness and surplus of the outer circumference surface
Suddenly；
Modifier treatment is carried out by quenching and high tempering pair roller barrel, the step of controlling the hardness of roller；
Using the smart car roller of numerically controlled lathe half outer circumference surface and endoporus the step of；
The process of the sleeve processing comprises the following steps：
Outer circumference surface and endoporus to sleeve carry out rough turn step；
The process of roller and sleeve weld comprises the following steps：
Roller and sleeve, after 150-250 DEG C of preheating, roller and sleeve are carried out welding the step of obtaining roller body；
The treatment process of postwelding includes：
The step of de-stress is carried out to roller body；
The step of outer circumference surface of pair roller barrel carries out low half smart car of arcwall face in the high two ends in middle part；
The step of being quenched to roller body；
The step of outer circumference surface of pair roller barrel is roughly ground；
The step of endoporus of pair roller barrel and sleeve carries out half smart car；
The amount of unbalance of roller body is detected, when being more than 150g based on aequum, using the chuck clamping device on lathe to roller sheet
Body clamping is with by means of bias, the step of outer circumference surface and roller of smart car roller and the endoporus of sleeve are to eliminate amount of unbalance；
Chromium is plated on roller body surface to obtain welded type chrome-plated roller.
2. the preparation method of welded type chrome-plated roller according to claim 1, it is characterised in that：The process processed in roller
In, it is described it is rough turn be use engine lathe size side face, stay 5.5-6.5mm machining allowance, the circularity control of outer circumference surface
System is within 0.2, and roughness is Ra6.3um.
3. the preparation method of welded type chrome-plated roller according to claim 1, it is characterised in that：In the treatment process of postwelding
In, it is that the step of outer circumference surface of pair roller barrel carries out low half smart car of arcwall face in the high two ends in middle part is to use CNC Lathe Turning
The outer circumference surface of roller, it is ensured that 2.2+0.2mm grinding allowances are stayed in the middle part of outer circumference surface, 1.4+ is stayed at the two ends of outer circumference surface
0.2mm grinding allowances.
4. the preparation method of welded type chrome-plated roller according to claim 1, it is characterised in that：In the treatment process of postwelding
In, it is to use Medium frequency induction circle the step of the quenching, quenching power is 220-230KW；Quenching velocity is 250r/min；Quenching
Temperature be 850-870 DEG C, water-spraying control, under 300-320 DEG C of oven environment be incubated 6h after air cooling after quenching in roller
Two ends formed length be 35-45mm soft ribbons.
5. the preparation method of welded type chrome-plated roller according to claim 1, it is characterised in that in the treatment process of postwelding
In, it is further comprising the steps of between to the detection of the amount of unbalance of roller body and the step of chromium plating：
Dynamically balanced step is carried out to roller body；
According to dynamic balancing result, the step of being balanced on sleeve using duplicate removal method.
6. the preparation method of welded type chrome-plated roller according to claim 5, it is characterised in that after the duplicate removal, in addition to：
The step of outer circumference surface of roller is roughly ground using grinding machine；
Using lathe frame centre frame, smart car hub internal bore, it is ensured that axiality is the step of within 0.02mm.
7. the preparation method of welded type chrome-plated roller according to claim 1, it is characterised in that the chuck clamping device bag
Include the first chuck clamping device being connected on lathe spindle and the second chuck clamping device being connected on tail stock.
8. the preparation method of welded type chrome-plated roller according to claim 7, it is characterised in that the first chuck clamping machine
Structure is scroll chuck or chuck.
9. the preparation method of welded type chrome-plated roller according to claim 7, it is characterised in that the second chuck mechanism bag
Shell, flange, chuck, the threaded claw of tool, screw mandrel are included, one end of shell is morse shank, and shell is provided with pilot hole, flange
One end be provided with axle, the axle is extend into the pilot hole of shell and integral by bearing and cage connection, the one of the chuck
End is fixedly connected with the other end of flange, and the other end of chuck is provided with groove, and the wall of groove is provided with screw thread, and the claw coordinates
In groove on chuck, the screw mandrel connects with the screw thread on the screw thread and claw on cell wall respectively after extending into the groove on chuck
Connect, claw under the rotation of screw mandrel along chuck radial displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010299.4A CN107243717A (en) | 2016-11-14 | 2016-11-14 | The preparation method of welded type chrome-plated roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010299.4A CN107243717A (en) | 2016-11-14 | 2016-11-14 | The preparation method of welded type chrome-plated roller |
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Cited By (2)
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| CN113909825A (en) * | 2021-11-09 | 2022-01-11 | 湖北三江航天红阳机电有限公司 | Processing method of large-size thin-wall load cabin |
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