CN104588999A - Method for machining universal ball pedestal - Google Patents
Method for machining universal ball pedestal Download PDFInfo
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- CN104588999A CN104588999A CN201510037967.1A CN201510037967A CN104588999A CN 104588999 A CN104588999 A CN 104588999A CN 201510037967 A CN201510037967 A CN 201510037967A CN 104588999 A CN104588999 A CN 104588999A
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- base
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- universal caster
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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
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Abstract
The invention provides a method for machining a universal ball pedestal and belongs to the technical field of machinery. The problem that the rod part of the current universal ball pedestal is easy to break is solved. The method for machining the universal ball pedestal provided by the invention comprises the following steps of A, turning a blank; B, machining a caliber groove; C, thermally treating the whole pedestal; D, performing high-frequency quenching on the head of the pedestal; E, sanding. The method for machining the universal ball pedestal provided by the invention has the advantage that the hardness of the head of the pedestal and the hardness of the rod part of the pedestal are different.
Description
Technical field
The invention belongs to field of mechanical technique, relate to the processing method of base in a kind of Universal caster, particularly Universal caster.
Background technology
Universal caster can carry gently, weight body moving horizontally in all directions, is applicable to the industries such as machinery, five metals, chemical industry, food, supermarket, airport, warehouse.Be widely used in the conveying equipment such as machinery carrying, assembly line, conveyer, driver of logistics, transmission industry, and object is turned, joining part.
Universal caster comprises ball, base, cover plate and pellet layer, base end has spherically recessed bore groove, ball at bore groove place and above-mentioned pellet layer between ball and base, cover plate is positioned at the outside of ball, is provided with the circular hole stretched out for ball part in cover plate.Conveniently connect, on base, usually have one in shaft-like bar portion, certainly, the outside in bar portion has screw thread.
This Universal caster is used for the carrying of weight or uses as supporting leg.During use, when needing Universal caster to be connected on other equipment or device, Universal caster can easily be made to be connected with other equipment by the screw connection structure in bar portion.As shown in Figure 2, bar portion is threaded connection on substrate, and when Universal caster is used for the carrying of weight, a large amount of even array of Universal caster of general employing is arranged in the enterprising enforcement of substrate and uses.
But because bar portion and base are integral type structure in existing Universal caster, bar portion and base have identical high rigidity.The bar portion that hardness is higher in use may cause it to damage due to its rigidity reason.And, because bar portion hardness ratio is higher, Universal caster in use bar portion is also can be stressed, once after the stressed damage of the threaded portion in bar portion (the bar portion of higher hardness causes it very crisp, will easily break once stressed) also can cause being connected unstable problem between Universal caster with other equipment.
Summary of the invention
The object of the invention is the problems referred to above existed for prior art, a kind of processing method of the Universal caster base that base rod portion can be made different from base head hardness is provided.
Object of the present invention realizes by following technical proposal: a kind of processing method of Universal caster base, Universal caster base comprises cylindrical base head and is shaft-like base rod portion, outside above-mentioned base rod portion, there is screw thread, above-mentioned base head outer end has spherically recessed bore groove, above-mentioned base head is inner and the inner, base rod portion is connected and base head and base rod portion are integral type structure, and the method comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, on bar blank, base head is processed by method for turning, obtain blank semi-finished product, blank semi-finished product turn around clamping after lathe, process in shaft-like base rod portion by method for turning again, finally adopt rolled thread or thread rolling processing method to process external screw thread in base rod portion;
B, processing bore groove: process spherically recessed bore groove in the outer end of base head by method for turning;
C, base bulk heat treatmet: heat-treat base entirety, make the hardness of base entirety be HRC20-39.5;
D, base head high-frequency quenching: carry out high-frequency quenching to base head separately, make base head hardness be HRC40-60;
E, ramming: ramming process is carried out to base entirety.
The processing method of this Universal caster base first adopts turnery processing, obtains base blank.Then, then adopt method for turning to process bore groove in base head outer end, certainly, the screw thread in bar portion is also processed by other processing methods.
Above-mentioned base processes in two steps, first heat-treats make the hardness of base entirety be HRC20-39.5 to base entirety, and then carries out high-frequency quenching to base head separately and make base head hardness be HRC40-60.
Finally ramming is carried out to base entirety, remove the impurity such as the oxide skin of base integral surface.
In the processing method of above-mentioned Universal caster base, in described steps A, chamfering or fillet process are carried out to the edge of base blank.
After chamfering or fillet process, base assembling can be convenient to.Certainly, the surface quality of part can also be ensured.
In the processing method of above-mentioned Universal caster base, first carry out rough turn by method for turning to bore groove in described steps A, and then finish turning is carried out to bore groove.
Point twice turning operation can improve the precision of bore groove after turnery processing.
In the processing method of above-mentioned Universal caster base, base entirety quenched in described step C, make the hardness of base entirety be HRC55-65, described base is overall carries out tempering again after quenching, makes the hardness of base entirety be HRC20-39.5.
HRC20-39.5 are remained on by what carry out after quenching that tempering can make the hardness stabilization of base entirety again.
In the processing method of above-mentioned Universal caster base, first being inserted by base head in described step C has in activated carburizing medium, be heated to the single phase austenite district of 900-950 degrees Celsius, after being incubated enough 2-4 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, base head inside still keeps original composition.
Obviously, by susceptor surface can be made after above-mentioned Carburization Treatment to have higher hardness.
In the processing method of above-mentioned Universal caster base, described activated carburizing medium is methane.Also ethane or kerosene or alcohol etc. can be adopted according to actual conditions.
In the processing method of above-mentioned Universal caster base, high-frequency quenching is carried out to the base head after carburizing, make base head hardness be HRC70-85, described base head carries out tempering to it after carrying out high-frequency quenching, makes base head hardness be HRC40-60.
What can make the hardness stabilization of base head by heat treatment and this two procedures of high-frequency quenching remains on HRC40-60.
In the processing method of above-mentioned Universal caster base, evenly zinc-plated at base outer surface by galvanized method after described step e.Certainly, also can carry out Common platings to susceptor surface according to actual conditions or plate the color zinc of trivalent.
The processing method of Universal caster base, Universal caster base comprises cylindrical base head and is shaft-like base rod portion, outside above-mentioned base rod portion, there is screw thread, above-mentioned base head outer end has spherically recessed bore groove, above-mentioned base head is inner and the inner, base rod portion is connected and base head and base rod portion are integral type structure, and the method comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, on bar blank, base head is processed by method for turning, obtain blank semi-finished product, blank semi-finished product turn around clamping after lathe, process in shaft-like base rod portion by method for turning again, finally adopt rolled thread or thread rolling processing method to process external screw thread in base rod portion;
B, processing bore groove: process spherically recessed bore groove in the outer end of base head by method for turning;
C, base bulk heat treatmet: heat-treat base entirety, make the hardness of base entirety be HRC20-39.5;
D, the process of base head heat: heat-treat base head separately, make base head hardness be HRC40-60;
E, ramming: ramming process is carried out to base entirety.
The processing method of this Universal caster base first adopts turnery processing, obtains base blank.Then, then adopt method for turning to process bore groove in base head outer end, certainly, the screw thread in base rod portion is also processed by other processing methods.
Above-mentioned base processes in two steps, first heat-treats make the hardness of base entirety be HRC20-39.5 to base entirety, and then heat-treats base head and make base head hardness be HRC40-60.
Finally ramming is carried out to base entirety, remove the impurity such as the oxide skin of base integral surface.
In the processing method of above-mentioned Universal caster base, in described steps A, chamfering or fillet process are carried out to the edge of base blank.
After chamfering or fillet process, base assembling can be convenient to.Certainly, the surface quality of part can also be ensured.
In the processing method of above-mentioned Universal caster base, first carry out rough turn by method for turning to bore groove in described steps A, and then finish turning is carried out to bore groove.
Point twice turning operation can improve the precision of bore groove after turnery processing.
In the processing method of above-mentioned Universal caster base, base entirety quenched in described step C, make the hardness of base entirety be HRC55-65, described base is overall carries out tempering again after quenching, makes the hardness of base entirety be HRC20-39.5.
HRC20-39.5 are remained on by what carry out after quenching that tempering can make the hardness stabilization of base entirety again.
In the processing method of above-mentioned Universal caster base, first being inserted by base head in described step C has in activated carburizing medium, be heated to the single phase austenite district of 900-950 degrees Celsius, after being incubated enough 2-4 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, base head inside still keeps original composition.
Obviously, by susceptor surface can be made after above-mentioned Carburization Treatment to have higher hardness.
In the processing method of above-mentioned Universal caster base, described activated carburizing medium is methane.Also ethane or kerosene or alcohol etc. can be adopted according to actual conditions.
In the processing method of above-mentioned Universal caster base, the base head after carburizing is quenched, make base head hardness be HRC70-85, after described base head quenches, tempering is carried out to it, make base head hardness be HRC40-60.
What can make the hardness stabilization of head by heat treatment and this two procedures of quenching remains on HRC40-60.
In the processing method of above-mentioned Universal caster base, evenly zinc-plated at base outer surface by galvanized method after described step e.Certainly, also can carry out Common platings to susceptor surface according to actual conditions or plate the color zinc of trivalent.
Compared with prior art, the processing method of this Universal caster base has the following advantages:
1, because and base head overall to base carry out different process respectively, therefore, the hardness number in base head and base rod portion is different.More precisely base rod portion has certain toughness, therefore.When base rod portion is connected with other equipment, can not only connect smoothly, and the base rod portion with certain toughness can also keep being connected firmly.
2, this processing method is first carrying out bulk heat treatmet to the base blank after turnery processing, then carries out this two procedures of high-frequency quenching to base head separately, finally the base entirety after process is carried out to ramming, is zinc-platedly namely obtained base.Whole simple and convenient processing method and easy to implement, has very high practical value.
3, this processing method is first carrying out bulk heat treatmet to the base blank after turnery processing, then heat-treats this two procedures to head separately, finally the base entirety after process is carried out to ramming, is zinc-platedly namely obtained base.Whole simple and convenient processing method and easy to implement, has very high practical value.
Accompanying drawing explanation
Fig. 1 is the broken section structural representation of Universal caster base.
Fig. 2 is the sectional structure schematic diagram that Universal caster is connected on substrate.
In figure, 1, base; 1a, base head; 1a1, bore groove; 1b, base rod portion.
Detailed description of the invention
Embodiment one
As shown in Figure 1, Universal caster base 1 comprises the base head 1a and base rod portion 1b that are connected as a single entity, and base head 1a is cylindric, and base rod portion 1b is shaft-like, have screw thread outside base rod portion 1b, base head 1a outer end has spherically recessed bore groove 1a1.Base head 1a is inner to be connected as a single entity with base rod portion 1b the inner.
The processing method of this Universal caster base comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, is processed base head 1a by method for turning, obtain blank semi-finished product on bar blank.
Blank semi-finished product turn around clamping after lathe, then are processed in shaft-like base rod portion 1b by method for turning.In the present embodiment, in Tutrning Process, add one extra operation, namely chamfered is carried out to the edge of base head 1a and base rod portion 1b.Certainly, according to actual conditions, also fillet process can be carried out to the edge of base head 1a and base rod portion 1b.
Finally, rolled thread or thread rolling processing method is adopted to process external screw thread on base rod portion 1b.
B, processing bore groove: adopt the outer end of method for turning to base head 1a to carry out rough turn, the bore groove 1a1 be spherically recessed into.Then, then to bore groove 1a1 carry out one finish turning operation.
C, base bulk heat treatmet: first base 1 entirety quenched, make the hardness of base 1 entirety be HRC55.
Then, carrying out tempering to base 1 entirety after quenching, the hardness of base 1 entirety is made to be HRC20.
D, base head 1a high-frequency quenching: first base head 1a is inserted and have in activated carburizing medium, be heated to the single phase austenite district of 900 degrees Celsius, after being incubated enough 2 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, base head 1a inside still keeps original composition.In the present embodiment, activated carburizing medium is kerosene.
Then, high-frequency quenching is carried out to the base head 1 after carburizing, make base head 1a hardness be HRC70.
Finally, tempering is carried out to the base head 1a after high-frequency quenching, make base head 1a hardness be HRC40
E, ramming: polishing is carried out to the base 1 after process by ramming process.Base 1 after polishing adopts plating mode to electroplate the uniform zinc of one deck in chassis outer side, according to actual conditions, also can electroplate the color zinc of last layer trivalent uniformly.
Reduced the hardness of base rod portion 1b by above-mentioned technique, when this Universal caster uses, base rod portion 1b is threaded on substrate or on weight, can effectively prevent base rod portion 1b from rupturing.
Embodiment two
The processing method of this Universal caster base comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, is processed base head 1a by method for turning, obtain blank semi-finished product on bar blank.
Blank semi-finished product turn around clamping after lathe, then are processed in shaft-like base rod portion 1b by method for turning.In the present embodiment, in Tutrning Process, add one extra operation, namely chamfered is carried out to the edge of base head 1a and base rod portion 1b.Certainly, according to actual conditions, also fillet process can be carried out to the edge of base head 1a and base rod portion 1b.
Finally, rolled thread or thread rolling processing method is adopted to process external screw thread in base rod portion.
B, processing bore groove: adopt the outer end of method for turning to base head 1a to carry out rough turn, the bore groove 1a1 be spherically recessed into.Then, then to bore groove 1a1 carry out one finish turning operation.
C, base bulk heat treatmet: first base 1 entirety quenched, make the hardness of base 1 entirety be HRC65.
Then, carrying out tempering to base 1 entirety after quenching, the hardness of base 1 entirety is made to be HRC39.5.
D, base head 1a high-frequency quenching: first base head 1a is inserted and have in activated carburizing medium, be heated to the single phase austenite district of 950 degrees Celsius, after being incubated enough 4 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, chassis interior still keeps original composition.In the present embodiment, activated carburizing medium is alcohol.
Then, high-frequency quenching is carried out to the base head 1a after carburizing, make base head 1a hardness be HRC8.
Finally, tempering is carried out to the base head 1a after high-frequency quenching, make base head 1a hardness be HRC60.
E, polishing: polishing is carried out to the base 1 after process by ramming process.Base 1 after polishing adopts plating mode to electroplate the uniform zinc of one deck in chassis outer side, according to actual conditions, also can electroplate the color zinc of last layer trivalent uniformly.
Embodiment three
The processing method of this Universal caster base comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, is processed head 1a by method for turning, obtain blank semi-finished product on bar blank.
Blank semi-finished product turn around clamping after lathe, then are processed in shaft-like base rod portion 1b by method for turning.In the present embodiment, in Tutrning Process, add one extra operation, namely chamfered is carried out to the edge of base head 1a and base rod portion 1b.Certainly, according to actual conditions, also fillet process can be carried out to the edge of base head 1a and base rod portion 1b.
Finally, rolled thread or thread rolling processing method is adopted to process external screw thread on base rod portion 1b.
B, processing bore groove: adopt method for turning to carry out rough turn to the outer end of base head, the bore groove 1a1 be spherically recessed into.Then, then to bore groove 1a1 carry out one finish turning operation.
C, base bulk heat treatmet: first base 1 entirety quenched, make the hardness of base 1 entirety be HRC60.
Then, carrying out tempering to base 1 entirety after quenching, the hardness of base 1 entirety is made to be HRC30.
D, base head 1a high-frequency quenching: first the head 1a of base is inserted and have in activated carburizing medium, be heated to the single phase austenite district of 920 degrees Celsius, after being incubated enough 3 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, chassis interior still keeps original composition.In the present embodiment, activated carburizing medium is methane.
Then, high-frequency quenching is carried out to the base head 1a after carburizing, make base head 1a hardness be HRC80.
Finally, temper is carried out to the base head 1a after high-frequency quenching, make base head 1a hardness be HRC50.
E, polishing: polishing is carried out to the base 1 after process by ramming process.Base 1 after polishing adopts plating mode to electroplate the uniform zinc of one deck in chassis outer side, according to actual conditions, also can electroplate the color zinc of last layer trivalent uniformly.
Embodiment four
As shown in Figure 1, Universal caster base 1 comprises the base head 1a and base rod portion 1b that are connected as a single entity, and base head 1a is cylindric, and base rod portion 1b is shaft-like, have screw thread outside base rod portion 1b, base head 1a outer end has spherically recessed bore groove 1a1.Base head 1a is inner to be connected as a single entity with base rod portion 1b the inner.
The processing method of this Universal caster base 1 comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, is processed base head 1a by method for turning, obtain blank semi-finished product on bar blank.
Blank semi-finished product turn around clamping after lathe, then are processed in shaft-like base rod portion 1b by method for turning.In the present embodiment, in Tutrning Process, add one extra operation, namely chamfered is carried out to the edge of base head 1a and base rod portion 1b.Certainly, according to actual conditions, also fillet process can be carried out to the edge of base head 1a and base rod portion 1b.
Finally, rolled thread or thread rolling processing method is adopted to process external screw thread on base rod portion 1b.
B, processing bore groove: adopt the outer end of method for turning to base head 1a to carry out rough turn, the bore groove 1a1 be spherically recessed into.Then, then to bore groove 1a1 carry out one finish turning operation.
C, base bulk heat treatmet: first base 1 entirety quenched, make the hardness of base 1 entirety be HRC55.
Then, carrying out tempering to base 1 entirety after quenching, the hardness of base 1 entirety is made to be HRC20.
D, base head 1a heat treatment: first base head 1a is inserted and have in activated carburizing medium, be heated to the single phase austenite district of 900 degrees Celsius, after being incubated enough 2 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, base head 1a inside still keeps original composition.In the present embodiment, activated carburizing medium is kerosene.
Then, the base head 1 after carburizing is quenched, make base head 1a hardness be HRC70.
Finally, tempering is carried out to the base head 1a after quenching, makes base head 1a hardness be HRC40.
E, ramming: polishing is carried out to the base 1 after process by ramming process.Base 1 after polishing adopts plating mode to electroplate the uniform zinc of one deck in chassis outer side, according to actual conditions, also can electroplate the color zinc of last layer trivalent uniformly.
Reduced the hardness of base rod portion 1b by above-mentioned technique, when this Universal caster uses, base rod portion 1b is threaded on substrate or on weight, can effectively prevent base rod portion 1b from rupturing.
Embodiment five
The processing method of this Universal caster base comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, is processed base head 1a by method for turning, obtain blank semi-finished product on bar blank.
Blank semi-finished product turn around clamping after lathe, then are processed in shaft-like base rod portion 1b by method for turning.In the present embodiment, in Tutrning Process, add one extra operation, namely chamfered is carried out to the edge of base head 1a and base rod portion 1b.Certainly, according to actual conditions, also fillet process can be carried out to the edge of base head 1a and base rod portion 1b.
Finally, rolled thread or thread rolling processing method is adopted to process external screw thread in bar portion.
B, processing bore groove: adopt the outer end of method for turning to base head 1a to carry out rough turn, the bore groove 1a1 be spherically recessed into.Then, then to bore groove 1a1 carry out one finish turning operation.
C, base bulk heat treatmet: first base 1 entirety quenched, make the hardness of base 1 entirety be HRC65.
Then, carrying out tempering to base 1 entirety after quenching, the hardness of base 1 entirety is made to be HRC39.
D, base head 1a heat treatment: first base head 1a is inserted and have in activated carburizing medium, be heated to the single phase austenite district of 950 degrees Celsius, after being incubated enough 4 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, chassis interior still keeps original composition.In the present embodiment, activated carburizing medium is alcohol.
Then, the base head 1a after carburizing is quenched, make base head 1a hardness be HRC85.
Finally, tempering is carried out to the base head 1a after quenching, makes base head 1a hardness be HRC60.
E, polishing: polishing is carried out to the base 1 after process by ramming process.Base 1 after polishing adopts plating mode to electroplate the uniform zinc of one deck in chassis outer side, according to actual conditions, also can electroplate the color zinc of last layer trivalent uniformly.
Embodiment six
The processing method of this Universal caster base comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, is processed base head 1a by method for turning, obtain blank semi-finished product on bar blank.
Blank semi-finished product turn around clamping after lathe, then are processed in shaft-like base rod portion 1b by method for turning.In the present embodiment, in Tutrning Process, add one extra operation, namely chamfered is carried out to the edge of base head 1a and base rod portion 1b.Certainly, according to actual conditions, also fillet process can be carried out to the edge of base head 1a and base rod portion 1b.
Finally, rolled thread or thread rolling processing method is adopted to process external screw thread on base rod portion 1b.
B, processing bore groove: adopt method for turning to carry out rough turn to the outer end of head, the bore groove 1a1 be spherically recessed into.Then, then to bore groove 1a1 carry out one finish turning operation.
C, base bulk heat treatmet: first base 1 entirety quenched, make the hardness of base 1 entirety be HRC60.
Then, carrying out tempering to base 1 entirety after quenching, the hardness of base 1 entirety is made to be HRC30.
D, base head 1a heat treatment: first base head 1a is inserted and have in activated carburizing medium, be heated to the single phase austenite district of 920 degrees Celsius, after being incubated enough 3 hours, the active atoms of carbon decomposited in carburizing medium is made to infiltrate base top layer, thus obtaining top layer high-carbon, chassis interior still keeps original composition.In the present embodiment, activated carburizing medium is methane.
Then, the base head 1a after carburizing is quenched, make base head 1a hardness be HRC80.
Finally, temper is carried out to the base head 1a after quenching, makes base head 1a hardness be HRC50.
E, polishing: polishing is carried out to the base 1 after process by ramming process.Base 1 after polishing adopts plating mode to electroplate the uniform zinc of one deck in chassis outer side, according to actual conditions, also can electroplate the color zinc of last layer trivalent uniformly.
Claims (13)
1. the processing method of Universal caster base, Universal caster base (1) comprises cylindrical base head (1a) and is shaft-like base rod portion (1b), above-mentioned base rod portion (1b) outside has screw thread, above-mentioned base head (1a) outer end has spherically recessed bore groove (1a1), above-mentioned base head (1a) is inner and base rod portion (1b) the inner is connected and base head (1a) and base rod portion (1b) are integral type structure, and the method comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, on bar blank, base head (1a) is processed by method for turning, obtain blank semi-finished product, blank semi-finished product turn around clamping after lathe, process in shaft-like base rod portion (1b) by method for turning again, finally adopt rolled thread or thread rolling processing method to process external screw thread on base rod portion (1b);
B, processing bore groove: process spherically recessed bore groove (1a1) in the outer end of base head (1a) by method for turning;
C, base bulk heat treatmet: base (1) entirety is heat-treated, the hardness making ball base (1) overall is HRC20-39.5;
D, base head high-frequency quenching: separately high-frequency quenching is carried out to base head (1a), make base head (1a) hardness be HRC40-60;
E, ramming: ramming process is carried out to base (1) entirety.
2. the processing method of Universal caster base according to claim 1, is characterized in that, carries out chamfering or fillet process in described steps A to the edge of base (1) blank.
3. the processing method of Universal caster base according to claim 2, is characterized in that, first carries out rough turn by method for turning to bore groove (1a1) in described steps A, and then carries out finish turning to bore groove (1a1).
4. the processing method of the Universal caster base according to claim 1 or 2 or 3, it is characterized in that, in described step C, base (1) entirety is quenched, the hardness making base (1) overall is HRC55-65, described base (1) entirety carries out tempering again after Quenching Treatment, and the hardness making base (1) overall is HRC20-39.5.
5. the processing method of the Universal caster base according to claim 1 or 2 or 3, it is characterized in that, first being inserted by base head (1a) in described step D has in activated carburizing medium, be heated to the single phase austenite district of 900-950 degrees Celsius, after being incubated enough 2-4 hours, make the active atoms of carbon decomposited in carburizing medium infiltrate base top layer, thus obtain top layer high-carbon, base head (1a) inside still keeps original composition.
6. the processing method of Universal caster base according to claim 5, it is characterized in that, high-frequency quenching is carried out to the base head (1a) after carburizing, base head (1a) hardness is made to be HRC70-85, after described base head (1a) carries out high-frequency quenching, tempering is carried out to it, make base head (1a) hardness be HRC40-60.
7. the processing method of the Universal caster base according to claim 1 or 2 or 3, is characterized in that, evenly zinc-plated at base (1) outer surface by galvanized method after described step e.
8. the processing method of Universal caster base, Universal caster base (1) comprises cylindrical base head (1a) and is shaft-like base rod portion (1b), above-mentioned base rod portion (1b) outside has screw thread, above-mentioned base head (1a) outer end has spherically recessed bore groove (1a1), above-mentioned base head (1a) is inner and base rod portion (1b) the inner is connected and base head (1a) and base rod portion (1b) are integral type structure, and the method comprises the following steps:
A, Vehicle Processing blank: the bar blank being blocked or obtained by metal forging preseting length on raw material bar, after bar blank clamping is on lathe, on bar blank, base head (1a) is processed by method for turning, obtain blank semi-finished product, blank semi-finished product turn around clamping after lathe, process in shaft-like base rod portion (1b) by method for turning again, finally adopt rolled thread or thread rolling processing method to process external screw thread on base rod portion (1b);
B, processing bore groove: process spherically recessed bore groove (1a1) in the outer end of base head (1a) by method for turning;
C, base bulk heat treatmet: base (1) entirety is heat-treated, the hardness making ball base (1) overall is HRC20-39.5;
D, the process of base head heat: separately base head (1a) is heat-treated, make base head (1a) hardness be HRC40-60;
E, ramming: ramming process is carried out to base (1) entirety.
9. the processing method of Universal caster base according to claim 8, is characterized in that, carries out chamfering or fillet process in described steps A to the edge of base (1) blank.
10. the processing method of Universal caster base according to claim 9, is characterized in that, first carries out rough turn by method for turning to bore groove (1a1) in described steps A, and then carries out finish turning to bore groove (1a1).
The processing method of the Universal caster base described in 11. according to Claim 8 or 9 or 10, it is characterized in that, in described step C, base (1) entirety is quenched, the hardness making base (1) overall is HRC55-65, described base (1) entirety carries out tempering again after Quenching Treatment, and the hardness making base (1) overall is HRC20-39.5.
The processing method of the Universal caster base described in 12. according to Claim 8 or 9 or 10, it is characterized in that, first being inserted by base head (1a) in described step D has in activated carburizing medium, be heated to the single phase austenite district of 900-950 degrees Celsius, after being incubated enough 2-4 hours, make the active atoms of carbon decomposited in carburizing medium infiltrate base top layer, thus obtain top layer high-carbon, base head (1a) inside still keeps original composition.
The processing method of 13. Universal caster bases according to claim 12, it is characterized in that, base head (1a) after carburizing is heat-treated, base head (1a) hardness is made to be HRC70-85, described base head (1a) is heat-treated and is carried out tempering to it afterwards, makes base head (1a) hardness be HRC40-60.
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| CN112894348A (en) * | 2021-01-19 | 2021-06-04 | 科捷智能科技股份有限公司 | Assembling and processing method for bilateral universal conveying balls |
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| CN104588999B (en) | 2017-02-01 |
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