CN113090664A

CN113090664A - Plastic-impregnated bearing retainer

Info

Publication number: CN113090664A
Application number: CN202110355820.2A
Authority: CN
Inventors: 郑广会; 赵培振
Original assignee: Shandong Golden Empire Precision Machinery Technology Co Ltd
Current assignee: Shandong Golden Empire Precision Machinery Technology Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-07-09
Anticipated expiration: 2041-04-01
Also published as: CN113090664B

Abstract

The invention discloses a plastic-impregnated bearing retainer which comprises an annular main body, wherein the annular main body is provided with pockets, the outer surface of the annular main body is coated with a plastic layer, the plastic-impregnated bearing retainer also comprises process holes, the process holes are arranged in the annular main body and are positioned between the adjacent pockets, and the plastic layer is coated on the outer surface of the annular main body formed with the pockets and the process holes. The process holes are processed on the annular main body to balance the overall strength, so that when the rolling bearing rotates, the centrifugal force and the inertia force which are applied to the retainer are distributed in the overall structure in a balanced manner, the phenomenon that structural abrasion occurs between the retainer, a bearing rolling body and an inner ring and an outer ring of the bearing due to the problem of unbalanced strength after the retainer is subjected to larger centrifugal force and impact and vibration is avoided, the imbalance of the abrasion resistance of the retainer caused by cracking of the plastic layer is avoided, the service life and the working effect of the retainer are sharply reduced, and even the bad phenomenon that the retainer is broken occurs.

Description

Plastic-impregnated bearing retainer

Technical Field

The invention relates to the technical field of bearings, in particular to a plastic-impregnated bearing retainer.

Background

The surface treatment of wind power products in the current market mainly comprises products of nitriding, phosphating and sand blasting, the nitriding and phosphating are always suffered by people due to environmental protection problems, and the two processes have great defects; if the cage is hardened (nitrided), the bearing ring is the most vulnerable and wearing part, and as the hardness of the cage increases, it becomes brittle and reduces the toughness of the product. The plasticized product has the environmental protection factor determined by the process advantages, has the characteristics of wear resistance and rust resistance, and has the advantages of nitriding and phosphating, so that the plasticizing process has a very high development prospect.

In the wind power bearing in the prior art, the wear resistance of the bearing retainer is a main consideration index in the normal operation process, the bearing retainer manufactured by the conventional plasticizing process basically comprises the steps of processing a base plate, bending and connecting the base plate into a ring shape, processing pockets on a ring-shaped plate, and performing a plastic soaking process after the pockets are processed, so that a plastic layer is attached to the outer wall of the ring-shaped plate, the wear resistance is effectively improved on the premise that the retainer supports, but after the pockets are processed on the ring-shaped plate, the structural strength of the pocket positions is greatly reduced compared with that before the pockets, the strength of the plate part between the adjacent pockets still maintains the strength of the original ring-shaped plate, the strength of the plate part near the pockets is smaller than that between the adjacent pockets, the strength of the whole retainer is unbalanced, and when the bearing rotates, when the retainer bears larger centrifugal force, the bearing is subjected to, After impact and vibration, the unbalanced problem of intensity leads to moulding the layer easily and takes place the fracture, makes the wearability of holder appear unbalance, leads to the life and the effect of holder to sharply subtract, moulds the layer and takes place the fracture and drop the inner structure that also can influence the bearing, and the wearing and tearing of aggravation rotation in-process also lead to the main part of holder to break off easily and wait trouble, is the main factor that limits holder life, the urgent solution that awaits the opportune moment.

Disclosure of Invention

The invention provides a plastic-impregnated bearing retainer, which is characterized in that a process hole is processed on an annular main body to balance the overall strength, so that when a rolling bearing rotates, the centrifugal force and the inertia force borne by a retainer are distributed in an overall structure in a balanced manner, the phenomenon of structural abrasion among the retainer, a bearing rolling body and an inner ring and an outer ring of the bearing caused by the problem of unbalanced strength after the retainer is subjected to larger centrifugal force, impact and vibration is avoided, the bad phenomena of unbalanced abrasion resistance of the retainer, sharp reduction of the service life and the working effect of the retainer and even breakage of the retainer caused by cracking of a plastic layer are further avoided, and the technical problems explained in the background technology are effectively solved.

In order to solve the technical problem, the invention adopts the following technical scheme:

the utility model provides a soak and mould bearing retainer, includes annular main part, annular main part is equipped with the pocket hole, the cladding of annular main part surface has moulds the layer, still includes the fabrication hole, the fabrication hole set up in annular main part, and be located adjacently part between the pocket hole, mould the layer cladding in the shaping have pocket hole and fabrication hole the surface of annular main part.

When the rolling bearing works, the inner rolling bodies are positioned in the bearing retainer, the rolling bodies are equidistantly separated in the pockets by the bearing retainer and are uniformly distributed on the periphery of the rolling bearing, so that the rolling bodies can be guided by the bearing retainer to rotate on a correct track and are retained in the rolling bearing, and the rolling bearing bears uniform load and operates quietly and at a constant speed. The rolling element and the bearing retainer all can receive the centrifugal force towards the antifriction bearing outside in the antifriction bearing course of operation, the effect of inertial force, if each position intensity of bearing retainer is uneven this moment, will bring the centrifugal force that different positions received on the bearing retainer, inertial force distributes unevenly, lead to bearing retainer skew in the bearing, rock, bump with the bearing inner and outer lane, frictional wear and generate heat, and then cause the rolling element to take place to vibrate, the load is uneven, cause the part in the bearing to take place structural slip each other, friction and vibrations, can cause part burn and breakdown when serious, cause antifriction bearing normal use.

When the retainer leads to taking place structural friction with the rolling element, bearing inner and outer lane because of the intensity is uneven, mould the layer and can take place the fracture, especially under the state of long-term work, mould the layer and still can break off, drop because of wearing and tearing for the wearability of retainer appears unbalance, influences the life-span and the working effect of retainer, and then influences the life-span of bearing. When the plastic layer falls off, foreign matters are also accumulated, so that the abrasion and the heating of the retainer in the rotation process of the bearing are aggravated, the vicious circle is caused, and the main body of the retainer is broken.

By last, this scheme makes the annular main part of bearing holder have the pocket hole that holds the rolling element and the fabrication hole of balanced strength, make bearing holder overall structure intensity distribution balanced, at antifriction bearing during operation, the centrifugal force that the bearing holder received, inertial force evenly distributed is at each position, foretell adverse reaction has been avoided, can guarantee to mould the stable existence of layer, provide good wearability for the holder, make antifriction bearing can normal operating steadily, antifriction bearing's life has been improved, avoid frequent change and maintenance, make equipment can be normal, long-term use. In addition, the structural design of the fabrication hole can also play a role in storing grease, so that the retainer can contain and store more grease, the lubricating effect is improved, in the working and rotating process of the bearing, tiny impurities are easy to appear in the contact friction process of the outer surface of the annular main body, the unique design of the fabrication hole can play a role in temporarily storing the impurities, foreign matter impurities are reduced from being mixed in the lubricating oil, the lubricating effect is reduced, the lubricating performance of the lubricating oil can be improved, the abrasion among the retainer, the rolling body, the bearing inner ring and the bearing outer ring is reduced, and the service life of the retainer is prolonged; meanwhile, the added fabrication holes can also play a weight reduction effect, and the large-scale retainer conforms to the lightweight design concept, so that the cost is reduced, and the quality and the competitiveness of the product are improved.

Furthermore, a material guiding part is arranged at the joint position of the process hole and the inner side wall and/or the outer side wall of the annular main body, and the material guiding part is used for increasing the fluidity of grease inside and outside the process hole. From this, gathering, flow and the circulation of guide portion guidable grease makes grease business turn over fabrication hole more smooth and easy, improves lubricated effect, and the foreign matter is also can be easily smooth and easy through gathering, flow and circulation of guide portion under the drive of grease, prevents that the foreign matter from being mingled with and reducing lubricated effect in lubricating oil.

As one implementation manner, the material guiding part is a chamfer structure. The chamfer structure provides a guide inclined plane for the flow of the grease, so that the grease smoothly enters and exits the process hole along the chamfer structure.

As another implementation manner, the material guiding portions are provided as a plurality of material guiding grooves, and the material guiding grooves are uniformly arranged along the circumferential direction of the fabrication hole at intervals. The guide chute guides the gathering, flowing and circulating of the grease in different modes, the lubricating effect is improved, and the grease can be gathered, flowed and circulated smoothly through the guide chute. The baffle box is evenly arranged along the circumferential direction of the fabrication hole at intervals, further balances the overall structure strength of the retainer, equivalently increases the storage space of the grease on the premise of not influencing the overall strength of the retainer, and simultaneously makes the grease flow evenly balanced.

Further, the angle range of the chamfer is 20-60 degrees. Thereby, the chamfer structure can provide good and remarkable guiding effect for the flowing circulation of the grease.

Further, the guide chute is a straight chute or an arc chute. Therefore, different guide chutes can be selected according to different processing, material and size requirements, and the applicability of the product is improved.

Furthermore, the bottom of the guide chute is provided with an inclined surface. Therefore, the guide chute can better play a role in guiding and effectively guide the grease to enter the fabrication hole.

Furthermore, a plurality of process holes are correspondingly formed in the same annular main body, and are uniformly arranged at intervals along the circumferential direction of the annular main body. The uniform arrangement of the fabrication holes effectively ensures the balance of the strength distribution of the annular main body, so that when the rolling bearing rotates, the loads of all parts of the annular main body are balanced, and the structural abrasion between the plastic layer and other parts in the bearing is avoided.

Furthermore, a central line parallel to the axial direction of the annular main body is arranged between the adjacent pockets, and the fabrication holes are arranged along the central line. Therefore, the position of the process hole is specified, the overall structural strength of the annular main body can be balanced by the process hole, and structural abrasion between the plastic layer and other parts in the bearing is avoided.

In a preferred implementation, the center line has an O point closest to the centers of two adjacent pockets, the center line has an a point and a B point intersecting the edge of the annular body, the a point and the B point have the same first strength, the O point has a second strength, the first strength is greater than the second strength, and a strength variation curve can be formed from the a point to the O point to the B point, a half of the sum of the first strength and the second strength is set as a third strength, in the strength variation curve, the third strength corresponds to a P1 point and a P2 point, the P1 point is located between the a point and the O point, the P2 point is located between the B point and the O point, and the fabrication hole is located at the P1 point and/or the P2 point.

Therefore, the strength (third strength) of the positions (P1 point and/or P2 point) of the process holes is balanced with the strength of the parts of the annular main body between the pockets, the strength distribution of all parts of the annular main body is further uniformly balanced, and structural abrasion between the plastic layer and other parts in the bearing is avoided.

Furthermore, the inner side hole wall of the fabrication hole is provided with an inwards concave storage part. The storage part is used for storing grease and foreign matters, so that the flowing space of the grease in the rolling bearing can be increased, the grease flows smoothly, the lubricating performance is enhanced, the rolling performance of the rolling body is enhanced, the friction of each part in the rolling bearing is reduced, and the abrasion and the heating are reduced; the space that provides the gathering for the external foreign matter granule that gets into the bearing or lead to the fact by the bearing inner part wearing and tearing are cracked, under the effect of rotation centrifugal force, makes foreign matter impurity gather in the storage more easily to form the precipitation effect, play the "purification" effect to lubricating oil, avoid the too much impurity aggravation wearing and tearing of inside grease gathering of bearing long-time work back. Therefore, structural abrasion between the plastic layer and other parts in the bearing is effectively reduced with the aid of grease lubrication.

As one implementation manner, the storage part is provided with at least two inner holes, and the inner holes are uniformly arranged along the inner hole wall of the fabrication hole at intervals. Therefore, the storage part is provided, the balance of the whole structure of the bearing retainer is further ensured, and structural abrasion between the plastic layer and other parts in the bearing is avoided.

As another implementation manner, the storage portions are grooves, and at least two grooves are uniformly arranged at intervals along the circumferential direction of the inner hole wall of the fabrication hole. Therefore, the bearing retainer is convenient to process and manufacture, the integral structure balance of the bearing retainer is further ensured, and structural abrasion between the plastic layer and other parts in the bearing is avoided.

As another implementation, the reservoir is provided as an annular groove. Therefore, the bearing is convenient to process and manufacture, the space of the storage part is increased, and structural abrasion between the plastic layer and other parts in the bearing is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an exemplary embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a top view in an exemplary embodiment of the invention;

fig. 3 is a schematic structural view of a material guiding portion according to an exemplary embodiment of the present invention;

fig. 4 is a schematic structural view of a material guiding portion according to an exemplary embodiment of the present invention;

FIG. 5 is a schematic diagram of a process orifice in an exemplary embodiment of the invention;

FIG. 6 is a graph showing the variation of the strength of a molded-in-place bearing retainer on the centerline of a tooling hole in an exemplary embodiment of the invention;

FIG. 7 is a schematic structural diagram of a storage portion according to an exemplary embodiment of the invention;

FIG. 8 is a schematic structural diagram of a storage portion according to an exemplary embodiment of the invention;

FIG. 9 is a schematic structural view of a storage portion according to an exemplary embodiment of the invention;

1. an annular body; 2. a pocket hole; 3. a plastic layer; 4. a fabrication hole; 5. a material guide part; 6. a storage part.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Referring to fig. 1, the invention provides a plastic-impregnated bearing retainer, wherein a fabrication hole 4 is processed on an annular main body 1 to balance the overall strength, so that when a rolling bearing rotates, centrifugal force and inertia force borne by the retainer are distributed in an overall structure in a balanced manner, and the phenomenon that structural abrasion occurs among the retainer, a bearing rolling element and inner and outer rings of the bearing due to the problem of unbalanced strength after the retainer is subjected to larger centrifugal force, impact and vibration is avoided, and further the bad phenomena that the abrasion resistance of the retainer is unbalanced, the service life and the working effect of the retainer are sharply reduced and even the retainer is broken due to cracking of a plastic layer 3 are avoided.

The following technical scheme is adopted:

referring to fig. 1 and 2, the present invention includes an annular main body 1, the annular main body 1 is provided with pockets 2, the outer surface of the annular main body 1 is coated with a plastic layer 3, the present invention further includes process holes 4, the process holes 4 are disposed in the annular main body 1 and are located between adjacent pockets 2, and the plastic layer 3 is coated on the outer surface of the annular main body 1 formed with the pockets 2 and the process holes 4.

When the rolling bearing works, the inner rolling bodies are positioned in the bearing retainer, the rolling bodies are equidistantly separated in the pockets 2 by the bearing retainer and are uniformly distributed on the periphery of the rolling bearing, so that the rolling bodies can be guided by the bearing retainer to rotate on a correct track and are retained in the rolling bearing, and the rolling bearing bears uniform load and operates quietly and at a constant speed. The rolling element and the bearing retainer all can receive the centrifugal force towards the antifriction bearing outside in the antifriction bearing course of operation, the effect of inertial force, if each position intensity of bearing retainer is uneven this moment, will bring the centrifugal force that different positions received on the bearing retainer, inertial force distributes unevenly, lead to bearing retainer skew in the bearing, rock, bump with the bearing inner and outer lane, frictional wear and generate heat, and then cause the rolling element to take place to vibrate, the load is uneven, cause the part in the bearing to take place structural slip each other, friction and vibrations, can cause part burn and breakdown when serious, cause antifriction bearing normal use.

When the retainer leads to taking place structural friction with the rolling element, bearing inner and outer lane because of the intensity is uneven, mould layer 3 and can take place the fracture, especially under the state of long-term work, mould layer 3 and still can break off, drop because of wearing and tearing for the wearability of retainer appears unbalance, influences the life-span and the working effect of retainer, and then influences the life-span of bearing. When the plastic layer 3 falls off, foreign matters are also accumulated, so that the abrasion and the heating of the retainer in the bearing rotation process are aggravated, the vicious circle is caused, and the main body of the retainer is broken.

By last, this scheme makes the annular main part 1 of bearing holder have the pocket hole 2 and the fabrication hole 4 of balanced intensity that hold the rolling element, make bearing holder overall structure intensity distribution balanced, at antifriction bearing during operation, the centrifugal force that the bearing holder received, inertial force evenly distributed is at each position, foretell adverse reaction has been avoided, can guarantee to mould layer 3 and stably exist, provide good wearability for the holder, make antifriction bearing can normal operating steadily, antifriction bearing's life has been improved, avoid frequent change and maintenance, make equipment can be normal, long-term use.

The bearing replacement device is particularly suitable for occasions which need long-term use and are inconvenient to maintain and replace bearings due to various reasons, such as windmills for wind power generation.

Referring to fig. 3, a material guiding portion 5 is disposed at a joint position of the fabrication hole 4 and the inner sidewall and/or the outer sidewall of the annular main body 1, and the material guiding portion 5 is used for increasing fluidity of grease inside and outside the fabrication hole 4.

When the rolling bearing rotates, under the action of centrifugal force and inertia force, the bearing retainer and the inner ring and the outer ring of the bearing are extruded in different degrees, the grease has a movement trend towards the outer ring of the bearing, and can circularly flow between the bearing retainer and the inner ring and the outer ring of the bearing due to extrusion, therefore, the material guide part 5 can guide the gathering, flowing and circulating of the grease, the lubricating effect is improved, and foreign matters can be easily and smoothly gathered, flowed and circulated by the material guide part 5 under the driving of the grease. In addition, the grease can carry foreign matters to flow circularly, so that the phenomenon that the foreign matters exist between the pocket 2 and the inner rolling body of the bearing or between the annular main body 1 and the inner ring and the outer ring of the bearing, structural abrasion occurs between the rolling body, the bearing retainer and the inner ring and the outer ring of the bearing, more parts are damaged, and vicious circle is formed is avoided.

Referring to fig. 3, the material guide portion 5 has a chamfered structure. The chamfer structure provides a guide inclined plane for guiding the grease and foreign matters, and further the grease can smoothly flow in the bearing in a rotating way under the guidance of the material guide part 5.

Referring to fig. 4, the material guiding portion 5 is a plurality of material guiding grooves, and the material guiding grooves are uniformly spaced along the circumferential direction of the fabrication hole 4. The guide chute guides the gathering, flowing and circulating of the grease in different modes, and improves the lubricating effect. The baffle boxes are uniformly arranged at intervals along the circumferential direction of the process holes 4, so that the overall structural strength of the retainer is further balanced, the grease flow is uniform and balanced, and the applicability of the product application environment is improved.

Referring to fig. 3, the angle of the chamfer ranges from 20 ° to 60 °. Therefore, the chamfering structure can provide good and remarkable guiding effect for the rotary circulation of the grease and the foreign matters.

As a further optimization, the guide chute is a straight chute or an arc chute. Therefore, different guide chutes can be selected according to different processing, material and size requirements, and the applicability of the product is improved.

Referring to fig. 4, the bottom of the guide chute is provided with an inclined surface. Therefore, when the bearing works, the grease and the foreign matters can quickly, efficiently and smoothly enter the guide chute along the bottom inclined plane of the guide chute under the action of centrifugal force and inertia force, the bottom inclined plane of the guide chute can play a better role in guiding, the gathering, flowing and circulating of the grease are effectively guided, and the foreign matters with improved lubricating effect can be easily and smoothly gathered, flowed and circulated through the guide chute under the driving of the grease.

Referring to fig. 1, a plurality of process holes 4 are correspondingly formed in the same annular main body 1, and the plurality of process holes 4 are uniformly spaced in the circumferential direction of the annular main body 1. The uniform arrangement of the process holes 4 effectively ensures the balance of the strength distribution of the annular main body 1, so that when the rolling bearing rotates, the load of each part of the annular main body 1 is balanced, the deviation can not occur, and the structural abrasion between the plastic layer 3 and other parts in the bearing is avoided.

Referring to fig. 5, adjacent pockets 2 have a center line therebetween in a direction parallel to the axis of the ring body 1, and the process holes 4 are arranged along the center line. Therefore, the position of the process hole 4 is specified, the overall structural strength of the annular main body 1 can be balanced by the process hole 4, the retainer is further prevented from being deviated and dislocated during the operation of the bearing, and structural abrasion between the plastic layer 3 and other parts in the bearing is avoided.

Referring to fig. 5 and 6, the center line has an O point nearest to the centers of two adjacent pockets 2, the center line has an a point and a B point intersecting the edge of the ring body 1, the a point and the B point have the same first intensity, the O point has a second intensity, the first intensity is greater than the second intensity from the a point to the O point to the B point, and a variation curve of the intensity shown in fig. 6 can be formed, a half of the sum of the first intensity and the second intensity is set as a third intensity, in the variation curve of the intensity, the third intensity corresponds to a point P1 and a point P2, the point P1 is between the a point and the O point, the point P2 is between the B point and the O point, and the hole of the fabrication hole 4 is set at the point P1 and/or the point P2.

Therefore, the strength (third strength) of the positions (P1 point and/or P2 point) of the process holes 4 is balanced with the strength of the parts of the annular main body 1 between the pockets 2, the strength distribution of each part of the annular main body 1 is further enabled to be even and balanced, the mentioned bad phenomena are avoided, structural abrasion between the plastic layer 3 and other parts in the bearing is avoided, and the working reliability of the bearing is improved.

Referring to fig. 7, the inner hole wall of the fabrication hole 4 is provided with a concave storage part 6.

When the rolling bearing rotates, under the action of centrifugal force and inertia force, the bearing retainer and the inner and outer rings of the bearing are extruded in different degrees, the grease has a movement trend towards the outer ring of the bearing, and can circularly flow between the bearing retainer and the inner and outer rings of the bearing due to extrusion, the storage part 6 is arranged to increase the flowing space of the grease, in addition, the grease can circularly flow with foreign matters, the foreign matters are prevented from being clamped between the pocket hole 2 and the inner rolling body of the bearing or between the annular main body 1 and the inner and outer rings of the bearing, structural abrasion is caused between the rolling body, the bearing retainer and the inner and outer rings of the bearing, more parts are damaged, and the phenomenon of vicious circle is formed

The storage part 6 is used for storing grease and foreign matters, so that the flowing space of the grease in the rolling bearing can be increased, the grease flows smoothly, the lubricating performance is enhanced, the rolling performance of a rolling body is enhanced, the friction of each part in the rolling bearing is reduced, and the abrasion and the heating are reduced; provides a gathering space for foreign particles entering the bearing from the outside or caused by the wear and tear of parts in the bearing. Therefore, with the aid of grease lubrication, structural wear between the plastic layer 3 and other parts in the bearing is effectively reduced.

Referring to fig. 7, the storage portion 6 is an inner hole, and at least two inner holes are provided and uniformly spaced along the inner hole wall of the fabrication hole 4. Therefore, the storage part 6 is provided, the balance of the whole structure of the bearing retainer is further ensured, and the structural abrasion between the plastic layer 3 and other parts in the bearing is avoided.

Referring to fig. 8, the reservoirs 6 are formed as grooves, and at least two grooves are uniformly spaced along the circumferential direction of the inner hole wall of the fabrication hole 4. Therefore, the bearing retainer is convenient to process and manufacture, the integral structure balance of the bearing retainer is further ensured, and structural abrasion between the plastic layer 3 and other parts in the bearing is avoided.

Referring to fig. 9, the reservoir 6 is provided as an annular groove. Therefore, the processing and the manufacturing are convenient, the space of the storage part 6 is increased, and the structural abrasion between the plastic layer 3 and other parts in the bearing is avoided.

As will be appreciated by those skilled in the art to which this application pertains, the reservoir 64 is a trench in a hole and may be formed by boring, typically using a single-blade boring tool, in a boring machine, a machining center, and a combination machine.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a soak and mould bearing retainer, includes annular main part, annular main part is equipped with the pocket hole, the cladding of annular main part surface has moulds the layer, its characterized in that still includes the fabrication hole, the fabrication hole set up in annular main part, and be located adjacently part between the pocket hole, mould the layer cladding in the shaping have pocket hole and fabrication hole the surface of annular main part.

2. The plastic-impregnated bearing retainer according to claim 1, wherein a material guiding portion is disposed at a joint position of the fabrication hole and the inner side wall and/or the outer side wall of the annular main body, and the material guiding portion is used for increasing fluidity of grease inside and outside the fabrication hole.

3. The plastic-impregnated bearing holder according to claim 2, wherein the material guiding portion is a chamfered structure.

4. The plastic-impregnated bearing retainer as claimed in claim 2, wherein the material guiding portion is a plurality of material guiding grooves, and the material guiding grooves are uniformly spaced along the material guiding grooves along the circumferential direction of the fabrication hole.

5. A plastic impregnated bearing retainer according to claim 3 wherein the angle of said chamfer is in the range 20 ° to 60 °.

6. The plastic impregnated bearing holder according to claim 4, wherein the guiding chute is a straight chute or an arc chute.

7. A plastic impregnated bearing holder according to claim 4 or 6 wherein the bottom of the chute is bevelled.

8. The impregnated bearing retainer as recited in claim 1, wherein a plurality of said tooling holes are correspondingly formed in the same annular body, and are evenly spaced along a circumferential direction of the annular body.

9. The impregnated bearing retainer as recited in claim 1 or 8, wherein adjacent pockets have a centerline therebetween in a direction parallel to an axis of the annular body, the tooling holes being disposed along the centerline.

10. The plastic impregnated bearing retainer of claim 9, wherein said centerline has a point O nearest to the center of two adjacent pockets, said centerline has a point a and a point B intersecting the annular body edge, said points a and B have the same first strength, said point O has a second strength, said first strength is greater than said second strength, said points a to B are capable of forming a strength variation curve, half of the sum of said first and second strengths is set as a third strength, in said strength variation curve, said third strength corresponds to a point P1 and a point P2, said point P1 is located between the points a and O, said point P2 is located between the points B and O, and said process hole holes are located at said points P1 and/or P2.

11. The plastic impregnated bearing retainer as recited in claim 1, wherein the inner bore wall of the fabrication bore is provided with a recessed reservoir.

12. The plastic impregnated bearing retainer as recited in claim 11, wherein said reservoir is provided as an inner bore, said inner bore being provided in at least two spaced apart uniform positions along an inner bore wall of said fabrication bore.

13. The plastic impregnated bearing holder according to claim 11, wherein the storage portion is provided as grooves, and at least two grooves are provided at regular intervals in a circumferential direction of an inner hole wall of the fabrication hole.

14. A plastic impregnated bearing retainer according to claim 11 wherein said reservoir is provided as an annular groove.