CN210254940U - Inner hole rolling device - Google Patents
Inner hole rolling device Download PDFInfo
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- CN210254940U CN210254940U CN201921014659.7U CN201921014659U CN210254940U CN 210254940 U CN210254940 U CN 210254940U CN 201921014659 U CN201921014659 U CN 201921014659U CN 210254940 U CN210254940 U CN 210254940U
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- retainer
- roller
- mandrel
- size adjusting
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Abstract
The utility model discloses an inner hole rolling device, which comprises a tool bit and a tool bar, wherein the tool bit comprises a mandrel, a pressure taper sleeve, a retainer and a roller, the pressure taper sleeve is fixedly sleeved on the mandrel, the retainer is sleeved outside the mandrel, and the inner end surface of the roller is tightly abutted with the outer conical surface of the pressure taper sleeve; the roller is circumferentially arranged at one end of the retainer, the retainer is provided with a front tip and a rear tip, the front tip is abutted against the upper surface of the roller, and the rear tip is abutted against the lower surface of the roller. The rolling processing device has the advantages that the front center and the rear center are arranged in the retainer, the axial clearance of the roller is controlled by the front center and the rear center, and the roller is prevented from moving back and forth in the processing process to influence the processing precision and the roughness, so that the rolling processing precision is ensured.
Description
Technical Field
The utility model relates to a hole processing equipment especially relates to a hole rolling press device.
Background
The surface treatment of the inner hole of the existing oil cylinder is generally processed by adopting a honing process, but a large amount of metal abrasive dust and sand strip sand dust can be generated in the honing process, if the coolant is selected improperly or fails, the flow of the coolant is insufficient, and the like, the abrasive dust can be adhered to the oilstone or the processed surface, the honing surface is scratched or cracked, and the service life of the oilstone can be shortened; and the equipment cost is high, and millions and even higher parts are needed to purchase imported machine tools to meet high precision requirements.
Therefore, the existing manufacturers adopt a rolling process to process the inner hole of the oil cylinder, the rolling process is a non-cutting process, and the purpose of changing the surface structure, mechanical characteristics, shape and size is achieved by flattening the microscopic unevenness of the surface of a workpiece by using the plastic deformation of metal at normal temperature. But the existing rolling head still has the problem of insufficient machining precision.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a hole rolling press device improves hole surface machining precision, improves the surface hardness, uses easy operation, reduces the processing cost and reduces area.
The purpose of the utility model is realized by adopting the following technical scheme:
an inner hole rolling device comprises a tool bit and a tool bar, wherein the tool bit comprises a mandrel, a pressure taper sleeve, a retainer and a roller, the pressure taper sleeve is fixedly sleeved on the mandrel, the retainer is sleeved outside the mandrel, and the inner end surface of the roller is tightly abutted to the outer conical surface of the pressure taper sleeve; the roller is circumferentially arranged at one end of the retainer, a front tip and a rear tip are arranged on the retainer, the front tip abuts against the upper surface of the roller, and the rear tip abuts against the lower surface of the roller.
Further, the retainer comprises a retainer front cover and a retainer rear cover, a notch is arranged on the retainer front cover, and the notch and the end face of the retainer rear cover form the roller groove.
Furthermore, a plurality of roller grooves are circumferentially arranged at one end of the retainer, and the rollers are embedded in the roller grooves; the inner walls of the roller grooves, facing the upper surface and the lower surface of the roller, are respectively provided with a first limiting groove and a second limiting groove, the first limiting groove is internally provided with the front tip, and the second limiting groove is internally provided with the rear tip. Further, the sharp point of the front center is abutted against the upper surface of the roller; the sharp point of the rear center is abutted against the lower surface of the roller.
Further, the holder front cover and the holder rear cover are fixedly connected by bolts.
Furthermore, the front end of the mandrel is provided with an annular boss, the pressure taper sleeve is positioned at the rear side of the annular boss, and the pressure taper sleeve is fixedly connected with the large end part of the mandrel through a nut and a shaft key.
The size adjusting sleeve is sleeved on the mandrel and is in threaded connection with the mandrel; the size adjusting sleeve is in linkage fit with the retainer and drives the retainer to move axially.
Furthermore, two thrust ball bearings are sleeved on the outer side of the size adjusting sleeve, one of the thrust ball bearings is located on the inner side of the retainer and attached to the inner wall of the retainer, and the other thrust ball bearing is located on the outer side of the retainer and attached to the outer wall of the retainer; the size adjusting sleeve is further provided with a linkage nut and a linkage screw, the size adjusting sleeve is in threaded connection with the linkage nut, and the linkage screw penetrates through the linkage nut and is fixedly connected with the size adjusting sleeve.
Furthermore, a locking nut is arranged on the rear side of the linkage nut.
Furthermore, a pin hole is formed in the small end of the mandrel and detachably connected with the cutter bar through a pin shaft.
Compared with the prior art, the beneficial effects of the utility model reside in that: the front center and the rear center are arranged in the retainer, and the axial clearance of the roller is controlled by the front center and the rear center, so that the influence of the front and rear movement of the roller on the processing precision and roughness in the processing process is avoided, and the precision of rolling processing is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a tool bit of an inner hole rolling device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another angle of the tool bit of the inner hole rolling device according to the embodiment of the present invention;
fig. 3 is a schematic sectional structure view of a tool bit of the inner hole rolling device according to an embodiment of the present invention.
In the figure: 10. a mandrel; 11. an annular boss; 12. a nut; 13. a shaft key; 14. a pin hole; 20. a pressure cone sleeve; 30. a holder; 31. a roller; 32. a front center; 33. a rear center; 34. a sharp point; 35. a roller groove; 351. a first limit groove; 352. a second limit groove; 36. a holder front cover; 361. a notch; 37. a holder rear cover; 38. a bolt; 40. a size adjusting sleeve; 41. an annular step; 42. a thrust ball bearing; 43. a linkage nut; 44. a linkage screw; 45. locking the nut; 46. and (4) a groove.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Referring to fig. 1 to 3, an inner bore rolling device according to an embodiment of the present invention will be explained in the following description, in which a front center and a rear center are provided on a holder to control an axial gap of a roller, thereby improving machining accuracy.
As shown in fig. 1 to fig. 3, the inner bore rolling device of the present embodiment includes a tool bit and a tool bar (not shown), the tool bit includes a mandrel 10, a pressure taper sleeve 20, a retainer 30 and a roller 31, the pressure taper sleeve 20 is fixedly sleeved on the mandrel 10, the retainer 30 is sleeved outside the mandrel 10, the pressure taper sleeve 20 is located between the retainer 30 and the mandrel 10, and an inner end surface of the roller 31 is tightly abutted to an outer conical surface of the pressure taper sleeve 20; the roller 31 is circumferentially provided at one end of the holder 30, the holder 30 is provided with a front center 32 and a rear center 33, the front center 32 abuts against the upper surface of the roller 31, and the rear center 33 abuts against the lower surface of the roller 31.
In this embodiment, the pressure cone sleeve 20 is sleeved outside the mandrel 10, the retainer 30 is further disposed outside the pressure cone sleeve 20, and the roller 31 is embedded in the retainer 30, so that the inner end surface of the roller 31 is tightly attached to the outer conical surface of the pressure cone sleeve 20, and the diameter of the rolling cutter can be adjusted by using different taper positions on the outer conical surface of the pressure cone sleeve 20. Meanwhile, in the embodiment, the front center 32 and the rear center 33 in the retainer 30 are used for positioning and pressing the roller 31, the axial clearance of the roller 31 is controlled, the roller 31 is prevented from moving back and forth in the machining process, the stability and the machining precision of the cutter are improved, and the roughness of the surface of the inner hole of the workpiece is improved.
Preferably, the front center 32 and the rear center 33 each include a tip portion including a point 34, and a pillar portion, the point 34 of the front center 32 being abutted against the upper surface of the roller 31; the point 34 of the rear center 33 is abutted against the lower surface of the roller 31, and the arrangement is aimed at reducing the contact area between the point 34 and the roller 31, effectively reducing the heat generated in the machining process and better controlling the precision. Because the contact area between the front center 32 and the rear center 33 and the roller 31 is large in pressure during the machining process, the abrasion of the point 34 during the machining process needs to be avoided, the axial clearance is increased, the front center 32 and the rear center 33 both adopt high-hardness materials, such as medium, low and high carbon multi-element alloy steel, high, medium and low chromium alloy cast iron, high manganese steel (ZGMn13), high manganese alloy (ZGMn13Cr2MoRe), ultra-high manganese alloy ZGMn18Cr2MoRe) and other metal materials, and can also be non-metal high-hardness materials such as A12O3 ceramic. It should be noted that the above materials are only examples, and are not limited to the materials used for the front tip 32 and the rear tip 33, and other common high hardness wear resistant materials can be used for the front tip 32 and the rear tip 33.
In order to facilitate the installation of the front center 32 and the rear center 33, the holder 30 of the present embodiment is provided with a plurality of roller grooves 35, inner walls of the roller grooves 35 facing the upper and lower surfaces of the rollers 31 are respectively provided with a first limiting groove 351 and a second limiting groove 352, the front center 32 is arranged in the first limiting groove 351, and the rear center 33 is arranged in the second limiting groove 352. When the roller is installed, the front center 32 and the rear center 33 can be placed in the corresponding grooves, and then the rollers 31 are embedded in the roller grooves 35. More specifically, the retainer 30 includes a retainer front cover 36 and a retainer rear cover 37, a notch 361 is provided in the retainer front cover 36, and the notch 361 and the end surface of the retainer rear cover 37 constitute the roller groove 35. The retainer 30 is arranged in a split structure, so that the front center 32, the rear center 33 and the rollers 31 are convenient to install, and the front center 32, the rear center 33 and the rollers 31 are prevented from being worn in the installation process.
As shown in fig. 3, the first limit groove 351 is located on the holder front cover 36, the second limit groove 352 is located on the holder rear cover 37, when the roller holder is installed, the front center 32 is placed in the notch 361 of the holder front cover 36, the pillar portion of the front center 32 enters the first limit groove 351, the pillar portion of the rear center 33 is placed in the second limit groove 352 on the end surface of the holder rear cover 37, then the roller 31 is placed in the notch 361, the holder front cover 36 and the holder rear cover 37 are closed, the sharp points 34 of the front center 32 and the rear center 33 are abutted against the roller 31, then the holder rear cover 37 is fixed behind the holder front cover 36, and the roller 31 is clamped. More specifically, the holder front cover 36 and the holder rear cover 37 are fixedly connected by the bolts 38, and are more firmly and stably fixed.
The pressure cone sleeve 20 of the present embodiment plays a role in keeping the stability of the roller 31 and adjusting the diameter size of the rolling cutter, and therefore, the installation of the pressure cone sleeve 20 is also important, as shown in fig. 3, the front end of the mandrel 10 of the present embodiment is provided with an annular boss 11, the pressure cone sleeve 20 is located at the rear side of the annular boss 11, and the pressure cone sleeve 20 is fixedly connected with the large end of the mandrel 10 through the nut 12 and the shaft key 13. As shown in the drawings, the shaft key 13 of the present embodiment is a flat key, and when actually installed, the shaft key 13 having other shapes, such as a semicircular key, may be used.
During installation, the pressure taper sleeve 20 can be sleeved from the small end of the mandrel 10 and sleeved on the large end of the mandrel 10, the key groove in the inner wall of the pressure taper sleeve 20 is aligned with the key groove in the mandrel 10, and then the flat key is inserted into the key groove, or the flat key is firstly placed into the key groove in the mandrel 10, the pressure taper sleeve 20 is sleeved from the small end of the mandrel 10, the key groove in the inner wall of the pressure taper sleeve 20 is aligned with the flat key, the pressure taper sleeve is sleeved on the large end of the mandrel 10 in a sliding mode, and at the moment, the shape of the key groove in the mandrel 10 is matched with the flat key, so that the flat key is installed more stably; after the circumferential limiting is completed, the nut 12 is sleeved on the rear side of the pressure taper sleeve 20 and screwed with the mandrel 10, the nut 12 abuts against the pressure taper sleeve 20 and locks the pressure taper sleeve 20 so that the pressure taper sleeve 20 does not axially move any more, meanwhile, the flat key limits the circumferential movement of the pressure taper sleeve 20, the stability of the pressure taper sleeve 20 is kept, and meanwhile, the stability of the roller 31 is guaranteed.
When the installation is carried out, the large end of the pressure taper sleeve 20 is arranged towards the direction of the annular boss 11, and when the diameter of the rolling cutter needs to be adjusted, the roller 31 only needs to be moved towards the large end of the pressure taper sleeve 20. In order to adjust the diameter of the rolling cutter conveniently, the inner hole rolling device of the embodiment further comprises a size adjusting sleeve 40, and the size adjusting sleeve 40 is sleeved on the small end of the mandrel 10 and is in threaded connection with the mandrel 10; the size adjusting sleeve 40 is in linkage fit with the retainer 30, drives the retainer 30 to move axially, and simultaneously drives the rollers 31 embedded on the retainer 30 to move along the outer end face of the pressure taper sleeve 20. The size adjustment sleeve 40 is rotated on the mandrel 10, and the circumferential rotation is converted into axial movement by the threads, thereby moving the retainer 30 along the axis of the mandrel 10.
More specifically, as shown in fig. 3, two thrust ball bearings 42 are sleeved outside the size adjusting sleeve 40, wherein one thrust ball bearing 42 is positioned inside the retainer 30 and is attached to the inner wall of the retainer 30, the other thrust ball bearing 42 is positioned outside the retainer 30 and is attached to the outer wall of the retainer 30, and the two thrust ball bearings are used for enabling the rollers and the retainer to rotate so as to avoid generating large friction with the mandrel and the size adjusting sleeve; the size adjusting sleeve 40 is further provided with a linkage nut 43 and a linkage screw 44, the size adjusting sleeve 40 is in threaded connection with the linkage nut 43, and the linkage screw 44 penetrates through the linkage nut 43 and is fixedly connected with the size adjusting sleeve 40. When the diameter of the rolling cutter needs to be adjusted, the linkage nut 43 is rotated, the size adjusting sleeve 40 rotates simultaneously, the thrust ball bearings 42 positioned on the outer side of the retainer 30 abut against the linkage nut 43, the two thrust ball bearings 42 clamp the retainer rear cover 37, meanwhile, the end surface of the size adjusting sleeve 40 is provided with the annular step 41, the annular step 41 and the linkage nut 43 clamp the two thrust ball bearings 42, although the retainer 30 does not rotate along with the size adjusting sleeve 40, the retainer can move along the axial direction of the mandrel 10 along with the size adjusting sleeve 40, and therefore the diameter of the rolling cutter is adjusted.
Preferably, a locking nut 45 is arranged at the rear side of the linkage nut 43 and used for further locking the size adjusting sleeve 40, so that the size adjusting sleeve is prevented from falling off, and the diameter of the adjusted rolling cutter is ensured to be unchanged.
Meanwhile, because the retainer 30 and the two thrust ball bearings 42 are both arranged on the size adjusting sleeve 40, the size adjusting sleeve 40 is longer in length, the size adjusting sleeve 40 needs to rotate on the mandrel 10, in order to reduce the contact area and reduce friction and facilitate adjustment, a groove 46 is formed in the contact surface of the size adjusting sleeve 40 and the mandrel 10, only part of the inner wall of the size adjusting sleeve 40 is in contact with the mandrel 10, the front end of the inner wall of the size adjusting sleeve 40 is in contact with the mandrel 10, the rear end of the inner wall of the size adjusting sleeve 40 is in threaded connection with the mandrel 10, and the size adjusting sleeve 40 is convenient to install.
As shown in the attached drawings, a pin hole 14 is arranged on the small end part of the mandrel 10 and is detachably connected with the cutter bar through a pin shaft. After the rolling is finished, the pin shaft is taken down, the cutter bit is taken down, then the cutter bar is withdrawn from the workpiece, the contact between the cutter bit and the machined surface is avoided, the machined surface is scratched, and the machining precision is guaranteed.
In the embodiment, except for the standard part, the pressure taper sleeve 20, the roller 31, the front tip 32 and the rear tip 33, the other parts can be made of 7075-T6 aluminum alloy, so that the strength is ensured, the self weight is reduced, and the shaking in the machining process is reduced.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. The utility model provides an inner hole rolling press device, includes tool bit and cutter arbor, its characterized in that: the cutter head comprises a mandrel, a pressure taper sleeve, a retainer and a roller, the pressure taper sleeve is fixedly sleeved on the mandrel, the retainer is sleeved outside the mandrel, and the inner end surface of the roller is tightly abutted to the outer conical surface of the pressure taper sleeve; the roller is circumferentially arranged at one end of the retainer, a front tip and a rear tip are arranged on the retainer, the front tip abuts against the upper surface of the roller, and the rear tip abuts against the lower surface of the roller.
2. The bore rolling apparatus of claim 1, wherein: the sharp point of the front center is abutted against the upper surface of the roller; the sharp point of the rear center is abutted against the lower surface of the roller.
3. The bore rolling apparatus of claim 1, wherein: a plurality of roller grooves are circumferentially arranged at one end of the retainer, and the rollers are embedded in the roller grooves; the inner walls of the roller grooves, facing the upper surface and the lower surface of the roller, are respectively provided with a first limiting groove and a second limiting groove, the first limiting groove is internally provided with the front tip, and the second limiting groove is internally provided with the rear tip.
4. The bore rolling apparatus of claim 3, wherein: the retainer comprises a retainer front cover and a retainer rear cover, a notch is arranged on the retainer front cover, and the notch and the end face of the retainer rear cover form the roller groove.
5. The bore rolling device of claim 4, wherein: the retainer front cover and the retainer rear cover are fixedly connected by bolts.
6. The bore rolling apparatus of claim 1, wherein: the front end of the mandrel is provided with an annular boss, the pressure taper sleeve is positioned on the rear side of the annular boss, and the pressure taper sleeve is fixedly connected with the large end part of the mandrel through a nut and a shaft key.
7. The bore rolling device as claimed in any one of claims 1 to 6, wherein: the size adjusting sleeve is sleeved on the mandrel and is in threaded connection with the mandrel; the size adjusting sleeve is in linkage fit with the retainer and drives the retainer to move axially.
8. The bore rolling apparatus of claim 7, wherein: two thrust ball bearings are sleeved on the outer side of the size adjusting sleeve, one of the thrust ball bearings is located on the inner side of the retainer and attached to the inner wall of the retainer, and the other thrust ball bearing is located on the outer side of the retainer and attached to the outer wall of the retainer; the size adjusting sleeve is further provided with a linkage nut and a linkage screw, the size adjusting sleeve is in threaded connection with the linkage nut, and the linkage screw penetrates through the linkage nut and is fixedly connected with the size adjusting sleeve.
9. The bore rolling apparatus of claim 8, wherein: and a locking nut is arranged on the rear side of the linkage nut.
10. The bore rolling device as claimed in any one of claims 1 to 6, wherein: the small end part of the mandrel is provided with a pin hole which is detachably connected with the cutter bar through a pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921014659.7U CN210254940U (en) | 2019-07-02 | 2019-07-02 | Inner hole rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921014659.7U CN210254940U (en) | 2019-07-02 | 2019-07-02 | Inner hole rolling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210254940U true CN210254940U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921014659.7U Active CN210254940U (en) | 2019-07-02 | 2019-07-02 | Inner hole rolling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210254940U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475774A (en) * | 2020-11-10 | 2021-03-12 | 浙江工业大学 | Rolling cutter |
| CN113102952A (en) * | 2021-04-20 | 2021-07-13 | 四川易尚天交实业有限公司 | Machining tool for toothed adjusting sleeve assembly and machining method for toothed adjusting sleeve assembly |
-
2019
- 2019-07-02 CN CN201921014659.7U patent/CN210254940U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475774A (en) * | 2020-11-10 | 2021-03-12 | 浙江工业大学 | Rolling cutter |
| CN113102952A (en) * | 2021-04-20 | 2021-07-13 | 四川易尚天交实业有限公司 | Machining tool for toothed adjusting sleeve assembly and machining method for toothed adjusting sleeve assembly |
| CN113102952B (en) * | 2021-04-20 | 2022-07-15 | 四川易尚天交实业有限公司 | Machining tool and machining method for toothed adjusting sleeve assembly |
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