CN113305504B - Machining method of thin-wall short shaft sleeve - Google Patents
Machining method of thin-wall short shaft sleeve Download PDFInfo
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- CN113305504B CN113305504B CN202110473419.9A CN202110473419A CN113305504B CN 113305504 B CN113305504 B CN 113305504B CN 202110473419 A CN202110473419 A CN 202110473419A CN 113305504 B CN113305504 B CN 113305504B
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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
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
Abstract
The invention discloses a method for processing a thin-wall short shaft sleeve, which comprises the steps of blanking, inner hole turning, outer circle turning, end face turning, inner hole boring and workpiece polishing. The thin-wall short shaft sleeve is simple in processing method and high in processing efficiency, the rejection rate is reduced, and the generation cost is reduced; the work piece supports with the cyclic annular step of centre gripping frock and leans on the back, carries out the centre gripping through the dead weight of arc briquetting, the holding power of arc backing block group and first baffle, second baffle to the axial pressure of work piece and fixes, reduces thin wall shaft sleeve's processing deformation.
Description
Technical Field
The invention relates to the technical field of shaft sleeve processing, in particular to a processing method of a thin-wall short shaft sleeve.
Background
The shaft sleeve is a cylindrical mechanical part sleeved on a shaft and is a component of a bearing, and the shaft sleeve mainly plays the roles of guiding, limiting, positioning, reducing shaft abrasion and the like. In the processing process, the shaft sleeve needs to be centrally perforated according to the function of the shaft sleeve in equipment, so that the shaft sleeve can be sleeved on the rotating shaft.
The method is characterized in that the thin-wall short shaft sleeve is difficult to process in the process of manufacturing ships, and the thin-wall short shaft sleeve is short in size, so that the size precision and form and position tolerance do not reach the standard in the processing process; in addition, the shaft sleeve needs to be fixed in the processing process, when the shaft sleeve is clamped by a positioning means in the existing processing technology, inward extrusion is generated on the wall of the shaft sleeve, and the shaft sleeve deforms if the force of the extrusion is too large due to the small thickness of the shaft sleeve; if the clamping pressure is too low, the clamping is unstable, and the workpiece is deviated during processing, so that the production efficiency is greatly limited, and the production cost is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the method for processing the thin-wall short shaft sleeve, which has the advantages of simplicity, high processing efficiency, reduced rejection rate and reduced generation cost.
In order to achieve the purpose, the technical scheme of the invention is to design a processing method of a thin-wall short shaft sleeve, which comprises the following steps:
s1: blanking, selecting round steel according to the required size and material, and cutting the round steel into sections according to the size requirement to be used as workpieces for later use;
s2: turning an inner hole, an outer circle and end faces, fixing a workpiece on a lathe, roughly machining the inner hole of the workpiece, reserving machining allowance of 1mm for the inner hole, then turning the outer circle to form a step of 15mm on the outer side of the workpiece, and then turning the two end faces of the workpiece flat to enable the length of the workpiece to reach the length required by a drawing;
s3: boring an inner hole, fixing a workpiece through a clamping tool, and respectively processing the inner hole of the shaft sleeve and the chamfer of the end face of the workpiece by adopting a boring machine;
s4: polishing the workpiece by using a polishing device to obtain a finished thin-wall short shaft sleeve, wherein the length of the thin-wall short shaft sleeve is 290-300mm, the wall thickness is 19-20mm, and the diameter of an inner hole is 540-550 mm;
the clamping tool comprises an L-shaped fixing plate frame which is vertically arranged, a fixing flange is arranged on the surface of a side plate of the fixing plate frame, a flange plate of the fixing flange is connected with the side plate through a bolt, and an annular step used for abutting against the end part of a workpiece is arranged on the inner wall of a pipe section of the fixing flange; the upper surface of the bottom plate of the fixing plate frame is provided with an arc cushion block group matched with the excircle of the workpiece; a pressing plate is arranged above the fixing plate frame, the pressing plate is connected with a side plate of the fixing plate frame in a sliding mode along the vertical direction, and an arc-shaped pressing block group matched with the excircle of the workpiece is arranged on the lower surface of the pressing plate;
the arc cushion block group comprises a base, an arc cushion block is connected to the upper portion of the base in a lifting mode through a hydraulic rod, a first baffle used for abutting against a workpiece is arranged on the side face of the arc cushion block, and the arc cushion block is connected with a side plate through bolts; the arc-shaped pressing block group comprises an arc-shaped pressing block, a second baffle used for abutting against a workpiece is arranged on the side face of the arc-shaped pressing block, the arc-shaped pressing block group is connected with the pressing plate in a sliding mode, and the arc-shaped pressing block group is connected with the side plate through bolts. The work piece supports with the cyclic annular step of centre gripping frock and leans on the back, carries out the centre gripping through the dead weight of arc briquetting, the holding power of arc backing block group and first baffle, second baffle to the axial pressure of work piece and fixes, reduces thin wall shaft sleeve's processing deformation.
In order to enable the end face of the workpiece not to be affected during chamfering, the preferred technical scheme is that the inner diameter of the pipe section of the fixed flange is larger than that of the shaft sleeve, and the annular step is in clearance fit with the outer circle of the shaft sleeve. The inner diameter of the pipe section is larger than that of the shaft sleeve, so that the annular step cannot be damaged when the end part of the workpiece is chamfered, and the tool is prevented from being damaged.
In order to facilitate the centering of the pipe section of the fixed flange and the inner hole of the workpiece, a further preferable technical scheme is that a through hole coaxial with the fixed flange is arranged on the side plate, a bearing is arranged in the through hole, a screw rod penetrates through the bearing, and a dial indicator component used for centering the inner hole of the workpiece is arranged at the end part of the screw rod. The setting is coaxial and pivoted screw rod with mounting flange, and the screw rod rotates and drives the percentage table subassembly and rotate, can be quick carry out the centering to the hole and the pipeline section of work piece.
In order to more accurately center the pipe section and the workpiece, a further preferable technical scheme is that a flange plate of the fixed flange is rotatably connected with the pipe section of the fixed flange, a first support rod is sleeved on a screw section between the dial indicator component and the side plate and is in threaded connection with the screw, the length of the first support rod is smaller than the inner diameter of the pipe section, blind holes are axially formed in two ends of the first support rod, a first telescopic rod and a second telescopic rod are respectively arranged in the blind holes, and the sum of the lengths of the first support rod, the first telescopic rod and the second telescopic rod is larger than the inner diameter of the pipe section; the ends of the first telescopic rod and the second telescopic rod, which are far away from the first supporting rod, are respectively provided with a magnetic suction block matched with the inner wall of the pipe section; the dial indicator component comprises a fixing ring in threaded connection with the screw, the outer wall of the fixing ring is provided with a connecting rod, the connecting rod is parallel to the screw, two dial indicators are vertically arranged on the connecting rod, a measuring rod close to a first dial indicator of the fixing ring is abutted against the inner wall of a pipe section of the fixing flange, and a measuring rod close to a second dial indicator of the workpiece is abutted against the inner wall of the workpiece. The tip of first telescopic link, second telescopic link sets up magnetism and inhales the piece, and magnetism is inhaled the piece and is adsorbed with the inner wall magnetism of pipeline section and be connected fixedly, and when rotating the screw rod, the screw rod drives first bracing piece and rotates to drive pipeline section and first percentage table, the second percentage table rotates, measures and compares the hole of pipeline section inner wall and work piece respectively through first percentage table and second percentage table, can carry out more accurate measurement and centering to the inner circle of work piece and the inner wall of pipeline section.
According to a further preferred technical scheme, sleeves of the measuring rods of the first dial indicator and the second dial indicator are connected with the connecting rod in a buckling mode.
A further preferred technical scheme is that one end of the screw rod, which is close to the side plate, is provided with a handle.
The method comprises the following steps that a workpiece is placed on an arc-shaped cushion block, a hydraulic adjusting rod is adjusted to lift the arc-shaped cushion block to push the workpiece to ascend, one end, far away from a step, of the workpiece is aligned with an annular step of a fixed flange pipe section, the workpiece is pushed axially to be abutted against the annular step, a sliding pressure plate drives an arc-shaped pressing block to abut against the outer wall above the workpiece, and the pressure plate is locked at the position of a side plate; then connecting a measuring rod sleeve of the dial indicator with the connecting rod to enable a measuring rod of the dial indicator to be abutted against the inner wall of the workpiece; and finally, the inner wall of the workpiece is measured by the dial indicator and the workpiece and the pipe sections of the fixed flange are centered and fixed by matching with the lifting of the arc cushion block and the arc pressing block.
The invention has the advantages and beneficial effects that: the thin-wall short shaft sleeve is simple in processing method and high in processing efficiency, and the rejection rate and the production cost are reduced. After the workpiece is abutted against the annular step, the workpiece is clamped and fixed through the dead weight of the arc-shaped pressing block group, the supporting force of the arc-shaped cushion block group, the axial pressure of the first baffle and the second baffle, and the processing deformation of the thin-wall shaft sleeve is reduced; the inner diameter of the pipe section is larger than that of the shaft sleeve, so that the annular step cannot be damaged when the end part of the workpiece is chamfered, and the tool is prevented from being damaged; the screw rod which is coaxial with the fixed flange and rotates is arranged, the screw rod rotates to drive the dial indicator assembly to rotate, and the inner hole and the pipe section of the workpiece can be quickly centered; the tip of first telescopic link, second telescopic link sets up magnetism and inhales the piece, and magnetism is inhaled the piece and is adsorbed with the inner wall magnetism of pipeline section and be connected fixedly, and when rotating the screw rod, the screw rod drives first bracing piece and rotates to drive pipeline section and first percentage table, the second percentage table rotates, measures and compares the hole of pipeline section inner wall and work piece respectively through first percentage table and second percentage table, can carry out more accurate measurement and centering to the inner circle of work piece and the inner wall of pipeline section.
Drawings
Fig. 1 is a schematic structural view of a clamping tool for processing a thin-wall short shaft sleeve.
In the figure: 1. a workpiece; 2. fixing the plate frame; 3. a fixed flange; 4. an annular step; 5. pressing a plate; 6. a base; 7. an arc-shaped cushion block; 8. a first baffle plate; 9. an arc-shaped pressing block; 10. a second baffle; 11. a screw; 12. a first support bar; 13. a first telescopic rod; 14. a second telescopic rod; 15. a magnetic block; 16. a fixing ring; 17. a connecting rod; 18. a first percentile table; 19. and a second dial indicator.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the invention relates to a method for processing a thin-wall short shaft sleeve, which comprises the following steps:
s1: blanking, selecting round steel according to the required size and material, and cutting the round steel into sections according to the size requirement to be used as a workpiece 1 for later use;
s2: turning an inner hole, an outer circle and end faces, fixing a workpiece on a lathe, roughly machining the inner hole of the workpiece, reserving machining allowance of 1mm for the inner hole, then turning the outer circle to form a step of 15mm on the outer side of the workpiece, and then turning the two end faces of the workpiece flat to enable the length of the workpiece to reach the length required by a drawing;
s3: boring an inner hole, fixing a workpiece through a clamping tool, and respectively processing the inner hole of the shaft sleeve and the chamfer of the end face of the workpiece by adopting a boring machine;
s4: polishing the workpiece by using a polishing device to obtain a finished thin-wall short shaft sleeve, wherein the length of the thin-wall short shaft sleeve is 290-300mm, the wall thickness is 19-20mm, and the diameter of an inner hole is 540-550 mm;
the clamping tool comprises an L-shaped fixing plate frame 2 which is vertically arranged, a fixing flange 3 is arranged on the surface of a side plate of the fixing plate frame, a flange plate of the fixing flange is connected with the side plate through a bolt, and an annular step 4 used for abutting against the end part of a workpiece is arranged on the inner wall of a pipe section of the fixing flange; the upper surface of the bottom plate of the fixing plate frame is provided with an arc cushion block group matched with the excircle of the workpiece; a pressing plate 5 is arranged above the fixing plate frame, the pressing plate is connected with a side plate of the fixing plate frame in a sliding mode along the vertical direction, and an arc-shaped pressing block group matched with the excircle of the workpiece is arranged on the lower surface of the pressing plate;
the arc cushion block group comprises a base 6, an arc cushion block 7 is connected above the base in a lifting mode through a hydraulic rod, a first baffle 8 used for abutting against a workpiece is arranged on the side face of the arc cushion block, and the arc cushion block is connected with a side plate through bolts; the arc-shaped pressing block group comprises an arc-shaped pressing block 9, a second baffle 10 used for abutting against a workpiece is arranged on the side face of the arc-shaped pressing block, the arc-shaped pressing block group is connected with the pressing plate in a sliding mode, and the arc-shaped pressing block group is connected with the side plate through bolts
The inner diameter of the pipe section of the fixed flange is larger than that of the shaft sleeve, and the annular step is in clearance fit with the outer circle of the shaft sleeve.
The side plate is provided with a through hole coaxial with the fixed flange, a bearing is arranged in the through hole, a screw rod 11 penetrates through the bearing, and the end part of the screw rod is provided with a dial indicator assembly used for centering an inner hole of a workpiece.
The flange plate of the fixed flange is rotatably connected with the pipe section of the fixed flange, a first support rod 12 is sleeved on the screw section between the dial indicator assembly and the side plate, the first support rod is in threaded connection with the screw 11, the length of the first support rod is smaller than the inner diameter of the pipe section, blind holes are axially formed in two ends of the first support rod, a first telescopic rod 13 and a second telescopic rod 14 are respectively arranged in the blind holes, and the sum of the lengths of the first support rod, the first telescopic rod and the second telescopic rod is larger than the inner diameter of the pipe section; the ends of the first telescopic rod and the second telescopic rod, which are far away from the first supporting rod, are respectively provided with a magnetic suction block 15 matched with the inner wall of the pipe section; the dial indicator component comprises a fixing ring 16 in threaded connection with the screw, a connecting rod 17 is arranged on the outer wall of the fixing ring, the connecting rod is parallel to the screw, two dial indicators are vertically arranged on the connecting rod, a measuring rod of a first dial indicator 18 close to the fixing ring is abutted to the inner wall of the pipe section of the fixing flange, and a measuring rod of a second dial indicator 19 close to the workpiece is abutted to the inner wall of the workpiece.
The sleeve of the measuring rod of the first dial indicator and the sleeve of the measuring rod of the second dial indicator are connected with the connecting rod in a buckling mode. And a handle is arranged at one end of the screw rod close to the side plate.
The step of fixing the workpiece and the clamping tool is specifically that firstly, the workpiece is placed on an arc cushion block, a hydraulic pressure rod is adjusted to lift the arc cushion block to push the workpiece to ascend, one end, away from a step, of the workpiece is aligned with an annular step of a fixed flange pipe section, the workpiece is pushed axially to abut against the annular step, a sliding pressure plate drives an arc-shaped pressure block to abut against the outer wall above the workpiece, and the pressure plate is locked at the position of a side plate; then connecting a measuring rod sleeve of the dial indicator with the connecting rod to enable a measuring rod of the dial indicator to be abutted against the inner wall of the workpiece; and finally, the inner wall of the workpiece is measured by the dial indicator and the workpiece and the pipe sections of the fixed flange are centered and fixed by matching with the lifting of the arc cushion block and the arc pressing block.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The processing method of the thin-wall short shaft sleeve is characterized by comprising the following steps:
s1: blanking, selecting round steel according to the required size and material, and cutting the round steel into sections according to the size requirement to be used as workpieces for later use;
s2: turning an inner hole, an outer circle and end faces, fixing a workpiece on a lathe, roughly machining the inner hole of the workpiece, reserving machining allowance of 1mm for the inner hole, then turning the outer circle to form a step of 15mm on the outer side of the workpiece, and then turning the two end faces of the workpiece flat to enable the length of the workpiece to reach the length required by a drawing;
s3: boring an inner hole, fixing a workpiece through a clamping tool, and respectively processing the inner hole of the shaft sleeve and the chamfer of the end face of the workpiece by adopting a boring machine;
s4: polishing the workpiece by using a polishing device to obtain a finished thin-wall short shaft sleeve, wherein the length of the thin-wall short shaft sleeve is 290-300mm, the wall thickness is 19-20mm, and the diameter of an inner hole is 540-550 mm;
the clamping tool comprises an L-shaped fixing plate frame which is vertically arranged, a fixing flange is arranged on the surface of a side plate of the fixing plate frame, a flange plate of the fixing flange is connected with the side plate through a bolt, and an annular step used for abutting against the end part of a workpiece is arranged on the inner wall of a pipe section of the fixing flange; the upper surface of the bottom plate of the fixing plate frame is provided with an arc cushion block group matched with the excircle of the workpiece; a pressing plate is arranged above the fixing plate frame, the pressing plate is connected with a side plate of the fixing plate frame in a sliding mode along the vertical direction, and an arc-shaped pressing block group matched with the excircle of the workpiece is arranged on the lower surface of the pressing plate;
the arc cushion block group comprises a base, an arc cushion block is connected to the upper portion of the base in a lifting mode through a hydraulic rod, a first baffle used for abutting against a workpiece is arranged on the side face of the arc cushion block, and the arc cushion block is connected with a side plate through bolts; the arc pressing block group comprises an arc pressing block, a second baffle used for abutting against a workpiece is arranged on the side face of the arc pressing block, the arc pressing block group is connected with the pressing plate in a sliding mode, and the arc pressing block group is connected with the side plate through bolts; the inner diameter of the pipe section of the fixed flange is larger than that of the shaft sleeve, and the annular step is in clearance fit with the outer circle of the shaft sleeve; the side plate is provided with a through hole coaxial with the fixed flange, a bearing is arranged in the through hole, a screw rod penetrates through the bearing, and the end part of the screw rod is provided with a dial indicator assembly for centering an inner hole of a workpiece;
the flange plate of the fixed flange is rotatably connected with the pipe section of the fixed flange, a first supporting rod is sleeved on the screw section between the dial indicator assembly and the side plate and is in threaded connection with the screw, the length of the first supporting rod is smaller than the inner diameter of the pipe section, blind holes are axially formed in two ends of the first supporting rod, a first telescopic rod and a second telescopic rod are respectively arranged in the blind holes, and the sum of the lengths of the first supporting rod, the first telescopic rod and the second telescopic rod is larger than the inner diameter of the pipe section; the ends of the first telescopic rod and the second telescopic rod, which are far away from the first supporting rod, are respectively provided with a magnetic suction block matched with the inner wall of the pipe section; the dial indicator component comprises a fixing ring in threaded connection with the screw, the outer wall of the fixing ring is provided with a connecting rod, the connecting rod is parallel to the screw, two dial indicators are vertically arranged on the connecting rod, a measuring rod close to a first dial indicator of the fixing ring is abutted against the inner wall of a pipe section of the fixing flange, and a measuring rod close to a second dial indicator of the workpiece is abutted against the inner wall of the workpiece.
2. The method for machining the thin-wall short shaft sleeve as claimed in claim 1, wherein the sleeves of the measuring rods of the first dial indicator and the second dial indicator are connected with the connecting rod in a buckling mode.
3. The method for processing the thin-wall short shaft sleeve as claimed in claim 2, wherein a handle is arranged at one end of the screw rod close to the side plate.
4. The method for processing the thin-wall short shaft sleeve according to claim 3, wherein the step of fixing the workpiece and the clamping tool is specifically that the workpiece is firstly placed on the arc-shaped cushion block, the hydraulic pressure rod is adjusted to lift the arc-shaped cushion block to push the workpiece to ascend, one end of the workpiece far away from the step is aligned with the annular step of the fixed flange pipe section, the workpiece is pushed to abut against the annular step in the axial direction, the sliding pressure plate drives the arc-shaped pressure block to abut against the outer wall above the workpiece, and the pressure plate is locked at the position of the side plate; then connecting a measuring rod sleeve of the dial indicator with the connecting rod to enable a measuring rod of the dial indicator to be abutted against the inner wall of the workpiece; and finally, the inner wall of the workpiece is measured by the dial indicator and the workpiece and the pipe sections of the fixed flange are centered and fixed by matching with the lifting of the arc cushion block and the arc pressing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473419.9A CN113305504B (en) | 2021-04-29 | 2021-04-29 | Machining method of thin-wall short shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473419.9A CN113305504B (en) | 2021-04-29 | 2021-04-29 | Machining method of thin-wall short shaft sleeve |
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| CN113305504A CN113305504A (en) | 2021-08-27 |
| CN113305504B true CN113305504B (en) | 2022-04-19 |
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| CN202110473419.9A Active CN113305504B (en) | 2021-04-29 | 2021-04-29 | Machining method of thin-wall short shaft sleeve |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114273872B (en) * | 2021-12-28 | 2024-01-23 | 张家港市弘扬金属制品制造有限公司 | Machining method of thin-wall bearing ring forging |
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| JP2007168010A (en) * | 2005-12-21 | 2007-07-05 | Bridgestone Flowtech Corp | Clamping device |
| CN102357773A (en) * | 2011-09-16 | 2012-02-22 | 贵州航太精密制造有限公司 | Processing method for preventing bar-shaped thin-wall part from deforming |
| CN104959850A (en) * | 2015-06-17 | 2015-10-07 | 苏州华冲精密机械有限公司 | Clamp used for machining thin-wall sleeve type part |
| CN105090247A (en) * | 2015-08-24 | 2015-11-25 | 重庆市璧山区四通机械厂 | Thin-wall shaft sleeve machining method |
| CN207272793U (en) * | 2017-09-02 | 2018-04-27 | 无锡市源通轴承有限公司 | A kind of thin wall type fixture |
| CN208992235U (en) * | 2018-11-23 | 2019-06-18 | 哈尔滨职业技术学院 | The special fixture of thin-walled parts processing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710392A (en) * | 2014-12-04 | 2016-06-29 | 苏州道森阀门有限公司 | Machining process for annular thin-wall part and tool thereof |
| CN105382692B (en) * | 2015-12-15 | 2017-10-20 | 广东工业大学 | A kind of U-shaped thin-walled revolving meber is quickly felt relieved positioning clamping device |
| CN108799333B (en) * | 2018-06-25 | 2019-12-06 | 宁波奥辰机械科技有限公司 | manufacturing method of thin-wall wear-resistant shaft sleeve |
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2021
- 2021-04-29 CN CN202110473419.9A patent/CN113305504B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007168010A (en) * | 2005-12-21 | 2007-07-05 | Bridgestone Flowtech Corp | Clamping device |
| CN102357773A (en) * | 2011-09-16 | 2012-02-22 | 贵州航太精密制造有限公司 | Processing method for preventing bar-shaped thin-wall part from deforming |
| CN104959850A (en) * | 2015-06-17 | 2015-10-07 | 苏州华冲精密机械有限公司 | Clamp used for machining thin-wall sleeve type part |
| CN105090247A (en) * | 2015-08-24 | 2015-11-25 | 重庆市璧山区四通机械厂 | Thin-wall shaft sleeve machining method |
| CN207272793U (en) * | 2017-09-02 | 2018-04-27 | 无锡市源通轴承有限公司 | A kind of thin wall type fixture |
| CN208992235U (en) * | 2018-11-23 | 2019-06-18 | 哈尔滨职业技术学院 | The special fixture of thin-walled parts processing |
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