CN215968289U - Bolt part shot-blasting protection device - Google Patents
Bolt part shot-blasting protection device Download PDFInfo
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- CN215968289U CN215968289U CN202121771196.6U CN202121771196U CN215968289U CN 215968289 U CN215968289 U CN 215968289U CN 202121771196 U CN202121771196 U CN 202121771196U CN 215968289 U CN215968289 U CN 215968289U
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Abstract
The utility model relates to the technical field of tool design, in particular to a bolt part shot blasting protection device, which comprises a polish rod bolt part, wherein the polish rod bolt part sequentially comprises a bolt head, a transition section, a polish rod section and a thread section from top to bottom, and also comprises a plug, an adjusting sleeve and a protective sleeve, wherein internal threads are arranged in the protective sleeve and matched with the thread section of the polish rod bolt part, the adjusting sleeve is arranged outside the bolt head of the polish rod bolt part, internal threads are arranged on the upper part of the inner surface of the adjusting sleeve and matched with external threads of the plug, and the plug presses the bolt head of the polish rod bolt part tightly. The method prevents the thread part and the bolt head in the non-shot blasting area from being shot-blasted and strengthened, improves the processing efficiency, reduces the processing cost and improves the product quality.
Description
Technical Field
The utility model relates to the technical field of tool design, is used for shot peening strengthening processing of parts containing polished rod structures, and relates to a shot peening auxiliary installation tool and a non-shot peening part shielding protection device for polished rod bolt parts.
Background
Shot peening is that the surface layer is plastically deformed by utilizing the impact of shot flow moving at high speed on the metal surface, so that the metal structure of the surface layer is favorably changed, and a residual compressive stress field is introduced into the surface layer, thereby improving the fatigue resistance and the stress corrosion resistance of the metal part. Shot peening has been used for decades as a process for increasing the fatigue strength of metal parts and improving the mechanical properties of the surface of the workpiece. In the actual production process, shot blasting is generally prohibited on the bolt head and the threaded part of the bolt part, only shot blasting is needed on the polished rod part, so that the non-shot-blasted part needs to be shielded and protected, if the protection method is improper, the phenomenon that the boundary control between the threaded part and the region needing shot blasting is inaccurate is easily caused, the phenomenon that the bolt head is shot blasted is also easily caused, and the problems that the part is reworked or scrapped and the like are caused due to the out-of-range shot blasting.
In the shot blasting process, because shot flow moves at a high speed, the force impacting the metal surface of the part is large, and a region (a non-shot blasting region) which does not need shot blasting is also impacted by the shot flow, so that the boundary deviation between the shot blasting region and the non-shot blasting region needs to be strictly controlled (see item 6.2 of HB/Z26-2011 aviation part shot blasting strengthening process), and the protection measures of the non-shot blasting region need to be reliable so as to prevent the phenomena that the non-shot blasting is weakly shot blasting (receiving shot blasting with lower intensity) and out of range (or leaking shot blasting).
At present, a non-shot blasting area of a bolt is protected by adopting an adhesive tape mode, multiple layers of adhesive tapes are required to be wound on a thread part and a bolt head of the bolt in the protection mode, and the boundary of the non-shot blasting area is difficult to accurately position due to burrs on the edges of the adhesive tapes, so that the boundary deviation is easy to cause out-of-tolerance; in addition, the tape is very likely to fall off under the impact of the shot, and the phenomenon that the edge is damaged and shot is shot in the non-shot area is easily caused. The existing method for protecting the non-shot blasting area of the adhesive tape has poor reliability and can not be used repeatedly, and the processing efficiency and the product quality are seriously influenced.
In addition, bolt parts generally require high shot blasting strength, and the impact force of shot striking the surface of the part in the actual production process is high, so that a reliable mounting device is required for fixing, and the phenomenon of being sprayed away is prevented. The existing pressing plate type fixing mode has poor reliability and often has the phenomenon of 'spray flying'.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is as follows: the device can quickly clamp the bolt parts such as the light rods, can shield and protect non-shot blasting areas of the bolt parts, including the threaded parts, the bolt heads and the like, and can reliably fix the parts, prevents the threaded parts and the bolt heads in the non-shot blasting areas from being strengthened by shot blasting, improves the processing efficiency, reduces the processing cost and improves the product quality.
The technical scheme of the utility model is as follows:
the utility model provides a bolt class part shot-blasting protection device, includes polished rod class bolt class part, polished rod class bolt class part from the top down be bolt head, changeover portion, polished rod section and screw thread section in proper order, still include end cap, adjusting collar, protective sheath, the inside internal thread that is provided with of protective sheath, with the screw thread section cooperation of polished rod class bolt class part, the adjusting collar set up in the bolt head of polished rod class bolt class part outside, adjusting collar inner surface upper portion be provided with the internal thread, cooperate with the external screw thread of end cap, the end cap compress tightly the bolt head of polished rod class bolt class part.
Furthermore, protective sheath one end be provided with first internal thread hole, polished rod class bolt class part the screw thread section set up first internal thread hole in, the length in first internal thread hole is greater than polished rod class bolt class part the screw thread section length, can protect the screw thread section completely.
Further, the length of the first internal thread hole is 5-8 mm longer than the length of the thread section of the polished rod type bolt part.
Further, the other end of the protective sleeve is provided with a second internal thread hole, and the protective sleeve is fixedly connected with the shot blasting equipment workbench through the second internal thread hole.
Further, the plug comprises a threaded connection section and a pressing section, wherein an external thread is arranged on the outer side face of the threaded connection section, and the pressing section presses the bolt head of the polished rod bolt part.
Furthermore, a bayonet is arranged at the bottom of the adjusting sleeve, and the bayonet is in clearance fit with a polished rod section of a polished rod bolt part.
Furthermore, the thickness of the bayonet is smaller than the transition section of the polished rod bolt part, so that the bayonet can be completely clamped on the transition section of the polished rod bolt part.
Furthermore, the threaded connection section is flat and round, and a wrench is convenient to use for operation.
The utility model has the beneficial effects that: the utility model provides a shot blasting protection device for bolt parts, wherein a plug 1 is connected with an adjusting sleeve 2 through threads to form a seal, so that pills can be prevented from entering during production, and the shot blasting protection device can be suitable for polished rod bolt parts of different specifications by adjusting the degree of screwing the plug 1 into the adjusting sleeve 2 through threads; the diameter of the through hole at the bottom of the adjusting sleeve 2 is consistent with the diameter of the rod part of the bolt needing shot blasting, so that the shot can be prevented from entering; the screw thread of the polished rod bolt is screwed into the internal thread at one end of the protective sleeve 3, so that the boundary of the shot blasting area and the non-shot blasting area can be accurately positioned; the internal thread at the other end of the protective sleeve 3 is directly connected with the fixed screw on the shot blasting machine workbench, so that rapid clamping can be realized.
By using the device, the rapid clamping and positioning of the bolt parts of the optical rod can be realized, the precise protection of the non-shot blasting area of the bolt parts of the optical rod is realized, the boundary deviation of the non-shot blasting area is well controlled, the rework and the shot repairing process of the conventional adhesive tape protection method are omitted, the processing efficiency is improved, and the processing cost is reduced. On the other hand, the device is made of hard nylon, so that the damage to the bolt including the screw and the chamfer transition area can be prevented when the device is contacted with the part, and the phenomenon that the sticking on the surface of the part is difficult to clean in the conventional adhesive tape protection method is also avoided. The test proves that the processing efficiency is improved by more than 6 times, and the product percent of pass is improved by 70 percent.
In addition, polished rod bolt parts needing shot blasting are all made of high-strength steel metal materials, shot blasting media of cast steel shots are needed, the steel shots moving at high speed continuously impact the metal surface during shot blasting to enable the surface of the sprayed parts to accumulate heat, if a protection method made of metal materials is adopted, the heat of a protection device can be continuously increased to further damage the sprayed parts, and therefore the parts can be well protected by a hard nylon protection tool which does not transfer heat.
Drawings
FIG. 1 is a schematic view of a polished rod-like bolt part suitable for use in the present invention;
FIG. 2 is a schematic view of a clamping state of the polished rod bolt part device according to the present invention;
FIG. 3 is a perspective view of the polished rod type bolt part device in a clamping state;
FIG. 4 is a top view of the polished rod type bolt part device in a clamping state;
FIG. 5 is a cross-sectional view of a plug of the present invention;
FIG. 6 is a top view of the plug of the present invention;
FIG. 7 is a cross-sectional view of an adjustment sleeve of the present invention;
FIG. 8 is a top view of the adjustment sleeve of the present invention;
FIG. 9 is a schematic view of a protective cover of the present invention;
wherein, 1-plug; 2, adjusting the sleeve; 3, protecting the sleeve; 4-polished rod type bolt parts.
Detailed Description
The technical solution is further described in detail below with reference to the accompanying drawings and the detailed description.
Example 1:
the utility model provides a bolt class part peening protection device, includes polished rod class bolt class part, still includes end cap 1, adjusting collar 2, protective sheath 3, 3 inside internal threads that are provided with of protective sheath, with polished rod class bolt class part 1 screw thread section cooperation, adjusting collar 2 set up at polished rod class bolt class part 1 bolt head outside, 2 internal surface upper portions of adjusting collar be provided with the internal thread, cooperate with the external screw thread of end cap 1, end cap 1 compress tightly the bolt head of polished rod class bolt class part 1.
Further, 3 sections of protective sheath be provided with first internal thread hole, polished rod class bolt class part 1 the screw thread section set up first internal thread hole in, the length in first internal thread hole is greater than polished rod class bolt class part 1 the screw thread section length, can protect the screw thread section completely, preferred, the length in first internal thread hole is longer 5 ~ 8mm than polished rod class bolt class part 1 the screw thread section length, 3 other ends of protective sheath be provided with second internal thread hole, protective sheath 3 through second internal thread hole and peening equipment workstation fixed connection.
Further, end cap 1 includes threaded connection section and compresses tightly the section, threaded connection section lateral surface be provided with the external screw thread, the section that compresses tightly the bolt head of polished rod class bolt class part 1, the threaded connection section be flat circle form, be convenient for use the spanner to operate.
Further, the bottom of the adjusting sleeve 2 is provided with a bayonet which is in clearance fit with a polished rod section of the polished rod bolt part, and the thickness of the bayonet is slightly smaller than the transition section of the polished rod bolt part, so that the bayonet can be completely clamped on the transition section of the polished rod bolt part.
Example 2: the device comprises a plug 1, an adjusting sleeve 2 and a protective sleeve 3, wherein the plug 1 is in threaded connection with the adjusting sleeve 2, the protective sleeve 3 is in threaded connection with a part to be shot-blasted, and the protective sleeve 3 is in threaded connection with a workbench screw rod of the shot-blasting machine and is fixed, as shown in figures 2 and 3.
The diameter of the through hole at the bottom of the adjusting sleeve 2 is matched with the diameter of the rod part of the bolt to be shot-blasted, and is slightly larger than the diameter of the rod part of the bolt to be shot-blasted by 0.2-0.5 mm; the bottom thickness is consistent with the size of a transition area between a region (polished rod part) needing shot blasting and a bolt head of the polished rod type bolt part to be shot blasted; the inner diameter of the adjusting sleeve 2 is slightly larger than the head of the bolt needing shot blasting; the depth of the inner cavity of the adjusting sleeve 2 is 10-15 mm larger than the height of the head of the bolt needing shot blasting;
the two ends of the protective sleeve 3 are both provided with internal threads, the internal threads at one end are in matched connection with the threads of the polished rod bolt parts, and the internal threads at one end are in matched threaded connection with the screw rod of the shot blasting machine workbench.
During the use, will treat peening polished rod class bolt class part and penetrate adjusting collar 2 bottom hole, the bolt head is at adjusting collar 2 inner chamber, and end cap 1 can not rock until treating peening polished rod class bolt class part through screw thread screw in adjusting collar 2 in, and then covers non-peening district complete coverage with the threaded part of treating peening polished rod class bolt class part with protective sheath 3 through the internal thread screw in, and at last with the screw rod fastening connection on the peening machine workstation, can carry out peening production and processing.
The utility model has been described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the specific implementation in the above-described manner, and it is within the scope of the utility model to apply the inventive concept and solution to other applications without substantial modification.
Claims (8)
1. The utility model provides a bolt class part peening protection device, includes polished rod class bolt class part (4), polished rod class bolt class part (4) from the top down be bolt head, changeover portion, polished rod section and screw thread section, its characterized in that in proper order: still include end cap (1), adjusting collar (2), protective sheath (3) inside be provided with the internal thread, with the screw thread section cooperation of polished rod class bolt class part (4), adjusting collar (2) set up the bolt head outside at polished rod class bolt class part (4), adjusting collar (2) internal surface upper portion be provided with the internal thread, cooperate with the external screw thread of end cap (1), end cap (1) compress tightly the bolt head of polished rod class bolt class part (4).
2. The shot-peening protection device for bolt parts according to claim 1, wherein: protective sheath (3) one end be provided with first internal thread hole, polished rod class bolt class part (4) the screw thread section set up first internal thread hole in, the length in first internal thread hole is greater than the screw thread section length of polished rod class bolt class part (4), can protect the screw thread section completely.
3. The shot-peening protection device for bolt parts according to claim 2, wherein: the length of the first internal thread hole is 5-8 mm longer than the length of the thread section of the polished rod bolt part (4).
4. The shot-peening protection device for bolt parts according to claim 2, wherein: the other end of the protective sleeve (3) is provided with a second internal threaded hole, and the protective sleeve (3) is fixedly connected with a workbench of shot blasting equipment through the second internal threaded hole.
5. The shot-peening protection device for bolt parts according to claim 1, wherein: the plug (1) comprises a threaded connection section and a pressing section, wherein an external thread is arranged on the outer side face of the threaded connection section, and the pressing section presses the bolt head of the polished rod bolt part (4).
6. The shot-peening protection device for bolt parts according to claim 1, wherein: the bottom of the adjusting sleeve (2) is provided with a bayonet which is in clearance fit with the polished rod section of the polished rod bolt part (4).
7. The shot-peening protection device for bolt parts according to claim 6, wherein: the thickness of the bayonet is smaller than the transition section of the polished rod bolt part (4), so that the bayonet can be completely clamped on the transition section of the polished rod bolt part (4).
8. The shot-peening protection device for bolt parts according to claim 5, wherein: the threaded connection section is flat and round, and a wrench is convenient to use for operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771196.6U CN215968289U (en) | 2021-07-30 | 2021-07-30 | Bolt part shot-blasting protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771196.6U CN215968289U (en) | 2021-07-30 | 2021-07-30 | Bolt part shot-blasting protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215968289U true CN215968289U (en) | 2022-03-08 |
Family
ID=80515526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121771196.6U Active CN215968289U (en) | 2021-07-30 | 2021-07-30 | Bolt part shot-blasting protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215968289U (en) |
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2021
- 2021-07-30 CN CN202121771196.6U patent/CN215968289U/en active Active
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