CN215560513U - Precise spline shaft correcting device - Google Patents
Precise spline shaft correcting device Download PDFInfo
- Publication number
- CN215560513U CN215560513U CN202121392186.1U CN202121392186U CN215560513U CN 215560513 U CN215560513 U CN 215560513U CN 202121392186 U CN202121392186 U CN 202121392186U CN 215560513 U CN215560513 U CN 215560513U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- inner hole
- hole
- spline shaft
- correcting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Forging (AREA)
Abstract
A precise spline shaft correcting device comprises a fixed seat, a square sleeve, a workpiece positioning and clamping mechanism and a correcting executing mechanism; the fixed seat is a cylindrical sleeve, a square sleeve is assembled in the middle of an inner hole of the sleeve, the two ends of the inner hole of the sleeve are provided with workpiece positioning and clamping mechanisms, and the side wall of the sleeve is provided with a plurality of groups of radial threaded holes communicated with the inner hole of the sleeve; the inner hole of the square sleeve is a round hole, and a plurality of groups of stepped holes corresponding to the radial threaded holes in the side wall of the fixed seat are arranged on the side wall of the square sleeve; the correcting execution mechanism comprises a correcting bolt and a pressing sleeve, the correcting bolt is a hollow bolt, the correcting bolt is installed in a radial threaded hole in the side wall of the fixing seat, the pressing sleeve is of a stepped sleeve structure and is installed in a stepped hole of the square sleeve, and the central axis of an inner hole of the pressing sleeve coincides with the central axis of the correcting bolt. The utility model realizes the nondestructive correction operation of the precise spline shaft and avoids the adverse effect of the correction process on the performance and the dimensional precision of parts.
Description
Technical Field
The utility model relates to a shaft part correcting device, in particular to a shaft part correcting device designed for ensuring that the outer cylindrical surface of a precise spline shaft meets the requirements of coaxiality and circular run-out tolerance.
Background
As shown in fig. 1, in order to ensure that the coaxiality and the circular runout tolerance of the outer cylindrical surfaces of the first shaft section 1-1 and the second shaft section 1-2 in the precise spline shaft 1 meet the related technical requirements, the precise spline shaft 1 is usually required to be corrected when the precise spline shaft 1 part with a stepped shaft structure is overhauled.
Aiming at the correction problem of the precision spline shaft 1 part in the attached drawing 1, in order to ensure the stability of the metallographic structure in the part and avoid the adverse effect of the correction process on the performance of the part, a method combining mechanical adjustment and annealing treatment is generally adopted, and the influence on the dimensional precision of the precision spline shaft 1 part needs to be considered in an important way when the mechanical adjustment is carried out, particularly, because the groove 1-3 structure shown in the attached drawing 2 is arranged on the precision spline shaft 1, if a conventional shaft part correction tool is adopted, the nondestructive correction operation of the precision spline shaft 1 is difficult to realize, and therefore, the optimal design of a special precision spline shaft correction device is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model provides a precision spline shaft correcting device, which aims to realize nondestructive correction operation on a precision spline shaft, avoid adverse effects on the performance and the dimensional precision of parts caused by a correction process and fulfill the aim of meeting the requirements on the coaxiality and the circular run-out tolerance of the outer cylindrical surface of the precision spline shaft.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a precise spline shaft correcting device comprises a fixed seat, a square sleeve, a workpiece positioning and clamping mechanism and a correcting executing mechanism; the fixed seat is a cylindrical sleeve, an inner hole of the sleeve is a variable cross-section through hole, a square sleeve is assembled in the middle of the inner hole of the sleeve, workpiece positioning and clamping mechanisms are assembled at two ends of the inner hole of the sleeve, and a plurality of groups of radial threaded holes communicated with the inner hole of the sleeve are arranged on the side wall of the sleeve; the inner hole of the square sleeve is a round hole, and a plurality of groups of stepped holes corresponding to the radial threaded holes in the side wall of the fixed seat are arranged on the side wall of the square sleeve; the correcting execution mechanism comprises a correcting bolt and a pressing sleeve, the correcting bolt is a hollow bolt, the correcting bolt is installed in a radial threaded hole in the side wall of the fixing seat, the pressing sleeve is of a stepped sleeve structure and is installed in a stepped hole of the square sleeve, and the central axis of an inner hole of the pressing sleeve coincides with the central axis of the correcting bolt.
The precision spline shaft correcting device is also provided with a measuring rod, the measuring rod can penetrate through a central through hole of the correcting bolt and an inner hole of the pressing sleeve, and the tail end of the measuring rod is contacted with the outer cylindrical surface of the first shaft section or the second shaft section of the corrected precision spline shaft.
The precision spline shaft correcting device is also provided with a cushion block, and the cushion block is embedded in the groove of the corrected precision spline shaft.
In the precise spline shaft correcting device, a first internal thread and a second internal thread are respectively arranged at two ends of an inner hole of the fixed seat; in the sleeve inner hole of the fixed seat, a hole section adjacent to the first internal thread is a first conical hole, and a hole section adjacent to the second internal thread is a second conical hole.
In the precision spline shaft correcting device, the workpiece positioning and clamping mechanism comprises a first clamping sleeve and a first locking sleeve which are matched with one end of the precision spline shaft to be measured, and also comprises a second clamping sleeve and a second locking sleeve which are matched with the other end of the precision spline shaft to be measured; the outer surface of the first clamping sleeve is a conical surface matched with a first conical hole in an inner hole of a sleeve of the fixed seat, and a first notch communicated with the inner hole is formed in the side wall of the first clamping sleeve; the outer surface of the second clamping sleeve is a conical surface matched with a second conical hole in the inner hole of the sleeve of the fixed seat, and a second notch communicated with the inner hole is formed in the side wall of the second clamping sleeve; the first locking sleeve is provided with an external thread matched with the first internal thread in the sleeve inner hole of the fixed seat; and the second locking sleeve is provided with an external thread matched with the second internal thread in the sleeve inner hole of the fixing seat.
According to the precise spline shaft correcting device, each group of radial threaded holes in the side wall of the fixing seat comprises four radial threaded holes which are uniformly distributed along the circumferential direction.
According to the precise spline shaft correcting device, the square flanges are arranged at the two ends of the fixing seat, and the fixing seat can be stably placed in the annealing furnace through the square flanges.
The utility model relates to a precise spline shaft correcting device, which can realize the positioning and assembly of a square sleeve by matching a sleeve inner hole, a radial threaded hole, a pressing sleeve and a correcting bolt of a fixed seat, after a precise spline shaft to be corrected is arranged in the square sleeve inner hole, the two ends of a workpiece are clamped and fixed by a workpiece positioning and clamping mechanism, then the size of the correction point is measured by matching the measuring rod and the measuring instrument, the screwing-in depth of the correction bolt is adjusted according to the measuring structure, the correction bolt applies pressure to the precise spline shaft to be corrected to generate plastic deformation, the size of the correction point is measured by matching the measuring rod and the measuring instrument, and after the size of the correction point is determined to meet the standard requirement, the precise spline shaft correction device is put into an annealing furnace for heat treatment, therefore, the coaxiality and the circle run-out tolerance of the corrected outer cylindrical surface of the precise spline shaft are ensured to be in a stable state. Therefore, the utility model realizes the nondestructive correction operation of the precise spline shaft, avoids the adverse effects on the performance and the dimensional precision of parts in the correction process, and ensures the overhaul quality of the precise spline shaft workpiece.
Drawings
FIG. 1 is a schematic diagram of a precision spline shaft structure and its outer cylindrical surface coaxiality and circle run-out tolerance requirements;
FIG. 2 is a schematic view of the cross-sectional structure M-M of FIG. 1;
FIG. 3 is a schematic view of the structure of the present invention and its relationship with the precision spline shaft;
FIG. 4 is a schematic view of the cross-sectional structure of N-N in FIG. 3;
FIG. 5 is a schematic cross-sectional view of the first clamping sleeve;
FIG. 6 is a side view of FIG. 5;
FIG. 7 is a sectional view of the fixing base;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a schematic cross-sectional view of a square sleeve;
FIG. 10 is a schematic view of the cross-sectional structure I-I of FIG. 9;
FIG. 11 is a cross-sectional view of the second clamping sleeve;
fig. 12 is a side view of fig. 11.
The list of labels in the figure is:
1. the precise spline shaft comprises 1-1 parts of a precise spline shaft, 1-2 parts of a first shaft section, 1-3 parts of a second shaft section and a groove;
2. a first locking collar;
3. 3-1 parts of a first clamping sleeve and a first notch;
4. the device comprises a fixed seat, 4-1 parts of a sleeve inner hole, 4-1-1 parts of a first internal thread, 4-1-2 parts of a first conical hole, 4-1-3 parts of a second internal thread, 4-1-4 parts of a second conical hole, 4-2 parts of a radial threaded hole, 4-3 parts of a square flange;
5. correcting the bolt;
6. a measuring rod;
7. cushion blocks;
8. pressing the sleeve;
9. a square sleeve 9-1 and a stepped hole;
10. a second clamping sleeve 10-1 and a second notch;
11. and a second locking sleeve.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
Referring to fig. 1 and 2, a precision spline shaft 1 part with a stepped shaft structure needs to ensure the coaxiality and the circular run-out tolerance of the outer cylindrical surfaces of a first shaft section 1-1 and a second shaft section 1-2 in the precision spline shaft 1 when the precision spline shaft 1 part is overhauled according to the related technical requirements, and a groove 1-3 structure shown in fig. 2 is further arranged on the precision spline shaft 1. In the maintenance process, in order to ensure the coaxiality and the circular runout tolerance of the outer cylindrical surfaces of the first shaft section 1-1 and the second shaft section 1-2 in the precision spline shaft 1, the parts of the precision spline shaft 1 need to be corrected. The calibration work generally adopts a method of combining mechanical adjustment and annealing treatment, and the influence on the dimensional accuracy of the precision spline shaft 1 part needs to be considered when the mechanical adjustment is carried out.
Referring to fig. 3 and 4, the utility model provides a correcting device suitable for the precise spline shaft 1 shown in fig. 1, which comprises a fixed seat 4, a square sleeve 9, a workpiece positioning and clamping mechanism, a correcting execution mechanism and a measuring rod 6; the fixed seat 4 is a cylindrical sleeve, a square sleeve 9 is sleeved in a sleeve inner hole 4-1 of the fixed seat 4, the corrected precision spline shaft 1 is sleeved in the square sleeve 9, a cushion block 7 is embedded in a groove 1-3 of the corrected precision spline shaft 1, and workpiece positioning and clamping mechanisms are assembled at two ends of the sleeve inner hole 4-1 of the fixed seat 4; the correcting executing mechanism comprises a correcting bolt 5 and a pressing sleeve 8, wherein the correcting bolt 5 is a hollow bolt and is assembled with the side wall of the fixed seat 4, the pressing sleeve 8 is assembled with the side wall of the square sleeve 9, the pressing sleeve 8 corresponds to the correcting bolt 5 in position, and the central axis of the inner hole of the pressing sleeve 8 is superposed with the central axis of the correcting bolt 5; the measuring rod 6 can pass through the central through hole of the correcting bolt 5 and the inner hole of the pressing sleeve 8, and the tail end of the measuring rod is contacted with the outer cylindrical surface of the first shaft section 1-1 or the second shaft section 1-2 of the corrected precise spline shaft 1.
Referring to fig. 7 and 8, the two ends of the fixed seat 4 of the precise spline shaft correcting device are provided with square flanges 4-3, the fixed seat 4 can be stably placed in an annealing furnace through the square flanges 4-3, a sleeve inner hole 4-1 of the fixed seat 4 is a through hole with a variable cross section, a plurality of groups of radial threaded holes 4-2 which are communicated with the sleeve inner hole 4-1 are arranged on the side wall of the sleeve, each group of radial threaded holes 4-2 comprises four radial threaded holes which are uniformly arranged along the circumferential direction, and a correcting bolt 5 is arranged in each radial threaded hole 4-2.
Referring to fig. 9 and 10, the inner hole of the square sleeve 9 of the precise spline shaft correcting device is a circular hole, a plurality of groups of stepped holes 9-1 corresponding to the positions of radial threaded holes 4-2 on the side wall of the fixed seat 4 are arranged on the side wall of the square sleeve 9, and a pressing sleeve 8 is arranged in each stepped hole 9-1.
Referring to fig. 5, 6, 11 and 12, the workpiece positioning and clamping mechanism of the precise spline shaft correcting device of the utility model comprises a first clamping sleeve 3 and a first locking sleeve 2 which are matched with one end of the precise spline shaft 1 to be measured, and also comprises a second clamping sleeve 10 and a second locking sleeve 11 which are matched with the other end of the precise spline shaft 1 to be measured; the outer surface of the first clamping sleeve 3 is a conical surface matched with a first conical hole 4-1-2 in a sleeve inner hole 4-1 of the fixed seat 4, and a first notch 3-1 communicated with the inner hole of the first clamping sleeve 3 is formed in the side wall of the first clamping sleeve 3; the outer surface of the second clamping sleeve 10 is a conical surface matched with a second conical hole 4-1-4 in a sleeve inner hole 4-1 of the fixed seat 4, and a second notch 10-1 communicated with the inner hole is formed in the side wall of the second clamping sleeve 10; the first locking sleeve 2 is provided with an external thread matched with the first internal thread 4-1-1 in the sleeve inner hole 4-1 of the fixed seat 4; the second locking sleeve 11 is provided with an external thread matched with the second internal thread 4-1-3 in the sleeve inner hole 4-1 of the fixed seat 4.
Referring to fig. 1 to 12, the utility model provides a precision spline shaft correcting device, which comprises the following operation steps when the correcting device is used for correcting a precision spline shaft 1 workpiece: firstly, after the pressing sleeve 8 and the square sleeve 9 are assembled, the square sleeve 9 is placed in a sleeve inner hole 4-1 of the fixed seat, then the correcting bolt 5 is assembled in a radial threaded hole 4-2 of the fixed seat 4, and the square sleeve 9 is positioned and assembled by matching the pressing sleeve 8 and the correcting bolt 5; a first clamping sleeve 3, a first locking sleeve 2, a second clamping sleeve 10 and a second locking sleeve 11 are respectively assembled at two ends of a sleeve inner hole 4-1 of the fixed seat 4; placing a precise spline shaft 1 to be corrected in an inner hole of a square sleeve 9, screwing a first locking sleeve 2 and a second locking sleeve 11, moving outer conical surfaces of a first clamping sleeve 3 and a second clamping sleeve 10 inwards along the hole walls of a first conical hole 4-1-2 and a second conical hole 4-1-4 at two ends of a fixed seat 4 respectively under the action of axial pressure of the first locking sleeve 2 and the second locking sleeve 11, and driving the first clamping sleeve 3 and the second clamping sleeve 11 to contract inwards to clamp and fix two ends of the precise spline shaft 1 at the same time, wherein the first clamping sleeve 3 and the second clamping sleeve 10 tend to close at the same time; measuring the corresponding points of each correcting bolt 5 on the workpiece by using the measuring rod 6, and comparing the measuring result with a standard value; loosening the second locking sleeve 11, adjusting the screwing-in depth of the correcting bolt 5 aiming at the measuring point with the measuring result not meeting the requirement, and applying pressure to the precise spline shaft 1 to be corrected through the correcting bolt 5 to enable the precise spline shaft to generate plastic deformation; the measurement of the measuring rod 6 and the process of adjusting the screwing-in depth of the correcting bolt 5 are repeated until the measurement results of all the measurement points reach the standard requirements (preferably, the measurement results are slightly smaller than the set standard tolerance value, so that after the correcting bolt 5 is removed, the coaxiality and the circular runout tolerance of the outer cylindrical surface of the corrected precise spline shaft 1 meet the technical requirements), the second locking sleeve 11 is screwed, and the two ends of the workpiece are clamped and fixed through the workpiece positioning and clamping mechanism; and (3) placing the precise spline shaft and the correcting device into an annealing furnace for heat treatment (the annealing temperature is 470 ℃ for the precise spline shaft with Rockwell hardness HRC = 30-35, and the annealing temperature is 510 ℃ for the precise spline shaft with Rockwell hardness HRC = 35-37).
Claims (7)
1. A precise spline shaft correcting device is characterized by comprising a fixed seat (4), a square sleeve (9), a workpiece positioning and clamping mechanism and a correcting and executing mechanism; the fixed seat (4) is a cylindrical sleeve, a sleeve inner hole (4-1) is a variable cross-section through hole, a square sleeve (9) is assembled in the middle of the sleeve inner hole (4-1), workpiece positioning and clamping mechanisms are assembled at two ends of the sleeve inner hole (4-1), and a plurality of groups of radial threaded holes (4-2) communicated with the sleeve inner hole (4-1) are formed in the side wall of the sleeve; the inner hole of the square sleeve (9) is a round hole, and a plurality of groups of stepped holes (9-1) corresponding to the positions of radial threaded holes (4-2) in the side wall of the fixed seat (4) are formed in the side wall of the square sleeve (9); the correcting and executing mechanism comprises a correcting bolt (5) and a pressing sleeve (8), the correcting bolt (5) is a hollow bolt, the correcting bolt (5) is installed in a radial threaded hole (4-2) in the side wall of the fixing seat (4), the pressing sleeve (8) is of a stepped sleeve structure and is installed in a stepped hole (9-1) of the square sleeve (9), and the central axis of an inner hole of the pressing sleeve (8) coincides with the central axis of the correcting bolt (5).
2. The precise spline shaft correcting device according to claim 1, characterized in that a measuring rod (6) is further provided, the measuring rod (6) can pass through the central through hole of the correcting bolt (5) and the inner hole of the pressing sleeve (8), and the tail end of the measuring rod is contacted with the outer cylindrical surface of the first shaft section (1-1) or the second shaft section (1-2) of the corrected precise spline shaft (1).
3. The precise spline shaft correcting device according to claim 1 or 2, characterized in that a cushion block (7) is further provided, and the cushion block (7) is embedded in the groove (1-3) of the corrected precise spline shaft (1).
4. The precise spline shaft correcting device according to claim 3, wherein a first internal thread (4-1-1) and a second internal thread (4-1-3) are respectively arranged at two ends of a sleeve inner hole (4-1) of the fixed seat (4); in the sleeve inner hole (4-1) of the fixed seat, the hole section adjacent to the first internal thread (4-1-1) is a first conical hole (4-1-2), and the hole section adjacent to the second internal thread (4-1-3) is a second conical hole (4-1-4).
5. The precise spline shaft correcting device according to claim 4, wherein the workpiece positioning and clamping mechanism comprises a first clamping sleeve (3) and a first locking sleeve (2) which are matched with one end of the precise spline shaft (1) to be measured, and further comprises a second clamping sleeve (10) and a second locking sleeve (11) which are matched with the other end of the precise spline shaft (1) to be measured; the outer surface of the first clamping sleeve (3) is a conical surface matched with a first conical hole (4-1-2) in a sleeve inner hole (4-1) of the fixed seat (4), and a first notch (3-1) communicated with the inner hole is formed in the side wall of the first clamping sleeve (3); the outer surface of the second clamping sleeve (10) is a conical surface matched with a second conical hole (4-1-4) in a sleeve inner hole (4-1) of the fixed seat (4), and a second notch (10-1) communicated with the inner hole is formed in the side wall of the second clamping sleeve (10); the first locking sleeve (2) is provided with an external thread matched with the first internal thread (4-1-1) in the sleeve inner hole (4-1) of the fixed seat (4); the second locking sleeve (11) is provided with an external thread matched with the second internal thread (4-1-3) in the sleeve inner hole (4-1) of the fixed seat (4).
6. The precise spline shaft correcting device according to claim 3, wherein each group of radial threaded holes (4-2) on the side wall of the fixed seat (4) comprises four radial threaded holes uniformly arranged along the circumferential direction.
7. The precise spline shaft correcting device according to claim 1, wherein square flanges (4-3) are arranged at two ends of the fixing seat (4), and the fixing seat (4) can be stably placed in an annealing furnace through the square flanges (4-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121392186.1U CN215560513U (en) | 2021-06-22 | 2021-06-22 | Precise spline shaft correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121392186.1U CN215560513U (en) | 2021-06-22 | 2021-06-22 | Precise spline shaft correcting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215560513U true CN215560513U (en) | 2022-01-18 |
Family
ID=79819564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121392186.1U Active CN215560513U (en) | 2021-06-22 | 2021-06-22 | Precise spline shaft correcting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215560513U (en) |
-
2021
- 2021-06-22 CN CN202121392186.1U patent/CN215560513U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113699353A (en) | Precise spline shaft correcting device | |
| CN215560513U (en) | Precise spline shaft correcting device | |
| CN113695686B (en) | Processing method of heavy-load herringbone gear ring processed in split splicing mode and correction tool thereof | |
| CN203804344U (en) | Non-backlash centering auto-compensation positioning device | |
| CN107598590B (en) | Precise tool for machining valve sleeve hole and valve sleeve machining equipment | |
| CN204976139U (en) | Mill hexagon nut hexagonal milling fixture fast | |
| CN108955491B (en) | Multifunctional chassis tool for measuring piston profile by roundness measuring instrument and measuring method thereof | |
| CN108436123B (en) | Anchor clamps suitable for quick clamping of thin wall part | |
| CN108481192A (en) | A kind of mill fixture and clamping method suitable for the long spacer of thin-walled | |
| CN110757198B (en) | Mortise broaching clamp | |
| CN219766832U (en) | Internal tension mandrel tool | |
| CN202192469U (en) | Clamp for gear with multiple pitch-circle mandrils | |
| CN112548705A (en) | Grinding tool for thin-wall circular ring part | |
| CN111570837A (en) | Special mandrel for processing slender thin-wall parts | |
| CN113714571B (en) | Inner and outer tooth centering control structure of high-speed precision heavy-duty herringbone gear ring and machining method | |
| CN212398903U (en) | High-precision gapless disc-shaped disc positioning tool | |
| CN212095298U (en) | Clamp for processing shaft sleeve with external thread surface | |
| CN113547143B (en) | Thin-wall structural member clamping device | |
| CN115319691A (en) | Manual cylinder aligning tool of rotor compressor and aligning method thereof | |
| CN110524278B (en) | Rotary positioning device | |
| CN217858930U (en) | Fixture for circumferential multi-hole machining of thin-wall small revolving body part | |
| CN209925394U (en) | Thread taper core rod and thread taper core rod group | |
| CN108422637B (en) | Double-wall corrugated pipe die head wall deviation adjusting device and wall deviation adjusting method | |
| CN109500595B (en) | Riveting device and method for locking and supporting casing assembly and bushing assembly | |
| CN111590350A (en) | Eccentric inner hole part machining clamp and eccentric inner hole part machining method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |