CN219684049U - Large-scale spline shaft sleeve processing tool for correcting deformation of cantilever main shaft - Google Patents
Large-scale spline shaft sleeve processing tool for correcting deformation of cantilever main shaft Download PDFInfo
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- CN219684049U CN219684049U CN202321226083.7U CN202321226083U CN219684049U CN 219684049 U CN219684049 U CN 219684049U CN 202321226083 U CN202321226083 U CN 202321226083U CN 219684049 U CN219684049 U CN 219684049U
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- 238000003754 machining Methods 0.000 claims abstract description 28
- 238000003801 milling Methods 0.000 abstract description 16
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- 238000003672 processing method Methods 0.000 description 4
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a large-scale spline shaft sleeve processing tool for correcting the deformation of a cantilever main shaft, which comprises an indexing tool, wherein the indexing tool is annular, the inner ring of the indexing tool is aligned with the top surface of a key groove, and the end surface of the indexing tool is provided with a fixed screw hole and a positioning pin hole which are used for being connected with the end surface of a workpiece; the end face of the indexing tool is also provided with a plurality of indexing grooves, and the number and the size of the indexing grooves correspond to those of the key grooves of the workpiece. During processing, tool setting is performed by using an indexing tool; the workpiece is fixedly arranged on the boring lathe bed, and the z-axis feeding is completed by the movement of the boring lathe bed; and processing keyways in the vertical and horizontal directions after the workpiece is clamped once. Through the indexing fixture, accurate tool setting of the right-angle milling head can be realized, and the machining precision of a common boring machine is ensured. The set main shaft leveling tool can correct the cantilever deformation of the boring machine main shaft, and further improves the machining precision. The correction leveling seat is arranged and can quantitatively correct the cantilever deformation of the boring machine spindle.
Description
Technical Field
The utility model relates to the technical field of large-scale spline shaft sleeve processing, in particular to a large-scale spline shaft sleeve processing tool and a processing method for correcting deformation of a cantilever main shaft.
Background
The spline connection is a connection between the shaft and the bore, the splines on the shaft are called external splines, the splines of the hub bore are called internal splines, and the internal and external splines are of a standard structure. The side of the spline is a working surface, torque is transmitted by mutual extrusion of the internal spline and the external spline during working, and spline connection has the advantages of high centering precision, good guidance quality and large transmission torque. The device is widely applied to the fields of aeroengines, automobiles, gas turbines, machine tools, engineering machinery, tractors, agricultural machinery, general mechanical transmission devices and the like. The spline connection can be divided into two types of small-diameter centering and large-diameter centering according to different centering modes. The small diameter centering means that the inner spline and the outer spline are in clearance fit by taking the small diameter as a matching surface; the large diameter centering means that the inner spline and the outer spline are in clearance fit by taking the large diameter as a matching surface and the small diameter as a clearance fit. The integral length of the spline shaft sleeve of a certain connecting structure exceeds 1200mm, wherein the spline length is 700mm. In the conventional processing mode, the small-diameter precision of the internal spline is easy to meet, but in the processing mode of large-diameter processing, the processing modes of inserting, pulling, planing and the like are often adopted, and the precision is difficult to meet the technical requirements. And the cost is too high by adopting large-scale special equipment.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a large-sized spline shaft sleeve processing tool and a processing method for correcting the deformation of a cantilever main shaft, which can be used for processing by a common boring machine, ensure the processing precision of an internal spline of the large-sized spline shaft sleeve with the length of more than 1 meter, and reduce the processing cost.
In order to solve the technical problems, the utility model adopts the following technical scheme: the large-scale spline shaft sleeve processing tool for correcting the deformation of the cantilever main shaft comprises an indexing tool, wherein the indexing tool is annular, the inner ring of the indexing tool is aligned with the top surface of a key groove, and a fixing screw hole and a positioning pin hole are arranged on the end surface of the indexing tool and are used for being connected with the end surface of a workpiece;
the end face of the indexing tool is also provided with a plurality of indexing grooves, and the number and the size of the indexing grooves correspond to those of key grooves of the workpiece;
the indexing positions of the indexing grooves correspond to the positions of the key grooves, and the positions of the side surfaces of the two sides of the indexing grooves correspond to the positions of the side surfaces of the key grooves.
In a preferred scheme, the indexing groove is arranged along the indexing tool, and the side wall of the indexing groove is aligned with the side wall of the key groove for tool setting by using the side wall of the indexing groove.
In the preferred scheme, the boring machine main shaft leveling device further comprises a main shaft leveling tool, wherein the main shaft leveling tool comprises a connecting plate and a supporting arm, the connecting plate is used for being fixedly connected with a boring machine flat rotating disc, the supporting arm is fixedly connected with the connecting plate, and the supporting arm is used for supporting a boring machine main shaft.
In the preferred scheme, the end of the supporting arm is also provided with a correction leveling seat which is used for contacting with the bottom of the boring machine spindle;
the structure of the correction leveling seat is as follows: the base is fixedly connected with the free end of the supporting arm, the top of the base is provided with a supporting seat, two sides of the supporting seat are provided with baffle plates, the baffle plates are fixedly connected with the base, and the supporting seat is in sliding connection with the baffle plates and the top of the base;
the top of the supporting seat is V-shaped, and the top of the supporting seat is contacted with the boring machine spindle.
In a preferred scheme, at least two groups of supporting rollers are arranged on the top of the supporting seat, and the supporting rollers are respectively positioned near the tops of two ends of the supporting seat.
In the preferred scheme, an alignment wedge block is further arranged on the side surface of one side, connected with the support arm, of the base, and a wedge groove is correspondingly arranged at the free end of the support arm;
a positioning step is arranged on the side surface of one side, connected with the supporting arm, of the base, and the positioning step is used for limiting the height position of the base;
the base is also provided with a connecting bolt hole, and a connecting screw penetrates through the connecting bolt hole to be fixedly connected with the supporting arm.
In the preferred scheme, the base is also provided with at least two groups of vertical correction leveling screws, the two groups of correction leveling screws are respectively propped against the bottom of the supporting seat, and the correction leveling screws are used for correcting deformation of the boring machine spindle in the same way of adjusting the correction leveling screws.
In the preferred scheme, a strain sensor is arranged on the correction leveling screw and is electrically connected with a leveling control device, and the leveling control device is electrically connected with a feedback device and is used for detecting and feeding back the stress born by the correction leveling screw.
The processing method for processing the large-scale spline shaft sleeve by adopting the processing tool for processing the large-scale spline shaft sleeve for correcting the deformation of the cantilever main shaft comprises the following steps of:
s1, fixedly connecting an indexing tool with a workpiece;
s2, enabling the boring machine spindle to extend out and then enabling the boring machine spindle to be fixed in a fixed position;
fixedly connecting a right-angle milling head with a boring mill spindle, arranging a whole hard end mill on the right-angle milling head, wherein the side surface of the whole hard end mill is used for machining the side surface of a key slot, and the top surface of the whole hard end mill is used for machining the top surface of the key slot;
s3, tool setting is performed by utilizing an indexing tool;
the workpiece is fixedly arranged on the boring lathe bed, and the z-axis feeding is completed by the movement of the boring lathe bed;
after the workpiece is clamped once, processing key grooves in the vertical and horizontal directions;
in a preferred embodiment, the method further comprises the following steps:
in the step S1, a blank of a workpiece is axially reserved with enough length to process a fixed screw hole for installing an indexing tool, and an outer circle, an end face and an inner hole are processed on a vertical lathe until the preset size and precision are met;
in the step S2, a main shaft leveling tool is installed and is fixedly connected with a flat rotating disc of a boring machine;
the correction leveling seat is positioned below the boring machine spindle and is contacted with the boring machine spindle, and the correction leveling screw is adjusted until the stress of the correction leveling screw reaches a preset range;
correcting the stress value preset range of the leveling screw according to the relation between the extension length and deformation of the boring machine spindle;
installing a right-angle milling head after the boring mill spindle extends out of place, adjusting the position of the right-angle milling head and the position of the indexing tool, and finishing tool setting trial cutting of the whole hard end mill;
the workpiece is horizontally placed on a V-shaped iron of a boring machine body workbench, and the horizontal and vertical runout precision of an indexing groove on the end face of the workpiece is corrected according to an indexing tool.
According to the large-scale spline shaft sleeve machining tool and method for correcting the deformation of the cantilever main shaft, through the arranged indexing tool, accurate tool setting of the right-angle milling head can be achieved, and machining precision of a common boring machine is ensured. The set main shaft leveling tool can correct the cantilever deformation of the boring machine main shaft, and further improves the machining precision. The correction leveling seat is arranged and can quantitatively correct the cantilever deformation of the boring machine spindle. According to the machining method, the workpiece motion is used for replacing the motion of the boring machine spindle, so that the deformation of the boring machine spindle is reduced, and the machining precision of the internal spline is further ensured.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural view of the large-sized spline shaft sleeve workpiece in the machining process.
Fig. 2 is a schematic diagram of the end face structure of a workpiece according to the present utility model.
Fig. 3 is a front view of the indexing fixture of the present utility model.
Fig. 4 is a side view of the indexing tooling of the present utility model.
Fig. 5 is a bottom view of the spindle leveling tool of the present utility model.
Fig. 6 is a side view of the spindle leveling tool of the present utility model.
Fig. 7 is a front view of the spindle leveling tool of the present utility model.
Fig. 8 is a front view of the modified leveling base of the present utility model.
FIG. 9 is a block diagram of an automatic correction circuit for correcting a leveling base according to the present utility model.
In the figure: workpiece 1, fixing screw hole 101, key slot 102, positioning pin hole 103, finish hard end mill 2, right angle milling head 3, correction leveling base 4, connecting screw 401, supporting base 402, base 403, correction leveling screw 404, leveling control device 405, supporting roller 406, baffle 407, alignment wedge 408, positioning stage 409, strain sensor 410, connecting bolt hole 411, led lamp 412, power supply 413, indexing fixture 5, screw hole 51, indexing groove 52, positioning pin hole 53, fixing screw 6, spindle leveling fixture 7, connecting plate 71, supporting arm 72, boring machine spindle 8.
Detailed Description
Example 1:
as shown in fig. 1-4, a large-scale spline shaft sleeve processing tool for correcting deformation of a cantilever main shaft comprises an indexing tool 5, wherein the indexing tool 5 is annular, an inner ring of the indexing tool 5 is aligned with the top surface of a key slot 102, the end surface of the indexing tool 5 is provided with a fixed screw hole 101 and a positioning pin hole 103, and the fixed screw hole 101 and the positioning pin hole 103 are used for being connected with the end surface of a workpiece 1; the positioning pin holes 103 are used for improving the installation accuracy of the indexing fixture 5.
The end face of the indexing fixture 5 is also provided with a plurality of indexing grooves 52, the number and the size of the indexing grooves 52 correspond to those of the key grooves 102 of the workpiece 1, the indexing positions of the indexing grooves 52 correspond to those of the key grooves 102, and the side face positions of the two sides of the indexing grooves 52 correspond to those of the two side faces of the key grooves 102. With this structure, the boring machine is facilitated to process the key groove 102, and the processing precision is improved. Before the indexing fixture 5 is used, the related dimensional accuracy and form and position tolerance are detected by adopting high-accuracy three-coordinate detection.
The indexing groove 52 is preferably arranged along the indexing fixture 5 as shown in fig. 3 and 4, with the side walls of the indexing groove 52 aligned with the side walls of the key slot 102 for indexing with the side walls of the indexing groove 52.
In the preferred scheme, as shown in fig. 5-7, the boring machine comprises a boring machine main shaft 8, and further comprises a main shaft leveling tool 7, wherein the main shaft leveling tool 7 comprises a connecting plate 71 and a supporting arm 72, the connecting plate 71 is fixedly connected with a boring machine flat rotating disc, the supporting arm 72 is fixedly connected with the connecting plate 71, and the supporting arm 72 is used for supporting the boring machine main shaft 8. The cross section of the supporting arm 72 is T-shaped, and a plurality of process holes are also arranged on the supporting arm 72 to reduce dead weight.
In a preferred embodiment, as shown in fig. 7 and 8, a correction leveling seat 4 is further arranged at the end of the supporting arm 72, and the correction leveling seat 4 is used for contacting with the bottom of the boring machine spindle 8; the cantilever structure is affected by gravity and has certain deformation, so that when the boring machine is provided with the right-angle milling head 3 to mill the key groove 102 by the whole hard end mill 2, the precision error exceeds the standard, and the arranged main shaft leveling tool 7 can support part of self weight to reduce deformation, but the precision is still not ideal.
The structure of the correction leveling base 4 is as follows: the base 403 is fixedly connected with the free end of the supporting arm 72, the top of the base 403 is provided with a supporting seat 402, two sides of the supporting seat 402 are provided with a baffle plate 407, the baffle plate 407 is fixedly connected with the base 403, and the supporting seat 402 is in sliding connection with the baffle plate 407 and the top of the base 403;
the top of the supporting seat 402 is V-shaped, and the top of the supporting seat 402 is contacted with the boring machine spindle 8. With this structure, the support base 402 can be automatically centered.
Preferably, as shown in fig. 8, at least two sets of support rollers 406 are provided on top of support base 402, support rollers 406 being positioned adjacent to the top of each end of support base 402. With this configuration, support base 402 can also provide better support for certain processes where boring bar rotation is required, such as when finishing small diameters.
In a preferred embodiment, as shown in fig. 7 and 8, an alignment wedge 408 is further provided on a side surface of the base 403 connected to the support arm 72, and a wedge-shaped groove is provided at the free end of the support arm 72 correspondingly; with this configuration, the base 403 is ensured to be positioned laterally centered.
A positioning step 409 is arranged on the side surface of the base 403 connected with the support arm 72, and the positioning step 409 is used for limiting the height position of the base 403; with this structure, the base 403 is ensured to be vertically limited.
The base 403 is also provided with a connecting bolt hole 411, and the connecting screw 401 passes through the connecting bolt hole 411 to be fixedly connected with the supporting arm 72.
In the preferred scheme, as shown in fig. 7 and 8, a vertical correction leveling screw 404 is further arranged on the base 403, at least two groups of correction leveling screws 404 are arranged, the correction leveling screws 404 of the two groups are respectively propped against the bottom of the supporting seat 402, and the correction leveling screws 404 are adjusted to correct deformation of the boring machine spindle 8. The correction leveling screw 404 is provided so as to correct the cantilever deformation of the boring machine spindle 8, and in particular, to provide a supporting force for cutting of the finish hard end mill 2, thereby ensuring machining accuracy.
In a preferred embodiment, a strain sensor 410 is disposed on the leveling screw 404, the strain sensor 410 is electrically connected to the leveling control device 405, and the leveling control device 405 is electrically connected to the feedback device, so as to detect and feedback the stress applied to the leveling screw 404. Preferably, the feedback device is an LED lamp 412. A power source, such as a battery, is also provided to power the leveling control arrangement 405 and the LED lights 412. When the leveling device is used, after the leveling screw 404 is screwed, the strain sensor 410 is a piezoelectric element, an electric signal is generated through pressure change, the electric signal is input into an AC-DC circuit of the leveling control device 405 and then converted into a digital signal, a main control chip, such as an STM32F series chip, is further arranged in the leveling control device 405, and the leveling control device 405 controls the LED lamp 412 to emit light after comparing with a preset pressure value. Preferably, the LED lamp 412 has at least two colors of light, when the pressure does not reach the preset value, the LED lamp 412 does not emit light, when the pressure reaches the preset value, the LED lamp 412 emits the first color light, when the pressure exceeds the preset value, the LED lamp 412 emits the second color light, and therefore, the structure can assist in controlling and correcting the adjustment of the leveling screw 404, and the machining precision and the machining efficiency are improved.
Example 2:
taking a flat bottom large-diameter internal spline with parameters of 12×400H7×430H10×50H9 GB/T1144 as an example, the processing method for processing the large-size spline shaft sleeve by adopting the processing tool for processing the large-size spline shaft sleeve for correcting the deformation of the cantilever main shaft comprises the following steps:
s1, reserving enough length, preferably 50mm, for machining a fixing screw hole 101 for installing an indexing tool 5, and machining an outer circle, an end face and an inner hole on a vertical lathe until the preset size and precision are met, for example, a small diameter phi 400H7.
The indexing fixture 5 is machined, wherein the positioning pin holes 53 are in the size of phi 10mm, and the total number of the positioning pin holes is 2. The indexing grooves 52 are uniformly distributed along the indexing circumference of 12-30H 7.
Fixedly connecting the indexing fixture 5 with the workpiece 1;
s2, as shown in FIG. 1, a main shaft leveling tool 7 is installed, and the main shaft leveling tool 7 is fixedly connected with a flat rotating disc of a boring machine;
the correction leveling seat 4 is positioned below the boring machine spindle 8 and is in contact with the boring machine spindle 8, and the correction leveling screw 404 is adjusted until the stress of the correction leveling screw 404 reaches a preset range;
the stress value preset range of the correction leveling screw 404 is obtained according to the relation between the extension length and deformation of the boring machine spindle 8;
after the boring mill spindle 8 extends out of place, a right-angle milling head 3 is installed, the positions of the right-angle milling head 3 and an indexing tool 5 are adjusted to be fixed, and tool setting trial cutting of the whole hard end mill 2 is completed;
the workpiece 1 is fixedly arranged on a boring machine tool body, preferably, the workpiece 1 is horizontally arranged on a V-shaped iron of a boring machine tool body workbench, the horizontal and vertical runout precision of an end surface indexing groove of the workpiece 1 is corrected to be less than or equal to 0.02mm according to an indexing tool 5, and the workpiece 1 is pressed by a pressing plate.
The boring mill spindle 8 is extended to be fixed at a fixed position; the z-axis feeding is completed by the movement of the boring lathe bed;
fixedly connecting a right-angle milling head 3 with a boring machine spindle 8, arranging a whole hard end mill 2 on the right-angle milling head 3, wherein the side surface of the whole hard end mill 2 is used for machining the side surface of a key slot 102, and the top surface of the whole hard end mill 2 is used for machining the top surface of the key slot 102;
s3, tool setting is carried out by utilizing an indexing tool 5;
milling the tooth side of the spline key groove 102 by using a side edge of the whole hard end milling cutter 2, wherein the control sizes of the two side edges are symmetrical relative to the axis of the small diameter, as shown in fig. 2, and the size 50H9, the symmetry degree 0.03 and the roughness Ra1.6 are ensured; milling the major diameter of the spline by using the bottom edge of the whole hard end mill 2, and ensuring the dimension 430H10 and the roughness Ra3.2.
After the workpiece 1 is clamped once, a key groove 102 in the vertical direction and the horizontal direction is machined; and repeating the clamping for 3 times, correcting horizontal and vertical runout less than or equal to 0.02mm according to the indexing groove 52 each time, and resetting the tool to ensure the circumferential indexing accuracy and the tooth width symmetry of the spline teeth.
And (3) measuring the machining precision of the spline shaft sleeve once by using an inside micrometer and a special gauge, taking down the machining tool after the technical index is met, reworking on a vertical lathe, and turning the vertical lathe to the axial final size.
The milling processing of the large spline shaft sleeve with high precision and low cost is realized by the common boring machine through the steps.
The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (10)
1. A large-scale spline shaft sleeve processing frock of correction cantilever main shaft warp, characterized by: the device comprises an indexing tool (5), wherein the indexing tool (5) is annular, the inner ring of the indexing tool (5) is aligned with the top surface of a key groove (102), the end surface of the indexing tool (5) is provided with a fixed screw hole (101) and a positioning pin hole (103), and the fixed screw hole (101) and the positioning pin hole (103) are used for being connected with the end surface of a workpiece (1);
the end face of the indexing tool (5) is also provided with a plurality of indexing grooves (52), the number and the size of the indexing grooves (52) correspond to those of the key grooves (102) of the workpiece (1), the indexing positions of the indexing grooves (52) correspond to the positions of the key grooves (102), and the side face positions of the two sides of the indexing grooves (52) correspond to the side face positions of the two sides of the key grooves (102).
2. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 1, wherein the tool is characterized in that: the indexing groove (52) is arranged along the indexing tool (5), and the side wall of the indexing groove (52) is aligned with the side wall of the key groove (102) for tool setting by the side wall of the indexing groove (52).
3. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 1, wherein the tool is characterized in that: the boring machine comprises a boring machine main shaft (8), and is characterized by further comprising a main shaft leveling tool (7), wherein the main shaft leveling tool (7) comprises a connecting plate (71) and a supporting arm (72), the connecting plate (71) is fixedly connected with a boring machine flat rotating disc, the supporting arm (72) is fixedly connected with the connecting plate (71), and the supporting arm (72) is used for supporting the boring machine main shaft (8).
4. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 3, wherein the tool comprises the following components: the end of the supporting arm (72) is also provided with a correction leveling seat (4), and the correction leveling seat (4) is used for contacting with the bottom of the boring machine spindle (8);
the structure of the correction leveling seat (4) is as follows: the base (403) is fixedly connected with the free end of the supporting arm (72), the top of the base (403) is provided with a supporting seat (402), two sides of the supporting seat (402) are provided with baffle plates (407), the baffle plates (407) are fixedly connected with the base (403), and the supporting seat (402) is in sliding connection with the baffle plates (407) and the top of the base (403);
the top of the supporting seat (402) is V-shaped, and the top of the supporting seat (402) is contacted with the boring machine main shaft (8).
5. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 4, wherein the tool is characterized in that: at least two groups of supporting rollers (406) are arranged on the top of the supporting seat (402), and the supporting rollers (406) are respectively positioned near the tops of two ends of the supporting seat (402).
6. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 4, wherein the tool is characterized in that: an aligning wedge block (408) is further arranged on the side surface of the base (403) connected with the supporting arm (72), and a wedge groove is correspondingly arranged at the free end of the supporting arm (72).
7. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 6, wherein the tool is characterized in that: a positioning step (409) is arranged on the side surface of the base (403) connected with the supporting arm (72), and the positioning step (409) is used for limiting the height position of the base (403).
8. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 7, wherein the tool is characterized in that: the base (403) is also provided with a connecting bolt hole (411), and the connecting screw (401) passes through the connecting bolt hole (411) to be fixedly connected with the supporting arm (72).
9. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 4, wherein the tool is characterized in that: the base (403) is also provided with vertical correction leveling screws (404), at least two groups of correction leveling screws (404) are arranged, the correction leveling screws (404) of the two groups are respectively propped against the bottom of the supporting seat (402), and the correction leveling screws (404) are adjusted to correct deformation of the boring machine spindle (8).
10. The large-scale spline shaft sleeve machining tool for correcting deformation of a cantilever main shaft according to claim 9, wherein the tool is characterized in that: the correction leveling screw (404) is provided with a strain sensor (410), the strain sensor (410) is electrically connected with a leveling control device (405), and the leveling control device (405) is electrically connected with a feedback device and is used for detecting and feeding back the stress born by the correction leveling screw (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321226083.7U CN219684049U (en) | 2023-05-20 | 2023-05-20 | Large-scale spline shaft sleeve processing tool for correcting deformation of cantilever main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321226083.7U CN219684049U (en) | 2023-05-20 | 2023-05-20 | Large-scale spline shaft sleeve processing tool for correcting deformation of cantilever main shaft |
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| Publication Number | Publication Date |
|---|---|
| CN219684049U true CN219684049U (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321226083.7U Active CN219684049U (en) | 2023-05-20 | 2023-05-20 | Large-scale spline shaft sleeve processing tool for correcting deformation of cantilever main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219684049U (en) |
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2023
- 2023-05-20 CN CN202321226083.7U patent/CN219684049U/en active Active
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