CN212794097U - Material increase repairing tool for key parts of equipment - Google Patents
Material increase repairing tool for key parts of equipment Download PDFInfo
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- CN212794097U CN212794097U CN202020705292.XU CN202020705292U CN212794097U CN 212794097 U CN212794097 U CN 212794097U CN 202020705292 U CN202020705292 U CN 202020705292U CN 212794097 U CN212794097 U CN 212794097U
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Abstract
The utility model relates to a material increase repair tool for key parts of equipment, which comprises an outer ring and an inner ring, wherein the outer ring is fixed with a main shaft hole of a machine tool and plays a supporting role, the inner ring is a three-petal aluminum ring playing a role in clamping and adjusting a screw rod, the radian of each petal of the inner ring is 110-120 degrees, and the petal spacing is 2-5 mm; 3 groups of ball head adjusting screws are designed between the inner ring aluminum ring and the outer ring of the outer ring, are in point contact with the aluminum ring, and can change the position of the central point of the screw rod through the three adjusting screws. The utility model discloses the outer loop is fixed and play the supporting role's outer loop with lathe main shaft through-hole, has ensured holistic rigidity of frock and intensity, is favorable to the lead screw to adjust for the axiality of through-hole lathe main shaft centre bore.
Description
Technical Field
The utility model relates to a frock is restoreed to vibration material disk of equipment key spare part for the surface wear of longer lead screw or axle type part (more than 2 m) is restoreed in the main equipment, belongs to equipment maintenance technical field.
Background
A large imported machine tool device is an irreplaceable important single-point device in military scientific research and production. Most important core parts are imported, the precision is high, the price is high, the supply period is long, and once the damage condition occurs, the long-time shutdown of equipment is often caused, so that huge economic loss is caused.
Such parts usually can produce wearing and tearing at the bearing installation position, utilize traditional brush plating technique can carry out vibration material disk restoration (wearing and tearing volume within 0.5 mm) to the wearing and tearing position of metal parts, nevertheless because lead screw and axle type part length of large-scale machine tool class equipment are longer, and itself has higher precision requirement again, generally requires that the axiality is less than 0.005mm, and brush plating technique can only solve the vibration material disk problem, can't solve the restoration precision problem. Taking a lead screw and shaft parts as examples, the german lead screw with the length of 3m of large-scale import equipment has extremely high precision requirement, the coaxiality of a bearing installation position is less than 0.005mm, the lead screw usually needs dozens of thousands of yuan, the supply period is more than 4 months, and if no novel repairing method is available, the parts can only be discarded and replaced, so that huge economic loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the tool is adjusted through two sets of adjustable three-point positioning centers and matched with a lathe with a main shaft center through hole, and high-precision repair of key worn parts can be achieved.
The utility model provides a technical scheme be:
a material increase repairing tool for key parts of equipment comprises an outer ring and an inner ring, wherein the outer ring is fixed with a main shaft hole of a machine tool and plays a supporting role, the inner ring is a three-petal aluminum ring playing a role in clamping and adjusting a screw rod, the radian of each petal of the inner ring is 110-120 degrees, and the petal spacing is 2-5 mm; 3 groups of ball head adjusting screws are designed between the inner ring aluminum ring and the outer ring of the outer ring, are in point contact with the aluminum ring, and can change the position of the central point of the screw rod through the three adjusting screws.
Preferably, the outer ring is of an upper layer circular perforated structure and a lower layer circular perforated structure and is used for being connected with a through hole of a lathe spindle in a matched mode and supporting the inner ring.
Preferably, the inner ring hardness HRC is lower than 20 and lower than the surface hardness of the screw rod.
Preferably, two groups of center adjusting screws at two ends are adjusted to adjust the coaxiality of the diameter center points of the screw rod at two ends of the through hole of the machine tool, finally, the radial circular runout of two sides is ensured to be less than 0.003mm, and the coaxiality of the whole screw rod and a worn part in the rotation process of the main shaft of the machine tool is ensured to be within 0.005 mm.
Preferably, the inner diameter of the inner ring is 0.03mm-0.05mm larger than the inner diameter of the screw rod.
Compared with the prior art, the utility model beneficial effect be:
(1) the outer ring of the utility model is an outer ring which is fixed with the through hole of the lathe spindle and plays a supporting role, thereby ensuring the integral rigidity and strength of the tool and being beneficial to the coaxiality adjustment of the lead screw relative to the central hole of the through hole lathe spindle;
(2) the utility model discloses the inner ring is for playing three lamella formula aluminum rings to screw centre gripping adjustment effect, includes 6-8 group adjusting locking screws in addition, and wherein 3 group's screws are the bulb screw, and outside outer ring is the circular trompil structure in lower floor for the cooperation is connected with lathe main shaft through-hole and supports inner ring aluminum ring lamella.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the present invention with a lead screw.
Detailed Description
The present invention will be further explained with reference to the following examples.
As shown in fig. 1 and 2, an additive repairing tool for a key component of equipment comprises the following parts: the outer ring is fixed with a main shaft hole of the machine tool and plays a supporting role; the inner ring is a three-petal aluminum ring which plays a role in clamping and adjusting the screw; 6-8 groups of screws, wherein 3 groups of screws are ball screws. The outer ring is of an upper-layer circular perforated structure and a lower-layer circular perforated structure, is used for being connected with a through hole of a lathe spindle in a matching mode and supporting an inner ring aluminum ring valve, and is made of 45# steel or A3 steel materials. The inner ring three-petal type aluminum ring can be made of 2 series aluminum alloy or brass or red copper materials, the HRC (hardness Rockwell hardness) of the aluminum ring is ensured to be lower than 20, namely the HRC is far lower than the surface hardness of the lead screw, and the effect of protecting the lead screw is achieved. The screw adopts steel screw more than 8.8 grades, ensures frock support intensity, and ball screw need be chooseed for use to 3 wherein groups screws for adjust lead screw central point.
The outer side of the tool is provided with an outer ring, and the outer ring is connected with a lathe spindle in a locking way through 3-4 groups of screws with strength of more than 8.8 grades; the inner side of the tool is provided with a three-petal aluminum ring, the radian of each piece is 110-120 degrees, the three-petal aluminum ring is fixedly connected with an outer ring through 3 groups of ball head screws with the strength of more than 8.8 levels, and the head part of the ball head adjusting screw is in point contact with the aluminum ring; the inner surface of the aluminum ring is connected with the cambered surface of the lead screw needing to be clamped internally in a clamping way.
The lead screw is clamped on a lathe through two groups of three-point type center adjusting tools, and radial runout values of two sides are determined through complete circumferential dividing tables of two ends of the lead screw. The coaxiality of the diameter central points of the lead screw at the two ends of the through hole of the machine tool is adjusted by adjusting the two groups of center adjusting ball screws at the two ends, and finally the radial circular runout of the two sides is ensured to be less than 0.003mm, so that the coaxiality of the whole lead screw and the worn part in the rotation process of the main shaft of the machine tool can be ensured to be within 0.005 mm. After the coaxiality of the screw rod is adjusted, in order to keep the adjusted precision, filling glue is poured into an adjusting groove between the aluminum ring and the outer ring, the filling glue can be cured at normal temperature for 24 hours, point contact is changed into large-area complete contact, and the adjusted precision cannot generate deviation. In order to prevent the filler glue and the outer ring from sticking together, a layer of separating agent can be coated on the outer ring before assembly, and all parts can be detached after the processing is finished. After the coaxial precision of the screw rod is adjusted through the tool, subsequent repairing steps such as rough turning, fine turning, manual grinding and the like can be carried out on the worn part of the screw rod.
Such lead screw spare part can usually produce wearing and tearing at the bearing installation position, utilizes traditional brush plating technique can carry out vibration material disk restoration (wearing and tearing volume within 0.5 mm) to the wearing and tearing position of metal spare part, nevertheless because lead screw and axle type part length of large-scale machine tool class equipment are longer, and itself has higher precision requirement again, generally requires that the axiality is less than 0.005mm, and brush plating technique can only solve the vibration material disk problem, can't solve the restoration precision problem.
The specific manufacturing method comprises the following steps:
1) according to the diameter of the lead screw, two sets of center adjusting and clamping tools suitable for clamping two sides of the spindle center through hole lathe are designed and manufactured. The outer side of the tool is provided with an outer ring, and the outer ring and a lathe spindle can be locked through 4 screws; the inner side of the tool is provided with a three-petal type aluminum ring, each blade is 120 degrees, the blade interval is 2mm, the inner diameter of the aluminum ring is 0.05mm larger than the inner diameter of the lead screw, the three-petal type aluminum ring of the inner ring can be made of 2 series aluminum alloy or brass and red copper materials, the hardness HRC of the aluminum ring is ensured to be lower than 20, namely the hardness of the aluminum ring is far lower than the surface hardness of the lead screw, and the effect of protecting the lead screw is achieved. There are 3 groups of ball head adjusting screws between the inner ring aluminum ring and the outer ring, the aluminum ring mills the flat slot in the adjusting screw, and is the point contact with the adjusting screw. A circle is determined by the three points, the structure can change the position of the central point of the screw rod by changing the clamping position of the internal aluminum ring through the three adjusting screws, and then the coaxiality of the diameter central points of the screw rod at the two ends of the through hole of the machine tool is adjusted.
2) Preparing the center adjusting tool manufactured in the step 1), preparing a lathe with a center through hole, clamping a lead screw on the lathe through a left three-point center adjusting tool and a right three-point center adjusting tool, changing the clamping degree of three aluminum rings by adjusting a ball screw between an inner ring and an outer ring of the tool, further changing the position of the inner aluminum ring, further changing the position of the center point of two ends of the lead screw, finally enabling the coaxiality of a worn part of the lead screw and the coaxiality of a main shaft of a machine tool to be within 0.005mm, and ensuring the rotating coaxiality of the worn part of the lead screw in the rotating process of the main shaft of the. After the coaxiality is adjusted, the adjusting screw and the aluminum ring are in point contact, which is beneficial to adjustment, but in the later ball screw processing and repairing process, the clamping structure is only in point contact, which is not beneficial to maintaining the precision under the condition of part rotation, and the precision is easy to generate deviation. In order to keep the adjusted precision, filling glue is poured into the adjusting groove between the aluminum ring and the outer ring, and the aluminum ring and the outer ring can be cured at normal temperature for 24 hours, so that point contact is changed into full contact in a large area, and the adjusted precision cannot generate deviation. In order to prevent the filler glue and the outer ring from sticking together, a layer of separating agent can be coated on the outer ring before assembly, and all parts can be detached after the processing is finished.
3) And (3) carrying out nickel-based alloy brush plating additive processing on the worn surface of the screw rod fixed on the lathe through the tool obtained in the step 2). The lead screw needs to be cleaned before brush plating, acetone is used for wiping to remove oil, the material is removed by 0.03mm during machining, cutting cooling liquid cannot be used during machining, and the periphery of a part to be subjected to brush plating is protected. The current can not be too large in the brush plating process, otherwise the metal plating layer is not compact enough. The brush plating speed needs to be controlled to increase the thickness of a plating layer by 0.001mm every time the spindle of the machine tool rotates 5 circles. If the temperature of the brush plating area is 15 ℃ higher than the room temperature, the brush plating is continued after the temperature is reduced. The size of the coating of the final repair area is 0.05mm higher than the reference surface of the ball screw.
4) Carrying out fine turning and grinding repair on the screw maintaining part obtained in the step 3), and preparing grinding sand, alcohol, kerosene and sand paper (the granularity is required to be prepared from 400 meshes to 1000 meshes). And (4) putting the ball screw of the frame dial indicator on the unworn part, measuring the jumping amount, and marking a jumping high point by using a marking pen. The main shaft of the machine tool and the ball screw are adjusted to be coaxial before, so the jumping quantity value is the jumping quantity of the main shaft of the machine tool, and a high point of the screw is convenient to repair later.
5) And (4) carrying out rough turning repair on the lead screw obtained in the step 4), and roughly turning the brush plating part. The remaining amount before grinding is generally 0.01 to 0.02 mm. Rough turning, and leaving a margin of 0.03mm on one side.
6) And (3) polishing the lead screw repairing surface obtained in the step 5) by using 400-mesh sand paper. The single side margin of 0.03mm is too large to exceed the inner diameter of the grinding sleeve, and only relatively coarse sandpaper can be used for grinding. The outer diameter value and the coaxiality condition need to be frequently detected in the polishing process, and correction is paid attention to. And the grinding speed is controlled, so that the surface temperature of the part is not too hot, and otherwise, the deviation of the measured size can be caused. And finally, polishing to a single edge with the allowance of 0.01 mm.
7) Preparing the fine turning repair part of the screw rod obtained in the step 6) for manual grinding repair, designing and manufacturing a special manual grinding sleeve, and processing an inner sleeve of the grinding sleeve by paying attention to guarantee the size precision of an inner hole: the material of the grinding sleeve is brass H62, and the size is restored to 0.003mm through the grinding sleeve, so that the coaxiality is ensured to reach 0.005 mm.
8) Manually grinding and repairing the finish turning repaired part of the screw rod by using the grinding sleeve obtained in the step 7), mounting the grinding sleeve, and injecting grinding sand by using an injector. The screw is screwed with a certain force without being too tight. And rotating the main shaft of the machine tool, holding the grinding sleeve by hand, and grinding back and forth in the brush plating area. And (4) paying attention to multiple measurements, detecting the outer diameter value and the coaxiality condition and mastering the forced hand feeling. And the grinding speed is controlled to ensure that the surface temperature of the part is not too hot. When the grinding is carried out until the margin of one side is 0.005mm, stopping the grinding, and carrying out 'temperature setting'. The grinding part needs heat dissipation, the temperature needs to be reduced, and the temperature is balanced with the room temperature, so the micron-scale precision can be measured accurately. The "constant temperature" takes about 2 hours. The outside diameter was measured after "temperature setting" and recorded. And finding the marked lead screw high point, and marking the opposite brush plating surface. And continuously feeding the grinding sleeve without rotating the main shaft, and applying a certain force on the marking surface to perform local grinding. And the grinding is stopped when the grinding reaches 0.004mm, so that the influence of the jumping quantity of the main shaft of the machine tool can be eliminated to a certain extent. And (4) mounting a grinding sleeve, repeating the grinding process, increasing the measuring frequency, reducing the grinding speed, and finally performing a 'temperature fixing' process before the grinding speed reaches a zero limit. After reaching the size (zero limit of size), the surface roughness is better without dimensional change by polishing with 1000-mesh sandpaper. Finally, the repairing precision of the ball screw reaches 0.002mm, and the coaxiality reaches 0.005 mm.
9) And (4) detaching the repair screw rod obtained in the step 8) from the lathe and the repair tool, and protecting.
The utility model discloses the outer loop is fixed and play the supporting role's outer loop with lathe main shaft through-hole, has ensured holistic rigidity of frock and intensity, is favorable to the lead screw to adjust for the axiality of through-hole lathe main shaft centre bore.
Although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the above-mentioned method and technical contents to make possible changes and modifications to the technical solution of the present invention without departing from the spirit and scope of the present invention, therefore, any simple modification, equivalent changes and modifications made to the above embodiments by the technical substance of the present invention all belong to the protection scope of the technical solution of the present invention.
Claims (5)
1. The tool for repairing the additive of the key parts of the equipment is characterized by comprising an outer ring and an inner ring, wherein the outer ring is fixed with a spindle hole of a machine tool and plays a supporting role, the inner ring is a three-petal aluminum ring playing a role in clamping and adjusting a screw rod, the radian of each petal of the inner ring is 110-120 degrees, and the petal spacing is 2-5 mm; 3 groups of ball head adjusting screws are designed between the inner ring aluminum ring and the outer ring of the outer ring, are in point contact with the aluminum ring, and can change the position of the central point of the screw rod through the three adjusting screws.
2. The tool for repairing the additive material of the key part of the equipment as claimed in claim 1, wherein the outer ring is of an upper layer circular open hole structure and a lower layer circular open hole structure and is used for being connected with a through hole of a lathe spindle in a matched mode and supporting the inner ring.
3. The tool for repairing the additive material of the key part of the equipment as claimed in claim 1, wherein the hardness HRC of the inner ring is lower than 20 and lower than the surface hardness of the lead screw.
4. The tool for repairing the additive of the key part of the equipment as claimed in claim 1, wherein the coaxiality of the diameter central points of the lead screw at the two ends of the through hole of the machine tool is adjusted by adjusting the ball adjusting screws of the two groups of center adjusting tools at the two ends, so that the radial circular runout of the two sides is finally ensured to be less than 0.003mm, and the coaxiality of the whole lead screw and the worn part in the rotation process of the main shaft of the machine tool is ensured to be within 0.005 mm.
5. The tool for repairing the additive of the key part of the equipment according to claim 1, wherein the inner diameter of the inner ring is 0.03-0.05 mm larger than the inner diameter of the lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020705292.XU CN212794097U (en) | 2020-04-30 | 2020-04-30 | Material increase repairing tool for key parts of equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020705292.XU CN212794097U (en) | 2020-04-30 | 2020-04-30 | Material increase repairing tool for key parts of equipment |
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| Publication Number | Publication Date |
|---|---|
| CN212794097U true CN212794097U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020705292.XU Active CN212794097U (en) | 2020-04-30 | 2020-04-30 | Material increase repairing tool for key parts of equipment |
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| CN (1) | CN212794097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114406914A (en) * | 2022-01-07 | 2022-04-29 | 河南顺达新能源科技有限公司 | Tool for quickly repairing crankshaft |
-
2020
- 2020-04-30 CN CN202020705292.XU patent/CN212794097U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114406914A (en) * | 2022-01-07 | 2022-04-29 | 河南顺达新能源科技有限公司 | Tool for quickly repairing crankshaft |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Mei Ke Inventor after: Han Miaoling Inventor after: Wang Guodong Inventor after: Zhang Mengmeng Inventor after: Gu Chao Inventor after: Du Xinghua Inventor after: Deng Linwei Inventor after: Xizhiming Inventor before: Mei Ke Inventor before: Han Miaoling Inventor before: Wang Guodong Inventor before: Zhang Mengmeng Inventor before: Gu Chao Inventor before: Du Xinghua Inventor before: Deng Linwei Inventor before: Xizhiming |
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| CB03 | Change of inventor or designer information |