CN219402677U - Gear sleeve machining clamp - Google Patents

Gear sleeve machining clamp Download PDF

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Publication number
CN219402677U
CN219402677U CN202320723435.3U CN202320723435U CN219402677U CN 219402677 U CN219402677 U CN 219402677U CN 202320723435 U CN202320723435 U CN 202320723435U CN 219402677 U CN219402677 U CN 219402677U
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CN
China
Prior art keywords
gear sleeve
sliding
inner hole
shaft section
pull shaft
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Active
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CN202320723435.3U
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Chinese (zh)
Inventor
米久雄
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Chongqing Weisi Precision Machinery Co ltd
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Chongqing Weisi Precision Machinery Co ltd
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

The utility model discloses a gear sleeve machining clamp which comprises a clamp body, a pull shaft, a pressing plate, a locking nut, an inner hole tensioning assembly and a hydraulic cylinder, wherein the pull shaft is arranged on the clamp body; the method is characterized in that: the clamp body is provided with a step surface, a middle shaft section and an upper shaft section; the pull shaft is in sliding fit with the central hole of the clamp body; the upper part of the pull shaft sequentially penetrates out of the clamp body and the pressing plate and then is in threaded fit with the locking nut, and the output end of the hydraulic cylinder is fixedly connected with the lower end of the pull shaft; the inner hole tensioning assembly comprises a plurality of sliding press blocks; each sliding press block is in sliding fit with the first shaft section and distributed along the circumferential direction of the first shaft section, the inner end of each sliding press block extends into the central hole and is provided with an inclined wedge part, and the other end of each sliding press block extends out of the first shaft section and is provided with a pressing part; the middle part of the pull shaft is provided with an inclined wedge groove which is used for being matched with the inclined wedge part. The utility model can be used for positioning the gear sleeve during finish machining of the tooth part, can improve clamping precision and reduce radial runout error and tooth direction error during gear shaping.

Description

Gear sleeve machining clamp
Technical Field
The utility model belongs to a gear sleeve machining clamp.
Background
Referring to fig. 1, a gear sleeve is shown having a sleeve portion, a ring gear portion and an inner bore. Fig. 2 shows a conventional gear sleeve processing jig. In FIG. 2, the gear sleeve is positioned by an inner hole (N-3) and an end face, the inner hole (N-3) of the gear sleeve is in tolerance positioning fit with the outer diameter of the mandrel (M-1) by adopting H6/H5, the upper nut M-3 is screwed down, and the gear sleeve is tightly pressed through the opening pad M-2. When the product is actually processed, the radial circle runout error of the gear ring part of the gear shaping is found to be 0.07-0.10 mm, even 0.15mm, and the gear direction error is found to be 0.02-0.05 mm. When the process requires that the radial runout error of the gear ring part is less than or equal to 0.05mm, the tooth direction error is less than or equal to 0.01mm, and the radial runout error and the tooth direction error have different degrees of out-of-tolerance phenomenon during gear shaping. And when the diameter of the gear sleeve is larger, the positioning gap between the mandrel and the gear inner hole is more difficult to eliminate, and the higher precision processing requirement of the tooth direction and the radial jump of the processing gear ring part is also difficult to ensure.
Further, if the conventional elastic sleeve is deformed and pressed against the inner hole of the gear sleeve (refer to patent document CN105364199 a), the elastic sleeve is likely to be deformed due to fatigue and is likely to be pressed, and the elastic sleeve is rotated and is not stable.
Disclosure of Invention
The utility model aims to provide a gear sleeve processing clamp, which solves the problems that the existing gear sleeve clamp has radial runout error and tooth direction error out of tolerance during gear shaping and cannot meet the technological requirements of higher precision.
In order to achieve the above purpose, the utility model provides a gear sleeve processing clamp, which comprises a clamp body, a pull shaft, a pressing plate, a lock nut, an inner hole tensioning assembly and a hydraulic cylinder; the method is characterized in that: the clamp body is provided with a step surface for supporting the first end surface of the gear sleeve, a middle shaft section for positioning and matching with the inner hole of the gear sleeve and an upper shaft section for mounting the inner hole tensioning assembly; the pull shaft is in sliding fit with the central hole of the clamp body; the upper part of the pull shaft penetrates out of the pressing plate and then is in threaded fit with the locking nut, and the pressing plate is used for pressing the second end face of the gear sleeve; the output end of the hydraulic cylinder is fixedly connected with the lower end of the pull shaft; the inner hole tensioning assembly comprises a plurality of sliding press blocks; each sliding press block is in sliding fit with the upper shaft section along the radial direction and distributed along the circumferential direction, the inner end of each sliding press block extends into the central hole and is provided with an inclined wedge part, and the other end of each sliding press block extends out of the upper shaft section and is provided with a pressing part; the middle part of the pull shaft is provided with an inclined wedge groove which is used for being matched with the inclined wedge part.
By adopting the scheme, the center shaft section of the clamp body is matched with the inner hole of the gear sleeve in a positioning way to enable the center of the gear sleeve to be positioned, the inclined wedge groove of the pull shaft is matched with the inclined wedge part of the sliding press block when the hydraulic cylinder pulls the pull shaft downwards, and the pressing part of the sliding press block presses the inner hole wall of the gear sleeve after the sliding press block slides outwards. The sliding press blocks are circumferentially distributed along the pull shaft, and the pressing parts of the sliding press blocks circumferentially press the inner hole wall of the gear sleeve, so that the gear sleeve is concentric with the middle shaft section of the clamp body, the positioning gap between the middle shaft section and the inner hole of the gear sleeve is eliminated, the tooth direction and the radial jump of a machined gear can be ensured, and the technical requirements that the radial jump error of a gear ring is less than or equal to 0.05mm and the tooth direction error is less than or equal to 0.01mm during machining can be met.
Because the inclined wedge groove of the pull shaft is matched with the inclined wedge part of the sliding press block, each sliding press block cannot rotate when sliding on the upper shaft section, so that the sliding press blocks can be ensured to be in stable pressing contact with the inner hole wall of the gear sleeve, and the position precision and the reliability during pressing can be ensured.
Because the upper part of the pull shaft sequentially penetrates out of the clamp body and the pressing plate and then is in threaded fit with the locking nut, the pressing plate can press the second end face of the gear sleeve by rotating the locking nut, and axial runout and looseness of the gear sleeve can be avoided.
Further, the pressing part is provided with an arc-shaped pressing surface which is in matched contact with the inner hole wall of the gear sleeve, so that the effective contact area is enlarged, and the pressing force can be increased.
Preferably, the middle shaft section and the inner hole of the gear sleeve are in H6/H5 tolerance fit.
Further, the inner hole tensioning assemblies are two and are distributed at intervals up and down. The inner tensioning of the upper and lower parts of the inner hole wall of the gear sleeve can be realized, the gear sleeve can be prevented from swinging or deflecting during processing, and the processing precision is improved.
Preferably, the length of the middle shaft section is 10-20mm. The positioning fit of the effective length can be ensured, and the installation requirement of the inner hole tensioning assembly is met.
Preferably, the pressing plate is provided with a U-shaped opening. The pressing plate is convenient to laterally take out, and the loading and unloading are more convenient.
Further, the inner hole tensioning assembly further comprises a limiting ring, and the limiting ring is fixedly sleeved on the middle shaft section and used for limiting the sliding pressing block when the sliding pressing block slides outwards. The sliding pressing block can be prevented from falling off when the gear sleeve is taken out after machining is finished.
The utility model has the beneficial effects that:
the gear positioning and clamping device can be used for positioning and clamping gears in gear part finish machining, can improve clamping precision, reduce radial runout error and tooth direction error during gear shaping, and can meet the technical requirements that the radial runout error of a gear ring is less than or equal to 0.05mm and the tooth direction error is less than or equal to 0.01mm during machining;
secondly, the inclined wedge groove of the pull shaft is matched with the inclined wedge part of the sliding press block, so that each sliding press block cannot rotate when sliding on the upper shaft section, stable compaction contact between each sliding press block and the inner hole wall of the gear sleeve can be ensured, and the position precision and reliability during compaction can be ensured;
thirdly, the upper part of the pull shaft sequentially penetrates out of the clamp body and the pressing plate and then is in threaded fit with the locking nut, so that the pressing plate can press the second end surface of the gear sleeve by rotating the locking nut, and axial runout and looseness of the gear sleeve can be avoided;
and fourthly, the utility model adopts two inner hole tensioning assemblies and can simultaneously carry out inner circumferential tensioning on the upper and lower parts of the inner hole wall of the gear sleeve, thereby avoiding the swing or deflection of the gear sleeve during processing, improving the processing precision and particularly greatly reducing the gear direction error.
Drawings
Fig. 1 is a perspective view of a conventional gear sleeve.
Fig. 2 is a schematic structural view of a conventional gear sleeve processing jig.
Fig. 3 is a perspective view of a gear case machining jig of the present utility model when the gear case is not clamped.
Fig. 4 is a perspective view of the clamp body.
Fig. 5 is a perspective view of the pull shaft.
Fig. 6 is a perspective view of the sliding compact.
Fig. 7 is a schematic structural view of a gear sleeve processing fixture of the present utility model when clamping a gear sleeve and in a positioning and pressing state.
Fig. 8 is a perspective view of a gear sleeve machining fixture of the present utility model in a positioning and compression state while clamping a gear sleeve.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
examples: referring to fig. 3-8, a gear sleeve machining clamp comprises a clamp body 1, a pull shaft 2, a pressing plate 3, a locking nut 4, an inner hole tensioning assembly 5 and a hydraulic cylinder 6.
Referring to fig. 7, the fixture body 1 is provided with a step surface 1-1 for supporting a first end surface N-1 of the gear sleeve N, a middle shaft section 1-2 for positioning and matching with an inner hole N-3 of the gear sleeve N, and an upper shaft section 1-3 for installing an inner hole tensioning assembly 5.
See fig. 7, wherein the pull shaft 2 is slidably engaged with the central hole 1-4 of the clamp body 1; preferably, the middle shaft section 1-2 and the inner hole N-3 of the gear sleeve N are in H6/H5 tolerance fit. The center shaft section 1-2 of the clamp body 1 is matched with the inner hole N-3 of the gear sleeve N in a positioning way so as to enable the center of the gear sleeve N to be positioned.
Referring to fig. 7, the upper part of the pull shaft 2 sequentially passes through the clamp body 1 and the pressing plate 3 upwards and then is in threaded fit with the lock nut 4, and the pressing plate 3 is used for pressing the second end face N-2 of the gear sleeve N; the output end of the hydraulic cylinder 6 is fixedly connected with the lower end of the pull shaft 2.
Referring to fig. 3, specifically, the upper portion of the pull shaft 2 is an externally threaded rod section 2-2.
Referring to fig. 7, specifically, a cylinder mounting hole 1-5 is provided at the lower end of a center hole 1-4 of the clamp body 1, and the hydraulic cylinder 6 is fixed in the cylinder mounting hole 1-5 in the clamp body 1.
Referring to fig. 7, the inner hole tensioning assembly 5 comprises a plurality of sliding press blocks and limiting rings 5-2; each sliding pressing block 5-1 is in sliding fit with the upper shaft section 1-3 along the radial direction and is distributed along the circumferential direction. Referring to fig. 3-4, in particular, the upper shaft section 1-3 is provided with a plurality of radial slide holes 1-31 distributed along the circumferential direction. One sliding pressing block 5-1 is slidably connected in each radial sliding hole 1-31.
See fig. 7, wherein the limiting ring 5-2 is fixedly sleeved on the middle shaft section 1-2 and is used for limiting the sliding pressing block 5-1 when sliding outwards. The sliding block 5-1 can be prevented from falling off when sliding outwards after the gear sleeve N is taken out after the processing is finished.
Referring to FIG. 7, the stop collar 5-2 is preferably secured to the outer wall of the bottom bracket section 1-2 by bolts 5-3. During assembly, the sliding press blocks 5-1 are inserted into the middle shaft section 1-2, and then the limiting rings 5-2 are sleeved outside and fixed on the middle shaft section 1-2, so that the sliding press blocks 5-1 can be limited at the same time, and meanwhile, the assembly is convenient.
Referring to fig. 6 and 7, the inner end of the sliding pressing block 5-1 extends into the central hole 1-4 and is provided with an inclined wedge part 5-11, and the other end of the sliding pressing block 5-1 extends out of the upper shaft section 1-3 and is provided with a pressing part 5-12; the middle part of the pull shaft 2 is provided with an inclined wedge groove 2-1 which is used for being matched with the inclined wedge part 5-11.
Referring to fig. 6 and 7, further, the pressing portion 5-12 has thereon an arcuate pressing surface 5-121. The arc-shaped compression joint surfaces 5-121 are in matched contact with the inner hole wall of the gear sleeve N, so that the effective contact area is enlarged, and the compression force can be increased.
Referring to fig. 6 and 7, further, the inner hole tensioning assembly 5 has two and is arranged at intervals. The inner tensioning of the upper and lower parts of the inner hole wall of the gear sleeve N can be realized, the gear sleeve N can be prevented from swinging or deflecting during processing, the processing precision is improved, and particularly, the gear direction error can be greatly reduced.
In combination with fig. 3-8, specifically, each group of the inner hole tensioning assembly 5 has 8 sliding press blocks 5-1, and the pull shaft 2 has two groups of inclined wedge grooves 2-1, and each group has 8 inclined wedge grooves. The two groups of inclined wedge grooves 2-1 on the pull shaft 2 are matched with the sliding pressing blocks 5-1 of the two groups of inner hole tensioning assemblies 5 in a one-to-one correspondence manner.
Referring to FIG. 7, the bottom bracket segments 1-2 are preferably 10-20mm in length. The positioning fit of the effective length can be ensured, and the installation requirement of the inner hole tensioning assembly 5 is met.
Referring to fig. 3, preferably, the pressing plate 3 is provided with a U-shaped opening 3-1. The pressing plate 3 is conveniently taken out laterally, and the assembly and the disassembly are more convenient.
The embodiment operates as follows during clamping:
s1, sleeving a gear sleeve N to be processed on a clamp body 1, enabling a first end face N-1 of the gear sleeve N to be in surface contact fit with a step face 1-1 and horizontally supporting, and enabling an inner hole N-3 of the gear sleeve N to be in positioning fit (such as H6/H5 tolerance fit) with a middle shaft section 1-2;
s2, starting a hydraulic cylinder 6 to work, wherein the hydraulic cylinder 6 pulls down the pull shaft 2, and because two groups of inclined wedge grooves 2-1 on the pull shaft 2 are matched with sliding press blocks 5-1 of two groups of inner hole tensioning assemblies 5 one by one, the pressing parts 5-12 of the sliding press blocks 5-1 of the two groups of inner hole tensioning assemblies 5 simultaneously press the inner hole wall of the gear sleeve N along the circumferential direction and up and down;
s3, pressing the pressing plate 3 on the second end face N-2 of the gear sleeve N, penetrating the upper part (the threaded rod section 2-2) of the pull shaft 2 through the U-shaped opening 3-1 of the pressing plate 3 and matching with the locking nut 4, and pressing the pressing plate 3 on the second end face N-2 of the gear sleeve N by rotating the locking nut 4; the hydraulic cylinders 6 maintain pressure (including during the entire machining process) and pull the pull shaft 2 downward.
The utility model has the following characteristics and is analyzed as follows:
according to the utility model, as the middle shaft section 1-2 of the clamp body 1 is matched with the inner hole N-3 of the gear sleeve N in a positioning way, the center of the gear sleeve N is positioned, when the hydraulic cylinder 6 pulls the pull shaft 2 downwards, the inclined wedge groove 2-1 of the pull shaft 2 is matched with the inclined wedge part 5-11 of the sliding press block 5-1, and after the sliding press block 5-1 slides outwards, the pressing part 5-12 of the sliding press block 5-1 can press the inner hole wall of the gear sleeve N. The sliding press blocks 5-1 are circumferentially distributed along the pull shaft 2, and the pressing parts 5-12 of the sliding press blocks 5-1 circumferentially press the inner hole wall of the gear sleeve N, so that the gear sleeve N is concentric with the middle shaft section 1-2 of the clamp body 1, a positioning gap between the middle shaft section 1-2 and the inner hole of the gear sleeve N is eliminated, the tooth direction and radial jump of a machined gear can be ensured, and the technical requirements that the radial jump error of a gear ring is less than or equal to 0.05mm and the tooth direction error is less than or equal to 0.01mm during machining can be met. Therefore, the positioning device can be used for positioning the gear sleeve during finish machining of the tooth part, can improve clamping precision and reduce radial runout error and tooth direction error during gear shaping;
secondly, in the utility model, as the inclined wedge groove 2-1 of the pull shaft 2 is matched with the inclined wedge part 5-11 of the sliding press block 5-1, each sliding press block 5-1 cannot rotate when sliding on the upper shaft section 1-3, so that the stable compaction contact between each sliding press block 5-1 and the inner hole wall pressure of the gear sleeve N can be ensured, and the position precision and reliability during compaction can be ensured.
In addition, the upper part of the pull shaft 2 sequentially penetrates out of the clamp body 1 and the pressing plate 3 and then is in threaded fit with the locking nut 4, so that the pressing plate 3 can be pressed against the second end face N-2 of the gear sleeve N by rotating the locking nut 4, and the gear sleeve N can be prevented from axially jumping and loosening.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (7)

1. A gear sleeve machining clamp comprises a clamp body (1), a pull shaft (2), a pressing plate (3), a locking nut (4), an inner hole tensioning assembly (5) and a hydraulic cylinder (6); the method is characterized in that:
the fixture body (1) is provided with a step surface (1-1) for supporting a first end surface (N-1) of the gear sleeve (N), a middle shaft section (1-2) for being matched with an inner hole (N-3) of the gear sleeve (N) in a positioning way and an upper shaft section (1-3) for installing an inner hole tensioning assembly (5);
the pull shaft (2) is in sliding fit with the central hole (1-4) of the clamp body (1); the upper part of the pull shaft (2) penetrates out of the pressing plate (3) and then is in threaded fit with the locking nut (4), and the pressing plate (3) is used for pressing the second end face (N-2) of the gear sleeve (N); the output end of the hydraulic cylinder (6) is fixedly connected with the lower end of the pull shaft (2);
the inner hole tensioning assembly (5) comprises a plurality of sliding pressing blocks (5-1); each sliding pressing block (5-1) is in sliding fit with the upper shaft section (1-3) along the radial direction and is distributed along the circumferential direction, the inner end of each sliding pressing block (5-1) extends into the central hole (1-4) and is provided with an inclined wedge part (5-11), and the other end part of each sliding pressing block (5-1) extends out of the upper shaft section (1-3) and is provided with a pressing part (5-12);
the middle part of the pull shaft (2) is provided with an inclined wedge groove (2-1) which is used for being matched with the inclined wedge part (5-11).
2. A gear sleeve machining jig as claimed in claim 1, wherein: the compaction part (5-12) is provided with an arc-shaped compression joint surface (5-121).
3. A gear sleeve machining jig as claimed in claim 1, wherein: the middle shaft section (1-2) and the inner hole (N-3) of the gear sleeve (N) are in tolerance fit with each other by adopting H6/H5.
4. A gear sleeve machining jig as claimed in claim 1, wherein: the inner hole tensioning assemblies (5) are two and are distributed at intervals up and down.
5. A gear sleeve machining jig as claimed in claim 1, wherein: the length of the middle shaft section (1-2) is 10-20mm.
6. A gear sleeve machining jig as claimed in claim 1, wherein: the pressing plate (3) is provided with a U-shaped opening (3-1).
7. A gear sleeve machining jig according to any one of claims 1 to 5, wherein: the inner hole tensioning assembly (5) further comprises a limiting ring (5-2), and the limiting ring (5-2) is fixedly sleeved on the middle shaft section (1-2) and used for limiting the sliding pressing block (5-1) when the sliding pressing block slides outwards.
CN202320723435.3U 2023-04-04 2023-04-04 Gear sleeve machining clamp Active CN219402677U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320723435.3U CN219402677U (en) 2023-04-04 2023-04-04 Gear sleeve machining clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320723435.3U CN219402677U (en) 2023-04-04 2023-04-04 Gear sleeve machining clamp

Publications (1)

Publication Number Publication Date
CN219402677U true CN219402677U (en) 2023-07-25

Family

ID=87205613

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320723435.3U Active CN219402677U (en) 2023-04-04 2023-04-04 Gear sleeve machining clamp

Country Status (1)

Country Link
CN (1) CN219402677U (en)

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