CN210099748U - Grinding clamp for automobile crankshaft connecting rod journal - Google Patents
Grinding clamp for automobile crankshaft connecting rod journal Download PDFInfo
- Publication number
- CN210099748U CN210099748U CN201921088363.XU CN201921088363U CN210099748U CN 210099748 U CN210099748 U CN 210099748U CN 201921088363 U CN201921088363 U CN 201921088363U CN 210099748 U CN210099748 U CN 210099748U
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- connecting rod
- shaped
- clamp body
- rod journal
- grinding
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Abstract
The utility model discloses an automobile crankshaft connecting rod journal grinding clamp, which comprises a clamp body and a fixed plate, wherein the clamp body is in a U-shaped groove shape and is fixedly connected with the fixed plate with one end in a disc shape, and the fixed plate is provided with a connecting pin hole; the bottom and the side of the clamp body are provided with fastening screws, the fastening screws penetrate through the U-shaped groove wall, a V-shaped body is arranged in the clamp body, the position of the V-shaped body can be adjusted and fixed through the fastening screws, the two sides of the clamp body are fixedly connected with fixing seats, a gland is connected to the fixing seats through connecting bolts, the gland is in an arc-shaped inverted buckle mode and is arranged at the top of the U-shaped groove, and a pressing rod is arranged at the bottom of the. The utility model has simple structure; the manufacturing is convenient and fast, and a technical foundation can be laid for the smooth production of new products.
Description
Technical Field
The utility model relates to an automobile parts processing field especially relates to an automobile crankshaft connecting rod axle journal grinding anchor clamps.
Background
The crankshaft is an important rotating part of the engine and is a power source of the engine. After the connecting rod is installed, the up-and-down (reciprocating) motion of the piston can be changed into a circular motion. The crankshaft mainly has two important processing parts: main journals and connecting journals. The main journal is mounted on the cylinder block, the connecting rod journal is connected with the connecting rod big end hole, the connecting rod small end hole is connected with the cylinder piston, and the crank block mechanism is typical. The performance of the overall performance of the engine is directly affected by the quality of the crankshaft machining.
In the machining of crankshafts, progress is constantly being made both in the adoption of new techniques and in the improvement of the degree of automation. At present, most of the domestic old crankshaft production lines are composed of a common machine tool and a special machine tool, and the production efficiency and the automation degree are relatively low. The rough machining equipment generally adopts a multi-tool lathe to turn a crankshaft main journal and a connecting rod journal, the stability of the process quality is poor, large machining stress is easy to generate, and reasonable machining allowance is difficult to achieve. The finish machining generally adopts ordinary crankshaft grinders such as MQ8260 and the like to perform rough grinding, semi-finish grinding, finish grinding and polishing, and usually depends on manual operation. The popular technology for rough machining of the existing crankshaft is as follows: the main journal adopts a turning and drawing process and high-speed external milling, the connecting rod journal adopts high-speed external milling, the high-speed follow-up external milling is inclined, and dry cutting is completely adopted. When the connecting rod necks are ground in a follow-up mode, the crankshaft rotates by taking the main journal as an axis, and all the connecting rod necks are ground under one-time clamping. In the grinding process, the grinding head realizes reciprocating swing feeding and carries out grinding processing along with the eccentric rotating connecting rod neck. Due to the special shape of the crankshaft, a special fixture is needed to realize one-time positioning in the process.
SUMMERY OF THE UTILITY MODEL
The utility model provides a car bent axle connecting rod axle journal grinding anchor clamps can realize the location of bent axle in the grinding process.
The utility model discloses a realize through following technical scheme:
a grinding clamp for an automobile crankshaft connecting rod journal comprises a clamp body and a fixing plate, wherein the clamp body is in a U-shaped groove shape and is fixedly connected with the fixing plate with one disc-shaped end, and a connecting pin hole is formed in the fixing plate; the bottom and the side of the clamp body are provided with fastening screws, the fastening screws penetrate through the U-shaped groove wall, a V-shaped body is arranged in the clamp body, the position of the V-shaped body can be adjusted and fixed through the fastening screws, the two sides of the clamp body are fixedly connected with fixing seats, a gland is connected to the fixing seats through connecting bolts, the gland is in an arc-shaped inverted buckle mode and is arranged at the top of the U-shaped groove, and a pressing rod is arranged at the bottom of the.
Preferably, the bottom of the V-shaped body and one side contacted with the fastening screw are both provided with a cushion block.
Preferably, the bottom of the gland is provided with a brass shim plate.
Preferably, the clamp body and the fixing plate are integrally formed.
Preferably, one end of the gland is hinged with the fixed seat.
Preferably, the bottom of the V-shaped opening of the V-shaped body is provided with a rectangular notch.
Preferably, the fastening screws at the bottom of the clamp body are symmetrically distributed along the symmetry plane of the V-shaped body.
The utility model realizes one-time positioning work during crankshaft grinding, which can greatly improve the production efficiency on the whole, and because of the adjustment, the processing range is enlarged, and the condition of insufficient equipment can be solved; the machining precision can be effectively ensured, and a high-skill operator is not needed; the structure is simple; the manufacturing is convenient and fast, and a technical foundation can be laid for the smooth production of new products.
Drawings
Fig. 1 is a schematic top view of an automobile crankshaft connecting rod journal grinding fixture in an embodiment of the present invention.
The reference numbers are as follows:
1. the fixture body, 2, the fixed plate, 3, the connecting pin hole, 4, fastening screw, 5, the V-shaped body, 6, the fixing seat, 7, the connecting bolt, 8, the gland, 9, the depression bar, 10, the cushion, 11, the brass backing plate, 12, the opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the grinding clamp for the automobile crankshaft connecting rod journal comprises a clamp body 1 and a fixing plate 2, wherein the clamp body 1 is in a U-shaped groove shape and is fixedly connected with the fixing plate 2 with one disc-shaped end, and a connecting pin hole 3 is formed in the fixing plate 2; the bottom and the side of the clamp body 1 are provided with fastening screws 4, the fastening screws 4 penetrate through the U-shaped groove wall, a V-shaped body 5 is arranged in the clamp body 1, the positions of the V-shaped body 5 can be adjusted through the fastening screws 4 and are fixed, two sides of the clamp body 1 are fixedly connected with fixing seats 6, a gland 8 is connected onto the fixing seats 6 through connecting bolts 7, the gland 8 is in the shape of a circular arc and is reversely buckled at the top of the U-shaped groove, and a pressing rod 9 is arranged at the bottom of the center of.
In this embodiment, the bottom of the V-shaped body 5 and the side contacting with the fastening screw 4 are provided with a cushion block 10.
In this embodiment, the bottom of the gland 8 is provided with a brass shim plate 11.
In this embodiment, the clamp body 1 and the fixing plate 2 are integrally formed.
In this embodiment, one end of the pressing cover 8 is hinged to the fixing seat 6.
In this embodiment, a rectangular notch 12 is disposed at the bottom of the V-shaped opening of the V-shaped body 5.
In this embodiment, the fastening screws 4 at the bottom of the fixture body 1 are symmetrically distributed along the symmetry plane of the V-shaped body 5.
When the clamp is used specifically, a left clamp body and a right clamp body are generally used in a matched mode, and the left clamp body and the right clamp body 1 are fixed on main shafts in a headstock and a tailstock through positioning pins. Cushion blocks 10 below and on the side face of the V-shaped block are used for adjusting the central line of a workpiece, and finally a gland 8 is installed and a connecting bolt 7 is fixed.
During machining, the seventh main journal and the first main journal which are subjected to fine grinding are placed on the left V-shaped block and the right V-shaped block of the clamp, the axial lead of the first connecting rod journal or the sixth connecting rod journal is adjusted by a dial indicator to be positioned at the rotation center position of the grinding machine main shaft, then the crankshaft is clamped, the dividing disc is sleeved on the crankshaft pulley journal to enable one of 3 tooth surfaces to abut against the overturning block, and then the dividing disc is fixed on the pulley journal by using the hexagon socket head cap screw, so that the 1 st connecting rod journal and the 6 th connecting rod journal can be ground. When the journals of the 2 nd, 5 th, 3 rd and 4 th connecting rods are ground, the turning block is lifted, the crankshaft rotates clockwise for a certain angle (120 degrees) and then returns to the rotating crankshaft, the other tooth surface of the dividing plate abuts against the turning block, and then the crankshaft is clamped and ground. Since the 3 tooth surfaces of the dividing plate are divided by 120 degrees, the angle deviation of the connecting rod journal is ensured and the process requirement is met. Adjusting the parallel error of the shaft axis of the crankshaft connecting rod journal is realized by grinding a side cushion block 10; the adjustment of the radius of the rotation center of the crankshaft is completed by grinding the bottom cushion block 10; when processing the bent axle that turning radius is different, can realize through changing the bottom surface cushion 10 of different thickness. The specific process flow and principle of the index plate adjustment can refer to the prior art.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The grinding clamp for the automobile crankshaft connecting rod journal is characterized by comprising a clamp body and a fixing plate, wherein the clamp body is in a U-shaped groove shape and is fixedly connected with the fixing plate with one disc-shaped end, and a connecting pin hole is formed in the fixing plate; the bottom and the side of the clamp body are provided with fastening screws, the fastening screws penetrate through the U-shaped groove wall, a V-shaped body is arranged in the clamp body, the position of the V-shaped body can be adjusted and fixed through the fastening screws, the two sides of the clamp body are fixedly connected with fixing seats, a gland is connected to the fixing seats through connecting bolts, the gland is in an arc-shaped inverted buckle mode and is arranged at the top of the U-shaped groove, and a pressing rod is arranged at the bottom of the.
2. The grinding jig for the automobile crankshaft connecting rod journal as claimed in claim 1, wherein the bottom of the V-shaped body and a side contacting with the fastening screw are provided with spacers.
3. The grinding jig for the automobile crankshaft connecting rod journal according to claim 1, characterized in that a brass shim plate is provided at the bottom of the gland.
4. The grinding jig for the automobile crankshaft connecting rod journal as claimed in claim 1, wherein the jig body and the fixing plate are integrally formed.
5. The grinding jig for the automobile crankshaft connecting rod journal according to claim 1, wherein one end of the gland is provided to be hinged with the fixing seat.
6. The grinding fixture for the automobile crankshaft connecting rod journal as claimed in claim 1, wherein a rectangular notch is formed at the bottom of the V-shaped opening of the V-shaped body.
7. The grinding fixture for the automobile crankshaft connecting rod journal as claimed in claim 1, wherein the fastening screws at the bottom of the fixture body are symmetrically distributed along the symmetry plane of the V-shaped body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921088363.XU CN210099748U (en) | 2019-07-12 | 2019-07-12 | Grinding clamp for automobile crankshaft connecting rod journal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921088363.XU CN210099748U (en) | 2019-07-12 | 2019-07-12 | Grinding clamp for automobile crankshaft connecting rod journal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210099748U true CN210099748U (en) | 2020-02-21 |
Family
ID=69566727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921088363.XU Expired - Fee Related CN210099748U (en) | 2019-07-12 | 2019-07-12 | Grinding clamp for automobile crankshaft connecting rod journal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210099748U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113649871A (en) * | 2021-08-30 | 2021-11-16 | 罡阳轴研科技(灌云)有限公司 | Grinding clamp for motorcycle engine crankshaft |
-
2019
- 2019-07-12 CN CN201921088363.XU patent/CN210099748U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113649871A (en) * | 2021-08-30 | 2021-11-16 | 罡阳轴研科技(灌云)有限公司 | Grinding clamp for motorcycle engine crankshaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 Termination date: 20210712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |