CN213902206U - Parallelism detection device for crankshaft - Google Patents
Parallelism detection device for crankshaft Download PDFInfo
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- CN213902206U CN213902206U CN202023175917.5U CN202023175917U CN213902206U CN 213902206 U CN213902206 U CN 213902206U CN 202023175917 U CN202023175917 U CN 202023175917U CN 213902206 U CN213902206 U CN 213902206U
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- lead screw
- crankshaft
- base
- positioning
- downwards
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Abstract
The utility model relates to a parallelism detection device for a crankshaft, which comprises a base and a portal frame, wherein two V-shaped supporting blocks for supporting a main journal of the crankshaft are fixedly arranged on the base, the two V-shaped supporting blocks are arranged opposite to each other at intervals, the base is also provided with a transverse positioning mechanism for positioning the connecting rod journal of the crankshaft, a longitudinal positioning mechanism for positioning a main journal of the crankshaft is arranged on the portal frame, a lead screw box is fixedly arranged on the portal frame, a lead screw is rotatably arranged in the lead screw box through a bearing, a first motor is fixedly arranged on the outer side of the lead screw box, the lower end of the screw rod box is provided with a long hole along the length direction of the screw rod, the screw rod is screwed and matched with a nut, the nut is fixedly provided with a vertically arranged detection cylinder downwards through a sliding block, and a piston rod of the detection cylinder is fixedly provided with a dial indicator downwards through a mounting seat. The utility model has the advantages of simple structure, convenient use and low cost.
Description
Technical Field
The utility model relates to a production and processing technology field of bent axle especially relates to a depth of parallelism detection device for bent axle.
Background
The crankshaft is the most important component in the engine. It takes the force from the connecting rod and converts it into torque to be output by the crankshaft and drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work uniformly and balance well.
In the production and processing process of the crankshaft, the main journal and the connecting rod journal need to be connected, and the parallelism of the main journal and the connecting rod journal needs to be ensured, so that after the assembly is completed, the parallelism of the axes of the main journal and the connecting rod journal needs to be detected, and a special detection mechanism does not exist at present.
Disclosure of Invention
To the not enough of above-mentioned prior art, the technical problem that this patent application will solve provides a simple structure, convenient to use, parallelism detection device for the bent axle with low costs.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a parallelism detection device for a crankshaft comprises a base and a portal frame, wherein two V-shaped supporting blocks for supporting a main journal of the crankshaft are fixedly installed on the base, the two V-shaped supporting blocks are arranged right opposite to each other at intervals, two compression cylinders are fixedly installed on the portal frame downwards, piston rods of the compression cylinders are arranged right opposite to the V-shaped supporting blocks downwards and are fixedly provided with pressing blocks, a transverse positioning mechanism for positioning a connecting rod journal of the crankshaft is further installed on the base, a longitudinal positioning mechanism for positioning the main journal of the crankshaft is installed on the portal frame, a lead screw box is fixedly installed on the portal frame, a lead screw is rotatably installed in the lead screw box through a bearing, a first motor is fixedly installed on the outer side of the lead screw box, an output shaft of the first motor penetrates through the lead screw box to be fixedly connected with one end of the lead screw, and a long hole is formed in the lower end of the lead screw box along the length direction of the lead screw, the screw rod is screwed and matched with a nut, the nut is downwards fixedly provided with a sliding block which is in sliding fit with the strip hole, the sliding block is downwards fixedly provided with a vertically arranged detection cylinder, a piston rod of the detection cylinder is downwards fixedly provided with a dial indicator through a mounting seat, and a pointer of the dial indicator is downwards arranged.
The transverse positioning mechanism comprises two positioning plates which are oppositely arranged, the positioning plates are fixedly arranged on the sliding seat through a support, and a power mechanism for driving the sliding seat to move synchronously is arranged on the base.
The power mechanism comprises a groove arranged in the base, an upper end opening of the groove is formed, a positive lead screw and a negative lead screw are rotatably arranged in the groove through bearings, the positive lead screw and the negative lead screw are opposite in rotating direction from the middle to two ends, the positive lead screw and the negative lead screw are screwed and matched with a nut block, the upper end of the nut block is fixedly connected with the sliding seat, a second motor is arranged on the base, and an output shaft of the second motor penetrates through the base and one end of the positive lead screw and the negative lead screw are fixedly connected.
The longitudinal positioning mechanism comprises a positioning cylinder fixedly mounted on the portal frame, and a piston rod of the positioning cylinder is opposite to the vertical plate and fixedly mounted on the vertical plate.
Wherein, the lower end of the pressing block is provided with a V-shaped notch.
The utility model has the advantages of simple structure, convenient use and low cost.
Drawings
Fig. 1 is a schematic structural view of a parallelism detecting device for a crankshaft of the present invention.
Fig. 2 is a front view of fig. 1.
FIG. 3 is a cross-sectional view of the lateral positioning mechanism.
Fig. 4 is a sectional view of the lead screw box.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in fig. 1-4, a parallelism detection device for a crankshaft comprises a base 1 and a portal frame 2, wherein two V-shaped support blocks 3 for supporting a main journal of the crankshaft are fixedly installed on the base, the two V-shaped support blocks are arranged right opposite to each other at intervals, two hold-down cylinders 4 are fixedly installed downwards on the portal frame, piston rods of the hold-down cylinders are arranged right opposite to the V-shaped support blocks downwards and are fixedly provided with press blocks 5, the base is also provided with a transverse positioning mechanism for positioning a connecting rod journal of the crankshaft, the portal frame is provided with a longitudinal positioning mechanism for positioning the main journal of the crankshaft, the portal frame is fixedly provided with a lead screw box 6, a lead screw 7 is rotatably installed in the lead screw box through a bearing, a first motor 8 is fixedly installed on the outer side of the lead screw box, and an output shaft of the first motor passes through the lead screw box and is fixedly connected with one end of the lead screw, the lower extreme of lead screw case is provided with rectangular hole along lead screw length direction, the cooperation of rotating the screw top is connected has nut 9, the downward fixed mounting of nut has the slider of sliding fit in rectangular downthehole, the downward fixed mounting of slider has the detection cylinder 10 of vertical setting, the piston rod of detecting the cylinder is downward through mount pad fixed mounting has amesdial 11, the pointer of amesdial sets up downwards.
Like this, place the main journal of bent axle on V type supporting shoe, the direction of adjustment bent axle simultaneously, make the rod journal of bent axle set up downwards, utilize the position of longitudinal positioning mechanism adjustment bent axle, utilize the position of the rod journal of transverse positioning mechanism adjustment bent axle, make the rod journal of bent axle be located the pointer below the amesdial, the piston rod that compresses tightly the cylinder stretches out downwards and drives the briquetting and compress tightly the main journal of bent axle, later the piston rod that detects the cylinder stretches out and drives amesdial downstream, make the pointer contact with the rod journal of bent axle, later first motor starts, drive the lead screw and rotate, it removes to drive detection cylinder and amesdial through nut and slider, detect the main journal of bent axle, whether the display scope of observing the amesdial is in qualified scope. The main journal of the crankshaft is compressed and positioned through the V-shaped supporting block and the pressing block, the coaxial and horizontal arrangement of the main journal of the crankshaft is guaranteed, and the parallelism of the main journal of the crankshaft and the connecting rod journal can be obtained only by detecting the levelness of the connecting rod journal.
The transverse positioning mechanism comprises two positioning plates 12 which are oppositely arranged, the positioning plates are fixedly arranged on a sliding seat 13 through a support, and a power mechanism for driving the sliding seat to move synchronously is arranged on the base. The power mechanism drives the sliding seat to move and drives the positioning plate to move, and the connecting rod journal of the crankshaft is positioned at the lowest end by utilizing the clamping force.
Wherein, power unit is including setting up the recess in the base, the upper end opening of recess sets up, install positive and negative lead screw 14 through the bearing rotation in the recess, positive and negative lead screw is opposite along the rotation at middle to both ends, positive and negative lead screw top spin connects the cooperation to have nut piece 15, the upper end of nut piece with slide fixed connection, install second motor 16 on the base, the output shaft of second motor passes the base with positive and negative lead screw's one end fixed connection. The second motor drives the positive and negative screw rods to rotate, and the sliding seats are driven by the nut blocks to be close to or far away from each other synchronously, so that the connecting rod shaft necks of the crankshafts are positioned better.
The longitudinal positioning mechanism comprises a positioning cylinder 17 fixedly mounted on the portal frame, and a piston rod of the positioning cylinder is arranged opposite to the vertical plate 18 and fixedly mounted on the vertical plate. The positioning cylinder drives the vertical plate to move, so that the connecting rod journal of the crankshaft is located in a detection range, and the pointer is prevented from colliding with the main journal.
Wherein, the lower end of the pressing block is provided with a V-shaped notch. The clamping force and the clamping precision are improved.
The principle is as follows:
the main journal of the crankshaft is placed on the V-shaped supporting block, the direction of the crankshaft is adjusted simultaneously, the connecting rod journal of the crankshaft is arranged downwards, the position of the crankshaft is adjusted by the aid of the longitudinal positioning mechanism, the position of the connecting rod journal of the crankshaft is adjusted by the aid of the transverse positioning mechanism, the connecting rod journal of the crankshaft is located below a pointer of the dial indicator, a piston rod of the compression cylinder stretches downwards to drive the pressing block to compress the main journal of the crankshaft, the piston rod of the detection cylinder stretches out to drive the dial indicator to move downwards, the pointer is in contact with the connecting rod journal of the crankshaft, then the first motor is started, the screw rod is driven to rotate, the detection cylinder and the dial indicator are driven to move through the nut and the sliding block, the main journal of the crankshaft is detected, and whether the indicating range of the dial indicator is in a qualified range is observed. The main journal of the crankshaft is compressed and positioned through the V-shaped supporting block and the pressing block, the coaxial and horizontal arrangement of the main journal of the crankshaft is guaranteed, and the parallelism of the main journal of the crankshaft and the connecting rod journal can be obtained only by detecting the levelness of the connecting rod journal.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.
Claims (5)
1. A parallelism detection device for a crankshaft is characterized by comprising a base and a portal frame, wherein two V-shaped supporting blocks for supporting a main journal of the crankshaft are fixedly installed on the base, the two V-shaped supporting blocks are arranged right opposite to each other at intervals, two compression cylinders are fixedly installed downwards on the portal frame, piston rods of the compression cylinders are arranged right opposite to the V-shaped supporting blocks downwards and fixedly provided with pressing blocks, a transverse positioning mechanism for positioning a connecting rod journal of the crankshaft is further installed on the base, a longitudinal positioning mechanism for positioning the main journal of the crankshaft is installed on the portal frame, a lead screw box is fixedly installed on the portal frame, a lead screw is rotatably installed in the lead screw box through a bearing, a first motor is fixedly installed on the outer side of the lead screw box, and an output shaft of the first motor penetrates through the lead screw box to be fixedly connected with one end of the lead screw, the lower extreme of lead screw case is provided with rectangular hole along lead screw length direction, it has the nut to connect the cooperation soon on the lead screw, the downward fixed mounting of nut has the slider of sliding fit in rectangular downthehole, the slider fixed mounting downwards has the detection cylinder of vertical setting, the piston rod that detects the cylinder has the amesdial downwards through mount pad fixed mounting, the pointer of amesdial sets up downwards.
2. The parallelism detecting device according to claim 1, wherein the transverse positioning mechanism comprises two positioning plates disposed opposite to each other, the positioning plates are fixedly mounted on the slide base through a bracket, and the base is provided with a power mechanism for driving the slide base to move synchronously.
3. The parallelism detecting device for the crankshaft according to claim 2, wherein the power mechanism comprises a groove arranged in a base, the groove is provided with an opening at the upper end, a positive lead screw and a negative lead screw are rotatably arranged in the groove through a bearing, the rotation directions of the positive lead screw and the negative lead screw are opposite along the middle direction and the two ends, a nut block is screwed on the positive lead screw and the negative lead screw, the upper end of the nut block is fixedly connected with the sliding seat, a second motor is arranged on the base, and an output shaft of the second motor penetrates through the base and is fixedly connected with one end of the positive lead screw and the negative lead screw.
4. The parallelism detection device for the crankshaft according to claim 3, wherein the longitudinal positioning mechanism comprises a positioning cylinder fixedly mounted on the gantry, and a piston rod of the positioning cylinder is arranged opposite to the vertical plate and is fixedly mounted with the vertical plate.
5. The parallelism detecting device according to claim 4, wherein the lower end of the press block has a V-shaped notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023175917.5U CN213902206U (en) | 2020-12-25 | 2020-12-25 | Parallelism detection device for crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023175917.5U CN213902206U (en) | 2020-12-25 | 2020-12-25 | Parallelism detection device for crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213902206U true CN213902206U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023175917.5U Expired - Fee Related CN213902206U (en) | 2020-12-25 | 2020-12-25 | Parallelism detection device for crankshaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN213902206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509032A (en) * | 2022-01-16 | 2022-05-17 | 贵阳瑞极精密测量有限公司 | Crankshaft detection device |
-
2020
- 2020-12-25 CN CN202023175917.5U patent/CN213902206U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509032A (en) * | 2022-01-16 | 2022-05-17 | 贵阳瑞极精密测量有限公司 | Crankshaft detection device |
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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: 20210806 Termination date: 20211225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |