CN211576128U - Piston measuring and positioning device - Google Patents
Piston measuring and positioning device Download PDFInfo
- Publication number
- CN211576128U CN211576128U CN202020268017.6U CN202020268017U CN211576128U CN 211576128 U CN211576128 U CN 211576128U CN 202020268017 U CN202020268017 U CN 202020268017U CN 211576128 U CN211576128 U CN 211576128U
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- piston
- push rod
- measuring
- anvil
- positioning device
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- 238000005259 measurement Methods 0.000 abstract description 23
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- 239000000523 sample Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a piston measurement positioning device, includes piston anchor clamps body and locating pin piece, the piston anchor clamps body has the survey anvil workstation, be provided with the support bar that is the v style of calligraphy and arranges on the survey anvil workstation, the locating pin piece has benchmark locating piece and locating pin, and the piston has the piston pinhole, the locating pin stretches into in the piston pin hole, the medial surface of benchmark locating piece and the lateral wall contact location of surveying the anvil workstation, and the locating pin promotes the piston to follow the upper surface of surveying the anvil workstation remove and with the support bar cooperation that the v style of calligraphy was arranged is used for right the piston carries out position alignment, makes the central axis of piston pinhole with the central symmetry line of the support bar that the v style of calligraphy was arranged is perpendicular. The utility model discloses a piston measuring and positioning device adopts V style of calligraphy support bar and locating pin piece mating reaction to carry out three point location to the piston, under the cooperation of V style of calligraphy support bar and locating pin piece, can be used to fix a position the piston of multiple different model sizes, and the commonality is strong and practices thrift the cost.
Description
Technical Field
The utility model belongs to the technical field of the piston positioner, especially, relate to a device that is arranged in piston measurement process to advance line location to the piston.
Background
The piston is one of the key parts commonly used in the engine, and bears alternating mechanical load and thermal load during operation, and the operating condition is relatively severe. Therefore, the measurement of the relevant dimensions of the piston is one of the important concerns.
The piston is measured by a three-coordinate measuring machine, and the diameter, roundness, straightness, coaxiality, compression height and other dimensions and form and position tolerance of a piston pin hole are mainly measured. However, because the measurement reference is the piston pin hole, the pin hole axis is required to be parallel to the three-coordinate probe axis in each measurement and positioning, as shown in fig. 1, when the three-coordinate probe pin rod is not parallel to the piston pin hole axis and interferes with the piston pin hole axis in the measurement, the measurement result is affected.
At present, a common positioning and clamping mode for measurement is to position by utilizing an inner circle of a piston skirt part spigot, customize an outer ring gauge corresponding to the piston skirt part spigot, place the piston skirt part spigot on the outer ring gauge, approach a piston pin hole through a three-coordinate probe, and align in a visual comparison mode to ensure the parallel relation of the probe and the pin hole axis, so as to avoid positioning interference; and because the piston material is usually aluminium parts, can not effectively pass through magnetic force and adsorb, still need to place a pouring weight on the piston at last, rely on the mode of applying gravity to guarantee that the piston location is firm.
The existing positioning and clamping mode for piston measurement can avoid the problem of measurement interference to a certain extent, but in batch measurement, the mode has low efficiency, and the interference problem cannot be completely avoided due to visual alignment; the pistons of different models also need the excircle ring gauges of different diameters to fix a position, and the input cost is higher, and difficult management.
SUMMERY OF THE UTILITY MODEL
The utility model provides a positioner is measured to piston, this positioner is measured to piston reducible clamping time promotes the piston measuring work efficiency, optimizes and measures the frock form, reduces special frock cost, improves measurement accuracy.
In order to achieve the above object, the utility model discloses a piston measuring and positioning device's technical scheme as follows:
the utility model provides a piston measurement positioning device, includes piston anchor clamps body and locating pin piece, the piston anchor clamps body has the survey anvil workstation, be provided with the support bar that is the v style of calligraphy and arranges on the survey anvil workstation, the locating pin piece has benchmark locating piece and locating pin, and the piston has the piston pinhole, the locating pin stretches into in the piston pin hole, the medial surface of benchmark locating piece and the lateral wall contact location of surveying the anvil workstation, and the locating pin promotes the piston to follow the upper surface of surveying the anvil workstation remove and with the support bar cooperation that the v style of calligraphy was arranged is used for right the piston carries out position alignment, makes the central axis of piston pinhole with the central symmetry line of the support bar that the v style of calligraphy was arranged is perpendicular.
Further, the piston anchor clamps body still includes and carries out spacing subassembly to the piston of accomplishing the position alignment.
Further, spacing subassembly includes the push rod, be formed with the external screw thread on the push rod, be provided with the push rod support on the anvil measurement workstation, be provided with the screw hole on the push rod support, the push rod with screw hole cooperation on the push rod support is connected, but the push rod rotary motion in order to with the piston extrudees spacingly.
Further, the central axis of the threaded hole is collinear with the central symmetry line of the support bars arranged in the V shape.
Further, the one end swing joint of push rod has the buffer limiting block, and the buffer limiting block is right the piston extrudes spacingly, the other end of push rod is provided with the push rod handle of being convenient for snatch.
Further, be formed with the slide rail guide slot on the survey anvil workstation, the slide rail guide slot with the central symmetry line collineation of the support bar that the V style of calligraphy was arranged, at least a part of buffering stopper hold in the slide rail guide slot, and follow the slide rail guide slot removes.
Furthermore, a gripping handle is formed on the push rod bracket.
Furthermore, a positioning pin hole is formed in the anvil measurement workbench, and the piston clamp body is fixed on the coordinate measuring machine through a bolt and the positioning pin hole.
Further, the bottom of the piston clamp body is provided with a plurality of support pins to support the piston clamp body from the coordinate measuring machine table for measuring height.
Further, the support pins have the same or different lengths so as to support the anvil table in a manner that a plane of the anvil table is parallel to or intersects a working plane of the coordinate measuring machine table.
The utility model discloses a piston measuring and positioning device adopts V style of calligraphy support bar and locating pin piece mating reaction to carry out three point location to the piston, under the cooperation of V style of calligraphy support bar and locating pin piece, can be used to fix a position the piston of multiple different model sizes, and the commonality is strong and practices thrift the cost. The piston measuring and positioning device is simple in structure, convenient to operate and high in efficiency, clamping working hours are shortened, and meanwhile alignment precision is improved.
Drawings
The piston measuring and positioning device of the present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
FIG. 1 is a diagram of the effect of positioning a piston using a prior art measurement positioning tool in which the probe pin shaft is not parallel to but interferes with the piston pin bore axis;
2-3 are perspective views of the piston measuring and positioning device of the present invention;
fig. 4 is a top view of the piston measuring and positioning device of the present invention;
fig. 5 is a top view of the piston measuring and positioning device of the present invention;
fig. 6 is a side view of the piston measuring and positioning device of the present invention;
fig. 7 is a top view of the piston measuring and positioning device of the present invention;
fig. 8 is a side view of the piston measuring and positioning device of the present invention;
fig. 9 is an effect diagram of the piston measuring and positioning device of the present invention for positioning the piston, wherein the probe needle bar is parallel to the axis of the piston pin hole without interference.
21-anvil table; 22-a support strip; 23-a slide rail groove; 24-a push rod support; 25-a push rod; 26-a push rod handle; 27-positioning pin holes; 28-support pins; 29-a buffer stop block; 31-a reference positioning block; 32-positioning pin
Detailed Description
The piston measuring and positioning device of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 2-4, the piston measuring and positioning device of the present invention comprises a piston fixture body 20 and a positioning pin block 30, wherein the piston fixture body 20 and the positioning pin block 30 cooperate to perform position alignment and positioning on the piston 10.
As shown in fig. 1 to 6, the piston fixture body 20 has an anvil workbench 21, the anvil workbench 21 is provided with support bars 22 arranged in a v shape, the anvil workbench 21 has a rectangular parallelepiped shape, the support bars 22 arranged in a v shape are symmetrically arranged along the anvil workbench 21, and if the central symmetry line of the support bars 22 arranged in a v shape is parallel to the length direction of the anvil workbench 21. The positioning pin block 30 is substantially L-shaped, the positioning pin block 30 has a reference positioning block 31 and a positioning pin 32, the positioning pin 32 can be made of nylon or the like, the piston 10 has a piston pin hole 11, when the piston 10 is placed on the anvil table 21, the positioning pin 32 of the positioning pin block 30 extends into the piston pin hole 11 and penetrates through the piston pin hole 11, a reference surface (such as the inner side wall of the reference positioning block 31) of the reference positioning block 31 contacts with the side wall of the anvil table 21 for positioning, and the anvil table 21 can be made of hardened steel.
The positioning pin block 30 is moved towards the direction of the support bars 22, and the positioning pin 32 moves and simultaneously contacts with two inner side walls of the piston pin hole 11, so that the piston 10 is aligned under the thrust action of the positioning pin 32, and the central axis of the piston pin hole 11 is perpendicular to the central symmetry line of the support bars 22 arranged in a v shape.
Piston anchor clamps body 20 still includes the spacing subassembly of going on fixing a position to the piston of accomplishing position alignment, spacing subassembly includes push rod 25, is formed with the screw thread on the push rod 25, is provided with push rod support 24 on the anvil measurement workstation 21, is provided with the screw hole on the push rod support 24, and push rod 25 passes the screw hole on the push rod support 24 to can follow the screw hole rotation and advance or retreat along the direction of support bar 22, thereby it is spacing that portable piston with accomplishing position alignment extrudees. Preferably, the direction of movement of the push rod 25 through the threaded hole in the push rod bracket 24 is collinear with the line of central symmetry of the v-shaped arrangement of the support bars 22. Therefore, the threaded push rod 25 pushes the buffer stop block 29 to move close to the piston along the direction of the slide rail guide groove 23 by rotating the push rod handle 26 until the buffer stop block 29 contacts with the piston, so that the push rod 25 and the support bar 22 are matched and symmetrically extruded on the outer side wall of the piston.
One end activity of push rod 25 is provided with buffering stopper 29, and buffering stopper 29 is made for flexible material, and buffering stopper 29 can extrude spacingly to the piston to cause piston mechanical damage when avoiding push rod 25 to extrude the location. The other end of the push rod is provided with a push rod handle 26, and the push rod handle 26 can be conveniently grasped by a user, so that the push rod 25 can be conveniently driven to rotate to advance or retreat along the direction of the supporting bar 22. When the push rod 25 rotates, the buffer limiting block 29 does not rotate along with the push rod 25, so that the buffer limiting block is prevented from driving the piston 10 to displace.
The anvil measuring workbench 21 is provided with a slide rail guide groove 23, at least one part of a buffering limiting block 29 on the push rod 25 is accommodated in the slide rail guide groove 23, the buffering limiting block 29 moves along the slide rail guide groove 23 in the process of driving the push rod 25 to rotate to advance or retreat along the direction of the support bar 22, and the slide rail guide groove 23 is collinear with the central symmetry line of the support bar 22 arranged in a V shape.
A gripping handle 241 is formed on the push rod support 24, the push rod support 24 is in a supporting plate shape, an inner gap is formed on the push rod support 24, and the gripping handle 241 is formed at the position of the inner gap of the push rod support 24, so that a user can grip the whole piston clamp body 20 through the gripping handle 241.
The anvil table 21 is formed with a positioning pin hole 27, and a bolt may be passed through the positioning pin hole 27 to fix the piston holder body 20 to the coordinate measuring machine. The bottom of the piston holder body 20 is preferably provided with a support pin 28, and when the piston holder body 20 is fixed to the cmm by means of a bolt, the support pin 28 is in contact with the stage of the cmm, thereby spacing the bottom surface of the piston holder body 20 from the stage of the cmm and supporting the piston holder body 20 to ensure a height required for measurement.
According to different three-coordinate and probe structures, the positioning pin hole 27 and the supporting pin 28 matched with the anvil workbench 21 can be flexibly adjusted, namely the anvil workbench 21 is obliquely arranged by adjusting and replacing a plurality of supporting pins, so that the method can be used for measuring the jumping of excircle positioning parts, and can also be used for measuring parts positioned outside circles such as ring gauges, gears and the like, and therefore, the application range is wide.
In addition, if the piston fixture body 20 does not need to be fixed for temporary measurement, the piston fixture body 20 does not need to be fixed on the worktable of the coordinate measuring machine through the positioning pin hole 27 due to no large measurement force, and the stability of the piston measurement positioning device can be ensured only by the weight of the piston fixture body 20. The specific arrangement and positioning position of the piston measuring and positioning device need to be adjusted and designed according to the structure and the direction of a measuring probe of the coordinate measuring machine.
As shown in fig. 7-8, the piston measuring and positioning device of the present invention is used as follows:
firstly, the piston 10 to be measured is placed on the anvil workbench 21 of the piston clamp body 20, at this time, the push rod 25 is at a position far away from the support bars 22 arranged in a v shape, and the piston 10 is close to the support bars 22 arranged in the v shape, so as to provide a reserved space for the piston to be measured.
Next, the positioning pin 32 of the positioning pin block 30 is inserted through the piston pin hole 11 of the piston 10, and the reference positioning block 31 is brought into close contact with the side surface of the anvil table 21.
Then, the positioning pin block 30 is stably and slowly pushed towards the v-shaped arrangement of the support bars 22, at this time, the piston 10 will rotate due to the contact of the positioning pin 32 until the axis of the piston pin hole is completely contacted with the positioning pin 32, and at this time, the axis of the piston pin hole 11 is in a parallel state after alignment, which can be measured.
Finally, after the piston 10 is stably positioned in a contact manner, the piston is limited on the other side of the piston 10 by the push rod 25, the piston pin hole 11, the probe needle rod of the coordinate machine and the positioning pin 32 are in a parallel state, and the positioning pin block 30 can be pulled out at the moment, so that the measurement and positioning of the piston 10 on the coordinate machine are completed.
As shown in FIG. 9, adopt the utility model discloses a when piston measuring and positioning device fixes a position the piston, because the probe needle bar of measuring machine is parallel with piston pin hole axis and do not take place to interfere to piston measuring's alignment precision has been improved.
The utility model discloses a piston measuring and positioning device can effectively measure the piston and carry out accurate positioning, and the clamping is firm, can be applied to the piston of different models, and the simple operation has shortened and has measured required clamping man-hour, has improved work efficiency to reduce piston measurement cost, effectively avoided because the measuring error that the clamping produced fixes a position, higher using value has.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The utility model provides a piston measuring and positioning device, its characterized in that, includes piston anchor clamps body and locating pin piece, the piston anchor clamps body has the survey anvil workstation, be provided with the support bar that is the v style of calligraphy and arranges on the survey anvil workstation, the locating pin piece has benchmark locating piece and locating pin, and the piston has the piston pinhole, the locating pin stretches into in the piston pinhole, the medial surface of benchmark locating piece and the lateral wall contact location of surveying anvil workstation, locating pin promotion piston edge the upper surface of survey anvil workstation remove and with the support bar cooperation that the v style of calligraphy was arranged is used for right the piston carries out position alignment, makes the central axis of piston pinhole with the central symmetry line of the support bar that the v style of calligraphy was arranged is perpendicular.
2. The piston measuring and positioning device according to claim 1, wherein the piston holder body further comprises a limiting assembly for limiting the piston subjected to the position alignment.
3. The piston measuring and positioning device according to claim 2, wherein the limiting assembly comprises a push rod, an external thread is formed on the push rod, a push rod support is arranged on the anvil measuring table, a threaded hole is formed in the push rod support, the push rod is in fit connection with the threaded hole in the push rod support, and the push rod can rotate and move to extrude and limit the piston.
4. The piston measuring and positioning device of claim 3, wherein the central axis of the threaded hole is collinear with the central symmetry line of the v-shaped arrangement of the support bars.
5. The piston measuring and positioning device according to claim 3, wherein a buffer limiting block is movably connected to one end of the push rod and used for limiting the piston in an extrusion manner, and a push rod handle convenient to grab is arranged at the other end of the push rod.
6. The piston measuring and positioning device according to claim 5, wherein a slide rail guide groove is formed on the anvil workbench, the slide rail guide groove is collinear with the central symmetry line of the v-shaped arrangement of the support bars, and at least a part of the buffering and limiting block is accommodated in the slide rail guide groove and moves along the slide rail guide groove.
7. The piston measuring and positioning device of claim 3 wherein said push rod carriage has a gripping handle formed thereon.
8. The piston measuring and positioning device according to claim 1, wherein a positioning pin hole is formed in the anvil table, and the piston holder body is fixed to the coordinate measuring machine by a bolt and the positioning pin hole.
9. The piston measuring and positioning device of claim 1, wherein the bottom of the piston jig body is provided with a plurality of support pins to support the piston jig body from the cmm table for measuring height.
10. The piston measuring and positioning device of claim 9, wherein the plurality of support pins are of the same or different lengths to support the anvil table in a plane parallel to or intersecting a working plane of the coordinate measuring machine table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020268017.6U CN211576128U (en) | 2020-03-06 | 2020-03-06 | Piston measuring and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020268017.6U CN211576128U (en) | 2020-03-06 | 2020-03-06 | Piston measuring and positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211576128U true CN211576128U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020268017.6U Expired - Fee Related CN211576128U (en) | 2020-03-06 | 2020-03-06 | Piston measuring and positioning device |
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| CN (1) | CN211576128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333364A (en) * | 2021-06-24 | 2021-09-03 | 广西大学 | Piston clamping device |
-
2020
- 2020-03-06 CN CN202020268017.6U patent/CN211576128U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333364A (en) * | 2021-06-24 | 2021-09-03 | 广西大学 | Piston clamping device |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |