CN209085480U - Crank center hole cubing - Google Patents
Crank center hole cubing Download PDFInfo
- Publication number
- CN209085480U CN209085480U CN201822164960.8U CN201822164960U CN209085480U CN 209085480 U CN209085480 U CN 209085480U CN 201822164960 U CN201822164960 U CN 201822164960U CN 209085480 U CN209085480 U CN 209085480U
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- China
- Prior art keywords
- positioning tube
- bar
- center hole
- detection
- detection bar
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- 238000001514 detection method Methods 0.000 claims abstract description 54
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a kind of crank center hole cubing, belongs to field of mechanical technique.It solves the problems, such as that the leak detection of existing crank center hole detection mode, detection accuracy be not high.It includes positioning tube and dial gauge, dial gauge is connected to positioning tube upper end, dial gauge lower end is equipped with the gauge outfit protruded into positioning tube, the detection bar that can be slided up and down is equipped in positioning tube, the gauge outfit lower end surface of dial gauge leans with detection bar upper surface, detection bar upper end is arranged with spring, spring upper end acts on positioning tube inner wall, lower spring end acts in detection bar, detection bar lower end, which has, extends to positioning tube outside and tapered cooperating head, and the position limiting structure of limitation detection bar sliding distance is equipped between positioning tube and detection bar, this crank center hole cubing further includes datum plate, several taper holes are provided through on datum plate, and the maximum diameter of hole of each taper hole is gradually increased.It has many advantages, such as that easy to operate, detection accuracy is high.
Description
Technical field
The utility model belongs to cubing technical field, is related to a kind of cubing more particularly to a kind of crank center hole cubing.
Background technique
Built-up crankshaft is important component in power-equipment, it is used to being converted to the linear motion of connecting rod into rotation fortune
It is dynamic.Right crank and crank-pin that left crank with right crank is connected of the built-up crankshaft generally by the left crank of tape spool and tape spool
Composition, left crank and right crank be all it is small in one end, the big structure in one end is fixed with crank arm in big end and sets on crank arm
There is eccentric orfice, the both ends of crank-pin are inserted into respectively in the eccentric orfice of the crank arm on left crank and right crank.Either left crank
Or right crank is all with centre bore, crank center hole important role in postorder processing, in general, in thick, finishing
In work all on the basis of crank center hole, therefore the drilling quality in crank center hole determines the quality of crank Roughing and fine machining.
It requires to detect crank center hole after being drilled centre bore on crank using drill bit, to judge the matter that drills
Whether amount is qualified.For at present, the detection for crank center hole is all using common measuring tool by reviewer to song
Handle centre bore measures and personal experience is combined to judge, however is tended to out by the structure that this detection method obtains
Existing error, therefore there is a problem that reliability is insufficient, detection accuracy is low.
Summary of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to propose a kind of crank center hole inspection
Tool, the technical problem to be solved is that how to improve detection accuracy.
The purpose of this utility model can be realized by the following technical scheme:
Crank center hole cubing, including positioning tube and dial gauge, dial gauge are connected to positioning tube upper end, dial gauge lower end
Equipped with the gauge outfit protruded into positioning tube, which is characterized in that it is equipped with the detection bar that can be slided up and down in the positioning tube, hundred
The gauge outfit lower end surface of table is divided to lean with detection bar upper surface, detection bar upper end is arranged with spring, and spring upper end acts on positioning
On cylinder inner wall, lower spring end is acted in detection bar, and detection bar has what is moved down to become always under the elastic force effect of spring
Gesture, detection bar lower end, which has, extends to positioning tube outside and tapered cooperating head, and limitation is equipped between positioning tube and detection bar
The position limiting structure of detection bar sliding distance, this crank center hole cubing further include datum plate, are provided through on datum plate several
Taper hole, and the maximum diameter of hole of each taper hole is gradually increased.
The taper and depth dimensions of centre bore designed by various sizes of crank are also different, therefore can be in advance in benchmark
Taper hole identical with crank center hole design size is set on plate as datum hole use, first will test bar lower end before detection
Cooperating head alignment fiducials plate on corresponding taper hole, the lower end surface of positioning tube is fitted to the upper surface of datum plate and makes cooperating head
It extend into taper hole, since the depth of the taper hole on datum plate and taper are identical as the projected depth in crank center hole and taper,
Therefore, dial gauge indicated value should be the projected depth in crank center hole, at this point, can be by the big pointer on the reading dial of dial gauge
It is transferred to " 0 " position.After dial gauge zeroing, then it will test the cooperating head of bar lower end and be directed at centre bore on crank to be detected, positioning
The lower end surface of cylinder is bonded with the end face of crank center hole to be measured side, then observes indicated value and " 0 " of percentage list index
The deviation of position, if deviation is within the allowable range, the crank center hole is qualified；If deviation exceeds in allowed band, the song
Handle centre bore is unqualified.
This crank center hole cubing is arranged through setting datum plate and on datum plate and crank center hole design size phase
Same taper hole returns to zero first with the taper hole on datum plate before each detection, thus improves detection accuracy well.
In above-mentioned crank center hole cubing, the detection bar includes the body of rod and is fixed on connecing for body of rod upper surface
Contact, cooperating head are fixed on the lower end surface of the body of rod, and external diameter of rod body is greater than contact head outer diameter, and the gauge outfit lower end surface of dial gauge is resisted against
On contact head, lower spring end covers on contact head and the lower end surface of spring withstands on the upper surface of the body of rod.
External diameter of rod body is greater than contact head outer diameter, such lower spring end can cover on contact head and with body of rod upper surface phase
It contacts and applies downward active force to detection bar, to make detection bar that there is the trend moved down always.
In above-mentioned crank center hole cubing, the position limiting structure includes stop screw and is opened in bar along axial direction
The bar limit slot of external side, positioning tube outside are provided through connecting hole, and stop screw is threadedly connected in connecting hole and limits
In the screw end insertion bar limit slot of position.
When assembly, it first will test bar and be threaded through in positioning tube, then stop screw is threadedly coupled to connection from outside to inside
In hole, the end of stop screw can make in the bar limit slot of the external side of insertion rod to be formed between detection bar and positioning tube can
Limit the position limiting structure of detection bar sliding distance.
In above-mentioned crank center hole cubing, as another technical solution, the position limiting structure includes limit spiral shell
It follows closely and is disposed through on the outside of positioning tube and be equipped with location hole, limit on the outside of the bar shaped sliding slot that positioning tube is axially arranged, the body of rod
Position screw passes through bar shaped sliding slot and stop screw end thread is connected to positioning hole.
When assembly, it first will test bar and be threaded through in positioning tube, stop screw end is then passed through into bar shaped sliding slot simultaneously from outer
It is threaded in positioning hole, so stop screw and bar shaped sliding slot are just constituted for limiting detection bar sliding distance
Position limiting structure.
In above-mentioned crank center hole cubing, annular knurl is equipped on the outside of the positioning tube.
Testing staff is hand-held positioning tube when detecting, therefore on the outside of positioning tube annular knurl is arranged to increase frictional force,
Testing staff is avoided to influence the accuracy of crank center hole detection because of rubber sleeve.
Compared with prior art, this crank center hole cubing is by being arranged datum plate and on datum plate in setting and crank
Design size identical taper hole in heart hole returns to zero first with the taper hole on datum plate, thus well before each detection
Improve detection accuracy.
Detailed description of the invention
Fig. 1 is the schematic diagram of this crank center hole cubing.
In figure, 1, positioning tube；1a, annular knurl；2, dial gauge；2a, gauge outfit；3, detection bar；3a, cooperating head；3b, the body of rod；3b
1, bar limit slot；3c, contact head；4, spring；5, datum plate；5a, taper hole；6, stop screw.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As shown in Figure 1, crank center hole cubing, including positioning tube 1 and dial gauge 2, annular knurl is equipped on the outside of positioning tube 1
1a, the lower end that dial gauge 2 is connected to 1 upper end of positioning tube and dial gauge 2 are equipped with the gauge outfit 2a protruded into positioning tube 1, in positioning tube 1
It is equipped with the detection bar 3 that can be slided up and down, the lower end surface gauge outfit 2a of dial gauge 2 and the upper surface of detection bar 3 lean, detection
3 upper end of bar is arranged with spring 4, and 4 upper end of spring acts on 1 inner wall of positioning tube, and 4 lower end of spring acts in detection bar 3, detection
Bar 3 has the trend moved down always under the elastic force effect of spring 4, and 3 lower end of detection bar, which has, to be extended to outside positioning tube 1 and be in
The cooperating head 3a of cone cell, and the position limiting structure for limiting 3 sliding distance of detection bar is equipped between positioning tube 1 and detection bar 3.
Detection bar 3 includes that body of rod 3b and the contact head 3c for being fixed on the upper surface body of rod 3b, cooperating head 3a are fixed on the body of rod
The lower end surface of 3b, body of rod 3b outer diameter are greater than contact head 3c outer diameter, and the lower end surface gauge outfit 2a of dial gauge 2 is resisted against on contact head 3c,
Spring 4 is lower, and end cap is on contact head 3c and the lower end surface of spring 4 withstands on the upper surface of body of rod 3b.In the present embodiment, limit knot
Structure includes stop screw 6 and is opened in the bar limit slot 3b1 on the outside of body of rod 3b along axial direction, runs through setting on the outside of positioning tube 1
There is connecting hole, stop screw 6 is threadedly connected in connecting hole and in the end of stop screw 6 insertion bar limit slot 3b1.
This crank center hole cubing further includes datum plate 5, and several taper hole 5a, and each taper hole are provided through on datum plate 5
The maximum diameter of hole of 5a is gradually increased.The taper and depth dimensions of centre bore designed by various sizes of crank are also different, because
Taper hole 5a identical with crank center hole design size can be arranged on datum plate 5 in advance as datum hole use in this.
Before detection, it first will test corresponding taper hole 5a on the cooperating head 3a alignment fiducials plate 5 of 3 lower end of bar, positioning tube 1
Lower end surface fit to the upper surface of datum plate 5 and extend into cooperating head 3a in taper hole 5a, due to taper hole 5a on datum plate 5
Depth and taper it is identical as the projected depth in crank center hole and taper, therefore, 2 indicated value of dial gauge should be crank center
The projected depth in hole, at this point, the big pointer on the reading dial of dial gauge 2 can be transferred to by " 0 " position.
After dial gauge 2 returns to zero, then it will test the cooperating head 3a of 3 lower end of bar and be directed at centre bore on crank to be detected, calmly
Position cylinder 1 lower end surface be bonded with the end face of crank center hole to be measured side, then observation 2 pointer of dial gauge indicated value and
The deviation of " 0 " position, if deviation is within the allowable range, the crank center hole is qualified；If deviation is somebody's turn to do beyond in allowed band
Crank center hole is unqualified.
Embodiment two
The present embodiment is essentially identical with the structure and principle of embodiment one, the difference is that: in the present embodiment, limit
Structure includes stop screw 6 and is disposed through on the outside of positioning tube 1 and along the bar shaped sliding slot that positioning tube 1 is axially arranged, the body of rod
Location hole is equipped on the outside of 3b, stop screw 6 passes through bar shaped sliding slot and 6 end thread of stop screw is connected to positioning hole.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (5)
1. crank center hole cubing, including positioning tube (1) and dial gauge (2), dial gauge (2) are connected to positioning tube (1) upper end,
Dial gauge (2) lower end is equipped with the gauge outfit (2a) protruded into positioning tube (1), which is characterized in that is equipped in the positioning tube (1)
The detection bar (3) that can be slided up and down, the gauge outfit lower end surface (2a) and detection bar (3) upper surface of dial gauge (2) lean, detection
Bar (3) upper end is arranged with spring (4), and spring (4) upper end acts on positioning tube (1) inner wall, and spring (4) lower end acts on detection
On bar (3), detection bar (3) has the trend moved down, detection bar (3) lower end tool always under the elastic force effect of spring (4)
Have and extend to positioning tube (1) outside and tapered cooperating head (3a), and is equipped with limitation inspection between positioning tube (1) and detection bar (3)
The position limiting structure of measuring staff (3) sliding distance, this crank center hole cubing further include datum plate (5), run through setting on datum plate (5)
Have several taper holes (5a), and the maximum diameter of hole of each taper hole (5a) is gradually increased.
2. crank center hole according to claim 1 cubing, which is characterized in that the detection bar (3) includes the body of rod
(3b) and the contact head (3c) for being fixed on the upper surface the body of rod (3b), cooperating head (3a) are fixed on the lower end surface of the body of rod (3b), bar
Body (3b) outer diameter is greater than contact head (3c) outer diameter, and lower end surface gauge outfit (2a) of dial gauge (2) is resisted against on contact head (3c), spring
(4) end cap is on contact head (3c) under and the lower end surface of spring (4) withstands on the upper surface of the body of rod (3b).
3. crank center hole according to claim 2 cubing, which is characterized in that the position limiting structure includes stop screw
(6) and along axial direction it is opened in the bar limit slot (3b1) on the outside of the body of rod (3b), is provided through connection on the outside of positioning tube (1)
Hole, stop screw (6) are threadedly connected in connecting hole and in stop screw (6) end insertion bar limit slot (3b1).
4. crank center hole according to claim 2 cubing, which is characterized in that the position limiting structure includes stop screw
(6) it and is disposed through on the outside of positioning tube (1) and is set on the outside of the bar shaped sliding slot that positioning tube (1) is axially arranged, the body of rod (3b)
There is location hole, stop screw (6) passes through bar shaped sliding slot and stop screw (6) end thread is connected to positioning hole.
5. crank center hole according to claim 1 cubing, which is characterized in that be equipped with rolling on the outside of the positioning tube (1)
Flower (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822164960.8U CN209085480U (en) | 2018-12-21 | 2018-12-21 | Crank center hole cubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822164960.8U CN209085480U (en) | 2018-12-21 | 2018-12-21 | Crank center hole cubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209085480U true CN209085480U (en) | 2019-07-09 |
Family
ID=67127157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822164960.8U Expired - Fee Related CN209085480U (en) | 2018-12-21 | 2018-12-21 | Crank center hole cubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209085480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735386A (en) * | 2020-06-22 | 2020-10-02 | 哈尔滨汽轮机厂有限责任公司 | Hole measuring tool and method for measuring internal center hole of special part with structure |
-
2018
- 2018-12-21 CN CN201822164960.8U patent/CN209085480U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735386A (en) * | 2020-06-22 | 2020-10-02 | 哈尔滨汽轮机厂有限责任公司 | Hole measuring tool and method for measuring internal center hole of special part with structure |
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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: 20190709 Termination date: 20211221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |