CN113739667B - Detection tool and detection method for turbocharger middle shell - Google Patents
Detection tool and detection method for turbocharger middle shell Download PDFInfo
- Publication number
- CN113739667B CN113739667B CN202111291941.1A CN202111291941A CN113739667B CN 113739667 B CN113739667 B CN 113739667B CN 202111291941 A CN202111291941 A CN 202111291941A CN 113739667 B CN113739667 B CN 113739667B
- Authority
- CN
- China
- Prior art keywords
- measuring
- dial indicator
- middle shell
- hole
- oil inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to the technical field of automobile part machining, in particular to a gauge, which comprises a reference shaft, wherein a centering mechanism and a measuring part are arranged on the reference shaft; and a measuring rod of the dial indicator measuring tool penetrates through the oil inlet hole and then is vertically abutted with the outer diameter of the measuring part, so that the measuring rod is displaced in the dial indicator measuring tool, the dial indicator measuring tool displays a measured value according to the displacement of the measuring rod, and the measured value is compared with a calibration set value according to the measured quantity so as to detect whether the middle shell is qualified or not. The detection method for the turbocharger middle shell adopts the detection tool, and comprises the following steps: positioning the middle shell to enable the center line of the reference shaft to be superposed with the center line of the bearing hole of the middle shell; calibrating the dial indicator measuring tool; detecting a dial indicator measuring tool: and inserting the insertion part of the dial indicator measuring tool into the oil inlet hole of the middle shell, and observing whether the indicator needle is in the zero position set by calibration or not, thereby judging whether the middle shell is qualified or not. The inspection steps are simplified, the inspection efficiency is improved, and the measurement accuracy is improved.
Description
Technical Field
The invention relates to the technical field of automobile part machining, in particular to a detection tool and a detection method for a turbocharger middle shell.
Background
In the production and detection process of the intermediate shell 2 of the turbocharger shown in fig. 1, the distance L between the hole inner step surface 23 of the oil inlet hole of the intermediate shell 2 and the center line of the bearing hole 21 needs to be detected. The constrained workpiece structure and the bearing hole 21 are virtual points that cannot be directly measured.
In the existing inspection method, firstly, a magnetic suction block is used for supporting a workpiece and is pulled to be horizontal by taking an orifice end face 24 of an oil inlet hole as a reference; secondly, measuring the port end surface 24 of the oil inlet hole and the lowest point of the bearing hole 21 by using a height gauge to obtain a distance (a); measuring the diameter of the bearing hole 21 by using a caliper and dividing the diameter by 2 to obtain radius data (b); fourthly, obtaining the distance (c) between the end face of the orifice of the oil inlet and the central line of the bearing hole 21 by using the data a-b; measuring the distance (d) from the orifice end surface 24 to the inner step surface 23 of the oil inlet hole by using a depth gauge; the data c-d obtain the distance (e) from the inner step surface 23 of the oil inlet hole to the central line of the bearing hole 21, namely the distance L.
The existing calculation has the following obvious defects: firstly, the operation is complicated, and the actual measurement needs about 3 minutes; second, measurement is carried out for multiple times, and accumulated conversion exists, so that measurement errors exist; the skill of an operator is required to be high, and the problems of repeatability and reproducibility exist; fourthly, the control of the field product quality is not facilitated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the detection tool and the detection method of the turbocharger intermediate shell are provided, and the problems that the efficiency is low and the measurement is not accurate in the detection of the distance from the step surface of the oil inlet of the turbocharger intermediate shell to the bearing hole are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: in a first aspect: the gauge comprises a reference shaft, a centering mechanism and a measuring part, wherein the reference shaft is suitable for being inserted into a bearing hole of a middle shell, the centering mechanism and the measuring part are arranged on the reference shaft, and the centering mechanism is suitable for being matched with the bearing hole so that the center line of the reference shaft is coincided with the center line of the bearing hole; the circle center of the outer diameter of the measuring part is coincident with the center line of the reference shaft, the measuring part is positioned on one side of the oil inlet hole, and a distance to be measured is formed between the inner step surface of the oil inlet hole and the nearest outer diameter of the measuring part; the dial indicator measuring tool is suitable for being matched with a step surface in a hole of the oil inlet hole, a measuring rod of the dial indicator measuring tool penetrates through the oil inlet hole and then is vertically abutted against the outer diameter of the measuring part, so that the measuring rod is displaced in the dial indicator measuring tool, the dial indicator measuring tool displays a measured value according to the displacement of the measuring rod, and the measured value is compared with a calibration set value according to the measured quantity so as to detect whether the middle shell is qualified or not.
Further, the centering mechanism comprises a conical part and a limiting part, the limiting part is positioned above the measuring part, the conical part is positioned below the measuring part, and the central lines of the conical part, the limiting part and the measuring part are overlapped; the outer conical surface of the conical part is suitable for being matched with the orifice at the lower end of the bearing hole, so that the central line of the conical part is superposed with the central line of the bearing hole; the limiting part is suitable for being matched with the bearing hole, and the outer diameter size of the limiting part is in minimum clearance fit with the inner diameter size of the bearing hole so as to limit the radial movement of the reference shaft and the middle shell, and further the center line of the conical part is kept coincident with the center line of the bearing hole.
Furthermore, the dial indicator measuring tool comprises an indicator seat, wherein one end of the indicator seat forms an insertion part, and the other end of the indicator seat forms an installation part; the inserting part is suitable for being inserted into the oil inlet hole of the middle shell, and the limiting end face of the inserting part is abutted with the step surface in the oil inlet hole so as to limit the inserting depth of the gauge stand; the outer diameter surface of the insertion part is matched with the inner diameter of the oil inlet hole, so that the insertion part is perpendicular to the measuring part of the reference shaft; the measuring rod penetrates through the gauge stand, and the outer end of the measuring rod extends out of the insertion part and is suitable for abutting against the outer diameter of the measuring part; the measuring head of the dial indicator is suitable for abutting against the inner end of the measuring head in the gauge stand so as to drive the dial indicator to work.
Furthermore, the dial indicator comprises a dial plate, a sleeve and a measuring head, the sleeve is in threaded connection with the mounting portion of the gauge stand, and the measuring head extends out of the sleeve and abuts against the inner end of the measuring rod.
Furthermore, the measuring rod is a T-shaped rod, the long edge of the measuring rod extends out of the gauge stand and is suitable for abutting against the outer diameter of the measuring part, and the short edge of the measuring rod is located in the gauge stand and is suitable for abutting against the measuring head.
The device further comprises a calibration piece, wherein a calibration groove is formed in the calibration piece; and when the measuring rod is inserted into the calibration groove and abuts against the groove bottom, the value of the dial indicator at the moment is used as a calibration set value.
Furthermore, the inner end surface of the measuring rod is a flat end surface, so that the inner end of the measuring rod is in contact with the highest point of the outer diameter of the measuring part.
Furthermore, a base is further arranged on the reference shaft and located below the conical portion.
In a second aspect: the utility model provides a turbo charger intermediate shell detection method, characterized by, adopt above-mentioned utensil of examining, include: positioning the middle shell: inserting the reference shaft into the bearing hole of the middle shell to enable the center line of the reference shaft to be overlapped with the center line of the bearing hole of the middle shell; calibrating a dial indicator measuring tool: inserting a measuring rod of the dial indicator measuring tool into a calibration groove of the calibration piece, and setting the position of a pointer of the dial indicator at the moment as a zero position; detecting a dial indicator measuring tool: the method comprises the steps of inserting an insertion part of a dial indicator measuring tool into an oil inlet hole of a middle shell, when the inner end of a measuring rod is in contact with the highest point of the outer diameter of the measuring part, driving a dial indicator needle to rotate by the inner end of the measuring rod through a measuring head until the limiting end face of the insertion part is abutted to the step face in the oil inlet hole, stopping rotation of the indicator needle of the dial indicator, observing whether the indicator needle is in a zero position set by calibration at the moment, and judging whether the middle shell is qualified.
The invention has the beneficial effects that: according to the detection tool and the detection method of the intermediate shell of the turbocharger, direct reading can be realized through the dial indicator, the distance from the step surface in the hole of the oil inlet hole of the intermediate shell to the center of the bearing hole is effectively measured, the detection steps are simplified, the detection efficiency is improved, the measurement accuracy is improved, the problems of repeatability and reproducibility are effectively solved, the detection tool and the detection method can be effectively applied to the production and detection line, and effective monitoring means are provided for the production quality of products.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic illustration of an intermediate shell;
FIG. 2 is a reference axis schematic;
FIG. 3 is a schematic diagram of a dial gauge;
FIG. 4 is a schematic view of a calibration piece;
FIG. 5 is a schematic view of a dial gauge detecting the middle shell;
2, an intermediate shell, 21, a bearing hole, 22, an oil inlet hole, 23, a step surface in the hole, 24 and an orifice end surface;
3. a reference shaft 31, a conical part 32, a measuring part 33, a limiting part 34 and a base;
4. a gauge stand 41, a circumferential outer diameter surface 42 and a limiting end surface;
5. a measuring rod;
6. a dial indicator 61, a measuring head 62 and a sleeve;
7. calibration piece, 71, calibration groove.
Detailed Description
The invention will now be further described with reference to specific examples. These drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example one
As shown in fig. 1 to 5, a checking fixture comprises a reference shaft 3 adapted to be inserted into a bearing hole 21 of an intermediate housing 2, wherein a centering mechanism and a measuring part 32 are arranged on the reference shaft 3, and the centering mechanism is adapted to be matched with the bearing hole 21 so that a center line of the reference shaft 3 coincides with a center line of the bearing hole 21; the circle center of the outer diameter of the measuring part 32 is coincided with the central line of the reference shaft 3, and the measuring part 32 is positioned on one side of the oil inlet 22; the dial indicator measuring tool is suitable for being matched with the hole inner step surface 23 of the oil inlet hole 22, the measuring rod 5 of the dial indicator measuring tool penetrates through the oil inlet hole 22 and then is vertically abutted against the outer diameter of the measuring part 32, so that the measuring rod 5 is displaced in the dial indicator measuring tool, the dial indicator measuring tool displays a measuring value according to the displacement of the measuring rod 5, and the measuring quantity is compared with a calibration set value to detect whether the middle shell 2 is qualified or not.
Specifically, as an alternative embodiment in this embodiment, as shown in fig. 2, the centering mechanism includes a tapered portion 31 and a limiting portion 33, the limiting portion 33 is located above the measuring portion 32, the tapered portion 31 is located below the measuring portion 32, and center lines of the tapered portion 31, the limiting portion 33, and the measuring portion 32 are overlapped; the outer conical surface of the conical part 31 is suitable for being matched with the lower end opening of the bearing hole 21, so that the central line of the conical part 31 is superposed with the central line of the bearing hole 21; the limiting portion 33 is suitable for being matched with the bearing hole 21, and the outer diameter of the limiting portion 33 is in minimum clearance fit with the inner diameter of the bearing hole 21 so as to limit the reference shaft 3 and the middle shell 2 to move radially, and further the central line of the conical portion 31 is overlapped with the central line of the bearing hole 21.
In the present embodiment, the minimum clearance fit is a level of clearance fit, and the minimum clearance is a fit in which the clearance between the outer diameter of the stopper portion 33 and the inner diameter of the bearing hole 21 is zero.
Specifically, as an optional implementation manner in this embodiment, as shown in fig. 3, the dial gauge includes a gauge stand 4, one end of which forms an insertion part, and the other end of which forms an installation part; the inserting part is suitable for being inserted into the oil inlet hole 22 of the middle shell 2, and the limiting end surface 42 of the inserting part is abutted with the step surface 23 in the oil inlet hole 22 so as to limit the inserting depth of the gauge stand 4; the outer diameter surface 41 of the insertion part is matched with the inner diameter surface of the oil inlet hole, so that the insertion part is perpendicular to the measuring part 32 of the reference shaft 3; the measuring rod 5 penetrates through the gauge stand 4, and the outer end of the measuring rod 5 extends out of the insertion part and is suitable for abutting against the outer diameter of the measuring part 32; and the measuring head 61 of the dial indicator 6 is suitable for abutting against the inner end of the measuring rod 5 in the gauge stand 4 so as to drive the dial indicator 6 to work.
In this embodiment, the dial indicator 6 and the gauge stand 4 are assembled and connected first, and then are debugged, so that the dial indicator 6 completes zero calibration.
The mounting position between the gauge stand 4 and the oil inlet hole 22 of the middle shell 2 needs to control the depth of the gauge stand 4 inserted into the oil inlet hole 22 and the coaxiality between the gauge stand 4 and the oil inlet hole 22; the insertion depth of the gauge stand 4 is controlled by abutting the limiting end face 42 with the inner diameter surface 23 of the oil inlet hole 22, and the coaxiality between the gauge stand 4 and the oil inlet hole 22, or the verticality between the gauge stand 4 and the reference shaft 3 is controlled by matching the circumferential outer diameter surface 41 with the inner diameter surface of the oil inlet hole 22. After the depth and the verticality are ensured, the calibrated dial indicator 6 can carry out accurate measurement.
In this embodiment, the inside of the oil inlet 22 includes a large-diameter hole and a small-diameter hole due to the stepped hole therein, the circumferential outer diameter surface 41 is matched with the large-diameter hole in the oil inlet 22, the hole bottom surface of the large-diameter hole is the inner stepped surface 23, and the measuring rod 5 passes through the small-diameter hole.
Specifically, as an optional implementation manner in this embodiment, as shown in fig. 3, the dial indicator is adopted as the dial indicator 6; the dial indicator 6 comprises a dial plate (not shown in the figure), a sleeve 62 and a measuring head 61, the sleeve 62 is fixedly connected with the dial plate, the sleeve 62 is in threaded connection with the mounting portion of the gauge stand 4, so that the dial plate is fixed, and the measuring head 61 extends out of the sleeve 62 and abuts against the inner end of the measuring rod 5.
In this embodiment, a stop ring is provided on the outside of the sleeve 62, and is used to abut against the watch base 4 to limit the depth of the sleeve 62 screwed into the watch base 4.
In this embodiment, can adjust the mounted position of percentage table 6 on gauge stand 4 through rotating sleeve 62, simultaneously with gauge head 61 with 5 inner looks butt in measuring staff, make gauge head 61 to the internal indentation of dial plate, gauge head 61 indentation drives the pointer rotation, has finally just also controlled the rotatory stop position of pointer in the dial plate.
Specifically, as an alternative embodiment in this embodiment, as shown in fig. 3, the measuring rod 5 is a T-shaped rod, a long side of the measuring rod 5 extends from the gauge stand 4 and is adapted to abut against the outer diameter of the measuring portion 32, and a short side of the measuring rod 5 is located in the gauge stand 4 and is adapted to abut against the measuring head 61.
In this embodiment, the T-shaped measuring rod 5 can stably contact the measuring head 61 with the inner end of the measuring rod 5, and can prevent the measuring rod 5 from slipping out of the watch seat 4.
Specifically, as an optional implementation manner in this embodiment, as shown in fig. 4, the calibration device further includes a calibration piece 7, and the calibration piece 7 is provided with a calibration groove 71; when the dial indicator measuring tool is debugged: and when the plug-in part of the gauge stand 4 of the dial indicator measuring tool is abutted with the upper end of the calibrating part 7 and the measuring rod 5 is vertically inserted into the calibrating groove 71 to be abutted with the bottom of the groove, the value of the dial indicator 6 at the moment is taken as a calibration set value.
If the value calibrated at this time, i.e. the position where the pointer is rotated to stay, is not at the zero position, the pointer can be reset to zero by rotating the meter head, i.e. the zero position is corrected. The calibration setting value is zero. Thus, the measured value and the calibration set value can be conveniently compared.
Specifically, as an alternative embodiment in this embodiment, as shown in fig. 3, the inner end surface of the measuring rod 5 is a flat end surface, so that the inner end of the measuring rod 5 is in contact with the highest point of the outer diameter of the measuring part 32.
Specifically, as an alternative embodiment in this embodiment, as shown in fig. 2, a base 34 is further disposed on the reference shaft 3, and the base 34 is located below the tapered portion 31.
In this embodiment, the base 34 is relied upon to facilitate smooth placement of the entire reference shaft 3.
The checking fixture mainly comprises a reference shaft 3 and a dial indicator measuring tool, wherein the reference shaft 3 is inserted into a bearing hole 21 of the middle shell 2, and the reference shaft 3 and the bearing hole 21 are ensured to be positioned at the same axial lead; the dial indicator measuring tool is inserted from the oil inlet hole 22 of the middle shell 2 after being calibrated, the insertion depth of the dial indicator measuring tool and the verticality between the dial indicator measuring tool and the reference shaft 3 are guaranteed, then measurement is carried out, the measured numerical value is accurate, whether the position of a measuring value pointer is in a zero position or not is observed, or whether the position of the measuring value pointer is in a tolerance range specified by the left and right of the zero position or not is observed, and therefore whether the middle shell 2 is qualified or not can be easily identified.
The checking fixture simplifies the checking steps, improves the checking efficiency, improves the measuring accuracy, effectively solves the problems of repeatability and reproducibility, can be effectively applied to the production and checking line, and provides an effective monitoring means for the production quality of products.
Example two
As shown in fig. 5, a method for detecting a turbocharger middle shell 2, which uses the detection tool of the first embodiment, includes: positioning of the middle shell 2: inserting the reference shaft 3 into the bearing hole 21 of the middle shell 2, and enabling the center line of the reference shaft 3 to be overlapped with the center line of the bearing hole 21 of the middle shell 2; when the reference shaft 3 is machined and manufactured, the conical part 31, the measuring part 32 and the limiting part 33 are all ensured to be positioned on the same axis, and then the center of an outer diameter circle of the measuring part 32 is also ensured to be positioned on the axis; then, the shaft axis of the reference shaft 3 is ensured to coincide with the shaft axis of the bearing hole 21 by the fitting of the tapered portion 31 and the stopper portion 33 with the bearing hole 21.
Calibrating a dial indicator measuring tool: inserting the measuring rod 5 of the dial indicator measuring tool into the calibration groove 71 of the calibration piece 7, and setting the position of the pointer of the dial indicator 6 at the moment to be a zero position; specifically, the sleeve 62 of the dial indicator 6 is first screwed into the gauge stand 4, the gauge head 61 abuts against the inner end of the measuring rod 5, and then the gauge head is aligned with the calibration piece 7, and the limit end face 42 of the gauge stand 4 is gradually lowered to be in contact with the upper end face of the calibration piece 7.
Ensuring that the measuring rod 5 is abutted with the calibration groove 71 and the limiting end face 42 of the gauge stand 4 is contacted with the upper end face of the calibration part 7 at the moment, slowly pressing down the gauge stand 4 to be flush with the upper end face of the calibration part 7, vertically inserting the measuring rod 5, abutting the lower end of the measuring rod 5 against the bottom face of the calibration groove 71, driving the measuring head 61 to move by the measuring rod 5, finally driving the gauge needle in the dial indicator 6 to rotate, and finally rotating the gauge head of the dial indicator 6 to return to zero; after the dial indicator measuring tool is calibrated, the calibrating part 7 is taken away, the measuring rod 5 extends out under the reset elasticity of the measuring head 61, and the extending length of the measuring rod 5 is ensured to be larger than the required measuring length in the middle shell 2, namely, the distance between the oil inlet hole step 23 and the outer diameter of the closest measuring part 32; detecting a dial indicator measuring tool: the plug-in part of the dial indicator measuring tool is inserted from the oil inlet hole 22 of the middle shell 2, when the inner end of the measuring rod 5 is in contact with the highest point of the outer diameter of the measuring part 32, the inner end of the measuring rod 5 drives the indicator of the dial indicator 6 to start rotating through the measuring head 61 until the limiting end face 42 of the plug-in part is abutted to the step surface 23 in the hole of the oil inlet hole 22, the indicator of the dial indicator 6 stops rotating, and whether the indicator is in a zero position set by calibration or not is observed, so that whether the middle shell 2 is qualified or not is judged.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A checking fixture is characterized by comprising a reference shaft (3) suitable for being inserted into a bearing hole (21) of a middle shell (2), wherein a centering mechanism and a measuring part (32) are arranged on the reference shaft (3), and the centering mechanism is suitable for being matched with the bearing hole (21) so that the center line of the reference shaft (3) is superposed with the center line of the bearing hole (21); the circle center of the outer diameter of the measuring part (32) coincides with the center line of the reference shaft (3), the measuring part (32) is positioned on one side of the oil inlet hole (22), and a distance to be measured is formed between the inner hole step surface (23) of the oil inlet hole (22) and the outer diameter surface of the measuring part (32) which is closest to the inner hole step surface; the dial indicator measuring tool is suitable for being matched with a step surface (23) in a hole of an oil inlet hole (22), a measuring rod (5) of the dial indicator measuring tool penetrates through the oil inlet hole (22) and then is vertically abutted against the outer diameter of a measuring part (32) so that the measuring rod (5) is displaced in the dial indicator measuring tool, the dial indicator measuring tool displays a measuring value according to the displacement of the measuring rod (5), and the measuring value is compared with a calibration set value according to the measuring quantity so as to detect whether the middle shell (2) is qualified or not; the centering mechanism comprises a conical part (31) and a limiting part (33), the limiting part (33) is positioned above the measuring part (32), the conical part (31) is positioned below the measuring part (32), and the central lines of the conical part (31), the limiting part (33) and the measuring part (32) are superposed; the outer conical surface of the conical part (31) is suitable for being matched with the lower end hole opening of the bearing hole (21) so that the central line of the conical part (31) is coincident with the central line of the bearing hole (21); the limiting part (33) is suitable for being matched with the bearing hole (21), and the outer diameter size of the limiting part (33) is in minimum clearance fit with the inner diameter size of the bearing hole (21) so as to limit the reference shaft (3) and the middle shell (2) to move radially, and further the center line of the conical part (31) is kept coincident with the center line of the bearing hole (21).
2. A gauge according to claim 1, wherein the dial gauge comprises: a meter base (4) with one end forming a plug-in part and the other end forming a mounting part; the plug-in part is suitable for being inserted into an oil inlet hole (22) of the middle shell (2), and a limiting end surface (42) of the plug-in part is abutted against an inner hole step surface (23) of the oil inlet hole (22) so as to limit the plug-in depth of the gauge stand (4); the circumferential outer diameter surface (41) of the insertion part is matched with the inner diameter surface of the oil inlet hole (22) so that the insertion part is perpendicular to the measuring part (32) of the reference shaft (3); the measuring rod (5) penetrates through the gauge stand (4), and the outer end of the measuring rod (5) extends out of the insertion part and is suitable for abutting against the outer diameter of the measuring part (32); the dial indicator (6) is arranged on the installation part of the indicator base (4), and a measuring head (61) of the dial indicator (6) is suitable for abutting against the inner end of a measuring rod (5) in the indicator base (4) so as to drive the dial indicator (6) to work.
3. The testing fixture according to claim 2, characterized in that the dial indicator (6) comprises a dial plate, a sleeve (62) and a measuring head (61), wherein the sleeve (62) is in threaded connection with the mounting part of the gauge stand (4), and the measuring head (61) extends out of the sleeve (62) and abuts against the inner end of the measuring rod (5).
4. A gauge according to claim 2 or 3, characterized in that the measuring rod (5) is a T-shaped rod, the long side of the measuring rod (5) extending from the gauge stand (4) and adapted to abut against the outer diameter of the measuring portion (32), and the short side of the measuring rod (5) being located in the gauge stand (4) and adapted to abut against the measuring head (61).
5. The checking fixture according to claim 2, characterized by further comprising a calibration piece (7), wherein the calibration piece (7) is provided with a calibration groove (71); and the plug-in part of the gauge seat (4) of the dial indicator measuring tool is abutted against the upper end of the calibrating part (7), and when the measuring rod (5) is inserted into the calibrating groove (71) and abutted against the groove bottom, the value of the dial indicator (6) at the moment is used as a calibration set value.
6. A gauge according to claim 2, characterized in that the inner end surface of the measuring rod (5) is a flat end surface, so that the inner end of the measuring rod (5) is in contact with the highest point of the outer diameter of the measuring portion (32).
7. Gauge according to claim 1, characterized in that the reference shaft (3) is further provided with a base (34), the base (34) being located below the cone (31).
8. A method for testing a turbocharger center housing, wherein the test tool of any one of claims 1 to 7 is used, and the method comprises the following steps: positioning of the intermediate shell (2): inserting the reference shaft (3) into a bearing hole (21) of the middle shell (2) to enable the center line of the reference shaft (3) to be overlapped with the center line of the bearing hole (21) of the middle shell (2); calibrating a dial indicator measuring tool: inserting a measuring rod (5) of the dial indicator measuring tool into a calibration groove (71) of a calibration piece (7), and setting the position of a pointer of the dial indicator (6) at the moment to be a zero position; detecting a dial indicator measuring tool: the method comprises the steps that an inserting part of a dial indicator measuring tool is inserted into an oil inlet hole (22) of a middle shell (2), when the inner end of a measuring rod (5) is in contact with the highest point of the outer diameter of a measuring part (32), the inner end of the measuring rod (5) drives a pointer of a dial indicator (6) to start rotating through a measuring head (61) until a limiting end face (42) of the inserting part is abutted to an inner hole step face (23) of the oil inlet hole (22), the pointer of the dial indicator (6) stops rotating, and whether the pointer is in a zero position set by calibration or not is observed, so that whether the middle shell (2) is qualified or not is judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111291941.1A CN113739667B (en) | 2021-11-03 | 2021-11-03 | Detection tool and detection method for turbocharger middle shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111291941.1A CN113739667B (en) | 2021-11-03 | 2021-11-03 | Detection tool and detection method for turbocharger middle shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113739667A CN113739667A (en) | 2021-12-03 |
| CN113739667B true CN113739667B (en) | 2022-03-08 |
Family
ID=78727206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111291941.1A Active CN113739667B (en) | 2021-11-03 | 2021-11-03 | Detection tool and detection method for turbocharger middle shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113739667B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812337A (en) * | 2022-06-23 | 2022-07-29 | 科华控股股份有限公司 | Detection tool and turbocharger volute detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204421814U (en) * | 2014-12-31 | 2015-06-24 | 无锡贝斯特精机股份有限公司 | Turbosupercharger middle case cross bore positioning step depth check tool |
| CN105841587A (en) * | 2016-03-28 | 2016-08-10 | 重庆建设工业(集团)有限责任公司 | Centering measurement apparatus for measuring center distance of two intersecting holes in intersecting hole system |
| CN106441031A (en) * | 2016-10-20 | 2017-02-22 | 中核（天津）机械有限公司 | Step hole depth measuring device |
| CN108458640A (en) * | 2018-03-12 | 2018-08-28 | 西安法士特汽车传动有限公司 | It is a kind of measure endoporus step surface to inner slot end interplanar distance general-purpose type cubing and method |
| CN208282725U (en) * | 2018-06-12 | 2018-12-25 | 重庆文安机械有限公司 | A kind of cylinder cover valve valve line and cam hole centre distance cubing |
| CN211317140U (en) * | 2019-10-31 | 2020-08-21 | 辽沈工业集团有限公司 | Deep hole step height measuring device |
-
2021
- 2021-11-03 CN CN202111291941.1A patent/CN113739667B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204421814U (en) * | 2014-12-31 | 2015-06-24 | 无锡贝斯特精机股份有限公司 | Turbosupercharger middle case cross bore positioning step depth check tool |
| CN105841587A (en) * | 2016-03-28 | 2016-08-10 | 重庆建设工业(集团)有限责任公司 | Centering measurement apparatus for measuring center distance of two intersecting holes in intersecting hole system |
| CN106441031A (en) * | 2016-10-20 | 2017-02-22 | 中核（天津）机械有限公司 | Step hole depth measuring device |
| CN108458640A (en) * | 2018-03-12 | 2018-08-28 | 西安法士特汽车传动有限公司 | It is a kind of measure endoporus step surface to inner slot end interplanar distance general-purpose type cubing and method |
| CN208282725U (en) * | 2018-06-12 | 2018-12-25 | 重庆文安机械有限公司 | A kind of cylinder cover valve valve line and cam hole centre distance cubing |
| CN211317140U (en) * | 2019-10-31 | 2020-08-21 | 辽沈工业集团有限公司 | Deep hole step height measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113739667A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017050288A1 (en) | Checking tool for metering distance between adjacent sinking grooves in inner hole of mechanical part | |
| CN113739667B (en) | Detection tool and detection method for turbocharger middle shell | |
| CN100523710C (en) | Measurer for measuring distance between off-centering taper hole and periphery of revolution body | |
| CN207936891U (en) | A kind of instrument for measuring pitch diameter of internal thread | |
| CN106403756B (en) | A kind of measuring device, taper plug gauge fixture and the taper ring-ga(u)ge fixture of long tubing taper thread | |
| CN112518310A (en) | Device and method for realizing high-precision coaxiality calibration of fluted disc | |
| CN213688184U (en) | Sealing plug verticality gauge | |
| CN204188097U (en) | A kind of taper thread mandrel | |
| CN201555539U (en) | Air valve check tool | |
| CN213363640U (en) | Bearing roller external diameter testing fixture | |
| CN114087962A (en) | Conical surface detection tool and detection method for oil sprayer hole of cylinder cover of low-speed machine | |
| CN114459322A (en) | Clutch pressure plate taper measuring tool and using method | |
| CN113390315A (en) | Range hood impeller runout detection method and detection device | |
| CN114061415A (en) | Taper hole measuring device and measuring method | |
| CN209857836U (en) | Utensil is examined to cylinder head disk seat hole and pipe hole axiality | |
| CN216898695U (en) | Bearing hole depth detection tool | |
| CN220818784U (en) | CVT driving shaft conical surface measuring point position gauge | |
| CN219798152U (en) | Integral detection device for multi-arc castings | |
| CN112629367B (en) | Worm tooth profile and tooth thickness detection device and method | |
| CN204679023U (en) | A kind of special measurement instrument measuring motor installation seam and ball screw right alignment | |
| CN218822120U (en) | Speed reducer crankshaft detection device | |
| CN211626326U (en) | Height detection device for measuring circle of engine cooling water pump shell | |
| CN217764808U (en) | Taper detector for taper hole | |
| CN220568075U (en) | Auxiliary device for detecting width dimension of inner and outer steps of miniature bearing retainer | |
| CN220437327U (en) | Coaxiality detection device for valve seat hole and guide pipe hole of cylinder cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |