CN211626326U

CN211626326U - Height detection device for measuring circle of engine cooling water pump shell

Info

Publication number: CN211626326U
Application number: CN202020577922.XU
Authority: CN
Inventors: 冯长虹; 张倡伟; 朱勇; 张�浩; 袁飞; 袁源; 辛博
Original assignee: Xixia Feilong Aluminum Products Co ltd
Current assignee: Xixia Feilong Aluminum Products Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-10-02
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a circle height detection device is measured to engine cooling water pump shell body belongs to engine cooling water pump and detects technical field, and it is including examining the concrete, detecting dabber, bush, percentage table, nut, spring and proofreading piece, examine and be equipped with the through-hole on the physically, set up in the first through-hole the bush, it inserts and locates to detect the dabber lower extreme the bush, it sets up the conical surface body that is used for centering axis to detect the dabber lower extreme, it sets up to detect the spindle upper end the nut, the spring housing is established detect dabber upper portion, and is located the nut with between the bush, set up in the second through-hole the percentage table, the height of proofreading piece is theoretical conical surface measurement circle height. The utility model discloses can the accurate casing conical surface of measuring measure round height and water pump shell conical surface value of beating, the effectual detection efficiency that has improved has guaranteed the qualification rate that the water pump dispatched from the factory.

Description

Height detection device for measuring circle of engine cooling water pump shell

Technical Field

The utility model relates to an engine cooling water pump detects technical field, specifically is an engine cooling water pump shell measures circle height detection device.

Background

The automobile engine cooling water pump is an important component of an automobile engine cooling system, and has the function of enabling cooling liquid to flow circularly to reduce the running temperature of an engine, so that in the machining process of the engine cooling water pump, strict structure detection is required, wherein the detection comprises the detection of the height of a measuring circle of a water pump shell, a conventional detection tool, such as a device disclosed in the patent document with the publication number of CN 205228335U, for quickly detecting the height from the large surface of a seat body to the circular surface of a conical surface, comprises a cone matched with the size of the inner conical surface of the seat body, a measuring rod is arranged on the cone, a quick detection mechanism comprises a cover body matched with the large surface of the seat body, the upper end surface of the cover body is of a step structure, and the step height difference is. The utility model discloses a detect accurate, with low costs, detection speed is fast. However, this utility model judges whether qualified through the difference in height of finger touch cover body up end and measuring stick up end the product, detects the precision inadequately, and this utility model can not measure the value of beating of water pump casing conical surface moreover.

Disclosure of Invention

In view of this, the utility model provides a to the not enough of prior art, the engine cooling water pump shell that provides can the rapid survey casing conical surface measure circle height and water pump shell conical surface value of beating, the accuracy is high moreover measures circle height detection device.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides an engine cooling water pump shell body measures circle height detection device, is including examining the concrete, detecting dabber, bush, percentage table, nut, spring and proofreading piece, examine and be equipped with the through-hole on the body, set up in the first through-hole the bush, it inserts and locates to detect the dabber lower extreme the bush, it sets up the conical surface body that is used for the centering axis to detect the dabber lower extreme, it sets up to detect the spindle upper end the nut, the spring housing is established detect dabber upper portion, and be located the nut with between the bush, set up in the second through-hole the percentage table, the height of proofreading piece is theoretical conical surface measurement circle height.

Further, the bushing is assembled on the inspection body through interference fit.

Furthermore, a set screw for fixing the dial indicator is arranged on the side face of the checking fixture body corresponding to the second through hole.

Furthermore, the calibration block comprises a bottom plate and two vertical blocks, counter bores are formed in two sides of the bottom surface of the bottom plate, screw holes are formed in the bottom surfaces of the two vertical blocks, and the two vertical blocks are connected with two ends of the bottom plate through bolts respectively.

Furthermore, a copper bush is arranged in the second through hole, and the dial indicator is inserted in the copper bush.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses height detection device is measured to engine cooling water pump shell body, the detection dabber passes through the sliding fit assembly between bush on examining the body, because can slide relatively between bush on detection dabber and the examining body and realize that detection dabber conical surface body and the internal diameter of work piece to be detected realize contacting, thereby can reduce the error of examining the central axis of a tool and work piece central axis, the spring that is located between nut and the bush guarantees that the location conical surface can float from top to bottom; the spherical surface of a measuring head of the dial indicator is in contact with the conical surface of a workpiece, a contact point A is the diameter end point position of a theoretical measuring circle of the workpiece, the distance X1 from the contact point A to the large surface of the workpiece is the height of the conical surface measuring circle, the top end X2 of the measuring head of the dial indicator corresponds to the height X1 of the theoretical conical surface measuring circle, the height X3 of a correction block is equal to X2, the dial of the dial indicator is zeroed by the correction block, the height of the workpiece is the theoretical height X1, the difference value between the actual height and the theoretical height of the conical surface measuring circle of the workpiece is displayed through the deviation of a pointer of the dial indicator and the calculation result of the numerical value of a standard correction block, namely the height of the conical surface measuring circle of the pump shell of the cooling water pump of the engine, and meanwhile, the spherical surface of.

The utility model discloses easily make, can measure round height and the pump casing conical surface of engine cooling water pump casing conical surface and beat and carry out convenient and accurate detection, the method is simple, the on-line measuring has been realized, the utilization detects the dabber conical surface and has reduced the error of the detection circle diameter that causes because of the fluctuation of casing hole machining dimension, and detect the beating of pump casing conical surface detection round height and the pump casing conical surface simultaneously, the effectual detection efficiency that has improved, the qualification rate that the water pump dispatched from the factory has been guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of the proof mass of the present invention;

FIG. 3 is an enlarged view of the measuring head of the dial indicator of the present invention;

the device comprises a dial indicator 1, a nut 2, a spring 3, a detection core shaft 4, a bushing 5, a detection body 6, a copper bushing 7, a set screw 8, a conical body 9, a bottom plate 10, a vertical block 11 and a bolt 12.

Detailed Description

For a better understanding of the present invention, the contents of the present invention will be further clarified below by referring to examples, but the present invention is not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.

Example one

As shown in figure 1, a circle height detection device is measured to engine cooling water pump shell, including examining concrete 6, detecting dabber 4, bush 5, percentage table 1, nut 2, spring 3 and proofreading piece, examine and be equipped with the through-hole on concrete 6, set up in the first through-hole bush 5, detect 4 lower extremes of dabber and insert and locate bush 5, detect 4 lower extremes of dabber and set up the conical surface body 9 that is used for centering axis, be equipped with the confession on the conical surface body 9 the hole that percentage table 1 passed, detect 4 upper ends of dabber and set up nut 2, 3 covers of spring are established detect 4 upper portions of dabber, and be located nut 2 with between the bush 5, set up in the second through-hole percentage table 1, the height of proofreading piece is theoretical conical surface measurement circle height.

Specifically, the bush 5 is fitted to the jig body 6 by interference fit.

The side of the detecting body 6 is provided with a set screw 8 used for fixing the dial indicator 1 at a position corresponding to the second through hole, a copper bush 7 is arranged in the second through hole, the dial indicator 1 is inserted in the copper bush 7, and the copper bush can effectively reduce vibration generated in the rotating process, so that the measuring precision of a jumping value is ensured.

The calibration block comprises a bottom plate 10 and two vertical blocks 11, counter bores are formed in two sides of the bottom surface of the bottom plate 10, screw holes are formed in the bottom surfaces of the two vertical blocks 11, and the two vertical blocks 11 are connected with two ends of the bottom plate 10 through bolts 12 respectively.

The measuring circle height detecting device of the engine cooling water pump shell of the embodiment of the utility model is characterized in that the detecting mandrel is assembled on the detecting body through the sliding fit between the detecting mandrel and the bush, and the detecting mandrel can slide relatively to the bush on the detecting body to realize the contact between the detecting mandrel conical surface body and the inner diameter of the detected workpiece, thereby reducing the error between the central axis of the detecting tool and the central axis of the workpiece, and the spring between the nut and the bush ensures that the positioning conical surface can float up and down; the method comprises the steps that the spherical surface of a measuring head of a dial indicator is in contact with the conical surface of a workpiece, the contact point A is the diameter end point position of a theoretical measuring circle of the workpiece, the distance X1 from the contact point A to the large surface of the workpiece is the height of the conical surface measuring circle, the distance X2 from the top end of the measuring head of the dial indicator to the large surface of the workpiece corresponds to the height X1 of the theoretical conical surface measuring circle, the height X3 of a calibration block is equal to X2, a dial of the dial indicator is calibrated to zero through the calibration block, the height of the workpiece is the theoretical height X1, the difference value between the actual height and the theoretical height of the conical surface measuring circle of the workpiece is displayed through the calculation result of the deviation of a pointer of the dial indicator and the numerical value of a standard calibration block, the height of the conical surface measuring circle of the conical surface of the cooling water pump shell.

The method adopts the conical surface body for positioning, so that gaps can be eliminated, for larger holes, the tolerance zone is often larger, at this time, the positioning part is divided into the cylindrical surface by the prior scheme, so that the gaps are inevitably generated, however, the large gaps are inevitably generated during centering, at this time, the centers of the gaps deviate from the theoretical center position, and the deviation amount inevitably generates errors on the measurement of the height of the conical surface; the pyramidal face solves the error caused by the gap.

The embodiment of the utility model provides a use method: 1. the calibration and correction block firstly calibrates the checking fixture, so that the height difference between the lower end surface of the checking fixture body and the arc top of the measuring head of the dial indicator is a calibration value X3, and the pointer of the dial indicator is set to be zero;

2. measuring the height of a measuring circle of the conical surface of the shell by using a gauge, reading the offset Y of the dial indicator, wherein the height of the measuring circle of the conical surface of the shell is the sum (offset distinguishing direction) of a standard value X1 and the offset Y;

3. the checking fixture rotates for a circle around the water pump shaft, and the fluctuation range of the pointer of the dial indicator is the cone runout value of the water pump shell.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides an engine cooling water pump shell measures circle height detection device which characterized in that: including examining the concrete, detecting dabber, bush, percentage table, nut, spring and proofreading piece, examine and be equipped with the through-hole on the body, set up in the first through-hole the bush, it inserts and locates to detect the dabber lower extreme the bush, it sets up the conical surface body that is used for centering axis to detect the dabber lower extreme, it sets up to detect the dabber upper end the nut, the spring housing is established detect dabber upper portion, and is located the nut with between the bush, set up in the second through-hole the percentage table, the height of proofreading piece is theoretical conical surface measurement circle height.

2. The apparatus for detecting the height of a measuring circle of a pump housing of an engine cooling water pump according to claim 1, wherein: the bushing is assembled on the inspection body through interference fit.

3. The apparatus for detecting the height of a measuring circle of a pump housing of an engine cooling water pump according to claim 1, wherein: and a set screw for fixing the dial indicator is arranged at the position, corresponding to the second through hole, of the side surface of the detection tool body.

4. The apparatus for detecting the height of a measuring circle of a pump housing of an engine cooling water pump according to claim 1, wherein: the checking block comprises a bottom plate and two vertical blocks, counter bores are formed in two sides of the bottom surface of the bottom plate, screw holes are formed in the bottom surfaces of the two vertical blocks, and the two vertical blocks are connected with the two ends of the bottom plate through bolts.

5. The apparatus for detecting the height of a measuring circle of a pump housing of an engine cooling water pump according to claim 3, wherein: and a copper bush is arranged in the second through hole, and the dial indicator is inserted in the copper bush.