Differential three-coordinate detection tool

Abstract

The utility model provides a detection tool for three coordinates of a differential mechanism. The detection tool comprises a bottom plate, a lower supporting V-shaped block, rapid positioning devices and rapid pressing block mechanisms, the differential shell is erected in an attached mode through the lower supporting V-shaped block, and the rapid positioning mechanisms are arranged on the two sides of the differential shell respectively. The quick positioning mechanism is rotated to enable a positioning pin of the quick positioning mechanism to be inserted into a positioning fine hole of the differential shell so as to ensure that the differential shell is stably placed; and the arc of the pressing block of the quick pressing block mechanism is tightly attached to the upper part of the differential shell to stably press the differential shell and is screwed through the rotating screw, so that the differential shell is further stably placed, and the measurement error is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of data detection, in particular to a three-coordinate detection tool for a differential. Background Art

[0002] The differential is a rotating mechanism that can achieve different speeds; the automobile differential can make the left and right (or front and rear) drive wheels rotate at different speeds. It is mainly composed of left and right half-axle gears, two planetary gears and a gear rack; its function is to make the left and right wheels roll at different speeds when the car is turning or driving on an uneven road, that is, to ensure that the drive wheels on both sides perform pure rolling motion, that is, the differential is installed to adjust the speed difference between the left and right wheels. The actual elements of the parts after machining always have errors relative to the ideal elements, including shape errors and position errors, that is, form and position tolerances. The relative form and position tolerances of the two end faces, shaft diameter, and two-step cylindrical surfaces of the differential need to be detected at one time. There is no special detection tooling that can detect them at one time. In addition, the large outer circle of the existing differential is much larger than the other outer circles. Placing the center of gravity will cause the differential to be unable to be placed steadily, and there may be errors in the measurement, so it is impossible to measure accurately at one time; the simple V-blocks of the existing detection tooling are inconsistent in height and cannot be placed in parallel; and when detecting the next differential, the V-block moves and the origin measurement needs to be re-established. Utility Model Content

[0003] The technical problem to be solved by the utility model is to solve the problem that the detection tooling in the prior art cannot stably place the differential and cannot detect the form and position tolerance of the differential at one time, and that the origin measurement needs to be re-established during batch detection, which is cumbersome and inconvenient to operate. A three-coordinate detection tooling for a differential is provided.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a three-coordinate detection tool for a differential. The detection tool comprises: a bottom plate, the bottom plate is provided with a groove, the groove is used to install a lower support V-shaped block, and the lower support V-shaped block is used to set up a differential housing;

[0006] A quick positioning device and a quick pressing block mechanism are fixed to the bottom plate by bolts, and the quick positioning device is arranged on both sides of the lower supporting V-shaped block for positioning the differential housing;

[0007] The quick pressing mechanism is in contact with the differential housing.

[0008] Preferably, the quick positioning device comprises a positioning column, a knob, a spring and a positioning pin;

[0009] One end of the positioning pin is connected to the knob, and the other end is in active contact with the differential housing; the spring sleeve is on the positioning pin and in contact with the knob, and a notch is provided at one end of the positioning column.

[0010] Preferably, the positioning pin is installed in the slot, passes through the positioning column and is connected to the knob.

[0011] Preferably, the rapid briquetting mechanism comprises a briquetting column, a briquetting block, and a briquetting head;

[0012] The pressure head is movably connected to the pressure block column, the pressure block is installed on the lower side of the pressure head, and the pressure block is connected to the differential housing.

[0013] Preferably, rotating screws are provided at both ends of the pressing head, and the pressing head is movably connected to the pressing block columns via the rotating screws.

[0014] The positive progressive effect of the utility model is that the utility model provides a three-coordinate detection tool for a differential. The detection tool includes a bottom plate, a lower support V-block, a quick positioning device and a quick pressing block mechanism. The differential housing is mounted by the lower support V-block, and quick positioning mechanisms are respectively arranged on both sides of the differential housing. The quick positioning mechanism is rotated so that the positioning pin of the quick positioning mechanism is inserted into the positioning precision hole of the differential housing to ensure that the differential housing is placed stably; then the arc of the pressing block of the quick pressing block mechanism is pressed against the upper part of the differential housing to stabilize the differential housing and is tightened by rotating the screw, further ensuring that the differential housing is placed stably and reducing measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the one-time detection tooling structure of the differential three-coordinates according to the embodiment of the utility model.

[0016] Figure 2 It is a structural schematic diagram of a quick positioning mechanism for a disposable detection tooling according to an embodiment of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the quick block pressing mechanism of the disposable detection tooling according to an embodiment of the utility model.

[0018] Legend: 1. Differential housing; 2. Bottom plate; 3. Lower supporting V-block; 4. Quick positioning mechanism; 5. Quick pressing block mechanism; 41. Positioning column; 42. Knob; 43. Spring; 44. Positioning pin; 51. Pressing block column; 52. Pressing block; 53. Pressing head; 54. Rotating screw. DETAILED DESCRIPTION

[0019] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0020] Example 1

[0021] like Figure 1 As shown, this embodiment provides a three-coordinate detection tool for a differential. The detection tool comprises: a bottom plate 2, a lower support V-block 3, a quick positioning device 4 and a quick pressing block mechanism 5. A groove 11 is provided on the bottom plate 2, and the groove 11 is used to install the lower support V-block 3, and the lower support V-block 3 is used to set up the differential housing 1; the quick positioning device 3 and the quick pressing block mechanism 4 are fixed to the bottom plate 2 by bolts, and the quick positioning device 4 is provided on both sides of the lower support V-block 3, and is used to locate the differential housing 1; the quick pressing block mechanism 5 is in contact with the differential housing 1.

[0022] like Figure 2 As shown, in this embodiment, the quick positioning device 4 includes a positioning column 41, a knob 42, a spring 43 and a positioning pin 44; one end of the positioning pin 44 is connected to the knob 42, and the other end is in active contact with the differential housing 1; the spring 43 is sleeved on the positioning pin 44 and in contact with the knob 42, and one end of the positioning column 41 is provided with a notch; wherein the positioning pin 44 is installed in the notch, passes through the positioning column 41 and is connected with the knob 42. Specifically, after the differential housing 1 is placed, the positioning columns 41 are installed on both sides of the differential housing 1 according to the outer diameter of the differential housing 1, the knob 42 is rotated, and the positioning pin 44 on the positioning column 41 is inserted into the positioning precision hole of the differential housing 1 by using the elastic force of the spring 43, so that the quick positioning device 4 can complete the fixing of the differential housing 1, ensure that the differential housing 1 is stably placed on the lower supporting V-block 3, and reduce the measurement error.

[0023] like Figure 3 As shown, in this embodiment, the quick pressing mechanism 5 includes a pressing column 51, a pressing block 52, and a pressing head 53; the pressing head 53 is movably connected to the pressing column 51, the pressing block 52 is installed on the lower side of the pressing head 53, and the pressing block 53 is connected to the differential housing 1; wherein, rotating screws 54 are provided at both ends of the pressing head 53, and the pressing head 53 is movably connected to the pressing column 51 through the rotating screws 54. Specifically, the pressing column 51 is fixed to the bottom plate 2 by screws, and a spring is embedded at the upper end of the pressing column 51, and the other end of the spring is against the pressing head 53 to increase the elastic force; the pressing head 52 is in the shape of an "arch", and rotating screws 54 are provided at both ends. When installing the tooling, the pressing head 53 is placed on the pressing column 51, and the arc of the pressing block 52 fits the outer circle of the differential housing 1. The rotating screws 54 are tightened to press the pressing block 52 and the pressing head 53 firmly on the differential housing 1, further improving the stability of the placement of the differential housing 1 and reducing the measurement error.

[0024] The present embodiment provides a three-coordinate detection tool for a differential, which includes a base plate, a lower supporting V-block, a quick positioning device and a quick pressing block mechanism. The differential housing is mounted by fitting the lower supporting V-block, and quick positioning mechanisms are respectively arranged on both sides of the differential housing. The quick positioning mechanism is rotated so that the positioning pin of the quick positioning mechanism is inserted into the positioning precision hole of the differential housing to ensure that the differential housing is placed stably; then, the arc of the pressing block of the quick pressing block mechanism is pressed against the upper part of the differential housing to stabilize the differential housing and is tightened by rotating the screw, thereby further ensuring that the differential housing is placed stably and reducing measurement errors.

[0025] The working principle of the utility model is: insert the lower support V-block 3 into the groove 11 of the bottom plate 2, and place the differential housing 1 on the lower support V-block 3. A set of quick positioning mechanisms 4 are respectively installed on the bottom plate 2 by bolts, and are distributed on both sides of the lower support V-block 3. The knob 42 of the quick positioning mechanism 4 is rotated 90 degrees, and the positioning pin 44 can be inserted into the positioning precision hole on the differential housing 1 through the spring 43, so that the differential housing 1 is fixedly and stably installed on the lower support V-block 3. Then the quick pressing mechanism 5 is pressed on the differential housing 1, and the rotating screw 54 of the quick pressing mechanism 5 is tightened. The pressure head 53 and the pressure block column 51 are fixed so that the arc feature of the pressure block 52 presses the differential housing 1 steadily. After the tooling is installed, it is placed on the three-coordinate marble platform. After the three-coordinate detection of straightness and height, it is fixed on the marble platform with bolts to measure. After the three-coordinate detection is completed, loosen the rotating screw 54, and the springs at both ends of the quick pressing block mechanism 5 push the quick pressing block mechanism 5 open. Pull out the quick positioning mechanisms 4 at both ends and rotate them 90 degrees to make the quick positioning mechanisms 4 in the waiting position; after disassembling the differential housing 1, repeat the above actions to detect the next part.

[0026] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A three-coordinate detection tool for a differential, characterized in that: The detection tooling comprises: a bottom plate, the bottom plate is provided with a groove, the groove is used to install a lower support V-shaped block, and the lower support V-shaped block is used to set up a differential housing; A quick positioning device and a quick block pressing mechanism are fixed to the bottom plate by bolts, and the quick positioning device is arranged on both sides of the lower supporting V-shaped block for positioning the differential housing; The quick pressing mechanism is in contact with the differential housing.

2. The differential three-coordinate detection tool as claimed in claim 1, characterized in that: The quick positioning device comprises a positioning column, a knob, a spring and a positioning pin; One end of the positioning pin is connected to the knob, and the other end is in active contact with the differential housing; the spring sleeve is on the positioning pin and in contact with the knob, and a notch is provided at one end of the positioning column.

3. The differential three-coordinate detection tooling according to claim 2, characterized in that: The positioning pin is installed in the slot, passes through the positioning column and is connected with the knob.

4. The differential three-coordinate detection tool as claimed in claim 1, characterized in that: The rapid briquetting mechanism comprises a briquetting column, a briquetting block and a briquetting head; The pressure head is movably connected to the pressure block column, the pressure block is installed on the lower side of the pressure head, and the pressure block is connected to the differential housing.

5. The differential three-coordinate detection tool as claimed in claim 4, characterized in that: Rotating screws are arranged at both ends of the pressing head, and the pressing head is movably connected to the pressing block columns through the rotating screws.

Images