Annular explorator of differential carrier

Abstract

The utility model relates to the technical field of transmission, and discloses a differential carrier annular explorator which comprises an outer circular ring, an end face I and an end face II are arranged on the surface of the outer circular ring, a plurality of through holes are formed in the surface of the end face I and the surface of the end face II, and double counter bores are formed in the through holes. The surface of the first end face and the surface of the second end face are further provided with single pin holes, a single counter bore is formed in the portion, located on one side of the first end face, of the single pin hole, an inner ring hole is formed in the side wall of the inner ring of the outer circular ring, and a threaded hole perpendicular to the single pin hole is formed in the side wall of the inner ring of the outer circular ring. Double pin holes are symmetrically formed in the surface of the second end face and located on the two sides of the single pin hole. The utility model has the advantages of good practicality, good consistency and good versatility.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, in particular to an annular template for a differential case. Background Art

[0002] The differential is a key mechanical component in a forklift. It is installed in the drive axle and can make the left and right drive wheels rotate at different speeds when the forklift turns. The machining accuracy of the differential housing directly affects the power transmission stability of the transmission system. Especially when machining small differential housings, the accuracy of the mounting flange surface of the gear ring is a difficult point in machining. When machining the differential housing, due to the use of three-point positioning, the effective clamping length is short and the clamping area is small. During the machining process, the radial milling force interferes, resulting in an excessive parallelism of the gear ring mounting limit surface on the left end face. This clamping method has problems such as unstable clamping, low machining accuracy, and large dimensional fluctuations, which affects the qualified rate of finished products. The high scrap rate causes cost waste and needs to be improved. For this reason, a differential housing annular mold is designed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide a differential case annular mold with good practicality, good consistency and good versatility.

[0004] The annular master mold of the differential case proposed by the utility model comprises an outer ring, the surface of the outer ring is provided with an end face 1 and an end face 2, the surfaces of the end face 1 and the end face 2 are both provided with a plurality of through holes, the interiors of the through holes are both provided with double countersunk holes, the surfaces of the end face 1 and the end face 2 are also provided with a single pin hole, the interior of the single pin hole located on one side of the end face 1 is provided with a single countersunk hole, the inner ring side wall of the outer ring is provided with an inner ring hole, the inner ring side wall of the outer ring is provided with a threaded hole perpendicular to the single pin hole, and the surface of the end face 2 is symmetrically provided with double pin holes located on both sides of the single pin hole;

[0005] A workpiece differential housing and a three-jaw chuck are respectively arranged on both sides of the outer ring.

[0006] Preferably, a positioning seat is fixed to the side wall of the three-jaw chuck, a plurality of groups of countersunk screws are fixed to the end surface of the positioning seat, and a diamond pin is fixed to the end surface of the positioning seat and located between one group of countersunk screws.

[0007] Preferably, the outer ring is fixed to the surface of the positioning seat, the countersunk screws are respectively connected to the through holes, and the diamond pins are connected to the single pin holes.

[0008] Preferably, a locking screw is installed in the threaded hole, and the locking screw is butt-jointed and fixed with the diamond pin.

[0009] Preferably, the workpiece differential housing is fixed inside the three-jaw chuck and contacts the outer ring.

[0010] The beneficial effects of the utility model are:

[0011] 1. Simple structure, low production cost, easy installation and good practicality;

[0012] 2. The differential case is positioned by the annular surface, which has a large contact area, high clamping stability, and strong resistance to cutting force and vibration, which is conducive to high-precision processing, small product size fluctuation and good consistency;

[0013] 3. Workpieces with similar structural dimensions can be used, with good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram from the first perspective of the outer ring of the annular master mold of the differential case proposed by the utility model.

[0015] Figure 2 This is a second perspective structural schematic diagram of the outer ring of the annular master mold of the differential case proposed by the utility model.

[0016] Figure 3 This is a schematic diagram of the overall assembly structure of the differential case annular template proposed by the utility model.

[0017] Figure 4 This is a schematic diagram of assembling the outer ring of the annular mold of the differential case proposed by the utility model.

[0018] In the figure: 11, outer ring; 12, inner ring hole; 13, double pin hole; 14, single pin hole; 15, through hole; 16, double countersunk hole; 17, end face one; 18, end face two; 19, single countersunk hole; 20, threaded hole; 1, workpiece differential case; 2, three-jaw chuck; 201, locating seat; 203, countersunk screw; 204, diamond pin. DETAILED DESCRIPTION

[0019] Reference Figure 1-4 The differential case annular master mold comprises an outer ring 11, the surface of the outer ring 11 is provided with an end face 17 and an end face 18, the surfaces of the end face 17 and the end face 18 are both provided with a plurality of through holes 15, the interiors of the through holes 15 are both provided with double countersunk holes 16, the surfaces of the end face 17 and the end face 18 are also provided with a single pin hole 14, the interiors of the single pin hole 14 located on one side of the end face 17 are provided with a single countersunk hole 19, the inner ring side wall of the outer ring 11 is provided with an inner ring hole 12, the inner ring side wall of the outer ring 11 is provided with a threaded hole 20 perpendicular to the single pin hole 14, the surface of the end face 18 is symmetrically provided with double pin holes 13 located on both sides of the single pin hole 14, and the double pin holes 13 are connected to the positioning seat 201 to realize the positioning of the workpiece differential case 1;

[0020] A workpiece differential case 1 and a three-jaw chuck 2 are respectively arranged on both sides of the outer ring 11 .

[0021] A positioning seat 201 is fixed to the side wall of the three-jaw chuck 2 , and a plurality of sets of countersunk screws 203 are fixed to the end surface of the positioning seat 201 . A diamond pin 204 is fixed to the end surface of the positioning seat 201 and located between one set of countersunk screws 203 .

[0022] The outer ring 11 is fixed on the surface of the positioning seat 201 , the countersunk screws 203 are respectively connected to the through holes 15 , and the diamond pins 204 are connected to the single pin holes 14 .

[0023] A locking screw is installed in the threaded hole 20 , and the locking screw is butted and fixed with the diamond pin 204 .

[0024] The workpiece differential case 1 is fixed to the side wall of the outer ring 11 and is pressurized and fixed to the three-jaw chuck 2 .

[0025] When the device is in use, the end face of the annular mold is pressed against the positioning seat 201 of the machine tool spindle, and the double pin hole 13 is installed with a cylindrical pin and fixed in the pin hole corresponding to the spindle positioning seat 201 to achieve precise positioning of the two. Countersunk screws 203 are respectively installed at the through hole 15 and the double countersunk hole 16 and fastened in the threaded holes corresponding to the spindle positioning seat 201. At this time, the screw head should be lower than the end face to complete the installation of the annular mold and the machine tool spindle; the diamond pin 204 is connected to the workpiece differential case 1, and the end face 17 is pressed against the end face of the workpiece differential case 1. A cylindrical head bolt is installed in the threaded hole 20 to contact with the diamond pin 204 to limit the circular rotation of the diamond pin 204 itself. At this time, the large end arc pin surface of the diamond pin 204 is arranged along the circumferential direction of the annular mold to limit the rotation of the annular mold along its own axis. When in use, the three-jaw chuck 2 clamps the outer ring 11 of the differential case to process the gear ring installation limit surface on the left end face, and the clamping method has good processing stability and solves the problem of processing tolerance. The outer ring 11 and the inner hole avoid the machine tool and the workpiece.

Claims

1. The differential case annular mold is characterized by: It includes an outer ring, the surface of the outer ring is provided with end face 1 and end face 2, the surfaces of end face 1 and end face 2 are both provided with a plurality of through holes, the interior of the through holes are both provided with double countersunk holes, the surfaces of end face 1 and end face 2 are also provided with a single pin hole, the interior of the single pin hole located on the side of end face 1 is provided with a single countersunk hole, the inner ring side wall of the outer ring is provided with an inner ring hole, the inner ring side wall of the outer ring is provided with a threaded hole perpendicular to the single pin hole, the surface of end face 2 and symmetrically provided with double pin holes located on both sides of the single pin hole; a workpiece differential case and a three-jaw chuck are respectively provided on both sides of the outer ring.

2. The differential case annular master mold according to claim 1, characterized in that: A positioning seat is fixed on the side wall of the three-jaw chuck, a plurality of groups of countersunk screws are fixed on the end surface of the positioning seat, and a diamond pin is fixed on the end surface of the positioning seat and located between one group of countersunk screws.

3. The differential case annular master mold according to claim 2, characterized in that: The outer ring is fixed on the surface of the positioning seat, the countersunk screws are respectively connected to the through holes, and the diamond pin is connected to the single pin hole.

4. The differential case annular master mold according to claim 3, characterized in that: A locking screw is installed in the threaded hole, and the locking screw is butted and fixed with the diamond pin.

5. The differential case annular master mold according to claim 1, characterized in that: The workpiece differential case is fixed to the side wall of the outer ring and is pressurized and fixed to the three-jaw chuck.

Images