Device for controlling drilling and chamfering depth of axle housing flange plate

Abstract

The utility model discloses a device for controlling the drilling and chamfering depth of an axle housing flange plate, which is characterized by consisting of an induction system, a limiting system, a cutter system, a guide system, a spindle box body and a drill plate, the device is suitable for machining axle housing flange plate holes and chamfering on a gang drill type special machine through one-time clamping, the chamfering size can be adjusted according to the thickness of an axle housing flange plate, the chamfering depth is guaranteed, and the workpiece machining quality is stable; the device is simple in structure, concentrated in process and high in production efficiency, and reduces the labor of workers and the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge housing manufacturing, in particular to a device for controlling the drilling and chamfering depth of a bridge housing flange, which can be widely used in a group drilling type drilling machine to complete the processing of bridge housing flange holes and chamfers in one clamping. Background Art

[0002] At present, the processing of bridge housing flange holes generally adopts a group drilling machine to move the drilling template through a hydraulic slide. After reaching the limited position, a stepped drill bit is used to drill and chamfer the bridge housing flange. Since the bridge housing is large in shape and mostly adopts a welded structure, the bridge housing is greatly deformed. After welding, the length of the bridge housing cannot be controlled within a small range. This makes the distance from the end face of the bridge housing flange to the drill tip extremely unstable each time a hole is drilled. After processing, the chamfers of the flange holes are of different sizes, which seriously affects the processing quality of the bridge housing. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned existing technologies and provide a device for controlling the chamfering depth of the bridge housing flange drilling hole; it mainly solves the problem that when the chamfering of the bridge housing flange holes is processed by a group drilling special machine, the chamfering sizes are different, the processing quality is low, and the overall product quality of the bridge housing is affected.

[0004] The technical solution provided by the utility model is: a device for controlling the chamfering depth of the drilling hole of the flange of the bridge housing, which is special in that it is composed of a sensing system, a limit system, a tool system, a guide system, a spindle box body, and a drilling template;

[0005] The induction system includes a limit switch seat, which is fixed on the spindle box body and has two induction sensors.

[0006] A first bushing is provided at the upper part of the drilling template, and a pin is provided in the first bushing; a second bushing is provided at the middle part of the drilling template, and a stepped drill bit is provided in the second bushing; a guide rod is provided at the lower part of the drilling template;

[0007] The limiting system includes a pin shaft, a boss is arranged on the pin shaft, one end of the pin shaft is inserted into the inner hole of the first bushing, and the other end is inserted into the inner hole of the gland through the inner hole of the return spring, one end of the return spring is attached to the boss of the pin shaft, and the other end is attached to the end surface of the inner hole of the gland, the gland is fixed on the drilling template, and the pin shaft slides left and right in the holes on the first bushing and the gland; a limiting ring is arranged on the pin shaft;

[0008] The tool system comprises a tool handle, one end of which is fixed on the main shaft of the drill rod, and the other end of which is connected to one end of a step drill bit, the two are clearance-matched, and the other end of the step drill bit is inserted into the inner hole of the second bushing;

[0009] The guide system comprises a guide rod, one end of which is fixed on the drilling template, and the other end of which is inserted into the inner hole of the compression spring and fixed on the spindle box body;

[0010] The spindle box body is installed on the machine tool slide rail, and the spindle box body moves left and right along the equipment slide rail.

[0011] Furthermore, a U-shaped hole is provided on the limit switch seat, and two inductive sensors are fixed in the U-shaped hole on the limit switch seat by nuts.

[0012] Furthermore, the drilling template is provided with three pin holes, the first bushing is interference fit with the upper pin hole, the second bushing is interference fit with the middle pin hole, and the guide rod is clearance fit with the lower pin hole.

[0013] Furthermore, the gland is fixed on the drilling template by a second screw.

[0014] Furthermore, one end of the tool handle is provided with a thread and is fixed to the drill rod main shaft by two fourth screws and a first nut; the other end of the tool handle is provided with a tapered hole, and one end of the step drill bit is tapered, and the two are clearance-matched.

[0015] The beneficial effects of the utility model are as follows: 1. The bridge housing is processed on a special group drilling machine, and the bridge housing flange hole and chamfer are processed by clamping at one time, and the chamfer size can be adjusted according to the thickness of the bridge housing flange to ensure the chamfer depth and stable workpiece processing quality; 2. It is suitable for drilling and chamfering of bridge housing flanges, with a simple and intelligent tooling structure, centralized processes, high production efficiency, and reduced labor intensity and production costs of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 Right view of .

[0018] In the figure: 1, induction system, 2, limit system, 3, tool system, 4, guide system, 5, spindle box body, 6, first screw, 7, limit switch seat, 8, proximity sensor, 9, pressure cover, 10, second screw, 11, return spring, 12, first bushing, 13, pin shaft, 14, third screw, 15, tool handle, 16, first nut, 17, drill rod spindle, 18, fourth screw, 19, second nut, 20, compression spring, 21, guide rod, 22, second nut, 23, limit ring, 24, drilling template, 25, step drill bit, 26, second bushing. DETAILED DESCRIPTION

[0019] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 , 2 As shown, a device for controlling the chamfering depth of a bridge housing flange drilling is composed of a sensing system 1, a limit system 2, a tool system 3, a guide system 4, a spindle box body 5, and a drilling template 24;

[0021] The induction system 1 includes a limit switch seat 7, which is fixed to the spindle box body 5 by two first screws 6, a U-shaped hole is opened on the limit switch seat 7, two proximity sensors 8 are fixed in the U-shaped hole on the limit switch seat 7 by four second nuts 22, and the drilling depth of the step drill 25 is controlled by adjusting the distance between the two induction sensors 8;

[0022] The drilling template 24 is provided with three pin holes, namely, the upper, middle and lower pin holes. The first bushing 12 is interference fit with the upper pin hole to support the pin shaft 13. The second bushing 26 is interference fit with the middle pin hole to support the step drill bit 25. The guide rod 21 is clearance fit with the lower pin hole to support the guide rod 21.

[0023] The limiting system 2 includes a pin shaft 13, and a boss is provided on the pin shaft 13. One end of the pin shaft 13 is inserted into the inner hole of the first bushing 12, and the other end is inserted into the inner hole of the gland 9 through the inner hole of the return spring 11. One end of the return spring 11 is attached to the boss on the pin shaft 13, and the other end is attached to the end surface of the inner hole of the gland 9. The gland 9 is fixed to the drilling template 24 by the second screw 10. The pin shaft 13 can slide left and right in the holes on the first bushing 12 and the gland 9; a threaded hole is provided on the pin shaft 13, and the limiting ring 23 is fixed to the pin shaft 13 by the third screw 14;

[0024] The tool system 3 includes a tool handle 15, one end of which is provided with a thread and is fixed to the drill rod spindle 17 by two fourth screws 18 and a first nut 16. The other end of the tool handle 15 has a tapered hole. One end of the step drill bit 25 is tapered and has a clearance fit with the tapered hole on the tool handle 15. A pin hole is provided on the drilling template 24. The second bushing 26 has an interference fit with the pin hole. The other end of the step drill bit 25 is inserted into the inner hole of the second bushing 26 to prevent the step drill bit 25 from deflecting.

[0025] The guide system 4 includes a guide rod 21, one end of which passes through the pin hole at the bottom of the drilling template 24 and is fixed to the drilling template 24 through the second nut 19, and the other end of the guide rod 21 passes through the inner hole of the compression spring 20 and the hole provided on the spindle box body 5 in turn, and is fixed to the spindle box body 5 through the second nut 19, so as to control the moving direction of the drilling template 24;

[0026] The spindle box body 5 is installed on the machine tool slide rail, and the hydraulic system drives the spindle box body 5 to move left and right along the equipment slide rail to complete the drilling and chamfering of the bridge housing flange.

[0027] The utility model discloses a device for controlling the chamfering depth of axle housing flange. After installation, the specific operation is as follows: according to the thickness of the axle housing flange to be processed, the distance between the two proximity sensors on the device is adjusted, and the undrilled axle housing is placed on two V-shaped irons and fixed, with one end of the flange facing the device (such as Figure 1 ), start the group multi-hole drilling processing equipment, the hydraulic slide on the equipment drives the spindle box to move to the left, and after the left end face of the pin shaft contacts the right end face of the bridge housing flange, the bridge housing pushes the pin shaft to move to the right along the first bushing level pressure cover pin hole, and when the limit ring contacts the left proximity sensor, the proximity sensor sends a signal to the equipment control cabinet, and the drill rod spindle drives the stepped drill bit to rotate and start drilling and chamfering the bridge housing flange. When the limit ring contacts the right housing proximity sensor, the proximity sensor sends a signal to the control cabinet, and the hydraulic slide drives the spindle box to start retreating, and the pin shaft moves to the left under the action of the return spring, and the device returns to its initial state. After the above operations are completed, the clamping device is released and the bridge housing is lifted off, so that the drilling and chamfering of a bridge housing flange is completed; then install the next workpiece and repeat the above cycle; adjust the distance between the two proximity sensors according to the thickness of the bridge housing flange, and you can process bridge housings with different flange thicknesses.

[0028] It should be understood that the technical features not elaborated in this specification belong to the prior art. Although the implementation methods of the utility model patent are described above in conjunction with the drawings, the utility model is not limited to the above specific implementation methods, which are only illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of the utility model without departing from the scope of protection of the purpose of the utility model and the claims, which are all within the protection scope of the utility model.

Claims

1. A device for controlling the chamfering depth of axle housing flange drilling, characterized in that: It is composed of a sensing system (1), a limit system (2), a tool system (3), a guide system (4), a spindle box body (5), and a drilling template (24); The sensing system (1) comprises a limit switch seat (7), the limit switch seat (7) is fixed on the spindle box body (5), and two proximity sensors (8) are arranged on the limit switch seat (7); A first bushing (12) is provided at the upper portion of the drilling template (24), and a pin shaft (13) is provided in the first bushing (12); a second bushing (26) is provided at the middle portion of the drilling template (24), and a stepped drill bit (25) is provided in the second bushing (26); a guide rod (21) is provided at the lower portion of the drilling template (24); The limiting system (2) comprises a pin shaft (13), a boss is provided on the pin shaft (13), one end of the pin shaft (13) is inserted into the inner hole of the first bushing (12), and the other end is inserted into the inner hole of the pressure cover (9) through the inner hole of the return spring (11), one end of the return spring (11) is attached to the boss of the pin shaft (13), and the other end is attached to the end surface of the inner hole of the pressure cover (9), the pressure cover (9) is fixed on the drilling template (24), and the pin shaft (13) slides left and right in the holes on the first bushing (12) and the pressure cover (9); a limiting ring (23) is provided on the pin shaft (13); The tool system (3) comprises a tool handle (15), one end of the tool handle (15) is fixed on the drill rod main shaft (17), the other end of the tool handle (15) is connected to one end of a step drill bit (25), the two are clearance-matched, and the other end of the step drill bit (25) is inserted into the inner hole of the second bushing (26); The guide system (4) comprises a guide rod (21), one end of the guide rod (21) is fixed to the drilling template (24), and the other end of the guide rod (21) is inserted into the inner hole of the compression spring (20) and fixed to the spindle box body (5); The spindle box body (5) is mounted on a machine tool slide rail, and the spindle box body (5) moves left and right along the equipment slide rail.

2. The device for controlling the chamfering depth of axle housing flange drilling according to claim 1, characterized in that: The limit switch seat (7) is provided with a U-shaped hole, and the two proximity sensors (8) are fixed in the U-shaped hole on the limit switch seat (7) by nuts.

3. The device for controlling the chamfering depth of axle housing flange drilling according to claim 1, characterized in that: The drilling template (24) is provided with three pin holes, the first bushing (12) is interference fit with the upper pin hole, the second bushing (26) is interference fit with the middle pin hole, and the guide rod (21) is clearance fit with the lower pin hole.

4. The device for controlling the chamfering depth of axle housing flange drilling according to claim 1, characterized in that: The gland (9) is fixed to the drilling template (24) by means of a second screw (10).

5. The device for controlling the chamfering depth of axle housing flange drilling according to claim 1, characterized in that: One end of the tool handle (15) is provided with a thread and is fixed to the drill rod main shaft (17) via two fourth screws (18) and a first nut (16); the other end of the tool handle (15) is provided with a tapered hole, and one end of the step drill bit (25) is tapered, and the two are clearance-matched.

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