CN116786862A - Drilling positioning device of drive axle thrust rod support - Google Patents

Abstract

The drilling positioning device of the drive axle thrust rod bracket includes: a base; a plate-shaped positioning seat with a mounting hole, and a positioning pin that matches the inner wall of the mounting hole with a clearance. The two sides of the positioning pin Each end forms a positioning part. The outer periphery of the positioning part is provided with an annular and outwardly protruding mating part. The projection of the outer contour of the mating part on the axial section of the positioning pin is an arc shape with the middle part protruding outward. , the positioning base is also provided with a limiting component to prevent the positioning pin from falling off at both ends of the mounting hole; two support seats are located on both sides of the positioning seat, the support seats are fixed on the base and their tops form a support plane; There are two clamping assemblies located on both sides of the positioning seat. The clamping assembly includes a clamping jaw; a driving unit is used to drive the clamping jaw to move. The invention improves the drilling accuracy of the thrust rod bracket and the efficiency of clamping the thrust rod bracket.

Description

Drilling positioning device for drive axle thrust rod bracket

Technical field

The invention relates to the technical field of processing vehicle parts, and in particular to a drilling positioning device for a drive axle thrust rod bracket.

Background technique

The upper thrust rod bracket and the lower thrust rod bracket are important parts of the drive axle assembly. In order to meet the requirements of vehicle assembly, the upper and lower thrust rod brackets usually need to be drilled after they are processed and formed. In order to improve the drilling accuracy, When drilling the upper thrust rod bracket and the lower thrust rod bracket, it is usually necessary to use a special positioning fixture to clamp and fix them. The existing positioning fixtures use fixed positioning pins and support planes to position the thrust rod bracket. , specifically, the positioning pin is inserted into the hole on the thrust rod bracket, and then a support plane is used to support a surface parallel to the central axis of the hole on the thrust rod bracket. Theoretically, this positioning method can ensure Ensure the accuracy of drilling, but in fact, due to certain processing errors of the thrust rod bracket, this structure is difficult to adapt to the processing errors of the thrust rod bracket, which in turn causes the surface and supporting surface of the thrust rod bracket to be incomplete after clamping. They are close together, which ultimately affects the accuracy of drilling, making it difficult for the thrust rod bracket to meet the requirements of vehicle assembly.

Contents of the invention

In view of the shortcomings of the prior art, the object of the present invention is to provide a drilling positioning device for a drive axle thrust rod bracket, which can improve the drilling accuracy of the thrust rod bracket.

In order to achieve the above objects, the present invention adopts the following technical solutions:

Drilling positioning device for drive axle thrust rod bracket, including:

base;

The positioning seat is fixed on the base. The positioning seat is plate-shaped and includes two opposite side walls. The positioning seat is provided with a mounting hole extending from one side wall to the other side wall. A mounting hole is inserted into the mounting hole. A positioning pin that fits with the inner wall of the mounting hole. The two ends of the positioning pin respectively form a positioning portion protruding from the two side walls. The outer periphery of the positioning portion is provided with an annular and outwardly protruding mating portion. The projection of the outer contour of the outer contour on the axial section of the positioning pin is an arc shape with the middle part protruding outward, and the positioning seat is also provided with a limiting component to prevent the positioning pin from falling off from both ends of the mounting hole;

Two support seats are located on both sides of the positioning seat. The support seats are fixed on the base and their tops form a support plane;

Two clamping components located on both sides of the positioning seat, the clamping components include clamping jaws;

The driving unit is used to drive the clamping jaw toward the side wall of the positioning seat to clamp the thrust rod bracket, and to drive the clamping jaw to move away from the side wall of the positioning seat to loosen the thrust rod bracket.

The limit component includes a movable rod and a limit pin. The movable rod is movably connected to the positioning seat from top to bottom. The extension direction of the movable rod is perpendicular to the axial direction of the positioning pin, and the lower end of the movable rod is connected to the positioning pin. on; the movable rod is provided with a limit groove extending along its length direction, the limit pin is fixed on the positioning seat and its inner end is slidably inserted into the limit groove.

The limiting assembly also includes an elastic element, which is arranged between the movable rod and the positioning seat and is used to provide an elastic stress to push the movable rod downward.

The positioning seat is provided with a guide hole extending downward from its top surface to the installation hole. The movable rod is inserted into the guide hole. The elastic element is a set of springs located outside the movable rod. The top end of the spring is pressed against the positioning seat. The upper and lower ends are pressed against the lower end of the movable rod.

The clamping assembly also includes a mounting base that is installed on the base and can slide along the length direction of the base. The clamping jaw is fixedly connected to the top of the mounting base. The drive unit is used to drive the two mounting bases toward the positioning base at the same time, or away from the positioning base at the same time. The direction of the positioning base moves.

The driving unit includes a first cylinder and two levers. The middle part of the lever is hinged on the base. The tops of the two levers are respectively clamped on the two mounting seats. The first cylinder is used to drive the bottoms of the two levers to swing.

The drive unit also includes two slide blocks that can slide along the length direction of the base, and a movable block located between the two slide blocks. The first cylinder is used to drive the movable block to move along the width direction of the base; both sides of the movable block form a The first inclined plane, the angle between the two first inclined planes and the width direction of the base is equal, a second inclined plane is provided on the two sliders respectively, the two second inclined planes are respectively close to the two first inclined planes, the bottoms of the two levers They are respectively clamped on the two sliders.

One of the first inclined surface and the second inclined surface is provided with a chute with a dovetail-shaped cross-section, and the other is provided with a sliding boss embedded in the chute and consistent with the cross-sectional shape of the chute.

The driving unit includes two second cylinders, and the piston rods of the two second cylinders are respectively connected to the two mounting seats.

The support base includes two support parts distributed on both sides of the base. On the same side of the positioning base, the clamping claw is located between the two support parts.

The beneficial effects of the present invention are:

In the present invention, since the fitting portion of the positioning pin that matches the hole on the thrust rod bracket is arc-shaped, the inner wall of the hole on the thrust rod bracket is in line contact with each other, so that the thrust rod bracket can adapt to the supporting surface of the top of the supported seat. Support, and ensure that the drilled part on the thrust rod bracket has a high degree of fit with the supporting surface, thereby improving the drilling accuracy of the thrust rod bracket. At the same time, the positioning pin can float up and down, so that the positioning pin can quickly cooperate with the thrust rod bracket, which improves the efficiency of the thrust rod bracket clamping.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is an enlarged view of position A in Figure 1;

Figure 3 is a view from direction B in Figure 1;

Figure 4 is a view from direction C in Figure 1;

Figure 5 is a schematic diagram of the working state of the present invention.

Detailed ways

Below, the present invention will be further described with reference to the accompanying drawings and specific embodiments:

As shown in Figures 1, 2, 3 and 4, it is a drilling positioning device for a drive axle thrust rod bracket of the present invention, which includes a base 10, a positioning seat 20, two support seats 40, two clamping assemblies and Driving unit, the base 10 is the installation base part of the entire positioning device. The positioning base 20 is fixed in the middle of the length direction of the base 10 (the X direction in the figure). The positioning base 20 is plate-shaped and includes two opposite side walls. A mounting hole 201 is provided on the positioning base. The extension direction of the mounting hole 201 is consistent with the length direction of the base 10 . The mounting hole 201 extends from one side wall of the positioning base 20 to the other side wall. Inside the mounting hole 201 There is a positioning pin 21 connected therethrough. The positioning pin 21 includes a middle section 211 and two positioning parts 212 respectively located at both ends of the middle section 211. The length of the middle section 211 is equivalent to the depth of the installation hole 201, and it is completely placed inside the installation hole 201. , the two positioning parts 212 protrude from the two ends of the mounting hole 201 and protrude from the two side walls of the positioning seat 20 respectively. The outer diameter of the middle section 211 is smaller than the inner diameter of the mounting hole 201, so that the positioning pin 21 is in contact with the mounting hole. The inner wall of 201 has a clearance fit, that is, the positioning pin 21 has a small swing amplitude relative to the positioning seat 20. An annular and outwardly protruding matching portion 213 is provided on the outer periphery of each positioning portion 212. The projection of the part 213 on the axial cross-section of any positioning pin is in the shape of an arc with the middle part protruding outward. That is, the fitting part 213 is a rotary structure with the central axis of a certain positioning pin 21 as the axis. In addition, in the positioning The seat 20 is also provided with a limiting component. The limiting component is used to limit the freedom of axial movement of the positioning pin 21 in the mounting hole 201 to prevent the positioning pin 21 from falling off from both ends of the mounting hole 201 . The two support seats 40 are fixed on the base and are respectively located on both sides of the positioning seat 20 . The top of each support seat 40 forms a support surface 41 . The two clamping assemblies are respectively located on both sides of the positioning base 20. The clamping assembly includes a clamping jaw 31. The driving unit is used to drive the clamping jaw 31 to move. Specifically, driven by the driving unit, the clamping jaw 31 can move toward the positioning base. The side walls of 20 are brought together to clamp the thrust rod bracket 90. Driven by the drive unit, the clamping claw 31 can move in a direction away from the positioning seat 20 to loosen the thrust rod bracket 90. The drive unit is a power output part. To drive the two clamping jaws 31 to move toward the positioning seat 20 at the same time or to move away from the positioning seat 20 at the same time, the driving unit can also be two independent power output parts to drive the two clamping jaws 31 to move simultaneously.

As shown in Figure 5, when the thrust rod bracket 90 is clamped in the present invention, the hole 91 on the thrust rod bracket 90 is aligned with the positioning pin 21, so that the positioning portion 212 of the positioning pin 21 is inserted into the hole 91 until the thrust rod The surface of the bracket 90 that is opposite to the side wall of the positioning seat 20 is against the side wall of the positioning seat 20. In this way, a thrust rod bracket 90 is respectively provided on both sides of the positioning seat 20, that is, two thrust rod brackets 90 are provided at the same time. For clamping and positioning, the positioning pin 21 cooperates with the hole 91 to limit the movement of the thrust rod bracket 90 in the height direction of the base 10 (i.e., the Z direction in the figure) and the width direction of the base 10 (i.e., the Y direction in the figure). However, since the fitting portion 213 on the positioning portion 212 is in line contact with the inner wall of the hole 91, after the positioning portion 212 is inserted into the hole 91, the thrust rod bracket 90 can move relative to each other within a smaller swing range. When the positioning base 20 swings up and down, the surface 92 on the thrust rod bracket 90 parallel to the axis of the hole 91 is supported by the supporting surface 41 on the top of the support base 40. When the thrust rod bracket 90 can swing up and down within a smaller swing range, Next, ensure that the support surface 41 and the surface 92 fit well. Finally, use the clamping claw 31 to press the thrust rod bracket 90 towards the positioning seat 20 on the side of the thrust rod bracket 90 away from the positioning seat 20, that is, use the clamping claw 31 The thrust rod bracket 90 is clamped with the positioning seat 20; since the inner wall of the hole 91 on the thrust rod bracket 90 and the matching portion 213 on the positioning pin 21 are in line contact, the thrust rod bracket 90 can adaptively swing up and down a relatively large distance. The thrust rod bracket 90 is supported and pushed through the supporting surface 41 at the top of the supporting seat 40, that is, the thrust rod bracket 90 is positioned using the supporting surface 41, and when drilling the hole 93 for the thrust rod bracket 90, the thrust rod bracket 90 is drilled. The part fits well with the supporting surface 41, thereby improving the drilling accuracy of the hole 93. In addition, when the positioning portion 212 of the positioning pin 21 is inserted into the hole 91, since the positioning pin 21 has a clearance fit with the inner wall of the mounting hole 201, the positioning pin 21 can move up and down relative to the positioning seat 20 in the height direction, that is, positioning. The positioning portion 212 on the pin 21 has a small degree of freedom to move up and down, so that it can better penetrate into the hole 91 and improve the efficiency of clamping the thrust rod bracket 90 .

In order to adapt to the shape of the transaxle thrust rod bracket, the support seat 40 may include support parts distributed on both sides of the base 10 . On the same side of the positioning seat 20 , the clamping jaw 31 is located between the two support parts.

The above-mentioned limiting component includes a movable rod 22 and a limiting pin 24. The movable rod 22 is movably connected to the positioning seat 20 from top to bottom, and its extension direction is consistent with the height direction of the base 10, that is, the extension of the movable rod 22. The direction is perpendicular to the axial direction of the positioning pin 21, and the lower end of the movable rod 22 is connected to the positioning pin 21; in addition, the movable rod 22 is also provided with a limit groove 221 extending along the length direction, and the limit pin 24 is fixed on the positioning pin 21. on the seat 20, and the inner end of the limit pin 24 is slidably inserted into the limit groove 221, and the limit pin 24 can slide in the limit groove 221, that is, by the cooperation of the limit pin 24 and the limit groove 221, The range of up and down movement of the movable rod 22 is limited, and then the range of the up and down movement of the positioning pin 21 is limited. The limiting component also includes a spring 23. The spring 23 is provided between the movable rod 22 and the positioning seat 20. It is used to provide an elastic stress to push the movable rod 22 downward. Specifically, a spring 23 is provided on the positioning seat 20. A guide hole extends downward from its top surface. The guide hole extends to the middle of the above-mentioned mounting hole 201. The movable rod 22 is connected in the guide hole. The guide hole is used to guide the up and down movement of the movable rod 22. The spring 23 is set in the movable rod 22. The outside of the rod 22 has its lower end against the lower end of the movable rod 22 and its upper end against the positioning seat 20. The spring 23 always pushes the movable rod 22 to exert a downward elastic stress so that the positioning pin 21 forms a The elastic floating structure allows the positioning pin 21 to float up and down when cooperated with the thrust rod bracket 90, and can be reset in time when the thrust rod bracket 90 is detached. In other embodiments, the above-mentioned spring 23 can also be replaced by other elastic elements, such as elastic rubber blocks.

The above-mentioned clamping assembly also includes a mounting base 30. The mounting base 30 is installed on the base 10 and can slide along the length direction of the base 10. The clamping claw 31 is fixed on the top of the mounting base 30. The driving unit is used to drive the two clamping members. The mounting seat 30 of the component moves toward the positioning seat 20 at the same time, or moves away from the positioning seat 20 at the same time. Specifically, the driving unit includes a cylinder 50 and two levers 12. The middle parts of the two levers 12 are hinged at On the base 10, the tops of the two levers 12 are respectively clamped on the bottoms of the two mounting seats 30. The cylinder 50 is used to drive the bottoms of the two levers 12 to swing, and the levers 12 are pivotally connected to the base 10, so that the levers 12 form A lever structure, the cylinder 50 drives the bottoms of the two levers 12 to swing inward at the same time, then the tops of the two levers 12 drive the two mounting bases 30 to move in the direction away from the positioning seat 20. When the cylinder 50 drives the two levers 12 The bottom swings toward the outside at the same time, and the mounting base 30 is driven by the tops of the two levers 12 to move closer to the positioning base 20 at the same time. The drive unit also includes two slide blocks 11 and a movable block 51. Both slide blocks 11 are installed on the base 10 and can slide along the length direction of the base 10. The movable block 51 is located between the two slide blocks 11 and is connected to the cylinder. On the telescopic rod 50, the cylinder 50 drives the movable block 51 to move along the width direction of the base 10. The movable block 51 is set in a V-shaped structure, with a first inclined plane formed on both sides, and two first inclined planes. The included angles between the width directions of the base 10 are equal. The sides of the two sliders 11 facing the movable block 51 are set as a second inclined plane. The second inclined planes on the two sliders 11 are respectively abutted against both sides of the movable block 51 . On the first inclined surface of the side, the bottoms of the two levers 12 are respectively clamped on the two slide blocks 11; a slide groove 111 is provided on the first inclined surface, and a boss 511 is provided on the second inclined surface, wherein the slide groove 111 Both the cross section and the cross section of the boss 511 are dovetail-shaped, and the boss 511 is clamped in the chute 111. When the movable block 51 moves along the width direction of the base 10, the first inclined plane and the second inclined plane cooperate to move the The two sliders 11 are pushed outward at the same time, or the two sliders 11 are pulled inward through the boss 511, and then the two sliders 11 move toward each other at the same speed, or move away from each other, and then drive the two dials. Rods 12 swing simultaneously.

In other embodiments, the above-mentioned driving unit may also include two cylinders. The piston rods of the two cylinders are respectively connected to the two mounting bases 30. The two cylinders are started simultaneously, and then the two mounting bases 30 are driven to the same direction. Speeds move toward or away from each other.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still make modifications to the foregoing embodiments. The recorded technical solutions may be modified, or some of the technical features thereof may be equivalently replaced, but these modifications or substitutions shall not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims (10)

1. Drilling positioner of transaxle distance rod support, its characterized in that includes:

a base;

the positioning seat is fixed on the base and is plate-shaped and comprises two opposite side walls, a mounting hole extending from one side wall to the other side wall is formed in the positioning seat, a positioning pin in clearance fit with the inner wall of the mounting hole is connected in the mounting hole in a penetrating manner, two ends of the positioning pin respectively form a positioning part protruding from the two side walls, an annular and outwards protruding matching part is arranged at the outer periphery of the positioning part, the projection of the matching part on the axial section of the positioning pin is in an arc shape with the middle part protruding outwards, and a limiting assembly used for preventing the positioning pin from falling off from the two ends of the mounting hole is also arranged on the positioning seat;

two supporting seats respectively positioned at two sides of the positioning seat, wherein the supporting seats are fixed on the base, and the tops of the supporting seats form a supporting plane;

two clamping assemblies respectively positioned at two sides of the positioning seat, wherein each clamping assembly comprises a clamping jaw;

the driving unit is used for driving the clamping jaw to draw close towards the side wall of the positioning seat so as to clamp the thrust rod support, and driving the clamping jaw to move away from the side wall of the positioning seat so as to loosen the thrust rod support.

2. The drilling positioning device of the drive axle thrust rod bracket according to claim 1, wherein the limiting assembly comprises a movable rod and a limiting pin, the movable rod is movably connected to the positioning seat in a penetrating manner from top to bottom, the extending direction of the movable rod is perpendicular to the axial direction of the positioning pin, and the lower end part of the movable rod is connected to the positioning pin; the movable rod is provided with a limiting groove extending along the length direction of the movable rod, the limiting pin is fixed on the positioning seat, and the inner side end of the limiting pin is slidably connected in the limiting groove in a penetrating way.

3. The drill positioning device of the drive axle thrust rod bracket of claim 2, wherein the stop assembly further comprises an elastic member disposed between the movable rod and the positioning seat for providing an elastic stress urging the movable rod downward.

4. A drilling positioning device for a thrust rod bracket of a drive axle according to claim 3, wherein the positioning seat is provided with a guide hole extending downwards from the top end face to the mounting hole, the movable rod is connected in the guide hole in a penetrating way, the elastic element is a spring arranged outside the movable rod, the top end part of the spring is propped against the positioning seat, and the bottom end part of the spring is propped against the lower end part of the movable rod.

5. The device for positioning a drilled hole in a carrier of a thrust rod of a drive axle according to claim 1, wherein the clamping assembly further comprises a mounting seat mounted on the base and slidable along a longitudinal direction of the base, the clamping jaw is fixedly connected to a top of the mounting seat, and the driving unit is configured to drive the two mounting seats to move toward the positioning seat simultaneously or away from the positioning seat simultaneously.

6. The drilling positioning device of the drive axle thrust rod bracket according to claim 5, wherein the driving unit comprises a first cylinder and two shifting rods, the middle parts of the shifting rods are hinged on the base, the tops of the two shifting rods are respectively clamped on the two mounting seats, and the first cylinder is used for driving the bottoms of the two shifting rods to swing.

7. The drilling positioning device of the drive axle thrust rod bracket according to claim 6, wherein the driving unit further comprises two sliding blocks capable of sliding along the length direction of the base, and a movable block positioned between the two sliding blocks, and the first cylinder is used for driving the movable block to move along the width direction of the base; two sides of the movable block respectively form a first inclined plane, the included angles between the two first inclined planes and the width direction of the base are equal, two sliding blocks are respectively provided with a second inclined plane, the two second inclined planes respectively lean against the two first inclined planes, and the bottoms of the two deflector rods are respectively clamped on the two sliding blocks.

8. The drill positioning device of a drive axle thrust rod bracket according to claim 7, wherein one of the first inclined plane and the second inclined plane is provided with a chute with a dovetail-shaped cross section, and the other is provided with a boss which is slidably embedded in the chute and is consistent with the cross section of the chute.

9. The drill positioning device of a drive axle thrust rod bracket according to claim 1, wherein the driving unit comprises two second cylinders, and piston rods of the two second cylinders are respectively connected to the two mounting seats.

10. The drill positioning device of a drive axle thrust rod bracket according to claim 1, wherein the support base comprises two support portions distributed on both sides of the base, and the clamping jaw is located between the two support portions on the same side of the positioning base.