CN204235229U - A jig for fine milling top surface processing of automobile steering knuckle - Google Patents

Abstract

The utility model discloses a fixture for machining the top surface of the automobile steering knuckle by fine milling, comprising a bottom plate, a disc-shaped pad, a pressing mechanism for pressing the automobile steering knuckle on the pad, and a positioning mechanism for positioning the automobile steering knuckle, and the top surface of the pad is a positioning plane. The fixture for machining the top surface of the automobile steering knuckle by fine milling of the utility model arranges the pad on the bottom plate to replace the long strip plate to reduce unnecessary redundant contact area, and at the same time, a positioning mechanism is added on this basis for positioning, so that the actual position of the steering knuckle in the clamping can be limited, thereby greatly reducing the trouble of the traditional tooling that the steering knuckle positioning is not well determined due to the randomness of the clamping position, laying a solid foundation for reducing unnecessary system errors in the process of fine milling the top surface of the steering knuckle, and improving the clamping efficiency.

Description

A jig for fine milling top surface processing of automobile steering knuckle

technical field

The utility model relates to a clamping device, in particular, the utility model relates to a clamp for fine milling top surface processing of an automobile steering knuckle.

Background technique

At present, in the machining process of automobile steering knuckle, finishing milling top surface is a very important process in the processing process, and its machining accuracy will directly affect the product quality of automobile steering knuckle. There are two main influences, one One is the complex space structure of the steering knuckle, and the other is the quality of the fixture. In the process of finishing the top surface of the general finish milling, the common combination fixture on the machine tool is often used to realize the clamping of the tooling. Due to the complex space structure of the steering knuckle, this requires the operator to have very skilled technology, resulting in low clamping efficiency. Therefore, it is very important to choose a special fixture for the precision milling top surface of the steering knuckle that can be clamped quickly.

Utility model content

The utility model provides a fixture for fine milling and top surface processing of an automobile steering knuckle, aiming at improving the clamping efficiency of the automobile steering knuckle.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a jig for fine milling top surface processing of automobile steering knuckle, including a bottom plate, and a disc-shaped backing plate is arranged on the bottom plate for pressing the steering knuckle of the automobile. The pressing mechanism on the backing plate and the positioning mechanism for positioning the steering knuckle of the automobile, the top surface of the backing plate is a positioning plane.

The backing plate is fixed on the top surface of the bottom plate by screws.

The positioning mechanism includes two positioning pins arranged on the bottom plate, one of which is a circular positioning pin and the other is a diamond-shaped positioning pin, and the two positioning pins are located on the same side of the backing plate.

The compression mechanism includes a first compression mechanism and a second compression mechanism, and there are two second compression mechanisms, and one of the second compression mechanisms is located on one side of the circular positioning pin, and the other is the second compression mechanism. Two pressing mechanisms are located on one side of the diamond-shaped positioning pin.

The first pressing mechanism includes a first support column vertically arranged on the bottom plate, a first pressure plate sleeved on the first support column and used to compress the steering knuckle of the automobile, and a first pressure plate sleeved on the first support column. The first cylindrical coil spring on the supporting column and located below the first pressing plate, and the locking nut which is threadedly connected with the first supporting column and located above the first pressing plate.

The first pressing plate is elongated.

The first pressing mechanism also includes a first adjustable supporting nail vertically arranged on the bottom plate and adjusting the height of the first pressing plate.

The first pressing mechanism is opposite to the second pressing mechanism on the side of the circular positioning pin, and is located on both sides of the backing plate.

The second pressing mechanism includes a second supporting column vertically arranged on the bottom plate, a second pressing plate sleeved on the second supporting column and used to compress the steering knuckle of the automobile, sleeved on the second The second cylindrical helical spring on the supporting column and located below the second pressing plate and the lock nut which is threadedly connected with the second supporting column and located above the second pressing plate, the second pressing plate is a gooseneck type pressing plate.

The second pressing mechanism further includes a second adjustable supporting nail vertically arranged on the bottom plate and adjusting the height of the second pressing plate.

In the jig for fine milling and top surface processing of automobile steering knuckle of the utility model, a backing plate is arranged on the bottom plate to replace the strip plate to reduce unnecessary redundant contact area. The actual position in the clamping can be limited, which greatly reduces the trouble of difficult positioning of the steering knuckle due to the randomness of the clamping position of the traditional tooling, and reduces unnecessary system errors in the process of fine milling the top surface of the steering knuckle It has laid a solid foundation and improved the clamping efficiency; this fixture also has the advantages of simple structure and convenient operation. When clamping the steering knuckle of the car every time, just put the steering knuckle at the set position with two holes on one side and start the hydraulic cylinder. That is, the clamping efficiency is high, and the employees who process the product can go to work without training, and the processing efficiency is high and the use is convenient.

Description of drawings

This manual includes the following drawings, the contents shown are:

Fig. 1 is the structural representation of clamp of the present utility model;

Fig. 2 is the top view of Fig. 1;

Figure 3 is a schematic diagram of the connection between the positioning bush and the pin;

Labeled in the figure:

1. Bottom plate; 2. First pressure plate; 3. Round positioning pin; 4. Backing plate; 5. Diamond-shaped positioning pin; 6. Second pressure plate; 7. First adjustable supporting nail; 8. Lock nut; 9 10. Flat washer; 11. Tapered washer; 12. The second adjustable supporting nail; 13. The first supporting column; 14. The second supporting column; 15. The second cylindrical helical spring; 16 , bushing; 17, pin.

Detailed ways

Next, with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the present utility model will be further described in detail, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present utility model , and contribute to its implementation.

As shown in Figures 1 and 2, the utility model is a jig for fine milling the top surface of an automobile steering knuckle, which includes a bottom plate 1, on which a disc-shaped backing plate 4 is provided for pressing the steering knuckle of an automobile. The pressing mechanism tightly on the backing plate 4 and the positioning mechanism for positioning the steering knuckle of the automobile, the top surface of the backing plate 4 is a positioning plane. When clamping, place the car steering knuckle to be processed on the positioning plane formed by the top surface of the backing plate 4 with its lower surface facing down, and the top surface of the backing plate 4 must be ground on the same plane to ensure that it forms a positioning surface The flatness meets the technical requirements for adjusting the steering knuckle processing position. The size of the backing plate 4 is equivalent to the size of the lower surface of the automobile steering knuckle, and the backing plate 4 is used to replace the long strip to reduce unnecessary redundant contact area, ensure stable and accurate positioning, and reduce errors.

Specifically, the base plate 1 has the same size as the steering knuckle, and is a rectangular structure. The top surface of the base plate 1 is a plane, as shown in Figure 2. The location of the lower surface of the car steering knuckle corresponds.

Preferably, the backing plate 4 is fixed on the bottom plate 1 by four screws, and is fixed by screws. When the backing plate 4 wears too much due to multiple clamping, it can be conveniently replaced in time.

The positioning mechanism includes two positioning pins arranged on the bottom plate 1 , one of which is a circular positioning pin 3 and the other is a diamond-shaped positioning pin 5 , and the two positioning pins are located on the same side of the backing plate 4 .

As shown in Figures 1 and 2, the positioning mechanism includes two positioning pins arranged on the base plate 1, wherein the positioning portion of one positioning pin is cylindrical, that is, a circular positioning pin 3, and the positioning portion of the other positioning pin is Rhombus is the rhombus positioning pin 5. As shown in FIG. 2 , the two positioning pins are located on the same side of the backing plate 4 , and there is a certain distance between the two positioning pins. Positioning pins are arranged on the bottom plate 1 to ensure more accurate and reliable positioning when the steering knuckle of the automobile to be processed is clamped. Nylon positioning pads are also installed on the two positioning pins to protect the car steering knuckle to be processed from unnecessary scratches. When the positioning pads are excessively deformed during multiple clamping, they can be replaced in time.

The pressing mechanism of this clamp includes a first pressing mechanism and a second pressing mechanism, and there are two second pressing mechanisms, and one of the second pressing mechanisms is located on one side of the circular positioning pin 3, and is located on the pad On the same side of the plate 4, the first pressing mechanism is opposite to the second pressing mechanism and the circular positioning pin 3, and is located on the other side of the backing plate 4; the other second pressing mechanism is located on one side of the diamond-shaped positioning pin 5. side, and the second pressing mechanism is located between the diamond-shaped positioning pin 5 and the backing plate 4 .

As shown in Figures 1 and 2, the first pressing mechanism includes a first supporting column 13 vertically arranged on the bottom plate 1, a first pressing plate sleeved on the first supporting column 13 and used to press the steering knuckle of the automobile 2. The first cylindrical coil spring 9 sleeved on the first support column 13 and located below the first pressure plate 2 , and the lock nut 8 screwed to the first support column 13 and located above the first pressure plate 2 .

As shown in Figures 1 and 2, the first supporting column 13 vertically arranged on the bottom plate 1 is a double-ended stud, and the first pressing plate 2 is locked by the locking nut 8 arranged on the first supporting column 13. When clamping, the first pressing plate 2 can be pressed on the automobile steering knuckle to be processed by tightening the locking nut 8 downward. The first support column 13 is threadedly connected with the bottom plate 1 at the lower end, and is tightened by nuts. A first cylindrical coil spring 9 is sleeved on the first support column 13, and the first cylindrical coil spring 9 is located between the bottom surface of the first pressing plate 2 and the top surface of the bottom plate 1, and the first cylindrical coil spring 9 is used for the first Platen 2 exerts an upward thrust. The first pressure plate 2 is a strip-shaped structure. Due to the precision and particularity of parts such as automobile steering knuckles, a pressure pad made of nylon is also installed on the pressure surface of the first pressure plate 2 to prevent the clamp from being installed. When clamping, excessive permanent pressure deformation will be produced on the steering knuckle of the automobile, and when the pressure pad is excessively deformed during multiple clamping, it can be replaced in time.

As shown in Figures 1 and 2, since the first pressure plate 2 is provided with a waist-shaped hole for the first support column 13 to pass through, a flat washer 10 and a tapered washer are also sleeved on the first support column 13. 11. The flat washer 10 is clamped between the first cylindrical coil spring 9 and the bottom surface of the first pressure plate 2, and the conical washer 11 is clamped between the lock nut 8 and the top surface of the first pressure plate 2. The size of the flat washer 10 is wider than the width of the waist-shaped hole on the first pressure plate 2, thereby preventing the upper end of the first cylindrical coil spring 9 from being embedded in the waist-shaped hole, affecting the fastening of the first pressure plate 2, and avoiding the first Large friction occurs between the cylindrical coil spring 9 and the first pressing plate 2 to damage the first pressing plate 2 .

As shown in Figures 1 and 2, the base plate 1 is also provided with a first adjustable supporting nail 7 for adjusting the height of the first pressing plate 2, and the first adjustable supporting nail 7 is parallel to the first supporting column 13 .

As shown in Figures 1 and 2, the second pressing mechanism includes a second supporting column 14 vertically arranged on the bottom plate 1, a second pressing plate sleeved on the second supporting column 14 and used to compress the steering knuckle of the automobile 6. The second cylindrical coil spring 15 sleeved on the second support column 14 and located below the second pressure plate 6 and the lock nut 8 that is threadedly connected with the second support column 14 and located above the second pressure plate 6, the second Pressing plate 6 is a gooseneck pressing plate.

As shown in Figures 1 and 2, the second support column 14 vertically arranged on the bottom plate 1 is a double-ended stud, and the second pressure plate 6 is locked by the lock nut 8 arranged on the second support column 14, and the When clamping, by tightening down the locking nut 8, the second pressing plate 6 can be pressed on the automobile steering knuckle to be processed. The second support column 14 is threadedly connected with the bottom plate 1 at the lower end, and is tightened by nuts. A second cylindrical helical spring 15 is sleeved on the second support column 14, and the second cylindrical helical spring 15 is positioned between the bottom surface of the second pressing plate 6 and the top surface of the base plate 1, and the second cylindrical helical spring 15 is used for the second The pressure plate 6 exerts an upward thrust. Due to the precision and particularity of the car steering knuckle itself, a pressure pad made of nylon is installed on the pressing surface of the second pressure plate 6 to prevent excessive permanent damage to the car steering knuckle when the clamp is clamped. Pressure deformation, and when the pressure pad is too deformed in multiple clamping, it can be replaced in time.

As shown in Figure 1, the second pressing plate 6 of the second pressing mechanism is a gooseneck pressing plate. The pressing plate of this structure can play a certain positioning role when the automobile steering knuckle to be processed is clamped, and it is convenient to adjust the pressing position. . Moreover, the length of the second support column 14 is smaller than the length of the first support column 13 .

As shown in Figures 1 and 2, since the second pressure plate 6 is provided with a waist-shaped hole for the second support column 14 to pass through, a flat washer 10 and a tapered washer are also sleeved on the second support column 14. 11. The flat washer 10 is clamped between the second cylindrical coil spring 15 and the bottom surface of the second pressure plate 6 , and the conical washer 11 is clamped between the lock nut 8 and the top surface of the second pressure plate 6 . The size of the flat washer 10 is wider than the width of the waist-shaped hole on the second pressure plate 6, thereby preventing the upper end of the second cylindrical coil spring 15 from being embedded in the waist-shaped hole, affecting the fastening of the second pressure plate 6, and avoiding the second Large friction occurs between the cylindrical coil spring 15 and the second pressing plate 6 to damage the second pressing plate 6 .

As shown in Figure 1 and Figure 2, the second adjustable support nail 12 that adjusts the height of the second pressing plate 6 is also provided on the bottom plate 1, and the second adjustable support nail 12 is parallel to the second support column 14 , the length of the second adjustable supporting nail 12 is smaller than the length of the first adjustable supporting nail 7 .

As shown in Figure 2, the length direction of the first pressing plate 2 of the first pressing mechanism is parallel to the length direction of the second pressing plate 6 of the second pressing mechanism positioned at the side of the circular positioning pin 3, and both are in line with The length direction of the second pressing plate 6 of the second pressing mechanism located beside the rhombic positioning pin 5 is vertical.

As shown in Figure 1 and Figure 2, in order to facilitate the reliable installation of the entire fixture in the machine tool, a round hole is machined at both ends of the bottom plate 1 of the fixture, so that the device can be fixed on the machine tool by traditional methods, and installed in the hole Bushing 16, bushing 16 can be replaced in time when the amount of wear is too large.

As shown in Figures 1 and 3, the bushing 16 has a ring-shaped structure, and the bushing 16 is embedded in the through hole provided on the bottom plate 1. In order to ensure that the bushing 16 is reliably fixed, between the bushing 16 and the inner wall of the through hole A pin 17 can also be inlaid, and the pin 17 makes the bushing 16 and the through hole be a tight fit, which can prevent the bushing 16 from slipping off.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as the various insubstantial improvements made by adopting the method concept and technical solution of the present utility model; within the scope of protection.

Claims (10)

1. a spindle finish-milling end face fixture for processing, it is characterized in that: comprise base plate, base plate is provided with a discoidal backing plate, for spindle being pressed on the hold-down mechanism on backing plate and being used for the detent mechanism to spindle location, the end face of backing plate is plane of orientation.

2. spindle finish-milling end face fixture for processing according to claim 1, is characterized in that: described backing plate is fixed by screws in the end face of described base plate.

3. spindle finish-milling end face fixture for processing according to claim 1 and 2, it is characterized in that: described detent mechanism comprises two alignment pins be located on described base plate, one of them is circular alignment pin, another is diamond positioning pin, and two alignment pins are positioned at the same side of described backing plate.

4. spindle finish-milling end face fixture for processing according to claim 3, it is characterized in that: described hold-down mechanism comprises the first hold-down mechanism and the second hold-down mechanism, second hold-down mechanism is provided with two, and one of them second hold-down mechanism is positioned at the side of described circular alignment pin, another the second hold-down mechanism is positioned at the side of described diamond positioning pin.

5. spindle finish-milling end face fixture for processing according to claim 4, is characterized in that: described first hold-down mechanism comprises the first support column be vertically located on described base plate, be set on the first support column and for compress described spindle the first pressing plate, be set on the first support column and the first cylindrically coiled spring be positioned at below the first pressing plate and be the locking nut being threaded and being positioned at above the first pressing plate with the first support column.

6. spindle finish-milling end face fixture for processing according to claim 5, is characterized in that: described first pressing plate is strip.

7. spindle finish-milling end face fixture for processing according to claim 6, is characterized in that: described first hold-down mechanism also comprise vertically be located on described base plate and to the height of described first pressing plate regulate first adjustable support nail.

8. spindle finish-milling end face fixture for processing according to claim 7, is characterized in that: described first hold-down mechanism is relative with described second hold-down mechanism being positioned at described circular alignment pin side, and is positioned at the both sides of described backing plate.

9. spindle finish-milling end face fixture for processing according to claim 4, it is characterized in that: described second hold-down mechanism comprises the second support column be vertically located on described base plate, be set on the second support column and for compress described spindle the second pressing plate, be set on the second support column and the second cylindrically coiled spring be positioned at below the second pressing plate and be the locking nut being threaded and being positioned at above the second pressing plate with the second support column, the second pressing plate is gooseneck type pressing plate.

10. spindle finish-milling end face fixture for processing according to claim 9, is characterized in that: described second hold-down mechanism also comprise vertically be located on described base plate and to the height of described second pressing plate regulate second adjustable support nail.