Drilling clamp for machining eccentric bearing bush

Abstract

According to the drilling clamp for machining the eccentric bearing bush, efficient and accurate drilling machining treatment on the eccentric bearing bush is achieved through accurate positioning and stable clamping, and the machining quality of the eccentric bearing bush is guaranteed. The drilling jig comprises a jig body, a positioning plate, a drilling jig plate, a pressing plate, a pressing suite, a positioning suite, a fixing lining and a drilling sleeve. A positioning plate is installed on the die body, a drill plate is installed above the positioning plate, an open hole is formed in the drill plate, a fixing bush is arranged in the open hole, a drill bushing is placed in the fixing bush, a pressing plate is arranged on one side of the drill plate, the pressing plate is connected with the die body through a pressing suite, and a positioning suite is installed on one side of the die body. The positioning plate, the drill plate, the positioning kit and the pressing plate are combined to form a containing area, the containing area is used for containing the eccentric bearing bush, and the drill plate is matched with vertical drilling equipment to conduct drilling treatment on the eccentric bearing bush through a drill bushing.

Description

Technical Field

[0001] The present application relates to the field of machine tool processing technology, and in particular to a drilling fixture for processing eccentric bearing bushes. Background Art

[0002] In the field of mechanical processing, the eccentric bearing is a component with a special structure. Its processing accuracy and quality directly affect the performance and service life of the equipment and machine tools. When processing the eccentric bearing, especially the drilling operation on the eccentric bearing, due to the existence of the eccentric structure, the design and use of the fixture is very important. The fixture not only needs to be able to firmly clamp the eccentric bearing to ensure that it does not move or shake during the processing, but also needs to be able to accurately locate the drilling position to ensure the drilling precision and position accuracy.

[0003] However, most existing fixtures have problems such as inaccurate positioning and unstable clamping, which makes it impossible to accurately position and stably clamp the eccentric bearing, resulting in deviations and errors during the processing, thereby affecting the processing accuracy and part quality. Summary of the Invention

[0004] The present application provides a drilling fixture for machining eccentric bearings, which is used to solve the above-mentioned technical problems.

[0005] The present application provides a drilling fixture for machining an eccentric bearing, characterized in that it comprises: a die body, a positioning plate, a drilling template, a pressing plate, a clamping kit, a positioning kit, a fixing bushing and a drilling sleeve;

[0006] A positioning plate is installed on the mold body, the drilling template is installed above the positioning plate, an opening is provided on the drilling template, the fixed bushing is provided in the opening, the drill sleeve is placed in the fixed bushing, a pressure plate is provided on one side of the drilling template, the pressure plate is connected to the mold body through the clamping kit, the positioning kit is installed on one side of the mold body, the positioning plate, the drilling template, the positioning kit and the pressure plate are combined to form a placement area, the placement area is used to place eccentric bearing shells, and the drilling template cooperates with the vertical drilling equipment to drill the eccentric bearing shells through the drill sleeve.

[0007] Optionally, a first through hole, a second through hole and a connecting screw hole are provided on the mold body, the first through hole, the connecting screw hole and the second through hole are arranged at equal intervals, and the connecting screw hole is arranged between the first through hole and the second through hole.

[0008] Optionally, a third through hole, a fourth through hole and a countersunk hole are provided on the positioning plate at positions corresponding to the first through hole, the second through hole and the connecting screw hole. The positioning plate is fixed to the mold body by connecting bolts, and the connecting bolts are installed in the connecting screw holes and the countersunk holes.

[0009] Optionally, the drilling template is provided with a first straight pin hole, a threaded connection hole, a second straight pin hole and a stop screw hole, the threaded connection hole is arranged between the first straight pin hole and the second straight pin hole, and the stop screw hole is arranged between the threaded connection hole and the opening, and the drilling template is installed on the mold body through straight pins and bolts, the straight pins are installed in the first straight pin hole and the second straight pin hole, the bolts are installed in the threaded connection hole, and the stop screw is installed in the stop screw hole.

[0010] Optionally, an arcuate groove is provided on one side of the drill sleeve, and the arcuate groove contacts the outer surface edge of the stop screw to prevent the drill sleeve from rotating.

[0011] Optionally, a through opening is provided on the pressure plate, and the clamping kit includes a spherical washer, a spring member, a double-headed screw member and a connecting nut. An inclined opening is provided on the mold body, one end of the double-headed screw member is connected to the inclined opening, and the other end of the double-headed screw member is connected to the connecting nut through the through opening. The spherical washer is arranged between the connecting nut and the pressure plate, and the spring member is installed in the double-headed screw member, one end of which is in contact with the inclined opening, and the other end of the spring member is in contact with the pressure plate.

[0012] Optionally, a V-shaped groove is provided on the mold body, and one end of the pressing plate contacts the V-shaped groove.

[0013] Optionally, the positioning kit includes a positioning baffle, a positioning screw and a positioning nut. The positioning baffle is installed on one side of the mold body. A positioning screw hole is provided on the positioning baffle. The positioning screw is installed in the positioning screw hole. One side of the positioning screw extends toward the placement area, and the positioning nut is installed on the positioning screw.

[0014] Optionally, the positioning baffle is provided with a first through hole and a second through hole, and a first threaded hole and a second threaded hole are provided on one side of the mold body corresponding to the positions of the first through hole and the second through hole. The positioning baffle is connected to the mold body through a clamping bolt, and the clamping bolt is installed in the first through hole, the second through hole, the first threaded hole and the second threaded hole.

[0015] Optionally, the drill sleeve and the fixed bushing are connected in a detachable manner.

[0016] It can be seen from the above technical solutions that this application has the following advantages:

[0017] 1. This drilling fixture forms a precise placement area through the combination of positioning plate, drilling template and positioning kit, which can ensure the accurate positioning of the eccentric bearing during the processing. The opening on the drilling template cooperates with the fixed bushing and drill sleeve to further ensure the accuracy of the drilling position and improve the processing accuracy.

[0018] 2. The pressure plate is connected to the mold body through the clamping kit, which applies a stable clamping force to the eccentric bearing to prevent it from moving or shaking during the processing. This clamping method not only ensures the stability of the processing, but also improves the quality of the drilling.

[0019] 3. The structure of the drilling jig is simple. The operator can quickly complete the clamping and positioning of the eccentric bearing without complicated adjustments and calibrations. This simple operation method not only improves processing efficiency, but also reduces the labor intensity of the operator.

[0020] 4. Through accurate positioning and stable clamping, the drilling process is ensured to proceed smoothly, which helps to improve the processing accuracy, make the processing more efficient, and achieve efficient and accurate processing of eccentric bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a three-dimensional structure in which an eccentric bearing bush is placed on a drilling fixture for machining an eccentric bearing bush in the present application;

[0022] Figure 2 This is another schematic diagram of a three-dimensional structure in which an eccentric bearing bush is placed on a drilling fixture for machining an eccentric bearing bush in the present application;

[0023] Figure 3 This is another schematic diagram of a three-dimensional structure in which an eccentric bearing bush is placed on a drilling fixture for machining an eccentric bearing bush in the present application;

[0024] Figure 4 This is a structural diagram of an eccentric bearing placed on a drilling fixture for machining an eccentric bearing in this application;

[0025] Figure 5 yes Figure 4 Schematic cross-section of the AA section.

[0026] In the figure: 1. mold body; 2. positioning plate; 3. drilling template; 4. pressure plate; 5. positioning baffle; 6. fixing bushing; 7. drill sleeve; 8. stop screw; 9. positioning screw; 10. positioning nut; 11. V-groove; 12. connecting nut; 13. spherical washer; 14. spring; 15. connecting bolt; 16. double-headed connecting screw; 17. tightening bolt. DETAILED DESCRIPTION

[0027] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only used to illustrate the relative position relationship between the various components or components, and do not particularly limit the specific installation orientation of the various components or components.

[0028] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0029] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0030] In addition, the structures, proportions, sizes, etc. drawn in the drawings in this application are only used to match the contents disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0031] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in this application. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] During the processing of eccentric bearings, most of the existing fixtures have problems such as inaccurate positioning and unstable clamping, which makes it impossible to accurately position and stably clamp the eccentric bearings, resulting in deviations and errors during the processing, thus affecting the processing accuracy and part quality.

[0033] It should be noted that the eccentric bearing bushings made by the drilling fixture for processing eccentric bearing bushings in the present application are preferably used on centerless grinders, and can also be used on other grinders, without specific limitation here.

[0034] Based on this, the present application provides a drilling fixture for processing eccentric bearings. Through the combination of accurate positioning and stable clamping, it ensures the smooth progress of the drilling process, improves the processing accuracy, makes the processing process more efficient, and realizes efficient and precise processing of eccentric bearings, ensuring the processing accuracy and part quality of the eccentric bearings.

[0035] See also Figures 1 to 5 The present application provides a drilling fixture for processing eccentric bearings, comprising: a mold body 1, a positioning plate 2, a drilling template 3, a pressure plate 4, a clamping kit, a positioning kit, a fixed bushing 6 and a drill sleeve 7; the mold body 1 is provided with a positioning plate 2, the drilling template 3 is installed above the positioning plate 2, the drilling template 3 is provided with an opening, the fixed bushing 6 is arranged in the opening, the drill sleeve 7 is placed in the fixed bushing 6, a pressure plate 4 is provided on one side of the drilling template 3, the pressure plate 4 is connected to the mold body 1 through the clamping kit, the mold body 1 is provided with the positioning kit, the positioning plate 2, the drilling template 3, the positioning kit and the pressure plate 4 are combined to form a placement area, the placement area is used to place the eccentric bearing, the drilling template 3 cooperates with the vertical drilling equipment to drill the eccentric bearing through the drill sleeve 7.

[0036] First, explain the functions and roles of each component:

[0037] Piece 1: Piece 1 is the main structure of the entire drilling fixture, used to support and fix other components to ensure the stability and accuracy of the drilling fixture during the processing.

[0038] Positioning plate 2: Positioning plate 2 is used to determine the position of the eccentric bearing in the fixture to ensure its accurate positioning during the processing. The positioning plate 2 cooperates with the drilling template 3 and the pressure plate 4 and other components to form a placement area for clamping and fixing the eccentric bearing. The positioning plate 2 is fixed to the mold body 1 by connecting bolts 15 to ensure its stability during the processing. It should be noted that the outer arc surface of the positioning plate is tightly fitted with the inner arc of the eccentric bearing, so as to ensure the stability of the eccentric bearing on the positioning plate during the processing and prevent the eccentric bearing from offset.

[0039] Drill template 3: Drill template 3 is used to install drill sleeve 7 and ensure that the drill sleeve 7 is correctly positioned on the drill template. Drill template 3 cooperates with vertical drilling equipment to achieve precise drilling of eccentric bearings. Drill template 3 is provided with openings for installing fixed bushing 6 and drill sleeve 7, ensuring that the drill sleeve 7 is aligned with the drill bit of the vertical drilling equipment. The drill bit of the vertical drilling equipment achieves precise drilling of the eccentric bearing. It should be noted that the drill sleeve is high in hardness and has strong wear resistance.

[0040] Pressure plate 4: Pressure plate 4 is used to apply pressure to the eccentric bearing to fix it in the placement area. Pressure plate 4 cooperates with the clamping kit to achieve stable clamping of the eccentric bearing. By adjusting the clamping kit, the clamping force of pressure plate 4 on the eccentric bearing can be adjusted.

[0041] Clamping kit: The clamping kit is used to connect the pressing plate 4 and the mold body 1 to clamp the eccentric bearing. The clamping force can be adjusted as needed to ensure the stability of the eccentric bearing during the processing.

[0042] Positioning kit: The positioning kit is used to assist the positioning plate 2 in determining the position of the eccentric bearing in the fixture. The positioning kit cooperates with the positioning plate 2, the drilling template 3 and the pressing plate 4 to form a precise placement area.

[0043] Fixed bushing 6: The fixed bushing 6 is used to support and fix the drill sleeve 7 to prevent it from moving or wearing during the processing. The fixed bushing 6 cooperates with the opening of the drilling template 3 to ensure the correct position of the drill sleeve 7. The connection between the drill sleeve 7 and the fixed bushing 6 is a detachable connection.

[0044] Drill sleeve 7: Drill sleeve 7 is used to guide the drill bit of the vertical drilling equipment. The drill sleeve 7 cooperates with the fixed bushing 6 to ensure the correct position and movement trajectory of the drill bit, thereby achieving accurate drilling of the eccentric bearing.

[0045] Before drilling the eccentric bearing, first place the eccentric bearing in the placement area formed by the positioning plate 2, the drilling template 3, the positioning kit and the pressure plate 4. Then, by adjusting the clamping kit, the pressure plate 4 applies appropriate clamping force to the eccentric bearing to ensure its stability during the processing. After the fixation is completed, start the vertical drilling equipment and make the drill bit drill the eccentric bearing through the drill sleeve 7. The drilling template 3 and the fixed bushing 6 can ensure the correct position and movement trajectory of the drill bit on the vertical drilling equipment, thereby achieving accurate drilling of the eccentric bearing.

[0046] Optionally, a first through hole, a second through hole and a connecting screw hole are provided on the mold body 1, and the first through hole, the connecting screw hole and the second through hole are arranged at equal intervals, and the connecting screw hole is arranged between the first through hole and the second through hole. A third through hole, a fourth through hole and a countersunk hole are provided on the positioning plate 2 at positions corresponding to the first through hole, the second through hole and the connecting screw hole. The positioning plate 2 is fixed to the mold body 1 by a connecting bolt 15, and the connecting bolt 15 is installed in the connecting hole and the countersunk hole.

[0047] In an embodiment of the present application, a first through hole, a second through hole and a connecting screw hole are provided on the mold body 1, and the first through hole, the second through hole and the connecting screw hole are arranged at equal intervals on the mold body 1, and the connecting hole is provided between the first through hole and the second through hole. Correspondingly, a third through hole, a fourth through hole and a countersunk hole are provided on the positioning plate 2, and the positions of the first through hole, the second through hole and the connecting screw hole on the mold body 1 are respectively provided with a third through hole, a fourth through hole and a countersunk hole.

[0048] The third and fourth through holes correspond to the first and second through holes on the mold body 1 and are used to facilitate the installation or positioning of the eccentric bearing. The countersunk holes on the positioning plate 2 are used to mate with the connecting screw holes on the mold body 1. The positioning plate 2 is fixed to the mold body 1 via connecting bolts 15. The connecting bolts 15 are installed in the connecting screw holes of the mold body 1 and the countersunk holes of the positioning plate 2. By tightening the connecting bolts 15, the positioning plate 2 can be securely fixed to the mold body 1. The provision of the countersunk holes allows the heads of the connecting bolts 15 to sink into the positioning plate 2, preventing the bolt heads from protruding and interfering with the installation or processing of the eccentric bearing.

[0049] By using the connecting screw holes on the mold body 1 and the countersunk holes on the positioning plate 2, as well as the connecting bolts 15, a firm connection between the positioning plate 2 and the mold body 1 can be achieved. The connection by means of connecting bolts is not only simple and reliable, but also easy to disassemble and install, making it convenient to maintain and adjust the fixture.

[0050] Optionally, the drilling template 3 is provided with a first straight pin hole, a threaded connection hole, a second straight pin hole and a stop screw hole, the threaded connection hole is arranged between the first straight pin hole and the second straight pin hole, and the stop screw hole is arranged between the threaded connection hole and the opening, the drilling template 3 is installed on the mold body 1 through straight pins and bolts, the straight pins are installed in the first straight pin hole and the second straight pin hole, the bolts are installed in the threaded connection hole, and the stop screw 8 is installed in the stop screw hole, and an arc-shaped groove is provided on one side of the drill sleeve 7, and the arc-shaped groove contacts the outer surface edge of the stop screw 8 to prevent the drill sleeve 7 from rotating.

[0051] In an embodiment of the present application, a first straight pin hole is arranged on one side of the drilling template 3, a second straight pin hole is arranged on the other side of the drilling template 3, and a threaded connection hole is arranged between the first straight pin hole and the second straight pin hole. The drilling template 3 is tightly connected to the corresponding threaded holes on the mold body 1 by bolts, thereby fixing the drilling template 3 on the mold body 1 to ensure that it will not loosen due to vibration or external force during the processing process. Corresponding straight pins are inserted into the first straight pin hole and the second straight pin hole on the drilling template 3, and the position of the drilling template 3 is fixed by the straight pins.

[0052] Among them, the stop screw hole is arranged between the threaded connection hole and the opening. The stop screw hole is used to install the stop screw 8. The stop screw 8 is used to tighten the arc groove on the drill sleeve 7. The arc groove and the stop screw 8 cooperate to prevent the drill sleeve 7 from rotating or moving during the processing, thereby ensuring accurate guidance and positioning of the drill bit.

[0053] In practical application, first align the first and second straight pin holes on the drill template 3 with the corresponding straight pin holes on the die body 1. Next, insert the straight pins, and through their tightening action, achieve preliminary positioning and fixation of the drill template 3 on the die body 1. Next, threaded bolts are passed through the threaded connection holes on the drill template 3 and aligned with the threaded holes on the die body 1. The bolts are then tightened, further strengthening the fixing force of the drill template 3 on the die body 1 and ensuring its stability. Finally, after the drill sleeve 7 is placed, install the set screw 8 in its hole and adjust its position so that it presses against the drill sleeve 7, preventing it from rotating or moving during machining and ensuring accurate guidance and positioning of the drill bit.

[0054] Optionally, a through opening is provided on the pressure plate 4, and the clamping kit includes a spherical washer 13, a spring member 14, a double-headed screw member 16 and a connecting nut 12. An inclined opening is provided on the mold body 1, one end of the double-headed screw member 16 is connected to the inclined opening, and the other end of the double-headed screw member 16 is connected to the connecting nut 12 through the through opening. The spherical washer 13 is arranged between the connecting nut 12 and the pressure plate 4, and the spring member 14 is installed in the double-headed screw member 16, one end of which contacts the inclined opening, and the other end of the spring member 14 contacts the pressure plate 4. A V-shaped groove 11 is provided on the mold body 1, and one end of the pressure plate 4 contacts the V-shaped groove 11.

[0055] In the embodiment of the present application, a through opening is provided on the pressing plate 4, and its position corresponds to the position of the stud screw member 16, which is used to allow the stud screw member 16 to pass through the pressing plate 4 and connect with the connecting nut 12. One end of the stud connecting screw is connected to the inclined opening on the mold body 1, and the other end is connected to the connecting nut 12 through the through opening. A spherical washer 13 is provided between the connecting nut 12 and the pressing plate 4, and a spring member 14 is installed in the stud screw member 16, with one end in contact with the inclined opening and the other end in contact with the pressing plate 4.

[0056] When the connecting nut 12 is rotated, the force of the connecting nut 12 acts on the spherical washer 13. Since the spherical washer 13 is in contact with the pressure plate 4, the pressure plate 4 will be driven to move downward under the action of pressure, and the pressure plate 4 will be in contact with the eccentric bearing. At this time, the spring part 14 is in a compressed state. After the processing is completed, the connecting nut 12 is loosened. At this time, the spring part 14 will rebound, thereby pushing the pressure plate 4 upward, so that the pressure plate 4 is loosened from the eccentric bearing, so that the processed eccentric bearing can be quickly removed.

[0057] It should be noted that the V-shaped groove 11 is provided on the mold body 1 and contacts one end of the pressing plate 4. The function of the V-shaped groove 11 is to provide additional support and positioning to ensure that the pressing plate 4 can remain stable during the clamping process.

[0058] Optionally, the positioning kit includes a positioning baffle 5, a positioning screw 9 and a positioning nut 10, the positioning baffle 5 is installed on one side of the mold body 1, a positioning hole is provided on the positioning baffle 5, the positioning screw 9 is installed in the positioning screw hole, one side of the positioning screw 9 extends toward the placement area, and the positioning nut 10 is installed on the positioning screw 9.

[0059] In the embodiment of the present application, the positioning kit is one of the key components in the drilling fixture used to ensure the accurate positioning of the eccentric bearing. The positioning kit includes a positioning baffle 5, a positioning screw 9, a positioning nut 10 and a tightening bolt 17. The four parts work together to achieve precise positioning of the eccentric bearing.

[0060] Among them, the positioning baffle 5 is installed on one side of the mold body 1, and the positioning baffle 5 is connected to the mold body 1. Specifically, a first through hole and a second through hole are provided on the positioning baffle 5, and a first threaded hole and a second threaded hole are provided on one side of the mold body 1 at positions corresponding to the first through hole and the second through hole. The positioning baffle 5 is connected to the mold body 1 through a clamping bolt 17, and the clamping bolt 17 is installed in the first through hole, the second through hole, the first threaded hole and the second threaded hole, thereby realizing the connection between the positioning baffle 5 and the mold body 1.

[0061] Among them, the positioning screw 9 is installed in the positioning hole of the positioning baffle 5, and a positioning nut 10 is installed on the positioning screw 9. The positioning nut 10 is used to fix and lock the positioning screw 9. One side of the positioning screw 9 extends toward the placement area. The positioning screw 9 is a key component for positioning the eccentric bearing. The positioning pin 9 is used to ensure the accurate position of the eccentric bearing in the drilling fixture.

[0062] By tightening the positioning nut 10, the positioning screw 9 can be firmly fixed on the positioning baffle 5 to prevent it from loosening or shifting during the processing. At the same time, the positioning nut 10 can also adjust the extension length of the positioning screw 9 to adapt to eccentric bearings of different sizes or shapes.

[0063] During the machining process, the eccentric bearing is first placed in the placement area formed by the positioning plate 2, drilling template 3, pressure plate 4 and other components. Then, after fixing the extension length of the positioning screw 9, the eccentric bearing is brought into contact with the positioning screw 9 to complete the positioning of the eccentric bearing. After that, the eccentric bearing is clamped and fixed by the pressure plate 4 and the clamping kit. Finally, the vertical drilling equipment is started to drill the eccentric bearing through the drill sleeve 7.

[0064] It should be noted that the above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drilling fixture for machining eccentric bearings, characterized in that: include: Phantom, positioning plate, drilling template, pressing plate, clamping kit, positioning kit, fixing bushing and drilling sleeve; A positioning plate is installed on the mold body, the drilling template is installed above the positioning plate, an opening is provided on the drilling template, the fixed bushing is provided in the opening, the drill sleeve is placed in the fixed bushing, a pressure plate is provided on one side of the drilling template, the pressure plate is connected to the mold body through the clamping kit, the positioning kit is installed on one side of the mold body, the positioning plate, the drilling template, the positioning kit and the pressure plate are combined to form a placement area, the placement area is used to place eccentric bearing shells, and the drilling template cooperates with the vertical drilling equipment to drill the eccentric bearing shells through the drill sleeve.

2. The drilling fixture for machining an eccentric bearing according to claim 1, characterized in that: The mold body is provided with a first through hole, a second through hole and a connecting screw hole. The first through hole, the connecting screw hole and the second through hole are arranged at equal intervals, and the connecting screw hole is arranged between the first through hole and the second through hole.

3. The drilling fixture for machining an eccentric bearing according to claim 2, characterized in that: A third through hole, a fourth through hole and a countersunk hole are provided on the positioning plate at positions corresponding to the first through hole, the second through hole and the connecting screw hole. The positioning plate is fixed to the mold body by connecting bolts, and the connecting bolts are installed in the connecting screw holes and the countersunk holes.

4. The drilling fixture for machining an eccentric bearing according to claim 1, characterized in that: The drilling template is provided with a first straight pin hole, a threaded connection hole, a second straight pin hole and a stop screw hole. The threaded connection hole is arranged between the first straight pin hole and the second straight pin hole, and the stop screw hole is arranged between the threaded connection hole and the opening. The drilling template is installed on the mold body through straight pins and bolts. The straight pins are installed in the first straight pin hole and the second straight pin hole, the bolt is installed in the threaded connection hole, and the stop screw is installed in the stop screw hole.

5. The drilling fixture for machining an eccentric bearing according to claim 4, characterized in that: An arcuate slot is provided on one side of the drill sleeve, and the arcuate slot contacts the outer edge of the stop screw to prevent the drill sleeve from rotating.

6. The drilling fixture for machining an eccentric bearing according to claim 1, characterized in that: A through opening is provided on the pressure plate, and the clamping kit includes a spherical washer, a spring part, a double-headed screw part and a connecting nut. An inclined opening is provided on the mold body, one end of the double-headed screw part is connected to the inclined opening, and the other end of the double-headed screw part is connected to the connecting nut through the through opening. The spherical washer is arranged between the connecting nut and the pressure plate, and the spring part is installed in the double-headed screw part, one end of which is in contact with the inclined opening, and the other end of the spring part is in contact with the pressure plate.

7. The drilling fixture for machining an eccentric bearing according to claim 6, characterized in that: The mold body is provided with a V-shaped groove, and one end of the pressing plate is in contact with the V-shaped groove.

8. The drilling fixture for machining an eccentric bearing according to claim 1, characterized in that: The positioning kit includes a positioning baffle, a positioning screw and a positioning nut. The positioning baffle is installed on one side of the mold body. A positioning screw hole is provided on the positioning baffle. The positioning screw is installed in the positioning screw hole. One side of the positioning screw extends toward the placement area. The positioning nut is installed on the positioning screw.

9. The drilling fixture for machining an eccentric bearing according to claim 8, characterized in that: The positioning baffle is provided with a first through hole and a second through hole, and a first threaded hole and a second threaded hole are provided at positions corresponding to the first through hole and the second through hole on one side of the mold body. The positioning baffle is connected to the mold body through a clamping bolt, and the clamping bolt is installed in the first through hole, the second through hole, the first threaded hole and the second threaded hole.

10. The drilling fixture for machining an eccentric bearing according to any one of claims 1 to 9, characterized in that: The drill sleeve and the fixed bushing are connected in a detachable manner.

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