Drilling clamp for flange yoke of transmission shaft

Abstract

The transmission shaft flange yoke drilling clamp comprises a base, a pressing plate and a lifting mechanism, the base is in an inverted U shape and comprises a horizontal part and vertical parts located at the two ends of the horizontal part, the lifting mechanism is arranged at the lower end of the horizontal part, and a V-shaped block used for supporting a flange yoke convex lug and a supporting assembly used for supporting a flange yoke flange plate are arranged at the upper end of the horizontal part; two pull rods penetrating through the horizontal part in a sliding mode are vertically arranged at the lower end of the pressing plate, a connecting plate is arranged between the two pull rods, the lifting mechanism is used for driving the connecting plate to move up and down, a drill plate is arranged at the lower end of the pressing plate, a drill sleeve used for drilling holes is arranged on the drill plate, and a through hole coaxial with the drill sleeve is formed in the pressing plate. The clamping speed is high, the clamping effect is good, manual clamping is not needed, and the labor intensity of workers is small.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology in machining, and in particular to a drilling fixture for a transmission shaft flange fork. Background Technology

[0002] One of the components of an automotive driveshaft assembly is the flange fork (also known as a flange yoke). During machining, the flange fork requires drilling holes in the flange, and positioning and clamping of the flange fork must be completed before drilling. Existing patent CN 113953561 A discloses a positioning and clamping device including a base, a drilling template, a positioning block assembly, and a locking mechanism. The base includes a pedestal and a pair of supports erected on the pedestal, with the supports facing each other and spaced apart. When using this device, a manual handle is required to move the locking components and push the V-block upwards, thereby clamping the workpiece between the V-block and the drilling template. This device uses manual clamping, which is labor-intensive, time-consuming, and poses safety hazards. Furthermore, when clamping the workpiece, the outer peripheral wall of the eccentric wheel, which is farther from the center, abuts against the bottom of the V-block. However, the radial force generated during drilling can cause vibration, easily causing the eccentric wheel to rotate around its axis, leading to self-locking failure, affecting drilling quality, and even resulting in scrap. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model provides a drive shaft flange fork drilling fixture.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a drilling fixture for a transmission shaft flange fork, including a base, a pressure plate and a lifting mechanism. The base is inverted U-shaped and includes a horizontal part and vertical parts located at both ends of the horizontal part. The lifting mechanism is set at the lower end of the horizontal part. The upper end of the horizontal part is provided with a V-shaped block for supporting the flange fork lug and a support component for supporting the flange fork flange.

[0005] The lower end of the pressure plate is vertically provided with two sliding tie rods that pass through the horizontal part. A connecting plate is provided between the two tie rods. A lifting mechanism is used to drive the connecting plate to move up and down. The lower end of the pressure plate is provided with a drill template. The drill template is provided with a drill sleeve for drilling. The pressure plate is provided with a through hole coaxial with the drill sleeve.

[0006] Furthermore, the lifting mechanism includes a cylinder, with the piston rod of the cylinder positioned vertically downwards and its end connected to the connecting plate.

[0007] Furthermore, the upper end of the pull rod is provided with a first screw and the lower end is provided with a second screw. The first screw passes through the pressure plate and is locked with a first locking nut, and the second screw passes through the connecting plate and is locked with a second locking nut. A guide sleeve that slides with the pull rod is provided on the horizontal part.

[0008] Furthermore, the support assembly includes side plates symmetrically arranged on both sides of the V-shaped block, and support members are respectively provided on the opposite sides of the two side plates. The support members include a support plate and two brackets arranged opposite to each other on the support plate. A vertically movable support plate is slidably arranged between the two brackets, and a spring is provided between the support plate and the support plate.

[0009] Furthermore, the upper end of the side plate is provided with a guide shaft, and the upper end of the pressure plate is provided with a guide hole that mates with the guide shaft.

[0010] Furthermore, push rods connecting the two support plates are provided at the rear ends of the two support plates.

[0011] Furthermore, connecting parts are provided on the opposite sides of the two vertical sections.

[0012] The beneficial effects of this application are as follows: 1. This application uses a lifting mechanism to drive the connecting plate to move downward, thereby driving the pressure plate to move downward, thereby clamping the flange fork between the drilling template and the V-block. The clamping speed is fast and the clamping effect is good. There is no need for manual clamping, reducing the labor intensity of workers and effectively avoiding the safety hazards of manual clamping. The support component plays a supporting role and ensures the stability of the drilling.

[0013] 2. This application uses tie rods, guide sleeves, guide shafts, and guide holes to provide guidance, ensuring the straightness of the pressure plate's vertical movement and the accuracy of clamping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Front view;

[0016] Figure 3 for Figure 2 Side sectional view;

[0017] Figure 4 This is a schematic diagram of the structure of the pallet in this application.

[0018] The markings in the diagram are: 1. Base, 11. Horizontal part, 12. Vertical part, 13. Connecting part, 2. Cylinder, 21. Connecting plate, 3. Pressure plate, 4. Drill template, 41. Drill sleeve, 5. Tie rod, 51. Guide sleeve, 52. First locking nut, 53. Second locking nut, 6. V-block, 61. Locating pin, 62. Cylindrical pin, 7. Side plate, 71. Support plate, 72. Push rod, 73. Guide shaft, 8. Flange fork, 81. Flange fork flange, 82. Flange fork lug, 9. Support plate, 91. Spring, 92. Guide plate, 93. Guide column. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Please see Figure 1-4 This utility model provides a drilling fixture for a drive shaft flange fork, including a base 1, a pressure plate 3, and a lifting mechanism. The base 1 is inverted U-shaped and includes a horizontal part 11 and vertical parts 12 located at both ends of the horizontal part 11. The horizontal part 11 and the vertical part 12 are integrally formed. The lifting mechanism is located at the lower end of the horizontal part 11. The upper end of the horizontal part 11 is provided with a V-shaped block 6 for supporting the flange fork lug 82 and a support assembly for supporting the flange fork flange 81. The lower end of the pressure plate 3 is provided with two vertically sliding tie rods 5 that slide through the horizontal part 11. A connecting plate 21 is provided between the two tie rods 5. The lifting mechanism is used to drive the connecting plate 21 to move up and down. The lower end of the pressure plate 3 is provided with a drilling template 4. The drilling template 4 is provided with a drill sleeve 41 for drilling. The pressure plate 3 is provided with a through hole coaxially arranged with the drill sleeve 41.

[0021] The V-block 6 has a V-groove at its upper end. When clamped, the flange fork lug 82 abuts against the two sides of the V-groove. The lifting mechanism includes a cylinder 2, whose piston rod is vertically downward and its end is connected to the connecting plate 21. The piston rod of the cylinder 2 is fixedly connected to the connecting plate 21 by bolts. It should be noted that any parts not described in detail in this application are prior art.

[0022] Specifically, the upper end of the pull rod 5 is provided with a first screw and the lower end is provided with a second screw. The first screw passes through the pressure plate 3 and is locked with a first locking nut 52. The first locking nut 52 is located at the upper end of the pressure plate 3. The second screw passes through the connecting plate 21 and is locked with a second locking nut 53. There are two second locking nuts 53. The connecting plate 21 is located between the two second locking nuts 53. The horizontal part 11 is provided with a guide sleeve 51 that slides with the pull rod 5. The pull rod 5 passes through the guide sleeve 51 and can move up and down in the vertical direction.

[0023] More specifically, the support assembly includes side plates 7 symmetrically arranged on both sides of the V-shaped block 6. Support members are respectively provided on the opposite sides of the two side plates 7. Each support member includes a support plate 71 and two brackets oppositely arranged on the support plate 71. The brackets are fixed to the support plate 71 by screws. An L-shaped stepped support portion is provided on the side plate 7, and the support plate 71 is located at the upper end of the stepped support portion. A vertically movable support plate 9 is slidably arranged between the two brackets, and a spring 91 is provided between the support plate 9 and the support plate 71. The bracket is L-shaped and includes a horizontal mounting section and a vertical guide section. The horizontal mounting section is fixedly connected to the support plate 71 by bolts. The two ends of the support plate 9 are vertically provided with guide plates 92, which are inverted U-shaped with the support plate 9. The vertical guide section is provided with a groove along the vertical direction. The guide plates 92 can slide up and down in the groove. The sides of the guide plates 92 are also provided with guide posts 93. The two guide posts 93 are located on opposite sides of the two guide plates 92. The sides of the vertical guide section are provided with waist-shaped guide holes that cooperate with the guide posts 93. The guide posts 93 can move up and down along the waist-shaped guide holes. The waist-shaped guide holes are connected to the groove. There are two springs 91. Spring pins are provided between the support plate 9 and the support plate 71. The two ends of the springs 91 are sleeved on the outside of the spring pins, and the upper and lower ends of the springs 91 are fixedly connected to the support plate 9 and the support plate 71, respectively.

[0024] Furthermore, the upper end of the side plate 7 is provided with a guide shaft 73, and the upper end of the pressure plate 3 is provided with a guide hole that mates with the guide shaft 73. The rear ends of the two support plates 71 are provided with push rods 72 connecting the two support plates 71. The push rods 72 are U-shaped, and their side projections are Z-shaped. The rear ends of the two support plates 71 are connected by a fixing plate. The push rods 72 are located at the rear end of the fixing plate. Connecting parts 13 are provided on opposite sides of the two vertical parts 12. The connecting parts 13 are L-shaped with the vertical parts 12 and are integrally formed with them. The connecting parts 13 are provided with mounting holes for installation. In use, the connecting parts 13 are mounted on a drilling machine using fixing bolts.

[0025] This application uses cylinder 2 to drive connecting plate 21 to move downward, thereby driving pressure plate 3 to move downward, thus clamping flange fork 8 between drill template 4 and V-block 6. The clamping speed is fast and the clamping effect is good, effectively avoiding the failure of cam structure self-locking due to drilling vibration. Moreover, no manual clamping is required, reducing the labor intensity of workers. The support component plays a supporting role, ensuring the stability of drilling.

[0026] Of course, this utility model is not limited to the embodiments described above. Several other embodiments based on the design concept of this utility model are also provided below.

[0027] For example, in other embodiments, unlike the embodiments described above, such as... Figure 2As shown, a positioning pin 61 is provided on the horizontal part 11, and a receiving hole for accommodating the positioning pin 61 is provided on the V-block 6. The diameter of the receiving hole is larger than the outer diameter of the positioning pin 61. A cylindrical pin 62 is provided on the V-block 6 radially through the positioning pin 61. The cylindrical pin 62 penetrates the positioning pin 61. A positioning through hole that is interference-fitted with the positioning pin 61 is provided on the V-block 6.

[0028] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A drilling fixture for a drive shaft flange fork, characterized in that, It includes a base (1), a pressure plate (3) and a lifting mechanism. The base (1) is inverted U-shaped and includes a horizontal part (11) and vertical parts (12) located at both ends of the horizontal part (11). The lifting mechanism is located at the lower end of the horizontal part (11). The upper end of the horizontal part (11) is provided with a V-shaped block (6) for supporting the flange fork lug (82) and a support assembly for supporting the flange fork flange (81). The lower end of the pressure plate (3) is provided with two sliding rods (5) that pass through the horizontal part (11). A connecting plate (21) is provided between the two rods (5). The lifting mechanism is used to drive the connecting plate (21) to move up and down. The lower end of the pressure plate (3) is provided with a drill template (4). The drill template (4) is provided with a drill sleeve (41) for drilling. The pressure plate (3) is provided with a through hole coaxial with the drill sleeve (41).

2. The drive shaft flange fork drilling fixture according to claim 1, characterized in that: The lifting mechanism includes a cylinder (2), the piston rod of the cylinder (2) is set vertically downward and its end is connected to the connecting plate (21).

3. The drive shaft flange fork drilling fixture according to claim 1, characterized in that: The upper end of the pull rod (5) is provided with a first screw and the lower end is provided with a second screw. The first screw passes through the pressure plate (3) and is locked with a first locking nut (52). The second screw passes through the connecting plate (21) and is locked with a second locking nut (53). The horizontal part (11) is provided with a guide sleeve (51) that slides with the pull rod (5).

4. The drive shaft flange fork drilling fixture according to claim 1, characterized in that: The support assembly includes side plates (7) symmetrically arranged on both sides of the V-shaped block (6). Support members are provided on the opposite sides of the two side plates (7). The support members include a support plate (71) and two brackets arranged opposite to each other on the support plate (71). A slide plate (9) that can move up and down is provided between the two brackets. A spring (91) is provided between the slide plate (9) and the support plate (71).

5. A drilling fixture for a transmission shaft flange as described in claim 4, characterized in that: The upper end of the side plate (7) is provided with a guide shaft (73), and the upper end of the pressure plate (3) is provided with a guide hole that cooperates with the guide shaft (73).

6. A drilling fixture for a transmission shaft flange as described in claim 4, characterized in that: The rear ends of the two support plates (71) are provided with push rods (72) that connect the two support plates (71).

7. A drilling fixture for a transmission shaft flange as described in claim 1, characterized in that: The two vertical parts (12) are respectively provided with connecting parts (13) on opposite sides.

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