U-bar boring fixture

Abstract

The utility model discloses a kind of U-shaped rod boring hole clamps, including chassis, lower support plate, lower support plate is fixed with chassis, for the positioning assembly of cooperation with the second mounting hole on U-shaped rod, positioning assembly is fixed with lower support plate;First pressing part, first pressing part is connected with one end of lower support plate;Second pressing part, second pressing part is connected with the other end of lower support plate;The pressure plate that first pressing part and second pressing part exert pressure, pressure plate is respectively matched with first pressing part and second pressing part;Press block, press block is connected with pressure plate, and the combination groove for being matched with the connecting arm of U-shaped rod is equipped on press block.The utility model has the advantages of small size and low cost.

Description

Technical Field

[0001] This utility model relates to the field of machining technology after forging of parts, specifically to a U-shaped rod boring fixture. Background Technology

[0002] The U-shaped stick on an excavator usually refers to the stick, which is an important component of the excavator. The main function of the stick is to connect the boom and the bucket, assisting the excavator in digging and transporting materials. The stick is typically U-shaped to provide better mechanical support and stability.

[0003] like Figures 1 to 3 As shown, the U-shaped rod consists of a connecting arm 1 and an intermediate connecting block 2. There are two connecting arms 1, and the two ends of the intermediate connecting block 2 are respectively fixed to one of the connecting arms 1. Each connecting arm 1 is provided with a first through hole 3, and the intermediate connecting block 2 is provided with a second through hole 4.

[0004] The manufacturing process of the U-shaped rod is as follows: First, a semi-finished U-shaped rod is forged using forging equipment. Then, the first through hole 3 is machined on the connecting arm 1 of the U-shaped rod, and the second through hole 4 is machined on the intermediate connecting block 2. Since the precision of the first through hole 3 cannot meet the requirements, it needs to be precision machined by boring to make the first through hole 3 meet the design requirements of the drawing.

[0005] During the precision boring of a U-shaped bar, it is necessary to clamp the U-shaped bar. The existing operation method is to place the U-shaped bar on the worktable and use a hydraulic mechanism to apply force to the U-shaped bar from the left and right sides to clamp it. This clamping structure uses a hydraulic mechanism, which not only makes the fixture large in size but also expensive. Utility Model Content

[0006] This invention provides a U-shaped rod boring fixture that is small in size and low in cost.

[0007] The technical solutions to the above technical problems are as follows:

[0008] The U-shaped boring fixture includes a chassis and also includes:

[0009] The lower support plate is fixed to the chassis.

[0010] A positioning assembly for engaging with the second mounting hole on the U-shaped rod, the positioning assembly being fixed to the lower support plate;

[0011] The first clamping member is connected to one end of the lower support plate;

[0012] The second clamping member is connected to the other end of the lower support plate;

[0013] A pressure plate subjected to pressure by a first pressure member and a second pressure member, the pressure plate cooperating with the first pressure member and the second pressure member respectively;

[0014] The pressure block is connected to the pressure plate, and the pressure block is provided with a mating groove for engaging with the connecting arm of the U-shaped rod.

[0015] After the second through hole on the U-shaped rod is inserted into one end of the positioning post, the middle connecting block of the U-shaped rod is supported by the positioning seat. The mating groove of the pressure block is mated with the connecting arm. The first bolt is threaded through the first U-shaped groove on the pressure plate and then threaded into the third mounting hole. The first pressing component forms a pre-pressure on one end of the pressure plate. The second clamping component is rotated clockwise so that the bolt on the second clamping component is mated with the second U-shaped groove. Torque is applied to the nut so that the nut applies a clamping force to the other end of the pressure plate. Finally, torque is applied to the first pressing component so that a clamping force is generated on the other end of the pressure plate. In this way, the U-shaped rod is clamped between the positioning seat and the pressure block.

[0016] In practical use, this invention eliminates the need for adjustment once the first clamping member is installed on the same model of U-shaped rod. Therefore, during clamping, after the clamping block engages with the U-shaped rod, only the second clamping member needs to be operated to apply pressure to the pressure plate. After boring the first through hole, the nut in the second clamping member is loosened, and rotating the second clamping member removes the clamping force on the U-shaped rod. This provides a quick clamping solution. Furthermore, this invention eliminates the hydraulic clamping mechanism, reducing both cost and fixture size. Attached Figure Description

[0017] Figure 1 This is the front view of the U-shaped rod.

[0018] Figure 2 This is a top view of the U-shaped bar.

[0019] Figure 3 This is the right view of the U-shaped rod.

[0020] Figure 4 This is the front view of the U-shaped rod boring fixture.

[0021] Figure 5 This is a top view of the U-shaped rod boring fixture.

[0022] Figure 6 This is a top view of the lower support plate.

[0023] Figure 7 This is a cross-sectional view of the lower support plate.

[0024] Figure 8 This is a structural diagram of the first clamping component.

[0025] Figure 9This is the front view of the pressure plate.

[0026] Figure 10 This is a top view of the pressure plate.

[0027] Figure 11 This is a cross-sectional view of the briquette.

[0028] Figure 12 This is a structural diagram of the positioning column.

[0029] Connecting arm 1, intermediate connecting block 2, first through hole 3, second through hole 4, chassis 11, counterweight block 11a, lower support plate 12, first mounting hole 12a, lower support plate body 12b, second mounting hole 12c, first support arm 12d, second support arm 12e, third mounting hole 12f, first nut 12g, groove 12h, fourth mounting hole 12i, first clamping member 13, first bolt 13a, first pressure application member 13b, second clamping member 14, hinge joint 14a, bolt 14b, nut 14c, pressure plate 15, first U-shaped groove 15a, first groove 15b, second U-shaped groove 15c, assembly hole 15d, pressure block 16, connecting groove 16a, pressure block body 16b, first clamping arm 16c, second clamping arm 16d, assembly groove 16e, mating groove 16f, positioning post 17, boss 17a, positioning seat 18, fastener 19, support member 20. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, 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.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] like Figures 1 to 12 As shown, the U-shaped rod boring fixture of this utility model includes a base plate 11, a lower support plate 12, a first clamping member 13, a second clamping member 14, a pressure plate 15, and a pressure block 16. The following is a detailed description of each part and the relationship between them.

[0035] The chassis 11 is circular, and the lower support plate 12 is fixed to the chassis 11. The end of the lower support plate 12 facing the chassis 11 has multiple first mounting holes 12a. Screws are threaded through the chassis 11 and into the first mounting holes 12a to secure the lower support plate 12 to the chassis 11 as a single unit. Since the lower support plate 12 is installed at the lower part of the chassis 11, a counterweight 11a is fixed to the upper part of the chassis 11 to match the weight of the lower part of the chassis 11. Screws are preferably used to secure the counterweight 11a to the chassis 11 as a single unit.

[0036] The lower support plate 12 includes a lower support plate body 12b, a first support arm 12d, and a second support arm 12e. Each of the lower support plate body 12b, the first support arm 12d, and the second support arm 12e has a first mounting hole 12a. The lower support plate body 12b has a second mounting hole 12c, and the positioning component mates with the second mounting hole 12c. One end of the first support arm 12d is fixed to one end of the lower support plate body 12b, and the other end of the first support arm 12d has a third mounting hole 12f, which is a threaded hole. The other end of the first support arm 12d also has a first nut 12g, the center of which is on the same straight line as the center of the third mounting hole 12f. The first nut 12g can be fixed to the first support arm 12d by welding. The first clamping member 13 is threadedly connected to both the first nut 12g and the third mounting hole 12f.

[0037] One end of the second support arm 12e is fixed to the other end of the lower support plate body 12b. The other end of the second support arm 12e is provided with a groove 12h. After a part of the second clamping member 14 is engaged with the groove 12h, a connector is used to hinge the second support arm 12e to the second clamping member 14. For example, a fourth mounting hole 12i is provided on the second support arm 12e. A bolt passes through the second clamping member 14 and is threadedly connected to the fourth mounting hole 12i, thereby hinged the second clamping member 14 to the second support arm 12e.

[0038] The positioning assembly is used to mate with the second through hole 4 on the U-shaped rod. The positioning assembly is fixed to the lower support plate 12. The positioning assembly includes a positioning post 17 and a positioning seat 18. One end of the positioning post 17 is used to insert into the second through hole 4 on the U-shaped rod. A radial boss 17a is fixed to one end of the positioning post 17. The boss 17a mates with the lower support plate 12. The positioning seat 18 is sleeved on the positioning post 17 and fixed to the lower support plate 12. The boss 17a is pressed between the lower support plate 12 and the positioning seat 18. Screws are used to thread the positioning seat 18 through the threaded hole provided on the lower support plate body 12b to fasten the positioning seat 18 and the lower support plate body 12b into one unit. In this utility model, when the diameter of the second through hole 4 on different U-shaped rods is different, the screws that fasten the positioning seat 18 and the lower support plate body 12b can be removed and the positioning post 17 that is adapted to the current second through hole 4 can be replaced.

[0039] The first clamping member 13 is connected to one end of the lower support plate 12. The first clamping member 13 includes a first bolt 13a and a first pressure-applying component 13b that applies pressure to the pressure plate 15. One end of the first bolt 13a is threadedly connected to the lower support plate 12, and the other end of the first bolt 13a is fixed to the first pressure-applying component 13b. The first bolt 13a is threadedly connected to the first nut 12g and the third mounting hole 12f. The first pressure-applying component 13b is used to apply pressure to one end of the pressure plate 15. The first pressure-applying component 13b is rectangular. Therefore, the first clamping member 13 is a T-bolt.

[0040] The second clamping member 14 is connected to the other end of the lower support plate 12. The second clamping member 14 includes a hinge joint 14a, a bolt 14b, and a nut 14c that applies pressure to the pressure plate 15. The hinge joint 14a is hinged to the lower support plate 12. After the hinge joint 14a is clearance-fitted with the groove 12h, the bolt passes through the hinge joint 14a and is threadedly connected to the fourth mounting hole 12i, thereby making the hinge joint 14a hinged to the second support arm 12e. One end of the bolt 14b is fixed to the hinge joint 14a, and the other end of the bolt 14b is threadedly connected to the nut 14c. The nut 14c is used to apply pressure to the other end of the pressure plate 15.

[0041] The pressure plate 15 is pressurized by the first clamping member 13 and the second clamping member 14. The pressure plate 15 cooperates with the first clamping member 13 and the second clamping member 14 respectively. One end of the pressure plate 15 is provided with a first U-shaped groove 15a for the first clamping member 13 to pass through, and the upper end surface of the pressure plate 15 is provided with a first groove 15b that cooperates with the first clamping member 13. The other end of the pressure plate 15 is provided with a second U-shaped groove 15c for the second clamping member 14 to pass through. In this utility model, the first bolt 13a passes through the first U-shaped groove 15a and is threadedly connected to the first nut 12g and the third mounting hole 12f. The first pressure-applying member 13b cooperates with the first groove 15b. The bolt 14b passes through the second U-shaped groove 15 and is connected to the nut 14c.

[0042] The pressure block 16 is connected to the pressure plate 15. The pressure block 16 is provided with a V-shaped engagement groove 16a for engaging with the connecting arm 1 of the U-shaped rod. This utility model also includes a fastener 19 for fixing the pressure plate 15 and the pressure block 16. The pressure block 16 includes a pressure block body 16b, a first clamping arm 16c, and a second clamping arm 16d. The engagement groove 16a is provided at one end of the pressure block body 16b. The first clamping arm 16c and the second clamping arm 16d are respectively fixed to the other end of the pressure block body 16b. An assembly groove 16e is formed between the first clamping arm 16c and the second clamping arm 16d. The pressure plate 15 engages with the assembly groove 16e. The fastener 19 passes through the first clamping arm 16c, the pressure plate 15, and the second clamping arm 16d. The first clamping arm 16c is provided with a through hole, and the second clamping arm 16d is provided with a threaded hole. The fastener 19 consists of a bolt and a nut. After the bolt in the fastener 19 passes through the first clamping arm 16c and the pressure plate 15, the bolt is threadedly connected to the threaded hole on the second clamping arm 16d and the nut in the fastener 19.

[0043] Although the pressure block 16 and the pressure plate 15 are fastened together by fasteners 19, a gap still exists between them. When the pressure block 16 applies pressure to the U-shaped rod, this gap causes instability in the clamping of the U-shaped rod. Therefore, this invention also includes a support component 20. The pressure plate 15 has an assembly hole 15d, and the pressure block 16 has a mating groove 16f located at the bottom of the assembly groove 16e. One end of the support component 20 mates with the assembly hole 15d, and the other end mates with the assembly groove 16e. After the U-shaped rod is clamped, the pushing force generated by the support component 20 on the pressure block 16 eliminates the gap between the pressure block 16 and the U-shaped rod.

[0044] The usage process of this utility model is as follows:

[0045] After the second through hole 4 on the U-shaped rod is inserted into one end of the positioning post 17, the middle connecting block 2 of the U-shaped rod is supported by the positioning seat 18. The mating groove 16a of the pressure block 16 is mated with the connecting arm 1. The first bolt 13a is passed through the first U-shaped groove 15a on the pressure plate 15 and then threaded into the third mounting hole 12f. The first pressure applying component 13b forms a pre-pressure on one end of the pressure plate 15. Clockwise (from Figure 1 (Looking up) Rotate the second clamping member 14 so that the bolt 14b on the second clamping member 14 engages with the second U-shaped groove 15c, apply torque to the nut 14c, so that the nut 14c applies a clamping force to the other end of the pressure plate 15, and finally apply torque to the first pressure applying member 13b, so that the first pressure applying member 13b generates a clamping force to the other end of the pressure plate 15, thus clamping the U-shaped rod between the positioning seat 18 and the pressure block 16.

Claims

1. A U-shaped rod boring fixture, comprising a base (11), characterized in that, Also includes: The lower support plate (12) is fixed to the chassis (11). A positioning assembly for engaging with the second through hole (4) on the U-shaped rod, the positioning assembly being fixed to the lower support plate (12); The first clamping member (13) is connected to one end of the lower support plate (12); The second clamping member (14) is connected to the other end of the lower support plate (12); The pressure plate (15) is subjected to pressure by the first pressure member (13) and the second pressure member (14), and the pressure plate (15) cooperates with the first pressure member (13) and the second pressure member (14) respectively; Pressure block (16) is connected to pressure plate (15). Pressure block (16) is provided with a mating groove (16a) for mating with the connecting arm (1) of the U-shaped rod.

2. The U-shaped rod boring fixture according to claim 1, characterized in that, The lower support plate (12) has a plurality of first mounting holes (12a) on the end facing the chassis (11), and the lower support plate (12) includes: The lower support plate body (12b) has a second mounting hole (12c) on it, and the positioning component cooperates with the second mounting hole (12c); The first support arm (12d) has one end fixed to one end of the lower support plate body (12b); The second support arm (12e) is fixed to the other end of the lower support plate body (12b).

3. The U-shaped rod boring fixture according to claim 1, characterized in that, The positioning assembly includes a positioning post (17) and a positioning seat (18). One end of the positioning post (17) is used to be inserted into the second through hole (4) on the U-shaped rod. A radial boss (17a) is fixed to one end of the positioning post (17). The boss (17a) cooperates with the lower support plate (12). The positioning seat (18) is sleeved on the positioning post (17). The positioning seat (18) is fixed to the lower support plate (12). The boss (17a) is pressed between the lower support plate (12) and the positioning seat (18).

4. The U-shaped rod boring fixture according to claim 1, characterized in that, The first clamping member (13) includes a first bolt (13a) and a first pressure-applying component (13b) that applies pressure to the pressure plate (15). One end of the first bolt (13a) is threadedly connected to the lower support plate (12), and the other end of the first bolt (13a) is fixed to the first pressure-applying component (13b).

5. The U-shaped rod boring fixture according to claim 1, characterized in that, The second clamping member (14) includes a hinge joint (14a), a bolt (14b), and a nut (14c) that applies pressure to the pressure plate (15). The hinge joint (14a) is hinged to the lower support plate (12), one end of the bolt (14b) is fixed to the hinge joint (14a), and the other end of the bolt (14b) is threaded to the nut (14c).

6. The U-shaped rod boring fixture according to claim 1, characterized in that, One end of the pressure plate (15) is provided with a first U-shaped groove (15a) through which the first clamping member (13) passes, and the upper surface of the pressure plate (15) is provided with a first groove (15b) that cooperates with the first clamping member (13). The other end of the pressure plate (15) is provided with a second U-shaped groove (15c) through which the second clamping member (14) passes.

7. The U-shaped rod boring fixture according to claim 1, characterized in that, It also includes fasteners (19) for fixing the pressure plate (15) and the pressure block (16). The pressure block (16) includes a pressure block body (16b), a first clamping arm (16c), and a second clamping arm (16d). A mating groove (16a) is provided at one end of the pressure block body (16b). The first clamping arm (16c) and the second clamping arm (16d) are respectively fixed to the other end of the pressure block body (16b). An assembly groove (16e) is formed between the first clamping arm (16c) and the second clamping arm (16d). The pressure plate (15) cooperates with the assembly groove (16e). The fasteners (19) pass through the first clamping arm (16c), the pressure plate (15), and the second clamping arm (16d).

8. The U-shaped rod boring fixture according to claim 7, characterized in that, It also includes a support component (20), the pressure plate (15) is provided with an assembly hole (15d), the pressure block (16) is provided with a mating groove (16f) located at the bottom of the assembly groove (16e), one end of the support component (20) mates with the assembly hole (15d), and the other end of the support component (20) mates with the assembly groove (16e).

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