Double-hole plate machining and positioning jig

Abstract

The utility model relates to the technical field of double-hole plate machining and fixing, in particular to a double-hole plate machining and positioning jig. The double-hole plate machining positioning jig comprises a U-shaped frame, transverse plates extending in the opposite direction are fixedly embedded in top plates on the two sides of the U-shaped frame, air storage cavities are formed in the transverse plates, abutting assemblies are installed on the lower plate walls of the transverse plates, a bearing plate in sliding connection is installed in the U-shaped frame, two symmetrically-distributed pull handles are fixedly installed at one end of the bearing plate, and the two ends of the bearing plate are fixedly connected with the air storage cavities. Horizontally-arranged push rods are fixedly mounted on the pull handles, and pistons are fixedly mounted at the extending ends of the push rods. According to the positioning jig for machining the double-hole plate, the pressing plate at the bottom of the elastic wrinkled air bag is firmly pressed on the double-hole plate to complete positioning, the expanded elastic wrinkled air bag is of an elastic structure, so that the hidden danger that the double-hole plate is ineffective to fix due to vibration of the double-hole plate on the bearing plate during machining is eliminated, and the overall operation is simple, convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of double-hole plate processing and fixing, in particular to a positioning fixture for double-hole plate processing. Background Art

[0002] A double-hole plate is usually composed of two standard orifice plates, which are arranged in a pipeline and maintain a certain distance. From the flow direction, the orifice diameter of the upstream orifice plate (usually called the auxiliary orifice plate) is larger than that of the downstream orifice plate (the main orifice plate). This structural design enables the double-hole plate to measure the flow rates of liquids and gases with low Reynolds numbers under specific conditions; when processing the double-hole plate, an auxiliary positioning fixture is required to avoid deviation during processing and affect the processing quality. For existing positioning fixtures, generally, a screw is used to drive a clamping block to descend and abut against the plate, and the plate is fixed by pressing to increase the frictional force. For example, in the comparative document (a fixing device for circuit board cutting and processing with the application number CN202021887969.2), this method only applies a force in one direction to the plate, resulting in poor stability and easy deviation; there are also those that clamp the plate by generating pressures in two directions, such as the comparative document (a fixing fixture for porous plate stamping with the application number CN202122548288.4) and the comparative document (a fixing device for plate-type abrasive tool processing with the application number CN201921188711.0). Although the plate is clamped by forces in two different directions, improving the stability, the structures applying forces in two directions need to be controlled separately, increasing the preparation time for plate processing and reducing the processing efficiency.

[0003] Therefore, it is necessary to provide a new positioning fixture for double-hole plate processing to solve the above technical problems. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a positioning fixture for double-hole plate processing.

[0005] The positioning fixture for double-hole plate processing provided by the utility model includes a U-shaped frame. Transverse plates extending towards each other are fixedly embedded in the top plates on both sides of the U-shaped frame, and an air storage cavity is formed in each transverse plate. A clamping component is installed on the lower plate wall of the transverse plate;

[0006] The clamping component includes an elastic corrugated airbag, which is fixedly embedded in the lower plate wall of the transverse plate. A pressing plate is fixedly installed on the lower airbag surface of the elastic corrugated airbag, and the elastic corrugated airbag is interconnected with the end of the air storage cavity through a conduit;

[0007] A bearing plate is installed inside the U-shaped frame in a sliding connection manner, and two symmetrically distributed pull handles are fixedly installed at one end of the bearing plate. A horizontally arranged push rod is fixedly installed on each pull handle, and the push rod passes through a threaded through hole opened at the end of the cross plate and extends into the air storage cavity. A piston is fixedly installed at the extended end of the push rod.

[0008] Preferably, an annular groove is opened at the horizontal connection end of the pull handle, and a threaded cylinder for connecting the threaded through hole is arranged on the annular groove.

[0009] Preferably, a coaxial socket ring is fixedly installed at one end of the threaded cylinder. The socket ring is sleeved on the annular groove opened at the horizontal connection end of the pull handle and is rotatably connected to the annular groove.

[0010] Preferably, side cavities are opened on the inner plate walls on both sides of the U-shaped frame, and sliding rods are fixedly installed in the side cavities.

[0011] Preferably, sliding seats are fixedly installed on both side walls of the end face of the bearing plate away from the pull handle, and the two sliding seats are respectively sleeved on the two sliding rods and are slidably connected to the sliding rods.

[0012] Preferably, a spring is strung on each sliding rod.

[0013] Preferably, one end of the spring is fixedly connected to the inner wall of the side cavity close to the threaded through hole, and the other end of the spring is fixedly connected to one end of the sliding seat close to the pull handle.

[0014] Compared with the related art, the double-hole plate processing positioning fixture provided by the present utility model has the following beneficial effects:

[0015] After placing the double-hole plate on the bearing plate in the present utility model, when the pull handle is pushed inwards and the bearing plate slides into the U-shaped frame, the piston pushes the gas in the air storage cavity into the elastic corrugated airbag, thereby driving the elastic corrugated airbag to expand and extend downwards, so that the pressing plate at the bottom of the elastic corrugated airbag firmly presses on the double-hole plate to complete positioning. Since the expanded elastic corrugated airbag is an elastic structure, the hidden danger of the double-hole plate being fixed invalid due to vibration during processing on the bearing plate is eliminated, and the overall operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a preferred embodiment of the double-hole plate processing positioning fixture provided by the present utility model;

[0017] Figure 2 is Figure 1 a schematic cross-sectional structure diagram of the abutting component on the U-shaped frame shown;

[0018] Figure 3 isFigure 1 Schematic structural diagram of the shown bearing plate;

[0019] Figure 4 For Figure 3 Schematic structural diagram of the shown threaded cylinder.

[0020] Reference numerals in the figure: 1, U-shaped frame; 1a, side cavity; 11, cross plate; 11a, air storage cavity; 11b, threaded through hole; 12, sliding rod; 2, bearing plate; 21, sliding seat; 22, pull handle; 22a, annular groove; 23, push rod; 24, piston; 3, abutting component; 31, elastic corrugated airbag; 32, pressing plate; 4, threaded cylinder; 41, socket ring; 5, spring. Specific embodiments

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] The following describes in detail the specific implementation of the present utility model with reference to specific embodiments.

[0023] Please refer to Figures 1 to 4 , a double-hole plate processing positioning jig provided by an embodiment of the present utility model, the double-hole plate processing positioning jig includes: a U-shaped frame 1, a bearing plate 2 and an abutting component 3.

[0024] In an embodiment of the present utility model, please refer to Figure 1 , Figure 2 and Figure 3 , a bearing plate 2 is slidably connected inside the U-shaped frame 1. Specifically, side cavities 1a are provided on the inner plate walls on both sides of the U-shaped frame 1, and sliding rods 12 are fixedly installed inside the side cavities 1a. On both side walls of the end surface of the bearing plate 2 away from the pull handle 22, sliding seats 21 are fixedly installed, and the two sliding seats 21 are respectively sleeved on the two sliding rods 12 and are slidably connected to the sliding rods 12;

[0025] On the top plates on both sides of the U-shaped frame 1, cross plates 11 extending towards each other are fixedly embedded, and an air storage cavity 11a is provided inside each cross plate 11, and an abutting component 3 is installed on the lower plate wall of the cross plate 11.

[0026] It should be noted that when processing the double-hole plate, pull the pull handle 22 outwards so that the bearing plate 2 slides out along the sliding rod 12 through the sliding seat 21, so that the bearing plate 2 can slide out of the U-shaped frame 1. At this time, place the double-hole plate on the placing area of the bearing plate 2, and then push the pull handle 22 inwards so that the bearing plate 2 slides into the U-shaped frame 1, so that the abutting component 3 firmly presses on the double-hole plate to position it;

[0027] Among them, a spring 5 is connected in series on each of the sliding rods 12. One end of the spring 5 is fixedly connected to the inner wall of the side cavity 1a close to the threaded through hole 11b, and the other end of the spring 5 is fixedly connected to one end of the sliding seat 21 close to the pull handle 22. When the bearing plate 2 slides out along the sliding rod 12, the spring 5 is compressed. When the pull handle 22 is pushed in later to make the bearing plate 2 slide to the U-shaped frame 1, the inner pushing force of the staff is reduced under the elastic force of the compressed spring 5.

[0028] In an embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the abutting component 3 includes an elastic corrugated airbag 31. The elastic corrugated airbag 31 is fixedly embedded in the lower plate wall of the cross plate 11. A pressing plate 32 is fixedly installed on the lower airbag surface of the elastic corrugated airbag 31. The elastic corrugated airbag 31 is interconnected with the end of the air storage cavity 11a through a conduit. Two symmetrically distributed pull handles 22 are fixedly installed at one end of the bearing plate 2. A horizontally arranged push rod 23 is fixedly installed on each of the pull handles 22. The push rod 23 passes through the threaded through hole 11b opened at the end of the cross plate 11 and extends into the air storage cavity 11a. A piston 24 is fixedly installed at the extended end of the push rod 23;

[0029] A circular groove 22a is opened at the horizontal connection end of the pull handle 22, and a threaded cylinder 4 for connecting the threaded through hole 11b is arranged on the circular groove 22a. One end of the threaded cylinder 4 is fixedly installed with a coaxially arranged socket ring 41. The socket ring 41 is sleeved on the circular groove 22a opened at the horizontal connection end of the pull handle 22 and is rotatably connected to the circular groove 22a.

[0030] It should be noted that: when the pull handle 22 is pulled outwards to make the bearing plate 2 slide out along the sliding rod 12 through the sliding seat 21, the piston 24 slides out along the air storage cavity 11a, so that the air storage cavity 11a generates negative pressure and adsorbs the gas in the elastic corrugated airbag 31, causing the elastic corrugated airbag 31 to fold and contract. Therefore, a gap is left between the pressing plate 32 and the bearing plate 2;

[0031] When the pull handle 22 is pushed inwards to make the bearing plate 2 slide into the U-shaped frame 1, the piston 24 pushes the gas in the air storage cavity 11a into the elastic corrugated airbag 31, thereby driving the elastic corrugated airbag 31 to expand and extend downwards, so that the pressing plate 32 at the bottom of the elastic corrugated airbag 31 firmly presses on the double-hole plate to complete positioning. Since the expanded elastic corrugated airbag 31 is an elastic structure, the hidden danger of the double-hole plate becoming fixed and ineffective due to vibration during processing on the bearing plate 2 is eliminated;

[0032] After the root of the push rod 23 is inserted into the threaded through hole 11b, rotate the threaded cylinder 4 so that the threaded cylinder 4 is inserted into the threaded through hole 11b and is threadedly and fixedly connected to the threaded through hole 11b.

[0033] The working principle of the double-hole plate processing positioning jig provided by the present utility model is as follows:

[0034] When processing the double-hole plate, pull the pull handle 22 outwards so that the bearing plate 2 slides outwards along the sliding rod 12 through the sliding seat 21, so that the bearing plate 2 can slide out of the U-shaped frame 1. At this time, place the double-hole plate in the placing area of the bearing plate 2, and then push the pull handle 22 inwards so that the bearing plate 2 slides into the U-shaped frame 1, so that the abutting assembly 3 firmly presses on the double-hole plate to position it. Specifically:

[0035] When pulling the pull handle 22 outwards so that the bearing plate 2 slides outwards along the sliding rod 12 through the sliding seat 21, the piston 24 slides outwards along the air storage cavity 11a, so that the air storage cavity 11a generates negative pressure and adsorbs the gas in the elastic wrinkled airbag 31, causing the elastic wrinkled airbag 31 to wrinkle and contract. Therefore, there is a gap between the pressing plate 32 and the bearing plate 2. When pushing the pull handle 22 inwards so that the bearing plate 2 slides into the U-shaped frame 1, the piston 24 pushes the gas in the air storage cavity 11a into the elastic wrinkled airbag 31, thereby driving the elastic wrinkled airbag 31 to expand and extend downwards, so that the pressing plate 32 at the bottom of the elastic wrinkled airbag 31 firmly presses on the double-hole plate to complete the positioning. Since the expanded elastic wrinkled airbag 31 is an elastic structure, the hidden danger that the double-hole plate is fixed invalid due to vibration during processing on the bearing plate 2 is eliminated;

[0036] After the root of the push rod 23 is inserted into the threaded through hole 11b, rotate the threaded cylinder 4 so that the threaded cylinder 4 is inserted into the threaded through hole 11b and is threadedly and fixedly connected to the threaded through hole 11b.

[0037] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A double-hole plate processing positioning fixture, characterized in that: It comprises a U-shaped frame (1), the top plates on both sides of the U-shaped frame (1) are fixedly embedded with transverse plates (11) extending towards each other, and each of the transverse plates (11) is provided with an air storage cavity (11a), and the lower plate wall of the transverse plate (11) is installed with an abutment component (3); The abutment assembly (3) comprises an elastic pleated airbag (31), the elastic pleated airbag (31) is fixedly embedded on the lower plate wall of the transverse plate (11), and a pressing plate (32) is fixedly installed on the lower bag surface of the elastic pleated airbag (31), and the elastic pleated airbag (31) is connected to the end of the air storage chamber (11a) through a conduit; A slidably connected supporting plate (2) is installed in the U-shaped frame (1), and two symmetrically distributed pull handles (22) are fixedly installed at one end of the supporting plate (2), and a horizontally arranged push rod (23) is fixedly installed on each of the pull handles (22), and the push rod (23) passes through a threaded through hole (11b) opened at the end of the cross plate (11) and extends into the air storage chamber (11a), and a piston (24) is fixedly installed at the extended end of the push rod (23).

2. The double-hole plate processing positioning fixture according to claim 1 is characterized in that: The horizontal connection end of the pull handle (22) is provided with an annular groove (22a), and a threaded barrel (4) for connecting to a threaded through hole (11b) is provided on the annular groove (22a).

3. The double-hole plate processing positioning fixture according to claim 2 is characterized in that: A coaxially arranged sleeve ring (41) is fixedly mounted on one end of the threaded cylinder (4); the sleeve ring (41) is sleeved on an annular groove (22a) provided at the horizontal connecting end of the pull handle (22) and is rotatably connected to the annular groove (22a).

4. The double-hole plate processing positioning fixture according to claim 1 is characterized in that: The inner plate walls on both sides of the U-shaped frame (1) are provided with side cavities (1a), and sliding rods (12) are fixedly installed in the side cavities (1a).

5. The double-hole plate processing positioning fixture according to claim 4 is characterized in that: Sliding seats (21) are fixedly mounted on both side walls of the end surface of the bearing plate (2) away from the handle (22), and the two sliding seats (21) are respectively sleeved on two sliding rods (12) and slidably connected to the sliding rods (12).

6. The double-hole plate processing positioning fixture according to claim 4, characterized in that: Each of the sliding rods (12) is serially connected with a spring (5).

7. The double-hole plate processing positioning fixture according to claim 6 is characterized in that: One end of the spring (5) is fixedly connected to the inner wall of the side cavity (1a) close to the threaded through hole (11b), and the other end of the spring (5) is fixedly connected to one end of the sliding seat (21) close to the handle (22).

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