Positioning and fixing jig and measuring device

Abstract

The utility model discloses a positioning and fixing jig and a measuring device, the positioning and fixing jig comprises a jig main body and a plurality of positioning and pressing pieces penetrating through the jig main body, the jig main body is used for accommodating a shielding case, and the positioning and pressing pieces are used for pressing measuring positions of the shielding case; one end of the positioning press-fit piece penetrates through the jig body and is provided with a connector, a spring is connected between the connector and the jig body, and the positioning press-fit piece is in sliding connection with the jig body in the telescopic direction of the spring; one end of the positioning press-fit piece is provided with a measuring position, the other end of the positioning press-fit piece is provided with a press-fit structure and a positioning column, the positioning press-fit piece is rotationally connected with the jig body, the jig body is provided with a positioning hole for the positioning column to stretch in, and the measuring position and the positioning hole of the shielding case are respectively arranged on rotation tracks of the press-fit structure and the positioning column. According to the utility model, through the cooperation of the positioning pressing member and the jig main body, the shielding case can be fixed at a fixed point, so that the measuring device can measure the same positions of different shielding racks, the measuring stability is better, and the measuring device is not influenced by manpower.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing jigs, in particular to a positioning fixing jig and a measuring device. Background Art

[0002] Fixtures are devices or tools used to clamp and fix workpieces. They are usually made of metal materials and can be designed and manufactured according to the shape and size of the workpiece. Fixtures are widely used in the manufacturing industry, especially in processes such as machining, assembly, welding and testing.

[0003] Existing positioning and fixing fixtures usually use magnets to press and fix them, and then use a measuring device to measure the size of the pressing position. Since the position of the manually placed magnets is not fixed, the position of the product measurement is also not fixed, resulting in large errors in the measurement results. Utility Model Content

[0004] The main purpose of the utility model is to provide a positioning and fixing fixture and a measuring device, aiming to solve the problem that the existing positioning and fixing fixture leads to large errors in the measurement results of the measuring device.

[0005] To achieve the above-mentioned purpose, the utility model proposes a positioning and fixing fixture, comprising a fixture body and a plurality of positioning and pressing parts arranged through the fixture body, wherein the fixture body is used to accommodate the shielding cover, and the positioning and pressing parts are used to press the measuring position of the shielding cover;

[0006] One end of the positioning and pressing piece passes through the fixture body and is provided with a connecting head, a spring is connected between the connecting head and the fixture body, and the positioning and pressing piece is slidably connected to the fixture body along the expansion and contraction direction of the spring;

[0007] The other end of the positioning pressing piece is provided with a pressing structure and a positioning column. The positioning pressing piece is rotatably connected to the jig body. The jig body is provided with a positioning hole for the positioning column to extend into. The measuring position of the shielding cover and the positioning hole are respectively arranged on the pressing structure and the rotation trajectory of the positioning column.

[0008] Optionally, the fixture body is provided with a boss for placing the shielding cover and a plurality of limiting columns arranged in contact with the side surfaces of the boss, and the limiting columns are used to limit the shielding cover.

[0009] Optionally, the boss is provided with an avoidance groove for avoiding the protrusion of the shielding cover.

[0010] Optionally, the positioning pressing part includes a detachable pressing head and a connecting rod, the pressing structure and the positioning column are arranged on the pressing head, the connecting head is arranged on the connecting rod, and the spring sleeve is arranged on the connecting rod.

[0011] Optionally, a stud is provided at one end of the connecting rod, and the pressing head is provided with a screw hole for threaded connection with the stud.

[0012] Optionally, a first hole for mounting the positioning column is provided on a side of the pressing head close to the jig body, and a second hole communicating with the first hole is provided on a side of the pressing head away from the jig body.

[0013] Optionally, chamfered structures are provided at both ends of the positioning column.

[0014] Optionally, a hexagonal hole is provided on the connecting head.

[0015] Optionally, the fixture body is provided with at least four legs.

[0016] In addition, the utility model also proposes a measuring device, which includes a measuring module and the positioning and fixing fixture described above, and the measuring module is used to measure the height of the positioning and pressing part.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the utility model can realize fixed-point fixation of the shielding cover through the cooperation of the positioning pressing piece and the jig body, so that the measuring device can measure the same position of different shielding frames, and the measurement stability is better and not affected by human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional schematic diagram of the positioning and fixing fixture of the utility model loaded with a shielding frame;

[0020] Figure 2 It is a three-dimensional schematic diagram of the positioning and fixing fixture of the utility model;

[0021] Figure 3 It is an exploded schematic diagram of the positioning pressing piece of the utility model.

[0022] Description of Figure Numbers:

[0023] 1. Fixture body; 2. Positioning pressing part; 3. Shielding frame; 11. Positioning hole; 12. Boss; 13. Limiting column; 14. Avoidance groove; 15. Support foot; 21. Connector; 22. Press head; 23. Pressing structure; 24. Positioning column; 25. Connecting rod; 26. Spring; 27. Stud; 211. Hexagon socket hole; 221. Screw hole; 241. First hole; 242. Second hole.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] The utility model provides a positioning and fixing fixture. Figures 1 to 3 This is a specific embodiment of the positioning and fixing fixture provided by the utility model.

[0029] Reference Figures 1 to 3The positioning and fixing fixture comprises a fixture body 1 and a plurality of positioning and pressing parts 2 arranged through the fixture body 1, wherein the fixture body 1 is used to accommodate the shielding cover, and the positioning and pressing parts 2 are used to press the measuring position of the shielding cover;

[0030] One end of the positioning and pressing member 2 passes through the fixture body 1 and is provided with a connecting head 21, a spring 26 is connected between the connecting head 21 and the fixture body 1, and the positioning and pressing member 2 is slidably connected to the fixture body 1 along the expansion and contraction direction of the spring 26;

[0031] The other end of the positioning pressing piece 2 is provided with a pressing structure 23 and a positioning column 24. The positioning pressing piece 2 is rotatably connected to the jig body 1. The jig body 1 is provided with a positioning hole 11 for the positioning column 24 to extend into. The measuring position of the shielding cover and the positioning hole 11 are respectively arranged on the rotation trajectory of the pressing structure 23 and the positioning column 24.

[0032] The positioning and fixing jig of the utility model has a positioning and pressing piece 2 that can rotate relative to the jig body 1, so that when loading or disassembling the shielding frame 3, the positioning and pressing piece 2 can be rotated to the outside of the boss 12 to avoid blocking the shielding frame 3, so that the shielding frame 3 can be placed on the boss 12 conveniently. When it is necessary to press and fix the shielding frame 3, the positioning and pressing piece 2 can be pulled up first to avoid the side wall of the shielding frame 3 from blocking the pressing structure 23 and the positioning column 24, and then the positioning and pressing piece 2 can be rotated to make the positioning column 24 extend into the positioning hole 11, and then the positioning and pressing piece 2 is released. Under the elastic force of the spring 26, the positioning and pressing piece 2 presses and fixes the shielding frame 3 through the pressing structure 23, so that the loading and disassembly of the shielding frame 3 is convenient; and due to the positioning effect of the positioning column 24 and the positioning hole 11, the pressing position of the pressing structure 23 can be ensured to remain fixed, thereby improving the measurement stability of the measuring device.

[0033] The fixture body 1 is provided with a boss 12 for placing the shielding cover and a plurality of limiting columns 13 arranged on the side of the boss 12, and the limiting columns 13 are used to limit the shielding cover. By providing the boss 12, the shielding cover can be raised, and the distance between the measuring position of the shielding cover and the pressing structure 23 can be reduced, so that the pressing structure 23 can press the shielding cover more tightly, thereby improving the measurement accuracy of the measuring position of the shielding cover. The limiting columns 13 can limit the shielding cover on the boss 12 to prevent the shielding cover from being offset and causing inaccurate measurement.

[0034] The boss 12 is provided with an avoidance groove 14 for avoiding the protrusion of the shielding cover. The function of the shielding cover is to shield electromagnetic signals, and its top surface is usually provided with structures such as protrusions and through holes. When the shielding cover is fixed in the utility model, the shielding cover is placed upside down on the boss 12. By providing the avoidance groove 14, the problem of the protrusion on the surface of the shielding cover raising it and affecting the measurement accuracy can be avoided.

[0035] The positioning and pressing part 2 includes a detachable pressing head 22 and a connecting rod 25, the pressing structure 23 and the positioning column 24 are arranged on the pressing head 22, the connecting head 21 is arranged on the connecting rod 25, and the spring 26 is sleeved on the connecting rod 25. The connecting rod 25 is arranged through the jig body 1, and the pressing head 22 and the connecting rod 25 are respectively located on both sides of the jig body 1. The positioning and pressing part 2 can be disassembled into the pressing head 22 and the connecting rod 25, so as to be installed on the jig body 1.

[0036] Furthermore, a stud 27 is provided at one end of the connecting rod 25, and the pressing head 22 is provided with a screw hole 221 for threaded connection with the stud 27. The pressing head 22 is threadedly connected to the connecting rod 25 to ensure the connection stability between the pressing head 22 and the connecting rod 25. Specifically, the diameter of the stud 27 is set to be smaller than the diameter of the connecting rod 25, so that the connecting rod 25 does not extend excessively into the pressing head 22, thereby ensuring that the length of each positioning pressing member 2 is consistent.

[0037] A first hole 241 for installing the positioning column 24 is provided on a side of the press head 22 close to the fixture body 1, and a second hole 242 communicating with the first hole 241 is provided on a side of the press head 22 away from the fixture body 1. Specifically, the first hole 241 is interference-fitted with the positioning column 24, and the positioning column 24 is used to extend into the first hole 241 to connect with the press head 22. The diameter of the second hole 242 is smaller than the diameter of the first hole 241, and the second hole 242 is used for a shaft or rod with a smaller diameter to extend therein, so as to push out the positioning column 24.

[0038] The two ends of the positioning column 24 are provided with chamfered structures. The chamfered structures can form a conical surface on the positioning column 24, and the positioning column 24 can be guided by the conical surface, so that the positioning column 24 can be more easily inserted into the positioning hole 11, thereby accelerating the measurement speed.

[0039] The connector 21 is provided with a hexagonal hole 211. The hexagonal hole 211 allows a hexagonal wrench to be inserted, so that the connecting rod 25 can be rotated by the hexagonal wrench, so that the connecting rod 25 is easier to connect with the pressure head 22, and the connection is more tightly.

[0040] The fixture body 1 is provided with at least four legs 15. The legs 15 can be used to raise the fixture body 1 so that the connector 21 does not contact the desktop or the ground, thereby preventing the desktop or the ground from lifting the positioning pressing member 2 and affecting the measurement accuracy.

[0041] Since the pressing structure 23 needs to fit with the shielding cover, in order to ensure the measurement accuracy, the pressing structure 23 cannot be deformed, needs to have a high hardness and is not easy to oxidize. In addition, the surface of the pressing structure 23 needs to be smooth and can fit tightly with the shielding cover. Stainless steel has excellent corrosion resistance, high strength and hardness, and a smooth surface. Therefore, the material of the pressing structure 23 can be set to stainless steel.

[0042] The present invention also proposes a measuring device, which includes a measuring module and a positioning and fixing fixture. The specific structure of the positioning and fixing fixture refers to the above-mentioned embodiment. Since the measuring device proposed by the present invention includes all schemes of all embodiments of the above-mentioned positioning and fixing fixture, it has at least the same technical effect as the positioning and fixing fixture, which will not be elaborated here one by one.

[0043] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A positioning fixture for fixing a shielding cover, characterized in that: It comprises a jig body and a plurality of positioning and pressing parts arranged through the jig body, wherein the jig body is used to accommodate the shielding cover, and the positioning and pressing parts are used to press the measuring position of the shielding cover; One end of the positioning and pressing piece passes through the fixture body and is provided with a connecting head, a spring is connected between the connecting head and the fixture body, and the positioning and pressing piece is slidably connected to the fixture body along the expansion and contraction direction of the spring; The other end of the positioning pressing piece is provided with a pressing structure and a positioning column. The positioning pressing piece is rotatably connected to the jig body. The jig body is provided with a positioning hole for the positioning column to extend into. The measuring position of the shielding cover and the positioning hole are respectively arranged on the pressing structure and the rotation trajectory of the positioning column.

2. The positioning and fixing fixture according to claim 1, characterized in that: The fixture body is provided with a boss for placing the shielding cover and a plurality of limiting columns arranged in contact with the side surfaces of the boss, and the limiting columns are used to limit the shielding cover.

3. The positioning and fixing fixture according to claim 2, characterized in that: The boss is provided with an avoidance groove for avoiding the protrusion of the shielding cover.

4. The positioning and fixing fixture according to claim 1, characterized in that: The positioning pressing part comprises a detachable pressing head and a connecting rod, the pressing structure and the positioning column are arranged on the pressing head, the connecting head is arranged on the connecting rod, and the spring sleeve is arranged on the connecting rod.

5. The positioning and fixing fixture according to claim 4, characterized in that: A stud is provided at one end of the connecting rod, and the pressing head is provided with a screw hole for threaded connection with the stud.

6. The positioning and fixing fixture according to claim 4, characterized in that: A first hole for installing the positioning column is provided on a side of the pressing head close to the fixture body, and a second hole communicating with the first hole is provided on a side of the pressing head away from the fixture body.

7. The positioning and fixing fixture according to claim 6, characterized in that: Both ends of the positioning column are provided with chamfered structures.

8. The positioning and fixing fixture according to claim 4, characterized in that: The connecting head is provided with a hexagonal hole.

9. The positioning and fixing fixture according to claim 1, characterized in that: The fixture body is provided with at least four supporting legs.

10. A measuring device, characterized in that: It comprises a measuring module and a positioning and fixing fixture as described in any one of claims 1 to 9, wherein the measuring module is used to measure the height of the positioning measuring piece.

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