CN215832686U

CN215832686U - Test fixture

Info

Publication number: CN215832686U
Application number: CN202122144292.4U
Authority: CN
Inventors: 吕明静; 过丽萍; 孟伟青; 冀科锋
Original assignee: ACME ELECTRONICS (KUNSHAN) CO LTD
Current assignee: ACME ELECTRONICS (KUNSHAN) CO LTD
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-15
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a test fixture, which comprises a base plate and two support column devices, wherein a sliding groove is formed in the length direction of the base plate; the support column device comprises a sliding seat and two support columns connected to two ends of the top surface of the sliding seat, the sliding seat is in sliding connection with the sliding groove, the support columns are perpendicular to the top surface of the sliding seat, and the two support columns in the support column device are symmetrically arranged relative to the center line of the base plate in the width direction; the support column is connected with a chuck in a sliding manner, and the chuck and the base plate are obliquely arranged in the length direction. This application can guarantee the firm of product centre gripping because the combined action of four holding heads, hold up the product when preventing the test of product bottom surface, has guaranteed the validity of product side test and bottom surface test.

Description

Test fixture

Technical Field

The utility model relates to the technical field of product detection, in particular to a test fixture.

Background

The existing test for ceramic products such as iron cores requires that products are placed on a test board and then fixed for testing. At present, a test fixture is used as shown in fig. 1, which clamps a product by using chucks on two sides to complete the inspection and measurement of form and position tolerances such as flatness, verticality and the like.

The existing test fixture has the following defects: when testing the side surface of a product clamped by the original jig, if the product is thinner, the probe head can not easily touch the side surface of the product, and data can not be tested. When testing the back surface of the product clamped by the jig, the probe head is easy to lift the product when touching the back surface of the product, so that the test fails. How to design a jig, which can effectively realize the test of the side and the back of a product, is a problem that needs to be solved.

Disclosure of Invention

The utility model aims to provide a test fixture to solve the problem that the side and bottom surfaces of a product are difficult to detect in the prior art.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

a test fixture, comprising:

the base plate is provided with a sliding groove in the length direction;

the two support column devices comprise sliding seats and two support columns connected to two ends of the top surfaces of the sliding seats, the sliding seats are connected with the sliding grooves in a sliding mode, the support columns are perpendicular to the top surfaces of the sliding seats, and the two support columns in the support column devices are symmetrically arranged around a central line in the width direction of the base plate;

the support column is connected with a chuck in a sliding mode, and the chuck and the length direction of the base plate are arranged in an inclined mode.

Furthermore, a screw rod is rotatably connected to the base plate, two sections of threads with opposite rotating directions are arranged on the screw rod, a sliding seat in one support column device is in threaded connection with a forward thread section of the screw rod, and a sliding seat in the other support column device is in threaded connection with a reverse thread section of the screw rod.

Further, the chuck comprises a clamping part and two connecting arms connected to the tail ends of the clamping part;

two through grooves are formed in the supporting column, and two connecting arms of the chuck are connected in the through grooves in a sliding mode;

and a screw hole is further formed between the two through grooves, a screw rod is rotationally connected in the screw hole, and the tail end of the screw rod is in contact connection with the clamping part.

Further, the shape of the clamping groove of the clamping part is arc-shaped.

Further, the shape of the clamping groove of the clamping part is triangular.

Further, the sliding seat is in an I shape.

Furthermore, both ends all rotate about the bed plate and are connected with the screw rod, both ends the screw rod respectively with two sliding seat threaded connection among the support column device.

According to the technical scheme, the embodiment of the utility model at least has the following effects:

1. the jig comprises two supporting column devices, each supporting column device comprises two supporting columns, clamping heads are connected to the supporting columns in a sliding mode, when the jig is used, the four-corner clamping heads or the supporting column devices at two ends can slide, or the supporting column devices at two ends and the four clamping heads can slide simultaneously to clamp and fix a product, one corner of the product can be clamped by the four clamping heads respectively, the clamping and fixing effect of the product can be effectively guaranteed, a space is provided for the testing heads to complete side face testing, due to the combined action of the four clamping heads, the product can be guaranteed to be clamped firmly, the product is prevented from being supported when the bottom face of the product is tested, and the effectiveness of the bottom face testing of the product is guaranteed;

2. by designing the screw rod with the thread sections with opposite rotation directions on the base plate, the two support column devices can be moved close to or away from each other by rotating the screw rod, so that the two support column devices can be controlled to move in the test process conveniently;

3. this application chuck design has clamping part and linking arm, and through rotating the screw rod and promoting the clamping part, the linking arm of connecting on the clamping part slides in leading to the groove, has guaranteed the gliding effect of chuck.

Drawings

FIG. 1 is a diagram illustrating a test fixture clamping a product in the prior art;

FIG. 2 is a schematic view of a product held by the test fixture of the present invention;

FIG. 3 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a support column assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of the connection of the collet to the support post in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of a chuck in one example of an embodiment of the present invention;

FIG. 7 is a schematic view of a chuck according to various embodiments of the present invention.

Wherein: 1. a base plate; 11. a chute; 2. a support post arrangement; 21. a sliding seat; 22. a support pillar; 221. a through groove; 222. a screw hole; 3. a chuck; 31. a clamping portion; 32. a connecting arm; 4. a screw.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 2 and 7, a testing fixture includes a base plate 1 and two supporting column devices 2, wherein a sliding groove 11 is formed in the length direction of the base plate 1; the supporting column device 2 comprises a sliding seat 21 and two supporting columns 22 connected to two ends of the top surface of the sliding seat 21, the sliding seat 21 is connected with the sliding chute 11 in a sliding manner, the supporting columns 22 are perpendicular to the top surface of the sliding seat 21, and the two supporting columns 22 in the supporting column device 2 are symmetrically arranged relative to the central line of the base plate 1 in the width direction; the supporting column 22 is connected with a clamping head 3 in a sliding way, and the clamping head 3 and the base plate 1 are obliquely arranged in the length direction.

The tool of this application design includes two support column devices, every support column device includes two support columns, sliding connection has the chuck on the support column, in use, the support column device at accessible slip four corners chuck or slip both ends, or the support column device at slip both ends simultaneously and four chucks realize fixed to the centre gripping of product, four holding heads centre gripping product one corner respectively can the effectual fixed effect of centre gripping of assurance product, for the test head accomplishes the side test and provides the space, because the combined action of four holding heads, can guarantee the firm of product centre gripping, hold up the product when preventing the test of product bottom surface, the validity of product bottom surface test has been guaranteed.

The present application is specifically illustrated below by three examples.

Example 1

As shown in fig. 2 to 6, the collet 3 designed in this embodiment is shown in fig. 6, the collet 3 includes a clamping portion 31 and two connecting arms 32 at the end of the clamping portion 31, and the shape of the clamping groove of the clamping portion 31 is triangular. The shape design can be suitable for square products, such as rectangular plate products, square plate products and the like.

The chuck 3 is slidably connected to the supporting column 22 through the connecting arm 32 at the end, specifically, two through slots 221 adapted to the connecting arm 32 are provided on the supporting column 22, and during installation, the connecting arm 32 of the chuck 3 is inserted into the through slot 221. A screw hole 222 is further formed between the two through grooves 221, a screw rod is connected to the screw hole through an internal thread, and the tail end of the screw rod is in contact connection with the clamping portion 31. When the clamping device is used, the connecting arm 32 is pulled firstly, the clamping part is in place, then the screw rod is rotated, the tail end of the screw rod is contacted with the clamping part 31, the clamping heads are limited to move outwards, and the movement of the clamping heads is limited by the products when the products exist among the plurality of clamping heads and the clamping heads move inwards. This design facilitates the position adjustment of the collet 3.

In order to facilitate the adjustment of the screw rod, a handle can be welded on the screw rod, and the screw rod is adjusted by rotating the handle, so that the use is convenient.

Support column device 2 is provided with two in this application, and two support column devices set up respectively in the left and right sides of bed plate 1, and support column device 2 slides, makes the chuck among the support column device of both sides be close to each other in order to accomplish the centre gripping of product, the subsequent test work of being convenient for.

Specifically, the support column device 2 includes an i-shaped sliding seat 21, the sliding seat 21 may be designed in other shapes, and the i-shaped sliding seat 21 is designed in the present application to facilitate the sliding of the sliding seat 21, and to ensure the stability of the support column 22 connected to the sliding seat 21. Specifically, threaded holes are designed in the transverse plate at the bottom of the I-shaped sliding seat 21, the transverse plate at the bottom is connected in the sliding grooves 11 of the base plate 1 in a sliding mode, the transverse plate at the top of the sliding seat 21 is in contact with the top surface of the base plate 1, the supporting effect is guaranteed, and then the stability of the supporting columns 22 connected with the sliding seat is guaranteed.

Screw hole and screw rod 4 through the diaphragm in sliding seat 21 bottom are connected, and the both ends of screw rod 4 are passed through the bearing and are rotated and connect on the bed plate 1, and one end runs through to the bed plate 1 outside, rotates the screw rod and can realize sliding seat 21's slip.

In this embodiment, the screw rod 4 has two screw thread sections with opposite rotation directions, and the support pillar devices on both sides can be moved closer to or farther away from each other by rotating the screw rod 4.

In this embodiment, the specific process of the product test is as follows: the screw rod 4 is rotated to enable the supporting column devices 2 at the two ends to move properly, then the product is fixed by moving the chuck 3, the positioning points are found to be aligned, the test is started, the probes can extend to the side face and the back face of the product, and the parallelism, the flatness, the perpendicularity and the like of the side face and the back face are tested. Because four chucks in two support column devices act together, the clamping effect of the product can be guaranteed, so when the back test is carried out, the probe cannot push up the product, and the test of the side face and the back of the product can be effectively finished.

Example 2

The structure and the test procedure of this embodiment are substantially the same as those of embodiment 1, and are different from embodiment 1 in the shape design of the collet 3 of this application, as shown in fig. 7, the shape of the clamping groove of the clamping portion of the collet 3 of this application is an arc, and the design of the arc groove can be applied to the clamping of a product with a circular or arc edge.

Example 3

The structure and test procedure of this embodiment are substantially the same as those of embodiment 1, and are different from embodiment 1 in that the screw design of embodiment 1 is not adopted in this embodiment. This application adopts two screw rod designs, and two screw rods are connected with two support column devices respectively. According to the design, a screw rod is rotated firstly to complete preliminary positioning in the testing process, and then the screw rod is rotated to complete clamping and fixing of a product, so that the product is convenient to position.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. A test fixture, comprising:

the base plate (1), the length direction of the base plate (1) is provided with a chute (11);

the two support column devices (2), each support column device (2) comprises a sliding seat (21) and two support columns (22) connected to two ends of the top surface of the sliding seat (21), the sliding seat (21) is connected with the sliding chute (11) in a sliding manner, the support columns (22) are perpendicular to the top surface of the sliding seat (21), and the two support columns (22) in the support column devices (2) are symmetrically arranged about the center line of the base plate (1) in the width direction;

support column (22) go up sliding connection and have chuck (3), chuck (3) with the length direction slope setting of bed plate (1).

2. The test fixture according to claim 1, wherein the base plate (1) is rotatably connected with a screw (4), the screw (4) has two threads with opposite rotation directions, the sliding seat (21) of one support column device (2) is in threaded connection with the forward thread section of the screw (4), and the sliding seat (21) of the other support column device (2) is in threaded connection with the reverse thread section of the screw (4).

3. The test fixture according to claim 1, wherein the collet (3) comprises a clamping portion (31) and two connecting arms (32) connected to the ends of the clamping portion (31);

two through grooves (221) are formed in the supporting column (22), and two connecting arms (32) of the chuck (3) are connected into the through grooves (221) in a sliding mode;

a screw hole (222) is further formed between the two through grooves (221), a screw rod is rotatably connected in the screw hole (222), and the tail end of the screw rod is in contact connection with the clamping portion (31).

4. A test fixture according to claim 3, characterized in that the clamping groove of the clamping portion (31) is arc-shaped.

5. A test fixture according to claim 3, characterized in that the shape of the clamping groove of the clamping portion (31) is triangular.

6. The test fixture according to claim 1, wherein the sliding seat (21) is i-shaped.

7. The test fixture according to claim 1, wherein the left and right ends of the base plate (1) are rotatably connected with screws (4), and the screws (4) at the two ends are respectively in threaded connection with the sliding seats (21) of the two support column devices (2).