CN113640653A

CN113640653A - Horizontal flying needle machine using linear motor

Info

Publication number: CN113640653A
Application number: CN202111082760.8A
Authority: CN
Inventors: 杨成; 陈飞; 黄淼兰; 吴彩仙; 郭玉栋
Original assignee: Joint Stars Technology Co Ltd
Current assignee: Joint Stars Technology Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-11-12

Abstract

The invention discloses a horizontal flying probe machine using a linear motor. A first linear driver and a second linear driver are arranged between the first linear guide rail and the second linear guide rail, and a first test head and a second test head are respectively installed on the first linear driver and the second linear driver. The first linear driver is connected with the first linear motor and the second linear motor; the horizontal flying needle machine adopts the driving mode of the linear motor double mover, which can make up for the deviation caused by the unilateral arrangement of the screw rod, The problem of unilateral wear and poor accuracy. The position of the linear motor is determined by the grating ruler, which has higher precision; the linear motor is flexible in use, can be combined in various ways, and has a compact structure, which can make the flying needle machine miniaturized and diversified.

Description

Horizontal flying needle machine using linear motor

Technical Field

The invention relates to the field of PCB (printed circuit board) test equipment, in particular to a horizontal flying probe machine using a linear motor.

Background

Due to the fact that requirements for the PCB are higher and higher along with the development of the technology level, and the PCB is larger and larger, the detection accuracy and reliability of the PCB are required to be higher and higher. Most of the existing plane flying needle equipment uses a screw rod guide rail combination mode as main power, and the shaft can be deflected due to uneven driving force of a mechanical part, so that the overall precision is reduced.

The PCB detected by the flying probe detection machine is larger and larger, the test platform is also larger and larger, and the precision of the screw rod cannot be guaranteed. This may result in the tester not being able to measure boards with high precision.

Disclosure of Invention

In order to solve the problems, the invention provides a flying probe machine which is compact in structure and high in precision.

In order to achieve the purpose, the invention provides the technical scheme that: a horizontal flying-needle machine using a linear motor, comprising: the testing device comprises a base, wherein a testing platform is arranged on the base, a first linear guide rail and a second linear guide rail are arranged on the testing platform in parallel, a first linear driver and a second linear driver are erected between the first linear guide rail and the second linear guide rail, and a first testing head and a second testing head are respectively arranged on the first linear driver and the second linear driver; the first linear driver is connected with the first linear motor and the second linear motor; and the second linear driver is connected with the first linear motor and the second linear motor.

Preferably, the first linear actuator and the second linear actuator are perpendicular to the first linear guide and the second linear guide.

Preferably, the first linear motor includes a first linear motor stator and two first linear motor movers, and the first linear driver and the second linear driver are respectively connected to one of the first linear motor movers.

As a preferred technical solution, the second linear motor includes a second linear motor stator and two second linear motor movers, and the first linear driver and the second linear driver are respectively connected to one of the second linear motor movers.

As a preferred technical solution, the first linear actuator includes a first lead screw, a first nut is connected to the first lead screw, and the first test head is connected to the first nut.

As a preferable technical solution, the second linear actuator includes a second lead screw, a second nut is connected to the second lead screw, and the second test head is connected to the second nut.

As an optimized technical scheme, a sucker testing platform is arranged on the testing platform and used for adsorbing the PCB.

Preferably, the test platform is made of marble.

Compared with the prior art, the invention has the beneficial effects that: the horizontal flying needle machine adopts a driving mode of a linear motor double rotor, and can solve the problems of deviation, single-side abrasion and poor precision caused by single-side arrangement of a screw rod. The position of the linear motor is determined by the grating ruler, so that the precision is higher; the linear motor is flexible to use, can be combined in various ways, has compact structure, and can make the flying probe machine miniaturized and diversified; after the flying needle machine adopts the driving mode of the linear motor, the flying needle machine has higher operation efficiency, lower noise and lower failure rate.

Drawings

FIG. 1 is an overall block diagram of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.

Referring to fig. 1 and 2, the present embodiment provides a horizontal flying probe machine using a linear motor, including: a base 10, a testing platform 20 is arranged on the base 10, in this embodiment, the testing platform 20 is made of marble. The test platform 20 is provided with a sucker test platform 201, and the sucker test platform 201 is used for adsorbing a PCB circuit board, so that the circuit board is prevented from displacement when the machine moves at a high speed, and the relative precision is ensured.

The testing platform 20 is provided with a first linear guide rail 30 and a second linear guide rail 40 in parallel, a first linear driver 50 and a second linear driver 60 are spanned between the first linear guide rail 30 and the second linear guide rail 40, and the first linear driver 50 and the second linear driver 60 are perpendicular to the first linear guide rail 30 and the second linear guide rail 40. The first linear driver 50 and the second linear driver 60 are respectively provided with a first test head 701 and a second test head 702;

further, the first linear driver 50 is connected to the first linear motor 80 and the second linear motor 90; the second linear driver 60 is also connected to the first linear motor 80 and the second linear motor 90, specifically, the first linear motor 80 includes a first linear motor stator 801 and two first linear motor rotors 802, and the first linear driver 50 and the second linear driver 60 are respectively connected to one of the first linear motor rotors 802; similarly, the second linear motor 90 includes a second linear motor stator 901 and two second linear motor movers 902, and the first linear driver 50 and the second linear driver 60 are respectively connected to one of the second linear motor movers 902.

Further, the first linear driver 50 includes a first lead screw 501, a first nut 502 is connected to the first lead screw 501, and the first test head 701 is connected to the first nut 502; similarly, the second linear actuator 60 includes a second lead screw 601, a second nut 602 is connected to the second lead screw 601, and the second test head 702 is connected to the second nut 602.

The main shaft of the horizontal flying-needle machine is driven by a linear motor, and the problems of uneven stress and deflection of a screw rod can be solved by adopting double-rotor driving. In addition, the position of the linear motor is fed back by the grating ruler to be the real-time position. Linear motor and linear guide install on the test platform 20 that the marble was made, and the Y axle adopts high accuracy linear actuator to drive the test head and carries out Y direction and remove. The linear motor, the linear driver and the flying probe testing head form an x/y/z triaxial form. The sucker test platform 201 can adsorb a PCB (printed circuit board), so that the circuit board cannot be displaced when the machine moves at a high speed, and the relative precision is ensured.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A horizontal flying needle machine using a linear motor, characterized in that, comprising: a base, a test platform is provided on the base, and a first linear guide rail and a second linear guide rail are arranged in parallel on the test platform , a first linear driver and a second linear driver are set up between the first linear guide rail and the second linear guide rail, and a first test head and a second linear driver are respectively installed on the first linear driver and the second linear driver. Two test heads; the first linear driver is connected with the first linear motor and the second linear motor; the second linear driver is connected with the first linear motor and the second linear motor.

2 . The horizontal flying needle machine according to claim 1 , wherein the first linear driver and the second linear driver are perpendicular to the first linear guide rail and the second linear guide rail. 3 .

3 . The horizontal flying needle machine according to claim 1 , wherein the first linear motor comprises a first linear motor stator and two first linear motor movers, and the first linear driver and the second linear driver are respectively connected to one of the first linear motor movers.

4. The horizontal flying needle machine according to claim 1, wherein the second linear motor comprises a second linear motor stator and two second linear motor movers, the first linear driver and the second linear motor The linear drives are respectively connected to one of the second linear motor movers.

5 . The horizontal flying needle machine according to claim 1 , wherein the first linear driver comprises a first screw rod, the first screw rod is connected with a first nut, and the first test head connected with the first nut.

6 . The horizontal flying needle machine according to claim 1 , wherein the second linear driver comprises a second screw rod, the second screw rod is connected with a second nut, and the second test head is connected to the second screw rod. 7 . The second nut is connected.

7 . The horizontal flying probe machine according to claim 1 , wherein a suction cup test platform is provided on the test platform, and the suction cup test platform is used for adsorbing a PCB circuit board. 8 .

8. The horizontal flying probe machine according to claim 1, wherein the test platform is made of marble.