WO2019024609A1 - Pcb阻抗自动测试机及其线性模组与安装基座一体结构 - Google Patents

Pcb阻抗自动测试机及其线性模组与安装基座一体结构 Download PDF

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Publication number
WO2019024609A1
WO2019024609A1 PCT/CN2018/090920 CN2018090920W WO2019024609A1 WO 2019024609 A1 WO2019024609 A1 WO 2019024609A1 CN 2018090920 W CN2018090920 W CN 2018090920W WO 2019024609 A1 WO2019024609 A1 WO 2019024609A1
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Prior art keywords
mounting base
linear module
integrated structure
bottom plate
structure according
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PCT/CN2018/090920
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English (en)
French (fr)
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杨海东
成斌
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南京协辰电子科技有限公司
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Publication of WO2019024609A1 publication Critical patent/WO2019024609A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters

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  • the invention relates to the technical field of testing machines, in particular to a PCB impedance automatic testing machine and a linear module and a mounting base integrated structure.
  • the transmission parts are motor-driven single-axis modules to realize the action mode
  • the pedestal is the base for the transmission and drive part installation.
  • the flat structure is such that a single-axis module is mounted on the flat plate to achieve single-axis driving.
  • the pedestal has higher requirements on precision, which makes the susceptibility of the pedestal difficult, and is easily deformed after the process is heated and used in the later stage; in addition, since the lower surface of the uniaxial module is in contact with the upper surface of the pedestal, The accuracy of the pedestal is limited by the accuracy of the module, and the accuracy of the single-axis module is difficult to improve except for the high cost.
  • the Chinese patent document CN204179920U discloses a linear motor module comprising: a base, a side plate, a linear motor, a carrier plate, a guide rail and a collision preventing block, the base comprising a bottom plate and a boss disposed on the bottom plate, the boss The top of the top is provided with a rail mounting groove in which the rail is disposed, and the carrier is mounted on the rail. The user can mount the load directly on the carrier and the linear motor provides power to move along the rail.
  • the prior art adopts a conventional linear motor module, which has a complicated structure, is difficult to process, and has high cost.
  • the prior art linear motor module is fixed on the bottom plate during actual use. In order to ensure the accuracy of the whole machine, the contact surface of the bottom plate and the linear motor module must be finished, which leads to finishing. If the area is too large, more heat is generated during the cutting process, causing stress deformation.
  • the technical problem to be solved by the present invention is to overcome the defects of the prior art linear module and the mounting base, which are complicated in structure, difficult in processing, and high in cost, thereby providing a linear structure with simple structure, easy processing, and low cost.
  • the module is integrated with the mounting base.
  • Another technical problem to be solved by the present invention is that the existing linear module and the bottom plate of the mounting base have a large finishing area, and heat generation is liable to cause stress deformation during the cutting process, thereby providing a small finishing area of the bottom plate.
  • the linear module and the mounting base are integrated to reduce stress deformation caused by cutting heat.
  • the present invention provides a linear module and a mounting base integrated structure, including:
  • a U-shaped mounting base comprising a bottom plate and side plates disposed along two edges of the length of the bottom plate;
  • a linear module comprising a driving structure directly mounted on the U-shaped mounting base and two sliding rails, the two sliding rails being disposed on top surfaces of the two side panels; the linear module further comprising A slider that reciprocates linearly on the slide rail by the drive structure.
  • the linear module is integrally formed with the mounting base, and the top surface of the side plate is a finishing surface.
  • the linear module is integrated with the mounting base, and the driving structure comprises:
  • a screw rod disposed between the two side plates and extending along a length direction of the U-shaped mounting base, the screw rod being driven to rotate by the motor, and two ends of the screw rod are respectively mounted with the a connector for fixing the lead screw to the bottom plate;
  • the driving block is disposed on the screw rod and linearly reciprocates along the screw rod under the rotational driving of the screw rod, and the driving block is fixedly disposed with the sliding member.
  • the linear module is integrally formed with the mounting base, and the bottom plate is provided with a boss at a position corresponding to the connecting seat, and the connecting seat is fixedly mounted on the boss.
  • the linear module is integrally formed with the mounting base, and the top surface of the boss is a finishing surface.
  • the linear module is integrated with the mounting base, the sliding member is a slider, and the two sides of the sliding block are provided with arms extending toward the corresponding sliding rails, and the bottom surface of the supporting arm is provided with a corresponding The sliding groove of the slide rail.
  • the linear module is integrally formed with the mounting base, and the bottom plate is further formed with a plurality of holes, and the plurality of holes are distributed along the length direction of the bottom plate.
  • the linear module is integrally formed with the mounting base, and the connecting seat is formed with a mounting hole for mounting the screw rod, and two ends of the screw rod are respectively disposed in the two mounting holes, and Rotating in the mounting hole can be driven by the motor.
  • the invention also provides an automatic tester for PCB impedance, comprising:
  • test machine body having at least one mechanical arm
  • the at least one mechanical arm is fixed on the sliding member.
  • the linear module provided by the present invention is integrated with a mounting base.
  • the U-shaped mounting base comprises a bottom plate and side plates disposed along two edges of the length of the bottom plate, and two slide rails of the linear module are disposed in two The top surface of the side plate, the slider is driven to reciprocally linearly move on the slide rail by the driving structure.
  • the whole device is simple in structure, easy to process, and low in cost; and the two side plates strengthen the bottom plate, increase the bending resistance of the mounting base, improve the load capacity, and effectively prevent the installation base from being heated during the processing. The stress deformation improves the machining accuracy.
  • the linear module of the present invention is integrally formed with a mounting base, and the bottom plate is provided with a boss at a position corresponding to the connecting seat, the connecting seat is fixedly mounted on the boss; The top surface is the finished surface.
  • the screw rod is fixed to the bottom plate only by the two connecting seats and the two bosses, which effectively reduces the area of the base finishing, reduces the processing difficulty, and reduces the stress deformation caused by the cutting heat.
  • the linear module and the mounting base provided by the invention have an integrated structure, and a plurality of holes are formed on the bottom plate, and a plurality of holes are distributed along the length direction of the bottom plate. It can not only reduce the quality of the mounting base, but also release the internal stress generated by the mounting base during the processing and later use through the hole.
  • the PCB impedance automatic testing machine provided by the invention has the slide rail, the screw rod, the motor, the driving block and the sliding member all detachably connected with the U-shaped mounting base, and can be assembled at the test site, thereby effectively avoiding during transportation.
  • the damage caused by its accuracy improves the accuracy of the whole machine.
  • the motor is located between the pair of slide rails, no torque is generated, and the load capacity is improved.
  • FIG. 1 is a schematic view showing an integrated structure of a linear module and a mounting base provided by the present invention
  • FIG 2 is a schematic view of the mounting base shown in Figure 1;
  • FIG. 3 is a top view of the integrated structure of the linear module and the mounting base provided by the present invention.
  • 1-U-shaped mounting base 2-drive structure; 3-slide rail; 4-slider; 5-connector; 11-baseplate; 12-side panel; 21-motor; 22-screw; ; 41 - groove; 42 - arm; 51 - mounting hole; 111 - boss; 112 - hole; 421 - chute.
  • FIGS. 1-3 A specific embodiment of the linear module and the mounting base integrated structure as shown in FIGS. 1-3, comprising a U-shaped mounting base 1 including a bottom plate 11 and two edges along the length direction of the bottom plate 11 Side panel 12.
  • the side plates 12 are disposed perpendicular to the bottom plate 11, and the bottom plate 11 and the two side plates 12 can be integrally formed, and the installation space between the two side plates 12 is other components.
  • a linear module comprising a driving structure 2 directly mounted on the U-shaped mounting base 1 and two sliding rails 3, the two sliding rails 3 being disposed on top surfaces of the two side panels 12;
  • the linear module also includes a slider 4 that is driven to reciprocate linearly on the slide rail 3 by the drive structure 2.
  • the top surface of the side plate 12 and the bottom surface of the sliding rail 3 are a pair of matching finishing surfaces, and the elongated contact surface needs to be finished with respect to the top surface of the bottom plate 11, which significantly reduces the finishing.
  • the area is reduced by stress deformation caused by cutting heat.
  • the slide rails 3 can be fixed to the side plates 12 by fasteners such as screws, or can be fixed by means of a card slot fit.
  • the driving structure 2 includes: a motor 21 disposed at one end of the U-shaped mounting base 1 , the motor 21 is located in an installation space between the two side plates 12; and is disposed between the two side plates 12 and along the side A screw 22 extending in the longitudinal direction of the U-shaped mounting base 1 is connected, and one end of the screw 22 is connected to an output shaft of the motor 21, and the screw 22 is rotated by the motor 21 to rotate the motor 21.
  • the movement is converted into a linear motion along the axial direction thereof, and two ends of the screw rod 22 are respectively mounted with a connecting seat 5 for fixing the screw rod 22 and the bottom plate 11, and the connecting seat 5 is a convex type fixing block.
  • the driving block 23 is a screw nut that is sleeved on the screw rod 22, and the driving block 23 is fixedly disposed with the sliding member 4.
  • the lower end of the sliding member 4 is formed with a groove 41 matching the size of the driving block 23, and the driving block 23 is fixed in the groove 41.
  • the bottom plate 11 is provided with a boss 111 at a position corresponding to the connecting seat 5, and the connecting seat 5 is fixedly mounted on the boss 111 by a fixing member or an adhesive.
  • the boss 111 is formed such that the corresponding portion of the bottom plate 11 is upwardly convex, that is, the height of the portion is cut higher than the other portions during the cutting process.
  • the top surface of the boss 111 is a finishing surface.
  • the slider 4 is a slider, and both sides of the slider are provided with an arm 42 extending toward the corresponding slide rail 3, that is, the longitudinal section of the slider is a concave shape with an opening facing downward, the arm
  • the bottom surface of the 42 is provided with a sliding groove 421 that cooperates with the corresponding sliding rail 3.
  • the chute 421 is in a mating engagement with the slide rail 3, and the slider reciprocates on the slide rail 3 under the driving of the motor 21 and the driving block 23.
  • a plurality of holes 112 are also formed in the bottom plate 11, and the plurality of holes 112 are distributed along the length direction of the bottom plate 11. In the present embodiment, a plurality of holes 112 are located between the two bosses 111 at equal intervals.
  • a mounting hole 51 for mounting the screw rod 22 is formed on the connecting base 5, and the mounting hole 51 is opened in the axial direction of the screw rod 22 and disposed at the center of the connecting base 5; It is placed in the two mounting holes 51 and is rotatable in the mounting hole 51 by the driving of the motor 21.
  • the size of the mounting hole 51 is slightly larger than the diameter of the lead screw 22, ensuring that the screw shaft 22 can be rotated inside without falling off.
  • a PCB impedance automatic testing machine includes: a testing machine body having at least one mechanical arm; the linear module and the mounting base being integrally formed; wherein the at least one mechanical arm is fixed on the sliding member 4. Under the driving of the motor 21, the sliding member 4 performs a reciprocating linear motion on the sliding rail 3, thereby driving the mechanical arm to move accordingly, and performing corresponding tests.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Linear Motors (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

一种线性模组与安装基座一体结构，包括：U形安装基座(1)，包括底板(11)及沿底板(11)长度方向的两个边缘设置的侧板(12)；线性模组，包括直接安装在U形安装基座(1)上的驱动结构(2)和两个滑轨(3)，两个滑轨(3)设置在两个侧板(12)的顶面；线性模组还包括受所述驱动结构(2)驱动在滑轨(3)上往复直线移动的滑动件(4)。该结构简单，易于加工，成本低，底板精加工面积小，降低切削发热引起的应力变形。

Description

PCB阻抗自动测试机及其线性模组与安装基座一体结构 技术领域
本发明涉及测试机技术领域，具体涉及一种PCB阻抗自动测试机及其线性模组与安装基座一体结构。
背景技术
目前市场上大部分PCB阻抗测试产品的基座为钢件拼接或铸铁件，传动部件为电机驱动单轴模组实现动作方式，基座为传动及驱动部分安装用的基座，该基座为平板结构，在平板上安装单轴模组，以实现单轴驱动。而基座对精度的要求较高，造成基座的加工难度较大，在加工受热后和后期使用过程中容易变形；另外，由于单轴模组的下表面与基座的上表面接触设置，使得基座精度受模组精度限制，而单轴模组除了成本较高外，其精度很难提高。
例如，中国专利文献CN204179920U公开了一种直线电机模组，包括：基座、侧板、直线电机、载盘、导轨和防撞块，基座包括底板及设置在底板上的凸台，凸台的顶部设置有导轨安装槽，导轨设置在该导轨安装槽中，载盘安装在导轨上。用户可以将负载直接安装在载盘上，由直线电机提供动力沿着导轨方向移动。该现有技术采用了传统的直线电机模组，结构复杂，加工难度大，成本较高。另外，该现有技术的直线电机模组在实际使用过程中要固定在底板上，为了保证整机的精度，底板和直线电机模组的 接触面必须进行精加工，这样就会导致精加工的面积过大，在切削过程中产生较多的热量，使其产生应力变形。
发明内容
因此，本发明要解决的技术问题在于克服现有技术中的线性模组与安装基座的结构复杂，加工难度大，成本高的缺陷，从而提供一种结构简单，易于加工，成本低的线性模组与安装基座一体结构。
本发明要解决的另一个技术问题是现有的线性模组与安装基座的底板的精加工面积较大，在切削过程中发热易引起应力变形，从而提供一种底板精加工面积小，尽量降低切削发热引起的应力变形的线性模组与安装基座一体结构。
为了解决上述技术问题，本发明提供了一种线性模组与安装基座一体结构，包括：
U形安装基座，包括底板及沿所述底板长度方向的两个边缘设置的侧板；
线性模组，包括直接安装在所述U形安装基座上的驱动结构和两个滑轨，所述两个滑轨设置在两个所述侧板的顶面；所述线性模组还包括受所述驱动结构驱动在所述滑轨上往复直线移动的滑动件。
所述的线性模组与安装基座一体结构，所述侧板的顶面为精加工面。
所述的线性模组与安装基座一体结构，所述驱动结构包括：
电机，设置在所述U形安装基座一端；
丝杆，设置于两所述侧板之间且沿所述U形安装基座长度方向延伸，所述丝杆受所述电机驱动而旋转，所述丝杆的两端分别安装有一将所述丝杆与所述底板进行固定的连接座；以及
驱动块，设置在所述丝杆上并在所述丝杆旋转驱动下沿所述丝杆往复直线移动，所述驱动块与所述滑动件固定设置。
所述的线性模组与安装基座一体结构，所述底板在与所述连接座对应位置设置有凸台，所述连接座固定安装在所述凸台上。
所述的线性模组与安装基座一体结构，所述凸台的顶面为精加工面。
所述的线性模组与安装基座一体结构，所述滑动件为滑块，所述滑块的两侧设有朝向对应滑轨延伸的支臂，所述支臂的底面设有与对应所述滑轨配合的滑槽。
所述的线性模组与安装基座一体结构，所述底板上还成型有若干个孔，所述若干个孔沿所述底板的长度方向分布。
所述的线性模组与安装基座一体结构，所述连接座上成型有一用于安装所述丝杆的安装孔，所述丝杆的两端分别置于两个所述安装孔中，并可在所述电机的驱动下在所述安装孔中转动。
本发明还提供了一种PCB阻抗自动测试机，包括：
测试机本体，具有至少一个机械臂；
上述的线性模组与安装基座一体结构；
其中，所述至少一个机械臂固定在所述滑动件上。
本发明技术方案，具有如下优点：
1.本发明提供的线性模组与安装基座一体结构，U形安装基座包括底板及沿所述底板长度方向的两个边缘设置的侧板，线性模组的两个滑轨设置在两个所述侧板的顶面，滑动件受所述驱动结构驱动在所述滑轨上往复直线移动。整个装置结构简单，易于加工，成本低；且两个侧板对底板起到加强作用，增加了安装基座的抗弯性能，提高了负载能力，在加工过程中可以有效防止安装基座受热发生的应力变形，提高了加工精度。
2.本发明提供的线性模组与安装基座一体结构，所述底板在与所述连接座对应位置设置有凸台，所述连接座固定安装在所述凸台上；所述凸台的顶面为精加工面。这样丝杆仅通过两个连接座和两个凸台就实现了与底板的固定，有效减少了底座精加工的面积，降低了加工难度，同时减少了因切削发热引起的应力形变。
3.本发明提供的线性模组与安装基座一体结构，底板上还成型有若干个孔，若干个孔沿底板的长度方向分布。既能减轻安装基座的质量，又能使安装基座在加工过程和后期使用过程中产生的内应力通过孔释放。
4.本发明提供的PCB阻抗自动测试机，滑轨、丝杆、电机、驱动块和滑动件均与U形安装基座可拆卸连接，可以在测试现场进行组装，有效避免了在运输过程中对其精度造成的损害，提高了整机的精度。且电机位于一对滑轨之间，不会产生扭矩，负载能力得到提高。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的提供的线性模组与安装基座一体结构的示意图；
图2为图1所示的安装基座的示意图；
图3为本发明提供的线性模组与安装基座一体结构的俯视图。
附图标记说明：
1-U形安装基座；2-驱动结构；3-滑轨；4-滑动件；5-连接座；11-底板；12-侧板；21-电机；22-丝杆；23-驱动块；41-凹槽；42-支臂；51-安装孔；111-凸台；112-孔；421-滑槽。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
如图1-3中所示的线性模组与安装基座一体结构的一种具体实施方式，包括U形安装基座1，包括底板11及沿所述底板11长度方向的两个边缘设置的侧板12。侧板12垂直于底板11设置，底板11和两个侧板12可以一体加工成型，两个侧板12之间为其他组件的安装空间。线性模组，包括直接安装在所述U形安装基座1上的驱动结构2和两个滑轨3，所述两个滑轨3设置在两个所述侧板12的顶面；所述线性模组还包括受所述驱动结构2驱动在所述滑轨3上往复直线移动的滑动件4。
所述侧板12的顶面与所述滑轨3的底面为一对相配合的精加工面，长条形的接触面相对于底板11的顶面全部需要进行精加工，明显减小了精加工的面积，减少了因切削发热引起的应力形变。滑轨3可以通过螺钉等紧固件与侧板12固定，也可以通过卡槽配合的方式实现固定。
所述驱动结构2包括：设置在所述U形安装基座1一端的电机21，电 机21位于两个侧板12之间的安装空间中；设置于两所述侧板12之间且沿所述U形安装基座1长度方向延伸的丝杆22，丝杆22的一端与所述电机21的输出轴连接，所述丝杆22受所述电机21驱动而旋转，并将电机21的旋转运动转化为沿其轴向的直线运动，所述丝杆22的两端分别安装有一将所述丝杆22与所述底板11进行固定的连接座5，连接座5为凸字型的固定块；以及设置在所述丝杆22上并在所述丝杆22旋转驱动下沿所述丝杆22往复直线移动的驱动块23。在本实施例中，所述驱动块23为套设在所述丝杆22上的丝杆螺母，所述驱动块23与所述滑动件4固定设置。具体为，所述滑动件4的下端成型有一与所述驱动块23大小相配的凹槽41，驱动块23固定在所述凹槽41中。
所述底板11在与所述连接座5对应位置设置有凸台111，所述连接座5通过固定件或粘合剂固定安装在所述凸台111上。凸台111为底板11的相应部分向上凸起形成，即在切削加工时该部分切削的高度高于其他部分。所述凸台111的顶面为精加工面。
所述滑动件4为滑块，所述滑块的两侧设有朝向对应滑轨3延伸的支臂42，即所述滑块的纵截面为开口朝下的凹字型，所述支臂42的底面设有与对应所述滑轨3配合的滑槽421。滑槽421与滑轨3形成插接配合，在电机21的驱动和驱动块23的带动下，滑块在滑轨3上往复移动。
所述底板11上还成型有若干个孔112，所述若干个孔112沿所述底板11的长度方向分布。在本实施例中，若干个孔112位于两个凸台111之间，等间距设置。
所述连接座5上成型有一用于安装所述丝杆22的安装孔51，安装孔51沿丝杆22的轴向开设，设置在连接座5的中央；所述丝杆22的两端分别置于两个所述安装孔51中，并可在所述电机21的驱动下在所述安装孔51中转动。安装孔51的大小略大于丝杆22的直径，保证丝杆22既可以在其内部转动，又不会脱落。
一种PCB阻抗自动测试机，包括：测试机本体，具有至少一个机械臂；上述的线性模组与安装基座一体结构；其中，所述至少一个机械臂固定在所述滑动件4上。在电机21驱动下，滑动件4在滑轨3上做往复直线运动，从而带动机械臂随之运动，进行相应的测试。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。

Claims (9)

  1. 一种线性模组与安装基座一体结构，其特征在于，包括：
    U形安装基座(1)，包括底板(11)及沿所述底板(11)长度方向的两个边缘设置的侧板(12)；
    线性模组，包括直接安装在所述U形安装基座(1)上的驱动结构(2)和两个滑轨(3)，所述两个滑轨(3)设置在两个所述侧板(12)的顶面；所述线性模组还包括受所述驱动结构(2)驱动在所述滑轨(3)上往复直线移动的滑动件(4)。
  2. 根据权利要求1所述的线性模组与安装基座一体结构，其特征在于，所述侧板(12)的顶面为精加工面。
  3. 根据权利要求1或2所述的线性模组与安装基座一体结构，其特征在于，所述驱动结构(2)包括：
    电机(21)，设置在所述U形安装基座(1)一端；
    丝杆(22)，设置于两所述侧板(12)之间且沿所述U形安装基座(1)长度方向延伸，所述丝杆(22)受所述电机(21)驱动而旋转，所述丝杆(22)的两端分别安装有一将所述丝杆(22)与所述底板(11)进行固定的连接座(5)；以及
    驱动块(23)，设置在所述丝杆(22)上并在所述丝杆(22)旋转驱动下沿所述丝杆(22)往复直线移动，所述驱动块(23)与所述滑动件(4)固定设置。
  4. 根据权利要求3所述的线性模组与安装基座一体结构，其特征在于，所述底板(11)在与所述连接座(5)对应位置设置有凸台(111)，所述连接座(5)固定安装在所述凸台(111)上。
  5. 根据权利要求4所述的线性模组与安装基座一体结构，其特征在于，所述凸台(111)的顶面为精加工面。
  6. 根据权利要求1-5中任一项所述的线性模组与安装基座一体结构，其特征在于，所述滑动件(4)为滑块，所述滑块的两侧设有朝向对应滑轨(3)延伸的支臂(42)，所述支臂(42)的底面设有与对应所述滑轨(3)配合的滑槽(421)。
  7. 根据权利要求1-6中任一项所述的线性模组与安装基座一体结构，其特征在于，所述底板(11)上还成型有若干个孔(112)，所述若干个孔(112)沿所述底板(11)的长度方向分布。
  8. 根据权利要求3-5中任一项所述的线性模组与安装基座一体结构，其特征在于，所述连接座(5)上成型有一用于安装所述丝杆(22)的安装孔(51)，所述丝杆(22)的两端分别置于两个所述安装孔(51)中，并可在所述电机(21)的驱动下在所述安装孔(51)中转动。
  9. 一种PCB阻抗自动测试机，其特征在于，包括：
    测试机本体，具有至少一个机械臂；
    权利要求1-8中任一项所述的线性模组与安装基座一体结构；
    其中，所述至少一个机械臂固定在所述滑动件(4)上。
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