阅读说明：本技术 触头寿命试验装置 (Contact life test device ) 是由 韩丽娟 李亚磊 李宝增 袁端鹏 �田�浩 王亚祥 林生军 李凯 庞亚娟 于 2018-07-20 设计创作，主要内容包括：本发明涉及一种触头寿命试验装置。其包括插床,所述插床的滑枕上可拆连接有用于对被试触头进行插拔试验的插拔件,所述插床的工作台上可拆连接有用于定位被试触头的触头定位工装,所述触头定位工装包括用于与被试触头的内螺纹适配的螺纹连接部分和用于与插床的卡紧工具卡紧配合的基础部分,所述插拔件具有用于与被试触头上端内部的凸出结构的内周面适配的外周面。这样一来,可以利用到现有的插床对触头的机械寿命进行试验,提高了插床的利用率,通过插床的工作台上的卡紧工具将触头定位工装卡紧,通过滑枕的上下往复运动实现插拔件在触头内的插拔,完成触头寿命的试验,且利用现有的插床进行试验,使得触头寿命检测的效率高,成本低。(The invention relates to a contact life test device, which comprises a slotting machine, wherein a ram of the slotting machine is detachably connected with a plug-in part for performing a plug-in test on a tested contact, a workbench of the slotting machine is detachably connected with a contact positioning tool for positioning the tested contact, the contact positioning tool comprises a threaded connection part adapted to an internal thread of the tested contact and a base part for clamping and matching with a clamping tool of the slotting machine, and the plug-in part is provided with an outer peripheral surface adapted to an inner peripheral surface of a convex structure at the upper end of the tested contact.)

1. Contact life test device, its characterized in that: including the slotting machine, releasable connection has the plug spare that is used for carrying out the plug test to the contact of being examined on the ram of slotting machine, releasable connection has the contact location frock that is used for fixing a position the contact of being examined on the workstation of slotting machine, contact location frock including be used for with the threaded connection part of the internal thread adaptation of contact of being examined and be used for with the chucking instrument chucking complex basic part of slotting machine, the plug spare have be used for with the outer peripheral face of the inner peripheral surface adaptation of the inside bulge structure in contact upper end of being examined.

2. The contact life test device according to claim 1, characterized in that: the plug-pull piece is a cylinder, and a threaded hole used for being connected with a sliding rod in the ram is formed in the axis of the cylinder.

3. The contact life test device according to claim 2, characterized in that: the threaded hole is a through hole, and the contact life test device further comprises a limiting nut which is used for being connected to the bottom of the sliding rod to limit the position of the plug piece.

4. The contact life test device according to claim 1, characterized in that: the contact positioning tool is of a cylindrical structure.

5. The contact life testing apparatus of any one of claims 1-4, wherein the slotting machine is a numerically controlled slotting machine.

Technical Field

The invention relates to an contact life test device.

Background

The contact is an important element for bearing the connection and disconnection of current in a high-voltage closed combined electrical appliance, and common contact structures are integrated, and are partially of split structures (similar to petal structures, the number of petals is even ), a protruding structure is arranged in the upper end, the surface of the protruding structure is plated with silver, and an internal thread structure is arranged in the lower end.

In order to verify whether a product can meet all requirements of technical specifications, a type test is required, wherein a service life test in the type test is tests which need to be carried out and is used for testing whether a contact part can bear specified opening and closing no-load operation times under specified mechanical characteristic conditions.

The slotting machine is idle at some time, so that the utilization rate of the processing equipment is low to a certain extent of , and the processing equipment is wasted.

Disclosure of Invention

The invention aims to provide contact life testing devices capable of detecting the mechanical life of a contact by using the existing slotting machine in a production workshop, so as to solve the problems of low detection efficiency and high cost when the contact life is detected in the prior art.

In order to achieve the purpose, the technical scheme of the contact life test device is as follows:

contact life test device includes the slotting machine, releasable connection has the plug piece that is used for carrying out the plug test to the contact of being examined on the ram of slotting machine, releasable connection has the contact location frock that is used for fixing a position the contact of being examined on the workstation of slotting machine, contact location frock is including being used for with the threaded connection part of the internal thread adaptation of contact of being examined and being used for with the chucking instrument chucking complex basic unit of slotting machine, the plug piece has the outer peripheral face that is used for with the inner peripheral surface adaptation of the protruding structure of contact upper end inside of being examined comes like this, can utilize current slotting machine to test the mechanical life of contact, has improved the utilization ratio of slotting machine, and the chucking instrument on the workstation through the slotting machine is with contact location frock chucking, realizes the plug of plug piece in the contact through the up-and-down reciprocating motion of ram, accomplishes the test of contact life, and utilizes current slotting machine to test for the efficiency of contact life detection is high, and is with low costs.

, the plug-pull piece is a cylinder, and the axis of the cylinder is provided with a threaded hole for connecting with the slide bar in the ram, because the threaded connection is convenient for installation, disassembly and replacement, the assembly is simple and time-saving, the test period is shortened, and the rapid detection of the mechanical life of the contact is realized.

, the threaded hole is a through hole, and the contact life test device further comprises a limit nut connected to the bottom of the sliding rod to limit the position of the plug piece, so that effectively prevents the plug piece from falling off and influences the life detection of the contact.

, the contact positioning tool is cylindrical, so that the diameters of the threaded connection part and the base part of the contact positioning tool are , and the contact positioning tool is simple in structure, easy to machine and low in production cost.

And , the slotting machine is a numerical control slotting machine, so that parameters such as the distance between the plugging member and the contact to be tested, the relative distance of the plugging member moving up and down in the vertical direction, the plugging times, the speed and the like can be set and adjusted, thereby realizing the life detection simulation test of the contact and truly restoring the mechanical life test effect of the contact parts on the product.

Drawings

FIG. 1 is a schematic view of a structure of a contact under test;

FIG. 2 is a schematic structural diagram of a slotting machine of the contact life testing device of the invention;

FIG. 3 is a schematic structural diagram of a plug member of the contact life testing apparatus of the present invention;

FIG. 4 is a cross-sectional view taken along section line A-A of FIG. 3;

FIG. 5 is a schematic structural diagram of a contact positioning tool of the contact life testing device of the present invention;

FIG. 6 is a top view of the contact positioning tooling shown in FIG. 5;

FIG. 7 is a schematic diagram of the insertion/extraction member being pulled out of the contact when the contact life testing apparatus of the present invention detects the life of the contact;

fig. 8 is a schematic diagram illustrating the insertion of the plug into the contact when the contact life testing device of the present invention detects the life of the contact.

Description of reference numerals: 1. a tested contact; 101. a protruding structure; 102. an internal thread; 2. slotting a bed; 201. a ram; 202. a slide bar; 203. a three-jaw chuck; 204. a circular table; 3. a plug-in member; 301. a threaded hole; 4. a contact positioning tool; 401. a threaded connection portion; 402. a base portion; 5. and a limiting nut.

Detailed Description

Reference will now be made to an embodiment of the present invention, wherein in the description of the present invention, if terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is for convenience of description only, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered as limiting.

In order to clearly express the working process of the contact life testing device of the present invention, the structure of the contact 1 to be tested is first described, the structure of the contact 1 to be tested is shown in fig. 1, the upper end of the contact 1 to be tested adopts a petal-shaped structure, the inner part of the contact 1 to be tested is provided with a convex structure 101, the surface of the convex structure 101 is subjected to silver plating, and the lower end of the contact 1 to be tested is provided with an internal thread 102.

As shown in fig. 2 to 8, the contact life test device of the present invention includes a contact positioning tool 4 for fixing the tested contact 1 and a plug 3 for plugging in and out of the tested contact 1 to complete a plugging test on the tested contact 1, and the plug 3 can be plugged in and out of the tested contact 1 under the driving of the lifting device. The contact life test device further comprises a slotting machine 2, the slotting machine 2 comprises a ram 201, a sliding rod 202 is arranged in the ram 201, the lifting device is formed by the sliding rod 202, the plugging piece 3 is connected to the sliding rod 202 and can move in the up-down direction along with the sliding rod 202, the slotting machine 2 further comprises a circular workbench 204 arranged below the ram 201, a three-jaw chuck 203 is arranged on the circular workbench 204, and the three-jaw chuck 203 is used for clamping a contact positioning tool 4.

The plug-pull piece 3 is a cylinder, a threaded hole 301 used for being connected with the sliding rod 202 is formed in the axis of the plug-pull piece 3, the threaded hole 301 penetrates through the plug-pull piece 3 in the axial direction, the peripheral surface of the threaded hole is matched with the protruding structure 101 in the upper end of the tested contact 1, the outer diameter of the plug-pull piece 3 is the same as the caliber of the tested contact 1, and therefore the working state of the tested contact 1 can be simulated when the plug-pull piece 3 is inserted into the tested contact 1.

The contact positioning tool 4 is a cylinder, the upper end of the contact positioning tool 4 is provided with a threaded connection part 401 for mounting the tested contact 1, the lower end of the contact positioning tool is provided with a base part 402 for clamping the three-jaw chuck 203, and the outer diameter of the outer thread 401 in the embodiment is equal to the diameter of the circumferential surface, so that the contact positioning tool 4 can be conveniently machined, and the machining cost of the contact positioning tool 4 is reduced.

In order to control and record test parameters conveniently, the contact life test device further comprises a program controller, the slotting machine 2 is a numerical control slotting machine, the program controller and the program controller on the slotting machine 2 are the same device, and parameters such as the plugging height, the plugging speed and the plugging times in the contact life detection test are controlled by controlling parameters such as the movement distance, the movement speed and the movement speed of the sliding rod 202 in the vertical direction through the program controller.

When the contact life test device is used for testing the life of the tested contact 1, the plug-pull piece 3 can be arranged at the lower end of the sliding rod 202, the lower end of the sliding rod 202 is lower than the lower end of the plug-pull piece 3, the lower end of the sliding rod 202 is connected with the upper limit nut 5 to prevent the plug-pull piece 3 and the sliding rod 202 from relative displacement, and the limit nut 5 can select a corresponding standard piece or a self-made piece according to the size of threads on the sliding rod 202. And then the contact positioning tool 4 is arranged on the three-jaw chuck 203 on the circular workbench 204, the three-jaw chuck 203 can move outwards or inwards through the rocker arm on the slotting machine 2, so that the contact positioning tool 4 can be clamped and loosened, the three-jaw chuck 203 and the circular workbench 204 are always coaxial, and the circular workbench 204 and the sliding rod 202 are coaxial. And connecting the tested contact 1 to the contact positioning tool 4, and inputting parameters such as plugging times, plugging speed, plugging depth and the like into the program controller to start a detection test of the service life of the contact.

is the abrasion condition of the projecting structure 101 in the tested contact 1 and the shedding condition of the silver coating, the observation mode is visual observation, after the set times of inserting and pulling test, the visual observation is whether the projecting part in the tested contact 1 has obvious abrasion condition and the shedding condition of the silver coating, the second is whether the tested contact 1 has deformation condition and the petal part is the key inspection position, after the set times of inserting and pulling test, the caliper rule is used to inspect whether the sizes of the petal part and other parts of the tested contact 1 are equal to before the test.

In other embodiments, the threaded hole on the plug piece can be a blind hole, when the plug piece is installed on the slotting machine slide bar, a limit nut does not need to be installed, and the structure of the plug piece connected with the slotting machine can also be any other structure, so that the structure is designed according to the principle of actively adapting to the connection structure of the slotting machine and not changing the slotting machine.

In other embodiments, the contact positioning tooling may be configured in other shapes, such as by configuring the upper and lower diameters of the contact positioning tooling to be different, the smaller diameter portion to be a threaded connection portion, and the larger diameter portion to be a base portion.

In other embodiments, the parameters of the contact plugging test may be controlled in other ways, for example by a non-programmable controller, or manually.