Try squareTechnical field
The utility model relates to a kind of testing tool, and more particularly, it relates to a kind of try square.
Background technology
Try square is a kind of professional measurer, referred to as angle square, is also called as guiding ruler in some occasion, and it is for the verticality of the verticality and workpiece relative position that detect workpiece, sometimes also for line.Be applicable to the verticality inspection of lathe, plant equipment and parts, locating and machining is installed, line etc. is the important survey instrument in machinery industry, its feature is that precision is high, good stability, is convenient to maintenance, the detection to mould bases is just included in the field of its application, because in the processing of mould bases, there is certain requirement to the verticality of mould bases, need detection mould bases being carried out to verticality.
In currently available technology, adopt try square and clearance gauge to coordinate mostly, realize the measurement of mould bases verticality, this measuring method detection speed is slow, cause work efficiency very beneath, therefore, application number be 2012206021224 utility model patent provide a kind of direct reading dial gauge try square, comprise rod support and the chi post of orthogonal setting, on the chi post of try square, slippage is connected with dial gauge.
In use, first rod support is leaned against on the side of mould bases, again chi post is abutted with mould bases another side subsequently, now dial gauge abuts with the side of mould bases, directly can read reading by dial gauge, complete the measurement operation of mould bases lateral surface verticality, when detecting, by rod support near mould bases, take rod support as axis rotation try square, chi post slides on the side of mould bases, one for better regulating the position of test, testing staff is facilitated to observe, and the detection position of adjustable ruler post, multi-faceted detection can be carried out to mould bases, more comprehensively can detect the verticality of mould bases corner, but owing to needing to increase dial gauge in the inside of chi post, the thickness of such chi post is thicker, when actual measurement, chi post is just larger with the contact area between mould bases, sliding in detection for a long time like this, the side that chi post abuts with mould bases is easily worn, and, owing to being that face contacts with face, chi post after being worn and mould bases can not be fitted completely, easily cause the data measuring inaccurate, error increases.
Utility model content
For the deficiency that prior art exists, fundamental purpose of the present utility model is to provide a kind of try square, can reduce the wearing and tearing of chi post and then improve measuring accuracy.
For realizing above-mentioned fundamental purpose, the utility model adopts following technical scheme: a kind of try square, comprise rod support, described rod support end vertical is provided with chi post, described chi post is parallel to rod support and is provided with some dial gauges, side on described chi post is provided with the ball for abutting with mould bases, and described ball rolls and is arranged on chi post.
Preferably, described ball is several, and some described balls are arranged along the length direction linear array of chi post.
Preferably, the side of described chi post is detachably fixed with reference column, one end of described reference column is provided with the ball grooves for placing ball, the opening part of described ball grooves is provided with the snap ring for clasping ball, and described ball is rotatably arranged in ball grooves and a part is protruded from ball grooves opening part.
Preferably, described reference column outside surface is provided with external thread, and described chi post is provided with the internal thread coordinated with external thread.
Preferably, described chi post is parallel to rod support and is provided with placement hole, described dial gauge is arranged in placement hole, and described chi post is provided with the positioning screw hole communicated with placement hole, is provided with the bolt for fixing dial gauge in described positioning screw hole.
The utility model hinge structure is compared to be had: by arranging ball in the side at chi post, when measurement, ball abuts with the side of mould bases, the side of whole chi post is not needed all to abut with mould bases, the contact of original face is replaced with point cantact, reduce contact area, reduce friction, and ball rolls to be arranged on chi post, sliding friction can be become into rolling friction, reduce the wear intensity of chi post, and, due to be point contact with mould bases, the contact area of chi post and mould bases can be reduced, and then improve measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the assembled view of the utility model try square embodiment;
Fig. 2 is the explosive view of the utility model try square embodiment;
Fig. 3 is the reference column cut-open view of the utility model try square embodiment.
In figure: 1, rod support; 2, chi post; 21, placement hole; 22, tapped through hole; 23, positioning screw hole; 3, dial gauge; 31, sleeve; 4, bolt; 5, reference column; 51, snap ring; 52, ball grooves; 6, ball.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model try square embodiment is described further.
A kind of try square, comprise rod support 1, chi post 2 is provided with at the end vertical of rod support 1, chi post 2 is parallel to rod support 1 and is provided with some dial gauges 3, chi post 2 is parallel to rod support 1 and is provided with placement hole 21, placement hole 21 runs through chi post 2 and arranges, in the present embodiment, the U-shaped setting of xsect of chi post 2, finger can be stretched in the U-type groove on chi post 2 like this, facilitate rotational positioning post 5, regulate the overhang of reference column 5, side on chi post 2 is provided with some balls 6 abutted with mould bases, ball 6 is arranged along the length direction linear array of chi post 2, as shown in Figure 2, after installing, the line of ball 6 is vertical with rod support 1, by arranging ball 6 in the side at chi post 2, when measurement, ball 6 abuts with mould bases, the side of whole chi post 2 is not needed all to abut with mould bases, reduce friction, the wearing and tearing of chi post 2 are also lowered, and, due to be point contact with mould bases, i.e. point-to-point contact, contact with face relative to face, point and point cantact, the contact area of chi post 2 and mould bases can be reduced, facilitate the location of try square, the surface irregularity avoided due to mould bases or chi post 2 causes the location of try square inaccurate, and then improve the measuring accuracy of dial gauge 3, before the use, regulate the overhang of reference column 5, when the line of two balls 6 is vertical with rod support 1, now ball 6 can replace the side of chi post 2 to abut with mould bases, and, when original state, the measuring head of dial gauge 3 is longer than ball 6 and is arranged, like this when detecting, in time there is depression in mould bases surface, also can be detected by dial gauge 3, because ball 6 and dial gauge 3 are all transportable on chi post 2, therefore, in use, the relative position adjusting ball 6 and dial gauge 3 flexibly can be needed according to detection, adapt to different detection needs.
After ball 6 abuts with mould bases, now dial gauge 3 also can contact with mould bases, by reading the reading on dial gauge 3, the verticality of mould bases can be measured, the contact of original face is replaced with point cantact, reduce contact area, reduce friction, and ball 6 rolls to be arranged on chi post 2, sliding friction can be become into rolling friction, reduce the wear intensity of chi post 2, and, due to be point contact with mould bases, the contact area of chi post 2 and mould bases can be reduced, and then improve measuring accuracy.
The side of chi post 2 is detachably fixed with reference column 5, the side of chi post 2 is provided with tapped through hole 22, external thread is provided with at the outside surface of reference column 5, external thread on reference column 5 matches with the internal thread in tapped through hole 22, coordinated with external thread by internal thread, the detachable fixing of reference column 5 can be realized, the ball grooves 52 for placing ball 6 is provided with in one end of reference column 5, the opening part of ball grooves 52 is provided with the snap ring 51 for clasping ball 6, described ball 6 is rotatably arranged in ball grooves 52 and a part is protruded from ball grooves 52 opening part, the part of stretching out snap ring 51 abuts with mould bases, in the present embodiment, the quantity of ball 6 is two, two balls 6 are set, the line of two ball 6 formations is parallel with chi post 2, such ball 6 can replace chi post 2 to abut with mould bases, and then try square can be measured mould bases, avoid chi post 2 to abut with mould bases, add the wear extent of chi post 2.
Conveniently dial gauge 3 is installed, chi post 2 is parallel to rod support 1 and is provided with placement hole 21, placement hole 21 runs through chi post 2 and arranges, the sleeve 31 of dial gauge 3 is arranged in placement hole 21, chi post 2 is provided with the positioning screw hole 23 communicated with placement hole 21, and positioning screw hole 23 is arranged perpendicular to placement hole 21, and positioning screw hole 23 is threaded connection the bolt 4 abutted with the sleeve 31 of dial gauge 3, during installation, sleeve 31 line of dial gauge 3 inserts in placement hole 21.
Below be only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.