CN2342349Y

CN2342349Y - Multifunctional vernier caliper

Info

Publication number: CN2342349Y
Application number: CN 98219829
Authority: CN
Inventors: 李建国; 李琦
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-03
Filing date: 1998-09-03
Publication date: 1999-10-06
Anticipated expiration: 2008-09-03

Abstract

The utility model discloses a multifunctional vernier caliper, which comprises a main scale and an auxiliary scale. The utility model is characterized in that an auxiliary scale frame is arranged in the main scale frame contacting the lower side of the main scale, an upper and a lower slide scales are arranged in the auxiliary scale frame in a parallel way, the left end of each of the scales is respectively and correspondingly provided with a miniature clamping foot which is arranged in a large clamping foot cavity, the contact surfaces of the two slide scales are respectively provided with a section of overlapped rack bars, the overlapping position of the rack bars is provided with a gear, a gear shaft is fixed on a bottom plate of the auxiliary scale frame, the upper end is provided with a trimming knob, the left end of the front surface of the auxiliary scale frame is provided with an auxiliary vernier scale, and the left end of the low slide scale is provided with a miniature clamp vernier scale. The utility model not only has the advantages and the functions of a three-purpose caliper, but also can quickly measure the width, the degree of symmetry and the parallelism of a key groove on a shaft class part.

Description

Multi-functional vernier caliper

The utility model relates to a kind of vernier caliper, is particularly suitable for being used for symmetry, the depth of parallelism of width of keyway on the Parts Measurement and present position thereof.

Existing three usefulness vernier calipers are made up of a main scale and a secondary chi, same end upper and lower at main scale and secondary chi is respectively arranged with one two corresponding kilocalorie angle and lesser calorie angle, on main scale, move around with secondary chi bar with a kilocalorie angle and a lesser calorie angle, can measure the external diameter or the internal diameter in shaft or hole from the main scale and the corresponding scale of secondary chi, secondary chi bar be inserted the degree of depth that to measure the hole in the manhole.This slide calliper rule have simple in structure, and are easy to use, measure advantage accurately, but this chi is for the symmetry of keyway on such part and present position thereof, depth of parallelism energy measurement not just.

The purpose of this utility model provides a kind of advantage and function that had both had three usefulness vernier calipers, can be convenient for measuring out width and the symmetry of present position and the multi-functional vernier caliper of the depth of parallelism of keyway on the axial workpiece again.

Task of the present utility model is to realize like this, it includes a main scale and a secondary chi, each chi bar front indicates corresponding scale, on the left end of each chi, the below is respectively arranged with little card base, big card base, it is characterized in that: in the main scale frame, paste the main scale downside and be provided with a secondary chi frame, on the secondary chi frame inner bottom plating and show, following slide rule, the left end of each slide rule is respectively arranged with the miniature card base in the big card base cavity of being contained in of mutual correspondence, be respectively equipped with the tooth bar that one section the inner overlaps mutually on the slide rule surface of contact up and down, two tooth bars are engaged with a gear with one heart in overlapping place, lower end, the center axle of gear is connected on the secondary chi frame bottom plate, there is vernier adjustment knob the axle upper end, left end is provided with secondary vernier scale in the positive top of secondary chi frame, is provided with the miniature cards vernier scale at the left end that descends slide rule.

The utility model is because of having increased by cover miniature movable slide calliper rule again on the basis of original technology, so not only have the advantage and the function of three usefulness vernier calipers, but also can measure the width of keyway on the axial workpiece and symmetry, the depth of parallelism of present position thereof quickly and accurately.Compact conformation, easy to operate, flexible, precision is high.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a kind of actual measurement state reference map of the present utility model.

To describe embodiment of the present utility model in detail in conjunction with above accompanying drawing.

The utility model is to improve on the basis of three usefulness vernier calipers, mainly be in main scale frame (12), to paste the main scale downside to be provided with a secondary chi frame (5), on secondary chi frame (5) inner bottom plating slide rule (6) is housed side by side, following slide rule (7), the left end of two slide rules is respectively arranged with the big card base A of being contained in of mutual correspondence, miniature card base C in A ' cavity, C ', on, be respectively arranged with the tooth bar (8) that one section the inner overlaps mutually on the following slide rule surface of contact, (11), two tooth bars are engaged with a gear (10) with one heart in overlapping place, the lower end of gear (10) is connected on secondary chi frame (5) base plate with axle, the axle upper end of gear (10) is fixed with vernier adjustment knob (9), be provided with secondary vernier scale (2) in left side, the positive top of secondary chi frame (5), be provided with miniature cards vernier scale (3) in the frontal left of descending slide rule (7).In order measuring conveniently, also can on the side up and down of main scale frame (12), respectively to set up one and can limit trip bolt D, the D ' that it moves.Come the width of keyway on the Parts Measurement and the symmetry of present position with these slide calliper rule, during the depth of parallelism, earlier with big card base A, A ' is stuck in the maximum gauge place under this shaft key groove, and make slide calliper rule vertical with the keyway wall as far as possible, temporary transient trip bolt D, D ', can find out that on the main scale scale maximum outside diameter of the axle of measured axis and keyway (13) is 50mm (as shown in Figure 2) this moment by 0 place's correspondence of main cursor chi (1), promote secondary chi frame (5) on this basis more left, make miniature card base C, C ' is towards the keyway position and card base is visited in people's keyway as far as possible, rotate vernier adjustment knob (9), make miniature card base C, C ' contacts with keyway two walls, can find out that at the positive scale of last slide rule (6) width of keyway is 14mm from 0 place correspondence of miniature cards vernier scale (3) this moment on the one hand, also can judge the keyway deflection left side or deflection the right near the degree of accuracy of 25mm simultaneously, know whether the symmetry of keyway radial position and this shaft centre line is accurate from the data of 0 place correspondence on the main scale scale of last slide rule (6).As the method, change an axial measurement point again, then can measure the depth of parallelism potential difference of keyway axial-radial position and this longitudinal center line.

Claims

1, multi-functional vernier caliper, it includes a main scale and a secondary chi, each chi bar front indicates corresponding scale, on the left end of each chi, the below is respectively arranged with little card base, big card base, it is characterized in that: in the main scale frame, paste the main scale downside and be provided with a secondary chi frame, on the secondary chi frame inner bottom plating and show, following slide rule, the left end of each slide rule is respectively arranged with the miniature card base in the big card base cavity of being contained in of mutual correspondence, be arranged with the tooth bar that one section the inner overlaps mutually on the slide rule surface of contact up and down, two tooth bars are engaged with a gear with one heart in overlapping place, the gear lower end is connected on the secondary chi frame bottom plate by axle, there is vernier adjustment knob the axle upper end of gear, left end is provided with secondary vernier scale in the positive top of secondary chi frame, is provided with the miniature cards vernier scale at the left end that descends slide rule.