CN211373453U

CN211373453U - Aperture measuring device

Info

Publication number: CN211373453U
Application number: CN202020184345.8U
Authority: CN
Inventors: 刘海军
Original assignee: Shanghai Tongcheng Enterprise Development Co ltd
Current assignee: Shanghai Tongcheng Enterprise Development Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-08-28
Anticipated expiration: 2030-02-19

Abstract

The utility model relates to an aperture measuring device, the percentage table that sets up including the level, the dial plate of percentage table is vertical upwards, the tip of the measuring stick of percentage table is provided with first measuring block, the vertical downward setting of first measuring block, the bottom level of first measuring block is provided with first needle that supports, there is second measuring block on the percentage table, the vertical setting of second measuring block, the bottom level of second measuring block is provided with the second and supports the needle, the measuring stick of first measuring block, second measuring block, first needle, second support needle and percentage table is in same vertical plane, first needle and second support the needle and be in on the same water flat line, first needle and the second support the directional looks of needle and deviate from. The utility model discloses have the effect that can effectively measure circle shape recess size in the trompil.

Description

Aperture measuring device

Technical Field

The utility model belongs to the technical field of measuring device's technique and specifically relates to an aperture measuring device is related to.

Background

With the rapid development of the industry, the requirements on the quality and the precision of the workpiece are higher and higher. Dial indicator, outside micrometer and vernier caliper are three most widely used precision measuring tools in the mechanical manufacturing industry. The dial indicator is a gauge type general length measuring tool manufactured by utilizing a precise rack and pinion mechanism, and generally comprises a measuring head, a measuring rod, a shockproof spring, a rack, a gear, a hairspring, a round dial, a pointer and the like, and the inner diameter dial indicator is the deformation of the dial indicator and can conveniently measure the aperture size.

The prior Chinese utility model with the publication number of CN209570097U discloses an inner diameter dial indicator with a telescopic extension rod, which comprises a dial indicator, a locking device, a vertical rod, a movable measuring extension rod and a contact extension rod, the contact connecting rod can slide in the fixed pipe, the contact connecting rod slides in the telescopic pipe, the telescopic pipe slides in the fixed pipe, a contraction and expansion joint is arranged in the generatrix direction of the outer circular surface of the extension tube, a locking thread is arranged on the extension tube and matched with a locking nut, the diameter of the telescopic pipe can be reduced, the length of the expanding and contracting seam is equal to that of the locking thread, and is positioned at the same section of the extension tube, a gap is arranged in the bus direction of the extension tube corresponding to the upright post, the gap can ensure that the telescopic pipe does not interfere with the internal element when being retracted in the fixed pipe. Has the effect of convenient use.

The above prior art solutions have the following drawbacks: when the bore diameter is measured by using the bore diameter dial indicator, zero position calibration is firstly carried out, a measuring head vertically extends into a measured workpiece, the vertical axis of the dial indicator is ensured to be parallel to the central line of the workpiece, a movable measuring connecting rod and a contact connecting rod are contacted with the inner wall of the workpiece, then the bore diameter dial indicator is reciprocated in the longitudinal section of a hole, the change of the indicator value of the dial indicator is observed, and when the minimum value of the indicator of the dial indicator is turned and swung, recorded data is read. Some work pieces are opened on the trompil inner wall and are seted up the circular recess that the degree of depth is shallower, and the activity is measured and is connect pole and contact to connect the pole and can't stretch into the recess, can't utilize the effectual size to the recess of internal diameter percentage table among the above-mentioned scheme to measure.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an aperture measuring device, it has the effect that can effectively measure the downthehole circular recess size of seting up.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an aperture measuring device, includes the percentage table that the level set up, the dial plate of percentage table is vertical upwards to be set up, the tip of the measuring stick of percentage table is provided with first measuring block, the vertical downward setting of first measuring block, the bottom level of first measuring block is provided with first needle that supports, be provided with second measuring block on the percentage table, the vertical setting of second measuring block, the bottom level of second measuring block is provided with the second and supports the needle, the measuring stick that first measuring block, second measuring block, first needle, second supported needle and percentage table is in same vertical plane, first needle and second supported the needle and are in same water flat line, first needle and second supported the needle and to deviate from to mutually.

By adopting the technical scheme, when the circular groove in the opening needs to be measured, the dial indicator is calibrated to a zero position, namely the dial indicator of the dial indicator is adjusted according to the standard size of the circular groove by utilizing the ring gauge or the outer diameter dial indicator, so that the pointer on the dial indicator points to the zero scale, then the first measuring block, the second measuring block, the first abutting pin and the second abutting pin extend into the opening of the workpiece, the central axis of the dial indicator is perpendicular to the axis of the opening, the first abutting pin and the second abutting pin are respectively abutted on the inner side wall of the circular groove, then the dial indicator is held by a hand to slightly swing around the vertical axis of the opening, the reading of the dial indicator is read, and the diameter of the opening can be calculated.

The present invention may be further configured in a preferred embodiment as: the dial indicator is characterized in that a toggle piece is arranged on a measuring rod of the dial indicator, and the toggle piece is vertically arranged upwards.

Through adopting above-mentioned technical scheme, on the one hand the staff more convenient in the adjustment measuring stick, on the other hand is carrying out measuring in-process, and the measuring stick can regard as vertical datum line, makes things convenient for more convenient more accurate the operation of carrying on of staff, guarantees the accuracy in the measurement process.

The present invention may be further configured in a preferred embodiment as: the dial piece is arranged in an arc shape on the face far away from the dial plate of the dial indicator.

Through adopting above-mentioned technical scheme, the shape that the piece was dialled accords with the shape that the staff pointed more for the staff is more horizontal stable when promoting to dial the piece and carry out the fine setting measuring stick, has guaranteed the precision and the convenience of regulation.

The present invention may be further configured in a preferred embodiment as: the poking piece is detachably connected with the measuring rod of the dial indicator.

Through adopting above-mentioned technical scheme, stir dismantlement that can be convenient to adapt to not unidimensional measuring stick, the position of piece is stirred in adjustment that simultaneously can be convenient facilitates the use.

The present invention may be further configured in a preferred embodiment as: the first needle and the first measuring block can be detachably connected, and the second needle and the second measuring block can be detachably connected.

By adopting the technical scheme, on one hand, the first supporting needle and the second supporting needle with different length specifications can be replaced according to the diameter of the measured opening, so that the measuring device is suitable for measuring openings with different diameters; on the other hand can change the first needle and the second of supporting of different diameters and support the needle to the circular recess of adaptation unnecessary width guarantees that first needle and the second of supporting can support on the inside wall of circular recess. The measuring range of the measuring device is increased.

The present invention may be further configured in a preferred embodiment as: the first needle and the second of propping are all provided with the arch to the needle lateral wall.

Through adopting above-mentioned technical scheme, protruding first needle and the second of supporting to the frictional force between needle lateral wall and the staff of having increased, avoid supporting the needle landing, with first needle and the second of supporting to carry out more convenience when dismouting.

The present invention may be further configured in a preferred embodiment as: the dial plate lower surface sliding connection of percentage table has the carriage, the carriage is in same vertical plane with the measuring stick of percentage table, the slip direction of carriage is parallel with the length direction of the measuring stick of percentage table, be equipped with locking mechanism on the carriage, the upper end fixed connection of second measuring block is on the mount.

Through adopting above-mentioned technical scheme, the sliding frame drives the second and measures the piece and slide when sliding at the dial plate lower surface of percentage table, then utilizes locking mechanism to lock to this measuring device's range has effectively been enlarged, makes this measuring device can measure the circular recess of different diameters, has improved measuring device's suitability.

The present invention may be further configured in a preferred embodiment as: first measuring block and second measuring block all are equipped with the cavity, sliding connection has the slider in the cavity, between first measuring block and the slider between second measuring block and the slider all be provided with fixed establishment.

Through adopting above-mentioned technical scheme, when circular recess position is darker, loosen fixed knot to construct, take the slider out along vertical direction, take out certain length with the slider after, utilize fixed establishment to fix the slider, can be so that measuring device's the measuring depth effectively promotes, has improved measuring device's suitability.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the device can effectively measure the size of the inner groove of the open hole by horizontally placing the dial indicator, arranging the first measuring block and the second measuring block and correspondingly arranging the first supporting pin and the second supporting pin;

2. through the arrangement of the poking piece, the operation of workers is more convenient and stable;

3. the measuring device can measure circular grooves with different diameters by the arrangement of the first supporting needle and the first measuring block, the arrangement of the second supporting needle and the second measuring block which are detachably connected and the arrangement of the sliding frame;

4. through the setting of slider for measuring device can effectively measure the size of the circular recess that is located the different degree of depth.

Drawings

FIG. 1 is a schematic perspective view of an aperture measuring device;

FIG. 2 is a schematic view for illustrating the locking mechanism and the securing mechanism;

FIG. 3 is an exploded schematic view of a slider;

fig. 4 is a partially enlarged view of a portion a in fig. 2.

In the figure, 1, a dial indicator; 2. a first measurement block; 21. a first needle support; 3. a second measurement block; 31. a second needle support; 4. a toggle piece; 5. a protrusion; 6. a carriage; 61. a slide rail; 62. a chute; 7. a locking mechanism; 71. a bump; 72. a through groove; 73. locking the bolt; 9. a slider; 91. a guide rail; 10. a fixing mechanism; 101. a first through hole; 102. a second through hole; 103. and (7) clamping blocks.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an aperture measuring device, percentage table 1 including the level setting, the dial plate of percentage table 1 is vertical upwards to be set up, the vertical first measuring block 2 that is provided with of tip at the measuring stick of percentage table 1, bottom level at first measuring block 2 is provided with first needle 21 of supporting, there is second measuring block 3 on the percentage table 1, the vertical setting of second measuring block 3, the bottom level of second measuring block 3 is provided with second needle 31 of supporting, first measuring block 2, second measuring block 3, first needle 21 of supporting, the second is supported needle 31 and percentage table 1's measuring stick and all is in same vertical plane, first needle 21 and the second of supporting is supported needle 31 and is in on the same water flat line, first needle 21 of supporting deviates from with second needle 31 is directional.

Referring to fig. 1, a toggle piece 4 is arranged on a position, close to a first measuring block 2, of a measuring rod of the dial indicator, the toggle piece 4 is vertically arranged, one end, far away from the measuring rod, of the toggle piece 4 points upwards vertically, the setting enables a worker to conveniently judge the position of the dial indicator 1 by taking the measuring rod as a reference when operating, the length of the measuring rod can be conveniently adjusted through the toggle piece 4 when needing to be adjusted, and an arc shape is arranged on one side, far away from the dial indicator 1, of the toggle piece 4, so that the dial indicator can be conveniently pulled by hands; in order to adapt to not unidimensional measuring stick, establish to dismantling between 4 and the measuring stick and be connected, specifically for stirring 4 and set up to elastic plastic spare, stir the bottom of 4 and set up to the ring form, stir the bottom of 4 and be equipped with the opening, when will stir 4 and install on the measuring stick, will stir the bottom opening of 4 and strut, the joint can in the outside of the measuring stick of percentage table.

Referring to fig. 1, the first pin 21 and the first measuring block 2, and the second measuring block 3 and the second pin 31 are detachably connected, and specifically, the first pin 21 is connected to the first measuring block 2 through a bolt, and the second pin 31 is connected to the second measuring block 3 through a bolt, the first pin is connected to the first measuring block 2 through a bolt, and the second pin is connected to the second measuring block 3 through a bolt. When the trompil of different diameters is measured to needs, the not unidimensional first needle 21 and the second of supporting of change that can be more convenient supports needle 31, strengthens this measuring device's suitability, supports needle 21 and the second at first and is provided with arch 5 to the lateral wall of needle 31, makes things convenient for the staff to carry out the rotating dismouting, facilitates the use.

Referring to fig. 2 and 4, two sliding rails 61 which are parallel to the measuring rod are arranged on the lower surface of the dial plate of the dial indicator 1, a sliding frame 6 is connected on the sliding rails 61 in a sliding manner, the sliding rails 61 are rectangular blocks, sliding grooves 62 are arranged on the top surfaces of the sliding rails 61, and the sliding frame 6 is connected on the sliding rails 61 in a sliding manner; the center of the dial indicator 1 is provided with a locking mechanism 7 which comprises a through groove 72 arranged in the middle of the sliding frame 6 and arranged along the length direction of the sliding block, a convex block 71 at the center of the bottom of the dial plate of the dial indicator 1 and a locking bolt 73, the sliding frame 6 and the measuring rod of the dial indicator 1 are positioned in the same vertical plane, the sliding direction of the sliding frame 6 is parallel to the length direction of the measuring rod of the dial indicator 1, and the upper end of the second measuring block 3 is fixedly connected to the fixed frame. The sliding frame 6 drives the second measuring block 3 to slide when sliding on the lower surface of the dial plate of the dial indicator 1, and then the locking mechanism 7 is utilized to lock, so that the measuring range of the measuring device is effectively enlarged, the measuring device can measure circular grooves with different diameters, and the applicability of the measuring device is further improved.

Referring to fig. 2 and 3, first measuring block 2 and second measuring block 3 all are equipped with the cavity, and the vertical direction of inner wall of cavity is provided with guide rail 91, and sliding connection has slider 9 on guide rail 91, all is provided with fixed establishment 10 between first measuring block 2 and the slider 9, between second measuring block 3 and the slider 9, and fixed establishment 10 includes a plurality of first through-holes 101 of seting up in the vertical direction of first measuring block 2, second through-hole 102 and fixture block 103 of seting up at the slider 9 top. When not using, can receive slider 9 back in first measuring block 2 or second measuring block 3, utilize fixture block 103 to be connected between slider 9 and the first measuring block 2, when circular recess position is darker, loosen fixed establishment 10, take slider 9 out along vertical direction, take slider 9 out certain length after, utilize fixture block 103 to fix slider 9, can make the different trompil of measuring device measuring depth, improved measuring device's suitability.

The implementation principle of the embodiment is as follows: when the circular groove in the open hole needs to be measured, firstly, the dial indicator 1 is calibrated to a zero position, the dial indicator of the dial indicator 1 is adjusted according to the basic size of the circular groove by using a ring gauge or an outer diameter dial gauge, so that the pointer points to the zero scale, and the distance between the opposite ends of the first supporting pin 21 and the second supporting pin 31 is equal to the basic size of the circular groove;

then, the first measuring block 2, the second measuring block 3, the first resisting pin 21 and the second resisting pin 31 extend into an opening of the workpiece, and the central axis of the dial indicator 1 and the diameter of the opening are in the same vertical plane, so that the first resisting pin 21 and the second resisting pin 31 are respectively resisted on the side wall in the circular groove;

then, the dial indicator 1 is held by hand and slightly swings around the vertical axis of the opening, and the diameter of the circular groove can be obtained through subsequent calculation by reading the reading of the dial indicator 1. For example, if the dial gauge 1 reads a and the basic size of the circular groove is B, the diameter of the circular groove has a value of a + B.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an aperture measuring device, includes percentage table (1) that the level set up, the dial plate of percentage table (1) is vertical upwards to be set up its characterized in that: the tip of the measuring stick of percentage table (1) is provided with first measuring block (2), the vertical downward setting of first measuring block (2), the bottom level of first measuring block (2) is provided with first needle (21) of supporting, there is second measuring block (3) on percentage table (1), the vertical setting of second measuring block (3), the bottom level of second measuring block (3) is provided with second needle (31) of supporting, the measuring stick of first measuring block (2), second measuring block (3), first needle (21), second needle (31) and percentage table (1) of supporting is in same vertical plane, first needle (21) and second needle (31) of supporting are in same water flat line, first needle (21) of supporting deviates from with second needle (31) orientation mutually.

2. An aperture measuring device according to claim 1, wherein: the dial indicator is characterized in that a poking piece (4) is arranged on a measuring rod of the dial indicator (1), and the poking piece (4) is vertically arranged upwards.

3. An aperture measuring device according to claim 2, wherein: the dial piece (4) is arc-shaped on the surface far away from the dial plate of the dial indicator (1).

4. An aperture measuring device according to claim 3, wherein: the poking piece (4) is detachably connected with the measuring rod of the dial indicator (1).

5. An aperture measuring device according to claim 1, wherein: the first pin (21) and the first measuring block (2) are detachably connected, and the second pin (31) and the second measuring block (3) are detachably connected.

6. An aperture measuring device according to claim 5, wherein: the outer side walls of the first abutting needle (21) and the second abutting needle (31) are provided with bulges (5).

7. An aperture measuring device according to claim 1, wherein: dial plate lower surface sliding connection of percentage table (1) has carriage (6), carriage (6) are in same vertical plane with the measuring stick of percentage table (1), the slip direction of carriage (6) is parallel with the length direction of the measuring stick of percentage table (1), be equipped with locking mechanism (7) on carriage (6), the upper end fixed connection of second gauge block (3) is on carriage (6).

8. An aperture measuring device according to claim 1, wherein: first measuring block (2) and second measuring block (3) all are equipped with the cavity, sliding connection has slider (9) in the cavity, between first measuring block (2) and slider (9) all be provided with fixed establishment (10) between second measuring block (3) and slider (9).