CN210321545U - Cambered surface precision measuring instrument - Google Patents

Cambered surface precision measuring instrument Download PDF

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Publication number
CN210321545U
CN210321545U CN201921178564.9U CN201921178564U CN210321545U CN 210321545 U CN210321545 U CN 210321545U CN 201921178564 U CN201921178564 U CN 201921178564U CN 210321545 U CN210321545 U CN 210321545U
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China
Prior art keywords
measuring instrument
arc
percentage
fixed
dial indicator
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CN201921178564.9U
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Chinese (zh)
Inventor
张阳
刘敏
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Nanjing Huaxuda Precision Machinery Co Ltd
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Nanjing Huaxuda Precision Machinery Co Ltd
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Abstract

The utility model discloses a cambered surface precision measurement appearance uses in the work piece measurement field, and its technical scheme main points are: comprises a base, a rotating shaft, a cross rod arranged on the rotating shaft, a connecting piece and a dial indicator; has the technical effects that: the dial indicator can horizontally rotate in an equal-diameter mode, the accuracy of the cambered surface of the workpiece to be measured is rapidly, conveniently, accurately and intuitively measured, and the reading is displayed, so that an operator can rapidly judge whether the accuracy of the cambered surface of the workpiece to be measured reaches the standard according to the change of the reading.

Description

Cambered surface precision measuring instrument
Technical Field
The utility model relates to a work piece measurement field, in particular to work piece circular arc inner diameter measuring device.
Background
At present, produce a lot of high accuracy work pieces that contain the cambered surface in the mill, as figure 1, be equipped with cambered surface inner wall 27 and two fixed orificess 28 on the work piece 26 that awaits measuring, need detect whether accord with the standard to cambered surface inner wall 27 precision before dispatching from the factory, the internal diameter of most similar structures now need measure with the help of three-coordinate measuring instrument, this instrument measurement process is complicated, it is loaded down with trivial details, need carry out the multiple spot and take a little the fit, measuring time is longer, and can not be quick, it accords with the standard whether to detect out the circular arc internal diameter directly perceivedly, consequently, need a can be fast convenient in the trade, the instrument that detects the cambered surface precision is carried.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cambered surface precision measurement appearance, its advantage: the cambered surface precision of the workpiece to be measured can be rapidly, conveniently, accurately and intuitively measured and the reading is displayed, so that an operator can rapidly judge whether the inner diameter of the workpiece to be measured reaches the standard according to the deviation of the pointer of the dial indicator.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an arc surface precision measurement appearance, includes base, rotation axis and percentage table, the rotation axis rotates and connects on the base, be equipped with the horizontal pole on the rotation axis, the percentage table passes through the connecting piece and is connected with the horizontal pole, be equipped with the fixed column that two symmetries set up on the base, be equipped with the fixed axle that passes the fixed orifices on the fixed column.
Through the technical scheme, the operator overlaps the fixed orifices of the work piece that awaits measuring on the fixed axle, thereby the cambered surface inner wall of the work piece that awaits measuring towards the rotation axis vertical fixation on the fixed column, pass through the connecting piece with the percentage table and fix on the horizontal pole, when the horizontal pole rotates along with the rotation axis, the percentage table carries out the sizing rotation along with the rotation of horizontal pole, the cambered surface inner wall of the work piece that awaits measuring is slided to the measuring head when the percentage table rotates, the operator can observe the offset of percentage table this moment, if the offset is within the predetermined value, alright judge that the cambered surface precision of the work piece that awaits measuring accords with the standard, if the.
The utility model discloses further set up to: the connecting piece includes boss and hole, the boss sets up in the one end of horizontal pole, the hole is seted up in the boss and is deviated from one side of base, the bottom of percentage table is equipped with the extension board, be equipped with on the extension board with hole threaded connection's first bolt.
Through above-mentioned technical scheme, during fixed percentage table, with the directional rotation axis of fender cap of percentage table, the hole on the boss is aimed at to the first bolt on the extension board, presses the extension board with the hand, twists tight first bolt to it is quick convenient to fix the percentage table on the horizontal pole.
The utility model discloses further set up to: the connecting piece can also be provided with two symmetrically-arranged sliding grooves, the sliding grooves are formed in one side, away from the base, of the cross rod, sliding blocks are connected in the sliding grooves in a sliding mode, springs are arranged in the sliding grooves, two ends of each spring are connected to the groove wall of each sliding groove and the corresponding sliding block respectively, grooves are formed in the opposite sides of the two sliding blocks, and the discs of the dial indicator are clamped in the grooves of the two sliding blocks.
Through above-mentioned technical scheme, the operator struts two sliders with the hand, places the disc level of percentage table in the recess of two sliders, and the spring is in elongated state this moment, and the operator loosens the slider, and the spring of slider bottom drags the slider to two relative one sides of slider this moment, consequently makes the percentage table tightly press from both sides in the recess of two sliders to install the percentage table on the horizontal pole fast.
The utility model discloses further set up to: the clamping piece is arranged in the groove and connected in the groove through a second bolt, the shape and the size of the inner wall of the clamping piece are matched with the disk of the dial indicator, and the clamping piece is clamped on two sides of the disk of the dial indicator.
Through above-mentioned technical scheme, the clamping piece presss from both sides in the both sides of percentage table disc, therefore the different percentage table of dial plate size can be installed to the clamping piece of equidimension.
The utility model discloses further set up to: and a handle is arranged on one side of the rotating shaft, which deviates from the cross rod.
Through above-mentioned technical scheme, when needing to rotate the percentage table, the rotatable hand (hold) of operator, through hand (hold) drive rotation axis rotation, the rotation of rotation drive horizontal pole of rotation axis, the percentage table that the rotation drive of horizontal pole was fixed on the horizontal pole carries out the sizing and rotates to make the operator rotate the percentage table sooner and sooner.
The utility model discloses further set up to: the fixed shaft is sleeved with a gasket, and the gasket is arranged below the fixed hole of the workpiece to be detected.
Through above-mentioned technical scheme, the levelness of the gasket through the finish machining is higher than the levelness of fixed column, consequently overlaps the levelness of multiplicable work piece that awaits measuring on the fixed column with the gasket to reduce the deviation when the work piece that awaits measuring is fixed, on the other hand, the gasket of selecting different thickness can be fixed the work piece that awaits measuring at different heights, thereby can measure the cambered surface inner wall of co-altitude on the work piece that awaits measuring.
The utility model discloses further set up to: the clamp is characterized in that a pressing shaft in threaded connection with the fixing column is arranged on the fixing column, a rotary block is connected to the pressing shaft, a pressing sheet is sleeved on the pressing shaft, when the pressing shaft is screwed downwards, the rotary block abuts against the pressing sheet, and at the moment, the pressing sheet presses a workpiece to be tested on a gasket.
Through the technology, after the workpiece to be detected is sleeved on the fixed column, an operator pushes the pressing sheet to one side of the workpiece to abut against the pressing sheet on the workpiece to be detected, the pressing shaft is screwed, the rotary block on the pressing shaft abuts against the pressing sheet, the pressing sheet abuts against the workpiece to be detected, the workpiece to be detected is fixed on the fixed column, and the workpiece to be detected is fixed on the fixed column quickly and conveniently.
The utility model discloses further set up to: and the side surface of the fixed column is provided with an inwards concave track for the movement of the measuring head of the dial indicator.
Through above-mentioned technique, when removing the percentage table, the measuring head of percentage table passes the indent track when the fixed column, reduces the measuring head of percentage table and hits the possibility of fixed column.
The utility model discloses further set up to: the base is provided with a zeroing device.
Through the technology, the dial indicator returns to zero when the measuring head of the dial indicator contacts the return-to-zero device, and the pointer of the dial indicator points to the zero scale and then measures, so that an operator can judge whether the precision of the cambered surface meets the standard according to the offset of the pointer, and further can quickly judge whether the precision of the cambered surface of the workpiece to be measured reaches the standard.
The utility model discloses further set up to: and a wear-resistant sleeve is sleeved on the measuring head which is in contact with the workpiece to be measured on the dial indicator.
Through the technology, an operator sleeves the wear-resistant sleeve on the measuring head of the dial indicator before measurement, so that the wear of the measuring head of the dial indicator can be reduced.
To sum up, the utility model discloses following beneficial effect has:
1. the dial indicator can quickly, conveniently, accurately and visually display the reading, and an operator can judge whether the accuracy of the cambered surface of the workpiece to be measured meets the standard or not according to the rotation of the pointer of the dial indicator;
2. when the dial indicator needs to be replaced, the clamping pieces with different sizes can be replaced, and therefore the dial indicators with different sizes can be conveniently installed.
Drawings
Fig. 1 is a schematic structural diagram of a workpiece to be measured in the prior art.
Fig. 2 is a schematic view of the entire structure of embodiment 1.
Fig. 3 is a schematic structural view for embodying the connecting member in embodiment 1.
Fig. 4 is a schematic view of fixing the workpiece to be measured in embodiment 1.
Fig. 5 is a sectional view for embodying the concave track function in embodiment 1.
Fig. 6 is a schematic view of the structure of the connector in embodiment 2.
Fig. 7 is an enlarged view of a portion a in fig. 6.
FIG. 8 is a sectional view of the joint member in example 2.
Reference numerals: 1. a base; 2. a rotating shaft; 3. a handle; 4. a cross bar; 5. a boss; 6. fixing a column; 7. a return-to-zero device; 8. an extension plate; 9. a gasket; 10. a fixed shaft; 11. a pressing shaft; 12. a compression sheet; 13. a recessed track; 14. a dial indicator; 15. a hole; 16. a slider; 17. a chute; 19. a groove; 20. a clip; 21. a second bolt; 22. a spring; 23. rotating the block; 24. a measuring head; 25. a wear-resistant sleeve; 26. a workpiece to be tested; 27. an inner wall of the cambered surface; 28. a fixing hole; 29. a first bolt; 30. a connecting member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: the utility model provides an cambered surface precision measurement appearance, as figure 2, including base 1, rotation axis 2 and percentage table 14, rotation axis 2 rotates with base 1 to be connected, be connected with the horizontal pole 4 that the level set up on rotation axis 2, the one end of keeping away from rotation axis 2 on horizontal pole 4 is equipped with the connecting piece 30 that is used for connecting horizontal pole 2 and percentage table 14, one side that rotation axis 2 deviates from horizontal pole 4 is equipped with hand (hold) 3, when the operator rotates hand (hold) 3, thereby the rotatory rotation of 2 rotatory drive horizontal poles 4 of 3 drive rotation axes of hand (hold), percentage table 14 that the rotary drive of horizontal pole 4 installed on horizontal pole 4 carries out.
As shown in fig. 3, the connecting member 30 includes a boss 5, a hole 15 and an extension plate 8 fixed at the bottom of the dial indicator 14, the boss 5 is disposed on one side of the cross rod 4 departing from the rotating shaft 2, the hole 15 is disposed on one side of the boss 5 departing from the cross rod 4, the extension plate 8 is provided with a first bolt 29, the first bolt 29 on the extension plate 8 is aligned with the hole 15 on the boss 5 during installation, the measuring head 24 of the dial indicator 14 points to the direction departing from the rotating shaft 2, and the first bolt 29 is screwed into the hole 15, so that the dial indicator 14 is fixed on the cross rod 4.
As shown in fig. 2 and 3, the base 1 is connected with the zeroing device 7 through a bolt, an operator pushes the measuring head 24 of the dial indicator 14 against the zeroing device 7, the dial indicator 14 is zeroed at the moment, the measuring head 24, which is in contact with a workpiece to be measured, on the dial indicator 14 is sleeved with the wear-resistant sleeve 25, and friction of the measuring head 24 is reduced to prolong the service life of the dial indicator 14.
As shown in fig. 2 and 4, two symmetrically arranged fixing columns 6 are arranged on the base 1, a fixing shaft 10 is arranged on the fixing column 6, a gasket 9 is sleeved on the fixing shaft 10, a pressing shaft 11 is connected to the fixing column 6 in a threaded manner, a pressing sheet 23 is sleeved on the pressing shaft 11, a rotating block 23 is arranged at the top of the pressing shaft 11, when a workpiece 26 to be tested is installed, firstly, the two gaskets 9 are respectively sleeved on the two fixing shafts 10, then, two fixing holes 28 on the workpiece 26 to be tested are sleeved on the two fixing shafts 10, then, the gaskets are poked above the workpiece 26 to be tested, and finally, the pressing shaft 11 is rotated downwards until the rotating block 23 butts against the pressing sheet.
As shown in fig. 4 and 5, the side surface of the fixing post 6 is provided with the concave rail 13, and the measuring head 24 passes through the concave rail 13 when the dial indicator 14 rotates, so as to reduce the possibility that the measuring head 24 of the dial indicator 14 collides with the fixing post 6 during measurement.
The method comprises the following operation steps: an operator firstly horizontally places the dial indicator 14 on the boss 5, the measuring head 24 of the dial indicator 14 faces the direction far away from the rotating shaft 2, then the bolt on the extending plate 8 is aligned with the hole 15 and screwed, at the moment, the installation of the dial indicator 14 is completed, then the handle 3 is moved to move the measuring head 24 of the dial indicator 14 onto the zeroing device 7, at the moment, the zeroing is carried out on the dial indicator 14, the pointer of the dial indicator 14 points to 0 scale, then the gasket 9 and the workpiece 26 to be measured are sleeved on the fixing shaft 10, the pressing sheet 12 is pushed onto the workpiece 26 to be measured to tightly screw the rotary block 23, at the moment, the pressing sheet 12 is tightly pressed on the workpiece 26 to be measured, at last, the handle 3 is rotated, the measuring head 24 of the dial indicator slides over the inner wall 27 of the cambered surface of the workpiece 26 to be measured, if the standard value of the circular arc precision is 10, the allowable machining error is 5, at the moment, the operator can judge the, the deviation of the pointer is less than 5 or more than 15, and the arc surface precision of the workpiece 26 to be measured can be judged to be not up to the standard.
Example 2: a device for measuring diameter is different from that of embodiment 1 in that, as shown in fig. 7 and 8, a connecting piece 30 comprises two symmetrically arranged sliding grooves 17, sliding blocks 16 are connected in the sliding grooves 17 in a sliding mode, grooves 19 are formed in one sides, opposite to the two sliding blocks 16, of the two sliding blocks 16, springs 22 are arranged in the sliding grooves 17, two ends of each spring 22 are connected to the groove wall of the corresponding sliding groove 17 and the corresponding sliding block 16 respectively, and an operator can directly clamp a dial plate 14 of a dial indicator in the grooves 19 in a horizontal mode during installation.
As shown in fig. 7 and 8, because the dial indicators 14 on the market have different surface disc sizes, in order to be able to install the dial indicators 14 of various sizes, the two grooves 19 are internally provided with the clamping pieces 20 connected by the second bolts 21, during installation, an operator can select the clamping pieces 20 of different sizes to be installed in the grooves 19 according to the size of the dial indicator 14 disc, then the second bolts 21 are screwed to fix the clamping pieces 20 in the grooves 19, after the clamping pieces 20 are installed, the operator can spread the sliding blocks 16 by hand, the disc of the dial indicator 14 is horizontally placed between the two clamping pieces 20 by the other hand, the measuring head 24 of the dial indicator points to the direction far away from the rotating shaft 2, and finally the sliding blocks 16 are loosened to clamp the clamping pieces 20 at the two sides of the dial indicator 14 disc, so that the dial indicator 14 can be quickly.
The implementation principle of the implementation case is as follows: the dial indicator 14 is placed horizontally between the two jaws 20, the disk of the dial indicator 14 expands the two sliders 16 through the jaws 20, so that the springs 22 at the bottoms of the two sliders 16 are placed in a stretched state, and due to the elasticity of the springs 22, the springs 22 pull the sliders 16 towards the dial indicator 14, so that the jaws 20 on the sliders 16 are tightly clamped on the two sides of the disk of the dial indicator 14.
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 (10)

1. The utility model provides an cambered surface precision measurement appearance which characterized in that: including base (1), rotation axis (2) and percentage table (14), rotation axis (2) rotate to be connected on base (1), be equipped with horizontal pole (4) on rotation axis (2), percentage table (14) are connected with horizontal pole (4) through connecting piece (30), be equipped with fixed column (6) that two symmetries set up on base (1), be equipped with fixed axle (10) that pass fixed orifices (28) on fixed column (6).
2. The arc surface accuracy measuring instrument according to claim 1, wherein: connecting piece (30) include boss (5) and hole (15), boss (5) set up in horizontal pole (4) keep away from the one end of rotation axis (2), one side that boss (5) deviate from base (1) is seted up in hole (15), the bottom of percentage table (14) is equipped with extension board (8), be equipped with on extension board (8) with hole (15) threaded connection's first bolt (29).
3. The arc surface accuracy measuring instrument according to claim 1, wherein: connecting piece (30) include spout (17) that two symmetries set up, one side that deviates from base (1) is seted up in horizontal pole (4) in spout (17), sliding connection has slider (16) in spout (17), be equipped with spring (22) in spout (17), the both ends of spring (22) are connected respectively on the cell wall and slider (16) of spout (17), two one side that slider (16) is relative is seted up fluted (19), the disc of percentage table (14) is pressed from both sides in recess (19) of two sliders (16).
4. The arc surface accuracy measuring instrument according to claim 3, wherein: be equipped with clamping piece (20) in recess (19), in clamping piece (20) pass through second bolt (21) connecting groove (19), the shape and the disc of size and percentage table (14) of clamping piece (20) inner wall cooperate, clamping piece (20) press from both sides in the both sides of percentage table (14) disc.
5. The arc surface accuracy measuring instrument according to claim 1, wherein: and a handle (3) is arranged on one side of the rotating shaft (2) departing from the cross rod (4).
6. The arc surface accuracy measuring instrument according to claim 1, wherein: the fixed shaft (10) is sleeved with a gasket (9), and the gasket (9) is arranged below the fixed hole (28).
7. The arc surface accuracy measuring instrument according to claim 6, wherein: the device is characterized in that a pressing shaft (11) in threaded connection with the fixing column (6) is arranged on the fixing column (6), a rotating block (23) is fixed on the pressing shaft (11), a pressing sheet (12) is sleeved on the pressing shaft (11), when the pressing shaft (11) is turned downwards, the rotating block (23) abuts against the pressing sheet (12), and a workpiece (26) to be detected is pressed on the gasket (9) through the pressing sheet (12).
8. The arc surface accuracy measuring instrument according to claim 7, wherein: and the side surface of the fixed column (6) is provided with an inwards concave track (13) for the movement of a measuring head (24) of the dial indicator (14).
9. The arc surface accuracy measuring instrument according to claim 1, wherein: the base (1) is provided with a zeroing device (7).
10. The arc surface accuracy measuring instrument according to claim 1, wherein: and a measuring head (24) of the dial indicator (14) is sleeved with a wear-resistant sleeve (25).
CN201921178564.9U 2019-07-24 2019-07-24 Cambered surface precision measuring instrument Active CN210321545U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921178564.9U CN210321545U (en) 2019-07-24 2019-07-24 Cambered surface precision measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921178564.9U CN210321545U (en) 2019-07-24 2019-07-24 Cambered surface precision measuring instrument

Publications (1)

Publication Number Publication Date
CN210321545U true CN210321545U (en) 2020-04-14

Family

ID=70125783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921178564.9U Active CN210321545U (en) 2019-07-24 2019-07-24 Cambered surface precision measuring instrument

Country Status (1)

Country Link
CN (1) CN210321545U (en)

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