CN211717404U - Rotatable clamping and positioning device for straightness detection of working edge of knife-edge-shaped ruler - Google Patents

Rotatable clamping and positioning device for straightness detection of working edge of knife-edge-shaped ruler Download PDF

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Publication number
CN211717404U
CN211717404U CN202020793356.6U CN202020793356U CN211717404U CN 211717404 U CN211717404 U CN 211717404U CN 202020793356 U CN202020793356 U CN 202020793356U CN 211717404 U CN211717404 U CN 211717404U
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China
Prior art keywords
ruler
edge
leveling
knife
grinding surface
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CN202020793356.6U
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Chinese (zh)
Inventor
钱思皓
马天燕
刘渤
李军
王丽明
高立峰
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Hebei Institute Of Metrology Supervision And Testing Langfang Branch
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Hebei Institute Of Metrology Supervision And Testing Langfang Branch
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Abstract

The utility model discloses a rotatable clamping and positioning device for detecting the straightness of a working edge of a knife-edge-shaped ruler, which comprises a bottom plate and two positioning seats vertically arranged on the bottom plate, wherein a grinding surface leveling ruler for supporting the knife-edge-shaped ruler is arranged between the two positioning seats, and the bottom end of the grinding surface leveling ruler is limited and arranged on a leveling mechanism for adjusting the flatness of the grinding surface leveling ruler through a limiting structure of the grinding surface leveling ruler; the top ends of the opposite side walls of the two positioning seats are detachably provided with clamping mechanisms used for clamping and centering the knife-edge-shaped straight ruler left and right through the rotary driving mechanism. The utility model discloses a fixture carries out effective centre gripping location to edge of a knife shape ruler, and can swing according to the examination regulation through driving edge shape ruler through rotatory actuating mechanism for need not the hand of people and hold at the straightness accuracy verification process who carries out edge of a knife shape ruler work edge, avoided the influence of human factor, improved examination efficiency widely, improved the examination precision.

Description

Rotatable clamping and positioning device for straightness detection of working edge of knife-edge-shaped ruler
Technical Field
The utility model relates to an accurate measurement technical field, more specifically relate to a rotatable formula centre gripping positioner is used in examination of edge of a knife shape ruler work edge straightness accuracy.
Background
The knife-edge-shaped ruler is a measuring instrument with a measuring surface in a knife-edge shape and used for measuring plane shape errors of workpieces, is widely applied to the field of flatness and straightness detection of flat plates, flat rulers, machine tool workbenches, guide rails and precision workpieces, has the advantages of simple structure, light weight, no rustiness, convenience in operation, high measuring efficiency and the like, is a measuring tool commonly used for machining, and mainly has the specifications of 75mm, 125mm, 175mm, 200mm, 225mm, 300mm, 400mm, 500mm and the like according to the length of a working edge of the measuring tool.
The detection basis of the knife-edge-shaped ruler is JJG63-2007 'knife-edge-shaped ruler' detection regulation, the main detection item is the straightness of the working edge, the measurement is carried out by a light gap method, a light-transmitting gap is observed by human eyes, the width of the corresponding light gap is judged according to the visible light color, and therefore the qualitative analysis is carried out on the straightness of the working edge of the knife-edge-shaped ruler. According to the regulation requirement, the types of standard instruments and supporting equipment are more in the whole verification process, the standard instruments and the supporting equipment need to be placed again in each verification, the standard clearance building and disassembling time is longer, the square-shaped ruler needs to be supported by hands when the verification is carried out, the square-shaped ruler needs to be held by the hands when light rays are incident, the detection result is easily influenced by human factors, the labor and the time are wasted, and the verification efficiency is low. In addition, the parallelism of the grinding surface flat ruler below the knife-edge-shaped ruler and the knife-edge-shaped ruler can not be ensured during verification, the detection device is easily influenced by human factors, the human factors have great influence, the verification precision is not high, misjudgment is easy to occur, and the requirements of modern industrial development can not be completely met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rotatable formula centre gripping positioner is used in examination of edge of a knife shape ruler work edge straightness accuracy is provided, need the staff to support and receive the human factor influence easily to edge of a knife shape ruler when the straightness accuracy of solving current edge of a knife shape ruler work edge is examined and determine, examine and determine inefficiency, the problem that the precision is not high, in order to guarantee the depth of parallelism of lapping surface flat ruler and edge of a knife shape ruler in the verification process, in order to realize the effective centre gripping to edge of a knife shape ruler, avoid the influence of human factor, in order to improve examination efficiency and examination precision.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The rotatable clamping and positioning device for detecting the straightness of the working edge of the knife-edge-shaped ruler comprises a base plate and two positioning seats vertically arranged on the base plate, a grinding surface leveling ruler for supporting the knife-edge-shaped ruler is arranged between the two positioning seats, and the bottom end of the grinding surface leveling ruler is limited and arranged on a leveling mechanism for adjusting the flatness of the grinding surface leveling ruler through a grinding surface leveling ruler limiting structure; the top ends of the opposite side walls of the two positioning seats are detachably provided with clamping mechanisms used for clamping and centering the knife-edge-shaped straight ruler left and right through the rotary driving mechanism.
Further optimize technical scheme, rotatory actuating mechanism includes that the stiff end sets up on the right side positioning seat and the drive shaft end stretches out the driving motor of right side positioning seat, with driving motor's drive shaft end fixed connection's first drive carousel and rotate the second drive carousel that sets up on the positioning seat of left side and with the coaxial setting of first drive carousel.
Further optimize technical scheme, fixture is including fixed two pneumatic clamping jaws that set up respectively on first drive carousel and second drive carousel lateral wall, can dismantle respectively between the clamping jaw end of two pneumatic clamping jaws that set up with the water flat line and be connected with the grip block that is used for controlling the centre gripping centering to the knife-edge shape ruler, has certain interval between the bottom face of grip block and the top face of grinding surface ruler.
Further optimize technical scheme, leveling mechanism includes the leveling board of setting on the bottom plate through at least three leveling knob.
According to the technical scheme, the grinding surface flat ruler limiting structure comprises a plurality of pairs of grinding surface flat ruler limiting blocks which are connected and arranged on the top end face of the leveling plate.
According to the technical scheme, the bottom plate is further provided with a leveling plate limiting structure which is used for limiting the side wall of the leveling plate and observing whether the leveling plate is leveled.
Further optimize technical scheme, leveling board limit structure is including setting up on the bottom plate and the leveling board stopper that contacts with the leveling board lateral wall, has seted up U type spout on the leveling board stopper, wears to be equipped with in the U type spout with leveling board threaded connection and along the connecting bolt that U type spout reciprocated at the leveling in-process.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses pass through the spacing setting of lapping surface flat ruler limit structure with the bottom of lapping surface flat ruler on levelling mechanism, and carry out centre gripping location effectively to edge of a knife shape ruler through fixture, and can swing according to the examination rule through driving edge of a knife shape ruler through rotary driving mechanism, make and need not people's handheld in the straightness accuracy verification process of edge of a knife shape ruler work edge, the influence of human factor has been avoided, calibration efficiency has been improved widely, the shake phenomenon can not appear in the verification process, can guarantee the depth of parallelism of lapping surface flat ruler and edge of a knife shape ruler effectively, the accuracy of examination has been improved.
The utility model discloses an at least three leveling knob will adjust the flat board setting on the bottom plate, can effectively guarantee the roughness of leveling board, abrasive surface flat ruler and edge of a knife shape ruler through the mode of three point leveling, has guaranteed the precision of examination.
The utility model discloses have certain interval between the bottom face of grip block and the top face of abrasive surface flat ruler, leave between grip block and the abrasive surface flat ruler promptly and be equipped with the detection clearance, the light of being convenient for can shine into from here, realizes the purpose of examination and determine.
The utility model discloses two grip blocks can realize the centre gripping through two pneumatic clamping jaws respectively and remove, and then carry out the centre gripping effectively with edge of a knife shape ruler.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of another perspective structure of the present invention;
FIG. 3 is a front view of the present invention;
fig. 4 is a top view of the present invention;
fig. 5 is a schematic structural view of the clamping mechanism of the present invention;
fig. 6 is a schematic structural diagram of the first driving turntable according to the present invention;
fig. 7 is a schematic structural diagram of the second driving turntable according to the present invention.
Wherein: 1. the device comprises a clamping mechanism 11, a pneumatic clamping jaw 12 and a clamping plate; 2. a grinding surface leveling ruler; 3. a base plate; 4. a leveling mechanism 41, a leveling plate 42 and a leveling knob; 5. a leveling plate limiting structure 51, a leveling plate limiting block 52 and a U-shaped sliding groove; 6. a grinding surface flat ruler limiting structure 61 and a grinding surface flat ruler limiting block; 7. positioning seats; 8. a knife-edge-shaped ruler; 9. rotary driving mechanism, 91, driving motor, 92, first drive carousel, 921, first drive axle, 922, first carousel, 93, second drive carousel, 931, second drive axle, 932, second carousel, 94, first connecting plate, 95, second connecting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A rotatable clamping and positioning device for detecting the straightness of a working edge of a knife-edge-shaped ruler is shown in a combined drawing from 1 to 7 and comprises a base plate 3, a positioning seat 7, a grinding surface flat ruler 2, a grinding surface flat ruler limiting structure 6, a leveling mechanism 4, a rotary driving mechanism 9 and a clamping mechanism 1.
The positioning seats 7 are arranged in two numbers and are vertically arranged on the bottom plate 3.
The grinding surface flat ruler 2 is arranged between the two positioning seats 7 and is used for supporting the knife edge-shaped straight ruler 8. The utility model provides an abrasive surface flat rule 2 adopts 500MM abrasive surface flat rule, as the etalon, and the working face plane degree is no longer than 0.5 mu m.
The bottom of the grinding surface flat ruler 2 is arranged on the leveling mechanism 4 in a limiting mode through the grinding surface flat ruler limiting structure 6, and the leveling mechanism 4 is used for adjusting the flatness of the grinding surface flat ruler 2.
Leveling mechanism 4 includes leveling board 41 through at least three leveling knob 42 setting on bottom plate 3, the utility model provides a leveling board 41 sets up on bottom plate 3 through three leveling knob 42 for leveling of leveling board 41 is more steady.
The grinding surface flat ruler limiting structure 6 comprises a plurality of pairs of grinding surface flat ruler limiting blocks 61 which are connected and arranged on the top end face of the leveling plate 41. The utility model discloses well be provided with two pairs of abrasive surface flat rule stoppers 61.
The rotation drive mechanism 9 includes a drive motor 91, a first drive turntable 92, and a second drive turntable 93.
The stiff end setting of driving motor 91 is on the right side positioning seat, and the drive axle head stretches out the right side positioning seat, driving motor 91 with right side positioning seat bearing connection. The driving motor 91 can drive the knife edge-shaped ruler 8 to incline 15 degrees left and right according to the verification rule. The utility model discloses well driving motor 91 adopts 57 leisai step motor, can control rotation angle effectively.
The first driving turntable 92 is fixedly connected to a driving shaft end of the driving motor 91. The first driving turntable 92 includes a first driving shaft 921 fixedly connected to a driving shaft end of the driving motor 91 and a first turntable 922 integrally connected to the first driving shaft 921.
The second driving turntable 93 is rotatably disposed on the left positioning seat and is coaxial with the first driving turntable 92. The second driving turntable 93 includes a second driving shaft 931 rotatably connected to the left positioning seat through a bearing, and a second turntable 932 integrally connected to the second driving shaft 931.
The clamping mechanism 1 is detachably arranged at the top ends of the opposite side walls of the positioning seat 7 through the rotary driving mechanism 9 and used for clamping and centering the knife-edge-shaped straight ruler 8 left and right.
The clamping mechanism 1 comprises two pneumatic clamping jaws 11, wherein the two pneumatic clamping jaws 11 are respectively and fixedly arranged on the side walls of the first driving turntable 92 and the second driving turntable 93 and are arranged on the same horizontal line. The pneumatic gripper on the right side is connected to a first turntable 922 via a first connecting plate 94, and the pneumatic gripper on the left side is connected to a second turntable 932 via a second connecting plate 95.
The pneumatic clamping jaw 11 is a common pneumatic finger in the prior art, and comprises an air cylinder and two parallel clamping jaws capable of being clamped in a centering manner under the action of the air cylinder, wherein the parallel clamping jaws are clamping jaw ends. The pneumatic clamping jaw 11 is connected with an air source through an air pipe, an electromagnetic valve is arranged on the air pipe, air supply for the pneumatic clamping jaw 11 is controlled through controlling the electromagnetic valve, and then opening and closing of the clamping jaw end are achieved.
And clamping plates 12 are detachably connected between the clamping jaw ends of two pneumatic clamping jaws 11 correspondingly arranged in the same horizontal line and are used for clamping and centering the knife-edge-shaped ruler 8 left and right.
A certain distance is reserved between the bottom end face of the clamping plate 12 and the top end face of the grinding surface flat ruler 2, namely a detection gap is reserved between the clamping plate 12 and the grinding surface flat ruler 2, and light can conveniently shine into the space from the position.
The bottom plate 3 is further provided with a leveling plate limiting structure 5 for limiting the side wall of the leveling plate 41 and observing whether the leveling plate 41 is leveled.
Leveling board limit structure 5 is including setting up on bottom plate 3 and the leveling board stopper 51 that contacts with the side wall of leveling board 41, has seted up U type spout 52 on the leveling board stopper 51, wears to be equipped with connecting bolt in the U type spout 52, and connecting bolt and leveling board 41 threaded connection just along the connecting bolt that U type spout 52 reciprocated at the leveling in-process. Whether the leveling plates 41 are leveled can be judged by observing whether the positions of the connecting bolts on the leveling plate limiting blocks 51 are on the same straight line.
The utility model discloses carry out centre gripping location process as follows at tool setting mouth of a knife shape ruler.
First, the grinding surface flat 2 needs to be leveled. The levelness of the leveling plate 41 is adjusted by turning the leveling knob 42. In the adjusting process, the leveling plate 41 drives the connecting bolts to move up and down along the U-shaped sliding grooves 52 of the leveling plate limiting blocks 51, and whether the leveling plate 41 is leveled can be judged by observing whether the positions of all the connecting bolts are on the same straight line.
When all attachment bolt positions are observed to be in alignment, the knife-edge 8 is then placed on the abrasive surface flat 2 between the two clamping plates 12.
Then, the distance between the two clamping plates 12 is adjusted through the pneumatic clamping jaws 11, and the knife edge-shaped straight ruler 8 is firmly clamped and centered.
Finally, light is irradiated between the working edge of the knife-edge-shaped ruler 8 and the grinding surface flat ruler 2, the first driving turntable 92 is driven to rotate through the driving motor 91, the clamping mechanism 1 and the knife-edge-shaped ruler 8 clamped and arranged in the clamping mechanism 1 are further driven to rotate, and the knife-edge-shaped ruler 8 to be detected swings back and forth 15 degrees by taking the working edge of the knife-edge-shaped ruler as an axis according to detection rules. Meanwhile, the size of the light-transmitting gap between the working edge of the knife edge-shaped ruler 8 and the working surface of the grinding surface flat ruler 2 is carefully observed.

Claims (7)

1. Rotatable formula centre gripping positioner is used in examination of edge shape ruler work edge straightness accuracy, its characterized in that: the grinding surface leveling mechanism comprises a base plate (3) and two positioning seats (7) vertically arranged on the base plate (3), a grinding surface leveling ruler (2) used for supporting a knife edge-shaped ruler (8) is arranged between the two positioning seats (7), and the bottom end of the grinding surface leveling ruler (2) is limited and arranged on a leveling mechanism (4) used for adjusting the flatness of the grinding surface leveling ruler (2) through a grinding surface leveling ruler limiting structure (6); the top ends of the opposite side walls of the two positioning seats (7) are detachably provided with clamping mechanisms (1) used for clamping and centering the knife edge-shaped ruler (8) left and right through a rotary driving mechanism (9).
2. The rotatable clamping and positioning device for straightness verification of the working edge of the knife-edge-shaped ruler as claimed in claim 1, wherein: the rotary driving mechanism (9) comprises a driving motor (91) with a fixed end arranged on the right side positioning seat and a driving shaft end extending out of the right side positioning seat, a first driving turntable (92) fixedly connected with the driving shaft end of the driving motor (91) and a second driving turntable (93) which is rotatably arranged on the left side positioning seat and is coaxial with the first driving turntable (92).
3. The rotatable clamping and positioning device for straightness verification of the working edge of the knife-edge-shaped ruler as claimed in claim 2, wherein: fixture (1) including fixed two pneumatic clamping jaw (11) that set up respectively on first drive carousel (92) and second drive carousel (93) lateral wall, can dismantle respectively between the clamping jaw end of two pneumatic clamping jaw (11) that set up with the water flat line and be connected with grip block (12) that are used for controlling centre gripping centering to notch shape ruler (8), have certain interval between the bottom face of grip block (12) and the top face of abrasive surface ruler (2).
4. The rotatable clamping and positioning device for straightness verification of the working edge of the knife-edge-shaped ruler as claimed in claim 1, wherein: the leveling mechanism (4) comprises a leveling plate (41) arranged on the base plate (3) through at least three leveling knobs (42).
5. The rotatable clamping and positioning device for straightness verification of the working edge of the knife-edge-shaped ruler as claimed in claim 4, wherein: the grinding surface flat ruler limiting structure (6) comprises a plurality of pairs of grinding surface flat ruler limiting blocks (61) which are connected and arranged on the top end face of the leveling plate (41).
6. The rotatable clamping and positioning device for straightness verification of the working edge of the knife-edge-shaped ruler as claimed in claim 4, wherein: the bottom plate (3) is further provided with a leveling plate limiting structure (5) which is used for limiting the side wall of the leveling plate (41) and can observe whether the leveling plate (41) is leveled.
7. The rotatable clamping and positioning device for straightness verification of the working edge of the knife-edge-shaped ruler as claimed in claim 6, wherein: leveling board limit structure (5) are including setting up leveling board stopper (51) that contacts on bottom plate (3) and with leveling board (41) lateral wall, have seted up U type spout (52) on leveling board stopper (51), wear to be equipped with in U type spout (52) with leveling board (41) threaded connection and at the leveling in-process along the connecting bolt that U type spout (52) reciprocated.
CN202020793356.6U 2020-05-13 2020-05-13 Rotatable clamping and positioning device for straightness detection of working edge of knife-edge-shaped ruler Active CN211717404U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020793356.6U CN211717404U (en) 2020-05-13 2020-05-13 Rotatable clamping and positioning device for straightness detection of working edge of knife-edge-shaped ruler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020793356.6U CN211717404U (en) 2020-05-13 2020-05-13 Rotatable clamping and positioning device for straightness detection of working edge of knife-edge-shaped ruler

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CN211717404U true CN211717404U (en) 2020-10-20

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