CN213136429U - Clamping device for repeatedly positioning cylindrical workpiece - Google Patents
Clamping device for repeatedly positioning cylindrical workpiece Download PDFInfo
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- CN213136429U CN213136429U CN202020944069.0U CN202020944069U CN213136429U CN 213136429 U CN213136429 U CN 213136429U CN 202020944069 U CN202020944069 U CN 202020944069U CN 213136429 U CN213136429 U CN 213136429U
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Abstract
The utility model relates to a clamping device for repeatedly positioning a cylindrical workpiece, which comprises a base, a rotating disk and a sliding block; the lower end part of the base is in limit fit with a measuring platform of a measuring instrument; three semicircular chutes are formed on the upper end surface of the base; three linear guide through holes are formed on the top surface of the rotating disc; the number of the sliding blocks is three, and the three sliding blocks are composed of an upper section and a lower section; the rotating disc is coaxially arranged at the upper end part of the base, the side surface of the rotating disc is in clearance fit with the corresponding part of the side surface of the base, the lower sections of the three sliding blocks are respectively inserted into the three semicircular sliding grooves, and the upper sections of the three sliding blocks are respectively inserted into the corresponding three linear guide through holes; the upper sections of the three sliding blocks extend out of the upper end of the rotating disk, so that three round ends positioned at the inner ends form positioning action surfaces contacted with the peripheral surface of the cylindrical workpiece, or the upper ends of the upper sections of the three sliding blocks are respectively provided with a threaded hole for installing a positioning block. The device has high positioning precision and can be suitable for positioning and clamping cylindrical workpieces with various diameters.
Description
Technical Field
The utility model belongs to the technical field of the cylinder work piece is measured, concretely relates to a clamping device for cylinder work piece repeated positioning.
Background
In present batch measurements, repeated positioning of cylindrical workpieces is of the utmost importance. The repeated positioning is firstly to ensure that the positioning position of the workpiece is consistent every time. In the prior art, V-shaped pliers are generally used for positioning a cylinder, or a three-jaw chuck is used, and the two modes take a clamping cylinder as a fixing mode. And in addition, the bottom surface of the workpiece is placed on a fixing table in an extrusion clamping mode by using bottom surface positioning, the side surface of the workpiece is extruded and fixed by using a V-shaped sheet, or the workpiece is longitudinally pressed by using a pressing sheet, particularly when a roundness meter or a cylindricity meter is used for measurement, the measured workpiece needs to be concentric with a precision axis of the instrument according to the measurement principle of the roundness meter or the cylindricity meter, and the fixing requirement on the concentric position is higher.
The existing positioning mode has the following defects: the fixing method using the V-shaped sheet and the pressing sheet has certain limitations, cannot meet the measurement requirement of complex cylinders, and has low repeated utilization rate when the cylinders with different sizes are fixed. The existing alignment mode of a roundness meter or a cylindricity meter is a manual observation method, the alignment efficiency is extremely low, and the condition that a measuring head collides with a measured piece is easy to occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a simple structure, positioning accuracy is high, can be applicable to the cylinder work piece location clamp of multiple diameter size tightly to can improve the clamping device that is used for cylinder work piece repeated positioning of measuring instrument measurement of efficiency and the application scope of instrument.
The utility model discloses a solve the technical scheme who above-mentioned technical problem took and be:
a clamping device for repeated positioning of a cylindrical workpiece, characterized in that: comprises a base, a rotating disk and a sliding block;
the whole base is of a cylindrical structure, and the lower end part of the base is in limit fit with a measuring platform of a measuring instrument; three semicircular chutes are formed in the upper end face of the base, the connecting lines of the central points of the two ends of each semicircular chute are arranged along the radial direction of the base, and the three semicircular chutes are uniformly distributed along the circumferential direction by taking the center of the base as an axis;
the rotating disc is of a buckle cover type disc structure, three linear guide through holes are formed in the top surface of the rotating disc, the three linear guide through holes are uniformly distributed along the circumferential direction by taking the center of the rotating disc as an axis, and the three linear guide through holes are arranged along the radial direction of the rotating disc;
the number of the sliding blocks is three, each of the three sliding blocks is composed of an upper section and a lower section, the lower section of each sliding block is a cylindrical section which is in inserted fit with the semicircular sliding chute, and the upper section of each sliding block is a round-end rectangular section which is in fit with the linear sliding chute;
the rotating disc is coaxially arranged at the upper end part of the base, the side surface of the rotating disc and the corresponding part of the side surface of the base form clearance fit, the three semicircular chutes correspond to the three linear guide through holes one by one, the lower sections of the three sliding blocks are respectively inserted into the three semicircular chutes in a clearance fit manner, and the upper sections of the three sliding blocks are respectively inserted into the corresponding three linear guide through holes in a manner that two rectangular sides are matched with two sides of the linear guide through holes; the upper sections of the three sliding blocks extend out of the upper end of the rotating disk, so that three round ends positioned at the inner ends form positioning action surfaces contacted with the peripheral surface of the cylindrical workpiece, or the upper ends of the upper sections of the three sliding blocks are respectively provided with a threaded hole for installing a positioning block.
Further: the lower end of the base is uniformly provided with three V-shaped positioning grooves along the circumferential direction, the three V-shaped positioning grooves are arranged along the radial direction of the base, the three V-shaped positioning grooves are in one-to-one correspondence with the three V-shaped grooves on the measuring platform from top to bottom, and the base is limited on the measuring platform of the measuring instrument along the circumferential direction through positioning round rods arranged in the three groups of V-shaped grooves corresponding to the three groups of V-shaped grooves from top to bottom.
Further: the base is composed of a fixed cylinder, a supporting cylinder and a working cylinder which are coaxially arranged from top to bottom in sequence; the diameter of the working cylinder is smaller than that of the fixed circumference body, and the diameter of the supporting cylinder is smaller than that of the working circumference body; three V type constant head tanks on the base set up in the lower extreme of fixed cylinder, and three semicircular chutes set up in the up end of work cylinder.
Further: the fit clearance of the side face of the rotating disc and the corresponding part of the side face of the base is as follows: 0.02 mm.
Further: the unilateral clearance of slider upper segment and semi-circular spout is 0.01mm, and the unilateral clearance of slider hypomere rectangle limit and linear type guiding through hole is 0.01 mm.
Further: two symmetrically set fastening screw holes are formed in the side face of the rotating disc, and the two fastening screw holes are inclined holes.
The utility model has the advantages and positive effect:
1. the clamping device is formed by connecting a base, a rotating disk and three sliding blocks, and has few components and simple structure; the three sliding blocks can be driven to synchronously move inwards and outwards by rotating the rotating disk, so that repeated positioning clamping and positioning tensioning of the cylindrical workpiece are realized, the consistency of multiple positioning positions is ensured, and the positioning precision is high.
2. The clamping device can change the enveloping inner diameter and the enveloping outer diameter of the three sliding blocks by rotating the rotating disk to different positions, realize the positioning and clamping of cylindrical workpieces with various diameter sizes, and improve the application range of the measuring instrument.
3. The clamping device has the advantages of convenient positioning and high positioning speed, and improves the measurement efficiency of the measuring instrument.
Drawings
Fig. 1 is a perspective assembly view of the present invention;
fig. 2 is an exploded perspective view of the present invention;
fig. 3 is a schematic perspective view of the base of the present invention;
fig. 4 is a top view of the base of the present invention;
fig. 5 is a bottom view of the base of the present invention;
FIG. 6 is a schematic perspective view of a rotary plate according to the present invention;
figure 7 is a cross-sectional view of a rotating disk of the present invention;
fig. 8 is a schematic perspective view of the slider of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments, which are illustrative only and not limiting, and the scope of the present invention should not be limited thereby.
A clamping device for use in the repositioning of a cylindrical workpiece, see fig. 1-8: comprising a base 1, a rotating disk 2 and a slider 3.
Referring to fig. 1-5, the base is a cylinder structure, which can be an integral cylinder structure or a segmented cylinder structure, the utility model discloses in, preferred structure is: the base is composed of a fixed cylinder 1.3, a supporting cylinder 1.2 and a working cylinder 1.1 which are coaxially arranged from top to bottom in sequence; the diameter of the working cylinder is smaller than that of the fixed circumference body, and the diameter of the supporting cylinder is smaller than that of the working circumference body.
The lower end of the fixed cylinder is further provided with three V-shaped positioning grooves 1.3.1 which are uniformly distributed along the circumferential direction, the three V-shaped positioning grooves are arranged along the radial direction of the base, the three V-shaped positioning grooves are in one-to-one correspondence with the three V-shaped grooves on the measuring platform from top to bottom, and the base is limited on the measuring platform of the measuring instrument along the circumferential direction through positioning round rods arranged in the three groups of V-shaped grooves which correspond to each other from top to bottom.
Three semicircular chutes 1.1.1 are formed in the upper end face of the working circumferential body, connecting lines of central points of two ends of each semicircular chute are arranged along the radial direction of the base, and the three semicircular chutes are uniformly distributed along the circumferential direction by taking the center of the base as an axis.
The rotating disc is in a buckle cover type disc structure, three linear guide through holes 2.1 are formed in the top surface of the rotating disc, the three linear guide through holes are uniformly distributed along the circumferential direction by taking the center of the rotating disc as an axis, and the three linear guide through holes are arranged along the radial direction of the rotating disc.
Referring to fig. 1, 2 and 8, three sliding blocks are provided, each of the three sliding blocks is composed of an upper section and a lower section, the lower section 3.2 of the sliding block is a cylindrical section, the diameter of the cylindrical section is matched with the groove width of the semicircular sliding groove, and the upper section 3.1 of the sliding block is a round-end rectangular section with two semi-cylindrical ends and a rectangular block-shaped middle part; the width of the round end rectangular section is matched with the hole width of the linear guide through hole, and the two round ends of the round end rectangular section are matched with the two round surface sizes of the linear guide through hole.
The base mainly plays a role in fixing; the rotating disc has a rotating function, and the upper end of the rotating disc is used for placing workpieces; three slider connection base and rotary disk play the positioning and clamping effect to the work piece, and is specific:
the rotary disc is coaxially arranged at the upper end part of the base, the side surface of the rotary disc is in clearance fit with the corresponding part of the side surface of the base, and the fit clearance is preferably 0.02mm, so that the rotation of the rotary disc can be ensured, and the positioning precision of the device is ensured. The three semicircular sliding grooves correspond to the three linear guide through holes one by one, the lower sections of the three sliding blocks are respectively inserted into the three semicircular sliding grooves in a clearance fit mode, and the unilateral clearance is preferably 0.01 mm; the upper sections of the three sliding blocks are respectively inserted into the three corresponding linear guide through holes in a mode that two rectangular sides are matched with two sides of the linear guide through holes, and the unilateral clearance is preferably 0.01 mm. The upper ends of the three sliding blocks extend out of the upper end of the rotating disk, so that three round ends positioned at the inner ends form a positioning action surface contacted with the peripheral surface of the cylindrical workpiece, or the upper ends of the upper sections of the three sliding blocks are respectively provided with a threaded hole 3.1.1 for installing a positioning block or other tools through screws to position and clamp the workpiece.
This clamping device is rotatory after target in place at the rotary disk, and the rotary disk can remain fixed, can realize that the location to the work piece is tight, nevertheless for avoiding bumping the rotary disk at the in-process mistake that detects and lead to the rotary disk to rotate, further: two symmetrically set fastening screw holes 2.2 are formed in the side face of the rotating disk, the two screw holes are inclined holes, the axial direction of each inclined hole and the tangent line of the outer diameter of the rotating disk form a certain included angle, and the included angle is generally 45 degrees. The rotating disc is positioned in the tightening screw hole by screwing the screw, so that the rotating disc is prevented from being touched by mistake and rotating. Specifically, the screw is screwed in one of the two screw holes, the rotating direction of the rotating disc during operation needs to be determined, and the fastening screw with the advancing direction opposite to the rotating direction of the rotating disc during screwing is used for screwing to enable the fastening screw to be connected with the base so as to play a role in jacking and fixing.
The mounting method of the clamping device comprises the following steps: the rotary disk is firstly buckled on the base, the rotary disk is guaranteed to rotate on the base, and then the sliding block is inserted into a space formed by the sliding groove in the base and the guide through hole in the rotary disk, so that installation can be achieved.
The use method of the clamping device comprises the following steps: fixing the base, and installing the base under the condition that a positioning block or other tools need to be installed; then the rotating disk is rotated, so that the three sliding blocks can slide in the three linear guide through holes of the rotating disk in an equidistance manner, and the clamping excircle or the supporting inner hole is determined according to the appearance of the workpiece to be measured, thereby playing a role in fixing the workpiece.
Although the embodiments and figures of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore, the scope of the invention is not limited to the disclosure of the embodiments and drawings.
Claims (6)
1. A clamping device for repeated positioning of a cylindrical workpiece, characterized in that: comprises a base, a rotating disk and a sliding block;
the whole base is of a cylindrical structure, and the lower end part of the base is in limit fit with a measuring platform of a measuring instrument; three semicircular chutes are formed in the upper end face of the base, the connecting lines of the central points of the two ends of each semicircular chute are arranged along the radial direction of the base, and the three semicircular chutes are uniformly distributed along the circumferential direction by taking the center of the base as an axis;
the rotating disc is of a buckle cover type disc structure, three linear guide through holes are formed in the top surface of the rotating disc, the three linear guide through holes are uniformly distributed along the circumferential direction by taking the center of the rotating disc as an axis, and the three linear guide through holes are arranged along the radial direction of the rotating disc;
the number of the sliding blocks is three, each of the three sliding blocks is composed of an upper section and a lower section, the lower section of each sliding block is a cylindrical section which is in inserted fit with the semicircular sliding chute, and the upper section of each sliding block is a round-end rectangular section which is in fit with the linear sliding chute;
the rotating disc is coaxially arranged at the upper end part of the base, the side surface of the rotating disc and the corresponding part of the side surface of the base form clearance fit, the three semicircular chutes correspond to the three linear guide through holes one by one, the lower sections of the three sliding blocks are respectively inserted into the three semicircular chutes in a clearance fit manner, and the upper sections of the three sliding blocks are respectively inserted into the corresponding three linear guide through holes in a manner that two rectangular sides are matched with two sides of the linear guide through holes; the upper sections of the three sliding blocks extend out of the upper end of the rotating disk, so that three round ends positioned at the inner ends form positioning action surfaces contacted with the peripheral surface of the cylindrical workpiece, or the upper ends of the upper sections of the three sliding blocks are respectively provided with a threaded hole for installing a positioning block.
2. The clamping device for cylindrical workpiece repositioning according to claim 1, wherein: the lower end of the base is uniformly provided with three V-shaped positioning grooves along the circumferential direction, the three V-shaped positioning grooves are arranged along the radial direction of the base, the three V-shaped positioning grooves are in one-to-one correspondence with the three V-shaped grooves on the measuring platform from top to bottom, and the base is limited on the measuring platform of the measuring instrument along the circumferential direction through positioning round rods arranged in the three groups of V-shaped grooves corresponding to the three groups of V-shaped grooves from top to bottom.
3. The clamping device for cylindrical workpiece repositioning according to claim 1, wherein: the base is composed of a fixed cylinder, a supporting cylinder and a working cylinder which are coaxially arranged from top to bottom in sequence; the diameter of the working cylinder is smaller than that of the fixed circumference body, and the diameter of the supporting cylinder is smaller than that of the working circumference body; three V type constant head tanks on the base set up in the lower extreme of fixed cylinder, and three semicircular chutes set up in the up end of work cylinder.
4. The clamping device for cylindrical workpiece repositioning according to claim 1, wherein: the fit clearance of the side face of the rotating disc and the corresponding part of the side face of the base is as follows: 0.02 mm.
5. The clamping device for cylindrical workpiece repositioning according to claim 1, wherein: the unilateral clearance of slider upper segment and semi-circular spout is 0.01mm, and the unilateral clearance of slider hypomere rectangle limit and linear type guiding through hole is 0.01 mm.
6. The clamping device for cylindrical workpiece repositioning according to claim 1, wherein: two symmetrically set fastening screw holes are formed in the side face of the rotating disc, and the two fastening screw holes are inclined holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020944069.0U CN213136429U (en) | 2020-05-29 | 2020-05-29 | Clamping device for repeatedly positioning cylindrical workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020944069.0U CN213136429U (en) | 2020-05-29 | 2020-05-29 | Clamping device for repeatedly positioning cylindrical workpiece |
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| Publication Number | Publication Date |
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| CN213136429U true CN213136429U (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020944069.0U Active CN213136429U (en) | 2020-05-29 | 2020-05-29 | Clamping device for repeatedly positioning cylindrical workpiece |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147641A (en) * | 2021-12-06 | 2022-03-08 | 苏州赛腾精密电子股份有限公司 | Arc positioning and clamping device |
| CN114703971A (en) * | 2022-04-02 | 2022-07-05 | 山东滕建建设集团有限公司 | High-efficient assembled building element |
| CN117563694A (en) * | 2023-11-15 | 2024-02-20 | 齐鲁工业大学(山东省科学院) | A self-centering clamping and handling tool for reactor lining and its use method |
-
2020
- 2020-05-29 CN CN202020944069.0U patent/CN213136429U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147641A (en) * | 2021-12-06 | 2022-03-08 | 苏州赛腾精密电子股份有限公司 | Arc positioning and clamping device |
| CN114703971A (en) * | 2022-04-02 | 2022-07-05 | 山东滕建建设集团有限公司 | High-efficient assembled building element |
| CN114703971B (en) * | 2022-04-02 | 2024-04-26 | 山东滕建建设集团有限公司 | High-efficient assembled building element |
| CN117563694A (en) * | 2023-11-15 | 2024-02-20 | 齐鲁工业大学(山东省科学院) | A self-centering clamping and handling tool for reactor lining and its use method |
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