CN213164140U - Clamp for boring arc surface - Google Patents

Clamp for boring arc surface Download PDF

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Publication number
CN213164140U
CN213164140U CN202021685391.2U CN202021685391U CN213164140U CN 213164140 U CN213164140 U CN 213164140U CN 202021685391 U CN202021685391 U CN 202021685391U CN 213164140 U CN213164140 U CN 213164140U
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China
Prior art keywords
clamp
plate
shaped body
stud
workpiece
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Active
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CN202021685391.2U
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Chinese (zh)
Inventor
王连宏
景红
李峥
赵志勇
张雪冬
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Shanxi Diesel Engine Industries Co Ltd
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Shanxi Diesel Engine Industries Co Ltd
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Priority to CN202021685391.2U priority Critical patent/CN213164140U/en
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Abstract

The utility model relates to a boring clamp of an arc surface, which comprises a plate-shaped body, wherein the plate-shaped body is connected with a workbench of a machine tool; at least one set of clamp is arranged on the plate-shaped body, and the clamp clamps a workpiece; the clamp comprises a pressing plate, an adjusting device and a first connecting piece; the first connecting piece and the adjusting device are respectively arranged on the plate-shaped body, and the pressing plate is also arranged on the first connecting piece; the adjusting device is positioned below the pressing plate, the adjusting device adjusts the distance between the pressing plate and the plate-shaped body, and the pressing plate is pressed on a workpiece to fix the position of the workpiece; the utility model provides the high production efficiency of curve piece boring arc surface makes its size precision and roughness and stability of quality all obtain fine assurance moreover. The production efficiency is greatly improved on the original basis, the manufacturing cost and the labor intensity of operators are obviously reduced, and the problems of the quality and the efficiency of batch production and processing are thoroughly solved.

Description

Clamp for boring arc surface
Technical Field
The utility model relates to an anchor clamps are used in boring of arc surface.
Background
The requirements of dimensional accuracy and shape accuracy of curve blocks (shown in figure 1) of fuel injection systems of certain types of diesel engines are high, and particularly the requirements of processing the diameter of a circular arcAnd the coordinate size from the two positioning pin holes to the center of the circular arc is 79.6 +/-0.05, which is difficult to ensure;
in the prior art, four screws are uniformly distributed and fixed on a mounting disc of a grinding fixture, then two positioning pin holes of a curve block are used for orientation and positioning of a bottom plane, then the grinding fixture is connected with a machine tool spindle taper hole, and the arc surface grinding of the curve block is completed by aligning the end face of the mounting disc of the grinding fixture and the positioning pins;
however, the above technical solutions have the following technical drawbacks:
(1) the spindle center of the machine tool needs to be detached when the clamp is installed each time, parts need to be repeatedly aligned and adjusted after the clamp is installed in a spindle hole of the machine tool, the detaching process is particularly complicated and complicated, the labor intensity is high, and the machining efficiency is low.
(2) Because the diameter of the positioning pin is small and the positioning pin is asymmetrically arranged, the vibration generated during the intermittent grinding of the arc of the part easily causes the micro-deviation of the grinding fixture, the curve grinding precision of the part is out of tolerance, the part needs to be repeatedly detected and the fixture needs to be repeatedly adjusted, the auxiliary time is long, and the stability of the processing quality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides an alignment, adjustment are convenient, can not produce the anchor clamps of vibrations phenomenon during interrupted grinding, realize the technical scheme of above-mentioned purpose as follows:
a clamp for boring an arc surface comprises a plate-shaped body, wherein the plate-shaped body is connected with a workbench of a machine tool; at least one set of clamp is arranged on the plate-shaped body, and the clamp clamps a workpiece;
the clamp comprises a pressing plate, an adjusting device and a first connecting piece; the first connecting piece and the adjusting device are respectively arranged on the plate-shaped body, and the pressing plate is also arranged on the first connecting piece; the adjusting device is located below the pressing plate, the adjusting device adjusts the distance between the pressing plate and the plate-shaped body, and the pressing plate presses on the workpiece to fix the position of the workpiece.
Optionally, the first connector comprises a first stud, a first nut and a second nut; the first nut and the second nut are respectively screwed on the stud; the first stud is in threaded connection with the plate-shaped body, and the first nut locks the connection between the first stud and the plate-shaped body; the first stud and the pressure plate are in threaded connection or plug connection, and the second nut locks the workpiece below the pressure plate.
Optionally, the adjusting device comprises a second stud and a third nut, and the third nut is screwed with the second stud; the plate-shaped body is provided with a threaded hole, the second stud is in threaded connection with the threaded hole, the second stud can ascend or descend along the threaded hole, and the third nut locks the position between the second stud and the plate-shaped body.
Optionally, the bottom of the pressure plate is further provided with a jack, and the top of the second stud can be inserted into the jack in a matching manner.
Optionally, a top plate is arranged below the top of the second stud, and after the top of the second stud is inserted into the socket, the top plate can be attached to the bottom surface of the pressing plate.
Optionally, two sets of fixtures are arranged on the plate-shaped body, the fixtures are respectively a first fixture and a second fixture, the centers of the workpieces clamped by each set of fixtures are connected on a straight line, wherein a first pin hole is formed in the bottom of the workpiece in the first fixture, a first pin hole is also formed in the plate-shaped body at a position corresponding to the first pin hole, and a cylindrical pin is installed in the first pin hole;
and a second pin hole is formed in the bottom of the workpiece in the second clamp, a second pin hole is also formed in the plate-shaped body at a position corresponding to the second pin hole, and a diamond-shaped pin is installed in the second pin hole.
Optionally, four sets of clamps are arranged on the plate-shaped body, namely a first clamp, a second clamp, a third clamp and a fourth clamp; cylindrical pins are used for positioning in the workpieces clamped by the first clamp and the third clamp, and diamond-shaped pins are used for positioning in the workpieces clamped by the second clamp and the fourth clamp; and the connecting line of the workpieces in the first clamp and the second clamp is crossed with the connecting line of the workpieces in the third clamp and the fourth clamp to form a cross-shaped structure.
The utility model provides the high production efficiency of curve piece boring arc surface makes its size precision and roughness and stability of quality all obtain fine assurance moreover. The production efficiency is greatly improved on the original basis, the manufacturing cost and the labor intensity of operators are obviously reduced, and the problems of the quality and the efficiency of batch production and processing are thoroughly solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a curvilinear block size;
FIG. 2 is a general schematic view of the present invention;
FIG. 3 is a schematic view taken along the line A-A of FIG. 2;
description of the figures: the clamp comprises a plate-shaped body 1, a workpiece 2, a pressure plate 3, an adjusting device 4, a second stud 41, a third nut 42, a handle 43, a first connecting piece 5, a first stud 51, a first nut 52, a second nut 53, a cylindrical pin 6, a diamond-shaped pin 7, a first clamp a and a second clamp b;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. At least one embodiment of the utility model provides the following technical scheme:
in fig. 2-3, a circular arc surface boring fixture comprises a plate-shaped body 1, wherein the plate-shaped body 1 is connected with a workbench of a machine tool; the plate-shaped body 1 is provided with a wide plane, the bottom of the plate-shaped body is directly placed on the working platform, the time for repeatedly aligning and adjusting the clamp in the prior art is reduced, and the production efficiency is obviously improved.
The clamp is used for clamping a workpiece 2 and comprises a pressing plate 3, an adjusting device 4 and a first connecting piece 5; the first connecting piece 5 and the adjusting device 4 are respectively installed on the plate-shaped body 1, meanwhile, the pressing plate 3 is also installed on the first connecting piece 5, the adjusting device 4 is located below the pressing plate 3, the adjusting device 4 adjusts the distance between the pressing plate 3 and the plate-shaped body 1, the workpiece 2 is placed between the plate-shaped body 1 and the pressing plate 3, the pressing plate 3 applies downward force to press the workpiece 2, and the workpiece 2 is prevented from being shifted in position in the machining process;
as an option, the first connecting member 5 comprises a first stud 51, a first nut 52, a second nut 53; a first nut 52 and a second nut 53 screwed to the first stud 51, respectively; the first stud 51 is screwed with the plate-shaped body 1, and after the first stud 51 is screwed with the plate-shaped body 1, the first stud 51 and the plate-shaped body 1 are locked by using the first nut 52, so that the first stud 51 and the plate-shaped body 1 are prevented from loosening.
The pressure plate 3 is also in threaded connection with the first stud 51, and after the position of the workpiece 2 is adjusted, the second nut 53 is locked above the pressure plate 3 to further fix the position of the workpiece 2;
as an option, the adjusting device 4 comprises a second stud 41 and a third nut 42, and the third nut 42 is screwed with the second stud 41; the plate-shaped body 1 is provided with a threaded hole, the second stud 41 is in threaded connection with the threaded hole, and the third nut 42 locks the connection between the second stud 41 and the plate-shaped body 1 to prevent the second stud 41 and the plate-shaped body 1 from loosening; the second studs 41 can ascend or descend along the threaded holes, and when the second studs 41 ascend, the distance between the pressing plate 3 and the plate-shaped body 1 can be adjusted to be large, so that the pressing plate is suitable for more workpieces 2 with different heights.
As a preferable option, the bottom of the pressing plate 3 is further provided with an insertion hole, the insertion hole is a blind hole, the top of the second stud 41 can be inserted into the insertion hole in a matching manner, and the insertion hole is configured to provide a positioning basis for the second stud 41, so that the second stud 41 is prevented from being separated from the pressing plate 3.
Preferably, the top of the second stud 41 is arranged to be a semicircular structure, the jack is also a semicircular structure, and the radius of the semicircular structure at the top of the second stud 41 is consistent with that of the jack, so that after the top of the second stud 41 is inserted into the jack, the jack is arranged to form a limiting structure, and the pressing plate 3 and the second stud 41 are prevented from loosening;
as a preferable option, a top plate 43 is arranged below the top of the second stud 41, and after the second stud 41 is inserted into the jack, the plane of the top plate 43 is attached to the bottom of the pressing plate 3, so that the area of the second stud 41 supported against the pressing plate 3 is increased, and the combination between the two is more stable;
as a preferred option, the middle of said second stud 41 is provided with a handle 43 facilitating turning the second stud.
The adjusting support 4 is of a structure capable of adjusting the height, and the workpiece is pressed under the parallel state of the pressing plate 3 by adjusting the adjusting support 4, so that the balanced fastening state under the maximum pressing force is realized, the workpiece cannot be displaced due to the influence of cutting force, and the processing precision of the workpiece curve is ensured;
in the utility model, a plurality of sets of clamps can be arranged on the plate-shaped body 1, and the arrangement of the clamps needs to be symmetrically arranged; when two sets of clamps are arranged on the plate-shaped body 1, the workpiece 2 is fixed as follows:
for convenience of description, the two sets of clamps are respectively called a first clamp a and a second clamp b, the centers of the workpieces clamped by each set of clamps are connected on a straight line, and the centers of the connecting lines are also superposed with the center of the plate-shaped body 1; the bottom of the workpiece 2 in the first clamp a is provided with a first pin hole, the position corresponding to the first pin hole and the plate-shaped body 1 are also provided with the first pin hole, a cylindrical pin 7 is arranged in the first pin hole, and the cylindrical pin further stabilizes the workpiece 2 so as to avoid vibration and offset of the workpiece 2 in the machining process;
the bottom of the workpiece 2 in the second clamp b is provided with a second pin hole, the position corresponding to the second pin hole is also provided with a second pin hole on the plate-shaped body 1, a diamond-shaped pin 7 is arranged in the second pin hole, and the purpose of positioning by using the diamond-shaped pin 7 is to finely adjust the workpiece 2, so that the workpiece center connecting line in the first clamp a and the second clamp b is positioned at the center of the plate-shaped body 1.
When four sets of clamps are arranged on the plate-shaped body 1, the clamps are respectively a first clamp a, a second clamp b, a third clamp c and a fourth clamp d; the workpiece 2 clamped by the first clamp a and the third clamp c is positioned by using a cylindrical pin 6, and the workpiece 2 clamped by the second clamp b and the fourth clamp d is positioned by using a diamond-shaped pin 7; the connecting line of the workpieces 2 in the first clamp a and the second clamp b and the connecting line of the workpieces 2 in the third clamp c and the fourth clamp d are crossed to form a cross-shaped structure, and four sets of clamps are distributed on one circumference; thus, four sets of workpieces 2 can be machined in one machining process.
Four stations for clamping parts are evenly arranged on the circumference of the plate-shaped body to form a concentric circle, the clamp is quickly and conveniently aligned for the first time, the purpose of simultaneously installing the four parts and boring a curve at one time is realized, and the machining efficiency is obviously improved;
the utility model discloses in, the symmetrical arrangement of two locating holes (first pinhole and second pinhole promptly), solved because the location is less and asymmetrical arrangement leads to the atress uneven and produce the problem of trace skew, eliminated the auxiliary time who detects the part repeatedly and adjust anchor clamps repeatedly, improved processingquality's stability.
The installation process of the device is described as follows:
the fixture is installed on a machine tool workbench and fixed, four curve blocks, namely a workpiece 2 is oriented and positioned on the bottom plane through a cylindrical pin 6 and a diamond pin 7, a pressing plate 3 is placed on the curve blocks, an adjusting support 4 is adjusted to enable the pressing plate 3 to be parallel to the positioning plane, then a third nut 42 is used for screwing and fixing a second stud 4, and a second nut 53 on a first screw 51 is used for pressing and fixing the pressing plate 3 on the curve blocks. When a first batch of workpieces are machined, the boring machining of the arc surfaces of the curve blocks can be completed only by aligning the central coordinates of a concentric circle formed by the four curve blocks, and no adjustment of a clamp is needed in the subsequent machining process, so that the purposes of quick clamping and positioning and high-efficiency and high-quality boring curve are realized.
The utility model discloses utilize anchor clamps balanced arrangement on the circumference the station of four clamping parts, realized four work pieces of one-time installation simultaneously the curved purpose of boring, and the clamping work piece is quick, convenient operation, machining efficiency is showing and is improving. In addition, the boring fixture is horizontally arranged on a machine tool, so that the machining error caused by workpiece micro-offset due to fixture gravity and vibration in the prior art is avoided, and the curve machining precision and the quality stability are effectively ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the embodiments of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the scope of the embodiments of the present invention.

Claims (7)

1. The utility model provides a circular arc face's anchor clamps for boring which characterized in that: the machine tool comprises a plate-shaped body, wherein the plate-shaped body is connected with a workbench of the machine tool; at least one set of clamp is arranged on the plate-shaped body, and the clamp clamps a workpiece;
the clamp comprises a pressing plate, an adjusting device and a first connecting piece; the first connecting piece and the adjusting device are respectively arranged on the plate-shaped body, and the pressing plate is also arranged on the first connecting piece; the adjusting device is located below the pressing plate, the adjusting device adjusts the distance between the pressing plate and the plate-shaped body, and the pressing plate presses on the workpiece to fix the position of the workpiece.
2. The circular arc surface boring jig according to claim 1, characterized in that: the first connecting piece comprises a first stud, a first nut and a second nut; the first nut and the second nut are respectively screwed on the stud; the first stud is in threaded connection with the plate-shaped body, and the first nut locks the connection between the first stud and the plate-shaped body; the first stud and the pressure plate are in threaded connection or plug connection, and the second nut locks the workpiece below the pressure plate.
3. The circular arc surface boring jig according to claim 1, characterized in that: the adjusting device comprises a second stud and a third nut, and the third nut is screwed with the second stud; the plate-shaped body is provided with a threaded hole, the second stud is in threaded connection with the threaded hole, the second stud can ascend or descend along the threaded hole, and the third nut locks the position between the second stud and the plate-shaped body.
4. The circular arc surface boring jig according to claim 3, characterized in that: the bottom of the pressing plate is further provided with a jack, and the top of the second stud can be inserted into the jack in a matching mode.
5. The circular arc surface boring jig according to claim 4, characterized in that: and a top plate is arranged below the top of the second stud, and after the top of the second stud is inserted into the jack, the top plate can be attached to the bottom surface of the pressing plate.
6. The circular arc surface boring jig according to claim 1, characterized in that: the plate-shaped body is provided with two sets of clamps which are respectively a first clamp and a second clamp, the central connecting line of the workpiece clamped by each set of clamps is on the same straight line, wherein the bottom of the workpiece in the first clamp is provided with a first pin hole, the position corresponding to the first pin hole is also provided with a first pin hole on the plate-shaped body, and a cylindrical pin is arranged in the first pin hole;
and a second pin hole is formed in the bottom of the workpiece in the second clamp, a second pin hole is also formed in the plate-shaped body at a position corresponding to the second pin hole, and a diamond-shaped pin is installed in the second pin hole.
7. The circular arc surface boring jig according to claim 6, characterized in that: four sets of clamps are arranged on the plate-shaped body, namely a first clamp, a second clamp, a third clamp and a fourth clamp; cylindrical pins are used for positioning in the workpieces clamped by the first clamp and the third clamp, and diamond-shaped pins are used for positioning in the workpieces clamped by the second clamp and the fourth clamp; and the connecting line of the workpieces in the first clamp and the second clamp is crossed with the connecting line of the workpieces in the third clamp and the fourth clamp to form a cross-shaped structure.
CN202021685391.2U 2020-08-13 2020-08-13 Clamp for boring arc surface Active CN213164140U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021685391.2U CN213164140U (en) 2020-08-13 2020-08-13 Clamp for boring arc surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021685391.2U CN213164140U (en) 2020-08-13 2020-08-13 Clamp for boring arc surface

Publications (1)

Publication Number Publication Date
CN213164140U true CN213164140U (en) 2021-05-11

Family

ID=75801103

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021685391.2U Active CN213164140U (en) 2020-08-13 2020-08-13 Clamp for boring arc surface

Country Status (1)

Country Link
CN (1) CN213164140U (en)

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