CN213438676U - Aligning clamp for grinding inner hole - Google Patents

Aligning clamp for grinding inner hole Download PDF

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Publication number
CN213438676U
CN213438676U CN202022462506.8U CN202022462506U CN213438676U CN 213438676 U CN213438676 U CN 213438676U CN 202022462506 U CN202022462506 U CN 202022462506U CN 213438676 U CN213438676 U CN 213438676U
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China
Prior art keywords
clamp
anchor clamps
workpiece
grinding
inner hole
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CN202022462506.8U
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Chinese (zh)
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秦国军
曾斌
潘财盛
张华杰
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Suzhou Yilaierte Machinery Co ltd
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Suzhou Yilaierte Machinery Co ltd
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Abstract

The utility model relates to an aligning fixture for grinding hole, including the anchor clamps body, position sleeve, fastening screw, clamp plate and locking screw, anchor clamps body one end is used for being connected with the lathe main shaft, and the other end is used for fixed work piece, and the work piece is placed on the anchor clamps body, and the work piece is pushed down through the clamp plate, fixes a position through the position sleeve simultaneously, and fastening screw is used for fixing the position sleeve on stating the anchor clamps body, and locking screw is used for locking the clamp plate on the anchor clamps body. The utility model discloses the anchor clamps body is connected with the lathe main shaft through three-jaw chuck or four-jaw chuck, then installs two position sleeves on pressing from both sides the clamp body, fixes on the anchor clamps body with two position sleeves of fastening screw dress simultaneously. The two positioning sleeves are stepped, so that the maximum outer diameter of a workpiece is avoided, positioning by using a reference excircle is realized, in order to ensure the verticality of a grinding hole and the inner end surface of the workpiece, the inner end surface of the workpiece is tightly attached to the clamp body by matching the pressing plate and the locking screw, and positioning and clamping are realized at one time.

Description

Aligning clamp for grinding inner hole
Technical Field
The utility model belongs to the technical field of anchor clamps, especially, relate to an aligning anchor clamps for grinding hole.
Background
At present, when an inner hole is ground for cylindrical products with steps on the outer circle, a three-jaw chuck or a four-jaw chuck is mostly adopted for clamping, then clamping and positioning during inner circle machining are realized through meter making and alignment, the three-jaw chuck needs to be padded with copper sheets each time, the operation is troublesome, and the experience requirement is high; the four-jaw chuck is still low in adjustment efficiency, is not suitable for large-scale stable production, and has the verticality requirement, so that the inner end face of the product is required to be tightly attached to the clamp face, and the operation is difficult during aligning.
Chinese patent CN211760301U discloses a special fixture for grinding an inner hole of a valve sleeve of a steering gear box, which comprises an elastic chuck, a plurality of jaw assemblies arranged on the elastic chuck, and a driving assembly for driving the elastic chuck to deform; the driving assembly comprises a mandrel and a top block for driving the mandrel to move circumferentially; the ejector block is provided with a first inclined surface, and the mandrel is provided with a second inclined surface opposite to the first inclined surface, so that the ejector block can be driven to drive the mandrel to move axially; the mandrel and the elastic chuck are coaxially arranged, and the mandrel can drive the elastic chuck to deform or reset along the axial direction so as to enable the plurality of jaw assemblies to synchronously open or contract. However, the clamp is complex in structure arrangement, comprises a plurality of jaw assemblies and a driving assembly for driving the elastic chuck to deform, and is high in manufacturing cost and inconvenient to use and operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a self-aligning anchor clamps for grinding hole in order to simplify the operation.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides an aligning anchor clamps for grinding hole, including the anchor clamps body, position sleeve, fastening screw, clamp plate and locking screw, anchor clamps body one end is used for being connected with the lathe main shaft, and the other end is used for fixed work piece, the work piece is placed on the anchor clamps body, the work piece is pushed down through the clamp plate, fixes a position through the position sleeve simultaneously, fastening screw is used for fixing the position sleeve on the anchor clamps body, locking screw is used for locking the clamp plate on the anchor clamps body.
In an embodiment of the present invention, the pressing plate is provided with two pressing plates, which are respectively located at two radial ends of the workpiece.
The utility model discloses an in the embodiment, be equipped with two locking screw holes that are used for locking screw to connect on the anchor clamps body.
In an embodiment of the present invention, the two positioning sleeves are respectively located on two sides of one of the pressing plates.
In an embodiment of the present invention, the clamp body is provided with two fastening screw holes for fastening the screw.
The utility model discloses an in the embodiment, the lower extreme of work piece is step-like structure, the one end pressure of clamp plate is on the step of work piece, and the other end directly presses on anchor clamps body surface.
The utility model discloses an in the embodiment, the lower extreme of work piece is step-like structure, the lower extreme of position sleeve is step-like structure, the mid portion of position sleeve lower extreme directly presses on the anchor clamps body surface, and the marginal portion presses on the step of work piece.
In one embodiment of the present invention, the clamp body is connected to the machine tool spindle through a three-jaw chuck or a four-jaw chuck.
In one embodiment of the present invention, the clamp body is disposed coaxially with the workpiece.
In an embodiment of the present invention, the clamp body is a hollow structure with a through hole in the middle.
In one embodiment of the present invention, the clamp body is made of medium carbon steel and then is finely ground.
Adopt the utility model discloses an anchor clamps can select the position sleeve of equidimension not according to the big or small change of work piece excircle, fixes on the anchor clamps body with fastening screw. After the workpiece is placed in place in the clamp, the end face of the workpiece is tightly attached to the end face of the clamp through the pressing plate and the locking screw, so that the requirement on perpendicularity is met.
The utility model discloses a theory of operation does:
the utility model discloses the anchor clamps body is connected with the lathe main shaft through three-jaw chuck or four-jaw chuck, then installs two position sleeves on pressing from both sides the clamp body, fixes on the anchor clamps body with two position sleeves of fastening screw dress simultaneously. The two positioning sleeves are stepped, so that the maximum outer diameter of a workpiece is avoided, positioning by using a reference excircle is realized, in order to ensure the verticality of a grinding hole and the inner end surface of the workpiece, the inner end surface of the workpiece is tightly attached to the clamp body by matching the pressing plate and the locking screw, and positioning and clamping are realized at one time.
The utility model discloses an improvement part includes:
(1) the mode that the tradition was directly clamped the work piece with three-jaw chuck or four-jaw chuck then adopted artifical strapping alignment has been changed, adopts the utility model discloses an anchor clamps can directly regard as the location benchmark of work piece with the excircle reference surface. Thus, after the adjustment, each marking table is not required to be aligned.
(2) The mode that the tradition pressed from both sides tight work piece in order to press from both sides the mode of excircle has been changed, the utility model discloses an anchor clamps adopt the terminal surface clamp plate to compress tightly, and this just provides the assurance for the terminal surface straightness that hangs down of guaranteeing the processing product.
The utility model discloses an anchor clamps utilize two reducing covers to come as the benchmark of front end excircle location, utilize the interior terminal surface as plane location benchmark simultaneously to solve the problem of quick location.
Compared with the prior art, the utility model discloses an advantage mainly embodies in following aspect:
1. the service life is long: the clamp body adopts medium carbon steel quenching and tempering treatment and then accurate grinding processing, has good surface roughness, is not easy to rust and deform, and has longer service life.
2. The positioning precision is high: the fixture avoids the maximum outer diameter of the excircle of the workpiece through the positioning sleeve in the shape of the step, is directly positioned on the reference excircle, and is high in positioning accuracy.
3. The clamping is simple and reliable: the workpiece is pressed by the end face of the pressing plate, the pressing plate is rotated by 90 degrees after the screw is loosened, the workpiece can be taken out, the screw can be screwed for pressing by rotating the pressing plate by 90 degrees after the workpiece is installed, and the clamping is very simple.
4. The processing quality of the product is stable: because the clamp directly uses the excircle reference and the plane reference for positioning, the positions of the two positioning sleeves are fixed after being adjusted, so the processing quality is stable, and the influence of the manual surface making factor is avoided.
5. Good economical efficiency: after the tool is only required to be adjusted to the first position, the surface is not required to be marked again when an inner hole is ground, the machining efficiency is improved by 80% compared with the surface marking, and the economic benefit is obvious.
6. The making range is wide: the fixture can realize the positioning of clamping of workpieces with different sizes by replacing different positioning sleeves, has strong universality and is easy to switch similar products.
Drawings
Fig. 1 is a schematic structural view of a self-aligning jig for grinding an inner hole in embodiment 1;
FIG. 2 is a schematic sectional view of the plane A-A in FIG. 1.
Reference numbers in the figures: 1. the fixture comprises a fixture body, 2, a positioning sleeve, 3, a fastening screw, 4, a pressing plate, 5, a locking screw and 6 workpieces.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
Referring to fig. 1 and 2, the embodiment provides an aligning clamp for grinding an inner hole, which includes a clamp body 1, a positioning sleeve 2, a fastening screw 3, a pressing plate 4 and a locking screw 5, wherein one end of the clamp body 1 is used for being connected with a main shaft of a machine tool, the other end of the clamp body is used for fixing a workpiece 6, the workpiece 6 is placed on the clamp body 1, the workpiece 6 is pressed through the pressing plate 4 and is positioned through the positioning sleeve 2, the fastening screw 3 is used for fixing the positioning sleeve 2 on the clamp body 1, and the locking screw 5 is used for locking the pressing plate 4 on the clamp body 1.
In this embodiment, two pressure plates 4 are provided, and are respectively located at two radial ends of the workpiece 6. Two locking threaded holes for connecting the locking screws 5 are formed in the clamp body 1. The two positioning sleeves 2 are respectively positioned on two sides of one pressing plate 4. Two fastening threaded holes for connecting the fastening screws 3 are formed in the clamp body 1.
In this embodiment, the lower end of the workpiece 6 is in a step-shaped structure, one end of the pressing plate 4 presses on the step of the workpiece 6, and the other end of the pressing plate directly presses on the surface of the fixture body 1. The lower end of the positioning sleeve 2 is of a step-shaped structure, the middle part of the lower end of the positioning sleeve 2 is directly pressed on the surface of the fixture body 1, and the edge part of the lower end of the positioning sleeve is pressed on a step of the workpiece 6.
In this embodiment, one end of the fixture body 1 is used for being connected with a spindle of a machine tool through a three-jaw chuck or a four-jaw chuck. The fixture body 1 is arranged coaxially with the workpiece 6. The fixture body 1 is of a hollow structure with a through hole in the middle.
In the embodiment, the clamp body 1 is subjected to quenching and tempering by medium carbon steel and then is subjected to fine grinding.
By adopting the clamp of the embodiment, the positioning sleeves with different sizes can be selected according to the size change of the excircle of the workpiece, and are fixed on the clamp body by the fastening screws. After the workpiece is placed in place in the clamp, the end face of the workpiece is tightly attached to the end face of the clamp through the pressing plate and the locking screw, so that the requirement on perpendicularity is met.
The working principle of the embodiment is as follows:
the clamp body is connected with a main shaft of a machine tool through a three-jaw chuck or a four-jaw chuck, then two positioning sleeves are installed on the clamp body, and meanwhile two positioning sleeves are installed on the clamp body through fastening screws and fixed on the clamp body. The two positioning sleeves are stepped, so that the maximum outer diameter of a workpiece is avoided, positioning by using a reference excircle is realized, in order to ensure the verticality of a grinding hole and the inner end surface of the workpiece, the inner end surface of the workpiece is tightly attached to the clamp body by matching the pressing plate and the locking screw, and positioning and clamping are realized at one time.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims (10)

1. The utility model provides an aligning anchor clamps for grinding hole, its characterized in that, includes the anchor clamps body (1), position sleeve (2), fastening screw (3), clamp plate (4) and locking screw (5), anchor clamps body (1) one end is used for being connected with the lathe main shaft, and the other end is used for fixed work piece (6), work piece (6) are placed on the anchor clamps body (1), work piece (6) are pushed down through clamp plate (4), fix a position through position sleeve (2) simultaneously, fastening screw (3) are used for fixing position sleeve (2) on the anchor clamps body (1), locking screw (5) are used for locking clamp plate (4) on the anchor clamps body (1).
2. The aligning clamp for grinding an inner hole according to claim 1, wherein the two pressing plates (4) are respectively arranged at two radial ends of the workpiece (6).
3. The aligning clamp for grinding an inner hole according to claim 2, wherein the clamp body (1) is provided with two locking threaded holes for connecting the locking screws (5).
4. The aligning clamp for grinding an inner hole according to claim 1, wherein two positioning sleeves (2) are arranged and are respectively positioned at two sides of one pressing plate (4).
5. The aligning clamp for grinding an inner hole according to claim 4, wherein the clamp body (1) is provided with two fastening threaded holes for connecting fastening screws (3).
6. The self-aligning clamp for grinding an inner hole according to claim 1, wherein the lower end of the workpiece (6) is of a step-shaped structure, one end of the pressure plate (4) presses on the step of the workpiece (6), and the other end of the pressure plate directly presses on the surface of the clamp body (1).
7. The self-aligning clamp for grinding an inner hole according to claim 1, wherein the lower end of the workpiece (6) is of a step-shaped structure, the lower end of the positioning sleeve (2) is of a step-shaped structure, the middle part of the lower end of the positioning sleeve (2) is directly pressed on the surface of the clamp body (1), and the edge part is pressed on the step of the workpiece (6).
8. The self-aligning clamp for grinding an inner hole is characterized in that one end of the clamp body (1) is used for being connected with a machine tool spindle through a three-jaw chuck or a four-jaw chuck.
9. The aligning clamp for grinding an inner hole according to claim 1, wherein the clamp body (1) is coaxially arranged with the workpiece (6).
10. The aligning clamp for grinding an inner hole according to claim 1, wherein the clamp body (1) is a hollow structure with a through hole in the middle.
CN202022462506.8U 2020-10-29 2020-10-29 Aligning clamp for grinding inner hole Active CN213438676U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022462506.8U CN213438676U (en) 2020-10-29 2020-10-29 Aligning clamp for grinding inner hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022462506.8U CN213438676U (en) 2020-10-29 2020-10-29 Aligning clamp for grinding inner hole

Publications (1)

Publication Number Publication Date
CN213438676U true CN213438676U (en) 2021-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022462506.8U Active CN213438676U (en) 2020-10-29 2020-10-29 Aligning clamp for grinding inner hole

Country Status (1)

Country Link
CN (1) CN213438676U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113787357A (en) * 2021-08-16 2021-12-14 北京实验工厂有限责任公司 Positioning and clamping device and method for processing pin shaft hole system of cross shaft press-fitting assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113787357A (en) * 2021-08-16 2021-12-14 北京实验工厂有限责任公司 Positioning and clamping device and method for processing pin shaft hole system of cross shaft press-fitting assembly

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