CN218488121U

CN218488121U - Positioning clamp

Info

Publication number: CN218488121U
Application number: CN202222778891.6U
Authority: CN
Inventors: 刘辉煌; 陈星�
Original assignee: Dongguan Yutong Optical Technology Co Ltd
Current assignee: Dongguan Yutong Optical Technology Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-17
Anticipated expiration: 2032-10-21

Abstract

The utility model belongs to the technical field of machining and discloses a positioning clamp which comprises a tool body, a connecting piece and a fastener; the first end of the tool body can be connected with the grinding machine, the second end of the tool body can abut against a product to be ground, the first end of the connecting piece can be fixedly connected with the product to be ground, the second end of the connecting piece can penetrate through the tool body and can be in threaded connection with the fastener, and the fastener can abut against the first end of the tool body to be fixed on the tool body. The utility model provides a positioning clamp, firstly, the first end of a connecting piece can be fixedly connected with a product to be ground; then, penetrating the second end of the connecting piece through the tool body and pre-connecting the fastening piece; and finally, the product to be ground is abutted against the second end of the tool body, and the fastening piece is screwed so that the product to be ground is fixed on the tool body.

Description

Positioning clamp

Technical Field

The utility model relates to a machine tooling technical field especially relates to a positioning fixture.

Background

The inner and outer grinding machines are new generation high precision, high efficiency production type machine tools, mainly used for grinding cylindrical and conical small holes, can also grind excircle and end face, guarantees the precision of hole and end face, and the whole grinding operation of inner and outer grinding machines can be accomplished by automatic cycle, and the operator only needs to install and remove the work piece to have the special function of multiple adaptation abrasive machining requirement, can satisfy the user to the processing demand of multiple part.

At present, a product is connected with a grinding machine through a tool clamp, the general tool clamp is directly connected with the product through threads or connected with the product through screws, the tool clamp and the product can rotate relatively due to the connection mode, then the contact surface of the tool clamp and the product can be scratched, the product quality is affected, the scratch caused by frequent replacement of the product of the tool clamp can affect the positioning accuracy of the tool clamp and the product, and the machining accuracy of the product is finally affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a positioning fixture, can effectively avoid and the product between take place relative rotation to avoid causing the influence to the quality and the machining precision of product.

To achieve the purpose, the utility model adopts the following technical proposal:

the positioning clamp comprises a tool body, a connecting piece and a fastening piece; wherein the content of the first and second substances,

the first end of the tool body can be connected with the grinding machine, and the second end of the tool body can be abutted against a product to be ground;

the first end of the connecting piece can be fixedly connected with the product to be ground, and the second end of the connecting piece can penetrate through the tool body and can be in threaded connection with the fastening piece;

the fastener can with the first end butt of frock body is in order will the product of waiting to grind is fixed in on the frock body.

Optionally, a through hole is formed in the tool body, a sealing ring is sleeved on the connecting piece, the connecting piece can penetrate through the through hole, and the sealing ring can seal the gap between the connecting piece and the through hole.

Optionally, an annular groove is arranged on the periphery of the connecting piece, and the sealing ring is arranged in the annular groove.

Optionally, the connecting piece is provided with at least one sealing ring along the axial direction.

Optionally, be provided with on the frock body with the heavy groove of through-hole intercommunication, the fastener can be arranged in the heavy inslot.

Optionally, still include the spanner head, the one end of spanner head is provided with the sleeve, the sleeve can be located on the fastener so that the fastener can follow the spanner head is rotatory, the sleeve can be arranged in the heavy inslot and with the heavy groove is shaft hole clearance fit.

Optionally, the first end of the tool body is shaped like a circular disk, and the grinding machine is connected with the first end of the tool body in an adsorption manner through a suction cup.

Optionally, treat that the product orientation of grinding the one end of frock body is provided with first connecting hole, be provided with the internal thread in the first connecting hole, the first end of connecting piece be provided with the external screw thread of the internal thread accordant connection in the first connecting hole.

Optionally, the fastener is provided with a second connecting hole, an internal thread is arranged in the second connecting hole, and an external thread connected with the internal thread in the second connecting hole in a matching manner is arranged at the second end of the connecting piece.

Optionally, the fastener is configured as a hex nut.

The utility model has the advantages that:

the utility model provides a positioning clamp, firstly, a first end of a connecting piece is fixedly connected with a product to be ground; then, penetrating the second end of the connecting piece through the tool body and pre-connecting the fastening piece; and finally, the product to be ground is abutted against the second end of the tool body, and the fastener is screwed so that the product to be ground is fixed on the tool body, when the fastener is screwed, the force of screwing the fastener is not enough to enable the product to be ground and the tool body to rotate, the scratch is effectively prevented from occurring, and the influence on the quality and the processing precision of the product to be ground is avoided.

Drawings

Fig. 1 is an exploded schematic view of a positioning fixture provided by the present invention;

FIG. 2 is a schematic view of the positioning fixture of the present invention disposed on the suction cup;

fig. 3 is a structural schematic view of the overall tool body provided by the present invention in a disc shape;

fig. 4 is a cross-sectional view of a positioning fixture provided by the present invention;

fig. 5 is a schematic structural view of a fastener and a sealing ring provided by the present invention;

fig. 6 is another schematic structural view of the fastener and the sealing ring provided by the present invention;

fig. 7 is a schematic structural view of a first end of the tool body provided by the present invention;

fig. 8 is a schematic structural diagram of a wrench head provided by the present invention.

In the figure:

100. a tool body; 110. a through hole; 120. sinking a groove;

200. a connecting member; 210. an annular groove; 220. screwing grooves;

300. a fastener; 310. a second connection hole;

400. a product to be ground; 410. a first connection hole;

500. a suction cup;

600. a seal ring;

700. a wrench head; 710. a sleeve; 720. and a screwing part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Referring to fig. 1, the present embodiment provides a positioning fixture, which includes a fixture body 100, a connecting member 200, and a fastener 300; wherein, the first end of frock body 100 can be connected with the grinding machine, the second end of frock body 100 can with wait to grind product 400 butt, the first end of connecting piece 200 can with wait to grind product 400 fixed connection, the second end of connecting piece 200 can wear to establish frock body 100 and can with fastener 300 threaded connection, fastener 300 can be fixed in on frock body 100 with waiting to grind product 400 with the first end butt of frock body 100.

In this embodiment, first, the first end of the connecting member 200 may be fixedly connected with the product 400 to be ground; then, the second end of the connecting member 200 is passed through the tool body 100 and is pre-coupled with the fastener 300; finally, the product 400 to be ground abuts against the second end of the tool body 100, and the fastener 300 is screwed so that the product 400 to be ground is fixed on the tool body 100, and when the fastener 300 is screwed, the force for screwing the fastener 300 is not enough to enable the product 400 to be ground and the tool body 100 to rotate, thereby effectively preventing the occurrence of scratches and avoiding the influence on the quality and the processing precision of the product 400 to be ground.

In the present embodiment, referring to fig. 2, the first end of the tool body 100 is shaped like a disk, and the grinding machine is connected to the first end of the tool body 100 by suction via the suction cup 500. In this embodiment, the grinding machine is interior excircle grinding machine, interior excircle grinding machine divide into magnetism to inhale with the air-suction dual mode, the first end of frock body 100 adsorbs on interior excircle grinding machine, the disk deformation of magnetism formula interior excircle grinding machine can influence the depth of parallelism and the axiality of accurate location, and sucking disc 500 on the board of air-suction type interior excircle grinding machine inhales the first end of fixed frock body 100 through the vacuum, can guarantee the depth of parallelism and the axiality of accurate location, consequently, the preferred air-suction type interior excircle grinding machine of this embodiment. The air-suction type internal and external grinding machine is the prior art and is not described in detail herein.

Specifically, the second end of the tool body 100 can be designed in a profiling manner, the cross section of the second end of the tool body 100 is the same as the shape of the product 400 to be ground facing the tool body 100, the position of the product 400 to be ground relative to the tool body 100 can be conveniently observed and positioned, the end face of the product 400 to be ground facing the tool body 100 can be completely attached to the end face of the second end of the tool body 100, uniform distribution of contact stress between the product 400 to be ground and the tool body 100 is ensured, and rotation between the product 400 to be ground and the tool body 100 is effectively prevented. Of course, as shown in fig. 3, the entire fixture body 100 may have a disk shape, and the second end of the fixture body 100 is not formed in a profile design.

In this embodiment, referring to fig. 4 to 6, the tool body 100 is provided with a through hole 110, the connecting member 200 is sleeved with a sealing ring 600, the connecting member 200 can penetrate through the through hole 110 and the sealing ring 600 can seal a gap between the connecting member 200 and the through hole 110, so as to prevent liquid from flowing from the second end of the tool body 100 to the first end of the tool body 100 through the through hole 110 and entering the machine station through the suction cup 500, thereby damaging the machine station.

In particular, the connection 200 is provided with at least one sealing ring 600 in the axial direction. In the present embodiment, the connector 200 has a columnar shape, the outer peripheral side of the seal ring 600 is bonded to the inner wall of the through hole 110, and the inner peripheral side of the seal ring 600 is bonded to the outer peripheral side of the connector 200. Preferably, the number of the sealing rings 600 is one to three. Fig. 5 is a schematic structural view of the connector 200 having two sealing rings 600 arranged along the axial direction, and fig. 6 is a schematic structural view of the connector 200 having one sealing ring 600.

Further, the circumferential side of the connecting member 200 is provided with the annular groove 210, the sealing ring 600 is disposed in the annular groove 210, and in the process that the connecting member 200 is disposed in the through hole 110, the sealing ring 600 cannot be displaced along the axial direction of the connecting member 200, so that the assembly is convenient. In addition, the diameter of the through hole 110 can be designed to be small enough so that the pressing force applied to the sealing ring 600 between the connecting member 200 and the through hole 110 is large enough to achieve a better sealing effect.

In this embodiment, as shown in fig. 4, the end of the to-be-milled product 400 facing the tool body 100 is provided with a first connection hole 410, an internal thread is provided in the first connection hole 410, and the first end of the connecting member 200 is provided with an external thread connected to the internal thread in the first connection hole 410 in a matching manner, so that the to-be-milled product 400 is conveniently connected to the first connecting member 200.

It should be noted that the second end of the connecting member 200 is provided with a screw groove 220, and a wrench can screw the connecting member 200 through the screw groove 220 to facilitate the connection between the connecting member 200 and the product 400 to be ground.

Further, fastener 300 is provided with second connecting hole 310, is provided with the internal thread in the second connecting hole 310, and the second end of connecting piece 200 is provided with the external screw thread with the internal thread accordant connection in the second connecting hole 310, and this design is superior to fastener 300 and sets up the external screw thread, and the second end of connecting piece 200 sets up the design of internal thread, and the structure is simpler, convenient equipment.

Preferably, the fastener 300 is a hexagonal nut. Of course, the fastener 300 may be other structural members and is not overly limited herein.

In the embodiment, referring to fig. 4 and 7 to 8, the tool body 100 is provided with a sinking groove 120 communicated with the through hole 110, and the fastening member 300 can be placed in the sinking groove 120 to avoid the interference phenomenon between the suction cup 500 and the fastening member 300.

Further, the positioning fixture further comprises a wrench head 700, a sleeve 710 is arranged at one end of the wrench head 700, the sleeve 710 can be sleeved on the fastener 300 so that the fastener 300 can rotate along with the wrench head 700, the sleeve 710 can be arranged in the sunken groove 120 and is in clearance fit with the sunken groove 120 through a shaft hole, when the wrench head 700 is rotated, the fastener 300 is only subjected to the torsion force of the sleeve 710 along the circumferential direction and the pressing force of the bottom surface of the sunken groove 120 along the axial direction, so that the connecting piece 200 tightly applies an axial force to the product 400 to be ground, the product 400 to be ground is only subjected to the axial force, the displacement caused by uneven stress of the product 400 to be ground is effectively avoided, the scratching condition is further avoided, the connecting piece 200 can be centered relative to the through hole 110, the centering precision of the product 400 to be ground and the tool body 100 is ensured, the sealing failure caused by uneven distribution of the pressing force applied to the sealing ring 600 is avoided, and the processing precision of the product 400 to be ground is ensured.

Further, the end of the wrench head 700 facing away from the socket 710 is provided with a screw 720 for connection with a hand or electric wrench. Preferably, the wrench is preferably a torque wrench, and the fastener 300 is fastened by the torque wrench, so that the connection reliability of the product 400 to be ground is effectively guaranteed.

Preferably, the cross-sectional shape of the screw part 720 is hexagonal, and the coupling member 200 and the product 400 to be ground are fastened by a hexagonal wrench.

Further, the interior shape of the shroud 710 is contoured to the fastener 300, and may be triangular, hexagonal, or other shapes, as well as not overly limited herein.

For example, first, a first end of the connection member 200 is screw-fastened to the product to be ground 400 by inserting a hexagonal wrench into a hexagonal groove of the screw portion 720 and screwing; then, sleeving the sealing ring 600 on the connecting piece 200, and penetrating the second end of the connecting piece 200 through the tool body 100, so that the product 400 to be ground abuts against the second end of the tool body 100, and pre-connecting the fastener 300 at the second end of the connecting piece 200; finally, the socket 710 of the wrench head 700 is sleeved on the fastener 300 to ensure that the socket 710 is disposed in the counter sink 120, the wrench head 700 is screwed by a torque wrench to fasten the fastener 300, the product 400 to be ground is fixed to the tool body 100, and the assembled product 400 to be ground and the positioning clamp are adsorbed on the suction cup 500 for processing. The positioning fixture applied to the product 400 to be ground in the embodiment is connected with the grinding machine, so that the scratch is effectively prevented, and the quality and the processing precision of the product 400 to be ground are effectively guaranteed.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The positioning fixture is characterized by comprising a fixture body (100), a connecting piece (200) and a fastener (300); wherein, the first and the second end of the pipe are connected with each other,

the first end of the tool body (100) can be connected with a grinding machine, and the second end of the tool body (100) can be abutted against a product (400) to be ground;

the first end of the connecting piece (200) can be fixedly connected with the product (400) to be ground, and the second end of the connecting piece (200) can penetrate through the tool body (100) and can be in threaded connection with the fastener (300);

the fastener (300) can be abutted against the first end of the tool body (100) so as to fix the product (400) to be ground on the tool body (100).

2. The positioning fixture according to claim 1, wherein a through hole (110) is formed in the fixture body (100), a sealing ring (600) is sleeved on the connecting piece (200), the connecting piece (200) can penetrate through the through hole (110), and the sealing ring (600) can seal a gap between the connecting piece (200) and the through hole (110).

3. The positioning clamp according to claim 2, characterized in that the circumferential side of the connector (200) is provided with an annular groove (210), the sealing ring (600) being placed in the annular groove (210).

4. Positioning fixture according to claim 2, characterized in that the connection piece (200) is provided with at least one sealing ring (600) in axial direction.

5. The positioning fixture according to claim 2, wherein the fixture body (100) is provided with a sunken groove (120) communicated with the through hole (110), and the fastener (300) can be placed in the sunken groove (120).

6. The positioning fixture according to claim 5, further comprising a wrench head (700), wherein a sleeve (710) is disposed at one end of the wrench head (700), the sleeve (710) can be sleeved on the fastener (300) to enable the fastener (300) to rotate with the wrench head (700), and the sleeve (710) can be disposed in the countersunk groove (120) and is in shaft hole clearance fit with the countersunk groove (120).

7. The positioning jig as claimed in claim 1, wherein the first end of the tool body (100) is shaped like a disc, and the grinding machine is connected to the first end of the tool body (100) by suction via a suction cup (500).

8. The positioning fixture according to claim 1, wherein one end of the product to be ground (400) facing the tool body (100) is provided with a first connecting hole (410), an internal thread is arranged in the first connecting hole (410), and an external thread matched with the internal thread in the first connecting hole (410) is arranged at the first end of the connecting piece (200).

9. The positioning fixture according to claim 1, wherein the fastener (300) is provided with a second connecting hole (310), wherein an internal thread is provided in the second connecting hole (310), and wherein the second end of the connecting piece (200) is provided with an external thread for mating connection with the internal thread in the second connecting hole (310).

10. The positioning jig of claim 1, wherein the fastener (300) is configured as a hex nut.