CN220028908U

CN220028908U - Static pressure gear grinding clamp

Info

Publication number: CN220028908U
Application number: CN202321047407.0U
Authority: CN
Inventors: 沈磊; 朱亮; 蔡李华; 蔡正伟
Original assignee: Zhejiang Chiyang Precision Tools Co ltd
Current assignee: Zhejiang Chiyang Precision Tools Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-11-17
Anticipated expiration: 2033-04-28

Abstract

The utility model discloses a static pressure gear grinding clamp which comprises a clamp main body, an expansion body and an oil cylinder, wherein the expansion body is sleeved and fixed at one end of the clamp main body, the oil cylinder is fixed at the other end of the clamp main body, the expansion body is used for sleeving a workpiece and is provided with a deformation part for deforming and tightly supporting the workpiece, a liquid cavity communicated to the deformation part is arranged in the clamp main body, a piston rod of the oil cylinder slides and drives liquid in the extrusion liquid cavity to drive the deformation part to deform, the workpiece is sleeved and connected on the expansion body in the actual installation process, then the oil cylinder drives the piston rod to move and extrude the liquid in the liquid cavity, and the pressed liquid applies pressure to the deformation part to enable the deformation part to outwards bulge and deform so as to achieve the purpose of supporting and fixing the workpiece.

Description

Static pressure gear grinding clamp

Technical Field

The utility model relates to the field of clamps, in particular to a static pressure gear grinding clamp.

Background

The fixture is a device for fixing a machining object in a correct position in a mechanical manufacturing process to receive construction or detection, and is also called a fixture in a broad sense, and any process in which the machining process is integrated is called a fixture for quickly, conveniently and safely mounting a workpiece.

For example, chinese patent publication No. CN202861553U discloses an expansion gear grinding jig, which includes a jig body, an expansion body surrounding the upper portion of the outer portion of the tapered jig body, and 6 open grooves opposite to each other are provided on the expansion body. The expansion body moves downwards through tightening the compression nut, the outer circle of the expansion body is uniformly expanded under the extrusion action of the conical surface of the clamp body, the extrusion force is uniformly distributed to compress the inner hole surface of the product, and the expansion structure basically eliminates the fit clearance, so that higher repeated positioning accuracy is realized. Has excellent vibration-proof damping effect, and can inhibit vibration generated in grinding process, thereby obviously improving the surface roughness of the processed workpiece.

In the installation, the workpiece is sleeved on the clamp body, then the expansion body and the compression nut are sleeved, the clamp can be fixed by tightening the compression nut, and the defects of more operation steps and inconvenient operation exist.

Disclosure of Invention

In order to further improve the convenience of operation, the utility model provides a static pressure gear grinding clamp.

The utility model provides a static pressure gear grinding clamp, which adopts the following technical scheme:

the utility model provides a static pressure gear grinding anchor clamps, includes the anchor clamps main part, still includes inflation body and hydro-cylinder, the inflation body cup joints the one end of fixing at the anchor clamps main part, the hydro-cylinder is fixed at the other end of anchor clamps main part, the inflation body supplies the work piece to cup joint and has the deformation to support the deformation portion of tight work piece, the inside liquid chamber that communicates to deformation portion department that is provided with of anchor clamps main part, the piston rod slip drive extrusion liquid intracavity liquid of hydro-cylinder is in order to order about deformation portion to deform.

Optionally, the expansion body butt anchor clamps main part's inner wall and correspond deformation department and be provided with the annular chamber with liquid chamber intercommunication.

Optionally, the liquid cavity includes a first flow channel and a second flow channel that are mutually communicated, the first flow channel is located at one end of the second flow channel near the expansion body, and the cross-sectional area of the first flow channel is smaller than that of the second flow channel.

Optionally, a sealing component is slidably connected to one end, away from the first runner, of the second runner, and one end, away from the first runner, of the sealing component is used for being pushed by a piston rod of the oil cylinder.

Optionally, an auxiliary push rod is arranged at one end of the sealing component, which is opposite to the first flow channel, and a distance exists between the auxiliary push rod and the end part of the piston rod of the oil cylinder.

Optionally, an adjusting block is detachably connected to the end of the piston rod of the oil cylinder.

Optionally, a connection channel for communicating the liquid cavity and the annular cavity is arranged between the liquid cavity and the annular cavity, and the connection channels are uniformly distributed around the circumference of the axis of the clamp body.

Optionally, the one end that the anchor clamps main part was kept away from the hydro-cylinder can dismantle and be connected with support piece, one side that support piece kept away from the hydro-cylinder is used for the butt work piece.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. in the actual installation operation process, the workpiece is only required to be sleeved on the expansion body, then the piston rod of the oil cylinder drives the liquid in the extrusion liquid cavity to apply acting force to the deformation part to drive the deformation part to deform so as to resist and fix the workpiece, and the operation steps are simplified and the convenience is higher;

2. the section of the first flow passage is smaller than that of the second flow passage, and therefore the tiny forming change of the piston rod of the oil cylinder in the driving process can ensure that the liquid of the first flow passage can reach larger stroke change so as to achieve better driving deformation effect;

3. the setting of annular chamber makes the whole thinner of wall thickness of deformation portion to make deformation portion possess better deformability, the feedback of atress deformation is more timely.

Drawings

Fig. 1 is an overall structural diagram of an embodiment of the present utility model.

Fig. 2 is an enlarged view at a in fig. 1.

Reference numerals illustrate:

1. a clamp body; 2. an oil cylinder; 3. a mounting part; 4. an expansion body; 5. a first flow passage; 6. a second flow passage; 7. an annular cavity; 8. a connection channel; 9. a seal assembly; 10. an auxiliary push rod; 11. a piston rod; 12. adjusting the block; 13. a support; 14. a workpiece; 15. a deformation part.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1.

The embodiment of the utility model discloses a static pressure gear grinding clamp.

As shown in fig. 1, a static pressure gear grinding clamp comprises a clamp main body 1 and an oil cylinder 2, wherein the clamp main body 1 is detachably connected and fixed on one side of the oil cylinder 2 through bolts, one end of the clamp main body 1, which is stepped and far away from the oil cylinder 2, is provided with an installation part 3 for the expansion body 4 to be sleeved and installed, the center of the expansion body 4 is provided with a groove matched with the installation part 3, and the groove is sleeved and connected on the installation part 3 by virtue of the groove, so that a gear to be processed is sleeved and connected on the expansion body 4 in actual use.

As shown in fig. 1 and 2, a liquid cavity is formed in the center of the clamp body 1, the liquid cavity comprises a first flow passage 5 and a second flow passage 6 which are communicated with each other, wherein the cross-sectional area of the first flow passage 5 is smaller than that of the second flow passage 6, the second flow passage 6 is positioned at one side of the first flow passage 5 close to the oil cylinder 2, the liquid cavity is filled with a liquid medium, and the liquid medium can be water or oil; in addition, the annular cavity 7 is formed in the inner wall of the groove of the expansion body 4, the deformation part 15 is formed at the outer wall of the corresponding annular cavity 7 of the expansion body 4, the connecting channels 8 for communicating the annular cavity 7 and the first flow channel 5 are arranged between the annular cavity 7 and the first flow channel 5, the connecting channels 8 are uniformly distributed around the circumference of the axis of the clamp body 1, and therefore liquid in the first flow channel 5 can flow into the annular cavity 7 more uniformly to be pressurized.

As shown in fig. 1, one end of the second flow channel 6 far away from the first flow channel 5 is slidably connected with a sealing component 9, the sealing component 9 comprises a sealing block and a sealing ring, the sealing ring is sleeved on the sealing block to realize sealing and reduce the outflow of liquid, meanwhile, one end of the sealing component 9 far away from the first flow channel 5 is provided with an auxiliary push rod 10 which is abutted with the sealing component, the auxiliary push rod 10 is slidably connected in the second flow channel 6, one end of the auxiliary push rod 10 penetrates out of the second flow channel 6 and is used for being pushed by a piston rod 11 of the oil cylinder 2, direct stress of the sealing component 9 is avoided by means of the arrangement of the auxiliary push rod 10, and the condition that the sealing component 9 is easy to damage is reduced.

As shown in fig. 1, an adjusting block 12 is detachably connected to the end of a piston rod 11 of the oil cylinder 2, the adjusting block 12 is fixed to the end of the piston rod 11 in a screw connection manner, a certain distance exists between the adjusting block 12 and the end of the piston rod 11, when the distance is inappropriate, the adjusting block 12 with different thicknesses can be replaced to adjust the distance, the piston rod 11 of the oil cylinder 2 is arranged at the distance after retreating, the sealing assembly 9 and the auxiliary push rod 10 can automatically retract to the initial position under the hydraulic action in the liquid chamber, and the workpiece 14 can be conveniently and smoothly taken down from the expansion body 4.

As shown in fig. 1, a support member 13 is further disposed at one end of the clamp body 1, where the expansion body 4 is disposed, the support member 13 is sleeved outside the expansion body 4, the support member 13 is detachably connected with the clamp body 1 through screw fixation, one side of the support member 13, which is far away from the oil cylinder 2, is used for abutting against one side of the workpiece 14, so that the workpiece 14 can be initially positioned by abutting against the support member 13 on one side of the workpiece 14 in the installation process, and the clamp body 1 can be prevented from being directly contacted with the workpiece 14 by means of the support member 13, so that abrasion of the surface of the clamp body 1 is reduced.

The working principle of the embodiment is as follows: the expansion body 4 is sleeved on the mounting part 3 of the clamp main body 1 in advance, the workpiece 14 is sleeved on the mounting part 3 of the clamp main body 1 in a gear mode during mounting, then the oil cylinder 2 is started to enable the piston rod 11 to move towards the auxiliary push rod 10, the auxiliary push rod 10 continuously extrudes liquid in the liquid cavity under the pushing of the piston rod 11, the liquid in the annular cavity 7 is continuously extruded to enable the hydraulic pressure in the annular cavity 7 to be continuously increased, the deformation part 15 is enabled to be deformed outwards to be abutted against the inner wall of the workpiece 14 so as to achieve clamping and fixing of the workpiece 14, when the workpiece 14 needs to be taken down after machining is completed, the piston rod 11 of the oil cylinder 2 is retracted, the auxiliary push rod 10 is retracted under the pressure of the liquid in the liquid cavity, at the moment, the deformation part 15 does not abut against the workpiece 14 any more, the workpiece 14 can be taken out smoothly, and the workpiece 14 is easy and convenient to assemble and disassemble.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a static pressure gear grinding anchor clamps, includes anchor clamps main part (1), its characterized in that: still include inflation body (4) and hydro-cylinder (2), the one end at anchor clamps main part (1) is cup jointed to inflation body (4), the other end at anchor clamps main part (1) is fixed to hydro-cylinder (2), inflation body (4) supply work piece (14) to cup joint and have deformation portion (15) that deformation supported tight work piece (14), inside liquid chamber that is provided with of anchor clamps main part (1) intercommunication to deformation portion (15) department, piston rod (11) sliding drive extrusion liquid intracavity liquid of hydro-cylinder (2) is in order to order about deformation portion (15) to deform.

2. A static pressure tooth grinding fixture as defined in claim 1, wherein: the expansion body (4) is abutted against the inner wall of the clamp main body (1) and an annular cavity (7) communicated with the liquid cavity is arranged at the position corresponding to the deformation part (15).

3. A static pressure tooth grinding fixture as defined in claim 1, wherein: the liquid cavity comprises a first flow passage (5) and a second flow passage (6) which are communicated with each other, the first flow passage (5) is positioned at one end of the second flow passage (6) close to the expansion body (4), and the cross-sectional area of the first flow passage (5) is smaller than that of the second flow passage (6).

4. A static pressure tooth grinding fixture according to claim 3, characterized in that: one end of the second flow passage (6) far away from the first flow passage (5) is slidably connected with a sealing assembly (9), and one end of the sealing assembly (9) far away from the first flow passage (5) is used for being pushed by a piston rod (11) of the oil cylinder (2).

5. A static pressure tooth grinding fixture as defined in claim 4, wherein: an auxiliary push rod (10) is arranged at one end, opposite to the first flow channel (5), of the sealing assembly (9), and a space exists between the auxiliary push rod (10) and the end part of a piston rod (11) of the oil cylinder (2).

6. A static pressure tooth grinding fixture as defined in claim 5, wherein: an adjusting block (12) is detachably connected to the end of a piston rod (11) of the oil cylinder (2).

7. A static pressure tooth grinding fixture as defined in claim 2, wherein: the connecting channels (8) for communicating the liquid cavity and the annular cavity (7) are arranged between the liquid cavity and the annular cavity, and the connecting channels (8) are uniformly distributed around the circumference of the axis of the clamp body (1).

8. A static pressure tooth grinding fixture as defined in claim 1, wherein: one end of the clamp main body (1) far away from the oil cylinder (2) is detachably connected with a supporting piece (13), and one side of the supporting piece (13) far away from the oil cylinder (2) is used for being abutted to a workpiece (14).