CN217345043U

CN217345043U - Grinding machine fixture structure

Info

Publication number: CN217345043U
Application number: CN202220206876.1U
Authority: CN
Inventors: 许波; 马仕川; 姚浪; 周志强; 陈勇; 郝娇山; 蒋永兵
Original assignee: Chongqing Chuanyi Control Valve Co Ltd
Current assignee: Chongqing Chuanyi Control Valve Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-09-02
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to a frock clamp technical field discloses a grinding machine fixture structure, which comprises a chuck, be provided with the jack catch on the chuck, still include fixture base and clamp plate, the clamp plate with fixture base can dismantle the connection, the through-hole has been seted up on the clamp plate, fixture base is connected with the top of chuck, the draw-in groove has been seted up on the fixture base, the quantity of draw-in groove is the same with the quantity of jack catch, jack catch on the chuck passes the draw-in groove just can remove in the draw-in groove. The utility model discloses can avoid making the disk seat appear warping because of jack catch centre gripping or stretching.

Description

Grinding machine fixture structure

Technical Field

The utility model relates to a frock clamp technical field, concretely relates to grinding machine fixture structure.

Background

The ball valve is a key valve for cutting off a medium in a pipeline, and is widely applied to the fields of petroleum, chemical industry, metallurgy, power plants, coal chemical industry and the like.

In the process of manufacturing the ball valve, a ball core valve seat of the ball valve needs to be ground, so that the ball core valve seat has a good sealing surface. Wherein when grinding the ball valve disk seat, need use frock clamp installation fixed valve seat, restrict beating of disk seat to ensure the precision grinding effect to the disk seat.

The fixture in the prior art usually adopts a chuck, so that a clamping jaw on the chuck directly clamps a valve seat to achieve the purpose of fixing the valve seat. Although the clamping and fixing effects on the valve seat can be achieved by adopting the clamping jaw for clamping or tightly supporting the valve seat in the prior art, the valve seat is easy to deform due to the fact that the clamping jaw directly clamps the outer side of the valve seat, and the assembly precision and the sealing performance in the later period are affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a grinding machine fixture structure to avoid making the disk seat appear warping because of jack catch centre gripping or stretching tightly.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a grinding machine fixture structure, includes the chuck, be provided with the jack catch on the chuck, still include fixture base and clamp plate, the clamp plate with fixture base can dismantle the connection, the through-hole has been seted up on the clamp plate, fixture base is connected with the top of chuck, the last draw-in groove of having seted up of fixture base, the quantity of draw-in groove is the same with the quantity of jack catch, jack catch on the chuck passes the draw-in groove just can remove in the draw-in groove.

The principle and the advantages of the scheme are as follows: during the in-service use, put the disk seat on fixture base, the jack catch position on the adjustment chuck makes the jack catch remove in the draw-in groove to make the jack catch be located the hole of disk seat, after adjusting the position of jack catch, the clamp plate is placed on the top of disk seat to the rethread, makes clamp plate and fixture base be connected, thereby makes the clamp plate play spacing effect to the disk seat, and the disk seat produces and beats when preventing to grind the disk seat.

Use this anchor clamps to carry out the easy operation convenience fixed to the disk seat in this scheme, only need make the disk seat be located between clamp plate and the frock base, be connected clamp plate and frock base again and cooperate the location of jack catch can accomplish spacing the installation of disk seat. And the jack catch in this scheme only participates in the location of disk seat and does not provide clamping-force, and the fixed disk seat then covers the disk seat terminal surface by the clamp plate, compresses tightly the disk seat through being connected between clamp plate and the frock base, has avoided because of jack catch centre gripping or prop up the condition that makes the disk seat appear warping tightly.

The through hole of seting up on the clamp plate is convenient for smooth the stretching into of cutter on the grinding machine and carries out abrasive machining to the disk seat in this scheme.

Preferably, as an improvement, the bottom of the pressing plate is provided with a circular groove.

In the actual design, the recess internal diameter that makes clamp plate bottom slightly is greater than the external diameter of disk seat to can play spacing effect to the tip of disk seat, improve the holistic spacing effect of disk seat, can further prevent that the disk seat from appearing beating and influence the condition of grinding the precision at the in-process of grinding the disk seat.

Preferably, as an improvement, be equipped with the connecting piece between clamp plate and the frock base, a plurality of T type grooves of distributing along its circumference have been seted up on the top of frock base, a plurality of dysmorphism holes of distributing along its circumference have been seted up on the top of clamp plate, dysmorphism hole includes main aspects and tip, and the main aspects diameter in dysmorphism hole is greater than the tip diameter in dysmorphism hole, and rotatory clamp plate makes the connecting piece be located the tip in dysmorphism hole.

When installing the connecting piece in the T type inslot back of frock base in this scheme, make the connecting plate get into the tip in dysmorphism hole from the main aspects in dysmorphism hole through rotating the clamp plate to can play spacing effect to the connecting piece, and make things convenient for the quick installation to the clamp plate more, the main aspects in dysmorphism hole is convenient for the connecting piece and is inserted fast, assembly efficiency is improved, and the tip in dysmorphism hole can improve the closely degree of being connected between clamp plate and the connecting piece, thereby the effect that compresses tightly of reinforcing clamp plate to the disk seat.

Preferably, as an improvement, the bottom of the tool base is provided with a limiting groove, and the limiting groove can be clamped at the top end of the chuck.

So set up, can play the effect of location to the installation between fixture base and the chuck, make the installation between fixture base and the chuck more stable.

Preferably, as an improvement, a plurality of screw holes distributed along the circumferential direction of the tool base are formed in the tool base.

The setting of screw hole is convenient for link into an integrated entity with fixture base and chuck through the screw, and a plurality of screw hole circumference distribute be convenient for improve the fastening degree of fixture base and chuck.

Preferably, as an improvement, the bottom end of the chuck is connected with a connecting disc, and the bottom end of the connecting disc is provided with a positioning step.

The setting of connection pad is convenient for be connected with the work revolving stage on the grinding machine in this scheme to the work revolving stage on the grinding machine of being convenient for drives whole anchor clamps and rotates, drives the disk seat simultaneously and rotates, and the later stage of being convenient for is to the grinding of disk seat spherical sealing face.

Drawings

Fig. 1 is a longitudinal section view of an embodiment of a fixture structure of a grinding machine of the present invention.

Fig. 2 is a top view of an embodiment of a fixture structure of a grinding machine according to the present invention.

Fig. 3 is a top view of a tooling base in an embodiment of a grinding machine fixture structure of the present invention.

Figure 4 is the utility model discloses a grinding machine anchor clamps structural embodiment in the longitudinal section cross-sectional view of frock base.

Fig. 5 is a longitudinal sectional view of a pressing plate in an embodiment of a structure of a fixture of a grinding machine according to the present invention.

Fig. 6 is a top view of a pressing plate in an embodiment of the structure of the fixture of the grinding machine of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: 6-1 parts of nuts, 6-2 parts of pressing plates, 6-3 parts of valve seats, 6-4 parts of T-shaped groove bolts, 6-5 parts of tool bases, 6-6 parts of chucks, 6-7 parts of connecting discs, 6-8 parts of inner hexagon screws, 6-9 parts of T-shaped grooves, 6-10 parts of limiting grooves, 6-11 parts of screw holes, 6-12 parts of clamping grooves, 6-13 parts of grooves, 6-14 parts of special-shaped holes, 6-15 parts of clamping jaws and 6-16 parts of through holes.

The embodiment is basically as shown in the attached figures 1 and 2: a fixture structure of a grinding machine comprises a chuck 6-6, a tool base 6-5 and a pressure plate 6-2, wherein a clamping jaw 6-15 is arranged on the chuck 6-6, and the chuck 6-6 in the embodiment adopts a three-jaw chuck in the prior art.

The pressing plate 6-2 is detachably connected with the tool base 6-5, a through hole 6-16 is formed in the pressing plate 6-2, and the through hole 6-16 is arranged so that a cutter (grinding disc) on the grinding machine can extend into the valve seat 6-3 to grind the valve seat 6-3.

The tool base 6-5 is connected with the top end of the chuck 6-6, as shown in fig. 3, the tool base 6-5 is provided with three clamping grooves 6-12, the number of the clamping grooves 6-12 is the same as the number of the clamping jaws 6-15, the three clamping grooves 6-12 are uniformly distributed along the circumferential direction of the tool base 6-5, and the three clamping jaws 6-15 on the chuck 6-6 sequentially penetrate through the three clamping grooves 6-12 and can move radially in the clamping grooves 6-12.

Referring to fig. 4, the bottom end of the tool base 6-5 is provided with a limiting groove 6-10, the limiting groove 6-10 is of a circular structure, and the limiting groove 6-10 can be clamped at the top end of the chuck 6-6. The tool base 6-5 is provided with a plurality of T-shaped grooves 6-9 which are uniformly distributed along the circumferential direction. As shown in fig. 3, the tool base 6-5 is provided with a plurality of screw holes 6-11 uniformly distributed along the circumferential direction thereof, and as shown in fig. 1, the tool base 6-5 and the chuck 6-6 are fixed by socket head cap screws 6-8.

As shown in fig. 5, a circular groove 6-13 is formed at the bottom of the pressure plate 6-2, in this embodiment, the through hole 6-16 is a tapered hole, the diameter of the bottom end of the through hole 6-16 is smaller than that of the top end thereof, the inner diameter of the groove 6-13 is larger than the outer diameter of the valve seat 6-3, and the inner stiffness of the groove 6-13 is larger than that of the bottom end of the through hole 6-16, so that the top end of the valve seat 6-3 can enter the groove 6-13, and the groove 6-13 can position the valve seat 6-3.

With reference to fig. 1 and 6, a connecting piece is arranged between the pressing plate 6-2 and the tool base 6-5, the connecting piece in the embodiment is a T-shaped groove bolt 6-4, the top end of the pressing plate 6-2 is provided with a plurality of special-shaped holes 6-14 uniformly distributed along the circumferential direction of the pressing plate, each special-shaped hole 6-14 comprises a large end and a small end, the large end and the small end of each special-shaped hole 6-14 are both in an incomplete circular hole structure, the diameter of the large end of each special-shaped hole 6-14 is larger than that of the small end of each special-shaped hole 6-14, the large end of each special-shaped hole 6-14 and the small end of each special-shaped hole 6-14 are in transition through a rectangular hole, and the pressing plate 6-2 is rotated to enable the connecting piece to be located at the small end of each special-shaped hole 6-14.

As shown in fig. 1, in this embodiment, the bottom end of the chuck 6-6 is connected with a connecting disc 6-7, the connecting disc 6-7 and the chuck 6-6 are connected into a whole through a screw, the bottom end of the connecting disc 6-7 is provided with a positioning step, the positioning step is located in the center of the connecting disc 6-7, and usually, a working turntable on a grinding machine needs to rotate to drive the whole fixture to rotate, so that the spherical sealing surface of the valve seat 6-3 is conveniently ground, and therefore, the connecting disc 6-7 in this embodiment is conveniently connected with the working turntable on the grinding machine.

The specific implementation process is as follows: the valve seat 6-3 is placed on the tool base 6-5, the clamping jaws 6-15 on the chuck 6-6 are located in the inner hole of the valve seat 6-3, the positions of the clamping jaws 6-15 are adjusted, the clamping jaws 6-15 support the inner hole of the valve seat 6-3, the clamping jaws 6-15 can clamp an outer circle in the actual operation process, but the force is not large when the outer circle of the valve seat 6-3 is clamped, and only the positioning effect is achieved.

Adjusting the position of a T-shaped groove bolt 6-4 in a T-shaped groove 6-9, then aligning the large end of a special-shaped hole 6-14 on a pressing plate 6-2 with the T-shaped groove bolt 6-4, then aligning a groove 6-13 at the lower part of the pressing plate 6-2 with the excircle of a valve seat 6-3 and pressing the valve seat 6-3, rotating the pressing plate 6-2 to enable the small end of the special-shaped hole 6-14 to be in contact with the T-shaped groove bolt 6-4, finally screwing a nut 6-1 on the T-shaped groove bolt 6-4 to press the pressing plate 6-2, thereby pressing the valve seat 6-3, and at the moment, finishing the installation of the valve seat 6-3.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a grinding machine anchor clamps structure, includes the chuck, be provided with the jack catch on the chuck, its characterized in that: the clamping device is characterized by further comprising a tool base and a pressing plate, wherein the pressing plate is detachably connected with the tool base, a through hole is formed in the pressing plate, the tool base is connected with the top end of the chuck, clamping grooves are formed in the tool base, the number of the clamping grooves is the same as that of the clamping jaws, and the clamping jaws on the chuck penetrate through the clamping grooves and can move in the clamping grooves.

2. A grinder jig structure as claimed in claim 1, wherein: the bottom of the pressing plate is provided with a circular groove.

3. A grinder jig structure as claimed in claim 1, wherein: be equipped with the connecting piece between clamp plate and the frock base, set up a plurality of T type grooves that distribute along its circumference on the frock base, a plurality of special-shaped holes that distribute along its circumference are seted up on the top of clamp plate, special-shaped hole includes main aspects and tip, and the main aspects diameter in special-shaped hole is greater than the tip diameter in special-shaped hole, and rotatory clamp plate makes the connecting piece be located the tip in special-shaped hole.

4. A grinder jig structure as claimed in claim 1, wherein: the bottom of the tool base is provided with a limiting groove, and the limiting groove can be clamped at the top end of the chuck.

5. A machine tool fixture construction as claimed in claim 4, wherein: a plurality of screw holes distributed along the circumferential direction of the tool base are formed in the tool base.

6. A grinder jig structure as claimed in claim 1, wherein: the bottom of chuck is connected with the connection pad, the bottom of connection pad is equipped with the location step.