CN213195672U

CN213195672U - Special tool for turning end face of valve body

Info

Publication number: CN213195672U
Application number: CN202021691703.0U
Authority: CN
Inventors: 秦雄飞; 唐兵; 杨增伟
Original assignee: Sichuan Chengdu Air Seperation Plant Valve Co ltd
Current assignee: Sichuan Chengdu Air Seperation Plant Valve Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-05-14
Anticipated expiration: 2030-08-14

Abstract

The utility model provides a special tool for turning the end face of a valve body, which comprises a connecting disc, a base, a transmission assembly, a first positioning assembly and a second positioning assembly, wherein the base is fixedly connected with the connecting disc, the transmission assembly is arranged at the upper part of the side surface of the base, the first positioning assembly is arranged at the lower part of the side surface of the base and is used for positioning excircles at the left end and the right end of the valve body, and the second positioning assembly is connected with the base in a sliding way through the transmission assembly and is used for; the second positioning assembly comprises a tailstock and a mandrel, the tailstock is connected with the base in a sliding mode and is in threaded connection with the transmission assembly, and the mandrel is fixedly connected with the tailstock through a tightening jackscrew and is located right above the first positioning assembly; when the tailstock slides downwards, the mandrel can be inserted into the valve rod mounting hole of the valve body and tightly presses the valve body. The utility model discloses a first, two locating components that set up mutually support, fix a position both ends excircle, valve rod mounting hole about the valve body respectively, and positioning accuracy is high, can guarantee that the valve body size precision after the processing is stable, and the uniformity is good.

Description

Special tool for turning end face of valve body

Technical Field

The utility model relates to a lathe work technical field, concretely relates to special frock of valve body end face turning.

Background

The cutoff valve is also called a closed circuit valve and is used for connecting or cutting off a medium in a pipeline. The low-temperature emergency cut-off valve is a cut-off valve suitable for the on-off of pipelines with medium temperature below-100 ℃, and generally comprises a valve body, an opening and closing part in the valve body, a valve rod and a valve cover structure for guiding the valve rod out.

As shown in fig. 1, the valve body of the low-temperature emergency shut-off valve belongs to a special-shaped piece, the left end and the right end are medium flow through holes, and a hole with an upward middle part is a valve rod mounting hole; the end faces and the spigot at the left end and the right end of the valve body can be used only by turning. At present, the end faces and the rabbets at the left end and the right end of the valve body are turned by adopting the traditional three-jaw chuck to clamp the valve body, but the positioning accuracy of the clamping mode is not high, the symmetry degree of the end faces and the rabbets at the left end and the right end of the valve body and the central line of a valve rod mounting hole is difficult to guarantee, the size accuracy of the machined valve body is unstable, even the situation of scrapping is easy to occur, and the three-jaw chuck consumes more time and has low efficiency, so that the three-jaw chuck is not suitable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art, the utility model aims at providing a special frock of valve body end face turning, positioning accuracy is high, can guarantee that the valve body size precision after the processing is stable, and the clamping of valve body is quick moreover, dismantle conveniently, efficient.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of special frock of valve body facing, include:

the connecting disc is connected with a lathe shaft neck;

the base is fixedly connected with the connecting disc;

the transmission assembly is arranged on the upper part of the side surface of the base;

the first positioning assembly is arranged at the lower part of the side surface of the base and is used for positioning the excircles at the left end and the right end of the valve body; and

the second positioning assembly is connected with the base in a sliding mode through the transmission assembly and used for positioning the valve rod mounting hole of the valve body;

the second positioning assembly comprises a tailstock and a mandrel, the tailstock is connected with the base in a sliding mode and is in threaded connection with the transmission assembly, and the mandrel is fixedly connected with the tailstock through a tightening jackscrew and is located right above the first positioning assembly; when the tailstock slides downwards, the mandrel can be inserted into a valve rod mounting hole of the valve body and tightly presses the valve body.

Further, the dabber includes the axostylus axostyle and fixes the axle sleeve of locating on the axostylus axostyle, the axostylus axostyle diameter is less than the aperture of valve body valve rod mounting hole, the axle sleeve external diameter equals the internal diameter of valve body valve rod mounting hole tang.

Furthermore, a clamping groove and a sliding rail are respectively and symmetrically arranged on two side surfaces of the tailstock adjacent to the core shaft in sequence, the clamping groove and the sliding rail are respectively parallel to the axial direction of the core shaft, and the tailstock is connected with the base in a sliding manner through the sliding rail; the side, back to the dabber, of the tailstock is provided with a spiral groove in a concave mode, and the tailstock is in threaded connection with the transmission assembly through the spiral groove.

Further, the second positioning assembly further comprises a V-shaped pressing block fixedly connected with the tailstock, and the V-shaped pressing block is located between the core shaft and the clamping groove and used for positioning an outer circle of one end of the valve body.

Furthermore, the transmission assembly comprises a screw and two pressing plates, a vertical arc-shaped groove is formed in the middle of the upper portion of the side face of the base, and the screw can be freely rotatably placed in the arc-shaped groove and is in threaded connection with the spiral groove; the two pressing plates are symmetrically arranged on the bases on two sides of the arc-shaped groove to form a channel for the tailstock to slide, the opposite side faces of the two pressing plates are respectively provided with a convex strip in sliding fit with the clamping groove, the convex strip and the arc-shaped groove are separated to form a sliding groove, and the sliding groove is in sliding fit with the sliding rail.

Further, the screw rod is double-thread screw, the middle part of the double-thread screw is rotationally clamped in the arc-shaped groove.

Further, the transmission assembly further comprises a limiting block, the limiting block vertically penetrates through the arc-shaped groove and is fixedly connected with the base through a screw, an arc-shaped bayonet is arranged at the front end of the limiting block, and the middle of the screw rod is rotationally connected with the ground in the arc-shaped bayonet.

Furthermore, the first positioning assembly comprises a positioning seat, the positioning seat is fixedly connected with the lower portion of the side face of the base through a screw, two V-shaped support blocks are arranged at the upper end of the positioning seat at intervals and are respectively used for positioning the excircles at the left end and the right end of the valve body, and one V-shaped support block corresponds to the V-shaped pressing block.

Furthermore, waist-shaped holes and vertical slideways positioned between the waist-shaped holes are symmetrically arranged on one surface, which is in contact with the side surface of the base, of the positioning seat, and the positioning seat is connected with the side surface of the base through bolts after penetrating through the waist-shaped holes through screws; two positioning pins are slidably mounted in the vertical slide ways and fixed on the side faces of the base.

Furthermore, the first positioning component also comprises a supporting block, and the supporting block is fixedly connected with the bottom of the base and abuts against the lower end of the positioning seat.

Compared with the prior art, the utility model provides a special frock of valve body facing has following beneficial effect:

1. the first positioning assembly and the second positioning assembly are matched with each other to respectively position the excircle of the left end and the excircle of the right end of the valve body and the valve rod mounting hole, so that the positioning precision is high, the dimensional precision of the processed valve body can be ensured to be stable, and the consistency is good;

2. the arranged pressure is arranged on the excircle at one end of the valve body, so that the workpiece can be prevented from rotating, the stability in the machining process is effectively ensured, and the risk of pressure damage to the surface of a product is avoided;

3. through the screw transmission of the screw rod, the valve body is fast to clamp and disassemble, the efficiency is high, and the special tool is suitable for mass production of the valve body; meanwhile, the second positioning assembly cannot be loosened through the limiting of the limiting block, and the stability of the valve body in the machining process is guaranteed.

Drawings

FIG. 1 is a schematic perspective view of a valve body;

fig. 2 is an exploded schematic view of the three-dimensional structure of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the clamping valve of the present invention;

FIG. 4 is a schematic view of the three-dimensional structure of the clamped valve body of the present invention;

FIG. 5 is a perspective view of a second positioning assembly;

FIG. 6 is a schematic perspective view of the assembled base and platen;

FIG. 7 is a perspective view of the base;

fig. 8 is a schematic perspective view of the positioning seat.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 2-8, the utility model provides a special frock of valve body facing, include:

a connecting disc 100 connected with a lathe journal;

a base 200 fixedly connected to the connection pad 100;

a driving assembly 300 installed at an upper portion of a side of the base 200;

the first positioning assembly 400 is arranged at the lower part of the side surface of the base 200 and is used for positioning the excircles at the left end and the right end of the valve body 600; and

the second positioning assembly 500 is connected with the base 200 in a sliding mode through the transmission assembly 300 and is used for positioning a valve rod mounting hole of the valve body 600;

the second positioning assembly 500 includes a tailstock 510 and a spindle 520, the tailstock 510 is slidably connected to the base 200 and is threadedly connected to the transmission assembly 300, and the spindle 520 is fixedly connected to the tailstock 510 through a tightening jackscrew and is located right above the first positioning assembly 400; when the tailstock 510 slides downward, the spindle 520 may be inserted into a stem mounting hole of the valve body 600 and compress the valve body 600.

During operation, put valve body 600 on first locating component 400, the both ends excircle is supported by first locating component 400 about valve body 600, as shown in fig. 3, later second locating component 500 slides downwards, make dabber 520 insert in the valve rod mounting hole of valve body 600 and compress tightly valve body 600, as shown in fig. 4, thereby realize the fixed and location of valve body 600, then process one terminal surface of valve body 600 through the lathe tool, slide second locating component 500 on the completion back in order to loosen valve body 600, overturn 180 with it, repeat above-mentioned operation and fix valve body 600, so that the lathe tool processes another terminal surface of valve body 600. Through the cooperation of first, two locating component, fix a position both ends excircle, valve rod mounting hole about the valve body respectively, positioning accuracy is high, can guarantee that the valve body size precision after the processing is stable, and the uniformity is good. Specifically, the connecting disc 100 is fixed to a lathe journal (not shown) through screw connection in a taper fit manner, so that the special tool can be ensured to be coincident with the center of a lathe spindle, and is firm and reliable, and the rigidity and the convenience in disassembly and assembly can be ensured during product processing.

Further, in this embodiment, as a preferred implementation structure, as shown in fig. 2, the spindle 520 includes a shaft 521 and a bushing 522 fixedly disposed on the shaft 521, the diameter of the shaft 521 is smaller than the diameter of the valve stem mounting hole of the valve body 600, and the outer diameter of the bushing 522 is equal to the inner diameter of the spigot of the valve stem mounting hole of the valve body 600.

As shown in fig. 2 and fig. 5, two side surfaces of the tailstock 510 adjacent to the spindle 520 are respectively and symmetrically provided with a slot 511 and a slide rail 512 in sequence, the slot 511 and the slide rail 512 are respectively parallel to the spindle 520 in the axial direction, and the tailstock 510 is slidably connected with the base 200 through the slide rail 512; the side of the tailstock 510 opposite to the mandrel 520 is recessed with a spiral groove 513, and the tailstock 510 is in threaded connection with the transmission assembly 300 through the spiral groove 513.

In one embodiment, the second positioning assembly 500 further includes a V-shaped pressing block 530 fixedly connected to the tailstock 510, and the V-shaped pressing block 530 is located between the mandrel 520 and the clamping groove 511 for positioning an outer circle of one end of the valve body 600. After the tailstock 510 slides downwards, the V-shaped pressing block 530 presses on the excircle at one end of the valve body 600, and the V-shaped pressing block, the mandrel 520 and the first positioning assembly 400 together fix and position the valve body 600, so that the workpiece can be prevented from rotating, the stability in the machining process is effectively ensured, and the risk of pressure injury on the surface of a product is avoided.

Further, in this embodiment, as a preferred implementation structure, the transmission assembly 300 includes a screw 310 and two pressing plates 320, a vertical arc-shaped groove 210 is centrally opened on the upper portion of the side surface of the base 200, and the screw 310 is freely rotatably placed in the arc-shaped groove 210 and is in threaded connection with the spiral groove 513; the two pressing plates 320 are symmetrically arranged on the base 200 at two sides of the arc-shaped groove 210 to form a channel for the tailstock 510 to slide, the opposite side surfaces of the two pressing plates 320 are respectively provided with a convex strip 321 in sliding fit with the clamping groove 511, the convex strip 321 and the arc-shaped groove 210 are separated to form a sliding groove 220, and the sliding groove 220 is in sliding fit with the sliding rail 512.

As shown in fig. 2, the screw 310 is a double-threaded screw, and the middle portion of the double-threaded screw is rotatably engaged with the arc-shaped groove 210.

In one embodiment, the transmission assembly 300 further includes a limiting block 330, the limiting block 330 vertically penetrates through the arc-shaped groove 210 and is fixedly connected to the base 200 through a screw, an arc-shaped bayonet 331 is disposed at the front end of the limiting block 330, and the middle portion of the screw rod 310 is rotatably clamped in the arc-shaped bayonet 331. The screw 310 is rotated to drive the tailstock 510 to slide downwards, so as to fix and position the valve body 600, and after the valve body 600 is processed, the valve body 600 needs to be taken down and the screw 310 is rotated reversely. Through the screw transmission of the screw 310, the valve body 600 is fast to clamp and disassemble and high in efficiency, so that the special tool is suitable for mass production of the valve body 600; meanwhile, the second positioning assembly 500 cannot be loosened through the limitation of the limiting block 330, and the stability of the valve body 600 in the machining process is ensured.

Further, in this embodiment, as a preferred implementation structure, as shown in fig. 2 and 8, the first positioning assembly 400 includes a positioning seat 410, the positioning seat 410 is fixedly connected to the lower portion of the side surface of the base 200 through a screw, two V-shaped support blocks 411 are spaced at the upper end of the positioning seat 410, and are respectively used for positioning the outer circles of the left end and the right end of the valve body 600, wherein one V-shaped support block 411 corresponds to the V-shaped pressing block 530.

As shown in fig. 8, waist-shaped holes 412 and vertical slideways 413 located between the waist-shaped holes 412 are symmetrically arranged on one surface of the positioning seat 410 contacting with the side surface of the base 200, and the positioning seat 410 is connected with the side surface of the base 200 by bolts after passing through the waist-shaped holes 412; two positioning pins 420 are slidably mounted in the vertical slide 413, and the positioning pins 420 are fixed on the side surface of the base 200. After the screws are loosened, the positioning seat 410 can be adjusted up and down under the guidance of the positioning pin 420 through the waist-shaped hole 412 and the vertical slideway 413, so that the left end and the right end of the valve body 600 are centered with the lathe spindle.

In one embodiment, the first positioning assembly 400 further includes a supporting block 430, and the supporting block 430 is fixedly connected to the bottom of the base 200 and abuts against the lower end of the positioning seat 410. Through supporting shoe 430, improved the joint strength of positioning seat 410 and base 200 to the stability of this special frock has been guaranteed.

In addition. The special tool is made of high-quality alloy steel materials with the hardness of 50-60 HRC, and is high in wear resistance and long in service life.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a special frock of valve body facing, its characterized in that includes:

the connecting disc is connected with a lathe shaft neck;

the base is fixedly connected with the connecting disc;

2. The special tool for turning the end face of the valve body according to claim 1, wherein the mandrel comprises a shaft rod and a shaft sleeve fixedly arranged on the shaft rod, the diameter of the shaft rod is smaller than the aperture of the valve body and valve rod mounting hole, and the outer diameter of the shaft sleeve is equal to the inner diameter of a spigot of the valve body and valve rod mounting hole.

3. The tool special for turning the end face of the valve body according to claim 1 or 2, wherein a clamping groove and a sliding rail are respectively and symmetrically arranged on two side faces of the tailstock adjacent to the core shaft in sequence, the clamping groove and the sliding rail are respectively and axially parallel to the core shaft, and the tailstock is connected with the base in a sliding manner through the sliding rail; the side, back to the dabber, of the tailstock is provided with a spiral groove in a concave mode, and the tailstock is in threaded connection with the transmission assembly through the spiral groove.

4. The special tool for turning the end face of the valve body according to claim 3, wherein the second positioning assembly further comprises a V-shaped pressing block fixedly connected with the tailstock, and the V-shaped pressing block is located between the mandrel and the clamping groove and used for positioning an excircle of one end of the valve body.

5. The tool special for turning the end face of the valve body according to claim 3, wherein the transmission assembly comprises a screw and two pressing plates, a vertical arc-shaped groove is formed in the middle of the upper portion of the side face of the base, and the screw can be freely rotatably placed in the arc-shaped groove and is in threaded connection with the spiral groove; the two pressing plates are symmetrically arranged on the bases on two sides of the arc-shaped groove to form a channel for the tailstock to slide, the opposite side faces of the two pressing plates are respectively provided with a convex strip in sliding fit with the clamping groove, the convex strip and the arc-shaped groove are separated to form a sliding groove, and the sliding groove is in sliding fit with the sliding rail.

6. The special tool for turning the end face of the valve body according to claim 5, wherein the screw is a double-threaded screw, and the middle part of the double-threaded screw is rotationally clamped in the arc-shaped groove.

7. The special tool for turning the end face of the valve body according to claim 5 or 6, wherein the transmission assembly further comprises a limiting block, the limiting block vertically penetrates through the arc-shaped groove and is fixedly connected with the base through a screw, an arc-shaped bayonet is arranged at the front end of the limiting block, and the middle of the screw rod is rotationally clamped in the arc-shaped bayonet.

8. The special tool for turning the end face of the valve body according to claim 4, wherein the first positioning assembly comprises a positioning seat, the positioning seat is fixedly connected with the lower portion of the side face of the base through a screw, two V-shaped support blocks are arranged at the upper end of the positioning seat at intervals and are respectively used for positioning excircles at the left end and the right end of the valve body, and one V-shaped support block corresponds to the V-shaped pressing block.

9. The special tool for turning the end face of the valve body according to claim 8, wherein waist-shaped holes and vertical slideways located between the waist-shaped holes are symmetrically arranged on one surface, which is in contact with the side face of the base, of the positioning seat, and the positioning seat is connected with the side face of the base through bolts after penetrating through the waist-shaped holes through screws; two positioning pins are slidably mounted in the vertical slide ways and fixed on the side faces of the base.

10. The special tool for turning the end face of the valve body according to claim 8 or 9, wherein the first positioning assembly further comprises a supporting block, and the supporting block is fixedly connected with the bottom of the base and abuts against the lower end of the positioning seat.