CN212857787U - Clamping device is installed additional to sleeping carriage sheet metal thickness surplus machine - Google Patents

Abstract

The utility model provides a sleeping carriage sheet metal thickness surplus machine adds dress clamps and puts, including fixed dress cardboard (1), interior casting die (2) and cut off clamping ring (3), fixed dress cardboard (1) is the column, and interior casting die (2) have annular clamping ring (21), are provided with stationary dog (22) in the outside of clamping ring (21), have the screw on stationary dog (22), fix stationary dog (22) on fixed dress cardboard (1) through the bolt. Sleeping carriage sheet thickness surplus machine install additional and clamp the device, can realize that the processing of sheet thickness surplus is got rid of on ordinary sleeping carriage lathe, and the finished product sheet metal surface precision after the processing is high, thickness size, marginal size are good.

Description

Clamping device is installed additional to sleeping carriage sheet metal thickness surplus machine

Technical Field

The utility model relates to a dress clamps the device, especially a sleeping carriage sheet metal thickness surplus machine installs additional and clamps the device, belongs to the machining field.

Background

When the nuclear power equipment is used, part of holes of the equipment can be sealed, the thin plate can be attached to the equipment holes in the sealing process, and due to the fact that the requirements of different working conditions on the thickness and the size of the thin plate are different, the thin plate cannot be manufactured in advance and needs to be machined on site.

In general, a thick steel plate is removed by a machine tool to form a thin plate. However, since the thickness of the steel plate is thin (the thickness of the thin plate is about 3mm), the steel plate is very easy to deform when the common sleeper is used for processing, so that the processing cannot be finished, and a special machine tool needs to be customized for processing.

In addition, in nuclear power equipment, strict requirements are required on the surface roughness of the thin plate, in the turning process of the thin plate, due to the fact that a workpiece is thin, the workpiece is easy to deform when being clamped, vibration can occur in the turning process along with the removal of the allowance of the thin plate, the thickness surface roughness of the thin plate is increased, the yield is low, and meanwhile potential safety hazards are brought.

Therefore, it is necessary to design a clamping device for the sheet thickness allowance machine of the common sleeping car.

Disclosure of Invention

In order to solve the above problems, the inventor of the present invention has conducted intensive research and designed a clamping device capable of removing the thickness allowance of a thin plate on a common sleeping car, which comprises a fixing clamping plate 1, an inner pressing piece 2 and a cutting press ring 3,

the fixing clamping plate 1 is columnar, a plurality of threaded holes 11 are formed in the fixing clamping plate 1 so as to fix the thin plate to be processed and the internal pressure piece 2 through bolts,

the inner pressing piece 2 is provided with an annular pressing ring 21, a fixing claw 22 is arranged on the outer side of the pressing ring 21, a screw hole is formed in the fixing claw 22, the fixing claw 22 is fixed on the fixing clamping plate 1 through a bolt,

the section of the cutting press ring 3 is circular, and the outer diameter of the cutting press ring is 20-30 mm smaller than the outer diameter of a finished product thin plate.

The thickness of the fixing clamping plate 1 is not less than 40 mm.

And a groove matched with a clamping jaw of a sleeping car is arranged at the edge of the fixed clamping plate 1.

A plurality of screw holes 11 are arranged annularly, and the annular is coaxial with fixed dress cardboard 1.

The outer diameter of the fixing clamping plate 1 is 20-60 mm larger than the outer diameter of the steel plate to be processed.

The distance from the threaded hole 11 to the axis of the fixed clamping plate 1 is 20-60 mm larger than the outer diameter of the finished thin plate.

The inner diameter of the pressing ring 21 is 300-320 mm, and the outer diameter is 400-420 mm.

The cutting press ring 3 is of a hollow design.

According to the utility model provides a sleeping carriage sheet metal thickness surplus machine adds and installs clamping device and machine method with, has following beneficial effect:

(1) the thickness allowance of the thin plate can be machined and removed on a common sleeping car machine tool;

(2) the device has low manufacturing cost and convenient operation;

(3) the finished sheet after processing has high surface precision, and excellent thickness dimension and edge dimension.

Drawings

FIG. 1 is a schematic diagram of a fixed clamping plate structure of a clamping device for a sleeper thin plate thickness allowance machine in a preferred embodiment;

FIG. 2 is a schematic diagram showing the structure of an internal pressing member of the clamping device for the sleeper thin plate thickness allowance machine in a preferred embodiment;

FIG. 3 shows a side view of FIG. 2;

FIG. 4 is a schematic diagram showing a cut-off press ring structure of a clamping device of a sleeper thin plate thickness allowance machine in a preferred embodiment;

fig. 5 is a diagram showing the installation effect in step S1 in the method for machining the sheet thickness allowance of the sleeping car according to the preferred embodiment;

fig. 6 is a diagram showing the installation effect in step S2 in the method for machining the sheet thickness allowance of the sleeping car according to the preferred embodiment;

fig. 7 is a diagram showing the mounting effect in step S3 in the method for machining the sheet thickness allowance of the sleeper vehicle according to the preferred embodiment;

fig. 8 shows a schematic view of a preferred embodiment of a sleeping car lathe tool.

The reference numbers illustrate:

1-fixing a clamping plate;

11-a threaded hole;

2-internal pressing piece;

21-a pressure ring;

22-fixed jaw;

3, cutting off the compression ring;

41 a cutter bar;

42 blades.

Detailed Description

The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention, as illustrated in the accompanying drawings.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The utility model provides a sleeping carriage sheet metal thickness surplus machine installs additional and clamps device, press 2 and cut off clamping ring 3 in fixing device cardboard 1, through the dress card device will treat that the processing steel sheet is installed at the sleeping carriage machine tooling, obtain the finished product sheet metal.

The utility model discloses in, it is the circular shape flat board to wait to process steel sheet and finished product sheet metal, wherein waits to process steel sheet cross-sectional diameter and thickness and all is greater than the finished product sheet metal, and the thickness of finished product sheet metal is 1 ~ 4 mm.

The fixing clamping plate 1 is columnar, as shown in fig. 1, the thickness of the fixing clamping plate is not less than 40mm, and the fixing clamping plate is made of steel plates and provides enough supporting rigidity for the steel plates to be processed.

In a preferred embodiment, the thickness of the fixing clamping plate 1 is 40-60 mm, so that the steel plate to be processed can be supported by sufficient rigidity, the requirement on the torque of a machine tool is reduced, and the adaptability is wider.

In a preferred embodiment, at the edge of the fixed clamping plate 1, a groove matching with the sleeping car jaw is provided, so that it can be more firmly fixed on the sleeping car jaw.

Be provided with a plurality of screw holes 11 on the fixed dress cardboard 1 for wait to process the sheet metal and press piece 2 in can be through the bolt fastening on fixed dress cardboard 1, preferably, a plurality of screw holes 11 are the annular and arrange, and the annular is with the axle center with fixed dress cardboard 1, makes and waits to process the steel sheet atress even.

Further, the number of the threaded holes 11 is 9, wherein 6 threaded holes 11 are used for fixing a steel plate to be processed, and the 6 threaded holes 11 are uniformly distributed on the ring; 3 threaded holes 11 are also uniformly distributed on the ring for fixing the inner pressing piece 2.

According to the utility model discloses, fixed device cardboard 1's external diameter is greater than and treats processing steel sheet external diameter 20 ~ 60mm, because in the machining process, treats that the processing steel sheet can be high-speed rotatory, and fixed device cardboard 1's external diameter is greater than and treats processing steel sheet external diameter, and the windage that can effectively reduce high-speed rotatory production treats processing steel sheet striking and produces treats processing steel sheet tremble phenomenon to improve sheet metal machining precision and surface smoothness.

The distance from the threaded hole 11 to the axis of the fixed clamping plate 1 is greater than 20-60 mm, preferably 20-30 mm, of the outer diameter of a finished product thin plate, and the inventor finds that the vibration of a steel plate to be machined in the machining process can be effectively reduced by the aid of the fixed distance of 20-30 mm.

The inventor finds that in the process of removing the machining allowance of the steel plate to be machined, along with the reduction of the thickness of the steel plate, the rigidity of the steel plate is reduced, the steel plate can vibrate, even if the number of the threaded holes 11 is increased and the bolt torque is increased, vibration cannot be effectively reduced, the machining precision is seriously influenced, and the dimension of the machined steel plate is out of tolerance. How to solve the vibration problem that the steel sheet attenuation appears is the utility model discloses a difficult point is at.

In the present invention, the inventors realized suppression of vibration by providing the inner pressing member 2, thereby realizing machining of the thin steel sheet.

The inner pressing piece 2 is provided with an annular pressing ring 21, a fixing claw 22 is arranged on the outer side of the pressing ring 21, a screw hole is formed in the fixing claw 22, and the fixing claw 22 is fixed on the fixing clamping plate 1 through a bolt, so that the inner pressing piece 2 and the fixing clamping plate 1 are fixed, as shown in fig. 2 and 3.

Further, the inner diameter of the pressing ring 21 is 300-320 mm, the outer diameter is 400-420 mm, and the inventor finds that when a turning tool is used for machining and cutting a steel plate from the outer side to the inner side of the steel plate to be machined, when the turning tool is used for cutting the steel plate to a position which is about 250-300 mm away from the threaded hole 11, the fixing clamping plate 1 cannot provide rigid support well, and the surface size is out of tolerance due to continuous machining. At this time, the pressing ring 21 is installed on the steel plate to be processed, the steel plate to be processed is secondarily fixed, further more supporting force is provided for the steel plate to be processed, and the vibration phenomenon of the steel plate to be processed is eliminated.

In a preferred embodiment, the fixing claws 22 have a rectangular cross section, and 3 fixing claws are uniformly distributed around the pressing ring 21, so that the pressing ring 21 can uniformly press the steel plate to be processed.

After the inner pressing piece 2 is installed, machining can be continuously carried out on the steel plate to be machined, the steel plate within the inner ring of the inner pressing piece 2 is cut, after the steel plate is cut, the inner pressing piece 2 is detached, the steel plate is cut into a round shape, and then a finished product thin plate can be obtained.

Because the thickness of the cut steel plate is thin, if the steel plate is directly cut by using a turning tool, the vibration during cutting can cause the phenomena of uneven edge, burrs, notches and the like of the thin steel plate

And cutting the steel plate from the fixed clamping plate 1 by using a cutting press ring 3, wherein the section of the cutting press ring 3 is circular, and the outer diameter of the cutting press ring is 20-30 mm smaller than that of the finished thin plate to be obtained so as to better support the steel plate, as shown in figure 4.

According to the utility model discloses, it compresses tightly fixedly through the sleeping carriage thimble to cut off clamping ring 3, the sleeping carriage thimble compresses tightly and cuts off 3 central points of clamping ring, in an preferred embodiment, cut off the fretwork design that clamping ring 3 has the symmetry to reduce the weight that cuts off clamping ring 3, the dress card of being convenient for.

The utility model discloses in, the lathe tool has cutter arbor 41 and blade 42 for the sleeping carriage, cutter arbor 41 cross-section is trapezoidal, and the blade cross-section is triangle-shaped, and blade 42 is installed on the top of cutter arbor 41, as shown in fig. 8.

In a more preferred embodiment, the cutting insert 42 is rotatably mounted on the tool holder 41, so that three points of the cutting insert 42 can be used as tool tips, thereby improving the use efficiency of the turning tool.

More preferably, the blade 41 is a coated blade to obtain better machining effect.

The utility model provides a pair of sleeping carriage sheet metal thickness surplus machine adds device, according to following method processing, will wait to process the steel sheet and divide into skin and inlayer, get rid of skin, inlayer thickness surplus in proper order after fixing steel sheet skin and inlayer respectively through above-mentioned dress card device at the in-process that the thickness surplus was removed in the machine tooling, obtain the finished product sheet metal that surface effect is good, thickness size is good, specifically, including following step:

s1, fixing the steel plate to be processed on the fixed clamping plate 1, and machining to remove the thickness allowance of the outer layer area of the steel plate to be processed;

s2, mounting the inner pressing piece 2, and machining to remove the thickness allowance of the inner layer area of the steel plate to be machined;

and S3, removing the inner pressing piece 2, installing the cutting press ring 3, and cutting the steel plate by using a cutting lathe tool to obtain a finished product thin plate.

Dividing the steel plate to be processed into cutting processes according to the size requirement of a finished product sheet, wherein the inner layer refers to an area with the radius of 1/3-2/3 of the outer diameter of a sheet workpiece drawing, and preferably 1/2 of the outer diameter of the sheet workpiece drawing; the outer layer refers to the area between the outer diameter of the inner layer and the threaded hole 11.

In step S1, the method further includes the following sub-steps:

s11, processing a through hole corresponding to the fixed clamping plate 1 on the steel plate with the processing function;

s12, fixing the steel plate to be processed on the fixing clamping plate 1 by using bolts, mounting the fixing clamping plate 1 on a jaw of a sleeping car, and performing meter making and alignment;

and S13, machining to remove the thickness allowance of the outer layer area of the steel plate to be machined, as shown in figure 5.

Preferably, in the step S13, because the thickness of the steel plate to be processed is thick, low-speed processing can be adopted, and the rotating speed of the bed-lying spindle is 70-120 r/min, more preferably 90 r/min; the feed rate is 0.15mm to 0.2mm, and more preferably 0.18 mm.

In the process of removing the thickness allowance of the outer layer area, the steel plate has enough rigid support due to the fact that the thickness of the central area of the steel plate is thick and the outer ring of the steel plate is tightly fixed in the threaded hole 11, vibration cannot occur, and the surface precision and the thickness size of the outer layer of the steel plate are guaranteed.

In step S2, by pressing the inner pressing member 2 so that the steel plate is fixed again, the vibration of the steel plate when the thickness allowance of the inner layer area is removed is greatly reduced, and the surface accuracy and the thickness dimension of the inner layer of the steel plate are ensured, as shown in fig. 6.

In step S2, because the steel plate is partially thinned, the steel plate is processed at a rotating speed higher than that in step S13, so that the vibration of the steel plate can be effectively reduced, preferably, the rotating speed of the bed-ridden main shaft is 100-170 r/min, and more preferably 140 r/min; the feed rate is 0.15mm to 0.2mm, and more preferably 0.18 mm.

In step S3, the cutting ring 3 is pressed against the cut steel plate by the horizontal lathe thimble, so that the steel plate has no vibration during cutting into a finished thin plate, and the edge processing precision of the steel plate is ensured, as shown in fig. 7.

According to the sleeper thin plate thickness surplus machine-adding method, sheet surface roughness after the processing can be less than 32um (Ra value), thickness tolerance is little, the edge is level and smooth, satisfies nuclear power equipment completely and uses.

Examples

Example 1

A thin plate with the diameter of 470mm and the thickness of 3mm is processed by adopting a model CW6163C lying in bed.

The fixed clamping plate of the clamping device is 50mm in thickness, 570mm in outer diameter and 500mm in inner diameter, 9 threaded holes are formed in the fixed clamping plate, 6 threaded holes are used for fixing a steel plate to be processed, 3 threaded holes are used for fixing the inner pressing piece 2, and the distance from each threaded hole to the shaft center of the fixed clamping plate is 500 mm; the inner diameter of the compression ring is 300mm, and the outer diameter of the compression ring is 400 mm; the outer diameter of the cutting press ring is 450 mm.

The diameter of the steel plate to be processed is 550mm, and the thickness of the steel plate to be processed is 5 mm.

The lathe turning tool is an indexable machining turning tool, and is shown in figure 8.

The processing process is as follows:

installing a steel plate to be processed on a horizontal bed through a fixed clamping plate, and removing the thickness allowance of the steel plate to be processed in the region of phi 250-phi 490mm after the table is drawn and aligned, wherein the rotating speed is 90 r/min; the feed amount was 0.18 mm.

Installing a compression inner pressing piece, reinforcing the cut steel plate again, and removing the thickness allowance of the area of the steel plate phi 0-phi 250mm at the rotating speed of 140 r/min; the feed rate was 0.18 mm.

And detaching the inner pressing piece, installing the cutting press ring, pressing the cutting press ring on the cut steel plate through a horizontal lathe thimble, and cutting the steel plate by using a cutting lathe tool to obtain a finished product thin plate.

The obtained finished sheet is detected, and the detection results are as follows:

the thickness of different points of the thin plate is detected by using a pi ruler, the thickness is uniformly measured, and the detection result is shown in the table I.

Watch 1

2.994	2.994	3.003
			2.999	2.999	3.009
2.993	2.991	3.008
			2.997	3.005	3.008
2.991	3.009	3.010
			2.992	3.006	2.995
3.009	3.003	3.006
			3.003	2.993	2.994
2.995	3.008	3.002
			2.999	3.007	2.990
2.992	2.993	2.993
			3.002	3.008	3.009
2.995	2.999	2.991

As can be seen from the table, the difference in thickness of the finished sheet after processing is within 0.02 mm.

The sheet surface roughness was measured using a roughness meter, and the measurement result was Ra3.2. mu.m.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate the position or positional relationship based on the operation state of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention has been described in detail with reference to the specific embodiments and the exemplary embodiments, but the description should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and embodiments thereof without departing from the spirit and scope of the present invention, and all fall within the scope of the present invention. The protection scope of the present invention is subject to the appended claims.

Claims (9)

1. A clamping device for a machine for machining the thickness allowance of a thin plate of a sleeping car is characterized by comprising a fixing clamping plate (1), an inner pressure piece (2) and a cutting press ring (3),

the fixing clamping plate (1) is columnar, a plurality of threaded holes (11) are formed in the fixing clamping plate (1) so as to fix the thin plate to be processed and the internal pressure piece (2) through bolts,

the thickness of the fixing clamping plate (1) is not less than 40mm,

the inner pressing piece (2) is provided with an annular pressing ring (21), a fixing claw (22) is arranged on the outer side of the pressing ring (21), a screw hole is formed in the fixing claw (22), the fixing claw (22) is fixed on the fixing clamping plate (1) through a bolt,

the section of the cutting press ring (3) is circular, and the outer diameter of the cutting press ring is 20-30 mm smaller than the outer diameter of a finished product thin plate.

2. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the edge of the fixing clamping plate (1) is provided with a groove matched with a clamping jaw of a sleeping car.

3. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

a plurality of screw holes (11) are arranged annularly, and the annular is coaxial with the fixed clamping plate (1).

4. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the number of the threaded holes (11) is 9, and 6 of the threaded holes are used for fixing a steel plate to be machined; 3 are used for fixing the inner pressing piece (2).

5. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the outer diameter of the fixing clamping plate (1) is 20-60 mm larger than the outer diameter of the steel plate to be processed.

6. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the distance from the threaded hole (11) to the axis of the fixed clamping plate (1) is greater than 20-60 mm of the outer diameter of the finished thin plate.

7. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the inner diameter of the compression ring (21) is 300-320 mm, and the outer diameter is 400-420 mm.

8. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the cross section of the fixed claw (22) is rectangular, and the number of the fixed claws is 3, and the fixed claws are uniformly dispersed around the pressing ring (21).

9. The sleeper thin plate thickness allowance machining clamp device as claimed in claim 1,

the cutting press ring (3) is of a hollow design.

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