Jacket

Abstract

The utility model discloses a jacket. The clamping sleeve comprises a main body, the main body comprises a clamping end and a mounting part which are arranged in the first direction, and the mounting part is used for positioning the main body; the clamping end is provided with at least three clamping jaws which are sequentially arranged in the circumferential direction, a clamping cavity is defined by the inner wall faces of the at least three clamping jaws and used for clamping a workpiece, the side faces of the clamping jaws are corrugated faces, and in every two adjacent clamping jaws, the two oppositely-arranged corrugated faces are arranged in a fluctuating and staggered mode, and a gap is reserved between the two corrugated faces. A slit extending in a corrugated line in a first direction is defined. According to the clamping sleeve, the machining quality of a workpiece is improved, and the rate of finished products is increased.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical processing equipment, and in particular to a jacket. Background Art

[0002] The lathe fixture clamps the workpiece through the jaws. During the machining process, the chips generated when the tool cuts the workpiece easily enter the gap between the jaws, causing the workpiece to be clamped or scratched due to the presence of chips when the fixture clamps the workpiece again.

[0003] Typically, glue is used to seal the gap between the jaws to prevent chips from entering the jaws. However, after a period of use, the glue inside the gap can fall off due to the influence of water or cutting fluid. In this case, the gap between the jaws and the clamped workpiece is too large when the jaws are open. During automatic material removal, chips can easily enter the jaws, causing damage or scratches to the workpiece, resulting in a low yield rate. Utility Model Content

[0004] The purpose of the present application is to provide a clamping sleeve to improve the workpiece processing quality and increase the yield rate.

[0005] The technical solution of the present application provides a sleeve, comprising: a main body, the main body comprising a clamping end and a mounting portion arranged along a first direction, the mounting portion being used to position the main body; the clamping end is provided with at least three jaws arranged in sequence along the circumferential direction, the inner wall surfaces of at least three of the jaws define a clamping cavity, the clamping cavity is used to clamp a workpiece, the side surfaces of the jaws are corrugated surfaces, and in two adjacent jaws, the two relatively arranged corrugated surfaces are undulating and staggered with a spacing therebetween, defining a gap extending along the first direction with a corrugated line.

[0006] Optionally, in any of the corrugated surfaces, the number of wave crests and wave troughs is at least two.

[0007] Optionally, a circumferential distance between adjacent crests and troughs in the corrugated surface along the outer side surface of the clamping end is L, and 0.4 cm ≤ L ≤ 2 cm.

[0008] Optionally, an angle between a tangent direction of the slit opening on the end surface of the clamping end and the end surface of the clamping end is an acute angle.

[0009] Optionally, the clamping end includes an end portion and a limiting portion connected to each other, the end portion is located at the end of the clamping end; the outer diameter of the end portion is smaller than the outer diameter of the limiting portion to define a first limiting end face at the connection, and a second limiting end face is provided inside the mounting portion, and the first limiting end face is parallel to the second limiting end face.

[0010] Optionally, the slits are arranged with equal width along the extension direction.

[0011] Optionally, after the clamping cavity clamps the workpiece, the width of the clamping gap along the outer side surface of the clamping end is less than or equal to 0.5 mm.

[0012] Optionally, at least three connection holes are provided on the main body at a portion between the clamping end and the mounting portion along the first direction, and the at least three slits are connected to the at least three connection holes in a one-to-one correspondence.

[0013] Optionally, the number of the clamping jaws is four, and the four clamping jaws are arranged along the circumference of the main body.

[0014] Optionally, it also includes a conical sleeve, in which an installation cavity is provided, and the main body is at least partially provided in the installation cavity; the limiting portion includes a limiting side surface, which is a slope, and an adjustment slope is provided in the installation cavity, and the limiting side surface is in contact with the adjustment slope and can be adjusted to slide relative to each other.

[0015] The above technical solution has the following beneficial effects:

[0016] The clamping sleeve provided in the present application, by setting the gap between adjacent jaws as a corrugated gap, can effectively prevent the waste chips generated during the cutting process and other processing of the workpiece from entering between adjacent jaws, thereby preventing the workpiece from being pinched or scratched by the waste chips when the jaws clamp the workpiece again, thereby improving the workpiece processing quality and increasing the yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a jacket in one embodiment of the present application.

[0018] Figure 2 This is a schematic structural diagram of a cone sleeve in one embodiment of the present application.

[0019] Figure 3 This is an exploded view of the jacket installation structure in one embodiment of the present application.

[0020] Figure Numbers

[0021] 1-main body, 10-clamping end, 100-clamping claw, 101-clamping cavity, 102-clamping gap, 103-end head, 104-limiting part, 1040-limiting side, 105-first limiting end face, 11-installing part, 12-connecting hole.

[0022] 2-taper sleeve, 20-installation cavity, 200-adjustment slope.

[0023] 3-main shaft, 30-spindle head, 300-spindle hole, 31-spindle cover, 311-inner hole, 32-first screw, 33-second screw. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model will be further described below with reference to the accompanying drawings.

[0025] It is easy to understand that according to the technical solution of the present invention, a variety of structural methods and implementation methods can be replaced by those skilled in the art without changing the essential spirit of the present invention. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the utility model.

[0026] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to the structure shown in the drawings. They are relative concepts and may vary depending on the location and usage of the device. Therefore, these or other directional terms should not be interpreted as restrictive.

[0027] The present application provides a jacket, comprising a main body 1, wherein the main body 1 comprises a clamping end 10 and a mounting portion 11 arranged along a first direction, wherein the mounting portion 11 is used to position the main body 1. The mounting portion 11 can be clamped on a fixed base to limit the jacket. The first direction can be the length direction of the main body, which is similar to the length direction of the main body. When the main body 1 is Figure 1 In the case of the columnar structure shown, the first direction may also be the axial direction of the main body 1 .

[0028] The clamping end 10 is provided with at least three clamping jaws 100 arranged in sequence along the circumferential direction, and the inner wall surfaces of at least three clamping jaws 100 define a clamping cavity 101, and the clamping cavity 101 is used to clamp the workpiece. Figure 1 As shown, the side surfaces of the clamping jaws 100 are corrugated. In two adjacent clamping jaws 100, the opposing corrugated surfaces are staggered and spaced apart, defining a gap 102 extending along a first direction along a corrugated line. The corrugated line in the embodiment of the present application can be a function line such as a sine line or a cosine line, or a curve with varying heights of peaks and troughs.

[0029] Please refer to Figure 1 In two adjacent clamping jaws 100, the two oppositely arranged side surfaces are both corrugated surfaces. The undulating and staggered nature of the two corrugated surfaces means that in the two side surfaces with corrugated surfaces, the crest of one corrugated surface and the trough of the other corrugated surface are arranged opposite to each other, and a certain distance is left between the two adjacent corrugated surfaces to define a gap 102 extending along the corrugated line along the first direction.

[0030] In an optional embodiment of the chuck, the clamping cavity 101 is cylindrical, and the cylindrical workpiece is inserted into the clamping cavity 101 from the end opening of the clamping cavity 101 under the drive of a driving member such as a hydraulic cylinder or a push rod, and the jaws 100 are forced to open outward to accommodate the workpiece and provide the clamping force required for positioning the workpiece. At this time, the workpiece is processed by cutting the part of the workpiece located outside the clamping cavity 101 by a tool or the like, and waste chips are generated in the process. By setting the gap 102 between adjacent jaws 100 as a corrugated gap, the chuck can effectively prevent the waste chips generated during the cutting process of the workpiece from entering between adjacent jaws 100, compared with the straight gap in the prior art, thereby preventing the workpiece from being pinched or scratched by the waste chips when the jaws 100 clamp the workpiece again, thereby improving the processing quality of the workpiece and increasing the yield rate.

[0031] In addition, the clamping cavity 101 may also be polygonal in shape, and may be flexibly configured according to the workpiece to be clamped.

[0032] In an optional adaptation mode for two adjacent corrugated surfaces, the number of crests of the corrugated surface is set to at least two, and the number of troughs is also set to at least two. This embodiment of the present application enables the slit 102 to form at least two barrier layers along the first direction (each barrier layer includes adjacent crests and troughs in the slit 102), effectively improving the waste debris barrier effect.

[0033] In an optional configuration of the corrugated surface, the circumferential distance L between adjacent wave crests and troughs along the outer surface of the clamping end 10 is 0.4 cm ≤ L ≤ 2 cm. L can be 0.4 cm, 0.6 cm, 1 cm, 1.5 cm, etc. Within this range, the concentrated stress on the clamping jaws 100 is maintained within the allowable range for clamping the workpiece. The greater the distance between wave crests and troughs along the circumferential direction of the clamping end 10, the better the effect of preventing waste chips from entering the gap 102 between adjacent clamping jaws 100.

[0034] In an optional embodiment of the slit 102 , the slit 102 is arranged to have a constant width along the extension direction, so that the clamping jaw 100 can be subjected to a balanced force at the slit 102 along the first direction.

[0035] In an optional embodiment in which the slit 102 is provided on the clamping end 10, the angle between the tangent direction of the slit 102 opening on the end surface of the clamping end 10 and the end surface of the clamping end 10 is an acute angle. Figure 1As shown, the opening direction of the slit 102 at the end surface of the clamping end 10 is inclined relative to the end surface of the clamping end 10. Compared with the prior art in which the opening of the slit 102 at the end surface of the clamping end 10 is perpendicular to the end surface of the clamping end 10, this embodiment can effectively prevent waste chips from entering the slit 102. Furthermore, during actual machining, the rotation direction of the workpiece during machining is controlled to be opposite to the tangent direction of the slit 102 at the end surface of the clamping end 10, which can further prevent waste chips from entering the slit 102.

[0036] In an optional setting mode of the clamping end 10, the clamping end 10 includes an end portion 103 and a limiting portion 104 connected to each other, and the end portion 103 is located at the end of the clamping end 10. The outer diameter of the end portion 103 is smaller than the outer diameter of the limiting portion 104, and a first limiting end face 105 is defined at the connection point. A second limiting end face is provided inside the mounting portion 11, and the first limiting end face 105 is parallel to the second limiting end face. The second limiting end face can be defined by an opening in the mounting portion 11. Specifically, a limiting hole can be opened in the mounting portion 11 along the first direction, and the second limiting end face is defined by the bottom wall of the limiting hole. When positioning the jacket, a part of the external device abuts against the first limiting end face 105, and the other part abuts against the second limiting end face to limit the jacket along the first direction, thereby increasing the stability of the jacket and thereby improving the smoothness of the workpiece operation.

[0037] In the optional setting mode of the gap 102 width, after the clamping cavity 101 clamps the workpiece, the width of the gap 102 along the outer side of the clamping end 10 is less than or equal to 0.5 mm. By narrowing the width of the gap 102, it is more difficult for waste chips to enter the gap 102.

[0038] In an optional structure of the main body 1, at least three connection holes 12 are provided on the main body 1 between the clamping end 10 and the mounting portion 11 along the first direction, and at least three of the slits 102 are connected to the at least three connection holes 12 in a one-to-one correspondence. Figure 1 The connecting hole 12 can provide space margin for the clamping jaw 100 to expand outward when the clamping end 10 clamps the workpiece. Among them, the connecting hole 12 can be a waist hole extending along the first direction to further increase the space margin.

[0039] In the specific structure of the clamping jaws 100, there are four clamping jaws 100, and the four clamping jaws 100 are arranged along the circumference of the main body 1. Figure 1 As shown, four clamping jaws 100 are arranged along the circumferential direction to clamp the workpiece, and a corrugated gap extending along a corrugated line is provided between any two adjacent clamping jaws 100 .

[0040] In the optional installation method of the jacket, a cone sleeve 2 is further included, wherein a mounting cavity 20 is provided in the cone sleeve 2, wherein the main body is at least partially provided in the mounting cavity 20; wherein the limiting portion 104 includes a limiting side surface 1040, wherein the limiting side surface 1040 is an inclined surface, wherein an adjustment inclined surface 200 is provided in the mounting cavity 20, wherein the limiting side surface 1040 and the adjustment inclined surface 200 are in contact with each other and are adjustable and slidable relative to each other. The structure of the cone sleeve 2 is as follows: Figure 2 As shown, during operation, the adjustment bevel 200 is abutted against the limiting side surface 1040, and the tapered sleeve 2 is fixedly arranged. The external device abutting the first limiting end surface 105 and the second limiting end surface drives the main body 1 to move in the first direction, thereby achieving relative sliding between the limiting side surface 1040 and the adjustment bevel 200, and realizing the loosening or locking between the tapered sleeve 2 and the clamping end 10, so that the clamping jaws 100 on the clamping end 10 open to clamp the workpiece or retract 100 to stably clamp the workpiece. Alternatively, the two ends of the main body 1 can be abutted and fixed, and the tapered sleeve 2 can be driven by other external devices (hydraulic cylinders or pneumatic cylinders) to move in the first direction to achieve relative sliding between the limiting side surface 1040 and the adjustment bevel 200.

[0041] like Figure 3 As shown, in an alternative embodiment for controlling the movement of the taper sleeve 2, the taper sleeve 2 is mounted within an axial hole 300 defined by a shaft head 30. One axial end of the shaft head 30 is mounted on the spindle 3, and a shaft cap 31 is mounted on the other axial end. The collet body 1 is mounted between the taper sleeve 2 and the shaft cap 31. The first stopper end surface 105 of the body 1 abuts the end surface of the shaft cap 31. The mounting portion 11 is abutted and retained by a shaft-like structure, and the outer periphery of the end portion 103 is positioned within the inner bore 311. Under the thrust of a hydraulic or pneumatic cylinder, the taper sleeve 2 moves forward, compressing the conical surface of the stopper 104, causing the clamping cavity 101 to shrink and clamp the workpiece. When the hydraulic or pneumatic cylinder retracts, it drives the taper sleeve 2 backward, causing the collet body 1 to rebound, expanding the clamping cavity 101 and releasing the workpiece. The spindle head 30 is mounted to the spindle 3 via a first screw 32, and the shaft cap 31 is mounted to the outer periphery of the spindle head 30 via a second screw 33.

[0042] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0043] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the scope of protection of the present invention.

Claims

1. A jacket, characterized in that: include: A main body, the main body comprising a clamping end and a mounting portion arranged along a first direction, the mounting portion being used to position the main body; The clamping end is provided with at least three clamping jaws arranged in sequence along the circumferential direction, and the inner wall surfaces of at least three clamping jaws define a clamping cavity, and the clamping cavity is used to clamp the workpiece. The side surface of the clamping jaw is a corrugated surface. In two adjacent clamping jaws, the two corrugated surfaces arranged opposite to each other are arranged in an undulating and staggered manner with a spacing left therebetween, defining a gap extending along the first direction with a corrugated line.

2. The jacket according to claim 1, characterized in that In any of the corrugated surfaces, the number of wave crests and wave troughs is at least two.

3. The jacket according to claim 1, characterized in that The circumferential distance between adjacent wave crests and wave troughs in the corrugated surface along the outer side surface of the clamping end is L, and 0.4 cm≤L≤2 cm.

4. The jacket according to claim 1, characterized in that An angle between a tangent direction of the slit opening on the end surface of the clamping end and the end surface of the clamping end is an acute angle.

5. The jacket according to any one of claims 1 to 4, characterized in that: The clamping end includes an end portion and a limiting portion connected to each other, and the end portion is located at the end of the clamping end; The outer diameter of the end portion is smaller than the outer diameter of the limiting portion to define a first limiting end surface at the connection. A second limiting end surface is provided inside the mounting portion, and the first limiting end surface is parallel to the second limiting end surface.

6. The jacket according to claim 1, characterized in that The slits are arranged with equal width along the extension direction.

7. The jacket according to claim 1, characterized in that After the clamping cavity clamps the workpiece, the width of the clamping gap along the outer side surface of the clamping end is less than or equal to 0.5 mm.

8. The jacket according to claim 1, wherein: At least three connection holes are provided on the main body at a portion between the clamping end and the mounting portion along the first direction, and the at least three clamping slits are connected to the at least three connection holes in a one-to-one correspondence.

9. The jacket according to claim 1, characterized in that The number of the clamping jaws is four, and the four clamping jaws are arranged along the circumference of the main body.

10. The jacket according to claim 5, characterized in that It also includes a cone sleeve, wherein a mounting cavity is provided in the cone sleeve, and the main body is at least partially disposed in the mounting cavity; The limiting portion includes a limiting side surface, which is an inclined surface. An adjusting inclined surface is provided in the installation cavity. The limiting side surface is in contact with the adjusting inclined surface and is adjustable and slidably arranged relative to it.

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