CN109352369B - Arc-shaped part machining clamp - Google Patents

Abstract

The invention discloses an arc-shaped piece processing fixture, which belongs to the field of mechanical processing. When processing a plurality of arc-shaped parts, the plurality of arc-shaped parts are installed on a plurality of clamping assemblies in a one-to-one correspondence. When installing each arc-shaped piece, make one side of the arc-shaped piece abut against the positioning block, and the end of the arc-shaped piece close to the base is supported by a support screw, adjust the telescopic unit, and control the pressing block to slide on the support block. The one end of the pressing block close to the positioning block is abutted against the other side of the arc-shaped piece, and the supporting screw, the pressing block and the positioning block clamp the arc-shaped piece, so that the position of the arc-shaped piece relative to the base is fixed. The positions of the parts are fixed, and the end of the arc part away from the base can be processed at the same time. This processing method can improve the processing efficiency of the arc part and ensure that the matching accuracy of multiple arc parts and other workpieces is consistent when in use.

Description

An arc part processing fixture

technical field

The invention relates to the field of mechanical processing, in particular to a processing fixture for arc-shaped parts.

Background technique

There are many parts such as gas turbine casings, and one of the annular parts includes a plurality of identical arc parts. When the annular part is used, a plurality of arc-shaped parts cooperate with each other to form an annular structure, and the distances between the arc-shaped parts are equal.

Such ring-shaped parts need to be processed separately for each arc-shaped part, and the processing efficiency is low, and it is difficult to ensure the matching accuracy requirements between the plurality of arc-shaped parts and other workpieces.

SUMMARY OF THE INVENTION

The embodiment of the present invention provides an arc-shaped part processing fixture, which solves the problems of low processing efficiency and unsatisfactory matching accuracy of a ring-shaped part composed of a plurality of arc-shaped parts. The technical solution is as follows:

An embodiment of the present invention provides an arc-shaped piece processing fixture, the arc-shaped piece processing fixture includes a base and a plurality of clamping assemblies, and the plurality of clamping assemblies are arranged on the base at equal intervals along the circumference of the circumference ,

Each of the clamping assemblies includes a positioning block, a support screw and a pressing structure, and the positioning block and the support screw are arranged on the base at intervals,

The compression structure includes a support block, a compression block and a telescopic unit, the support block and the support screw are arranged on the base at intervals, and the compression block is slidably connected to the support block, so The telescopic unit is used to control the movement of the pressing block in the radial direction of the circumference.

Optionally, the telescopic unit includes a connecting plate and a telescopic screw, the connecting plate is fixed on the support block, the connecting plate is provided with a threaded hole, and the telescopic screw is inserted in the threaded hole, One end of the telescopic screw is abutted against the pressing block, and the axis of the telescopic screw coincides with a diameter of the circumference.

Optionally, one end of the pressing block close to the telescopic screw is provided with a guide groove, and one end of the telescopic screw is inserted into the guide groove.

Optionally, a limit slot is provided on the support block, the limit slot extends along one end of the support block to the other end of the support block, and the length direction of the limit slot is parallel to the length of the telescopic screw. axis.

Optionally, the pressing block includes a pressing end and a connecting end, the pressing end and the connecting end are detachably connected, and the connecting end is connected with the support block.

Optionally, the clamping assembly further includes a limit cover plate, the limit cover plate is fixed on the support block, and the connection end is located between the limit groove and the cover plate.

Optionally, the support block is disposed on a side of the positioning block close to the center of the circumference.

Optionally, the clamping assembly further includes a positioning pin, the positioning pin is arranged on the base at an interval from the positioning block, and the positioning pin is used to further limit the position of the arc-shaped member.

Optionally, the positioning block is a symmetrical structure, and the symmetry axis of the positioning block coincides with a diameter of the circumference.

Optionally, two pins are used for positioning between the positioning block and the base, and the two pins are symmetrically arranged on both sides of an axis of symmetry of the positioning block.

The beneficial effect brought by the technical solutions provided by the embodiments of the present invention is that when processing a plurality of arc-shaped members, the plurality of arc-shaped members are installed on a plurality of clamping assemblies in a one-to-one correspondence. When installing each arc-shaped piece, make one side of the arc-shaped piece abut against the positioning block, and the end of the arc-shaped piece close to the base is supported by a support screw, adjust the telescopic unit, and control the pressing block to slide on the support block. The one end of the pressing block close to the positioning block is abutted against the other side of the arc-shaped piece, and the supporting screw, the pressing block and the positioning block clamp the arc-shaped piece, so that the position of the arc-shaped piece relative to the base is fixed. The positions of the parts are fixed, and the end of the arc part away from the base can be processed at the same time. This processing method can improve the processing efficiency of the arc part and ensure that the matching accuracy of multiple arc parts and other workpieces is consistent when in use.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments.

1 is a side view of an arc-shaped member provided by an embodiment of the present invention;

2 is a top view of an arc-shaped member provided by an embodiment of the present invention;

3 is a schematic diagram of the use state of an arc-shaped workpiece processing fixture provided by an embodiment of the present invention;

4 is a schematic structural diagram of a clamping assembly provided by an embodiment of the present invention;

5 is a top view of a clamping assembly provided by an embodiment of the present invention;

6 is a schematic structural diagram of a pressing end provided by an embodiment of the present invention;

7 is a schematic structural diagram of a connection end provided by an embodiment of the present invention;

8 is a schematic structural diagram of a support block provided by an embodiment of the present invention;

9 is a top view of a support block provided by an embodiment of the present invention;

10 is a schematic structural diagram of a connection board provided by an embodiment of the present invention;

11 is a schematic structural diagram of a positioning block provided by an embodiment of the present invention;

12 is a side view of a positioning block provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a support screw provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

In order to facilitate the understanding of the present invention, the specific structure of the arc-shaped member provided by the embodiment of the present invention is explained here. FIG. 1 is a side view of the arc-shaped member provided by the embodiment of the present invention, and FIG. 2 is provided by the embodiment of the present invention. The top view of the arc-shaped member, combined with FIG. 1 and FIG. 2, the outer side of the arc-shaped member 10 is provided with an arc-shaped member groove 101, the inner wall is an arc-shaped surface, the arc-shaped member 10 is a symmetrical structure, and the arc-shaped member 10 has a symmetrical surface 10a.

FIG. 3 is a schematic diagram of the use state of an arc-shaped part processing fixture provided by an embodiment of the present invention. As shown in FIG. 3 , the arc-shaped part processing fixture includes a base 1 and a plurality of clamping components 2 , and a plurality of clamping components 2 They are arranged on the base 1 at equal intervals along the circumferential direction of the circumference 1a.

4 is a schematic structural diagram of a clamping assembly provided by an embodiment of the present invention. With reference to FIGS. 3 and 4 , each clamping assembly 2 includes a positioning block 21 , a support screw 22 and a pressing structure 23 , and the positioning block 21 and the support screw. 22 are arranged on the base 1 at intervals.

The pressing structure 23 includes a supporting block 231, a pressing block 232 and a telescopic unit 233. The supporting block 231 and the supporting screw 22 are arranged on the base 1 at intervals, and the pressing block 232 is slidably connected to the supporting block 231. The telescopic unit 233 is used for It is used to control the movement of the pressing block 232 in the radial direction of the circumference 1a.

When the plurality of arc-shaped parts 10 are processed, the plurality of arc-shaped parts 10 are installed on the plurality of clamping assemblies 2 in one-to-one correspondence. When installing each arc-shaped member 10, one side of the arc-shaped member 10 can be in contact with the positioning block 21, and the end of the arc-shaped member 10 close to the base 1 is supported by the support screw 22, and the telescopic unit 233 can be adjusted to control the compression The block 232 slides on the support block 231, so that one end of the pressing block 232 close to the positioning block 21 abuts the other side of the arc-shaped member 10, and the support screw 22, the positioning block 21 and the pressing block 232 clamp the arc-shaped member 10 , so that the position of the arc-shaped member 10 relative to the base 1 is fixed, and the positions of the plurality of arc-shaped members 10 are fixed, and the end of the arc-shaped member 10 away from the base 1 can be processed at the same time. The processing efficiency is improved, and the matching accuracy of the plurality of arc parts 10 and other workpieces is guaranteed to be consistent when in use.

It should be noted that the size of the circumference 1a on the base 1 can be determined according to the diameter of the circle corresponding to the outer wall and the inner wall of the arc-shaped member 10, and the arc-shaped member 10 can be better fixed on the base 1. It is beneficial to ensure the stable processing of the arc-shaped part 10 .

As shown in FIG. 3 , the support block 231 may be disposed on the side of the positioning block 21 close to the center of the circumference 1a. This arrangement can reduce the space required to be occupied by the clamping assembly 2 as a whole.

As shown in FIG. 3 , the number of the clamping assemblies 2 can be 6, at this time, the arc-shaped parts 10 with better quality can be processed, but in other embodiments of the present invention, the number of the clamping assemblies 2 can also be 4 or 8 or 5, which is not limited in the present invention.

Optionally, the base 1 can be cylindrical, which is convenient to manufacture and to realize the processing of the arc-shaped member 10 .

As shown in FIG. 4 , the telescopic unit 233 may include a connecting plate 233a and a telescopic screw 233b, the connecting plate 233a is fixed on the support block 231, the connecting plate 233a is provided with a threaded hole, the telescopic screw 233b is inserted in the threaded hole, and the telescopic screw One end of the 233b is in contact with the pressing block 232, and the axis of the telescopic screw 233b coincides with a diameter of the circumference 1a. In actual use, by controlling the rotation of the telescopic screw 233b relative to the connecting plate 233a, the telescopic screw 233b can be displaced in the radial direction of the circumference 1a, and the telescopic screw 233b pushes the pressing block 232 to produce displacement in the radial direction of the circumference 1a, that is, The arc member 10 can be pressed against the positioning block 21 by the pressing block 232 . This structure can achieve the function of pressing the arc-shaped member 10 on the positioning block 21 with a relatively simple structure.

As shown in FIG. 4 , a locking nut 233c can be arranged between the connecting plate 233a and the other end of the telescopic screw 233b to ensure the stability of the telescopic screw 233b in use.

In an implementation provided by the embodiment of the present invention, when the arc-shaped member 10 needs to be removed from the clamping assembly 2, the telescopic screw 233b can be rotated to separate it from the pressing block 232, so that the pressing block 232 faces The center of the circle 1a moves in the direction of the center of the circle, and the arc-shaped member 10 is taken out from the clamping assembly 2 .

5 is a top view of the clamping assembly provided by the embodiment of the present invention. With reference to FIGS. 4 and 5 , one end of the pressing block 232 close to the telescopic screw 233b may be provided with a guide groove 232a, and one end of the telescopic screw 233b is inserted into the guide groove 232a Inside. In order to facilitate the installation of the telescopic screw 233b and the pressing block 232, the displacement of the telescopic screw 233b in the direction perpendicular to its axis can also be reduced.

As shown in FIG. 5 , a limiting hole 232b can also be provided on the pressing block 232. The limiting hole 232b extends from the side of the pressing block 232 close to the base 1 to the other side of the pressing block 232 away from the base 1, and the guide groove 232a is formed by One end of the pressing block 232 extends to the limiting hole 232b, the projection of the limiting hole 232b on the base 1 is a waist shape, and the length direction of the limiting hole 232b is perpendicular to the axis direction of the telescopic screw 233b, and the telescopic screw 233b is close to the pressing block One end of the 232 can be provided with an external thread 233d, the external thread 233d is located in the limiting hole 232b, the diameter of the external thread 233d is smaller than the distance between the two farthest points on the inner wall of the limiting hole 232b, and the diameter of the external thread 233d larger than the width of the guide groove 232a. This arrangement can facilitate the installation and disassembly of the arc-shaped member 10 on the clamping assembly 2. When the arc-shaped member 10 needs to be disassembled, the telescopic screw 233b can be directly rotated, and the external thread 233d on the telescopic screw 233b will be together with the telescopic screw 233b. When moving, the external thread 233d stuck in the limiting hole 232b will directly drive the pressing block 232 to move. As shown in FIG. 5 , the clamping assembly 2 may further include a positioning pin 24 , and the positioning pin 24 is provided on the base 1 at a distance from the positioning block 21 . In actual use, the positioning pin 24 is located on one side of the symmetrical plane 10 a of the arc-shaped member 10 , which can further limit the position of the arc-shaped member 10 to ensure the machining accuracy of the arc-shaped member 10 .

As shown in FIG. 4 , the pressing block 232 may include a pressing end 2321 and a connecting end 2322 , the pressing end 2321 and the connecting end 2322 are detachably connected, and the connecting end 2322 is connected with the supporting block 231 . This structure is more convenient for the disassembly and installation of the clamping assembly 2 .

FIG. 6 is a schematic structural diagram of a pressing end provided by an embodiment of the present invention, and FIG. 7 is a structural schematic diagram of a connecting end provided by an embodiment of the present invention. With reference to FIGS. 4 , 6 and 7 , the lengthwise direction of the pressing end 2321 is perpendicular to the telescopic screw 233b The connecting end 2322 is provided with a mounting groove 2322a matched with the pressing end 2321, and the pressing end 2321 and the connecting end 2322 can be connected by pins. This structure is easy to disassemble and compress the arc-shaped member 10 The effect is better and easier to make.

FIG. 8 is a schematic structural diagram of a support block provided by an embodiment of the present invention, and FIG. 9 is a top view of the support block provided by an embodiment of the present invention. Referring to FIG. 8 and FIG. Extending from one end of the support block 231 to the other end of the support block 231, the length direction of the limiting groove 231a is parallel to the axis of the telescopic screw 233b. The setting of the limiting groove 231a can prevent the connecting end 2322 of the pressing block 232 from being displaced on the axis of the vertical telescopic screw 233b, and ensure that the pressing block 232 can effectively press the arc-shaped member 10.

The support block 231 and the base 1 can be connected by screws, and the screws are countersunk screws. This structure takes up less space.

4 and 9, the clamping assembly 2 may further include a limit cover plate 234, the limit cover plate 234 is fixed on the support block 231, and the connecting end 2322 is located between the limit groove 231a and the cover plate. The limit cover plate 234 can limit the connection end 2322 of the pressing block 232 to avoid vibration and displacement of the pressing block 232 in the direction perpendicular to the surface of the base 1 and ensure the machining accuracy of the arc part 10 .

FIG. 10 is a schematic structural diagram of a connecting plate provided by an embodiment of the present invention. With reference to FIGS. 4 and 10 , a groove A is provided on the surface of the connecting plate 233 a close to the pressing block 232 , and the setting of the groove A can facilitate the pressing block. 232 and the telescopic screw 233b are installed, and a certain retraction space is provided for the pressing block 232.

FIG. 11 is a schematic structural diagram of a positioning block provided by an embodiment of the present invention, and FIG. 12 is a side view of the positioning block provided by an embodiment of the present invention. As shown in FIG. 11 , the positioning block 21 is a symmetrical structure, and the symmetry axis 21a of the positioning block 21 is Coincides with a diameter of the circumference 1a. The positioning block 21 is arranged in a symmetrical structure, which can facilitate the positioning block 21 to position and clamp the arc-shaped member 10 of the symmetrical structure, thereby improving the machining accuracy of the arc-shaped member 10 .

4 and 12 , the positioning block 21 includes a positioning block main body 211 and a protrusion 212 , the protrusion 212 is provided on the positioning block main body 211 , and the protrusion 212 can be matched with the arc-shaped member groove 101 on the arc-shaped member 10 . , when the arc-shaped member 10 is installed on the positioning block 21 , the protrusion 212 is inserted into the arc-shaped member groove 101 to facilitate the positioning and clamping of the arc-shaped member 10 .

5 and 11 , two pins 26 are used for positioning between the positioning block 21 and the base 1 , and the two pins 26 are symmetrically arranged on both sides of the axis of symmetry 21 a of the positioning block 21 . The two pins 26 arranged symmetrically can improve the installation accuracy of the positioning block 21 and ensure the machining accuracy of the arc-shaped member 10 .

FIG. 13 is a schematic structural diagram of a support screw provided by an embodiment of the present invention. As shown in FIG. 12 , the support screw 22 may be provided with a through hole 221 perpendicular to its axis. When the position of the support screw 22 needs to be adjusted, the tool can be extended. The rotation of the support screw 22 is controlled by entering the through hole 221 , so as to improve the installation and clamping efficiency of the arc-shaped member 10 .

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (8)

1. The arc-shaped piece machining clamp is characterized by comprising a base (1) and a plurality of clamping components (2), wherein the plurality of clamping components (2) are arranged on the base (1) at equal intervals along the circumferential direction of a circumference (1 a),

each clamping component (2) comprises a positioning block (21), a supporting screw (22) and a pressing structure (23), the positioning block (21) and the supporting screw (22) are arranged on the base (1) at intervals,

the pressing structure (23) comprises a supporting block (231), a pressing block (232) and a telescopic unit (233), the supporting block (231) and the supporting screw (22) are arranged on the base (1) at intervals, the pressing block (232) is connected to the supporting block (231) in a sliding manner, the telescopic unit (233) is used for controlling the pressing block (232) to move in the radial direction of the circumference (1 a),

the telescopic unit (233) comprises a connecting plate (233 a) and a telescopic screw (233 b), the connecting plate (233 a) is fixed on the supporting block (231), a threaded hole is formed in the connecting plate (233 a), the telescopic screw (233 b) is inserted into the threaded hole, one end of the telescopic screw (233 b) abuts against the pressing block (232), the axis of the telescopic screw (233 b) is overlapped with one diameter of the circumference (1 a), a groove (A) is formed in the surface of the connecting plate (233 a) close to the pressing block (232), and a locknut (c) is arranged between the connecting plate (233 a) and the other end of the telescopic screw (233 b),

one end, close to the telescopic screw (233 b), of the compression block (232) is provided with a guide groove (232 a) and a limiting hole (232 b), one end of the telescopic screw (233 b) is inserted into the guide groove (232 a), one surface, close to the base (1), of the compression block (232) extends to the other surface, far away from the base (1), of the compression block (232) in the limiting hole (232 b), the projection of the limiting hole (232 b) on the base (1) is waist-shaped, the length direction of the limiting hole (232 b) is perpendicular to the axial direction of the telescopic screw (233 b), one end, close to the compression block (232), of the telescopic screw (233 b) is provided with an external thread (233 d), and the external thread (233 d) is located in the limiting hole (232 b), the diameter of the external thread (233 d) is smaller than the distance between two points on the inner wall of the limiting hole (232 b) which are farthest away, and the diameter of the external thread (233 d) is larger than the width of the guide groove (232 a).

2. The arc-shaped piece machining clamp according to claim 1, wherein a limiting groove (231 a) is formed in the supporting block (231), the limiting groove (231 a) extends to the other end of the supporting block (231) along one end of the supporting block (231), and the length direction of the limiting groove (231 a) is parallel to the axis of the telescopic screw (233 b).

3. The arc piece processing clamp according to claim 2, wherein the pressing block (232) comprises a pressing end (2321) and a connecting end (2322), the pressing end (2321) is detachably connected with the connecting end (2322), and the connecting end (2322) is connected with the supporting block (231).

4. The arc piece processing clamp according to claim 3, wherein the clamping assembly (2) further comprises a limiting cover plate (234), the limiting cover plate (234) is fixed on the supporting block (231), and the connecting end (2322) is located between the limiting groove (231 a) and the limiting cover plate.

5. The arc member machining jig according to claim 1, wherein the support block (231) is provided on a side of the positioning block (21) near a center of the circle (1 a).

6. The arc-shaped piece machining clamp according to claim 1, wherein the clamping assembly (2) further comprises a positioning pin (24), the positioning pin (24) and the positioning block (21) are arranged on the base (1) at intervals, and the positioning pin (24) is used for further limiting the arc-shaped piece.

7. The arc machining fixture according to claim 1, characterized in that the positioning block (21) is of a symmetrical structure, and a symmetry axis (21 a) of the positioning block (21) coincides with a diameter of the circumference (1 a).

8. The arc-shaped piece machining clamp according to claim 7, characterized in that the positioning block (21) and the base (1) are positioned by two pins (26), and the two pins (26) are symmetrically arranged on two sides of a symmetry axis (21 a) of the positioning block (21).

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