A positioning tool for shell press sawing

Abstract

The application relates to the technical field of shell pressing, in particular to a positioning tool for shell pressing sawing, which comprises a base mounted on a sawing machine, a moving base and an adjusting assembly for driving the moving base are arranged on the base, a plurality of fixing bases are connected to the moving base, mounting bases for stabilizing shells and locking assemblies for locking the mounting bases are arranged on the fixing bases, and a limiting assembly for stabilizing the shells is arranged on the moving base. The positioning tool has the effect of improving the applicability of the positioning tool.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of shell pressing, in particular to a positioning tool for shell pressing sawing. BACKGROUND

[0002] The shell is a common workpiece in industrial production, which is formed by proportioning, smelting, refining and deslagging alloy raw materials, and pouring the molten metal raw materials into a mold for forming, and then performing trimming, heat treatment, mechanical property and metallographic inspection on the formed workpiece.

[0003] When the shell 01 is poured and formed, it often has excess material 011, referring to Figure 1 The excess material 011 is integrally formed on one side of the shell 01. The excess material 011 of the shell 01 is usually cut off by a sawing machine 1, and the shell 01 has a special shape. In order to ensure the stability and processing efficiency of the shell 01 during processing, a positioning tool needs to be provided on the sawing machine 1.

[0004] Due to the special shape of the shell, a seat matching the shape of the shell needs to be provided on the tool to limit the freedom of the shell. In the prior art, the seat is fixedly connected to the tool to pursue the stability of the overall tool. Such a setting results in that the tool of the prior art is only suitable for processing a shell of one size, thereby reducing the applicability of the positioning tool.

[0005] CONTENT

[0006] In order to improve the applicability of the positioning tool, the application provides a positioning tool for shell pressing sawing.

[0007] The positioning tool for shell pressing sawing provided by the application adopts the following technical solution:

[0008] A positioning tool for shell pressing sawing, comprising a base mounted on a sawing machine, wherein the base is provided with a moving seat and an adjusting assembly for driving the moving seat, the moving seat is connected with a plurality of fixed seats, the fixed seat is provided with a mounting seat for stabilizing the shell and a locking assembly for locking the mounting seat, and the moving seat is provided with a limiting assembly for stabilizing the shell.

[0009] By adopting the above technical solution, when clamping the shell, the shell is embedded on the mounting seat, the mounting seat is slidingly fitted on the fixed seat, the locking assembly is used to lock the mounting seat, the limiting assembly is used to limit the shell, and finally the position of the moving seat is adjusted by the adjusting assembly, so that the sawing belt of the sawing machine is aligned with the sawing part of the shell, and the shell is installed. By slidingly fitting the mounting seat on the fixed seat, when replacing shells of different sizes, only the mounting seat needs to be replaced, and finally the locking assembly is used to limit the mounting seat, so that the positioning tool is suitable for installing shells of multiple sizes, thereby improving the applicability of the positioning tool.

[0010] Optionally, the mobile base is connected with a stopper, the top end of the fixed base is obliquely arranged, the reference direction is from one side of the fixed base to the stopper, the thickness of the fixed base gradually decreases, the top end of the fixed base is connected with a sliding bar, the sliding bar is a T-shaped bar, the mounting base is slidingly fitted on the sliding bar and abuts against the stopper.

[0011] By adopting the above technical scheme, the top end of the fixed base is obliquely arranged, and the stopper is matched, so that the position of the mounting base is limited, and compared with the horizontal arrangement of the top end of the fixed base, the locking stability of the mounting base is further improved.

[0012] Optionally, the locking assembly comprises a connecting column, a pressing arc rod, a rotating block, a locking screw and a stabilizing block, one end of the connecting column is connected to the mounting base, the connecting column passes through the stopper, one end of the pressing arc rod is rotatably connected to the stopper, the pressing arc rod abuts against the surface of the connecting column, the rotating block is rotatably connected to the other end of the pressing arc rod, the rotating block is connected with a connecting plate, the locking screw is rotatably connected to the rotating block, the locking screw is threadedly connected with an abutting block, the abutting block abuts against the connecting plate, a abutting inclined surface is arranged on the side wall of the abutting block away from the locking screw, and the stabilizing block is connected to the stopper and abuts against the abutting inclined surface.

[0013] By adopting the above technical scheme, when the mounting base is locked, the mounting base abuts against the stopper, one end of the connecting column passes through the stopper, the pressing arc rod is turned over to make the pressing arc rod abut against the surface of the connecting column, the rotating block is turned over, the locking screw is turned to make the abutting block move, and the abutting inclined surface abuts against the stabilizing block, so as to limit the degrees of freedom of the pressing arc rod and the connecting column, and the locking effect of the mounting base is achieved.

[0014] Optionally, the adjusting assembly comprises an adjusting screw, a connecting block and a limiting rail, a plurality of limiting rails are connected to the base, the limiting rail is a T-shaped rail, the connecting block is connected to the mobile base, the adjusting screw is rotatably connected to the base and is parallel to the limiting rail, the adjusting screw passes through the connecting block and is threadedly connected with the connecting block.

[0015] By adopting the above technical scheme, when the position of the pressing shell is adjusted, the adjusting screw is turned, the connecting block is moved under the limitation of the limiting rail, the mobile base is moved, and the position of the pressing shell is adjusted until the sawing part of the pressing shell is aligned with the sawing belt of the sawing machine.

[0016] Optionally, two clamping bases are arranged on the sawing machine, the base is detachably connected to the sawing machine and located between the two clamping bases, side positioning blocks are connected to the two sides of the base, the side positioning blocks abut against the surfaces of the clamping bases, and the clamping bases are provided with pressing members for pressing the side positioning blocks against the surfaces of the clamping bases.

[0017] By adopting the technical scheme, the side positioning block is attached to the clamping seat to limit the installation angle of the base, thereby improving the sawing precision of the shell.

[0018] Optionally, the pressing member is a pressing frame, the pressing member is detachably connected to the clamping seat, a pressing bolt is threadedly connected to the pressing member, a pressing plate is connected to the pressing bolt, and the pressing plate abuts against the side positioning block.

[0019] By adopting the technical scheme, when the base is installed, the pressing plate is moved by rotating the pressing bolt, the side positioning block is pushed to move, and the side positioning block is attached to the side wall of the clamping seat to limit the position of the base in the width direction. At this time, the clamping seat is started to drive the base to move on the sawing bed to adjust the position of the base in the length direction, thereby achieving the effect of positioning the base.

[0020] Optionally, the limiting assembly comprises a rotary downward pressing cylinder and a side pressing cylinder, two fixing seats are arranged, the rotary downward pressing cylinder is connected to the moving seat and located between the two fixing seats, a pressing plate is connected to the rotary end of the rotary downward pressing cylinder, two side pressing cylinders are connected to the moving seat, the two fixing seats are located between the two side pressing cylinders, a rotating seat is connected to the side pressing cylinder, a side pressing block is rotatably connected to the rotating seat, a driving column is connected to the output shaft of the side pressing cylinder, and the driving column is slidingly connected to one end of the side pressing block.

[0021] By adopting the technical scheme, when the shell is limited, the rotary downward pressing cylinder is started to rotate and descend the pressing plate until the pressing plate presses the top end of the shell, and then the side pressing cylinder is started to rotate the side pressing block to press the side wall of the shell, thereby limiting the degree of freedom of the shell and achieving the effect of limiting the shell.

[0022] Optionally, the limiting assembly comprises a pressing frame, a fixing column, a connecting cylinder, a limiting block and an ejection spring, two fixing seats are arranged, the fixing column is connected to the moving seat and located between the two fixing seats, the connecting cylinder is sleeved on the top end of the fixing column, the pressing frame is rotatably connected to the connecting cylinder, both ends of the pressing frame are provided with pressing inclined surfaces, the top end of the fixing column is provided with a receiving hole, the ejection spring is connected in the receiving hole, a pressing column is connected in the connecting cylinder, a pressing block is connected to the pressing column, the pressing block presses the ejection spring, the limiting block is connected to the inner wall of the connecting cylinder, the surface of the fixing column is provided with a moving groove and a limiting ring groove, the moving groove is in communication with the limiting ring groove and perpendicular to the limiting ring groove, when the shell is limited, the pressing inclined surfaces press the shell, the limiting block is located in the limiting ring groove, and the ejection spring is in a compressed state.

[0023] By adopting the technical scheme, when the shell is limited, the connecting cylinder is sleeved on the fixed column, the limiting block enters the moving groove, the pressing block enters the containing hole, the pressing frame is located above the two shells, the pressing is continuously applied and the connecting cylinder is rotated, the limiting block enters the limiting ring groove, at this time the pressing inclined surface presses the shell, the ejector spring is compressed, and thus the freedom of the shell is limited, and the installation of the shell is realized.

[0024] To sum up, the present application has at least one of the following beneficial technical effects:

[0025] 1. When the shell is clamped, the shell is embedded on the mounting seat, the mounting seat is slidingly fitted on the fixed seat, the mounting seat is locked by the locking assembly, the shell is limited by the limiting assembly, and finally the position of the moving seat is adjusted by the adjusting assembly, so that the sawing area of the sawing machine is aligned with the sawing area of the shell, and the installation of the shell is realized. By slidingly fitting the mounting seat on the fixed seat, when different models and sizes of shells are replaced, only the mounting seat needs to be replaced, and finally the mounting seat is limited by the locking assembly, so that the positioning tool is suitable for the installation of shells of multiple models and sizes, and the applicability of the positioning tool is improved.

[0026] 2. When the mounting seat is locked, the mounting seat is attached to the stop block, one end of the connecting column passes through the stop block, the pressing arc lever is turned over and attached to the surface of the connecting column, the rotating block is turned over, the locking screw is rotated, the abutting block is moved, and the abutting inclined surface is attached to the stable block, so that the freedom of the pressing arc lever is limited, the freedom of the connecting column is also limited, and the locking effect of the mounting seat is realized.

[0027] 3. When the shell is limited, the connecting cylinder is sleeved on the fixed column, the limiting block enters the moving groove, the pressing block enters the containing hole, the pressing frame is located above the two shells, the pressing is continuously applied and the connecting cylinder is rotated, the limiting block enters the limiting ring groove, at this time the pressing inclined surface presses the shell, the ejector spring is compressed, and thus the freedom of the shell is limited, and the installation of the shell is realized. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the shell in the prior art.

[0029] Figure 2 is a structural schematic view of the sawing machine and the positioning tool in Embodiment 1 of the present application.

[0030] Figure 3 is a structural schematic view of the positioning tool and the clamping seat in Embodiment 1 of the present application.

[0031] Figure 4 is a structural schematic view of the pressing member in Embodiment 1 of the present application.

[0032] Figure 5 is a structural schematic view of the adjusting assembly and the limiting assembly in Embodiment 1 of the present application.

[0033] Figure 6 is a structural schematic diagram of the locking assembly in Embodiment 1 of the present application.

[0034] Figure 7 is Figure 6 is an enlarged view at A in

[0035] Figure 8 is a structural schematic diagram of the limiting assembly in Embodiment 2 of the present application.

[0036] Figure 9 is an exploded view for embodying the structure of the limiting assembly in Embodiment 2 of the present application.

[0037] Figure 10 is a sectional view for embodying the structure of the limiting assembly in Embodiment 2 of the present application.

[0038] BRIEF DESCRIPTION OF DRAWINGS 01, press shell; 011, excess material; 1, sawing machine; 11, clamping seat; 2, base; 21, side positioning block; 22, moving seat; 221, fixed seat; 222, stop block; 223, sliding bar; 224, mounting seat; 3, pressing member; 31, pressing bolt; 4, adjusting assembly; 41, adjusting screw; 42, connecting block; 43, limiting rail; 5, locking assembly; 51, connecting column; 52, pressing arc rod; 53, rotating block; 531, connecting plate; 54, locking bolt; 541, abutting block; 55, stabilizing block; 6, limiting assembly; 61, rotating downward pressing cylinder; 611, pressing plate; 62, side pressing cylinder; 621, side pressing block; 63, pressing frame; 64, fixed column; 641, accommodating hole; 642, moving groove; 643, limiting ring groove; 65, connecting cylinder; 651, pressing block; 66, limiting block; 67, ejection spring. DETAILED DESCRIPTION

[0039] The following will be described in detail with reference to the accompanying drawings. Figures 2-10 The present application will be further described in detail.

[0040] Embodiment 1 of the present application discloses a positioning tool for press shell sawing. Referring to Figure 2 , Figure 3 and Figure 4 , the positioning tool for press shell sawing comprises a base 2 placed on a sawing machine 1, the base 2 is bolted on the sawing machine 1, and both sides of the base 2 in the length direction are fixedly connected with side positioning blocks 21. The sawing machine 1 is provided with two clamping seats 11, the side positioning blocks 21 are attached to the clamping seats 11, and the side positioning blocks 21 are used to limit the position of the base 2 in the width direction. The clamping seats 11 are provided with pressing members 3, the pressing members 3 are pressing frames and are arranged in a Z shape, and the pressing members 3 are bolted on the clamping seats 11. The pressing members 3 are threadedly connected with pressing bolts 31, the pressing bolts 31 are fixedly connected with abutting plates, and the abutting plates press the side positioning blocks 21.

[0041] Referring toFigure 5 The base 2 is provided with a moving seat 22 and an adjusting assembly 4. The adjusting assembly 4 comprises an adjusting screw 41, a connecting block 42 and a limiting rail 43. The limiting rail 43 is fixedly connected to the base 2. In the embodiment, two limiting rails 43 are provided. The limiting rail 43 is a T-shaped rail. The moving seat 22 is slidingly fitted on the limiting rail 43. The connecting block 42 is fixedly connected to the moving seat 22. The adjusting screw 41 is rotatably connected to the base 2 and is parallel to the limiting rail 43. The adjusting screw 41 penetrates through the connecting block 42 and is threadedly connected to the connecting block 42.

[0042] When the position of the moving seat 22 is adjusted, the adjusting screw 41 is rotated. The connecting block 42 is moved and the moving seat 22 is moved to a designated position by the limiting of the limiting rail 43, so that the position of the moving seat 22 is adjusted.

[0043] With reference to Figure 5 and Figure 6 , the moving seat 22 is fixedly connected with a plurality of fixed seats 221. In the embodiment, two fixed seats 221 are provided. The moving seat 22 is fixedly connected with a stop block 222. The stop block 222 is attached to the other side of the fixed seat 221. The top end of the fixed seat 221 is inclined. From the side of the fixed seat 221 to the stop block 222 is a reference direction. The height of the fixed seat 221 gradually decreases. The top end of the fixed seat 221 is fixedly connected with a plurality of sliding bars 223. The sliding bar 223 is a T-shaped bar. The sliding bar 223 is slidingly fitted with a mounting seat 224. The mounting seat 224 is attached to the side of the stop block 222.

[0044] With reference to Figure 6 and Figure 7 , the stop block 222 is provided with a locking assembly 5. The locking assembly 5 comprises a connecting column 51, a pressing arc lever 52, a rotating block 53, a locking bolt 54 and a stabilizing block 55. One end of the connecting column 51 is fixedly connected to the side of the mounting seat 224. The stop block 222 is provided with a U-shaped groove corresponding to the position of the connecting column 51. The connecting column 51 penetrates through the U-shaped groove. One end of the pressing arc lever 52 is hingedly connected to the stop block 222. The pressing arc lever 52 is attached to the surface of the connecting column 51. The rotating block 53 is hingedly connected to the other end of the pressing arc lever 52. The rotating block 53 is fixedly connected with a connecting plate 531. The locking bolt 54 is rotatably connected to the rotating block 53. The locking bolt 54 is threadedly connected with a pressing block 541. The pressing block 541 is attached to the connecting plate 531. The stabilizing block 55 is fixedly connected to the stop block 222. The side wall of the pressing block 541 close to the stabilizing block 55 is provided with a pressing inclined surface. From the connecting plate 531 to the pressing arc lever 52 is a reference direction. The thickness of the pressing block 541 gradually decreases. The stabilizing block 55 is attached to the pressing inclined surface.

[0045] When the mounting base 224 is locked, the mounting base 224 is in contact with the stop block 222, the pressing arc rod 52 is flipped and pressed to make the pressing arc rod 52 fit against the connecting column 51, the rotating block 53 is flipped and the locking bolt 54 is rotated to move the abutment block 541 until it abuts against the inclined surface and the stabilizing block 55. This restricts the degree of freedom of the pressing arc rod 52 and also restricts the degree of freedom of the connecting column 51, thus achieving the effect of locking the mounting base 224.

[0046] Reference Figure 5 A limiting component 6 is provided on the movable base 22, which includes a rotary pressing cylinder 61 and a side pressing cylinder 62. The rotary pressing cylinder 61 is mounted on the movable base 22 and located between two fixed bases 221. The rotary pressing cylinder 61 is vertically arranged, and its moving end is bolted to a pressure plate 611. Two side pressing cylinders 62 are mounted on the movable base 22, and both fixed bases 221 are located between the two side pressing cylinders 62. A rotating base is fixedly connected to the side pressing cylinder 62, and a side pressing block 621 is hinged to the rotating base. A drive column is fixedly connected to the output shaft of the side pressing cylinder 62, and one end of the side pressing block 621 has a waist-shaped groove, in which the drive column slides.

[0047] When restricting the pressure shell 01, the rotating pressing cylinder 61 is activated to lower and rotate the pressure plate 611 until the pressure plate 611 presses the two pressure shells 01. Then, the side pressing cylinder 62 is activated to rotate the side pressing block 621 until it presses one side of the pressure shell 01, thereby restricting the degree of freedom of the pressure shell 01 and realizing the installation of the pressure shell 01.

[0048] The implementation principle of a positioning fixture for sawing a pressure shell in Embodiment 1 of this application is as follows: During installation, the pressure shell 01 is placed on the mounting base 224, the mounting base 224 is slidably fitted onto the fixed base 221 and abuts against the stop block 222, the pressing arc rod 52 is flipped and abuts against the connecting column 51, the rotating block 53 is flipped and the locking bolt 54 is rotated to move the abutting block 541 until it abuts against the inclined surface and the stabilizing block 55 to lock the mounting base 224. Then, the rotating pressing cylinder 61 is activated to make the pressure plate 611 rotate and descend until the pressure plate 611 presses against the top of the pressure shell 01. The side pressing cylinder 62 is activated, the side pressing block 621 rotates and presses against the side wall of the pressure shell 01 to restrict the pressure shell 01. Finally, the adjusting screw 41 is rotated to move the connecting block 42, which drives the moving base 22 to move until the saw blade of the saw machine 1 is aligned with the sawing part of the pressure shell 01, thus realizing the installation of the pressure shell 01.

[0049] The mounting base 224 slides on the fixed base 221. When changing the pressure shell 01 of different models and sizes, only the mounting base 224 needs to be replaced. Finally, the mounting base 224 is locked by the locking component 5, so that the positioning fixture can be used for the installation of pressure shell 01 of multiple models and sizes, thus improving the applicability of the positioning fixture.

[0050] Example 2: The difference between this example and Example 1 is that the structure of the limiting component 6 is different.

[0051] Reference Figure 8 , Figure 9 and Figure 10 The limiting component 6 includes a pressure frame 63, a fixed post 64, a connecting cylinder 65, a limiting block 66, and an ejection spring 67. The fixed post 64 is fixedly connected to the movable seat 22 and is located between two fixed seats 221. The top end of the fixed post 64 has a receiving hole 641, and the ejection spring 67 is installed in the receiving hole 641. The surface of the fixed post 64 has several moving grooves 642. In this embodiment, two moving grooves are used as an example. The moving grooves 642 are parallel to the axial direction of the fixed post 64. One end of the moving groove 642 is connected to a limiting ring groove 643, and the limiting ring groove 643 is perpendicular to the moving groove 642.

[0052] Reference Figure 9 and Figure 10 A connecting cylinder 65 is sleeved on the top of a fixed column 64. A pressure column is fixedly connected to the inner top wall of the connecting cylinder 65, and a pressure block 651 is fixedly connected to the bottom end of the pressure column. The pressure block 651 is located inside the receiving hole 641 and compresses the ejector spring 67. A pressure frame 63 is rotatably connected to the surface of the connecting cylinder 65, and both ends of the pressure frame 63 are provided with pressure inclined surfaces. A limiting block 66 is fixedly connected to the inner wall of the connecting cylinder 65 at the position corresponding to the moving groove 642. Both the moving groove 642 and the limiting ring groove 643 are matched with the shape of the limiting block 66.

[0053] When the pressure shell 01 is restricted, the connecting cylinder 65 is sleeved on the top of the fixed column 64, the pressure block 651 abuts against the ejector spring 67, the pressure frame 63 is located above the two pressure shells 01, the restriction block 66 enters the moving groove 642, the pressure is continued and the connecting cylinder 65 is rotated, the restriction block 66 enters the restriction ring groove 643, the pressure block 651 presses the ejector spring 67, and the pressure frame 63 presses the top of the pressure shell 01, thereby restricting the degree of freedom of the pressure shell 01 and realizing the installation of the pressure shell 01.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning fixture for shell-pressing sawing, characterized in that: Includes a base (2) mounted on a saw (1), the base (2) having a movable seat (22) and an adjusting assembly (4) for driving the movable seat (22), the movable seat (22) being connected to several fixed seats (221), the fixed seats (221) having a mounting seat (224) for stabilizing the pressure shell (01) and a locking assembly (5) for locking the mounting seat (224), the movable seat (22) having a limiting assembly (6) for stabilizing the pressure shell (01); the movable seat ( 22) A stop (222) is connected to the fixed seat (221). The top end of the fixed seat (221) is inclined. The thickness of the fixed seat (221) gradually decreases from one side of the fixed seat (221) to the stop (222). A sliding strip (223) is connected to the top end of the fixed seat (221). The sliding strip (223) is a T-shaped strip. The mounting seat (224) slides on the sliding strip (223) and fits against the stop (222). The locking assembly (5) includes The system comprises a connecting post (51), a clamping arc rod (52), a rotating block (53), a locking bolt (54), and a stabilizing block (55). One end of the connecting post (51) is connected to the mounting base (224), and the connecting post (51) passes through the stop block (222). One end of the clamping arc rod (52) is rotatably connected to the stop block (222), and the clamping arc rod (52) fits against the surface of the connecting post (51). The rotating block (53) is rotatably connected to the other end of the clamping arc rod (52). A connecting plate (531) is connected to the rotating block (53). The locking bolt (54) is rotatably connected to the rotating block (53). A pressing block (541) is threaded onto the locking bolt (54). The pressing block (541) fits against the connecting plate (531). A pressing inclined surface is provided on the side wall of the pressing block (541) away from the locking bolt (54). The stabilizing block (55) is connected to the stop block (222). The stabilizing block (55) fits against the pressing inclined surface.

2. The positioning fixture for shell pressing sawing according to claim 1, characterized in that: The adjustment assembly (4) includes an adjustment screw (41), a connecting block (42), and a limiting rail (43). Several limiting rails (43) are connected on the base (2). The limiting rails (43) are T-shaped rails. The connecting block (42) is connected to the movable seat (22). The adjustment screw (41) is rotatably connected to the base (2) and parallel to the limiting rail (43). The adjustment screw (41) passes through the connecting block (42) and is threadedly engaged with the connecting block (42).

3. The positioning fixture for shell-pressing sawing according to claim 1, characterized in that: The saw (1) is provided with two clamps (11). The base (2) is detachably connected to the saw (1) and located between the two clamps (11). Side positioning blocks (21) are connected to both sides of the base (2). The side positioning blocks (21) fit against the surface of the clamps (11). The clamps (11) are provided with clamping members (3) that press the side positioning blocks (21) against the surface of the clamps (11).

4. The positioning fixture for shell pressing sawing according to claim 3, characterized in that: The clamping component (3) is a clamping frame. The clamping component (3) is detachably connected to the clamping seat (11). The clamping component (3) is threaded with a clamping bolt (31). The clamping bolt (31) is connected with a pressing plate. The pressing plate presses against the side positioning block (21).

5. The positioning fixture for shell pressing sawing according to claim 1, characterized in that: The limiting component (6) includes a rotary pressing cylinder (61) and a side pressing cylinder (62). Two fixed seats (221) are provided. The rotary pressing cylinder (61) is connected to the movable seat (22) and located between the two fixed seats (221). The rotating end of the rotary pressing cylinder (61) is connected to a pressure plate (611). Two side pressing cylinders (62) are connected to the movable seat (22). Both fixed seats (221) are located between the two side pressing cylinders (62). A rotating seat is connected to the side pressing cylinder (62). A side pressing block (621) is rotatably connected to the rotating seat. A drive column is connected to the output shaft of the side pressing cylinder (62). The drive column is slidably engaged with one end of the side pressing block (621).

6. The positioning fixture for shell-pressing sawing according to claim 1, characterized in that: The limiting component (6) includes a pressure frame (63), a fixed column (64), a connecting cylinder (65), a limiting block (66), and an ejector spring (67). Two fixed seats (221) are provided. The fixed column (64) is connected to the movable seat (22) and located between the two fixed seats (221). The connecting cylinder (65) is sleeved on the top end of the fixed column (64). The pressure frame (63) is rotatably connected to the connecting cylinder (65). Both ends of the pressure frame (63) are provided with pressure-applying inclined surfaces. The top end of the fixed column (64) has a receiving hole (641), and the ejector spring (67) is connected in the receiving hole (641). A pressure column is connected inside the connecting cylinder (65), and a pressure block (651) is connected on the pressure column. The pressure block (651) applies pressure to the ejector spring (67). Several blocks of the limiting block (66) are connected to the inner wall of the connecting cylinder (65). The surface of the fixed column (64) has a moving groove (642) and a limiting ring groove (643). The moving groove (642) communicates with the limiting ring groove (643) and is perpendicular to the limiting ring groove (643). When the pressure shell (01) is restricted, the pressure inclined surface presses the pressure shell (01) tightly. The limiting block (66) is located in the limiting ring groove (643), and the ejector spring (67) is in a compressed state.

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