Thin-wall part end face pressing tool

Abstract

The utility model discloses a thin-wall part end face pressing tool, and relates to the technical field of thin-wall part clamping. The clamping assembly can be used for clamping the to-be-machined thin-wall part on the positioning disc; the clamping assembly comprises a push-pull piece and a linkage rod, the front end of the linkage rod is movably connected with an extrusion head, and the extrusion head can rotate in the front-back moving process of the floating supporting disc. According to the thin-wall part end face pressing tool, due to the fact that the rotatable extrusion head is adopted as a clamping jaw for clamping a thin-wall part, the extrusion head rotates outwards while extending, and therefore the positioning disc in the center is exposed, the problem that when an existing thin-wall part end face pressing tool is used, the clamping jaw cannot be used for clamping the thin-wall part is effectively solved. The technical problem that the to-be-machined part is complex to install is solved, the purpose of rapidly installing the to-be-machined part is achieved, the to-be-machined part does not make contact with the clamp during installation, and the possibility of collision or abrasion does not occur.

Description

Technical Field

[0001] The utility model relates to the technical field of thin-walled component clamping, in particular to a thin-walled component end surface pressing tool. Background Art

[0002] With the continuous development of the machinery industry, the lightweight improvement of products is becoming more and more popular. As an important measure for lightweighting, aluminum alloy, as a lightweight and high-strength material, is increasingly widely used. The wall thickness of aluminum alloy die-casting blanks is getting thinner and thinner, the shape is getting more and more complex, and the processing requirements of finished parts are getting higher and higher. When processing on turning and milling composite processing equipment or machining centers, parts need to be accurately fixed.

[0003] At present, a Chinese patent with the existing patent application number "CN202310487261.X" discloses a thin-walled part fixture with centripetal angular positioning. The present invention includes a clamping body; a chuck, which is connected to the clamping body, the chuck includes a chuck body and a plurality of jaws distributed circumferentially along the upper end of the chuck body; a jaw driving mechanism provided on the clamping body, the jaw driving mechanism is used to drive the plurality of jaws to contract or open to clamp or loosen the workpiece, the workpiece includes a cylindrical surface and at least one angular feature and a plurality of positioning bosses provided on the cylindrical surface; an angular positioning mechanism, the angular positioning mechanism includes an angular positioning seat connected to the clamping body and located beside the chuck, an angular positioning cylinder connected to the angular positioning seat, and an angular positioning plate connected to the telescopic end of the angular positioning cylinder. Although the precise positioning of the parts is achieved to a certain extent, the installation of the thin-walled parts to be processed requires a lot of time and effort due to the extension of the jaws on the chuck toward the center.

[0004] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0005] The installation of the parts to be processed is cumbersome: most of the existing clamping tools use a three-jaw chuck style clamp (such as the above-mentioned comparative document). In order to stably clamp the parts to be processed, the clamp needs to be designed into an "L" shape, and the head of the clamp extends toward the center of the clamp. This results in the clamp blocking the space at the front end of the positioning plate when the parts to be processed are installed. Therefore, when installing the parts to be processed, the user needs to manually place the parts to be processed from the gap between two adjacent jaws onto the positioning plate. However, since the gap between two adjacent jaws is small and the adjustment and installation of the parts to be processed cannot be completed with one hand, the installation of the thin-walled parts to be processed requires a lot of time and effort. At the same time, it is easy for the thin-walled parts to be processed to collide with the clamp (or the clamp and the user's hand) during installation, resulting in damage to the parts or personnel. For this reason, we propose a thin-walled part end face clamping tool. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a thin-walled part end face pressing tooling, which adopts a rotatable extrusion head as a clamping claw for clamping the thin-walled part, and makes the protrusion on the outside of the extrusion head cooperate with the guide groove on the inner wall of the clamping chuck. When the extrusion head is extended, it drives the extrusion head to rotate away from the center, thereby exposing the positioning disk at the center, thereby achieving the purpose of rapid installation of the parts to be processed. Secondly, during the installation, neither the parts to be processed nor the hands of the staff will come into contact with the clamp, and there will be no possibility of collision or wear, thereby solving the technical problem of cumbersome installation of the parts to be processed when the existing thin-walled part end face pressing tooling is used.

[0008] (II) Technical solution

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A thin-walled workpiece end face pressing tool, the pressing tool comprises a disc-shaped clamping chuck and a clamping assembly installed inside the clamping chuck, the clamping assembly can move back and forth in the clamping chuck, and the thin-walled workpiece to be processed placed on the clamping chuck is clamped by the forward and backward movement, so the installation function of the clamping assembly is mainly divided into two parts, namely, a clamping member capable of clamping the thin-walled workpiece to be processed and a driving structure capable of driving the clamping member to move;

[0011] Among them, the clamping assembly includes a floating support plate that can slide back and forth, and a plurality of connecting rods are connected to the edge of the floating support plate. The front end of the connecting rod is movably connected to an extrusion head, and the extrusion head can rotate during the forward and backward movement of the floating support plate.

[0012] Preferably, a movable rod is connected to the side of the extrusion head facing the connecting rod, and the extrusion head and the connecting rod are connected through the movable rod, so that the extrusion head and the connecting rod can rotate relative to each other;

[0013] Secondly, the connecting rod and the movable rod are both located in the through hole opened at the front end of the clamping chuck, and can move along the extending direction of the through hole.

[0014] Preferably, the guide groove is divided into a telescopic section and a rotating section, and the connection between the telescopic section and the rotating section has a smooth transition, and the protrusion can slide in the telescopic section and the rotating section;

[0015] Wherein, the extension direction of the telescopic section is consistent with the length direction of the through hole;

[0016] The rotating section is arc-shaped, and when the protrusion moves along the rotating section, the extrusion head can be driven to rotate.

[0017] Preferably, an inserting groove is formed on the outer wall of the connecting rod, and the opening of the inserting groove faces the floating support plate, so that the connecting rod can be connected to the edge of the floating support plate, and the connecting rod can be driven to move synchronously when the floating support plate moves.

[0018] Preferably, the two ends of the push-pull member respectively penetrate the front and rear end surfaces of the clamping chuck and extend outward, wherein the front end of the push-pull member extends to the center of the positioning disk, so that the parts located on the positioning disk can be pushed down from the positioning disk during the forward and backward movement of the push-pull member;

[0019] The other end extends to the rear of the clamping chuck and is connected to the machine tool.

[0020] Preferably, the telescopic pin is arranged near the bottom of the positioning plate, one end of the telescopic pin is inserted into the clamping chuck, and the other end is connected to the clamping chuck through a spring. In order to ensure the stability of the telescopic pin, the spring between the two needs to be always in a compressed state, so that a certain degree of thrust can be provided to the telescopic pin.

[0021] The other end extends to the outside of the clamping chuck and faces the positioning disk. This end is hemispherical to reduce the friction between it and the positioning disk.

[0022] When the telescopic pin is extended under the action of the spring force, the positioning plate tilts upward.

[0023] Preferably, the hinge is located in the notch at the rear end of the positioning disk, and when the front end surface of the positioning disk is perpendicular to the horizontal plane, the rear end surface of the positioning disk is kept in full contact with the clamping chuck.

[0024] Preferably, a sealing ring is connected to the front end of the clamping chuck, and the sealing ring surrounds the connection between the positioning plate and the clamping chuck.

[0025] (III) Beneficial effects

[0026] 1. Since a rotatable extrusion head is used as a clamping claw for thin-walled parts, and the protrusions on the outside of the extrusion head cooperate with the guide grooves on the inner wall of the clamping chuck, the extrusion head is driven to rotate away from the center while extending, thereby exposing the positioning disk at the center. Therefore, the technical problem of cumbersome installation of the parts to be processed during the use of the existing thin-walled part end face clamping tooling is effectively solved, thereby achieving the purpose of rapid installation of the parts to be processed. Secondly, during the installation, neither the parts to be processed nor the hands of the staff will contact the fixture, and there will be no possibility of collision or wear.

[0027] 2. Since the positioning plate and the clamping chuck are connected together by a hinge, and the bottom of the positioning plate is pushed outward by the telescopic pin, the clamping chuck is tilted upward. Therefore, after the parts to be processed are placed, the parts to be processed are not easy to fall off the positioning plate, thereby further reducing the difficulty of part installation. Secondly, when the positioning plate is squeezed, the telescopic pin retracts, and the rear end of the positioning plate fits with the front end of the clamping chuck, thereby ensuring the stability of part clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0029] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0031] Figure 3 This is a structural diagram of the back of the positioning plate in the embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the rotation of the positioning plate in the embodiment of the utility model;

[0033] Figure 5 This is a structural diagram of the clamping assembly in the embodiment of the utility model;

[0034] Figure 6 This is a schematic diagram of the exploded structure of the clamping assembly in the embodiment of the utility model;

[0035] Figure 7 A partial cross-sectional view of a clamping chuck in an embodiment of the utility model;

[0036] Figure 8 This is a structural diagram of a pressing member in an embodiment of the utility model;

[0037] Fig. 9 It is a schematic diagram of the installation process of the thin-walled parts in the embodiment of the utility model.

[0038] Legend:

[0039] 1. Clamp the chuck;

[0040] 2. Connecting plate;

[0041] 3. Clamping assembly; 31. Floating support plate; 32. Push-pull member; 321. Connecting shaft; 322. Retaining ring; 323. Gasket; 324. Limiting ring; 325. Long bolt; 33. Pressing member; 331. Linking rod; 332. Movable rod; 333. Protrusion; 334. Extrusion head; 335. Guide groove; 336. Plug groove;

[0042] 4. Positioning plate;

[0043] 51. Hinge; 52. Telescopic pin;

[0044] 6. Sealing ring. DETAILED DESCRIPTION

[0045] The embodiment of the present application provides a thin-walled component end face pressing tool, which effectively solves the technical problem of cumbersome installation of the parts to be processed when the existing thin-walled component end face pressing tool is used. When the existing thin-walled component end face pressing tool is used, a rotatable extrusion head is used as a clamping claw for clamping the thin-walled component, and the protrusion on the outside of the extrusion head cooperates with the guide groove on the inner wall of the clamping chuck. When the extrusion head is extended, the extrusion head is driven to rotate in a direction away from the center, thereby exposing the positioning disk at the center, thereby achieving the purpose of rapid installation of the parts to be processed. Secondly, during installation, At the same time, neither the parts to be processed nor the hands of the workers will come into contact with the clamp, and there will be no possibility of collision or wear; since the positioning plate and the clamping chuck are connected together by a hinge, and the bottom of the positioning plate is pushed outward by the telescopic pin, so that the clamping chuck is tilted upward, after the parts to be processed are placed, the parts to be processed are not easy to fall off the positioning plate, thereby further reducing the difficulty of parts installation; secondly, when the positioning plate is squeezed, the telescopic pin retracts, and the rear end of the positioning plate fits with the front end of the clamping chuck, thereby ensuring the stability of part clamping.

[0046] Example 1

[0047] The technical solution in the embodiment of the present application effectively solves the technical problem of cumbersome installation of the parts to be processed when the existing thin-walled part end face pressing tool is used. The overall idea is as follows:

[0048] In view of the problems existing in the prior art, the utility model provides a thin-walled workpiece end face clamping tool, which includes a disc-shaped clamping chuck 1 and a clamping assembly 3 installed inside the clamping chuck 1. The clamping assembly 3 can move forward and backward in the clamping chuck 1. By moving forward and backward, the thin-walled workpiece to be processed placed on the clamping chuck 1 is clamped. Therefore, the installation function of the clamping assembly 3 is mainly divided into two parts, namely, a clamping member 33 that can clamp the thin-walled workpiece to be processed and a driving structure that can drive the clamping member 33 to move, which are as follows:

[0049] like Figure 5 and Figure 6 As shown, the driving structure includes a triangular floating support plate 31 and a push-pull member 32 connected to the center of the floating support plate 31, the push-pull member 32 is connected to an external machine tool (an existing conventional machine tool can be used, and no further details are given in this application because this part has not been improved), and a connecting shaft 321 (a part of the push-pull member 32) passes through the floating support plate 31. In order to ensure the tightness of the connection between the two, an outwardly protruding retaining ring 322 is provided on the outside of the connecting shaft 321. The retaining ring 322 can be embedded in the groove at the front end of the floating support plate 31. After the retaining ring 322 is inserted into the groove, an annular limiting ring 324 is installed on the outside of the retaining ring 322 by bolts, so that the retaining ring 322 can be restricted between the floating support plate 31 and the limiting ring 324. Figure 5 As shown, at this time, as long as the push-pull member 32 moves, the floating support plate 31 will be driven to move, thereby completing the driving of the floating support plate 31.

[0050] A long bolt 325 is connected to the center of the connecting shaft 321 , and an anti-skid pad 323 is disposed between the nut of the long bolt 325 and the connecting shaft 321 .

[0051] In addition, the two ends of the push-pull member 32 respectively penetrate the front and rear end surfaces of the clamping chuck 1 and extend outward, wherein the front end of the push-pull member 32 extends to the center of the positioning disk 4, so that the parts located on the positioning disk 4 can be pushed off the positioning disk 4 during the forward and backward movement of the push-pull member 32; the other end passes through the connecting disk 2 behind the clamping chuck 1 and extends to the outside of the clamping chuck 1, and is finally connected to the machine tool.

[0052] In order to transmit the power generated by the push-pull member 32 to the pressing member 33, a plug-in slot 336 is provided on the outer wall of the linkage rod 331, and the opening of the plug-in slot 336 also needs to face the floating support plate 31. Figure 6 As shown, the linkage rod 331 can be connected to the edge of the floating support plate 31 in this way, and the linkage rod 331 can be driven to move synchronously when the floating support plate 31 moves.

[0053] The other part is the pressing member 33, which includes a pressing member 33 with a plug-in slot 336 and a rotatable extrusion head 334, and the extrusion head 334 is connected to a cylindrical movable rod 332 on the side facing the linkage rod 331, and the extrusion head 334 and the linkage rod 331 are connected through the movable rod 332, so that the extrusion head 334 and the linkage rod 331 can rotate relative to each other, such as Figure 8As shown, secondly, the linkage rod 331 and the movable rod 332 are both located in the through holes opened at the front end of the clamping chuck 1 (the number of through holes corresponds to the number of linkage rods 331 one by one), and can move along the extension direction of the through holes.

[0054] In order to avoid the influence of the extrusion head 334 on the installation of parts, the improvements of the present application are as follows:

[0055] like Figure 7 and Figure 8 As shown, two mutually symmetrical protrusions 333 are provided on the outer wall of the movable rod 332, and the protrusions 333 are located in the guide grooves 335 on the inner wall of the through hole, as shown in FIG. Figure 7 It can be seen that the guide groove 335 is divided into two sections, a telescopic section consistent with the extension direction of the through hole and an arc-shaped rotating section, and the connection between the telescopic section and the rotating section has a smooth transition, which facilitates the protrusion 333 to move between the telescopic section and the rotating section. Figure 7 As can be seen from the image shown by the arrow on the left, if the linkage rod 331 wants to extend outward, the protrusion 333 on the movable rod 332 needs to move forward and backward along the telescopic section first (that is, control the movable rod 332 and the extrusion head 334 thereon to move forward and backward, but cannot rotate), and then enter the rotating section from the telescopic section. The rotating section is spiral, so when the protrusion 333 moves along the rotating section, it can drive the extrusion head 334 at the end of the movable rod 332 to rotate outward. At this time, the positioning plate 4 located at the front end of the clamping chuck 1 is exposed, as shown in FIG. Fig. 9 shown.

[0056] In the specific implementation process, when the thin-walled workpiece to be processed needs to be installed on the positioning plate 4, the user directly places the thin-walled workpiece to be processed on the positioning plate 4 from the front thereof, such as Fig. 9 As shown in (a), after the installation is completed, the push-pull member 32 is controlled to pull the movable rod 332 backward. Since the protrusion 333 on the outer wall of the movable rod 332 is located in the guide groove 335, and the front end of the guide groove 335 is an arc-shaped rotating section, when it is pulled backward, the movable rod 332 drives the extrusion head 334 thereon to rotate inward, as shown in FIG. Fig. 9 As shown in (b), when the protrusion 333 moves to the telescopic section, the extrusion head 334 can be kept from rotating and can move backwards, thereby completing the clamping of the thin-walled workpiece to be processed.

[0057] Example 2

[0058] Based on Example 1, the embodiment of the present application is to solve the technical problem that parts are prone to falling off when the existing parts to be processed are installed. The overall idea is as follows:

[0059] In order to prevent the parts from falling off before clamping, a hinge 51 and a telescopic pin 52 are arranged at the front end of the clamping chuck 1, and the hinge 51 and the telescopic pin 52 correspond to each other up and down. The clamping chuck 1 is connected to the positioning disk 4 through the hinge 51, so that the positioning disk 4 can rotate to a certain extent, that is, rotate around the hinge 51 as the axis.

[0060] The telescopic pin 52 is arranged at a position close to the bottom of the positioning disk 4, and one end of the telescopic pin 52 is inserted into the clamping chuck 1, and the other end is connected to the clamping chuck 1 through a spring. In order to ensure the stability of the telescopic pin 52 in the telescopic movement, it is necessary to ensure that the spring between the two is always in a compressed state, so that a certain degree of thrust can be provided to the telescopic pin 52; the other end extends to the outside of the clamping chuck 1 and faces the positioning disk 4. This end is hemispherical to reduce the friction between it and the positioning disk 4.

[0061] In this way, when the telescopic pin 52 is acted upon by the spring force, the bottom of the positioning plate 4 can be pushed forward, causing the positioning plate 4 to tilt upward. As the positioning plate 4 tilts upward, the parts mounted thereon also tilt upward, causing the positioning plate 4 to hook the frame of the parts to prevent the parts from falling off the positioning plate 4 due to accidental contact.

[0062] In order to prevent the hinge 51 from affecting the fit between the positioning disk 4 and the clamping chuck 1, a notch is opened at the rear end of the positioning disk 4 and the hinge 51 is set in this notch, so that when the front end face of the positioning disk 4 is perpendicular to the horizontal plane, the rear end face of the positioning disk 4 can be kept in complete fit with the clamping chuck 1.

[0063] Due to the separation of the positioning disk 4 and the clamping chuck 1, a gap appears between the two. In order to prevent dust and other debris from entering, a sealing ring 6 is connected to the front end of the clamping chuck 1. The sealing ring 6 is sleeved on the outside of the positioning disk 4 to cover the connection between the positioning disk 4 and the clamping chuck 1.

[0064] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A thin-walled component end surface pressing tool, characterized in that: The clamping tool includes: A clamping chuck (1), wherein the clamping chuck (1) fixes the thin-walled workpiece to be processed via a positioning plate (4) at its front end; A clamping assembly (3) is installed inside the clamping chuck (1) and can clamp the thin-walled workpiece to be processed on the positioning plate (4); The clamping assembly (3) comprises a floating support plate (31) which can slide forward and backward, and a plurality of linkage rods (331) are connected to the edge of the floating support plate (31), and the front end of the linkage rod (331) is movably connected to an extrusion head (334), and the extrusion head (334) can rotate when the floating support plate (31) moves forward and backward.

2. A thin-walled component end surface pressing tool as claimed in claim 1, characterized in that: A movable rod (332) is connected to one side of the extrusion head (334) facing the linkage rod (331), and the extrusion head (334) is connected to the end of the linkage rod (331) via the movable rod (332); The linkage rod (331) and the movable rod (332) are both located in a through hole formed at the front end of the clamping chuck (1) and can move along the extension direction of the through hole. The outer wall of the movable rod (332) is symmetrically provided with protrusions (333), and the protrusions (333) are located in the guide grooves (335) on the inner wall of the through hole.

3. A thin-walled component end surface pressing tool as claimed in claim 2, characterized in that: The guide groove (335) is divided into a telescopic section and a rotating section, and the connection between the telescopic section and the rotating section has a smooth transition, and the protrusion (333) can slide in the telescopic section and the rotating section; Wherein, the extension direction of the telescopic section is consistent with the length direction of the through hole; The rotating section is arc-shaped, and when the protrusion (333) moves along the rotating section, it can drive the extrusion head (334) to rotate.

4. A thin-walled component end surface pressing tool as claimed in claim 1, characterized in that: The outer wall of the connecting rod (331) is provided with an inserting groove (336), and the inserting groove (336) outside the connecting rod (331) faces the floating support plate (31) and is inserted into the edge of the floating support plate (31), so that the connecting rod (331) can be driven to move synchronously when the floating support plate (31) moves.

5. A thin-walled component end surface pressing tool as claimed in claim 1, characterized in that: A push-pull member (32) is inserted at the center of the floating support plate (31), and both ends of the push-pull member (32) penetrate the clamping chuck (1) and extend to the outside of the clamping chuck (1); The push-pull member (32) can drive the floating support plate (31) to move forward and backward synchronously.

6. A thin-walled component end surface pressing tool as claimed in any one of claims 1 to 5, characterized in that: The front end of the clamping chuck (1) is connected to a hinge (51) and a telescopic pin (52), and the hinge (51) and the telescopic pin (52) correspond to each other up and down, and the clamping chuck (1) is connected to the positioning plate (4) through the hinge (51); The retractable pin (52) is inserted into the front end of the clamping chuck (1), and the end of the retractable pin (52) inserted into the inside of the clamping chuck (1) is connected to the clamping chuck (1) via a spring, and the spring is always in a compressed state; When the telescopic pin (52) is extended under the action of the spring force, the positioning plate (4) tilts upward.

7. A thin-walled component end surface pressing tool as claimed in claim 6, characterized in that: The hinge (51) is located in the notch at the rear end of the positioning disk (4), and when the front end surface of the positioning disk (4) is perpendicular to the horizontal plane, the rear end surface of the positioning disk (4) fits with the clamping chuck (1).

8. A thin-walled component end surface pressing tool as claimed in claim 7, characterized in that: A sealing ring (6) is connected to the front end of the clamping chuck (1), and the sealing ring (6) surrounds the connection between the positioning plate (4) and the clamping chuck (1).

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