Axis self-fixing tool clamp for metal machining

Abstract

The utility model provides a metal processing frock clamp of self-fixed axle center, including the fixture seat and be provided on the fixture seat, the fixture assembly includes first fixture assembly and second fixture assembly, the first fixture assembly is provided on the bottom of fixture seat, the second fixture assembly is provided on the surface of fixture seat, and the fixture seat is provided with the first fixture assembly and the second fixture assembly. The first clamp assembly comprises a first clamping jaw, a second clamping jaw and a third clamping jaw which are arranged at the bottom of the clamp base in the circumferential direction, and the first clamping jaw, the second clamping jaw and the third clamping jaw are used for being connected with a lathe chuck in a matched mode so that the tool clamp can rotate along the lathe chuck in a self-fixed axis mode. The second clamp assembly comprises a boss, a plurality of pins and a plurality of positioning columns, the boss is arranged at the center position of the clamp base, and the pins and the positioning columns are alternately and circumferentially arranged at the edge position of the surface of the clamp base; the positioning and clamping device is simple in structure, can accurately position and clamp the workpiece, and can improve the machining precision of the workpiece.

Description

Technical Field

[0001] This utility model belongs to the technical field of tooling fixtures, and in particular relates to a self-axis tooling fixture for metal processing. Background Technology

[0002] In machining, some precision-cast semi-finished products do not require clamping during processing due to their own dimensional changes, and their positioning is inaccurate. However, the position of the precision-cast semi-finished product to be processed requires high precision. Therefore, a positioning fixture is needed to position and clamp the precision-cast semi-finished product to be processed.

[0003] Existing tooling fixtures are either complex in structure or difficult to unload, and in most cases cannot achieve self-centering, which fails to meet the processing requirements of precision-cast semi-finished products, resulting in poor processing accuracy of precision-cast semi-finished workpieces.

[0004] Therefore, it is necessary to propose a new type of self-axis tooling fixture for metal processing. Utility Model Content

[0005] The main purpose of this utility model is to provide a self-axis tooling fixture for metal processing, in order to address the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A self-aligning axis tooling fixture for metal processing includes a fixture base and a fixture assembly disposed on the fixture base. The fixture assembly includes a first fixture assembly and a second fixture assembly. The first fixture assembly is disposed at the bottom of the fixture base, and the second fixture assembly is disposed on the surface of the fixture base. The first fixture assembly includes a first jaw, a second jaw, and a third jaw circumferentially disposed at the bottom of the fixture base. The first jaw, the second jaw, and the third jaw are used to engage with a lathe chuck to enable the tooling fixture to rotate along the self-aligning axis of the lathe chuck. The second fixture assembly includes a boss, a plurality of pins, and a plurality of positioning pins. The boss is disposed at the center of the fixture base, and the pins and the positioning pins are alternately circumferentially disposed at the edges of the surface of the fixture base.

[0008] Preferably, the height of the pin relative to the surface of the clamp seat is the same as the height of the positioning post relative to the surface of the clamp seat.

[0009] Preferably, a plurality of limiting posts are fixedly installed on the surface of the clamp seat, and the limiting posts are circumferentially distributed around the periphery of the boss.

[0010] Preferably, the height of the limiting post relative to the surface of the clamp seat is less than the height of the boss.

[0011] Preferably, both the pin and the positioning post are welded to the surface of the clamp seat.

[0012] Preferably, the surface of the clamp seat is provided with a groove between adjacent pins and positioning posts, and a protective plate is inserted into each groove.

[0013] Preferably, the top of the guard plate is threadedly connected to a locking assembly, the top of the guard plate has a connecting hole with an internal thread, the locking assembly includes a connecting rod, the outer periphery of the connecting rod is provided with an external thread that mates with the internal thread, and the top of the connecting rod is fixedly connected to an L-shaped locking plate.

[0014] Compared with the prior art, the present invention will have at least the following beneficial effects:

[0015] This invention has a simple structure and can achieve precise positioning and clamping of workpieces, thereby improving the machining accuracy of workpieces.

[0016] The first, second, and third jaws, which are circumferentially positioned at the bottom of the fixture seat and connected to the lathe chuck, enable the tooling fixture to rotate along the self-fixed axis of the lathe chuck.

[0017] The boss, pin, positioning post, and limiting post of the second fixture assembly are respectively connected to the structure on the workpiece to be processed, so that the workpiece to be processed is fixed on the second fixture assembly.

[0018] The guard plate is inserted into the groove and fits against the workpiece body to be processed, thereby fixing and protecting the workpiece body; the L-shaped clamping plate in the locking assembly at the top of the guard plate can fix the edge of the top of the workpiece to be processed, thereby fixing and protecting the top of the workpiece. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of the self-axis-determining tooling fixture for metal processing according to this utility model.

[0021] Figure 2 This is an exploded view of the self-axis-determining tooling fixture for metal processing according to the present invention.

[0022] Figure 3 This is a front sectional view of the self-aligning axis tooling fixture for metal processing according to this utility model;

[0023] Figure 4 This is a top sectional view of the self-axis centering tooling fixture for metal processing according to this utility model.

[0024] The reference numerals in the figures include:

[0025] 1. Fixture base; 2. First jaw; 3. Second jaw; 4. Third jaw; 5. Boss; 6. Pin; 7. Positioning pin; 8. Limiting pin; 9. Groove; 10. Guard plate; 11. Connecting hole; 12. Connecting rod; 13. L-shaped clamping plate. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely exemplary embodiments of this utility model, and not the only embodiments.

[0027] like Figures 1 to 4 As shown, in metal processing, it is necessary to process workpieces similar to the housing of ROTECH limit switches. This type of workpiece is bowl-shaped, with a circular protrusion at the center of its bottom. Several slots are located around the outer periphery of the bottom center (circular protrusion), but these slots do not penetrate the bottom of the workpiece. Several circular holes are located circumferentially on the upper surface of this type of workpiece. In actual processing, a tooling fixture is required to fix the workpiece in position before processing can proceed. Specifically:

[0028] A self-aligning spindle fixture for metalworking includes a fixture base 1 and a fixture assembly disposed on the fixture base 1. The fixture assembly includes a first fixture assembly and a second fixture assembly. The first fixture assembly is disposed at the bottom of the fixture base 1, and the second fixture assembly is disposed on the surface of the fixture base 1. The first fixture assembly includes a first jaw 2, a second jaw 3, and a third jaw 4 circumferentially disposed at the bottom of the fixture base 1, wherein the first jaw 2, the second jaw 3, and the third jaw 4 are used to engage with a lathe chuck to achieve fixture clamping. The fixture rotates along its self-fixed axis along the lathe chuck. This means that the first jaw 2, the second jaw 3, and the third jaw 4 are integrally set with the fixture holder 1. In actual use, the fixture needs to be loaded onto the lathe chuck first. Specifically, the first jaw 2, the second jaw 3, and the third jaw 4 are simultaneously engaged with the lathe chuck, thereby enabling the fixture to rotate along its self-fixed axis. This allows the workpiece to be machined to follow the fixture holder 1 as it rotates along the lathe chuck, and also achieves self-fixed axis rotation. The purpose of the second fixture assembly is to include a boss 5, several pins 6, and several positioning pins 7. The boss 5 is located at the center of the fixture base 1. The pins 6 and positioning pins 7 are alternately arranged circumferentially at the edges of the surface of the fixture base 1. The top of the pins 6 has a protrusion, which can mate with the round holes on the workpiece to be processed. The positioning pins 7 can be inserted into the round holes on the workpiece to be processed. In actual use, the pins 6 and positioning pins 7 are respectively matched with the round holes on the upper surface of the workpiece to be processed. At the same time, the round protrusion on the bottom of the workpiece to be processed mates with the boss 5, so that the bottom of the workpiece to be processed is fixedly engaged with the surface of the fixture base 1, thereby fixing the workpiece to be processed on the fixture base 1. This completes the fixation of the workpiece to be processed, and then the workpiece to be processed can be processed. To ensure the stability of the pins 6 and positioning pins 7, the pins 6 and positioning pins 7 are welded to the surface of the fixture base 1. This can prevent the pins 6 and positioning pins 7 from breaking during processing, which would affect the processing of the workpiece.

[0029] To ensure that the workpiece is securely fixed on the second processing assembly, the height of the pin 6 relative to the surface of the fixture seat 1 is the same as the height of the positioning pin 7 relative to the surface of the fixture seat 1. This way, the workpiece will remain balanced during processing and will not tip over or fall.

[0030] Several limiting posts 8 are fixedly installed on the surface of the fixture base 1. The limiting posts 8 are distributed circumferentially around the outer periphery of the boss 5. The limiting posts 8 cooperate with the slots. When the circular protrusion of the workpiece to be processed is engaged with the boss 5, the cooperation between the limiting posts 8 and the slots can further ensure that the bottom of the workpiece to be processed is firmly fixed on the surface of the fixture base 1. The height of the limiting posts 8 relative to the surface of the fixture base 1 is less than the height of the boss 5. This can prevent the limiting posts 8 from piercing the bottom of the workpiece to be processed when the workpiece to be processed follows the fixture base 1 along the lathe chuck to the machining.

[0031] The workpiece to be processed is fixed by engaging with the pins 6, positioning pins 7, limiting pins 8, and bosses 5 on the second fixture assembly through its round holes, slots, and round protrusions. To improve the fixing strength of the workpiece during processing, a protective component for the workpiece body is provided on the fixture base 1. Specifically, a groove 9 is provided on the surface of the fixture base 1 between adjacent pins 6 and positioning pins 7. A protective plate 10 is inserted into each groove 9. The shape of the protective plate 10 matches the shape of the workpiece body. After the workpiece is fixed on the second assembly, the protective plate 10 is inserted into the groove 9 and made to fit against the workpiece body, thereby fixing and protecting the workpiece body.

[0032] Furthermore, it is necessary to fix the top edge area of ​​the workpiece to be processed. Therefore, a locking assembly is threadedly connected to the top of the guard plate 10. The top of the guard plate 10 has a connecting hole 11 with internal threads. The locking assembly includes a connecting rod 12. The outer periphery of the connecting rod 12 has external threads that mate with the internal threads. An L-shaped clamping plate 13 is fixedly connected to the top of the connecting rod 12. Specifically, after the workpiece to be processed is fixed on the second clamping assembly, the guard plate 10 is first inserted into the groove 9 to fit against the body of the workpiece to be processed. Then, the connecting rod 12 is screwed into the connecting hole 11, and the edge of the top of the workpiece to be processed is clamped into the L-shaped clamping plate 13, thereby achieving the fixation and protection of the top of the workpiece to be processed.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A self-aligning spindle fixture for metalworking, comprising a fixture base (1) and a fixture assembly disposed on the fixture base (1), characterized in that, The fixture assembly includes a first fixture assembly and a second fixture assembly. The first fixture assembly is located at the bottom of the fixture seat (1), and the second fixture assembly is located on the surface of the fixture seat (1). The first fixture assembly includes a first jaw (2), a second jaw (3), and a third jaw (4) circumferentially disposed at the bottom of the fixture seat (1). The first jaw (2), the second jaw (3), and the third jaw (4) are used to cooperate with the lathe chuck to realize the tooling fixture rotating along the self-fixed axis of the lathe chuck. The second fixture assembly includes a boss (5), a plurality of pins (6), and a plurality of positioning pins (7). The boss (5) is located at the center of the fixture seat (1), and the pins (6) and the positioning pins (7) are alternately circumferentially disposed at the edge of the surface of the fixture seat (1).

2. The self-aligning spindle fixture for metal processing according to claim 1, characterized in that, The height of the pin (6) relative to the surface of the clamp seat (1) is the same as the height of the positioning pin (7) relative to the surface of the clamp seat (1).

3. A self-aligning spindle fixture for metal processing according to claim 1, characterized in that, The fixture seat (1) has several limiting posts (8) fixedly installed on its surface, and the limiting posts (8) are circumferentially distributed around the boss (5).

4. A self-aligning spindle fixture for metal processing according to claim 3, characterized in that, The height of the limiting post (8) relative to the surface of the clamp seat (1) is less than the height of the boss (5).

5. A self-aligning spindle fixture for metal processing according to claim 3, characterized in that, Both the pin (6) and the positioning post (7) are welded to the surface of the clamp seat (1).

6. A self-aligning spindle fixture for metalworking according to claim 1, characterized in that, The surface of the clamp seat (1) is provided with a groove (9) between the adjacent pins (6) and the positioning post (7), and a guard plate (10) is inserted into each groove (9).

7. A self-aligning spindle fixture for metalworking according to claim 6, characterized in that, The top of the guard plate (10) is threaded with a locking assembly. The top of the guard plate (10) has a connecting hole (11) with an internal thread. The locking assembly includes a connecting rod (12). The outer periphery of the connecting rod (12) is provided with an external thread that mates with the internal thread. The top of the connecting rod (12) is fixedly connected with an L-shaped locking plate (13).

Images