Positioning tool for processing tail sleeve

Abstract

The utility model relates to positioning frock technical field, and disclose a kind of positioning frock for tail sleeve processing, including base, sleeve and tail cover, the upper end of the base is rotatably installed with two groups of symmetrically designed cylinder, the cylinder is close to the front side position and is all provided with semicircle block, the front end outer edge of the tail cover is provided with three groups of arc surface groove of circular array arrangement, the inside of the sleeve is provided with sliding slot in middle, the inside of the sliding slot is slidably installed with sliding block, the front end middle of the sliding block is fixedly connected with abutment rod, the front end middle of the abutment rod is provided with main limiting rod, the front end of the abutment rod is provided with six groups of auxiliary limiting rod of circular array arrangement at the outside of main limiting rod. The positioning frock realizes mistake-proof clamping effect, it is convenient and fast to use and can avoid the purpose of scratch, effectively avoid the angle deviation caused by manual operation error, guarantee the machining precision of target hole, reduce the scrap rate.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a positioning tooling for processing tail sleeves. Background Technology

[0002] During the machining of the tail sleeve, the milling of the target hole and color mark groove requires high precision. Currently, a universal indexing head is often used for angular positioning of the tail sleeve during machining. However, in actual operation, because it is difficult for workers to accurately control the angle of the arc groove at all times when operating the universal indexing head, the arc groove often fails to be in the upper center. Since the angles of the target hole and the arc groove must correspond one-to-one, this deviation will directly lead to misalignment of the target hole, resulting in workpiece machining failure, material waste, and reduced production efficiency.

[0003] Meanwhile, traditional positioning methods often use bolts and other components for limiting and fixing, which is not only cumbersome to operate and reduces processing efficiency, but also causes scratches to be left by the friction between the bolts and the workpiece surface during clamping, affecting the appearance of the workpiece. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for processing tail sleeves, which solves some of the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a positioning fixture for processing a tail sleeve, comprising a base, a sleeve, and a tail sleeve. Two sets of symmetrically designed cylinders are rotatably mounted on the upper end of the base. Semicircular blocks are provided on each cylinder near the front side. Three sets of arc-shaped grooves arranged in a circular array are provided at the outer edge of the front end of the tail sleeve. The arc-shaped grooves are adapted to the cylinders. A sliding groove is provided in the middle of the inner part of the sleeve. A slider is slidably installed inside the sliding groove. A stop rod is fixedly connected to the middle of the front end of the slider. The stop rod extends through the sleeve to the outside. A main limiting rod is provided in the middle of the front end of the stop rod. Six sets of auxiliary limiting rods arranged in a circular array are provided at the front end of the stop rod outside the main limiting rod.

[0006] Furthermore, a through hole is provided at the middle of the front end of the tail sleeve, which is adapted to the main limiting rod. Six sets of evenly distributed positioning holes are provided on the outside of the through hole at the front end of the tail sleeve, which are adapted to the auxiliary limiting rod.

[0007] Furthermore, a key sleeve is fixedly connected to the front end of the sleeve at the outside of the abutment rod, and the outer side of the key sleeve fits against the inner wall of the tail sleeve opening.

[0008] Furthermore, an electric push rod is fixedly installed at the middle of the rear end of the sleeve, and the telescopic end of the electric push rod passes through the slide groove and is fixedly connected to the slider.

[0009] Furthermore, the tail sleeve has three sets of evenly distributed target holes near the middle, and the target holes correspond one-to-one with the arc grooves. The tail sleeve also has color mark grooves near the rear opening, and the color mark grooves correspond to one of the arc grooves and target holes.

[0010] Furthermore, a movable seat is fixedly connected to the lower end of the base, and guide rods are slidably connected through the interior of the movable seat near the left and right sides, and a lead screw is threaded through the middle of the interior of the movable seat.

[0011] The advantages of this utility model are as follows:

[0012] 1. This positioning fixture, through its ingenious structural design, utilizes three sets of equally distributed arc-shaped grooves that fit with the cylinder, as well as the semi-circular block and the sleeve, to achieve initial positioning of the tail sleeve in multiple directions when clamping it. Simultaneously, the precise movement of the push rod, main limit rod, and auxiliary limit rod, driven by the electric push rod, further enhances the positioning effect of the tail sleeve. As a result, when machining the target hole, the tail sleeve and the arc-shaped grooves maintain an accurate one-to-one correspondence, effectively avoiding angular deviations caused by human error, ensuring the machining accuracy of the target hole, and reducing the scrap rate.

[0013] 2. This positioning fixture eliminates the cumbersome traditional method of using bolts and other components for limiting and fixing. Operators can quickly complete the clamping and positioning of the tail sleeve by simply turning the handwheel, controlling the electric push rod, and adjusting the rotation of the tail sleeve. After processing, the tail sleeve can be easily and quickly released for subsequent processing operations or removal. The whole process is simple to operate, requiring no complicated operating skills or additional auxiliary tools, which greatly saves operating time, improves processing efficiency, and avoids the problem of scratching the workpiece surface and affecting its appearance by using some sharp structures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial cross-sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the forming structure of the tail sleeve processing part of this utility model.

[0017] In the diagram: 1. Base; 2. Sleeve; 3. Tail sleeve; 4. Cylinder; 5. Semicircular block; 6. Arc groove; 7. Slide groove; 8. Slider; 9. Abutment rod; 10. Main limit rod; 11. Auxiliary limit rod; 12. Through hole; 13. Positioning hole; 14. Key sleeve; 15. Electric push rod; 16. Color mark groove; 17. Target hole; 18. Moving seat; 19. Guide rod; 20. Lead screw. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3A positioning fixture for processing a tail sleeve includes a base 1, a sleeve 2, and a tail sleeve 3. Two symmetrically designed cylinders 4 are rotatably mounted on the upper end of the base 1. Semicircular blocks 5 are provided on each cylinder 4 near its front side. Three sets of arc-shaped grooves 6 arranged in a circular array are provided at the outer edge of the front end of the tail sleeve 3. The arc-shaped grooves 6 are adapted to fit the cylinders 4. A sliding groove 7 is provided in the middle of the interior of the sleeve 2. A slider 8 is slidably mounted inside the sliding groove 7. A stop rod 9 is fixedly connected to the middle of the front end of the slider 8. The stop rod 9 extends through the sleeve 2 to the outside. A main limiting rod 10 is provided at the middle of the front end of the stop rod 9. Six sets of circular arrays are provided on the outer side of the main limiting rod 10 at the front end of the stop rod 9. The auxiliary limiting rods 11 are arranged in a row. A through hole 12 is provided at the middle of the front end of the tail sleeve 3. The through hole 12 is adapted to the main limiting rod 10. Six sets of evenly distributed positioning holes 13 are provided on the outside of the through hole 12 at the front end of the tail sleeve 3. The positioning holes 13 are adapted to the auxiliary limiting rods 11. A key sleeve 14 is fixedly connected to the front end of the sleeve 2 on the outside of the abutment rod 9. The outside of the key sleeve 14 fits against the inner wall of the opening of the tail sleeve 3. In use, the sleeve 2 is clamped in the three-jaw chuck of the milling machine for fixation. When clamping the tail sleeve 3, its open end is pressed against the outside of the key sleeve 14 on the sleeve 2. Then, by rotating the corresponding handwheel on the milling machine, the lead screw 20 can be rotated, thereby driving the moving seat 18 to move the base. 1. During the movement of the base 1 to the tail sleeve 3, by adjusting and rotating the tail sleeve 3, the two sets of arc grooves 6 on its lower side can be made to fit exactly against the cylinder 4. Since the three sets of arc grooves 6 are equally distributed, the other set of arc grooves 6 will definitely be located in the upper middle. By rotating the cylinder 4, the semicircular block 5 can be rotated to the front end of the tail sleeve 3 to achieve a limit. By opening the electric push rod 15, its telescopic end can drive the slider 8 to extend the stop rod 9 and abut it against the inside of the tail sleeve 3. At the same time, the main limiting rod 10 passes through the through hole 12, and the auxiliary limiting rod 11 passes through the positioning hole 13. Since the angles are matched, this operation will not cause any problems due to changes in the correspondence between the arc grooves 6 and the cylinder 4. If the alignment is incorrect, after completing the above operations, the tail sleeve 3 is positioned by the fit between the cylinder 4 and the arc groove 6. The cylinder 4 and the key sleeve 14 support and limit the tail sleeve 3 to prevent vertical shaking. The semi-circular block 5 and the sleeve 2 control the horizontal shaking of the tail sleeve 3. The slider 8 and the auxiliary limiting rod 11 limit and fix the tail sleeve 3 in the rotation direction. This ensures that the tail sleeve 3 can be aligned one-to-one when milling the target hole 17 and the color mark groove 16 without the need for additional angular positioning by the operator. The angular positioning is accurate, achieving the purpose of preventing incorrect clamping and avoiding quality problems caused by human error.

[0020] Please see Figures 1-3An electric push rod 15 is fixedly installed at the middle of the rear end of sleeve 2. The telescopic end of the electric push rod 15 passes through the slide groove 7 and is fixedly connected to the slider 8. Three sets of evenly distributed target holes 17 are provided on the tail sleeve 3 near the middle. The target holes 17 correspond one-to-one with the arc grooves 6. A color mark groove 16 is provided on the tail sleeve 3 near the rear opening. The color mark groove 16 corresponds to one set of arc grooves 6 and target holes 17. A movable seat 18 is fixedly connected to the lower end of the base 1. Guide rods 19 are slidably connected through the interior of the movable seat 18 near the left and right sides. A lead screw 20 is threaded through the middle of the interior of the movable seat 18. When the target hole 17 is completed, the electric push rod 15 drives the support rod 9 and other structures to move backward and separate from the tail sleeve 3. By rotating the handwheel, the moving seat 18 can be moved to slightly separate the base 1 from the tail sleeve 3, thereby releasing the restriction on the tail sleeve 3. The above operation can be performed to process another target hole 17 by adjusting and rotating the tail sleeve 3, or the tail sleeve 3 can be removed. The operator only needs to operate the base 1 to move to achieve the separation and engagement between the cylinder 4 and the arc groove 6. There is no need to pay extra attention to the alignment between the holes. The operation is simple and easy to learn. At the same time, this device does not require the use of bolts or other components for limiting and fixing, which improves the processing efficiency and avoids scratches on the surface of the workpiece that affect its appearance.

[0021] Working principle: In use, sleeve 2 is clamped and fixed in the three-jaw chuck of the milling machine. When clamping the tail sleeve 3, its open end is pressed against the outside of the key sleeve 14 on sleeve 2. Then, by rotating the corresponding handwheel on the milling machine, the lead screw 20 can be rotated, thereby driving the moving seat 18 to move the base 1. During the process of the base 1 moving to the tail sleeve 3, by adjusting the rotation of the tail sleeve 3, the two sets of arc grooves 6 on its lower side can be made to fit exactly against the cylinder 4. Since the three sets of arc grooves 6 are equally distributed, the other set of arc grooves 6 will definitely be in the middle of the upper side. By rotating the cylinder 4, the semicircular block 5 can be rotated to the front end of the tail sleeve 3 to achieve the limit. By opening the electric push rod 15, its telescopic end can drive the slider 8 to extend the stop rod 9 and press it against the inside of the tail sleeve 3. At the same time, the main limit rod 10 passes through the through hole 12, and the auxiliary limit rod 11 passes through the positioning hole 13. Since the angles are matched, this operation will not be affected by changes in the arc grooves 6 and the cylinder 4. The misalignment caused by the correspondence between cylinders 4 is addressed by the following steps: After completing the above operations, the tail sleeve 3 is positioned by the fit between cylinder 4 and arc groove 6; cylinder 4 and key sleeve 14 provide support and limit for the tail sleeve 3 to prevent vertical wobbling; semicircular block 5 and sleeve 2 control the horizontal wobbling of the tail sleeve 3; and slider 8 and auxiliary limiting rod 11 limit and fix the tail sleeve 3 in the rotation direction. This ensures that the tail sleeve 3 can be aligned one-to-one when milling the target hole 17 and color mark groove 16. After machining the target hole 17, the electric push rod 15 moves the abutment rod 9 and other structures backward to separate them from the tail sleeve 3. By rotating the handwheel, the moving seat 18 can be moved to slightly separate the base 1 from the tail sleeve 3, thus releasing the restriction on the tail sleeve 3. The above operations can then be performed by adjusting and rotating the tail sleeve 3 to machine another target hole 17, or the tail sleeve 3 can be removed.

Claims

1. A positioning fixture for machining a tail sleeve, comprising a base (1), a sleeve (2), and a tail sleeve (3), characterized in that: Two sets of symmetrically designed cylinders (4) are rotatably mounted on the upper end of the base (1). Semicircular blocks (5) are provided on each cylinder (4) near the front side. Three sets of arc-shaped grooves (6) arranged in a circular array are provided at the outer edge of the front end of the tail sleeve (3). The arc-shaped grooves (6) are adapted to the cylinders (4). A sliding groove (7) is provided in the middle of the inner part of the sleeve (2). A slider (8) is slidably installed inside the sliding groove (7). A stop rod (9) is fixedly connected to the middle of the front end of the slider (8). The stop rod (9) extends through the sleeve (2) to the outside. A main limiting rod (10) is provided in the middle of the front end of the stop rod (9). Six sets of auxiliary limiting rods (11) arranged in a circular array are provided at the outer side of the main limiting rod (10) at the front end of the stop rod (9).

2. The positioning fixture for machining a tail sleeve according to claim 1, characterized in that: The tail sleeve (3) has a through hole (12) at the middle of its front end. The through hole (12) is adapted to the main limiting rod (10). The front end of the tail sleeve (3) has six sets of evenly distributed positioning holes (13) on the outside of the through hole (12). The positioning holes (13) are adapted to the auxiliary limiting rod (11).

3. The positioning fixture for machining a tail sleeve according to claim 1, characterized in that: The front end of the sleeve (2) is fixedly connected to a key sleeve (14) on the outside of the abutment (9), and the outside of the key sleeve (14) is in contact with the inner wall of the opening of the tail sleeve (3).

4. The positioning fixture for machining a tail sleeve according to claim 1, characterized in that: An electric push rod (15) is fixedly installed at the middle of the rear end of the sleeve (2). The front end of the electric push rod (15) extends through the slide groove (7) and is fixedly connected to the slider (8).

5. A positioning fixture for machining a tail sleeve according to claim 1, characterized in that: The tail sleeve (3) has three sets of evenly distributed target holes (17) near the middle. The target holes (17) correspond one-to-one with the arc grooves (6). The tail sleeve (3) has a color mark groove (16) near the rear opening. The color mark groove (16) corresponds to one set of arc grooves (6) and target holes (17).

6. The positioning fixture for machining a tail sleeve according to claim 1, characterized in that: The lower end of the base (1) is fixedly connected to a movable seat (18). The interior of the movable seat (18) is slidably connected with guide rods (19) near the left and right sides. The interior of the movable seat (18) is threadedly connected with a lead screw (20) in the middle.

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