Automatic positioning device suitable for T-shaped pull rod blank in machining industry
By combining the fixed V-shaped block and floating V-shaped block with the design of threaded seats and return springs, the problem of existing fixtures being unable to balance the blank errors is solved, and the accurate positioning of T-shaped pull rod blanks is achieved to meet the actual needs of mechanical processing.
Patent Information
- Application Number
- CN202422553178.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-22
AI Technical Summary
Existing fixtures cannot balance the blank error when positioning T-shaped pull rod blanks, resulting in the inability to achieve accurate positioning.
The fixed V-shaped block and floating V-shaped block are combined with the threaded seat and return spring design, and the automatic reset principle of V-shaped block and spring is used to realize the main positioning and auxiliary positioning. The local positioning is completed and the rotational power is transmitted through the fixed V-shaped block. The floating V-shaped block and the return spring achieve symmetric floating positioning together.
It can balance the blank error, so as to accurately locate regardless of the actual error of the blank, and meet actual processing needs.
Smart Images
Figure CN223235678U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of positioning devices, and more specifically, to an automatic positioning device suitable for T-shaped pull rod blanks in the mechanical processing industry. Background Art
[0002] "T"-shaped tie rod is a relatively important part in mechanical power devices. It is often used in operating systems and is used in conjunction with other parts. The basic form of the "T"-shaped tie rod is that the long horizontal rod and the short vertical rod are perpendicular to each other. The two rod parts are machined in two processes. The processing process is: Process A: Turn (mill) the right end face of the blank and punch the center hole; Process B: Process the long horizontal rod with the vertical short rod in the blank state as the reference; Process C: Use the processed long horizontal rod as the precise reference to process the two outer circles of the short vertical rod. The blanks of "T"-shaped tie rod parts are produced according to the batch size. There are blanks, castings, forgings, etc. Most of them are formed in large batches by casting and forging. The existing fixture cannot balance the blank error when positioning the "T"-shaped tie rod. When there is an error in the blank, accurate positioning cannot be achieved.
[0003] Therefore, there is an urgent need for an automatic positioning device for T-type tie rod blanks in the machining industry to solve the above problems. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an automatic positioning device for T-type pull rod blanks in the mechanical processing industry. By providing structures such as fixed V-blocks, floating V-blocks and threaded seats, the present invention utilizes the principle that V-blocks and springs can automatically reset. A set of fixed V-blocks is used in the fixture design as the main positioning to achieve local positioning and transmit the power of workpiece rotation. Another set of floating V-blocks, together with the reset spring, is used as auxiliary positioning and is arranged in the orthogonal direction of the workpiece to achieve symmetrical floating positioning of the workpiece. The top center of the lathe tailstock presses against the top center hole at the right end of the long cross bar of the workpiece and gradually approaches the fixed V-block. When the main positioning is completed, the floating V-block also completes the auxiliary positioning at the same time. The workpiece is completely positioned. The fixture is fixed with a lathe chuck and rotational power is provided to meet the actual processing conditions, so that the present invention can balance the blank error and achieve accurate positioning regardless of the actual error of the supplied blank, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic positioning device suitable for T-type pull rod blanks in the mechanical processing industry, comprising a clamping cylinder, a mounting plate is provided on one side of the clamping cylinder, a fixed V-block is provided on one side of the mounting plate, floating V-blocks are provided on the top and bottom of the fixed V-block, a limiting seat is provided on the side of the floating V-block away from the fixed V-block, a threaded seat is provided inside the limiting seat, a locking nut is provided on the end of the threaded seat away from the floating V-block, a reset spring is provided on the outer side of the threaded seat, a limiting fixed block is provided on the floating V-block, and the limiting fixed block is fixed to the mounting plate by screws.
[0006] In a preferred embodiment, one end of the threaded seat close to the floating V-block is fixedly mounted on the floating V-block.
[0007] In a preferred embodiment, the two floating V-blocks are symmetrically arranged on the top and bottom of the fixed V-block.
[0008] In a preferred embodiment, the limiting seat is fixed on the mounting plate by screws.
[0009] In a preferred embodiment, the locking nut is threadedly connected to the threaded seat, and the floating V-block is slidably connected to the mounting plate.
[0010] The technical effects and advantages of this utility model are:
[0011] The utility model is provided with structures such as fixed V-blocks, floating V-blocks and threaded seats, so that the utility model utilizes the principle that V-blocks and springs can automatically reset. A set of fixed V-blocks is used in the fixture design as the main positioning to achieve local positioning and transmit the power of workpiece rotation. The other set of floating V-blocks, together with the reset spring, are used as auxiliary positioning and are arranged in the orthogonal direction of the workpiece to achieve symmetrical floating positioning of the workpiece. The top of the lathe tailstock supports the top hole at the right end of the long cross bar of the workpiece and gradually approaches the fixed V-block. When the main positioning is completed, the floating V-block also completes the auxiliary positioning at the same time. The workpiece is completely positioned. The fixture is fixed with a lathe chuck and rotational power is provided to meet the actual processing conditions, so that the utility model can balance the error of the blank and achieve accurate positioning regardless of the actual error of the supplied blank. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0013] The accompanying drawings are marked as follows: 1. Clamping cylinder; 2. Mounting plate; 3. Fixed V-block; 4. Floating V-block; 5. Threaded seat; 6. Locking nut; 7. Return spring. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0015] As attached Figure 1 As shown, the utility model provides an automatic positioning device suitable for T-type pull rod blanks in the mechanical processing industry, including a clamping cylinder 1, a mounting plate 2 is provided on one side of the clamping cylinder 1, a fixed V-block 3 is provided on one side of the mounting plate 2, and floating V-blocks 4 are provided on the top and bottom of the fixed V-block 3. A limiting seat 8 is provided on the side of the floating V-block 4 away from the fixed V-block 3, a threaded seat 5 is provided inside the limiting seat 8, and a locking nut 6 is provided on the end of the threaded seat 5 away from the floating V-block 4, a reset spring 7 is provided on the outer side of the threaded seat 5, a limiting fixed block is provided on the floating V-block 4, and the limiting fixed block is fixed to the mounting plate 2 by screws.
[0016] One end of the threaded seat 5 close to the floating V-block 4 is fixedly mounted on the floating V-block 4 .
[0017] The two floating V-blocks 4 are symmetrically arranged on the top and bottom of the fixed V-block 3 .
[0018] The limiting seat 8 is fixed on the mounting plate 2 by screws.
[0019] The locking nut 6 is threadedly connected to the threaded seat 5 , and the floating V-block 4 is slidably connected to the mounting plate 2 .
[0020] The specific implementation method is as follows: when using the utility model, the fixed V-block 3 is used as the main positioning to complete the X and Z direction positioning of the short vertical rod and provide the power for the workpiece rotation. The floating V-block 4 and the return spring 7 are used together as the auxiliary positioning of the workpiece and are arranged in the orthogonal direction of the workpiece to achieve symmetrical floating positioning of the workpiece. The two coaxial and symmetrically arranged return springs 7 act on the rear ends of the two floating V-blocks 4 respectively. The deviation of the workpiece in the up and down directions automatically slides to the spring force balance position after contacting the inclined surface of a floating V-block 4, and the two floating V-blocks 4 are balanced to achieve the opposite synchronous movement, symmetrical floating positioning of the workpiece, and ensure that the center position remains unchanged, thus completing the Y direction positioning of the V-block short vertical rod. The threaded connection structure is used to adjust the two threads. The position of the seat 5 can compensate for the difference in the force of the reset spring 7 and the processing error of the two floating V-blocks 4, so that the oblique surfaces of the two V-blocks are symmetrical to the rotation center line of the lathe. The lower structure of the floating V-block 4 is provided with a raised falcon block, so that the floating V-block 4 can slide in the groove of the clamping body mounting plate 2. On the side of the floating V-block 4, a set of limit fixing blocks are symmetrically arranged to ensure that the floating V-block 4 can stably slide along the straight line of the groove and limit its tendency to flip. The angle design of the floating V-block 4 must ensure that there is sufficient component force in the sliding direction to ensure that the two floating V-blocks 4 slide smoothly and synchronously. The processing of the floating V-block 4 is mainly based on simultaneous clamping processing, so that there is no angle processing error. The focus of the angle design of the floating V-block 4 is to reduce friction resistance The higher the hardness of the V-block and the better the surface roughness, the smaller the friction with the workpiece and the smaller the workpiece positioning error. The material of the workpiece is mainly steel, with a small amount of copper and aluminum. Considering the friction coefficient between these materials and the V-block and actual use, the angle of the V-block is preferably 53°-57°. The size changes of workpieces in different batches are also automatically adapted by the floating V-block 4 floating back and forth. The top of the lathe tailstock supports the top hole on the right end of the long crossbar of the workpiece, and gradually approaches the fixed V-block 3. When the main positioning is completed, the floating V-block 4 also completes the auxiliary positioning at the same time. The workpiece is fully positioned. The fixture uses a lathe chuck as the whole, and the clamping end clamps the cylinder 1. The geometric center of the fixture is the rotation center of the lathe. The long crossbar positioning is achieved by using the top of the machine tailstock. The top hole on the right end face of the workpiece is pressed against the top hole, so that the fixture and the workpiece are fully positioned and connected to the lathe as a whole, with sufficient rigidity to meet the actual processing needs. This enables the utility model to utilize the principle of automatic reset of V-blocks and springs, and to design a set of fixed V-blocks 3 for the fixture as the main positioning to achieve local positioning and transmit the power of workpiece rotation. Another set of floating V-blocks 4, together with the reset spring 7, are used as auxiliary positioning and are arranged in the orthogonal direction of the workpiece to achieve symmetrical floating positioning of the workpiece. The top of the lathe tailstock presses against the top hole on the right end of the long cross bar of the workpiece and gradually approaches the fixed V-block 3. When the main positioning is completed, the floating V-block 4 also completes the auxiliary positioning at the same time. The workpiece is fully positioned and the fixture is fixed with the lathe chuck.Providing rotational power provides the actual processing conditions, so that the present invention can balance the errors of the blanks and achieve accurate positioning regardless of the actual errors of the blanks supplied.
[0021] Working principle of this utility model:
[0022] Refer to the instruction manual Figure 1 When using the present invention, by providing structures such as a fixed V-block 3, a floating V-block 4 and a threaded seat 5, the present invention utilizes the principle that the V-block and the spring can automatically reset, and is used in the fixture design. A set of fixed V-blocks 3 is used as the main positioning to achieve local positioning and transmit the power of workpiece rotation. Another set of floating V-blocks 4, together with the reset spring 7, is used as auxiliary positioning and is arranged in the orthogonal direction of the workpiece to achieve symmetrical floating positioning of the workpiece. The top of the lathe tailstock presses against the top hole at the right end of the long cross bar of the workpiece and gradually approaches the fixed V-block 3. When the main positioning is completed, the floating V-block 4 also completes the auxiliary positioning at the same time. The workpiece is completely positioned, the fixture is fixed with a lathe chuck, and the actual processing conditions are met by providing rotational power, so that the present invention can balance the error of the blank and achieve accurate positioning regardless of the actual error of the supplied blank.
[0023] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.
[0024] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.
[0025] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An automatic positioning device for T-type tie rod blanks in the machining industry, comprising a clamping cylinder (1), characterized in that: A mounting plate (2) is provided on one side of the clamping cylinder (1), a fixed V-shaped block (3) is provided on one side of the mounting plate (2), a floating V-shaped block (4) is provided on the top and bottom of the fixed V-shaped block (3), a limiting seat (8) is provided on the side of the floating V-shaped block (4) away from the fixed V-shaped block (3), a threaded seat (5) is provided inside the limiting seat (8), a locking nut (6) is provided on the end of the threaded seat (5) away from the floating V-shaped block (4), a reset spring (7) is provided on the outer side of the threaded seat (5), a limiting fixed block is provided on the floating V-shaped block (4), and the limiting fixed block is fixedly mounted on the mounting plate (2) by screws.
2. The automatic positioning device for T-type tie rod blanks in the machining industry according to claim 1 is characterized by: One end of the threaded seat (5) close to the floating V-shaped block (4) is fixedly mounted on the floating V-shaped block (4).
3. The automatic positioning device for T-type tie rod blanks in the machining industry according to claim 1 is characterized by: The two floating V-shaped blocks (4) are symmetrically arranged on the top and bottom of the fixed V-shaped block (3).
4. The automatic positioning device for T-type tie rod blanks in the machining industry according to claim 1 is characterized by: The limiting seat (8) is fixedly mounted on the mounting plate (2) by screws.
5. The automatic positioning device for T-type tie rod blanks in the machining industry according to claim 1 is characterized in that: The locking nut (6) is threadedly connected to the threaded seat (5), and the floating V-shaped block (4) is slidably connected to the mounting plate (2).