Limiting step clamp

Abstract

The utility model discloses a limit step clamp, relates to clamp technical field, including upper flange plate, lower flange plate, expansion and contraction main part and expansion and contraction drive rod that connect mutually, the expansion and contraction main part is connected to the bottom end of upper flange plate, when the expansion and contraction main part receives outward acting force, the stress area can expand outward, and the expansion and contraction drive rod can drive the expansion and contraction main part to expand outward. The expansion and contraction driving rod is movably arranged in the expansion and contraction main body, an expansion and contraction head is arranged at the bottom end of the expansion and contraction driving rod, and the expansion and contraction main body can expand outwards through the expansion and contraction head. Compared with a traditional clamp, the limiting step clamp has the advantages that the problem of machining blocking caused by the fact that the workpiece is clamped from the outside is solved, inner supporting type fixing of the workpiece is innovatively achieved, it is guaranteed that the outside of the workpiece is not blocked, one-time all-directional machining is achieved, and the machining efficiency is greatly improved; due to the design of the clamp, the mounting, fixing and dismounting processes of the workpiece become simple and rapid, the angle of the workpiece does not need to be adjusted for multiple times for step-by-step machining, the labor intensity of workers is greatly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a limit step jig. Background Technique

[0002] In the field of machining, it is a common process to use machine tools to precisely machine workpieces. To ensure the stability and accuracy during the machining process, the workpiece must be firmly fixed before machining. Currently, the industry generally uses jigs to achieve this fixing step. The jig applies an inward clamping force from the outside by clamping the outside of the workpiece, thereby ensuring that the workpiece does not move or vibrate during machining.

[0003] However, there is a significant limitation in the design of existing jigs, especially when machining the outer surface of a workpiece. Since the jig clamps the outside of the workpiece, it often blocks the area to be machined. In this case, the machining process becomes complex and inefficient. First, the area on the workpiece surface not blocked by the jig must be machined; subsequently, the jig needs to be loosened and the machining angle of the workpiece needs to be adjusted to perform secondary machining on the previously blocked area. This step-by-step machining method not only increases the complexity of the operation, but also prolongs the machining cycle and reduces production efficiency. Therefore, we propose a limit step jig. When fixing the workpiece, this jig applies an outward supporting force from the inside of the workpiece to fix the workpiece. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a limit step jig, which solves the problems put forward in the above background technique.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A limit step jig includes a connected upper flange and a lower flange, and further includes:

[0006] A telescopic main body, the telescopic main body is connected to the bottom end of the upper flange, and penetrates inside the lower flange, and the bottom end is exposed outside the lower flange. When the telescopic main body is subjected to an outward acting force, the stressed area can expand outward, and when not stressed, the telescopic main body can recover;

[0007] A telescopic driving rod, the telescopic driving rod is movably arranged in the telescopic main body, and a telescopic head is arranged at the bottom end of the telescopic driving rod, and the telescopic head can make the telescopic main body expand outward.

[0008] Furthermore, a plurality of telescopic slits and through holes are respectively formed on the surface of the telescopic main body, and the telescopic slits are communicated with the through holes.

[0009] Furthermore, a convex column is connected to the top end of the upper flange plate. A first thread is provided on the outer part of the convex column. A first jack is commonly formed inside the upper flange plate, the convex column and the expansion and contraction main body.

[0010] Furthermore, a second jack is formed through the inside of the lower flange plate. The expansion and contraction main body is inserted into the second jack, and a gap is reserved between the expansion and contraction main body and the second jack.

[0011] Furthermore, a contraction and expansion head is connected to the bottom end of the expansion and contraction driving rod. A second thread is provided at the top end of the expansion and contraction driving rod. The contraction and expansion head is of a conical structure.

[0012] Furthermore, after the expansion and contraction driving rod is inserted into the expansion and contraction main body, the contraction and expansion head is exposed outside the expansion and contraction main body.

[0013] The utility model provides a limit step clamp. Compared with the prior art, the following beneficial effects are achieved:

[0014] For this limit step clamp, compared with the problem of processing occlusion caused by clamping the workpiece from the outside by traditional clamps, this clamp innovatively realizes the inner support type fixation of the workpiece, ensuring that there is no occlusion outside the workpiece, thereby realizing one-time all-round processing, greatly improving the processing efficiency. The design of the clamp makes the installation, fixation and disassembly processes of the workpiece simple and fast, without the need to repeatedly adjust the angle of the workpiece for step-by-step processing, greatly reducing the labor intensity of workers and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a split schematic diagram of the utility model;

[0016] Figure 2 is an assembly schematic diagram of the utility model;

[0017] Figure 3 is a schematic diagram of the insertion rod located inside the expansion and contraction rod in the utility model;

[0018] Figure 4 is a half-sectional view after the assembly of the utility model.

[0019] In the figure: 1. Upper flange plate; 11. Expansion and contraction main body; 12. Expansion and contraction seam; 13. First thread; 14. First jack; 15. Through hole; 2. Lower flange plate; 21. Second jack; 3. Expansion and contraction driving rod; 31. Expansion and contraction head; 32. Second thread. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , the present invention provides a technical solution: a limit step fixture, mainly composed of an upper flange 1, a lower flange 2, a telescopic main body 11 and a telescopic driving rod 3. Among them, the upper flange 1 and the lower flange 2 are connected and fixed by a plurality of bolts. The top end of the upper flange 1 is integrally connected with a convex column with a thread 13 on the outside. The whole fixture is installed on the machine tool through the convex column and the thread 13.

[0022] The telescopic main body 11 is integrally connected to the bottom end of the upper flange 1. The surface of the telescopic main body 11 is respectively provided with a plurality of interconnected telescopic slits 12 and through holes 15. The upper flange 1, the convex column and the inside of the telescopic main body 11 are jointly provided with a first insertion hole 14. The inside of the lower flange 2 is penetrated with a second insertion hole 21. After the upper flange 1 and the lower flange 2 are connected, the telescopic main body 11 is inserted into the inside of the second insertion hole 21. After insertion, the bottom end of the telescopic main body 11 extends out of the inside of the second insertion hole 21 by a section, and a gap is reserved between the telescopic main body 11 and the second insertion hole 21. This gap is reserved for the space when the telescopic main body 11 expands outwards. The telescopic driving rod 3 penetrates through the inside of the telescopic main body 11 and the first insertion hole 14 from bottom to top. Through the thread 32 provided at the top of the telescopic driving rod 3, the telescopic driving rod 3 is installed on the telescopic component of the machine tool. After the telescopic driving rod 3 is inserted, the telescopic head 31 connected to its bottom end will be located at the bottom of the telescopic main body 11. The telescopic head 31 is a conical structure with a narrow bottom and a wide top. When the telescopic head 31 moves upwards, it will squeeze a section of the telescopic main body 11 that extends out, so that this part expands outwards. Before that, the workpiece to be clamped and fixed is sleeved on the outside of the section of the telescopic main body 11 that extends out.

[0023] The telescopic component of the machine tool pulls up the expansion and contraction drive rod 3, and the expansion and contraction head 31 moves upward accordingly. The expansion and contraction head 31 exerts an outward extrusion force on a section extended from the expansion and contraction main body 11. Under the action of the expansion and contraction seam 12 and the through hole 15, this part is promoted to expand, so as to support the workpiece to be processed outward, and the fixation of the workpiece can be completed. Similarly, when the workpiece is processed and needs to be removed, the telescopic component of the machine tool pushes down the expansion and contraction drive rod 3, and the expansion and contraction head 31 moves downward accordingly. The expansion and contraction head 31 no longer exerts an outward force on the expansion and contraction main body 11. At this time, the originally expanded expansion and contraction main body 11 will return to its initial state. That is to say, at this time, the workpiece no longer receives the outward supporting force from the expansion and contraction main body 11, and the workpiece can fall naturally.

Claims

1. A position limiting step fixture, comprising an upper flange (1) and a lower flange (2) connected to each other, characterized in that: Also includes: an expansion and contraction body (11), the expansion and contraction body (11) being connected to the bottom end of the upper flange (1) and inserted into the interior of the lower flange (2), with the bottom end exposed to the outside of the lower flange (2); when the expansion and contraction body (11) is subjected to an outward force, the force-bearing area can expand outward, and when no force is applied, the expansion and contraction body (11) can recover; An expansion and contraction driving rod (3), the expansion and contraction driving rod (3) being movably arranged in the expansion and contraction main body (11), the bottom end of the expansion and contraction driving rod (3) being provided with an expansion and contraction head (31), the expansion and contraction head (31) being able to allow the expansion and contraction main body (11) to expand outwards.

2. A position limiting step fixture according to claim 1, characterized in that: A plurality of expansion and contraction slits (12) and through holes (15) are respectively provided on the surface of the expansion and contraction main body (11), and the expansion and contraction slits (12) are in communication with the through holes (15).

3. A position limiting step fixture according to claim 1, characterized in that: The top end of the upper flange (1) is connected to a boss, the outside of the boss is provided with a thread (13), and the inside of the upper flange (1), the boss and the expansion and contraction body (11) are jointly provided with an insertion hole (14).

4. A position limiting step fixture according to claim 1, characterized in that: The lower flange (2) is provided with a second insertion hole (21) extending through the interior thereof, the expansion and contraction body (11) is inserted into the second insertion hole (21), and a gap is reserved between the expansion and contraction body (11) and the second insertion hole (21).

5. The position-limiting step fixture according to claim 1, characterized in that: The bottom end of the expansion and contraction driving rod (3) is connected to an expansion and contraction head (31), and the top end of the expansion and contraction driving rod (3) is provided with a second thread (32), and the expansion and contraction head (31) is a cone structure.

6. A position-limiting step fixture according to claim 5, characterized in that: After the expansion and contraction driving rod (3) is inserted into the expansion and contraction main body (11), the expansion and contraction head (31) is exposed outside the expansion and contraction main body (11).

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