Machining clamping fixture
By incorporating a built-in positioning mechanism in the vise and utilizing the design of a slider and adjustment components, the problem of inconsistent positioning in vise clamping methods during machining is solved, enabling rapid workpiece positioning and clamping, improving machining efficiency and simplifying operation.
Patent Information
- Application Number
- CN202520283036.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-21
AI Technical Summary
During machining, the vise clamping method makes it difficult to keep the workpiece in the same position, which requires repeated adjustments and verifications during mass production, affecting processing efficiency. At the same time, the external positioning device affects portability and the burden on operators.
Design a machining clamping fixture that uses a vise with a built-in positioning mechanism, including a slider and an adjustment component. The slider is driven to move by a lead screw, and the positioning plate is used to achieve rapid and accurate positioning and clamping of the workpiece. Magnets and limit pins are used to ensure the stability and portability of the positioning plate.
It enables rapid and accurate positioning and clamping of workpieces during mass production, improving processing efficiency, and reduces operational complexity and carrying inconvenience through integrated design.
Smart Images
Figure CN223762721U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of machining technology, and more specifically, relates to a machining clamping fixture. Background Technology
[0002] In short, a machining fixture is a piece of equipment specifically designed and manufactured for the purpose of accurately positioning and reliably clamping a workpiece during machining operations such as cutting, milling, drilling, and grinding. The main function of a fixture is to ensure the positional accuracy of the workpiece during machining, preventing it from moving or deforming due to cutting forces, gravity, or other external forces, thereby ensuring that the machined parts meet design requirements.
[0003] In machining, vises are often used to clamp workpieces. However, when mass-producing workpieces, it is difficult to keep the positions of the two sets of workpieces in the same position, which leads to repeated adjustments and verifications, seriously affecting machining efficiency.
[0004] Currently, the common approach to addressing the above issues is to improve positioning efficiency through external positioning devices. While this can effectively reduce adjustment and verification time, the use of external positioning devices presents compatibility issues with the vise, impacting the overall portability of the vise and increasing the burden on operators. Utility Model Content
[0005] In order to solve the problems existing in the prior art, this utility model aims to provide a machining clamping fixture to enable rapid and accurate positioning and clamping of workpieces during mass production, thereby improving work efficiency and achieving an integrated design.
[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:
[0007] A machining clamping fixture includes a vise, wherein clamping blocks are respectively provided at the jaws of the vise, and a positioning mechanism is provided in the clamping blocks located on the fixed jaws of the vise, and the positioning mechanism is used to position the workpiece clamped in the vise.
[0008] The positioning mechanism includes a slider that can slide within the clamping block and an adjustment component disposed within the clamping block. The slider is connected to the adjustment component, and the slider can move within the clamping block by being driven by the adjustment component. A positioning plate is disposed at one end of the slider, and the positioning plate is used to position the workpiece clamped in the vise.
[0009] Furthermore, the cross-section of the slider is I-shaped.
[0010] Furthermore, the outer surface of the slider does not protrude from the clamping surface of the clamping block.
[0011] Furthermore, the adjusting assembly includes a lead screw, a nut fixedly connected to the slider at the middle of the lead screw, and a bearing seat at each end of the lead screw. The lead screw is rotatably mounted in the clamping block through the bearing seats.
[0012] Furthermore, an internal hexagonal hole is provided on the end face of at least one end of the lead screw.
[0013] Furthermore, the positioning plate is hinged to the slider.
[0014] Furthermore, a receiving groove is provided on the slider located at the hinge end between the positioning plate and the slider, and the slider can be accommodated in the receiving groove as the positioning plate rotates.
[0015] Furthermore, a magnet is provided inside the receiving groove.
[0016] Furthermore, a limiting pin is provided on the positioning plate at the hinge end where the positioning plate and the slider are located, and a limiting hole adapted to the limiting pin is provided on the slider.
[0017] The beneficial effects of this utility model are as follows: By setting a positioning mechanism at the jaws of the vise, this utility model enables the workpiece to be quickly and accurately positioned and clamped during the mass production process, thereby improving work efficiency. At the same time, it achieves an integrated design, making it easy to carry.
[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of the clamp of this utility model;
[0021] Figure 2 This is a schematic diagram of the positioning mechanism of this utility model connected to the clamping block;
[0022] Figure 3 This is a schematic diagram of the positioning mechanism of this utility model;
[0023] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;
[0024] Figure 5 This is a schematic diagram of the positioning plate of this utility model in its unfolded state;
[0025] Figure 6 This is a schematic diagram of the positioning state of the fixture of this utility model;
[0026] Figure 7 This utility model Figure 6 Enlarged view of section B in the middle.
[0027] The following are the labels in the diagram: 1. Vise; 2. Clamping block; 3. Positioning mechanism; 4. Magnet; 5. Limit pin; 31. Slider; 32. Adjustment component; 33. Positioning plate; 311. Receiving groove; 312. Limiting hole; 321. Lead screw; 322. Nut; 323. Bearing seat; 3211. Socket hexagon hole. Detailed Implementation
[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0030] See Figure 1-2 As shown, a machining clamping fixture includes a vise 1, with clamping blocks 2 respectively provided at the jaws of the vise 1. In this embodiment, a positioning mechanism 3 is provided in the clamping block 2 located on the fixed jaws of the vise 1, and the positioning mechanism 3 is used to position the workpiece clamped in the vise 1.
[0031] Among them, see Figure 3 As shown, in this embodiment, the positioning mechanism 3 includes a slider 31 that can slide within the clamping block 2 and an adjustment component 32 disposed within the clamping block 2. The slider 31 is connected to the adjustment component 32. During adjustment, the slider 31 can move within the clamping block 2 by being driven by the adjustment component 32. A positioning plate 33 is disposed at one end of the slider 31, and the positioning plate 33 is used to position the workpiece clamped in the vise 1. It should be noted that, in this embodiment, when the positioning plate 33 positions the workpiece, see... Figure 5As shown, the positioning plate 33 is perpendicular to the slider 31, and the positioning plate 33 is made of stainless steel.
[0032] Further, see Figure 3-5 As shown, in this embodiment, the cross-section of the slider 31 is I-shaped; and after the slider 31 is installed, the outer side of the slider 31 does not protrude from the clamping surface of the clamping block 2. In this embodiment, the outer side of the slider 31 is preferably slightly lower than the clamping surface of the clamping block 2.
[0033] Further, see Figure 3-4 As shown, in this embodiment, the adjusting component 32 includes a lead screw 321, a nut 322 fixedly connected to the slider 31 at the middle of the lead screw 321, and a bearing seat 323 at each end of the lead screw 321. The lead screw 321 is rotatably mounted in the clamping block 2 through the bearing seats 323. During adjustment, the operator drives the nut 322 to move back and forth along the lead screw 321 by rotating the lead screw 321, thereby driving the slider 31 to move in the clamping block 2. In this embodiment, in order to facilitate the rotation of the lead screw 321, an internal hexagonal hole 3211 is provided on the end face of one end of the lead screw 321, but it is not limited to one end; the internal hexagonal hole 3211 can also be provided at both ends of the lead screw 321.
[0034] Furthermore, in this embodiment, the positioning plate 33 and the slider 31 are hinged together. This hinged connection allows the positioning plate 33 to be retracted in the non-positioning state. In this embodiment, see... Figure 7 As shown, a receiving groove 311 is provided on the slider 31 at the hinge end of the positioning plate 33 and the slider 31. The slider 31 can be accommodated in the receiving groove 311 as the positioning plate 33 rotates, so that the positioning plate 33 can be completely accommodated in the slider 31 after the positioning plate 33 is folded up, thereby saving space and making it easy to carry.
[0035] Further details can be found by referring to [link / reference]. Figure 7 As shown, in this embodiment, in order to prevent the positioning plate 33, which is retracted into the receiving groove 311, from flipping out of the receiving groove 311 in the non-positioning working state, a magnet 4 is provided in the receiving groove 311, and the positioning plate 33 is attracted into the receiving groove 311 by the magnet 4.
[0036] Further, see Figure 4As shown, in this embodiment, a limiting pin 5 is provided on the positioning plate 33 at the hinge end where the positioning plate 33 and the slider 31 are located, and a limiting hole 312 adapted to the limiting pin 5 is provided on the slider 31. When the positioning plate 33 is in the positioning state, the limiting pin 5 passes through the limiting hole 312. Through the cooperation of the limiting pin 5 and the limiting hole 312, the positioning plate 33 is prevented from rotating in the slider 31 during the positioning operation. In this embodiment, the limiting pin 5 is made of plastic.
[0037] The working principle of this utility model is as follows:
[0038] Before use, please refer to Figure 6 As shown, depending on the size and specifications of the workpiece to be clamped, after separating the jaws of the vise 1 by a certain distance, turn the screw 321 with a wrench to adjust the slider 31 to an appropriate position, then unfold the positioning plate 33 from the receiving groove 311 and rotate it to be perpendicular to the slider 31.
[0039] When clamping, place the workpiece between the jaws of the vise 1, and then clamp the workpiece so that the side of the workpiece closest to the positioning plate 33 is against the positioning plate 33.
[0040] It should be noted that, through the above clamping method, when mass production of workpieces is carried out, except for the first workpiece which needs to be zero-point checked, subsequent workpieces can be directly clamped in the above manner, thereby achieving rapid and accurate positioning and clamping of workpieces and improving work efficiency.
[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A machining clamping fixture comprising a vice (1), the jaws of said vice (1) being provided with clamping blocks (2) respectively, characterized in that: The positioning mechanism (3) is arranged in the clamping block (2) of the vice (1), and the positioning mechanism (3) is used for positioning the clamped workpiece in the vice (1). The positioning mechanism (3) comprises a sliding block (31) and an adjusting assembly (32) arranged in the clamping block (2), the sliding block (31) is connected with the adjusting assembly (32), and the sliding block (31) is driven by the adjusting assembly (32) to move in the clamping block (2); one end of the sliding block (31) is provided with a positioning plate (33), and the positioning plate (33) is used for positioning the clamped workpiece in the vice (1).
2. The machine tool clamping fixture of claim 1, wherein: The sliding block (31) has a cross section in the shape of an I-beam.
3. The machine tool clamping fixture of claim 1, wherein: The outer side of the sliding block (31) is not protruded from the clamping surface of the clamping block (2).
4. The machine tool clamping fixture of claim 1, wherein: The adjusting assembly (32) comprises a screw rod (321), the middle part of the screw rod (321) is provided with a nut (322) fixedly connected with the sliding block (31), and the two ends of the screw rod (321) are respectively provided with a bearing seat (323), and the screw rod (321) is rotatably arranged in the clamping block (2) through the bearing seat (323).
5. The machine tool clamping fixture of claim 4, wherein: An internal hexagonal hole (3211) is formed in the end face of at least one end of the screw rod (321).
6. The machine tool clamping fixture of claim 1, wherein: The positioning plate (33) is hinged with the sliding block (31).
7. The machine tool clamping fixture of claim 6, wherein: A containing groove (311) is formed in the sliding block (31) at the hinged end of the positioning plate (33) and the sliding block (31), and the containing groove (311) can contain the positioning plate (33) when the positioning plate (33) rotates.
8. The machine tool clamping fixture of claim 7, wherein: A magnet (4) is arranged in the containing groove (311).
9. The machine tool clamping fixture of claim 6, wherein: A limiting pin (5) is arranged on the positioning plate (33) at the side of the hinged end of the positioning plate (33) and the sliding block (31), and a limiting hole (312) matched with the limiting pin (5) is formed in the sliding block (31).