Face milling tool for front extending beam

Abstract

The utility model discloses a face milling tool for a front extending beam, and relates to the technical field of tools. The device comprises a tool plate, pressing clamps are arranged on the left side and the right side of the tool plate, clamping clamps are arranged on the front side and the rear side of the tool plate, the tool plate comprises an outer frame, a groove is formed in the outer frame, a low-density polyethylene block is arranged in the groove, a heating piece is arranged at the bottom of the low-density polyethylene block, and the heating piece is arranged on the outer frame. Through the arrangement of the tool plate, the pressing clamp, the clamping clamp, the low-density polyethylene block, the heating piece, the heat insulation layer and the pressure sensor, the low-density polyethylene block is softened and impressed under the action of the heating piece to generate part outline impressions, an operator can complete positioning through visual alignment, the heat insulation layer isolates heat of the heating piece, and the heat insulation layer is prevented from being damaged. The bottom pressure sensor is protected to work stably, temperature drift errors are avoided, pressure distribution is collected through the matrix type pressure sensor, and installation offset is recognized and screen warning is triggered by comparing preset threshold values.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, specifically to a milling tooling for a cantilever beam. Background Technology

[0002] The front extension beam of a truck is an important component located on both sides of the front of the truck frame. The front extension beam is located on the left and right sides of the front end of the frame, and its rear end is connected to the longitudinal beam of the frame on the same side. It protrudes forward of the longitudinal beam of the frame and can be used to install cooling modules, front crossbeams, front suspension limit brackets, light brackets, traction devices, etc. It can also provide installation positions for peripheral components such as shock absorber brackets and steering brackets, thus improving the integration of the front end of the frame.

[0003] Existing fixtures typically have multiple sets of supports in use. Workpieces are usually placed on these supports and clamped. When engineers use the fixture for the first time, they often don't know how to place the parts correctly to ensure they are in the clamping position, leading to low material loading efficiency. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a milling fixture for a front beam to solve the technical problem that engineers often do not know how to place the parts correctly when using the fixture for the first time, which leads to low material loading efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a milling fixture for a front extension beam, comprising a fixture plate, wherein pressing clamps are provided on the left and right sides of the fixture plate, and clamping clamps are provided on the front and rear sides of the fixture plate, the fixture plate comprising an outer frame, wherein a groove is provided on the outer frame, wherein a low-density polyethylene block is provided inside the groove, and a heating element is provided at the bottom of the low-density polyethylene block.

[0006] By adopting the above technical solution, low-density polyethylene forms positioning marks after softening at 105℃, shortening the operation time for beginners. At the same time, the elastic modulus of LDPE is 0.2-0.5GPa, which can be adapted to parts and reduce tooling customization costs.

[0007] Furthermore, a heat insulation layer is provided at the bottom of the heating element, and a number of pressure sensors are provided at the bottom of the heat insulation layer, and the pressure sensors are arranged in a rectangular array.

[0008] By adopting the above technical solution, the heat insulation layer uses ceramic fiber board to separate the sensor and the heating plate, thus avoiding thermal drift error.

[0009] Furthermore, a base plate is fixedly connected to the bottom of the outer frame, a wire hole is provided on the front side of the outer frame, and a wire outlet groove is provided on the base plate.

[0010] By adopting the above technical solution, the base plate is integrally cast into the outer frame, providing reliable structural rigidity.

[0011] Furthermore, the pressing fixture includes a first bracket, and a workpiece support column is provided on the front side of the first bracket.

[0012] By adopting the above technical solution, the support column shares part of the workpiece weight, extends the life of LDPE, the height of the support column is adjustable, and forms a dual reference system with the imprint, improving the repeatability of positioning accuracy.

[0013] Furthermore, a first cylinder is fixedly connected to the rear side of the first bracket, and the output end of the first cylinder drives the pressure rod to move through a linkage mechanism.

[0014] By adopting the above technical solution, the cylinder combined with the linkage mechanism achieves reliable clamping, converting the cylinder thrust into uniform downward pressure, and ensuring reliable clamping of the workpiece.

[0015] Furthermore, the clamping fixture includes a second cylinder and a pressure applying body, and the pressure applying body is used to apply lateral pressure.

[0016] By adopting the above technical solution, a polyurethane pad is embedded in the moving end of the pressure body to reduce wear caused by repeated clamping. The second cylinder and the first cylinder are synchronously controlled by an external controller to ensure that vertical pressure and lateral pressure are applied synchronously.

[0017] In summary, the present invention has the following main advantages:

[0018] 1. This utility model uses a tooling plate, a pressing fixture, a clamping fixture, a low-density polyethylene block, a heating element, a heat insulation layer, and a pressure sensor. The low-density polyethylene block softens under the action of the heating element, imprinting the outline of the part. The operator can complete the positioning by visual alignment. The heat insulation layer isolates the heat of the heating element, protects the bottom pressure sensor, and prevents temperature drift errors. The matrix pressure sensor collects the pressure distribution and identifies installation misalignment by comparing it with a preset threshold, triggering a screen warning and improving the yield rate.

[0019] 2. This utility model sets up a first bracket, a workpiece support column, a first cylinder and a pressure rod. The workpiece support column serves as a rigid support and is pre-adjusted to a suitable height, enabling it to bear the weight of the workpiece, reducing the compression deformation of the polyethylene block and improving the material's lifespan. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is an exploded three-dimensional structural diagram of the tooling plate of this utility model;

[0022] Figure 3 This is an exploded bottom-view three-dimensional structural diagram of the tooling plate of this utility model;

[0023] Figure 4 This is a bottom view of the pressure sensor structure of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the pressure clamp of this utility model;

[0025] Figure 6 This is a partial cross-sectional view of the clamping fixture of this utility model.

[0026] In the diagram: 1. Tooling plate; 2. Pressing fixture; 3. Clamping fixture; 101. Outer frame; 102. Groove; 103. Low-density polyethylene block; 104. Heating element; 105. Insulation layer; 106. Pressure sensor; 107. Base plate; 108. Wire hole; 109. Wire outlet groove; 201. First bracket; 202. Workpiece support column; 203. First cylinder; 204. Pressure rod; 301. Second cylinder; 302. Pressure body. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Example 1:

[0029] A milling fixture for a cantilever beam, such as Figures 1-6 As shown, the fixture includes a tooling plate 1, with pressing clamps 2 on the left and right sides and clamping clamps 3 on the front and rear sides. The tooling plate 1 includes an outer frame 101, with a groove 102 on the outer frame 101. A low-density polyethylene block 103 is placed inside the groove 102, and a heating element 104 is placed at the bottom of the low-density polyethylene block 103. The heating element 104 is a mica resistance heating element, and a heat insulation layer 105 is also provided between it and the outer frame 101 to reduce heat transfer to the outer frame 101. The heating rate reaches 8℃ / min, ensuring rapid activation of material plasticity. The outer frame 101 is made of cast iron and can reliably provide a base.

[0030] See Figure 3 and Figure 4A heat insulation layer 105 is provided at the bottom of the heating element 104, and several pressure sensors 106 are provided at the bottom of the heat insulation layer 105. The pressure sensors 106 are arranged in a rectangular array. The pressure sensors 106 are piezoresistive thin film sensors. The 4×4 array covers most of the groove area. When the pressure does not match the initial measured pressure, an alarm is triggered to reduce the processing scrap rate.

[0031] See Figure 2 The bottom of the outer frame 101 is fixedly connected to the base plate 107. The front side of the outer frame 101 is provided with a wire hole 108. The base plate 107 is provided with a wire outlet groove 109. The wire hole 108 is embedded with a high-temperature silicone sheath to prevent the circuit from being damaged by the radiant heat of the heating element. The wire outlet groove 109 is a square groove, which allows the sensor cable to pass through smoothly and facilitates subsequent connection to external equipment.

[0032] See Figure 6 The clamping fixture 3 includes a second cylinder 301 and a pressure applying body 302. The pressure applying body 302 is used to apply lateral pressure. A sliding block is provided inside the pressure applying body 302 and is driven by the second cylinder 301. During the retraction, the sliding block is reset by the elastic force, which facilitates the next round of clamping.

[0033] The implementation principle of this utility model is as follows: First, the heating element 104 is activated, and the power line inside the wire hole 108 transmits current to the heating element 104 to generate heat, heating the low-density polyethylene block 103 to 105°C, softening it. The heat insulation layer 105 blocks heat transfer, playing a role in protecting the sensor. The operator places the standard part on the softened polyethylene block 103 and applies a certain pressure, so that the low-density polyethylene block 103 can imprint a bottom mark. The heating element 104 is closed, and the polyethylene block 103 is cooled to below 40°C, forming a permanent imprint that matches the contour of the part. The pressure sensor 106 records the pressure distribution during normal pressing.

[0034] The operator aligns the new part with the imprint and places it into the groove 102. The positioning is quickly achieved with visual guidance. The pressure sensor 106 collects pressure distribution data and transmits it to the computer through the cable outlet 109. When a deviation or lack of pressure is detected, the computer interface will highlight the red indicator as a warning.

[0035] Once it is confirmed that it is correct, the pressure clamp 2 and the clamping clamp 3 are activated to clamp the parts, which will facilitate subsequent milling operations.

[0036] Example 2:

[0037] See Figure 5 The pressing fixture 2 includes a first bracket 201, and a workpiece support column 202 is provided on the front side of the first bracket 201. The support column 202 and the pressing fixture 2 are fixed together to form a whole, which facilitates quick selection and installation.

[0038] See Figure 5 The first cylinder 203 is fixedly connected to the rear side of the first bracket 201. The output end of the first cylinder 203 drives the pressure rod 204 to move through the linkage mechanism. The cylinder action time is less than 0.5 seconds. With the help of an external controller, one-click clamping is achieved, which improves the clamping speed.

[0039] The implementation principle of this utility model is as follows: First, as a replacement for the lower pressure clamp 2, a workpiece support column 202 is provided at the front to provide auxiliary support, thereby dispersing the pressure on the low-density polyethylene block 103 and reducing wear.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A facing mill for a forward reach beam, characterized by: Including tool plate (1), the left and right sides of tool plate (1) are provided with down pressure clamp (2), the front and rear sides of tool plate (1) are provided with clamping clamp (3), tool plate (1) includes outer frame (101), recess (102) is set up on outer frame (101), low density polyethylene block (103) is arranged in recess (102), the bottom of low density polyethylene block (103) is provided with heating sheet (104).

2. The face milling tool for a reach beam according to claim 1, characterized in that: The bottom of heating sheet (104) is provided with heat insulation layer (105), the bottom of heat insulation layer (105) is provided with several pressure sensors (106), and pressure sensor (106) is arranged in rectangular array.

3. The face milling tool for a reach beam according to claim 1, wherein: The bottom of outer frame (101) is fixedly connected with bottom plate (107), the front side of outer frame (101) is provided with wire hole (108), and wire groove (109) is formed in bottom plate (107).

4. The face milling tool for a reach beam according to claim 1, wherein: The down pressure clamp (2) includes a first support (201), and the front side of the first support (201) is provided with a workpiece support column (202).

5. The face milling tool for a reach beam according to claim 4, wherein: The rear side of the first support (201) is fixedly connected with a first air cylinder (203), and the output end of the first air cylinder (203) drives a pressure rod (204) through a connecting rod mechanism.

6. The face milling tool for a reach beam according to claim 1, wherein: The clamping clamp (3) includes a second air cylinder (301) and a pressure applying body (302), and the pressure applying body (302) is used for applying lateral pressure.

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