A rear side sill workpiece clamp

Abstract

The utility model discloses a rear side beam processing piece clamp, it includes: bottom plate and set up in bottom plate and be used for supporting and positioning product's positioning mechanism, still include: clamping mechanism, it sets up in bottom plate and be used for clamping and positioning product, clamping mechanism includes first clamping device, second clamping device and third clamping device, third clamping device includes third support cylinder, third support top head, third press cylinder, third press top head, linear guide rail, linear sliding block and spring plunger, in the utility model, third support top head is slidably installed on linear guide rail through linear sliding block, has promoted the stability of mounting and clamping, in addition, in the utility model, still has added spring plunger below third support top head to carry out the jacking support to third support top head, effectively prevented third support top head accidental displacement under pressure, effectively guaranteed the support effect, and the processing quality has been greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, and specifically to a fixture for machining rear side beam parts. Background Technology

[0002] The core function of a workpiece fixture is to fix the workpiece and ensure its correct position during machining or inspection, while improving machining accuracy and efficiency.

[0003] To ensure the precise position of the workpiece within the fixture and eliminate workpiece uncertainty during machining, a fixture is typically used to quickly position the workpiece using standardized components. This aligns the machining datum with the machine tool spindle center, reducing human error.

[0004] Currently available clamps include, for example, a thin-walled support anti-deformation hydraulic clamp disclosed in Chinese invention patent application CN112122973A, which includes: a base, a support mounted on the base, a positioning plate mounted on one side of the support, a first positioning pin, a second positioning pin, and a hydraulic support cylinder mounted on the positioning plate, a hydraulic angle cylinder mounted on one side of the positioning plate, a first side pressure plate mounted on the hydraulic angle cylinder, a first lever cylinder and a second lever cylinder mounted on the other side of the positioning plate, a second side pressure plate and a third side pressure plate mounted on the first lever cylinder and the second lever cylinder respectively, a flip-able auxiliary pressure plate mounted on the upper end and one side of the first positioning pin, an auxiliary pressure plate having a pressure head end at one end and an abutting pressure rod at the other end, the pressure rod being connected to the cylinder, and a return spring between the auxiliary pressure plate and the positioning plate.

[0005] This existing thin-walled support anti-deformation hydraulic clamp uses a hydraulic cylinder and locating pins to position the product, and then uses a cylinder to drive a pressure plate to clamp it. However, when clamping heavy products, the locating pins are prone to unexpected displacement due to pressure, which cannot guarantee support and affects the processing quality.

[0006] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a fixture for machining rear side beam parts.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a rear side beam processing fixture, comprising: a base plate and a positioning mechanism disposed on the base plate for supporting and positioning the product, and further comprising: a clamping mechanism disposed on the base plate for clamping and positioning the product; the clamping mechanism includes a first clamping device disposed on the base plate for clamping the product, a second clamping device disposed on the base plate for clamping the product, and a third clamping device; the third clamping device includes a third support cylinder disposed on the base plate, a third support head connected to the output end of the third support cylinder and driven upward by the third support cylinder, a third pressing cylinder disposed on the base plate, a third pressing head connected to the output end of the third pressing cylinder and driven downward by the third pressing cylinder to cooperate with the third support head to clamp the product, a linear guide rail disposed on the third pressing cylinder, a linear slider disposed on the third support head and slidably connected to the linear guide rail, and a spring plunger disposed on the base plate for lifting the third support head.

[0009] Furthermore, in the above technical solution, the first clamping device includes a first pressing cylinder disposed on the base plate, a first pressing swing arm swayably connected to the first pressing cylinder, a first support cylinder disposed on the base plate, a first clamping protrusion disposed on the first support cylinder and used to cooperate with the first pressing swing arm to clamp the product, and a first support top head connected to the output end of the first support cylinder and passing through the first clamping protrusion to clamp the product.

[0010] Furthermore, in the above technical solution, one end of the first pressing swing arm is connected to the output end of the first pressing cylinder, and the other end of the first pressing swing arm is provided with a first pressing head corresponding to the first clamping protrusion; a first fixing block corresponding to the first supporting head is fixedly provided on the base plate.

[0011] Furthermore, in the above technical solution, the second clamping device includes a second mounting base disposed on the base plate, a second pressing cylinder horizontally mounted on the side of the second mounting base, a second pressing swing arm swayably disposed on the second pressing cylinder, and a second clamping protrusion disposed on the upper end of the second mounting base and used to cooperate with the second pressing swing arm to clamp the product.

[0012] Furthermore, in the above technical solution, one end of the second clamping swing arm is connected to the output end of the second clamping cylinder, and the other end of the second clamping swing arm is provided with a second pressing head corresponding to the second clamping protrusion.

[0013] Furthermore, in the above technical solution, the third support top is provided with a crescent-shaped tool clearance opening, the third pressing cylinder is vertically provided with a limiting shaft for circumferentially limiting the third support top, and a slot is provided on one side of the third support top to engage with the limiting shaft, so as to prevent the third support top from swinging unexpectedly.

[0014] Furthermore, in the above technical solution, the positioning mechanism includes a first pillar device and a second pillar device disposed on the base plate for supporting and positioning the product, a first oblique positioning device disposed on the base plate for providing lateral support to the product, a first vertical positioning device disposed on the base plate, a first swing positioning device disposed on the base plate for clamping and positioning the product, and a first corner positioning device disposed on the base plate for clamping and positioning the product.

[0015] Furthermore, in the above technical solution, the first inclined positioning device includes a first inclined mounting base mounted on the base plate, a first inclined clamping cylinder disposed on the upper end surface of the first inclined mounting base, a first inclined top head connected to the output end of the first inclined clamping cylinder and driven by the first inclined clamping cylinder to press down, and a first inclined support top head disposed on the upper end surface of the first inclined mounting base and corresponding to the first inclined top head, wherein the upper end surface of the first inclined mounting base is an inclined surface.

[0016] Furthermore, in the above technical solution, the first corner positioning device includes a first corner seat disposed on the base plate, a first corner clamping cylinder disposed on the first corner clamping cylinder, a first corner clamping top head that can be swung on the first corner seat, and a first inclined support top head disposed on the upper end face of the first corner seat and corresponding to the first corner top head.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: This invention changes the traditional method of using hydraulic cylinders to directly support and position the product. The third support head is slidably mounted on a linear guide rail via a linear slider, ensuring consistent movement of the third support head during each clamping operation and improving clamping stability. Furthermore, compared to existing structures, this invention adds a spring plunger below the third support head to lift and support it, effectively preventing accidental displacement due to pressure, ensuring effective support, and significantly improving processing quality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the third clamping device in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the first clamping device in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the second clamping device in this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the first oblique positioning device in this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the first corner positioning device in this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0025] See Figures 1 to 6 As shown, a fixture for machining rear side beams includes: a base plate 1 and a positioning mechanism 2 disposed on the base plate 1 for supporting and positioning the product; it also includes: a clamping mechanism 3 disposed on the base plate 1 for clamping and positioning the product; the clamping mechanism 3 includes a first clamping device 31 disposed on the base plate 1 for clamping the product, a second clamping device 32 disposed on the base plate 1 for clamping the product, and a third clamping device 33; the third clamping device 33 includes a third support cylinder 331 disposed on the base plate 1 and connected to the output end of the third support cylinder 331. The system includes a third support head 332 that is driven upward by a third support cylinder 331, a third pressing cylinder 333 mounted on the base plate 1, a third pressing head 334 connected to the output end of the third pressing cylinder 333 and driven by the third pressing cylinder 333 to press down and cooperate with the third support head 332 to clamp the product, a linear guide rail 335 mounted on the third pressing cylinder 333, a linear slider 336 mounted on the third support head 332 and slidably connected to the linear guide rail 335, and a spring plunger 337 mounted on the base plate 1 for lifting the third support head 332.

[0026] This invention changes the traditional method of using hydraulic cylinders to directly support and position the product. The third support head 332 is slidably mounted on the linear guide rail 335 via a linear slider 336, ensuring that the movement trajectory of the third support head 332 is consistent during each clamping, thus improving clamping stability. Furthermore, compared to existing structures, this invention adds a spring plunger 337 below the third support head 332 to lift and support it, effectively preventing accidental displacement due to pressure, ensuring effective support, and significantly improving processing quality.

[0027] The first clamping device 31 includes a first pressing cylinder 311 disposed on the base plate 1, a first pressing swing arm 312 swayably connected to the first pressing cylinder 311, a first support cylinder 313 disposed on the base plate 1, a first clamping protrusion 314 disposed on the first support cylinder 313 and used to cooperate with the first pressing swing arm 312 to clamp the product, and a first support top 315 connected to the output end of the first support cylinder 313 and passing through the first clamping protrusion 314 to clamp the product. One end of the first pressing swing arm 312 is connected to the output end of the first pressing cylinder 311, and the other end of the first pressing swing arm 312 is provided with a first pressing top 316 corresponding to the first clamping protrusion 314; a first fixing block 318 corresponding to the first support top 315 is fixedly disposed on the base plate 1. Here, the first pressing cylinder 311 drives the first pressing swing arm 312 to swing and press down, so as to cooperate with the first clamping protrusion 314 to clamp and position the product in the vertical direction. At the same time, the first support top 315 and the first fixing block 318 clamp and position the product in the horizontal direction, which effectively improves the clamping effect.

[0028] The second clamping device 32 includes a second mounting base 321 disposed on the base plate 1, a second clamping cylinder 322 horizontally mounted on the side of the second mounting base 321, a second clamping swing arm 323 swayably disposed on the second clamping cylinder 322, and a second clamping protrusion 324 disposed on the upper end of the second mounting base 321 for cooperating with the second clamping swing arm 323 to clamp the product. One end of the second clamping swing arm 323 is connected to the output end of the second clamping cylinder 322, and the other end of the second clamping swing arm 323 is provided with a second downward pressing head 325 corresponding to the second clamping protrusion 324. Here, the second clamping cylinder 322 drives the second clamping swing arm 323 to swing the second downward pressing head 325 to cooperate with the second clamping protrusion 324 to perform lateral clamping and positioning of the product.

[0029] The third support head 332 has a crescent-shaped tool clearance opening 3321. The third pressing cylinder 333 has a vertically arranged limiting shaft 3311 for circumferentially limiting the third support head 332. The third support head 332 has a slot 3322 on one side that can be engaged with the limiting shaft 3311 to prevent the third support head 332 from swinging unexpectedly.

[0030] The positioning mechanism 2 includes a first support device 21 and a second support device 22 mounted on the base plate 1 for supporting and positioning the product; a first oblique positioning device 23 mounted on the base plate 1 for providing lateral support to the product; a first vertical positioning device 24 mounted on the base plate 1; a first swing positioning device 25 mounted on the base plate 1 for clamping and positioning the product; and a first corner positioning device 26 mounted on the base plate 1 for clamping and positioning the product. Here, the positioning mechanism 2 supports the product through the first support device 21 and the second support device 22, and clamps and positions it through the first vertical positioning device 24 and the first swing positioning device 25. This multi-point positioning method effectively ensures the clamping effect and allows for easy clamping of even heavy products.

[0031] The first inclined positioning device 23 includes a first inclined mounting base 231 mounted on the base plate 1, a first inclined clamping cylinder 232 disposed on the upper end surface of the first inclined mounting base 231, a first inclined top 233 connected to the output end of the first inclined clamping cylinder 232 and driven by the first inclined clamping cylinder 232 to press down, and a first inclined support top 234 disposed on the upper end surface of the first inclined mounting base 231 and corresponding to the first inclined top 233. The upper end surface of the first inclined mounting base 231 is inclined. Here, both the first inclined top 233 and the first inclined support top 234 of the first inclined clamping cylinder 232 are inclined, having a certain angle, enabling support and positioning of parts of the product at specific angles, thus providing a better positioning effect.

[0032] The first corner positioning device 26 includes a first corner seat 261 disposed on the base plate 1, a first corner clamping cylinder 265 disposed on the first corner seat 261, a first corner clamping top 262 oscillatingly disposed on the first corner clamping cylinder 265, and a first corner support top 264 disposed on the upper end face of the first corner seat 261 and corresponding to the first corner top 263. Here, the first corner clamping top 262 can rotate under the drive of the first corner clamping cylinder 265, which can be used for clamping and positioning of complex shaped parts of the product, achieving rapid clamping at low temperature to improve processing efficiency.

[0033] In summary, this invention changes the traditional method of using hydraulic cylinders to directly support and position the product. The third support head 332 is slidably mounted on the linear guide rail 335 via a linear slider 336, ensuring that the movement trajectory of the third support head 332 is consistent each time it is clamped, thus improving clamping stability. Furthermore, compared to existing structures, this invention adds a spring plunger 337 below the third support head 332 to lift and support it, effectively preventing accidental displacement of the third support head 332 under pressure, ensuring effective support, and significantly improving processing quality.

[0034] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A fixture for machining rear side beams, comprising a base plate (1) and a positioning mechanism (2) disposed on the base plate (1) for supporting and positioning the product, characterized in that, Also includes: The clamping mechanism (3) is set on the base plate (1) and is used to clamp and position the product; The clamping mechanism (3) includes a first clamping device (31) disposed on the base plate (1) and used for clamping the product, a second clamping device (32) disposed on the base plate (1) and used for clamping the product, and a third clamping device (33). The third clamping device (33) includes a third support cylinder (331) disposed on the base plate (1), a third support head (332) connected to the output end of the third support cylinder (331) and driven upward by the third support cylinder (331), a third pressing cylinder (333) disposed on the base plate (1), a third pressing head (334) connected to the output end of the third pressing cylinder (333) and driven downward by the third pressing cylinder (333) to cooperate with the third support head (332) to clamp the product, a linear guide rail (335) disposed on the third pressing cylinder (333), a linear slider (336) disposed on the third support head (332) and slidably connected to the linear guide rail (335), and a spring plunger (337) disposed on the base plate (1) for lifting the third support head (332).

2. The rear side beam machining fixture according to claim 1, characterized in that: The first clamping device (31) includes a first pressing cylinder (311) disposed on the base plate (1), a first pressing swing arm (312) swayably connected to the first pressing cylinder (311), a first support cylinder (313) disposed on the base plate (1), a first clamping protrusion (314) disposed on the first support cylinder (313) and used to cooperate with the first pressing swing arm (312) to clamp the product, and a first support top head (315) connected to the output end of the first support cylinder (313) and passing through the first clamping protrusion (314) to clamp the product.

3. A fixture for machining rear side beams according to claim 2, characterized in that: One end of the first pressing swing arm (312) is connected to the output end of the first pressing cylinder (311), and the other end of the first pressing swing arm (312) is provided with a first pressing head (316) corresponding to the first clamping protrusion (314); a first fixing block (318) corresponding to the first supporting head (315) is fixedly provided on the base plate (1).

4. A fixture for machining rear side beams according to claim 1, characterized in that: The second clamping device (32) includes a second mounting base (321) disposed on the base plate (1), a second clamping cylinder (322) horizontally mounted on the side of the second mounting base (321), a second clamping swing arm (323) swayably disposed on the second clamping cylinder (322), and a second clamping protrusion (324) disposed on the upper end of the second mounting base (321) and used to cooperate with the second clamping swing arm (323) to clamp the product.

5. A fixture for machining rear side beams according to claim 4, characterized in that: One end of the second clamping swing arm (323) is connected to the output end of the second clamping cylinder (322), and the other end of the second clamping swing arm (323) is provided with a second pressing head (325) corresponding to the second clamping protrusion (324).

6. A fixture for machining rear side beams according to claim 1, characterized in that: The third support head (332) has a crescent-shaped tool clearance opening (3321), and the third pressing cylinder (333) has a vertically arranged limiting shaft (3311) for circumferentially limiting the third support head (332). The third support head (332) has a slot (3322) on one side that can be engaged with the limiting shaft (3311) to prevent the third support head (332) from swinging unexpectedly.

7. A fixture for machining rear side beams according to any one of claims 1-6, characterized in that: The positioning mechanism (2) includes a first support device (21) and a second support device (22) disposed on the base plate (1) for supporting and positioning the product, a first oblique positioning device (23) disposed on the base plate (1) for providing lateral support to the product, a first vertical positioning device (24) disposed on the base plate (1), a first swing positioning device (25) disposed on the base plate (1) for clamping and positioning the product, and a first corner positioning device (26) disposed on the base plate (1) for clamping and positioning the product.

8. A fixture for machining rear side beams according to claim 7, characterized in that: The first inclined positioning device (23) includes a first inclined mounting base (231) mounted on the base plate (1), a first inclined clamping cylinder (232) disposed on the upper end surface of the first inclined mounting base (231), a first inclined top head (233) connected to the output end of the first inclined clamping cylinder (232) and driven by the first inclined clamping cylinder (232) to press down, and a first inclined support top head (234) disposed on the upper end surface of the first inclined mounting base (231) and corresponding to the first inclined top head (233), wherein the upper end surface of the first inclined mounting base (231) is an inclined surface.

9. A fixture for machining rear side beams according to claim 7, characterized in that: The first corner positioning device (26) includes a first corner seat (261) disposed on the base plate (1), a first corner clamping cylinder (265) disposed on the first corner seat (261), a first corner clamping top head (262) swayably disposed on the first corner clamping cylinder (265), and a first corner support top head (264) disposed on the upper end face of the first corner seat (261) and corresponding to the first corner top head (263).

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