Shape positioning four-axis rotating fine-tuning matching clamp

Abstract

The utility model discloses an appearance positioning four-axis rotation fine-tuning matching clamp, which belongs to the technical field of clamps and comprises a bottom plate mounted on a numerical control milling machine, and two first positioning and clamping components used for positioning and clamping a first part to facilitate machining are mounted on the bottom plate. The bottom plate is provided with a second positioning and clamping assembly used for positioning and clamping the first part so that the first part and the second part can be machined conveniently. The second positioning and clamping assembly is located on the right side of the first positioning and clamping assembly. By means of the mode, under the condition that the bottom face is a blank face and has precision errors, the angle of the machining face of the first part is adjusted through four-axis rotation of the numerical control milling machine, machining precision is guaranteed, and reliable and stable product installation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a shape positioning four-axis rotation fine-tuning matching clamp. Background Art

[0002] During the parts processing, fixtures are needed to position and clamp the parts to ensure their stability during processing.

[0003] Chinese patent CN219380452U discloses a fine-adjustable clamp, including a base, a limit plate and an adjustment device, the limit plate is bolted to the surface of the base, the surface of the limit plate is fixedly connected to a positioning bolt, the surface of the positioning bolt is threadedly connected to a fixing nut, the surface of the positioning bolt is sleeved with a bracket, the bracket is in contact with the surface of the limit plate, the adjustment device is arranged on the surface of the limit plate, the adjustment device includes a guide rail, the guide rail is bolted to the surface of the limit plate, the inner wall of the guide rail is bolted to an assembly plate, and the inner wall of the guide rail is slidably connected to a slider.

[0004] However, when the parts processing accuracy requirements are high, the unprocessed blank surface on the part will cause the processed surface to tilt due to the precision error of the blank surface when it contacts the fixture. If the blank surface is processed, the cost will increase.

[0005] Based on this, the utility model designs a shape positioning four-axis rotation fine-tuning matching fixture to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a shape positioning four-axis rotation fine-tuning matching fixture.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The shape positioning four-axis rotation fine-tuning matching fixture includes a base plate installed on a CNC milling machine, two sets of first positioning and clamping components for positioning and clamping part one for easy processing are installed on the base plate, and a second positioning and clamping component for positioning and clamping part one for easy processing with part two is installed on the base plate; the second positioning and clamping component is located on the right side of the first positioning and clamping component.

[0009] Furthermore, the first positioning clamping assembly includes a first positioning block, an anti-error block, a clamping slide, a first clamping cylinder and a limit block; the upper end of the base plate is fixedly installed with the first positioning block and the anti-error block, the first positioning block and the anti-error block are located on the left and right sides of part one, and the ends of the first positioning block and the anti-error block close to each other are provided with grooves that cooperate with part one, so as to facilitate positioning of part one; the upper end of the base plate is fixedly connected with two groups of first clamping cylinders, and the output end of the first clamping cylinder is fixedly connected with the clamping slide; the upper end of the base plate is fixedly connected with two groups of limit blocks, and the front and rear sides of the clamping slide are slidingly connected with the limit blocks.

[0010] Furthermore, the left side of the clamping slider at the front end is set as an arc surface that fits with the part one, and the left side of the clamping slider at the rear end is set as a flat surface that fits with the part one.

[0011] Furthermore, the second positioning and clamping assembly includes a second clamping cylinder, a second positioning block, a bottom positioning block and a support block; the upper end of the base plate is fixedly connected to two groups of bottom positioning blocks and a group of support blocks, the support block is located on the left side of the second positioning block, and the right side of the support block and the right side of the second positioning block located on the left are respectively fixedly connected to two groups of second clamping cylinders; the left side of the second positioning block is fixedly connected to the bottom positioning block, and the lower end of the bottom positioning block is fixedly connected to the base plate.

[0012] Furthermore, the upper end of the bottom positioning block is configured as a protrusion that fits against the bottom surface of the first component.

[0013] Furthermore, a positioning pin which is plugged into the processed hole is provided on the left side of the second positioning block.

[0014] Furthermore, the accuracy error of the bottom surface is ±0.2 mm.

[0015] Furthermore, the positioning accuracy of the processed hole is within 0.02 mm.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. After the first positioning and clamping assembly has preliminarily processed the part one, the part one is placed on the bottom positioning block and preliminarily positioned by the positioning pin and the processed hole, with the unprocessed bottom surface facing downward so that the part one is fitted with the protrusion on the upper end of the bottom positioning block for positioning, and the milled side of the part one is facing the second positioning block so that the second positioning block can accurately position the side of the part one, while the processed surface is facing upward, and the second clamping oil cylinder is started, and the output end of the second clamping oil cylinder drives the part one to fit with the second positioning block for clamping, and then the bottom plate is driven by the CNC milling machine to perform fine-tuning rotation, and the bottom plate drives the bottom positioning block to rotate, thereby driving the part one to rotate and correct so that the processed surface is flat and not tilted, and the part two is machined to the processed surface, so that when the bottom surface is a blank surface and there is a precision error, the angle of the processed surface of the part one is adjusted by the four-axis rotation of the CNC milling machine to ensure the processing accuracy and ensure reliable and stable product installation;

[0017] 2. When the present invention is used, part one is placed between the first positioning block and the anti-error block, so that the protrusions on both sides of part one cooperate with the grooves of the first positioning block and the anti-error block to perform preliminary positioning of part one, and then the first clamping cylinder is started. The output end of the first clamping cylinder drives the clamping slider to move toward part one under the limit of the limit block. By setting the two sets of clamping sliders to a shape that fits the side of part one, part one is stably clamped, which facilitates milling of the upward side of part one and also facilitates machining holes on part one. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0019] Figure 1 The utility model is a three-dimensional four-axis rotation fine adjustment fixture for the shape positioning Figure 1 ;

[0020] Figure 2 This is a top view of the four-axis rotation fine-tuning fixture for shape positioning of the present invention;

[0021] Figure 3 This is a front view of the four-axis rotation fine-tuning fixture for shape positioning of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of part 1 and part 2 of the four-axis rotation fine-tuning fixture for the shape positioning of the utility model. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the structure of part 1 and part 2 of the four-axis rotation fine-tuning fixture for the shape positioning of the utility model. Figure 2 .

[0024] The numbers in the figure represent:

[0025] 1. Part 1; 11. Processing hole; 12. Processing surface; 13. Bottom surface; 2. Part 2; 3. Bottom plate; 4. First positioning and clamping assembly; 41. First positioning block; 42. Anti-error block; 43. Clamping slide; 44. First clamping cylinder; 45. Limit block; 5. Second positioning and clamping assembly; 51. Second clamping cylinder; 52. Second positioning block; 53. Bottom positioning block; 54. Support block. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] The terms “left,” “right,” “front,” “back,” “up,” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0028] Example 1: In some embodiments, please refer to the accompanying drawings of the specification. Figure 1-Figure 5 The outer shape positioning four-axis rotation fine-tuning matching fixture includes a base plate 3 mounted on a CNC milling machine; two sets of first positioning and clamping components 4 for positioning and clamping part 1 for easy processing are mounted on the base plate 3; a second positioning and clamping component 5 for positioning and clamping part 1 for easy processing with part 2 is mounted on the base plate 3; the second positioning and clamping component 5 is located on the right side of the first positioning and clamping component 4;

[0029] The first positioning clamping assembly 4 includes a first positioning block 41, an anti-error block 42, a pressing slide 43, a first pressing cylinder 44 and a limit block 45; the upper end of the base plate 3 is fixedly installed with a first positioning block 41 and an anti-error block 42, the first positioning block 41 and the anti-error block 42 are located on the left and right sides of part 1, and the ends of the first positioning block 41 and the anti-error block 42 close to each other are provided with grooves that cooperate with part 1, so as to facilitate the positioning of part 1; the upper end of the base plate 3 is fixedly connected with two groups of first pressing cylinders 44, and the output end of the first pressing cylinder 44 is fixedly connected with the pressing slide 43; the upper end of the base plate 3 is fixedly connected with two groups of limit blocks 45, and the front and rear sides of the pressing slide 43 are limitedly slidably connected with the limit blocks 45; the left side of the pressing slide 43 at the front end is set as an arc surface that fits with part 1, and the left side of the pressing slide 43 at the rear end is set as a flat surface that fits with part 1;

[0030] When the present invention is used, part 1 is placed between the first positioning block 41 and the anti-error block 42, so that the protrusions on both sides of part 1 cooperate with the grooves of the first positioning block 41 and the anti-error block 42 to perform preliminary positioning of part 1, and then the first clamping cylinder 44 is started. The output end of the first clamping cylinder 44 drives the clamping slider 43 to move toward part 1 under the limit of the limit block 45. By setting the two groups of clamping sliders 43 to a shape that fits the side of part 1, part 1 is stably clamped, which facilitates milling of the upward side of part 1 and also facilitates machining of the machining hole 11 on part 1.

[0031] The second positioning and clamping assembly 5 includes a second clamping cylinder 51, a second positioning block 52, a bottom positioning block 53 and a support block 54; the upper end of the bottom plate 3 is fixedly connected to two groups of bottom positioning blocks 53 and a group of support blocks 54, the support block 54 is located on the left side of the second positioning block 52, and the right side of the support block 54 and the right side of the second positioning block 52 on the left are respectively fixedly connected to two groups of second clamping cylinders 51; the left side of the second positioning block 52 is fixedly connected to the bottom positioning block 53, the upper end of the bottom positioning block 53 is set to be in contact with the bottom surface 13 of the part 1, so as to facilitate the positioning of the part 1, and the lower end of the bottom positioning block 53 is fixedly connected to the bottom plate 3;

[0032] The left side of the second positioning block 52 is provided with a positioning pin that is plugged into the processing hole 11 to facilitate positioning of the part 1;

[0033] The accuracy error of the bottom surface 13 is ±0.2mm;

[0034] The positioning accuracy of the machining hole 11 is within 0.02 mm;

[0035] After the first positioning and clamping assembly 4 has preliminarily processed part 1, part 1 is placed on the bottom positioning block 53 and preliminarily positioned by the positioning pin and the processed hole 11. The unprocessed bottom surface 13 faces downward so that part 1 is fitted with the upper protrusion of the bottom positioning block 53 for positioning. The milled side of part 1 is facing the second positioning block 52 so that the second positioning block 52 accurately positions the side of part 1. At the same time, the processed surface 12 faces upward, and the second clamping cylinder 51 is started. The output end of the second clamping cylinder 51 drives part 1 to fit with the second positioning block 52 for clamping. Subsequently, the CNC milling machine drives the base plate 3 to fine-tune and rotate. The base plate 3 drives the bottom positioning block 53 to rotate, thereby driving part 1 to rotate and correct so that the processed surface 12 is flat and not tilted. Part 2 is aligned with the processed surface 12 for processing. When the bottom surface 13 is a blank surface with precision error, the angle of the processed surface 12 of part 1 is adjusted by the four-axis rotation of the CNC milling machine to ensure processing accuracy and ensure reliable and stable product installation.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A four-axis rotary fine-tuning fixture for shape positioning, comprising a base plate (3) mounted on a CNC milling machine, characterized in that: Two sets of first positioning and clamping assemblies (4) for positioning and clamping part one (1) for facilitating processing are installed on the base plate (3), and a second positioning and clamping assembly (5) for positioning and clamping part one (1) for facilitating processing with part two (2) is installed on the base plate (3); the second positioning and clamping assembly (5) is located on the right side of the first positioning and clamping assembly (4).

2. The shape positioning four-axis rotation fine-tuning fixture according to claim 1 is characterized in that: The first positioning clamping assembly (4) comprises a first positioning block (41), an anti-error block (42), a pressing slide block (43), a first pressing oil cylinder (44) and a limit block (45); the first positioning block (41) and the anti-error block (42) are fixedly installed on the upper end of the base plate (3), the first positioning block (41) and the anti-error block (42) are located on the left and right sides of the part one (1), and a groove matching the part one (1) is provided at one end of the first positioning block (41) and the anti-error block (42) close to each other, so as to facilitate positioning of the part one (1); the upper end of the base plate (3) is fixedly connected with two groups of first pressing oil cylinders (44), and the output end of the first pressing oil cylinder (44) is fixedly connected with the pressing slide block (43); the upper end of the base plate (3) is fixedly connected with two groups of limit blocks (45), and the front and rear sides of the pressing slide block (43) are limitedly slidably connected with the limit blocks (45).

3. The shape positioning four-axis rotation fine-tuning fixture according to claim 2 is characterized in that: The left side of the pressing slider (43) at the front end is set as an arc surface that fits with the part one (1), and the left side of the pressing slider (43) at the rear end is set as a plane that fits with the part one (1).

4. The shape positioning four-axis rotation fine-tuning fixture according to claim 3 is characterized in that: The second positioning clamping assembly (5) comprises a second pressing oil cylinder (51), a second positioning block (52), a bottom surface positioning block (53) and a support block (54); the upper end of the bottom plate (3) is fixedly connected with two groups of bottom surface positioning blocks (53) and one group of support blocks (54); the support block (54) is located on the left side of the second positioning block (52); the right side of the support block (54) and the right side of the second positioning block (52) located on the left side are respectively fixedly connected with two groups of second pressing oil cylinders (51); the left side of the second positioning block (52) is fixedly connected with the bottom surface positioning block (53), and the lower end of the bottom surface positioning block (53) is fixedly connected to the bottom plate (3).

5. The shape positioning four-axis rotation fine-tuning fixture according to claim 4, characterized in that: The upper end of the bottom surface positioning block (53) is configured as a protrusion that fits the bottom surface (13) of the first component (1).

6. The shape positioning four-axis rotation fine-tuning fixture according to claim 5, characterized in that: A positioning pin plugged into the processing hole (11) is provided on the left side of the second positioning block (52).

7. The shape positioning four-axis rotation fine-tuning fixture according to claim 6, characterized in that: The precision error of the bottom surface (13) is ±0.2 mm.

8. The shape positioning four-axis rotation fine-tuning fixture according to claim 7, characterized in that: The positioning accuracy of the processed hole (11) is within 0.02 mm.

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