Automatic rotation type CNC common tool clamp
By designing an automatic rotary CNC shared tooling fixture, and adopting a common tooling base and replaceable mold core structure, the problem of high processing cost for multiple types of parts in the existing technology is solved, and rapid clamping and low-cost development are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CHENGMAO PRECISION TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-15
AI Technical Summary
Existing CNC tooling fixtures require frequent replacement of hydraulic devices and clamping parts when machining multiple types of parts, resulting in high design and development costs.
An automatic rotary CNC shared tooling fixture was designed, which adopts a common tooling base, a replaceable mold core and a cylinder tie rod mechanism. The movable tie rod is driven by a 90-degree rotating cylinder to achieve quick clamping and fixing. The replaceable mold core can be used to adapt to different parts, reducing the need for structural component replacement.
It enables quick clamping and fixing, reduces the design and development cost of CNC tooling fixtures, and improves ease of use and versatility.
Smart Images
Figure CN224238860U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling fixture technology, and in particular to an automatic rotary CNC shared tooling fixture. Background Technology
[0002] When machining parts using a CNC machining center, CNC tooling fixtures are needed to clamp the parts. For different parts, it is often necessary to design and develop corresponding tooling fixtures. When multiple types of parts are machined by CNC, a large number of CNC tooling fixtures are required, which means that the cost of manufacturing tooling fixtures is high.
[0003] Among them, the Chinese utility model patent with patent number ZL 202223391450.7 and patent name: A four-axis fixture for vertical machining specifically discloses the following technical solution: A four-axis fixture for vertical machining includes a worktable, a fixture assembly, a CNC indexing head, and a tailstock. The worktable is a horizontally arranged rectangular plate structure. The two ends of the worktable are respectively provided with a CNC indexing head and a tailstock. The fixture assembly is arranged between the CNC indexing head and the tailstock. The fixture assembly consists of a fixture base plate, fixture upright plates, hydraulic devices, and clamping parts. The fixture base plate is a horizontally arranged rectangular plate. The upper surface of the fixture base plate is provided with two fixture upright plates that are perpendicular to the fixture base plate and symmetrical to each other. The two fixture upright plates are the same size and shape. Two hydraulic devices are provided between the two fixture upright plates. The part of the hydraulic device above the fixture base plate is provided with a clamping part. Each fixture upright plate is connected to the tailstock and the turntable of the CNC indexing head on the corresponding side.
[0004] It should be noted that the above-mentioned four-axis fixture for vertical machining still has the following defects: In the process of clamping parts, the hydraulic device and the clamping part cooperate to achieve the clamping and fixing of the parts; for different parts, the hydraulic device and the clamping part need to be replaced, which will also increase the design and development cost of CNC tooling fixtures. Utility Model Content
[0005] The purpose of this utility model is to provide an automatic rotary CNC shared tooling fixture to address the shortcomings of existing technologies. This automatic rotary CNC shared tooling fixture has a novel structural design, is easy to use, has strong versatility, and can effectively reduce the design and development costs of CNC tooling fixtures.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution.
[0007] An automatic rotary CNC shared tooling fixture includes a CNC worktable, a CNC indexing head, a tailstock, and a clamping assembly. The CNC indexing head and tailstock are respectively mounted on the CNC worktable, and the CNC indexing head and tailstock are arranged facing each other and spaced apart. The clamping assembly is located between the CNC indexing head and the tailstock.
[0008] The clamping assembly includes a common tooling base, one end of which is connected to the turntable of the CNC indexing head, and the other end of which is rotatably mounted on the tailstock.
[0009] The clamping assembly also includes a replaceable mold core and a cylinder tie rod mechanism. The replaceable mold core is screwed onto the upper surface of the common tooling base by locking screws. The replaceable mold core is equipped with at least two spaced-apart part positioning posts that protrude from the upper surface of the replaceable mold core.
[0010] The cylinder linkage mechanism includes a 90-degree angle cylinder that is screwed and fastened to the lower surface of the common tooling base, a movable linkage connected to the drive end of the 90-degree angle cylinder, and a T-shaped linkage head at the upper end of the movable linkage.
[0011] The common tooling base has a vertical through hole for the movable pull rod, and the replaceable mold core has a vertical through hole for the movable pull rod. The movable pull rod passes through the base through hole and the mold core through hole from bottom to top, and the T-shaped pull rod head of the movable pull rod extends to the upper side of the replaceable mold core.
[0012] The common tooling base has at least two spaced mold core positioning posts on its upper surface. The replaceable mold core has a mold core positioning hole for each mold core positioning post, and each mold core positioning post is inserted into the corresponding mold core positioning hole.
[0013] The common tooling base is equipped with at least two cylinder tie rod mechanisms arranged sequentially from left to right.
[0014] The tailstock has a through hole that extends completely through the left and right directions, corresponding to the common tooling base. The end of the common tooling base facing the tailstock is installed in the through hole of the tailstock through a planar thrust bearing.
[0015] The mounting through hole of the tailstock is fitted with a bearing top block, which is screwed onto the tailstock by adjusting screws, and the bearing top block pushes the planar thrust bearing towards the common tooling base side.
[0016] The lower end of the movable pull rod is screwed to the drive end of the 90-degree rotating cylinder.
[0017] Compared with the prior art, the present invention has the following beneficial effects, specifically:
[0018] 1. This utility model uses a cylinder-rod mechanism consisting of a 90-degree rotating cylinder and a movable connecting rod to achieve quick clamping and fixing of the parts to be processed, which is convenient to use;
[0019] 2. The replaceable mold core is screwed onto the upper surface of the common tooling base with locking screws. For different parts to be processed, the operator only needs to replace the replaceable mold core that is compatible with it, without having to replace other structural parts. This can significantly reduce the design and development cost of CNC tooling.
[0020] 3. Therefore, the automatic rotary CNC common tooling fixture of this utility model has the advantages of novel structural design, convenient use and strong versatility, and can effectively reduce the design and development cost of CNC tooling fixtures. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model.
[0023] Figure 2 This is a structural schematic diagram from another perspective of the present invention.
[0024] Figure 3 This is a cross-sectional schematic diagram of the present invention.
[0025] Figure 4 for Figure 3 A magnified view of a portion of the image.
[0026] exist Figures 1 to 4 This includes:
[0027] 1-CNC worktable; 2-CNC indexing head; 21-Turntable; 3-Tailstock; 31-Mounting through hole; 4-Clamping assembly; 41-Common tooling base; 411-Base through hole; 42-Replaceable mold core; 421-Mold core through hole; 422-Mold core positioning hole; 43-Cylinder tie rod mechanism; 431-90-degree angle cylinder; 432-Modible tie rod; 4321-T-shaped tie rod head; 44-Part positioning post; 5-Flat thrust bearing; 6-Bearing top block. Detailed Implementation
[0028] The present invention will now be described in conjunction with specific embodiments.
[0029] Example 1, as Figures 1 to 3As shown, an automatic rotary CNC shared tooling fixture includes a CNC worktable 1, a CNC indexing head 2, a tailstock 3, and a clamping assembly 4. The CNC indexing head 2 and the tailstock 3 are respectively mounted on the CNC worktable 1, and the CNC indexing head 2 and the tailstock 3 are arranged facing each other and spaced apart. The clamping assembly 4 is located between the CNC indexing head 2 and the tailstock 3.
[0030] Among them, such as Figures 1 to 4 As shown, the clamping assembly 4 includes a common tooling base 41. One end of the common tooling base 41 is connected to the turntable 21 of the CNC indexing head 2, and the other end of the common tooling base 41 is rotatably mounted on the tailstock 3.
[0031] Furthermore, such as Figures 1 to 4 As shown, the clamping assembly 4 also includes a replaceable mold core 42 and a cylinder tie rod mechanism 43. The replaceable mold core 42 is screwed onto the upper surface of the common tooling base 41 by locking screws (not shown in the figure). The replaceable mold core 42 is equipped with at least two spaced-apart part positioning posts 44 that protrude from the upper surface of the replaceable mold core 42.
[0032] Furthermore, such as Figures 1 to 4 As shown, the cylinder lever mechanism 43 includes a 90-degree angle cylinder 431 screwed and fastened to the lower surface of the common tooling base 41, and a movable lever 432 connected to the drive end of the 90-degree angle cylinder 431. The upper end of the movable lever 432 is provided with a T-shaped lever head 4321.
[0033] In addition, such as Figure 3 and Figure 4 As shown, the common tooling base 41 has a vertical through hole 411 corresponding to the movable pull rod 432, and the replaceable mold core 42 has a vertical through hole 421 corresponding to the movable pull rod 432. The movable pull rod 432 passes through the base through hole 411 and the mold core through hole 421 from bottom to top, and the T-shaped pull rod head 4321 of the movable pull rod 432 extends to the upper end of the replaceable mold core 42.
[0034] It should be noted that the automatic rotary CNC shared tooling fixture of this embodiment is for the workpiece 7 with an elongated hole structure. During the clamping process of the workpiece 7 with the elongated hole structure using the clamping assembly 4 of this embodiment, the workpiece 7 is placed on the upper surface of the replaceable mold core 42. The replaceable mold core 42 positions the workpiece 7 using several part positioning pins 44, and the part positioning pins 44 are inserted into the structural hole of the workpiece 7. During this process, the elongated hole structure of the workpiece 7 is aligned with the T-shaped pull rod head 4321 of the movable pull rod 432, and the movable pull rod... The T-shaped pull rod head 4321 of the pull rod 432 passes through the elongated hole of the workpiece 7 to be processed. After the workpiece 7 to be processed is positioned in the replaceable mold core 42, the 90-degree rotation cylinder 431 is activated. During this process, the 90-degree rotation cylinder 431 first drives the movable pull rod 432 to rotate 90 degrees so that the T-shaped pull rod head 4321 of the movable pull rod 432 is misaligned with the elongated hole of the workpiece 7 to be processed. Then, the 90-degree rotation cylinder 431 pulls the movable pull rod 432 downward so that the T-shaped pull rod head 4321 of the movable pull rod 432 presses the workpiece 7 downward to achieve the clamping and fixing of the workpiece 7 to be processed.
[0035] After the part is processed, the 90-degree angle cylinder 431 first drives the movable pull rod 432 to move upward, and causes the T-shaped pull rod head 4321 to retract from the part. Then, the 90-degree angle cylinder 431 drives the movable pull rod 432 to rotate 90 degrees, so that the T-shaped pull rod head 4321 of the movable pull rod 432 is aligned with the long hole of the part. Finally, the part can be removed from the replaceable mold core 42.
[0036] It should be emphasized that the replaceable mold core 42 in this embodiment is screwed onto the upper surface of the common tooling base 41 by locking screws. For different parts 7 to be processed, the operator only needs to replace the replaceable mold core 42 that is compatible with it, without having to replace other structural parts. This can significantly reduce the design and development cost of CNC tooling processing.
[0037] Furthermore, in this embodiment, the common tooling base 41 is rotatably mounted on the CNC indexing head 2 and the tailstock 3. During the CNC machining of the workpiece 7, the CNC indexing head 2 can drive the clamping assembly 4 and the workpiece 7 to rotate 360 degrees, thus meeting the requirements for multi-directional CNC machining of the workpiece 7.
[0038] In summary, the automatic rotary CNC common tooling fixture of this embodiment has the advantages of novel structural design, convenient use, and strong versatility, and can effectively reduce the design and development cost of CNC tooling fixtures.
[0039] Example 2, as Figure 1As shown, the difference between this embodiment 2 and embodiment 1 is that: the upper surface of the common tooling base 41 is provided with at least two spaced mold core positioning posts (not shown in the figure), and the replaceable mold core 42 is provided with mold core positioning holes 422 corresponding to each mold core positioning post, and each mold core positioning post is inserted into the corresponding mold core positioning hole 422.
[0040] When the replaceable mold core 42 is installed on the upper surface of the common tooling base 41, this embodiment 2 uses a mold core positioning post to position the replaceable mold core 42, thereby improving the convenience and accuracy of the installation of the replaceable mold core 42.
[0041] Example 3, as Figures 1 to 3 As shown, the difference between this embodiment three and embodiment one is that the common tooling base 41 is equipped with at least two cylinder rod mechanisms 43 arranged sequentially from left to right.
[0042] For a workpiece 7 with multiple elongated hole structures, this embodiment 3 can use multiple cylinder tie rod mechanisms 43 to clamp multiple positions of the workpiece 7, or select one cylinder tie rod mechanism 43 to clamp according to the position of the elongated hole structure of the workpiece 7.
[0043] Example 4, as Figures 1 to 3 As shown, the difference between this embodiment four and embodiment one is that: the tailstock 3 has a mounting through hole 31 that runs completely through the left and right directions on the common tooling base 41, and the end of the common tooling base 41 facing the tailstock 3 is installed in the mounting through hole 31 of the tailstock 3 through a planar thrust bearing 5.
[0044] The tailstock 3 has a mounting through hole 31 in which a bearing top block 6 is embedded. The bearing top block 6 is screwed onto the tailstock 3 by an adjusting screw (not shown in the figure), and the bearing top block 6 pushes the planar thrust bearing 5 towards the common tooling base 41.
[0045] It should be noted that when using the automatic rotary CNC shared tooling fixture in this embodiment four, the operator can tighten the adjusting screw to make the bearing top block 6 abut against the planar thrust bearing 5 on the side of the CNC indexing head 2, so as to avoid the common tooling base 41 from axial movement during CNC machining, thereby improving the accuracy of CNC machining.
[0046] Example 5, as Figure 4 As shown, the difference between this fifth embodiment and the first embodiment is that the lower end of the movable pull rod 432 is screwed to the drive end of the 90-degree rotating cylinder 431.
[0047] In this embodiment, the movable pull rod 432 is detachably connected to the drive end of the 90-degree rotating cylinder 431. This structural design can meet the usage requirements of adapting the movable pull rod 432 to different parts 7 to be processed.
[0048] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. An automatic rotary CNC shared tooling fixture, comprising a CNC worktable (1), a CNC indexing head (2), a tailstock (3), and a clamping assembly (4), wherein the CNC indexing head (2) and the tailstock (3) are respectively mounted on the CNC worktable (1), and the CNC indexing head (2) and the tailstock (3) are arranged opposite each other and spaced apart, and the clamping assembly (4) is located between the CNC indexing head (2) and the tailstock (3); The clamping assembly (4) includes a common tooling base (41), one end of which is connected to the turntable (21) of the CNC indexing head (2), and the other end of which is rotatably mounted on the tailstock (3). Its features are: The clamping assembly (4) also includes a replaceable mold core (42) and a cylinder tie rod mechanism (43). The replaceable mold core (42) is screwed onto the upper surface of the common tooling base (41) by locking screws. The replaceable mold core (42) is equipped with at least two spaced-apart part positioning posts (44) that protrude from the upper surface of the replaceable mold core (42). The cylinder lever mechanism (43) includes a 90-degree rotating cylinder (431) screwed and fastened to the lower surface of the common tooling base (41), and a movable lever (432) connected to the drive end of the 90-degree rotating cylinder (431). The upper end of the movable lever (432) is provided with a T-shaped lever head (4321). The common tooling base (41) has a vertical through hole (411) corresponding to the movable pull rod (432), and the replaceable mold core (42) has a vertical through hole (421) corresponding to the movable pull rod (432). The movable pull rod (432) passes through the base through hole (411) and the mold core through hole (421) from bottom to top, and the T-shaped pull rod head (4321) of the movable pull rod (432) extends to the upper side of the replaceable mold core (42).
2. The automatic rotary CNC shared tooling fixture according to claim 1, characterized in that: The upper surface of the common tooling base (41) is provided with at least two spaced mold core positioning posts. The replaceable mold core (42) is provided with mold core positioning holes (422) for each mold core positioning post. Each mold core positioning post is inserted into the corresponding mold core positioning hole (422).
3. The automatic rotary CNC shared tooling fixture according to claim 1, characterized in that: The common tooling base (41) is equipped with at least two cylinder tie rod mechanisms (43) arranged sequentially from left to right.
4. The automatic rotary CNC shared tooling fixture according to claim 1, characterized in that: The tailstock (3) has a mounting through hole (31) that runs through the left and right directions, corresponding to the common tooling base (41). The end of the common tooling base (41) facing the tailstock (3) is installed in the mounting through hole (31) of the tailstock (3) through a planar thrust bearing (5). The mounting through hole (31) of the tailstock (3) is fitted with a bearing top block (6). The bearing top block (6) is screwed onto the tailstock (3) by adjusting screws, and the bearing top block (6) pushes the planar thrust bearing (5) towards the common tooling base (41).
5. The automatic rotary CNC shared tooling fixture according to claim 1, characterized in that: The lower end of the movable pull rod (432) is screwed to the drive end of the 90-degree rotating cylinder (431).