CNC machining jig

Abstract

The utility model relates to a CNC machining jig which is characterized in that a clamping and fixing part is mounted on a machining base and used for clamping and fixing a product; the clamping and fixing part comprises a clamp base and a locking part, the clamp base is fixedly installed on the machining base, an isosceles trapezoid movable hole allowing the locking part to move up and down is formed in the clamp base, and the small-opening end of the isosceles trapezoid movable hole faces upwards; the locking part comprises a left component, a right component, a connecting piece and an elastic piece, the left component and the right component are matched with the isosceles trapezoid and spliced into an isosceles trapezoid, and mounting grooves for mounting the elastic piece are formed in the lower ends of the left component and the right component; the connecting piece is used for connecting the left component and the right component, and when the elastic piece elastically deforms, the left component and the right component are allowed to move oppositely or oppositely. Products with different diameters can be clamped through the elastic deformation capacity of the elastic piece, and the machined outer surfaces of the products cannot be shielded due to the fact that no elastic piece is arranged on the portion making contact with the products.

Description

Technical Field

[0001] This application belongs to the field of CNC machining technology, and in particular relates to a CNC machining fixture. Background Art

[0002] In a CNC center, it is necessary to fix the product to be machined to facilitate operations such as cutting, drilling, grinding, and cutting.

[0003] In the machining of watch cases, operations such as engraving patterns or punching positioning holes on their outer and inner surfaces are required. However, due to the thin and small size of watch cases, the machining fixtures used need to be customized additionally. Generally, pads made of materials with elastic deformation ability such as silica gel or rubber that can prevent friction marks and clamping marks are provided on the outer surface of the fixture in contact with the product. However, due to the elastic deformation ability of this structure, when used to clamp the product, part of it will surround the product, resulting in the part of the product surrounded being unable to be machined. Therefore, a new technology is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is: to solve the deficiency in the prior art that part of the clamping component will surround the product, resulting in the part of the product surrounded being unable to be machined, and thus provide a CNC machining fixture.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A CNC machining fixture, comprising:

[0007] A machining base;

[0008] A clamping and fixing part, which is installed on the machining base and is used to clamp and fix the product;

[0009] A driving part, which is used to drive the clamping and fixing part to clamp or release the product;

[0010] The clamping and fixing part includes a fixture base and a locking part. The fixture base is fixedly installed on the machining base. An isosceles trapezoidal moving hole that allows the locking part to move up and down is opened in the fixture base, and the end with a small opening of the isosceles trapezoidal moving hole faces upward; the locking part includes a left member, a right member, a connecting member, and an elastic member. There is a moving space between the left member and the right member, and the left member and the right member match the isosceles trapezoid and are spliced into an isosceles trapezoid. Installation grooves for installing the elastic member are opened inside the lower ends of the left member and the right member; the connecting member is used to connect the left member and the right member, and when the elastic member elastically deforms, it allows the left member and the right member to move towards or away from each other; the driving part is located below the machining base and is used to drive the left member and the right member to move up and down;

[0011] Lower pressing blocks for restricting the product are provided on the outer sides of the upper ends of the left member and the right member.

[0012] Furthermore, the connecting piece includes a plurality of connecting plates and a plurality of connecting grooves. The plurality of connecting grooves are arranged in groups of two and are respectively opened on the opposite sides of the left component and the right component. The two ends of each connecting plate are respectively located in the two corresponding connecting grooves. One end of the connecting plate is provided with a large head to prevent it from falling out of the connecting groove. A large head groove matching the large head is opened inside the connecting groove. The large heads of the connecting plates are staggered in the large head grooves on both sides.

[0013] Furthermore, there are at least two connecting plates, and the connecting grooves are arranged to match the number of connecting plates.

[0014] Furthermore, the elastic member is one of a rubber spring and an air rubber spring.

[0015] Furthermore, a support ring for supporting the product is provided on the fixture base, the axis line of the support ring coincides with the center line of the isosceles trapezoidal movable hole, and the lower pressing block and the support ring cooperate with each other to clamp and fix the product.

[0016] Furthermore, side blocks are provided on both sides of the clamp base to prevent the product from falling off.

[0017] Furthermore, the driving part is a cylinder, and the output end of the cylinder abuts between the bottom surfaces of the left component and the right component.

[0018] The beneficial effects of the utility model are:

[0019] 1. Since an elastic member is arranged between the left member and the right member, the left member and the right member can be connected by the elastic deformation ability of the elastic member, thereby clamping products of different diameters. Moreover, since there is no elastic member in the part in contact with the product, the processed outer surface of the product will not be blocked.

[0020] 2. The elastic part cooperates with the driving part. When the driving part lifts the left and right components, the left and right components are squeezed by the isosceles trapezoidal movable holes, making them close to each other, and they cannot clamp the product. When the driving part descends, the left and right components are propped open by the elastic deformation capacity of the elastic part, and the left and right components are driven down to clamp the product. The structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of a CNC machining fixture structure according to an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of a CNC machining fixture structure according to an embodiment of the present application;

[0024] Figure 3 It is a schematic structural diagram of a CNC machining fixture according to an embodiment of the present application;

[0025] Figure 4 It is a schematic structural diagram of a CNC machining fixture according to an embodiment of the present application;

[0026] The reference numerals in the figure are:

[0027] 10. Machining base, 20. Clamping part, 21. Fixture base, 211. Support ring, 212. Side stop block, 213. Isosceles trapezoidal movable hole, 22. Locking part, 221. Left member, 222. Right member, 223. Connecting member, 2231. Connecting piece, 2232. Connecting groove, 2233. Large head part, 2234. Large head groove, 224. Elastic member, 225. Activity space, 226. Installation groove, 227. Pressing block, 30. Driving part. Detailed implementation manners

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0030] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0031] The technical solutions of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] Embodiment

[0033] This embodiment provides a CNC machining fixture, including a machining base 10, a clamping and fixing part 20, and a driving part 30;

[0034] The clamping and fixing part 20 is installed on the machining base 10 for clamping and fixing the product;

[0035] The driving part 30 is used to drive the clamping and fixing part 20 to clamp or release the product;

[0036] The clamping and fixing part 20 includes a fixture base 21 and a locking part 22. The fixture base 21 is fixedly installed on the machining base 10. An isosceles trapezoidal movable hole 213 allowing the locking part 22 to move up and down is formed in the fixture base 21, and the end with a smaller opening of the isosceles trapezoidal movable hole 213 faces upward; the locking part 22 includes a left member 221, a right member 222, a connecting member 223, and an elastic member 224. There is a movable space 225 between the left member 221 and the right member 222, and the left member 221 and the right member 222 match the isosceles trapezoidal movable hole 213 to form an isosceles trapezoid. Installation grooves 226 for installing the elastic member 224 are formed in the lower ends of the left member 221 and the right member 222, and the transverse length of the installation groove 226 should be greater than the transverse length of the movable space 225;

[0037] The connecting member 223 is used to connect the left member 221 and the right member 222, and allows the left member 221 and the right member 222 to move towards each other or away from each other when the elastic member 224 deforms elastically; the driving part 30 is located below the machining base 10, and the driving part 30 is a cylinder. The output end of the cylinder abuts between the bottom surfaces of the left member 221 and the right member 222 for driving the left member 221 and the right member 222 to move up and down;

[0038] Lower pressing blocks 227 for restricting the product are provided on the outer sides of the upper ends of the left member 221 and the right member 222; the elastic member 224 is one of a rubber spring and an air rubber spring.

[0039] The connecting member 223 includes a plurality of connecting pieces 2231 and a plurality of connecting grooves 2232. The plurality of connecting grooves 2232 are divided into two groups, and are respectively formed on the opposite side surfaces of the left member 221 and the right member 222. Both ends of each connecting piece 2231 are respectively located in the corresponding two connecting grooves 2232. A large head portion 2233 for preventing the connecting piece 2231 from falling off the connecting groove 2232 is provided at one end of the connecting piece 2231. A large head groove 2234 matching the large head portion 2233 is formed in the connecting groove 2232, and the large head portion 2233 of the connecting piece 2231 is staggeredly arranged in the large head grooves 2234 on both sides; at least two connecting pieces 2231 are provided, and the connecting grooves 2232 are arranged according to the number of the connecting pieces 2231.

[0040] On the fixture base 21, there is a support ring 211 for supporting the product. The axis line of the support ring 211 coincides with the center line of the isosceles trapezoid movable hole 213. The lower pressing block 227 cooperates with the support ring 211 to clamp and fix the product. On both sides of the fixture base 21, there are side stop blocks 212 to prevent the product from falling off.

[0041] In the product of the present utility model, multiple groups of clamping and fixing parts 20 and driving parts 30 can be provided, and more products can be clamped and fixed each time, which is convenient for batch processing of products.

[0042] When the product of the present utility model is in use:

[0043] The piston end of the cylinder extends, pushing the left member 221 and the right member 222 from the isosceles trapezoid movable hole 213. At this time, the elastic member 224 is squeezed, the left member 221 and the right member 222 approach each other and drive the lower pressing block 227 away from the support ring 211. At this time, the watch case can be placed on the tops of the members 221 and 222. Then the piston end of the cylinder retracts, no longer squeezing the elastic member 224. Under the action of the elastic force of the elastic member 224, the left member 221 and the right member 222 reset, that is, the left member 221 and the right member 222 drive the lower pressing block 227 to approach the support ring 211, and the lower pressing block 227 cooperates with the support ring 211 to clamp and fix the product.

[0044] Enlightened by the above ideal embodiments based on this application, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this application. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A CNC machining tool, characterized in that: include: Processing base; A clamping and fixing part, which is installed on the processing base and is used to clamp and fix the product; A driving part, the driving part is used to drive the clamping and fixing part to clamp or release the product; The clamping and fixing part comprises a clamp base and a locking part, the clamp base is fixedly mounted on the processing base, an isosceles trapezoidal movable hole allowing the locking part to move up and down is provided in the clamp base, and the end with a smaller opening of the isosceles trapezoidal movable hole faces upward; the locking part comprises a left component, a right component, a connecting component, and an elastic component, a movable space is provided between the left component and the right component, and the left component and the right component match the isosceles trapezoidal movable hole and are spliced ​​into an isosceles trapezoid, and an installation groove for installing the elastic component is provided in the lower ends of the left component and the right component; the connecting component is used to connect the left component and the right component, and when the elastic force of the elastic component is deformed, the left component and the right component are allowed to move toward or away from each other; the driving part is located under the processing base, and is used to drive the left component and the right component to move up and down; The outer side surfaces of the upper ends of the left component and the right component are both provided with downward pressing blocks for limiting the product.

2. A CNC machining tool according to claim 1, characterized in that: The connecting piece includes a plurality of connecting pieces and a plurality of connecting grooves. The plurality of connecting grooves are arranged in two groups of two and are respectively opened on the opposite sides of the left component and the right component. Both ends of each connecting piece are respectively located in two corresponding connecting grooves. One end of the connecting piece is provided with a large head to prevent it from falling out of the connecting groove. A large head groove matching the large head is provided inside the connecting groove. The large heads of the connecting piece are staggered in the large head grooves on both sides.

3. A CNC machining tool according to claim 2, characterized in that: There are at least two connecting pieces, and the connecting grooves are arranged to match the number of connecting pieces.

4. A CNC machining tool according to any one of claims 1 to 3, characterized in that: The elastic member is one of a rubber spring and an air rubber spring.

5. A CNC machining tool according to claim 3, characterized in that: A support ring for supporting the product is provided on the fixture base, the axis line of the support ring coincides with the center line of the isosceles trapezoidal movable hole, and the lower pressing block cooperates with the support ring to clamp and fix the product.

6. A CNC machining jig according to claim 3, characterized in that: Side blocks are provided on both sides of the clamp base to prevent the product from falling off.

7. A CNC machining tool according to claim 3, characterized in that: The driving part is a cylinder, and the output end of the cylinder abuts between the bottom surfaces of the left component and the right component.

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