Clamp for machining two flat squares on stepped shaft

Abstract

The utility model discloses a stepped shaft machining two-flat-square clamp, which relates to the technical field of clamps and comprises a bottom plate component, a positioning plate assembly is fixedly mounted at the front end of the top of the bottom plate component, and a clamping component is arranged at the rear end of the positioning plate assembly. Large outer circle and end face positioning is adopted for positioning of the clamp, limiting positioning of five degrees of freedom is achieved, due to the fact that the clamp is a shaft type rotating piece, one axial rotation degree of freedom is in any direction and does not need to be limited, the product positioning requirement can be met, and the first V-shaped groove and the second V-shaped groove are arranged in a V shape. The requirement for controlling the high symmetry degree can be met under the condition of being matched with the large outer circle tolerance of a product, the clamping force is achieved through clamping of the thin air cylinder and the pressing arm through the pressing sliding block, the clamping force is large, the acting force generated by milling can be effectively overcome, the clamp can machine a plurality of workpieces at a time, the production efficiency is greatly improved, and the production cost is reduced. And a multi-piece milling function is realized on a common numerical control lathe, so that the manufacturing cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a fixture for machining two flat squares on a stepped shaft. Background Technology

[0002] Hardware processing is the process of taking raw materials (such as stainless steel, copper, aluminum, iron, etc.) and using processing equipment (such as lathes, milling machines, drilling machines, punching machines, grinding machines, etc.) to process them into various product parts according to design drawings or samples. A shaft is a cylindrical object that passes through the middle of a bearing, wheel, or gear, although some are square. A shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque, or bending moment. It is generally a round metal rod, and different sections can have different diameters. Rotating parts in a machine are mounted on shafts. A stepped shaft is a type of shaft; when drilling or milling a stepped shaft, it needs to be clamped.

[0003] Current machining fixtures are generally ineffective and require manual clamping and unclamping, with repeated clamping and releasing of individual fixtures, resulting in poor efficiency.

[0004] Therefore, it is necessary to invent a stepped shaft machining two flat square jig to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a step shaft machining two flat square clamps to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stepped shaft machining two flat square clamp, including a base plate assembly, wherein a positioning plate assembly is fixedly installed at the top front end of the base plate assembly, and a clamping assembly is provided at the rear end of the positioning plate assembly;

[0007] The base plate assembly includes a base plate body, and a cylinder mounting seat is fixedly installed on the rear end of the upper surface of the base plate body. A plurality of power components are fixedly installed on the front side of the cylinder mounting seat.

[0008] The positioning plate assembly includes a positioning plate body, and a plurality of first V-shaped grooves distributed at equal intervals are opened through the back of the positioning plate body.

[0009] The clamping assembly includes a slider seat, which is fixedly installed on the top of the base plate body;

[0010] The power assembly includes a thin cylinder, and a push rod is fixedly installed at the output end of the thin cylinder.

[0011] Preferably, the top back of the slider seat has a mounting groove corresponding to each of the multiple power components, and a vertically arranged clamping arm is fixedly installed inside the mounting groove.

[0012] Preferably, the bottom end of the clamping arm is integrally formed with a horizontally arranged cross block, and the bottom end of the slider seat is provided with a plurality of equally spaced sliding grooves.

[0013] Preferably, a pressing slider is provided inside the groove, and a second V-shaped groove adapted to the first V-shaped groove is provided at the front end of the pressing slider.

[0014] Preferably, a second limiting pin is fixedly installed at both ends of the front side of the horizontal block, and the two ends of the front side of the horizontal block are respectively fixedly connected to the rear end of one of the pressing sliders through the second limiting pin.

[0015] Preferably, the top center of the base plate body is provided with a recessed groove corresponding to a plurality of power components, and the recessed groove is located at the bottom of the cross block. The top of the base plate body is fixedly installed with a first limiting pin corresponding to a plurality of first V-shaped grooves.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] The fixture positioning of this utility model adopts large outer circle and end face positioning to achieve five degrees of freedom restricted positioning. Since it is a shaft-type rotating part, the axial rotational degree of freedom is arbitrary and does not need to be restricted, which can meet the product positioning requirements. The first V-groove and the second V-groove are V-shaped, which can meet the requirements of high symmetry control when combined with the large outer circle tolerance of the product. The clamping force is achieved by a thin cylinder and a clamping arm through a clamping slider. The clamping force is large and can effectively overcome the force generated by milling. Moreover, the fixture can process multiple workpieces at one time, which greatly improves production efficiency. It can realize multi-part milling function on ordinary CNC lathes and greatly reduce manufacturing costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall workpiece clamping structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the base plate assembly structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the positioning plate assembly structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the clamping assembly structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the pressing slider structure of this utility model.

[0024] Figure 7 This is a schematic diagram of the slider seat structure of this utility model.

[0025] Figure 8 This is a schematic diagram of the power component structure of this utility model.

[0026] In the diagram: 1. Base plate assembly; 2. Positioning plate assembly; 3. Clamping assembly; 4. Power assembly; 101. Base plate body; 102. Cylinder mounting seat; 103. Sink; 104. First limit pin; 201. Positioning plate body; 202. First V-groove; 301. Slider seat; 302. Sliding groove; 303. Mounting groove; 304. Clamping arm; 305. Cross block; 306. Second limit pin; 307. Clamping slider; 308. Second V-groove; 401. Thin cylinder; 402. Push rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides, for example Figure 1-8 The step shaft machining two flat square jig shown includes a base plate assembly 1. A positioning plate assembly 2 is fixedly installed at the top front end of the base plate assembly 1. A clamping assembly 3 is provided at the rear end of the positioning plate assembly 2. The positioning plate assembly 2 includes a positioning plate body 201. A plurality of first V-shaped grooves 202 distributed at equal intervals are opened through the back of the positioning plate body 201.

[0029] Furthermore, the base plate assembly 1 includes a base plate body 101. A cylinder mounting seat 102 is fixedly installed on the rear end of the upper surface of the base plate body 101, and a plurality of power components 4 are fixedly installed on the front side of the cylinder mounting seat 102. A groove 103 corresponding to the plurality of power components 4 is opened in the middle of the top of the base plate body 101, and the groove 103 is located at the bottom of the horizontal block 305. The groove 103 facilitates the sliding of the horizontal block 305 and prevents the horizontal block 305 from rubbing against the top of the base plate body 101. A first limiting pin 104 corresponding to the plurality of first V-grooves 202 is fixedly installed on the top of the base plate body 101.

[0030] The clamping assembly 3 includes a slider seat 301, which is fixedly installed on the top of the base plate body 101. The top of the back of the slider seat 301 has mounting slots 303 corresponding to multiple power components 4. Vertically arranged clamping arms 304 are fixedly installed inside the mounting slots 303. The clamping arms 304 are fixed to the slider seat 301 by fixing pins. A horizontally arranged cross block 305 is integrally formed at the bottom end of the clamping arms 304. Multiple equally spaced sliding grooves 302 are provided through the bottom end of the slider seat 301. A clamping slider 307 is movably installed inside the sliding grooves 302. A second V-shaped groove 308, adapted to the first V-shaped groove 202, is provided through the front end of the clamping slider 307. Second limiting pins 306 are fixedly installed at both ends of the front of the cross block 305. Furthermore, the two ends of the front side of the horizontal block 305 are respectively fixedly connected to the rear end of one of the clamping sliders 307 through the second limit pin 306. The fixture positioning adopts large outer circle and end face positioning to achieve five degrees of freedom restriction positioning. Since it is a shaft-type rotating part, the axial rotational degree of freedom is arbitrary and does not need to be restricted, which can meet the product positioning requirements. The first V-groove 202 and the second V-groove 308 are V-shaped. With the large outer circle tolerance of the product, it can meet the requirements of high symmetry control. The clamping force is achieved by the thin cylinder 401 and the clamping arm 304 clamping through the clamping slider 307. The clamping force is large and can effectively overcome the force generated by milling. Moreover, the fixture can process multiple workpieces at one time, which greatly improves production efficiency. The realization of multi-part milling function on ordinary CNC lathe greatly reduces manufacturing costs.

[0031] The power assembly 4 includes a thin cylinder 401, and a push rod 402 is fixedly installed at the output end of the thin cylinder 401. Each thin cylinder 401 can push two clamping sliders 307 to clamp two workpieces.

[0032] Working principle of this utility model:

[0033] In use, place multiple workpieces with their large flat surfaces facing down inside the first V-groove 202, ensuring the workpiece surface is at the top of the first limit pin 104. Then, activate the pneumatic switch to cause the thin cylinder 401 to push the clamping arm 304, which in turn moves the horizontal block 305 to the corresponding clamping slider 307 to clamp the workpiece.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture for machining two flat square shafts using a stepped shaft, characterized in that: Includes a base plate assembly (1), a positioning plate assembly (2) is fixedly installed at the top front end of the base plate assembly (1), and a clamping assembly (3) is provided at the rear end of the positioning plate assembly (2). The base plate assembly (1) includes a base plate body (101), and a cylinder mounting seat (102) is fixedly installed on the rear end of the upper surface of the base plate body (101), and multiple power components (4) are fixedly installed on the front side of the cylinder mounting seat (102). The positioning plate assembly (2) includes a positioning plate body (201), and a plurality of first V-shaped grooves (202) are provided through the back of the positioning plate body (201) in an equally spaced manner. The clamping assembly (3) includes a slider seat (301), and the slider seat (301) is fixedly installed on the top of the base plate body (101); The power assembly (4) includes a thin cylinder (401), and a push rod (402) is fixedly installed at the output end of the thin cylinder (401).

2. The step shaft machining two flat square jig according to claim 1, characterized in that: The top back of the slider seat (301) is provided with mounting slots (303) corresponding to multiple power components (4), and a vertically arranged clamping arm (304) is fixedly installed inside the mounting slot (303).

3. A stepped shaft machining two flat square jig according to claim 2, characterized in that: The bottom end of the clamping arm (304) is integrally formed with a horizontally arranged horizontal block (305), and the bottom end of the slider seat (301) is provided with a plurality of equally spaced sliding grooves (302).

4. A stepped shaft machining two flat square jig according to claim 3, characterized in that: The sliding groove (302) is provided with a pressing slider (307) that is movably connected inside. The front end of the pressing slider (307) is provided with a second V-shaped groove (308) that is adapted to the first V-shaped groove (202).

5. A stepped shaft machining two flat square jig according to claim 4, characterized in that: The front ends of the horizontal block (305) are fixedly installed with second limiting pins (306), and the front ends of the horizontal block (305) are respectively fixedly connected to the rear end of one of the pressing sliders (307) through the second limiting pins (306).

6. A stepped shaft machining two flat square jig according to claim 5, characterized in that: The top center of the base plate body (101) is provided with a sinker (103) corresponding to a plurality of power components (4), and the sinker (103) is located at the bottom of the cross block (305). The top of the base plate body (101) is fixedly provided with a first limiting pin (104) corresponding to a plurality of first V-shaped grooves (202).

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