Finish machining clamp for mechanical parts

Abstract

The utility model relates to the technical field of work fixtures, in particular to a finish machining fixture for mechanical parts. According to the technical scheme, the device comprises a connecting frame, an electromagnetic pushing assembly is arranged in an inner cavity of the connecting frame, the pushing end of the electromagnetic pushing assembly is connected with a positioning assembly, and the positioning assembly is connected with a positioning needle assembly; the electromagnetic pushing assembly comprises an electromagnet, a sleeve is fixedly arranged at the adsorption end of the electromagnet, an inner rod is inserted into the sleeve, the end, away from the sleeve, of the inner rod extends out of the sleeve and is sleeved with a positioning ring, a first spring is fixedly arranged between one side of the positioning ring and the adsorption end of the electromagnet, and the sleeve and the inner rod are sleeved with the first spring. Compared with a mode of adjusting the position by rotating a threaded rod, the electromagnetic pushing device has the advantages of quicker electromagnetic pushing and convenience in operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool fixture technical field, concretely is a kind of mechanical parts finishing fixture. BACKGROUND

[0002] In the machining process of precision mechanical parts, the cutting, polishing, stamping, hole machining and other processes of the parts must strictly meet the design requirements, therefore, a fixture is needed to fix the mechanical parts to ensure that they are in a stable state during machining, avoiding deviation of the parts from the machining position.

[0003] The corresponding process in the production process of the parts uses a corresponding mold, which is divided into an upper mold and a lower mold. When the upper mold and the lower mold are closed, a positioning needle is used for positioning. When the needle head of the positioning needle is machined, the base of the positioning needle is fixed by a fixture, and the needle head is machined by a corresponding machining equipment. The existing fixture fixes the base of the positioning needle by manually rotating a threaded rod. The threaded rod moves relative to the connecting frame connected by threads, thereby driving the positioning block to position the base. When the positioning needle is placed or removed, the threaded rod needs to be rotated correspondingly. Since the threaded rod is connected to the connecting frame by threads, it takes a long time to rotate the threaded rod, which affects the machining efficiency, and rotating the threaded rod further increases the labor. Therefore, a mechanical parts finishing fixture is proposed. SUMMARY

[0004] The utility model aims at providing a kind of mechanical parts finishing fixture to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of mechanical parts finishing fixture, including connecting frame, the inner chamber of the connecting frame is provided with electromagnetic push assembly, the push end of the electromagnetic push assembly is connected with positioning assembly, the positioning assembly is connected with positioning needle assembly;

[0006] The electromagnetic push assembly includes an electromagnet, the adsorption end of the electromagnet is fixedly provided with a sleeve, an inner rod is inserted into the sleeve, one end of the inner rod away from the sleeve extends from the sleeve and is sleeved with a positioning ring, a first spring is fixedly arranged between one side of the positioning ring and the adsorption end of the electromagnet, and the first spring is sleeved on the sleeve and the inner rod.

[0007] The positioning assembly includes a positioning block and a groove, one side of the positioning block is fixedly connected with one end of the inner rod away from the sleeve, a groove is formed in the top of one side of the positioning block, and a vertical plate is movably installed in the groove.

[0008] Preferably, the end of the sleeve connected to the electromagnet covers the adsorption head of the adsorption end of the electromagnet.

[0009] Preferably, a circular hole is provided on the vertical side of the groove, and a cylinder is fixed on one side of the vertical plate relative to the positioning block. One end of the cylinder away from the vertical plate is inserted into the circular hole. A second spring is sleeved on the cylinder. One end of the second spring is fixedly connected to the vertical plate, and the other end of the second spring is fixedly connected to the vertical side of the groove.

[0010] Preferably, the positioning pin assembly consists of a pin and a base. The pin is fixed to the top surface of the base, the base is engaged in the embedding groove opened at the top of the positioning block, and the vertical plate abuts against one side of the base.

[0011] Preferably, a slide bar is fixedly provided at the bottom end of the positioning block, and a track is embedded at the bottom end of the inner cavity of the connecting frame, with the slide bar located in the groove of the track.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting up an electromagnetic drive component, when the electromagnetic drive component is energized, the positioning component moves away from below the processing area of ​​the processing equipment, and the positioning pin component is positioned by the positioning component. Then, when the electromagnetic drive component is de-energized, it pushes the positioning component to move below the processing area of ​​the processing equipment, and the positioning pin component is processed by the processing equipment. Compared with adjusting the position by rotating the threaded rod, the method of this utility model is faster and more convenient to operate.

[0014] 2. By setting a movable vertical plate, the stretched second spring acts on the vertical plate to press against one side of the base, positioning the positioning pin assembly, which can position positioning pin assemblies of different sizes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the connecting frame structure of this utility model;

[0017] Figure 3 This is an exploded structural diagram of the electromagnetic propulsion component and positioning component of this utility model;

[0018] Figure 4 This is a schematic diagram of the positioning pin assembly structure of this utility model.

[0019] In the diagram: 1. Connecting frame; 101. Track; 2. Electromagnetic drive assembly; 201. Electromagnet; 202. Sleeve; 203. First spring; 204. Inner rod; 205. Positioning ring; 3. Positioning assembly; 301. Slide bar; 302. Positioning block; 303. Embedded groove; 304. Second spring; 305. Cylinder; 306. Vertical plate; 307. Groove; 308. Circular hole; 4. Positioning pin assembly; 401. Pin; 402. Base. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0024] A kind of mechanical parts finishing fixture, including connecting frame 1, connecting frame 1 is fixedly arranged on the machining of processing equipment base, the base on processing equipment is moved by the drive mechanism built-in processing equipment, to adjust the position of connecting frame 1.Connecting frame 1 inner cavity is provided with electromagnetic push assembly 2, the push end of electromagnetic push assembly 2 is connected with positioning assembly 3, positioning assembly 3 is connected with positioning needle assembly 4.Electromagnetic push assembly 2 is energized, positioning assembly 3 is away from the machining below processing equipment, positioning needle assembly 4 is positioned by positioning assembly 3, then electromagnetic push assembly 2 is de-energized and pushes positioning assembly 3 to move to the machining below processing equipment, positioning needle assembly 4 is processed by processing equipment, compared with rotating screw rod adjusting position, the mode of the utility model is more fast, convenient operation.

[0025] Specifically, the electromagnetic pushing assembly 2 comprises an electromagnet 201 connected with an external control device and powered by a power supply connected with the external control device. The suction end of the electromagnet 201 is fixedly provided with a sleeve 202, the sleeve 202 is inserted with an inner rod 204, the end of the inner rod 204 away from the sleeve 202 extends out of the sleeve 202 and is sleeved with a positioning ring 205, the first spring 203 is fixedly arranged between one side of the positioning ring 205 and the suction end of the electromagnet 201, the elastic coefficient of the first spring 203 is selected by the person skilled in the art according to the actual situation, and the first spring 203 is sleeved on the sleeve 202 and the inner rod 204. The electromagnet 201 generates magnetism after being powered on, the inner rod 204 is made of magnetic metal, the electromagnet 201 adsorbs the inner rod 204 after being powered on, the inner rod 204 moves along the sleeve 202 to the suction end of the electromagnet 201, at this time, the first spring 203 is compressed, and the positioning assembly 3 connected with the inner rod 204 moves. The positioning needle assembly 4 is clamped on the positioning assembly 3, the electromagnet 201 does not adsorb the inner rod 204 after being powered off, under the action of the elastic force of the first spring 203, the inner rod 204 extends out of the sleeve 202 to drive the positioning assembly 3 to return to the machining position, and the positioning needle assembly 4 is also moved to the machining position for machining. Compared with adjusting the position by rotating the threaded rod, the electromagnetic drive is more efficient and convenient.

[0026] The positioning assembly 3 comprises a positioning block 302 and a groove 307, one side of the positioning block 302 is fixedly connected with the end of the inner rod 204 away from the sleeve 202, the groove 307 is formed in the top of one side of the positioning block 302, and the vertical plate 306 is movably installed in the groove 307. The vertical plate 306 abuts against one side of the base 402 of the positioning needle assembly 4 after being placed, so that the positioning needle assembly 4 is clamped and positioned.

[0027] Further, the end of the sleeve 202 connected with the electromagnet 201 covers the suction head of the suction end of the electromagnet 201. The sleeve 202 plays a guiding role for the inner rod 204, so that the inner rod 204 is accurately sucked by the suction head of the suction end of the electromagnet 201 after being powered on.

[0028] Further, the vertical side of the groove 307 is provided with a round hole 308, and the vertical plate 306 is fixed with a cylinder 305 on one side relative to the positioning block 302, the end of the cylinder 305 away from the vertical plate 306 is inserted into the round hole 308, and the round hole 308 is deep enough that the movable end of the cylinder 305 cannot leave the round hole 308. The cylinder 305 is sleeved with a second spring 304, the elastic coefficient of the second spring 304 is selected by the person skilled in the art according to the actual situation, one end of the second spring 304 is fixedly connected with the vertical plate 306, and the other end of the second spring 304 is fixedly connected with the vertical side of the groove 307. When the base 402 of the positioning needle assembly 4 is clamped, the position of the vertical plate 306 is moved, the second spring 304 is stretched, the base 402 is clamped with the positioning block 302, then the vertical plate 306 is loosened, and under the action of the second spring 304, the vertical plate 306 abuts against one side of the base 402 to position the positioning needle assembly 4. By setting the movable vertical plate 306, positioning needle assemblies 4 of different sizes can be positioned.

[0029] Further, the positioning needle assembly 4 is composed of a needle head 401 and a base 402, the needle head 401 is fixedly arranged at the top end surface of the base 402, the base 402 is clamped in the embedded groove 303 arranged at the top end of the positioning block 302, and the vertical plate 306 abuts against one side of the base 402. The embedded groove 303 positions the long strip side of the base 402, and the inner wall of the connecting frame 1 and the vertical plate 306 position the short strip side of the base 402, so that the base 402 is stably positioned on the positioning block 302.

[0030] It is worth noting that the bottom end of the positioning block 302 is fixedly provided with a sliding bar 301, the inner cavity of the connecting frame 1 is embeddedly arranged with a track 101, and the sliding bar 301 is located in the sliding groove of the track 101. When the positioning block 302 is moved by the electromagnetic pushing assembly 2, the sliding bar 301 moves synchronously on the track 101, and the sliding bar 301 and the track 101 guide the movement of the positioning block 302, facilitating the movement of the positioning block 302.

[0031] Working principle: the electromagnet 201 generates magnetism after being powered on, the electromagnet 201 adsorbs the inner rod 204 after being powered on, the inner rod 204 moves along the sleeve 202 to the adsorption end of the electromagnet 201, at this time the first spring 203 is compressed, and the positioning assembly 3 connected with the inner rod 204 moves. The positioning needle assembly 4 is clamped on the positioning assembly 3, the electromagnet 201 no longer adsorbs the inner rod 204 after being powered off, under the elastic force of the first spring 203, the inner rod 204 extends out of the sleeve 202 to drive the positioning assembly 3 to return to the processing position, and the positioning needle assembly 4 is also moved to the processing position for processing.

[0032] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A precision machining fixture for mechanical parts, comprising a connecting frame (1), characterized in that: The inner cavity of the connecting frame (1) is provided with an electromagnetic push assembly (2), the push end of the electromagnetic push assembly (2) is connected to a positioning assembly (3), and the positioning assembly (3) is connected to a positioning pin assembly (4); The electromagnetic propulsion assembly (2) includes an electromagnet (201), a sleeve (202) is fixedly provided at the adsorption end of the electromagnet (201), an inner rod (204) is inserted into the sleeve (202), one end of the inner rod (204) away from the sleeve (202) extends out from the sleeve (202) and is fitted with a positioning ring (205), a first spring (203) is fixed between one side of the positioning ring (205) and the adsorption end of the electromagnet (201), and the first spring (203) is sleeved on the sleeve (202) and the inner rod (204); The positioning component (3) includes a positioning block (302) and a groove (307). One side of the positioning block (302) is fixedly connected to one end of the inner rod (204) away from the sleeve (202). A groove (307) is provided on the top of one side of the positioning block (302), and a vertical plate (306) is movably installed in the groove (307).

2. The precision machining fixture for mechanical parts according to claim 1, characterized in that: The end of the sleeve (202) connected to the electromagnet (201) covers the adsorption head of the electromagnet (201).

3. The precision machining fixture for mechanical parts according to claim 1, characterized in that: A circular hole (308) is provided on the vertical side of the groove (307). A cylinder (305) is fixed on one side of the vertical plate (306) relative to the positioning block (302). One end of the cylinder (305) away from the vertical plate (306) is inserted into the circular hole (308). A second spring (304) is sleeved on the cylinder (305). One end of the second spring (304) is fixedly connected to the vertical plate (306), and the other end of the second spring (304) is fixedly connected to the vertical side of the groove (307).

4. A precision machining fixture for mechanical parts according to claim 1, characterized in that: The positioning pin assembly (4) consists of a pin (401) and a base (402). The pin (401) is fixed on the top surface of the base (402). The base (402) is engaged in the embedding groove (303) opened at the top of the positioning block (302). The vertical plate (306) abuts against one side of the base (402).

5. A precision machining fixture for mechanical parts according to claim 1, characterized in that: The bottom end of the positioning block (302) is fixed with a slide bar (301), and the bottom end of the inner cavity of the connecting frame (1) is embedded with a track (101), and the slide bar (301) is located in the groove of the track (101).

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