CN204584827U - A kind of built-up jig device - Google Patents

Abstract

The utility model discloses a combination fixture device, which comprises a mounting seat which can be installed on the chuck of a machine tool through fastening screws, a counterbore is provided on the back side and a tapered hole communicates with the counterbore on the front side, and a The plug inserted into the tapered hole and the other end is provided with a chuck with a clamping groove, a pad placed at the bottom of the clamping groove, a locking screw arranged in the counterbore and connected to the plug, The side of the clamping groove is provided with a through-type screw hole and a clamping screw whose front end can resist the workpiece in the clamping groove is installed. Accurate positioning connection is achieved through the butt joint of the tapered hole and the plug, and the collet can be removed by loosening the locking screw, which is convenient for quick disassembly and replacement of the collet that meets the workpiece specifications. The workpiece can be removed and replaced by loosening the clamping screw at the through-type screw hole, which is convenient for quick clamping, positioning and processing of the workpiece, so that the thimble and shaft parts can be precisely positioned, clamped and precision processed.

Description

A combination fixture device

technical field

The utility model relates to a fixture, in particular to a combined fixture device for clamping workpieces for precision machining.

Background technique

At present, the machining of the workpiece is generally to clamp the workpiece directly to the chuck of the machine tool, and there are also clamps to clamp the workpiece to the fixture and then clamp the fixture to the chuck of the machine tool, which is conducive to the rapid loading of the workpiece during batch processing. folder. However, general fixtures are clamped by pliers-like fixtures. The fixture process will inevitably cause excessive clamping of the workpiece and damage the surface of the workpiece. This is unacceptable for the processing of precision parts, especially the cylindrical surface of thimble and shaft parts. The clamping process is prone to local damage due to local force, and even longer parts may be axially bent due to too few clamping positions.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a combination fixture device suitable for precise machining of thimbles and shaft parts individually or in batches.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a combination fixture device, which includes a clamping device that can be installed on the chuck of the machine tool through fastening screws, and has a counterbore on the back side and a tapered hole on the front side. The mounting seat connected to the counterbore, one end has a plug inserted into the tapered hole and the other end is provided with a chuck with a clamping groove, a pad placed at the bottom of the clamping groove, and a pad at the bottom of the sinker. The hole is connected to the locking screw of the plug, and the side of the clamping groove is provided with a through-type screw hole and a clamping screw whose front end can withstand the workpiece in the clamping groove is installed.

As an improvement of the technical solution of the combined clamping device of the present invention, the front end of the clamping screw is provided with a collision head, the front end surface of the collision head is consistent with the side of the clamping groove, and the collision head can rebound to prevent rotation Installed at the innermost end of the screw hole.

As an improvement of the technical solution of the combined clamp device of the present invention, wing grooves are opened on opposite sides of the screw hole, and the side of the contact head is extended to form two anti-rebound rotors that are correspondingly embedded in the wing grooves. .

As an improvement of the technical solution of the combined fixture device of the present invention, the front end of the screw hole is a non-circular hole, and the circumferential surface of the collision head is fitted to prevent rotation from the non-circular hole. The end face is magnetically attached to the clamping screw.

As an improvement of the technical solution of the combined fixture device of the present invention, the clamping groove is a cylindrical groove.

The beneficial effect of the utility model is that: through the butt joint of the tapered hole and the plug, precise positioning and connection are realized, and the collet can be removed by loosening the locking screw, which is convenient for quick disassembly and replacement of the collet that meets the specifications of the workpiece. The workpiece can be removed and replaced by loosening the clamping screw at the through-type screw hole, which is convenient for quick clamping, positioning and processing of the workpiece, so that the thimble and shaft parts can be precisely positioned and clamped and precision processed. Suitable for single piece and batch processing.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a combined clamp device of the present invention.

Fig. 2 is a schematic diagram of the detailed structure of the clamping screw in one embodiment.

Fig. 3 is a schematic diagram of the detailed structure of the clamping screw in another embodiment.

Detailed ways

The specific embodiment of the utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, a combination fixture device of the present invention includes a clamping device that can be installed on the chuck of a machine tool through a fastening screw 7, and a counterbore is provided on the back side and a tapered hole 8 is provided on the front side to communicate with the counterbore. The mounting seat 1 has a plug 10 plugged into the tapered hole 8 at one end and a chuck 2 with a clamping groove 11 at the other end, a spacer 3 placed at the bottom of the clamping groove 11, and a pad 3 located at the bottom of the clamping groove 11. The counterbore 9 is connected to the locking screw 6 of the plug 10, the side of the clamping groove 11 is provided with a through-type screw hole and the clamping screw 5 whose front end can withstand the workpiece 4 in the clamping groove 11 is installed . The sleeve-shaped clamping groove 11 can be clamped to a certain depth so that the clamping of the shaft-shaped parts is more firm and reliable. The spacer 3 can adjust the clamping depth of the workpiece. Accurate positioning and connection are realized by docking the tapered hole 8 and the plug 10 , and the collet 2 can be removed by loosening the locking screw 5 to facilitate quick disassembly and replacement of the collet 2 that meets the specifications of the workpiece. The workpiece 4 can be removed for replacement by loosening the clamping screw 5 at the through-type screw hole, which is convenient for fast clamping, positioning and processing of the workpiece 4 .

Specifically, in machine tool processing, especially turning pin processing, mold core parts and shaft parts need to be precisely positioned and clamped to ensure the position and processing accuracy of the parts. First of all, according to the diameter of the big end of the core part, select the chuck with the same inner diameter, and according to the length of the core part and the length of the protruding end, select the spacer 3 with a suitable thickness; through the tapered hole 8 of the mounting seat 1 and The conical plug 10 at the tail of the chuck 2 cooperates to install the chuck 2 on the mounting seat 1, and fasten it with the locking screw 6; put the spacer 3 into the inner hole of the chuck 2, that is, the clamping groove 11, and then tighten it with The screw 5 locks the workpiece 4 to realize the installation of the workpiece 4; fix it with magnetic attraction or fastening screw 7, and install the whole fixture on the chuck of the machine tool; adjust the position of the fixture to correct the installation position of the mold core parts; after the clamping is completed, Part machining can begin. After one part is processed, the clamping screw is loosened to replace the processed workpiece, and the next workpiece is processed. This enables both single-piece and series production of parts.

Wherein, referring to Fig. 2 at the same time, the front end of the clamping screw 5 is provided with a collision head 13, and the front end surface of the collision head 13 is consistent with the side of the clamping groove 11, and the collision head 13 can be installed in a resiliently anti-rotation manner. At the innermost end of the screw hole, the contact head 13 is used to press the workpiece so that the workpiece 4 is locked in the clamping groove 11. The front surface of the contact head 13 is consistent with the inner surface of the clamping groove 11, so as to keep in contact with the workpiece 4 There are more surfaces to press the workpiece 4 more tightly instead of linear contact, so as to avoid damage to the surface of the workpiece due to partial contact, and is suitable for the field of precision machining of workpieces.

Specifically, as shown in FIG. 2 , wing grooves 12 are opened on opposite sides of the screw hole, and the side of the contact head 13 extends to form two rebound anti-rotation wings 15 correspondingly embedded in the wing grooves 12 . When the clamping screw 5 is unscrewed and retreats, the contact head 13 retreats under the rebound effect of the anti-rotor wing 15, loosening the workpiece, so that the workpiece can be removed for replacement, and the anti-rotor wing 15 is embedded in the wing groove 12 to prevent the contact head from 13 Rotate axially along the threaded hole, so that the front face keeps in the same direction, so as to fit the workpiece.

In addition, as shown in Figure 3, the front end of the screw hole can also be set as a non-circular hole, and the peripheral surface of the contact head 13 is fitted with the non-circular hole to prevent the rotation of the contact head 13 so as to maintain the same The direction is convenient to fit the workpiece and prevent loss of the surface of the workpiece. The rear end surface of the collision head 13 is magnetically adsorbed to the clamping screw 5. When the clamping screw 5 is loosened and retreats, the collision head 13 can be driven back to leave the workpiece, which is convenient. The workpiece is taken out to avoid scratching the surface of the workpiece due to the stop of the collision head. Of course, the contact head 13 and the clamping screw 5 can also be rotatably fastened, the clamping screw 5 can rotate and retreat, and the contact head 13 is pulled back without rotating, so as to ensure that the workpiece is released.

Wherein, the clamping groove 11 is a cylindrical groove, which is suitable for mold cores, thimbles, shaft parts and the like.

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (5)

1. a built-up jig device, it is characterized in that: comprise be installed on lathe chuck by trip bolt and dorsal part is provided with counterbore and front side is provided with mount pad that bellmouth communicates with described counterbore, one end has the plug that is plugged in described bellmouth and the other end offer clamping groove chuck, be positioned over described clamping trench bottom cushion block, be located at described counterbore and be connected the lock-screw of described plug, described clamping groove sidepiece is provided with penetration type screw and is provided with the pinching screw that front end can prop up the workpiece in clamping groove.

2. built-up jig device according to claim 1, is characterized in that: described pinching screw front end is provided with conflict head, and the front end face of conflict head is consistent with the side of clamping groove, and described conflict head resiliently spin-endedly can be installed on screw inner terminal.

3. built-up jig device according to claim 2, is characterized in that: described screw in opposite directions both sides offers wing groove, and described conflict cephalic region extends to form the spin-ended wing of resilience that two correspondences are embedded at described wing groove.

4. built-up jig device according to claim 2, is characterized in that: described screw front end is non-circular hole, the spin-ended installation adaptedly of described conflict head side face and this non-circular hole, and described conflict head rear end face magnetic absorption is in described pinching screw.

5. built-up jig device according to claim 1, is characterized in that: described clamping groove is cylinder groove.