CN218800536U

CN218800536U - Workpiece clamping device for spiral milling

Info

Publication number: CN218800536U
Application number: CN202222668555.6U
Authority: CN
Inventors: 魏志勇; 马飞; 赵翔; 赵培
Original assignee: Hebei Henggong Precision Equipment Co ltd
Current assignee: Hebei Henggong Precision Equipment Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-04-07
Anticipated expiration: 2032-10-11

Abstract

The utility model provides a workpiece clamping device for spiral milling, which comprises a connecting disc connected with a main shaft of a machine tool, a clamping mechanism arranged on the connecting disc for clamping a workpiece, and a top penetrating in the connecting disc for tightly jacking and positioning the end part of the workpiece; the clamping mechanism comprises a chuck fixedly connected to the connecting disc and provided with a plurality of clamping jaws, and a workpiece is clamped between the clamping jaws. Screw mill and use work piece clamping device, through setting up arranging of overall structure that can be convenient for of connection pad, and fixture presss from both sides tight stability that can guarantee the work piece rotation to the work piece, through setting up top tightly pushing up the work piece tip, and then can guarantee the stability of work piece rotation in-process, guarantee that the chuck beats within 0.01mm to can realize quick dress card and save the process, improve production efficiency, also avoid the not enough of needing specific frock among the prior art simultaneously.

Description

Workpiece clamping device for spiral milling

Technical Field

The utility model relates to the technical field of machining, in particular to spiral mills with work piece clamping device.

Background

In some special workpiece machining processes, spiral milling is often required, such as a screw rotor and the like, and a specific clamping mechanism clamps the end of a workpiece in the machining process so as to drive the workpiece to rotate around the axis of the workpiece and ensure the stability of the workpiece in the rotating process. A clamping mechanism in a conventional structure is shown in fig. 1, and mainly includes a hollow clamping table 10, threaded holes 1001 are symmetrically formed on the circumferential surface of the clamping table 10, a part of a boss 11 with a larger diameter is reserved on the outer circumferential surface of an end of a workpiece, a process groove 1101 is machined on the boss 11 (after machining is completed, the boss 11 needs to be turned off), when in use, the boss 11 is inserted into the clamping table 10, and then a bolt is screwed in the threaded hole 1001 to clamp the boss 11. In the above-mentioned process, because boss 11 need process at last to lead to the process comparatively loaded down with trivial details, clamping mechanism can only be applicable to single work piece simultaneously, when the work piece of different specifications need be processed, need unified the unloading of lathe frock, seriously influence production efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a spiral mills with work piece clamping device to avoid needing the not enough of specific frock among the prior art, and have better result of use.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a workpiece clamping device for spiral milling comprises a connecting disc, a clamping mechanism and a tip, wherein the connecting disc is connected with a main shaft of a machine tool, the clamping mechanism is arranged on the connecting disc and used for clamping a workpiece, and the tip penetrates through the connecting disc and is used for tightly jacking and positioning the end part of the workpiece; the clamping mechanism comprises a chuck which is fixedly connected to the connecting disc and provided with a plurality of clamping jaws, and the workpiece is clamped between the clamping jaws.

Furthermore, the connecting disc comprises a first connecting main body capable of being sleeved in the machine tool spindle, a second connecting main body for sleeving the chuck, and a positioning part formed on the first connecting main body, wherein the first connecting main body and the second connecting main body are arranged in a concentric line mode, and a jack for inserting the tip is formed between the first connecting main body and the second connecting main body.

Furthermore, the jack is a tapered hole, and the tip is a taper matched with the jack.

Further, the taper of the insertion hole and the tip is Morse 5.

Further, the clamping jaws are in a step shape.

Furthermore, corresponding to the clamping position of the clamping jaws, a wear-resistant block is detachably and fixedly connected to each clamping jaw.

Furthermore, a clamping block is formed on the wear-resistant block, and a clamping groove for clamping the clamping block is formed on the clamping jaw.

Compared with the prior art, the utility model discloses following advantage has:

(1) Screw mill and use work piece clamping device, through setting up arranging of overall structure that can be convenient for of connection pad, and fixture presss from both sides tight stability that can guarantee the work piece rotation to the work piece, through setting up top tightly pushing up the work piece tip, and then can guarantee the stability of work piece rotation in-process, guarantee that the chuck beats within 0.01mm to can realize quick dress card and save the process, improve production efficiency, also avoid the not enough of needing specific frock among the prior art simultaneously.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a clamping mechanism as described in the background of the invention;

fig. 2 is a workpiece clamping device for a helical mill according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

fig. 4 is a schematic structural diagram of a connection pad according to an embodiment of the present invention;

FIG. 5 is a schematic view of the tip of FIG. 3 with the tip removed;

fig. 6 is a schematic view of the connection between the wear-resistant block and the clamping jaw according to the embodiment of the present invention;

description of reference numerals:

1-connecting disc, 101-first connecting body, 102-second connecting body, 2-tip, 3-chuck, 301-clamping jaw, 4-wear-resistant block, 5-clamping block, 6-clamping groove, 7-second positioning plate, 701-second connecting hole, 8-first positioning plate, 801-first connecting hole, 9-inserting hole, 10-clamping table, 1011-threaded hole, 11-boss and 1101-process groove.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a workpiece clamping device for spiral milling, which comprises a connecting disc 1 connected with a machine tool spindle, a clamping mechanism arranged on the connecting disc 1 to clamp a workpiece, and a tip 2 arranged in the connecting disc 1 in a penetrating manner to tightly push and position the end part of the workpiece, as shown in fig. 2 to 4. This spiral mills with work piece clamping device is convenient for realize clamping mechanism's arrangement on the one hand through setting up connection pad 1, and on the other hand also can be convenient for top 2 arrange, through clamping mechanism and top 2 cooperation in order to guarantee the stability when the work piece is rotatory.

In this embodiment, the clamping mechanism includes a chuck 3 fixedly connected to the connecting disc 1 and having a plurality of jaws 301, the end of the workpiece is clamped between the jaws 301, in this embodiment, the chuck 3 and the jaws 301 are combined by a three-jaw chuck used in a machine tool in an existing structure, and the jaws 301 are of a stepped structure, which is not described herein again. In order to reduce the wear of the jaws 301, in this embodiment, a wear-resistant block 4 is detachably attached to each jaw 301 at a clamping position corresponding to the jaw 301, as shown in fig. 2 and 6. In order to facilitate the connection between the wear-resistant block 4 and the clamping jaw 301, in this embodiment, a clamping groove 6 is formed at the clamping end of the clamping jaw 301, the cross section of the clamping groove 6 may be dovetail-shaped, and a clamping block 5 whose cross section is matched with the clamping groove 6 is formed at the wear-resistant block 4, and the clamping block 5 is inserted into the clamping groove 6 in an interference fit manner when being connected.

As shown in fig. 3 and 4, the connecting plate 1 of the present embodiment includes a first connecting body 101 capable of being fitted into a spindle of a machine tool, a second connecting body 102 for fitting the chuck 3, and a positioning portion formed on the first connecting body 101, wherein the first connecting body 101 and the second connecting body 102 are arranged concentrically. In particular, the first connecting body 101 and the second connecting body 102 are respectively of a cylinder structure with a constant diameter in the present embodiment, and in order to adapt to the structures of the chuck 301 and the spindle of the machine tool, the diameter of the first connecting body 101 in the present embodiment is larger than that of the second connecting body 102. The positioning portion in this embodiment includes a second positioning plate 7 disposed near the second connecting body 102, and a first positioning plate 8 disposed adjacent to the second positioning plate 7 and far from the second connecting body 102. For convenience of connection, in the present embodiment, a plurality of first connection holes 801 are formed in the first positioning plate 8, and a plurality of second connection holes 701 are respectively formed in the second positioning plate 7, wherein the first connection holes 801 are counter bores, bolts pass through the first connection holes 801 and are screwed on the machine tool spindle, so as to connect the connection disc 1 with the machine tool spindle, and the second connection holes 701 are threaded holes, and when connecting, the bolts pass through the chuck 3 and are screwed in the second connection holes 701, so as to connect the chuck 3 with the connection disc 1.

In order to facilitate the arrangement of the center, in this embodiment, a plug hole 9 for inserting the center 2 is formed between the first connecting main body 101 and the second connecting main body 1020, the plug hole 9 is a tapered hole, the center 2 is tapered to match with the plug hole 9, the tapered hole can ensure the accurate positioning of the center 2, and the taper of the plug hole 9 in this embodiment is No. 5 morse. When the workpiece clamping device for the spiral milling is used, a center hole of a workpiece is aligned to the center 3, then the clamping jaws 301 are controlled to tighten up to clamp the workpiece so as to realize synchronous rotation of the workpiece, the chuck and the connecting disc, and the workpiece can be processed after clamping.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a spiral mills with work piece clamping device which characterized in that: the clamping device comprises a connecting disc, a clamping mechanism and a tip, wherein the connecting disc is connected with a main shaft of a machine tool; the clamping mechanism comprises a chuck which is fixedly connected to the connecting disc and provided with a plurality of clamping jaws, and the workpiece is clamped between the clamping jaws.

2. The workpiece holding device for helical milling according to claim 1, wherein: the connecting disc comprises a first connecting main body capable of being sleeved in the machine tool spindle, a second connecting main body for sleeving the chuck, and a positioning part formed on the first connecting main body, wherein the first connecting main body and the second connecting main body are arranged in a concentric line mode, and a jack for inserting the tip is formed between the first connecting main body and the second connecting main body.

3. The workpiece holding device for helical milling according to claim 2, wherein: the jack is a tapered hole, and the tip is a taper matched with the jack.

4. The workpiece holding device for helical milling according to claim 2, wherein: the taper of the insertion hole and the tip is Morse 5.

5. The workpiece holding device for helical milling according to claim 2, wherein: the clamping jaws are in a step shape.

6. The workpiece holding device for helical milling according to claim 2, wherein: and a wear-resistant block is detachably and fixedly connected to each clamping jaw corresponding to the clamping position of the clamping jaw.

7. The workpiece holding device for helical milling according to claim 6, wherein: a clamping block is formed on the wear-resistant block, and a clamping groove for clamping the clamping block is formed on the clamping jaw.