CN2123397U

CN2123397U - Knurling and hobbing machine

Info

Publication number: CN2123397U
Application number: CN 92214472
Authority: CN
Inventors: 高航
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-22
Filing date: 1992-04-22
Publication date: 1992-12-02

Abstract

The utility model relates to a knurling and hobbing machine, which comprises a base, a left and a right cutter frames which are arranged on a connecting piece and are connected with the base through the connecting piece, clamping feed mechanisms which are arranged at the upper part of the right and the left cutter frames, and a left and a right cutter bars which are arranged on a knurling cutter or a hobbing cutter, wherein, the corresponding height positions of the right and the left cutter frames are respectively provided with a cutter frame hole; the left and the right cutter bars are respectively penetrated in the cutter frame holes of the right and the left cutter frames and arranged on the right and the left cutter frames. The utility model can center automatically. When processing, the stress of the two-way side face of the work piece is difficult to generate the deformation, the knurling and the hobbing are not easy to rot, the processing finish is high, and the work efficiency is high.

Description

Knurling and hobbing machine

The utility model provides a kind of and supporting annular knurl, the gear hobbing device of lathe.

Present annular knurl processing all is to carry out on lathe, and work piece one end clamping is on the three-jaw or chuck of lathe, and knurling tool is contained on the knife rest of lathe.Add man-hour, start lathe and make the work piece rotation, follow rest is squeezed on the work piece and from an end of the required annular knurl of work piece knurling tool and goes to the other end.Adopt this kind processing method because of belonging to unidirectional roll extrusion, the unidirectional side of work piece is stressed, easily produces distortion for workpiece rigidity is little as slender axles, thin-wall part, and easy etching, and fineness is poor.

In view of above reason, the purpose of this utility model is in order to provide a kind of simple in structure, not only can annular knurl, improve work piece fineness, etching not, and annular knurl, gear hobbing device that can gear hobbing.

The utility model comprises base, be contained in that connector (3) is gone up and by the base-mounted left knife rest of connector (3), right knife rest, be contained in the clamping feed mechanism of knife rest upper end, the left and right sides, on a left side, be respectively equipped with the knife rest hole on the corresponding height of right knife rest, the left knife bar of knurling tool or hobcutter can be housed, right knife bar is through respectively in the knife rest hole on the knife rest of the left and right sides and is contained on the knife rest of the left and right sides (referring to Fig. 1, Fig. 2), during work, base in the utility model is fixed on lathe (as the lathe) middle carriage, as required, on the knife bar of the left and right sides, load onto knurled wheel (or hobbing machine), rotate to clamp feed mechanism and make the feed motion in opposite directions of two knife rests, lathe drive that work piece rotates and with being contained in that knurling tool on two knife bars or hobcutter roll with respect to work piece the purpose that reaches annular knurl or gear hobbing.

The installation angle α 1 that the axial line in the knife rest hole, the left and right sides on the above-mentioned left and right sides knife rest is become with the complete machine center line respectively, the angle numerical value of α 2 equate, are 5-20 ° (referring to Fig. 2), and the roll extrusion area is reduced, make simultaneously radially roll extrusion power and axially roll extrusion power reduce.

Above-mentioned installation angle α 1, α 2 selects 5-10 ° for use for best.

Above-mentioned left knife rest, right knife rest and connector (3) be for movingly, left and right sides knife rest is freely rotated and reaches the purpose of automatic aligning.

Above-mentioned clamping feed mechanism comprises the pull bar that is contained on the knife rest of the left and right sides, be contained on the pull bar and be positioned at spring between the knife rest of the left and right sides, pull bar stretches into a end in the left knife rest and is connected with left knife rest by connector and stretches out on right knife rest one end handgrip (referring to Fig. 1) that the band eccentric cam is housed prejudicially by connector, adopt eccentric cam, exert oneself little and to produce power big, laborsaving.

Position-limit mechanism (referring to Fig. 1) is housed on above-mentioned knife rest.

Above-mentioned position-limit mechanism can comprise the screw rod that is threaded on the left knife rest, and an end of screw rod stretches to right knife rest and moving rod (referring to Fig. 1) is housed on the other end.

The utility model has adopted can self centering left and right sides knife rest, it is stressed to add the two-way side of work piece in man-hour, workpiece is difficult for producing distortion, not only can annular knurl and can gear hobbing, produce axial force, radial load is little, be particularly suitable for processing the little workpiece of rigidity such as slender axles or thin-wall part, etching, mashed tooth are not processed highly polished.Simple in structure, high efficiency.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1: the utility model structural representation

The A-A cutaway view of Fig. 2: Fig. 1

Can find out that from Fig. 1, Fig. 2 connector is passed through in the left knife rest 1 in the utility model, the lower end of right knife rest 2---screw rod 3 is connected with base 4.Left side knife rest 1, right knife rest 2 and screw rod 3 are movingly.On the corresponding height of left and right sides knife rest, be respectively equipped with knife rest hole 5,6.Left knife bar 7, the right knife bar 8 that can adorn knurled wheel or hobbing machine are contained in respectively in the

knife rest hole

5,6 and also tighten up with holding screw 9,10 respectively.The axial line in knife rest hole, the left and

right sides

5,6 equates with the angle numerical value of the clamping angle α of complete machine center line institute Chengan County 1, α 2 respectively, can be in 5-20 ° of scope the choosing value, be the best with 5-10 ° certainly, in the present embodiment, the angle numerical value of α 1, α 2 is 10 °.

As can be seen from Figure 1, an end of the pull bar 12 in the clamping feed mechanism 11 stretches in right knife rest 2, the left knife rest 1 successively and connects pull bar one end and left knife rest 1 tight with bearing pin 13.Load onto cushion cover 14 successively on the other end that stretches out right knife rest 2 of pull bar 12, spring 15 usefulness bearing pins 16 are loaded onto eccentric cam 17 prejudicially, and handle 18 is threaded on the eccentric cam 17.

Be threaded in screw rod 20 on the left knife rest 1 in the position-limit mechanism 19, its end stretches to right knife rest 2, plays spacing effect by rotating screw bolt, on screw rod 20 other ends moving rod 21 is housed.

When requirement on machining accuracy was high, position-limit mechanism can adopt dial gauge or amesdial.

Claims

1, annular knurl, gear hobbing device, it is characterized in that described device comprises base, (3) are gone up and the left knife rest, the right knife rest that are connected with base by connector (3), are contained in the clamping feed mechanism on the knife rest of the left and right sides to be contained in connector, on the corresponding height of left and right knife rest, be respectively equipped with the knife rest hole, the left knife bar of knurling tool or hobcutter, right knife bar can be housed be through respectively in the knife rest hole on the knife rest of the left and right sides and be contained on the knife rest of the left and right sides.

2, the installation angle α 1 that annular knurl as claimed in claim 1, gear hobbing device, the axial line that it is characterized in that described left knife rest hole, right knife rest hole are become with the complete machine center line respectively, the angle numerical value of α 2 equate, are 5-20 °.

3, annular knurl as claimed in claim 2, gear hobbing device, the angle numerical value that it is characterized in that α 1, α 2 is 5-10 °.

4, annular knurl as claimed in claim 1 or 2, gear hobbing device is characterized in that described left knife rest, right knife rest and connector (3) are for movingly.

5, annular knurl as claimed in claim 1 or 2, gear hobbing device, it is characterized in that described clamping feed mechanism comprises the pull bar that is contained on the knife rest of the left and right sides, is contained on the pull bar and is positioned at spring between the knife rest of the left and right sides, pull bar stretches into a end in the left knife rest and is connected with left knife rest by connector and stretches out the handgrip that the band eccentric cam is housed prejudicially by connector on right knife rest one end.

6, annular knurl as claimed in claim 4, gear hobbing device, it is characterized in that described clamping feed mechanism comprises the pull bar that is contained on the knife rest of the left and right sides, is contained on the pull bar and is positioned at spring between the knife rest of the left and right sides, pull bar stretches into a end in the left knife rest and is connected with left knife rest by connector and stretches out the handgrip that the band eccentric cam is housed prejudicially by connector on right knife rest one end.

7, annular knurl as claimed in claim 1 or 2, gear hobbing device is characterized in that on the described knife rest position-limit mechanism being housed.

8, annular knurl as claimed in claim 7, gear hobbing device is characterized in that described stopping means comprises the screw rod that is threaded on the left knife rest, and an end of screw rod stretches to right knife rest and moving rod is housed on the other end.