Milling jig for machining crawler chain link

Abstract

The utility model relates to a milling jig for machining a track chain link, which solves the problem that the relative position precision and tolerance are difficult to guarantee when the chain link is clamped and machined in a conventional mode. Comprising a bottom plate, equal-height cushion blocks, a left clamping block, a right clamping block support and a pressing plate, the left equal-height cushion block of the clamp is fixed to the bottom plate through bolts and key grooves, the left clamping block is fixed to the left equal-height cushion block of the clamp through bolts and key grooves, the right clamping block of the right side is fixed to the bottom plate through bolts and key grooves, and the right clamping block of the right side is a movable end. The position of the part is adjusted by loosening and tightening the bolt on the right clamping block, the appearance of the clamping portion of the left clamping block and the right clamping block is tightly attached to the appearance of the part to be machined, and the pressing plate is fixed to the bottom plate through the bolt and the nut. The clamp is simple in structure, convenient to mount and dismount, safe and reliable, the overall cost of the clamp is saved, the overall quality of parts is guaranteed, the overall machining efficiency is improved, and the machining difficulty of the parts is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a milling machine clamp, concretely relates to a milling machine clamp for processing track link. BACKGROUND

[0002] Nowadays, the track type vehicle is not only limited to military vehicle models such as tanks, and many civilian vehicles also use track type structures. The track can increase the contact area with the ground compared with the wheel type, reduce the pressure on the ground, and make the vehicle work smoothly on soft ground. Not only can it improve the stability and safety of the vehicle, but also can significantly enhance the off-road capability, and has high adaptability to concave, slope and other road surfaces. The track is usually composed of a track plate body, a track pin and connected parts such as links to form a complete track assembly. The quality of the parts in the connecting part (left link / right) of the track is crucial. The two link parts are generally similar and have a symmetrical structure. The two parts are important parts of the track on both sides of the vehicle body. The hole spacing in the parts directly affects the quality of the entire track. The two link parts are forged with irregular shapes, and subsequent machining has high difficulty. The two parts cannot be clamped in the conventional way, and the relative position accuracy and tolerance of the machined part also have high requirements. SUMMARY

[0003] The utility model provides a milling machine clamp for processing track link, solve the problem that the relative position accuracy and tolerance are difficult to guarantee when clamping the link in the conventional way.

[0004] The utility model is realized by the following technical schemes:

[0005] A milling machine clamp for processing track link, including the bottom plate, the equal height cushion block, the left clamping block, the right clamping block, the support and the pressing plate, the equal height cushion block is fixed on the bottom plate through bolt, keyway on the left side of clamp, the left clamping block is fixed on the equal height cushion block through bolt, keyway on the left side of clamp, the right side right clamping block is fixed on the bottom plate through bolt, keyway, and the right side right clamping block is the movable end, and the position of spare part is adjusted through the bolt on the right clamping block, and the appearance of the clamping part of left clamping block and right clamping block is closely combined with the appearance of the spare part to be processed, and the pressing plate is fixed on the bottom plate through bolt nut.

[0006] The support for supporting the pressing plate is screw connected on the bottom plate.

[0007] The screw for transferring the clamp is screw connected on the bottom plate.

[0008] A plurality of large holes for weight reduction and avoiding tool tool path during machining are formed on the bottom plate.

[0009] The upper surface of the left and right sides of the bottom plate is designed with a keyway.

[0010] The utility model discloses a fixture structure is simple, and easy installation, easy dismounting, safe and reliable has solved to the clamping processing of special-shaped part, through the position of adjusting the part of fixture, can realize the processing of another part, has saved the overall cost of fixture, and the cooperation four -axis machine tool can realize the machining of the two end faces of part, the hole on the end face and the hole of the two places above once, need not twice clamping and aligning, has guaranteed the space size and the shape tolerance etc. between the multiple holes, has guaranteed the overall quality of part, has improved the overall processing efficiency, has reduced the processing difficulty of part. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1, Fig. 2 is the structure schematic diagram of the application, in the drawing Figure 1 b It is Figure 1 a A-A section view of a, Figure 2b It is Figure 2a B-B section view of a, Fig. 1 is the machining left chain link, and Fig. 2 is the machining right chain link;

[0012] Figure 3 It is the right chain link position drawing to be processed, wherein, Figure 3 b is Figure 3 a left view, Figure 3 c is Figure 3 a plan view, Figure 3 d is Figure 3 c D-D section view, Figure 3 e is Figure 3 c B-B section view, Figure 3 f is Figure 3 c C-C section view;

[0013] In the drawing, (1) bottom plate, (2) equal high pad, (3) left clamping block, (4) right clamping block, (5) screw M12x35, (6) stud bolt M10x110, (7) nut M10, (8) nut M10, (9) support, (10) bolt M10x85, (11) support M10x45, (12) pressing plate A10, (13) screw M16-25, (14) left chain link, (15) right chain link. DETAILED DESCRIPTION

[0014] As Figures 1 a-3 Indicated, the utility model discloses a kind of milling machine fixtures for processing track chain link, for the machining of left / right chain link in connecting portion of track.

[0015] 1, fixture component composition

[0016] As Figure 1 a , Figure 1 b , Figure 2a , Figure 2bAs shown, the milling machine fixture is composed of a base plate (1), an equal-height spacer block (2), a left clamping block (3), a right clamping block (4), a screw M12x35 (5)

GB / T70.1-2008

GB / T12869-1991

GB / T2148-1991

GB / T6172.1-2016

【GB / T12869-1991],

[0017] a support M10x45 (11)

GB / T2227-1991

GB / T2175-1991

[0018] , a screw M16-25 (13)

GB / T825-1988

[0019] 2. Overall structural features of the fixture

[0020] See Figure 1 a , Figure 1 b , Figure 2a , Figure 2b , the connection between the overall parts of the fixture is bolted, and the positioning between the parts is achieved through key grooves, for example: between the left clamping block (3) and the equal-height spacer block (2), between the equal-height spacer block (2) and the base plate (1), between the right clamping block (4) and the base plate (1), etc. The equal-height spacer block (2) and the left clamping block (3) on the left side of the fixture are fixed on the base plate (1) through bolt key grooves, and the right clamping block (4) on the right side is a movable end, which can be adjusted by loosening the bolt on the right clamping block (4). The outer shape of the left clamping block (3) and the right clamping block (4) closely matches the outer shape of the part to be processed, limiting the movement of the part, and the pressing plate (12) and the bolt and nut are used to fix the part to be processed.

[0021] 3. Structure and function of each part in the fixture

[0022] (1) Base plate: This part is connected directly to the machine tool workbench through the use of bolts, and it also connects other parts in the fixture. The base plate has multiple large holes, some of which are used to reduce weight and others to avoid the tool path during machining. The upper surfaces of the left and right sides are designed with key grooves to facilitate installation and positioning with other parts.

[0023] (2) Equal-height spacer block: This part is responsible for leveling the part to be processed. The height of this part directly affects the quality of the part. The upper and lower surfaces of this part are designed as contact surfaces with a roughness of Ra3.2. The upper surface is designed with a key groove, and the lower surface is positioned and fixed by the key groove of the base plate through a bolt.

[0024] (3) Left clamping block, right clamping block: two parts are designed after fully considering the shape of two kinds of parts to be machined, and the shape is designed to be adaptable to the shape of the two kinds of parts to be machined, which can tightly fit the parts to be machined and limit the front and rear direction and the left and right direction. The right clamping block (4) is a movable part, which can be adjusted left and right by loosening the bolts on the upper part. The upper and lower surfaces of the two parts have bosses, which cooperate with the equal height block (2) and the bottom plate (1) to position, and by turning the two parts upside down 180°, the clamping and machining of the right chain link (15) can be realized.

[0025] The remaining parts: bolts, nuts and the like play the role of connecting and fastening various parts, the use of support (9), double-headed bolt (6) and pressing plate (12) can fix the parts in the up and down direction, ensure that the parts will not move during machining, and the size specification of the support, double-headed bolt and pressing plate is also determined by fully analyzing the shape of the parts to be machined, and then calculating and simulating to avoid interference between the fixture parts and the tool path during machining. Finally, the appropriate size of the parts is determined. The screw (13) is used for convenient transportation, and the fixture is transported to the workbench and then disassembled.

[0026] 4. Method for using the fixture

[0027] See Figure 1 a , Figure 1 b , the fixture is connected to the workbench of the double-spindle machining center (four-axis machine tool) by bolts, first, the screw M16-25 (13), nut M10 (7) and pressing plate A10x60 (12) are disassembled, the left chain link (14) is placed in the fixture according to the drawing, the nut M10 (7) and the pressing plate (12) A10x60 are assembled, the right clamping block (4) and the pressing plate A10x60 (12) are adjusted to the appropriate position, and after all the nuts are tightened and fixed, the left chain link (14) can be machined.

[0028] See Figure 2a , Figure 2b , the left clamping block (3) and the right clamping block (4) in Figure 1 are turned upside down 180°, the supports (9) and (11) are replaced to the corresponding positions according to Figure 2a , Figure 2b , and the machining of the right chain link (15) can be realized by the above operation.

Claims

1. A miller fixture for machining a track link, characterized by: It includes a base plate, an equal-height cushion, a left clamping block, a right clamping block, a support and a pressing plate, the left clamping block is fixed on the base plate through bolts and key grooves, the left clamping block is fixed on the left clamping block through bolts and key grooves, the right clamping block is fixed on the base plate through bolts and key grooves, the right clamping block is a movable end, the position of the part is adjusted by loosening the bolts on the right clamping block, the shapes of the clamping parts of the left clamping block and the right clamping block are closely combined with the shape of the part to be machined, and the pressing plate is fixed on the base plate through bolts and nuts.

2. The miller fixture for processing the track link according to claim 1, characterized in that: A support for supporting the pressing plate is threadedly connected to the base plate.

3. The miller fixture for processing the track link according to claim 1, characterized in that: A screw for transferring the clamp is threadedly connected to the base plate.

4. The miller fixture for processing the track link according to claim 1, characterized in that: A plurality of large holes for reducing weight and avoiding tool paths during machining are formed in the base plate.

5. The miller fixture for processing the track link according to claim 1, characterized in that: Key grooves are designed on the upper surfaces of the left and right sides of the base plate.

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