Design Of Anchor Button Seat Drilling Fixture

Button seat drill fixture is the core tooling to realize and guarantee the above 4 design points. Take 0545640039 /ZJ01 button seat drill fixture as an example. The fixture consists of mounting plate and sliding plate assembly, front clamping seat, rear clamping seat, and drilling template It is composed of main components such as device, indexing device, and longitudinal positioning device. Its main structure and function are as follows.

(1) Mounting plate and sliding plate assembly

The clamping seat slide is accurately guided by the slide guide key, which can drive the front and rear clamping seat (including the workpiece button seat) to move longitudinally relative to the vertical drilling machine and the drilling mold device on the mounting plate to meet the processing of different types of button seat The requirements for the position and size of the axial hole pitch of the spherical tooth hole, and the longitudinal positioning device is used to ensure the accuracy of the hole pitch size and the positioning restoration between processes and steps.

(2) Front and rear clamping seat part

The front and rear clamping seats are the positioning and clamping devices for the workpiece, which are accurately guided by the guide keys of the clamping seat, and can move longitudinally on the slide plate to facilitate the processing of different lengths of button seats. Replaceable Huff positioning rings are designed in the front and rear clamping seats, which can be reliably positioned according to the positioning outer diameters of different ball gear seats to meet the processing requirements of various diameter ball gear seats within a certain size range.

(3) Drill template device

The drilling template device is installed on the mounting plate and is a relatively fixed device. The drill sleeve and the milling positioning sleeve can be quickly replaced to meet the positioning and guidance of different processes and processing steps for different specifications and sizes of button holes. The drill sleeve and the milling positioning sleeve have a long guide length, and the proper selection of the guide positioning matching gap with the drill bit and the boring and milling cutter improves the dimensional accuracy and position accuracy of the hole, and ensures the positioning and restoration between processes and steps to suit mass production. .

(4) Indexing device

Although there is no high requirement for the product pattern of the circular division of the button hole of the workpiece, in order to ensure the process positioning and restoration between the processing procedures and working steps, the fixture is designed with a relatively reliable and simple structure indexing device. The indexing device is designed and manufactured to ensure the coaxiality with the front and rear clamping seats (including the Huff positioning ring), and the V-shaped clamping ring and the V-shaped pressing block and the indexing swivel are designed in it. The clamping device, rotating device and indexing device of the indexing plate that accurately separates 2, 3, and 4 equal parts, can connect the indexing device and the workpiece into one body and accurately index and rotate.

The indexing pin device composed of tapered indexing pin and indexing taper sleeve has high indexing positioning accuracy, and is easy to operate, which effectively ensures the process positioning restoration between processes and steps; the inclined surface adjustment pin is effectively controlled The axial position of the indexing swivel and the axial clearance of the indexing device are improved, and the axial space position of the fixture is shortened as much as possible.

(5) Longitudinal positioning device

As mentioned earlier, the longitudinal positioning device is designed to ensure the dimensional accuracy of the button hole pitch. The positioning device has a large moving range in the longitudinal direction, which can meet the needs of axial positioning for a variety of ball tooth seat processing. When processing different types of ball sockets, the jig should be moved longitudinally according to the size of the button hole pitch, calibrated with the proof rod and realized by adjusting the longitudinal positioning seat and the positioning screw, and move the slide plate more smoothly and longitudinally. When the positioning device is positioned, it can meet the dimensional accuracy requirements of the button hole pitch.

In a word, when the button seat drill fixture is processing different types of button seats, it is only necessary to move a small amount of relevant parts (such as front and rear clamps) according to the product drawings and the technical requirements of the installation and debugging drawings of the various types of button seat drill jigs. The position of the holder, indexing device, etc.), or replace a small amount of related parts (such as drill sleeves, Hough positioning ring, V-shaped clamping ring, etc.), the replacement and debugging of the fixture is convenient and reliable.

In addition, for the positioning and clamping of special models and specifications of the button seat, it is only necessary to appropriately change the positioning and clamping method or add a simple structure, such as 0800000354 /ZJ03— 010 button seat drill fixture (modified on the basis of 0545640039 /ZJ01— 010), The axial length dimension of this type of button seat is special, but it only needs to change the positioning and clamping method appropriately and add V-shaped chuck, V-shaped clamping sleeve and other parts.

The Z5150A vertical drilling machine itself does not have a precise control device for the axial direction (that is, the processing depth). The function of the design depth control device is to precisely control the depth dimension tolerance of the button hole.

The depth control device is composed of dial indicator and its installation device, depth block gauge and block gauge seat, etc. The dial indicator and its installation device are fixed on the spindle sliding sleeve of the Z5150A vertical drilling machine with a mounting ring, which is synchronized with the up and down movement of the spindle. The functional size of the depth block gauge is the same as the basic size of the button hole depth icon. When processing the button hole, when the tool feeds to a specific position, place the depth block gauge under the dial indicator probe and align it to the zero position. After removing the depth block gauge, the spindle cuts the tool and drives the dial gauge to move downward. When the dial gauge probe touches surface C of the block gauge seat and makes the needle point to the zero position, it indicates that the machining depth has reached the basic size. Press the dial indicator to display the scale to control the depth dimension tolerance. The picture shows that the adjusting slot plate is used to adjust the basic position of the dial indicator when processing different models and specifications of the ball tooth seat.