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Adjustable fixture

A fixed device, adjustable technology, applied in positioning devices, workpiece holding devices, large fixed members, etc., can solve the problems of expensive, time and labor consuming

Active Publication Date: 2015-04-15
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the time and labor involved in grinding each pin chuck to the exact height can be both time consuming and expensive

Method used

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Examples

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Embodiment Construction

[0018] Representative applications of methods and apparatus according to the present application are described in this section. These examples are provided separately to add context and facilitate understanding of the described embodiments. It will thus be apparent to one skilled in the art that the described embodiments may be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the described embodiments. Other applications are possible, so the following examples should not be considered limiting.

[0019] In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration certain embodiments according to the described embodiments. Although these embodiments are described in sufficient detail to enable those skilled in the art to practice the described embodiments, i...

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PUM

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Abstract

The described embodiments relate to adjustable fixtures. A number of adjustable length cylindrical pins can be utilized to form a conformal support structure in accordance with a workpiece having any number of variations. At least three fixed length pins having heights lower than the adjustable length pins, can be interspersed with the adjustable length cylindrical pins to define an orientation at which the workpiece is held. Because the adjustable length pins have an uncompressed height greater than the fixed length pins, each of the adjustable length pins can be compressed in accordance with a bottom surface of the workpiece when the workpiece is pressed against the fixed length pin. In this way a conformal support structure can be formed that supports the workpiece during a machining operation.

Description

technical field [0001] The described embodiments generally relate to immobilization devices. Specifically, adjustable fixation devices are disclosed. Background technique [0002] It can be difficult to secure the sheet so that at least one side can be machined precisely without any fixtures or deformations introduced by the machining. Current best practice is to double disc grind the board so that the board is as flat as economically reasonable and then machine the board. However, the cost and the final accuracy achieved (flatness) can be improved. For example, flat pin chucks are commonly used in the semiconductor industry to support a silicon wafer while enabling the silicon wafer to be held by vacuum so that the upper surface of the wafer can be processed. Flatness is of utmost concern and the pin tops are ground flat to be flat. Pin collets generally have a rectangular cross-section so that they can be arranged in an array. Unfortunately, the time and labor involve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06B25B11/00
CPCB23Q3/088B23Q1/035B23Q11/10B23Q3/065B23Q2240/002Y10T29/49998
Inventor C·H·小沃纳E·J·吉欧维克A·H·斯洛克姆
Owner APPLE INC