CN1099685A

CN1099685A - Cross key rotation adjuster

Info

Publication number: CN1099685A
Application number: CN 93116916
Authority: CN
Inventors: 张健; 徐长祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-31
Filing date: 1993-08-31
Publication date: 1995-03-08

Abstract

The invented apparatus is used for providing fixed angle to the combined clamping apparatus. It contains a 90 deg. angle bed piece and a set of eccentric key pins, on the bed piece there are four through holes to constitute a rectangular coordinate system, said key pin consists of a cylinder and a tetragonal prism. All fixed angles with 15 minutes as increment can be set up just premaking a 90 deg. angle bed piece and a set of eccentric key pins with 19 kinds of angle standards. Said regulating apparatus features simple structure and convenient for manufacturing.

Description

Cross key rotation adjuster

The invention belongs to the jig field, relate to a kind of cross key rotation and adjust structure.

Built-up jig is made up of built-up jig body and the tight part of work piece positioning and tool setting guiding piece two large divisions; Process different workpiece, just need different clamp bodies that the location clamping element and the tool setting guiding piece of different cultivars and specification are installed, and the installation of the generation of built-up jig body and location clamping element and tool setting guiding piece, what lean on all is the location connection key element of built-up jig; Therefore, in theory,, the location of built-up jig can just can assemble the anchor clamps of any angle along parallel mobile adjustment and the rotation adjustment arbitrarily of three axes of coordinates as long as connecting key element.Groove is that the basic fixed position connection key element of built-up jig is the key or the groove of a pair of cross, thereby need implement rotation adjustment to cross key or groove, and various fixed angles are provided.A kind of cross key rotation that CN 88212949U patent provides is adjusted structure and is comprised 6 angle backing plates and 31 kinds of eccentric key pins, select the assembling of different angle backing plates and eccentric key pin for use, just can directly set up with 15 without measure adjusting ground ' be all fixed angles of increment, making groove is that the location of built-up jig connects key element (cross key) and is rotated adjustment.

But in this patent scheme, must possess coordinate hole of two kinds of structural elements-a group (4) cross and the shallow keyway of one group of (2) cross on the angle backing plate simultaneously, thereby have three big shortcomings: first, because of causing an angle on the same angle backing plate, cross recess can not be used as positive and negative two angles simultaneously, thereby adjusting range must be 0 °-90 °, and the angle backing plate has 0 °, 15 °, 30 °, 45 °, 60 ° (30 °) and 75 ° (15 °) 6 kinds; The second, during use, eccentric key pin only forms the protruding key of cross (another side is a cross recess) in the one side of angle backing plate, thereby can not add and subtract mutually between the basic angle that provides of eccentric key pin itself and produce new angle again; The 3rd, hole, two kinds of distinct key elements of manufacturing process of groove are located on the same angle backing plate simultaneously, and also have different angle requirements between hole, groove axes of coordinates, thereby cause manufacture difficulty big.

In view of this, the objective of the invention is to use minimum prefabricated elements, maximum fixed angles is set up in combination, and making groove is the maximum rotation adjustment position of cross key generation of built-up jig.

To achieve the object of the present invention, the present invention proposes a kind of cross key rotation adjuster, and it comprises 90 ° of angle backing plates and the eccentric key pin of a cover; Described 90 ° of angle backing plates are disks, have 4 equal diameters on it and symmetrical uniform hole axis and disc shaft line parallel-formation one rectangular coordinates system, reach the centre bore of 1 axially bored line and disk dead in line; Described eccentric key pin is made up of a cylinder (pin) and a four bank or ridge (key), and the symmetrical centre interplanar distance of the central axis of pin and key is from getting the eccentric key pin that different values just obtains different size; Assign four eccentric key pins that offset is identical in four holes of described 90 ° of angle backing plates, the key of an angle has been adjusted in the also relative installing hole axes of coordinates rotation that just can form cross; The eccentric key pin that four offsets equate respectively respectively is installed on the two sides of described 90 ° of angle backing plates, just can be formed upper and lower two cross key that an angle is arranged, corner dimension depends on the offset and the eccentric installation direction of eccentric key pin.

And best of breed foundation is that the angle specification ordered series of numbers of the needed prefabricated eccentric key pin of all fixed angles of increment is an arithmetic progression with the arbitrary value, comprises female ordered series of numbers of an equal difference and equal difference subnumber row; The first term of the female ordered series of numbers of equal difference is 0 °, and last item is 22.5 °, and the first term of equal difference subnumber row and last item are respectively second from the bottom and last items of the female ordered series of numbers of equal difference; The tolerance of equal difference subnumber row is given, and round again after the tolerance of the female ordered series of numbers of equal difference asks extremum method to try to achieve by mathematics is that the integer degree divides.

And, best of breed sets up with 15 ' be that the angle specification ordered series of numbers of the needed prefabricated eccentric key pin of all fixed angles of increment is an arithmetic progression, this ordered series of numbers comprise the female ordered series of numbers of an equal difference (0 °, 2.5 °, 5 ° ... 20 °, 22.5 °) and equal difference subnumber row (20 °, 20 ° 15 ', 20 ° 30 ' ... 22 ° 15 ', 22 ° 30 '); The first term of the female ordered series of numbers of equal difference is 0 °, and last item is 22.5 °, and the first term of equal difference subnumber row and last item are respectively second from the bottom and last items of the female ordered series of numbers of equal difference; The tolerance (15 ') of equal difference subnumber row is given, and it is that the integer degree divides that the tolerance of the female ordered series of numbers of equal difference asks extremum method to try to achieve the back round by mathematics for 2.5 °.On 90 ° of angle backing plates of the present invention, have only the coordinate hole of one group of (4) cross, and be that four eccentric key pins are assigned on the two sides respectively when using, thereby adjusting range is 0 °～45 °; Two, can assign to add and subtract mutually by the two sides between the basic angle that eccentric key pin provides to produce a lot of new angles again; Three, manufacture difficulty is little.So the present invention has not only reached the purpose of setting up maximum fixed angles with minimum prefabricated elements, but also reduced manufacturing cost.But reaching with minimum prefabricated elements provides the reason of the effect of maximum fixed angle also to be this incessantly, also is the eccentric value series of the eccentric key pin of reasonable selection.And the present invention has provided this rational eccentric value series just.

Below in conjunction with accompanying drawing, describe the present invention.

Fig. 1 is the stereogram of 90 ° of angle backing plates of the present invention.

Fig. 2 is the stereogram of eccentric key pin of the present invention.

Fig. 3 is the front view of eccentric key pin of the present invention.

Fig. 4 is that schematic diagram is adjusted in rotation of the present invention.

Fig. 5 is a cross key rotation adjuster of the present invention.

As shown in Figure 1, the cross key rotation adjuster of the present invention's proposition comprises 90 ° of angle backing plates and the eccentric key pin of a cover.Wherein, 90 ° of angle backing plates are disks, have 4 equal diameters on it and uniform coordinate hole axially bored line and disc shaft line parallel, also have the centre bore of an axially bored line and disk dead in line.As shown in Figures 2 and 3, eccentric key pin of the present invention is that the cylinder (pin) of d and four bank or ridge (key) that width is B are formed by a diameter, the center line of pin can be in the symmetrical centre face of key, the symmetrical centre face that also can depart from key, bias E are got the eccentric key pin that different values promptly obtains different size.The coordinate aperture of 90 ° of angle backing plates is equal in fact with the pin diameter of eccentric key pin.During use, eccentric key pin assigns in the coordinate hole of 90 ° of angle backing plates.As shown in Figure 4, select for use the eccentric key pin of different E values just can obtain the rotation of relational coordinate hole and adjusted different angles (α=arc sin(E/r)) a sunk key; If in four coordinate holes, assign the eccentric key pin of four equal offsets, just formed the key that the cross of angle α has been adjusted in the rotation of relational coordinate hole.As shown in Figure 5, respectively assign four eccentric key pins, form the rotation of relational coordinate hole respectively and adjusted α on the two sides of 90 ° of angle backing plates ₂And α ₁Upper and lower two groove cross key, between promptly upper and lower two groove cross key one angle α=α is arranged ₁+ α ₂Assigned with respect to its corresponding coordinate hole when the same side is eccentric then upper and lower two groove cross key angle α=α when the eccentric up and down key pin among Fig. 5 in addition ₁-α ₂When upper and lower two groove cross key respectively admit one to have the cross recessed composition element, and when using centre bolt to fasten as one, between upper and lower sub-assembly just relatively rotation adjusted an angle α.This structure is a kind of basic structure that complete combination-fixture component system should provide.

Because α=α ₁± α ₂So, have one how to determine α ₁And α ₂The problem of best angle series so that basic angle α ₁And α ₂The specification minimum number of number-eccentric key pin, make the quantity of regeneration angle α maximum.Angle α in the subordinate list 1 ₁Series and angle α ₂Series is implemented the present invention exactly, set up with 15 ' be the preferred plan of all fixed angles of increment.

For setting up, establish N 15 ' (0.25 °) to be for all fixed angles of increment ₁Be the basic angle α that eccentric key pin provided ₁Number, N ₂Be the basic angle α that eccentric key pin provided ₂Number, total number at the basic angle that eccentric key pin provided then:

N ₁₅=N ₁+ N ₂= (22.5°)/(△) + (△)/(0.25°)

Ask the computing of extreme value to get by mathematics: during △=2.37 °, N ₁₅=18.97(minimum of a value); By degree, divide when rounding is real gets △=2.5 ° or 2.25 ° N ₁₅=19.That is to say, best of breed sets up with 15 ' and be that the angle specification ordered series of numbers of the needed prefabricated eccentric key pin of all fixed angles of increment is an arithmetic progression, comprise that is used to provide a basic angle α ₁The female ordered series of numbers of equal difference (0 °, 2.5 °, 5 ° ... 20 °, 22.5 °) and one be used to provide basic angle α ₂Equal difference subnumber row (20 °, 20 ° 15 ', 20 ° 30 ' ... 22 ° 15 ', 22 ° 30 '); The first term of the female ordered series of numbers of equal difference is 0 °, and last item is 22.5 °, and the last item of the first term of equal difference subnumber row is respectively the twoth of the inverse and the item last of the female ordered series of numbers of equal difference; The tolerance (15 ') of equal difference subnumber row is given, and it is that the integer degree divides that the tolerance (2.5 °) of the female ordered series of numbers of equal difference asks extremum method to try to achieve the back round by mathematics.

In like manner can try to achieve foundation with other value for example 10 ' be the preferred plan of all fixed angles of increment.

The preferred plan that provides according to subordinate list 1, set up with 15 ' be the eccentric key pin that all fixed angles of increment only need prefabricated a kind of 90 ° of angle backing plate and 19 kinds of specifications.Compared with prior art, the present invention reaches the effect of setting up maximum fixed angles with minimum prefabricated elements really.

Claims

1, a kind of cross key rotation adjuster comprises 90 ° of angle backing plates and the eccentric key pin of a cover; It is characterized in that described 90 ° of angle backing plates are disks, have 4 equal diameters on it and symmetrical uniform hole axially bored line and disc shaft line parallel--constitute rectangular coordinates system, also have the centre bore of 1 axially bored line and disk dead in line; Described eccentric key pin is made up of a cylinder (pin) and a four bank or ridge (key), the segment distance of being separated by between the symmetrical centre face of the central axis of pin and key; Assign four eccentric key pins that offset is identical in four holes of described 90 ° of angle backing plates, the key of an angle has been adjusted in the also relative installing hole axes of coordinates rotation that just can form cross; The eccentric key pin that four offsets equate respectively respectively is installed on the two sides of described 90 ° of angle backing plates, just can be formed the upper and lower two groove cross key that an angle is arranged.

2, by the described a kind of cross key rotation adjuster of claim 1, it is characterized in that, best of breed foundation is that the angle specification ordered series of numbers of the needed prefabricated eccentric key pin of all fixed angles of increment is an arithmetic progression with the arbitrary value, comprises female ordered series of numbers of an equal difference and equal difference subnumber row; The first term of the female ordered series of numbers of equal difference is 0 °, and last item is 22.5 °, and the first term of equal difference subnumber row and last item are respectively second from the bottom and last items of the female ordered series of numbers of equal difference; The tolerance of equal difference subnumber row is given, and round again after the tolerance of the female ordered series of numbers of equal difference asks extremum method to try to achieve by mathematics is that the integer degree divides.

3, by the described a kind of cross key rotation adjuster of claim 2, it is characterized in that, best of breed sets up with 15 ' be that the angle specification ordered series of numbers of the needed prefabricated eccentric key pin of all fixed angles of increment is an arithmetic progression, this ordered series of numbers comprise the female ordered series of numbers of an equal difference (0 °, 2.5 °, 5 ° ... 20 °, 22.5 °) and equal difference subnumber row (20 °, 20 ° 15 ', 20 ° 30 ' ... 22 ° 15 ', 22 ° 30 '); The first term of the female ordered series of numbers of equal difference is 0 °, and last item is 22.5 °, and the first term of equal difference subnumber row and last item are respectively second from the bottom and last items of the female ordered series of numbers of equal difference; The tolerance (15 ') of equal difference subnumber row is given, and it is that the integer degree divides that the tolerance of the female ordered series of numbers of equal difference asks extremum method to try to achieve the back round by mathematics for 2.5 °.