TW201637768A - Positioning assembly and positioning fixture using the same - Google Patents

Abstract

The invention relates to a positioning assembly including an expansion pin and a positioning pin. The expansion pin includes a clamping end and a through hole defined through the clamping end, the positioning pin is slidably received in the through hole. The positioning pin can slide to a first position and press the clamping end to expand, and the positioning pin can slide to a second position to release the expansion of the clamping end. The invention also provides a positioning fixture using the positioning assembly.

Description

Positioning component and positioning fixture applying the positioning component

The invention relates to a positioning assembly, in particular to a positioning assembly for positioning a product.

Today, as electronic products are increasingly becoming lighter and thinner, the dimensional accuracy requirements for their various components are also increasing. In the process of drilling, polishing, welding, etc., the product often needs to be positioned first to fix the product on the carrier. Therefore, positioning plays a crucial role in the processing of the back end of the product, especially for products that require precision machining.

The conventional positioning method is realized by using a positioning hole or a positioning post on the product to cooperate with a positioning post or a positioning hole on the carrier. However, once the gap between the positioning hole and the positioning post is too large, the positioning may be inaccurate; once the gap between the positioning hole and the positioning post is too small, the problem of inconvenient product assembly and removal is caused.

In view of the above problems, it is necessary to provide a positioning component that facilitates positioning of the product.

It is also necessary to provide a positioning fixture to which the positioning assembly is applied.

A positioning assembly includes an expansion pin and a positioning pin, the expansion pin includes a through hole formed in the clamping end and the through clamping end, the positioning pin is removably received in the through hole, and the positioning pin can be Slide to the first position and squeeze the grip end to expand, and the locating pin can slide to the second position to relieve expansion of the grip end.

A positioning fixture includes a positioning assembly including an expansion pin and a positioning pin, the expansion pin including a through hole formed through the clamping end and the through clamping end, the positioning pin can be repeatedly slidably received In the through hole, the positioning pin is slidable to the first position and squeezes the clamping end to expand, and the positioning pin is slidable to the second position to release the expansion of the clamping end.

The positioning assembly of the present invention is applied to a positioning fixture, the positioning assembly includes an expansion pin and a positioning pin, and the expansion pin includes a through hole formed by the clamping end and the through clamping end, and the positioning pin can be repeatedly slidably received In the through hole, the positioning pin can be slid to different positions of the clamping end to realize expansion and de-expansion of the clamping end, so as to achieve the purpose of positioning the product, and the positioning component has high precision.

1 is an exploded view of a positioning assembly applied to a positioning fixture in accordance with a preferred embodiment of the present invention.

2 is an exploded view of the expansion pin and the positioning pin of the positioning fixture of FIG. 1.

3 is an assembled view of the positioning fixture of FIG. 1.

4 is a cross-sectional view of the positioning fixture of FIG. 3 taken along the IV-IV direction, wherein the expansion pin and the positioning pin are in an unsupported state.

Figure 5 is a cross-sectional view showing another state of the positioning jig of Figure 4, wherein the expansion pin and the positioning pin are in abutting state.

Referring to FIG. 1, the positioning assembly 50 of the present invention is applied to a positioning fixture 100 for precise positioning of a product (not shown) for subsequent processing. The positioning fixture 100 includes a support assembly 10, a carrier 30, and at least one positioning assembly 50. The carrier 30 is detachably mounted on one side of the support assembly 10, and the positioning assembly 50 is disposed on the other side of the support assembly 10, and the positioning assembly 50 partially passes through the support assembly 10 and the carrier 30 in sequence.

The support assembly 10 is configured to carry the carrier 30 and fix the at least one positioning assembly 50. The support assembly 10 includes a bottom plate 11, a plurality of support rods 12, and a support plate 13. In the preferred embodiment of the present invention, one end of the plurality of support rods 12 is connected to the bottom plate 11 and the other end is connected to the support plate 13. A plurality of fixing holes 131 are defined in the supporting plate 13 , and each of the fixing holes 131 is configured to fix one of the positioning components 50 . The carrier 30 is configured to carry a product to be processed. The carrier 30 defines at least one positioning hole 32. The positioning hole 32 is opposite to the corresponding fixing hole 131. The positioning hole 32 and the corresponding positioning are respectively located. The assembly 50 is mated.

The positioning assembly 50 is used for positioning the carrier 30. Each positioning assembly 50 includes a driving member 51, a connecting member 53, a plurality of fixing members 54, an expanding pin 55 and a positioning pin 57. The driving member 51 is fixed on the connecting member 53 and is coupled to the positioning pin 57 for driving the positioning pin 57 to slide along the expanding pin 55. In this embodiment, the driving member 51 is a cylinder. The driving member 51 includes a driving rod 512, and one end of the driving rod 512 passes through the connecting member 53 and is coupled to the positioning pin 57. The connecting member 53 is fixed to one side of the supporting plate 13 by the fixing member 54. The connecting member 53 defines a mounting hole 531. The mounting hole 531 is opposite to the fixing hole 131 for allowing the driving. The rod 512 is expanded and contracted in the mounting hole 531.

Referring to FIG. 2, the expansion pin 55 is generally a cylindrical structure, and the expansion pin 55 includes a fixed end 551 and a resisting end 553. In this embodiment, the fixed end 551 and the abutting end 553 are integrally formed. It can be understood that the fixed end 551 and the abutting end 553 can also be integrally connected by welding and bonding. The diameter of the fixed end 551 is larger than the diameter of the abutting end 553. The abutting end 553 is made of a hard elastic material such as steel, hard plastic or the like. The fixing end 551 is received in the fixing hole 131 , and the abutting end 553 protrudes from one end of the fixing hole 131 . The fixed end 551 defines a recess 5512 opposite to the end of the resisting end 553. The recess 5512 is aligned with the mounting hole 531 to allow one end of the driving rod 512 to be telescopically received in the recess 5512. An outer diameter of the end of the abutting end 553 away from the fixed end 551 is gradually reduced, so that an outer guiding wall of the abutting end 553 forms an inclined guiding surface 5531 to cooperate with the positioning hole 32 to make the carrier 30 It can be quickly held at one end of the positioning assembly 50. One end of the abutting end 553 defines a through hole 5532, and one end of the through hole 5532 communicates with the groove 5512. The inner side of the end of the fixed end 551 is gradually increased away from the fixed end 551, so that the inner wall of the abutting end 553 forms an inclined resisting surface 5533. The resisting surface 5533 is formed. For releasably resisting one end of the positioning pin 57. In addition, the expansion pin 55 defines a plurality of slits 555 extending from a central portion of the fixed end 551 to an end of the abutting end 553 away from the fixed end 551. Each of the slits 555 is in communication with the through hole 5532 and the groove 5512. In this embodiment, the number of the slits 555 is four, and is equally spaced on the expansion pin 55 so that the abutting end 553 Can produce deformation.

The positioning pin 57 is slidably received in the through hole 5532 and the groove 5512. The positioning pin 57 is substantially a cylindrical structure. The positioning pin 57 includes a connecting end 572 and a holding end 573. The connecting end 572 passes through the through hole 5532 and the groove 5512 to be connected to the driving rod 512. The diameter of the end of the latching end 573 away from the connecting end 572 is gradually increased toward the connecting end 572, so that the outer wall of the latching end 573 forms a mating surface 5732. The mating surface 5732 can be disengaged and resisted. The resisting surface 5533. The diameter at the maximum diameter of the holding end 573 is larger than the diameter at the minimum diameter of the through hole 5532, which is smaller than the outer diameter of the abutting end 553. The retaining end 573 is open from the side of the connecting end 572 to open a slot 5733 so that the latching end 573 can be deformed.

Referring to FIG. 3 , when the positioning fixture 100 is assembled, the driving member 51 is fixed on the connecting member 53 , and the driving rod 512 passes through the mounting hole 531 , and the driving member 51 is fixed. The connecting member 53 is connected to the fixing hole 131 by the fixing member 54 being fixed to one end of the supporting plate 13 , and the driving rod 512 passes through the fixing hole 131 .

The expansion pin 55 is fixed on the support plate 13 to hold the fixed end 551 in the fixing hole 131. The abutting end 553 extends from the end of the support plate 13 opposite to the driving member 51. The connecting end 572 of the positioning pin 57 is slidably passed through the through hole 5532 and connected to the driving rod 512.

Referring to FIG. 4 and FIG. 5 together, in the initial state, the driving rod 512 pushes one end of the positioning pin 57 out of the through hole 5532. When the positioning fixture 100 is used for product positioning, the product is first held on the carrier 30. The carrier 30 is placed on the support plate 13 such that the abutting end 553 and the positioning pin 57 pass through the positioning hole 32. The driving member 51 is activated, and the driving rod 512 pulls the positioning pin 57 connected thereto in a direction away from the supporting plate 13. After the positioning pin 57 slides into the end of the expansion pin 55, the abutting surface 5533 and the mating surface 5732 start to be squeezed, so that the expansion pin 55 elastically deforms and expands, and the outer diameter of the expansion pin 55 gradually increases. . When the outer diameter of the expansion pin 55 is increased to be the same as the diameter of the positioning hole 32, the abutting end 553 of the expansion pin 55 is engaged with the positioning hole 32, thereby positioning the carrier 30.

When the product is processed, the driving rod 512 pushes the positioning pin 57 back to the initial position, and the expansion pin 55 returns to deformation under the action of the elastic force to release the expansion. At this time, the carrier 30 can be removed from the support plate 13 to prepare the positioning of the next carrier 30.

It will be appreciated that the carrier 30 can also be the product itself.

It can be understood that the bottom plate 11 of the support assembly 10 can be omitted as long as the plurality of support rods 12 are sufficient to keep the support plate 13 fixed.

The positioning assembly 50 of the present invention is applied to a positioning fixture 100. The positioning fixture 100 further includes a carrier 30. The carrier 30 defines a plurality of positioning holes 32. The positioning assembly includes an expansion pin 55 and a positioning pin 57. The pin 55 includes a resisting end 553, and the positioning pin 57 includes a latching end 573. The carrier 30 is sleeved on the expansion pin 55, and the latching end 573 is used to abut the latching end 553 to increase The outer diameter of the expansion pin 55 reduces the gap between the expansion pin 55 and the corresponding positioning hole 32 to achieve a positioning function, and the positioning fixture 100 has high precision.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100‧‧‧ positioning fixture

10‧‧‧Support components

11‧‧‧floor

12‧‧‧Support rod

13‧‧‧Support board

131‧‧‧Fixed holes

30‧‧‧ Vehicles

32‧‧‧Positioning holes

50‧‧‧ Positioning components

51‧‧‧ drive parts

512‧‧‧ drive rod

53‧‧‧Connecting parts

531‧‧‧ mounting holes

54‧‧‧Fixed parts

55‧‧‧Expanding sales

551‧‧‧ fixed end

5512‧‧‧ Groove

553‧‧‧Resistance

5531‧‧‧ Guide surface

5532‧‧‧through hole

5533‧‧‧Resistance

555‧‧‧ gap

57‧‧‧Locating pin

572‧‧‧Connected end

573‧‧‧ card holder

5732‧‧‧Materials

5733‧‧‧Incision

no

55‧‧‧Expanding sales

551‧‧‧ fixed end

553‧‧‧Resistance

5531‧‧‧ Guide surface

5532‧‧‧through hole

5533‧‧‧Resistance

555‧‧‧ gap

57‧‧‧Locating pin

572‧‧‧Connected end

573‧‧‧ card holder

5732‧‧‧Materials

5733‧‧‧Incision

Claims (10)

A positioning assembly, wherein the positioning assembly comprises an expansion pin and a positioning pin, the expansion pin includes a through hole formed in the clamping end and the through clamping end, the positioning pin is removably received in the through hole, the positioning pin The sleeve can be slid to the first position and squeezed to expand, and the locating pin can be slid to the second position to disengage the grip end. The positioning assembly of claim 1, wherein the expansion pin further comprises a fixed end, the positioning pin comprises a connecting end and a holding end, the fixed end defines a groove, and the through hole communicates with the groove The connecting end slidably passes through the through hole and the groove, and the holding end releasably abuts the resisting end. The positioning assembly of claim 2, wherein the expansion pin has a plurality of slits extending from a middle portion of the fixed end to and through the abutting end, the slit and the through hole and the hole The grooves communicate. The positioning assembly of claim 2, wherein an outer diameter of the end of the abutting end away from the fixed end is gradually reduced, and an outer surface of the abutting end forms a guiding surface. The positioning assembly of claim 3, wherein an inner diameter of the end of the through hole away from the fixed end gradually increases away from the fixed end, and an inner surface of the resisting end forms an inclined resisting surface. The diameter of the end of the latching end away from the connecting end is gradually increased toward the connecting end, and the outer wall of the latching end forms a mating surface, and the mating surface can be disengaged against the resisting surface. The positioning assembly of claim 5, wherein the diameter at the maximum diameter of the retaining end is greater than the diameter at the smallest diameter of the through hole. A positioning fixture, wherein the positioning fixture comprises the positioning assembly of any one of claims 1-6. The positioning fixture of the seventh aspect of the invention, wherein the positioning fixture further comprises a carrier and a driving component, the positioning hole is formed on the carrier, the expansion pin passes through the positioning hole, and the positioning pin is worn at one end. The expansion pin is passed through and connected to the drive member. The positioning fixture of claim 8, wherein the positioning fixture further comprises a supporting component, the positioning component further comprising a connecting member, the supporting component is provided with a plurality of fixing holes, and the expanding pin is disposed on the fixing component In one of the fixing holes, the driving member is fixed on the connecting member, and the connecting member is fixed on the supporting assembly. The positioning fixture of claim 8, wherein the driving member comprises a driving rod, the positioning pin is coupled to the driving rod, and the expansion pin is fixed in the fixing hole.