TWI399519B - Testing machine for testing perpendicularity - Google Patents

Description

Verticality detector

The present invention relates to a perpendicularity detector, and more particularly to a detector for detecting the perpendicularity of an end face of a workpiece.

In production, it is often necessary to inspect a surface of a workpiece to determine if it is perpendicular to a certain reference surface. Such testing operations have long been an efficiency bottleneck in production or measurement operations. How to quickly, accurately and effectively verify has always been the goal pursued by the industry.

As shown in Fig. 1, an MP3 aluminum extruded outer casing is formed into a rectangular parallelepiped strip material, which is subjected to a milling sawing step to obtain a rectangular blank workpiece 1. Whether the perpendicularity of the end surface (fracture cross section) 3 of the workpiece 1 and its adjacent surface is within the range required by the specification will directly affect the quality of the subsequent finished product.

Usually, when detecting the perpendicularity of the end face 3, it is performed by using a square ruler with a thickness gauge, or by converting the tolerance displacement amount into an angle and then passing through the angle gauge. In the above two ways, the detection efficiency is low, and it is difficult to meet the demand for mass production.

In view of the above, it is necessary to provide a detector that can quickly and accurately determine the perpendicularity of the end face of the workpiece.

A perpendicularity detector for detecting the perpendicularity of an end surface of a workpiece with respect to a reference plane on the workpiece, the perpendicularity detector comprising: a mounting table for supporting the workpiece; and a fixing platform mounted on the mounting table Conductive positioning block, the positioning block is provided with two sliding slots for detecting the perpendicularity of the end surface of the workpiece The end of the workpiece faces the positioning block; a cover plate fixed to the mounting table; and two detecting units, each detecting unit includes an electrically conductive limit stop, an electrically conductive sliding body and a An elastic member, the limiting block is insulatively connected to the positioning block, and the sliding slot corresponding to the positioning block defines a through hole having a larger diameter than the sliding slot, the sliding body includes a measuring block and a fixed portion a blocking piece at one end of the measuring block, the measuring block of the sliding body is slidably disposed in the sliding slot of the positioning block through the through hole of the limiting block, and the elastic element is sandwiched between the blocking piece of the sliding body and the cover Between the plates, in the natural state, the elastic member abuts against the blocking piece of the sliding body, so that the measuring block of the sliding body protrudes from the corresponding sliding groove of the positioning block by a distance of a maximum allowable deviation of the verticality, The limit stop, the blocking piece of the sliding body, the measuring block of the sliding body and the positioning block form a detecting circuit, and when detecting the perpendicularity of the end surface of the workpiece, the measuring of the sliding body is pushed by the end surface of the workpiece The case of the block makes the detection circuit pass or break Vertical end surface of the workpiece is qualified.

When the perpendicularity of the workpiece end face is detected by the perpendicularity detector of the present invention, the operator only needs to perform two detection operations on the workpiece based on the bottom surface and the top surface of the workpiece, respectively, and can combine the detection results under the two detection actions. It is judged whether the perpendicularity of the end surface of the workpiece is acceptable, and if it is unsatisfactory, it can be judged as what is unqualified.

Referring to FIG. 1, the perpendicularity detector of the present invention is used to detect the perpendicularity of the end face 3 of the workpiece 1. The workpiece 1 comprises a top surface 5 and a bottom surface 6 which are parallel to each other and two side surfaces 8, 9 which are parallel to each other. The perpendicularity detector of the present invention can be used to detect the end face 3 of the workpiece 1 with respect to the bottom surface 6 (or top surface 5) and the side surface 8 (or The verticality of the side 9).

Referring to FIG. 2 and FIG. 3 , a specific embodiment of the verticality detector of the present invention includes an electrically conductive mounting table 10 , a backing plate 11 fixed to the upper surface of the mounting table 10 , and a fixing surface on the mounting platform 10 . And a positioning reference block 12 abutting on the side of the backing plate 11 , an electrically conductive positioning stop 13 fixed on the upper surface of the mounting table 10 and abutting against one end of the backing plate 11 , and an upper surface of the mounting table 10 and abutting The insulating support block 14 of the positioning block 13 , an insulating cover 15 on the upper surface of the mounting table 10 and abutting against the insulating support block 14 , a first detecting unit and a second detecting unit are mounted on The pointing device 20 of the mounting table 10, an electrical control box 30 mounted under the mounting table 10, and four support bolts 40 supporting the mounting table 10. The positioning block 13, the insulating support block 14 and the insulating cover 15 are connected in series by a plurality of locking screws 16 through a threaded connection.

A ground terminal 101 is disposed on the mounting base 10, and the ground terminal 101 is grounded.

Two positioning slots 131 and 132 are defined in the positioning block 13 , and the connecting lines of the sliding slots 131 and 132 are parallel to the backing plate 11 . When the workpiece 1 is mounted on the perpendicularity detector of the present invention, the end face 3 of the workpiece 1 is mapped onto the positioning block 13 with an orthographic projection, and the chutes 131, 132 are perpendicular to the orthographic projection and are connected to the orthographic projection ( See Figure 4).

Two through holes 141 and 142 are defined in the insulating support block 14, and the through holes 141 and 142 are coaxial with and communicate with the sliding grooves 131 and 132 of the positioning block 13, respectively.

A escaping groove 150 is defined in a side of the insulating cover 15 facing the insulating support block 14 . Two accommodating grooves 151 and 152 are defined in the wall 153 (see FIG. 6 ) of the escaping groove 150 facing the insulating support block 14 (see FIG. 6 ) (see Figure 6). Storing slot 151, 152 are coaxial with the through holes 141, 142 of the insulating support block 14, respectively.

The first detecting unit corresponds to the sliding slot 131 of the positioning stopper 13 and the through hole 141 of the insulating support block 14. The first detecting unit includes an electrically conductive limit stop 51, an electrically conductive first sliding body and an elastic member 61. The limiting block 51 is fixed to the insulating support block 14 and is received in the avoidance groove 150 of the insulating cover 15. The limiting block 51 defines a square through hole 510, and the through hole 510 and the sliding slot 131 of the positioning block 13 The through holes 141 of the insulating support block 14 are coaxial and communicated, and the four sides of the cross section of the through hole 510 are respectively parallel and larger than the four sides of the cross section of the chute 131 of the positioning block 13. The limit stop 51 is provided with a connection terminal 511, and the connection terminal 511 is connected to a high level. Referring to FIG. 6 , in the embodiment, the first sliding body includes a measuring block 70 , a blocking piece 73 and a screw 71 that are slidably mounted on the sliding slot 131 of the positioning block 13 . One end of the measuring block 70 defines a threaded hole. The stud of the screw 71 is threaded through the blocking piece 73 and screwed into the threaded hole of the measuring block 70. The nut of the screw 71 forms an extension. In other embodiments, the measuring block 70, the flap 73 and the extension of the first sliding body may also be integrally formed. The elastic member 61 is a spring. One end of the elastic member 61 is sleeved on the extending portion of the first sliding body and abuts against the blocking piece 73. The other end of the elastic member 61 is received in the receiving groove 151 of the insulating cover 15 and abuts against Abut the insulating cover 15. The measuring block 70 of the first sliding body can just slide along the sliding slot 131 of the positioning block 13 , and the measuring block 70 does not contact the limiting stop 51 (because the through hole 510 of the limiting stop 51 is The section is large enough). Thus, the limit stop 51 (connected to the high level through the terminal 511 thereof), the blocking piece 73 of the first sliding body, the measuring block 70 of the first sliding body, the positioning block 13 and the mounting table 10 (through the same Ground terminal 101 Grounding) forms a first detecting circuit, and the opening and closing of the first detecting circuit depends on whether the blocking piece 73 of the first sliding body is in contact with the limiting stopper 51. Normally, the elastic member 61 of the first detecting unit pushes against the blocking piece 73 of the first sliding body, so that the blocking piece 73 is in contact with the limiting stopper 51, so that the free end of the measuring block 70 of the first sliding body A distance δ is slipped from the sliding groove 131 of the positioning block 13 (refer to FIG. 7), wherein the distance δ is the maximum allowable deviation amount corresponding to the perpendicularity of the end surface 3 of the workpiece 1 to be tested. Thus, in the normal state, the first detection circuit is turned on.

The second detecting unit corresponds to the sliding slot 132 of the positioning block 13 and the through hole 142 of the insulating support block 14. The second detecting unit includes an electrically conductive limit stop 52, an electrically conductive second sliding body and an elastic member 62. The limiting block 52 is fixed to the insulating support block 14 and is received in the avoidance groove 150 of the insulating cover 15. The limiting block 52 defines a square through hole 520, the through hole 520 and the sliding slot 132 of the positioning block 13. The through holes 142 of the insulating support block 14 are coaxial and communicated, and the four sides of the cross section of the through hole 520 are respectively parallel and larger than the four sides of the cross section of the chute 132 of the positioning block 13. The limit stop 52 is provided with a terminal 521, and the terminal 521 is connected to a high level. Referring to FIG. 6 , in the embodiment, the second sliding body includes a measuring block 80 , a blocking piece 83 and a screw 81 which are slidably mounted on the sliding slot 132 of the positioning block 13 . One end of the measuring block 80 defines a threaded hole. The stud of the screw 81 is threaded through the blocking piece 83 and screwed into the threaded hole of the measuring block 80. The nut of the screw 81 forms an extension. In other embodiments, the measuring block 80, the blocking piece 83 and the extension of the second sliding body may also be integrally formed. The elastic member 62 is a spring, and one end of the elastic member 62 is sleeved on the extension of the second sliding body and abuts against In the blocking piece 83, the other end of the elastic member 62 is received in the receiving groove 152 of the insulating cover 15 and abuts against the insulating cover 15. The measuring block 80 of the second sliding body can just slide along the sliding slot 132 of the positioning block 13 , and the measuring block 80 does not contact the limiting stop 52 (because the through hole 520 of the limiting stop 52 is The section is large enough). Thus, the limit stop 52 (connected to the high level through the terminal 521 thereof), the blocking piece 83 of the second sliding body, the measuring block 80 of the first sliding body, the positioning block 13 and the mounting table 10 (through the same The ground terminal 101 is grounded to form a second detecting circuit, and the opening and closing of the second detecting circuit depends on whether the blocking piece 83 of the second sliding body is in contact with the limiting stopper 52. Normally, the elastic member 62 of the second detecting unit pushes against the blocking piece 83 of the second sliding body, so that the blocking piece 83 is in contact with the limiting stopper 52, so that the free end of the measuring block 80 of the second sliding body A distance δ is slipped from the sliding groove 132 of the positioning block 13 (refer to FIG. 7), wherein the distance δ corresponds to the maximum allowable deviation amount of the perpendicularity of the end surface 3 of the workpiece 1 to be tested. Thus, in the normal state, the second detection circuit is turned on.

The indicating device 20 is used to indicate the detection result, and includes three indicator lights 21, 22, and 23.

Referring to FIG. 9, a processor is disposed in the electrical control box 30, and the processor controls the indication device 20 to make a corresponding indication according to the on/off condition of the first detection circuit and the second detection circuit.

Referring to FIG. 1 and FIG. 4, when detecting by the perpendicularity detector of the present invention, each workpiece 1 requires two detection actions. The first detecting action, the workpiece 1 is laid flat on the backing plate 11 and the end face 3 of the workpiece 1 is directed toward the positioning stop 13; the workpiece 1 is pushed by a force F so that the bottom surface 6 of the workpiece 1 (or top) The surface 5) is in close contact with the spacer 11 and the side surface 8 (or the side surface 9) is in close contact with the positioning reference block 12, and the end surface 3 to be tested is abutted against the positioning stopper 13. In the second detecting action, the workpiece 1 is placed on the backing plate 11 and the end surface 3 of the workpiece 1 is directed toward the positioning stopper 13; the workpiece 1 is pushed by a force so that the top surface 5 (or the bottom surface 6) of the workpiece 1 is tight. The end surface 9 (or the side surface 8) of the backing plate 11 is attached to the positioning reference block 12, and the end surface 3 to be tested is abutted against the positioning block 13.

As shown in FIG. 5 and FIG. 6, when the perpendicularity of the end surface 3 of the workpiece 1 is qualified under a certain detecting operation, the end surface 3 of the workpiece 1 is pushed against the measuring block 70 of the first sliding body of the first detecting unit and the The measuring block 80 of the second sliding body of the second detecting unit causes the measuring blocks 70, 80 to slide inward along the respective sliding grooves 131, 132 of the positioning block 13. Then, the blocking piece 73 of the first sliding body is out of contact with the limit stop 51, the first elastic element 61 is compressed, the first detecting circuit is broken; the blocking piece 83 of the second sliding body is disengaged from the limit position At the contact of block 52, second resilient member 62 is compressed and the second detecting circuit is open. The processor accordingly controls the indicator light 23 of the pointing device 20 to be illuminated and the indicator lights 21, 22 are not illuminated to indicate to the operator that the perpendicularity of the end face 3 of the workpiece 1 is qualified under the detecting action. In particular, when the perpendicularity of the end face 3 of the workpiece 1 is acceptable and there is no deviation, the workpiece 1 will completely push the exposed portions of the measuring blocks 70, 80 in the normal state into the corresponding sliding slots 131, 132 of the positioning metablock 13, The spacing of the flaps 73, 83 from the corresponding limit stops 51, 52 is made equal to δ.

When the perpendicularity of the end surface 3 of the workpiece 1 with respect to the side surface 8 (or the side surface 9) is unacceptable under a certain detecting action, the measuring block 70 of the first sliding body of the first detecting unit and the second detecting unit Two sliding body measuring block One of the 80 will not be pushed by the workpiece 1, but the corresponding first detection circuit or second detection circuit will remain in an on state. For example, in the case of the verticality defect shown in FIG. 7, the first detecting unit is kept in a normal state, the first detecting circuit is turned on, and the measuring block 80 of the second sliding body of the second detecting unit is pushed by the workpiece 1, the first The blocking piece 83 of the two sliding body is disengaged from the contact with the limiting stopper 52, the second elastic member 62 is compressed, and the second detecting circuit is disconnected, whereby the processor controls the indicator light 21 of the indicating device 20 to be illuminated and the indicator light 22 is turned on. 23 is not bright. Similarly, if the measuring block 70 of the first sliding body of the first detecting unit is pushed by the workpiece 1, the second detecting unit remains in a normal state, the indicator light 22 is on and the indicator lights 21, 23 are not lit. Thus, the operator can know that the perpendicularity of the end face 3 of the workpiece 1 is unqualified under the detecting operation and can determine what is unacceptable.

As shown in FIG. 8, when the perpendicularity of the end surface 3 of the workpiece 1 with respect to the bottom surface 6 (or the top surface 5) is unacceptable in a certain detection operation, the measurement block 70 of the first sliding body of the first detecting unit is The measurement blocks 80 of the second sliding body of the second detecting unit are not pushed by the workpiece 1, so that the corresponding first detecting circuit and the second detecting circuit are both kept in an on state. Accordingly, the processor controls the indicator lights 21, 22 of the pointing device 20 to be illuminated and the indicator light 23 is not illuminated to indicate to the operator that the verticality of the end face 3 of the workpiece 1 is unqualified and unqualified under the detecting action. .

In this way, after the above two detection operations, the operator can determine whether the verticality of the end face 3 of the workpiece 1 is qualified in combination with the detection result under the two detection operations, and if it is unqualified, it can determine what is unqualified. .

In summary, the present invention complies with the requirements of the invention patent, and Application for interest. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

Workpiece ‧‧1

End face ‧‧3

Top ‧‧5

Bottom ‧‧6

Side ‧‧8,9

Installation table ‧‧10

Ground terminal ‧‧‧101

Positioning reference block ‧‧12

Positioning block ‧‧13

Chute ‧‧‧131,132

Insulating support block ‧‧14

Through hole ‧‧141,142

Insulating cover ‧‧15

Avoidance slot ‧‧‧150

Included trough ‧‧‧151,152

Locking screw ‧‧16

Indicating device ‧‧20

Indicator light ‧‧21,22,23

Electrical control box ‧ ‧ 30

Support bolt ‧‧40

Limit block ‧‧51,52

Through hole ‧ ‧ 510, 520

Terminal block ‧‧‧511,521

Elastic components ‧‧‧61,62

Measuring block ‧‧70,80

Screw ‧‧‧71,81

Block ‧‧‧73, 83

Figure 1 is a perspective view of a workpiece.

2 is an exploded perspective view of a perpendicularity detector of a preferred embodiment of the present invention.

Figure 3 is an assembled view of Figure 2.

Figure 4 is a perspective view of a preferred embodiment of the present invention for detecting a workpiece by a perpendicularity detector.

Figure 5 is a front elevational view of Figure 4 with a partial cross-section.

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 5.

Figure 7 is similar to Figure 6 and is a view of the workpiece when it fails.

Figure 8 is similar to Figure 5 and is a view of the workpiece when it fails.

Figure 9 is a block diagram showing the electrical relationship of the perpendicularity detector of the preferred embodiment of the present invention in use.

Workpiece ‧‧1

Pad ‧ ‧ 11

Positioning reference block ‧‧12

Positioning block ‧‧13

Claims (9)

A perpendicularity detector for detecting the perpendicularity of an end surface of a workpiece with respect to a reference plane on the workpiece, the perpendicularity detector comprising: a mounting table for supporting the workpiece; and a fixing platform mounted on the mounting table a conductive positioning block, the positioning block is provided with two sliding grooves, and when detecting the perpendicularity of the end surface of the workpiece, the end of the workpiece faces the positioning block; a cover plate fixed to the mounting table; Two detecting units, each detecting unit comprises an electrically conductive limiting block, an electrically conductive sliding body and an elastic element, the limiting block is insulatively connected to the positioning block and corresponds to the sliding of the positioning block The slot defines a through hole having a larger aperture than the sliding slot. The sliding body includes a measuring block and a blocking piece fixed to one end of the measuring block. The measuring block of the sliding body is slidably disposed through the through hole of the limiting block. In the sliding slot of the positioning block, the elastic element is interposed between the blocking piece of the sliding body and the cover plate. In a natural state, the elastic element abuts against the blocking piece of the sliding body, so that the sliding body is The measuring block extends out of the corresponding stop of the positioning block a distance of a maximum allowable deviation of a piece of verticality, the limit stop, the blocking piece of the sliding body, the measuring block of the sliding body, and the positioning block form a detecting circuit, and when detecting the perpendicularity of the end surface of the workpiece, When the end face of the workpiece is pushed against the measuring block of the sliding body, the detecting circuit is turned on or off to determine whether the perpendicularity of the end face of the workpiece is acceptable. The verticality detector according to claim 1, further comprising a pointing device, wherein the indicating device displays according to the on/off condition of the detecting circuit The result of the test. The verticality detector of claim 1, wherein the limit stop is connected to the positioning block through an insulating support block fixed to the mounting table. The perpendicularity detector of claim 1, wherein the elastic element is a spring. The verticality detector according to claim 1 or 4, wherein the cover plate has two receiving slots corresponding to the elastic members of the detecting unit, and one end of each elastic member is received and abuts against the corresponding capacity. Set in the slot. The perpendicularity detector of claim 5, wherein one side of the sliding body of the detecting unit is provided with an extending portion, and the other end of the elastic member is sleeved on the extending portion of the corresponding sliding body and abuts correspondingly The baffle. The verticality detector of claim 1, wherein the limiting unit of the detecting unit is connected with a terminal for connecting to a high level. The verticality detector of claim 1, wherein the positioning block is grounded. The verticality detector of claim 1, wherein the mounting station is electrically conductive, the mounting base is connected to a ground terminal, the ground terminal is used for grounding, and the positioning block is electrically connected to the mounting base. .