Positioning mechanism for tool checking fixture

Abstract

The utility model discloses a positioning mechanism for a tool checking fixture, which comprises a positioning seat and a positioning pin, and is characterized in that the positioning pin can be arranged on the positioning seat in an up-and-down movable manner, and a switching mechanism for realizing rapid switching between an upward ejection positioning mode and a downward retreat non-positioning mode of the positioning pin is arranged between the positioning pin and the positioning seat. The device has the advantages that the structure is simple, the positioning pin can be ejected upwards to position a product by operating the switching mechanism, or the positioning pin can return downwards into the positioning seat, and corresponding positions of the product can be inspected by matching with corresponding inspection tools (such as a go-no go gauge), so that the efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to product inspection technical field especially is a positioning mechanism for tool gauge. BACKGROUND

[0002] In order to guarantee relatively high product qualified rate after flowing into the market after the product is completed, usually will require corresponding quality inspection before leaving factory, and the quality inspection needs to use corresponding tool gauge with positioning and inspection function, and sometimes for the same position of part product, may involve positioning and need to do inspection, and owing to the limited space of tool, usually only has the positioning mechanism that can realize fixed positioning on this position, after the product is placed, directly forms positioning, and then the positioning mechanism is replaced, and after the inspection is finished, the positioning mechanism is replaced, resulting in low efficiency. SUMMARY

[0003] The utility model provides a positioning mechanism for tool gauge that simple structure can position product and realize inspection without dismounting.

[0004] The utility model adopts the technical scheme that:

[0005] A positioning mechanism for tool gauge, including positioning seat and positioning pin, the positioning pin can be up and down movable and is arranged on the positioning seat, the positioning pin and the positioning seat are provided with the switching mechanism for realizing the quick switching of the positioning mode of the upward ejection of the positioning pin and the non-positioning mode of the downward retreat.

[0006] The positioning pin includes the positioning head and the movable guide portion that are sequentially arranged from top to bottom, the positioning seat is provided with the vertical guide cavity that is matched with the movable guide portion, and the movable guide portion can be up and down movable and is arranged in the guide cavity.

[0007] The switching mechanism includes the switching cavity that is transversely through and is arranged on the positioning seat and the switching block that can be horizontally pulled out and is arranged in the switching cavity, the switching cavity is communicated with the guide cavity, the upper end surface of the switching block includes the first abutting flat end surface and the second abutting flat end surface that are sequentially and spaced apart along the pulling-out direction, the position of the first abutting flat end surface in the up-down direction is lower than the position of the second abutting flat end surface, and the first abutting flat end surface and the second abutting flat end surface are connected through a slant end surface.

[0008] The switching block is arranged below the movable guide part, in the positioning mode, the bottom of the movable guide part is supported by the second abutting flat end surface, the positioning head is extended out of the positioning seat and into the corresponding positioning hole of the product, in the non-positioning mode, the bottom of the movable guide part is supported by the first abutting flat end surface, the positioning head is retracted into the positioning seat.

[0009] An upper end of the switching block along the pulling direction is provided with a pulling handle, and the pulling handle is arranged outside the positioning seat.

[0010] The switching block is arranged below the movable guide part, in the positioning mode, the bottom of the movable guide part is supported by the second abutting flat end surface, the positioning head is extended out of the positioning seat and into the corresponding positioning hole of the product, in the non-positioning mode, the bottom of the movable guide part is supported by the first abutting flat end surface, the positioning head is retracted into the positioning seat.

[0011] The upper end of the guide rod is provided with external threads, and the movable guide part is correspondingly provided with internal thread holes matched with the external threads, and the upper end of the guide rod is screwed into the internal thread holes.

[0012] The bottom of the guide cavity is provided with an extension mounting hole for mounting the guide rod, and the upper end of the guide rod is arranged in the guide cavity from the extension mounting hole.

[0013] The guide cavity is provided with a limiting guide sleeve matched with the movable guide part, the movable guide part is movably arranged in the limiting guide sleeve, and the limiting guide sleeve has an inner diameter smaller than an outer contour size of the positioning head.

[0014] The top of the positioning head is coaxially provided with a circular table-shaped guide-in part with a small top and a large bottom.

[0015] The side of the positioning seat is outwardly extended and provided with a mounting plate, the lower portion of the mounting plate is provided with a mounting seat, and the mounting seat is fixedly arranged on a tooling bottom plate.

[0016] Compared with the prior art, the positioning pin can be upwardly extruded to realize positioning of the product, or the positioning pin can be retracted into the positioning seat, and corresponding gauges (such as go-no-go gauges) are used to perform corresponding inspection on the corresponding position of the product, so that the efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of a three-dimensional structure of the utility model in the retracted state of the positioning pin.

[0018] Figure 2 is a three-dimensional structure schematic diagram of the utility model in the non-positioning state after the product is put on;

[0019] Figure 3 is Figure 2 a sectional view structure schematic diagram;

[0020] Figure 4 is an exploded structure schematic diagram of the utility model;

[0021] Figure 5 is a three-dimensional structure schematic diagram of the utility model in the positioning state after the product is put on and the mounting seat is removed. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in combination with the embodiment.

[0023] As shown in the figure, a positioning mechanism for tool gauge, including positioning seat 1 and positioning pin 2, positioning pin 2 is movably set on positioning seat 1, and the switching mechanism for realizing the quick switching of the upward ejection positioning mode and the downward backoff non-positioning mode of positioning pin 2 is arranged between positioning pin 2 and positioning seat 1.

[0024] In this embodiment, positioning pin 2 includes positioning head 201 and movable guide part 202 arranged in sequence from top to bottom, and the vertical guide cavity 11 matched with movable guide part 202 is arranged in positioning seat 1, and movable guide part 202 is movably arranged in guide cavity 11;

[0025] The switching mechanism includes the transversely through switching cavity 12 arranged on positioning seat 1 and the switching block 3 horizontally pullably arranged in switching cavity 12, switching cavity 12 is communicated with guide cavity 11, and the upper end surface of switching block 3 includes the first abutting flat end surface 31 and the second abutting flat end surface 32 arranged in sequence and spaced apart along the extraction direction, the position of first abutting flat end surface 31 in the up-down direction is lower than the position of second abutting flat end surface 32, and first abutting flat end surface 31 and second abutting flat end surface 32 are connected through a slanted end surface 33;

[0026] Switching block 3 is arranged below movable guide part 202, in the positioning mode, the bottom of movable guide part 202 is supported by second abutting flat end surface 32, so that positioning head 201 extends out of positioning seat 1 and extends into the corresponding positioning hole A1 arranged in product A, and in the non-positioning mode, the bottom of movable guide part 202 is supported by first abutting flat end surface 31, so that positioning head 201 is retracted and arranged in positioning seat 1. The above-mentioned switching mechanism, simple structure, convenient operation, can realize the quick switching of the positioning mode and the non-positioning mode.

[0027] In this embodiment, in order to facilitate the pulling operation of the switching block 3, a pulling handle 34 is arranged at one end of the switching block 3 in the pulling direction, and the pulling handle 34 is arranged outside the positioning seat 1.

[0028] In this embodiment, a waist-shaped guide groove 35 is arranged on the switching block 3 in the pulling direction, and a guide rod 4 is arranged below the positioning seat 1 and cooperates with the waist-shaped guide groove 35, and the upper end of the guide rod 4 extends into the positioning seat 1 from top to bottom and is fixedly connected with the movable guide part 202 through the waist-shaped guide groove 35. Through the cooperation of the waist-shaped guide groove 35 and the guide rod 4, the pulling guide is realized, and the stable installation of the switching block 3 on the positioning seat 1 is ensured, and the installation failure caused by the excessive pulling of the switching block 3 is avoided.

[0029] In this embodiment, the upper end of the guide rod 4 is provided with external threads, and the movable guide part 202 is correspondingly provided with an internal threaded hole (not shown in the figure) matched with the external threads, and the upper end of the guide rod 4 is screwed in the internal threaded hole. The structure is simple, easy to install and disassemble, and low in cost.

[0030] In this embodiment, the bottom of the guide cavity 11 is provided with an extension installation hole 111 for the extension installation of the guide rod 4, and the upper end of the guide rod 4 extends into the guide cavity 11 from the extension installation hole 111. The structure is simple, and the extension installation of the guide rod 4 is facilitated.

[0031] In this embodiment, a limiting guide sleeve 6 is arranged in the guide cavity 11 and cooperates with the movable guide part 202, and the movable guide part 202 is movably arranged in the limiting guide sleeve 6, and the inner diameter of the limiting guide sleeve 6 is smaller than the outer contour size of the positioning head 201. The limiting guide sleeve 6 limits the positioning head 201, and guides the movement of the movable guide part 202, so that the positioning seat 1 has better universality and can be adapted to different positioning pins 2. Only the limiting guide sleeve 6 that is adapted needs to be installed in the positioning seat 1.

[0032] In this embodiment, a circular table-shaped guide-in part 203 with a small top and a large bottom is coaxially arranged on the top of the positioning head 201. The positioning installation is smooth.

[0033] In this embodiment, the side of the positioning seat 1 extends outwardly to be provided with a mounting plate 10, and the lower part of the mounting plate 10 is provided with a mounting seat 7, and the mounting seat 7 is fixedly arranged on a tooling bottom plate (not shown in the figure). The positioning seat 1 is supported and fixed on the tooling bottom plate through the mounting seat 7, and the installation and the up-down position adjustment of the guide rod 4 are facilitated.

[0034] In the positioning mode, the switching block 3 is pushed, the bottom of the movable guide part 202 of the positioning pin 2 is supported by the second abutting flat end surface 32, the position of the positioning pin 2 is lifted, the positioning head 201 extends out of the positioning seat 1 and extends into the positioning hole A1 corresponding to the product A; in the non-positioning mode, the switching block 2 is pulled, the bottom of the movable guide part 202 of the positioning pin 2 is supported by the first abutting flat end surface 31, the position of the positioning pin 2 is lowered, and the positioning head 201 is retracted into the positioning seat 1. At this time, the end surface of the product A and the top of the positioning seat 1 have a test gap J, and the test of the product A at this position can be realized by extending the cooperating testing tool into the test gap J.

Claims

1. A positioning mechanism for a tooling gauge comprising a positioning seat and a positioning pin, characterized in that The positioning pin is movably arranged on the positioning seat, and a switching mechanism is arranged between the positioning pin and the positioning seat to realize quick switching between the upward ejection mode and the downward retraction non-positioning mode of the positioning pin. The positioning pin comprises a positioning head and a movable guide part arranged in sequence from top to bottom, and a vertical guide cavity matched with the movable guide part is arranged in the positioning seat. The switching mechanism comprises a transversely penetrating switching cavity arranged on the positioning seat and a switching block horizontally arranged in the switching cavity, the switching cavity is communicated with the guide cavity, the upper end surface of the switching block comprises a first abutting flat end surface and a second abutting flat end surface arranged in sequence and spaced apart along the extraction direction, the position of the first abutting flat end surface in the up-down direction is lower than that of the second abutting flat end surface, and the first abutting flat end surface and the second abutting flat end surface are connected by a slanted end surface. The switching block is arranged below the movable guide part, in the positioning mode, the bottom of the movable guide part is supported by the second abutting flat end surface, the positioning head is extended out of the positioning seat and into the corresponding positioning hole of the product, and in the non-positioning mode, the bottom of the movable guide part is supported by the first abutting flat end surface, and the positioning head is retracted and arranged in the positioning seat.

2. A positioning mechanism for a tooling gauge as claimed in claim 1, wherein An extraction handle is arranged on one end of the switching block along the extraction direction, and the extraction handle is arranged outside the positioning seat.

3. A positioning mechanism for a tooling gauge as claimed in claim 1, wherein A waist-shaped guide groove penetrating up and down is arranged on the switching block along the extraction direction, a guide rod matched with the waist-shaped guide groove is arranged below the positioning seat, and the upper end of the guide rod extends into the positioning seat from top to bottom and is fixedly connected with the movable guide part through the waist-shaped guide groove.

4. A positioning mechanism for a tooling gauge as claimed in claim 3, wherein The upper end rod part of the guide rod is provided with external threads, and the movable guide part is correspondingly provided with an internal thread hole matched with the external threads, and the upper end of the guide rod is screwed in the internal thread hole.

5. A positioning mechanism for a tooling gauge as claimed in claim 3, wherein The bottom of the guide cavity is provided with an extension installation hole for the extension of the guide rod, and the upper end of the guide rod extends into the guide cavity from the extension installation hole.

6. A positioning mechanism for a tooling gauge as claimed in claim 1, wherein A limiting guide sleeve matched with the movable guide part is arranged in the guide cavity, the movable guide part is movably arranged in the limiting guide sleeve, and the inner diameter of the limiting guide sleeve is smaller than the outer contour size of the positioning head.

7. A positioning mechanism for a tooling gauge as claimed in claim 1, wherein A circular table-shaped guide part with a small top and a large bottom is coaxially arranged on the top of the positioning head.

8. A positioning mechanism for a tooling gauge as claimed in claim 3, wherein An installation plate is arranged on the side of the positioning seat, a mounting seat is arranged below the installation plate, and the mounting seat is fixedly arranged on the tooling bottom plate.

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