Rapid centering device

Abstract

The utility model relates to a rapid centering device which comprises a connecting sleeve, a pull rod, a base, a connecting rod, a handle, a pin, a pin, a spring nail, a screw plug, a positioning plug, a push rod, a small handle, a screw, a nut, a circlip for a shaft, a rectangular spring, a pressure spring and a round shackle cylindrical spiral extension spring. The bottom end of the pull rod is arranged in one end of the connecting rod and penetrates through the pull rod and the connecting rod through a pin, and the two ends of the pin are limited and fixed through elastic check rings for shafts; the pin penetrates through the pin holes of the base and the connecting rod, the handle is arranged on the connecting rod and penetrates through the connecting rod and the handle through the pin, and the elastic check ring for the shaft is installed at the other end of the pin for limiting. The round shackle cylindrical spiral extension spring is arranged in the spring nail, the plug is screwed into the base, the push rod is arranged in the plug, the pressure spring is sleeved with the push rod and installed in the plug, the positioning plug is arranged in the plug, and the outer end of the push rod is arranged in the small handle. The spring structure is used for limiting the position of the positioning pin, assembling and disassembling are convenient, and universality and working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to a positioning device of a positioning fixture in the field of mechanical processing, in particular to a rapid centering device. Background Art

[0002] Fixtures mostly use fixed locating pins for positioning. However, for positioning parallel to the processed surface, if fixed locating pins are used, the clamping stroke is increased and it is more inconvenient to clamp heavy parts.

[0003] In view of the above-mentioned defects of the existing fixed positioning pins, the designers have continuously studied and designed, and after repeated trials and improvements, finally created the utility model which is truly of practical value. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects of the existing fixed positioning pins and provide a rapid centering device with a new structure. The technical problem to be solved is to reduce the clamping stroke and make it easier to clamp heavy parts, thereby making it more suitable for practical use.

[0005] Another object of the utility model is to provide a quick centering device. The technical problem to be solved is to use a spring structure to limit the position of the locating pin, which is convenient for loading and unloading parts. The utility model is used as a standard module, which improves the versatility and is easy for the operator to use, thereby being more suitable for practical use.

[0006] Another object of the utility model is to provide a quick centering device. The technical problem to be solved is to make it possible to serve as a universal standard module. For positioning holes of different specifications, only positioning pins need to be designed separately. This quick centering device has a compact structure, good performance, good parts processing technology, and is easy to implement, thereby being more suitable for practical use.

[0007] Another object of the utility model is to provide a rapid centering device, the technical problem to be solved is to make its structure compact, which not only meets the requirements of parts processing and positioning, but also shortens the clamping stroke of the fixture and improves the processing efficiency, thereby being more suitable for practical use and having industrial utilization value.

[0008] The purpose of the utility model and the technical problem solved are achieved by adopting the following technical solutions. A quick centering device proposed by the utility model includes a connecting sleeve, a pull rod, a base, a connecting rod, a handle, a pin, a first pin, a second pin, a spring pin, a screw plug, a positioning plug, a push rod,

[0009] A small handle, a first screw, a second screw, a first nut, a second nut, a shaft elastic ring, a rectangular spring, a pressure spring and a round hook cylindrical helical tension spring, of which:

[0010] The pull rod passes through the connecting sleeve, the rectangular spring is installed in the pull rod, and the pull rod passes through the base; the bottom end of the pull rod is installed in one end of the connecting rod and the first pin passes through the pull rod and the connecting rod, and the two ends of the first pin are fixed by the shaft with elastic retaining rings;

[0011] The pin passes through the second pin hole of the base and the connecting rod, the threaded end of the pin is locked by a nut, the handle is placed in the connecting rod, and the second pin passes through the connecting rod and the handle, and the other end of the second pin is installed into the shaft with an elastic retaining ring to limit the position;

[0012] The round hook ring cylindrical spiral tension spring is placed in the spring nail, the screw plug is screwed into the base, the push rod is placed in the screw plug, the pressure spring is sleeved into the push rod and installed in the screw plug, the positioning plug is placed in the screw plug, and the outer end of the push rod is placed in the small handle.

[0013] Furthermore, the connecting sleeve comprises a first screw connecting hole and a first pull rod hole, the central large hole of the connecting sleeve is the first pull rod hole, and three evenly distributed first screw connecting holes are arranged on the circumference of the connecting sleeve. The pull rod passes through the first pull rod hole of the connecting sleeve and is limited on the end face. Four first screws are placed in the first screw connecting hole of the connecting sleeve and fastened to the positioning pin, and the first pull rod hole of the connecting sleeve and the pull rod are clearance-fitted.

[0014] The pull rod is arranged in the second pull rod hole of the base, and the four second screws are placed in the second screw connection holes of the base and fastened on the clamp body.

[0015] Further, the pull rod comprises a push rod clamping hole, a first pin hole and a pull rod limiting part, the upper part of the pull rod is set as the pull rod limiting part, the two end surfaces of the pull rod limiting part are perpendicular to the axis, the lower part of the pull rod is provided with a first pin hole, the middle and lower part of the pull rod is provided with a push rod clamping hole, the first pin hole of the pull rod is matched with the first pin clearance, and the push rod clamping hole and the first pin hole are both perpendicular to the axis;

[0016] The pull rod is placed in the pull rod groove of the connecting rod, the first pin passes through the first pin hole of the pull rod and the first pin groove of the connecting rod, and the shaft is placed in the first clamping groove of the first pin for limiting position with an elastic retaining ring.

[0017] Furthermore, the base includes a first pin hole, a second screw connecting hole, a screw plug hole and a second pull rod hole. The pull rod is placed in the second pull rod hole of the base and is fastened to the clamp body by four second screws placed in the second screw connecting holes of the base. The first pin hole of the base and the pin matching part of the pin are clearance fit, and the second pull rod hole of the base and the pull rod are clearance fit.

[0018] Furthermore, the connecting rod is provided with a second pin hole, a pull rod groove, a first pin groove, a second pin hole, a handle groove and a first spring pin hole, the lower part of one side of the connecting rod is provided with a second pin hole and a first pin groove, the second pin hole and the first pin groove are both through holes or grooves, the middle and lower part of one side of the connecting rod is provided with a pull rod groove, the upper part is provided with a second pin hole and a first spring nail hole, wherein the pull rod groove and the second pin hole are through holes or grooves, the upper part of the connecting rod is provided with a handle groove, the second pin hole and the pin fitting part of the pin are a clearance fit, and the second pin hole and the second pin fitting part of the second pin are a clearance fit.

[0019] Furthermore, the handle is provided with a connecting part, a third pin hole, a second spring nail hole, and a hand-holding part, the connecting part of the handle is placed in the handle groove of the connecting rod, the second pin passes through the second pin hole of the connecting rod and the third pin hole of the handle, the shaft is placed in the second card slot of the second pin with an elastic retaining ring, and the spring nail is screwed into the first spring nail hole of the connecting rod and the second spring nail hole of the handle.

[0020] Furthermore, the pin includes a pin fitting part and a pin threaded end, wherein the pin fitting part of the pin and the second pin hole of the connecting rod and the first pin hole of the base are clearance fit, the pin passes through the first pin hole of the base and the second pin hole of the connecting rod, and is locked by a first nut.

[0021] Furthermore, the first pin includes a first pin mating part and a first slot on both sides of the first pin, the pull rod and the connecting rod are connected through the first pin, the first pin mating part is clearance-fitted with the first pin hole of the pull rod and the first pin slot of the connecting rod, and the shaft is limited by an elastic retaining ring set in the first slot on both sides of the first pin.

[0022] Furthermore, the second pin includes a second pin fitting part and a second slot, the connecting rod and the handle are connected through the second pin, the second pin fitting part is clearance-fitted with the second pin hole of the connecting rod and the third pin hole of the handle, and the shaft is limited by an elastic retaining ring placed in the second slot of the second pin.

[0023] Furthermore, the spring nail comprises a connecting threaded end and a spring hole, the spring hole of the spring nail is screwed into the first spring nail hole of the connecting rod and the second spring nail hole of the handle, and the two ends of the round hook cylindrical spiral tension spring hook the spring hole of the spring nail for fixation.

[0024] Furthermore, the screw plug comprises a threaded portion, a positioning plugging hole, a first push rod hole and a spring cavity, wherein the first push rod hole of the screw plug and the push rod are clearance-fitted, and the positioning plugging hole of the screw plug and the positioning plug fitting part of the positioning plug are interference-fitted.

[0025] Further, the positioning plug comprises a positioning plug fitting portion and a second push rod hole, wherein the positioning plug fitting portion and the positioning plug hole of the screw plug are interference fit, and the second push rod hole of the positioning plug and the push rod are clearance fit.

[0026] Furthermore, the push rod is a limiting piece of the positioning pin, and the push rod is inserted into the push rod clamping hole of the pull rod.

[0027] Furthermore, the small handle comprises a push rod hole and a small handle part, the third push rod hole of the small handle and the push rod are interference fit, wherein the threaded part of the screw plug is screwed into the screw plug hole of the base, the push rod is installed in the first push rod hole of the screw plug, the pressure spring is inserted into the push rod and installed in the spring cavity of the screw plug, the positioning plug is pressed into the positioning plug hole of the screw plug, and the push rod is placed in the third push rod hole of the small handle.

[0028] Compared with the prior art, the utility model has obvious advantages and beneficial effects. It has at least the following advantages:

[0029] 1. The utility model overcomes the defects of the fixed locating pins in the existing fixtures, and provides a rapid centering device of an independent functional unit as the core design and manufacturing. It can be used as a universal standard module. For locating holes of different specifications, only the locating pins need to be designed separately. This rapid centering device has a compact structure, good performance, good parts processing technology, and is easy to implement.

[0030] 2. The utility model has a compact structure, which not only meets the requirements of parts processing and positioning, but also shortens the clamping stroke of the fixture and improves the processing efficiency.

[0031] 3. The utility model adopts a spring structure to limit the position of the positioning pin, which is convenient for loading and unloading parts. The utility model is used as a standard module to improve versatility.

[0032] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1A It is a front view schematic diagram of the utility model.

[0034] Figure 1B It is a side view schematic diagram of the utility model.

[0035] Figure 1C yes Figure 1B AA section view.

[0036] Figure 2A It is a top view schematic diagram of a connecting sleeve of a preferred embodiment of the utility model.

[0037] Figure 2B This is the AA section diagram of 2A

[0038] Figure 3A It is a front view schematic diagram of a pull rod of a preferred embodiment of the utility model.

[0039] Figure 3B It is a cross-sectional schematic diagram of a pull rod of a preferred embodiment of the utility model.

[0040] Figure 4A It is a front view schematic diagram of the base of a preferred embodiment of the utility model.

[0041] Figure 4B It is a right side schematic diagram of the base of a preferred embodiment of the utility model.

[0042] Figure 4C It is a left side schematic diagram of the base of a preferred embodiment of the utility model.

[0043] Figure 4D This is a schematic diagram of the AA section of 4A.

[0044] Figure 5A It is a first side schematic diagram of a connecting rod of a preferred embodiment of the present invention.

[0045] Figure 5B It is a second side schematic diagram of the connecting rod of the preferred embodiment of the present invention.

[0046] Figure 5C It is a third side schematic diagram of the connecting rod of the preferred embodiment of the present invention.

[0047] Figure 5D 4 is a schematic side view of a connecting rod according to a preferred embodiment of the present invention.

[0048] Fig. 6A It is a front view schematic diagram of a handle of a preferred embodiment of the utility model.

[0049] Figure 6B It is a left side schematic diagram of a handle of a preferred embodiment of the utility model.

[0050] Figure 6C It is a right side schematic diagram of a handle of a preferred embodiment of the utility model.

[0051] Fig.6D It is a top view schematic diagram of a handle of a preferred embodiment of the utility model.

[0052] Fig. 7A It is a front view of a connecting rod of a preferred embodiment of the utility model.

[0053] Figure 7B It is a side view schematic diagram of a connecting rod of a preferred embodiment of the utility model.

[0054] Figure 8 It is a schematic diagram of the first pin of a preferred embodiment of the utility model.

[0055] Fig. 9 It is a schematic diagram of the second pin of a preferred embodiment of the utility model.

[0056] Fig. 10A It is a front view schematic diagram of a spring nail according to a preferred embodiment of the utility model.

[0057] Fig. 10B It is a side view schematic diagram of a spring nail according to a preferred embodiment of the utility model.

[0058] Fig. 10C It is a top view schematic diagram of a spring nail according to a preferred embodiment of the utility model.

[0059] Fig.11A It is a front view schematic diagram of a screw plug according to a preferred embodiment of the utility model.

[0060] Fig. 11B It is a side view schematic diagram of a screw plug according to a preferred embodiment of the utility model.

[0061] Fig. 11C This is a schematic diagram of the AA cross-section of 11A.

[0062] Fig.12 It is a schematic diagram of a positioning plug according to a preferred embodiment of the utility model.

[0063] Fig.13 It is a schematic diagram of a push rod according to a preferred embodiment of the utility model.

[0064] Fig.14 It is a schematic diagram of a small handle of a preferred embodiment of the utility model.

[0065] in:

[0066] 1: Connecting sleeve

[0067] 1-1: First screw connection hole 1-2: First tie rod hole

[0068] 2: Pull rod

[0069] 2-1: Push rod clamp hole 2-2: First pin hole

[0070] 2-3: Pull rod limit part

[0071] 3: Base

[0072] 3-1: First pin hole 3-2: Second screw connection hole

[0073] 3-3: Screw plug hole 3-4: Second tie rod hole

[0074] 4: Connecting rod

[0075] 4-1: Second pin hole 4-2: Tie rod slot

[0076] 4-3: First pin slot 4-4: Second pin hole

[0077] 4-5: Handle slot 4-6: First spring pin hole

[0078] 5: Handle

[0079] 5-1: Connecting part 5-2: Third pin hole

[0080] 5-3: Second spring pin 5-4: Handheld part

[0081] 6: Pin

[0082] 6-1: Pin mating part 6-2: Pin thread end

[0083] 7: First pin

[0084] 7-1: First pin fitting portion 7-2: First card slot

[0085] 8: Second pin

[0086] 8-1: Second pin fitting portion 8-2: Second card slot

[0087] 9: Spring nail

[0088] 9-1: Connecting thread end 9-2: Spring hole

[0089] 10: Screw plug

[0090] 10-1: Threaded part 10-2: Positioning plugging hole

[0091] 10-3: First push rod hole 10-4: Spring cavity

[0092] 11: Positioning block

[0093] 11-1: Positioning plug matching part 11-2: Second push rod hole

[0094] 12: Putting

[0095] 13: Small handle

[0096] 13-1: Third push rod hole 13-2: Small handle part

[0097] 14: First screw

[0098] 15: Second screw 16: First nut

[0099] 17: Second nut 18: Circlip for shaft

[0100] 19: Rectangular spring 20: Pressure spring

[0101] 21: Round hook and ring cylindrical helical tension spring

[0102] 22: Positioning pin DETAILED DESCRIPTION

[0103] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of a rapid centering device proposed according to the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0104] See also Figure 1A , Figure 1B and Figure 1C As shown, a quick centering device of a preferred embodiment of the utility model mainly includes: a connecting sleeve 1, a pull rod 2, a base 3, a connecting rod 4, a handle 5, a pin 6, a first pin 7, a second pin 8, a spring pin 9, a screw plug 10, a positioning plug 11, a push rod 12, a small handle 13, a first screw 14, a second screw 15, a first nut 16, a second nut 17, a shaft elastic ring 18, a rectangular spring 19, a pressure spring 20, a round hook ring cylindrical spiral tension spring 21, wherein:

[0105] The pull rod 2 passes through the first pull rod hole 1-2 of the connecting sleeve 1 and is limited at the end face. Four screws 14 are installed in the first screw connection hole 1-1 of the connecting sleeve 1 and fastened to the positioning pin. The rectangular spring 19 is installed in the pull rod 2, and then the pull rod 2 passes through the second pull rod hole 3-4 of the base 3, and is fastened to the clamp body by four second screws 15 installed in the second screw connection hole 3-2 of the base 3. The pull rod 2 is installed in the pull rod groove 4-2 of the connecting rod 4, and then the first pin 7 is passed through the first pin hole 2-2 of the pull rod 2 and the first pin groove 4-3 of the connecting rod 4, and finally the shaft is installed in the first slot 7-2 of the first pin 7 with an elastic retaining ring 18 to limit the position.

[0106] The pin 6 passes through the first pin hole 3 - 1 of the base 3 and the second pin hole 4 - 1 of the connecting rod 4 , and the threaded end 6 - 2 of the pin is locked by a nut 16 .

[0107] The connecting part 5-1 of the handle 5 is inserted into the handle groove 4-5 of the connecting rod 4, and the second pin 8 passes through the connecting part 5-1 of the handle 5 and is inserted into the handle groove 4-5 of the connecting rod 4, and the shaft is used to use an elastic retaining ring 18 to limit the second card groove 8-2 of the second pin 8.

[0108] The connecting threaded end 9 - 1 of the spring nail 9 is screwed into the first spring nail hole 4 - 6 of the connecting rod 4 and the second spring nail hole 5 - 3 of the handle 5 , and the round hook cylindrical helical tension spring 21 is installed into the spring hole 9 - 2 of the spring nail 9 .

[0109] The threaded portion 10-1 of the screw plug 10 is screwed into the screw plug hole 3-3 of the base 3, the push rod 12 is installed in the first push rod hole 10-3 of the screw plug 10, the pressure spring 20 is inserted into the push rod 12 and installed in the spring cavity 10-4 of the screw plug 10, the positioning plug 11 is pressed into the positioning plug hole 10-2 of the screw plug 10, and finally the push rod 12 is installed in the third push rod hole 13-1 of the small handle 13.

[0110] After pulling out the small handle 13, pressing down the handle 5 and then releasing the small handle 13, the push rod 12 is clamped into the push rod clamping hole 2-1 of the pull rod 2, completing the downward movement of the positioning pin 22, and the parts can be disassembled for processing.

[0111] like Figure 2A , Figure 2B The connecting sleeve 1 shown includes a first screw connecting hole 1-1 and a first pull rod 1-2. The central large hole of the connecting sleeve is the first pull rod hole 1-2. Three evenly distributed first screw connecting holes 1-1 are arranged on the circumference of the connecting sleeve 1. The pull rod 2 passes through the first pull rod hole 1-2 of the connecting sleeve 1 and is limited on the end face. Four first screws 14 are installed in the first screw connecting hole 1-1 of the connecting sleeve 1 and are fastened to the positioning pin 22, and the first pull rod hole 1-2 of the connecting sleeve and the pull rod 2 are clearance-fitted.

[0112] like Figure 3A and Figure 3B The pull rod 2 shown includes a push rod clamping hole 2-1, a first pin hole 2-2 and a pull rod limiting part 2-3. The upper part of the pull rod 2 is set 2-3 as a limiting part. The two end faces of the limiting part 2-3 are perpendicular to the axis. The lower part of the pull rod 2 is provided with a first pin hole 2-2. The lower middle part of the pull rod 2 is provided with a push rod clamping hole 2-1. The first pin hole 2-2 of the pull rod 2 is clearance-matched with the first pin 7. The push rod clamping hole 2-1 and the first pin hole 2-2 are both perpendicular to the axis.

[0113] like Figure 4A , Figure 4B , Figure 4C and Figure 4D The base 3 shown includes a first pin hole 3-1, a second screw connection hole 3-2, a screw plug hole 3-3 and a second tie rod hole 3-4. The tie rod 2 is placed in the second tie rod hole 3-4 of the base 3 and fastened to the clamp body by four second screws 15 inserted into the second screw connection hole 3-2 of the base 3. The first pin hole 3-1 of the base 3 and the pin fitting part 6-1 of the pin 6 are clearance fit, and the second tie rod hole 3-4 of the base 3 and the tie rod 2 are clearance fit.

[0114] like Figure 5A , Figure 5B , Figure 5C and Figure 5DThe connecting rod 4 shown is provided with a second pin hole 4-1, a pull rod slot 4-2, a first pin slot 4-3, a second pin hole 4-4, a handle slot 4-5 and a first spring pin hole 4-6. The lower part of one side of the connecting rod 4 is provided with the second pin hole 4-1 and the first pin slot 4-3, and the second pin hole 4-1 and the first pin slot 4-3 are through holes or slots. The middle and lower part of one side of the connecting rod 4 is provided with a pull rod slot 4-2, and the upper part of the connecting rod 4 is provided with a second pin hole 4-4 and a first spring pin hole 4-6, wherein the pull rod slot 4-2 and the second pin hole 4-4 are through holes or slots, and the upper part of the connecting rod 4 is provided with a handle slot 4-5. The second pin hole 4-1 and the pin fitting part 6-1 of the pin 6 are clearance fitting, and the second pin hole 4-4 and the second pin fitting part 8-1 of the second pin 8 are clearance fitting.

[0115] like Fig. 6A , Figure 6B , Figure 6C and Fig.6D The handle 5 shown is provided with a connecting portion 5-1, a third pin hole 5-2, a second spring pin hole 5-3, and a hand-held portion 5-4. The connecting portion 5-1 of the handle 5 is inserted into the handle groove 4-5 of the connecting rod 4, the second pin 8 passes through the second pin hole 4-4 of the connecting rod 4 and the third pin hole 5-2 of the handle 5, the shaft elastic retaining ring 18 is inserted into the second clamping groove 8-2 of the second pin 8 for limiting, and the spring pin 12 is screwed into the first spring pin hole 4-6 of the connecting rod 4 and the second spring pin hole 5-3 of the handle 5.

[0116] like Fig. 7A and Figure 7B The pin 6 shown includes a pin fitting portion 6-1 and a connecting threaded end 6-2, wherein the pin fitting portion 6-1 of the pin 6 and the second pin hole 4-1 of the connecting rod 4 and the first pin hole 3-1 of the base 3 are clearance fit. The pin 6 passes through the first pin hole 3-1 of the base 3 and the second pin hole 4-1 of the connecting rod 4, and is locked by the first nut 16.

[0117] like Figure 8 The first pin 7 shown includes a first pin fitting portion 7-1 and first slots 7-2 located on both sides of the first pin 7. The pull rod 2 and the connecting rod 4 are connected through the first pin 7. The first pin fitting portion 7-1 is clearance-fitted with the first pin hole 2-2 of the pull rod 2 and the first pin slot 4-3 of the connecting rod 4. The shaft is limited by elastic retaining rings 18 installed in the first slots 7-2 on both sides of the first pin 7.

[0118] like Fig. 9 The second pin 8 shown includes a second pin fitting portion 8-1 and a second slot 8-2. The connecting rod 4 and the handle 5 are connected through the second pin 8. The second pin fitting portion 8-1 is clearance-fitted with the second pin hole 4-4 of the connecting rod 4 and the third pin hole 5-2 of the handle 5. The shaft is limited by an elastic retaining ring 18 installed in the second slot 8-2 of the second pin 8.

[0119] like Fig. 10A , Fig. 10B and Fig. 10C The spring nail 9 shown includes a connecting threaded end 9-1 and a spring hole 9-2. The spring hole 9-2 of the spring nail 9 is screwed into the first spring nail hole 4-6 of the connecting rod 4 and the second spring nail hole 5-3 of the handle 5. The two ends of the round hook cylindrical helical tension spring 21 hook the spring hole 9-2 of the spring nail 9 for fixation.

[0120] like Fig.11A , Fig. 11B and Fig. 11C The screw plug 10 shown includes a threaded portion 10-1, a positioning plug hole 10-2, a first push rod hole 10-3, and a spring cavity 10-4, wherein the first push rod hole 10-3 of the screw plug 10 and the push rod 12 are clearance fit, and the positioning plug hole 10-2 of the screw plug 10 and the positioning plug fitting portion 11-1 of the positioning plug 11 are interference fit.

[0121] like Fig.12 The positioning plug 11 shown includes a positioning plug fitting portion 11-1 and a second push rod hole 11-2, wherein the positioning plug fitting portion 11-1 of the positioning plug 11 and the positioning plug hole 10-2 of the screw plug 10 are interference fit, and the second push rod hole 11-2 of the positioning plug 11 and the push rod 12 are clearance fit.

[0122] like Fig.13 The push rod 12 shown is a limit piece for the positioning pin 22. After pulling out the small handle 13, pressing down the handle 5 and then releasing the small handle 13, the push rod 12 is inserted into the push rod clamping hole 2-1 of the pull rod 2, completing the downward movement of the positioning pin 22, and the parts can be disassembled for processing.

[0123] like Fig.14 The small handle 13 shown includes a third push rod hole 13 - 1 and a small handle portion 13 - 2 . The third push rod hole 13 - 1 of the small handle 13 and the push rod 12 are interference fit.

[0124] All parts have good processing properties and are easy to manufacture.

[0125] The working principle of the utility model is as follows: the small handle part 13-2 of the small handle 13 is pulled out to overcome the spring force of the pressure spring 20, so that the push rod 12 is disengaged from the push rod clamping hole 2-1 of the pull rod 2, and the hand-held part 5-4 of the handle 5 is pressed down, and the connecting rod 4 is driven by the second pin 8 of the connecting part, and the connecting rod 4 drives the pull rod 2 through the first pin 7 of the connecting part, overcomes the spring force of the rectangular spring 19, and moves the positioning pin 22 downward, and then releases the small handle part 13-2 of the small handle 13, and the spring force of the pressure spring 20 causes the push rod 12 to be clamped into the push rod clamping hole 2-1 of the pull rod 2, so that the position of the positioning pin 22 is fixed and the upper end surface of the positioning pin 22 is lower than the upper end surface of the clamping body. After loading the processed parts and aligning the positioning holes and positioning pins 22 of the processed parts, pull out the small handle part 13-2 of the small handle 13 to overcome the spring force of the pressure spring 20, so that the push rod 12 is disengaged from the push rod clamping hole 2-1 of the pull rod 2, and release the hand-held part 5-4 of the handle 5. The spring force of the rectangular spring 19 drives the positioning pin 22 to move upward, and the spring force of the round hook ring cylindrical spiral tension spring 21 always keeps the handle 5 in the lifted state, so that the positioning pin 22 reaches the positioning position, realizing rapid centering to complete the positioning of the parts.

[0126] The utility model is mainly used in positioning fixtures in the field of mechanical processing. The utility model overcomes the defects of fixed positioning pins in existing fixtures, and provides a rapid centering device with independent functional units as the core design. It can be used as a universal standard module. For positioning holes of different specifications, only positioning pins need to be designed separately. This rapid centering device has a compact structure, good performance, good part processing technology, and is easy to implement. The compact structure not only meets the requirements of part processing and positioning, but also shortens the clamping stroke of the fixture and improves processing efficiency. The utility model adopts a spring structure to limit the position of the positioning pin, which is convenient for loading and unloading parts. The utility model is used as a standard module to improve versatility.

[0127] The above description is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rapid centering device, characterized in that: The invention comprises a connecting sleeve (1), a pull rod (2), a base (3), a connecting rod (4), a handle (5), a pin (6), a first pin (7), a second pin (8), a spring pin (9), a screw plug (10), a positioning plug (11), a push rod (12), a small handle (13), a first screw (14), a second screw (15), a first nut (16), a second nut (17), a shaft elastic retaining ring (18), a rectangular spring (19), a pressure spring (20) and a round hook ring cylindrical helical tension spring (21), wherein: The pull rod (2) passes through the connecting sleeve (1), the rectangular spring (19) is installed in the pull rod (2), and the pull rod (2) passes through the base (3); the bottom end of the pull rod (2) is installed in one end of the connecting rod (4) and passes through the pull rod (2) and the connecting rod (4) through the first pin (7), and the two ends of the first pin (7) are fixed by the shaft with elastic retaining rings (18); The pin (6) passes through the second pin hole (4-1) of the base (3) and the connecting rod (4), the threaded end (6-2) of the pin is locked by a nut (16), the handle (5) is placed in the connecting rod (4) and the second pin (8) passes through the connecting rod (4) and the handle (5), and the other end of the second pin (8) is installed in a limited position by an elastic retaining ring (18) through the shaft; The round hook ring cylindrical helical tension spring (21) is placed in the spring nail (9), the screw plug (10) is screwed into the base (3), the push rod (12) is placed in the screw plug (10), the pressure spring (20) is inserted into the push rod (12) and installed in the screw plug (10), the positioning plug (11) is placed in the screw plug (10), and the outer end of the push rod (12) is placed in the small handle (13).

2. A rapid centering device according to claim 1, characterized in that: The connecting sleeve (1) comprises a first screw connecting hole (1-1) and a first pull rod hole (1-2); the central large hole of the connecting sleeve is the first pull rod hole (1-2); three evenly distributed first screw connecting holes (1-1) are arranged on the circumference of the connecting sleeve (1); the pull rod (2) passes through the first pull rod hole (1-2) of the connecting sleeve (1) and is limited at the end face; four first screws (14) are placed in the first screw connecting hole (1-1) of the connecting sleeve (1) and are fastened to the positioning pin (22); and the first pull rod hole (1-2) of the connecting sleeve (1) and the pull rod (2) are clearance-matched; The pull rod (2) is arranged in the second pull rod hole (3-4) of the base (3), and the four second screws (15) are placed in the second screw connection holes (3-2) of the base (3) and fastened to the clamp body.

3. A rapid centering device according to claim 1, characterized in that: The pull rod (2) comprises a push rod clamping hole (2-1), a first pin hole (2-2) and a pull rod limiting portion (2-3); the upper portion of the pull rod (2) is arranged as the pull rod limiting portion (2-3); the two end surfaces of the pull rod limiting portion (2-3) are perpendicular to the axis; the lower portion of the pull rod (2) is provided with a first pin hole (2-2); the middle and lower portion of the pull rod (2) is provided with a push rod clamping hole (2-1); the first pin hole (2-2) of the pull rod (2) is clearance-matched with the first pin (7); the push rod clamping hole (2-1) and the first pin hole (2-2) are both perpendicular to the axis; The pull rod (2) is placed in the pull rod groove (4-2) of the connecting rod (4), the first pin (7) passes through the first pin hole (2-2) of the pull rod (2) and the first pin groove (4-3) of the connecting rod (4), and the shaft is placed in the first clamping groove (7-2) of the first pin (7) for limiting.

4. A rapid centering device according to claim 1, characterized in that: The base (3) comprises a first pin hole (3-1), a second screw connection hole (3-2), a screw plug hole (3-3) and a second pull rod hole (3-4); the pull rod (2) is placed in the second pull rod hole (3-4) of the base (3) and is fastened to the clamp body by four second screws (15) placed in the second screw connection hole (3-2) of the base (3); the first pin hole (3-1) of the base (3) and the pin matching part (6-1) of the pin (6) are clearance matched, and the second pull rod hole (3-4) of the base (3) and the pull rod (2) are clearance matched.

5. A rapid centering device according to claim 1, characterized in that: The connecting rod (4) is provided with a second pin hole (4-1), a pull rod groove (4-2), a first pin groove (4-3), a second pin hole (4-4), a handle groove (4-5) and a first spring pin hole (4-6); the lower part of one side of the connecting rod (4) is provided with the second pin hole (4-1) and the first pin groove (4-3); the second pin hole (4-1) and the first pin groove (4-3) are both through holes or grooves; the middle lower part of one side of the connecting rod (4) is provided with a pull rod groove (4-2), a second pin hole (4-4) and a first spring pin hole (4-6) are provided on the upper part of the connecting rod (4), wherein the pull rod groove (4-2) and the second pin hole (4-4) are through holes or grooves, a handle groove (4-5) is provided on the upper part of the connecting rod (4), the second pin hole (4-1) and the pin fitting part (6-1) of the pin (6) are clearance fitting, and the second pin hole (4-4) and the second pin fitting part (8-1) of the second pin (8) are clearance fitting.

6. A rapid centering device according to claim 1, characterized in that: The handle (5) is provided with a connecting portion (5-1), a third pin hole (5-2), a second spring pin hole (5-3), and a hand-holding portion (5-4); the connecting portion (5-1) of the handle (5) is placed in a handle groove (4-5) of a connecting rod (4); the second pin (8) passes through the second pin hole (4-4) of the connecting rod (4) and the third pin hole (5-2) of the handle (5); and the spring pin (9) is screwed into the first spring pin hole (4-6) of the connecting rod (4) and the second spring pin hole (5-3) of the handle (5).

7. A rapid centering device according to claim 1, characterized in that: The pin (6) comprises a pin fitting portion (6-1) and a pin threaded end (6-2), wherein the pin fitting portion (6-1) of the pin (6) and the second pin hole (4-1) of the connecting rod (4) and the first pin hole (3-1) of the base (3) are clearance-fitted, and the pin (6) passes through the first pin hole (3-1) of the base (3) and the second pin hole (4-1) of the connecting rod (4), and is locked by a first nut (16).

8. A rapid centering device according to claim 1, characterized in that: The first pin (7) comprises a first pin fitting portion (7-1) and first retaining grooves (7-2) located on both sides of the first pin (7); the pull rod (2) and the connecting rod (4) are connected via the first pin (7); the first pin fitting portion (7-1) is clearance-fitted with a first pin hole (2-2) of the pull rod (2) and a first pin groove (4-3) of the connecting rod (4); and an elastic retaining ring (18) for the shaft is arranged in the first retaining grooves (7-2) located on both sides of the first pin (7) for limiting position.

9. A rapid centering device according to claim 1, characterized in that: The second pin (8) comprises a second pin fitting portion (8-1) and a second clamping groove (8-2); the connecting rod (4) and the handle (5) are connected via the second pin (8); the second pin fitting portion (8-1) is clearance-fitted with a second pin hole (4-4) of the connecting rod (4) and a third pin hole (5-2) of the handle (5); and an elastic retaining ring (18) for the shaft is placed in the second clamping groove (8-2) of the second pin (8) for limiting position.

10. A rapid centering device according to claim 1, characterized in that: The spring pin (9) comprises a connecting threaded end (9-1) and a spring hole (9-2). The spring hole (9-2) of the spring pin (9) is screwed into a first spring pin hole (4-6) of a connecting rod (4) and a second spring pin hole (5-3) of a handle (5). The two ends of a circular hook-ring cylindrical helical tension spring (21) are hooked on the spring hole (9-2) of the spring pin (9) for fixing.

11. A rapid centering device according to claim 1, characterized in that: The screw plug (10) comprises a threaded portion (10-1), a positioning plug hole (10-2), a first push rod hole (10-3) and a spring cavity (10-4), wherein the first push rod hole (10-3) of the screw plug (10) and the push rod (12) are clearance-fitted, and the positioning plug hole (10-2) of the screw plug (10) and the positioning plug fitting portion (11-1) of the positioning plug (11) are interference-fitted.

12. A rapid centering device according to claim 1, characterized in that: The positioning plug (11) comprises a positioning plug fitting portion (11-1) and a second push rod hole (11-2), wherein the positioning plug fitting portion (11-1) and the positioning plug hole (10-2) of the screw plug (10) are interference fit, and the second push rod hole (11-2) of the positioning plug (11) and the push rod (12) are clearance fit.

13. A rapid centering device according to claim 1, characterized in that: The push rod (12) is a limiting piece of the positioning pin, and the push rod (12) is inserted into the push rod clamping hole (2-1) of the pull rod (2).

14. A rapid centering device according to claim 1, characterized in that: The small handle (13) comprises a third push rod hole (13-1) and a small handle portion (13-2); the third push rod hole (13-1) of the small handle (13) and the push rod (12) are interference fit, wherein the threaded portion (10-1) of the screw plug (10) is screwed into the screw plug hole (3-3) of the base (3); the push rod (12) is installed in the first push rod hole (10-3) of the screw plug (10); the pressure spring (20) is inserted into the push rod (12) and installed in the spring cavity (10-4) of the screw plug (10); the positioning plug (11) is pressed into the positioning plug hole (10-2) of the screw plug (10); and the push rod (12) is placed in the third push rod hole (13-1) of the small handle (13).

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