CN201783835U - Eccentric positioning and clamping fixture - Google Patents

Eccentric positioning and clamping fixture Download PDF

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Publication number
CN201783835U
CN201783835U CN2010202749619U CN201020274961U CN201783835U CN 201783835 U CN201783835 U CN 201783835U CN 2010202749619 U CN2010202749619 U CN 2010202749619U CN 201020274961 U CN201020274961 U CN 201020274961U CN 201783835 U CN201783835 U CN 201783835U
Authority
CN
China
Prior art keywords
eccentric
base
pressing plate
pin
eccentric shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202749619U
Other languages
Chinese (zh)
Inventor
杜辰
张钧
安明
张升威
邵将波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Zhongma Junteng Precision Machinery Manufacture Co Ltd
Original Assignee
Tianjin Zhongma Junteng Precision Machinery Manufacture Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Zhongma Junteng Precision Machinery Manufacture Co Ltd filed Critical Tianjin Zhongma Junteng Precision Machinery Manufacture Co Ltd
Priority to CN2010202749619U priority Critical patent/CN201783835U/en
Application granted granted Critical
Publication of CN201783835U publication Critical patent/CN201783835U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an eccentric positioning and clamping fixture, which comprises a base, pressure plates and positioning pins. The eccentric positioning and clamping fixture is characterized in that square holes are arranged on the base and connected with the pressure plates in a sliding manner, each pressure plate consists of a pressure plate body and a pressure pin, the pressure pin is arranged at the upper end of the pressure plate body, a pin hole at the lower end of each pressure plate is connected with a pin shaft, two pressure plates are connected to two ends of one pin shaft respectively, an eccentric device is arranged on the base and consists of an eccentric shaft rack, an eccentric shaft and a swing block, the eccentric shaft rack is fixed onto the base and supports the eccentric shaft, an eccentric circle of the eccentric shaft is in clearance fit with a central hole of the swing block, and two ends of the swing block contact with the external circumferences of the pin shafts. The eccentric positioning and clamping fixture has the advantages that clamping force is generated by the eccentric structure, the four pressure plates can move vertically at the same time by aid of the eccentric swing block structure to tightly press two workpieces, by adopting the eccentric tooling, the time for mounting and demounting workpieces is shortened by three quarters, and on the yield of 200000 per year, work time can be saved by about 150000 minutes per year, so that the economic benefit is evident.

Description

Centering type location and clamping jig
Technical field
The utility model belongs to the machined field, relates in particular to a kind ofly to be applied to profile and cutting output is less centering type less to the clamping force of workpiece, bigger part in batches location and clamp jig.
Background technology
In machining process, run into the processing part that profile is little or thin, cutting output is little again through regular meeting.During common above-mentioned part processing the clamping force of workpiece is required little, but very big in batches, then need efficiency to want high.Sewing machine component as shown in Figure 7----cloth-feeding plate, this part is the sheet-type part, and wherein two narrow grooves are the positions that need processing, and two through holes are locating hole.Production and processing has at present adopted conventional presser type jig to process.Its structure is: the main jig that constitutes by base and pressing plate, on base, be provided with the alignment pin of corresponding cloth-feeding plate locating hole, and the cloth-feeding plate both sides are provided with pressing plate.During use,
Part clamps with the pressing plate of its both sides one by one.During workpiece loading and unloading, need screw or release bolt for four times.Produce in enormous quantities, this inefficient clamping mode has a strong impact on to be produced the duration.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, be widely used in the centering type location of drilling machine, milling machine or machining center and clamp jig and provide a kind of, it possesses the function that once-through operation two block pressur plates compressed or loosened workpiece simultaneously, has significantly improved operating efficiency.
The utility model for achieving the above object, by the following technical solutions: a kind of centering type location and clamping jig, comprise base, pressing plate and alignment pin, it is characterized in that: described base is provided with square opening, described base square opening and pressing plate are slidingly connected, described pressing plate is made of pressing plate body and presser feet, presser feet places pressing plate body upper end, the pin-and-hole of pressing plate lower end is connected with bearing pin, described bearing pin two ends connect a block pressur plate respectively, described base is provided with eccentric, described eccentric is by eccentric pedestal, eccentric shaft and centering block constitute, and described eccentric pedestal is fixed on the base, and eccentric pedestal is supported with eccentric shaft, the off-centre operation of described eccentric shaft becomes matched in clearance with the centering block centre bore, and the outer round surface of centering block two ends and bearing pin touches.
Described pressing plate body sidewall is provided with groove, and described groove is built-in with spring, and the spring upper end withstands on the pressing plate,
Its lower end withstands on the fixing spring base of bearing.
Beneficial effect: adopt eccentric structure to produce clamping force.By eccentric, centering block structure four block pressur plates are moved up and down simultaneously, compress two workpiece, simple in structure.After adopting eccentric frock, the time of workpiece loading and unloading has shortened 3/4, to produce 200000 per year, can save clock very much in man-hour about 15 every year, remarkable in economical benefits.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is an A-A profile among Fig. 1;
Fig. 4 is the B-B profile of Fig. 1;
Fig. 5 is the structural representation of eccentric shaft among Fig. 1;
Fig. 6 is the structural representation of centering block among Fig. 1;
Fig. 7 is the structural representation of workpiece among Fig. 1.
Among the figure: 1, pressing plate, 1-1, pressing plate body, 1-2, presser feet, 1-3, pin-and-hole, 1-4, groove, 2, workpiece, 3, base, 3-1, square opening, 4, alignment pin, 5, spring, 6, spring base, 7, centering block, 7-1, centre bore, 8, bearing pin, 9, eccentric shaft, 10, eccentric pedestal, 11, off-centre operation.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in the figure, a kind of centering type location and clamping jig comprise base 3, pressing plate 1 and alignment pin 4, and described base is provided with square opening 3-1, and the base cross section is the sine square waveform shape with Wave crest and wave trough.Described base square opening and pressing plate are slidingly connected, described pressing plate is made of pressing plate body 1-1 and presser feet 1-2, presser feet places pressing plate body upper end, the pin-and-hole 1-3 of pressing plate lower end is connected with bearing pin 8, described bearing pin two ends connect a block pressur plate respectively, described base is provided with eccentric, described eccentric is made of eccentric pedestal 10, eccentric shaft 9 and centering block 7, described eccentric pedestal is fixed on the base, eccentric pedestal is supported with eccentric shaft, the off-centre operation 11 of described eccentric shaft becomes matched in clearance with centering block centre bore 7-1, and the outer round surface of centering block two ends and bearing pin touches.Described pressing plate body sidewall is provided with groove 1-4, and described groove is built-in with spring 5, and the spring upper end withstands on the pressing plate, and its lower end withstands on the fixing spring base 6 of bearing.
Install and operation principle:
Alignment pin is installed on the base, be used to locate the square opening that workpiece to be processed 2 pressing plates pass base, its upper end is used for workpiece pressing, the lower end is connected with bearing pin, two ends of bearing pin respectively connect a block pressur plate, when bearing pin moves downward, the pressing plate that drives two ends moves downward workpiece pressing, and spring is placed in the groove of pressing plate, and the upper end withstands on the pressing plate, the lower end withstands on the spring base, spring base is fixed on the bearing, and when the pressing plate that drives two ends when bearing pin moved downward, spring was compressed, when bearing pin moved upward, spring resetted pressing plate.At this moment the operator can take off the workpiece that processes.Eccentric pedestal is fixed on the base, two eccentric pedestals can support eccentric shaft effectively, centering block is enclosed within on the off-centre operation of eccentric shaft, becomes matched in clearance with off-centre operation, and two ends of centering block contact with the outer surface of bearing pin, under shown position, the eccentric shaft that turns clockwise, the centering block that is enclosed within on the off-centre operation moves downward, and the compressing bearing pin moves downward, be rotated counterclockwise eccentric shaft, centering block moves upward.
Be rotated counterclockwise eccentric shaft, centering block moves upward, and spring upwards resets pressing plate, lays workpiece (alignment pin location), the eccentric shaft that turns clockwise, centering block moves downward, and forces the bearing pin pressing plate to move downward workpiece pressing, completion of processing is rotated counterclockwise eccentric shaft, takes off workpiece.Carry out next one circulation.
Accompanying drawing is depicted as an eccentric shaft, also several eccentric shafts can be installed on a base.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims (2)

1. jig is located and clamped to a centering type, comprise base, pressing plate and alignment pin, it is characterized in that: described base is provided with square opening, described base square opening and pressing plate are slidingly connected, described pressing plate is made of pressing plate body and presser feet, presser feet places pressing plate body upper end, the pin-and-hole of pressing plate lower end is connected with bearing pin, described bearing pin two ends connect a block pressur plate respectively, and described base is provided with eccentric, and described eccentric is by eccentric pedestal, eccentric shaft and centering block constitute, described eccentric pedestal is fixed on the base, eccentric pedestal is supported with eccentric shaft, and the off-centre operation of described eccentric shaft becomes matched in clearance with the centering block centre bore, and the outer round surface of centering block two ends and bearing pin touches.
2. centering type according to claim 1 location and clamping jig, it is characterized in that: described pressing plate body sidewall is provided with groove, and described groove is built-in with spring, and the spring upper end withstands on the pressing plate, and its lower end withstands on the fixing spring base of bearing.
CN2010202749619U 2010-07-29 2010-07-29 Eccentric positioning and clamping fixture Expired - Fee Related CN201783835U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202749619U CN201783835U (en) 2010-07-29 2010-07-29 Eccentric positioning and clamping fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202749619U CN201783835U (en) 2010-07-29 2010-07-29 Eccentric positioning and clamping fixture

Publications (1)

Publication Number Publication Date
CN201783835U true CN201783835U (en) 2011-04-06

Family

ID=43815814

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202749619U Expired - Fee Related CN201783835U (en) 2010-07-29 2010-07-29 Eccentric positioning and clamping fixture

Country Status (1)

Country Link
CN (1) CN201783835U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699721A (en) * 2012-06-25 2012-10-03 天津市中马骏腾精密机械制造有限公司 Machining fixture of free compression element for industrial sewing machine
CN102825514A (en) * 2011-06-18 2012-12-19 韩德庆 Multi-workpiece eccentric shaft compacting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102825514A (en) * 2011-06-18 2012-12-19 韩德庆 Multi-workpiece eccentric shaft compacting device
CN102699721A (en) * 2012-06-25 2012-10-03 天津市中马骏腾精密机械制造有限公司 Machining fixture of free compression element for industrial sewing machine

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110406

Termination date: 20150729