CN204094520U - The special fixture of machining large carriage saddle part - Google Patents

Abstract

The utility model relates to a kind of special fixture of machining large carriage saddle part, be characterised in that: comprise chuck body, for multiple screw of being fixedly connected with part to be processed by fixture and multiple straight pin, voussoir, chuck body is provided with positioning center hole and locating hole, at chuck body positioning center hole and locating hole place, centre of location check rod and location check rod is housed; Chuck body is shaped with the U-shaped opening being convenient to processing parts dead eye, the groove for the pressing plate that is installed is shaped with at chuck body circumference place, chuck body one side is shaped with the upper datum level coordinated with carriage saddle part, and another side is shaped with the lower datum level coordinated with machining tool.Advantage is: rational in infrastructure, easy to operate, not only can enhance productivity, ensure machining accuracy, but also can cut down finished cost, can be gully stand part on stock-removing machine, process the process means and processing method that provide advanced person, be especially applicable to the batch production of gully stand part.

Description

The special fixture of machining large carriage saddle part

Technical field

The utility model belongs to metal cutting machinery technical field, particularly relates to a kind of special fixture of machining large carriage saddle part.

Background technology

Carriage saddle part is the important component part of whole gear cutting machine, and its quality directly affects the precision of whole lathe, and tool-post structure, power transmission shaft, cradle drum, worm gear and workbench etc. are linked together by carriage saddle by lathe, realize multi-functional processing.Because above-mentioned carriage saddle design of part is special, be namely made up of upper and lower two parts, and required precision is very high, all by single piece required precision, this just brings very large difficulty to processing, therefore needs to reach processing object by special fixture, to meet the designing requirement of drawing.Because two parts up and down of part attach together together, in requirement, the axiality franchise value of lower two centre bores can not be greater than 0.01mm, each power transmission shaft centerline hole degree of being parallel to each other franchise value can not be greater than 0.01mm, mutual perpendicularity franchise value can not be greater than 0.01mm equally, the circle of the focus of power transmission shaft centerline hole and dead eye center line must be positioned at diameter to be tolerance value be 0.01mm, to guarantee the accuracy of mesh on each transmission axis hole and dead eye between each gear, and on carriage saddle, lower two dovetail grooves require to be parallel to each other, its depth of parallelism franchise value can not be greater than 0.01mm, location cylindrical and positioning center hole axiality franchise value can not be greater than 0.01mm, on, lower location end face requires to be parallel to each other, its depth of parallelism franchise value controls within 0.01mm, to the symmetry of center line within 0.02mm, this just needs the precision of fixture high, and various functions can meet the requirement of part to be processed, to reach processing object.So adopt traditional processing method cannot ensure precision and the quality of part to be processed, thus make part to be processed reach designing requirement, so not only seriously constrain manufacturing schedule and efficiency, but also be difficult to the batch production adapting to gully stand part.

Summary of the invention

The utility model provides one can increase substantially gully stand part processing precision and efficiency for solving in known technology the technical problem that exists, cut down finished cost, easy to operate and the special fixture of machining large carriage saddle part produced in batches can be applicable to.

The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:

The special fixture of machining large carriage saddle part, it is characterized in that: comprise chuck body, for multiple screw of being fixedly connected with part to be processed by fixture and multiple straight pin, voussoir, described chuck body is provided with positioning center hole and locating hole, at described chuck body positioning center hole and locating hole place, centre of location check rod and location check rod is housed; Described chuck body is shaped with the U-shaped opening being convenient to processing parts dead eye, the groove for the pressing plate that is installed is shaped with at described chuck body circumference place, described chuck body one side is shaped with the upper datum level coordinated with carriage saddle part, and another side is shaped with the lower datum level coordinated with machining tool.

The utility model can also adopt following technical scheme:

In described chuck body, datum level and lower datum level are the face of being parallel to each other, and its depth of parallelism franchise value is less than 0.008mm.

The upper datum level of described chuck body is mutually vertical with centre of location centerline hole, and described lower datum level is mutually vertical with centre of location centerline hole, and its perpendicularity franchise value is all less than 0.008mm.

The angle of described voussoir and the angle required by part to be processed match.

The advantage that the utility model has and good effect are: because the utility model adopts technique scheme, namely this fixture is according to the profile feature of part to be processed and required precision, the planform of this fixture, size and precision is determined by measurements and calculations, and in chuck body, be shaped with positioning center hole, datum level and check rod, utilize the position of datum level and check rod determination part to be processed, to facilitate the processing of part to be processed, ensure machining accuracy.Because this jig Design is reasonable, easy to operate, and applicable multiple stock-removing machine uses, so adopt this fixture machining large carriage saddle part not only can enhance productivity, ensure machining accuracy, but also can cut down finished cost, shorten the process-cycle, and can be gully stand part and process on stock-removing machine advanced process means and processing method are provided, be especially applicable to the batch production of gully stand part.

Accompanying drawing explanation

Fig. 1 is the utility model chuck body structural representation;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is Fig. 1 right view;

Fig. 4 is part to be processed the first half structural representation;

Fig. 5 is part to be processed the latter half structural representation;

Fig. 6 is that part to be processed attaches together rear structural representation;

Fig. 7 is Fig. 6 left view;

Fig. 8 is the utility model using state schematic diagram;

Fig. 9 is the left view of Fig. 8;

Figure 10 is the B-B sectional view of Fig. 9.

In figure: 1, chuck body; 2, repeated hole is played; 3, locating hole; 4, positioning center hole; 5, upper datum level; 6, lower datum level; 7, centre bore A; 8, upper left side; 9, upper dovetail groove; 10, upper right side; 11, upper driving axis hole; 12, lower left side; 13, underdrive axis hole; 14, centre bore B; 15, lower right side; 16, lower dovetail groove; 17, upper location cylindrical; 18, center line; 19, lower location cylindrical; 20, upper location end face; 21, lower location end face; 22, dead eye A; 23, dead eye B; 24, ramp; 25, lower inclined plane; 26, dead eye C; 27, dead eye D; 28, cylindrical pin with internal thread; 29, SOC.HD. cap screw; 30, voussoir; 31, centre of location check rod; 32, check rod is located; 33, U-shaped opening; 34, groove; 100, the part to be processed first half; 200, part to be processed Lower Half; 300, stock-removing machine workbench.

Detailed description of the invention

For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Refer to Fig. 1-Fig. 3, the special fixture of machining large carriage saddle part, comprise chuck body 1, multiple SOC.HD. cap screws 29, multiple cylindrical pin with internal thread 28 and voussoir 30 for being fixedly connected with part to be processed by fixture, described chuck body is provided with positioning center hole 4, locating hole 3 and plays repeated hole 2, at described chuck body positioning center hole and locating hole place, centre of location check rod 31 and location check rod 32 is housed.Described chuck body is shaped with the U-shaped opening 33 being convenient to processing parts dead eye, the groove 34 for the pressing plate that is installed is shaped with at described chuck body circumference place, described chuck body one side is shaped with the upper datum level 5 coordinated with carriage saddle part, and another side is shaped with the lower datum level 6 coordinated with machining tool.

In the present embodiment, in described chuck body, datum level 5 and lower datum level 6 are the face of being parallel to each other, and its depth of parallelism franchise value is less than 0.008mm.

In the present embodiment, the upper datum level of described chuck body is mutually vertical with centre of location centerline hole, and described lower datum level is mutually vertical with centre of location centerline hole, and its perpendicularity franchise value is all less than 0.008mm.

In the present embodiment, the angle of described voussoir 30 and the angle required by part to be processed match, namely described voussoir 30 inclined-plane angle and between part to be processed ramp 24 and lower inclined plane 25 angle match.

In the present embodiment, the flatness franchise value of described upper datum level 5 and lower datum level 6 is all less than 0.01mm.

In the present embodiment, on the same line, its degree of error is not more than 0.01mm to the center line of described positioning center hole 4 and locating hole 3.

Because datum level in chuck body 5 and lower datum level 6 are the face of being parallel to each other, and depth of parallelism franchise value controls within 0.008mm, its flatness franchise value controls within 0.01mm, mutually vertical with positioning center hole 4, its perpendicularity franchise value controls within 0.008mm, and positioning center hole 4 must keep on the same line with locating hole 3 center line, its error amount controls within 0.01mm, this ensures that there every precision of fixture and the uniformity of part to be processed, accumulated error value is dropped to minimum, ensure that precision and the quality of part to be processed.Because chuck body is shaped with U-shaped opening, and be shaped with groove at chuck body circumferential part, so just facilitate the processing of dead eye A 22, dead eye B 23, dead eye C 26 and dead eye D 27 and the clamping of whole frock.

Operation principle of the present utility model is:

Refer to Fig. 4-Figure 10, add man-hour, the lathe center of first first centering machining tool-vertical lathe, then datum level under fixture 6 is placed on platen 300, centering centre of location check rod 31, make it to be consistent with machining tool center, by the upper location cylindrical 17 of vertical lathe processing part to be processed 100 and 200, lower location cylindrical 19, upper right side 10, lower right side 5, make, lower location cylindrical is in same circumference, on, lower right side is in same plane, and on, lower right side and upper, lower location cylindrical central axis degree franchise value is not more than 0.01mm, then part to be processed and fixture are not torn open, lower datum level 6 is placed on machining tool-metal-planing machine, by centering centre of location check rod 31 and location check rod 32 and on, lower right side 10 and 15, dovetail groove 9 in processing, in lower dovetail groove 16 and again processing, lower right side 10 and 15, to reach drawing requirement.Part to be processed and fixture are not still torn open below, with the upper and lower right-hand member 10 and 15 of part to be processed for basal plane, by the upper and lower dovetail groove 9 and 16 of centering within 0.01mm, by processing center machine tool machining shaft bearing bore A22, dead eye B23, dead eye C26, dead eye D27, upper driving axis hole 11, underdrive axis hole 13, to reach Design Requirement Drawing.

Because this clamp precision is high, reasonable in design, the error of each relative dimensions also will to minimum, and then the uniformity that can ensure between part to be processed upper part 100 and the latter half 200, make it into be integrated and process, not only can ensure the uniformity of part to be processed centre bore 7 and 14, also can ensure that between dovetail groove 9 and lower dovetail groove 16, parallelism error is not more than 0.01mm, upper right side 10 and lower right side 15 are in same plane, the uniformity of upper left side 8 and lower left side 12, and control within 0.01mm with center line 18 error of perpendicularity, on, lower location cylindrical 17 and 19 is in same circumference, on, lower surface 10 and 15 is in same plane, thus make the part processed meet designing requirement, ensure precision and the quality of part to be processed.

The embodiment that the utility model accompanying drawing describes is exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.

Claims (4)

1. the special fixture of a machining large carriage saddle part, it is characterized in that: comprise chuck body, for multiple screw of being fixedly connected with part to be processed by fixture and multiple straight pin, voussoir, described chuck body is provided with positioning center hole and locating hole, at described chuck body positioning center hole and locating hole place, centre of location check rod and location check rod is housed; Described chuck body is shaped with the U-shaped opening being convenient to processing parts dead eye, the groove for the pressing plate that is installed is shaped with at described chuck body circumference place, described chuck body one side is shaped with the upper datum level coordinated with carriage saddle part, and another side is shaped with the lower datum level coordinated with machining tool.

2. the special fixture of machining large carriage saddle part according to claim 1, is characterized in that: in described chuck body, datum level and lower datum level are the face of being parallel to each other, and its depth of parallelism franchise value is less than 0.008mm.

3. the special fixture of machining large carriage saddle part according to claim 1, it is characterized in that: the upper datum level of described chuck body is mutually vertical with centre of location centerline hole, described lower datum level is mutually vertical with centre of location centerline hole, and its perpendicularity franchise value is less than 0.008mm.

4. the special fixture of machining large carriage saddle part according to claim 1, is characterized in that: the angle of described voussoir and the angle required by part to be processed match.