CN210773745U - Engineering machine tool gearbox shifting fork checking fixture - Google Patents

Abstract

The utility model discloses an utensil is examined to engineering machine tool gearbox shift fork, it includes base, fork handle positioning mechanism and jaw detection mechanism, and the fork handle of waiting to detect the shift fork passes through the fork handle positioning mechanism to be fixed on the base, jaw detection mechanism is including measuring post, lower detection barrel and last detection barrel, it is perpendicular with the upper and lower plane of jaw in the C type jaw of shift fork and to measure post lower extreme and base fixed connection to measure the post, down detection barrel and last detection barrel overlap in proper order on measuring the post and with measurement post sliding contact, one side of lower detection barrel is equipped with the lower detection arm corresponding with the lower plane of jaw, and one side of going up detection barrel is equipped with the last detection arm corresponding with the upper plane of jaw. The utility model discloses an interior pore pair work piece on the work piece is fixed a position, has design benefit, easy operation, positioning accuracy height, advantage such as fast. The detection difficulty of the shifting fork is greatly reduced, the detection efficiency is greatly improved, and the quality stability of the shifting fork is ensured.

Description

Engineering machine tool gearbox shifting fork checking fixture

Technical Field

The utility model relates to an examine utensil for detecting used shift fork of engineering machine tool gearbox belongs to and detects technical field.

Background

The shifting fork is an important part of the engineering machinery gearbox. FIG. 1 is a schematic structural diagram of a shifting fork, which belongs to a forged piece and comprises a fork handle 7-2 and a C-shaped fork head 7-1, wherein the end part of the fork handle 7-2 is provided with a reference hole 7-3 and a screw hole 7-4, the axis of the reference hole 7-3 is perpendicular to the axis of the screw hole 7-4, the perpendicularity of the plane where the fork head 7-1 is located relative to the axis of the reference hole 7-3 is required to be less than or equal to 0.03, the position degree of the screw hole 7-4 relative to the reference hole 7-3 is required to be less than or equal to 0.1, and the axis of the screw hole 7-4. The detection difficulty of the part is higher, and the instability of the quality of the part is increased because no special detection tool exists at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engineering machine tool gearbox shift fork is examined utensil to prior art's drawback to improve shift fork production quality's stability.

The problem of the utility model is realized with following technical scheme:

the utility model provides an engineering machine tool gearbox shift fork examines utensil, includes base, fork handle positioning mechanism and jaw detection mechanism in the constitution, waits to detect the fork handle of shift fork and fixes on the base through fork handle positioning mechanism, jaw detection mechanism is including measuring post, lower detection cylinder and last detection cylinder, the measuring post is located the C type jaw of shift fork and is perpendicular with the upper and lower plane of jaw, measures post lower extreme and base fixed connection, lower detection cylinder and last detection cylinder cover in proper order on measuring the post and with measuring post sliding contact, one side of lower detection cylinder is equipped with the lower detection arm corresponding with the lower plane of jaw, and one side of going up the detection cylinder is equipped with the upper detection arm corresponding with the upper plane of jaw.

The engineering machinery gearbox shifting fork checking fixture is characterized in that the fork handle positioning mechanism comprises a mandrel, a compression screw, a tensioning strip, a clamping snap ring, a pin seat and a fastening screw, the lower end of the mandrel is fixedly connected with the base, the side wall of the mandrel is provided with a plurality of axial sliding grooves with shallow lower parts and deep upper parts, each axial sliding groove is internally provided with a tensioning strip, the inner side of the upper end of the tensioning strip is provided with a lifting clamping groove, the compression screw is coaxial with the mandrel and is screwed into a threaded hole at the upper end of the mandrel, a chuck matched with a lifting clamping groove at the upper end of the tension strip is arranged on the compression screw, the clamping ring is sleeved outside the tension strip and embedded in an annular groove on the side wall of the mandrel, a fork handle of the shifting fork to be detected is sleeved outside the mandrel and the tension strip through a reference hole of the fork handle, the pin seat is fixed on the base, and the fastening screw is positioned in the through hole in the pin seat and screwed into the screw hole in the fork handle of the shifting fork.

According to the engineering machinery gearbox shifting fork detection tool, the fork head detection mechanism further comprises a measurement sleeve, the measurement sleeve is sleeved on the measurement column, and the outer cylindrical surface of the measurement sleeve corresponds to the inner side surface of the C-shaped fork head of the shifting fork to be detected.

According to the engineering machinery gearbox shifting fork detection tool, the number of the axial sliding grooves in the side wall of the mandrel is three, and the axial sliding grooves are uniformly distributed around the axis of the mandrel.

According to the engineering machinery gearbox shifting fork inspection device, the measuring column and the mandrel are connected with the base through the nut, and the pin boss is connected with the base through the cylindrical pin and the bolt.

The utility model discloses an interior pore pair work piece on the work piece is fixed a position, has design benefit, easy operation, and positioning accuracy is high, advantage such as fast has solved the difficult problem that detects of shift fork quality well. The detection difficulty of the shifting fork is greatly reduced, the detection efficiency is greatly improved, and the quality stability of the shifting fork is ensured.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a fork;

FIG. 2 is a schematic view of the fork on the present invention;

FIG. 3 is a schematic structural view of a base, wherein FIG. 3 (a) is a front view and FIG. 3 (b) is a sectional view taken along line A-A;

FIG. 4 is a schematic view of the construction of the binding screw;

FIG. 5 is a schematic structural view of the mandrel, wherein FIG. 5 (a) is a front view and FIG. 5 (B) is a sectional view taken along line B-B;

FIG. 6 is a schematic view of a compression screw;

FIG. 7 is a schematic structural view of the measuring sleeve, wherein FIG. 7 (a) is a front view and FIG. 7 (b) is a left side view;

FIG. 8 is a schematic view of the structure of a measuring column;

fig. 9 is a schematic structural view of the tension bar, in which fig. 9 (a) is a front view, fig. 9 (b) is a left side view, fig. 9 (C) is a C-C sectional view, and fig. 9 (D) is a D-D sectional view;

FIG. 10 is a schematic structural view of a lower cartridge, in which FIG. 10 (a) is a front view and FIG. 10 (b) is a plan view;

fig. 11 is a schematic structural view of the upper detection cylinder, in which fig. 11 (a) is a front view and fig. 11 (b) is a plan view.

The figures are labeled as follows: 1. a base; 1-1, pin holes; 1-2, bolt holes; 1-3, a mandrel hole; 1-4, measuring column holes; 2. a pin boss; 3. fastening screws; 4. a mandrel; 4-1, axial sliding groove; 4-2, an annular groove; 5. a compression screw; 5-1, chuck; 6. clamping the snap ring; 7. a shift fork (workpiece); 7-1, a fork head; 7-2, a fork handle; 7-3, reference holes; 7-4, screw holes; 8. a measuring sleeve; 9. a measuring column; 10. tensioning the strip; 10-1, a lifting clamping groove; 10-2, clamping the clamping groove; 11. a lower detection cylinder; 11-1, a lower detection arm; 12. an upper detection cylinder 12-1 and an upper detection arm.

Detailed Description

Referring to fig. 2 to 11, the utility model mainly comprises a base 1, a fork handle positioning mechanism and a fork head detection mechanism, wherein the fork handle positioning mechanism mainly comprises a pin boss 2, a fastening screw 3, a mandrel 4, a compression screw 5, a clamping snap ring 6 and a tension strip 10; the fork head detection mechanism mainly comprises a measuring sleeve 8, a measuring column 9, a lower detection barrel 11 and an upper detection barrel 12.

The pin boss 2 is mounted on the base 1 by two cylindrical pins and 2 bolts and two washers. 3 tensioning strips 10 are arranged on the mandrel 4 through 2 clamping snap rings 6, lifting clamping grooves 10-1 on the tensioning strips 10 are matched with chucks 5-1 on the compression screws 5, and the tensioning strips 10 are driven by the compression screws 5 to move up and down. The mandrel 4 is connected with the base 1 through a nut at the lower end.

The lower end of the measuring column 9 is fixed on the base 1 through a nut, the measuring sleeve 8 is sleeved on the measuring column 9 when the inner side surface of the fork head of the shifting fork is detected, and the lower detecting cylinder 11 and the upper detecting cylinder 12 are sleeved on the measuring column 9 when the upper and lower planes of the fork head of the shifting fork are detected.

The utility model discloses a use method: firstly, a workpiece is positioned, the lower end of a mandrel 4 is fixed on a base 1 through a nut, a compression screw 5 is screwed into a threaded hole at the upper end of the mandrel 4, then a tensioning strip 10 is placed in an axial sliding groove 4-1 on the mandrel 4, a lifting clamping groove 10-1 of the tensioning strip 10 is matched with a chuck 5-1 on the compression screw 5, a clamping ring 6 is clamped in an annular groove 4-2 on the mandrel 4, and the tensioning strip 10 can ascend or descend by screwing the compression screw 5. The pin boss 2 is connected with the base 1 by two cylindrical pins and two bolts and two washers, and the fastening screw 3 is mounted on the pin boss 2. Then, a workpiece is installed, a mandrel 4 provided with the tensioning strip 10 is inserted into a reference hole 7-3 on the workpiece, a screw hole 7-4 on the workpiece is aligned with a fastening screw 3 on a pin seat 2, the fastening screw 3 is screwed into the screw hole 7-4 of the workpiece (the axis of the fastening screw 3 forms an included angle of 30 degrees with the connecting line of two ends of a C-shaped fork head of a shifting fork), and then a compression screw 5 is screwed to enable the tensioning strip 10 to move downwards, so that the workpiece is fastened and cannot move. Then, the workpiece is measured, the measuring column 9 is fixed on the base 1, the lower detection cylinder 11 is sleeved on the measuring column 9 before the workpiece is fastened, the lower end of the lower detection cylinder 11 is in contact with the upper plane of the base 1, and after the workpiece is fastened, the upper detection cylinder 12 is sleeved on the measuring column 9. The lower detection barrel 11 and the upper detection barrel 12 are rotated by 360 degrees, the distance between the lower detection arm 11-1 of the lower detection barrel 11 and the upper detection arm 12-1 of the upper detection barrel 12 and the lower plane and the upper plane of the fork head 7-1 of the shifting fork is observed, whether the two detection arms interfere with the fork head 7-1 or not is observed, and therefore the position size and the position tolerance of the workpiece are detected, if the two detection arms do not interfere with the workpiece in the rotating process, the workpiece is qualified, and if the two detection arms do not interfere with the workpiece, the workpiece is unqualified. After the lower detection barrel 11 and the upper detection barrel 12 are taken down, the measurement sleeve 8 is sleeved on the measurement column 9, whether the measurement sleeve 8 can be just contacted with the inner side surface of the workpiece is judged, if the measurement sleeve 8 can be just contacted without interference, the workpiece is qualified, and if the measurement sleeve is not qualified, the workpiece is not qualified.

Claims (5)

1. A shifting fork detection tool of an engineering machinery gearbox is characterized by comprising a base (1), a fork handle positioning mechanism and a fork head detection mechanism, wherein a fork handle (7-2) of a shifting fork (7) to be detected is fixed on the base (1) through the fork handle positioning mechanism, the fork head detection mechanism comprises a measuring column (9), a lower detection barrel (11) and an upper detection barrel (12), the measuring column (9) is positioned in a C-shaped fork head (7-1) of the shifting fork (7) and is vertical to the upper plane and the lower plane of the fork head (7-1), the lower end of the measuring column (9) is fixedly connected with the base (1), the lower detection barrel (11) and the upper detection barrel (12) are sequentially sleeved on the measuring column (9) and are in sliding contact with the measuring column (9), one side of the lower detection barrel (11) is provided with a lower detection arm (11-1) corresponding to the lower plane of the fork head (7-1), one side of the upper detection cylinder (12) is provided with an upper detection arm (12-1) corresponding to the upper plane of the fork head (7-1).

2. The engineering machinery gearbox shifting fork detection tool according to claim 1, wherein the fork handle positioning mechanism comprises a mandrel (4), a compression screw (5), tensioning strips (10), a clamping snap ring (6), a pin seat (2) and a fastening screw (3), the lower end of the mandrel (4) is fixedly connected with a base (1), a plurality of axial sliding grooves (4-1) with shallow lower parts and deep upper parts are formed in the side wall of the mandrel (4), one tensioning strip (10) is placed in each axial sliding groove (4-1), a lifting clamping groove (10-1) is formed in the inner side of the upper end of each tensioning strip (10), the compression screw (5) is coaxial with the mandrel (4) and is screwed into a threaded hole in the upper end of the mandrel (4), a clamping disc (5-1) matched with the lifting clamping groove (10-1) in the upper end of each tensioning strip (10) is arranged on the compression screw (5), the clamping snap ring (6) is sleeved outside the tensioning strip (10) and embedded into an annular groove (4-2) in the side wall of the mandrel (4), a fork handle (7-2) of the shifting fork (7) to be detected is sleeved outside the mandrel (4) and the tensioning strip (10) through a reference hole (7-3), the pin base (2) is fixed on the base (1), and the fastening screw (3) is located in a through hole in the pin base (2) and screwed into a screw hole (7-4) in the fork handle (7-2) of the shifting fork (7).

3. The engineering machinery gearbox shifting fork detection tool according to claim 2, wherein the fork head detection mechanism further comprises a measurement sleeve (8), the measurement sleeve (8) is sleeved on the measurement column (9), and the outer cylindrical surface of the measurement sleeve (8) corresponds to the inner side surface of the C-shaped fork head (7-1) of the shifting fork (7) to be detected.

4. The engineering machinery gearbox shift fork detection tool according to claim 3, wherein three axial sliding grooves (4-1) are formed in the side wall of the mandrel (4), and are uniformly distributed around the axis of the mandrel (4).

5. The engineering machinery gearbox shifting fork detection tool according to claim 4, wherein the measuring column (9) and the mandrel (4) are connected with the base (1) through nuts, and the pin seat (2) is connected with the base (1) through a cylindrical pin and a bolt.

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