JP2501982Y2 - Shape correction device for vehicle body frame having punching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention corrects the shape deformation of a body frame welded and joined in advance, and also corrects the shape of a body frame having a punching device for punching a set position of the body frame. Regarding the device.

(Prior Art) A vehicle body frame such as a truck is assembled by welding a plurality of members, but the thermal influence at the time of welding causes
There are problems such as welding distortion (deformation) such as twisting and warping.

As a measure against this, as disclosed in Japanese Utility Model Laid-Open No. 61-172609, a vehicle body frame conveyed by a conveying device is received and lifted to a predetermined height by a lifter, and a vehicle body frame is clamped by a lifter. A shape correction device for a vehicle body frame that clamps the vehicle body, measures the deformation of the vehicle body frame with a measurement unit, and presses the vicinity of the measurement site of the vehicle body frame with a pressure unit according to the measured value to correct the deformation of the vehicle body frame. Is proposed.

(Problems to be Solved by the Invention) According to the above-mentioned conventional body frame shape correcting device, the deformation of the body frame after welding is measured, and the body frame is pressed and corrected according to the measured value to correct the twist. Deformation such as warpage can be eliminated. However, since a bracket having holes for mounting the vehicle body already attached thereto is attached to the vehicle body frame by welding, the position of the hole drilled in the bracket is displaced due to the shape correction for pressing the vehicle body frame. However, there is a problem that the hole positions of the vehicle body frames vary.

Therefore, an object of the present invention is to provide a body frame shape correcting device having a perforation device that can always provide holes at fixed positions without being influenced by the shape correction of the body frame.

(Means for Solving the Problem) A shape correcting device for a vehicle body frame having a punching device of the present invention which achieves the above object is provided with a clamping device for positioning and clamping a vehicle body frame welded and joined in advance at a predetermined position, and at a predetermined position. Displacement measuring device for measuring the amount of deformation of a measurement portion of a body frame clamped by positioning, a correction device for correcting the shape by pressurizing the vicinity of the measurement portion of the body frame according to the displacement measurement value by the displacement measuring device, and a correction device And a punching device for punching at a set position of the body frame whose shape has been corrected by.

(Operation) The body frame pre-welded by the clamp device is positioned and clamped at a predetermined position, the deformation amount of the measurement portion of the body frame is measured by the measuring device, and the vicinity of the measurement portion is pressed by the correction device to form the formation. The setting position of the body frame whose shape has been corrected and corrected is punched by the punching device.

(Embodiment) An embodiment of a body frame shape correcting device having a punching device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic explanatory view of the present embodiment. A jig frame (not shown), which is the base of the present device, has a lifter 1, locate pins 2, 2, a cross member clamp device 3, a clamp device.
4,4, ..., X-ray correction device 5,5, Y-axis correction male value 6,6, Z-axis correction device 7,
7, X displacement measuring device 8,8, Y displacement measuring device 9,9, Z displacement measuring device 1
0, 10 and punching devices 11, 11, 11 are provided respectively.

The lifter 1 arranged on the jig frame includes a horizontal lifter table 1a and a cylinder 1b for moving the lifter table 1a up and down.
And a gauge hole provided in the body frame F by receiving the body frame F which has been welded in the jig frame by a carrying device (not shown) and in which the welding is completed in the previous process and further lowering the lifter table 1a. The body frame F is positioned by engaging (not shown) the locate pins 2,2.

A cylindrical cross member Fa installed on the front end of the positioned body frame F and a pair of side members Fb, Fb extending along the vehicle front-rear direction are clamped by a cross member clamp device 3, clamp devices 4, 4 ,. Then, it is configured to be fixed.

The cross member clamp device 3 is moved in a direction in which the cross member clamp device 3 comes in contact with and separates from each other along a guide rail (not shown) provided on a base 3a fixedly mounted on the jig frame as shown in FIG. Sliders 3b, 3b are provided so as to be capable of reciprocating.
Clampers 3d, 3d are provided to face the upper ends of the inner ends of the sliders 3b, 3b via supporting bases 3c, 3c, and the lower surfaces of the sliders 3b, 3b respectively have supporting pieces 3e, 3e and pins 3f, 3f. By constructing the cylinder 3g via 3f, the cross member Fa of the vehicle body frame F is clamped and unclamped between the clampers 3d, 3d by the expansion and contraction of the cylinder 3g.

On the other hand, the clamping devices 4, 4, ... For clamping and unclamping the side members Fb, Fb are columns that are erected on a base 4a fixed on the jig frame as shown in FIG.
A clamper 4e is rotatably provided on the top of 4b by a support member 4c and a pin 4d. Clamper 4e rear end and base
A cylinder 4f is installed between the side member Fb and 4a, and the side member Fb is clamped and unclamped between the tip 4e 'of the clamper and the support piece 4g protruding from the column 4b by expansion and contraction of the cylinder 4f.

In the vicinity of both ends of the cross member Fa, pressure heads 5a, 5a for clamping and unclamping the cross member Fa from the front-rear direction by a cylinder (not shown) and the cross member F
The pressure heads 5a, 5a clamped at a are pressurized in the front-rear direction by the cylinder 5b that expands and contracts based on the displacement measurement values by the X-ray displacement measuring devices 8, 8 described later, so that the cross-member Fa is displaced in the front-rear direction. X-ray correction devices 5, 5 for correction are provided.

Cylinders (not shown) clamp pressure heads 6a, 6a and side members Fb, Fb for clamping and unclamping side members Fb, Fb from the vehicle width direction in the vicinity of the center of each side member Fb, Fb. These pressure heads 6a,
A Y-axis correction device for correcting the displacement of the side members Fb, Fb in the vehicle width direction by pressurizing 6a in the vehicle width direction by a cylinder 6b that expands and contracts based on displacement measurement values by Y-axis displacement measurement devices 9, 9 described later. There are 6 and 6.

Further, in the vicinity of the rear ends of the side members Fb, Fb, while the pressure heads 7a, 7a for clamping and unclamping the side members Fb, Fb from the vertical direction and the side members Fb, Fb are clamped by a cylinder (not shown), These pressure heads 7
Z axis for correcting the vertical deformation of the side members Fb, Fb by pressing the a and 7a in the vertical direction by the cylinders 7b and 7b that expand and contract based on the displacement measurement values by the Z axis displacement measuring device 10 and 10 described later. Correction devices 7, 7 are provided. A Z-axis shift cylinder 7c is provided between the pair of Z-axis correction devices 7, 7 for adjusting the distance between the Z-axis correction devices 7, 7.

In the vicinity of the X-axis correction device 5, 5, the cylinder 8b, 8b is moved up and down, and the displacement of the cross member Fa in the front-rear direction is measured, and the cylinder 5b, X-axis correction device 5 based on the displacement measurement value is measured. There are provided X-axis displacement measuring devices 8,8 for instructing the amount of expansion and contraction of 5b, that is, the amount of correction of the cross member Fa in the front-rear direction. A displacement in the width direction is measured, and based on the displacement measurement value, a Y-axis displacement that indicates the amount of expansion / contraction of the cylinders 6b, 6b of the Y-axis correction device 6, 6, that is, the correction amount of the side members Fb, Fb in the vehicle width direction. Measuring devices 9, 9 are provided. Further, in the vicinity of the Z-axis correction device 7,7, the vertical displacements at the rear ends of the side members Fb, Fb are measured, and the cylinders 7b, 7b of the Z-axis correction device 7, 7 are expanded or contracted based on the measured displacement value. A Z-axis measuring device 10, 10 is provided to indicate the amount, that is, the correction amount of the side members Fb, Fb.

Punching devices 11, 11, 11 for punching the brackets b, b, b fixed to the vehicle body frame F are arranged at appropriate positions of the jig frame. The punching device 11 drives the punch 11a to perform punching. The cylinder 11b and the boring device 11 are provided with a shift cylinder 11c that moves the bracket 11b in the horizontal direction toward and away from the bracket b, and a lift cylinder 11a that moves vertically.

Next, the operation of the body frame shape correcting device having the punching device thus configured will be described with reference to the flowchart shown in FIG.

In the first step a, the lift amount of the lifter 1 and the cross member clamp device 3 are changed according to the model to be modified.
And initial conditions such as the clamp position by the clamp devices 4, 4 and the drilling position by the drilling device 11 are set, and the X-axis displacement side setting device 8, which serves as a reference of the vehicle body frame F according to the model, is set in the following second step b. 8, Y-axis displacement measuring device 9, 9 and Z
A set value serving as a reference value of a measurement site of each of the axial displacement measuring devices 10 and 10 is input to a control device (not shown).

Next, in a third step c, a transfer device (not shown)
The body frame F conveyed by the above is received on the lifter table 1a of the lifter 1 and lowered by the cylinder 1b, and the locate pins 2 and 2 provided on the jig frame are engaged with the gauge holes provided on the body frame F. And position the vehicle body frame F at a predetermined position on the jig frame.

In the subsequent fourth step d, a cylindrical cross member Fa provided at the front end of the body frame F positioned is clamped by the clamps 3d, 3d by retracting the cylinder 3g of the cross member clamp device 3. Also a clamp device
Cylinders 4f, 4f of 4,4 ... are retracted and clamps 4e, 4e ... And support pieces 4g, 4g are clamped at predetermined positions of side members Fb, Fb to fix body frame F, and cross member Fa.
Pressing head 5 of X-axis correction device 5, 5 arranged near both ends of
Clamping the vicinity of both ends of the cross member Fa by a, 5a, and expanding and contracting the cylinders 5b, 5b based on the displacement measurement value of the cross member Fa measured by the X-axis displacement measuring device 8, 8 Is applied in the front-back direction to correct the shape of the cross member Fa. Also, due to the contraction of the cylinders (not shown) of the Y-axis correction devices 6, 6 arranged near the rear portions of the side members Fb, Fb, the pressure heads 6a, 6a ...
Clamps b and Fb, expands and contracts the cylinders 6b and 6b based on the vehicle width direction displacement measurement values of the side members Fb and Fb measured by the Y-axis displacement measuring devices 9 and 9, and drives the side members Fb and Fb. The side members Fb, Fb are deformed in the vehicle width direction by applying pressure in the width direction. Further, the cylinder 7b between the Z-axis correcting devices 7, 7 arranged near the rear ends of the side members Fb, Fb is extended to oppose the pressing heads 7a, 7a and 7 of the respective Z-axis correcting devices 7, 7.
Z so that the rear ends of the side members Fb, Fb are located between a and 7a.
The shaft cylinder 7b is extended, the cylinder (not shown) is retracted, the rear ends of the side members Fb, Fb are clamped from above and below by the pressure heads 7a, 7a, and measured by the Z-axis displacement measuring device 10, 10. Cylinders 7b and 7b are expanded and contracted based on the vertical displacement measurement values of the side members Fb and Fb.
The rear end is pressed vertically to correct the vertical deformation of the side member.

In the following fifth step e, an X-axis displacement measuring device
8 and 8, cross member Fa front and back position, Y
The axial displacement measuring devices 9, 9 measure the positions of the side members Fb, Fb in the vehicle width direction, and the Z-axis displacement measuring devices 10, 10 measure the vertical positions of the side members Fb, Fb.

Subsequently, the displacement measurement values respectively measured by the X-axis displacement measuring device 8, 8, the Y-axis displacement measuring device 9, 9 and the Z-axis displacement measuring device 10, 10 by the sixth step f in the fifth step e and If the displacement measurement value measured is compared with the reference value set in the second step b and is out of the allowable range of the set value, it is determined that the shape of the body frame F is inappropriate, and 4 Return to step d, and again each cylinder 5b, 5b, 6b, 6b, 7 of X, Y, Z axis correction device 5, 5, 6, 6, 7, 7
b and 7b are expanded and contracted based on the displacement measurement values of the X, Y and Z axis displacement measuring devices 8, 8, 9, 9, 10 and 10, respectively, to pressurize predetermined portions of the cross member Fa and the side members Fb and Fb. The shape correction is performed by repeating the above steps, and the measurement is repeated until the measured values of the displacement measuring devices 8, 8, 9, 9, 10, 10 are within the allowable range. When the displacement measurement value by each displacement measuring device 8,8,9,9,10,10 is within the allowable range, it moves to the following 7th step g, the cross member clamp device 3, the clamp devices 4,4 ... Unclamps the body frame F by means of the cross member clamp device 3 and the clamp devices 4, 4, ... Releases the restraint of the body frame F and repeats steps 4 to 7g again. The deformation process of the body frame F is completed and the correction process of the body frame F is completed.

Next, in the eighth step h, the body frame F that has completed the correction process clamps the cross member Fa and the side members Fb, Fb again by the cross member clamp device 3, the clamp devices 4, 4, ... The shift cylinder 11 of the punching devices 11, 11, 11 arranged near the end of the cross member Fa, the center of the side member Fb, and the rear end thereof.
The c, 11c, 11c and the lift cylinders 11b, 11d, 11d are positioned by expansion and contraction, and the brackets b, b, b provided at predetermined positions of the vehicle body frame F are perforated by the punching cylinder 11b. In the following tenth step j, the clamp of the body frame F by the cross member clamp device 3, the clamp devices 4, 4, ... Is released to complete the drilling process.

The body frame F that has completed the drilling process extends the cylinder 1b of the lifter 1 by the eleventh step k, is released from the locate pins 2, 2 and is carried out from the shape correction device by a carry-out device (not shown), and the work is completed. On the other hand, the next body frame F is carried into the correction device.

(Effect) According to the body frame shape correcting device having the punching device according to the present invention, the body frame pre-welded by the clamp device is positioned and clamped, the deformation amount of the body frame is measured by the measuring device, and the measurement site is measured. The shape is corrected by pressurizing the vicinity of the body with a correction device and the shape-corrected set position of the body frame is perforated by a perforation device, so that the shape of the body frame is not affected and the correct position is always maintained. Holes can be formed,
It is possible to provide a high quality body frame.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing an embodiment of a body frame shape correcting device having a punching device according to the present invention.
FIG. 4 is a side view of the cross member clamp device used in this embodiment, FIG. 3 is a side view of the clamp device used in this embodiment, and FIG. 4 is a flow chart for explaining the operating state of this embodiment. is there. 3 ... Cross member clamp device (clamp device), 4
... Clamping device, 5 ... X-axis correction device (correction device),
6 ... Y-axis correction device (correction device), 7 ... Z-axis correction device (correction device), 8 ... X-axis displacement measurement device (displacement measurement device), 9 ... Y-axis displacement measurement device (displacement measurement device) ),Ten…
… Z-axis displacement measuring device (displacement measuring device), 11 …… piercing device, F …… body frame.

Claims (1)

(57) [Scope of utility model registration request] 1. A clamp device for positioning and clamping a body frame preliminarily welded and bonded at a predetermined position, a displacement measuring device for measuring a deformation amount of a measurement portion of a body frame positionally clamped at a predetermined position, and a displacement measuring device. A vehicle body having a punching device that has a correction device that pressurizes the vicinity of a measurement portion of a vehicle body frame to correct the shape according to a displacement measurement value, and a punching device that punches a set position of the vehicle body frame that has been shape-corrected by the correction device. Frame shape correction device.