Drilling clamp suitable for long-distance inclined hole positioning

Abstract

The utility model relates to a drilling fixture suitable for long-distance and inclined hole positioning, which comprises a pin hole positioning mechanism, a section bar guiding and aligning mechanism and a material blocking and positioning mechanism, the pin hole positioning mechanism comprises a motor, a left-handed and right-handed lead screw, a left-handed and right-handed nut, a movable positioning plate, a rhombic positioning pin and a longitudinal guide column, the motor drives the left-handed and right-handed lead screw to rotate, and the motor drives the left-handed and right-handed lead screw to rotate. The two left-right rotating nuts are connected to the two sides of the left-right rotating lead screw in a screwed mode respectively and connected with the movable positioning plates respectively, the movable positioning plates are connected with the longitudinal guide columns in a sliding mode, the rhombic positioning pins are fixed to the movable positioning plates, and the sectional material guiding and aligning mechanism is arranged on the feeding side of the pin hole positioning mechanism. The material blocking and positioning mechanism is arranged on one side of a discharging port of the pin hole positioning mechanism. The drilling machine is used for long-distance positioning and online positioning drilling. The device has the functions of automatically guiding, centering, clamping and releasing incoming materials in movement. And the position can be finely adjusted according to the hole group distance of a drilling workpiece profile.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical technical field especially relates to a kind of drilling fixture suitable for long distance and with inclined hole positioning. BACKGROUND

[0002] A company develops a new type of bridge building material-U-shaped steel, when the profile both ends inclined side wall requires each to drill two groups of 12-φ24mm installation connecting hole, and two end hole group spacing minimum 9 meters, longest 18 meters (see Figure 1 、 Figure 2 ) The product hole group is usually conveniently processed method is to use profile end positioning to process, but due to the tolerance requirement given by profile fixed length is relatively loose (±5), and two end hole group spacing requirement is relatively strict (±1), thus causing the hole group spacing drilled with two side end positioning often appears out-of-tolerance phenomenon, cannot satisfy user requirement. For this, hole positioning drilling fixture is specially designed, and the long-distance hole group spacing out-of-tolerance problem is completely solved. SUMMARY

[0003] The utility model provides a kind of drilling fixture suitable for long distance and with inclined hole positioning, to guarantee profile two end hole group spacing meet the tolerance requirement given, process is first with end positioning to process the hole group of one end, after drilling, profile is sent out by roller way, reaches the fixture that has been adjusted and installed according to the hole group spacing required by hole group beforehand, fixture is positioned and clamped using the inclined hole of side wall processing completion, then drilling machine completes the processing of the hole group of other end, to satisfy user demand, guarantee product quality.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A kind of drilling fixture suitable for long distance and with inclined hole positioning, including pinhole positioning mechanism, profile guide straightening mechanism, material blocking positioning mechanism, the pinhole positioning mechanism includes motor, left and right screw rod, left and right screw nut, mobile positioning plate, rhombus positioning pin, longitudinal guide column, the motor drives left and right screw rod rotation, the thread rotation direction of the two sides of left and right screw rod is opposite, two left and right screw nuts are respectively screwed in the two sides of left and right screw rod, two left and right screw nuts are respectively connected with mobile positioning plate, the mobile positioning plate is slidably connected with longitudinal guide column, the rhombus positioning pin is fixed on mobile positioning plate, the profile guide straightening mechanism is set in the feed side of pinhole positioning mechanism, the center line of profile guide straightening mechanism entrance and the center line of pinhole positioning mechanism are in same vertical plane, the two outer side guide plates of profile guide straightening mechanism are respectively elastically connected with mobile positioning plate, the material blocking positioning mechanism is set in the discharge port side of pinhole positioning mechanism, the material blocking positioning mechanism can be lifted.

[0006] The profile guiding and aligning mechanism comprises an outer guiding plate, a positioning guide wheel and an inner guiding plate, the outer guiding plate is two symmetrically arranged guiding plates in the shape of a bell mouth, the two guiding plates are elastically connected with two moving positioning plates respectively, the two positioning guide wheels are symmetrically installed on the two inner guiding plates respectively, and the inner guiding plate is fixed on the inner side of the bell mouth of the outer guiding plate.

[0007] The material blocking and positioning mechanism comprises a cylinder, a lifting supporting plate and an initial positioning plate, the initial positioning plate is connected and fixed on the lifting supporting plate, and the cylinder drives the lifting supporting plate to lift.

[0008] The movable box seat is connected in the interior of the fixed box seat through the transverse moving guide column, the movable box seat is slidingly connected with the transverse moving guide column, the transverse moving guide column is fixedly connected with the fixed box seat, and the fine adjustment screw is screwed on the two sides of the fixed box seat and is in abutment with the movable box seat.

[0009] The rhombic positioning pin has an inclination angle, and the inclination angle of the rhombic positioning pin matches the inclination angle of the hole position on the drilled profile.

[0010] The drilled jig is arranged at the discharging roller way of the drilling machine, and the distance between the drilled jig and the drilling machine is consistent with the distance between the hole groups at the two ends of the drilled profile.

[0011] Compared with the prior art, the profile guiding and aligning mechanism has the advantages that:

[0012] 1) The profile guiding and aligning mechanism can be used for long distance positioning, and the position can be randomly adjusted according to the hole group spacing of a product, and the drilling is positioned on line.

[0013] 2) The profile guiding and aligning mechanism has the functions of automatic alignment, centering, automatic clamping and releasing for the incoming material in motion.

[0014] 3) The profile guiding and aligning mechanism utilizes inclined hole group positioning and has initial and accurate double positioning functions.

[0015] 4) The profile guiding and aligning mechanism can randomly adjust the position for matching the distance from the drilling machine to the hole group spacing on the profile. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view (front view) of a drilled workpiece U-shaped steel in the profile guiding and aligning mechanism.

[0017] Figure 2 is a structural schematic view (side view sectional view) of a drilled workpiece U-shaped steel in the profile guiding and aligning mechanism.

[0018] Figure 3It is the planar arrangement drawing of the drilling jig and the drilling machine in the utility model.

[0019] Figure 4 It is the structure schematic view of the drilling jig (front view) in the utility model.

[0020] Figure 5 It is the structure schematic view of the drilling jig (top view) in the utility model.

[0021] Figure 6 It is Figure 4 A-A sectional view.

[0022] In the drawing: 1 - motor, 2 - moving box seat, 3 - fixed box seat, 4 - left and right rotating screw, 5 - left and right rotating nut, 6 - moving positioning plate, 7 - rhombic positioning pin, 8 - fine adjustment screw, 9 - horizontal moving guide column, 10 - air cylinder, 11 - lifting support plate, 12 - initial positioning plate, 13 - longitudinal guide column, 14 - inner side guide plate, 15 - positioning guide wheel, 16 - outer side guide plate, 17 - U-shaped steel, 18 - feeding roller way, 19 - combined drilling machine, 20 - discharging roller way, 21 - drilling jig. DETAILED DESCRIPTION

[0023] The utility model is described in more detail through embodiments, and these embodiments are only for describing the best implementation of the utility model and do not limit the scope of the utility model at all.

[0024] As Figures 3-6 shown, a drilling jig suitable for long distance and inclined hole positioning, comprising pin hole positioning mechanism, profile guiding and straightening mechanism, material blocking positioning mechanism, the pin hole positioning mechanism comprises motor 1, left and right rotating screw 4, left and right rotating nut 5, moving positioning plate 6, rhombic positioning pin 7, longitudinal guide column 13, the motor 1 drives left and right rotating screw 4 to rotate, the thread rotation direction of the two sides of left and right rotating screw 4 is opposite, two left and right rotating nut 5 are respectively screwed on the two sides of left and right rotating screw 4, two left and right rotating nut 5 are respectively connected with moving positioning plate 6, moving positioning plate 6 is slidably connected with longitudinal guide column 13, rhombic positioning pin 7 is fixed on moving positioning plate 6, the profile guiding and straightening mechanism is arranged at the material inlet side of pin hole positioning mechanism, the center line of the inlet of profile guiding and straightening mechanism and the center line of pin hole positioning mechanism are in the same vertical plane, two outer side guide plates 16 of profile guiding and straightening mechanism are respectively elastically connected with moving positioning plate 6, the material blocking positioning mechanism is arranged at the material outlet side of pin hole positioning mechanism, and the material blocking positioning mechanism can be lifted and lowered. Motor 1 adopts a cycloid reduction motor.

[0025] See Figure 5 , Figure 6The profile guiding and aligning mechanism comprises an outer guiding plate 16, a positioning guide wheel 15 and an inner guiding plate 14, the outer guiding plate 16 is two symmetrically arranged guiding plates in the shape of a bell mouth, the two guiding plates are elastically connected with the two moving positioning plates 6 respectively, the two positioning guide wheels 15 are symmetrically installed on the two inner guiding plates 14 respectively, and the inner guiding plate 14 is fixed on the inner side of the bell mouth of the outer guiding plate 16.

[0026] See Figure 6 The material blocking and positioning mechanism comprises a cylinder 10 and a lifting supporting plate 11, the initial positioning plate 12 is connected and fixed on the lifting supporting plate 11, and the cylinder 10 drives the lifting supporting plate 11 to lift.

[0027] The utility model also comprises a fixed box seat 3, a moving box seat 2, a fine adjustment screw 8 and a transverse moving guide column 9, the moving box seat 2 is connected in the inside of the fixed box seat 3 through the transverse moving guide column 9, the moving box seat 2 is slidably connected with the transverse moving guide column 9, the transverse moving guide column 9 is fixedly connected with the fixed box seat 3, the fine adjustment screw 8 is screwed on the two sides of the fixed box seat 3 and is in contact with the moving box seat 2, and the pin hole positioning mechanism, the profile guiding and aligning mechanism and the material blocking and positioning mechanism are all installed on the moving box seat 2.

[0028] The rhombic positioning pin 7 has an inclination angle, and the inclination angle of the rhombic positioning pin 7 matches the inclination angle of the hole position on the drilled profile.

[0029] See Figure 3 The drilling clamp 21 is arranged at the discharging roller way 20 of the combined drilling machine 19, and the distance between the drilling clamp 21 and the combined drilling machine 19 is consistent with the distance between the holes at the two ends of the U-shaped steel 17.

[0030] The functions and effects of the main mechanism components in the utility model are as follows:

[0031] The fixed box seat 3 is used for mounting the parts on the drilling clamp 21, can be moved, adjusted and fixed at will on the discharging roller way 20 frame at the rear side of the combined drilling machine 19 according to the length and hole distance requirements of the processed profile, and four fine adjustment screws 8 for fine adjustment of the interval are screwed on the side wall in the profile conveying direction.

[0032] The moving box seat 2 is assembled with the fixed box seat 3 through two transverse moving guide columns 9, the hole distance fine adjustment in the range of 0-20mm can be realized by adjusting the fine adjustment screw 8, thus the complicated operation of frequently moving the whole clamp body to adjust the hole distance is avoided, two longitudinal guide columns 13 are installed on the two end side walls, the moving positioning plate 6 is worn on the longitudinal guide column 13, and the longitudinal guide column 13 moves and guides the moving positioning plate 6.

[0033] Profile guiding and straightening mechanism: mainly composed of inner guiding plate 14, outer guiding plate 16 and positioning guide wheel 15, installed in the middle of the side wall of the moving box seat 2 facing the incoming material direction. Because the profile is long, some deflection is inevitable during roller conveying. The outer guiding plate 16 is used for initial straightening before entering the drilling clamp 21, and then the positioning guide wheel 15 guides the centering, which eliminates the phenomenon of colliding with the drilling clamp due to profile deflection.

[0034] Pin hole positioning mechanism: the left and right rotating lead screws 4 are connected to the motor 1 through a shaft coupling, and the two ends of the left and right rotating lead screws 4 are fixed on the moving box seat 2 through bearings. The left and right rotating lead screws 4 are composed of two lead screws with opposite screw directions and connected by a concentric sleeve; or different screw threads can be machined on both sides of a lead screw. The two left and right rotating nuts 5 are screwed on the two lead screws with opposite screw directions of the left and right rotating lead screws 4, and the moving positioning plate 6 is connected with the left and right rotating nuts 5. Under the drive of the left and right rotating nuts 5, the moving positioning plate 6 moves left and right along the longitudinal guide column 13.

[0035] Material blocking positioning mechanism: installed on the moving box seat 2, located in the middle of the side wall opposite to the profile guiding and straightening mechanism. When working, the lifting plate 11 driven by the cylinder 10 placed in the lower part completes the lifting and lowering action, thereby driving the initial positioning plate 12 connected therewith to realize the initial material blocking and descending release function, so as to meet the precise positioning and clamping task completed by the diamond positioning pin 7 in the next step.

[0036] The cycloidal reduction motor provides power for the automatic opening and closing of the diamond positioning pin 7, clamping and releasing, and is installed at one end of the moving box seat 2, controlled by a remote controller.

[0037] The outer guiding plate 16 is connected with the moving positioning plate 6 by bolts, and a spring is sleeved on the bolt, which is in contact with the outer guiding plate 16 and the moving positioning plate 6. When the moving positioning plate 6 clamps inward (the diamond positioning pin 7 is inserted into the side wall hole drilled before), the outer guiding plate 16 will also be clamped and positioned to the U-shaped steel 17 along the side wall inclined surface of the U-shaped steel 17 under the action of the spring.

[0038] The specific working process of drilling clamp positioning and clamping:

[0039] Firstly, the hole group processing of either side of the U-shaped steel 17 profile positioned by the end is completed by the special combination drilling machine 19, then the U-shaped steel 17 is transported by the feeding roller way before and after the combination drilling machine 19 to the drilling clamp 21 located at the rear side of the combination drilling machine 19 and adjusted in position, at this time, the initial positioning plate 12 of the clamp should be lifted by remote control, and the diamond positioning pin 7 is retracted to the outermost side, during the process of the U-shaped steel 17 approaching the clamp, the inner and outer deviation of the U-shaped steel 17 is guided by the outer guide plate 16 and the inner guide plate 14 and the positioning guide wheel 15, the U-shaped steel 17 is introduced and centered, and finally the U-shaped steel 17 is stopped by the initial positioning plate 12, because the positioning mode of the initial positioning plate 12 is completely consistent with the positioning mode when the hole group is processed first, the same end positioning is adopted, so that the front end of the diamond positioning pin 7 with a tapered head is ensured to be within the hole diameter range, at this time, the initial positioning plate 12 is lowered, the cycloidal reduction motor 1 is driven to rotate by remote control operation, thereby rotating the left and right rotating lead screws 4, and the moving positioning plate 6 together with the left and right rotating lead screws 5 is simultaneously moved inward, so that the diamond positioning pin 7 fixed thereon is clamped into the side arm hole of the U-shaped steel 17 which has been drilled, so that the secondary positioning of the accurate hole group spacing is ensured, at the same time, the clamping of the U-shaped steel 17 is completed by the outer guide plate 16 installed on the moving positioning plate 6, at this time, the combination drilling machine 19 can be started again to complete the hole group processing of the other side. After the processing is completed, the diamond positioning pin 7 is retracted and the clamping of the profile is released by remote control operation of the motor 1, at the same time, the discharge roller way 20 is started to send out the profile which has been processed, and the subsequent inspection, packaging and warehousing are carried out.

[0040] If the over-difference phenomenon occurs during the processing of the profile hole group, the fine adjustment screw can be adjusted according to the test results, and the drilling test is carried out until the product is qualified.

Claims

1. A drilling jig suitable for long-distance drilling and positioned by inclined holes, characterized in that, The device includes a pin hole positioning mechanism, a profile guiding and straightening mechanism, and a material blocking positioning mechanism. The pin hole positioning mechanism includes a motor, left and right rotating lead screws, left and right rotating lead nuts, a movable positioning plate, a diamond-shaped positioning pin, and a longitudinal guide post. The motor drives the left and right rotating lead screws to rotate. The threads on both sides of the left and right rotating lead screws rotate in opposite directions. Two left and right rotating lead nuts are respectively screwed to both sides of the left and right rotating lead screws. The two left and right rotating lead nuts are respectively connected to the movable positioning plate. The movable positioning plate is slidably connected to the longitudinal guide post. The diamond-shaped positioning pin is fixed on the movable positioning plate. The profile guiding and straightening mechanism is located on the feeding side of the pin hole positioning mechanism. The center line of the inlet of the profile guiding and straightening mechanism and the center line of the pin hole positioning mechanism are in the same vertical plane. The two outer guide plates of the profile guiding and straightening mechanism are elastically connected to the movable positioning plate. The material blocking positioning mechanism is located on the discharge side of the pin hole positioning mechanism and is capable of lifting and lowering.

2. A drilling jig suitable for long-distance drilling and positioned by an inclined hole, as described in claim 1, characterized in that, The profile guiding and straightening mechanism includes an outer guide plate, a positioning guide wheel, and an inner guide plate. The outer guide plate consists of two symmetrically arranged guide plates with flared openings. The two guide plates are elastically connected to two movable positioning plates respectively. The two positioning guide wheels are symmetrically installed on the two inner guide plates respectively. The inner guide plates are fixed to the inside of the flared openings of the outer guide plates.

3. A drilling jig suitable for long-distance drilling and positioned by an inclined hole, as described in claim 1, characterized in that, The material positioning mechanism includes a cylinder, a lifting pallet, and an initial positioning plate. The initial positioning plate is connected and fixed to the lifting pallet, and the cylinder drives the lifting pallet to move up and down.

4. A drilling jig suitable for long-distance drilling and positioned by an inclined hole, as described in claim 1, characterized in that, It also includes a fixed housing, a movable housing, fine-tuning screws, and a transverse guide post. The movable housing is connected to the inside of the fixed housing through the transverse guide post. The movable housing is slidably connected to the transverse guide post, and the transverse guide post is fixedly connected to the fixed housing. The fine-tuning screws are screwed to both sides of the fixed housing and abut against the movable housing. The pin hole positioning mechanism, the profile guiding and straightening mechanism, and the material blocking positioning mechanism are all installed on the movable housing.

5. A drilling jig suitable for long-distance drilling and positioned by an inclined hole, as described in claim 1, characterized in that, The diamond-shaped locating pin has an inclination angle that matches the inclination angle of the hole on the drilled profile.

6. A drilling jig suitable for long-distance drilling and positioned by inclined holes according to any one of claims 1-5, characterized in that, The drilling fixture is set at the discharge roller conveyor of the drilling machine, and the distance between the drilling fixture and the drilling machine is the same as the distance between the holes at both ends of the drilling profile.

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