CN221232060U

CN221232060U - High-precision positioning machine

Info

Publication number: CN221232060U
Application number: CN202323153695.0U
Authority: CN
Inventors: 徐健
Original assignee: Suzhou Sikafu Ultrasound Technology Co ltd
Current assignee: Suzhou Sikafu Ultrasound Technology Co ltd
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-06-28
Anticipated expiration: 2033-11-22

Abstract

The utility model discloses a high-precision positioning machine, which comprises: the frame, be provided with the platen in the frame slip, be provided with grating chi subassembly between platen and frame, be provided with the locking frid in the frame, slide in the locking frid and be provided with T type locking piece, be provided with the locking cylinder on the platen, the locking cylinder links to each other with T type locking piece, is provided with the location tool on the platen, is provided with location guiding mechanism between platen and location tool, location guiding mechanism includes: the positioning device comprises a positioning sleeve and an expansion sleeve, wherein a plurality of threaded through holes are formed in the positioning jig, the bottom of each threaded through hole is in threaded connection with the expansion sleeve with a conical inner cavity, a push rod capable of extending into the expansion sleeve is in threaded connection with the threaded through hole, a plurality of positioning screw holes are formed in a bedplate, the positioning sleeve is in threaded connection with the positioning screw holes, and the positioning holes are formed in the positioning sleeve. The utility model can improve the connection precision between the positioning jig and the bedplate and the stroke precision of the positioning jig.

Description

High-precision positioning machine

Technical Field

The utility model relates to the technical field of automatic processing, in particular to a high-precision positioning machine.

Background

In the automatic production process, a mechanical arm is required to clamp a product or a part, the mechanical arm acts according to a fixed program, the moving point position of the mechanical arm is fixed under the restriction of the program, the mechanical arm is generally required to be matched with a positioning jig, the positioning jig is used for fixing the product or the part at a specified position, the mechanical arm is convenient to grasp, but in the actual production process, the product or the part is required to be conveyed from one station to the other station to continue production, the positioning jig is required to be fixed on a machine, then the machine drives the positioning jig to reciprocate between the two stations, but the machine is easy to be positioned inaccurately in the movement process, and when the machine is positioned inaccurately, the positioning jig cannot be matched with the mechanical arm, so that automatic production cannot be realized. The current machine on the market generally realizes reciprocating motion through the cylinder, pneumatic cylinder or electric cylinder as the driving piece, but these driving pieces are easy to reduce stroke precision because of taking place the clearance after long-time use, secondly, when producing different grade type product or spare part, need different grade type positioning jig load, this just needs to fix different positioning jig on the machine according to the type of product or spare part of production, at present all fix positioning jig on the platen of machine through the bolt, and the bolt passes positioning jig and platen and carries out threaded connection, need the staff to control suitable pretightning force when carrying out threaded connection, pretightning force is not enough, positioning jig and platen take place not hard up easily and the location is inaccurate, pretightning force is too big, can lead to the dangerous cross-section of screw thread of bolt and screw apart from the influence of tensile stress, still can receive the torsional stress effect that the screw moment arouses, thereby influence the life of screw thread in bolt and the screw, and screw hole just can't carry out effective connection again after the screw thread is impaired, and set up a tool on the positioning jig when using the bolt and be big in the positioning jig, the diameter is big than the tool is formed on the fine diameter of screw hole is good in order to take place the diameter of the through-hole and the screw hole, the diameter is difficult to take place in the position is compared with the screw hole in the position of the screw hole, the easy to take place, the position is difficult to be difficult to position to take place.

Disclosure of utility model

The utility model aims to provide a high-precision positioning machine which can improve the installation precision between a platen and a positioning jig and can effectively control the operation precision of the machine.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: high accuracy positioning board includes: the device comprises a rack, two I-shaped guide rails are respectively arranged on the left side and the right side of the rack, an I-shaped sliding block is respectively and slidably clamped on the two I-shaped guide rails, a bedplate is arranged between the two I-shaped sliding blocks, a grating ruler component is arranged between the bedplate and the rack, a push-pull cylinder is arranged on the rack, a piston head of the push-pull cylinder is connected with the bedplate, a locking groove plate is arranged at the bottom of the rack, an inverted T-shaped chute is arranged on the locking groove plate, a T-shaped locking block is slidably arranged in the inverted T-shaped chute, a locking cylinder is arranged at the bottom of the bedplate, a piston head of the locking cylinder is connected with the T-shaped locking block, a positioning jig is arranged at the top of the bedplate, and a positioning guide mechanism is arranged between the bedplate and the positioning jig, and comprises: the positioning device comprises a positioning sleeve and an expansion sleeve, wherein a plurality of threaded through holes are symmetrically formed in the front side and the rear side of the positioning jig, the bottom of each threaded through hole is in threaded connection with the expansion sleeve, a conical inner cavity is formed in the expansion sleeve, a push rod is in threaded connection with the threaded through hole, the push rod stretches into the conical inner cavity of the expansion sleeve, a plurality of positioning screw holes are symmetrically formed in the front side and the rear side of a bedplate, the positioning sleeve is in threaded connection with the positioning screw holes, and positioning holes matched with the expansion sleeve are formed in the positioning sleeve.

Further, the foregoing high precision positioning machine, wherein the grating ruler assembly includes: the grating ruler displacement sensor is arranged on the left side wall of the frame and parallel to the I-shaped guide rail, a fixing frame is arranged on the left side wall of the bedplate, and the reading head is fixed on the fixing frame and is arranged on the grating ruler displacement sensor in a sliding mode.

Further, the high-precision positioning machine table is characterized in that a limiting block is respectively arranged at the front end and the rear end of the I-shaped guide rail, and the limiting block is connected with the frame.

Furthermore, the high-precision positioning machine table is characterized in that the T-shaped locking block is coated with the buffer rubber sleeve.

Furthermore, the high-precision positioning machine table is characterized in that the expansion sleeve is in a conical shape, the positioning hole is also in a conical shape, and the taper of the outer side wall of the expansion sleeve is the same as the taper of the hole wall of the positioning hole.

Further, the foregoing high precision positioning machine, wherein the push rod includes: the external diameter of the smooth section is smaller than that of the first thread section, the bottom of the smooth section is arc-shaped, a first inner hexagonal hole is formed in the top of the first thread section, and the first thread section is in threaded connection with the threaded through hole.

Further, the high-precision positioning machine is characterized in that a second thread section is arranged at the top of the expansion sleeve, a second inner hexagonal hole is formed in the top of the second thread section, and a through hole which is communicated with the second inner hexagonal hole and the conical inner cavity is formed in the second thread section.

Further, the high-precision positioning machine is characterized in that a through hole is formed in the positioning screw hole in a downward extending mode, and a third inner hexagonal hole is formed in the bottom of the positioning sleeve.

The utility model has the advantages that: the grating ruler component is arranged between the frame and the bedplate, so that the stroke of the bedplate can be set and monitored, and when the grating ruler component monitors that the stroke of the bedplate is inconsistent with the set stroke, the grating ruler component can automatically adjust, so that the bedplate and a positioning jig arranged on the bedplate are ensured to have higher stroke precision; after the bedplate reaches a designated station, the locking cylinder can be clamped with the locking groove plate by driving the T-shaped locking block upwards, and then the bedplate is fixed at the designated station through tension, so that the bedplate and the positioning jig can still keep higher position precision when parking; the expansion fit between the expansion sleeve and the positioning sleeve in the positioning guide mechanism is utilized to improve the connection precision between the positioning jig and the bedplate, so that the instability during the use of the bolt connection is avoided.

Drawings

Fig. 1 is a schematic top view of a high-precision positioning machine according to the present utility model.

Fig. 2 is a schematic view of the structure in the left-hand direction in fig. 1.

Fig. 3 is a schematic view of the structure in the cross-section direction in fig. 1.

Fig. 4 is a schematic view of the structure in the front view direction in fig. 1.

Fig. 5 is a schematic structural view of a connection structure between the positioning jig and the platen.

Fig. 6 is a schematic view of the structure of the expansion shell of fig. 5.

Fig. 7 is a schematic view of the push rod of fig. 5.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and the preferred embodiments.

As shown in fig. 1 to 7, the high-precision positioning machine according to the present utility model includes: the machine frame 1, be provided with two I shape guide rail 11 respectively in the left and right sides of machine frame 1, slide the card respectively on two I shape guide rail 11 and be equipped with an I shape slider 12, be provided with a stopper 13 respectively at the front and back both ends of I shape guide rail 11, stopper 13 links to each other with machine frame 1, is provided with platen 2 between two I shape sliders 12, is provided with grating chi subassembly between platen 2 and machine frame 1, and grating chi subassembly includes: the grating scale displacement sensor 21 and the reading head 22, the grating scale displacement sensor 21 is arranged on the left side wall of the frame 1 and parallel to the I-shaped guide rail 11, the fixing frame 23 is arranged on the left side wall of the platen 2, and the reading head 22 is fixed on the fixing frame 23 and is arranged on the grating scale displacement sensor 21 in a sliding manner.

The machine frame 1 is provided with a push-pull cylinder 14, a piston head of the push-pull cylinder 14 is connected with a bedplate 2 through a connecting plate 15, the bottom of the machine frame 1 is provided with a locking groove plate 3, the locking groove plate 3 is provided with an inverted T-shaped sliding groove 31, the opening end of the inverted T-shaped sliding groove 31 faces upwards, a T-shaped locking block 32 is slidably arranged in the inverted T-shaped sliding groove 31, the T-shaped locking block 32 is coated with a buffer rubber sleeve 33, the bottom of the bedplate 2 is provided with a locking cylinder 24, the T-shaped locking block 32 penetrates through the opening end of the inverted T-shaped sliding groove 31 and then is connected with the piston head of the locking cylinder 24, the top of the bedplate 2 is provided with a positioning jig 4, and a positioning guide mechanism is arranged between the bedplate 2 and the positioning jig 4 and comprises: the positioning sleeve 5 and the expansion sleeve 6 are symmetrically provided with a plurality of threaded through holes 41 on the front side and the rear side of the positioning jig 4, the bottom of the threaded through holes 41 is in threaded connection with the conical expansion sleeve 6, a conical inner cavity 61 is arranged in the expansion sleeve 6, a second threaded section 62 is arranged at the top of the expansion sleeve 6, a second inner hexagonal hole 63 is arranged at the top of the second threaded section 62, a through hole 64 which is communicated with the second inner hexagonal hole 63 and the conical inner cavity 61 is arranged on the second threaded section 61, after the second threaded section 62 on the expansion sleeve 6 is connected with the threaded through holes 41, a worker can use an inner hexagonal wrench to pass through the threaded through holes 41 and then push the expansion sleeve 6 in the second inner hexagonal hole 63 in a screwing mode, a push rod 7 is in the threaded through holes 41 in a threaded mode, and the push rod 7 comprises: the outer diameter of the smooth section 72 is smaller than that of the first threaded section 71, the bottom of the smooth section 72 is arc-shaped, a first inner hexagonal hole 73 is formed in the top of the first threaded section 71, the first threaded section 71 of the push rod 7 is in threaded connection with the threaded through hole 41, the smooth section of the push rod 7 penetrates through the through hole 64 of the expansion sleeve 6 and then stretches into the conical inner cavity 61 of the expansion sleeve 6, a plurality of positioning screw holes are symmetrically formed in the front side and the rear side of the platen 2, through holes are formed in the positioning screw holes in a downward extending mode, a positioning sleeve 5 is connected in the positioning screw holes in a threaded mode, a third inner hexagonal hole 51 is formed in the bottom of the positioning sleeve 5, a worker can screw the positioning sleeve 5 against the third inner hexagonal hole 51 after penetrating through the through hole, a positioning hole 52 in a conical shape matched with the expansion sleeve 6 is formed in the positioning sleeve 5, and the taper of the wall of the positioning hole 52 is identical to the taper of the outer side wall of the expansion sleeve 6.

When the positioning jig 4 is fixed on the platen 2, the positioning sleeves 5 are screwed and fixed in the positioning screw holes respectively, the expansion sleeves 6 are screwed and fixed in the threaded through holes 41 respectively, the expansion sleeves 6 extend downwards from the positioning jig 4, when the positioning jig 4 is placed on the platen 2, the expansion sleeves 6 on the positioning jig 4 are respectively inserted into the positioning holes 52 of the corresponding positioning sleeves 5, then the push rods 7 are screwed into the threaded through holes 41 respectively, when the smooth sections 72 of the push rods 7 are inserted into the expansion sleeves 6, the smooth sections 72 of the push rods 7 can be used for expanding the expansion sleeves 6 when the push rods 7 continue to move downwards, so that the expansion sleeves 6 are expanded and tightly arranged in the positioning holes 52 of the positioning sleeves 5, when the expansion sleeves 6 are expanded and tightly arranged in the positioning sleeves 5, the expansion sleeves 6 and the positioning sleeves 5 can be automatically centered, the connection precision between the expansion sleeves 6 and the positioning sleeves 5 can be automatically improved, the connection precision between the positioning jig 4 and the platen 2 can be improved, and the connection precision between the expansion sleeves 4 and the positioning sleeves 2 can be ensured to be not to be changed, and the connection precision between the positioning sleeves 4 and the positioning sleeves 2 can be changed for a plurality of times.

After the positioning jig 4 is fixed on the bedplate 2, the bedplate 2 is pushed to drive the positioning jig 4 to do linear reciprocating motion through the push-pull air cylinder 14, before the movement, the linear distance between the two stations is recorded by the grating ruler, then the push-pull air cylinder 14 is started to drive the bedplate 12 to drive the positioning jig 4 to do linear reciprocating motion between the two stations, after the positioning jig 4 reaches a designated station, the push-pull air cylinder 14 stops acting, the locking air cylinder 24 drives the T-shaped locking block 32 to move upwards, the T-shaped locking block 32 is clamped in the inverted T-shaped sliding groove 31 on the locking groove plate 3, the noise generated when the T-shaped locking block 32 is contacted with the locking groove plate 3 can be reduced through the buffer rubber sleeve 33 on the T-shaped locking block 32, the locking air cylinder 24 locks the bedplate 2 at the designated station through pulling force, after the mechanical hand clamps products or parts in the positioning jig 4, the locking air cylinder 24 drives the T-shaped locking block 32 downwards to loosen the groove plate 3, and the push-pull air cylinder 14 drives the positioning jig 4 to reset. When the stroke accuracy of the push-pull cylinder 14 is inaccurate after long-time use, the numerical value of the grating ruler displacement sensor 21 read by the reading head 22 connected with the platen 2 on the grating ruler assembly is different from the original set value, at this time, the grating ruler assembly adjusts the push-pull cylinder 14 until the stroke of the push-pull cylinder 14 for driving the platen 2 is consistent with the originally set stroke, thereby ensuring that the positioning jig 4 can achieve a designated station and form good fit with the manipulator.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.

Claims

1. High accuracy positioning board includes: the frame, its characterized in that: two I-shaped guide rails are respectively arranged on the left side and the right side of the frame, an I-shaped sliding block is respectively arranged on the two I-shaped guide rails in a sliding mode, a bedplate is arranged between the two I-shaped sliding blocks, a grating ruler component is arranged between the bedplate and the frame, a push-pull cylinder is arranged on the frame, a piston head of the push-pull cylinder is connected with the bedplate, a locking groove plate is arranged at the bottom of the frame, an inverted T-shaped sliding groove is arranged on the locking groove plate, a T-shaped locking block is arranged in the inverted T-shaped sliding groove in a sliding mode, a locking cylinder is arranged at the bottom of the bedplate, a piston head of the locking cylinder is connected with the T-shaped locking block, a positioning jig is arranged at the top of the bedplate, and a positioning guide mechanism is arranged between the bedplate and the positioning jig, and comprises: the positioning device comprises a positioning sleeve and an expansion sleeve, wherein a plurality of threaded through holes are symmetrically formed in the front side and the rear side of the positioning jig, the bottom of each threaded through hole is in threaded connection with the expansion sleeve, a conical inner cavity is formed in the expansion sleeve, a push rod is in threaded connection with the threaded through hole, the push rod stretches into the conical inner cavity of the expansion sleeve, a plurality of positioning screw holes are symmetrically formed in the front side and the rear side of a bedplate, the positioning sleeve is in threaded connection with the positioning screw holes, and positioning holes matched with the expansion sleeve are formed in the positioning sleeve.

2. The high precision positioning machine of claim 1, wherein: the grating scale assembly includes: the grating ruler displacement sensor is arranged on the left side wall of the frame and parallel to the I-shaped guide rail, a fixing frame is arranged on the left side wall of the bedplate, and the reading head is fixed on the fixing frame and is arranged on the grating ruler displacement sensor in a sliding mode.

3. The high precision positioning machine of claim 1, wherein: two limiting blocks are respectively arranged at the front end and the rear end of the I-shaped guide rail, and the limiting blocks are connected with the frame.

4. The high precision positioning machine of claim 1, wherein: the T-shaped locking block is coated with a buffer rubber sleeve.

5. The high precision positioning machine of claim 1, wherein: the expansion sleeve is in a conical shape, the positioning hole is also in a conical shape, and the taper of the outer side wall of the expansion sleeve is the same as the taper of the hole wall of the positioning hole.

6. The high precision positioning machine of claim 1, wherein: the push rod includes: the external diameter of the smooth section is smaller than that of the first thread section, the bottom of the smooth section is arc-shaped, a first inner hexagonal hole is formed in the top of the first thread section, and the first thread section is in threaded connection with the threaded through hole.

7. The high precision positioning machine of claim 1, wherein: the top of the expansion sleeve is provided with a second thread section, the top of the second thread section is provided with a second inner hexagonal hole, and the second thread section is provided with a through hole which is communicated with the second inner hexagonal hole and the conical inner cavity.

8. The high precision positioning machine of claim 1, wherein: the positioning screw hole is provided with a through hole in a downward extending mode, and the bottom of the positioning sleeve is provided with a third inner hexagonal hole.