CN211361450U

CN211361450U - Sand casting scanner frame positioning tool clamp

Info

Publication number: CN211361450U
Application number: CN201922350725.4U
Authority: CN
Inventors: 张田
Original assignee: Shenzhen Be Better Technology Industrial Co ltd
Current assignee: Shenzhen Be Better Technology Industrial Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-28
Anticipated expiration: 2029-12-24

Abstract

The utility model provides a sand casting scanner frame positioning tool clamp, which comprises a fixed plate, wherein the upper surface of the fixed plate is provided with a plurality of outer surface fasteners, a plurality of inner surface fasteners, a plurality of bearing parts and a plurality of pressing plates; the bearing piece is attached to the bottom surface of the scanner outer frame, and the pressing piece is attached to the top surface of the scanner outer frame; the outer surface fastener is attached to the outer surface of the scanner outer frame, the inner surface fastener is attached to the inner surface of the scanner outer frame, the outer surface fixing piece comprises an adjustable pressing rod, and the adjustable pressing rod is used for abutting against the outer surface of the scanner outer frame to form an adjustable clamping structure; the workpiece is positioned in the vertical direction formed by the bearing piece and the pressing plate, and clamped in the horizontal direction formed by the outer surface fixing piece and the inner surface fixing piece, so that the workpiece is prevented from moving; still have adjustable compressing tightly the pole and adjust for casting tolerance on the horizontal direction can utilize adjustable compressing tightly the pole and carry out corresponding compensation, has improved the reliability that presss from both sides tight structure, and the product that the tolerance is big is very suitable for.

Description

Sand casting scanner frame positioning tool clamp

Technical Field

The utility model relates to a sand casting's anchor clamps frock technical field especially relates to a sand casting scanner frame location frock clamp.

Background

In the case of processing a workpiece with a rectangular frame structure, such as an outer frame of a scanner, because the requirement for dimensional accuracy is not very high, a sand casting method is usually adopted to perform blank forming, and as shown in fig. 1, the workpiece is a fixing base of a prior art image plate scanner. The blank is subjected to secondary processing after being formed, and a milling tool is required to fix a part in the processing process so as to facilitate processing of the part by processing equipment such as a numerical control machine tool and the like; the currently adopted tool clamp is basically a positioning rigid tool suitable for a precision casting, the size error of a sand casting can reach +/-1 mm, and if the positioning rigid tool is designed, inaccurate positioning, too difficult pressure point adjustment and poor applicability can be caused, so that resources can be wasted.

Therefore, when milling and machining are performed on the scanner shell which is subjected to blank forming by adopting a sand casting process, a flexible tool clamp which is convenient to deal with large tolerance is needed, and positioning adjustment can be performed according to the large tolerance.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned prior art among the background art mentioned frock clamp all be basically to the precision casting follow-up processing carry out the rigidity frock clamp who designs, and this kind of anchor clamps can not be suitable for well to the big product of this kind of tolerance of sand casting technology, so, the utility model provides a can deal with big tolerance to sand casting scanner frame location frock clamp that positioning effect is good.

In order to achieve the purpose, the utility model provides a positioning tool clamp for a sand casting scanner outer frame, which is used for fixing the scanner outer frame which is formed by a sand casting process and needs to be milled, wherein the scanner outer frame is in a rectangular frame structure; the device comprises a fixed plate, wherein a plurality of outer surface fasteners, a plurality of inner surface fasteners, a plurality of bearing parts and a plurality of pressing plate parts are arranged on the upper surface of the fixed plate;

the bearing piece is attached to the bottom surface of the scanner outer frame, and the pressing piece is attached to the top surface of the scanner outer frame to form a fixing structure in the vertical direction;

the outer surface fastener is attached to the outer surface of the scanner outer frame, the inner surface fastener is attached to the inner surface of the scanner outer frame to form a fixing structure in the horizontal direction, the outer surface fixing piece comprises an adjustable pressing rod, and the adjustable pressing rod is used for abutting against the outer surface of the scanner outer frame to form an adjustable clamping structure.

Preferably, the outer surface fastener includes a fixed seat fixed on the fixed plate, the fixed seat is provided with a first channel for the adjustable pressing rod to pass through, a first end of the adjustable pressing rod abuts against the outer surface of the scanner outer frame, the outer surface pressing rod is sleeved with a first spring, one end of the first spring abuts against the first end, the other end of the first spring abuts against the fixed seat, and a second end of the adjustable pressing rod is provided with a first locking nut for fixing; the restoring force of the first spring forms a structure for abutting the first end part and the outer surface of the outer frame of the scanner.

Preferably, the fixing seat is further provided with a second channel, the second channel is communicated with the first channel to form a three-way channel structure, a butterfly screw is arranged in the second channel, the adjustable pressing rod is arranged in the first channel, and the butterfly screw presses the adjustable pressing rod to form a locking structure.

Preferably, a flat groove is formed in the side face of the adjustable pressing rod, and the thumb screw abuts against the flat groove to form an anti-slip structure.

Preferably, the outer surface fasteners and the inner surface fasteners are distributed in the length direction and the width direction of the scanner outer frame, and the outer surface fasteners and the inner surface fasteners are arranged correspondingly.

Preferably, the inner surface fastener is provided with a supporting seat, the supporting seat is provided with a third channel for the inner surface pressing rod to pass through, one end of the inner surface pressing rod is in contact with the inner surface of the outer frame of the scanner, and the other end of the inner surface pressing rod is provided with a fastening screw for locking, so that a rigid supporting structure is formed.

Preferably, the bearing part is provided with a protruding part which is abutted against the bottom surface of the outer frame of the scanner, and the protruding part is in an arc arch structure.

Preferably, the pressing plate comprises a pressing plate, a fixing rod and an adjusting rod, the fixing rod and the adjusting rod are both fixed on the fixing plate, the pressing plate is provided with a first through hole and a second through hole, and the fixing rod penetrates through the first through hole and is fixed by a second locking nut; one end of the adjusting rod penetrates through the second through hole, the other end of the adjusting rod is provided with an adjusting nut, a second spring is sleeved on the adjusting rod, the first end of the second spring abuts against the fixing plate, and the other end of the second spring abuts against the pressing plate; so as to adjust the pressing plate to tightly abut against the top surface of the outer frame of the scanner.

In the prior art, in order to perform secondary milling on a model blank, a rigid tooling fixture is customized correspondingly, because the tooling fixture directly fixes a part during assembly line operation, and then the next processing procedure is performed directly, the operation is very convenient and fast, but the prepared tooling fixture is usually designed for a precision casting, namely a workpiece with a small tolerance range, the generally adopted tooling fixture is directly rigid and is not suitable for adjustment, the scanner outer frame formed by a sand casting process is not suitable for use, the general tolerance range of the sand casting process is +/-1 mm, so that the rigid tooling fixture cannot be used for positioning the scanner outer frame, the purposes of rapid clamping and rapid positioning cannot be achieved, and the natural processing efficiency can be reduced;

the utility model comprises a fixed plate, wherein the upper surface of the fixed plate is provided with a plurality of outer surface fasteners, a plurality of inner surface fasteners, a plurality of bearing parts and a plurality of pressing plates; the bearing piece is attached to the bottom surface of the scanner outer frame, and the pressing piece is attached to the top surface of the scanner outer frame to form a fixing structure in the vertical direction; the outer surface fastener is attached to the outer surface of the scanner outer frame, and the inner surface fastener is attached to the inner surface of the scanner outer frame to form a fixing structure in the horizontal direction, wherein the outer surface fixing piece comprises an adjustable pressing rod which is used for abutting against the outer surface of the scanner outer frame to form an adjustable clamping structure; the vertical direction location that constitutes by bearing spare and clamp plate, the horizontal direction that constitutes by the external surface mounting and the internal surface mounting that set up around the scanner frame periphery presss from both sides tightly, directly prevents that the work piece from taking place the drunkenness, simultaneously, still has adjustable compressing tightly the regulation that the pole compressed tightly the distance for casting tolerance in the horizontal direction can utilize adjustable compressing tightly the pole to correspond the compensation, has just also improved the reliability and the stability of pressing from both sides tight structure, and is very suitable for to big tolerance product.

Drawings

FIG. 1 is a diagram of a prior art scanner housing;

FIG. 2 is a schematic structural view of the outer frame of the sand casting scanner of the present invention;

fig. 3 is a perspective view of the present invention;

FIG. 4 is a schematic structural view of the outer surface fastener of the present invention;

FIG. 5 is a schematic view of the inner surface fastener of the present invention;

fig. 6 is a schematic structural view of the carrier of the present invention;

FIG. 7 is a schematic view of the pressing plate of the present invention;

figure 8 is the utility model discloses a clamp sand foundry goods scanner frame during schematic diagram.

The main element symbols are as follows:

1. a scanner housing;

2. a fixing plate;

3. an outer surface fastener; 31. the pressing rod can be adjusted; 311. a first end portion; 312. a first spring; 313. a second end portion; 314. a first lock nut; 315. flattening the groove; 32. a fixed seat; 321. a first channel; 322. a second channel; 3221. a thumb screw;

4. an inner surface fastener; 41. a support seat; 411. a third channel; 42. an inner surface compression bar; 421. fastening screws;

5. a carrier; 51. a boss portion;

6. a platen member; 61. pressing a plate; 611. a first through hole; 612. a second through hole; 62. fixing the rod; 621. a second lock nut; 63. adjusting a rod; 631. adjusting the nut; 632. a second spring.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

A sand casting scanner outer frame positioning tool clamp, please refer to fig. 3-4, is used for fixing the scanner outer frame 1 that the sand casting process is shaped and needs milling, the scanner outer frame 1 is a rectangular frame structure, as shown in fig. 2, and the scanner outer frame of this shape, it is the upper surface that it mills, because it is a frame structure, easy to appear the vibrations and scurring of the frame, so need clamp and then process, its casting process is a sand casting process at the same time, the machining tolerance is large, the frame may appear the situation of the thickness difference, so need the non-rigid positioning tool clamp to clamp and position; specifically, the tooling clamp comprises a fixing plate 2, wherein a plurality of outer surface fasteners 3, a plurality of inner surface fasteners 4, a plurality of bearing pieces 5 and a plurality of pressure plate pieces 6 are arranged on the upper surface of the fixing plate 2;

the bearing piece 5 is attached to the bottom surface of the scanner outer frame 1, the pressing plate piece 6 is attached to the top surface of the scanner outer frame 1 to form a fixed structure in the vertical direction, and the bearing piece, the pressing plate piece and the outer frame are in a multi-groove structure, so that the positions of the bearing piece, the pressing plate piece and the outer frame are in multi-groove positions, the minimum damage to a workpiece is guaranteed, and the clamping stability is improved; outer surface fastener 3 and the laminating of the surface of scanner frame 1, inner surface fastener 4 and the laminating of the internal surface of scanner frame, in order to form the ascending fixed knot of horizontal direction to construct, wherein, outer surface fastener 3 is including adjustable pressure bar 31, adjustable pressure bar 31 is used for supporting with the surface of scanner frame 1 and holds and form adjustable clamping structure, adjustable pressure bar can adopt if the telescopic link structure that can lock, or adopt the spring housing to establish on the pole, the terminal structure that adopts lock nut to lock.

As an optimized solution of the previous solution, please refer to fig. 4, the external surface fastener 3 includes a fixed seat 32 fixed on the fixed plate 2, the fixed seat 32 is provided with a first channel 321 for the adjustable pressing rod 31 to pass through, a first end 311 of the adjustable pressing rod 31 abuts against the external surface of the scanner frame 1, the external surface pressing rod 31 is sleeved with a first spring 312, one end of the first spring 312 abuts against the first end 311, the other end abuts against the fixed seat 32, and a second end 313 of the adjustable pressing rod 31 is provided with a first locking nut 314 for fixing; the first end part is formed to be abutted against the outer surface of the scanner frame by virtue of the restoring force of the first spring, the first locking nut is twisted to lock or loosen the adjustable pressing rod, when the adjustable pressing rod needs to press the outer frame, the pressing point which can be located is just the position where the sand hole exists during sand casting, so that small deformation can be generated, namely a large tolerance point, and the rigid positioning clamp can not contact the surface of the outer frame aiming at the points, but the first end part of the adjustable pressing rod is pushed to the scanner frame to be abutted by virtue of the elastic force of the first spring when the first locking nut is loosened, and then the first locking nut is screwed to be locked, because the elastic force can more accurately push the adjustable pressing rod, different from manual adjustment, the defect that the pressure is too high or the naked eye seems to be contacted exists in manual adjustment, and the spring is used for positioning, so that the positioning is accurate and proper, and the positioning and clamping device is suitable for positioning and clamping products with large tolerance.

As a preferable scheme, the fixing seat 32 is further provided with a second channel 322, the second channel 322 is communicated with the first channel 321 to form a three-way channel structure, a thumb screw 3221 is disposed in the second channel 322, an adjustable pressing rod 31 is disposed in the first channel 321, and the thumb screw 3221 presses the adjustable pressing rod 31 to form a locking structure; the thumb screw makes things convenient for the knob, and locking convenience very, the side of adjustable compression bar 31 is provided with flat slot 315, and thumb screw supports with flat slot 315 and holds to form anti-skidding structure, the position of the adjustable compression bar of synchronous adjustment when twisting first lock nut, lock when thumb nut just with the flat slot block, realize dual antiskid.

In this embodiment, please refer to fig. 3 and 5, the outer surface fasteners 3 and the inner surface fasteners 4 are uniformly distributed in the length direction and the width direction of the scanner outer frame 1, and the outer surface fasteners 3 and the inner surface fasteners 4 are correspondingly arranged, because of the frame structure, there are an inner frame opening and an outer portion, naturally, the outer surface fasteners are distributed on the outer periphery of the frame, the inner surface fasteners are distributed inside the frame opening, and for uniform stress, the corresponding arrangement is the optimal choice.

In this embodiment, referring to fig. 5, the inner surface fastener 4 is provided with a supporting seat 41, the supporting seat 41 is provided with a third channel 411 through which the inner surface pressing rod 42 passes, one end of the inner surface pressing rod 42 contacts with the inner surface of the scanner frame 1, and the other end is provided with a fastening screw 421 for locking, so as to form a rigid supporting structure.

In the embodiment, referring to fig. 6, the supporting member 5 is provided with a protruding portion 51 to abut against the bottom surface of the scanner outer frame 1, and the protruding portion 51 is in an arc-shaped structure, so that the arc-shaped structure has better rigidity and higher stability, and therefore, the arc-shaped structure is selected to contact the scanner outer frame more stably.

In the present embodiment, referring to fig. 7, the pressing plate member 6 includes a pressing plate 61, a fixing rod 62 and an adjusting rod 63, the fixing rod 62 and the adjusting rod 63 are both fixed on the fixing plate 2, the pressing plate 61 is provided with a first through hole 611 and a second through hole 612, the fixing rod 62 passes through the first through hole 61 and is provided with a second locking nut 621 for fixing; one end of the adjusting rod 63 passes through the second through hole 61, and the other end is provided with an adjusting nut 631, wherein the adjusting rod is sleeved with a second spring 632, a first end of the second spring 632 abuts against the fixing plate 2, and the other end abuts against the pressing plate 61; the top surface with adjusting clamp plate 61 and scanner frame 1 closely supports and holds, and because the frame has many grooves, so for the location convenience, the clamp plate shape commonly used is "L" type, has beaten first, the second through-hole on the long limit, and the minor face directly stretches into the tank bottom and fixes.

The utility model has the advantages that:

1. the adjustable pressing rod is used for adjusting the pressing distance, so that casting tolerance in the horizontal direction can be correspondingly compensated by using the adjustable pressing rod, the reliability and the stability of a clamping structure are improved, and the adjustable pressing rod is very suitable for large-tolerance products;

2. the pressing plate piece is attached to the top surface of the outer frame of the scanner to form a fixing structure in the vertical direction; the outer surface fastener is attached to the outer surface of the scanner outer frame, the inner surface fastener is attached to the inner surface of the scanner outer frame to form a fixing structure in the horizontal direction, and the vertical direction formed by the bearing piece and the pressing plate is used for positioning to perform positioning in three dimensions.

The above disclosure is only one or several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A positioning tool clamp for a sand casting scanner outer frame is used for fixing the scanner outer frame which is formed by a sand casting process and needs to be milled, and the scanner outer frame is of a rectangular frame structure; the device is characterized by comprising a fixing plate, wherein a plurality of outer surface fasteners, a plurality of inner surface fasteners, a plurality of bearing pieces and a plurality of pressing plate pieces are arranged on the upper surface of the fixing plate;

2. The sand casting scanner outer frame positioning tooling fixture of claim 1, wherein the outer surface fastener comprises a fixed seat fixed on the fixed plate, the fixed seat is provided with a first channel for the adjustable pressing rod to pass through, a first end of the adjustable pressing rod abuts against the outer surface of the scanner outer frame, the outer surface pressing rod is sleeved with a first spring, one end of the first spring abuts against the first end, the other end of the first spring abuts against the fixed seat, and a second end of the adjustable pressing rod is provided with a first locking nut for fixing; the restoring force of the first spring forms a structure for abutting the first end part and the outer surface of the outer frame of the scanner.

3. The sand casting scanner outer frame positioning tooling fixture of claim 2, wherein the fixing base is further provided with a second channel, the second channel is communicated with the first channel to form a three-way channel structure, a thumb screw is arranged in the second channel, the adjustable pressing rod is arranged in the first channel, and the thumb screw presses the adjustable pressing rod to form a locking structure.

4. The sand casting scanner outer frame positioning tooling fixture of claim 3, wherein a flat groove is formed in a side surface of the adjustable pressing rod, and the thumb screw abuts against the flat groove to form an anti-slip structure.

5. The sand casting scanner outer frame positioning tooling clamp of claim 1, wherein the outer surface fasteners and the inner surface fasteners are distributed in the length direction and the width direction of the scanner outer frame and are arranged correspondingly.

6. The sand casting scanner outer frame positioning tooling fixture of claim 5, wherein the inner surface fastener is provided with a supporting seat, the supporting seat is provided with a third channel for the inner surface pressing rod to pass through, one end of the inner surface pressing rod is in contact with the inner surface of the scanner outer frame, and the other end of the inner surface pressing rod is provided with a fastening screw for locking, so that a rigid supporting structure is formed.

7. The sand casting scanner outer frame positioning tooling fixture of claim 1, wherein the bearing member is provided with a protruding part which abuts against the bottom surface of the scanner outer frame, and the protruding part is of an arc arch structure.

8. The sand casting scanner outer frame positioning tool clamp as recited in claim 1, wherein the platen member comprises a platen, a fixing rod and an adjusting rod, the fixing rod and the adjusting rod are both fixed on the fixing plate, the platen is provided with a first through hole and a second through hole, the fixing rod passes through the first through hole and is fixed by a second locking nut; one end of the adjusting rod penetrates through the second through hole, the other end of the adjusting rod is provided with an adjusting nut, a second spring is sleeved on the adjusting rod, the first end of the second spring abuts against the fixing plate, and the other end of the second spring abuts against the pressing plate; so as to adjust the pressing plate to tightly abut against the top surface of the outer frame of the scanner.