CN203765504U - Combined clamp for machining semi-annular workpiece - Google Patents

Abstract

The utility model discloses a combined fixture for processing semi-circular workpieces. The combined fixture for processing semi-circular workpieces comprises: a base, including a horizontal part and a vertical part perpendicular to the horizontal part. At least two holes are provided on the straight part; at least two adjustment blocks, one side of each adjustment block is provided with a through hole corresponding to the hole on the base, and the other side contacts the outer ring surface of the semi-circular workpiece; At least two fasteners pass through the holes on the base and the corresponding through holes of the adjustment block, so that at least two adjustment blocks are fixed on the vertical part of the base; the arc clamping plate includes an arc surface and a plane , the arc surface contacts the inner ring surface of the semi-circular workpiece. According to the combined fixture for processing semi-circular workpieces of the utility model, accurate clamping, positioning and processing of semi-circular workpieces of different sizes on the vise can be realized, which is simple, convenient and easy to operate.

Description

Combination Fixture for Machining Semicircular Workpieces

technical field

The utility model belongs to the technical field of machine tool processing, and in particular relates to a combined fixture for processing semi-circular workpieces.

Background technique

The semi-circular workpiece is a kind of part which is commonly used in metallurgy and other industries and consumes a lot of money. Typically, semi-circular workpieces require the use of specialized molds for mass production. Such semi-circular workpieces are generally ordered from outside. However, there is a big difference between the batches of half-circle workpieces ordered and the actual installation size, and must be reprocessed according to the actual measured size before assembly. For example, in a steel rolling mill that rolls steel products, a semi-circular spare part called an overstock tape (also known as a resin tile, pressed using a mold machine) must be used, and its annual consumption is large. Since it is a purchased spare part, direct installation will cause the motor shaft to burn out, which will cause production stoppage. In addition, the backlog tapes ordered are processed in batches, and the actual installation parts will be worn to varying degrees, so there is uncertainty in the assembly size. Therefore, in order to meet the installation requirements, all ordered overstock tapes must be reprocessed according to the actual measured dimensions before assembly. Due to the large amount of processing, there are mainly the following two problems in clamping:

(1) It is extremely difficult to clamp the backlog of tape. Because the overstocked tape is extruded by a mold at high temperature, its surface is hard, but its quality is brittle and fragile. The processed part belongs to the semicircular end face, and the two tails of the semicircular ring are arc oblique lines (that is, two and a half pieces Rings cannot be merged into a complete ring), therefore, lathes cannot be clamped for turned faces. In addition, the entire end face needs to be processed, so the planer or milling machine cannot process the end face by using the pressure plate. If the arc end plane is processed by clamping with a bench vise, since the two jaws are parallel to each other, it will cause problems when clamping the semi-circular workpiece. Fracture of semi-circular workpiece. Therefore, it is impossible to use a bench vise to clamp, for example, the inner toroidal surface of the R330mm overstocked tape.

(2) The production site usually does not have professional machine tools to process the backlog of tape. According to the requirements of the processing drawings, the parts of the ordered overstock tape that need to be processed each time are processed according to the actual size of the installation survey. In addition, each part must be repaired during installation, so external commissioned repairs cannot be realized, and this situation also severely restricts the time for production and installation.

Utility model content

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a combined fixture for processing semi-circular workpieces that can realize the clamping and positioning of semi-circular workpieces on the vise.

According to the utility model, there is provided a combined fixture for processing a semi-circular workpiece, the combined fixture for processing a semi-circular workpiece comprises: a base including a horizontal part and a vertical part perpendicular to the horizontal part, At least two holes are provided on the vertical part; at least two adjustment blocks, one side of each adjustment block is provided with a through hole corresponding to the hole on the base, and the other side contacts the outer ring of the semi-circular workpiece surface; at least two fasteners pass through the holes on the base and the corresponding through holes of the adjustment block, so that at least two adjustment blocks are fixed on the vertical part of the base; the arc clamping plate includes an arc surface and the plane, the arc surface contacts the inner ring surface of the semi-circular workpiece, wherein the horizontal part of the base contacts the clamping inner surface of one side jaw of the vise used to clamp the semi-circular workpiece, and the arc clamp The flat surface of the tight plate contacts the clamping inner surface of the other side jaw of the vise used to clamp the semi-circular workpiece.

According to the present invention, the side of the at least two adjustment blocks which is in contact with the surface of the outer ring of the semi-circular workpiece can be a sloped surface.

According to the present invention, the sides provided with the through holes of the at least two adjustment blocks may be circular arc surfaces.

According to the present invention, two holes can be symmetrically arranged on both sides of the vertical part of the base, and the number of the adjusting blocks and the fasteners can be two.

According to the present invention, the at least two fasteners can be hexagon socket bolts.

According to the utility model, the height of the fastener can be lower than that of the semi-circular workpiece.

According to the present invention, the length of the plane of the circular arc clamping plate may be greater than the length of the clamping inner surface of the other side jaw of the vise used to clamp the semi-circular workpiece in contact with it.

According to the present invention, grooves may be provided on the horizontal part of the base.

According to the present invention, a keyway may be provided in the middle of the horizontal portion of the base.

According to the utility model, the combined fixture for processing semi-circular workpieces has the following advantages: first, the semi-circular workpiece is fixed by the arc surface of the arc clamping plate, and the plane of the arc clamping plate fixes the semi-circular The clamping inner surface of the ring workpiece and the jaw of the vise is clamped, so as to realize the end face cutting; second, the clamping inner surface of the base and the jaw maintains the parallelism, perpendicularity and other geometric tolerances of the workpiece, so that The processing accuracy of the parts is guaranteed during the fast clamping process; third, the semi-circular workpiece can be accurately positioned through the adjustment block to ensure the positioning accuracy of the workpiece clamping, and semi-circular workpieces of different sizes can be clamped; fourth, it is convenient and fast It perfectly solves the clamping and positioning problem of the semi-circular workpiece on the vise, which enables the small batch of different processing requirements of the semi-circular workpiece to be realized, and ensures the safety and effectiveness of the semi-circular workpiece during the processing process, saving the processing cost Moreover, the processing time is shortened, and the economic benefits are remarkable; fifth, the structure is simple and easy to manufacture, and only ordinary planers, drilling machines or slotting machines can be processed, and it is suitable for self-made general small and medium-sized machines, and its size can be adjusted according to the actual workpiece The size needs to be customized.

Description of drawings

Fig. 1 is a schematic diagram of an assembled state of an assembled jig for processing a semi-circular workpiece according to an exemplary embodiment of the present invention.

Fig. 2 is a front view of a base of a combination fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention.

Fig. 3 is a top view of the base of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention.

Fig. 4 is a left side view of the base of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention.

Fig. 5 is a front view of an adjusting block of a combination fixture for processing a semi-circular workpiece according to an exemplary embodiment of the present invention.

Fig. 6 is a side view of an adjusting block of a combined fixture for processing a semi-circular workpiece according to an exemplary embodiment of the present invention.

Fig. 7 is a front view of a circular arc clamping plate of a combination fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention.

Fig. 8 is a top view of the circular arc clamping plate of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention.

Detailed ways

Embodiments of the invention will now be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

Fig. 1 is a schematic diagram of an assembled state of an assembled jig for processing a semi-circular workpiece according to an exemplary embodiment of the present invention. Fig. 2 is a front view of the base of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention. Fig. 3 is a top view of the base of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention. Fig. 4 is a left side view of the base of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention. Fig. 5 is a front view of an adjusting block of a combination fixture for processing a semi-circular workpiece according to an exemplary embodiment of the present invention. Fig. 6 is a side view of an adjusting block of a combined fixture for processing a semi-circular workpiece according to an exemplary embodiment of the present invention. Fig. 7 is a front view of a circular arc clamping plate of a combination fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention. Fig. 8 is a top view of the circular arc clamping plate of the combined fixture for processing semi-circular workpieces according to an exemplary embodiment of the present invention.

As shown in FIGS. 1 to 8 , the combined fixture for processing a semi-circular workpiece according to an exemplary embodiment of the present invention may include: a base 1 including a horizontal portion 11 and a vertical portion 12 perpendicular to the horizontal portion 11 , two holes 13 are provided on the vertical part 12; two adjustment blocks 2, one side is provided with a through hole 23 corresponding to the hole 13 on the base 1, and the other side forms a contact semicircle workpiece 6 The contact surface of the outer ring surface; the fastener 3 passes through the hole 13 on the base 1 and the corresponding through hole 23 on the adjustment block 2, so that the adjustment block 2 is fixed on the vertical part 12 of the base 1; The arc clamping plate 4 includes an arc surface 41 and a plane 42 , and the arc surface 41 contacts the inner ring surface of the semi-circular workpiece 6 . Wherein, the horizontal portion 11 of the base 1 contacts the clamping inner surface of one side jaw 5 of the vise for clamping the semicircular workpiece 6, and the flat surface 42 of the circular arc clamping plate 4 contacts the clamping surface for clamping the semicircular workpiece 6. On the clamping inner surface of the jaw 7 on the other side of the vise of the workpiece 6 , the height of the fastener 3 is lower than that of the semicircular workpiece 6 .

Specifically, as shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the base 1 includes a horizontal portion 11 and a vertical portion 12 perpendicular to the horizontal portion 11, and the base 1 is in an "L" shape, which is conducive to Clamping of semi-circular workpiece 6. In addition, two holes 13 for arranging two adjustment blocks 2 may be symmetrically provided on both sides of the vertical portion 12 of the base 1 . Preferably, a groove is provided on the horizontal part 11 of the base 1, for example, a keyway 14 is provided in the middle of the horizontal part 11 of the base 1, and when the base 1 is held in hand, the hand can be inserted into the keyway 14 for convenience. Holding the base 1 can reduce the weight of the base 1 at the same time.

As shown in Fig. 1, Fig. 5 and Fig. 6, the side contacting with the outer ring surface of semicircle workpiece 6 of two adjustment blocks 2 can be slope surface 22, and this is because in the actual situation of semicircle workpiece 6 In the processing process, affected by the processing technology, the inner and outer ring surfaces of the semi-circular workpiece 6 are usually not perfect and smooth arc surfaces, especially the outer ring surface is often inclined, so when the two adjustment blocks 2 When the side in contact with the outer ring surface of the semi-circular workpiece 6 is correspondingly set as an inclined surface 22, the two adjustment blocks 2 can better contact the outer ring surface of the semi-circular workpiece 6, thereby facilitating clamping , there is no need to change the radian of the surface of the side of the adjustment block 2 contacting the semi-circular workpiece 6 due to the processing of semi-circular workpieces 6 of different sizes. In addition, preferably, the side of the two adjustment blocks 2 provided with the through holes 23 can be a circular arc surface 21, so that the two adjustment blocks 2 can be easily rotated around the fastener 3, but the utility model is not limited to Here, the sides of the two adjustment blocks 2 provided with the through holes 23 can be set in any shape as long as they can rotate around the fastener 3 . The number of regulating blocks 2 is not limited to two, for example, a third regulating block 2 may be arranged in the middle of two regulating blocks 2 .

In addition, the two fasteners 3 are preferably hexagon socket head bolts, so as to avoid damage to them during processing. When unscrewing the inner hexagonal bolt, the two adjustment blocks 2 are rotatable around the inner hexagonal bolt, and when the diameter of the semi-circular workpiece 6 is larger, the two adjustment blocks 2 can be respectively placed around the fastener 3 to Outside adjustment, on the contrary, when the diameter of semi-circular ring workpiece 6 is smaller, can respectively adjust two adjustment blocks 2 around fastener 3 to the inside, so that according to the exemplary embodiment of the utility model for processing semi-circular ring The combined fixture of the workpiece can clamp semi-circular workpieces 6 of different sizes without reprocessing the fixtures according to the size of the semi-circular workpiece 6 , and ensures the clamping and positioning accuracy of the semi-circular workpiece 6 . The height of the two fasteners 3 is lower than that of the semicircular workpiece 6 , otherwise the fasteners 3 are easily damaged when the semicircular workpiece 6 is processed.

As shown in Fig. 1, Fig. 7 and Fig. 8, the arc clamping plate 4 includes an arc surface 41 and a plane 42, the arc surface 41 and the plane 42 form a cylinder, and the section of the arc clamping plate 4 is arcuate, The height of the bow (ie, the height of the arc clamping plate 4) can be calculated by the following formula 1:

Formula 1

$\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; D.</span>}<span\; class="notranslate">\; -</span>\sqrt{{\mathrm{<span\; class="notranslate">\; D.</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; L</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}$

Wherein, D is the diameter of the arc, L is the chord length of the arc, and H is the height of the clamping plate 4 of the arc.

The size of the circular arc clamping plate 4 can be selected according to actual needs. Preferably, the length of the plane 42 of the circular arc clamping plate 4 (that is, the chord length L of the circular arc) is greater than the semicircle used for clamping in contact with it. The length of the clamping inner surface of the other side jaw 7 of the vise of the ring workpiece, so that the area of the arc surface contacted by the arc clamping plate 4 and the inner ring surface of the semi-circular workpiece 6 is larger and more Conducive to clamping.

When using the combination fixture for processing semi-circular workpieces according to an exemplary embodiment of the present utility model to clamp the semi-circular workpiece 6 on the bench vise, the horizontal part 11 of the base 1 contacts a part of the bench vise The clamping inner surface of the side jaw 5, the slope surface 22 of the two adjustment blocks 2 contact the outer ring surface of the semicircular workpiece 6, and the arc surface 41 of the arc clamping plate 4 contacts the inner surface of the semicircular workpiece 6. On the surface of the ring, the plane 42 of the circular arc clamping plate 4 contacts the clamping inner surface of the jaw 7 on the other side of the bench vise. Two planes parallel to each other are formed by the horizontal part 11 of the base 1 and the plane 42 of the circular arc clamping plate 4, so that the bench vise can clamp the semi Circular workpiece 6, and ensure the shape and position tolerances of the semi-circular workpiece 6 such as parallelism and perpendicularity, so as to ensure the processing accuracy of the part during the fast clamping process.

In addition, the size and processing material of the combined fixture for processing semi-circular workpieces according to the present invention can be selected according to actual needs, for example, it can be made of ordinary steel. The number of adjustment blocks, the type of fasteners, the shape of the groove on the base, etc. are not limited to the above-mentioned embodiments.

The following examples are only used to describe the utility model in detail, and do not limit the scope of the utility model in any way.

Example 1:

A combined fixture for processing a semi-circular workpiece according to Embodiment 1 of the present utility model as shown in FIGS. 1 to 8 is manufactured.

Specifically, first planing a piece of 45# steel plate into 450×50×120mm, and then planing its thickness to 15mm, to make a base 1 composed of a horizontal part 11 and a vertical part 12 perpendicular to the horizontal part 11 . Then, two m14 holes 13 are symmetrically processed on the vertical part 12 of the base 1 for installing two adjustment blocks 2 , and a keyway 14 of 100×25 mm is provided in the middle of the horizontal part 11 of the base 1 . Then, two adjustment blocks 2 are processed, planed into a square of 70×30×45mm with 45# steel, and then the positions of the arc surface 21 and the slope surface 22 are determined by scribing. Through-holes 23 are then provided by drilling or plunging arcs. Next, process two fasteners 3, and turn two m14×35mm hexagon socket bolts. Finally, the arc clamping plate is processed, and the 45# steel plate is planed into a square of 360×30×100mm, and the arc line is further determined by scribing. The height of the arc plate is calculated by the above formula 1 (D=424mm, L=360mm ).

Therefore, the combined fixture for processing semicircular workpieces according to the exemplary embodiment of the present utility model maintains the shape and position tolerances of the workpiece such as parallelism and perpendicularity, thereby ensuring the processing accuracy and assembly accuracy of the parts during the rapid clamping process. The positioning accuracy of the clamp can be clamped, and semi-circular workpieces of different sizes can be clamped, which conveniently and quickly solves the problem of clamping and positioning of semi-circular workpieces on the vise, so that small batches of semi-circular workpieces with different processing requirements can be realized. It also ensures the safety and effectiveness of the semi-circular workpiece during processing, saves processing cost and shortens the processing time. Self-made minicomputer, its size can be customized according to the actual size of the workpiece.

The present utility model is not limited to the above-mentioned embodiments, and various deformations and modifications can be made to the embodiments of the present utility model without departing from the spirit and scope of the present utility model.

Claims (9)

1. A combination fixture for processing semi-circular workpieces, characterized in that it comprises: a base comprising a horizontal portion and a vertical portion perpendicular to said horizontal portion, the vertical portion being provided with at least two holes; At least two adjustment blocks, one side of each adjustment block is provided with a through hole corresponding to the hole on the base, and the other side contacts the outer ring surface of the semi-circular workpiece; At least two fasteners pass through the holes on the base and the corresponding through holes of the adjustment block, so that at least two adjustment blocks are fixed on the vertical part of the base; The arc clamping plate includes an arc surface and a plane, and the arc surface contacts the inner ring surface of the semi-circular workpiece, Wherein, the horizontal part of the base contacts the clamping inner surface of one jaw of the vise used to clamp the semicircular workpiece, and the plane of the circular arc clamping plate contacts the other side of the vise used to clamp the semicircular workpiece The gripping inner surface of the jaws on one side. the 2. The combined fixture for processing semi-circular workpieces according to claim 1, characterized in that, the side of at least two adjustment blocks that is in contact with the outer ring surface of the semi-circular workpiece is a sloped surface. the 3. The combined fixture for processing semi-circular workpieces according to claim 2, characterized in that, the side of at least two adjustment blocks provided with through holes is an arc surface. the 4. The combined fixture for processing semi-circular workpieces according to claim 3, wherein two holes are symmetrically arranged on both sides of the vertical part of the base, and the quantity of the adjusting block and the fastener is two. the 5. The combined fixture for processing semi-circular workpieces according to claim 1, wherein the at least two fasteners are hexagon socket bolts. the 6. The combined fixture for processing a semi-circular workpiece according to claim 1, wherein the height of the fastener is lower than that of the semi-circular workpiece. the 7. The combined fixture for processing semi-circular workpieces according to claim 1, wherein the length of the plane of the circular arc clamping plate is greater than the vise used to clamp the semi-circular workpiece in contact with it The length of the clamping inner surface of the jaw on the other side. the 8. The combination fixture for processing semi-circular workpieces according to claim 1, characterized in that a groove is provided on the horizontal part of the base. the 9. The combined fixture for processing semi-circular workpieces according to claim 8, wherein a keyway is provided in the middle of the horizontal portion of the base. the