Tool for machining inclined plane of tungsten-based high-specific-gravity alloy trapezoidal strip

Abstract

The utility model belongs to the technical field of tools for machining trapezoidal strips, and particularly relates to a tool for machining inclined planes of tungsten-based high-specific-gravity alloy trapezoidal strips. A tool for machining an inclined face of a tungsten-based high-specific-gravity alloy trapezoidal strip comprises a die body, a first positioning block and a second positioning block, wherein the first positioning block and the second positioning block are located on the two opposite sides of the die body respectively and detachably fixed to the die body. A protruding strip extending upwards is arranged in the middle of the upper end of the die body. A first positioning groove and a second positioning groove which are used for containing workpieces are formed between the upper end of the first positioning block and the protruding strip and between the upper end of the second positioning block and the protruding strip respectively. The width of the protruding strip is gradually reduced from bottom to top, the upper end of the side wall, close to the protruding strip, of the first positioning block is parallel to the side wall, close to the first positioning block, of the protruding strip, and the upper end of the side wall, close to the protruding strip, of the second positioning block is parallel to the side wall, close to the second positioning block, of the protruding strip. The utility model has the advantages that the workpiece can be prevented from loosening, so that the processing precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling for processing trapezoidal bars, in particular to a tooling for processing the inclined surface of a tungsten-based high-density alloy trapezoidal bar. Background Art

[0002] Trapezoidal bars are processed by milling or grinding rectangular bars into trapezoidal bars with two inclined surfaces. When processing workpieces, CNC milling machines usually glue the workpieces to the machine table or workpiece fixing plate, but this makes it more troublesome to remove the workpiece and reduces the processing efficiency. Conventional trapezoidal bars with good magnetic permeability can be adsorbed by sinusoidal magnetic disks, but when the trapezoidal bars are tungsten-based high-density alloy trapezoidal bars, their magnetic permeability is small and cannot be magnetized; if the sinusoidal magnetic disk is to fix the tungsten-based high-density alloy trapezoidal bars, flat-nose pliers are required for auxiliary clamping, but flat-nose pliers are prone to angle deviation when clamping the workpiece, and the inclined surface processing error is large.

[0003] A Chinese patent with application number 202122610518.5 discloses a bevel processing fixture for a milling machine, including a main body, an angle adjustment pad, a workpiece groove, a fastening bolt, and an anchor screw hole. A bevel is provided on the side of the main body, and a fastening bolt is provided on the bevel. A workpiece groove is provided in the middle of the main body, and an angle adjustment pad is provided in the workpiece groove. An anchor screw hole is provided at the bottom of the main body.

[0004] The above solution fixes the workpiece by setting a fixture, so that the workpiece is milled on the inclined surface by a milling machine. Although the problem of fixing and positioning the workpiece can be solved, the workpiece is fixed by the end of the fastening bolt contacting the end face of the workpiece when positioning the workpiece. This method is easy to loosen the workpiece when the inclined surface is processed, which is easy to cause deviation in processing accuracy. Utility Model Content

[0005] The utility model aims to provide a tool for machining the inclined surface of a tungsten-based high-density alloy trapezoidal strip, which can prevent the workpiece from loosening and thus improve the machining accuracy.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tooling for processing the inclined surface of a tungsten-based high-density alloy trapezoidal bar, comprising a mold body and a first positioning block and a second positioning block respectively located on opposite sides of the mold body and detachably fixed to the mold body; an upwardly extending convex strip is provided in the middle of the upper end of the mold body, and a first positioning groove and a second positioning groove for accommodating a workpiece are respectively formed between the upper end of the first positioning block and the convex strip and between the upper end of the second positioning block and the convex strip; the width of the convex strip gradually decreases from bottom to top, and the upper end of the side wall of the first positioning block close to the convex strip is parallel to the side wall of the convex strip close to the first positioning block, and the upper end of the side wall of the second positioning block close to the convex strip is parallel to the side wall of the convex strip close to the second positioning block.

[0007] When the workpiece to be processed needs to be processed, the workpiece to be processed is first placed in the first positioning groove, and then the first positioning block is fixed to the mold body, so that the workpiece to be processed is placed obliquely in the first positioning groove, and the circumferential outer wall of the workpiece to be processed contacts the groove wall of the first positioning groove. The part of the workpiece to be processed that needs to be processed is exposed outside the first positioning groove, and then the milling machine performs milling on the exposed part of the workpiece. After completing the inclined surface processing of one side of the workpiece to be processed, the operator removes the first positioning block, and then places the workpiece into the second positioning groove, fixes the second positioning block to the mold body, and repeats the above operation to complete the inclined surface processing of the other side of the workpiece, thereby processing the workpiece into a trapezoidal strip-shaped workpiece.

[0008] The mold body and the milling machine can be adsorbed by a magnetic table or fixed by screws. The width of the convex strip gradually decreases from bottom to top so that the side walls of the convex strip are inclined. The workpiece is in a rectangular strip shape before processing, and the circumferential outer wall of the workpiece fits and positions the inclined side walls, so that the workpiece to be processed is placed obliquely in the first positioning groove and the second positioning groove. The first positioning block and the second positioning block can be fixed to the mold body by screws or pins. Since the two inclined surfaces of the trapezoidal strip have different inclinations, the first positioning groove and the second positioning groove are set to process the two inclined surfaces with different inclinations. The two inclined surfaces of the trapezoidal strip can be processed by one tool, which has a more compact structure and higher efficiency.

[0009] This solution uses the inner walls of the first positioning block and the second positioning block to contact and press the workpiece. Compared with the method of tightening bolts, the contact area is larger, so that the workpiece belt will not loosen during milling, thereby improving the accuracy of milling. And the surface-to-surface contact method will not scrape the outer surface of the workpiece. At the same time, the milling cutter can simultaneously mill the inclined surfaces of two workpieces to be processed, which is more efficient.

[0010] Preferably, the widths of the first positioning block and the second positioning block gradually decrease from top to bottom, and the mold body is provided with an inclined surface that cooperates with the first positioning block and the second positioning block.

[0011] The first positioning block and the second positioning block are in surface-to-surface contact with the mold body to improve the positioning accuracy of the first positioning block and the second positioning block.

[0012] Preferably, the first positioning block and the second positioning block are each provided with at least two fixing holes extending in the horizontal direction, the mold body is provided with internal threaded holes corresponding to the fixing holes one by one, and the fastening bolts pass through the fixing holes and are threadedly engaged with the internal threaded holes.

[0013] The first positioning block and the second positioning block are detachably fixed to the mold body by tightening bolts.

[0014] Preferably, the first positioning block, the second positioning block and the mold body are each provided with at least two positioning pin holes extending in the horizontal direction, and the positioning pin holes are equipped with positioning pins.

[0015] The first positioning block and the second positioning block are further positioned with respect to the mold body by means of positioning pins, thereby improving accuracy.

[0016] Preferably, the lower ends of the two opposite sides of the convex strip are provided with upwardly open avoidance grooves, and the avoidance grooves are used to make way for the corners of the workpiece to be processed.

[0017] The avoidance groove is used to avoid the corners of the workpiece to avoid burrs. The corners of the workpiece may have their own deviations. If the avoidance groove is not set, the corner of the workpiece will be at the connection between the inner groove wall and the bottom groove wall, which will cause the entire workpiece to deviate, resulting in incomplete contact between the circumferential outer wall of the workpiece and the groove wall. By preventing the corner of the workpiece from contacting the tooling, the circumferential outer wall of the workpiece can be guaranteed to contact the groove wall.

[0018] Preferably, when the first positioning block and the second positioning block are fixed to the mold body, the upper end surfaces of the first positioning block and the second positioning block are flush with the upper end surfaces of the convex strips of the mold body.

[0019] The flush upper end surface can make way for the milling cutter, making it convenient for the milling cutter to process the portion exposed outside the first positioning groove and the second positioning groove.

[0020] Preferably, the distance between the first positioning block and the convex strip is equal to the distance between the second positioning block and the convex strip.

[0021] It is ensured that when the inclined surfaces on both sides of the workpiece to be processed are processed, the circumferential outer wall of the workpiece to be processed can be in close contact with the groove walls of the first positioning groove and the second positioning groove.

[0022] The utility model has the following advantages: the inner wall of the first positioning block and the second positioning block contacts and presses the workpiece, and compared with the method of fastening bolts, the contact area is larger, so that the workpiece will not loosen during milling, thereby improving the accuracy of milling. And the outer surface of the workpiece will not be scraped. At the same time, the milling cutter can perform inclined milling on two workpieces to be processed at the same time, which is more efficient. And it is fixed by fastening bolts, and the positioning pin helps positioning, further increasing the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the utility model.

[0025] Figure 3This is a cross-sectional view of the workpiece during machining.

[0026] Figure 4 This is the front view of the workpiece after processing.

[0027] Reference numerals: mold body 1 , first positioning groove 11 , second positioning groove 12 , first positioning block 2 , second positioning block 3 , convex strip 4 , positioning pin hole 5 , fixing hole 6 , internal thread hole 61 , avoidance groove 7 , workpiece 100 to be processed. DETAILED DESCRIPTION

[0028] The utility model is further described below based on the accompanying drawings and specific embodiments.

[0029] like Figure 4 As shown, Figure 4 It is a tungsten-based high-density alloy trapezoidal bar after the workpiece to be processed is completed.

[0030] like Figures 1 to 3 As shown, this embodiment discloses a tool for processing the inclined surface of a tungsten-based high-density alloy trapezoidal strip, comprising a mold body 1, on which a first positioning groove 11 and a second positioning groove 12 opening upward are provided, and between the first positioning groove 11 and the second positioning groove 12, a convex strip 4 extending upward is provided, and the width of the convex strip 4 gradually decreases from bottom to top so that the opposite side walls of the convex strip 4 are inclined surfaces, and the side walls of the convex strip 4 are the inner groove walls of the first positioning groove 11 and the second positioning groove 12, respectively. The mold body 1 also includes two detachably fixed first positioning blocks 2 and second positioning blocks 3. A first positioning groove 11 is formed between the first positioning block 2 and the convex strip 4, and the inner side wall of the first positioning block 2 is the outer groove wall of the first positioning groove 11; a second positioning groove 12 is formed between the second positioning block 3 and the convex strip, and the inner side wall of the second positioning block 3 is the outer groove wall of the second positioning groove 12. The first positioning groove 11 and the second positioning groove 12 are both arranged obliquely so that the workpiece 100 to be processed is placed obliquely therein, and the part of the workpiece 100 to be processed that needs to be processed is exposed outside the first positioning groove 11 and the second positioning groove 12 .

[0031] like Figure 1 and Figure 3As shown, the inner side walls of the first positioning block 2 and the second positioning block 3 are both inclined surfaces, and the width of the first positioning block 2 and the second positioning block 3 gradually decreases from top to bottom. The surface of the mold body 1 that contacts the inner side walls of the first positioning block 2 and the second positioning block 3 is an inclined surface. The first positioning block 2 and the second positioning block 3 are both provided with two fixing holes 6 extending in the horizontal direction. The fixing holes 6 are through holes and penetrate the first positioning block 2 and the second positioning block 3. The mold body 1 is provided with an internal threaded hole 61 corresponding to the fixing hole 6. The internal threaded hole 61 extends in the horizontal direction. The fastening bolt (not shown in the figure) passes through the fixing hole 6 and is threadedly matched with the internal threaded hole 61 to achieve detachable fixation between the first positioning block 2 and the second positioning block 3 and the mold body 1. The first positioning block 2 and the second positioning block 3 and the mold body 1 are all provided with a positioning pin hole 5 extending in the horizontal direction. The positioning pin hole 5 is matched with a positioning pin (not shown in the figure). When the first positioning block 2 and the second positioning block 3 are fixed to the mold body 1, the upper end surface of the first positioning block 2 and the second positioning block 3 is flush with the upper end surface of the convex strip 4.

[0032] like Figure 3 As shown, the lower ends of the opposite sides of the convex strip are provided with upwardly opening avoidance grooves 7, the cross section of the avoidance grooves 7 is circular, and the avoidance grooves 7 are used to make way for the corners of the workpiece 100 to be processed, and the distance between the first positioning block 2 and the convex strip 4 is equal to the distance between the second positioning block 3 and the convex strip 4. The angles between the inner and outer groove walls of the first positioning groove 11 and the bottom groove wall are both 90°, and the angles between the inner and outer groove walls of the second positioning groove 12 and the bottom groove wall are both 90°. The inclination angle of the first positioning groove 11 is different from the inclination angle of the second positioning groove 12.

[0033] like Figures 1 to 3As shown, in actual operation, the operator first fixes the mold body 1 on the workbench of the milling machine by screws (not shown in the figure). The operator places the rectangular workpiece 100 to be processed in the first positioning groove 11, and then fixes the first positioning block 2 with the mold body 1, passes the fixing bolt (not shown in the figure) through the fixing hole 6 and is threadedly matched with the internal threaded hole 61 of the mold body 1, and inserts the positioning pin (not shown in the figure) into the positioning pin hole 5. The part of the workpiece 100 to be processed that needs to be processed is exposed outside the first positioning groove 11. Then, the part of the workpiece 100 to be processed that is exposed outside the first positioning groove 11 is processed by a milling cutter. After the workpiece 100 to be processed completes the processing of the inclined surface on one side, the workpiece 100 to be processed is placed in the second positioning groove 12. The second positioning block is fixed with the mold body 1 in the same way as the above operation, so that the part of the other side of the workpiece 100 to be processed that needs to be processed is exposed outside the second positioning groove 12, and then the part of the workpiece 100 to be processed that is exposed outside the second positioning groove 12 is processed by a milling cutter. Thus, the processing of the inclined surfaces on both sides of the workpiece 100 to be processed is completed, so that the rectangular workpiece to be processed is processed into a trapezoidal workpiece. While the workpiece in the second positioning groove 12 is being processed, a new workpiece to be processed is also placed in the first positioning groove 11, so that the milling cutter can simultaneously mill the new workpiece to be processed in the first positioning groove 11 and the workpiece to be processed in the second positioning groove 12.

Claims

1. A tool for processing the inclined surface of a tungsten-based high-density alloy trapezoidal strip, comprising a mold body and a first positioning block and a second positioning block respectively located on opposite sides of the mold body and detachably fixed to the mold body; characterized in that: A convex strip extending upward is provided in the middle of the upper end of the mold body, and a first positioning groove and a second positioning groove for accommodating a workpiece are respectively formed between the upper end of the first positioning block and the convex strip, and between the upper end of the second positioning block and the convex strip; the width of the convex strip gradually decreases from bottom to top, and the upper end of the side wall of the first positioning block close to the convex strip is parallel to the side wall of the convex strip close to the first positioning block, and the upper end of the side wall of the second positioning block close to the convex strip is parallel to the side wall of the convex strip close to the second positioning block.

2. The tooling for processing the inclined surface of the tungsten-based high-density alloy trapezoidal strip according to claim 1 is characterized in that: The widths of the first positioning block and the second positioning block gradually decrease from top to bottom, and the mold body is provided with an inclined surface that cooperates with the first positioning block and the second positioning block.

3. The tooling for processing the inclined surface of the tungsten-based high-density alloy trapezoidal strip according to claim 1 is characterized in that: The first positioning block and the second positioning block are each provided with at least two fixing holes extending in the horizontal direction, the mold body is provided with internal threaded holes corresponding to the fixing holes one by one, and the fastening bolts pass through the fixing holes and are threadedly matched with the internal threaded holes.

4. The tooling for processing the inclined surface of the tungsten-based high-density alloy trapezoidal strip according to claim 1, 2 or 3, characterized in that: The first positioning block, the second positioning block and the mold body are all provided with at least two positioning pin holes extending in the horizontal direction, and the positioning pin holes are matched with positioning pins.

5. The tooling for processing the inclined surface of the tungsten-based high-density alloy trapezoidal strip according to claim 1, 2 or 3, characterized in that: The lower ends of the two opposite sides of the convex strip are provided with upwardly open avoidance grooves, and the avoidance grooves are used to make way for the corners of the workpiece to be processed.

6. The tooling for processing the inclined surface of the tungsten-based high-density alloy trapezoidal strip according to claim 1, 2 or 3, characterized in that: When the first positioning block and the second positioning block are fixed to the mold body, the upper end surfaces of the first positioning block and the second positioning block are flush with the upper end surfaces of the convex strips of the mold body.

7. The tooling for processing the inclined surface of the tungsten-based high-density alloy trapezoidal strip according to claim 1, 2 or 3, characterized in that: The distance between the first positioning block and the convex strip is equal to the distance between the second positioning block and the convex strip.

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