Cylindrical workpiece side extrusion clamp

Abstract

The utility model discloses a cylindrical workpiece side extrusion clamp, including bottom plate, be located the support block of bottom plate upper surface and be located the support seat of left and right sides of support block, the upper surface of support block has inverted trapezoid and is used for the positioning clamping groove of clamping cylindrical workpiece, a pair of extrusion block for the cylindrical workpiece in positioning clamping groove is pressed tightly and is equipped with on two support seat, the contact surface of extrusion block and cylindrical workpiece is arc surface, still include the pad block for placing in positioning groove and the processing plane formed with the cylindrical workpiece after processing contact, can pad high cylindrical workpiece. In this way, the positioning groove of support block upper surface is equipped with and can be with cylindrical workpiece bottom profile and is pasted together, and the left and right displacement of workpiece is limited, and extrusion block can play the compact fixing effect to workpiece. In addition, through the pad block of additional, make cylindrical workpiece can always keep suitable processing height.

Description

Technical Field

[0001] This utility model relates to the field of fixtures, specifically to a side extrusion fixture for cylindrical workpieces. Background Technology

[0002] Cylindrical workpieces, as fundamental components, are widely used in many industries such as automobiles and construction machinery. When milling cylindrical workpieces, it is often necessary to machine specific planar structures, and the parallelism of the resulting symmetrical planes is subject to extremely stringent requirements. This is because whether the parallelism of the symmetrical planes meets the standards directly affects the accuracy of subsequent assembly processes. If the parallelism error exceeds the allowable range, it will lead to uneven clearances between parts, and in severe cases, may even cause equipment malfunctions, abnormal noises, shorten equipment lifespan, or even safety accidents. Therefore, ensuring the parallelism of the symmetrical planes of cylindrical workpieces is a key quality control point in the milling process.

[0003] However, in current on-site milling processes, most companies still rely on ordinary bench vises to clamp and hold cylindrical workpieces. While ordinary bench vises offer some clamping capability, the surface of a cylindrical workpiece is curved, and the contact area between the vise jaws and the workpiece is flat, resulting in a small contact area and difficulty in achieving a stable positioning effect during clamping. Under the clamping force, the cylindrical workpiece is prone to displacement or deflection, failing to maintain its initial positioning posture. This displacement not only leads to deviations in the machining position but also makes it difficult to ensure that the parallelism of the machined surfaces meets design requirements. Utility Model Content

[0004] Based on this, and in response to the aforementioned technical problems, this utility model provides a cylindrical workpiece side extrusion fixture.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A cylindrical workpiece side extrusion fixture includes a base plate, a support block disposed on the upper surface of the base plate, and support seats located on the left and right sides of the support block. The upper surface of the support block has an inverted trapezoidal positioning groove for clamping the cylindrical workpiece. The two support seats are provided with a pair of extrusion blocks for pressing the cylindrical workpiece in the positioning groove. The contact surface between the extrusion block and the cylindrical workpiece is an arc surface. The fixture also includes a pad block for placing in the positioning groove and contacting the machining plane formed by the machined cylindrical workpiece to elevate the cylindrical workpiece.

[0007] By employing the above-described scheme, the coordinated action of the support block and the pressing block provides a stable clamping grip for the cylindrical workpiece, reducing the risk of workpiece displacement during processing. Specifically, the upper surface of the support block features a positioning groove that conforms to the bottom contour of the cylindrical workpiece, limiting its left and right displacement and preventing machining reference shifts caused by bottom wobbling. The contact surface between the pressing block and the workpiece is an arc surface, which matches the outer circumference of the cylindrical workpiece, increasing the clamping contact area and preventing slippage, thus providing reliable clamping in both vertical and circumferential directions. Furthermore, the added pads ensure that the cylindrical workpiece maintains a suitable machining height at all times.

[0008] In a specific embodiment of this utility model: the contact surface is a toothed surface. In this way, the teeth of the toothed surface can firmly engage with the outer circle of the workpiece, preventing the workpiece from rotating due to vibration during processing.

[0009] In a specific embodiment of this utility model: the extrusion block is mounted on the support base via an installation block, and the installation block is provided with a position adjustment structure for adjusting the position of the extrusion block.

[0010] In a specific embodiment of this utility model: the position adjustment structure includes bolts, the opposing surfaces of the extrusion block and the mounting block are inclined planes, the extrusion block has a waist-shaped hole, and the mounting block has a bolt hole corresponding to the position of the waist-shaped hole. The end of the bolt passes through the waist-shaped hole and is tightened in the bolt hole to fix the extrusion block to the mounting block. Thus, when adjusting the position of the extrusion block, the sliding contact of the inclined planes allows the extrusion block to move horizontally while simultaneously generating vertical displacement. This matches the outer curvature of cylindrical workpieces of different sizes, ensuring a tight fit between the arc surface of the extrusion block and the outer surface of the workpiece, preventing slippage due to insufficient fit.

[0011] In a specific embodiment of this utility model: a positioning block is also provided on the base plate in front of the support block. The positioning block can be used to position the workpiece.

[0012] In summary, the fixture structure of this utility model is simple. During operation, the workpiece only needs to be placed into the positioning groove of the support block, and then clamped by the pressing blocks on both sides, making the operation convenient. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of the cylindrical workpiece side extrusion fixture of this utility model;

[0015] Figure 2 This shows the pad being placed in the positioning slot;

[0016] Figure 3 This illustrates placing a cylindrical workpiece into a positioning slot;

[0017] Figure 4 This shows the placement of a pad into a positioning groove, which then contacts the machined surface formed by the machined cylindrical workpiece.

[0018] Figure 5 It shows a cylindrical workpiece;

[0019] Figure 6 This illustrates machining the upper end face of a cylindrical workpiece to form a flat surface;

[0020] Figure 7 This illustrates machining the lower end face of a cylindrical workpiece to form a flat surface. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model is a cylindrical workpiece side extrusion fixture, including a base plate 10, a support block 11 disposed on the upper surface of the base plate 10, and support seats 122 located on the left and right sides of the support block 11. The upper surface of the support block 11 has an inverted trapezoidal positioning groove 111 for clamping the bottom of the cylindrical workpiece 9. The two support seats 122 are provided with a pair of extrusion blocks 124 for pressing the cylindrical workpiece 9. The contact surface between the extrusion block 124 and the cylindrical workpiece 9 is an arc surface 121. It also includes a pad block 13 for placing in the positioning groove 111 and contacting the processed surface 901 formed by the processed cylindrical workpiece, which can elevate the cylindrical workpiece 9. The shape of the outer contour of the pad block 13 is adapted to the positioning groove 111.

[0023] In this way, the coordinated action of the support block and the extrusion block provides a stable clamping for the cylindrical workpiece, reducing the risk of workpiece displacement during processing. The support block has a positioning groove on its upper surface that fits snugly against the bottom contour of the cylindrical workpiece, limiting its lateral displacement and preventing machining reference shifts caused by bottom wobbling. The contact surface between the extrusion block and the workpiece is an arc surface that matches the outer circumference of the cylindrical workpiece, increasing the clamping contact area and preventing slippage, thus providing reliable clamping in both vertical and circumferential directions. Furthermore, the added pads ensure the cylindrical workpiece maintains a suitable machining height, facilitating processing. Here, two support blocks 11 can be used, spaced apart front and rear. Support seats 122 and extrusion blocks 124 are respectively fitted to the sides of the two support blocks 11.

[0024] In this embodiment, the contact surface is a toothed surface. In this way, the teeth of the toothed surface can firmly engage with the outer circumference of the cylindrical workpiece, preventing the workpiece from rotating due to vibration during the machining process.

[0025] like Figure 1 As shown, in this embodiment, the compression block 124 is mounted on the support base 122 via the mounting block 123.

[0026] In this embodiment, the mounting block 123 is provided with a position adjustment structure for adjusting the position of the pressing block 124. This position adjustment structure includes bolts 15. The bottom of the pressing block 124 and the top of the mounting block 123 have mutually cooperating inclined surfaces with a lower inner side and a higher outer side. The pressing block 124 has a waist-shaped hole 16. A bolt hole is provided on the mounting block 123 at the position corresponding to the waist-shaped hole 16. During assembly, the pressing block is placed on the mounting block, and then the end of the bolt 15 is passed through the waist-shaped hole 16 and tightened into the bolt hole to fix the pressing block 124 to the mounting block 123. Thus, when the workpiece 9 is placed in the positioning groove 111 of the support block 11, tightening the bolt 15 causes the pressing block 124 to slide inward and downward, thereby pressing it against the circumferential surface of the cylindrical workpiece 9. Then, tightening the bolt 15 again allows the two pressing blocks 124 to press and fix the workpiece located on the support block, thereby preventing the workpiece from slipping during subsequent processing.

[0027] In this embodiment, a positioning block 14 is also provided on the base plate 10 in front of the support block 11. The positioning block 14 can position the workpiece.

[0028] The above describes a cylindrical workpiece side extrusion fixture according to this utility model. During operation, it is used as follows... Figure 5The cylindrical workpiece 9 is placed into the positioning groove 111 of the support block 11, with the end of 9 pressed against the positioning block 14. Then, the bolt 15 is loosened, and the position of the pressing block 124 is adjusted so that it presses against the circumferential surface of the cylindrical workpiece 9. Finally, the bolt is tightened to clamp the cylindrical workpiece 9, preventing displacement during processing. Figure 3 and Figure 6 As shown, the upper end face of the cylindrical workpiece 9 is then machined to form the required plane 901, completing the machining process of the upper end face of the cylindrical workpiece. After the upper end face is machined, the bolts 15 used to fix the extrusion block 124 are loosened, releasing the clamping state of the extrusion block 124 on the cylindrical workpiece 9. Then, the pad 13 is placed into the positioning groove 111 of the support block 11, and the cylindrical workpiece 9 is rotated so that the machined plane 901 contacts the upper surface of the pad 13. At this time, the original lower end face of the cylindrical workpiece 9 will flip to the upper side for subsequent lower end face machining. Figure 4 and Figure 7 As shown, after the workpiece is flipped, the position of the extrusion block 124 is adjusted again by the position adjustment structure to ensure that the contact surface 121 of the extrusion block 124 is in close contact with the outer peripheral surface of the cylindrical workpiece 9. Then, the bolt 15 is tightened to re-clamp the cylindrical workpiece 9. Finally, the original lower end face on the upper side of the cylindrical workpiece 9 is machined to form the required plane 901, and the machining of the cylindrical workpiece 9 is completed.

[0029] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A side-extrusion fixture for cylindrical workpieces, characterized in that, The device includes a base plate, a support block disposed on the upper surface of the base plate, and support seats located on the left and right sides of the support block. The upper surface of the support block has an inverted trapezoidal positioning groove for clamping the cylindrical workpiece. The two support seats are provided with a pair of extrusion blocks for pressing the cylindrical workpiece in the positioning groove. The contact surface between the extrusion block and the cylindrical workpiece is an arc surface. The device also includes a pad block for placing in the positioning groove and contacting the machining plane formed by the machined cylindrical workpiece, which can elevate the cylindrical workpiece.

2. The cylindrical workpiece side extrusion fixture according to claim 1, characterized in that, The contact surface is a toothed surface.

3. The cylindrical workpiece side extrusion fixture according to claim 1, characterized in that, The extrusion block is mounted on the support base via an installation block, and the installation block is provided with a position adjustment structure for adjusting the position of the extrusion block.

4. The cylindrical workpiece side extrusion fixture according to claim 3, characterized in that, The position adjustment structure includes bolts, the opposing surfaces of the extrusion block and the mounting block are inclined, the extrusion block has a waist-shaped hole, and the mounting block has a bolt hole at the position corresponding to the waist-shaped hole. The end of the bolt passes through the waist-shaped hole and is tightened in the bolt hole to fix the extrusion block on the mounting block.

5. The cylindrical workpiece side extrusion fixture according to claim 1, characterized in that, A positioning block is also provided on the base plate in front of the support block.

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