Lathe fixture for clamping irregular sample

Abstract

A lathe fixture for clamping an irregular sample belongs to the technical field of machining fixtures and is used for clamping the irregular sample by a lathe. According to the technical scheme, a plurality of sliding holes are evenly distributed in the disc face of a disc of the clamping disc, the lower portions of a plurality of clamping columns are inserted into the sliding holes, the clamping columns are in sliding fit with the sliding holes, springs are installed in the clamping columns, the lower ends of the springs abut against the bottom face of the disc, and a fixed round handle is welded to the center of the bottom face of the clamping disc. The fixed round handles of the two clamping discs are respectively clamped in center holes of a chuck and a tailstock of the lathe, two ends of the irregular sample are respectively placed among the top surfaces of the plurality of clamping columns of the two clamping discs of the chuck and the tailstock, and the top surfaces of the plurality of clamping columns of the two clamping discs are connected with the two ends of the irregular sample in a pressing manner. The clamp is simple in structure and convenient to use, and can be conveniently mounted on a lathe to clamp an irregular sample, so that the processed sample is fixed in the radial direction and the axial direction, looseness is avoided, and the processing precision is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fixture when the lathe processes irregular test piece belongs to mechanical processing fixture technical field. BACKGROUND

[0002] Mechanical processing is a kind of process using mechanical equipment to process mechanical parts, aims to change the size, shape, surface property or performance of mechanical parts by mechanical equipment, makes it meet the design and functional requirements, general mechanical equipment includes lathe, drilling machine, milling machine, planer, grinding machine, punch press and numerical control machine tool and so on Various machine tooling equipment, these machine tooling equipment can complete including cutting, stamping, cutting etc. Operation. In the machining operation process of machine tool to mechanical parts, clamping fixture is needed to clamp the processed parts, and the fixture makes the position of the processed parts remain stable during the machining process, guarantees the accuracy of processing.

[0003] Lathe is the most used equipment in various processing machine tools, and the fixture used in lathe machining is generally adjustable three-jaw chuck or four-jaw chuck, the chuck can be conveniently used for circular or bar material machining, but if the surface of the clamped machining material is irregular, the chuck of lathe cannot be clamped stably, and the lathe cannot be machined. The usual solution is to pad a pad between the irregular material and the chuck claw of the chuck, for fixing the machined material, but this method needs to use different pads, and the clamping is not firm enough, and loosening may occur during cutting, causing machining failure, and even safety accidents. Therefore, for irregular material turning, it is necessary to design a special fixture to realize turning. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to provide a lathe fixture for clamping irregular test piece, the fixture can be conveniently installed on the three-jaw or four-jaw chuck and tailstock of lathe, the fixture of chuck and tailstock clamps irregular test piece together, and the chuck and tailstock can relatively clamp the machined test piece in axial direction, so that the machined test piece is fixed in radial and axial directions, avoids loosening, and guarantees the accuracy of processing.

[0005] The technical scheme for solving the above technical problem is:

[0006] A lathe fixture for clamping irregular samples, comprising two identical clamping discs, each clamping disc consisting of a disc, clamping columns, springs and a fixed round handle, the disc surface is uniformly distributed with a plurality of sliding holes, the lower part of the plurality of clamping columns is inserted into the sliding hole, the clamping column and the sliding hole are in sliding fit, the spring is installed in the clamping column, the lower end of the spring is on the bottom surface of the disc, the bottom surface of the clamping disc is welded with a fixed round handle, the fixed round handle of the two clamping discs is clamped in the center hole of the chuck and the tailstock of the lathe respectively, the two ends of the irregular sample are placed between the top surface of the plurality of clamping columns of the two clamping discs of the chuck and the tailstock, and the top surface of the plurality of clamping columns of the two clamping discs is in pressure connection with the two ends of the irregular sample.

[0007] The lathe fixture for clamping irregular samples, the disc of the clamping disc consists of a bottom plate, a side wall, a top plate and connecting bolts, the bottom plate and the top plate are identical circular plates, the side wall is a circular ring, the lower end of the side wall is vertically welded and connected with the circumferential edge of the bottom plate, the top plate is placed on the upper end of the side wall, the plate surface of the bottom plate has a plurality of screw holes, the plate surface of the top plate has a plurality of through holes corresponding to the screw holes of the bottom plate, the connecting bolts pass through the through holes of the top plate and the screw holes of the bottom plate to fixedly connect the top plate and the bottom plate, the plate surface of the top plate is uniformly distributed with a plurality of sliding holes, the clamping column is installed in the sliding hole, the plate surface of the bottom plate has a plurality of spring grooves, the plurality of spring grooves correspond to the sliding holes of the top plate respectively, and the lower ends of the plurality of springs are placed in the plurality of spring grooves respectively.

[0008] The lathe fixture for clamping irregular samples, the clamping column consists of a movable sleeve and a rubber cap, the movable sleeve is a closed cylindrical body at the upper end, the outer diameter of the movable sleeve matches the diameter of the sliding hole of the top plate of the disc, the movable sleeve and the sliding hole are in sliding fit, the rubber cap is sleeved on the upper end of the movable sleeve, the spring is placed in the inner hole of the movable sleeve, and the lower end of the spring extends out of the lower end of the movable sleeve and is embedded in the spring groove of the bottom plate of the disc.

[0009] The lathe fixture for clamping irregular samples, the lower end of the movable sleeve is provided with an outwardly bent limiting circular ring, the limiting circular ring is perpendicular to the pipe wall of the movable sleeve, the outer diameter of the limiting circular ring is greater than the diameter of the sliding hole of the top plate of the clamping disc, and the limiting circular ring is clamped below the plate surface of the top plate of the disc.

[0010] The lathe fixture for clamping irregular samples, the rubber cap is a closed cylindrical body at the upper end, the inner hole diameter of the cylindrical body matches the outer diameter of the movable sleeve, the inner hole of the cylindrical body of the rubber cap is sleeved on the upper end of the movable sleeve, and the upper end of the rubber cap is in abutting connection with the end surface of the irregular sample.

[0011] The beneficial effects of the present application are:

[0012] The utility model discloses a clamping disc's bottom plate outside center has fixed round handle, and two clamping discs are fixedly connected with the chuck and tailstock of lathe through fixed round handle respectively, the bottom plate and top plate of clamping disc are connected through connecting bolt, and it is convenient for processing and installing clamping column, and clamping column can retractable sliding in the top plate sliding groove of clamping disc, to adapt to the end face of irregular sample, and reliable clamping is carried out, spring is located in the movable sleeve of clamping column, and spring can make clamping column move back and forth and clamping sample by the aid of elastic force, the limiting ring of movable sleeve lower extreme can carry out the location of movable sleeve, prevent clamping column from separating from clamping disc under the action of spring, and rubber cap is equipped on clamping column upper end, can avoid clamping column damaging processing sample in the clamping process, the utility model discloses can pass through the distance between the adjustment lathe chuck and tailstock, and the clamping force of two clamping discs to irregular sample is adjusted.

[0013] The utility model discloses simple structure, convenient to use can conveniently install to the lathe and hold irregular sample, make the processed sample keep radial and axial fixed, avoid loosening, guarantee the precision of processing, not only is applicable to ordinary lathe, but also is applicable to numerical control lathe, make the processing range of lathe get the extension, is worth using widely. DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model discloses;

[0015] Figure 2 It is the plane view of clamping disc;

[0016] Figure 3 It is Figure 2 The side view of;

[0017] Figure 4 It is the partial section view of clamping disc.

[0018] Marked as follows in the drawing: irregular sample 1, disc 2, clamping column 3, spring 4, fixed round handle 5, sliding hole 6, bottom plate 7, side wall 8, top plate 9, connecting bolt 10, spring recess 11, movable sleeve 12, rubber cap 13, limiting ring 14. PREFERRED EMBODIMENT

[0019] The utility model discloses two same structure's clamping disc, and clamping disc is by disc 2, clamping column 3, spring 4, fixed round handle 5 composition.

[0020] Figure 1 Show, and the bottom surface center welding of clamping disc 2 has fixed round handle, and the fixed round handle of two clamping discs is clamped in the center hole of chuck and tailstock of lathe respectively, and the both ends of irregular sample 1 are placed between two clamping discs of chuck and tailstock, and two clamping discs clamp and fix irregular sample 1. Through the distance between the adjustment lathe chuck and tailstock, the clamping force of two clamping discs 2 to irregular sample 1 can be adjusted.

[0021] Figure 1 It is shown that the disc surface of the disc 2 of the clamping disc is uniformly distributed with a plurality of sliding holes 6, the lower part of the plurality of clamping columns 3 is inserted in the sliding hole 6, and the clamping column 3 is in sliding fit with the sliding hole 6. A plurality of springs 4 are respectively installed in the plurality of clamping columns 3, the lower end of the plurality of springs 4 is abutted on the bottom surface of the disc 2, and the top surface of the plurality of clamping columns 3 of the two clamping discs is tightly connected with the two ends of the irregular sample 1 under the elastic force of the spring 4.

[0022] Figure 2 、 3 It is shown that the disc 2 is composed of a bottom plate 7, a side wall 8, a top plate 9 and a connecting bolt 10. The bottom plate 7 and the top plate 9 are the same circular plate, and the side wall 8 is a circular ring. The lower end of the side wall 8 is vertically welded and connected with the circumferential edge of the bottom plate 7, and the top plate 9 is placed on the upper end of the side wall 8. The plate surface of the bottom plate 7 has a plurality of screw holes, and the plate surface of the top plate 9 has a plurality of through holes corresponding to the screw holes of the bottom plate 7. The connecting bolt 10 fixes and connects the top plate 9 and the bottom plate 7 through the through holes of the top plate 9 and the screw holes of the bottom plate 7.

[0023] Figure 2 、 3 It is shown that the plate surface of the top plate 9 of the disc 2 is uniformly distributed with a plurality of sliding holes 6, the lower part of the plurality of clamping columns 3 is respectively inserted in the sliding hole 6, and the clamping column 3 can slide up and down in the sliding hole 6. The plate surface of the bottom plate 7 has a plurality of spring grooves 11, the plurality of spring grooves 11 are respectively opposite to the sliding hole 6 of the top plate 9, the lower end of the plurality of springs 4 is respectively placed in the plurality of spring grooves 11, and the spring groove 11 restrains the lower end of the spring 4 to prevent the spring 4 from tilting.

[0024] Figure 2 、 3 It is shown that the clamping column 3 is composed of a movable sleeve 12 and a rubber cap 13. The movable sleeve 12 is a closed cylinder, the outer diameter of the movable sleeve 12 matches the diameter of the sliding hole 6 of the top plate 9 of the disc 2, the spring 4 is placed in the inner hole of the movable sleeve 12, the lower end of the spring 4 extends out of the lower end of the movable sleeve 12 and is embedded in the spring groove 11 of the bottom plate 7 of the disc 2, and the movable sleeve 12 can slide up under the elastic force of the spring 4 and tightly press the irregular sample 1.

[0025] Figure 4 It is shown that the lower end of the movable sleeve 12 has an outwardly bent limiting ring 14, the limiting ring 14 is perpendicular to the wall of the movable sleeve 12, the outer diameter of the limiting ring 14 is larger than the diameter of the sliding hole 6 of the top plate 9 of the disc 2, and the limiting ring 14 is clamped below the plate surface of the top plate 9 of the disc 2. The limiting ring 14 can limit the movable sleeve 12 to prevent the clamping column 3 from sliding out of the top plate 9 of the disc 2 under the action of the spring 4.

[0026] Figure 2 、 3 ,4 shows that the rubber cap 13 is sleeved on the upper end of the movable sleeve 12, the rubber cap 13 is a cylinder body with a closed upper end, the inner hole diameter of the cylinder body is matched with the outer diameter of the movable sleeve 12, the inner hole of the cylinder body of the rubber cap 13 is sleeved on the upper end of the movable sleeve 12, and the rubber cap 13 is located outside the sliding hole 6 of the top plate 9 of the disc 2. The rubber cap 13 is in close connection with the irregular sample 1 when the clamping column 3 clamps the irregular sample 1, and damage to the irregular sample 1 in the clamping process can be avoided.

[0027] The use process of the utility model is as follows:

[0028] First, the fixed round handle 5 of the two clamping discs is clamped in the center hole of the chuck and tailstock of the lathe respectively, the chuck and tailstock are rotated, and the two clamping discs are fixed;

[0029] Then, the irregular sample 1 is placed between the two clamping discs of the chuck and tailstock, the tailstock of the lathe is pushed to move towards the chuck, the front ends of the multiple clamping columns 3 protruding from the front end of the disc 2 of the two clamping discs are respectively in contact with the two ends of the irregular sample 1, and the irregular sample 1 is clamped by moving the concave-convex degree of the end face of the irregular sample 1 back and forth;

[0030] The tailstock of the lathe is continuously pushed, and the two clamping discs installed on the chuck and tailstock of the lathe clamp the irregular sample 1 under the action of the elastic force of the spring 4;

[0031] After the two clamping discs of the chuck and tailstock firmly clamp the irregular sample 1, the large apron and small apron of the lathe can be moved, and the irregular sample is cut and processed by using a turning tool.

[0032] An embodiment of the utility model is as follows:

[0033] The outer diameter of the bottom plate 7 of the disc 2 is 260mm, the thickness is 5mm, the height of the side wall 8 is 50mm, the thickness is 5mm, the outer diameter of the top plate 9 is 260mm, the thickness is 5mm, and the diameter of the sliding hole 6 is 30mm;

[0034] The outer diameter of the movable sleeve 12 of the clamping column 3 is 30mm, the inner hole diameter is 26mm, the height is 65mm, and the outer diameter of the limiting ring 14 is 40mm;

[0035] The outer diameter of the spring 4 is 25mm, the wire diameter is 2mm, the compression length is 60mm, and the free length is 110mm;

[0036] The diameter of the fixed round handle 5 is 80mm, and the length is 50mm;

[0037] The connecting bolt 10 is a countersunk cylindrical bolt M8x50;

[0038] The outer diameter of the rubber cap 13 is 34 mm, the inner diameter is 30 mm, and the height is 30 mm.

Claims

1. A lathe fixture for holding an irregular test specimen, characterized by: It includes two same structure clamping disc, clamping disc is by disc (2), clamping column (3), spring (4) and fixed round handle (5) are composed, disc (2) disc surface is evenly distributed with multiple sliding hole (6), multiple clamping column (3) lower part is inserted in sliding hole (6), clamping column (3) and sliding hole (6) are sliding fit, spring (4) is installed in clamping column (3), spring (4) lower end is on the bottom surface of disc (2), the bottom surface of clamping disc is welded with fixed round handle (5), the fixed round handle (5) of two clamping discs is clamped in the center hole of chuck and tailstock of lathe respectively, the both ends of irregular sample (1) are placed between the top surface of multiple clamping column (3) of two clamping disc's clamping disc and tailstock respectively, the top surface of multiple clamping column (3) of two clamping disc is connected with the both ends of irregular sample (1) tightly.

2. The lathe fixture for holding an irregular test sample according to claim 1, characterized by: The disc (2) of the clamping disc is composed of a bottom plate (7), a side wall (8), a top plate (9) and a connecting bolt (10). The bottom plate (7) and the top plate (9) are identical circular plates, and the side wall (8) is a circular ring. The lower end of the side wall (8) is vertically welded to the circumferential edge of the bottom plate (7). The top plate (9) is placed on the upper end of the side wall (8). The bottom plate (7) has multiple screw holes on its plate surface. The top plate (9) has multiple through holes on its plate surface, which are opposite to the screw holes of the bottom plate (7). The connecting bolt (10) fixes and connects the top plate (9) and the bottom plate (7) through the through holes of the top plate (9) and the screw holes of the bottom plate (7). Multiple sliding holes (6) are evenly distributed on the plate surface of the top plate (9). The clamping column (3) is installed in the sliding hole (6). The bottom plate (7) has multiple circular spring grooves (11) on its plate surface. Multiple spring grooves (11) are opposite to the sliding holes (6) of the top plate (9). The lower ends of multiple springs (4) are embedded in multiple spring grooves (11) respectively.

3. The lathe fixture for holding an irregular test sample according to claim 2, wherein: The clamping column (3) is composed of a movable sleeve (12) and a rubber cap (13). The movable sleeve (12) is a closed cylinder with its outer diameter matching the diameter of the sliding hole (6) of the top plate (9) of the disc (2). The movable sleeve (12) is in sliding fit with the sliding hole (6). The rubber cap (13) is sleeved on the upper end of the movable sleeve (12). The spring (4) is placed in the inner hole of the movable sleeve (12). The lower end of the spring (4) extends out of the lower end of the movable sleeve (12) and is embedded in the spring groove (11) of the bottom plate (7) of the disc (2).

4. The lathe fixture for holding an irregular test sample according to claim 3, wherein: The lower end of the movable sleeve (12) has an outwardly bent limiting circular ring (14) on its outer periphery. The limiting circular ring (14) is perpendicular to the wall of the movable sleeve (12). The outer diameter of the limiting circular ring (14) is greater than the diameter of the sliding hole (6) of the top plate (9) of the clamping disc. The limiting circular ring (14) is clamped below the plate surface of the top plate (9) of the disc (2).

5. The lathe fixture for holding an irregular test sample according to claim 4, wherein: The rubber cap (13) is a closed cylinder with its inner hole diameter matching the outer diameter of the movable sleeve (12). The rubber cap (13) is sleeved on the upper end of the movable sleeve (12). The upper end of the rubber cap (13) is in tight connection with the end surface of the irregular sample (1).

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