Cam machining mechanism of die machining lathe

Abstract

The utility model relates to the field of die machining lathes, and discloses a cam machining mechanism of a die machining lathe, which comprises a cam shaft and a first cam, the first cam is fixedly sleeved on the left side of the outside of the cam shaft, the outer wall of the first cam is movably connected with a first driven part, and the rear end of the first driven part is movably connected with a half gear. The rear end of the half gear is connected with a toothed plate in a meshed mode, the bottom end of the toothed plate is slidably connected with a fixing plate fixed in the rack, a first spring is fixedly connected between the right wall of the toothed plate and the inner wall of the fixing plate, and the right wall of the toothed plate is fixedly connected with a push rod extending out of the fixing plate. According to the cam machining mechanism of the die machining lathe, the upper chain wheel base is arranged, the cam shaft is installed on the lathe through the bearing, and a linkage structure is additionally arranged at the first cam, so that continuous and efficient matched machining is achieved, the arrangement of a set of cams is reduced, the machining efficiency is improved, and the problem that the number of the cams is too large is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to die processing lathe technical field, concretely is a kind of cam processing mechanism of die processing lathe. BACKGROUND

[0002] Die cam plays an important role in die manufacturing and industrial production, its precise motion control, good reliability and adaptability, etc. Advantage, make it become one of the key components of many high-precision, high-efficiency die. Cam is installed on shaft, the both ends of shaft are supported on the frame of die through bearing etc. Part, ensure that cam can rotate smoothly, shaft and cam are usually fixed between key connection or interference fit etc. Mode, prevent relative rotation, when cam rotates around shaft, its profile pushes driven piece movement, because the shape of cam profile is different, the movement law of driven piece is also different, for example, it can realize constant velocity motion, variable speed motion, intermittent motion etc., but because cam counterweight is not one, and gravity center repeatedly changes with movement, lead to shaft fatigue condition, therefore, a driving shaft can drive the number of cam, each group of tool bar needs a group of cam to drive, and the matching continuity of tool bar is limited. Therefore, a cam processing mechanism of die processing lathe is needed to solve the above technical defects. SUMMARY

[0003] The utility model discloses a cam processing mechanism of die processing lathe to solve the problem that each group of tool bar needs a group of cam to drive in the background art, and the matching continuity of tool bar is limited.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of cam processing mechanism of die processing lathe, including cam shaft and first cam, the first cam is fixedly sleeved with first cam on the left side of the outer portion of cam shaft, first driven piece is movably connected on the outer wall of first cam, half gear is movably connected to the rear end of first driven piece, gear plate is meshedly connected to the rear end of half gear, the fixed plate fixed in frame is slidably connected to the bottom end of gear plate, first spring is fixedly connected between the right wall of gear plate and the inner wall of fixed plate, the push rod extending to the outside of fixed plate is fixedly connected to the right wall of gear plate, tool holder fixed in frame is arranged on the right side of push rod, two groups of back spring are installed in tool holder, first tool bar and fifth tool bar are fixedly connected respectively on the right side of back spring, lower sprocket is fixedly sleeved with in the middle position of the outer portion of cam shaft, upper sprocket is fixedly assembled on the left side wall of tool holder, and middle sprocket is arranged below upper sprocket.

[0005] As a further technical scheme of the utility model, the upper sprocket and the middle sprocket, the middle sprocket and the lower sprocket are connected by chain respectively.

[0006] As a further technical scheme of the utility model, the camshaft outside middle position fixed sleeve has a second cam, the second cam outside movable connection has a second follower, the second follower rear end movable connection has a third cutter bar.

[0007] As a further technical scheme of the utility model, the camshaft outside right side position fixed sleeve has a large gear, the large gear rear end meshing connection has a small gear, the small gear left side fixed connection has a rotating block, the rotating block left side abuts has a top block, the top block rear movable connection has a third follower, the third follower rear movable connection has a fourth cutter bar.

[0008] As a further technical scheme of the utility model, the rotating block left side wall processes two groups of symmetrical convex balls, the top block right side wall processes the recess hole corresponding with the convex ball.

[0009] As a further technical scheme of the utility model, the camshaft both sides are installed with bearing respectively, the camshaft is installed at the rack through bearing, each cutter bar is installed with cutter head connector at the camshaft.

[0010] Compared with the prior art, the utility model has the advantages that the cam machining mechanism of the mould machining lathe not only realizes the setting of reducing a group of cams, improves the machining efficiency, realizes the long-term stable work, and the reliability is higher, and realizes the more compact mould overall structure, reduces the error caused by the influencing factor;

[0011] (1) through setting up chain wheel, cutter holder, camshaft is installed on the lathe through bearing, increases a set of linkage structure at the first cam, through the rotation of camshaft, makes the lower sprocket drive upper sprocket rotation, so that the cutter holder rotates, the first cutter bar and the fifth cutter bar alternate exchange up and down position, makes the push rod can repeatedly push the first cutter bar or the fifth cutter bar, pushes out different cutter bar, the first cutter bar can install turning tool bit, the fifth cutter bar can install product hook inner chamfer tool bit, to realize continuous efficient cooperation processing, reduce a group of cam settings, improve the machining efficiency;

[0012] (2) by being provided with camshaft, first cam, first follower, half gear, toothed plate, fixed plate, first spring, push rod, upper sprocket, tool holder, pull spring, first tool bar, fifth tool bar, tool bit connector, third tool bar, fourth tool bar, second follower, second cam, lower sprocket, third follower, top block, gear wheel, rotating block, pinion, bearing, middle sprocket, convex ball, the first cam and the second cam are processed with different profiles, with the rotation of the first cam, the first follower pushes the toothed plate to move right through the half gear, and then the toothed plate is reset through the first spring, so that the first tool bar or the fifth tool bar is continuously pushed out through the push rod, realizing the turning of the outer diameter; similarly, when the second cam rotates, the second follower pushes the third tool bar to move right, realizing the chamfering of the product; when the gear wheel rotates, the pinion drives the rotating block to rotate, the convex ball of the top block and the rotating block is continuously engaged and dislocated, the fourth tool bar is driven by the third follower to move back and forth quickly, realizing the punching; each follower moves according to the predetermined trajectory under the drive of the cam, thereby realizing the outer diameter machining of the mold, which can work stably for a long time and has high reliability.

[0013] (3) by being provided with the tool bit connector, the structure can realize complex motion conversion in a small space, so that the overall structure of the mold is more compact, and the working process of the mold can be accurately controlled through reasonable design of the cam profile, and is not affected by factors such as oil leakage and air pressure fluctuation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a top view structure schematic diagram of the utility model;

[0015] Figure 2 It is a tool holder side view structure schematic diagram of the utility model;

[0016] Figure 3 It is a first cam top view structure schematic diagram of the utility model;

[0017] Figure 4 It is a rotating block side view structure schematic diagram of the utility model.

[0018] In the drawing: 1, camshaft; 2, first cam; 3, first follower; 4, half gear; 5, toothed plate; 6, fixed plate; 7, first spring; 8, push rod; 9, upper sprocket; 10, tool holder; 11, pull spring; 12, first tool bar; 13, fifth tool bar; 14, tool bit connector; 15, third tool bar; 16, fourth tool bar; 17, second follower; 18, second cam; 19, lower sprocket; 20, third follower; 21, top block; 22, gear wheel; 23, rotating block; 24, pinion; 25, bearing; 26, middle sprocket; 27, convex ball. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] Please refer to Figures 1-4 The present application provides an embodiment of a cam machining mechanism of a mold machining lathe, which comprises a cam shaft 1 and a first cam 2. The first cam 2 is fixedly sleeved on the left side of the outer part of the cam shaft 1. A first follower 3 is movably connected to the outer wall of the first cam 2. A half gear 4 is movably connected to the rear end of the first follower 3. A toothed plate 5 is meshingly connected to the rear end of the half gear 4. A fixed plate 6 fixed in a rack is slidably connected to the bottom end of the toothed plate 5. A first spring 7 is fixedly connected between the right wall of the toothed plate 5 and the inner wall of the fixed plate 6. A push rod 8 extending to the outside of the fixed plate 6 is fixedly connected to the right wall of the toothed plate 5. A tool holder 10 fixed in the rack is arranged on the right side of the push rod 8. Two groups of return springs 11 are installed in the tool holder 10. A first tool bar 12 and a fifth tool bar 13 are respectively fixedly connected to the right side of the return springs 11. A lower sprocket 19 is fixedly sleeved on the middle position of the outer part of the cam shaft 1. An upper sprocket 9 is fixedly assembled to the left side wall of the tool holder 10. A middle sprocket 26 is arranged below the upper sprocket 9. The upper sprocket 9 and the middle sprocket 26 and the middle sprocket 26 and the lower sprocket 19 are respectively connected through chains.

[0021] Specifically, as shown in Figure 1 , Figure 2 and Figure 3 , the cam shaft 1 is installed on the lathe through a bearing 25. A set of linkage structures is added at the first cam 2. Through the rotation of the cam shaft 1, the lower sprocket 19 drives the upper sprocket 9 to rotate, so that the tool holder 10 rotates. The first tool bar 12 and the fifth tool bar 13 alternately change the upper and lower positions, so that the push rod 8 can repeatedly push the first tool bar 12 or the fifth tool bar 13 to the right. Different tool bars are pushed out. A turning tool head can be installed at the first tool bar 12, and a product hook inner chamfer tool head can be installed at the fifth tool bar 13, so as to realize continuous and efficient cooperative machining.

[0022] The cam shaft 1 is externally sleeved with a second cam 18 in the middle position, the second cam 18 is externally movably connected with a second follower 17, the rear end of the second follower 17 is movably connected with a third cutter bar 15, the cam shaft 1 is externally sleeved with a large gear 22 on the right side, the rear end of the large gear 22 is meshingly connected with a small gear 24, the left side of the small gear 24 is fixedly connected with a rotating block 23, the rotating block 23 is abutted on the left side by a top block 21, the rear end of the top block 21 is movably connected with a third follower 20, the rear end of the third follower 20 is movably connected with a fourth cutter bar 16, two groups of symmetrical convex balls 27 are processed on the left side wall of the rotating block 23, and concave holes corresponding to the convex balls 27 are processed on the right side wall of the top block 21;

[0023] Specifically, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the first cam 2 and the second cam 18 are processed with different profiles, with the rotation of the first cam 2, the first follower 3 pushes the toothed plate 5 to move right through the half gear 4, and then the toothed plate 5 is reset by the first spring 7, so that the first cutter bar 12 or the fifth cutter bar 13 is continuously pushed out through the push rod 8, realizing turning the outer diameter; similarly, when the second cam 18 rotates, the second follower 17 pushes the third cutter bar 15 to move right, realizing product chamfering; when the large gear 22 rotates, the small gear 24 drives the rotating block 23 to rotate, the convex balls 27 of the rotating block 23 and the top block 21 are continuously meshed and dislocated, the fourth cutter bar 16 is driven by the third follower 20 to move back and forth quickly, realizing punching.

[0024] Bearing 25 is installed on both sides of the cam shaft 1, the cam shaft 1 is installed on the rack through the bearing 25, and the cutter bar is installed with a cutter connector 14 at the cam shaft 1;

[0025] Specifically, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the structure can realize complex motion conversion in a small space, so that the overall structure of the mold is more compact, and through reasonable design of the cam profile, the working process of the mold can be accurately controlled and is not affected by factors such as oil leakage and air pressure fluctuation.

[0026] Working principle: the first cam 2 and the second cam 18 are machined with different profiles, with the rotation of the first cam 2, the first follower 3 pushes the toothed plate 5 right through the half gear 4, and then the toothed plate 5 is reset through the first spring 7, through the rotation of the cam shaft 1, the lower sprocket 19 drives the upper sprocket 9 to rotate, so that the tool holder 10 rotates, the first tool bar 12 and the fifth tool bar 13 alternately change the upper and lower positions, so that the push rod 8 can repeatedly push the first tool bar 12 or the fifth tool bar 13 to the right, and different tool bars are pushed out, so that the first tool bar 12 or the fifth tool bar 13 is continuously pushed out by the push rod 8, realizing turning outer diameter; similarly, when the second cam 18 rotates, the second follower 17 pushes the third tool bar 15 right, realizing product chamfering; when the gear 22 rotates, the pinion 24 drives the rotating block 23 to rotate, the top block 21 and the convex ball 27 of the rotating block 23 are continuously engaged and dislocated, the fourth tool bar 16 is driven by the third follower 20 to move back and forth quickly, realizing punching.

[0027] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A cam machining mechanism for a mold machining lathe, comprising a camshaft (1) and a first cam (2), characterized in that: A first cam (2) is fixedly sleeved on the outer left side of the camshaft (1). A first follower (3) is movably connected to the outer wall of the first cam (2). A half gear (4) is movably connected to the rear end of the first follower (3). A gear plate (5) is meshed with the rear end of the half gear (4). A fixed plate (6) fixed in the frame is slidably connected to the bottom end of the gear plate (5). A first spring (7) is fixedly connected between the right wall of the gear plate (5) and the inner wall of the fixed plate (6). An extension is fixedly connected to the right wall of the gear plate (5). A push rod (8) is attached to the outside of the fixed plate (6). A tool holder (10) is fixed inside the frame on the right side of the push rod (8). Two sets of return springs (11) are installed inside the tool holder (10). The first tool bar (12) and the fifth tool bar (13) are fixedly connected to the right side of the return springs (11). A lower sprocket (19) is fixedly sleeved at the middle position outside the camshaft (1). An upper sprocket (9) is fixedly mounted on the left side wall of the tool holder (10). A middle sprocket (26) is provided below the upper sprocket (9).

2. The cam machining mechanism of a mold machining lathe according to claim 1, characterized in that: The upper sprocket (9) and the middle sprocket (26), and the middle sprocket (26) and the lower sprocket (19) are connected by chains.

3. The cam machining mechanism of a mold machining lathe according to claim 1, characterized in that: The second cam (18) is fixedly sleeved at the middle position outside the camshaft (1), and the second follower (17) is movably connected to the outside of the second cam (18). The third tool holder (15) is movably connected to the rear end of the second follower (17).

4. The cam machining mechanism of a mold machining lathe according to claim 1, characterized in that: A large gear (22) is fixedly sleeved on the right side of the camshaft (1). A small gear (24) is meshed with the rear end of the large gear (22). A rotating block (23) is fixedly connected to the left side of the small gear (24). A top block (21) abuts against the left side of the rotating block (23). A third follower (20) is movably connected to the rear of the top block (21). A fourth tool holder (16) is movably connected to the rear of the third follower (20).

5. The cam machining mechanism of a mold machining lathe according to claim 4, characterized in that: The left side wall of the rotating block (23) is machined with two sets of symmetrical convex spheres (27), and the right side wall of the top block (21) is machined with concave holes corresponding to the convex spheres (27).

6. The cam machining mechanism of a mold machining lathe according to claim 1, characterized in that: The camshaft (1) is equipped with bearings (25) on both sides. The camshaft (1) is mounted on the frame through the bearings (25). Each tool bar at the camshaft (1) is equipped with a tool head connector (14).

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