Lathe tailstock mechanism with power chuck

Abstract

The utility model discloses a lathe tailstock mechanism with a power chuck, and relates to the technical field of lathe tailstocks. The device comprises a tailstock, wherein a bearing is rotationally mounted in the tailstock; by arranging the oil cylinder and the pull rod, the wedge center sleeve drives one end of the shifting fork clamped in the first clamping groove to move towards the chuck, and the other end of the shifting fork clamped in the corresponding second clamping groove drives the base claw and the clamping claw on the base claw to move towards the outside of the chuck, so that the clamping claw is opened, and then a large-diameter cylinder is placed on the chuck; through cooperation of the oil cylinder and the pull rod, the wedge center sleeve and one end of the shifting fork clamped in the first clamping groove move in the opposite direction of the chuck, the other end of the shifting fork clamped in the corresponding second clamping groove drives the base claw and the clamping claw to move in the direction of the large-diameter cylinder, the clamping claw is attached to the large-diameter cylinder, and therefore the large-diameter cylinder is clamped and fixed. The problem that the center tailstock cannot machine the large-diameter cylinder is solved, and the machining quality of the large-diameter cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tailstocks, in particular to a lathe tailstock mechanism with a power chuck. Background Art

[0002] The tailstock of a lathe supports and fixes the workpiece. As the main supporting part of the lathe fixture, the tailstock can prevent the workpiece from bending and deforming due to its own weight or cutting force, especially when processing long and thin straight rod parts, to ensure processing accuracy. However, traditional tailstocks are top tailstocks, and the top tailstocks cannot achieve the function of clamping the follower. When it is necessary to process a large-diameter cylinder on a lathe, the top tailstock cannot clamp the large-diameter cylinder well, which affects the processing of the large-diameter cylinder and reduces the quality of the processed large-diameter cylinder. Utility Model Content

[0003] In order to solve the problem that traditional tailstocks are all top tailstocks, when a large diameter cylinder needs to be processed on a lathe, the top tailstock cannot clamp the large diameter cylinder well, which affects the processing of the large diameter cylinder and reduces the quality of the processed large diameter cylinder; the purpose of the utility model is to provide a tailstock mechanism of a lathe with a power chuck.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a tailstock mechanism of a lathe with a power chuck, comprising a tailstock, a bearing rotatably installed inside the tailstock, a pull rod fixedly installed on one side of the bearing, a chuck provided on one side of the pull rod, a flange fixedly installed on the side of the chuck close to the pull rod, a wedge core sleeve connected to the pull rod is provided inside the chuck, three first grooves evenly distributed in an annular manner are provided on the outer wall of the wedge core sleeve, three first slide grooves evenly distributed in an annular manner corresponding to the first grooves are provided on the top of the chuck, a base claw is slidably clamped inside each of the first slide grooves, a second groove is provided at the bottom end of the base claw, a shift fork is clamped between each of the first grooves and the corresponding second groove, the shift fork has an oil filling hole facing upward, a latch is rotatably penetrated inside the shift fork, the latch penetrates the chuck, a clamping claw is fixedly installed on the top of each base claw by a bolt, and an oil cylinder is provided on the side of the pull rod away from the chuck.

[0005] The outside of the pull rod is fixedly connected with a threaded connection edge, and the inside of the wedge core sleeve on one side close to the pull rod is provided with a threaded connection groove used in conjunction with the threaded connection edge.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] The invention clamps and fixes the large diameter cylinder, solves the problem that the center tailstock cannot process the large diameter cylinder, and improves the quality of the processing of the large diameter cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Figure 2 It is a schematic diagram of the internal structure of the tailstock in the utility model.

[0011] Figure 3 It is a schematic diagram of the internal structure of the chuck in the utility model.

[0012] Figure 4 It is a schematic diagram of the connection structure between the shift fork and the wedge core sleeve in the utility model.

[0013] Figure 5 It is a schematic diagram of the connection structure between the chuck and the first sliding groove in the utility model.

[0014] Figure 6 It is a schematic diagram of the connection structure between the wedge core sleeve and the wedge block in the utility model.

[0015] Figure 7 This is the appearance diagram of the tailstock in the utility model.

[0016] In the figure: 1. tailstock; 2. pull rod; 20. flange; 21. chuck; 22. wedge core sleeve; 23. first slot; 24. first slide; 25. base claw; 26. second slot; 27. shift fork; 28. latch; 29. ​​claw; 3. threaded connection edge; 31. threaded connection groove; 4. clamping column; 41. second slide; 5. wedge block; 6. empty slot; 7. bearing; 8. cylinder; 9. baffle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example: Figure 1-7As shown, the utility model provides a tailstock mechanism of a lathe with a power chuck, including a tailstock 1, a bearing 7 is rotatably installed inside the tailstock 1, a pull rod 2 is fixedly installed on one side of the bearing 7, a chuck 21 is provided on one side of the pull rod 2, a flange 20 is fixedly installed on the side of the chuck 21 close to the pull rod 2, a wedge core sleeve 22 connected to the pull rod 2 is provided inside the chuck 21, three first grooves 23 evenly distributed in an annular shape are provided on the outer wall of the wedge core sleeve 22, a wedge block 5 is fixedly installed on the outside of the wedge core sleeve 22 at the position of each first groove 23, the movement of the shift fork 27 is facilitated by the provision of the wedge block 5, and three first slide grooves corresponding to the first grooves 23 evenly distributed in an annular shape are provided on the top of the chuck 21 24, a base claw 25 is slidably clamped inside each first slide groove 24, and a second clamping groove 26 is opened at the bottom end of the base claw 25, a shift fork 27 is clamped between each first clamping groove 23 and the corresponding second clamping groove 26, and the shift fork 27 has an oil filling hole facing upward, and a latch 28 is rotatably penetrated inside the shift fork 27, and the latch 28 penetrates the chuck 21, and a clamping claw 29 is fixedly installed on the top of each base claw 25 by bolts, and a cylinder 8 is fixedly installed on the side of the tailstock 1 away from the chuck 21, and the driving end of the cylinder 8 is rotatably installed on the bearing 7, and the chuck 21 is opened at the position of each first slide groove 24. An empty slot 6 is opened, and the shift fork 27 is located in the empty slot 6. By setting the empty slot 6, it is convenient to install the shift fork 27.

[0019] The outside of the pull rod 2 is fixedly connected with a threaded connection edge 3, and the inside of the wedge core sleeve 22 close to the pull rod 2 is provided with a threaded connection groove 31 used in conjunction with the threaded connection edge 3. By providing the threaded connection edge 3 and the threaded connection groove 31, it is convenient to fix the pull rod 2 on the wedge core sleeve 22, and it is convenient to disassemble and replace the wedge core sleeve 22 at a later time.

[0020] A clamping column 4 is fixedly installed on the outside of the wedge core sleeve 22, and a second slide groove 41 is opened on the inner wall of the chuck 21 for use with the clamping column 4. By setting the clamping column 4 and the second slide groove 41, it is convenient to quickly install the wedge core sleeve 22 into the chuck 21 so that the first clamping groove 23 and the first slide groove 24 correspond.

[0021] A bearing 7 is fixedly installed outside the pull rod 2 in the tailstock 1 , and a baffle 9 is fixedly installed on one side of the chuck 21 close to the claw 29 , so as to prevent dust from entering the inside of the chuck 21 and affecting the use of the chuck 21 .

[0022] Working principle: In actual use, the oil cylinder 8 controls the oil inlet and oil return through the electromagnetic valve. When the oil cylinder 8 is started, the bearing 7 and the pull rod 2 are driven to expand and contract toward the chuck 21, and the wedge core sleeve 22 is driven to expand and contract toward the chuck 21. As the wedge core sleeve 22 expands and contracts, one end of the fork 27 stuck in the first slot 23 is driven to move toward the chuck 21. At the same time, the other end of the fork 27 stuck in the corresponding second slot 26 drives the base claw 25 to move in the corresponding first slide groove 24 toward the outside of the chuck 21 and the claw 29 on the base claw 25 moves toward the outside of the chuck 21, so that The claw 29 opens, and then the large diameter cylinder is placed on the chuck 21. Then, the bearing 7 and the pull rod 2 are driven by the oil cylinder 8 to move in the opposite direction of the chuck 21. At the same time, the pull rod 2 drives the wedge core sleeve 22 and one end of the fork 27 stuck in the first groove 23 to move in the opposite direction of the chuck 21. At the same time, the other end of the fork 27 stuck in the corresponding second groove 26 drives the base claw 25 in the corresponding first slide groove 24 and the claw 29 on the base claw 25 to move in the direction of the large diameter cylinder, so that the claw 29 and the large diameter cylinder fit together, thereby clamping and fixing the large diameter cylinder.

[0023] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A tailstock mechanism of a lathe with a power chuck, comprising a tailstock (1), characterized in that: A bearing (7) is rotatably mounted inside the tailstock (1), a pull rod (2) is fixedly mounted on one side of the bearing (7), a chuck (21) is provided on one side of the pull rod (2), a flange (20) is fixedly mounted on the side of the chuck (21) close to the pull rod (2), a wedge sleeve (22) connected to the pull rod (2) is provided inside the chuck (21), three first grooves (23) evenly distributed in an annular pattern are formed on the outer wall of the wedge sleeve (22), three first slide grooves (24) corresponding to the first grooves (23) are evenly distributed in an annular pattern are formed on the top of the chuck (21), and the inner surface of each first slide groove (24) is provided with a flange (20) connected to the pull rod (2). A base claw (25) is slidably clamped on each part, a second clamping groove (26) is opened at the bottom end of the base claw (25), a shift fork (27) is clamped between each first clamping groove (23) and the corresponding second clamping groove (26), the shift fork (27) has an oil filling hole facing upward, a latch (28) is rotatably penetrated inside the shift fork (27), and the latch (28) penetrates the chuck (21), a clamping claw (29) is fixedly installed on the top end of each base claw (25) by means of bolts, and an oil cylinder (8) is fixedly installed on the side of the tailstock (1) away from the chuck (21), and the driving end of the oil cylinder (8) is rotatably mounted on the bearing (7).

2. A tailstock mechanism of a lathe with a power chuck as claimed in claim 1, characterized in that: The outside of the pull rod (2) is fixedly connected with a threaded connection edge (3), and the inside of the wedge core sleeve (22) on the side close to the pull rod (2) is provided with a threaded connection groove (31) for use with the threaded connection edge (3).

3. The tailstock mechanism of a lathe with a power chuck as claimed in claim 1, characterized in that: A clamping column (4) is fixedly mounted on the outside of the wedge core sleeve (22), and a second sliding groove (41) for use in conjunction with the clamping column (4) is provided on the inner wall of the chuck (21).

4. The tailstock mechanism of a lathe with a power chuck as claimed in claim 1, characterized in that: A wedge block (5) is fixedly mounted on the outside of the wedge core sleeve (22) at the position of each first clamping groove (23).

5. The tailstock mechanism of a lathe with a power chuck as claimed in claim 1, characterized in that: The chuck (21) is provided with an empty slot (6) at the position of each first sliding slot (24), and the shift fork (27) is located in the empty slot (6).

6. The tailstock mechanism of a lathe with a power chuck as claimed in claim 1, characterized in that: A baffle (9) is fixedly mounted on one side of the chuck (21) close to the claw (29).

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