Height-adjustable workpiece supporting mechanism with rollers

Abstract

The height-adjustable workpiece supporting mechanism with the idler wheels comprises a supporting plate, a trapezoid lead screw, a rotating handle and a fixed V-shaped block, and the trapezoid lead screw is installed in the middle of the supporting plate through a lead screw nut; the lead screw nut is installed in the supporting plate through a bearing, the head is exposed, and a nut protruding end is formed. Rotary handles are uniformly distributed on the side surface of the protruding end of the nut; the fixed V-shaped block is arranged at the top end of the trapezoidal screw rod, the V-shaped surfaces on the two sides of the fixed V-shaped block are respectively connected with the fixed shafts, and the outer rings of the fixed shafts are provided with rollers; a guide pin is inserted into a guide key groove in the lead screw nut through a guide pin mounting seat, so that the trapezoidal lead screw only moves along the direction of the guide key groove; rotary motion of the trapezoidal screw rod is converted into linear motion, up-down movement of the V-shaped supporting block of the workpiece is achieved, sliding friction is converted into rolling friction, a user can conveniently adjust the height manually according to the outer diameter of the workpiece, operation is easy, implementation is convenient, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining equipment, in particular to a workpiece support mechanism with adjustable height and rollers. Background Art

[0002] In the field of existing deep hole drilling machine processing equipment, the workpiece support is usually a fixed V-shaped support structure. Each time the processed product is changed, fixed V-shaped supports of different sizes need to be replaced. The labor intensity of the operator is high, the operation error is large, the safety risk is high, the workpiece cannot move back and forth on the V-shaped support surface of the V-shaped workpiece support, and defects such as damage to the surface of the workpiece and the V-shaped support surface of the V-shaped workpiece support are likely to occur. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problem of manual height adjustment of the workpiece support, and to propose a support mechanism that facilitates the movement of the workpiece.

[0004] To achieve the above purpose, the utility model proposes a workpiece support mechanism with adjustable height and rollers, which includes a support plate, a trapezoidal screw rod, a rotary handle, a fixed V-shaped block and a guide pin:

[0005] The trapezoidal screw rod is installed in the middle of the support plate through a screw nut.

[0006] The screw nut is installed in the support plate through a bearing and exposes its head to form a nut protruding end.

[0007] The rotary handle is installed on the side of the nut protruding end and is evenly distributed around the nut protruding end.

[0008] The fixed V-shaped block is fixed at the top of the trapezoidal screw rod. Fixed shafts are respectively connected to the two V-shaped surfaces of the fixed V-shaped block, and rollers are arranged on the outer circle of the fixed shafts.

[0009] A guide key groove is provided on the side of the tail end of the trapezoidal screw rod passing through the support plate. A guide pin mounting seat is provided at the connection between the bottom end of the support plate and the trapezoidal screw rod. The guide pin passes through the guide pin mounting seat and is inserted into the guide key groove, so that the trapezoidal screw rod can only move along the direction of the guide key groove.

[0010] Further, a bearing mounting hole is provided in the middle of the support plate, and the screw nut is arranged in the bearing mounting hole of the support plate.

[0011] Further, the screw nut includes a head, a near head, a middle part and a tail part. The head and the near head protrude from the top end of the support plate. The near head is located below the head, and the middle part and the tail part are arranged in the bearing mounting hole.

[0012] The screw diameter near the head is larger than that of the middle part, and the screw diameter of the middle part is larger than that of the tail part.

[0013] Further, a deep groove ball bearing and a thrust ball bearing are provided between the lead screw nut and the support plate, and both the deep groove ball bearing and the thrust ball bearing are arranged in the bearing mounting hole; the top end of the thrust ball bearing is in contact with the bottom end of the near head of the lead screw nut, and the inner ring of the thrust ball bearing is in contact with the middle part of the lead screw nut, so that the thrust ball bearing is installed between the near head and the middle part of the lead screw nut;

[0014] The deep groove ball bearing includes a first deep groove ball bearing and a second deep groove ball bearing, and the inner rings of the first deep groove ball bearing and the second deep groove ball bearing are both in contact with the outer wall of the lead screw nut; the first deep groove ball bearing is installed between the middle part and the tail part of the lead screw nut, the second deep groove ball bearing is arranged near the bottom end of the tail part of the lead screw nut, and an inner spacer is provided between the first deep groove ball bearing and the second deep groove ball bearing, and the inner spacer is in contact with the outer wall of the lead screw nut.

[0015] Further, an end cover is also provided at the connection between the top end of the support plate and the lead screw nut.

[0016] Further, the fixed V-shaped block is fixed to the top end of the trapezoidal lead screw through a transition mounting plate.

[0017] Further, a gap is left between the inner ring of the roller and the outer ring of the fixed shaft to facilitate the rolling of the roller; a limit retaining ring is provided at the end of the fixed shaft.

[0018] Further, uniformly distributed threaded holes are provided on the side surface of the nut protruding end of the lead screw nut, and the rotary handle is installed on the side surface of the nut protruding end through threaded connection.

[0019] Further, threaded holes are provided on the two V-shaped surfaces of the fixed V-shaped block, and a fixed shaft is installed through threaded connection.

[0020] Further, the guide pin is installed on the side surface of the guide pin mounting seat through uniformly distributed screws.

[0021] The working mechanism of the present utility model is:

[0022] By turning the rotary handle, the lead screw nut is driven to rotate. During the rotation of the lead screw nut, the trapezoidal lead screw is driven to move up and down. When the trapezoidal lead screw moves up and down, due to the action of the guide pin, the trapezoidal lead screw can only move up and down along the keyway and does not rotate. Therefore, when the trapezoidal lead screw moves up and down, it will drive the fixed V-block to move up and down synchronously, so that the rollers on the fixed V-block also move up and down synchronously, thus realizing the up and down movement of the rollers with a V-shaped distribution for workpiece support, which is convenient for users to manually adjust the height according to the outer diameter of the workpiece during use.

[0023] In addition, the workpiece support mechanism of the present utility model is provided with rollers on the fixed V-block, so that when the placed workpiece needs to move along the tangent direction of the rollers, it can be conveniently moved under the action of the rollers, thus realizing a workpiece support with manually adjustable height and self - contained rollers, which well solves the deficiencies of the existing workpiece support.

[0024] Compared with the prior art, the advantages of the present utility model are as follows:

[0025] 1. The present utility model utilizes the structural settings of the bearing, lead screw nut and guide pin to convert the rotational motion of the trapezoidal lead screw into a linear motion, realizing the up and down movement of the V-shaped support block for the workpiece. It also adjusts the height of the support mechanism through the rotary handle, which is convenient for users to manually adjust the height according to the outer diameter of the workpiece during use. The operation is simple, the implementation is convenient, and it is safe and reliable.

[0026] 2. The present utility model sets rollers on the V-shaped surface of the workpiece support, converting the sliding friction between the workpiece and the V-shaped surface into rolling friction motion, reducing friction and wear, and solving the problems of the existing workpiece support, such as the workpiece cannot move back and forth on the V-shaped support surface of the V-shaped workpiece support and it is easy to cause damage to the surface of the workpiece and the V-shaped support surface of the V-shaped workpiece support. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall planar structure schematic diagram of the workpiece support mechanism of the embodiment of the present utility model;

[0028] Figure 2 is the front view of the workpiece support mechanism of the embodiment of the present utility model;

[0029] Figure 3 is the top view of the workpiece support mechanism of the embodiment of the present utility model;

[0030] Figure 4 is Figure 2 the side sectional view of the workpiece support mechanism at the B - B part in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be further described below.

[0032] This embodiment provides a workpiece support mechanism with adjustable height and rollers, as Figures 1-4 shown. The mechanism includes a support plate 1, a trapezoidal lead screw 6, a rotating handle 9, and a fixed V-block 13. Among them, a bearing mounting hole is provided in the middle of the support plate 1. A first step is provided at the top opening of the bearing mounting hole, and a second step is provided at the bottom opening; the lead screw nut 5 of the trapezoidal lead screw 6 is screwed into the bearing mounting hole and passes through the support plate 1 and is installed in the middle of the fixed plate 1; as Figure 1 and Figure 2 shown, the lead screw nut 5 is installed in the bearing mounting hole of the support plate 1 through a bearing and exposes its head, and the exposed head forms a nut protruding end; threaded holes are evenly opened around the side wall of the nut protruding end, and the rotating handle 9 is installed through the evenly distributed threaded holes, so that the rotating handle 9 installed on the side of the nut protruding end is evenly distributed around the nut protruding end; at the same time, as Figure 1 shown, the fixed V-block 13 is fixed to the top end of the trapezoidal lead screw 6 through a transition mounting plate 12. Threaded holes are opened on the two V-shaped surfaces of the fixed V-block 13, and a fixed shaft 14 is installed by means of threaded connection. A limit retaining ring 16 is provided at the end of the fixed shaft 14.

[0033] A roller 15 is provided on the outer ring of the fixed shaft 14, and a gap is left between the inner ring of the roller 15 and the outer ring of the fixed shaft 14 to facilitate the rolling of the roller 15; through this roller 15, the sliding friction between the workpiece and the V-shaped surface is transformed into rolling friction movement, effectively reducing friction and wear; in addition, as Figure 4 shown, a guiding keyway with a certain length is provided on the side of the tail end of the trapezoidal lead screw 6 passing through the support plate 1. A guiding pin mounting seat 10 is provided by means of a screw at the connection between the bottom end of the support plate 1 and the trapezoidal lead screw 6. Guiding pins 11 are installed on the side of the guiding pin mounting seat 11 through evenly distributed screws. The guiding pins 11 are passed through the guiding pin mounting seat 10 and inserted into the guiding keyway of the trapezoidal lead screw 6, so that the trapezoidal lead screw 6 only moves along the direction of the guiding keyway.

[0034] In this embodiment, the lead screw nut 5 includes a head, a near-head, a middle part, and a tail part. Among them, the head and the near-head protrude from the top end of the support plate 1; the head is the above-mentioned nut protruding end; the near-head is located below the head, and the middle part and the tail part are provided in the bearing mounting hole; as Figure 4 shown, the diameter of the near-head of the lead screw nut 5 is larger than the diameter of the middle part, and the diameter of the middle part is larger than the diameter of the tail part.

[0035] In this embodiment, a deep groove ball bearing 4 and a thrust ball bearing are provided between the lead screw nut 5 and the support plate 1, and both the deep groove ball bearing 4 and the thrust ball bearing are arranged in the bearing mounting holes. Among them, the thrust ball bearing 4 is arranged on the upper end surface of the first step, its top is in contact with the bottom end of the near head of the lead screw nut 5, and its inner ring is in contact with the middle part of the lead screw nut 5, so that the thrust ball bearing 4 is installed between the near head and the middle part of the lead screw nut 5. The deep groove ball bearing includes a first deep groove ball bearing 21 and a second deep groove ball bearing 22. Among them, the inner rings of the first deep groove ball bearing 21 and the second deep groove ball bearing 22 are both in contact with the outer wall of the lead screw nut 5. As Figure 4 shown, the second deep groove ball bearing 22 is arranged on the upper end surface of the second step and is in contact with the position near the bottom end of the tail of the lead screw nut 5. The first deep groove ball bearing 21 is installed between the middle part and the tail of the lead screw nut 5. At the same time, as Figure 4 shown, the first deep groove ball bearing 21 and the second deep groove ball bearing 22 are arranged in parallel with the same center, and an inner spacer 3 is also provided between them. The inner spacer 3 is in contact with the outer wall of the lead screw nut.

[0036] In this embodiment, as Figure 3 shown, a end cover 7 is also provided at the connection between the top end of the support plate 1 and the lead screw nut 5. The end cover 7 is locked to the support plate 1 by uniformly distributed screws 8.

[0037] The specific operation mechanism of the height-adjustable roller workpiece support mechanism in this embodiment is as follows:

[0038] Turn the rotary handle 9 to drive the lead screw nut 5 to rotate. During the rotation of the lead screw nut 5, the trapezoidal lead screw 6 is driven to move up and down. When the trapezoidal lead screw 6 moves up and down, due to the action of the guide pin 11, the trapezoidal lead screw 6 can only move up and down along the keyway and does not rotate. Therefore, when the trapezoidal lead screw 6 moves up and down, it will drive the fixed V-shaped block 13 to move up and down synchronously, so that the rollers 15 on the fixed V-shaped block 13 also move up and down synchronously, thereby realizing the up and down movement of the V-shaped distributed rollers for workpiece support, which is convenient for users to manually adjust the height according to the outer diameter of the workpiece during use.

[0039] The above is only the preferred embodiment of the present invention and does not impose any limitation on the present invention. Any person skilled in the art, within the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification and other changes to the technical solution and technical content disclosed by the present invention, which are all within the content of the technical solution of the present invention and still belong to the protection scope of the present invention.

Claims

1. A height-adjustable workpiece support mechanism with rollers, characterized in that: Includes support plate, trapezoidal lead screw, rotating handle, fixed V-block and guide pin: The trapezoidal lead screw is installed in the middle of the support plate through a lead screw nut; The screw nut is installed in the support plate through a bearing and the head is exposed to form a nut protruding end; The rotating handle is installed on the side of the protruding end of the nut and is evenly distributed around the protruding end of the nut; The fixed V-shaped block is fixed to the top of the trapezoidal screw rod, and the V-shaped surfaces on both sides of the fixed V-shaped block are respectively connected to fixed shafts, and the outer ring of the fixed shaft is provided with a roller; A guide keyway is provided on the side of the tail end of the trapezoidal lead screw passing through the support plate; a guide pin mounting seat is provided at the connection between the bottom end of the support plate and the trapezoidal lead screw, and the guide pin is inserted into the guide keyway through the guide pin mounting seat, so that the trapezoidal lead screw can only move along the direction of the guide keyway.

2. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: A bearing mounting hole is provided in the middle of the support plate, and the screw nut is arranged in the bearing mounting hole of the support plate.

3. The height-adjustable workpiece support mechanism with rollers according to claim 2, characterized in that: The screw nut includes a head portion, a proximal head portion, a middle portion and a tail portion, wherein the head portion and the proximal head portion protrude from the top end of the support plate; the proximal head portion is located below the head portion, and the middle portion and the tail portion are disposed in the bearing mounting hole; the thread diameter of the proximal head portion is greater than that of the middle portion, and the thread diameter of the middle portion is greater than that of the tail portion.

4. The height-adjustable workpiece support mechanism with rollers according to claim 3, characterized in that: A deep groove ball bearing and a thrust ball bearing are provided between the screw nut and the support plate, and the deep groove ball bearing and the thrust ball bearing are both provided in the bearing mounting hole, the top end of the thrust ball bearing fits with the bottom end of the proximal head of the screw nut, and the thrust ball bearing is installed between the proximal head and the middle part of the screw nut; the deep groove ball bearing includes a first deep groove ball bearing and a second deep groove ball bearing, the first deep groove ball bearing is installed between the middle part and the tail part of the screw nut, and the second deep groove ball bearing is provided at the tail part of the screw nut near the bottom end, and an inner spacer is provided between the first deep groove ball bearing and the second deep groove ball bearing.

5. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: An end cover is also provided at the connection between the top end of the support plate and the screw nut.

6. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: The fixed V-shaped block is fixed to the top end of the trapezoidal lead screw through a transition mounting plate.

7. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: A gap is left between the inner ring of the roller and the outer ring of the fixed shaft to facilitate the rolling of the roller; a limit stop ring is provided at the end of the fixed shaft.

8. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: The rotating handle is connected by threads and installed on the side of the protruding end of the nut.

9. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: Fixed shafts are installed on the V-shaped surfaces on both sides of the fixed V-shaped block by means of threaded connection.

10. The height-adjustable workpiece support mechanism with rollers according to claim 1, characterized in that: The guide pins are mounted on the side surfaces of the guide pin mounting seats by means of evenly distributed screws.

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