CN220128173U - Workpiece clamping device of deep hole drilling machine - Google Patents

Abstract

The utility model discloses a workpiece clamping device of a deep hole drilling machine, which comprises a screw rod sliding rail mechanism, a workpiece mounting seat fixedly mounted on the screw rod sliding rail mechanism and a power head slidably mounted on the screw rod sliding rail mechanism, wherein a jacking block is mounted on the power head through a cutter handle, the workpiece mounting seat comprises a fixing seat provided with a through hole, a bearing mounted in the through hole and a shaft sleeve sleeved in the bearing, a stepped hole is formed in the shaft sleeve, the aperture of one side of the stepped hole close to the power head is matched with the diameter of a workpiece, and the aperture of the other side of the stepped hole is larger than the aperture to be drilled and smaller than the diameter of the workpiece. The clamping mode of the device is simple, the workpiece is put into the fixed seat and is tightly propped up by the power head, and the workpiece is quickly assembled and disassembled; the workpiece is clamped through the fixing seat, the precision of the workpiece during clamping and rotation can be effectively guaranteed by matching the bearing and the shaft sleeve, and the deep hole machining precision is increased.

Description

Workpiece clamping device of deep hole drilling machine

Technical Field

The utility model relates to the technical field of machining, in particular to a workpiece clamping device of a deep hole drilling machine.

Background

The deep hole drilling machine adopts a special deep hole drill bit, the drill bit performs linear feeding movement, and a workpiece and the drill bit relatively rotate to finish deep hole machining. Different from traditional deep hole processing equipment, the deep hole drilling machine relies on specific drilling technology to drill deep hole system and accurate shallow hole with length-diameter ratio more than 10, has high accuracy, high efficiency and high uniformity's advantage. The deep hole drilling machine can be divided into a horizontal deep hole drilling machine, a vertical deep hole drilling machine and a three-coordinate deep hole drilling machine according to the arrangement condition of the main shaft.

The clamp of the deep hole drilling machine plays a role in clamping a workpiece to be processed, and in order to reduce the hole skewness in deep hole processing, the clamp is usually required to drive the workpiece to rotate. In the process of processing the central hole of the valve core of the automobile steering gear, the existing clamp of the deep hole drilling machine has the following problems: on one hand, a clamp connected to a drilling machine spindle drives a valve core to rotate insufficiently stably, and a runout error is easily generated due to the fact that the gravity center of the valve core or the clamp deviates; on the other hand, the jig of the deep hole drilling machine is generally a three-jaw chuck, and the position needs to be adjusted when a new machining process starts, so that the clamping efficiency is low.

Disclosure of Invention

The utility model aims to provide a workpiece clamping device of a deep hole drilling machine, which can rapidly clamp a workpiece, ensure the clamping precision of the workpiece and drive the workpiece to rotate stably.

The utility model is realized by the following technical scheme:

the utility model provides a deep hole drilling machine's work piece clamping device, includes lead screw slide rail mechanism, fixed mounting work piece mount pad and the unit head of slidable mounting on lead screw slide rail mechanism, installs the kicking block through the handle of a knife on the unit head, the work piece mount pad is including the fixing base that is equipped with the through-hole, installs the bearing in the through-hole and the axle sleeve of cover in the bearing of establishing, establishes the shoulder hole in the axle sleeve, and the aperture that the shoulder hole is close to unit head one side agrees with the work piece diameter, and shoulder hole opposite side aperture is greater than needs drilling aperture and is less than the work piece diameter.

Further: the bearing comprises deep groove ball bearings which are respectively distributed at two ends of the shaft sleeve.

Further: the outer wall of the shaft sleeve is provided with a first step end face which faces to one side far away from the power head, and a plane thrust bearing is arranged between the first step face and the fixed seat.

Further: and a bearing fixing end cover is arranged on one side of the deep groove ball bearing, which faces the outside of the fixing seat.

Further: the shaft sleeve comprises an outer shaft sleeve and an inner shaft sleeve which are separated, the outer shaft sleeve is fixedly arranged in the fixed seat, and the inner shaft sleeve is matched with the outer shaft sleeve hole shaft.

Further: the inner shaft sleeve is respectively provided with a tail section and a head section which are separated, the head section is close to one side of the power head, and the outer side of the head section is provided with a flange ring and is fixed with the outer shaft sleeve through the flange ring; the outer wall of the tail section is provided with a second step surface, the second step surface faces to one side far away from the power head, and a spring is arranged between the second step surface and the outer sleeve.

Further: the separation surface between the head section and the tail section is a staggered concave-convex surface.

Further: the top block is provided with a cylindrical hole facing the workpiece mounting seat, and the diameter of the cylindrical hole is matched with the diameter of the workpiece.

Compared with the prior art, the utility model has the following advantages:

the clamping mode of the device is simple, the workpiece is put into the fixed seat and is tightly propped up by the power head, and the workpiece is quickly assembled and disassembled;

the workpiece is clamped through the fixing seat, the precision of the workpiece during clamping and rotation can be effectively guaranteed by matching the bearing and the shaft sleeve, and the deep hole machining precision is increased.

Drawings

FIG. 1 is a schematic illustration of an application of the present utility model;

FIG. 2 is a schematic view in partial cross-section of the present utility model;

fig. 3 is a schematic structural view of the tail section and the head section of the present utility model.

In the figure:

a screw rod slide rail mechanism; 2. a workpiece mounting seat; 2.1, fixing base; 2.21, outer sleeve; 2.221, tail section; 2.222, head section; 2.3, deep groove ball bearings; 2.4, a bearing fixing end cover; 2.5, a planar thrust bearing; 2.6, a spring; 3. a power head; 4. a knife handle; 5. a top block; 6. a drill; 7. and (5) a valve core workpiece.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model is realized by the following technical scheme:

the utility model provides a deep hole drilling machine's work piece clamping device, including lead screw slide rail mechanism 1, fixed mounting is on lead screw slide rail mechanism 1 work piece mount pad 2 and slidable mounting is on lead screw slide rail mechanism 1 unit head 3, install kicking block 5 through handle of a knife 4 on the unit head 3, work piece mount pad 2 is including fixing base 2.1 that is equipped with the through-hole, install the bearing in the through-hole and the cover establish the axle sleeve in the bearing, establish the shoulder hole in the axle sleeve, the aperture that the shoulder hole is close to unit head 3 one side agrees with case work piece 7 diameter, shoulder hole opposite side aperture is greater than needs drilling aperture and is less than case work piece 7 diameter. The bearing comprises deep groove ball bearings 2.3 which are respectively distributed at two ends of the shaft sleeve. The outer wall of the shaft sleeve is provided with a first step end face which faces to the side far away from the power head 3, and a plane thrust bearing 2.6 is arranged between the first step face and the fixed seat 2.1. The side of the deep groove ball bearing 2.3, which faces the outside of the fixed seat 2.1, is provided with a bearing fixed end cover 2.4. The shaft sleeve comprises an outer shaft sleeve 2.21 and an inner shaft sleeve which are separated, the outer shaft sleeve 2.21 is fixedly arranged in the fixed seat 2.1, and the inner shaft sleeve is in shaft fit with the hole of the outer shaft sleeve 2.21. The tail section 2.221 and the head section 2.222 of the inner sleeve are respectively separated, the head section 2.222 is close to one side of the power head 3, a flange ring is arranged on the outer side of the head section 2.222, and the inner sleeve is fixed with the outer sleeve 2.21 through the flange ring; the outer wall of the tail section 2.221 is provided with a second step surface, the second step surface faces to one side far away from the power head 3, and a spring 2.6 is arranged between the second step surface and the outer sleeve 2.21. The separation between the head section 2.222 and the tail section 2.221 is a staggered concave-convex surface. The top block 5 is provided with a cylindrical hole facing the workpiece mounting seat 2, and the diameter of the cylindrical hole is matched with the diameter of the valve core workpiece 7.

The working principle of the utility model is as follows:

the utility model is first mounted on the bench of a drilling machine opposite to the drill bit 6 of the drilling machine. When the device is used for clamping the valve core workpiece 7, one end of the valve core workpiece 7 is only required to be plugged into the inner shaft sleeve from one side of the fixed seat 2.1, which is close to the power head 3, and then the power head 3 is controlled to move towards the fixed seat 2.21 through the lead screw sliding rail mechanism 1 until the cylindrical hole of the top block 5 is sleeved into the other end of the valve core workpiece 7 and the valve core workpiece 7 is tightly propped in the inner shaft sleeve, so that the clamping of the valve core workpiece 7 is completed. In the process, the pressure of the valve core workpiece 7 borne by the inner sleeve tail section 2.221 is conducted to the outer sleeve 2.21 through the spring 2.6 and then to the plane thrust bearing 2.5. The spring 2.6 plays a buffering role, so that overload of a servo motor of the screw rod slide rail 1 can be prevented, and the plane thrust bearing 2.5 constrains the position of the outer shaft sleeve 2.21 and ensures smooth rotation of the outer shaft sleeve. The concave-convex separation surface between the tail section 2.221 and the head section 2.222 prevents misalignment therebetween.

When drilling operation is carried out, the valve core workpiece 7 is driven to rotate in the fixed seat 2.1 by the power head 3: the top block 5 drives the valve core workpiece 7 to rotate through friction, the valve core workpiece 7 drives the inner shaft sleeve to rotate through friction, and the head section 2.222 of the inner shaft sleeve drives the outer shaft sleeve 2.21 through the flange ring belt to stably rotate under the restraint of the deep groove ball bearings 2.3 on two sides and the plane thrust bearing 2.5. Then the drilling tool 6 is driven to feed to the fixed seat 2.1, and the drilling tool 6 penetrates through the inner hole of the tail section 2.221 of the inner sleeve to drill the deep hole on the valve core workpiece 7.

After the machining is finished, the power head 3 retreats, the original valve core workpiece 7 is taken down, and the steps are replaced by new valve core workpiece 7. When a valve core workpiece 7 with another diameter is required to be processed, only the inner shaft sleeve and the top block 5 need to be replaced.

The foregoing embodiments are merely illustrative of the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, not to limit the scope of the present utility model. All equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (8)

1. The utility model provides a deep hole drilling machine's work piece clamping device which characterized in that: including lead screw slide rail mechanism (1), fixed mounting work piece mount pad (2) and slidable mounting unit head (3) on lead screw slide rail mechanism (1) on unit head (3) are installed kicking block (5) through handle of a knife (4), work piece mount pad (2) are including fixing base (2.1) that are equipped with the through-hole, install bearing and the cover of cover in the bearing in the through-hole, establish the shoulder hole in the axle sleeve, the aperture that the shoulder hole is close to unit head (3) one side agrees with case work piece diameter, and shoulder hole opposite side aperture is greater than and needs drilling aperture and is less than case work piece diameter.

2. The workpiece clamping device of a deep hole drilling machine of claim 1, wherein: the bearing comprises deep groove ball bearings (2.3) which are respectively distributed at two ends of the shaft sleeve.

3. A workpiece clamping device for a deep hole drilling machine according to claim 1 or 2, characterized in that: the outer wall of the shaft sleeve is provided with a first step end face which faces to one side far away from the power head, and a plane thrust bearing (2.5) is arranged between the first step face and the fixed seat (2.1).

4. The workpiece clamping device of a deep hole drilling machine of claim 2, wherein: and a bearing fixing end cover (2.4) is arranged on one side of the deep groove ball bearing (2.3) facing the outside of the fixing seat.

5. The workpiece clamping device of a deep hole drilling machine of claim 1, wherein: the shaft sleeve comprises an outer shaft sleeve (2.21) and an inner shaft sleeve which are separated, the outer shaft sleeve (2.21) is fixedly arranged in the fixed seat (2.1), and the inner shaft sleeve is matched with the hole shaft of the outer shaft sleeve (2.21).

6. The workpiece clamping device of a deep hole drilling machine of claim 5, wherein: the inner sleeve is respectively separated into a tail section (2.221) and a head section (2.222), the head section (2.222) is positioned at one side close to the power head (3), a flange ring is arranged at the outer side of the head section (2.222), and the inner sleeve is fixed with the outer sleeve (2.21) through the flange ring; the outer wall of the tail section (2.221) is provided with a second step surface, the second step surface faces to one side far away from the power head (3), and a spring (2.6) is arranged between the second step surface and the outer shaft sleeve (2.21).

7. The workpiece clamping device of a deep hole drilling machine of claim 6, wherein: the separation surface between the head section (2.222) and the tail section (2.221) is a staggered concave-convex surface.

8. The workpiece clamping device of a deep hole drilling machine of claim 1, wherein: the top block (5) is provided with a cylindrical hole facing the workpiece mounting seat (2), and the diameter of the cylindrical hole is matched with the diameter of the valve core workpiece.