CN215699868U - A hold-down mechanism for part rough machining and parts machining frock thereof - Google Patents

Abstract

The utility model discloses a pressing mechanism for rough machining of parts and a part machining tool thereof, wherein the part machining tool comprises a base and a clamp unit, the clamp unit comprises a double-head screw rod and a clamp block, the top end of the clamp block is provided with the pressing mechanism, the pressing mechanism comprises a rack and a pressing assembly, the pressing assembly comprises a vertical sliding block vertically and slidably arranged on the rack, a pressing plate in transverse sliding fit with the vertical sliding block, an internal thread sliding block in transverse sliding fit with the pressing plate and in vertical stop fit with the pressing plate, and a vertical screw rod in threaded connection with a threaded hole of the internal thread sliding block and in rotary connection with the rack at the end. The utility model not only can apply pressure through the rotation of the screw rod to act on the pressure plate, thereby compressing the part from the upper part, so as to increase the stability of the part fixed on the workbench and facilitate the subsequent processing to be carried out smoothly; simultaneously, this hold-down mechanism can also carry out horizontal regulation, adjusts the clamp plate horizontal position to thereby it can slide in the horizontal direction and adjust its position, dodges and interferes.

Description

A hold-down mechanism for part rough machining and parts machining frock thereof

Technical Field

The utility model relates to the field of aviation part machining, in particular to a pressing mechanism for rough machining of parts and a part machining tool thereof.

Background

In machining, for aviation parts, most of the supplied materials are square materials and are irregular. For processing, programming blanks are generally regular square materials, so that when regular materials and irregular materials are roughly processed, due to different structures and thicknesses of workpieces, clamping methods for processing are quite non-uniform, and some clamping methods adopt viscose glue, some clamping methods adopt vices and the like. The time spent by the clamping modes, the requirements on operators during clamping and the loss of materials are high.

Prior art CN113000887A discloses a drilling machine for special-shaped workpiece, it includes a plurality of anchor clamps units based on double-end lead screw, and the anchor clamps unit includes two-way lead screw and the clamp splice of screw thread cup joint at two-way lead screw both ends respectively. Through rotating each double-end lead screw to the clamp splice that makes to be located same double-end lead screw is close to each other, then carries out the center location clamping to the material that is located the middle part. The clamping mode can only fix the periphery of the bottom of the workpiece, the fixing parts of the clamping mode are limited, and for the workpieces with certain specific structures, the stability of bottom fixing is poor, and the fixing parts need to be increased to improve the stability of workpiece fixing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the pressing mechanism for rough machining of the parts and the part machining tool thereof are provided, and the technical problems that the conventional tool can only fix the periphery of the bottom of a workpiece, the fixing part of the conventional tool is limited, and the stability of only bottom fixing of certain workpieces with specific structures is poor are solved. The utility model designs a pressing mechanism which is used for dismounting and mounting a clamp block or a clamping block for clamping a workpiece, and the pressing mechanism is used for pressing the upper side of the workpiece so as to increase the stability of fixing the workpiece on a workbench and facilitate the smooth subsequent processing.

The technical scheme adopted by the utility model is as follows:

the pressing mechanism for rough machining of the parts comprises a rack and a pressing assembly, wherein the pressing assembly comprises a vertical sliding block, a pressing plate, an internal thread sliding block and a vertical screw rod, the vertical sliding block is vertically slidably mounted on the rack, the pressing plate is in transverse sliding fit with the vertical sliding block, the internal thread sliding block is in transverse sliding fit with the pressing plate and is in vertical stop fit with the pressing plate, the vertical screw rod is in threaded connection with a threaded hole of the internal thread sliding block, and the end of the vertical screw rod is rotatably connected with the rack.

Further, the internal thread slider is through interior horizontal sliding structure and clamp plate horizontal sliding fit, interior horizontal sliding structure is including setting up vertical bar hole on the clamp plate, setting up the interior horizontal spout on the long limit pore wall in vertical bar hole and by the lateral wall evagination of internal thread slider become with interior horizontal spout sliding fit's interior sliding end, the internal thread slider is arranged in vertical bar hole, and its lateral wall that is provided with interior sliding end is laminated with the long limit pore wall in vertical bar hole.

Furthermore, the vertical sliding block is in vertical sliding fit with the rack through a vertical sliding structure, the vertical sliding structure comprises a vertical sliding rail fixed on the rack and a vertical sliding groove arranged on one side of the vertical sliding block and in sliding fit with the vertical sliding rail, and the other side of the vertical sliding block is in transverse sliding fit with the pressing plate.

Furthermore, the vertical sliding block is in transverse sliding fit with the pressing plate through an outer transverse sliding structure, and the outer transverse sliding structure comprises an outer transverse sliding groove formed in the side wall of the pressing plate and a transverse sliding rail which is in sliding fit with the outer transverse sliding groove and is connected with the vertical sliding block into a whole.

Furthermore, the pressing end of the pressing plate is provided with an inclined plane, the top end of the inclined plane is close to the screw rod, the bottom end of the inclined plane is far away from the screw rod, and the bottom end of the pressing end extends downwards in an inclined mode.

Furthermore, the frame is of a frame structure, the pressing assembly is located in an inner cavity of the frame, and the pressing end of the pressing plate is located outside the frame.

Further, a driving handle is installed at the top end of the screw rod.

Further, an auxiliary frame is arranged on the outer side of the machine frame, the machine frame is longitudinally slidably mounted on the auxiliary frame 20, and the material pressing end of the pressing plate can extend out of the auxiliary frame through transverse sliding.

A part machining tool for rough machining of parts comprises a base and two clamp units based on a double-end lead screw, wherein the two clamp units are arranged at the upper end of the base and comprise the double-end lead screw rotatably arranged on the base and a clamp block in threaded connection with the double-end lead screw and in sliding fit with the base, a pressing mechanism is mounted at the top end of the clamp block and comprises a rack and a pressing assembly, the pressing assembly comprises a vertical sliding block vertically and slidably mounted on the rack, a pressing plate in transverse sliding fit with the vertical sliding block, an internal thread sliding block in transverse sliding fit with the pressing plate and in vertical stop fit with the pressing plate, and a vertical screw rod in threaded connection with a threaded hole of the internal thread sliding block and in rotary connection with the rack at the end; the rack of the pressing mechanism is transversely installed at the top end of the clamp block in a sliding mode through a sliding structure, and the rack is matched with the vertical stop at the top end of the clamp block in a blocking mode.

A part machining tool for rough machining of parts comprises a base and two clamp units based on a double-end lead screw, wherein the two clamp units are arranged at the upper end of the base and comprise the double-end lead screw rotatably arranged on the base and a clamp block in threaded connection with the double-end lead screw and in sliding fit with the base, a pressing mechanism is mounted at the top end of the clamp block and comprises a rack and a pressing assembly, the pressing assembly comprises a vertical sliding block vertically and slidably mounted on the rack, a pressing plate in transverse sliding fit with the vertical sliding block, an internal thread sliding block in transverse sliding fit with the pressing plate and in vertical stop fit with the pressing plate, and a vertical screw rod in threaded connection with a threaded hole of the internal thread sliding block and in rotary connection with the rack at the end; an auxiliary frame is arranged on the outer side of the rack, the rack is longitudinally slidably mounted on the auxiliary frame, and the material pressing end of the pressing plate can extend out of the auxiliary frame through transverse sliding; the auxiliary frame of the pressing mechanism is transversely installed at the top end of the clamp block in a sliding mode through a sliding structure, and the rack is matched with the vertical stop at the top end of the clamp block.

Due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the pressing mechanism for rough machining of the part and the part machining tool thereof, pressure can be applied through rotation of the screw to act on the pressing plate, so that the part is pressed from above, the stability of the part fixed on the workbench is improved, and subsequent machining is facilitated to be carried out smoothly; meanwhile, the pressing mechanism can also be transversely adjusted to adjust the transverse position of the pressing plate so that the pressing plate can transversely slide to adjust the position of the pressing plate and avoid interference;

2. according to the pressing mechanism for rough machining of the part and the part machining tool thereof, the pressing mechanism is combined with the traditional part clamping tool to form a new tool, so that the original centering clamping can be kept, the pressure can be applied to the upper side of a workpiece to press and fix the workpiece downwards, the stability of fixing the part by the part machining tool is improved, and subsequent related operations can be performed smoothly;

3. according to the pressing mechanism for rough machining of the part and the part machining tool thereof, the auxiliary frame is detachably mounted at the top of the clamp block or the clamping block, and a plurality of pressing plates and other related mechanisms can be mounted in the auxiliary frame as required, so that the pressing and fixing requirements of different heights on the same side of the workpiece are met, the fixing stability of the workpiece is improved, and subsequent smooth machining is facilitated.

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings needed to be used in the embodiment will be briefly described below, and it should be understood that the proportional relationship of each component in the drawings in this specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:

FIG. 1 is a schematic view of the pressing mechanism of the present invention;

FIG. 2 is a schematic bottom view of the hold-down mechanism of the present invention;

FIG. 3 is a side view of the hold-down mechanism of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of the hold-down mechanism of the present invention;

FIG. 5 is a schematic view of a transverse cross-sectional configuration of the hold-down mechanism of the present invention;

FIG. 6 is a schematic view of the position of the hold-down mechanism of the present invention mounted on a long slide;

FIG. 7 is a schematic structural diagram of a first tooling for machining parts;

FIG. 8 is a schematic view of the pressing mechanism with the sub-frame;

FIG. 9 is a schematic view of the construction of the sub-frame;

fig. 10 is a schematic structural view of a second part machining tool.

Reference numerals in the drawings indicate:

1-frame, 2-vertical slide block, 3-press plate, 4-internal thread slide block, 5-screw rod, 6-vertical strip-shaped hole, 7-internal transverse slide groove, 8-internal slide end, 9-vertical slide rail, 10-vertical slide groove, 11-external transverse slide groove, 12-transverse slide rail, 13-inclined plane, 14-driving handle, 15-base, 16-double-head screw rod, 17-clamp block, 18-installation slide groove, 19-long slide rail, 20-auxiliary frame, 21-transverse slide groove, 22-upper V-shaped block, 23-lower V-shaped block, 24-longitudinal slide rail and 25-large groove body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

The present invention will be described in detail with reference to fig. 1 to 7.

Example 1

As shown in fig. 1 to 6, the pressing mechanism for rough machining of parts of the present invention comprises a frame 1 and a pressing assembly, wherein the pressing assembly comprises a vertical slider 2 vertically slidably mounted on the frame 1, a pressing plate 3 transversely slidably engaged with the vertical slider 2, an internal thread slider 4 transversely slidably engaged with the pressing plate 3 and vertically stop-engaged therewith, and a vertical screw 5 threadedly connected with a threaded hole of the internal thread slider 4 and having an end rotatably connected with the frame 1.

Further, internal thread slider 4 is through interior horizontal sliding structure and the horizontal sliding fit of clamp plate 3, interior horizontal sliding structure is including setting up vertical bar hole 6 on clamp plate 3, setting up interior horizontal spout 7 on the long limit pore wall in vertical bar hole 6 and by the lateral wall evagination of internal thread slider 4 become with interior horizontal spout 7 sliding fit's interior sliding end 8, internal thread slider 4 is arranged in vertical bar hole 6, its lateral wall that is provided with interior sliding end and the long limit pore wall laminating in vertical bar hole 6.

Further, the vertical sliding block 2 is in vertical sliding fit with the rack 1 through a vertical sliding structure, the vertical sliding structure comprises a vertical sliding rail 9 fixed on the rack 1 and a vertical sliding groove 10 arranged on one side of the vertical sliding block 2 and in sliding fit with the vertical sliding rail 9, and the other side of the vertical sliding block 2 is in horizontal sliding fit with the pressing plate 3.

Further, the vertical sliding block 2 is in transverse sliding fit with the pressing plate 3 through an outer transverse sliding structure, and the outer transverse sliding structure comprises an outer transverse sliding groove 11 formed in the side wall of the pressing plate 3 and a transverse sliding rail 12 which is in sliding fit with the outer transverse sliding groove 11 and is connected with the vertical sliding block 2 into a whole.

The pressing mechanism designed by the utility model takes a frame 1 as a main body. During the use, frame 1 and the pincers piece 2 that is used for the centre gripping part use the slide rail spout cooperation, are convenient for with this hold-down mechanism quick detach, fast-assembling to anchor clamps on. The rack 1 is connected with the vertical slide rail 9 by using bolts, and the vertical slide rail 9 is fixed on the rack 1 by using bolts, so that the installation and maintenance of the utility model are convenient. The transverse slide rail 12 is matched with the vertical slide rail 9 through the vertical slide block 2, the vertical slide block 2 slides up and down on the vertical slide rail 9, the press plate 3 slides transversely along the transverse slide rail 12 integrated with the vertical slide block, and the up-down sliding adjustment and the transverse sliding adjustment are performed through the structure, so that the press plate can slide up and down and transversely in the rack 5, the height and the transverse position of the press plate can be conveniently adjusted, the press plate is pressed on the preset position of a workpiece, the actual pressing position of the pressing mechanism designed by the utility model can be adjusted, various parts can be matched conveniently, and the stability of part fixing operation is improved. Meanwhile, the internal thread sliding block is matched with the sliding groove pressing plate 8 through the sliding groove, the pressing plate transversely moves, the internal thread sliding block cannot be driven to move, the screw rod rotates to drive the internal thread sliding block to move up and down, the internal thread sliding block is matched with the vertical stop of the pressing plate, the drive from the screw rod is transmitted to the pressing plate, and therefore the pressing plate is pressed onto the pressing plate through the screw rod and the internal thread sliding block, and then the pressing plate can be pressed on parts. The internal thread sliding block and the screw rod are matched through threads to provide upward or downward loosening and pressing force, the screw rod can be fixed on the rack through clearance fit, and the screw rod can also be rotatably installed on the rack through a bearing.

In conclusion, the pressing mechanism designed by the utility model not only can apply pressure through the rotation of the screw rod to act on the pressing plate, so that the part is pressed from the upper part, the stability of fixing the part on the workbench is improved, and the subsequent processing is facilitated to be carried out smoothly; simultaneously, this hold-down mechanism can also carry out horizontal regulation, adjusts the clamp plate horizontal position to thereby it can slide in the horizontal direction and adjust its position, dodges and interferes.

In the utility model, the sliding groove and sliding rail matching structures at a plurality of positions can guide the movement of the part to prevent the part from being blocked, and simultaneously can improve the stability of the whole structure to avoid shaking.

Example 2

In the present embodiment, the contact between the platen 3 and the workpiece is further described in the description of embodiment 1.

As shown in fig. 1 and 3, in the present invention, the pressing end of the pressing plate 3 is provided with an inclined surface 13, the top end of the inclined surface is close to the screw, the bottom end of the inclined surface is far away from the screw, and the bottom end of the pressing end extends obliquely downward.

The inclined plane is arranged so that the volume of the pressing end can be reduced on the basis of keeping the pressing property of the pressing plate, and the pressing end can be conveniently inserted into structures such as a groove body of a workpiece with a different structure. The bottom end of the pressing end extends downwards in an inclined mode, the pressing end can be enabled to contact with a workpiece before the bottom of the pressing plate, and the stability of the pressing mechanism for pressing the workpiece is improved.

Example 3

The structure of the rack is shown in fig. 1, the rack 1 is a frame structure, the pressing assembly is located in an inner cavity of the frame, and the pressing end of the pressing plate 3 is located outside the frame.

Further, a driving handle 14 is mounted on the top end of the screw 5.

In order to facilitate the use of the pressing mechanism, mounting sliding grooves 18 can be formed in both sides of the top end and both sides of the bottom end of the pressing mechanism, the mounting sliding grooves 18 are matched with long sliding rails 19, so that when the pressing mechanism needs to be used, the pressing mechanism slides along the long sliding rails until the pressing mechanism slides to the periphery of a workpiece, then the transverse position of the pressing plate is adjusted, and the screw rod is rotated to press the pressing mechanism downwards onto the workpiece, as shown in fig. 6.

Example 4

In this embodiment, the sliding of the pressing mechanism is explained based on the above embodiments.

When partial workpieces are clamped, a plurality of pressing plates are required to be adopted for pressing, the pressing positions of the pressing plates are different in height, a plurality of pressing plates are required to be adopted, and meanwhile, a structure which is convenient to install and disassemble is required to be adopted for facilitating subsequent processing. Based on this, the utility model is provided with an auxiliary frame 20 outside the frame 1, the frame 1 is longitudinally slidably mounted on the auxiliary frame 20, and the pressing end of the pressing plate 3 can extend out of the auxiliary frame 20 through transverse sliding, as shown in fig. 8.

During the use, with auxiliary frame 20 dismantlement installation at tong block or clamp splice top, and relevant mechanisms such as a plurality of clamp plates can be installed according to required to auxiliary frame is inside to satisfy the fixed demand of pushing down with the same one side not co-altitude of work piece, promote the fixed stability of work piece, be convenient for follow-up smooth processing.

The longitudinal sliding of the frame 1 preferably takes the following solution: a plurality of longitudinal guide rails are mounted on the auxiliary frame 20, and a plurality of longitudinal sliding grooves are arranged on the rack 1, and each longitudinal sliding groove is matched with one longitudinal guide rail, preferably, the longitudinal guide rails are i-shaped guide rails.

Example 5

As shown in fig. 7, a part machining tool for rough machining of a part comprises a base 15 and two clamp units based on a double-headed lead screw, wherein the two clamp units are arranged at the upper end of the base 15, each clamp unit comprises a double-headed lead screw 16 rotatably arranged on the base 15 and a clamp block 17 in threaded connection with the double-headed lead screw 16 and in sliding fit with the base 15, a pressing mechanism is mounted at the top end of the clamp block 17 and comprises a rack 1 and a pressing assembly, the pressing assembly comprises a vertical slide block 2 vertically slidably mounted on the rack 1, a pressing plate 3 in transverse sliding fit with the vertical slide block 2, an internal thread slide block 4 in transverse sliding fit with the pressing plate 3 and in vertical stop fit with the vertical slide block, and a vertical screw 5 in threaded connection with a threaded hole of the internal thread slide block 4 and in rotary connection with the rack 1 at the end; the frame 1 of the pressing mechanism is transversely installed at the top end of the clamp block 17 in a sliding mode through a sliding structure, and the frame 1 is matched with the vertical stop at the top end of the clamp block 17.

When clamping a workpiece, the workpiece is placed on the upper surface of the base 15, and then each clamp unit is started: rotating the double-end screw rod to enable the clamp blocks 17 at the two ends of the double-end screw rod to be close to each other and clamp the workpiece; then sliding the press plate 3 to make the end part of the press plate located at the position needing to be pressed down on the workpiece; and then the screw is rotated to drive the pressing plate to press down until the pressing plate presses the workpiece tightly.

In this embodiment, combine hold-down mechanism and traditional part centre gripping frock, form new frock, can not only keep original centering centre gripping like this, and can also exert pressure at the work piece upside, push down fixedly, promoted parts machining frock fixed part's stability, the follow-up relevant operation of being convenient for goes on smoothly.

The stop matching in the utility model means that the sliding block/sliding rail can only move along the extending direction of the sliding groove but can not move along other directions, and specifically, the size of the opening of the sliding groove is smaller than that of the groove bottom, and the shape and the size of the cross section of the sliding block/sliding rail are consistent with those of the cross section of the sliding groove in sliding matching with the sliding block/sliding rail.

Example 6

As shown in fig. 10, a part machining tool for rough machining of a part includes a base 15 and two clamp units based on a double-headed lead screw, which are arranged at the upper end of the base 15, wherein each clamp unit includes a double-headed lead screw 16 rotatably arranged on the base 15, and a clamp block 17 in threaded connection with the double-headed lead screw 16 and in sliding fit with the base 15, a pressing mechanism is installed at the top end of the clamp block 17, and includes a frame 1 and a pressing assembly, the pressing assembly includes a vertical slider 2 vertically slidably installed on the frame 1, a pressing plate 3 in transverse sliding fit with the vertical slider 2, an internal thread slider 4 in transverse sliding fit with the pressing plate 3 and in vertical stop fit, and a vertical screw 5 in threaded connection with a threaded hole of the internal thread slider 4 and in rotational connection with the frame 1 at an end portion;

an auxiliary frame 20 is arranged on the outer side of the machine frame 1, the machine frame 1 is longitudinally slidably mounted on the auxiliary frame 20, and the material pressing end of the pressing plate 3 can extend out of the auxiliary frame 20 through transverse sliding;

the auxiliary frame 20 of the pressing mechanism is transversely installed at the top end of the clamp block 17 in a sliding mode through a sliding structure, and the rack 1 is matched with the vertical stop at the top end of the clamp block 17.

In example 5 and example 6, the pressing mechanism is transversely and slidably mounted on the clamp block by adopting the following scheme: two V-shaped transverse sliding grooves 21 are formed in the two sides of each clamp block, one transverse sliding groove is located on the top face of each clamp block, the other transverse sliding groove is located inside each clamp block and communicated with the side wall of each clamp block through a strip opening, and the two transverse sliding grooves located on the same side are vertically symmetrical.

The structure matched with the transverse sliding groove on the frame 1 adopts the following scheme: the bottom of the rack 1 is provided with a large groove body 25 matched with the top of the clamp block, the upper end and the lower end of the groove wall at the two sides of the large groove body are respectively provided with an upper V-shaped block 22 and a lower V-shaped block 23, the upper V-shaped block 22 is matched with a transverse sliding groove positioned on the top surface of the clamp block, the lower V-shaped block 23 is matched with a transverse sliding groove positioned in the clamp block, so that the rack 1 is transversely and slidably mounted on the clamp block and cannot move up and down based on the matching of the transverse sliding groove and the V-shaped block, and the vertical stop matching is realized.

The auxiliary frame is provided with a groove body which is consistent with the clamp block matching structure communicated with the rack 1, the bottom of the auxiliary frame is provided with a large groove body matched with the top of the clamp block, the upper end and the lower end of the groove wall of the two sides of the large groove body are respectively provided with an upper V-shaped block 22 and a lower V-shaped block 23, the upper V-shaped block 22 is matched with a transverse sliding groove positioned on the top surface of the clamp block, the lower V-shaped block 23 is matched with a transverse sliding groove positioned inside the clamp block, so that the rack 1 is transversely and slidably installed on the clamp block, and cannot move up and down based on the matching of the transverse sliding groove and the V-shaped block, and the vertical stop matching is realized.

In the utility model, the transverse direction refers to the direction consistent with the moving direction of the clamp blocks; longitudinal means a direction lying in a horizontal plane and perpendicular to the transverse direction, and vertical means a direction perpendicular to the horizontal plane.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The pressing mechanism for rough machining of the parts is characterized by comprising a rack (1) and a pressing assembly, wherein the pressing assembly comprises a vertical sliding block (2) vertically slidably mounted on the rack (1), a pressing plate (3) transversely slidably matched with the vertical sliding block (2), an internal thread sliding block (4) transversely slidably matched with the pressing plate (3) and vertically blocked and matched with the pressing plate, and a vertically arranged screw rod (5) in threaded connection with a threaded hole of the internal thread sliding block (4) and rotationally connected with the rack (1) at the end part.

2. The pressing mechanism for rough machining of parts according to claim 1, characterized in that the internal thread sliding block (4) is in transverse sliding fit with the pressing plate (3) through an internal transverse sliding structure, the internal transverse sliding structure comprises a vertical strip-shaped hole (6) formed in the pressing plate (3), an internal transverse sliding groove (7) formed in the long-edge hole wall of the vertical strip-shaped hole (6) and an internal sliding end (8) formed by protruding the side wall of the internal thread sliding block (4) to be in sliding fit with the internal transverse sliding groove (7), the internal thread sliding block (4) is located in the vertical strip-shaped hole (6), and the side wall provided with the internal sliding end is attached to the long-edge hole wall of the vertical strip-shaped hole (6).

3. The pressing mechanism for rough machining of parts is characterized in that the vertical sliding block (2) is in vertical sliding fit with the rack (1) through a vertical sliding structure, the vertical sliding structure comprises a vertical sliding rail (9) fixed on the rack (1) and a vertical sliding chute (10) arranged on one side of the vertical sliding block (2) and in sliding fit with the vertical sliding rail (9), and the other side of the vertical sliding block (2) is in horizontal sliding fit with the pressing plate (3).

4. The pressing mechanism for rough machining of parts as claimed in claim 1, characterized in that the vertical sliding block (2) is in transverse sliding fit with the pressing plate (3) through an outer transverse sliding structure, and the outer transverse sliding structure comprises an outer transverse sliding groove (11) arranged on the side wall of the pressing plate (3) and a transverse sliding rail (12) which is in sliding fit with the outer transverse sliding groove (11) and is connected with the vertical sliding block (2) into a whole.

5. The pressing mechanism for rough machining of parts as claimed in claim 1, characterized in that the pressing end of the pressing plate (3) is provided with a slope (13), the top end of the slope is close to the screw, the bottom end of the slope is far away from the screw, and the bottom end of the pressing end extends obliquely downwards.

6. The pressing mechanism for rough machining of parts as claimed in any one of claims 1 to 5, wherein the frame (1) is a frame structure, the pressing assembly is located in an inner cavity of the frame, and the pressing end of the pressing plate (3) is located outside the frame.

7. The pressing mechanism for rough machining of parts as claimed in any one of claims 1 to 5, characterized in that a driving handle (14) is mounted at the top end of the screw (5).

8. The pressing mechanism for rough machining of parts as claimed in any one of claims 1 to 5, characterized in that an auxiliary frame (20) is arranged outside the machine frame (1), the machine frame (1) is longitudinally slidably mounted on the auxiliary frame (20), and the pressing end of the pressing plate (3) can extend out of the auxiliary frame (20) through transverse sliding.

9. The part machining tool for rough machining of parts comprises a base (15) and two clamp units arranged at the upper end of the base (15) and based on a double-end screw rod, wherein each clamp unit comprises a double-end screw rod (16) rotatably arranged on the base (15) and a clamp block (17) in threaded connection with the double-end screw rod (16) and in sliding fit with the base (15), and is characterized in that the pressing mechanism of any one of claims 1-7 is installed at the top end of the clamp block (17), a rack (1) of the pressing mechanism is transversely slidably installed at the top end of the clamp block (17) through a sliding structure, and the rack (1) is matched with a vertical stop at the top end of the clamp block (17).

10. The utility model provides a parts machining frock for parts rough machining, includes base (15) and sets up two anchor clamps units based on double-end lead screw in base (15) upper end, anchor clamps unit is including rotating double-end lead screw (16) that sets up on base (15), threaded connection on double-end lead screw (16) and with base (15) sliding fit's tong block (17), its characterized in that install claim 8 on the top of tong block (17) hold-down mechanism, hold-down mechanism's auxiliary frame (20) are through the horizontal sliding mounting in tong block (17) top of sliding construction, frame (1) and the vertical stop cooperation in tong block (17) top.

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