Special clamp for inclined plane guide rail and machining precision control method

Abstract

The invention relates to the technical field of press machine equipment, in particular to a special clamp for machining an inclined plane guide rail installed on a hot die forging press machine and a machining precision control method. The special clamp for the bevel guide rail comprises a tool assembly used for fixing a workpiece and a detection assembly used for detecting the size of a to-be-machined face of the workpiece, the workpiece is fixed to a workbench through the tool assembly, the to-be-machined face is horizontally upward, and cutting machining is facilitated; the detection assembly comprises a detection tool fixed to the machine tool spindle and a detection module fixed to the tool assembly, the detection module is provided with a horizontal reference face used for detecting the to-be-machined face of the workpiece, and the horizontal reference face and the to-be-machined inclined face are located in the same horizontal plane. According to the special clamp, the special supporting tool is adaptively designed according to the angle of each slope, the detection module assisting in detection reference is designed on the supporting tool, the problem that clamping positioning and detection reference are difficult to determine when multiple slopes of the slope guide rail are machined is solved, and precise machining control over the slope guide rail is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of press equipment, and in particular to a special fixture for machining an inclined surface guide rail installed on a hot die forging press and a machining accuracy control method. Background Art

[0002] The upper and lower guide rails in the HGP hot die forging press are inclined guide rails, and their cross-sectional diagram is as follows: Figure 1 As shown in the figure, since the inclined rail has multiple inclined surfaces, the dimensional accuracy of each inclined surface is required to be high during cutting. The machining accuracy control of the rail requires special fixtures for positioning and synchronous auxiliary detection during machining. Since the self-inspection process of the part requires relatively symmetrical reference objects to complete the machining size control and accuracy detection. Figure 1 The inclined guide rail shown in the figure has a certain non-right angle between each adjacent inclined surface. The reference datum for processing and testing of each inclined surface is difficult to fix. Special processing positioning tooling and testing tooling need to be designed to ensure the accuracy of processing and testing. Summary of the invention

[0003] In view of the problem that the machining accuracy of inclined surface guide rails is difficult to control in the prior art, the present invention provides a special fixture specially used for inclined surface guide rails and a machining accuracy control method. According to the angle of the inclined surface, a special fixture adapted to different inclined surface angles and a special detection mold for detecting the size of the machining surface at any time are designed to realize precise control of the machining accuracy of the inclined surface guide rails.

[0004] To achieve the above-mentioned purpose, the present invention first provides a special fixture for a bevel guide rail, which can be used for adaptive clamping and fixing of the fixture angles during machining of the bevel guide rail and for auxiliary detection of the bevel dimensions.

[0005] The special fixture for the bevel guide rail of the present invention comprises a tooling assembly for fixing the workpiece and a detection assembly for detecting the size of the surface to be processed of the workpiece, and is characterized in that the tooling assembly fixes the workpiece on the workbench and makes the surface to be processed horizontally upward to facilitate cutting processing, and the detection assembly comprises a gauge fixed on the spindle of the machine tool and a detection module fixed on the tooling assembly, and the detection module is provided with a horizontal reference plane for detecting the processed surface of the workpiece, and the horizontal reference plane and the bevel surface to be processed are located in the same horizontal plane.

[0006] The beneficial effects of the special clamp for the inclined guide rail of the present invention are as follows: according to the precision requirements for the inclined surface processing of multiple different angles of the inclined guide rail, a tooling assembly and a detection assembly specially used for fixing the workpiece are designed; when processing different inclined surfaces, the workpiece to be processed is clamped and fixed according to the requirements of the clamping angle through the tooling assembly, so that each inclined surface to be processed is horizontally upward after clamping, which is convenient for cutting processing; at the same time, a detection module is arranged on the tooling assembly, and a horizontal reference surface for detecting the size of the processed inclined surface is arranged on the detection module, so that the final processed surface and the detection participating surface are located on the same horizontal plane, which is convenient for monitoring and control at any time through the inspection fixture connected to the main shaft, thereby ensuring the precise processing control of each inclined surface.

[0007] In order to facilitate adaptive clamping and auxiliary detection of different inclined surfaces, the tooling assembly for fixing the workpiece includes a triangular support seat and a workpiece pressing assembly. The cross-section of the triangular support seat is a right-angled triangle. The inclined side surface of the triangular support seat is used to support the workpiece. One of the right-angled side surfaces of the triangular support seat is fixed to a horizontal workbench or fixed to the horizontal workbench after being supported by an inclined surface base. The workpiece pressing assembly is fixed to the inclined side surface of the triangular support seat to press the workpiece on the inclined side surface. The inclined surface base is provided with a first supporting inclined surface and a second supporting inclined surface. The first supporting inclined surface and the second supporting inclined surface are parallel to each other and transition through a vertical surface. When the triangular support seat is fixed on the inclined plane base, one of the right-angled side surfaces of the triangular support seat is fixed to the first supporting inclined plane by bolts, and the workpiece is fixedly clamped on the inclined plane base by a side pressure block assembly and a workpiece clamping assembly, and the side pressure block assembly is fixed to the second supporting inclined plane and presses against the workpiece from the side of the workpiece; When the triangular support seat is fixed on the water table workbench, one of the right-angled sides of the triangular support seat is fixed to the horizontal workbench, the workpiece is fixed on the inclined side of the triangular support seat and fixed by the workpiece pressing assembly and the bottom support block, and the bottom support block is fixedly supported on the horizontal workbench; The detection module is fixed on the upward acute angle surface of the triangular support seat, and the horizontal reference surface of the detection module is parallel to or located on the same horizontal plane as the cutting surface of the workpiece; the inspection fixture is used to detect the size of the cutting surface of the workpiece.

[0008] The cross section of the triangular support seat is an isosceles right triangle, the corners corresponding to the two 45° bottom angles of the triangular support seat are both chamfered into right angles, and the detection module is fixed in cooperation with the corresponding right-angle chamfered parts.

[0009] In order to adaptively adjust the angle of the processed bevel to a horizontal direction, a plurality of wedge blocks are provided between the bottom side of the bevel base and the workbench to adjust the angles of the first supporting bevel and the second supporting bevel so that the surface to be processed of the fixed workpiece is in a horizontal direction.

[0010] In order to further adapt to multiple inclined surfaces at different angles, the wedge blocks are provided with several groups with different angles. The same group of wedge blocks is provided with at least two wedge blocks with the same angle and size. The inclined surface base and the wedge blocks and the wedge blocks and the triangular support seat are fixed by several bolts. Different groups of wedge blocks respectively adaptively support the workpiece to adjust the different surfaces to be processed to a horizontal position.

[0011] In order to further firmly fix the workpiece, the side pressure block assembly includes at least two pressure blocks fixed on the second supporting inclined surface, and the pressure blocks are provided with screw holes, and screw rods for pressing against the side of the limiting workpiece are screwed into the screw holes.

[0012] To facilitate the pressing of the workpiece on the triangular support seat, the workpiece pressing assembly includes a pressing rod for pressing the workpiece, and long pull rods fixedly arranged at both ends of the workpiece supporting position on the triangular support seat. The pressing rod is sleeved with the long pull rod and is tightened and fixed by nuts to press the workpiece.

[0013] In order to adapt to the detection and control of different inclined surface sizes, the detection modules are divided into several groups, and each group is matched with a processing surface of a corresponding workpiece.

[0014] In order to facilitate the control of the machining accuracy of the inclined surface guide rail, the present invention also provides a method for controlling the machining accuracy of the inclined surface guide rail using the above-mentioned special clamp, which is clamped and fixed and controls the machining dimensional accuracy by the following method: The first step is to determine the inclined surface that is easy to clamp and ensure as the inclined surface for the first processing according to the angles of each inclined surface of the inclined surface guide rail, and fix the workpiece on the inclined side surface of the triangular support seat through the tooling assembly for fixing the workpiece, so that the surface to be processed faces up; then fix the corresponding detection module at the angle on the upper side of the triangular support seat, and make the horizontal reference surface of the detection module face up, fix the inspection fixture on the machine tool spindle, and adjust the position of the horizontal reference surface of the detection module to the designed position; The second step is to start the machining process to machine the workpiece until the machining surface after cutting is in the same plane as the horizontal reference surface through the inspection fixture monitoring, and the first bevel machining is completed; The third step is to adjust the position of the workpiece on the triangular support seat and clamp and position other processing surfaces. When clamping, use the processed inclined surface as the reference surface to fit and support it on the inclined side surface of the triangular support seat, fix the inclined surface base on the horizontal workbench, and determine whether to use a wedge block to support the inclined surface base to adjust the surface to be processed to be horizontal according to the relative angle between the inclined surface to be processed and the reference surface. Then fix the workpiece and the corresponding detection module, start the processing process, and complete the processing process of a guide rail inclined surface by monitoring the cutting process through the inspection fixture and the horizontal reference surface of the detection module. Repeat this step to complete the processing of other inclined surfaces.

[0015] The processing accuracy control method of the above-mentioned inclined surface guide rail of the present invention first uses the inclined surface that is most convenient for clamping as the first processing inclined surface for clamping processing according to the size and angle of the inclined surface, and then uses the first inclined surface as a reference to adjust the clamping angles of other inclined surfaces to be processed by means of the coordinated use of tooling components and wedge blocks, so that the reference surfaces of the inclined surface to be processed and the detection module are all oriented horizontally upward, which is convenient for cutting processing and processing size control, and solves the problem that the size detection reference object is difficult to determine during the self-inspection process of inclined surface processing at multiple different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the inclined guide rail.

[0017] Figure 2 A schematic diagram of the clamping of the special clamp for the inclined guide rail of the present invention.

[0018] Figure 3 Schematic diagram of the inclined base.

[0019] Figure 4 It is a schematic diagram of the special clamp of the inclined surface guide rail of the present invention used for the initial processing of the inclined surface clamping.

[0020] Figure 5 One of the clamping schematic diagrams of the special clamp for the inclined surface guide rail of the present invention is used for processing other inclined surfaces.

[0021] Figure 6 The second schematic diagram of the clamping of the special clamp of the inclined surface guide rail of the present invention for processing other inclined surfaces.

[0022] In the figure, 1 is a triangular support seat; 1A is a right-angle chamfer; 2 is a bevel base; 201 is a first supporting bevel; 202 is a vertical surface; 203 is a second supporting bevel; 3 is a wedge block; 4 is a detection module; 4A is a horizontal reference surface; 5 is a gauge; 6 is a workpiece clamping assembly; 601 is a pressure rod; 602 is a long pull rod; 603 is a nut; 7 is a side pressure block assembly; and 8 is a bottom support block.

[0023] Below Figure 1 Taking the processing of the inclined surface guide rail as an example, the special fixture of the inclined surface guide rail of the present invention and the processing accuracy control method when the special fixture is used to process the inclined surface guide rail are described in detail in embodiments. Example

[0024] This embodiment first describes in detail the special clip of the inclined guide rail. Figure 2As shown, it includes a tooling assembly for fixing the workpiece and a detection assembly for detecting the size of the workpiece surface to be processed. The tooling assembly fixes the workpiece on the workbench and makes the surface to be processed horizontally upward to facilitate cutting. The detection assembly includes a gauge 5 fixed on the machine tool spindle and a detection module 4 fixed on the tooling assembly. The detection module is provided with a horizontal reference surface 4A for detecting the workpiece surface to be processed. The horizontal reference surface 4A and the guide rail inclined surface to be processed are located in the same horizontal plane and are used for reference monitoring of processing detection.

[0025] In order to facilitate adaptive clamping and auxiliary detection of different inclined surfaces of the inclined guide rail, in this embodiment, the tooling assembly for fixing the workpiece includes a triangular support seat 1 and a workpiece pressing assembly 6, wherein the cross-section of the triangular support seat 1 is a right-angled triangle, the inclined side surface of the triangular support seat 1 is used to support the workpiece, and one of the right-angled side surfaces of the triangular support seat 1 is fixed to the horizontal workbench or fixed to the horizontal workbench after being supported by the inclined base 2; the workpiece pressing assembly 6 is fixed to the inclined side surface of the triangular support seat 1 to press the workpiece on the inclined side surface; Figure 3 As shown, the inclined plane base 2 is provided with a first supporting inclined plane 201 and a second supporting inclined plane 203, the first supporting inclined plane 201 and the second supporting inclined plane 203 are parallel to each other and transitionally connected by a vertical plane 202; the cross-section of the triangular support seat 1 is an isosceles right triangle, and the corners corresponding to the two 45° bottom angles of the triangular support seat 1 are both chamfered into right-angle chamfers 1A, and the detection module 4 is fixed to the corresponding right-angle chamfered position and fixed by bolts.

[0026] According to the need of workpiece angle adjustment, such as Figure 4 As shown, when the triangular support seat 1 is fixed on the inclined surface base 2, one of the right-angled side surfaces of the triangular support seat 2 is fixed to the first supporting inclined surface 201 by bolts, and threaded holes and connecting holes are pre-arranged at corresponding positions on the first supporting inclined surface and the triangular support seat respectively; in order to fix the workpiece, the workpiece is fixedly clamped on the inclined surface base 2 by the side pressure block assembly 7 and the workpiece clamping assembly 6, and the side pressure block assembly 7 is fixed on the second supporting inclined surface 203 and pressed against the workpiece from the side of the workpiece by the pressing bolt.

[0027] like Figure 4 As shown, when the triangular support seat 1 is fixed on the water platform workbench, one of the right-angled sides of the triangular support seat 1 is fixed to the horizontal workbench by a number of bolts, and the workpiece is fixed on the inclined side of the triangular support seat 1 and fixed by the workpiece clamping assembly 6 and the bottom support block 8, and the bottom support block 8 is fixedly supported on the horizontal workbench.

[0028] like Figure 2 and Figure 5As shown, in response to the angle adjustment requirements of different inclined surfaces, in order to adaptively adjust the angle of the processed inclined surface to the horizontal direction, the bottom side of the inclined surface base 2 and the workbench can also be supported by a plurality of wedge blocks 3 with the same angle to adjust the angle of the first supporting inclined surface 201 and the second supporting inclined surface 203, so that the surface to be processed of the workpiece after fixed clamping is in the horizontal direction; in order to further adapt to multiple inclined surfaces with different angles, the wedge blocks 3 are provided with a plurality of groups with different angles, and the same group of wedge blocks 3 is provided with at least two wedge blocks 3 with the same angle and size, and the inclined surface base 2 and the wedge blocks 3 and the wedge blocks 3 and the triangular support seat 1 are fixed by a plurality of bolts, and different groups of wedge blocks 3 adaptively support the workpiece respectively to adjust the different surfaces to be processed to the horizontal position accordingly.

[0029] The detection module 4 of this embodiment is fixed on the right-angle chamfer 1A of the upward acute-angle surface of the triangular support seat 1, and the horizontal reference plane of the detection module 4 is parallel to or located in the same horizontal plane as the cutting surface of the workpiece; the inspection fixture 5 is used to detect the size of the cutting surface of the workpiece. When it is detected that the cutting surface and the horizontal reference plane are located in the same horizontal plane, the cutting of the processing surface is completed and the size meets the design requirements.

[0030] The side pressure block assembly 7 of this embodiment includes at least two pressure blocks fixed on the second supporting inclined surface 203. The pressure blocks are provided with screw holes, and screw rods for pressing against the side surfaces of the limiting workpiece are screwed into the screw holes.

[0031] like Figure 2 As shown, in order to facilitate further firmly pressing the workpiece onto the triangular support seat 1, the workpiece pressing assembly 6 includes a pressing rod 601 for pressing the workpiece, and long pull rods 602 are fixedly connected at both ends of the workpiece supporting position on the triangular support seat 1. The pressing rod 601 is sleeved with the long pull rod 602 and is tightened and fixed by a nut 603 to press the workpiece.

[0032] In order to adapt to the detection and control of different inclined surface sizes, there are also several groups of detection modules 4, each group is matched with a corresponding processing surface of the workpiece. According to the processing surface and the position of the workpiece after clamping, a dedicated detection module 4 is adaptively designed for each inclined surface to be processed, forming a horizontal reference surface 4A for detecting the size of the inclined surface to be processed.

[0033] The special fixture of the inclined plane guide rail of the present embodiment is designed according to the precision requirements of the inclined plane machining of multiple different angles of the inclined plane guide rail, and a tooling assembly and a detection assembly specially used for fixing the workpiece are matched. When machining different inclined planes, the workpiece to be machined is clamped and fixed according to the requirements of the clamping angle through the tooling assembly, so that each inclined plane to be machined is oriented horizontally upward after clamping, which is convenient for cutting. At the same time, a detection module is arranged on the tooling assembly, and a horizontal reference surface for detecting the size of the machined inclined plane is arranged on the detection module, so that the machined surface after the final machining and the detection participating surface are located on the same horizontal plane, which is convenient for monitoring and control at any time through the inspection fixture connected to the main shaft, so as to ensure the precise machining control of each inclined plane. Example

[0034] This embodiment uses the above-mentioned special fixture to perform Figure 1 The machining accuracy control method of the inclined guide rail shown in the figure clamps the workpiece and controls the machining dimensional accuracy by the following method: The first step is to determine the inclined surface that is easy to clamp and ensure as the first inclined surface to be processed according to the angle of each inclined surface of the inclined surface guide rail. Generally, the workpiece blank when processing the first inclined surface for the first time is a blank with a square cross section. Figure 1 The size of the triangle support seat is determined by first determining the inclined surface to be processed at 45° from the supporting inclined surface of the triangle support seat as the inclined surface to be processed for the first time. When the inclined surface is fixed, it can be Figure 3 As shown, the triangular support seat 1 can be directly fixed on the horizontal workbench of the machine tool. After the triangular support seat 1 is fixed to the horizontal workbench, the workpiece blank is reinforced and fixed by the workpiece clamping assembly 6 and the bottom support block 8, and then the dedicated detection module 4 suitable for the inclined surface is fixed on the right-angle chamfer 4A of the upward acute angle of the triangular support seat. The horizontal reference surface of the fixed detection module 4 is the same horizontal surface as the processed inclined surface, that is, the first inclined surface; The second step is to start the machining process to the sharp corners of the workpiece from the top upward ( Figure 3 The dotted line portion in the figure is the portion to be cut) starts cutting until the machining surface after cutting is monitored by the inspection fixture 5 and the horizontal reference surface 4A is in the same plane, completing the first bevel machining; The third step is to adjust the position of the workpiece on the triangular support seat and clamp and position other processing surfaces. When clamping, the processed inclined surface is used as the reference surface to fit and support the inclined side surface of the triangular support seat 1, and the inclined surface base 2 is fixed on the horizontal workbench. According to the relative angle between the inclined surface to be processed and the reference surface, it is determined whether to use the wedge block 3 to support the inclined surface base 2 to adjust the surface to be processed to be horizontal. Then the workpiece and the corresponding detection module 4 are fixed, and the processing process is started until the processing surface after cutting is monitored by the inspection fixture and the horizontal reference surface 4A of the detection module 4 is located in the same plane to complete the processing process of a guide rail inclined surface. Repeat this step to complete the processing of other inclined surfaces.

[0035] During the third step of processing, the method of fixing the workpiece by the workpiece clamping assembly is divided into two cases, such as Figure 5 As shown, according to the angle of the bevel to be processed, the first supporting bevel and the second supporting bevel of the bevel base 2 are supported by a wedge block 3 at the bottom to make the bevel base 2 tilt to an appropriate angle with the horizontal workbench, so as to adjust the angle of the bevel after the workpiece is processed to be horizontal. At the same time, when processing each bevel, a pre-designed special detection module suitable for the bevel is selected and fixed to the upward right-angle chamfered part of the triangular support seat. The horizontal reference surface 4A after the tooling and the workpiece are clamped and fixed is located in the same horizontal plane as the pre-processed bevel. After one bevel is processed, the angle of the workpiece is rotated, and when another bevel to be processed is replaced, the inclination angle of the base bevel is determined according to the angle requirement of the bevel to be processed, and an appropriate wedge block is selected to support the bevel base or the bevel base is directly fixed to the horizontal workbench of the machine tool (such as Figure 6 The unsupported wedge block is shown), and then the workpiece is fixed and clamped, the detection module 4 is fixed, and then cutting and monitoring are performed until the processing surface and the horizontal reference surface are on the same level to complete the cutting of an inclined surface.

[0036] The processing accuracy control method of the above-mentioned inclined surface guide rail of the present invention first uses the inclined surface that is most convenient for clamping as the first processing inclined surface for clamping processing according to the size and angle of the inclined surface, and then uses the first inclined surface as a reference to adjust the clamping angles of other inclined surfaces to be processed by means of the coordinated use of tooling components and wedge blocks, so that the reference surfaces of the inclined surface to be processed and the detection module are all oriented horizontally upward, which is convenient for cutting processing and processing size control, and solves the problem that the size detection reference object is difficult to determine during the self-inspection process of inclined surface processing at multiple different angles.

Claims

1. A special fixture for a thermal bevel guide rail, comprising a fixture assembly for fixing a workpiece and a detection assembly for detecting the size of the workpiece surface to be processed, characterized in that: The tooling assembly fixes the workpiece on the workbench and makes the surface to be processed horizontally upward to facilitate cutting processing. The detection assembly includes a gauge fixed on the machine tool spindle and a detection module fixed on the tooling assembly. The detection module is provided with a horizontal reference plane for detecting the surface to be processed of the workpiece. The horizontal reference plane and the inclined surface to be processed are located in the same horizontal plane.

2. The special fixture for the inclined guide rail according to claim 1, characterized in that: The tooling assembly for fixing the workpiece includes a triangular support seat and a workpiece pressing assembly. The cross section of the triangular support seat is a right triangle. The inclined side surface of the triangular support seat is used to support the workpiece. One of the right-angled side surfaces of the triangular support seat is fixed to a horizontal workbench or fixed to the horizontal workbench after being supported by an inclined plane base. The workpiece pressing assembly is fixed to the inclined side surface of the triangular support seat to press the workpiece on the inclined side surface. The inclined plane base is provided with a first supporting inclined plane and a second supporting inclined plane. The first supporting inclined plane and the second supporting inclined plane are parallel to each other and transition through a vertical plane. When the triangular support seat is fixed on the inclined plane base, one of the right-angled side surfaces of the triangular support seat is fixed to the first supporting inclined plane by bolts, and the workpiece is fixedly clamped on the inclined plane base by a side pressure block assembly and a workpiece clamping assembly, and the side pressure block assembly is fixed to the second supporting inclined plane and presses against the workpiece from the side of the workpiece; When the triangular support seat is fixed on the water table workbench, one of the right-angled sides of the triangular support seat is fixed to the horizontal workbench, the workpiece is fixed on the inclined side of the triangular support seat and fixed by the workpiece pressing assembly and the bottom support block, and the bottom support block is fixedly supported on the horizontal workbench; The detection module is fixed on the upward acute angle surface of the triangular support seat, and the horizontal reference surface of the detection module is parallel to or located on the same horizontal plane as the cutting surface of the workpiece; the inspection fixture is used to detect the size of the cutting surface of the workpiece.

3. The special fixture for the inclined guide rail according to claim 2, characterized in that: The cross section of the triangular support seat is an isosceles right triangle, the corners corresponding to the 45-degree bottom angles of the triangular support seat are all chamfered into right angles, and the detection module is fixed in cooperation with the corresponding right-angle chamfered parts.

4. The special fixture for hot die forging inclined guide rail according to claim 2, characterized in that: A plurality of wedge blocks are also provided between the bottom side of the inclined plane base and the workbench to adjust the angles of the first supporting inclined plane and the second supporting inclined plane so that the surface to be processed of the fixed workpiece is in a horizontal direction.

5. The special fixture for the inclined guide rail according to claim 3, characterized in that: The wedge blocks are provided in several groups with different angles, and the same group of wedge blocks is provided with at least two wedge blocks with the same angle and size. The inclined base and the wedge blocks and the wedge blocks and the triangular support seat are fixed by several bolts. Different groups of wedge blocks respectively adaptively support the workpiece to adjust the different surfaces to be processed to a horizontal position.

6. The special fixture for the inclined guide rail according to claim 2, characterized in that: The side pressure block assembly comprises at least two pressure blocks fixed on the second supporting inclined surface. The pressure blocks are provided with screw holes, and screw rods for pressing against the side surfaces of the limiting workpiece are screwed in the screw holes.

7. The special fixture for the inclined guide rail according to claim 2, characterized in that: The workpiece pressing assembly comprises a pressing rod for pressing the workpiece, and long pull rods fixedly arranged at both ends of the workpiece supporting position on the triangular support seat. The pressing rod is sleeved with the long pull rods and is tightened and fixed by nuts to press the workpiece.

8. The special fixture for the inclined guide rail according to claim 2, characterized in that: There are several groups of detection modules, and each group of detection modules corresponds to a bevel to be processed of the workpiece.

9. A method for controlling the machining accuracy of an inclined guide rail, characterized in that: The hot die forged inclined guide rail is clamped and fixed by the special fixture described in any one of claims 1 to 8 and the processing dimensional accuracy is controlled by the following method: The first step is to determine the inclined surface to be processed for the first time according to the angles of the inclined surfaces of the inclined guide rail, and fix the workpiece on the inclined side surface of the triangular support seat through the tooling assembly for fixing the workpiece, so that the surface to be processed faces up; then fix the corresponding detection module at the angle on the upper side of the triangular support seat, and make the horizontal reference surface of the detection module face up, fix the inspection fixture on the machine tool spindle, and adjust the position of the horizontal reference surface of the detection module to the designed position; The second step is to start the machining process to machine the workpiece until the machining surface after cutting is in the same plane as the horizontal reference surface through the inspection fixture monitoring, and the first bevel machining is completed; The third step is to adjust the position of the workpiece on the triangular support seat and clamp and position other processing surfaces. When clamping, use the processed inclined surface as the reference surface to fit and support it on the inclined side surface of the triangular support seat, fix the inclined surface base on the horizontal workbench, and determine whether to use a wedge block to support the inclined surface base to adjust the surface to be processed to be horizontal according to the relative angle between the inclined surface to be processed and the reference surface. Then fix the workpiece and the corresponding detection module, start the processing process, and complete the processing process of a guide rail inclined surface by monitoring the cutting process through the inspection fixture and the horizontal reference surface of the detection module. Repeat this step to complete the processing of other inclined surfaces.

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