CN114083258B

CN114083258B - Gap adjustment process method for mounting straightness and splicing of rack

Info

Publication number: CN114083258B
Application number: CN202111564868.0A
Authority: CN
Inventors: 崔德友; 任东; 朱剑; 陈建
Original assignee: Jiangsu Create Precision Technology Co ltd
Current assignee: Jiangsu Create Precision Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2023-03-21
Anticipated expiration: 2041-12-20
Also published as: CN114083258A

Abstract

The invention discloses a rack installation straightness and splicing gap adjusting process method, which comprises the following steps: placing two rack sections on a rack mounting surface, and enabling the ends and the ends of the two rack sections to be in a pre-splicing posture; respectively placing round rods for measurement in three tooth grooves, namely any one tooth groove of each of the two rack sections and a tooth groove formed between the ends of the two rack sections; measuring the position of the round bar to obtain three measured values corresponding to the three tooth sockets; judging whether the relative errors of the three measured values are greater than a threshold value, if so, adjusting the splicing gap of the two rack segments so that the relative errors of the three measured values are not greater than the threshold value; fastening the two rack segments to be in a formal splicing state; and repeating the steps until the whole rack is spliced and installed. The invention can ensure that the racks have good straightness after being spliced and ensure that the adjacent rack sections have splicing gaps meeting the assembly requirements after the racks are spliced.

Description

Gap adjustment process method for mounting straightness and splicing of rack

Technical Field

The invention relates to the technical field of racks, in particular to a process method for adjusting installation straightness and splicing gap of a rack.

Background

The transmission chain of the gear rack is used as a transmission system of machine tool equipment, and the assembly precision of the gear and the rack can directly influence the machining precision of the machine tool equipment. At present, when a transmission chain of a gear rack is assembled, the gear rack is firstly installed on machine tool equipment, and then the gear and the gear rack are assembled. The rack of the machine tool equipment is often long, and the rack is inconvenient to machine and mount in a whole root mode. Therefore, the existing rack is processed in sections, and then the processed rack sections are spliced and mounted on a rack mounting surface of machine tool equipment. If the straightness and the splicing gap of the rack splicing installation cannot meet the requirements, the assembling precision of the rack and the gear is poor, and the machining precision of machine tool equipment is affected.

The splicing installation mode of the existing rack generally comprises the following steps: a first rack section is pre-tightened by a bolt at a rack mounting surface on machine tool equipment; the splicing rack segments are installed by the aid of the left-hand thread gauge, wherein the splicing rack is moved back and forth, so that tooth surfaces of the left-hand thread gauge are in contact with tooth surfaces of splicing positions of two adjacent rack segments, and splicing gaps of the two adjacent rack segments are guaranteed; fastening the splicing rack segment at the rack mounting surface by using a clamp, and completely tightening the splicing rack by using a bolt with a fastening torque with the strength of 12.9; and repeating the splicing process to splice to obtain the whole rack. However, in the existing rack splicing and mounting mode, the rack segments are spliced by the aid of the back-off tooth gauges, only rough splicing of the rack segments can be realized, and the height deviation of each spliced rack segment cannot be consistent, so that the straightness of the spliced rack cannot be effectively guaranteed.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a process for adjusting installation linearity and a splicing gap of a rack, which can ensure that the rack has good linearity after splicing and ensure that a splicing gap meeting assembly requirements exists between adjacent rack segments after splicing.

In order to achieve the above object, an embodiment of the present invention provides a process for adjusting installation straightness and a splicing gap of a rack, including:

placing two rack sections on a rack mounting surface of a base, and enabling the ends and the ends of the two rack sections to be in a pre-splicing posture, wherein tooth grooves of the two rack sections are arranged on the same side;

respectively placing a round bar for measurement in three tooth grooves, namely, any tooth groove of each rack segment in the two rack segments and a tooth groove formed between the ends of the two rack segments, and enabling the round bar for measurement to be tightly attached to two opposite side walls of the tooth groove;

measuring the position of the round bar to obtain three measured values corresponding to the three tooth sockets;

judging whether the relative errors of the three measured values are larger than a threshold value or not, if so, adjusting the splicing gap of the two rack segments so that the relative errors of the three measured values are not larger than the threshold value;

fastening the two rack segments to be in a formal splicing state; and a process for the preparation of a coating,

and repeating the steps until the whole rack is spliced and installed.

As an improvement of the above, the first rack segment mounting step includes:

the measuring the position of the round bar to obtain three measurement values corresponding to the three tooth slots comprises:

and respectively sliding the dial indicator which linearly slides on one side of the rack mounting surface of the base to three measuring positions corresponding to the three tooth grooves, and enabling the measuring end of the dial indicator to be rightly abutted against the surface of the round bar.

As an improvement of the above scheme, said making the ends of the two rack segments in the pre-splicing posture comprises:

splicing the ends of the two rack sections with the ends of the two rack sections by using a left-hand thread gauge, and clamping the two rack sections on the rack mounting surface by using a preset number of clamps;

and sequentially pre-tightening the screw holes of the rack segments and the corresponding screw holes on the rack mounting surface by bolts with pre-tightening torque according to the sequence from left to right.

As an improvement of the above, when the first rack segment is mounted on the rack mounting surface of the housing, the first rack segment is mounted in the following manner:

aligning screw holes on the first rack segment with screw holes at preset positions of a rack mounting surface of a base one by one, and clamping the first rack segment on the rack mounting surface by using a preset number of clamps;

and completely screwing the screw hole of the first rack segment and the corresponding screw hole on the rack mounting surface by bolts with fastening torque in sequence from left to right.

As an improvement of the above, before the first rack segment is mounted, the method further comprises:

cleaning a rack mounting surface of the base;

checking the parallelism of the rack mounting surface relative to a linear guide rail of the base, and enabling the parallelism of the rack mounting surface relative to the linear guide rail to be within a preset parallelism deviation range;

and placing each rack segment on the base for a preset time until the absolute value of the temperature difference between each rack segment and the base is smaller than a preset temperature difference threshold value.

As an improvement of the above, the adjusting the splicing gap of the two rack segments so that the relative error of the three measurement values is not greater than the threshold value includes:

adjusting the splice gap of the two rack segments so that the relative error of the three measurements is within the 30um range and so that the round bar is in the two rack segments the measurements of the tooth slots formed between the ends are located between the round bar and the two measurements of the corresponding tooth slots of the two rack segments.

As an improvement of the above aspect, the fastening the two rack segments to be in a formal splicing state includes:

clamping the two rack segments on the rack mounting surface with a preset number of clamps;

and completely screwing the screw holes of the two rack segments and the corresponding screw holes on the rack mounting surface by bolts in turn according to the sequence from left to right by using fastening torque.

As an improvement of the above scheme, after the above steps are repeated until the whole rack is spliced and installed, the method further comprises the following steps:

and (5) checking the parallelism of the whole rack relative to the linear guide rail of the machine base.

As an improvement of the above solution, the checking the parallelism of the whole rack with respect to the linear guide of the machine base comprises:

fixing a dial indicator on a sliding seat of the machine base, which is matched with the linear guide rail;

respectively sliding a micrometer which linearly slides on one side of a rack mounting surface of the base to a measuring position of a corresponding tooth groove on each rack section, and enabling a measuring end of the micrometer to rightly abut against the surface of the round bar to obtain a measured value of the corresponding tooth groove on each rack section;

and calculating to obtain the parallelism measurement result of the whole rack relative to the linear guide rail of the machine base according to the measured value of the corresponding tooth groove on each rack segment.

As an improvement of the above solution, after the parallelism of the whole rack with respect to the linear guide of the machine base is checked, the method further comprises:

clamping each rack segment with the reserved positioning hole on the rack mounting surface by using a preset number of clamps;

penetrating the positioning hole of the rack segment by using a positioning pin and fastening the rack segment on the rack mounting surface;

and cleaning the whole rack.

Compared with the prior art, the mounting straightness and splicing gap adjustment process method for the rack provided by the embodiment of the invention has the advantages that when the rack is spliced, the relative errors of the measured values of three positions of the tooth grooves formed by the round rod at any position of the tooth grooves of the two rack segments to be spliced and the end positions of the two rack segments are within the preset threshold value, so that the measured value of the tooth groove of the same round rod at the splicing position of the rack segments is almost consistent with the measured value of the standard tooth groove of the two rack segments to be spliced, the splicing gap meeting the assembly requirement between the adjacent rack segments can be ensured, the height deviation difference of the spliced rack segments is small, and the spliced rack has good straightness.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a plan view of a partial structure of a machine tool apparatus according to an embodiment of the present invention;

FIG. 2 is a side view of a partial structure of a machine tool apparatus according to an embodiment of the present invention;

fig. 3 is a flow chart of a process for adjusting the installation straightness and splicing gap of a rack according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of the use of a back-out gauge to splice two rack segments in one embodiment of the present invention;

FIG. 5 is a schematic illustration of measurements of a measuring rod at a tooth slot in an embodiment of the present invention;

fig. 6 is a schematic view of positioning a rack in an embodiment of the invention.

Reference is made to the accompanying drawings in which: 1. a machine base; 2. a slide base; 3. a linear slide rail; 4. a rack; 40. a rack segment; 5. a gear; 6. a rack mounting block; 7. a left-hand tooth gauge; 8. a round bar; 9. and (4) a micrometer.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", and the like in this application indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed in a particular orientation, and operate, and therefore should not be construed as limiting embodiments of the present invention.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

For convenience of understanding, referring to fig. 1 and 2, as an example, the rack 4 of the following embodiments of the present invention is mounted on a machine tool apparatus having a base 1, a slide 2, a linear guide 3, a rack 4, and a gear 5. Wherein, as the example, the both sides arch of frame 1 is equipped with linear slide 3, the top surface at the middle part of frame 1 is relative the both sides of frame 1 are sunken, the top surface at the middle part of frame 1 is equipped with rack installation piece 6, rack installation piece 6 along the length direction setting of frame 1 is relative the both sides of frame 1 are parallel. One side surface of the rack mounting block 6 along the length direction is a mounting surface of the rack 4, and the mounting surface of the rack 4 is vertical to the top surface of the linear sliding rail 3. Machine tool equipment after having installed, rack 4 is installed 4 installation face departments of rack, gear 5 is rotatable to be fixed in the bottom of slide 2, just the bottom department of slide 2 gear 5 with install 4 meshes mutually of rack, the bottom of the both sides of slide 2 is equipped with the spout, the spout of the bottom of the both sides of slide 2 with the linear slide rail 3 that the both sides of frame 1 were equipped with corresponds the cooperation. In order not to affect the machining precision of machine tool equipment, the straightness and the splicing gap of splicing and mounting the rack 4 need to be ensured to meet the requirements. Based on this, the following clearance adjustment process method of the mounting straightness and the splice of the rack 4 of the machine tool apparatus is exemplarily provided.

Referring to fig. 3, an embodiment of the present invention provides a process method for adjusting installation straightness and splicing gap of a rack 4, which includes steps S10 to S12:

s10, placing two rack segments 40 on the installation surface of the rack 4 of the machine base 1, enabling the ends and the ends of the two rack segments 40 to be in a pre-splicing posture, and enabling tooth grooves of the two rack segments 40 to be on the same side.

As an example, the bringing the two rack segments 40 into the pre-splice attitude end-to-end includes:

s100, referring to fig. 4, splicing the two rack segments 40 end to end by using a left-hand tooth gauge 7, and clamping the two rack segments 40 on the mounting surface of the rack 4 by using a preset number of clamps;

specifically, when the two rack segments 40 to be spliced are spliced at the installation surface of the rack 4 by using the left-hand thread gauge 7, the tooth surface of the left-hand thread gauge 7 is completely contacted with the tooth surface of the splicing part of the two adjacent rack segments 40 as far as possible by moving one of the rack segments 40 back and forth, so that the splicing gap of the two adjacent rack segments 40 is preliminarily ensured. Further, by way of example, the number of the jigs for clamping each rack segment 40 corresponds to the number of the screw holes of the rack segment 40, and the jigs correspond to the screw holes of the rack segments 40 one by one; the clamp is close to the corresponding screw hole of the rack segment 40 and clamps the toothed surface of the rack segment 40 (a clamping head of the clamp and a soft material spacer for preventing collision, such as a copper sheet or a plastic sheet, can be arranged between the clamping head and the toothed surface), so that the back surface of the rack segment 40 opposite to the toothed surface is completely attached to the mounting surface of the rack 4, the rack segment 40 can be clamped on the mounting surface of the rack 4, and the position deviation cannot occur when the rack segment 40 is subsequently screwed down by bolts.

And S101, sequentially pre-tightening the screw holes of the rack segments 40 and the corresponding screw holes on the mounting surface of the rack 4 by bolts with pre-tightening torque according to the sequence from left to right.

Wherein the rack segment 40 can be accurately mounted on the mounting surface of the rack 4 by screwing the screw holes of the rack segment 40 in order from left to right. Furthermore, the pretension torque is matched, by way of example, to the class of the bolt, subject to the bolt being able to be pretensioned (i.e. partially but not fully). As an example, the pretensioning torque of the bolt corresponds to 50% of the tightening torque of the bolt. It can be understood that the rack segment 40 is pre-screwed by bolts, so that on one hand, the rack segment 40 can be relatively fixed on the installation surface of the rack 4, and on the other hand, the rack segment 40 is also convenient to adjust the placement position on the installation surface of the rack 4, so that the splicing gap of the rack segment 40 relative to other fixed rack segments 40 can be conveniently adjusted.

S11, referring to fig. 5, respectively placing the round bar 8 for measurement in three tooth slots, namely, any one tooth slot of each of the two rack segments 40 and a tooth slot formed between the ends of the two rack segments 40, and enabling the round bar 8 to be tightly attached to two opposite side walls of the tooth slot.

And S12, measuring the position of the round bar 8 to obtain three measured values corresponding to the three tooth grooves.

As an example, the step S12 includes:

and respectively sliding the dial indicator 9 which linearly slides on one side of the installation surface of the rack 4 of the machine base 1 to three measurement positions corresponding to the three tooth sockets, and enabling the measurement end of the dial indicator 9 to be rightly abutted against the surface of the round bar 8.

Wherein, the round bar 8 can be magnetized in advance, so that the round bar 8 is tightly attached to two opposite side walls of the tooth socket.

And S13, judging whether the relative errors of the three measured values are greater than a threshold value, and if so, adjusting the splicing gap of the two rack segments 40 to ensure that the relative errors of the three measured values are not greater than the threshold value.

Wherein the splicing gap of both the rack segment 40 and the adjacent fixed rack segment 40 is adjusted by mounting and moving the rack segment 40 currently mounted on the rack 4 mounting surface. Specifically, the adjusted splicing gap between the two meets the following conditions: the relative error of the three measurements is within 30um so that the height deviation of the same round bar 8 at the tooth slot where the rack segments 40 are spliced coincides with the height deviation at the standard tooth slot on two rack segments 40 spliced with each other. In addition, the adjusted splicing gap of the two materials also meets the following conditions: the measured value of the tooth gap formed by the round bar 8 between the ends of the two rack segments 40 is located between the measured values of the round bar 8 at the corresponding tooth gaps of the two rack segments 40. Therefore, the straightness deviation of the splicing position of the rack segment 40 and the adjacent fixed rack segment 40 which are installed at present can be ensured to have transition performance, and the gear 5 can be meshed at the splicing position of the rack segment and the adjacent fixed rack segment more smoothly. As an example, the specific difference range of the height deviation of the round bar 8 at the three positions can be referred to table 1.

TABLE 1 measurement of round bar 8 at the three tooth slots

Most preferably, the measured value of the tooth gap formed between the ends of the two rack segments 40 by the round bar 8 is equal to the average of the measured values of the round bar 8 in the corresponding tooth gaps of the two rack segments 40.

And S14, fastening the two rack segments 40 to be in a formal splicing state.

Specifically, the step S14 includes steps S140 to S141:

s140, clamping the two rack segments 40 on the mounting surface of the rack 4 by using a preset number of clamps;

wherein, as an example, the number of the clamps for clamping the corresponding rack segment 40 is the same as the number of the screw holes of the rack segment 40, and the clamps correspond to the screw holes of the rack segment 40 one by one; wherein, anchor clamps should be close to the position of the corresponding screw hole of rack section 40 to clip rack section 40's the distribution has the tooth one side (the chuck of anchor clamps with can be equipped with the soft material spacer of preventing colliding with between the one side, for example copper sheet or plastic sheet), make rack section 40 with the back opposite of one side is hugged closely completely rack 4 installation face, can press from both sides rack section 40 tightly like this on rack 4 installation face, and can not take place the offset when subsequently screwing up the bolt to rack section 40.

And S141, completely screwing the screw holes of the two rack segments 40 and the corresponding screw holes on the mounting surface of the rack 4 by using bolts in turn according to the sequence from left to right by using fastening torque.

Wherein the rack segment 40 can be accurately mounted on the mounting surface of the rack 4 by screwing the screw holes of the rack segment 40 in order from left to right. Further, as an example, the fastening torque is preset and is related to the modulus of the rack 4, the length, and the grade of the bolt so that the bolt can be completely tightened. In order to enable the bolt to fix the rack segment 40 better, a screw fastening glue may be applied to the surface of the bolt in advance when the bolt is assembled with the screw hole of the rack segment 40.

And S15, repeating the steps until the whole rack 4 is spliced and installed.

In summary, compared with the prior art, in the process method for adjusting the installation straightness and the splicing gap of the rack 4 provided by the embodiment of the present invention, when the rack 4 is spliced, by ensuring that the relative error between the measured values of the circular rod 8 at any one of the tooth slots of the two rack segments 40 to be spliced and the three measured values of the tooth slots formed between the ends of the two rack segments 40 is within the preset threshold, the measured value of the same circular rod 8 at the tooth slot at the splicing position of the rack segments 40 is almost the same as the measured value at the standard tooth slot on the two rack segments 40 to be spliced, so that not only can the splicing gap meeting the assembly requirement be ensured between the adjacent rack segments 40, but also the height deviation of each rack segment 40 after splicing is not greatly different, so that the spliced rack 4 has good straightness.

As another embodiment of the present invention, when the first rack segment 40 is mounted on the rack 4 mounting surface of the housing 1, the first rack segment 40 is mounted in the following manner:

aligning the screw holes on the first rack segment 40 with the screw holes at the preset positions on the mounting surface of the rack 4 of the engine base 1 one by one, and clamping the first rack segment 40 on the mounting surface of the rack 4 by using a preset number of clamps;

the screw hole of the first rack segment 40 is completely tightened with a tightening torque by bolting the corresponding screw hole on the mounting surface of the rack 4 in order from left to right.

Wherein, this embodiment is through the screw that lets first rack segment 40 and the screw of the preset position department of rack 4 installation face aim at one by one, and the purpose is in order to let first rack segment 40 can accurately install in preset position department to prevent because first rack segment 40 installs not accurately and lead to subsequent bolt and hole site interference phenomenon appear when waiting to splice rack segment 40 and carry out bolt tightening.

In addition, specifically, the number of the clamps is consistent with the number of the screw holes of the first rack segment 40, and the clamps correspond to the screw holes of the first rack segment 40 one by one; the clamp is to be close to the position of the corresponding screw hole of the first rack segment 40 and clamp the surface, on which the teeth are distributed, of the first rack segment 40, so that the back surface, opposite to the surface, of the first rack segment 40 is completely attached to the mounting surface of the rack 4, and thus the first rack segment 40 can be clamped on the mounting surface of the rack 4 and cannot be displaced when the first rack segment 40 is subsequently screwed down.

In addition, the first rack segment 40 can be accurately mounted on the mounting surface of the rack 4 by screwing the screw holes of the first rack segment 40 in order from left to right. Further, as an example, the fastening torque is preset and is related to the modulus of the rack 4, the length, and the grade of the bolt so as to be able to completely tighten the bolt. As an example, the fastening torque of the bolts of the present embodiment and the above embodiments can refer to table 2.

TABLE 2 fastening torque of bolts

As another embodiment of the present invention, before the step of mounting the first rack segment 40, the method further includes steps S7 to S9:

s7, cleaning the mounting surface of the rack 4 of the machine base 1;

wherein, the mounting surface of the rack 4 after cleaning has no salient point.

S8, checking the parallelism of the mounting surface of the rack 4 relative to the linear guide rail of the base 1, and enabling the parallelism of the mounting surface of the rack 4 relative to the linear guide rail to be within a preset parallelism deviation range;

and checking the parallelism of the mounting surface of the rack 4 relative to the linear guide rail of the machine base 1 by using a dial indicator. In addition, the range of deviation of the parallelism (i.e., parallelism error) of the mounting surface of the rack 4 with respect to the linear guide may refer to the numerical values of table 3.

TABLE 3 deviation Range requirement for parallelism of rack 4 mounting face to linear guide

And S9, placing each rack segment 40 on the machine base 1 for a preset time until the absolute value of the temperature difference between each rack segment 40 and the machine base 1 is smaller than a preset temperature difference threshold value.

Wherein, each rack segment 40 is placed on the machine base 1 to be almost consistent with the temperature of the machine base 1, so that the installation precision of the rack segment 40 can be ensured after the rack segment 40 is installed on the installation surface of the rack 4 on the machine base 1. As an example, the preset time is 4 hours.

As another embodiment of the present invention, after repeating the above steps until the entire rack 4 is spliced and installed, the method further includes:

and S16, checking the parallelism of the whole rack 4 relative to the linear guide rail of the machine base 1.

Specifically, the step S16 includes:

s160, fixing the dial indicator on the sliding seat 2, matched with the linear guide rail, of the machine base 1;

s161, respectively sliding the micrometer which linearly slides on one side of the mounting surface of the rack 4 of the machine base 1 to the measuring position of the corresponding tooth slot on each rack segment 40, and enabling the measuring end of the micrometer to rightly abut against the surface of the round bar to obtain the measuring value of the corresponding tooth slot on each rack segment 40;

and S162, calculating and obtaining the parallelism measurement result of the whole rack 4 relative to the linear guide rail of the machine base 1 according to the measured value of the corresponding tooth slot on each rack segment 40.

Specifically, if the relative error of the measured value of the corresponding tooth slot on each rack segment 40 of the circle is within 30um, it indicates that the parallelism of the whole rack 4 with respect to the linear guide rail of the machine base 1 is good.

As another embodiment of the present invention, after the step S16, the method further includes a step S17 to a step S19:

s17, clamping each rack segment 40 with the reserved positioning holes on the mounting surface of the rack 4 by using a preset number of clamps;

illustratively, the number of the clamps for clamping the rack segment 40 is consistent with the number of the positioning holes of the rack segment 40, and the clamps correspond to the positioning holes of the rack segment 40 one by one; the fixture should be close to the position of the corresponding positioning hole of the rack segment 40, and clamp one surface of the rack segment 40 on which the teeth are distributed (a soft material spacer for preventing collision, such as a copper sheet or a plastic sheet, may be arranged between a chuck of the fixture and the one surface), so that the rack segment 40 can be clamped on the mounting surface of the rack 4, and no position deviation occurs during subsequent positioning pin assembly of the rack segment 40.

S18, a positioning pin penetrates through the positioning hole of the rack segment 40 and the rack segment 40 is fastened on the mounting surface of the rack 4;

referring to fig. 6, a positioning pin is driven into a positioning hole of the rack 4, thereby fastening the rack 4 to the rack 4 mounting surface. The assembly precision of the positioning pin and the positioning hole can be ensured by reaming and reaming the position of the reserved positioning hole of the rack 4 and reaming the reserved positioning hole on the installation surface of the rack 4. Further, as an example, the positioning pin may be an internally threaded cylindrical pin.

S19, cleaning the entire rack 4.

In the present embodiment, by positioning the positioning hole reserved for the rack 4 with the positioning pin, it is possible to more reliably fasten the rack 4 on the mounting surface of the rack 4 and prevent the rack 4 from slipping.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A rack installation straightness and splicing gap adjusting process method is characterized by comprising the following steps:

respectively placing a round bar for measurement in three tooth grooves, namely any tooth groove of each rack section in the two rack sections and the tooth groove formed between the ends of the two rack sections, and enabling the round bar to be tightly attached to two opposite side walls of the tooth groove;

and repeating the steps until the whole rack is spliced and installed.

2. The process for adjusting the installation straightness and the splicing gap of the rack according to claim 1,

and respectively sliding the micrometer which linearly slides on one side of the rack mounting surface of the base to three measuring positions corresponding to the three tooth grooves, and enabling the measuring end of the micrometer to be rightly abutted against the surface of the round bar.

3. The process for adjusting the installation straightness and the splicing gap of the rack according to claim 1,

said bringing the two rack segment ends and ends into a pre-splice attitude comprises:

splicing the ends of the two rack sections with the opposite buckling tooth gauges, and clamping the two rack sections on the rack mounting surface by using a preset number of clamps;

and sequentially pre-tightening the screw holes of the rack sections and the corresponding screw holes on the rack mounting surface by bolts with pre-tightening torque according to the sequence from left to right.

4. The process for adjusting a gap between a rack and a splice as claimed in claim 1, wherein when the first rack segment is mounted on the rack-mounting surface of the housing, the first rack segment is mounted as follows:

5. The process for adjusting the straightness of installation and the gap between splices of a rack according to claim 4, wherein prior to installing the first rack segment, the process further comprises:

cleaning a rack mounting surface of the base;

6. A process for adjusting the mounting straightness and the splicing gap of the rack according to claim 1, wherein the adjusting the splicing gap of the two rack segments so that the relative error of the three measurement values is not greater than the threshold value comprises:

7. The process for adjusting the mounting straightness and the splicing gap of the rack according to claim 1, wherein the fastening of the two rack segments to be in a formal splicing state comprises:

8. The process for adjusting the installation straightness and the gap of splicing of the rack bar according to claim 1, wherein after the above steps are repeated until the whole rack bar is spliced and installed, the method further comprises the following steps:

9. The process for adjusting the mounting straightness and the splicing gap of the rack according to claim 8, wherein the step of checking the parallelism of the whole rack with respect to the linear guide rail of the machine base comprises the following steps:

fixing the micrometer on a sliding seat of the machine base, which is matched with the linear guide rail;

10. A process of gap adjustment of mounting straightness and splicing of racks according to any one of claims 8 or 9, wherein after the parallelism of the whole rack with respect to the linear guide of the housing is checked, the method further comprises:

and cleaning the whole rack.